From 5170039cf1df2194faa85741f0733977525cd5c0 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 19 Oct 1998 21:47:12 +0000 Subject: This commit was manufactured by cvs2git to create tag 'OPENBSD_2_4_BASE'. --- src/lib/libc/net/Makefile.inc | 56 ++ src/lib/libc/net/base64.c | 317 ++++++++ src/lib/libc/net/byteorder.3 | 155 ++++ src/lib/libc/net/ethers.3 | 109 +++ src/lib/libc/net/ethers.c | 270 +++++++ src/lib/libc/net/gethostbyname.3 | 266 +++++++ src/lib/libc/net/gethostnamadr.c | 1079 +++++++++++++++++++++++++++ src/lib/libc/net/getnetbyaddr.c | 56 ++ src/lib/libc/net/getnetbyname.c | 62 ++ src/lib/libc/net/getnetent.3 | 148 ++++ src/lib/libc/net/getnetent.c | 129 ++++ src/lib/libc/net/getnetnamadr.c | 382 ++++++++++ src/lib/libc/net/getproto.c | 55 ++ src/lib/libc/net/getprotoent.3 | 144 ++++ src/lib/libc/net/getprotoent.c | 123 +++ src/lib/libc/net/getprotoname.c | 62 ++ src/lib/libc/net/getservbyname.c | 65 ++ src/lib/libc/net/getservbyport.c | 60 ++ src/lib/libc/net/getservent.3 | 155 ++++ src/lib/libc/net/getservent.c | 125 ++++ src/lib/libc/net/herror.c | 121 +++ src/lib/libc/net/htonl.c | 25 + src/lib/libc/net/htons.c | 29 + src/lib/libc/net/inet.3 | 319 ++++++++ src/lib/libc/net/inet_addr.c | 187 +++++ src/lib/libc/net/inet_lnaof.c | 59 ++ src/lib/libc/net/inet_makeaddr.c | 62 ++ src/lib/libc/net/inet_net.3 | 149 ++++ src/lib/libc/net/inet_net_ntop.c | 139 ++++ src/lib/libc/net/inet_net_pton.c | 207 ++++++ src/lib/libc/net/inet_neta.c | 83 +++ src/lib/libc/net/inet_netof.c | 58 ++ src/lib/libc/net/inet_network.c | 92 +++ src/lib/libc/net/inet_ntoa.c | 59 ++ src/lib/libc/net/inet_ntop.c | 194 +++++ src/lib/libc/net/inet_pton.c | 220 ++++++ src/lib/libc/net/ipx.3 | 126 ++++ src/lib/libc/net/ipx_addr.c | 229 ++++++ src/lib/libc/net/ipx_ntoa.c | 58 ++ src/lib/libc/net/iso_addr.3 | 110 +++ src/lib/libc/net/iso_addr.c | 119 +++ src/lib/libc/net/link_addr.3 | 131 ++++ src/lib/libc/net/linkaddr.c | 158 ++++ src/lib/libc/net/ns.3 | 130 ++++ src/lib/libc/net/ns_addr.c | 228 ++++++ src/lib/libc/net/ns_ntoa.c | 101 +++ src/lib/libc/net/nsap_addr.c | 109 +++ src/lib/libc/net/ntohl.c | 25 + src/lib/libc/net/ntohs.c | 29 + src/lib/libc/net/rcmd.3 | 227 ++++++ src/lib/libc/net/rcmd.c | 607 +++++++++++++++ src/lib/libc/net/rcmdsh.3 | 108 +++ src/lib/libc/net/rcmdsh.c | 124 ++++ src/lib/libc/net/recv.c | 50 ++ src/lib/libc/net/res_comp.c | 510 +++++++++++++ src/lib/libc/net/res_data.c | 117 +++ src/lib/libc/net/res_debug.c | 1518 ++++++++++++++++++++++++++++++++++++++ src/lib/libc/net/res_init.c | 518 +++++++++++++ src/lib/libc/net/res_mkquery.c | 195 +++++ src/lib/libc/net/res_query.c | 398 ++++++++++ src/lib/libc/net/res_random.c | 233 ++++++ src/lib/libc/net/res_send.c | 780 ++++++++++++++++++++ src/lib/libc/net/resolver.3 | 345 +++++++++ src/lib/libc/net/send.c | 50 ++ src/lib/libc/net/sethostent.c | 60 ++ 65 files changed, 13214 insertions(+) create mode 100644 src/lib/libc/net/Makefile.inc create mode 100644 src/lib/libc/net/base64.c create mode 100644 src/lib/libc/net/byteorder.3 create mode 100644 src/lib/libc/net/ethers.3 create mode 100644 src/lib/libc/net/ethers.c create mode 100644 src/lib/libc/net/gethostbyname.3 create mode 100644 src/lib/libc/net/gethostnamadr.c create mode 100644 src/lib/libc/net/getnetbyaddr.c create mode 100644 src/lib/libc/net/getnetbyname.c create mode 100644 src/lib/libc/net/getnetent.3 create mode 100644 src/lib/libc/net/getnetent.c create mode 100644 src/lib/libc/net/getnetnamadr.c create mode 100644 src/lib/libc/net/getproto.c create mode 100644 src/lib/libc/net/getprotoent.3 create mode 100644 src/lib/libc/net/getprotoent.c create mode 100644 src/lib/libc/net/getprotoname.c create mode 100644 src/lib/libc/net/getservbyname.c create mode 100644 src/lib/libc/net/getservbyport.c create mode 100644 src/lib/libc/net/getservent.3 create mode 100644 src/lib/libc/net/getservent.c create mode 100644 src/lib/libc/net/herror.c create mode 100644 src/lib/libc/net/htonl.c create mode 100644 src/lib/libc/net/htons.c create mode 100644 src/lib/libc/net/inet.3 create mode 100644 src/lib/libc/net/inet_addr.c create mode 100644 src/lib/libc/net/inet_lnaof.c create mode 100644 src/lib/libc/net/inet_makeaddr.c create mode 100644 src/lib/libc/net/inet_net.3 create mode 100644 src/lib/libc/net/inet_net_ntop.c create mode 100644 src/lib/libc/net/inet_net_pton.c create mode 100644 src/lib/libc/net/inet_neta.c create mode 100644 src/lib/libc/net/inet_netof.c create mode 100644 src/lib/libc/net/inet_network.c create mode 100644 src/lib/libc/net/inet_ntoa.c create mode 100644 src/lib/libc/net/inet_ntop.c create mode 100644 src/lib/libc/net/inet_pton.c create mode 100644 src/lib/libc/net/ipx.3 create mode 100644 src/lib/libc/net/ipx_addr.c create mode 100644 src/lib/libc/net/ipx_ntoa.c create mode 100644 src/lib/libc/net/iso_addr.3 create mode 100644 src/lib/libc/net/iso_addr.c create mode 100644 src/lib/libc/net/link_addr.3 create mode 100644 src/lib/libc/net/linkaddr.c create mode 100644 src/lib/libc/net/ns.3 create mode 100644 src/lib/libc/net/ns_addr.c create mode 100644 src/lib/libc/net/ns_ntoa.c create mode 100644 src/lib/libc/net/nsap_addr.c create mode 100644 src/lib/libc/net/ntohl.c create mode 100644 src/lib/libc/net/ntohs.c create mode 100644 src/lib/libc/net/rcmd.3 create mode 100644 src/lib/libc/net/rcmd.c create mode 100644 src/lib/libc/net/rcmdsh.3 create mode 100644 src/lib/libc/net/rcmdsh.c create mode 100644 src/lib/libc/net/recv.c create mode 100644 src/lib/libc/net/res_comp.c create mode 100644 src/lib/libc/net/res_data.c create mode 100644 src/lib/libc/net/res_debug.c create mode 100644 src/lib/libc/net/res_init.c create mode 100644 src/lib/libc/net/res_mkquery.c create mode 100644 src/lib/libc/net/res_query.c create mode 100644 src/lib/libc/net/res_random.c create mode 100644 src/lib/libc/net/res_send.c create mode 100644 src/lib/libc/net/resolver.3 create mode 100644 src/lib/libc/net/send.c create mode 100644 src/lib/libc/net/sethostent.c (limited to 'src/lib/libc/net') diff --git a/src/lib/libc/net/Makefile.inc b/src/lib/libc/net/Makefile.inc new file mode 100644 index 0000000000..935a1904c1 --- /dev/null +++ b/src/lib/libc/net/Makefile.inc @@ -0,0 +1,56 @@ +# $OpenBSD: Makefile.inc,v 1.16 1998/08/29 21:11:40 deraadt Exp $ + +# net sources +.PATH: ${.CURDIR}/arch/${MACHINE_ARCH}/net ${.CURDIR}/net + +CFLAGS+=-DRESOLVSORT + +SRCS+= base64.c gethostnamadr.c getnetbyaddr.c getnetbyname.c getnetent.c \ + getnetnamadr.c getproto.c getprotoent.c getprotoname.c getservbyname.c \ + getservbyport.c getservent.c herror.c inet_addr.c inet_lnaof.c \ + inet_makeaddr.c inet_neta.c inet_netof.c inet_network.c \ + inet_net_ntop.c inet_net_pton.c inet_ntoa.c inet_ntop.c \ + inet_pton.c ipx_addr.c ipx_ntoa.c \ + iso_addr.c linkaddr.c ns_addr.c ns_ntoa.c nsap_addr.c rcmd.c recv.c \ + res_comp.c res_data.c res_debug.c res_init.c res_mkquery.c res_query.c \ + res_random.c res_send.c send.c sethostent.c ethers.c rcmdsh.c + +# machine-dependent net sources +# m-d Makefile.inc must include sources for: +# htonl() htons() ntohl() ntohs() + +.include "${.CURDIR}/arch/${MACHINE_ARCH}/net/Makefile.inc" + +MAN+= byteorder.3 ethers.3 gethostbyname.3 getnetent.3 getprotoent.3 \ + getservent.3 inet.3 inet_net.3 iso_addr.3 link_addr.3 ns.3 ipx.3 \ + rcmd.3 rcmdsh.3 resolver.3 + +MLINKS+=byteorder.3 htonl.3 byteorder.3 htons.3 byteorder.3 ntohl.3 \ + byteorder.3 ntohs.3 byteorder.3 htobe16.3 byteorder.3 htobe32.3 \ + byteorder.3 betoh16.3 byteorder.3 betoh32.3 byteorder.3 htole16.3 \ + byteorder.3 htole32.3 byteorder.3 letoh16.3 byteorder.3 letoh32.3 \ + byteorder.3 swap16.3 byteorder.3 swap32.3 +MLINKS+=ethers.3 ether_aton.3 ethers.3 ether_hostton.3 ethers.3 ether_line.3 \ + ethers.3 ether_ntoa.3 ethers.3 ether_ntohost.3 ethers.3 ether_addr.3 +MLINKS+=gethostbyname.3 endhostent.3 gethostbyname.3 gethostbyaddr.3 \ + gethostbyname.3 sethostent.3 gethostbyname.3 gethostent.3 \ + gethostbyname.3 herror.3 gethostbyname.3 gethostbyname2.3 \ + gethostbyname.3 hstrerror.3 +MLINKS+=getnetent.3 endnetent.3 getnetent.3 getnetbyaddr.3 \ + getnetent.3 getnetbyname.3 getnetent.3 setnetent.3 +MLINKS+=getprotoent.3 endprotoent.3 getprotoent.3 getprotobyname.3 \ + getprotoent.3 getprotobynumber.3 getprotoent.3 setprotoent.3 +MLINKS+=getservent.3 endservent.3 getservent.3 getservbyname.3 \ + getservent.3 getservbyport.3 getservent.3 setservent.3 +MLINKS+=inet.3 addr.3 inet.3 inet_addr.3 inet.3 inet_aton.3 \ + inet.3 inet_lnaof.3 inet.3 inet_makeaddr.3 inet.3 inet_netof.3 \ + inet.3 inet_network.3 inet.3 inet_ntoa.3 inet.3 network.3 \ + inet.3 ntoa.3 inet.3 inet_ntop.3 inet.3 inet_pton.3 +MLINKS+=iso_addr.3 iso_ntoa.3 +MLINKS+=link_addr.3 link_ntoa.3 +MLINKS+=ipx.3 ipx_addr.3 ipx.3 ipx_ntoa.3 +MLINKS+=ns.3 ns_addr.3 ns.3 ns_ntoa.3 +MLINKS+=rcmd.3 iruserok.3 rcmd.3 rresvport.3 rcmd.3 ruserok.3 +MLINKS+=resolver.3 dn_comp.3 resolver.3 dn_expand.3 resolver.3 res_init.3 \ + resolver.3 res_mkquery.3 resolver.3 res_send.3 resolver.3 res_query.3 \ + resolver.3 res_search.3 diff --git a/src/lib/libc/net/base64.c b/src/lib/libc/net/base64.c new file mode 100644 index 0000000000..452fe5afcc --- /dev/null +++ b/src/lib/libc/net/base64.c @@ -0,0 +1,317 @@ +/* $OpenBSD: base64.c,v 1.3 1997/11/08 20:46:55 deraadt Exp $ */ + +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1995 by International Business Machines, Inc. + * + * International Business Machines, Inc. (hereinafter called IBM) grants + * permission under its copyrights to use, copy, modify, and distribute this + * Software with or without fee, provided that the above copyright notice and + * all paragraphs of this notice appear in all copies, and that the name of IBM + * not be used in connection with the marketing of any product incorporating + * the Software or modifications thereof, without specific, written prior + * permission. + * + * To the extent it has a right to do so, IBM grants an immunity from suit + * under its patents, if any, for the use, sale or manufacture of products to + * the extent that such products are used for performing Domain Name System + * dynamic updates in TCP/IP networks by means of the Software. No immunity is + * granted for any product per se or for any other function of any product. + * + * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, + * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN + * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#define Assert(Cond) if (!(Cond)) abort() + +static const char Base64[] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; +static const char Pad64 = '='; + +/* (From RFC1521 and draft-ietf-dnssec-secext-03.txt) + The following encoding technique is taken from RFC 1521 by Borenstein + and Freed. It is reproduced here in a slightly edited form for + convenience. + + A 65-character subset of US-ASCII is used, enabling 6 bits to be + represented per printable character. (The extra 65th character, "=", + is used to signify a special processing function.) + + The encoding process represents 24-bit groups of input bits as output + strings of 4 encoded characters. Proceeding from left to right, a + 24-bit input group is formed by concatenating 3 8-bit input groups. + These 24 bits are then treated as 4 concatenated 6-bit groups, each + of which is translated into a single digit in the base64 alphabet. + + Each 6-bit group is used as an index into an array of 64 printable + characters. The character referenced by the index is placed in the + output string. + + Table 1: The Base64 Alphabet + + Value Encoding Value Encoding Value Encoding Value Encoding + 0 A 17 R 34 i 51 z + 1 B 18 S 35 j 52 0 + 2 C 19 T 36 k 53 1 + 3 D 20 U 37 l 54 2 + 4 E 21 V 38 m 55 3 + 5 F 22 W 39 n 56 4 + 6 G 23 X 40 o 57 5 + 7 H 24 Y 41 p 58 6 + 8 I 25 Z 42 q 59 7 + 9 J 26 a 43 r 60 8 + 10 K 27 b 44 s 61 9 + 11 L 28 c 45 t 62 + + 12 M 29 d 46 u 63 / + 13 N 30 e 47 v + 14 O 31 f 48 w (pad) = + 15 P 32 g 49 x + 16 Q 33 h 50 y + + Special processing is performed if fewer than 24 bits are available + at the end of the data being encoded. A full encoding quantum is + always completed at the end of a quantity. When fewer than 24 input + bits are available in an input group, zero bits are added (on the + right) to form an integral number of 6-bit groups. Padding at the + end of the data is performed using the '=' character. + + Since all base64 input is an integral number of octets, only the + ------------------------------------------------- + following cases can arise: + + (1) the final quantum of encoding input is an integral + multiple of 24 bits; here, the final unit of encoded + output will be an integral multiple of 4 characters + with no "=" padding, + (2) the final quantum of encoding input is exactly 8 bits; + here, the final unit of encoded output will be two + characters followed by two "=" padding characters, or + (3) the final quantum of encoding input is exactly 16 bits; + here, the final unit of encoded output will be three + characters followed by one "=" padding character. + */ + +int +b64_ntop(src, srclength, target, targsize) + u_char const *src; + size_t srclength; + char *target; + size_t targsize; +{ + size_t datalength = 0; + u_char input[3]; + u_char output[4]; + int i; + + while (2 < srclength) { + input[0] = *src++; + input[1] = *src++; + input[2] = *src++; + srclength -= 3; + + output[0] = input[0] >> 2; + output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4); + output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6); + output[3] = input[2] & 0x3f; + Assert(output[0] < 64); + Assert(output[1] < 64); + Assert(output[2] < 64); + Assert(output[3] < 64); + + if (datalength + 4 > targsize) + return (-1); + target[datalength++] = Base64[output[0]]; + target[datalength++] = Base64[output[1]]; + target[datalength++] = Base64[output[2]]; + target[datalength++] = Base64[output[3]]; + } + + /* Now we worry about padding. */ + if (0 != srclength) { + /* Get what's left. */ + input[0] = input[1] = input[2] = '\0'; + for (i = 0; i < srclength; i++) + input[i] = *src++; + + output[0] = input[0] >> 2; + output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4); + output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6); + Assert(output[0] < 64); + Assert(output[1] < 64); + Assert(output[2] < 64); + + if (datalength + 4 > targsize) + return (-1); + target[datalength++] = Base64[output[0]]; + target[datalength++] = Base64[output[1]]; + if (srclength == 1) + target[datalength++] = Pad64; + else + target[datalength++] = Base64[output[2]]; + target[datalength++] = Pad64; + } + if (datalength >= targsize) + return (-1); + target[datalength] = '\0'; /* Returned value doesn't count \0. */ + return (datalength); +} + +/* skips all whitespace anywhere. + converts characters, four at a time, starting at (or after) + src from base - 64 numbers into three 8 bit bytes in the target area. + it returns the number of data bytes stored at the target, or -1 on error. + */ + +int +b64_pton(src, target, targsize) + char const *src; + u_char *target; + size_t targsize; +{ + int tarindex, state, ch; + char *pos; + + state = 0; + tarindex = 0; + + while ((ch = *src++) != '\0') { + if (isspace(ch)) /* Skip whitespace anywhere. */ + continue; + + if (ch == Pad64) + break; + + pos = strchr(Base64, ch); + if (pos == 0) /* A non-base64 character. */ + return (-1); + + switch (state) { + case 0: + if (target) { + if (tarindex >= targsize) + return (-1); + target[tarindex] = (pos - Base64) << 2; + } + state = 1; + break; + case 1: + if (target) { + if (tarindex + 1 >= targsize) + return (-1); + target[tarindex] |= (pos - Base64) >> 4; + target[tarindex+1] = ((pos - Base64) & 0x0f) + << 4 ; + } + tarindex++; + state = 2; + break; + case 2: + if (target) { + if (tarindex + 1 >= targsize) + return (-1); + target[tarindex] |= (pos - Base64) >> 2; + target[tarindex+1] = ((pos - Base64) & 0x03) + << 6; + } + tarindex++; + state = 3; + break; + case 3: + if (target) { + if (tarindex >= targsize) + return (-1); + target[tarindex] |= (pos - Base64); + } + tarindex++; + state = 0; + break; + } + } + + /* + * We are done decoding Base-64 chars. Let's see if we ended + * on a byte boundary, and/or with erroneous trailing characters. + */ + + if (ch == Pad64) { /* We got a pad char. */ + ch = *src++; /* Skip it, get next. */ + switch (state) { + case 0: /* Invalid = in first position */ + case 1: /* Invalid = in second position */ + return (-1); + + case 2: /* Valid, means one byte of info */ + /* Skip any number of spaces. */ + for (; ch != '\0'; ch = *src++) + if (!isspace(ch)) + break; + /* Make sure there is another trailing = sign. */ + if (ch != Pad64) + return (-1); + ch = *src++; /* Skip the = */ + /* Fall through to "single trailing =" case. */ + /* FALLTHROUGH */ + + case 3: /* Valid, means two bytes of info */ + /* + * We know this char is an =. Is there anything but + * whitespace after it? + */ + for (; ch != '\0'; ch = *src++) + if (!isspace(ch)) + return (-1); + + /* + * Now make sure for cases 2 and 3 that the "extra" + * bits that slopped past the last full byte were + * zeros. If we don't check them, they become a + * subliminal channel. + */ + if (target && target[tarindex] != 0) + return (-1); + } + } else { + /* + * We ended by seeing the end of the string. Make sure we + * have no partial bytes lying around. + */ + if (state != 0) + return (-1); + } + + return (tarindex); +} diff --git a/src/lib/libc/net/byteorder.3 b/src/lib/libc/net/byteorder.3 new file mode 100644 index 0000000000..f2788b25dc --- /dev/null +++ b/src/lib/libc/net/byteorder.3 @@ -0,0 +1,155 @@ +.\" $OpenBSD: byteorder.3,v 1.5 1997/11/19 23:30:17 niklas Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd June 4, 1993 +.Dt BYTEORDER 3 +.Os BSD 4.2 +.Sh NAME +.Nm htonl , +.Nm htons , +.Nm ntohl , +.Nm ntohs , +.Nm htobe32 , +.Nm htobe16 , +.Nm betoh32 , +.Nm betoh16 , +.Nm htole32 , +.Nm htole16 , +.Nm letoh32 , +.Nm letoh16 , +.Nm swap32 , +.Nm swap16 +.Nd convert values between different byte orderings +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Ft u_int32_t +.Fn htonl "u_int32_t host32" +.Ft u_int16_t +.Fn htons "u_int16_t host16" +.Ft u_int32_t +.Fn ntohl "u_int32_t net32" +.Ft u_int16_t +.Fn ntohs "u_int16_t net16" +.Ft u_int32_t +.Fn htobe32 "u_int32_t host32" +.Ft u_int16_t +.Fn htobe16 "u_int16_t host16" +.Ft u_int32_t +.Fn betoh32 "u_int32_t big32" +.Ft u_int16_t +.Fn betoh16 "u_int16_t big16" +.Ft u_int32_t +.Fn htole32 "u_int32_t host32" +.Ft u_int16_t +.Fn htole16 "u_int16_t host16" +.Ft u_int32_t +.Fn letoh32 "u_int32_t little32" +.Ft u_int16_t +.Fn letoh16 "u_int16_t little16" +.Ft u_int32_t +.Fn swap32 "u_int32_t val32" +.Ft u_int16_t +.Fn swap16 "u_int16_t val16" +.Sh DESCRIPTION +These routines convert 16 and 32 bit quantities between different +byte orderings. The "swap" functions reverse the byte ordering of +the given quantity, the others converts either from/to the native +byte order used by the host to/from either little- or big-endian (a.k.a +network) order. +.Pp +Apart from the "swap" functions, the names can be described by this form: +{src-order}to{dst-order}{size}. +Both {src-order} and {dst-order} can take the following forms: +.Bl -tag -width "be " +.It Em h +host order +.It Em n +network order (big-endian) +.It Em be +big-endian (Most significant byte first) +.It Em le +little-endian (Least significant byte first) +.El +.Pp +One of the specified orderings must be "h". +{Size} will take these forms: +.Bl -tag -width "32 " +.It Em l +long (32-bit, used in conjunction with forms involving "n") +.It Em s +short (16-bit, used in conjunction with forms involving "n") +.It Em 16 +16-bit +.It Em 32 +32-bit +.El +.Pp +The "swap" functions are of the form: swap{size}. +.Pp +Names involving "n" convert quantities between network +byte order and host byte order. The last letter (s/l) is a mnemonic +for the traditional names for such quantities, short and long, +respectively. Today, the C concept of "short"/"long" integers +need not coincide with this traditional misunderstanding. +On machines which have a byte order which is the same as the network +order, routines are defined as null macros. +.Pp +The functions involving either "be", "le" or "swap" use the numbers +(16/32) for specifying the bitwidth of the quantities they operate on. +Currently all supported architectures are either big- or little-endian +so either the "be" or the "le" variants are implemented as null macros. +.Pp +The routines mentioned above which have either {src-order} or {dst-order} +set to "n" are most often used in +conjunction with Internet addresses and ports as returned by +.Xr gethostbyname 3 +and +.Xr getservent 3 . +.Sh SEE ALSO +.Xr gethostbyname 3 , +.Xr getservent 3 +.Sh HISTORY +The +.Nm byteorder +functions appeared in +.Bx 4.2 . +.Sh BUGS +On the +.Tn vax , +.Tn alpha , +.Tn i386 , +and so far +.Tn mips +bytes are handled backwards from most everyone else in +the world. This is not expected to be fixed in the near future. diff --git a/src/lib/libc/net/ethers.3 b/src/lib/libc/net/ethers.3 new file mode 100644 index 0000000000..f5db308115 --- /dev/null +++ b/src/lib/libc/net/ethers.3 @@ -0,0 +1,109 @@ +.\" $OpenBSD: ethers.3,v 1.9 1998/05/12 09:15:19 deraadt Exp $ +.\" +.\" Written by roland@frob.com. Public domain. +.