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-rw-r--r--src/lib/libcrypto/bio/bss_sock.c461
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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#if !defined(NO_SOCK) || defined(BIO_FD)
60
61#include <stdio.h>
62#include <errno.h>
63#define USE_SOCKETS
64#include "cryptlib.h"
65#include "bio.h"
66
67#ifndef BIO_FD
68#ifndef NOPROTO
69static int sock_write(BIO *h,char *buf,int num);
70static int sock_read(BIO *h,char *buf,int size);
71static int sock_puts(BIO *h,char *str);
72static long sock_ctrl(BIO *h,int cmd,long arg1,char *arg2);
73static int sock_new(BIO *h);
74static int sock_free(BIO *data);
75int BIO_sock_should_retry(int s);
76#else
77static int sock_write();
78static int sock_read();
79static int sock_puts();
80static long sock_ctrl();
81static int sock_new();
82static int sock_free();
83int BIO_sock_should_retry();
84#endif
85
86#else
87
88#ifndef NOPROTO
89static int fd_write(BIO *h,char *buf,int num);
90static int fd_read(BIO *h,char *buf,int size);
91static int fd_puts(BIO *h,char *str);
92static long fd_ctrl(BIO *h,int cmd,long arg1,char *arg2);
93static int fd_new(BIO *h);
94static int fd_free(BIO *data);
95int BIO_fd_should_retry(int s);
96#else
97static int fd_write();
98static int fd_read();
99static int fd_puts();
100static long fd_ctrl();
101static int fd_new();
102static int fd_free();
103int BIO_fd_should_retry();
104#endif
105#endif
106
107#ifndef BIO_FD
108static BIO_METHOD methods_sockp=
109 {
110 BIO_TYPE_SOCKET,
111 "socket",
112 sock_write,
113 sock_read,
114 sock_puts,
115 NULL, /* sock_gets, */
116 sock_ctrl,
117 sock_new,
118 sock_free,
119 };
120
121BIO_METHOD *BIO_s_socket()
122 {
123 return(&methods_sockp);
124 }
125#else
126static BIO_METHOD methods_fdp=
127 {
128 BIO_TYPE_FD,"file descriptor",
129 fd_write,
130 fd_read,
131 fd_puts,
132 NULL, /* fd_gets, */
133 fd_ctrl,
134 fd_new,
135 fd_free,
136 };
137
138BIO_METHOD *BIO_s_fd()
139 {
140 return(&methods_fdp);
141 }
142#endif
143
144#ifndef BIO_FD
145BIO *BIO_new_socket(fd,close_flag)
146#else
147BIO *BIO_new_fd(fd,close_flag)
148#endif
149int fd;
150int close_flag;
151 {
152 BIO *ret;
153
154#ifndef BIO_FD
155 ret=BIO_new(BIO_s_socket());
156#else
157 ret=BIO_new(BIO_s_fd());
158#endif
159 if (ret == NULL) return(NULL);
160 BIO_set_fd(ret,fd,close_flag);
161 return(ret);
162 }
163
164#ifndef BIO_FD
165static int sock_new(bi)
166#else
167static int fd_new(bi)
168#endif
169BIO *bi;
170 {
171 bi->init=0;
172 bi->num=0;
173 bi->ptr=NULL;
174 bi->flags=0;
175 return(1);
176 }
177
178#ifndef BIO_FD
179static int sock_free(a)
180#else
181static int fd_free(a)
182#endif
183BIO *a;
184 {
185 if (a == NULL) return(0);
186 if (a->shutdown)
187 {
188 if (a->init)
189 {
190#ifndef BIO_FD
191 shutdown(a->num,2);
192# ifdef WINDOWS
193 closesocket(a->num);
194# else
195 close(a->num);
196# endif
197#else /* BIO_FD */
198 close(a->num);
199#endif
200
201 }
202 a->init=0;
203 a->flags=0;
204 }
205 return(1);
206 }
207
208#ifndef BIO_FD
209static int sock_read(b,out,outl)
210#else
211static int fd_read(b,out,outl)
212#endif
213BIO *b;
214char *out;
215int outl;
216 {
217 int ret=0;
218
219 if (out != NULL)
220 {
221#if defined(WINDOWS) && !defined(BIO_FD)
222 clear_socket_error();
223 ret=recv(b->num,out,outl,0);
224#else
225 clear_sys_error();
226 ret=read(b->num,out,outl);
227#endif
228 BIO_clear_retry_flags(b);
229 if (ret <= 0)
230 {
231#ifndef BIO_FD
232 if (BIO_sock_should_retry(ret))
233#else
234 if (BIO_fd_should_retry(ret))
235#endif
236 BIO_set_retry_read(b);
237 }
238 }
239 return(ret);
240 }
241
242#ifndef BIO_FD
