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1d39ada8 PJ |
1 | /* crypto/bio/b_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. | |
4ac84f86 | 22 | * |
1d39ada8 PJ |
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.] | |
4ac84f86 GCPL |
57 | */ |
58 | ||
59 | #include <stdio.h> | |
60 | #include <stdlib.h> | |
61 | #include <errno.h> | |
1d39ada8 PJ |
62 | #define USE_SOCKETS |
63 | #include "cryptlib.h" | |
64 | #include <openssl/bio.h> | |
65 | #if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) | |
66 | # include <netdb.h> | |
67 | # if defined(NETWARE_CLIB) | |
68 | # include <sys/ioctl.h> | |
4ac84f86 | 69 | NETDB_DEFINE_CONTEXT |
1d39ada8 | 70 | # endif |
4ac84f86 GCPL |
71 | #endif |
72 | #ifndef OPENSSL_NO_SOCK | |
1d39ada8 | 73 | # include <openssl/dso.h> |
4ac84f86 GCPL |
74 | # define SOCKET_PROTOCOL IPPROTO_TCP |
75 | # ifdef SO_MAXCONN | |
76 | # define MAX_LISTEN SO_MAXCONN | |
77 | # elif defined(SOMAXCONN) | |
78 | # define MAX_LISTEN SOMAXCONN | |
79 | # else | |
80 | # define MAX_LISTEN 32 | |
81 | # endif | |
1d39ada8 | 82 | # if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
4ac84f86 GCPL |
83 | static int wsa_init_done = 0; |
84 | # endif | |
85 | ||
1d39ada8 PJ |
86 | /* |
87 | * WSAAPI specifier is required to make indirect calls to run-time | |
88 | * linked WinSock 2 functions used in this module, to be specific | |
89 | * [get|free]addrinfo and getnameinfo. This is because WinSock uses | |
90 | * uses non-C calling convention, __stdcall vs. __cdecl, on x86 | |
91 | * Windows. On non-WinSock platforms WSAAPI needs to be void. | |
92 | */ | |
93 | # ifndef WSAAPI | |
94 | # define WSAAPI | |
95 | # endif | |
96 | ||
97 | # if 0 | |
98 | static unsigned long BIO_ghbn_hits = 0L; | |
99 | static unsigned long BIO_ghbn_miss = 0L; | |
100 | ||
101 | # define GHBN_NUM 4 | |
102 | static struct ghbn_cache_st { | |
103 | char name[129]; | |
104 | struct hostent *ent; | |
105 | unsigned long order; | |
106 | } ghbn_cache[GHBN_NUM]; | |
107 | # endif | |
108 | ||
109 | static int get_ip(const char *str, unsigned char *ip); | |
110 | # if 0 | |
111 | static void ghbn_free(struct hostent *a); | |
112 | static struct hostent *ghbn_dup(struct hostent *a); | |
113 | # endif | |
4ac84f86 GCPL |
114 | int BIO_get_host_ip(const char *str, unsigned char *ip) |
115 | { | |
1d39ada8 PJ |
116 | int i; |
117 | int err = 1; | |
118 | int locked = 0; | |
119 | struct hostent *he; | |
4ac84f86 | 120 | |
1d39ada8 PJ |
121 | i = get_ip(str, ip); |
122 | if (i < 0) { | |
123 | BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_INVALID_IP_ADDRESS); | |
124 | goto err; | |
125 | } | |
126 | ||
127 | /* | |
128 | * At this point, we have something that is most probably correct in some | |
129 | * way, so let's init the socket. | |
130 | */ | |
4ac84f86 GCPL |
131 | if (BIO_sock_init() != 1) |
132 | return 0; /* don't generate another error code here */ | |
133 | ||
1d39ada8 PJ |
134 | /* |
135 | * If the string actually contained an IP address, we need not do | |
