1 files changed, 223 insertions, 0 deletions

diff --git a/src/lib/libc/net/ns_addr.c b/src/lib/libc/net/ns_addr.c
new file mode 100644
index 0000000000..0f8feda55c
--- /dev/null
+++ b/src/lib/libc/net/ns_addr.c
@@ -0,0 +1,223 @@
+/*
+ * 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. 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 1.8 2003/06/02 20:18:35 millert Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netns/ns.h>
+#include <stdio.h>
+#include <string.h>
+
+static struct ns_addr addr, zero_addr;
+
+static void Field(char *, u_int8_t *, int);
+static void cvtbase(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];
+
+        strlcpy(buf, name, sizeof(buf));
+
+        /*
+         * 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 compatibility.
+         */
+        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;
+}