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-rw-r--r--src/lib/libcrypto/bio/bss_sock.c305
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diff --git a/src/lib/libcrypto/bio/bss_sock.c b/src/lib/libcrypto/bio/bss_sock.c
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1/* crypto/bio/bss_sock.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#ifndef OPENSSL_NO_SOCK
60
61#include <stdio.h>
62#include <errno.h>
63#define USE_SOCKETS
64#include "cryptlib.h"
65#include <openssl/bio.h>
66
67#ifdef WATT32
68#define sock_write SockWrite /* Watt-32 uses same names */
69#define sock_read SockRead
70#define sock_puts SockPuts
71#endif
72
73static int sock_write(BIO *h, const char *buf, int num);
74static int sock_read(BIO *h, char *buf, int size);
75static int sock_puts(BIO *h, const char *str);
76static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2);
77static int sock_new(BIO *h);
78static int sock_free(BIO *data);
79int BIO_sock_should_retry(int s);
80
81static BIO_METHOD methods_sockp=
82 {
83 BIO_TYPE_SOCKET,
84 "socket",
85 sock_write,
86 sock_read,
87 sock_puts,
88 NULL, /* sock_gets, */
89 sock_ctrl,
90 sock_new,
91 sock_free,
92 NULL,
93 };
94
95BIO_METHOD *BIO_s_socket(void)
96 {
97 return(&methods_sockp);
98 }
99
100BIO *BIO_new_socket(int fd, int close_flag)
101 {
102 BIO *ret;
103
104 ret=BIO_new(BIO_s_socket());
105 if (ret == NULL) return(NULL);
106 BIO_set_fd(ret,fd,close_flag);
107 return(ret);
108 }
109
110static int sock_new(BIO *bi)
111 {
112 bi->init=0;
113 bi->num=0;
114 bi->ptr=NULL;
115 bi->flags=0;
116 return(1);
117 }
118
119static int sock_free(BIO *a)
120 {
121 if (a == NULL) return(0);
122 if (a->shutdown)
123 {
124 if (a->init)
125 {
126 SHUTDOWN2(a->num);
127 }
128 a->init=0;
129 a->flags=0;
130 }
131 return(1);
132 }
133
134static int sock_read(BIO *b, char *out, int outl)
135 {
136 int ret=0;
137
138 if (out != NULL)
139 {
140 clear_socket_error();
141 ret=readsocket(b->num,out,outl);
142 BIO_clear_retry_flags(b);
143 if (ret <= 0)
144 {
145 if (BIO_sock_should_retry(ret))
146 BIO_set_retry_read(b);
147 }
148 }
149 return(ret);
150 }
151
152static int sock_write(BIO *b, const char *in, int inl)
153 {
154 int ret;
155
156 clear_socket_error();
157 ret=writesocket(b->num,in,inl);
158 BIO_clear_retry_flags(b);
159 if (ret <= 0)
160 {
161 if (BIO_sock_should_retry(ret))
162 BIO_set_retry_write(b);
163 }
164 return(ret);
165 }
166
167static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
168 {
169 long ret=1;
170 int *ip;
171
172 switch (cmd)
173 {
174 case BIO_CTRL_RESET:
175 num=0;
176 case BIO_C_FILE_SEEK:
177 ret=0;
178 break;
179 case BIO_C_FILE_TELL:
180 case BIO_CTRL_INFO:
181 ret=0;
182 break;
183 case BIO_C_SET_FD:
184 sock_free(b);
185 b->num= *((int *)ptr);
186 b->shutdown=(int)num;
187 b->init=1;
188 break;
189 case BIO_C_GET_FD:
190 if (b->init)
191 {
192 ip=(int *)ptr;
193 if (ip != NULL) *ip=b->num;
194 ret=b->num;
195 }
196 else
197 ret= -1;
198 break;
199 case BIO_CTRL_GET_CLOSE:
200 ret=b->shutdown;
201 break;
202 case BIO_CTRL_SET_CLOSE:
203 b->shutdown=(int)num;
204 break;
205 case BIO_CTRL_PENDING:
206 case BIO_CTRL_WPENDING:
207 ret=0;
208 break;
209 case BIO_CTRL_DUP:
210 case BIO_CTRL_FLUSH:
211 ret=1;
212 break;
213 default:
214 ret=0;
215 break;
216 }
217 return(ret);
218 }
219
220static int sock_puts(BIO *bp, const char *str)
221 {
222 int n,ret;
223
224 n=strlen(str);
225 ret=sock_write(bp,str,n);
226 return(ret);
227 }
228
229int BIO_sock_should_retry(int i)
230 {
231 int err;
232
233 if ((i == 0) || (i == -1))
234 {
235 err=get_last_socket_error();
236
237#if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
238 if ((i == -1) && (err == 0))
239 return(1);
240#endif
241
242 return(BIO_sock_non_fatal_error(err));
243 }
244 return(0);
245 }
246
247int BIO_sock_non_fatal_error(int err)
248 {
249 switch (err)
250 {
251#if defined(OPENSSL_SYS_WINDOWS)
252# if defined(WSAEWOULDBLOCK)
253 case WSAEWOULDBLOCK:
254# endif
255
256# if 0 /* This appears to always be an error */
257# if defined(WSAENOTCONN)
258 case WSAENOTCONN:
259# endif
260# endif
261#endif
262
263#ifdef EWOULDBLOCK
264# ifdef WSAEWOULDBLOCK
265# if WSAEWOULDBLOCK != EWOULDBLOCK
266 case EWOULDBLOCK:
267# endif
268# else
269 case EWOULDBLOCK:
270# endif
271#endif
272
273#if defined(ENOTCONN)
274 case ENOTCONN:
275#endif
276
277#ifdef EINTR
278 case EINTR:
279#endif
280
281#ifdef EAGAIN
282#if EWOULDBLOCK != EAGAIN
283 case EAGAIN:
284# endif
285#endif
286
287#ifdef EPROTO
288 case EPROTO:
289#endif
290
291#ifdef EINPROGRESS
292 case EINPROGRESS:
293#endif
294
295#ifdef EALREADY
296 case EALREADY:
297#endif
298 return(1);
299 /* break; */
300 default:
301 break;
302 }
303 return(0);
304 }
305#endif
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