136 | * anything more | |
137 | */ | |
138 | if (i > 0) | |
139 | return (1); | |
140 | ||
141 | /* do a gethostbyname */ | |
142 | CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); | |
143 | locked = 1; | |
144 | he = BIO_gethostbyname(str); | |
145 | if (he == NULL) { | |
146 | BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP); | |
147 | goto err; | |
148 | } | |
4ac84f86 | 149 | |
1d39ada8 PJ |
150 | /* cast to short because of win16 winsock definition */ |
151 | if ((short)he->h_addrtype != AF_INET) { | |
152 | BIOerr(BIO_F_BIO_GET_HOST_IP, | |
153 | BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); | |
154 | goto err; | |
0f3dfc01 | 155 | } |
1d39ada8 PJ |
156 | for (i = 0; i < 4; i++) |
157 | ip[i] = he->h_addr_list[0][i]; | |
158 | err = 0; | |
0f3dfc01 | 159 | |
1d39ada8 PJ |
160 | err: |
161 | if (locked) | |
162 | CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); | |
163 | if (err) { | |
164 | ERR_add_error_data(2, "host=", str); | |
165 | return 0; | |
166 | } else | |
167 | return 1; | |
4ac84f86 GCPL |
168 | } |
169 | ||
170 | int BIO_get_port(const char *str, unsigned short *port_ptr) | |
171 | { | |
1d39ada8 PJ |
172 | int i; |
173 | struct servent *s; | |
4ac84f86 GCPL |
174 | |
175 | if (str == NULL) { | |
176 | BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED); | |
177 | return (0); | |
178 | } | |
1d39ada8 PJ |
179 | i = atoi(str); |
180 | if (i != 0) | |
181 | *port_ptr = (unsigned short)i; | |
182 | else { | |
183 | CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); | |
184 | /* | |
185 | * Note: under VMS with SOCKETSHR, it seems like the first parameter | |
186 | * is 'char *', instead of 'const char *' | |
187 | */ | |
188 | # ifndef CONST_STRICT | |
189 | s = getservbyname((char *)str, "tcp"); | |
190 | # else | |
191 | s = getservbyname(str, "tcp"); | |
192 | # endif | |
193 | if (s != NULL) | |
194 | *port_ptr = ntohs((unsigned short)s->s_port); | |
195 | CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); | |
196 | if (s == NULL) { | |
197 | if (strcmp(str, "http") == 0) | |
198 | *port_ptr = 80; | |
199 | else if (strcmp(str, "telnet") == 0) | |
200 | *port_ptr = 23; | |
201 | else if (strcmp(str, "socks") == 0) | |
202 | *port_ptr = 1080; | |
203 | else if (strcmp(str, "https") == 0) | |
204 | *port_ptr = 443; | |
205 | else if (strcmp(str, "ssl") == 0) | |
206 | *port_ptr = 443; | |
207 | else if (strcmp(str, "ftp") == 0) | |
208 | *port_ptr = 21; | |
209 | else if (strcmp(str, "gopher") == 0) | |
210 | *port_ptr = 70; | |
211 | # if 0 | |
212 | else if (strcmp(str, "wais") == 0) | |
213 | *port_ptr = 21; | |
214 | # endif | |
215 | else { | |
216 | SYSerr(SYS_F_GETSERVBYNAME, get_last_socket_error()); | |
217 | ERR_add_error_data(3, "service='", str, "'"); | |
218 | return (0); | |
219 | } | |
4ac84f86 GCPL |
220 | } |
221 | } | |
1d39ada8 | 222 | return (1); |
4ac84f86 GCPL |
223 | } |
224 | ||
225 | int BIO_sock_error(int sock) | |
226 | { | |
1d39ada8 PJ |