243static int sock_write(b,in,inl)
244#else
245static int fd_write(b,in,inl)
246#endif
247BIO *b;
248char *in;
249int inl;
250 {
251 int ret;
252
253#if defined(WINDOWS) && !defined(BIO_FD)
254 clear_socket_error();
255 ret=send(b->num,in,inl,0);
256#else
257 clear_sys_error();
258 ret=write(b->num,in,inl);
259#endif
260 BIO_clear_retry_flags(b);
261 if (ret <= 0)
262 {
263#ifndef BIO_FD
264 if (BIO_sock_should_retry(ret))
265#else
266 if (BIO_fd_should_retry(ret))
267#endif
268 BIO_set_retry_write(b);
269 }
270 return(ret);
271 }
272
273#ifndef BIO_FD
274static long sock_ctrl(b,cmd,num,ptr)
275#else
276static long fd_ctrl(b,cmd,num,ptr)
277#endif
278BIO *b;
279int cmd;
280long num;
281char *ptr;
282 {
283 long ret=1;
284 int *ip;
285
286 switch (cmd)
287 {
288 case BIO_CTRL_RESET:
289#ifdef BIO_FD
290 ret=(long)lseek(b->num,0,0);
291#else
292 ret=0;
293#endif
294 break;
295 case BIO_CTRL_INFO:
296 ret=0;
297 break;
298 case BIO_C_SET_FD:
299#ifndef BIO_FD
300 sock_free(b);
301#else
302 fd_free(b);
303#endif
304 b->num= *((int *)ptr);
305 b->shutdown=(int)num;
306 b->init=1;
307 break;
308 case BIO_C_GET_FD:
309 if (b->init)
310 {
311 ip=(int *)ptr;
312 if (ip != NULL) *ip=b->num;
313 ret=b->num;
314 }
315 else
316 ret= -1;
317 break;
318 case BIO_CTRL_GET_CLOSE:
319 ret=b->shutdown;
320 break;
321 case BIO_CTRL_SET_CLOSE:
322 b->shutdown=(int)num;
323 break;
324 case BIO_CTRL_PENDING:
325 case BIO_CTRL_WPENDING:
326 ret=0;
327 break;
328 case BIO_CTRL_DUP:
329 case BIO_CTRL_FLUSH:
330 ret=1;
331 break;
332 break;
333 default:
334 ret=0;
335 break;
336 }
337 return(ret);
338 }
339
340#ifdef undef
341static int sock_gets(bp,buf,size)
342BIO *bp;
343char *buf;
344int size;
345 {
346 return(-1);
347 }
348#endif
349
350#ifndef BIO_FD
351static int sock_puts(bp,str)
352#else
353static int fd_puts(bp,str)
354#endif
355BIO *bp;
356char *str;
357 {
358 int n,ret;
359
360 n=strlen(str);
361#ifndef BIO_FD
362 ret=sock_write(bp,str,n);
363#else
364 ret=fd_write(bp,str,n);
365#endif
366 return(ret);
367 }
368
369#ifndef BIO_FD
370int BIO_sock_should_retry(i)
371#else
372int BIO_fd_should_retry(i)
373#endif
374int i;
375 {
376 int err;
377
378 if ((i == 0) || (i == -1))
379 {
380#if !defined(BIO_FD) && defined(WINDOWS)
381 err=get_last_socket_error();
382#else
383 err=get_last_sys_error();
384#endif
385
386#if defined(WINDOWS) /* more microsoft stupidity */
387 if ((i == -1) && (err == 0))
388 return(1);
389#endif
390
391#ifndef BIO_FD
392 return(BIO_sock_non_fatal_error(err));
393#else
394 return(BIO_fd_non_fatal_error(err));
395#endif
396 }
397 return(0);
398 }
399
400#ifndef BIO_FD
401int BIO_sock_non_fatal_error(err)
402#else
403int BIO_fd_non_fatal_error(err)
404#endif
405int err;
406 {
407 switch (err)
408 {
409#if !defined(BIO_FD) && defined(WINDOWS)
410# if defined(WSAEWOULDBLOCK)
411 case WSAEWOULDBLOCK:
412# endif
413
414# if defined(WSAENOTCONN)
415 case WSAENOTCONN:
416# endif
417#endif
418
419#ifdef EWOULDBLOCK
420# ifdef WSAEWOULDBLOCK
421# if WSAEWOULDBLOCK != EWOULDBLOCK
422 case EWOULDBLOCK:
423# endif
424# else
425 case EWOULDBLOCK:
426# endif
427#endif
428
429#if defined(ENOTCONN)
430 case ENOTCONN:
431#endif
432
433#ifdef EINTR
434 case EINTR:
435#endif
436
437#ifdef EAGAIN
438#if EWOULDBLOCK != EAGAIN
439 case EAGAIN:
440# endif
441#endif
442
443#ifdef EPROTO
444 case EPROTO:
445#endif
446
447#ifdef EINPROGRESS
448 case EINPROGRESS:
449#endif
450
451#ifdef EALREADY
452 case EALREADY:
453#endif
454 return(1);
455 break;
456 default:
457 break;
458 }
459 return(0);
460 }
461#endif
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