\" +.Dd December 16, 1993 +.Dt ETHERS 3 +.Os +.Sh NAME +.Nm ether_aton , +.Nm ether_ntoa , +.Nm ether_addr , +.Nm ether_ntohost , +.Nm ether_hostton , +.Nm ether_line +.Nd get ethers entry +.Sh SYNOPSIS +.Fd #include +.Ft char * +.Fn ether_ntoa "struct ether_addr *e" +.Ft struct ether_addr * +.Fn ether_aton "char *s" +.Ft int +.Fn ether_ntohost "char *hostname" "struct ether_addr *e" +.Ft int +.Fn ether_hostton "char *hostname" "struct ether_addr *e" +.Ft int +.Fn ether_line "char *l" "struct ether_addr *e" "char *hostname" +.Sh DESCRIPTION +Ethernet addresses are represented by the +following structure: +.Bd -literal -offset indent +struct ether_addr { + u_int8_t ether_addr_octet[6]; +}; +.Ed +.Pp +The +.Fn ether_ntoa +function converts this structure into an ASCII string of the form +``xx:xx:xx:xx:xx:xx'', consisting of 6 hexadecimal numbers separated +by colons. It returns a pointer to a static buffer that is reused for +each call. +The +.Fn ether_aton +converts an ASCII string of the same form and to a structure +containing the 6 octets of the address. It returns a pointer to a +static structure that is reused for each call. +.Pp +The +.Fn ether_ntohost +and +.Fn ether_hostton +functions interrogate the data base mapping host names to Ethernet +addresses, +.Pa /etc/ethers . +The +.Fn ether_ntohost +function looks up the given Ethernet address and writes the associated +host name into the character buffer passed. This buffer should be +.Ev MAXHOSTNAMELEN +characters in size. +The +.Fn ether_hostton +function looks up the given host name and writes the associated +Ethernet address into the structure passed. Both functions return +zero if they find the requested host name or address, and -1 if not. +.Pp +Each call reads +.Pa /etc/ethers +from the beginning; if a + appears alone on a line in the file, then +.Fn ether_hostton +will consult the +.Pa ethers.byname +YP map, and +.Fn ether_ntohost +will consult the +.Pa ethers.byaddr +YP map. +.Pp +The +.Fn ether_line +function parses a line from the +.Pa /etc/ethers +file and fills in the passed ``struct ether_addr'' and character +buffer with the Ethernet address and host name on the line. It +returns zero if the line was successfully parsed and -1 if not. +The character buffer buffer should be +.Ev MAXHOSTNAMELEN +characters in size. +.Sh FILES +.Bl -tag -width /etc/ethers -compact +.It Pa /etc/ethers +.El +.Sh SEE ALSO +.Xr ethers 5 +.Sh HISTORY +The +.Fn ether_ntoa , +.Fn ether_aton , +.Fn ether_ntohost , +.Fn ether_hostton , +and +.Fn ether_line +functions were adopted from SunOS and appeared in +NetBSD 0.9b. +.Sh BUGS +The data space used by these functions is static; if future use +requires the data, it should be copied before any subsequent calls to +these functions overwrite it. diff --git a/src/lib/libc/net/ethers.c b/src/lib/libc/net/ethers.c new file mode 100644 index 0000000000..9df876b6f4 --- /dev/null +++ b/src/lib/libc/net/ethers.c @@ -0,0 +1,270 @@ +/* $OpenBSD: ethers.c,v 1.9 1998/06/21 22:13:44 millert Exp $ */ + +/* + * Copyright (c) 1998 Todd C. Miller + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * ethers(3) a la Sun. + * Originally Written by Roland McGrath 10/14/93. + * Substantially modified by Todd C. Miller + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: ethers.c,v 1.9 1998/06/21 22:13:44 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef _PATH_ETHERS +#define _PATH_ETHERS "/etc/ethers" +#endif + +static char * _ether_aton __P((char *, struct ether_addr *)); + +char * +ether_ntoa(e) + struct ether_addr *e; +{ + static char a[] = "xx:xx:xx:xx:xx:xx"; + + if (e->ether_addr_octet[0] > 0xFF || e->ether_addr_octet[1] > 0xFF || + e->ether_addr_octet[2] > 0xFF || e->ether_addr_octet[3] > 0xFF || + e->ether_addr_octet[4] > 0xFF || e->ether_addr_octet[5] > 0xFF) { + errno = EINVAL; + return (NULL); + } + + (void)sprintf(a, "%02x:%02x:%02x:%02x:%02x:%02x", + e->ether_addr_octet[0], e->ether_addr_octet[1], + e->ether_addr_octet[2], e->ether_addr_octet[3], + e->ether_addr_octet[4], e->ether_addr_octet[5]); + + return (a); +} + +static char * +_ether_aton(s, e) + char *s; + struct ether_addr *e; +{ + int i; + long l; + char *pp; + + while (isspace(*s)) + s++; + + /* expect 6 hex octets separated by ':' or space/NUL if last octet */ + for (i = 0; i < 6; i++) { + l = strtol(s, &pp, 16); + if (pp == s || l > 0xFF) + return (NULL); + if (!(*pp == ':' || (i == 5 && (isspace(*pp) || *pp == '\0')))) + return (NULL); + e->ether_addr_octet[i] = (u_char)l; + s = pp + 1; + } + + /* return character after the octets ala strtol(3) */ + return (pp); +} + +struct ether_addr * +ether_aton(s) + char *s; +{ + static struct ether_addr n; + + return (_ether_aton(s, &n) ? &n : NULL); +} + +int +ether_ntohost(hostname, e) + char *hostname; + struct ether_addr *e; +{ + FILE *f; + char buf[BUFSIZ+1], *p; + size_t len; + struct ether_addr try; +#ifdef YP + char trybuf[sizeof("xx:xx:xx:xx:xx:xx")]; + int trylen; +#endif + + if (e->ether_addr_octet[0] > 0xFF || e->ether_addr_octet[1] > 0xFF || + e->ether_addr_octet[2] > 0xFF || e->ether_addr_octet[3] > 0xFF || + e->ether_addr_octet[4] > 0xFF || e->ether_addr_octet[5] > 0xFF) { + errno = EINVAL; + return (-1); + } + +#ifdef YP + sprintf(trybuf, "%x:%x:%x:%x:%x:%x", + e->ether_addr_octet[0], e->ether_addr_octet[1], + e->ether_addr_octet[2], e->ether_addr_octet[3], + e->ether_addr_octet[4], e->ether_addr_octet[5]); + trylen = strlen(trybuf); +#endif + + f = fopen(_PATH_ETHERS, "r"); + if (f == NULL) + return (-1); + while ((p = fgetln(f, &len)) != NULL) { + if (p[len-1] == '\n') + len--; + if (len > sizeof(buf) - 2) + continue; + (void)memcpy(buf, p, len); + buf[len] = '\n'; /* code assumes newlines later on */ + buf[len+1] = '\0'; +#ifdef YP + /* A + in the file means try YP now. */ + if (!strncmp(buf, "+\n", sizeof(buf))) { + char *ypbuf, *ypdom; + int ypbuflen; + + if (yp_get_default_domain(&ypdom)) + continue; + if (yp_match(ypdom, "ethers.byaddr", trybuf, + trylen, &ypbuf, &ypbuflen)) + continue; + if (ether_line(ypbuf, &try, hostname) == 0) { + free(ypbuf); + (void)fclose(f); + return (0); + } + free(ypbuf); + continue; + } +#endif + if (ether_line(buf, &try, hostname) == 0 && + memcmp((void *)&try, (void *)e, sizeof(try)) == 0) { + (void)fclose(f); + return (0); + } + } + (void)fclose(f); + errno = ENOENT; + return (-1); +} + +int +ether_hostton(hostname, e) + char *hostname; + struct ether_addr *e; +{ + FILE *f; + char buf[BUFSIZ+1], *p; + char try[MAXHOSTNAMELEN]; + size_t len; +#ifdef YP + int hostlen = strlen(hostname); +#endif + + f = fopen(_PATH_ETHERS, "r"); + if (f==NULL) + return (-1); + + while ((p = fgetln(f, &len)) != NULL) { + if (p[len-1] == '\n') + len--; + if (len > sizeof(buf) - 2) + continue; + memcpy(buf, p, len); + buf[len] = '\n'; /* code assumes newlines later on */ + buf[len+1] = '\0'; +#ifdef YP + /* A + in the file means try YP now. */ + if (!strncmp(buf, "+\n", sizeof(buf))) { + char *ypbuf, *ypdom; + int ypbuflen; + + if (yp_get_default_domain(&ypdom)) + continue; + if (yp_match(ypdom, "ethers.byname", hostname, hostlen, + &ypbuf, &ypbuflen)) + continue; + if (ether_line(ypbuf, e, try) == 0) { + free(ypbuf); + (void)fclose(f); + return (0); + } + free(ypbuf); + continue; + } +#endif + if (ether_line(buf, e, try) == 0 && strcmp(hostname, try) == 0) { + (void)fclose(f); + return (0); + } + } + (void)fclose(f); + errno = ENOENT; + return (-1); +} + +int +ether_line(line, e, hostname) + char *line; + struct ether_addr *e; + char *hostname; +{ + char *p; + size_t n; + + /* Parse "xx:xx:xx:xx:xx:xx" */ + if ((p = _ether_aton(line, e)) == NULL || (*p != ' ' && *p != '\t')) + goto bad; + + /* Now get the hostname */ + while (isspace(*p)) + p++; + if (*p == '\0') + goto bad; + n = strcspn(p, " \t\n"); + if (n >= MAXHOSTNAMELEN) + goto bad; + (void)strncpy(hostname, p, n); + hostname[n] = '\0'; + return (0); + +bad: + errno = EINVAL; + return (-1); +} diff --git a/src/lib/libc/net/gethostbyname.3 b/src/lib/libc/net/gethostbyname.3 new file mode 100644 index 0000000000..37069c0a59 --- /dev/null +++ b/src/lib/libc/net/gethostbyname.3 @@ -0,0 +1,266 @@ +.\" $OpenBSD: gethostbyname.3,v 1.9 1998/09/07 16:44:35 aaron Exp $ +.\" +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd March 13, 1997 +.Dt GETHOSTBYNAME 3 +.Os +.Sh NAME +.Nm gethostbyname , +.Nm gethostbyname2 , +.Nm gethostbyaddr , +.Nm gethostent , +.Nm sethostent , +.Nm endhostent , +.Nm hstrerror , +.Nm herror +.Nd get network host entry +.Sh SYNOPSIS +.Fd #include +.Fd extern int h_errno; +.Ft struct hostent * +.Fn gethostbyname "const char *name" +.Ft struct hostent * +.Fn gethostbyname2 "const char *name" "int af" +.Ft struct hostent * +.Fn gethostbyaddr "const char *addr" "int len" "int type" +.Ft struct hostent * +.Fn gethostent void +.Ft void +.Fn sethostent "int stayopen" +.Ft void +.Fn endhostent void +.Ft void +.Fn herror "const char *string" +.Ft const char * +.Fn hstrerror "int err" +.Sh DESCRIPTION +The +.Fn gethostbyname +and +.Fn gethostbyaddr +functions +each return a pointer to an object with the +following structure describing an internet host +referenced by name or by address, respectively. +This structure contains either the information obtained from the name server, +.Xr named 8 , +broken-out fields from a line in +.Pa /etc/hosts , +or database entries supplied by the +.Xr yp 8 +system . +If the local name server is not running these routines do a lookup in +.Pa /etc/hosts . +.Bd -literal +struct hostent { + char *h_name; /* official name of host */ + char **h_aliases; /* alias list */ + int h_addrtype; /* host address type */ + int h_length; /* length of address */ + char **h_addr_list; /* list of addresses from name server */ +}; +#define h_addr h_addr_list[0] /* address, for backward compatibility */ +.Ed +.Pp +The members of this structure are: +.Bl -tag -width h_addr_list +.It Fa h_name +Official name of the host. +.It Fa h_aliases +A zero terminated array of alternate names for the host. +.It Fa h_addrtype +The type of address being returned. +.It Fa h_length +The length, in bytes, of the address. +.It Fa h_addr_list +A zero terminated array of network addresses for the host. +Host addresses are returned in network byte order. +.It Fa h_addr +The first address in +.Fa h_addr_list ; +this is for backward compatibility. +.El +.Pp +When using the nameserver, +.Fn gethostbyname +will search for the named host in the current domain and its parents +unless the name ends in a dot. +If the name contains no dot, and if the environment variable +.Dq Ev HOSTALIASES +contains the name of an alias file, the alias file will first be searched +for an alias matching the input name. +See +.Xr hostname 7 +for the domain search procedure and the alias file format. +.Pp +.Fn Gethostbyname2 +is an advanced form of +.Fn gethostbyname +which allows lookups in address families other than +.Dv AF_INET , +for example +.Dv AF_INET6 . +.Pp +The +.Fn sethostent +function +may be used to request the use of a connected +.Tn TCP +socket for queries. +If the +.Fa stayopen +flag is non-zero, +this sets the option to send all queries to the name server using +.Tn TCP +and to retain the connection after each call to +.Fn gethostbyname +or +.Fn gethostbyaddr . +Otherwise, queries are performed using +.Tn UDP +datagrams. +.Pp +The +.Fn endhostent +function +closes the +.Tn TCP +connection. +.Pp +The +.Fn herror +function prints an error message describing the failure. If its argument +.Fa string +is +.Pf non Dv -NULL , +it is prepended to the message string and separated from it by a colon +and a space. The error message is printed with a trailing newline. +The contents of the error message is the same as that returned by +.Fn hstrerror +with argument +.Fa h_errno . +.Sh FILES +.Bl -tag -width /etc/hosts -compact +.It Pa /etc/hosts +.El +.Sh DIAGNOSTICS +Error return status from +.Fn gethostbyname , +.Fn gethostbyname2 , +and +.Fn gethostbyaddr +is indicated by return of a null pointer. +The external integer +.Va h_errno +may then be checked to see whether this is a temporary failure +or an invalid or unknown host. +.Pp +The variable +.Va h_errno +can have the following values: +.Bl -tag -width HOST_NOT_FOUND +.It Dv HOST_NOT_FOUND +No such host is known. +.It Dv TRY_AGAIN +This is usually a temporary error +and means that the local server did not receive +a response from an authoritative server. +A retry at some later time may succeed. +.It Dv NO_RECOVERY +Some unexpected server failure was encountered. +This is a non-recoverable error. +.It Dv NO_DATA +The requested name is valid but does not have an IP address; +this is not a temporary error. +This means that the name is known to the name server but there is no address +associated with this name. +Another type of request to the name server using this domain name +will result in an answer; +for example, a mail-forwarder may be registered for this domain. +.El +.Sh SEE ALSO +.Xr resolver 3 , +.Xr hosts 5 , +.Xr hostname 7 , +.Xr named 8 +.Sh CAVEAT +The +.Fn gethostent +function +reads the next line of +.Pa /etc/hosts , +opening the file if necessary. +.Pp +The +.Fn sethostent +function +opens and/or rewinds the file +.Pa /etc/hosts . +If the +.Fa stayopen +argument is non-zero, +the file will not be closed after each call to +.Fn gethostbyname , +.Fn gethostbyname2 , +or +.Fn gethostbyaddr . +.Pp +The +.Fn endhostent +function +closes the file. +.Sh HISTORY +The +.Fn herror +function appeared in +.Bx 4.3 . +The +.Fn endhostent , +.Fn gethostbyaddr , +.Fn gethostbyname , +.Fn gethostent , +and +.Fn sethostent +functions appeared in +.Bx 4.2 . +.Sh BUGS +These functions use static data storage; +if the data is needed for future use, it should be +copied before any subsequent calls overwrite it. +Only the Internet +address formats are currently understood. +.Pp +YP does not support any address families other than +.Dv AF_INET +and uses +the traditional database format. diff --git a/src/lib/libc/net/gethostnamadr.c b/src/lib/libc/net/gethostnamadr.c new file mode 100644 index 0000000000..7321225863 --- /dev/null +++ b/src/lib/libc/net/gethostnamadr.c @@ -0,0 +1,1079 @@ +/*- + * Copyright (c) 1985, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: gethostnamadr.c,v 1.30 1998/03/16 05:06:55 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef YP +#include +#include +#include +#include "ypinternal.h" +#endif + +#define MULTI_PTRS_ARE_ALIASES 1 /* XXX - experimental */ + +#define MAXALIASES 35 +#define MAXADDRS 35 + +static char *h_addr_ptrs[MAXADDRS + 1]; + +#ifdef YP +static char *__ypdomain; +#endif + +static struct hostent host; +static char *host_aliases[MAXALIASES]; +static char hostbuf[BUFSIZ+1]; +static union { + struct in_addr _host_in_addr; + u_char _host_addr[16]; /* IPv4 or IPv6 */ +} _host_addr_u; +#define host_addr _host_addr_u._host_addr +static FILE *hostf = NULL; +static int stayopen = 0; + +static void map_v4v6_address __P((const char *src, char *dst)); +static void map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len)); + +#ifdef RESOLVSORT +static void addrsort __P((char **, int)); +#endif + +int _hokchar __P((const char *)); + +static const char AskedForGot[] = + "gethostby*.getanswer: asked for \"%s\", got \"%s\""; + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +typedef union { + HEADER hdr; + u_char buf[MAXPACKET]; +} querybuf; + +typedef union { + int32_t al; + char ac; +} align; + +static struct hostent *getanswer __P((const querybuf *, int, const char *, + int)); + +extern int h_errno; + +int +_hokchar(p) + const char *p; +{ + char c; + + /* + * Many people do not obey RFC 822 and 1035. The valid + * characters are a-z, A-Z, 0-9, '-' and . But the others + * tested for below can happen, and we must be more permissive + * than the resolver until those idiots clean up their act. + * We let '/' through, but not '..' + */ + while ((c = *p++)) { + if (('a' <= c && c <= 'z') || + ('A' <= c && c <= 'Z') || + ('0' <= c && c <= '9')) + continue; + if (strchr("-_/", c)) + continue; + if (c == '.' && *p != '.') + continue; + return 0; + } + return 1; +} + +static struct hostent * +getanswer(answer, anslen, qname, qtype) + const querybuf *answer; + int anslen; + const char *qname; + int qtype; +{ + register const HEADER *hp; + register const u_char *cp; + register int n; + const u_char *eom; + char *bp, **ap, **hap; + int type, class, buflen, ancount, qdcount; + int haveanswer, had_error; + int toobig = 0; + char tbuf[MAXDNAME]; + const char *tname; + int (*name_ok) __P((const char *)); + + tname = qname; + host.h_name = NULL; + eom = answer->buf + anslen; + switch (qtype) { + case T_A: + case T_AAAA: +#ifdef USE_RESOLV_NAME_OK + name_ok = res_hnok; + break; +#endif + case T_PTR: +#ifdef USE_RESOLV_NAME_OK + name_ok = res_dnok; +#else + name_ok = _hokchar; +#endif + break; + default: + return (NULL); + } + /* + * find first satisfactory answer + */ + hp = &answer->hdr; + ancount = ntohs(hp->ancount); + qdcount = ntohs(hp->qdcount); + bp = hostbuf; + buflen = sizeof hostbuf; + cp = answer->buf + HFIXEDSZ; + if (qdcount != 1) { + h_errno = NO_RECOVERY; + return (NULL); + } + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + h_errno = NO_RECOVERY; + return (NULL); + } + cp += n + QFIXEDSZ; + if (qtype == T_A || qtype == T_AAAA) { + /* res_send() has already verified that the query name is the + * same as the one we sent; this just gets the expanded name + * (i.e., with the succeeding search-domain tacked on). + */ + n = strlen(bp) + 1; /* for the \0 */ + host.h_name = bp; + bp += n; + buflen -= n; + /* The qname can be abbreviated, but h_name is now absolute. */ + qname = host.h_name; + } + ap = host_aliases; + *ap = NULL; + host.h_aliases = host_aliases; + hap = h_addr_ptrs; + *hap = NULL; + host.h_addr_list = h_addr_ptrs; + haveanswer = 0; + had_error = 0; + while (ancount-- > 0 && cp < eom && !had_error) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + had_error++; + continue; + } + cp += n; /* name */ + type = _getshort(cp); + cp += INT16SZ; /* type */ + class = _getshort(cp); + cp += INT16SZ + INT32SZ; /* class, TTL */ + n = _getshort(cp); + cp += INT16SZ; /* len */ + if (class != C_IN) { + /* XXX - debug? syslog? */ + cp += n; + continue; /* XXX - had_error++ ? */ + } + if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) { + if (ap >= &host_aliases[MAXALIASES-1]) + continue; + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + if ((n < 0) || !(*name_ok)(tbuf)) { + had_error++; + continue; + } + cp += n; + /* Store alias. */ + *ap++ = bp; + n = strlen(bp) + 1; /* for the \0 */ + bp += n; + buflen -= n; + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + if (n > buflen) { + had_error++; + continue; + } + strcpy(bp, tbuf); + host.h_name = bp; + bp += n; + buflen -= n; + continue; + } + if (qtype == T_PTR && type == T_CNAME) { + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + if ((n < 0) || !res_hnok(tbuf)) { + had_error++; + continue; + } + cp += n; + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + if (n > buflen) { + had_error++; + continue; + } + strcpy(bp, tbuf); + tname = bp; + bp += n; + buflen -= n; + continue; + } + if (type != qtype) { + syslog(LOG_NOTICE|LOG_AUTH, + "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"", + qname, p_class(C_IN), p_type(qtype), + p_type(type)); + cp += n; + continue; /* XXX - had_error++ ? */ + } + switch (type) { + case T_PTR: + if (strcasecmp(tname, bp) != 0) { + syslog(LOG_NOTICE|LOG_AUTH, + AskedForGot, qname, bp); + cp += n; + continue; /* XXX - had_error++ ? */ + } + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !res_hnok(bp)) { + had_error++; + break; + } +#if MULTI_PTRS_ARE_ALIASES + cp += n; + if (!haveanswer) + host.h_name = bp; + else if (ap < &host_aliases[MAXALIASES-1]) + *ap++ = bp; + else + n = -1; + if (n != -1) { + n = strlen(bp) + 1; /* for the \0 */ + bp += n; + buflen -= n; + } + break; +#else + host.h_name = bp; + if (_res.options & RES_USE_INET6) { + n = strlen(bp) + 1; /* for the \0 */ + bp += n; + buflen -= n; + map_v4v6_hostent(&host, &bp, &buflen); + } + h_errno = NETDB_SUCCESS; + return (&host); +#endif + case T_A: + case T_AAAA: + if (strcasecmp(host.h_name, bp) != 0) { + syslog(LOG_NOTICE|LOG_AUTH, + AskedForGot, host.h_name, bp); + cp += n; + continue; /* XXX - had_error++ ? */ + } + if (n != host.h_length) { + cp += n; + continue; + } + if (!haveanswer) { + register int nn; + + host.h_name = bp; + nn = strlen(bp) + 1; /* for the \0 */ + bp += nn; + buflen -= nn; + } + + bp += sizeof(align) - ((u_long)bp % sizeof(align)); + + if (bp + n >= &hostbuf[sizeof hostbuf]) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("size (%d) too big\n", n); +#endif + had_error++; + continue; + } + if (hap >= &h_addr_ptrs[MAXADDRS-1]) { + if (!toobig++) +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("Too many addresses (%d)\n", MAXADDRS); +#endif + cp += n; + continue; + } + bcopy(cp, *hap++ = bp, n); + bp += n; + buflen -= n; + cp += n; + break; + } + if (!had_error) + haveanswer++; + } + if (haveanswer) { + *ap = NULL; + *hap = NULL; +# if defined(RESOLVSORT) + /* + * Note: we sort even if host can take only one address + * in its return structures - should give it the "best" + * address in that case, not some random one + */ + if (_res.nsort && haveanswer > 1 && qtype == T_A) + addrsort(h_addr_ptrs, haveanswer); +# endif /*RESOLVSORT*/ + if (!host.h_name) { + n = strlen(qname) + 1; /* for the \0 */ + if (n > buflen) + goto try_again; + strcpy(bp, qname); + host.h_name = bp; + bp += n; + buflen -= n; + } + if (_res.options & RES_USE_INET6) + map_v4v6_hostent(&host, &bp, &buflen); + h_errno = NETDB_SUCCESS; + return (&host); + } + try_again: + h_errno = TRY_AGAIN; + return (NULL); +} + +struct hostent * +gethostbyname(name) + const char *name; +{ + struct hostent *hp; + extern struct hostent *_gethtbyname2(); + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return (_gethtbyname2(name, AF_INET)); + + if (_res.options & RES_USE_INET6) { + hp = gethostbyname2(name, AF_INET6); + if (hp) + return (hp); + } + return (gethostbyname2(name, AF_INET)); +} + +struct hostent * +gethostbyname2(name, af) + const char *name; + int af; +{ + querybuf buf; + register const char *cp; + char *bp; + int n, size, type, len, i; + extern struct hostent *_gethtbyname2(), *_yp_gethtbyname(); + register struct hostent *hp; + char lookups[MAXDNSLUS]; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return (_gethtbyname2(name, af)); + + switch (af) { + case AF_INET: + size = INADDRSZ; + type = T_A; + break; + case AF_INET6: + size = IN6ADDRSZ; + type = T_AAAA; + break; + default: + h_errno = NETDB_INTERNAL; + errno = EAFNOSUPPORT; + return (NULL); + } + + host.h_addrtype = af; + host.h_length = size; + + /* + * if there aren't any dots, it could be a user-level alias. + * this is also done in res_query() since we are not the only + * function that looks up host names. + */ + if (!strchr(name, '.') && (cp = __hostalias(name))) + name = cp; + + /* + * disallow names consisting only of digits/dots, unless + * they end in a dot. + */ + if (isdigit(name[0])) + for (cp = name;; ++cp) { + if (!*cp) { + if (*--cp == '.') + break; + /* + * All-numeric, no dot at the end. + * Fake up a hostent as if we'd actually + * done a lookup. + */ + if (inet_pton(af, name, host_addr) <= 0) { + h_errno = HOST_NOT_FOUND; + return (NULL); + } + strncpy(hostbuf, name, MAXHOSTNAMELEN-1); + hostbuf[MAXHOSTNAMELEN-1] = '\0'; + bp = hostbuf + MAXHOSTNAMELEN; + len = sizeof hostbuf - MAXHOSTNAMELEN; + host.h_name = hostbuf; + host.h_aliases = host_aliases; + host_aliases[0] = NULL; + h_addr_ptrs[0] = (char *)host_addr; + h_addr_ptrs[1] = NULL; + host.h_addr_list = h_addr_ptrs; + if (_res.options & RES_USE_INET6) + map_v4v6_hostent(&host, &bp, &len); + h_errno = NETDB_SUCCESS; + return (&host); + } + if (!isdigit(*cp) && *cp != '.') + break; + } + if ((isxdigit(name[0]) && strchr(name, ':') != NULL) || + name[0] == ':') + for (cp = name;; ++cp) { + if (!