227 | int j, i; |
228 | union { | |
229 | size_t s; | |
230 | int i; | |
231 | } size; | |
232 | ||
233 | # if defined(OPENSSL_SYS_BEOS_R5) | |
234 | return 0; | |
235 | # endif | |
4ac84f86 | 236 | |
1d39ada8 PJ |
237 | /* heuristic way to adapt for platforms that expect 64-bit optlen */ |
238 | size.s = 0, size.i = sizeof(j); | |
4ac84f86 GCPL |
239 | /* |
240 | * Note: under Windows the third parameter is of type (char *) whereas | |
241 | * under other systems it is (void *) if you don't have a cast it will | |
242 | * choke the compiler: if you do have a cast then you can either go for | |
243 | * (char *) or (void *). | |
244 | */ | |
1d39ada8 | 245 | i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, (void *)&size); |
4ac84f86 | 246 | if (i < 0) |
1d39ada8 | 247 | return (1); |
4ac84f86 GCPL |
248 | else |
249 | return (j); | |
250 | } | |
251 | ||
1d39ada8 PJ |
252 | # if 0 |
253 | long BIO_ghbn_ctrl(int cmd, int iarg, char *parg) | |
254 | { | |
255 | int i; | |
256 | char **p; | |
257 | ||
258 | switch (cmd) { | |
259 | case BIO_GHBN_CTRL_HITS: | |
260 | return (BIO_ghbn_hits); | |
261 | /* break; */ | |
262 | case BIO_GHBN_CTRL_MISSES: | |
263 | return (BIO_ghbn_miss); | |
264 | /* break; */ | |
265 | case BIO_GHBN_CTRL_CACHE_SIZE: | |
266 | return (GHBN_NUM); | |
267 | /* break; */ | |
268 | case BIO_GHBN_CTRL_GET_ENTRY: | |
269 | if ((iarg >= 0) && (iarg < GHBN_NUM) && (ghbn_cache[iarg].order > 0)) { | |
270 | p = (char **)parg; | |
271 | if (p == NULL) | |
272 | return (0); | |
273 | *p = ghbn_cache[iarg].name; | |
274 | ghbn_cache[iarg].name[128] = '\0'; | |
275 | return (1); | |
276 | } | |
277 | return (0); | |
278 | /* break; */ | |
279 | case BIO_GHBN_CTRL_FLUSH: | |
280 | for (i = 0; i < GHBN_NUM; i++) | |
281 | ghbn_cache[i].order = 0; | |
282 | break; | |
283 | default: | |
284 | return (0); | |
285 | } | |
286 | return (1); | |
287 | } | |
288 | # endif | |
289 | ||
290 | # if 0 | |
291 | static struct hostent *ghbn_dup(struct hostent *a) | |
292 | { | |
293 | struct hostent *ret; | |
294 | int i, j; | |
295 | ||
296 | MemCheck_off(); | |
297 | ret = (struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); | |
298 | if (ret == NULL) | |
299 | return (NULL); | |
300 | memset(ret, 0, sizeof(struct hostent)); | |
301 | ||
302 | for (i = 0; a->h_aliases[i] != NULL; i++) ; | |
303 | i++; | |
304 | ret->h_aliases = (char **)OPENSSL_malloc(i * sizeof(char *)); | |
305 | if (ret->h_aliases == NULL) | |
306 | goto err; | |
307 | memset(ret->h_aliases, 0, i * sizeof(char *)); | |
308 | ||
309 | for (i = 0; a->h_addr_list[i] != NULL; i++) ; | |
310 | i++; | |
311 | ret->h_addr_list = (char **)OPENSSL_malloc(i * sizeof(char *)); | |
312 | if (ret->h_addr_list == NULL) | |
313 | goto err; | |
314 | memset(ret->h_addr_list, 0, i * sizeof(char *)); | |
315 | ||
316 | j = strlen(a->h_name) + 1; | |
317 | if ((ret->h_name = OPENSSL_malloc(j)) == NULL) | |
318 | goto err; | |
319 | memcpy((char *)ret->h_name, a->h_name, j); | |
320 | for (i = 0; a->h_aliases[i] != NULL; i++) { | |