*cp) { + if (*--cp == '.') + break; + /* + * All-IPv6-legal, no dot at the end. + * Fake up a hostent as if we'd actually + * done a lookup. + */ + if (inet_pton(af, name, host_addr) <= 0) { + h_errno = HOST_NOT_FOUND; + return (NULL); + } + strncpy(hostbuf, name, MAXHOSTNAMELEN-1); + hostbuf[MAXHOSTNAMELEN-1] = '\0'; + bp = hostbuf + MAXHOSTNAMELEN; + len = sizeof hostbuf - MAXHOSTNAMELEN; + host.h_name = hostbuf; + host.h_aliases = host_aliases; + host_aliases[0] = NULL; + h_addr_ptrs[0] = (char *)host_addr; + h_addr_ptrs[1] = NULL; + host.h_addr_list = h_addr_ptrs; + h_errno = NETDB_SUCCESS; + return (&host); + } + if (!isxdigit(*cp) && *cp != ':' && *cp != '.') + break; + } + + bcopy(_res.lookups, lookups, sizeof lookups); + if (lookups[0] == '\0') + strncpy(lookups, "bf", sizeof lookups); + + hp = (struct hostent *)NULL; + for (i = 0; i < MAXDNSLUS && hp == NULL && lookups[i]; i++) { + switch (lookups[i]) { +#ifdef YP + case 'y': + /* YP only supports AF_INET. */ + if (af == AF_INET) + hp = _yp_gethtbyname(name); + break; +#endif + case 'b': + if ((n = res_search(name, C_IN, type, buf.buf, + sizeof(buf))) < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("res_search failed\n"); +#endif + break; + } + hp = getanswer(&buf, n, name, type); + break; + case 'f': + hp = _gethtbyname2(name, af); + break; + } + } + /* XXX h_errno not correct in all cases... */ + return (hp); +} + +struct hostent * +gethostbyaddr(addr, len, af) + const char *addr; /* XXX should have been def'd as u_char! */ + int len, af; +{ + const u_char *uaddr = (const u_char *)addr; + static const u_char mapped[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0xff,0xff }; + static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 }; + int n, size, i; + querybuf buf; + register struct hostent *hp; + char qbuf[MAXDNAME+1], *qp; + extern struct hostent *_gethtbyaddr(), *_yp_gethtbyaddr(); + char lookups[MAXDNSLUS]; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return (_gethtbyaddr(addr, len, af)); + + if (af == AF_INET6 && len == IN6ADDRSZ && + (!bcmp(uaddr, mapped, sizeof mapped) || + !bcmp(uaddr, tunnelled, sizeof tunnelled))) { + /* Unmap. */ + addr += sizeof mapped; + uaddr += sizeof mapped; + af = AF_INET; + len = INADDRSZ; + } + switch (af) { + case AF_INET: + size = INADDRSZ; + break; + case AF_INET6: + size = IN6ADDRSZ; + break; + default: + errno = EAFNOSUPPORT; + h_errno = NETDB_INTERNAL; + return (NULL); + } + if (size != len) { + errno = EINVAL; + h_errno = NETDB_INTERNAL; + return (NULL); + } + switch (af) { + case AF_INET: + (void) sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa", + (uaddr[3] & 0xff), + (uaddr[2] & 0xff), + (uaddr[1] & 0xff), + (uaddr[0] & 0xff)); + break; + case AF_INET6: + qp = qbuf; + for (n = IN6ADDRSZ - 1; n >= 0; n--) { + qp += sprintf(qp, "%x.%x.", + uaddr[n] & 0xf, + (uaddr[n] >> 4) & 0xf); + } + strcpy(qp, "ip6.int"); + break; + } + + bcopy(_res.lookups, lookups, sizeof lookups); + if (lookups[0] == '\0') + strncpy(lookups, "bf", sizeof lookups); + + hp = (struct hostent *)NULL; + for (i = 0; i < MAXDNSLUS && hp == NULL && lookups[i]; i++) { + switch (lookups[i]) { +#ifdef YP + case 'y': + /* YP only supports AF_INET. */ + if (af == AF_INET) + hp = _yp_gethtbyaddr(addr); + break; +#endif + case 'b': + n = res_query(qbuf, C_IN, T_PTR, (u_char *)buf.buf, + sizeof buf.buf); + if (n < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("res_query failed\n"); +#endif + break; + } + if (!(hp = getanswer(&buf, n, qbuf, T_PTR))) + break; + hp->h_addrtype = af; + hp->h_length = len; + bcopy(addr, host_addr, len); + h_addr_ptrs[0] = (char *)host_addr; + h_addr_ptrs[1] = NULL; + if (af == AF_INET && (_res.options & RES_USE_INET6)) { + map_v4v6_address((char*)host_addr, + (char*)host_addr); + hp->h_addrtype = AF_INET6; + hp->h_length = IN6ADDRSZ; + } + h_errno = NETDB_SUCCESS; + break; + case 'f': + hp = _gethtbyaddr(addr, len, af); + break; + } + } + /* XXX h_errno not correct in all cases... */ + return (hp); +} + +void +_sethtent(f) + int f; +{ + if (hostf == NULL) + hostf = fopen(_PATH_HOSTS, "r" ); + else + rewind(hostf); + stayopen = f; +} + +void +_endhtent() +{ + if (hostf && !stayopen) { + (void) fclose(hostf); + hostf = NULL; + } +} + +struct hostent * +_gethtent() +{ + char *p; + register char *cp, **q; + int af; + size_t len; + + if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) { + h_errno = NETDB_INTERNAL; + return (NULL); + } + again: + if ((p = fgetln(hostf, &len)) == NULL) { + h_errno = HOST_NOT_FOUND; + return (NULL); + } + if (p[len-1] == '\n') + len--; + if (len >= sizeof(hostbuf) || len == 0) + goto again; + p = memcpy(hostbuf, p, len); + hostbuf[len] = '\0'; + if (*p == '#') + goto again; + if ((cp = strchr(p, '#'))) + *cp = '\0'; + if (!(cp = strpbrk(p, " \t"))) + goto again; + *cp++ = '\0'; + if ((_res.options & RES_USE_INET6) && + inet_pton(AF_INET6, p, host_addr) > 0) { + af = AF_INET6; + len = IN6ADDRSZ; + } else if (inet_pton(AF_INET, p, host_addr) > 0) { + if (_res.options & RES_USE_INET6) { + map_v4v6_address((char*)host_addr, (char*)host_addr); + af = AF_INET6; + len = IN6ADDRSZ; + } else { + af = AF_INET; + len = INADDRSZ; + } + } else { + goto again; + } + h_addr_ptrs[0] = (char *)host_addr; + h_addr_ptrs[1] = NULL; + host.h_addr_list = h_addr_ptrs; + host.h_length = len; + host.h_addrtype = af; + while (*cp == ' ' || *cp == '\t') + cp++; + host.h_name = cp; + q = host.h_aliases = host_aliases; + if ((cp = strpbrk(cp, " \t"))) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &host_aliases[MAXALIASES - 1]) + *q++ = cp; + if ((cp = strpbrk(cp, " \t"))) + *cp++ = '\0'; + } + *q = NULL; + if (_res.options & RES_USE_INET6) { + char *bp = hostbuf; + int buflen = sizeof hostbuf; + + map_v4v6_hostent(&host, &bp, &buflen); + } + h_errno = NETDB_SUCCESS; + return (&host); +} + +struct hostent * +_gethtbyname(name) + const char *name; +{ + extern struct hostent *_gethtbyname2(); + struct hostent *hp; + + if (_res.options & RES_USE_INET6) { + hp = _gethtbyname2(name, AF_INET6); + if (hp) + return (hp); + } + return (_gethtbyname2(name, AF_INET)); +} + +struct hostent * +_gethtbyname2(name, af) + const char *name; + int af; +{ + register struct hostent *p; + register char **cp; + + _sethtent(0); + while ((p = _gethtent())) { + if (p->h_addrtype != af) + continue; + if (strcasecmp(p->h_name, name) == 0) + break; + for (cp = p->h_aliases; *cp != 0; cp++) + if (strcasecmp(*cp, name) == 0) + goto found; + } + found: + _endhtent(); + return (p); +} + +struct hostent * +_gethtbyaddr(addr, len, af) + const char *addr; + int len, af; +{ + register struct hostent *p; + + _sethtent(0); + while ((p = _gethtent())) + if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len)) + break; + _endhtent(); + return (p); +} + +#ifdef YP +struct hostent * +_yphostent(line) + char *line; +{ + static struct in_addr host_addrs[MAXADDRS]; + char *p = line; + char *cp, **q; + char **hap; + struct in_addr *buf; + int more; + + host.h_name = NULL; + host.h_addr_list = h_addr_ptrs; + host.h_length = INADDRSZ; + host.h_addrtype = AF_INET; + hap = h_addr_ptrs; + buf = host_addrs; + q = host.h_aliases = host_aliases; + +nextline: + more = 0; + cp = strpbrk(p, " \t"); + if (cp == NULL) { + if (host.h_name == NULL) + return (NULL); + else + goto done; + } + *cp++ = '\0'; + + *hap++ = (char *)buf; + (void) inet_aton(p, buf++); + + while (*cp == ' ' || *cp == '\t') + cp++; + p = cp; + cp = strpbrk(p, " \t\n"); + if (cp != NULL) { + if (*cp == '\n') + more = 1; + *cp++ = '\0'; + } + if (!host.h_name) + host.h_name = p; + else if (strcmp(host.h_name, p)==0) + ; + else if (q < &host_aliases[MAXALIASES - 1]) + *q++ = p; + p = cp; + if (more) + goto nextline; + + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (*cp == '\n') { + cp++; + goto nextline; + } + if (q < &host_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } +done: + *q = NULL; + *hap = NULL; + return (&host); +} + +struct hostent * +_yp_gethtbyaddr(addr) + const char *addr; +{ + struct hostent *hp = (struct hostent *)NULL; + static char *__ypcurrent; + int __ypcurrentlen, r; + char name[sizeof("xxx.xxx.xxx.xxx") + 1]; + + if (!__ypdomain) { + if (_yp_check(&__ypdomain) == 0) + return (hp); + } + sprintf(name, "%u.%u.%u.%u", + ((unsigned)addr[0] & 0xff), + ((unsigned)addr[1] & 0xff), + ((unsigned)addr[2] & 0xff), + ((unsigned)addr[3] & 0xff)); + if (__ypcurrent) + free(__ypcurrent); + __ypcurrent = NULL; + r = yp_match(__ypdomain, "hosts.byaddr", name, + strlen(name), &__ypcurrent, &__ypcurrentlen); + if (r==0) + hp = _yphostent(__ypcurrent); + if (hp==NULL) + h_errno = HOST_NOT_FOUND; + return (hp); +} + +struct hostent * +_yp_gethtbyname(name) + const char *name; +{ + struct hostent *hp = (struct hostent *)NULL; + static char *__ypcurrent; + int __ypcurrentlen, r; + + if (strlen(name) >= MAXHOSTNAMELEN) + return (NULL); + if (!__ypdomain) { + if (_yp_check(&__ypdomain) == 0) + return (hp); + } + if (__ypcurrent) + free(__ypcurrent); + __ypcurrent = NULL; + r = yp_match(__ypdomain, "hosts.byname", name, + strlen(name), &__ypcurrent, &__ypcurrentlen); + if (r == 0) + hp = _yphostent(__ypcurrent); + if (hp == NULL) + h_errno = HOST_NOT_FOUND; + return (hp); +} +#endif + +static void +map_v4v6_address(src, dst) + const char *src; + char *dst; +{ + u_char *p = (u_char *)dst; + char tmp[INADDRSZ]; + int i; + + /* Stash a temporary copy so our caller can update in place. */ + bcopy(src, tmp, INADDRSZ); + /* Mark this ipv6 addr as a mapped ipv4. */ + for (i = 0; i < 10; i++) + *p++ = 0x00; + *p++ = 0xff; + *p++ = 0xff; + /* Retrieve the saved copy and we're done. */ + bcopy(tmp, (void*)p, INADDRSZ); +} + +static void +map_v4v6_hostent(hp, bpp, lenp) + struct hostent *hp; + char **bpp; + int *lenp; +{ + char **ap; + + if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ) + return; + hp->h_addrtype = AF_INET6; + hp->h_length = IN6ADDRSZ; + for (ap = hp->h_addr_list; *ap; ap++) { + int i = sizeof(align) - ((u_long)*bpp % sizeof(align)); + + if (*lenp < (i + IN6ADDRSZ)) { + /* Out of memory. Truncate address list here. XXX */ + *ap = NULL; + return; + } + *bpp += i; + *lenp -= i; + map_v4v6_address(*ap, *bpp); + *ap = *bpp; + *bpp += IN6ADDRSZ; + *lenp -= IN6ADDRSZ; + } +} + +struct hostent * +gethostent() +{ + return (_gethtent()); +} + +#ifdef RESOLVSORT +static void +addrsort(ap, num) + char **ap; + int num; +{ + int i, j; + char **p; + short aval[MAXADDRS]; + int needsort = 0; + + p = ap; + for (i = 0; i < num; i++, p++) { + for (j = 0 ; (unsigned)j < _res.nsort; j++) + if (_res.sort_list[j].addr.s_addr == + (((struct in_addr *)(*p))->s_addr & _res.sort_list[j].mask)) + break; + aval[i] = j; + if (needsort == 0 && i > 0 && j < aval[i-1]) + needsort = i; + } + if (!needsort) + return; + + while (needsort < num) { + for (j = needsort - 1; j >= 0; j--) { + if (aval[j] > aval[j+1]) { + char *hp; + + i = aval[j]; + aval[j] = aval[j+1]; + aval[j+1] = i; + + hp = ap[j]; + ap[j] = ap[j+1]; + ap[j+1] = hp; + + } else + break; + } + needsort++; + } +} +#endif diff --git a/src/lib/libc/net/getnetbyaddr.c b/src/lib/libc/net/getnetbyaddr.c new file mode 100644 index 0000000000..925d1d5895 --- /dev/null +++ b/src/lib/libc/net/getnetbyaddr.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getnetbyaddr.c,v 1.5 1997/07/09 01:08:28 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include + +extern int _net_stayopen; + +struct netent * +_getnetbyaddr(net, type) + register in_addr_t net; + register int type; +{ + register struct netent *p; + + setnetent(_net_stayopen); + while ((p = getnetent())) + if (p->n_addrtype == type && p->n_net == net) + break; + if (!_net_stayopen) + endnetent(); + return (p); +} diff --git a/src/lib/libc/net/getnetbyname.c b/src/lib/libc/net/getnetbyname.c new file mode 100644 index 0000000000..4e39cf6860 --- /dev/null +++ b/src/lib/libc/net/getnetbyname.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getnetbyname.c,v 1.5 1997/07/09 01:08:29 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +extern int _net_stayopen; + +struct netent * +_getnetbyname(name) + register const char *name; +{ + register struct netent *p; + register char **cp; + + setnetent(_net_stayopen); + while ((p = getnetent())) { + if (strcasecmp(p->n_name, name) == 0) + break; + for (cp = p->n_aliases; *cp != 0; cp++) + if (strcasecmp(*cp, name) == 0) + goto found; + } +found: + if (!_net_stayopen) + endnetent(); + return (p); +} diff --git a/src/lib/libc/net/getnetent.3 b/src/lib/libc/net/getnetent.3 new file mode 100644 index 0000000000..5864b75839 --- /dev/null +++ b/src/lib/libc/net/getnetent.3 @@ -0,0 +1,148 @@ +.\" $OpenBSD: getnetent.3,v 1.5 1998/03/16 05:06:56 millert Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd March 13, 1997 +.Dt GETNETENT 3 +.Os +.Sh NAME +.Nm getnetent , +.Nm getnetbyaddr , +.Nm getnetbyname , +.Nm setnetent , +.Nm endnetent +.Nd get network entry +.Sh SYNOPSIS +.Fd #include +.Ft struct netent * +.Fn getnetent +.Ft struct netent * +.Fn getnetbyname "char *name" +.Ft struct netent * +.Fn getnetbyaddr "in_addr_t net" "int type" +.Fn setnetent "int stayopen" +.Fn endnetent +.Sh DESCRIPTION +The +.Fn getnetent , +.Fn getnetbyname , +and +.Fn getnetbyaddr +functions +each return a pointer to an object with the +following structure +containing the broken-out +fields of a line in the network data base, +.Pa /etc/networks . +.Bd -literal -offset indent +struct netent { + char *n_name; /* official name of net */ + char **n_aliases; /* alias list */ + int n_addrtype; /* net number type */ + in_addr_t n_net; /* net number */ +}; +.Ed +.Pp +The members of this structure are: +.Bl -tag -width n_addrtype +.It Fa n_name +The official name of the network. +.It Fa n_aliases +A zero terminated list of alternate names for the network. +.It Fa n_addrtype +The type of the network number returned; currently only AF_INET. +.It Fa n_net +The network number. Network numbers are returned in machine byte +order. +.El +.Pp +The +.Fn getnetent +function +reads the next line of the file, opening the file if necessary. +.Pp +The +.Fn setnetent +function +opens and rewinds the file. If the +.Fa stayopen +flag is non-zero, +the net data base will not be closed after each call to +.Fn getnetbyname +or +.Fn getnetbyaddr . +.Pp +The +.Fn endnetent +function +closes the file. +.Pp +The +.Fn getnetbyname +function +and +.Fn getnetbyaddr +search the domain name server if the system is configured to use one. +If the search fails, or no name server is configured, they sequentially +search from the beginning of the file until a matching net name or +net address and type is found, or until +.Dv EOF +is encountered. +Network numbers are supplied in host order. +.Sh FILES +.Bl -tag -width /etc/networks -compact +.It Pa /etc/networks +.El +.Sh DIAGNOSTICS +Null pointer +(0) returned on +.Dv EOF +or error. +.Sh SEE ALSO +.Xr networks 5 , +.Xr resolver 3 +.Sh HISTORY +The +.Fn getnetent , +.Fn getnetbyaddr , +.Fn getnetbyname , +.Fn setnetent , +and +.Fn endnetent +functions appeared in +.Bx 4.2 . +.Sh BUGS +The data space used by these functions is static; if future use +requires the data, it should be copied before any subsequent calls +to these functions overwrite it. Only Internet network numbers +are currently understood. Expecting network numbers to fit in no +more than 32 bits is naive. diff --git a/src/lib/libc/net/getnetent.c b/src/lib/libc/net/getnetent.c new file mode 100644 index 0000000000..8f618a1d5e --- /dev/null +++ b/src/lib/libc/net/getnetent.c @@ -0,0 +1,129 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getnetent.c,v 1.8 1998/03/16 05:06:57 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include + +#define MAXALIASES 35 + +static FILE *netf; +static char line[BUFSIZ+1]; +static struct netent net; +static char *net_aliases[MAXALIASES]; +int _net_stayopen; + +void +setnetent(f) + int f; +{ + if (netf == NULL) + netf = fopen(_PATH_NETWORKS, "r" ); + else + rewind(netf); + _net_stayopen |= f; +} + +void +endnetent() +{ + if (netf) { + fclose(netf); + netf = NULL; + } + _net_stayopen = 0; +} + +struct netent * +getnetent() +{ + char *p, *cp, **q; + size_t len; + + if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL) + return (NULL); +again: + if ((p = fgetln(netf, &len)) == NULL) + return (NULL); + if (p[len-1] == '\n') + len--; + if (len >= sizeof(line) || len == 0) + goto again; + p = memcpy(line, p, len); + line[len] = '\0'; + if (*p == '#') + goto again; + if ((cp = strchr(p, '#')) != NULL) + *cp = '\0'; + net.n_name = p; + if (strlen(net.n_name) >= MAXHOSTNAMELEN-1) + net.n_name[MAXHOSTNAMELEN-1] = '\0'; + cp = strpbrk(p, " \t"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + while (*cp == ' ' || *cp == '\t') + cp++; + p = strpbrk(cp, " \t"); + if (p != NULL) + *p++ = '\0'; + net.n_net = inet_network(cp); + net.n_addrtype = AF_INET; + q = net.n_aliases = net_aliases; + if (p != NULL) + cp = p; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &net_aliases[MAXALIASES - 1]) { + *q++ = cp; + if (strlen(cp) >= MAXHOSTNAMELEN-1) + cp[MAXHOSTNAMELEN-1] = '\0'; + } + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&net); +} diff --git a/src/lib/libc/net/getnetnamadr.c b/src/lib/libc/net/getnetnamadr.c new file mode 100644 index 0000000000..de208bbac9 --- /dev/null +++ b/src/lib/libc/net/getnetnamadr.c @@ -0,0 +1,382 @@ +/* $OpenBSD: getnetnamadr.c,v 1.10 1997/12/02 01:34:05 deraadt Exp $ */ + +/* + * Copyright (c) 1997, Jason Downs. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Jason Downs for the + * OpenBSD system. + * 4. Neither the name(s) of the author(s) nor the name OpenBSD + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* Copyright (c) 1993 Carlos Leandro and Rui Salgueiro + * Dep. Matematica Universidade de Coimbra, Portugal, Europe + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + */ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)getnetbyaddr.c 8.1 (Berkeley) 6/4/93"; +static char sccsid_[] = "from getnetnamadr.c 1.4 (Coimbra) 93/06/03"; +static char rcsid[] = "$From: getnetnamadr.c,v 8.7 1996/08/05 08:31:35 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: getnetnamadr.c,v 1.10 1997/12/02 01:34:05 deraadt Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +extern int h_errno; + +struct netent *_getnetbyaddr __P((in_addr_t net, int type)); +struct netent *_getnetbyname __P((const char *name)); + +int _hokchar __P((const char *)); + +#define BYADDR 0 +#define BYNAME 1 +#define MAXALIASES 35 + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +typedef union { + HEADER hdr; + u_char buf[MAXPACKET]; +} querybuf; + +typedef union { + long al; + char ac; +} align; + +static struct netent * +getnetanswer(answer, anslen, net_i) + querybuf *answer; + int anslen; + int net_i; +{ + + register HEADER *hp; + register u_char *cp; + register int n; + u_char *eom; + int type, class, buflen, ancount, qdcount, haveanswer, i, nchar; + char aux1[MAXHOSTNAMELEN], aux2[MAXHOSTNAMELEN], ans[MAXHOSTNAMELEN]; + char *in, *st, *pauxt, *bp, **ap; + char *paux1 = &aux1[0], *paux2 = &aux2[0], flag = 0; + static struct netent net_entry; + static char *net_aliases[MAXALIASES], netbuf[BUFSIZ+1]; + + /* + * find first satisfactory answer + * + * answer --> +------------+ ( MESSAGE ) + * | Header | + * +------------+ + * | Question | the question for the name server + * +------------+ + * | Answer | RRs answering the question + * +------------+ + * | Authority | RRs pointing toward an authority + * | Additional | RRs holding additional information + * +------------+ + */ + eom = answer->buf + anslen; + hp = &answer->hdr; + ancount = ntohs(hp->ancount); /* #/records in the answer section */ + qdcount = ntohs(hp->qdcount); /* #/entries in the question section */ + bp = netbuf; + buflen = sizeof(netbuf); + cp = answer->buf + HFIXEDSZ; + if (!qdcount) { + if (hp->aa) + h_errno = HOST_NOT_FOUND; + else + h_errno = TRY_AGAIN; + return (NULL); + } + while (qdcount-- > 0) + cp += __dn_skipname(cp, eom) + QFIXEDSZ; + ap = net_aliases; + *ap = NULL; + net_entry.n_aliases = net_aliases; + haveanswer = 0; + while (--ancount >= 0 && cp < eom) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); +#ifdef USE_RESOLV_NAME_OK + if ((n < 0) || !res_dnok(bp)) +#else + if ((n < 0) || !_hokchar(bp)) +#endif + break; + cp += n; + ans[0] = '\0'; + (void)strncpy(&ans[0], bp, sizeof ans-1); + ans[sizeof ans-1] = '\0'; + GETSHORT(type, cp); + GETSHORT(class, cp); + cp += INT32SZ; /* TTL */ + GETSHORT(n, cp); + if (class == C_IN && type == T_PTR) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !res_hnok(bp)) { + cp += n; + return (NULL); + } + cp += n; + *ap++ = bp; + bp += strlen(bp) + 1; + net_entry.n_addrtype = + (class == C_IN) ? AF_INET : AF_UNSPEC; + haveanswer++; + } + } + if (haveanswer) { + *ap = NULL; + switch (net_i) { + case BYADDR: + net_entry.n_name = *net_entry.n_aliases; + net_entry.n_net = 0L; + break; + case BYNAME: + in = *net_entry.n_aliases; + net_entry.n_name = &ans[0]; + aux2[0] = '\0'; + for (i = 0; i < 4; i++) { + for (st = in, nchar = 0; + *st != '.'; + st++, nchar++) + ; + if (nchar != 1 || *in != '0' || flag) { + flag = 1; + (void)strncpy(paux1, + (i==0) ? in : in-1, + (i==0) ?nchar : nchar+1); + paux1[(i==0) ? nchar : nchar+1] = '\0'; + pauxt = paux2; + paux2 = strcat(paux1, paux2); + paux1 = pauxt; + } + in = ++st; + } + net_entry.n_net = inet_network(paux2); + break; + } + net_entry.n_aliases++; + return (&net_entry); + } + h_errno = TRY_AGAIN; + return (NULL); +} + +struct netent * +getnetbyaddr(net, net_type) + register in_addr_t net; + register int net_type; +{ + unsigned int netbr[4]; + int nn, anslen; + querybuf buf; + char qbuf[MAXDNAME]; + in_addr_t net2; + struct netent *net_entry = NULL; + char lookups[MAXDNSLUS]; + int i; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return(_getnetbyaddr(net, net_type)); + + bcopy(_res.lookups, lookups, sizeof lookups); + if (lookups[0] == '\0') + strncpy(lookups, "bf", sizeof lookups); + + for (i = 0; i < MAXDNSLUS && lookups[i]; i++) { + switch (lookups[i]) { +#ifdef YP + case 'y': + /* There is no YP support. */ + break; +#endif /* YP */ + case 'b': + if (net_type != AF_INET) + break; /* DNS only supports AF_INET? */ + + for (nn = 4, net2 = net; net2; net2 >>= 8) + netbr[--nn] = net2 & 0xff; + switch (nn) { + case 3: /* Class A */ + snprintf(qbuf, sizeof(qbuf), + "0.0.0.%u.in-addr.arpa", netbr[3]); + break; + case 2: /* Class B */ + snprintf(qbuf, sizeof(qbuf), + "0.0.%u.%u.in-addr.arpa", + netbr[3], netbr[2]); + break; + case 1: /* Class C */ + snprintf(qbuf, sizeof(qbuf), + "0.%u.%u.%u.in-addr.arpa", + netbr[3], netbr[2], netbr[1]); + break; + case 0: /* Class D - E */ + snprintf(qbuf, sizeof(qbuf), + "%u.%u.%u.%u.in-addr.arpa", + netbr[3], netbr[2], netbr[1], netbr[0]); + break; + } + anslen = res_query(qbuf, C_IN, T_PTR, (u_char *)&buf, + sizeof(buf)); + if (anslen < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("res_query failed\n"); +#endif + break; + } + net_entry = getnetanswer(&buf, anslen, BYADDR); + if (net_entry != NULL) { + unsigned u_net = net; /* maybe net should be unsigned ? */ + + /* Strip trailing zeros */ + while ((u_net & 0xff) == 0 && u_net != 0) + u_net >>= 8; + net_entry->n_net = u_net; + return (net_entry); + } + break; + case 'f': + net_entry = _getnetbyaddr(net, net_type); + if (net_entry != NULL) + return (net_entry); + } + } + + /* Nothing matched. */ + return (NULL); +} + +struct netent * +getnetbyname(net) + register const char *net; +{ + int anslen; + querybuf buf; + char qbuf[MAXDNAME]; + struct netent *net_entry = NULL; + char lookups[MAXDNSLUS]; + int i; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return (_getnetbyname(net)); + + bcopy(_res.lookups, lookups, sizeof lookups); + if (lookups[0] == '\0') + strncpy(lookups, "bf", sizeof lookups); + + for (i = 0; i < MAXDNSLUS && lookups[i]; i++) { + switch (lookups[i]) { +#ifdef YP + case 'y': + /* There is no YP support. */ + break; +#endif /* YP */ + case 'b': + strncpy(qbuf, net, sizeof qbuf-1); + qbuf[sizeof qbuf-1] = '\0'; + anslen = res_search(qbuf, C_IN, T_PTR, (u_char *)&buf, + sizeof(buf)); + if (anslen < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("res_query failed\n"); +#endif + break; + } + net_entry = getnetanswer(&buf, anslen, BYNAME); + if (net_entry != NULL) + return (net_entry); + break; + case 'f': + net_entry = _getnetbyname(net); + if (net_entry != NULL) + return (net_entry); + break; + } + } + + /* Nothing matched. */ + return (NULL); +} diff --git a/src/lib/libc/net/getproto.c b/src/lib/libc/net/getproto.c new file mode 100644 index 0000000000..474d8d9427 --- /dev/null +++ b/src/lib/libc/net/getproto.c @@ -0,0 +1,55 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getproto.c,v 1.3 1997/07/09 01:08:31 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include + +extern int _proto_stayopen; + +struct protoent * +getprotobynumber(proto) + register int proto; +{ + register struct protoent *p; + + setprotoent(_proto_stayopen); + while ((p = getprotoent())) + if (p->p_proto == proto) + break; + if (!_proto_stayopen) + endprotoent(); + return (p); +} diff --git a/src/lib/libc/net/getprotoent.3 b/src/lib/libc/net/getprotoent.3 new file mode 100644 index 0000000000..f67987954f --- /dev/null +++ b/src/lib/libc/net/getprotoent.3 @@ -0,0 +1,144 @@ +.\" $OpenBSD: getprotoent.3,v 1.2 1996/08/19 08:28:50 tholo Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd June 4, 1993 +.Dt GETPROTOENT 3 +.Os BSD 4.2 +.Sh NAME +.Nm getprotoent , +.Nm getprotobynumber , +.Nm getprotobyname , +.Nm setprotoent , +.Nm endprotoent +.Nd get protocol entry +.Sh SYNOPSIS +.Fd #include +.Ft struct protoent * +.Fn getprotoent +.Ft struct protoent * +.Fn getprotobyname "char *name" +.Ft struct protoent * +.Fn getprotobynumber "int proto" +.Fn setprotoent "int stayopen" +.Fn endprotoent +.Sh DESCRIPTION +The +.Fn getprotoent , +.Fn getprotobyname , +and +.Fn getprotobynumber +functions +each return a pointer to an object with the +following structure +containing the broken-out +fields of a line in the network protocol data base, +.Pa /etc/protocols . +.Bd -literal -offset indent +.Pp +struct protoent { + char *p_name; /* official name of protocol */ + char **p_aliases; /* alias list */ + int p_proto; /* protocol number */ +}; +.Ed +.Pp +The members of this structure are: +.Bl -tag -width p_aliases +.It Fa p_name +The official name of the protocol. +.It Fa p_aliases +A zero terminated list of alternate names for the protocol. +.It Fa p_proto +The protocol number. +.El +.Pp +The +.Fn getprotoent +function +reads the next line of the file, opening the file if necessary. +.Pp +The +.Fn setprotoent +function +opens and rewinds the file. If the +.Fa stayopen +flag is non-zero, +the net data base will not be closed after each call to +.Fn getprotobyname +or +.Fn getprotobynumber . +.Pp +The +.Fn endprotoent +function +closes the file. +.Pp +The +.Fn getprotobyname +function +and +.Fn getprotobynumber +sequentially search from the beginning +of the file until a matching +protocol name or +protocol number is found, +or until +.Dv EOF +is encountered. +.Sh RETURN VALUES +Null pointer +(0) returned on +.Dv EOF +or error. +.Sh FILES +.Bl -tag -width /etc/protocols -compact +.It Pa /etc/protocols +.El +.Sh SEE ALSO +.Xr protocols 5 +.Sh HISTORY +The +.Fn getprotoent , +.Fn getprotobynumber , +.Fn getprotobyname , +.Fn setprotoent , +and +.Fn endprotoent +functions appeared in +.Bx 4.2 . +.Sh BUGS +These functions use a static data space; +if the data is needed for future use, it should be +copied before any subsequent calls overwrite it. +Only the Internet +protocols are currently understood. diff --git a/src/lib/libc/net/getprotoent.c b/src/lib/libc/net/getprotoent.c new file mode 100644 index 0000000000..2bef526e7a --- /dev/null +++ b/src/lib/libc/net/getprotoent.c @@ -0,0 +1,123 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getprotoent.c,v 1.3 1998/03/16 05:06:59 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include + +#define MAXALIASES 35 + +static FILE *protof = NULL; +static char line[BUFSIZ+1]; +static struct protoent proto; +static char *proto_aliases[MAXALIASES]; +int _proto_stayopen; + +void +setprotoent(f) + int f; +{ + if (protof == NULL) + protof = fopen(_PATH_PROTOCOLS, "r" ); + else + rewind(protof); + _proto_stayopen |= f; +} + +void +endprotoent() +{ + if (protof) { + fclose(protof); + protof = NULL; + } + _proto_stayopen = 0; +} + +struct protoent * +getprotoent() +{ + char *p, *cp, **q; + size_t len; + + if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL) + return (NULL); +again: + if ((p = fgetln(protof, &len)) == NULL) + return (NULL); + if (p[len-1] == '\n') + len--; + if (len >= sizeof(line) || len == 0) + goto again; + p = memcpy(line, p, len); + line[len] = '\0'; + if (*p == '#') + goto again; + if ((cp = strchr(p, '#')) != NULL) + *cp = '\0'; + proto.p_name = p; + cp = strpbrk(p, " \t"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + while (*cp == ' ' || *cp == '\t') + cp++; + p = strpbrk(cp, " \t"); + if (p != NULL) + *p++ = '\0'; + proto.p_proto = atoi(cp); + q = proto.p_aliases = proto_aliases; + if (p != NULL) { + cp = p; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &proto_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + } + *q = NULL; + return (&proto); +} diff --git a/src/lib/libc/net/getprotoname.c b/src/lib/libc/net/getprotoname.c new file mode 100644 index 0000000000..7a4e5fede5 --- /dev/null +++ b/src/lib/libc/net/getprotoname.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getprotoname.c,v 1.3 1997/07/09 01:08:32 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +extern int _proto_stayopen; + +struct protoent * +getprotobyname(name) + register const char *name; +{ + register struct protoent *p; + register char **cp; + + setprotoent(_proto_stayopen); + while ((p = getprotoent())) { + if (strcmp(p->p_name, name) == 0) + break; + for (cp = p->p_aliases; *cp != 0; cp++) + if (strcmp(*cp, name) == 0) + goto found; + } +found: + if (!_proto_stayopen) + endprotoent(); + return (p); +} diff --git a/src/lib/libc/net/getservbyname.c b/src/lib/libc/net/getservbyname.c new file mode 100644 index 0000000000..25f0e27d06 --- /dev/null +++ b/src/lib/libc/net/getservbyname.c @@ -0,0 +1,65 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getservbyname.c,v 1.3 1997/07/09 01:08:34 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +extern int _serv_stayopen; + +struct servent * +getservbyname(name, proto) + const char *name, *proto; +{ + register struct servent *p; + register char **cp; + + setservent(_serv_stayopen); + while ((p = getservent())) { + if (strcmp(name, p->s_name) == 0) + goto gotname; + for (cp = p->s_aliases; *cp; cp++) + if (strcmp(name, *cp) == 0) + goto gotname; + continue; +gotname: + if (proto == 0 || strcmp(p->s_proto, proto) == 0) + break; + } + if (!_serv_stayopen) + endservent(); + return (p); +} diff --git a/src/lib/libc/net/getservbyport.c b/src/lib/libc/net/getservbyport.c new file mode 100644 index 0000000000..4b063760d2 --- /dev/null +++ b/src/lib/libc/net/getservbyport.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getservbyport.c,v 1.3 1997/07/09 01:08:35 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +extern int _serv_stayopen; + +struct servent * +getservbyport(port, proto) + int port; + const char *proto; +{ + register struct servent *p; + + setservent(_serv_stayopen); + while ((p = getservent())) { + if (p->s_port != port) + continue; + if (proto == 0 || strcmp(p->s_proto, proto) == 0) + break; + } + if (!_serv_stayopen) + endservent(); + return (p); +} diff --git a/src/lib/libc/net/getservent.3 b/src/lib/libc/net/getservent.3 new file mode 100644 index 0000000000..d1684c28c4 --- /dev/null +++ b/src/lib/libc/net/getservent.3 @@ -0,0 +1,155 @@ +.\" $OpenBSD: getservent.3,v 1.3 1996/08/30 02:00:11 millert Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd January 12, 1994 +.Dt GETSERVENT 3 +.Os BSD 4.2 +.Sh NAME +.Nm getservent , +.Nm getservbyport , +.Nm getservbyname , +.Nm setservent , +.Nm endservent +.Nd get service entry +.Sh SYNOPSIS +.Fd #include +.Ft struct servent * +.Fn getservent +.Ft struct servent * +.Fn getservbyname "char *name" "char *proto" +.Ft struct servent * +.Fn getservbyport "int port" "char *proto" +.Ft void +.Fn setservent "int stayopen" +.Ft void +.Fn endservent void +.Sh DESCRIPTION +The +.Fn getservent , +.Fn getservbyname , +and +.Fn getservbyport +functions +each return a pointer to an object with the +following structure +containing the broken-out +fields of a line in the network services data base, +.Pa /etc/services . +.Bd -literal -offset indent +struct servent { + char *s_name; /* official name of service */ + char **s_aliases; /* alias list */ + int s_port; /* port service resides at */ + char *s_proto; /* protocol to use */ +}; +.Ed +.Pp +The members of this structure are: +.Bl -tag -width s_aliases +.It Fa s_name +The official name of the service. +.It Fa s_aliases +A zero terminated list of alternate names for the service. +.It Fa s_port +The port number at which the service resides. +Port numbers are returned in network byte order. +.It Fa s_proto +The name of the protocol to use when contacting the +service. +.El +.Pp +The +.Fn getservent +function +reads the next line of the file, opening the file if necessary. +.Pp +The +.Fn setservent +function +opens and rewinds the file. If the +.Fa stayopen +flag is non-zero, +the net data base will not be closed after each call to +.Fn getservbyname +or +.Fn getservbyport . +.Pp +The +.Fn endservent +function +closes the file. +.Pp +The +.Fn getservbyname +and +.Fn getservbyport +functions +sequentially search from the beginning +of the file until a matching +protocol name or +port number is found, +or until +.Dv EOF +is encountered. +If a protocol name is also supplied (non- +.Dv NULL ) , +searches must also match the protocol. +.ne 1i +.Sh FILES +.Bl -tag -width /etc/services -compact +.It Pa /etc/services +.El +.Sh DIAGNOSTICS +Null pointer +(0) returned on +.Dv EOF +or error. +.Sh SEE ALSO +.Xr getprotoent 3 , +.Xr services 5 +.Sh HISTORY +The +.Fn getservent , +.Fn getservbyport , +.Fn getservbyname , +.Fn setservent , +and +.Fn endservent +functions appeared in +.Bx 4.2 . +.Sh BUGS +These functions use static data storage; +if the data is needed for future use, it should be +copied before any subsequent calls overwrite it. +Expecting port numbers to fit in a 32 bit +quantity is probably naive. diff --git a/src/lib/libc/net/getservent.c b/src/lib/libc/net/getservent.c new file mode 100644 index 0000000000..7d8cb6d8ca --- /dev/null +++ b/src/lib/libc/net/getservent.c @@ -0,0 +1,125 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: getservent.c,v 1.4 1998/03/16 05:07:00 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include + +#define MAXALIASES 35 + +static FILE *servf = NULL; +static char line[BUFSIZ+1]; +static struct servent serv; +static char *serv_aliases[MAXALIASES]; +int _serv_stayopen; + +void +setservent(f) + int f; +{ + if (servf == NULL) + servf = fopen(_PATH_SERVICES, "r" ); + else + rewind(servf); + _serv_stayopen |= f; +} + +void +endservent() +{ + if (servf) { + fclose(servf); + servf = NULL; + } + _serv_stayopen = 0; +} + +struct servent * +getservent() +{ + char *p, *cp, **q; + size_t len; + + if (servf == NULL && (servf = fopen(_PATH_SERVICES, "r" )) == NULL) + return (NULL); +again: + if ((p = fgetln(servf, &len)) == NULL) + return (NULL); + if (p[len-1] == '\n') + len--; + if (len >= sizeof(line) || len == 0) + goto again; + p = memcpy(line, p, len); + line[len] = '\0'; + if (*p == '#') + goto again; + if ((cp = strchr(p, '#')) != NULL) + *cp = '\0'; + serv.s_name = p; + p = strpbrk(p, " \t"); + if (p == NULL) + goto again; + *p++ = '\0'; + while (*p == ' ' || *p == '\t') + p++; + cp = strpbrk(p, ",/"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + serv.s_port = htons((in_port_t)atoi(p)); + serv.s_proto = cp; + q = serv.s_aliases = serv_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &serv_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&serv); +} diff --git a/src/lib/libc/net/herror.c b/src/lib/libc/net/herror.c new file mode 100644 index 0000000000..737bb115a7 --- /dev/null +++ b/src/lib/libc/net/herror.c @@ -0,0 +1,121 @@ +/* $OpenBSD: herror.c,v 1.4 1997/03/13 19:07:28 downsj Exp $ */ + +/* + * ++Copyright++ 1987, 1993 + * - + * Copyright (c) 1987, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93"; +static char rcsid[] = "$From: herror.c,v 8.3 1996/08/05 08:31:35 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: herror.c,v 1.4 1997/03/13 19:07:28 downsj Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include + +const char *h_errlist[] = { + "Resolver Error 0 (no error)", + "Unknown host", /* 1 HOST_NOT_FOUND */ + "Host name lookup failure", /* 2 TRY_AGAIN */ + "Unknown server error", /* 3 NO_RECOVERY */ + "No address associated with name", /* 4 NO_ADDRESS */ +}; +int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] }; + +extern int h_errno; + +/* + * herror -- + * print the error indicated by the h_errno value. + */ +void +herror(s) + const char *s; +{ + struct iovec iov[4]; + register struct iovec *v = iov; + + if (s && *s) { + v->iov_base = (char *)s; + v->iov_len = strlen(s); + v++; + v->iov_base = ": "; + v->iov_len = 2; + v++; + } + v->iov_base = (char *)hstrerror(h_errno); + v->iov_len = strlen(v->iov_base); + v++; + v->iov_base = "\n"; + v->iov_len = 1; + writev(STDERR_FILENO, iov, (v - iov) + 1); +} + +const char * +hstrerror(err) + int err; +{ + if (err < 0) + return ("Resolver internal error"); + else if (err < h_nerr) + return (h_errlist[err]); + return ("Unknown resolver error"); +} diff --git a/src/lib/libc/net/htonl.c b/src/lib/libc/net/htonl.c new file mode 100644 index 0000000000..73b7432731 --- /dev/null +++ b/src/lib/libc/net/htonl.c @@ -0,0 +1,25 @@ +/* + * Written by J.T. Conklin . + * Public domain. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: htonl.c,v 1.4 1996/12/12 03:19:55 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +#undef htonl + +u_int32_t +htonl(x) + u_int32_t x; +{ +#if BYTE_ORDER == LITTLE_ENDIAN + u_char *s = (u_char *)&x; + return (u_int32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]); +#else + return x; +#endif +} diff --git a/src/lib/libc/net/htons.c b/src/lib/libc/net/htons.c new file mode 100644 index 0000000000..47cf25952d --- /dev/null +++ b/src/lib/libc/net/htons.c @@ -0,0 +1,29 @@ +/* + * Written by J.T. Conklin . + * Public domain. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: htons.c,v 1.6 1997/07/25 20:30:07 mickey Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +#undef htons + +u_int16_t +#ifdef __STDC__ +htons(u_int16_t x) +#else +htons(x) + u_int16_t x; +#endif +{ +#if BYTE_ORDER == LITTLE_ENDIAN + u_char *s = (u_char *) &x; + return (u_int16_t)(s[0] << 8 | s[1]); +#else + return x; +#endif +} diff --git a/src/lib/libc/net/inet.3 b/src/lib/libc/net/inet.3 new file mode 100644 index 0000000000..2fb86cd927 --- /dev/null +++ b/src/lib/libc/net/inet.3 @@ -0,0 +1,319 @@ +.\" $OpenBSD: inet.3,v 1.4 1997/06/23 04:01:11 millert Exp $ +.\" $NetBSD: inet.3,v 1.7 1997/06/18 02:25:24 lukem Exp $ +.\" +.\" Copyright (c) 1983, 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)inet.3 8.1 (Berkeley) 6/4/93 +.\" +.Dd June 18, 1997 +.Dt INET 3 +.Os BSD 4.2 +.Sh NAME +.Nm inet_addr , +.Nm inet_aton , +.Nm inet_lnaof , +.Nm inet_makeaddr , +.Nm inet_netof , +.Nm inet_network , +.Nm inet_ntoa , +.Nm inet_ntop , +.Nm inet_pton +.Nd Internet address manipulation routines +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Fd #include +.Ft in_addr_t +.Fn inet_addr "const char *cp" +.Ft int +.Fn inet_aton "const char *cp" "struct in_addr *addr" +.Ft in_addr_t +.Fn inet_lnaof "struct in_addr in" +.Ft struct in_addr +.Fn inet_makeaddr "unsigned long net" "unsigned long lna" +.Ft in_addr_t +.Fn inet_netof "struct in_addr in" +.Ft in_addr_t +.Fn inet_network "const char *cp" +.Ft char * +.Fn inet_ntoa "struct in_addr in" +.Ft const char * +.Fn inet_ntop "int af" "const void *src" "char *dst" "size_t size" +.Ft int +.Fn inet_pton "int af" "const char *src" "void *dst" +.Sh DESCRIPTION +The routines +.Fn inet_aton , +.Fn inet_addr +and +.Fn inet_network +interpret character strings representing +numbers expressed in the Internet standard +.Ql \&. +notation. +The +.Fn inet_pton +function converts a presentation format address (that is, printable form +as held in a character string) to network format (usually a +.Ft struct in_addr +or some other internal binary representation, in network byte order). It +returns 1 if the address was valid for the specified address family, or +0 if the address wasn't parseable in the specified address family, or -1 +if some system error occurred (in which case +.Va errno +will have been set). This function is presently valid for AF_INET and +AF_INET6. The +.Fn inet_aton +routine interprets the specified character string as an Internet address, +placing the address into the structure provided. +It returns 1 if the string was successfully interpreted, +or 0 if the string is invalid. +The +.Fn inet_addr +and +.Fn inet_network +functions return numbers suitable for use +as Internet addresses and Internet network +numbers, respectively. +.Pp +The function +.Fn inet_ntop +converts an address from network format (usually a +.Ft struct in_addr +or some other binary form, in network byte order) to presentation format +(suitable for external display purposes). It returns NULL if a system +error occurs (in which case, +.Va errno +will have been set), or it returns a pointer to the destination string. +The routine +.Fn inet_ntoa +takes an Internet address and returns an +.Tn ASCII +string representing the address in +.Ql \&. +notation. The routine +.Fn inet_makeaddr +takes an Internet network number and a local +network address and constructs an Internet address +from it. The routines +.Fn inet_netof +and +.Fn inet_lnaof +break apart Internet host addresses, returning +the network number and local network address part, +respectively. +.Pp +All Internet addresses are returned in network +order (bytes ordered from left to right). +All network numbers and local address parts are +returned as machine format integer values. +.Sh INTERNET ADDRESSES (IP VERSION 4) +Values specified using the +.Ql \&. +notation take one +of the following forms: +.Bd -literal -offset indent +a.b.c.d +a.b.c +a.b +a +.Ed +.Pp +When four parts are specified, each is interpreted +as a byte of data and assigned, from left to right, +to the four bytes of an Internet address. Note +that when an Internet address is viewed as a 32-bit +integer quantity on a system that uses little-endian +byte order (such as the +.Tn Intel 386, 486 +and +.Tn Pentium +processors) the bytes referred to above appear as +.Dq Li d.c.b.a . +That is, little-endian bytes are ordered from right to left. +.Pp +When a three part address is specified, the last +part is interpreted as a 16-bit quantity and placed +in the right-most two bytes of the network address. +This makes the three part address format convenient +for specifying Class B network addresses as +.Dq Li 128.net.host . +.Pp +When a two part address is supplied, the last part +is interpreted as a 24-bit quantity and placed in +the right most three bytes of the network address. +This makes the two part address format convenient +for specifying Class A network addresses as +.Dq Li net.host . +.Pp +When only one part is given, the value is stored +directly in the network address without any byte +rearrangement. +.Pp +All numbers supplied as +.Dq parts +in a +.Ql \&. +notation +may be decimal, octal, or hexadecimal, as specified +in the C language (i.e., a leading 0x or 0X implies +hexadecimal; otherwise, a leading 0 implies octal; +otherwise, the number is interpreted as decimal). +.Sh INTERNET ADDRESSES (IP VERSION 6) +The presentation format of an IPv6 address is given in [RFC1884 2.2]: +.Pp +There are three conventional forms for representing IPv6 addresses as +text strings: +.Bl -enum +.It +The preferred form is x:x:x:x:x:x:x:x, where the 'x's are the +hexadecimal values of the eight 16-bit pieces of the address. +Examples: +.Bd -literal -offset indent +FEDC:BA98:7654:3210:FEDC:BA98:7654:3210 +1080:0:0:0:8:800:200C:417A +.Ed +.Pp +Note that it is not necessary to write the leading zeros in an +individual field, but there must be at least one numeral in +every field (except for the case described in 2.). +.It +Due to the method of allocating certain styles of IPv6 +addresses, it will be common for addresses to contain long +strings of zero bits. In order to make writing addresses +.Pp +containing zero bits easier a special syntax is available to +compress the zeros. The use of ``::'' indicates multiple groups +of 16-bits of zeros. The ``::'' can only appear once in an +address. The ``::'' can also be used to compress the leading +and/or trailing zeros in an address. +.Pp +For example the following addresses: +.Bd -literal -offset indent +1080:0:0:0:8:800:200C:417A a unicast address +FF01:0:0:0:0:0:0:43 a multicast address +0:0:0:0:0:0:0:1 the loopback address +0:0:0:0:0:0:0:0 the unspecified addresses +.Ed +.Pp +may be represented as: +.Bd -literal -offset indent +1080::8:800:200C:417A a unicast address +FF01::43 a multicast address +::1 the loopback address +:: the unspecified addresses +.Ed +.It +An alternative form that is sometimes more convenient when +dealing with a mixed environment of IPv4 and IPv6 nodes is +x:x:x:x:x:x:d.d.d.d, where the 'x's are the hexadecimal values +of the six high-order 16-bit pieces of the address, and the 'd's +are the decimal values of the four low-order 8-bit pieces of the +address (standard IPv4 representation). Examples: +.Bd -literal -offset indent +0:0:0:0:0:0:13.1.68.3 +0:0:0:0:0:FFFF:129.144.52.38 +.Ed +.Pp +or in compressed form: +.Bd -literal -offset indent +::13.1.68.3 +::FFFF:129.144.52.38 +.Ed +.El +.Sh DIAGNOSTICS +The constant +.Dv INADDR_NONE +is returned by +.Fn inet_addr +and +.Fn inet_network +for malformed requests. +.Sh SEE ALSO +.Xr byteorder 3 , +.Xr gethostbyname 3 , +.Xr getnetent 3 , +.Xr inet_net 3 , +.Xr hosts 5 , +.Xr networks 5 +.Sh STANDARDS +The +.Nm inet_ntop +and +.Nm inet_pton +functions conforms to the IETF IPng BSD API and address formatting +specifications. Note that +.Nm inet_pton +does not accept 1-, 2-, or 3-part dotted addresses; all four parts +must be specified. This is a narrower input set than that accepted by +.Nm inet_aton . +.Sh HISTORY +The +.Nm inet_addr , +.Nm inet_network , +.Nm inet_makeaddr , +.Nm inet_lnaof +and +.Nm inet_netof +functions appeared in +.Bx 4.2 . +The +.Nm inet_aton +and +.Nm inet_ntoa +functions appeared in +.Bx 4.3 . +The +.Nm inet_pton +and +.Nm inet_ntop +functions appeared in BIND 4.9.4. +.Sh BUGS +The value +.Dv INADDR_NONE +(0xffffffff) is a valid broadcast address, but +.Fn inet_addr +cannot return that value without indicating failure. +The newer +.Fn inet_aton +function does not share this problem. +.Pp +The problem of host byte ordering versus network byte ordering is +confusing. +.Pp +The string returned by +.Fn inet_ntoa +resides in a static memory area. +.Pp +.Fn inet_addr +should return a +.Fa "struct in_addr" . diff --git a/src/lib/libc/net/inet_addr.c b/src/lib/libc/net/inet_addr.c new file mode 100644 index 0000000000..5e4dcdafb2 --- /dev/null +++ b/src/lib/libc/net/inet_addr.c @@ -0,0 +1,187 @@ +/* $OpenBSD: inet_addr.c,v 1.5 1997/04/05 21:13:10 millert Exp $ */ + +/* + * ++Copyright++ 1983, 1990, 1993 + * - + * Copyright (c) 1983, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93"; +static char rcsid[] = "$From: inet_addr.c,v 8.5 1996/08/05 08:31:35 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: inet_addr.c,v 1.5 1997/04/05 21:13:10 millert Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include + +/* + * Ascii internet address interpretation routine. + * The value returned is in network order. + */ +in_addr_t +inet_addr(cp) + register const char *cp; +{ + struct in_addr val; + + if (inet_aton(cp, &val)) + return (val.s_addr); + return (INADDR_NONE); +} + +/* + * Check whether "cp" is a valid ascii representation + * of an Internet address and convert to a binary address. + * Returns 1 if the address is valid, 0 if not. + * This replaces inet_addr, the return value from which + * cannot distinguish between failure and a local broadcast address. + */ +int +inet_aton(cp, addr) + register const char *cp; + struct in_addr *addr; +{ + register in_addr_t val; + register int base, n; + register char c; + u_int parts[4]; + register u_int *pp = parts; + + c = *cp; + for (;;) { + /* + * Collect number up to ``.''. + * Values are specified as for C: + * 0x=hex, 0=octal, isdigit=decimal. + */ + if (!isdigit(c)) + return (0); + val = 0; base = 10; + if (c == '0') { + c = *++cp; + if (c == 'x' || c == 'X') + base = 16, c = *++cp; + else + base = 8; + } + for (;;) { + if (isascii(c) && isdigit(c)) { + val = (val * base) + (c - '0'); + c = *++cp; + } else if (base == 16 && isascii(c) && isxdigit(c)) { + val = (val << 4) | + (c + 10 - (islower(c) ? 'a' : 'A')); + c = *++cp; + } else + break; + } + if (c == '.') { + /* + * Internet format: + * a.b.c.d + * a.b.c (with c treated as 16 bits) + * a.b (with b treated as 24 bits) + */ + if (pp >= parts + 3) + return (0); + *pp++ = val; + c = *++cp; + } else + break; + } + /* + * Check for trailing characters. + */ + if (c != '\0' && (!isascii(c) || !isspace(c))) + return (0); + /* + * Concoct the address according to + * the number of parts specified. + */ + n = pp - parts + 1; + switch (n) { + + case 0: + return (0); /* initial nondigit */ + + case 1: /* a -- 32 bits */ + break; + + case 2: /* a.b -- 8.24 bits */ + if (val > 0xffffff) + return (0); + val |= parts[0] << 24; + break; + + case 3: /* a.b.c -- 8.8.16 bits */ + if (val > 0xffff) + return (0); + val |= (parts[0] << 24) | (parts[1] << 16); + break; + + case 4: /* a.b.c.d -- 8.8.8.8 bits */ + if (val > 0xff) + return (0); + val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8); + break; + } + if (addr) + addr->s_addr = htonl(val); + return (1); +} diff --git a/src/lib/libc/net/inet_lnaof.c b/src/lib/libc/net/inet_lnaof.c new file mode 100644 index 0000000000..6aed18699b --- /dev/null +++ b/src/lib/libc/net/inet_lnaof.c @@ -0,0 +1,59 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: inet_lnaof.c,v 1.3 1997/04/05 21:13:11 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +/* + * Return the local network address portion of an + * internet address; handles class a/b/c network + * number formats. + */ +in_addr_t +inet_lnaof(in) + struct in_addr in; +{ + register in_addr_t i = ntohl(in.s_addr); + + if (IN_CLASSA(i)) + return ((i)&IN_CLASSA_HOST); + else if (IN_CLASSB(i)) + return ((i)&IN_CLASSB_HOST); + else + return ((i)&IN_CLASSC_HOST); +} diff --git a/src/lib/libc/net/inet_makeaddr.c b/src/lib/libc/net/inet_makeaddr.c new file mode 100644 index 0000000000..196a589e4c --- /dev/null +++ b/src/lib/libc/net/inet_makeaddr.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: inet_makeaddr.c,v 1.3 1997/04/05 21:13:12 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +/* + * Formulate an Internet address from network + host. Used in + * building addresses stored in the ifnet structure. + */ +struct in_addr +inet_makeaddr(net, host) + in_addr_t net, host; +{ + in_addr_t addr; + + if (net < 128) + addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); + else if (net < 65536) + addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); + else if (net < 16777216L) + addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); + else + addr = net | host; + addr = htonl(addr); + return (*(struct in_addr *)&addr); +} diff --git a/src/lib/libc/net/inet_net.3 b/src/lib/libc/net/inet_net.3 new file mode 100644 index 0000000000..1a42aff6ea --- /dev/null +++ b/src/lib/libc/net/inet_net.3 @@ -0,0 +1,149 @@ +.\" $OpenBSD: inet_net.3,v 1.1 1997/06/23 03:37:26 millert Exp $ +.\" $NetBSD: inet_net.3,v 1.1 1997/06/18 02:25:27 lukem Exp $ +.\" +.\" Copyright (c) 1997 The NetBSD Foundation, Inc. +.\" All rights reserved. +.\" +.\" This code is derived from software contributed to The NetBSD Foundation +.\" by Luke Mewburn. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the NetBSD +.\" Foundation, Inc. and its contributors. +.\" 4. Neither the name of The NetBSD Foundation nor the names of its +.\" contributors may be used to endorse or promote products derived +.\" from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS +.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.Dd June 18, 1997 +.Dt INET_NET 3 +.Os +.Sh NAME +.Nm inet_net_ntop , +.Nm inet_net_pton +.Nd Internet network number manipulation routines +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Fd #include +.Ft char * +.Fn inet_net_ntop "int af" "const void *src" "int bits" "char *dst" "size_t size" +.Ft int +.Fn inet_net_pton "int af" "const char *src" "void *dst" "size_t size" +.Sh DESCRIPTION +The +.Fn inet_net_ntop +function converts an Internet network number from network format (usually a +.Ft struct in_addr +or some other binary form, in network byte order) to CIDR presentation format +(suitable for external display purposes). +.Fa bits +is the number of bits in +.Fa src +that are the network number. +It returns NULL if a system error occurs (in which case, +.Va errno +will have been set), or it returns a pointer to the destination string. +.Pp +The +.Fn inet_net_pton +function converts a presentation format Internet network number (that is, +printable form as held in a character string) to network format (usually a +.Ft struct in_addr +or some other internal binary representation, in network byte order). +It returns the number of bits (either computed based on the class, or +specified with /CIDR), or -1 if a failure occurred +(in which case +.Va errno +will have been set. +It will be set to +.Er ENOENT +if the Internet network number was not valid). +.Pp +The currently supported value for +.Fa af +is: AF_INET. +.Fa size +is the size of the result buffer +.Fa dst . +.Pp +.Sh NETWORK NUMBERS (IP VERSION 4) +Internet network numbers may be specified in one of the following forms: +.Bd -literal -offset indent +a.b.c.d/bits +a.b.c.d +a.b.c +a.b +a +.Ed +.Pp +When four parts are specified, each is interpreted +as a byte of data and assigned, from left to right, +to the four bytes of an Internet network number. Note +that when an Internet network number is viewed as a 32-bit +integer quantity on a system that uses little-endian +byte order (such as the +.Tn Intel 386, 486 +and +.Tn Pentium +processors) the bytes referred to above appear as +.Dq Li d.c.b.a . +That is, little-endian bytes are ordered from right to left. +.Pp +When a three part number is specified, the last +part is interpreted as a 16-bit quantity and placed +in the right-most two bytes of the Internet network number. +This makes the three part number format convenient +for specifying Class B network numbers as +.Dq Li 128.net.host . +.Pp +When a two part number is supplied, the last part +is interpreted as a 24-bit quantity and placed in +the right most three bytes of the Internet network number. +This makes the two part number format convenient +for specifying Class A network numbers as +.Dq Li net.host . +.Pp +When only one part is given, the value is stored +directly in the Internet network number without any byte +rearrangement. +.Pp +All numbers supplied as +.Dq parts +in a +.Ql \&. +notation +may be decimal, octal, or hexadecimal, as specified +in the C language (i.e., a leading 0x or 0X implies +hexadecimal; otherwise, a leading 0 implies octal; +otherwise, the number is interpreted as decimal). +.Sh SEE ALSO +.Xr byteorder 3 , +.Xr inet 3 , +.Xr networks 5 +.Sh HISTORY +The +.Nm inet_net_ntop +and +.Nm inet_net_pton +functions first appeared in BIND 4.9.4. diff --git a/src/lib/libc/net/inet_net_ntop.c b/src/lib/libc/net/inet_net_ntop.c new file mode 100644 index 0000000000..943ec44550 --- /dev/null +++ b/src/lib/libc/net/inet_net_ntop.c @@ -0,0 +1,139 @@ +/* $OpenBSD: inet_net_ntop.c,v 1.1 1997/03/13 19:07:30 downsj Exp $ */ + +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static const char rcsid[] = "$From: inet_net_ntop.c,v 8.2 1996/08/08 06:54:44 vixie Exp $"; +#else +static const char rcsid[] = "$OpenBSD: inet_net_ntop.c,v 1.1 1997/03/13 19:07:30 downsj Exp $"; +#endif +#endif + +#include +#include +#include +#include + +#include +#include +#include +#include + +static char * inet_net_ntop_ipv4 __P((const u_char *src, int bits, + char *dst, size_t size)); + +/* + * char * + * inet_net_ntop(af, src, bits, dst, size) + * convert network number from network to presentation format. + * generates CIDR style result always. + * return: + * pointer to dst, or NULL if an error occurred (check errno). + * author: + * Paul Vixie (ISC), July 1996 + */ +char * +inet_net_ntop(af, src, bits, dst, size) + int af; + const void *src; + int bits; + char *dst; + size_t size; +{ + switch (af) { + case AF_INET: + return (inet_net_ntop_ipv4(src, bits, dst, size)); + default: + errno = EAFNOSUPPORT; + return (NULL); + } +} + +/* + * static char * + * inet_net_ntop_ipv4(src, bits, dst, size) + * convert IPv4 network number from network to presentation format. + * generates CIDR style result always. + * return: + * pointer to dst, or NULL if an error occurred (check errno). + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0x11110000 in its fourth octet. + * author: + * Paul Vixie (ISC), July 1996 + */ +static char * +inet_net_ntop_ipv4(src, bits, dst, size) + const u_char *src; + int bits; + char *dst; + size_t size; +{ + char *odst = dst; + char *t; + u_int m; + int b; + + if (bits < 0 || bits > 32) { + errno = EINVAL; + return (NULL); + } + if (bits == 0) { + if (size < sizeof "0") + goto emsgsize; + *dst++ = '0'; + *dst = '\0'; + } + + /* Format whole octets. */ + for (b = bits / 8; b > 0; b--) { + if (size < sizeof "255.") + goto emsgsize; + t = dst; + dst += sprintf(dst, "%u", *src++); + if (b > 1) { + *dst++ = '.'; + *dst = '\0'; + } + size -= (size_t)(dst - t); + } + + /* Format partial octet. */ + b = bits % 8; + if (b > 0) { + if (size < sizeof ".255") + goto emsgsize; + t = dst; + if (dst != odst) + *dst++ = '.'; + m = ((1 << b) - 1) << (8 - b); + dst += sprintf(dst, "%u", *src & m); + size -= (size_t)(dst - t); + } + + /* Format CIDR /width. */ + if (size < sizeof "/32") + goto emsgsize; + dst += sprintf(dst, "/%u", bits); + return (odst); + + emsgsize: + errno = EMSGSIZE; + return (NULL); +} diff --git a/src/lib/libc/net/inet_net_pton.c b/src/lib/libc/net/inet_net_pton.c new file mode 100644 index 0000000000..b529e83664 --- /dev/null +++ b/src/lib/libc/net/inet_net_pton.c @@ -0,0 +1,207 @@ +/* $OpenBSD: inet_net_pton.c,v 1.1 1997/03/13 19:07:30 downsj Exp $ */ + +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static const char rcsid[] = "$From: inet_net_pton.c,v 8.3 1996/11/11 06:36:52 vixie Exp $"; +#else +static const char rcsid[] = "$OpenBSD: inet_net_pton.c,v 1.1 1997/03/13 19:07:30 downsj Exp $"; +#endif +#endif + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +static int inet_net_pton_ipv4 __P((const char *src, u_char *dst, + size_t size)); + +/* + * static int + * inet_net_pton(af, src, dst, size) + * convert network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not a valid network specification. + * author: + * Paul Vixie (ISC), June 1996 + */ +int +inet_net_pton(af, src, dst, size) + int af; + const char *src; + void *dst; + size_t size; +{ + switch (af) { + case AF_INET: + return (inet_net_pton_ipv4(src, dst, size)); + default: + errno = EAFNOSUPPORT; + return (-1); + } +} + +/* + * static int + * inet_net_pton_ipv4(src, dst, size) + * convert IPv4 network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not an IPv4 network specification. + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0x11110000 in its fourth octet. + * author: + * Paul Vixie (ISC), June 1996 + */ +static int +inet_net_pton_ipv4(src, dst, size) + const char *src; + u_char *dst; + size_t size; +{ + static const char + xdigits[] = "0123456789abcdef", + digits[] = "0123456789"; + int n, ch, tmp, dirty, bits; + const u_char *odst = dst; + + ch = *src++; + if (ch == '0' && (src[0] == 'x' || src[0] == 'X') + && isascii(src[1]) && isxdigit(src[1])) { + /* Hexadecimal: Eat nybble string. */ + if (size <= 0) + goto emsgsize; + *dst = 0, dirty = 0; + src++; /* skip x or X. */ + while ((ch = *src++) != '\0' && + isascii(ch) && isxdigit(ch)) { + if (isupper(ch)) + ch = tolower(ch); + n = strchr(xdigits, ch) - xdigits; + assert(n >= 0 && n <= 15); + *dst |= n; + if (!dirty++) + *dst <<= 4; + else if (size-- > 0) + *++dst = 0, dirty = 0; + else + goto emsgsize; + } + if (dirty) + size--; + } else if (isascii(ch) && isdigit(ch)) { + /* Decimal: eat dotted digit string. */ + for (;;) { + tmp = 0; + do { + n = strchr(digits, ch) - digits; + assert(n >= 0 && n <= 9); + tmp *= 10; + tmp += n; + if (tmp > 255) + goto enoent; + } while ((ch = *src++) != '\0' && + isascii(ch) && isdigit(ch)); + if (size-- <= 0) + goto emsgsize; + *dst++ = (u_char) tmp; + if (ch == '\0' || ch == '/') + break; + if (ch != '.') + goto enoent; + ch = *src++; + if (!isascii(ch) || !isdigit(ch)) + goto enoent; + } + } else + goto enoent; + + bits = -1; + if (ch == '/' && isascii(src[0]) && isdigit(src[0]) && dst > odst) { + /* CIDR width specifier. Nothing can follow it. */ + ch = *src++; /* Skip over the /. */ + bits = 0; + do { + n = strchr(digits, ch) - digits; + assert(n >= 0 && n <= 9); + bits *= 10; + bits += n; + } while ((ch = *src++) != '\0' && + isascii(ch) && isdigit(ch)); + if (ch != '\0') + goto enoent; + if (bits > 32) + goto emsgsize; + } + + /* Firey death and destruction unless we prefetched EOS. */ + if (ch != '\0') + goto enoent; + + /* If nothing was written to the destination, we found no address. */ + if (dst == odst) + goto enoent; + /* If no CIDR spec was given, infer width from net class. */ + if (bits == -1) { + if (*odst >= 240) /* Class E */ + bits = 32; + else if (*odst >= 224) /* Class D */ + bits = 4; + else if (*odst >= 192) /* Class C */ + bits = 24; + else if (*odst >= 128) /* Class B */ + bits = 16; + else /* Class A */ + bits = 8; + /* If imputed mask is narrower than specified octets, widen. */ + if (bits >= 8 && bits < ((dst - odst) * 8)) + bits = (dst - odst) * 8; + } + /* Extend network to cover the actual mask. */ + while (bits > ((dst - odst) * 8)) { + if (size-- <= 0) + goto emsgsize; + *dst++ = '\0'; + } + return (bits); + + enoent: + errno = ENOENT; + return (-1); + + emsgsize: + errno = EMSGSIZE; + return (-1); +} diff --git a/src/lib/libc/net/inet_neta.c b/src/lib/libc/net/inet_neta.c new file mode 100644 index 0000000000..ffcddd8d91 --- /dev/null +++ b/src/lib/libc/net/inet_neta.c @@ -0,0 +1,83 @@ +/* $OpenBSD: inet_neta.c,v 1.2 1997/04/05 21:13:12 millert Exp $ */ + +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static const char rcsid[] = "$Id: inet_neta.c,v 1.2 1997/04/05 21:13:12 millert Exp $"; +#else +static const char rcsid[] = "$OpenBSD: inet_neta.c,v 1.2 1997/04/05 21:13:12 millert Exp $"; +#endif +#endif + +#include +#include +#include +#include + +#include +#include +#include + +/* + * char * + * inet_neta(src, dst, size) + * format an in_addr_t network number into presentation format. + * return: + * pointer to dst, or NULL if an error occurred (check errno). + * note: + * format of ``src'' is as for inet_network(). + * author: + * Paul Vixie (ISC), July 1996 + */ +char * +inet_neta(src, dst, size) + in_addr_t src; + char *dst; + size_t size; +{ + char *odst = dst; + char *tp; + + while (src & 0xffffffff) { + u_char b = (src & 0xff000000) >> 24; + + src <<= 8; + if (b) { + if (size < sizeof "255.") + goto emsgsize; + tp = dst; + dst += sprintf(dst, "%u", b); + if (src != 0L) { + *dst++ = '.'; + *dst = '\0'; + } + size -= (size_t)(dst - tp); + } + } + if (dst == odst) { + if (size < sizeof "0.0.0.0") + goto emsgsize; + strcpy(dst, "0.0.0.0"); + } + return (odst); + + emsgsize: + errno = EMSGSIZE; + return (NULL); +} diff --git a/src/lib/libc/net/inet_netof.c b/src/lib/libc/net/inet_netof.c new file mode 100644 index 0000000000..f3b9c01697 --- /dev/null +++ b/src/lib/libc/net/inet_netof.c @@ -0,0 +1,58 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: inet_netof.c,v 1.3 1997/04/05 21:13:13 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +/* + * Return the network number from an internet + * address; handles class a/b/c network #'s. + */ +in_addr_t +inet_netof(in) + struct in_addr in; +{ + register in_addr_t i = ntohl(in.s_addr); + + if (IN_CLASSA(i)) + return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT); + else if (IN_CLASSB(i)) + return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT); + else + return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT); +} diff --git a/src/lib/libc/net/inet_network.c b/src/lib/libc/net/inet_network.c new file mode 100644 index 0000000000..8a9a555d62 --- /dev/null +++ b/src/lib/libc/net/inet_network.c @@ -0,0 +1,92 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: inet_network.c,v 1.7 1997/07/09 01:08:37 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include + +/* + * Internet network address interpretation routine. + * The library routines call this routine to interpret + * network numbers. + */ +in_addr_t +inet_network(cp) + register const char *cp; +{ + register in_addr_t val, base, n; + register char c; + in_addr_t parts[4], *pp = parts; + register int i; + +again: + val = 0; base = 10; + if (*cp == '0') + base = 8, cp++; + if (*cp == 'x' || *cp == 'X') + base = 16, cp++; + while ((c = *cp)) { + if (isdigit(c)) { + val = (val * base) + (c - '0'); + cp++; + continue; + } + if (base == 16 && isxdigit(c)) { + val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A')); + cp++; + continue; + } + break; + } + if (*cp == '.') { + if (pp >= parts + 3) + return (INADDR_NONE); + *pp++ = val, cp++; + goto again; + } + if (*cp && !isspace(*cp)) + return (INADDR_NONE); + *pp++ = val; + n = pp - parts; + for (val = 0, i = 0; i < 4; i++) { + val <<= 8; + if (i < n) + val |= parts[i] & 0xff; + } + return (val); +} diff --git a/src/lib/libc/net/inet_ntoa.c b/src/lib/libc/net/inet_ntoa.c new file mode 100644 index 0000000000..148732ba5a --- /dev/null +++ b/src/lib/libc/net/inet_ntoa.c @@ -0,0 +1,59 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: inet_ntoa.c,v 1.2 1996/08/19 08:29:16 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +/* + * Convert network-format internet address + * to base 256 d.d.d.d representation. + */ +#include +#include +#include +#include + +char * +inet_ntoa(in) + struct in_addr in; +{ + static char b[18]; + register char *p; + + p = (char *)∈ +#define UC(b) (((int)b)&0xff) + (void)snprintf(b, sizeof(b), + "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3])); + return (b); +} diff --git a/src/lib/libc/net/inet_ntop.c b/src/lib/libc/net/inet_ntop.c new file mode 100644 index 0000000000..64d0d13768 --- /dev/null +++ b/src/lib/libc/net/inet_ntop.c @@ -0,0 +1,194 @@ +/* $OpenBSD: inet_ntop.c,v 1.1 1997/03/13 19:07:32 downsj Exp $ */ + +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char rcsid[] = "$From: inet_ntop.c,v 8.7 1996/08/05 08:41:18 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: inet_ntop.c,v 1.1 1997/03/13 19:07:32 downsj Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * WARNING: Don't even consider trying to compile this on a system where + * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. + */ + +static const char *inet_ntop4 __P((const u_char *src, char *dst, size_t size)); +static const char *inet_ntop6 __P((const u_char *src, char *dst, size_t size)); + +/* char * + * inet_ntop(af, src, dst, size) + * convert a network format address to presentation format. + * return: + * pointer to presentation format address (`dst'), or NULL (see errno). + * author: + * Paul Vixie, 1996. + */ +const char * +inet_ntop(af, src, dst, size) + int af; + const void *src; + char *dst; + size_t size; +{ + switch (af) { + case AF_INET: + return (inet_ntop4(src, dst, size)); + case AF_INET6: + return (inet_ntop6(src, dst, size)); + default: + errno = EAFNOSUPPORT; + return (NULL); + } + /* NOTREACHED */ +} + +/* const char * + * inet_ntop4(src, dst, size) + * format an IPv4 address, more or less like inet_ntoa() + * return: + * `dst' (as a const) + * notes: + * (1) uses no statics + * (2) takes a u_char* not an in_addr as input + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop4(src, dst, size) + const u_char *src; + char *dst; + size_t size; +{ + static const char fmt[] = "%u.