321 | j = strlen(a->h_aliases[i]) + 1; | |
322 | if ((ret->h_aliases[i] = OPENSSL_malloc(j)) == NULL) | |
323 | goto err; | |
324 | memcpy(ret->h_aliases[i], a->h_aliases[i], j); | |
325 | } | |
326 | ret->h_length = a->h_length; | |
327 | ret->h_addrtype = a->h_addrtype; | |
328 | for (i = 0; a->h_addr_list[i] != NULL; i++) { | |
329 | if ((ret->h_addr_list[i] = OPENSSL_malloc(a->h_length)) == NULL) | |
330 | goto err; | |
331 | memcpy(ret->h_addr_list[i], a->h_addr_list[i], a->h_length); | |
332 | } | |
333 | if (0) { | |
334 | err: | |
335 | if (ret != NULL) | |
336 | ghbn_free(ret); | |
337 | ret = NULL; | |
338 | } | |
339 | MemCheck_on(); | |
340 | return (ret); | |
341 | } | |
342 | ||
343 | static void ghbn_free(struct hostent *a) | |
344 | { | |
345 | int i; | |
346 | ||
347 | if (a == NULL) | |
348 | return; | |
349 | ||
350 | if (a->h_aliases != NULL) { | |
351 | for (i = 0; a->h_aliases[i] != NULL; i++) | |
352 | OPENSSL_free(a->h_aliases[i]); | |
353 | OPENSSL_free(a->h_aliases); | |
354 | } | |
355 | if (a->h_addr_list != NULL) { | |
356 | for (i = 0; a->h_addr_list[i] != NULL; i++) | |
357 | OPENSSL_free(a->h_addr_list[i]); | |
358 | OPENSSL_free(a->h_addr_list); | |
359 | } | |
360 | if (a->h_name != NULL) | |
361 | OPENSSL_free(a->h_name); | |
362 | OPENSSL_free(a); | |
363 | } | |
364 | ||
365 | # endif | |
366 | ||
4ac84f86 GCPL |
367 | struct hostent *BIO_gethostbyname(const char *name) |
368 | { | |
1d39ada8 | 369 | # if 1 |
4ac84f86 GCPL |
370 | /* |
371 | * Caching gethostbyname() results forever is wrong, so we have to let | |
372 | * the true gethostbyname() worry about this | |
373 | */ | |
374 | # if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__)) | |
375 | return gethostbyname((char *)name); | |
376 | # else | |
377 | return gethostbyname(name); | |
378 | # endif | |
1d39ada8 PJ |
379 | # else |
380 | struct hostent *ret; | |
381 | int i, lowi = 0, j; | |
382 | unsigned long low = (unsigned long)-1; | |
383 | ||
384 | # if 0 | |
385 | /* | |
386 | * It doesn't make sense to use locking here: The function interface is | |
387 | * not thread-safe, because threads can never be sure when some other | |
388 | * thread destroys the data they were given a pointer to. | |
389 | */ | |
390 | CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); | |
391 | # endif | |
392 | j = strlen(name); | |
393 | if (j < 128) { | |
394 | for (i = 0; i < GHBN_NUM; i++) { | |
395 | if (low > ghbn_cache[i].order) { | |
396 | low = ghbn_cache[i].order; | |
397 | lowi = i; | |
398 | } | |
399 | if (ghbn_cache[i].order > 0) { | |
400 | if (strncmp(name, ghbn_cache[i].name, 128) == 0) | |
401 | break; | |
402 | } | |
403 | } | |
404 | } else | |
405 | i = GHBN_NUM; | |
406 | ||
407 | if (i == GHBN_NUM) { /* no hit */ | |
408 | BIO_ghbn_miss++; | |
409 | /* | |
410 | * Note: under VMS with SOCKETSHR, it seems like the first parameter | |
411 | * is 'char *', instead of 'const char *' | |
412 | */ | |
413 | # ifndef CONST_STRICT | |
414 | ret = gethostbyname((char *)name); | |
415 | # else | |
416 | ret = gethostbyname(name); | |
417 | # endif | |
418 | ||
419 | if (ret == NULL) | |
420 | goto end; | |
421 | if (j > 128) { /* too big to cache */ | |
422 | # if 0 | |
423 | /* | |
424 | * If we were trying to make this function thread-safe (which is | |
425 | * bound to fail), we'd have to give up in this case (or allocate | |
426 | * more memory). | |
427 | */ | |
428 | ret = NULL; | |
429 | # endif | |
430 | goto end; | |
431 | } | |
432 | ||
433 | /* else add to cache */ | |
434 | if (ghbn_cache[lowi].ent != NULL) | |
435 | ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ | |
436 | ghbn_cache[lowi].name[0] = '\0'; | |
437 | ||
438 | if ((ret = ghbn_cache[lowi].ent = ghbn_dup(ret)) == NULL) { | |
439 | BIOerr(BIO_F_BIO_GETHOSTBYNAME, ERR_R_MALLOC_FAILURE); | |
440 | goto end; | |
441 | } | |
442 | strncpy(ghbn_cache[lowi].name, name, 128); | |
443 | ghbn_cache[lowi].order = BIO_ghbn_miss + BIO_ghbn_hits; | |
444 | } else { | |
445 | BIO_ghbn_hits++; | |
446 | ret = ghbn_cache[i].ent; | |
447 | ghbn_cache[i].order = BIO_ghbn_miss + BIO_ghbn_hits; | |
448 | } | |
449 | end: | |
450 | # if 0 | |
451 | CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); | |
452 | # endif | |
453 | return (ret); | |
0f3dfc01 | 454 | # endif |
1d39ada8 | 455 | } |
4ac84f86 GCPL |
456 | |
457 | int BIO_sock_init(void) | |
458 | { | |
459 | # ifdef OPENSSL_SYS_WINDOWS | |
460 | static struct WSAData wsa_state; | |
461 | ||
462 | if (!wsa_init_done) { | |
463 | int err; | |
464 | ||
465 | wsa_init_done = 1; | |
466 | memset(&wsa_state, 0, sizeof(wsa_state)); | |
467 | /* | |
468 | * Not making wsa_state available to the rest of the code is formally | |
1d39ada8 | 469 | * wrong. But the structures we use are [beleived to be] invariable |
4ac84f86 GCPL |
470 | * among Winsock DLLs, while API availability is [expected to be] |
471 | * probed at run-time with DSO_global_lookup. | |
472 | */ | |
473 | if (WSAStartup(0x0202, &wsa_state) != 0) { | |
474 | err = WSAGetLastError(); | |
475 | SYSerr(SYS_F_WSASTARTUP, err); | |
476 | BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP); | |
477 | return (-1); | |
478 | } | |
479 | } | |
480 | # endif /* OPENSSL_SYS_WINDOWS */ | |
481 | # ifdef WATT32 | |
482 | extern int _watt_do_exit; | |
483 | _watt_do_exit = 0; /* don't make sock_init() call exit() */ | |
484 | if (sock_init()) | |
485 | return (-1); | |
486 | # endif | |
487 | ||
1d39ada8 PJ |
488 | # if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
489 | WORD wVerReq; | |
490 | WSADATA wsaData; | |
491 | int err; | |
492 | ||
493 | if (!wsa_init_done) { | |
494 | wsa_init_done = 1; | |
495 | wVerReq = MAKEWORD(2, 0); | |
496 | err = WSAStartup(wVerReq, &wsaData); | |
497 | if (err != 0) { | |
498 | SYSerr(SYS_F_WSASTARTUP, err); | |
499 | BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP); | |
500 | return (-1); | |
501 | } | |
502 | } | |
503 | # endif | |
504 | ||
4ac84f86 GCPL |
505 | return (1); |
506 | } | |