%u.%u.%u"; + char tmp[sizeof "255.255.255.255"]; + + if (sprintf(tmp, fmt, src[0], src[1], src[2], src[3]) > size) { + errno = ENOSPC; + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} + +/* const char * + * inet_ntop6(src, dst, size) + * convert IPv6 binary address into presentation (printable) format + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop6(src, dst, size) + const u_char *src; + char *dst; + size_t size; +{ + /* + * Note that int32_t and int16_t need only be "at least" large enough + * to contain a value of the specified size. On some systems, like + * Crays, there is no such thing as an integer variable with 16 bits. + * Keep this in mind if you think this function should have been coded + * to use pointer overlays. All the world's not a VAX. + */ + char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp; + struct { int base, len; } best, cur; + u_int words[IN6ADDRSZ / INT16SZ]; + int i; + + /* + * Preprocess: + * Copy the input (bytewise) array into a wordwise array. + * Find the longest run of 0x00's in src[] for :: shorthanding. + */ + memset(words, '\0', sizeof words); + for (i = 0; i < IN6ADDRSZ; i++) + words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3)); + best.base = -1; + cur.base = -1; + for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) { + if (words[i] == 0) { + if (cur.base == -1) + cur.base = i, cur.len = 1; + else + cur.len++; + } else { + if (cur.base != -1) { + if (best.base == -1 || cur.len > best.len) + best = cur; + cur.base = -1; + } + } + } + if (cur.base != -1) { + if (best.base == -1 || cur.len > best.len) + best = cur; + } + if (best.base != -1 && best.len < 2) + best.base = -1; + + /* + * Format the result. + */ + tp = tmp; + for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) { + /* Are we inside the best run of 0x00's? */ + if (best.base != -1 && i >= best.base && + i < (best.base + best.len)) { + if (i == best.base) + *tp++ = ':'; + continue; + } + /* Are we following an initial run of 0x00s or any real hex? */ + if (i != 0) + *tp++ = ':'; + /* Is this address an encapsulated IPv4? */ + if (i == 6 && best.base == 0 && + (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) { + if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp))) + return (NULL); + tp += strlen(tp); + break; + } + tp += sprintf(tp, "%x", words[i]); + } + /* Was it a trailing run of 0x00's? */ + if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) + *tp++ = ':'; + *tp++ = '\0'; + + /* + * Check for overflow, copy, and we're done. + */ + if ((size_t)(tp - tmp) > size) { + errno = ENOSPC; + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} diff --git a/src/lib/libc/net/inet_pton.c b/src/lib/libc/net/inet_pton.c new file mode 100644 index 0000000000..46b4b24819 --- /dev/null +++ b/src/lib/libc/net/inet_pton.c @@ -0,0 +1,220 @@ +/* $OpenBSD: inet_pton.c,v 1.2 1997/04/13 05:08:24 deraadt Exp $ */ + +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char rcsid[] = "$From: inet_pton.c,v 8.7 1996/08/05 08:31:35 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: inet_pton.c,v 1.2 1997/04/13 05:08:24 deraadt Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * WARNING: Don't even consider trying to compile this on a system where + * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. + */ + +static int inet_pton4 __P((const char *src, u_char *dst)); +static int inet_pton6 __P((const char *src, u_char *dst)); + +/* int + * inet_pton(af, src, dst) + * convert from presentation format (which usually means ASCII printable) + * to network format (which is usually some kind of binary format). + * return: + * 1 if the address was valid for the specified address family + * 0 if the address wasn't valid (`dst' is untouched in this case) + * -1 if some other error occurred (`dst' is untouched in this case, too) + * author: + * Paul Vixie, 1996. + */ +int +inet_pton(af, src, dst) + int af; + const char *src; + void *dst; +{ + switch (af) { + case AF_INET: + return (inet_pton4(src, dst)); + case AF_INET6: + return (inet_pton6(src, dst)); + default: + errno = EAFNOSUPPORT; + return (-1); + } + /* NOTREACHED */ +} + +/* int + * inet_pton4(src, dst) + * like inet_aton() but without all the hexadecimal and shorthand. + * return: + * 1 if `src' is a valid dotted quad, else 0. + * notice: + * does not touch `dst' unless it's returning 1. + * author: + * Paul Vixie, 1996. + */ +static int +inet_pton4(src, dst) + const char *src; + u_char *dst; +{ + static const char digits[] = "0123456789"; + int saw_digit, octets, ch; + u_char tmp[INADDRSZ], *tp; + + saw_digit = 0; + octets = 0; + *(tp = tmp) = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + if ((pch = strchr(digits, ch)) != NULL) { + u_int new = *tp * 10 + (pch - digits); + + if (new > 255) + return (0); + if (! saw_digit) { + if (++octets > 4) + return (0); + saw_digit = 1; + } + *tp = new; + } else if (ch == '.' && saw_digit) { + if (octets == 4) + return (0); + *++tp = 0; + saw_digit = 0; + } else + return (0); + } + if (octets < 4) + return (0); + + memcpy(dst, tmp, INADDRSZ); + return (1); +} + +/* int + * inet_pton6(src, dst) + * convert presentation level address to network order binary form. + * return: + * 1 if `src' is a valid [RFC1884 2.2] address, else 0. + * notice: + * (1) does not touch `dst' unless it's returning 1. + * (2) :: in a full address is silently ignored. + * credit: + * inspired by Mark Andrews. + * author: + * Paul Vixie, 1996. + */ +static int +inet_pton6(src, dst) + const char *src; + u_char *dst; +{ + static const char xdigits_l[] = "0123456789abcdef", + xdigits_u[] = "0123456789ABCDEF"; + u_char tmp[IN6ADDRSZ], *tp, *endp, *colonp; + const char *xdigits, *curtok; + int ch, saw_xdigit; + u_int val; + + memset((tp = tmp), '\0', IN6ADDRSZ); + endp = tp + IN6ADDRSZ; + colonp = NULL; + /* Leading :: requires some special handling. */ + if (*src == ':') + if (*++src != ':') + return (0); + curtok = src; + saw_xdigit = 0; + val = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) + pch = strchr((xdigits = xdigits_u), ch); + if (pch != NULL) { + val <<= 4; + val |= (pch - xdigits); + if (val > 0xffff) + return (0); + saw_xdigit = 1; + continue; + } + if (ch == ':') { + curtok = src; + if (!saw_xdigit) { + if (colonp) + return (0); + colonp = tp; + continue; + } + if (tp + INT16SZ > endp) + return (0); + *tp++ = (u_char) (val >> 8) & 0xff; + *tp++ = (u_char) val & 0xff; + saw_xdigit = 0; + val = 0; + continue; + } + if (ch == '.' && ((tp + INADDRSZ) <= endp) && + inet_pton4(curtok, tp) > 0) { + tp += INADDRSZ; + saw_xdigit = 0; + break; /* '\0' was seen by inet_pton4(). */ + } + return (0); + } + if (saw_xdigit) { + if (tp + INT16SZ > endp) + return (0); + *tp++ = (u_char) (val >> 8) & 0xff; + *tp++ = (u_char) val & 0xff; + } + if (colonp != NULL) { + /* + * Since some memmove()'s erroneously fail to handle + * overlapping regions, we'll do the shift by hand. + */ + const int n = tp - colonp; + int i; + + for (i = 1; i <= n; i++) { + endp[- i] = colonp[n - i]; + colonp[n - i] = 0; + } + tp = endp; + } + if (tp != endp) + return (0); + memcpy(dst, tmp, IN6ADDRSZ); + return (1); +} diff --git a/src/lib/libc/net/ipx.3 b/src/lib/libc/net/ipx.3 new file mode 100644 index 0000000000..073be74807 --- /dev/null +++ b/src/lib/libc/net/ipx.3 @@ -0,0 +1,126 @@ +.\" $OpenBSD: ipx.3,v 1.3 1997/09/09 11:45:17 kstailey Exp $ +.\" +.\" Copyright (c) 1986, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd June 4, 1993 +.Dt IPX 3 +.Os OpenBSD 1.2 +.Sh NAME +.Nm ipx_addr , +.Nm ipx_ntoa +.Nd IPX address conversion routines +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Ft struct ipx_addr +.Fn ipx_addr "char *cp" +.Ft char * +.Fn ipx_ntoa "struct ipx_addr ipx" +.Sh DESCRIPTION +The routine +.Fn ipx_addr +interprets character strings representing +.Tn IPX +addresses, returning binary information suitable +for use in system calls. +The routine +.Fn ipx_ntoa +takes +.Tn IPX +addresses and returns +.Tn ASCII +strings representing the address in a +notation in common use: +.Bd -filled -offset indent +.. +.Ed +.Pp +Trailing zero fields are suppressed, and each number is printed in hexadecimal, +in a format suitable for input to +.Fn ipx_addr . +Any fields lacking super-decimal digits will have a +trailing +.Ql H +appended. +.Pp +An effort has been made to insure that +.Fn ipx_addr +be compatible with most formats in common use. +It will first separate an address into 1 to 3 fields using a single delimiter +chosen from +period +.Ql \&. , +colon +.Ql \&: +or pound-sign +.Ql \&# . +Each field is then examined for byte separators (colon or period). +If there are byte separators, each subfield separated is taken to be +a small hexadecimal number, and the entirety is taken as a network-byte-ordered +quantity to be zero extended in the high-network-order bytes. +Next, the field is inspected for hyphens, in which case +the field is assumed to be a number in decimal notation +with hyphens separating the millenia. +Next, the field is assumed to be a number: +It is interpreted +as hexadecimal if there is a leading +.Ql 0x +(as in C), +a trailing +.Ql H +(as in Mesa), or there are any super-decimal digits present. +It is interpreted as octal is there is a leading +.Ql 0 +and there are no super-octal digits. +Otherwise, it is converted as a decimal number. +.Sh RETURN VALUES +None. (See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr ns 4 , +.Xr hosts 5 , +.Xr networks 5 +.Sh HISTORY +The precursor +.Fn ns_addr +and +.Fn ns_ntoa +functions appeared in +.Bx 4.3 . +.Sh BUGS +The string returned by +.Fn ipx_ntoa +resides in a static memory area. +The function +.Fn ipx_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. diff --git a/src/lib/libc/net/ipx_addr.c b/src/lib/libc/net/ipx_addr.c new file mode 100644 index 0000000000..a76e03e913 --- /dev/null +++ b/src/lib/libc/net/ipx_addr.c @@ -0,0 +1,229 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * J.Q. Johnson. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from @(#)ipx_addr.c + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: ipx_addr.c,v 1.3 1997/07/09 01:08:39 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include + +static struct ipx_addr addr, zero_addr; + +static void Field(), cvtbase(); + +struct ipx_addr +ipx_addr(name) + const char *name; +{ + char separator; + char *hostname, *socketname, *cp; + char buf[50]; + + (void)strncpy(buf, name, sizeof(buf) - 1); + buf[sizeof(buf) - 1] = '\0'; + + /* + * First, figure out what he intends as a field separtor. + * Despite the way this routine is written, the prefered + * form 2-272.AA001234H.01777, i.e. XDE standard. + * Great efforts are made to insure backward compatability. + */ + if ((hostname = strchr(buf, '#'))) + separator = '#'; + else { + hostname = strchr(buf, '.'); + if ((cp = strchr(buf, ':')) && + ((hostname && cp < hostname) || (hostname == 0))) { + hostname = cp; + separator = ':'; + } else + separator = '.'; + } + if (hostname) + *hostname++ = 0; + + addr = zero_addr; + Field(buf, addr.ipx_net.c_net, 4); + if (hostname == 0) + return (addr); /* No separator means net only */ + + socketname = strchr(hostname, separator); + if (socketname) { + *socketname++ = 0; + Field(socketname, (u_char *)&addr.ipx_port, 2); + } + + Field(hostname, addr.ipx_host.c_host, 6); + + return (addr); +} + +static void +Field(buf, out, len) + char *buf; + u_char *out; + int len; +{ + register char *bp = buf; + int i, ibase, base16 = 0, base10 = 0, clen = 0; + int hb[6], *hp; + char *fmt; + + /* + * first try 2-273#2-852-151-014#socket + */ + if ((*buf != '-') && + (1 < (i = sscanf(buf, "%d-%d-%d-%d-%d", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) { + cvtbase(1000L, 256, hb, i, out, len); + return; + } + /* + * try form 8E1#0.0.AA.0.5E.E6#socket + */ + if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { + cvtbase(256L, 256, hb, i, out, len); + return; + } + /* + * try form 8E1#0:0:AA:0:5E:E6#socket + */ + if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { + cvtbase(256L, 256, hb, i, out, len); + return; + } + /* + * This is REALLY stretching it but there was a + * comma notation separting shorts -- definitely non standard + */ + if (1 < (i = sscanf(buf,"%x,%x,%x", + &hb[0], &hb[1], &hb[2]))) { + hb[0] = htons(hb[0]); hb[1] = htons(hb[1]); + hb[2] = htons(hb[2]); + cvtbase(65536L, 256, hb, i, out, len); + return; + } + + /* Need to decide if base 10, 16 or 8 */ + while (*bp) switch (*bp++) { + + case '0': case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '-': + break; + + case '8': case '9': + base10 = 1; + break; + + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + base16 = 1; + break; + + case 'x': case 'X': + *--bp = '0'; + base16 = 1; + break; + + case 'h': case 'H': + base16 = 1; + /* fall into */ + + default: + *--bp = 0; /* Ends Loop */ + } + if (base16) { + fmt = "%3x"; + ibase = 4096; + } else if (base10 == 0 && *buf == '0') { + fmt = "%3o"; + ibase = 512; + } else { + fmt = "%3d"; + ibase = 1000; + } + + for (bp = buf; *bp++; ) clen++; + if (clen == 0) clen++; + if (clen > 18) clen = 18; + i = ((clen - 1) / 3) + 1; + bp = clen + buf - 3; + hp = hb + i - 1; + + while (hp > hb) { + (void)sscanf(bp, fmt, hp); + bp[0] = 0; + hp--; + bp -= 3; + } + (void)sscanf(buf, fmt, hp); + cvtbase((long)ibase, 256, hb, i, out, len); +} + +static void +cvtbase(oldbase,newbase,input,inlen,result,reslen) + long oldbase; + int newbase; + int input[]; + int inlen; + unsigned char result[]; + int reslen; +{ + int d, e; + long sum; + + e = 1; + while (e > 0 && reslen > 0) { + d = 0; e = 0; sum = 0; + /* long division: input=input/newbase */ + while (d < inlen) { + sum = sum*oldbase + (long) input[d]; + e += (sum > 0); + input[d++] = sum / newbase; + sum %= newbase; + } + result[--reslen] = sum; /* accumulate remainder */ + } + for (d=0; d < reslen; d++) + result[d] = 0; +} diff --git a/src/lib/libc/net/ipx_ntoa.c b/src/lib/libc/net/ipx_ntoa.c new file mode 100644 index 0000000000..1dcfe7181b --- /dev/null +++ b/src/lib/libc/net/ipx_ntoa.c @@ -0,0 +1,58 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: ipx_ntoa.c,v 1.2 1996/08/19 08:29:20 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +char * +ipx_ntoa(addr) + struct ipx_addr addr; +{ + static char obuf[] = "xxxx.xx:xx:xx:xx:xx:xx.uuuuu"; + + sprintf(obuf, "%8xH.%02x:%02x:%02x:%02x:%02x:%02x.%u", + ntohl(addr.ipx_net.l_net), + addr.ipx_host.c_host[0], + addr.ipx_host.c_host[1], + addr.ipx_host.c_host[2], + addr.ipx_host.c_host[3], + addr.ipx_host.c_host[4], + addr.ipx_host.c_host[5], + ntohs(addr.ipx_port)); + return (obuf); +} diff --git a/src/lib/libc/net/iso_addr.3 b/src/lib/libc/net/iso_addr.3 new file mode 100644 index 0000000000..d9bf9086be --- /dev/null +++ b/src/lib/libc/net/iso_addr.3 @@ -0,0 +1,110 @@ +.\" $OpenBSD: iso_addr.3,v 1.2 1996/08/19 08:29:22 tholo Exp $ +.\" +.\" Copyright (c) 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd June 4, 1993 +.Dt ISO_ADDR 3 +.Os +.Sh NAME +.Nm iso_addr , +.Nm iso_ntoa +.Nd "elementary network address conversion routines for Open System Interconnection +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Ft struct iso_addr * +.Fn iso_addr "char *cp" +.Ft char * +.Fn iso_ntoa "struct iso_addr *isoa" +.Sh DESCRIPTION +The routine +.Fn iso_addr +interprets character strings representing +.Tn OSI +addresses, returning binary information suitable +for use in system calls. +The routine +.Fn iso_ntoa +takes +.Tn OSI +addresses and returns +.Tn ASCII +strings representing NSAPs (network service +access points) in a +notation inverse to that accepted by +.Fn iso_addr . +.Pp +Unfortunately, no universal standard exists for representing +.Tn OSI +network addresses. +.Pp +The format employed by +.Fn iso_addr +is a sequence of hexadecimal +.Dq digits +(optionally separated by periods), +of the form: +.Bd -filled -offset indent +.. +.Ed +.Pp +Each pair of hexadecimal digits represents a byte +with the leading digit indicating the higher-ordered bits. +A period following an even number of bytes has no +effect (but may be used to increase legibility). +A period following an odd number of bytes has the +effect of causing the byte of address being translated +to have its higher order bits filled with zeros. +.Sh RETURN VALUES +.Fn iso_ntoa +always returns a null terminated string. +.Fn iso_addr +always returns a pointer to a struct iso_addr. +(See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr iso 4 +.Sh HISTORY +The +.Fn iso_addr +and +.Fn iso_ntoa +functions appeared in +.Bx 4.3 Reno . +.Sh BUGS +The returned values +reside in a static memory area. +.Pp +The function +.Fn iso_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. diff --git a/src/lib/libc/net/iso_addr.c b/src/lib/libc/net/iso_addr.c new file mode 100644 index 0000000000..01561e395b --- /dev/null +++ b/src/lib/libc/net/iso_addr.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: iso_addr.c,v 1.2 1996/08/19 08:29:23 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +/* States*/ +#define VIRGIN 0 +#define GOTONE 1 +#define GOTTWO 2 +/* Inputs */ +#define DIGIT (4*0) +#define END (4*1) +#define DELIM (4*2) + +struct iso_addr * +iso_addr(addr) + register const char *addr; +{ + static struct iso_addr out_addr; + register char *cp = out_addr.isoa_genaddr; + char *cplim = cp + sizeof(out_addr.isoa_genaddr); + register int byte = 0, state = VIRGIN, new; + + bzero((char *)&out_addr, sizeof(out_addr)); + do { + if ((*addr >= '0') && (*addr <= '9')) { + new = *addr - '0'; + } else if ((*addr >= 'a') && (*addr <= 'f')) { + new = *addr - 'a' + 10; + } else if ((*addr >= 'A') && (*addr <= 'F')) { + new = *addr - 'A' + 10; + } else if (*addr == 0) + state |= END; + else + state |= DELIM; + addr++; + switch (state /* | INPUT */) { + case GOTTWO | DIGIT: + *cp++ = byte; /*FALLTHROUGH*/ + case VIRGIN | DIGIT: + state = GOTONE; byte = new; continue; + case GOTONE | DIGIT: + state = GOTTWO; byte = new + (byte << 4); continue; + default: /* | DELIM */ + state = VIRGIN; *cp++ = byte; byte = 0; continue; + case GOTONE | END: + case GOTTWO | END: + *cp++ = byte; /* FALLTHROUGH */ + case VIRGIN | END: + break; + } + break; + } while (cp < cplim); + out_addr.isoa_len = cp - out_addr.isoa_genaddr; + return (&out_addr); +} +static char hexlist[] = "0123456789abcdef"; + +char * +iso_ntoa(isoa) + const struct iso_addr *isoa; +{ + static char obuf[64]; + register char *out = obuf; + register int i; + register u_char *in = (u_char *)isoa->isoa_genaddr; + u_char *inlim = in + isoa->isoa_len; + + out[1] = 0; + while (in < inlim) { + i = *in++; + *out++ = '.'; + if (i > 0xf) { + out[1] = hexlist[i & 0xf]; + i >>= 4; + out[0] = hexlist[i]; + out += 2; + } else + *out++ = hexlist[i]; + } + *out = 0; + return(obuf + 1); +} diff --git a/src/lib/libc/net/link_addr.3 b/src/lib/libc/net/link_addr.3 new file mode 100644 index 0000000000..eb6c952177 --- /dev/null +++ b/src/lib/libc/net/link_addr.3 @@ -0,0 +1,131 @@ +.\" $OpenBSD: link_addr.3,v 1.2 1996/08/19 08:29:25 tholo Exp $ +.\" +.\" Copyright (c) 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Donn Seeley at BSDI. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd July 28, 1993 +.Dt LINK_ADDR 3 +.Os BSD 4.4 +.Sh NAME +.Nm link_addr , +.Nm link_ntoa +.Nd elementary address specification routines for link level access +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Fd #include +.Ft void +.Fn link_addr "const char *addr" "struct sockaddr_dl *sdl" +.Ft char * +.Fn link_ntoa "const struct sockaddr_dl *sdl" +.Sh DESCRIPTION +The routine +.Fn link_addr +interprets character strings representing +link-level addresses, returning binary information suitable +for use in system calls. +The routine +.Fn link_ntoa +takes +a link-level +address and returns an +.Tn ASCII +string representing some of the information present, +including the link level address itself, and the interface name +or number, if present. +This facility is experimental and is +still subject to change. +.Pp +For +.Fn link_addr , +the string +.Fa addr +may contain +an optional network interface identifier of the form +.Dq "name unit-number" , +suitable for the first argument to +.Xr ifconfig 4 , +followed in all cases by a colon and +an interface address in the form of +groups of hexadecimal digits +separated by periods. +Each group represents a byte of address; +address bytes are filled left to right from +low order bytes through high order bytes. +.Pp +.\" A regular expression may make this format clearer: +.\" .Bd -literal -offset indent +.\" ([a-z]+[0-9]+:)?[0-9a-f]+(\e.[0-9a-f]+)* +.\" .Ed +.\" .Pp +Thus +.Li le0:8.0.9.13.d.30 +represents an ethernet address +to be transmitted on the first Lance ethernet interface. +.Sh RETURN VALUES +.Fn link_ntoa +always returns a null terminated string. +.Fn link_addr +has no return value. +(See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr iso 4 , +.Sh HISTORY +The +.Fn link_addr +and +.Fn link_ntoa +functions appeared in +.Bx 4.3 Reno . +.Sh BUGS +The returned values for link_ntoa +reside in a static memory area. +.Pp +The function +.Fn link_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. +.Pp +If the +.Va sdl_len +field of the link socket address +.Fa sdl +is 0, +.Fn link_ntoa +will not insert a colon before the interface address bytes. +If this translated address is given to +.Fn link_addr +without inserting an initial colon, +the latter will not interpret it correctly. diff --git a/src/lib/libc/net/linkaddr.c b/src/lib/libc/net/linkaddr.c new file mode 100644 index 0000000000..fb522f3233 --- /dev/null +++ b/src/lib/libc/net/linkaddr.c @@ -0,0 +1,158 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: linkaddr.c,v 1.2 1996/08/19 08:29:27 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include + +/* States*/ +#define NAMING 0 +#define GOTONE 1 +#define GOTTWO 2 +#define RESET 3 +/* Inputs */ +#define DIGIT (4*0) +#define END (4*1) +#define DELIM (4*2) +#define LETTER (4*3) + +void +link_addr(addr, sdl) + register const char *addr; + register struct sockaddr_dl *sdl; +{ + register char *cp = sdl->sdl_data; + char *cplim = sdl->sdl_len + (char *)sdl; + register int byte = 0, state = NAMING, new; + + bzero((char *)&sdl->sdl_family, sdl->sdl_len - 1); + sdl->sdl_family = AF_LINK; + do { + state &= ~LETTER; + if ((*addr >= '0') && (*addr <= '9')) { + new = *addr - '0'; + } else if ((*addr >= 'a') && (*addr <= 'f')) { + new = *addr - 'a' + 10; + } else if ((*addr >= 'A') && (*addr <= 'F')) { + new = *addr - 'A' + 10; + } else if (*addr == 0) { + state |= END; + } else if (state == NAMING && + (((*addr >= 'A') && (*addr <= 'Z')) || + ((*addr >= 'a') && (*addr <= 'z')))) + state |= LETTER; + else + state |= DELIM; + addr++; + switch (state /* | INPUT */) { + case NAMING | DIGIT: + case NAMING | LETTER: + *cp++ = addr[-1]; + continue; + case NAMING | DELIM: + state = RESET; + sdl->sdl_nlen = cp - sdl->sdl_data; + continue; + case GOTTWO | DIGIT: + *cp++ = byte; + /* FALLTHROUGH */ + case RESET | DIGIT: + state = GOTONE; + byte = new; + continue; + case GOTONE | DIGIT: + state = GOTTWO; + byte = new + (byte << 4); + continue; + default: /* | DELIM */ + state = RESET; + *cp++ = byte; + byte = 0; + continue; + case GOTONE | END: + case GOTTWO | END: + *cp++ = byte; + /* FALLTHROUGH */ + case RESET | END: + break; + } + break; + } while (cp < cplim); + sdl->sdl_alen = cp - LLADDR(sdl); + new = cp - (char *)sdl; + if (new > sizeof(*sdl)) + sdl->sdl_len = new; + return; +} + +static char hexlist[] = "0123456789abcdef"; + +char * +link_ntoa(sdl) + register const struct sockaddr_dl *sdl; +{ + static char obuf[64]; + register char *out = obuf; + register int i; + register u_char *in = (u_char *)LLADDR(sdl); + u_char *inlim = in + sdl->sdl_alen; + int firsttime = 1; + + if (sdl->sdl_nlen) { + bcopy(sdl->sdl_data, obuf, sdl->sdl_nlen); + out += sdl->sdl_nlen; + if (sdl->sdl_alen) + *out++ = ':'; + } + while (in < inlim) { + if (firsttime) + firsttime = 0; + else + *out++ = '.'; + i = *in++; + if (i > 0xf) { + out[1] = hexlist[i & 0xf]; + i >>= 4; + out[0] = hexlist[i]; + out += 2; + } else + *out++ = hexlist[i]; + } + *out = 0; + return (obuf); +} diff --git a/src/lib/libc/net/ns.3 b/src/lib/libc/net/ns.3 new file mode 100644 index 0000000000..6e096d9f4b --- /dev/null +++ b/src/lib/libc/net/ns.3 @@ -0,0 +1,130 @@ +.\" $OpenBSD: ns.3,v 1.2 1996/08/19 08:29:29 tholo Exp $ +.\" +.\" Copyright (c) 1986, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd June 4, 1993 +.Dt NS 3 +.Os BSD 4.3 +.Sh NAME +.Nm ns_addr , +.Nm ns_ntoa +.Nd Xerox +.Tn NS Ns (tm) +address conversion routines +.Sh SYNOPSIS +.Fd #include +.Fd #include +.Ft struct ns_addr +.Fn ns_addr "char *cp" +.Ft char * +.Fn ns_ntoa "struct ns_addr ns" +.Sh DESCRIPTION +The routine +.Fn ns_addr +interprets character strings representing +.Tn XNS +addresses, returning binary information suitable +for use in system calls. +The routine +.Fn ns_ntoa +takes +.Tn XNS +addresses and returns +.Tn ASCII +strings representing the address in a +notation in common use in the Xerox Development Environment: +.Bd -filled -offset indent +.. +.Ed +.Pp +Trailing zero fields are suppressed, and each number is printed in hexadecimal, +in a format suitable for input to +.Fn ns_addr . +Any fields lacking super-decimal digits will have a +trailing +.Ql H +appended. +.Pp +Unfortunately, no universal standard exists for representing +.Tn XNS +addresses. +An effort has been made to insure that +.Fn ns_addr +be compatible with most formats in common use. +It will first separate an address into 1 to 3 fields using a single delimiter +chosen from +period +.Ql \&. , +colon +.Ql \&: +or pound-sign +.Ql \&# . +Each field is then examined for byte separators (colon or period). +If there are byte separators, each subfield separated is taken to be +a small hexadecimal number, and the entirety is taken as a network-byte-ordered +quantity to be zero extended in the high-network-order bytes. +Next, the field is inspected for hyphens, in which case +the field is assumed to be a number in decimal notation +with hyphens separating the millenia. +Next, the field is assumed to be a number: +It is interpreted +as hexadecimal if there is a leading +.Ql 0x +(as in C), +a trailing +.Ql H +(as in Mesa), or there are any super-decimal digits present. +It is interpreted as octal is there is a leading +.Ql 0 +and there are no super-octal digits. +Otherwise, it is converted as a decimal number. +.Sh RETURN VALUES +None. (See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr hosts 5 , +.Xr networks 5 , +.Sh HISTORY +The +.Fn ns_addr +and +.Fn ns_toa +functions appeared in +.Bx 4.3 . +.Sh BUGS +The string returned by +.Fn ns_ntoa +resides in a static memory area. +The function +.Fn ns_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. diff --git a/src/lib/libc/net/ns_addr.c b/src/lib/libc/net/ns_addr.c new file mode 100644 index 0000000000..8f2e4bc513 --- /dev/null +++ b/src/lib/libc/net/ns_addr.c @@ -0,0 +1,228 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * J.Q. Johnson. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: ns_addr.c,v 1.4 1997/07/21 20:31:05 deraadt Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include + +static struct ns_addr addr, zero_addr; + +static void Field __P((char *, u_int8_t *, int)); +static void cvtbase __P((long, int, int[], int, u_int8_t[], int)); + +struct ns_addr +ns_addr(name) + const char *name; +{ + char separator; + char *hostname, *socketname, *cp; + char buf[50]; + + (void)strncpy(buf, name, sizeof(buf) - 1); + buf[sizeof(buf) - 1] = '\0'; + + /* + * First, figure out what he intends as a field separtor. + * Despite the way this routine is written, the prefered + * form 2-272.AA001234H.01777, i.e. XDE standard. + * Great efforts are made to insure backward compatability. + */ + if ((hostname = strchr(buf, '#'))) + separator = '#'; + else { + hostname = strchr(buf, '.'); + if ((cp = strchr(buf, ':')) && + ((hostname && cp < hostname) || (hostname == 0))) { + hostname = cp; + separator = ':'; + } else + separator = '.'; + } + if (hostname) + *hostname++ = 0; + + addr = zero_addr; + Field(buf, addr.x_net.c_net, 4); + if (hostname == 0) + return (addr); /* No separator means net only */ + + socketname = strchr(hostname, separator); + if (socketname) { + *socketname++ = 0; + Field(socketname, (u_char *)&addr.x_port, 2); + } + + Field(hostname, (u_char *)addr.x_host.c_host, 6); + + return (addr); +} + +static void +Field(buf, out, len) + char *buf; + u_char *out; + int len; +{ + register char *bp = buf; + int i, ibase, base16 = 0, base10 = 0, clen = 0; + int hb[6], *hp; + char *fmt; + + /* + * first try 2-273#2-852-151-014#socket + */ + if ((*buf != '-') && + (1 < (i = sscanf(buf, "%d-%d-%d-%d-%d", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) { + cvtbase(1000L, 256, hb, i, out, len); + return; + } + /* + * try form 8E1#0.0.AA.0.5E.E6#socket + */ + if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { + cvtbase(256L, 256, hb, i, out, len); + return; + } + /* + * try form 8E1#0:0:AA:0:5E:E6#socket + */ + if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { + cvtbase(256L, 256, hb, i, out, len); + return; + } + /* + * This is REALLY stretching it but there was a + * comma notation separting shorts -- definitely non standard + */ + if (1 < (i = sscanf(buf,"%x,%x,%x", + &hb[0], &hb[1], &hb[2]))) { + hb[0] = htons(hb[0]); hb[1] = htons(hb[1]); + hb[2] = htons(hb[2]); + cvtbase(65536L, 256, hb, i, out, len); + return; + } + + /* Need to decide if base 10, 16 or 8 */ + while (*bp) switch (*bp++) { + + case '0': case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '-': + break; + + case '8': case '9': + base10 = 1; + break; + + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + base16 = 1; + break; + + case 'x': case 'X': + *--bp = '0'; + base16 = 1; + break; + + case 'h': case 'H': + base16 = 1; + /* fall into */ + + default: + *--bp = 0; /* Ends Loop */ + } + if (base16) { + fmt = "%3x"; + ibase = 4096; + } else if (base10 == 0 && *buf == '0') { + fmt = "%3o"; + ibase = 512; + } else { + fmt = "%3d"; + ibase = 1000; + } + + for (bp = buf; *bp++; ) clen++; + if (clen == 0) clen++; + if (clen > 18) clen = 18; + i = ((clen - 1) / 3) + 1; + bp = clen + buf - 3; + hp = hb + i - 1; + + while (hp > hb) { + (void)sscanf(bp, fmt, hp); + bp[0] = 0; + hp--; + bp -= 3; + } + (void)sscanf(buf, fmt, hp); + cvtbase((long)ibase, 256, hb, i, out, len); +} + +static void +cvtbase(oldbase,newbase,input,inlen,result,reslen) + long oldbase; + int newbase; + int input[]; + int inlen; + unsigned char result[]; + int reslen; +{ + int d, e; + long sum; + + e = 1; + while (e > 0 && reslen > 0) { + d = 0; e = 0; sum = 0; + /* long division: input=input/newbase */ + while (d < inlen) { + sum = sum*oldbase + (long) input[d]; + e += (sum > 0); + input[d++] = sum / newbase; + sum %= newbase; + } + result[--reslen] = sum; /* accumulate remainder */ + } + for (d=0; d < reslen; d++) + result[d] = 0; +} diff --git a/src/lib/libc/net/ns_ntoa.c b/src/lib/libc/net/ns_ntoa.c new file mode 100644 index 0000000000..c33f710966 --- /dev/null +++ b/src/lib/libc/net/ns_ntoa.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: ns_ntoa.c,v 1.7 1997/08/24 21:25:48 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +static char *spectHex __P((char *)); + +char * +ns_ntoa(addr) + struct ns_addr addr; +{ + static char obuf[40]; + union { union ns_net net_e; u_int32_t long_e; } net; + in_port_t port = htons(addr.x_port); + register char *cp; + char *cp2; + register u_char *up = addr.x_host.c_host; + u_char *uplim = up + 6; + + net.net_e = addr.x_net; + sprintf(obuf, "%x", ntohl(net.long_e)); + cp = spectHex(obuf); + cp2 = cp + 1; + while (*up==0 && up < uplim) up++; + if (up == uplim) { + if (port) { + sprintf(cp, ".0"); + cp += 2; + } + } else { + sprintf(cp, ".%x", *up++); + while (up < uplim) { + while (*cp) cp++; + sprintf(cp, "%02x", *up++); + } + cp = spectHex(cp2); + } + if (port) { + sprintf(cp, ".%x", port); + spectHex(cp + 1); + } + return (obuf); +} + +static char * +spectHex(p0) + char *p0; +{ + int ok = 0; + int nonzero = 0; + register char *p = p0; + for (; *p; p++) switch (*p) { + + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + *p += ('A' - 'a'); + /* fall into . . . */ + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + ok = 1; + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': + nonzero = 1; + } + if (nonzero && !ok) { *p++ = 'H'; *p = 0; } + return (p); +} diff --git a/src/lib/libc/net/nsap_addr.c b/src/lib/libc/net/nsap_addr.c new file mode 100644 index 0000000000..22a5f8d66e --- /dev/null +++ b/src/lib/libc/net/nsap_addr.c @@ -0,0 +1,109 @@ +/* $OpenBSD: nsap_addr.c,v 1.4 1997/07/09 01:08:45 millert Exp $ */ + +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char rcsid[] = "$From: nsap_addr.c,v 8.3 1996/08/05 08:31:35 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: nsap_addr.c,v 1.4 1997/07/09 01:08:45 millert Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include + +static char +xtob(c) + register int c; +{ + return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); +} + +u_int +inet_nsap_addr(ascii, binary, maxlen) + const char *ascii; + u_char *binary; + int maxlen; +{ + register u_char c, nib; + u_int len = 0; + + while ((c = *ascii++) != '\0' && len < maxlen) { + if (c == '.' || c == '+' || c == '/') + continue; + if (!isascii(c)) + return (0); + if (islower(c)) + c = toupper(c); + if (isxdigit(c)) { + nib = xtob(c); + if ((c = *ascii++)) { + c = toupper(c); + if (isxdigit(c)) { + *binary++ = (nib << 4) | xtob(c); + len++; + } else + return (0); + } + else + return (0); + } + else + return (0); + } + return (len); +} + +char * +inet_nsap_ntoa(binlen, binary, ascii) + int binlen; + register const u_char *binary; + register char *ascii; +{ + register int nib; + int i; + static char tmpbuf[255*3]; + char *start; + + if (ascii) + start = ascii; + else { + ascii = tmpbuf; + start = tmpbuf; + } + + if (binlen > 255) + binlen = 255; + + for (i = 0; i < binlen; i++) { + nib = *binary >> 4; + *ascii++ = nib + (nib < 10 ? '0' : '7'); + nib = *binary++ & 0x0f; + *ascii++ = nib + (nib < 10 ? '0' : '7'); + if (((i % 2) == 0 && (i + 1) < binlen)) + *ascii++ = '.'; + } + *ascii = '\0'; + return (start); +} diff --git a/src/lib/libc/net/ntohl.c b/src/lib/libc/net/ntohl.c new file mode 100644 index 0000000000..7d3e227e60 --- /dev/null +++ b/src/lib/libc/net/ntohl.c @@ -0,0 +1,25 @@ +/* + * Written by J.T. Conklin . + * Public domain. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: ntohl.c,v 1.4 1996/12/12 03:19:56 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +#undef ntohl + +u_int32_t +ntohl(x) + u_int32_t x; +{ +#if BYTE_ORDER == LITTLE_ENDIAN + u_char *s = (u_char *)&x; + return (u_int32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]); +#else + return x; +#endif +} diff --git a/src/lib/libc/net/ntohs.c b/src/lib/libc/net/ntohs.c new file mode 100644 index 0000000000..cf6414d4a6 --- /dev/null +++ b/src/lib/libc/net/ntohs.c @@ -0,0 +1,29 @@ +/* + * Written by J.T. Conklin . + * Public domain. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: ntohs.c,v 1.6 1997/07/25 20:30:07 mickey Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +#undef ntohs + +u_int16_t +#ifdef __STDC__ +ntohs(u_int16_t x) +#else +ntohs(x) + u_int16_t x; +#endif +{ +#if BYTE_ORDER == LITTLE_ENDIAN + u_char *s = (u_char *) &x; + return (u_int16_t)(s[0] << 8 | s[1]); +#else + return x; +#endif +} diff --git a/src/lib/libc/net/rcmd.3 b/src/lib/libc/net/rcmd.3 new file mode 100644 index 0000000000..e69e822834 --- /dev/null +++ b/src/lib/libc/net/rcmd.3 @@ -0,0 +1,227 @@ +.\" $OpenBSD: rcmd.3,v 1.10 1997/09/29 18:25:47 deraadt Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd June 4, 1993 +.Dt RCMD 3 +.Os BSD 4.2 +.Sh NAME +.Nm rcmd , +.Nm rresvport , +.Nm iruserok , +.Nm ruserok +.Nd routines for returning a stream to a remote command +.Sh SYNOPSIS +.Fd #include +.Ft int +.Fn rcmd "char **ahost" "int inport" "const char *locuser" "const char *remuser" "const char *cmd" "int *fd2p" +.Ft int +.Fn rresvport "int *port" +.Ft int +.Fn iruserok "u_int32_t raddr" "int superuser" "const char *ruser" "const char *luser" +.Ft int +.Fn ruserok "const char *rhost" "int superuser" "const char *ruser" "const char *luser" +.Sh DESCRIPTION +The +.Fn rcmd +function +is used by the super-user to execute a command on a remote +machine using an authentication scheme based on reserved +port numbers. If the calling process is not setuid and the +.Li RSH +environment variable is set and +.Fa inport +is +.Li shell/tcp , +.Xr rcmdsh 3 +is called instead with the value of +.Li RSH . +Alternately, if the user is not the super-user, +.Fn rcmd +will invoke +.Xr rcmdsh 3 +to run the command via +.Xr rsh 1 . +The +.Fn rresvport +function +returns a descriptor to a socket +with an address in the privileged port space. +The +.Fn iruserok +and +.Fn ruserok +functions are used by servers +to authenticate clients requesting service with +.Fn rcmd . +All four functions are present in the same file and are used +by the +.Xr rshd 8 +server (among others). +.Pp +The +.Fn rcmd +function +looks up the host +.Fa *ahost +using +.Xr gethostbyname 3 , +returning \-1 if the host does not exist. +Otherwise +.Fa *ahost +is set to the standard name of the host +and a connection is established to a server +residing at the well-known Internet port +.Fa inport . +If the user is not the super-user, the only valid port is +.Li shell/tcp , +(usually port 514). +.Pp +If the connection succeeds, +a socket in the Internet domain of type +.Dv SOCK_STREAM +is returned to the caller, and given to the remote +command as +.Em stdin +and +.Em stdout . +If +.Fa fd2p +is non-zero, then an auxiliary channel to a control +process will be set up, and a descriptor for it will be placed +in +.Fa *fd2p . +The control process will return diagnostic +output from the command (unit 2) on this channel, and will also +accept bytes on this channel as being +.Tn UNIX +signal numbers, to be +forwarded to the process group of the command. +If +.Fa fd2p +is 0, then the +.Em stderr +(unit 2 of the remote +command) will be made the same as the +.Em stdout +and no +provision is made for sending arbitrary signals to the remote process, +although you may be able to get its attention by using out-of-band data. +Note that if the user is not the super-user, +.Fa fd2p +must be 0. +.Pp +The protocol is described in detail in +.Xr rshd 8 . +.Pp +The +.Fn rresvport +function is used to obtain a socket with a privileged +address bound to it. This socket is suitable for use +by +.Fn rcmd +and several other functions. Privileged Internet ports are those +in the range 0 to 1023. Only the super-user +is allowed to bind an address of this sort to a socket. +.Fn rresvport +needs to be seeded with a port number; if that port +is not available it will find another. +.Pp +The +.Fn iruserok +and +.Fn ruserok +functions take a remote host's IP address or name, respectively, +two user names and a flag indicating whether the local user's +name is that of the super-user. +Then, if the user is +.Em NOT +the super-user, it checks the +.Pa /etc/hosts.equiv +file. +If that lookup is not done, or is unsuccessful, the +.Pa .rhosts +in the local user's home directory is checked to see if the request for +service is allowed. +.Pp +If this file does not exist, is not a regular file, is owned by anyone +other than the user or the super-user, or is writeable by anyone other +than the owner, the check automatically fails. +Zero is returned if the machine name is listed in the +.Dq Pa hosts.equiv +file, or the host and remote user name are found in the +.Dq Pa .rhosts +file; otherwise +.Fn iruserok +and +.Fn ruserok +return \-1. +If the local domain (as obtained from +.Xr gethostname 3 ) +is the same as the remote domain, only the machine name need be specified. +.Pp +If the IP address of the remote host is known, +.Fn iruserok +should be used in preference to +.Fn ruserok , +as it does not require trusting the DNS server for the remote host's domain. +.Sh DIAGNOSTICS +The +.Fn rcmd +function +returns a valid socket descriptor on success. +It returns \-1 on error and prints a diagnostic message on the standard error. +.Pp +The +.Fn rresvport +function +returns a valid, bound socket descriptor on success. +It returns \-1 on error with the global value +.Va errno +set according to the reason for failure. +The error code +.Dv EAGAIN +is overloaded to mean ``All network ports in use.'' +.Sh SEE ALSO +.Xr rlogin 1 , +.Xr rsh 1 , +.Xr intro 2 , +.Xr rexec 3 , +.Xr rcmdsh 3 , +.Xr rexecd 8 , +.Xr rlogind 8 , +.Xr bindresvport 3 , +.Xr rshd 8 +.Sh HISTORY +These +functions appeared in +.Bx 4.2 . diff --git a/src/lib/libc/net/rcmd.c b/src/lib/libc/net/rcmd.c new file mode 100644 index 0000000000..c933f5b447 --- /dev/null +++ b/src/lib/libc/net/rcmd.c @@ -0,0 +1,607 @@ +/* + * Copyright (c) 1995, 1996, 1998 Theo de Raadt. All rights reserved. + * Copyright (c) 1983, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * This product includes software developed by Theo de Raadt. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: rcmd.c,v 1.31 1998/03/19 00:30:05 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int __ivaliduser __P((FILE *, in_addr_t, const char *, const char *)); +static int __icheckhost __P((u_int32_t, const char *)); +static char *__gethostloop __P((u_int32_t)); + +int +rcmd(ahost, rport, locuser, remuser, cmd, fd2p) + char **ahost; + in_port_t rport; + const char *locuser, *remuser, *cmd; + int *fd2p; +{ + struct hostent *hp; + struct sockaddr_in sin, from; + fd_set *readsp = NULL; + int oldmask; + pid_t pid; + int s, lport, timo; + char c, *p; + + /* call rcmdsh() with specified remote shell if appropriate. */ + if (!issetugid() && (p = getenv("RSH"))) { + struct servent *sp = getservbyname("shell", "tcp"); + + if (sp && sp->s_port == rport) + return (rcmdsh(ahost, rport, locuser, remuser, + cmd, p)); + } + + /* use rsh(1) if non-root and remote port is shell. */ + if (geteuid()) { + struct servent *sp = getservbyname("shell", "tcp"); + + if (sp && sp->s_port == rport) + return (rcmdsh(ahost, rport, locuser, remuser, + cmd, NULL)); + } + + pid = getpid(); + hp = gethostbyname(*ahost); + if (hp == NULL) { + herror(*ahost); + return (-1); + } + *ahost = hp->h_name; + + oldmask = sigblock(sigmask(SIGURG)); + for (timo = 1, lport = IPPORT_RESERVED - 1;;) { + s = rresvport(&lport); + if (s < 0) { + if (errno == EAGAIN) + (void)fprintf(stderr, + "rcmd: socket: All ports in use\n"); + else + (void)fprintf(stderr, "rcmd: socket: %s\n", + strerror(errno)); + sigsetmask(oldmask); + return (-1); + } + fcntl(s, F_SETOWN, pid); + bzero(&sin, sizeof sin); + sin.sin_len = sizeof(struct sockaddr_in); + sin.sin_family = hp->h_addrtype; + sin.sin_port = rport; + bcopy(hp->h_addr_list[0], &sin.sin_addr, hp->h_length); + if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0) + break; + (void)close(s); + if (errno == EADDRINUSE) { + lport--; + continue; + } + if (errno == ECONNREFUSED && timo <= 16) { + (void)sleep(timo); + timo *= 2; + continue; + } + if (hp->h_addr_list[1] != NULL) { + int oerrno = errno; + + (void)fprintf(stderr, "connect to address %s: ", + inet_ntoa(sin.sin_addr)); + errno = oerrno; + perror(0); + hp->h_addr_list++; + bcopy(hp->h_addr_list[0], &sin.sin_addr, hp->h_length); + (void)fprintf(stderr, "Trying %s...\n", + inet_ntoa(sin.sin_addr)); + continue; + } + (void)fprintf(stderr, "%s: %s\n", hp->h_name, strerror(errno)); + sigsetmask(oldmask); + return (-1); + } +#if 0 + /* + * try to rresvport() to the same port. This will make rresvport() + * fail it's first bind, resulting in it choosing a random port. + */ + lport--; +#endif + if (fd2p == 0) { + write(s, "", 1); + lport = 0; + } else { + char num[8]; + int s2 = rresvport(&lport), s3; + int len = sizeof(from); + int fdssize = howmany(MAX(s, s2)+1, NFDBITS) * sizeof(fd_mask); + + if (s2 < 0) + goto bad; + readsp = (fd_set *)malloc(fdssize); + if (readsp == NULL) + goto bad; + listen(s2, 1); + (void)snprintf(num, sizeof(num), "%d", lport); + if (write(s, num, strlen(num)+1) != strlen(num)+1) { + (void)fprintf(stderr, + "rcmd: write (setting up stderr): %s\n", + strerror(errno)); + (void)close(s2); + goto bad; + } +again: + bzero(readsp, fdssize); + FD_SET(s, readsp); + FD_SET(s2, readsp); + errno = 0; + if (select(MAX(s, s2) + 1, readsp, 0, 0, 0) < 1 || + !FD_ISSET(s2, readsp)) { + if (errno != 0) + (void)fprintf(stderr, + "rcmd: select (setting up stderr): %s\n", + strerror(errno)); + else + (void)fprintf(stderr, + "select: protocol failure in circuit setup\n"); + (void)close(s2); + goto bad; + } + s3 = accept(s2, (struct sockaddr *)&from, &len); + /* + * XXX careful for ftp bounce attacks. If discovered, shut them + * down and check for the real auxiliary channel to connect. + */ + if (from.sin_family == AF_INET && from.sin_port == htons(20)) { + close(s3); + goto again; + } + (void)close(s2); + if (s3 < 0) { + (void)fprintf(stderr, + "rcmd: accept: %s\n", strerror(errno)); + lport = 0; + goto bad; + } + *fd2p = s3; + from.sin_port = ntohs(from.sin_port); + if (from.sin_family != AF_INET || + from.sin_port >= IPPORT_RESERVED || + from.sin_port < IPPORT_RESERVED / 2) { + (void)fprintf(stderr, + "socket: protocol failure in circuit setup.\n"); + goto bad2; + } + } + (void)write(s, locuser, strlen(locuser)+1); + (void)write(s, remuser, strlen(remuser)+1); + (void)write(s, cmd, strlen(cmd)+1); + if (read(s, &c, 1) != 1) { + (void)fprintf(stderr, + "rcmd: %s: %s\n", *ahost, strerror(errno)); + goto bad2; + } + if (c != 0) { + while (read(s, &c, 1) == 1) { + (void)write(STDERR_FILENO, &c, 1); + if (c == '\n') + break; + } + goto bad2; + } + sigsetmask(oldmask); + free(readsp); + return (s); +bad2: + if (lport) + (void)close(*fd2p); +bad: + if (readsp) + free(readsp); + (void)close(s); + sigsetmask(oldmask); + return (-1); +} + +int +rresvport(alport) + int *alport; +{ + struct sockaddr_in sin; + int s; + + bzero(&sin, sizeof sin); + sin.sin_len = sizeof(struct sockaddr_in); + sin.sin_family = AF_INET; + sin.sin_addr.s_addr = INADDR_ANY; + s = socket(AF_INET, SOCK_STREAM, 0); + if (s < 0) + return (-1); + sin.sin_port = htons((in_port_t)*alport); + if (*alport < IPPORT_RESERVED - 1) { + if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0) + return (s); + if (errno != EADDRINUSE) { + (void)close(s); + return (-1); + } + } + sin.sin_port = 0; + if (bindresvport(s, &sin) == -1) { + (void)close(s); + return (-1); + } + *alport = (int)ntohs(sin.sin_port); + return (s); +} + +int __check_rhosts_file = 1; +char *__rcmd_errstr; + +int +ruserok(rhost, superuser, ruser, luser) + const char *rhost, *ruser, *luser; + int superuser; +{ + struct hostent *hp; + char **ap; + int i; +#define MAXADDRS 35 + u_int32_t addrs[MAXADDRS + 1]; + + if ((hp = gethostbyname(rhost)) == NULL) + return (-1); + for (i = 0, ap = hp->h_addr_list; *ap && i < MAXADDRS; ++ap, ++i) + bcopy(*ap, &addrs[i], sizeof(addrs[i])); + addrs[i] = 0; + + for (i = 0; i < MAXADDRS && addrs[i]; i++) + if (iruserok((in_addr_t)addrs[i], superuser, ruser, luser) == 0) + return (0); + return (-1); +} + +/* + * New .rhosts strategy: We are passed an ip address. We spin through + * hosts.equiv and .rhosts looking for a match. When the .rhosts only + * has ip addresses, we don't have to trust a nameserver. When it + * contains hostnames, we spin through the list of addresses the nameserver + * gives us and look for a match. + * + * Returns 0 if ok, -1 if not ok. + */ +int +iruserok(raddr, superuser, ruser, luser) + u_int32_t raddr; + int superuser; + const char *ruser, *luser; +{ + register char *cp; + struct stat sbuf; + struct passwd *pwd; + FILE *hostf; + uid_t uid; + int first; + char pbuf[MAXPATHLEN]; + + first = 1; + hostf = superuser ? NULL : fopen(_PATH_HEQUIV, "r"); +again: + if (hostf) { + if (__ivaliduser(hostf, raddr, luser, ruser) == 0) { + (void)fclose(hostf); + return (0); + } + (void)fclose(hostf); + } + if (first == 1 && (__check_rhosts_file || superuser)) { + first = 0; + if ((pwd = getpwnam(luser)) == NULL) + return (-1); + (void)strcpy(pbuf, pwd->pw_dir); + (void)strcat(pbuf, "/.rhosts"); + + /* + * Change effective uid while opening .rhosts. If root and + * reading an NFS mounted file system, can't read files that + * are protected read/write owner only. + */ + uid = geteuid(); + (void)seteuid(pwd->pw_uid); + hostf = fopen(pbuf, "r"); + (void)seteuid(uid); + + if (hostf == NULL) + return (-1); + /* + * If not a regular file, or is owned by someone other than + * user or root or if writeable by anyone but the owner, quit. + */ + cp = NULL; + if (lstat(pbuf, &sbuf) < 0) + cp = ".rhosts lstat failed"; + else if (!S_ISREG(sbuf.st_mode)) + cp = ".rhosts not regular file"; + else if (fstat(fileno(hostf), &sbuf) < 0) + cp = ".rhosts fstat failed"; + else if (sbuf.st_uid && sbuf.st_uid != pwd->pw_uid) + cp = "bad .rhosts owner"; + else if (sbuf.st_mode & (S_IWGRP|S_IWOTH)) + cp = ".rhosts writeable by other than owner"; + /* If there were any problems, quit. */ + if (cp) { + __rcmd_errstr = cp; + (void)fclose(hostf); + return (-1); + } + goto again; + } + return (-1); +} + +/* + * XXX + * Don't make static, used by lpd(8). + * + * Returns 0 if ok, -1 if not ok. + */ +int +__ivaliduser(hostf, raddrl, luser, ruser) + FILE *hostf; + in_addr_t raddrl; + const char *luser, *ruser; +{ + register char *user, *p; + char *buf; + const char *auser, *ahost; + int hostok, userok; + char *rhost = (char *)-1; + char domain[MAXHOSTNAMELEN]; + u_int32_t raddr = (u_int32_t)raddrl; + size_t buflen; + + getdomainname(domain, sizeof(domain)); + + while ((buf = fgetln(hostf, &buflen))) { + p = buf; + if (*p == '#') + continue; + while (*p != '\n' && *p != ' ' && *p != '\t' && p < buf + buflen) { + if (!isprint(*p)) + goto bail; + *p = isupper(*p) ? tolower(*p) : *p; + p++; + } + if (p >= buf + buflen) + continue; + if (*p == ' ' || *p == '\t') { + *p++ = '\0'; + while ((*p == ' ' || *p == '\t') && p < buf + buflen) + p++; + if (p >= buf + buflen) + continue; + user = p; + while (*p != '\n' && *p != ' ' && + *p != '\t' && p < buf + buflen) { + if (!isprint(*p)) + goto bail; + p++; + } + } else + user = p; + *p = '\0'; + + if (p == buf) + continue; + + auser = *user ? user : luser; + ahost = buf; + + if (strlen(ahost) >= MAXHOSTNAMELEN) + continue; + + /* + * innetgr() must lookup a hostname (we do not attempt + * to change the semantics so that netgroups may have + * #.#.#.# addresses in the list.) + */ + if (ahost[0] == '+') + switch (ahost[1]) { + case '\0': + hostok = 1; + break; + case '@': + if (rhost == (char *)-1) + rhost = __gethostloop(raddr); + hostok = 0; + if (rhost) + hostok = innetgr(&ahost[2], rhost, + NULL, domain); + break; + default: + hostok = __icheckhost(raddr, &ahost[1]); + break; + } + else if (ahost[0] == '-') + switch (ahost[1]) { + case '\0': + hostok = -1; + break; + case '@': + if (rhost == (char *)-1) + rhost = __gethostloop(raddr); + hostok = 0; + if (rhost) + hostok = -innetgr(&ahost[2], rhost, + NULL, domain); + break; + default: + hostok = -__icheckhost(raddr, &ahost[1]); + break; + } + else + hostok = __icheckhost(raddr, ahost); + + + if (auser[0] == '+') + switch (auser[1]) { + case '\0': + userok = 1; + break; + case '@': + userok = innetgr(&auser[2], NULL, ruser, + domain); + break; + default: + userok = strcmp(ruser, &auser[1]) ? 0 : 1; + break; + } + else if (auser[0] == '-') + switch (auser[1]) { + case '\0': + userok = -1; + break; + case '@': + userok = -innetgr(&auser[2], NULL, ruser, + domain); + break; + default: + userok = strcmp(ruser, &auser[1]) ? 0 : -1; + break; + } + else + userok = strcmp(ruser, auser) ? 0 : 1; + + /* Check if one component did not match */ + if (hostok == 0 || userok == 0) + continue; + + /* Check if we got a forbidden pair */ + if (userok <= -1 || hostok <= -1) + return (-1); + + /* Check if we got a valid pair */ + if (hostok >= 1 && userok >= 1) + return (0); + } +bail: + return (-1); +} + +/* + * Returns "true" if match, 0 if no match. If we do not find any + * semblance of an A->PTR->A loop, allow a simple #.#.#.# match to work. + */ +static int +__icheckhost(raddr, lhost) + u_int32_t raddr; + const char *lhost; +{ + register struct hostent *hp; + register char **pp; + struct in_addr in; + + hp = gethostbyname(lhost); + if (hp != NULL) { + /* Spin through ip addresses. */ + for (pp = hp->h_addr_list; *pp; ++pp) + if (!bcmp(&raddr, *pp, sizeof(raddr))) + return (1); + } + + in.s_addr = raddr; + if (strcmp(lhost, inet_ntoa(in)) == 0) + return (1); + return (0); +} + +/* + * Return the hostname associated with the supplied address. + * Do a reverse lookup as well for security. If a loop cannot + * be found, pack the result of inet_ntoa() into the string. + */ +static char * +__gethostloop(raddr) + u_int32_t raddr; +{ + static char remotehost[MAXHOSTNAMELEN]; + struct hostent *hp; + struct in_addr in; + + hp = gethostbyaddr((char *) &raddr, sizeof(raddr), AF_INET); + if (hp == NULL) + return (NULL); + + /* + * Look up the name and check that the supplied + * address is in the list + */ + strncpy(remotehost, hp->h_name, sizeof(remotehost) - 1); + remotehost[sizeof(remotehost) - 1] = '\0'; + hp = gethostbyname(remotehost); + if (hp == NULL) + return (NULL); + + for (; hp->h_addr_list[0] != NULL; hp->h_addr_list++) + if (!bcmp(hp->h_addr_list[0], (caddr_t)&raddr, sizeof(raddr))) + return (remotehost); + + /* + * either the DNS adminstrator has made a configuration + * mistake, or someone has attempted to spoof us + */ + in.s_addr = raddr; + syslog(LOG_NOTICE, "rcmd: address %s not listed for host %s", + inet_ntoa(in), hp->h_name); + return (NULL); +} diff --git a/src/lib/libc/net/rcmdsh.3 b/src/lib/libc/net/rcmdsh.3 new file mode 100644 index 0000000000..fd89acee8f --- /dev/null +++ b/src/lib/libc/net/rcmdsh.3 @@ -0,0 +1,108 @@ +.\" $OpenBSD: rcmdsh.3,v 1.3 1998/06/26 17:54:09 millert Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd Sep 1, 1996 +.Dt RCMDSH 3 +.Os OpenBSD +.Sh NAME +.Nm rcmdsh +.Nd return a stream to a remote command without superuser +.Sh SYNOPSIS +.Fd #include +.Ft int +.Fn rcmdsh "char **ahost" "int inport" "const char *locuser" "const char *remuser" "const char *cmd" "char *rshprog" +.Sh DESCRIPTION +The +.Fn rcmdsh +function +is used by normal users to execute a command on +a remote machine using an authentication scheme based +on reserved port numbers using +.Xr rshd 8 +or the value of +.Fa rshprog +(if non-NULL). +.Pp +The +.Fn rcmdsh +function +looks up the host +.Fa *ahost +using +.Xr gethostbyname 3 , +returning \-1 if the host does not exist. +Otherwise +.Fa *ahost +is set to the standard name of the host +and a connection is established to a server +residing at the well-known Internet port +.Li shell/tcp +(or whatever port is used by +.Fa rshprog +). The parameter +.Fa inport +is ignored; it is only included to provide an interface similar to +.Xr rcmd 3 . +.Pp +If the connection succeeds, +a socket in the +.Tn UNIX +domain of type +.Dv SOCK_STREAM +is returned to the caller, and given to the remote +command as +.Em stdin +and +.Em stdout , +and +.Em stderr . +.Sh DIAGNOSTICS +The +.Fn rcmdsh +function +returns a valid socket descriptor on success. +It returns \-1 on error and prints a diagnostic message on the standard error. +.Sh SEE ALSO +.Xr rsh 1 , +.Xr socketpair 2 , +.Xr rcmd 3 , +.Xr rshd 8 +.Sh BUGS +If +.Xr rsh 1 +gets an error a file descriptor is still returned instead of \-1. +.Sh HISTORY +The +.Fn rcmdsh +function first appeared in +.Ox 2.0 . diff --git a/src/lib/libc/net/rcmdsh.c b/src/lib/libc/net/rcmdsh.c new file mode 100644 index 0000000000..93523a4c56 --- /dev/null +++ b/src/lib/libc/net/rcmdsh.c @@ -0,0 +1,124 @@ +/* $OpenBSD: rcmdsh.c,v 1.5 1998/04/25 16:23:58 millert Exp $ */ + +/* + * This is an rcmd() replacement originally by + * Chris Siebenmann . + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: rcmdsh.c,v 1.5 1998/04/25 16:23:58 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * This is a replacement rcmd() function that uses the rsh(1) + * program in place of a direct rcmd(3) function call so as to + * avoid having to be root. Note that rport is ignored. + */ +/* ARGSUSED */ +int +rcmdsh(ahost, rport, locuser, remuser, cmd, rshprog) + char **ahost; + int rport; + const char *locuser, *remuser, *cmd; + char *rshprog; +{ + struct hostent *hp; + int cpid, sp[2]; + char *p; + struct passwd *pw; + + /* What rsh/shell to use. */ + if (rshprog == NULL) + rshprog = _PATH_RSH; + + /* locuser must exist on this host. */ + if ((pw = getpwnam(locuser)) == NULL) { + (void) fprintf(stderr, "rcmdsh: unknown user: %s\n", locuser); + return(-1); + } + + /* Validate remote hostname. */ + if (strcmp(*ahost, "localhost") != 0) { + if ((hp = gethostbyname(*ahost)) == NULL) { + herror(*ahost); + return(-1); + } + *ahost = hp->h_name; + } + + /* Get a socketpair we'll use for stdin and stdout. */ + if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, sp) < 0) { + perror("rcmdsh: socketpair"); + return(-1); + } + + cpid = fork(); + if (cpid < 0) { + perror("rcmdsh: fork failed"); + return(-1); + } else if (cpid == 0) { + /* + * Child. We use sp[1] to be stdin/stdout, and close sp[0]. + */ + (void) close(sp[0]); + if (dup2(sp[1], 0) < 0 || dup2(0, 1) < 0) { + perror("rcmdsh: dup2 failed"); + _exit(255); + } + /* Fork again to lose parent. */ + cpid = fork(); + if (cpid < 0) { + perror("rcmdsh: fork to lose parent failed"); + _exit(255); + } + if (cpid > 0) + _exit(0); + + /* In grandchild here. Become local user for rshprog. */ + if (setuid(pw->pw_uid)) { + (void) fprintf(stderr, "rcmdsh: setuid(%u): %s\n", + pw->pw_uid, strerror(errno)); + _exit(255); + } + + /* + * If remote host is "localhost" and local and remote user + * are the same, avoid running remote shell for efficiency. + */ + if (!strcmp(*ahost, "localhost") && !strcmp(locuser, remuser)) { + if (pw->pw_shell[0] == '\0') + rshprog = _PATH_BSHELL; + else + rshprog = pw->pw_shell; + p = strrchr(rshprog, '/'); + execlp(rshprog, p ? p+1 : rshprog, "-c", cmd, + (char *) NULL); + } else { + p = strrchr(rshprog, '/'); + execlp(rshprog, p ? p+1 : rshprog, *ahost, "-l", + remuser, cmd, (char *) NULL); + } + (void) fprintf(stderr, "rcmdsh: execlp %s failed: %s\n", + rshprog, strerror(errno)); + _exit(255); + } else { + /* Parent. close sp[1], return sp[0]. */ + (void) close(sp[1]); + /* Reap child. */ + (void) wait(NULL); + return(sp[0]); + } + /* NOTREACHED */ +} diff --git a/src/lib/libc/net/recv.c b/src/lib/libc/net/recv.c new file mode 100644 index 0000000000..d209a07213 --- /dev/null +++ b/src/lib/libc/net/recv.c @@ -0,0 +1,50 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: recv.c,v 1.2 1996/08/19 08:29:40 tholo Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include + +#include + +ssize_t +recv(s, buf, len, flags) + int s, flags; + size_t len; + void *buf; +{ + return (recvfrom(s, buf, len, flags, NULL, 0)); +} diff --git a/src/lib/libc/net/res_comp.c b/src/lib/libc/net/res_comp.c new file mode 100644 index 0000000000..f7a0358967 --- /dev/null +++ b/src/lib/libc/net/res_comp.c @@ -0,0 +1,510 @@ +/* $OpenBSD: res_comp.c,v 1.8 1997/07/09 01:08:49 millert Exp $ */ + +/* + * ++Copyright++ 1985, 1993 + * - + * Copyright (c) 1985, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93"; +static char rcsid[] = "$From: res_comp.c,v 8.11 1996/12/02 09:17:22 vixie Exp $"; +#else +static char rcsid[] = "$OpenBSD: res_comp.c,v 1.8 1997/07/09 01:08:49 millert Exp $"; +#endif +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +static int dn_find __P((u_char *exp_dn, u_char *msg, + u_char **dnptrs, u_char **lastdnptr)); + +/* + * Expand compressed domain name 'comp_dn' to full domain name. + * 'msg' is a pointer to the begining of the message, + * 'eomorig' points to the first location after the message, + * 'exp_dn' is a pointer to a buffer of size 'length' for the result. + * Return size of compressed name or -1 if there was an error. + */ +int +dn_expand(msg, eomorig, comp_dn, exp_dn, length) + const u_char *msg, *eomorig, *comp_dn; + char *exp_dn; + int length; +{ + register const u_char *cp; + register char *dn; + register int n, c; + char *eom; + int len = -1, checked = 0; + + dn = exp_dn; + cp = comp_dn; + if (length > MAXHOSTNAMELEN-1) + length = MAXHOSTNAMELEN-1; + eom = exp_dn + length; + /* + * fetch next label in domain name + */ + while ((n = *cp++)) { + /* + * Check for indirection + */ + switch (n & INDIR_MASK) { + case 0: + if (dn != exp_dn) { + if (dn >= eom) + return (-1); + *dn++ = '.'; + } + if (dn+n >= eom) + return (-1); + checked += n + 1; + while (--n >= 0) { + if (((c = *cp++) == '.') || (c == '\\')) { + if (dn + n + 2 >= eom) + return (-1); + *dn++ = '\\'; + } + *dn++ = c; + if (cp >= eomorig) /* out of range */ + return (-1); + } + break; + + case INDIR_MASK: + if (len < 0) + len = cp - comp_dn + 1; + cp = msg + (((n & 0x3f) << 8) | (*cp & 0xff)); + if (cp < msg || cp >= eomorig) /* out of range */ + return (-1); + checked += 2; + /* + * Check for loops in the compressed name; + * if we've looked at the whole message, + * there must be a loop. + */ + if (checked >= eomorig - msg) + return (-1); + break; + + default: + return (-1); /* flag error */ + } + } + *dn = '\0'; + if (len < 0) + len = cp - comp_dn; + return (len); +} + +/* + * Compress domain name 'exp_dn' into 'comp_dn'. + * Return the size of the compressed name or -1. + * 'length' is the size of the array pointed to by 'comp_dn'. + * 'dnptrs' is a list of pointers to previous compressed names. dnptrs[0] + * is a pointer to the beginning of the message. The list ends with NULL. + * 'lastdnptr' is a pointer to the end of the arrary pointed to + * by 'dnptrs'. Side effect is to update the list of pointers for + * labels inserted into the message as we compress the name. + * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr' + * is NULL, we don't update the list. + */ +int +dn_comp(exp_dn, comp_dn, length, dnptrs, lastdnptr) + const char *exp_dn; + u_char *comp_dn, **dnptrs, **lastdnptr; + int length; +{ + register u_char *cp, *dn; + register int c, l; + u_char **cpp, **lpp, *sp, *eob; + u_char *msg; + + dn = (u_char *)exp_dn; + cp = comp_dn; + eob = cp + length; + lpp = cpp = NULL; + if (dnptrs != NULL) { + if ((msg = *dnptrs++) != NULL) { + for (cpp = dnptrs; *cpp != NULL; cpp++) + ; + lpp = cpp; /* end of list to search */ + } + } else + msg = NULL; + for (c = *dn++; c != '\0'; ) { + /* look to see if we can use pointers */ + if (msg != NULL) { + if ((l = dn_find(dn-1, msg, dnptrs, lpp)) >= 0) { + if (cp+1 >= eob) + return (-1); + *cp++ = (l >> 8) | INDIR_MASK; + *cp++ = l % 256; + return (cp - comp_dn); + } + /* not found, save it */ + if (lastdnptr != NULL && cpp < lastdnptr-1) { + *cpp++ = cp; + *cpp = NULL; + } + } + sp = cp++; /* save ptr to length byte */ + do { + if (c == '.') { + c = *dn++; + break; + } + if (c == '\\') { + if ((c = *dn++) == '\0') + break; + } + if (cp >= eob) { + if (msg != NULL) + *lpp = NULL; + return (-1); + } + *cp++ = c; + } while ((c = *dn++) != '\0'); + /* catch trailing '.'s but not '..' */ + if ((l = cp - sp - 1) == 0 && c == '\0') { + cp--; + break; + } + if (l <= 0 || l > MAXLABEL) { + if (msg != NULL) + *lpp = NULL; + return (-1); + } + *sp = l; + } + if (cp >= eob) { + if (msg != NULL) + *lpp = NULL; + return (-1); + } + *cp++ = '\0'; + return (cp - comp_dn); +} + +/* + * Skip over a compressed domain name. Return the size or -1. + */ +int +__dn_skipname(comp_dn, eom) + const u_char *comp_dn, *eom; +{ + register const u_char *cp; + register int n; + + cp = comp_dn; + while (cp < eom && (n = *cp++)) { + /* + * check for indirection + */ + switch (n & INDIR_MASK) { + case 0: /* normal case, n == len */ + cp += n; + continue; + case INDIR_MASK: /* indirection */ + cp++; + break; + default: /* illegal type */ + return (-1); + } + break; + } + if (cp > eom) + return (-1); + return (cp - comp_dn); +} + +static int +mklower(ch) + register int ch; +{ + if (isascii(ch) && isupper(ch)) + return (tolower(ch)); + return (ch); +} + +/* + * Search for expanded name from a list of previously compressed names. + * Return the offset from msg if found or -1. + * dnptrs is the pointer to the first name on the list, + * not the pointer to the start of the message. + */ +static int +dn_find(exp_dn, msg, dnptrs, lastdnptr) + u_char *exp_dn, *msg; + u_char **dnptrs, **lastdnptr; +{ + register u_char *dn, *cp, **cpp; + register int n; + u_char *sp; + + for (cpp = dnptrs; cpp < lastdnptr; cpp++) { + dn = exp_dn; + sp = cp = *cpp; + while ((n = *cp++)) { + /* + * check for indirection + */ + switch (n & INDIR_MASK) { + case 0: /* normal case, n == len */ + while (--n >= 0) { + if (*dn == '.') + goto next; + if (*dn == '\\') + dn++; + if (mklower(*dn++) != mklower(*cp++)) + goto next; + } + if ((n = *dn++) == '\0' && *cp == '\0') + return (sp - msg); + if (n == '.') + continue; + goto next; + + case INDIR_MASK: /* indirection */ + cp = msg + (((n & 0x3f) << 8) | *cp); + break; + + default: /* illegal type */ + return (-1); + } + } + if (*dn == '\0') + return (sp - msg); + next: ; + } + return (-1); +} + +/* + * Verify that a domain name uses an acceptable character set. + */ + +/* + * Note the conspicuous absence of ctype macros in these definitions. On + * non-ASCII hosts, we can't depend on string literals or ctype macros to + * tell us anything about network-format data. The rest of the BIND system + * is not careful about this, but for some reason, we're doing it right here. + */ +#define PERIOD 0x2e +#define hyphenchar(c) ((c) == 0x2d) +#define bslashchar(c) ((c) == 0x5c) +#define periodchar(c) ((c) == PERIOD) +#define asterchar(c) ((c) == 0x2a) +#define alphachar(c) (((c) >= 0x41 && (c) <= 0x5a) \ + || ((c) >= 0x61 && (c) <= 0x7a)) +#define digitchar(c) ((c) >= 0x30 && (c) <= 0x39) + +#define borderchar(c) (alphachar(c) || digitchar(c)) +#define middlechar(c) (borderchar(c) || hyphenchar(c)) +#define domainchar(c) ((c) > 0x20 && (c) < 0x7f) + +int +res_hnok(dn) + const char *dn; +{ + int pch = PERIOD, ch = *dn++; + + while (ch != '\0') { + int nch = *dn++; + + if (periodchar(ch)) { + ; + } else if (periodchar(pch)) { + if (!borderchar(ch)) + return (0); + } else if (periodchar(nch) || nch == '\0') { + if (!borderchar(ch)) + return (0); + } else { + if (!middlechar(ch)) + return (0); + } + pch = ch, ch = nch; + } + return (1); +} + +/* + * hostname-like (A, MX, WKS) owners can have "*" as their first label + * but must otherwise be as a host name. + */ +int +res_ownok(dn) + const char *dn; +{ + if (asterchar(dn[0])) { + if (periodchar(dn[1])) + return (res_hnok(dn+2)); + if (dn[1] == '\0') + return (1); + } + return (res_hnok(dn)); +} + +/* + * SOA RNAMEs and RP RNAMEs can have any printable character in their first + * label, but the rest of the name has to look like a host name. + */ +int +res_mailok(dn) + const char *dn; +{ + int ch, escaped = 0; + + /* "." is a valid missing representation */ + if (*dn == '\0') + return(1); + + /* otherwise