507 | ||
1d39ada8 | 508 | void BIO_sock_cleanup(void) |
4ac84f86 GCPL |
509 | { |
510 | # ifdef OPENSSL_SYS_WINDOWS | |
1d39ada8 PJ |
511 | if (wsa_init_done) { |
512 | wsa_init_done = 0; | |
513 | # if 0 /* this call is claimed to be non-present in | |
514 | * Winsock2 */ | |
515 | WSACancelBlockingCall(); | |
516 | # endif | |
517 | WSACleanup(); | |
518 | } | |
519 | # elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) | |
4ac84f86 GCPL |
520 | if (wsa_init_done) { |
521 | wsa_init_done = 0; | |
522 | WSACleanup(); | |
523 | } | |
524 | # endif | |
525 | } | |
526 | ||
527 | # if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000 | |
528 | ||
529 | int BIO_socket_ioctl(int fd, long type, void *arg) | |
530 | { | |
531 | int i; | |
532 | ||
533 | # ifdef __DJGPP__ | |
534 | i = ioctlsocket(fd, type, (char *)arg); | |
535 | # else | |
536 | # if defined(OPENSSL_SYS_VMS) | |
537 | /*- | |
538 | * 2011-02-18 SMS. | |
539 | * VMS ioctl() can't tolerate a 64-bit "void *arg", but we | |
540 | * observe that all the consumers pass in an "unsigned long *", | |
541 | * so we arrange a local copy with a short pointer, and use | |
542 | * that, instead. | |
543 | */ | |
544 | # if __INITIAL_POINTER_SIZE == 64 | |
545 | # define ARG arg_32p | |
546 | # pragma pointer_size save | |
547 | # pragma pointer_size 32 | |
548 | unsigned long arg_32; | |
549 | unsigned long *arg_32p; | |
550 | # pragma pointer_size restore | |
551 | arg_32p = &arg_32; | |
552 | arg_32 = *((unsigned long *)arg); | |
553 | # else /* __INITIAL_POINTER_SIZE == 64 */ | |
554 | # define ARG arg | |
555 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ | |
556 | # else /* defined(OPENSSL_SYS_VMS) */ | |
557 | # define ARG arg | |
558 | # endif /* defined(OPENSSL_SYS_VMS) [else] */ | |
559 | ||
560 | i = ioctlsocket(fd, type, ARG); | |
561 | # endif /* __DJGPP__ */ | |
562 | if (i < 0) | |
563 | SYSerr(SYS_F_IOCTLSOCKET, get_last_socket_error()); | |
564 | return (i); | |
565 | } | |
566 | # endif /* __VMS_VER */ | |
567 | ||
1d39ada8 PJ |
568 | /* |
569 | * The reason I have implemented this instead of using sscanf is because | |
570 | * Visual C 1.52c gives an unresolved external when linking a DLL :-( | |
571 | */ | |
572 | static int get_ip(const char *str, unsigned char ip[4]) | |
4ac84f86 | 573 | { |
1d39ada8 PJ |
574 | unsigned int tmp[4]; |
575 | int num = 0, c, ok = 0; | |
576 | ||
577 | tmp[0] = tmp[1] = tmp[2] = tmp[3] = 0; | |
578 | ||
579 | for (;;) { | |
580 | c = *(str++); | |
581 | if ((c >= '0') && (c <= '9')) { | |
582 | ok = 1; | |
583 | tmp[num] = tmp[num] * 10 + c - '0'; | |
584 | if (tmp[num] > 255) | |
585 | return (0); | |
586 | } else if (c == '.') { | |
587 | if (!ok) | |
588 | return (-1); | |
589 | if (num == 3) | |
590 | return (0); | |
591 | num++; | |
592 | ok = 0; | |
593 | } else if (c == '\0' && (num == 3) && ok) | |
594 | break; | |
595 | else | |
596 | return (0); | |
597 | } | |
598 | ip[0] = tmp[0]; | |
599 | ip[1] = tmp[1]; | |
600 | ip[2] = tmp[2]; | |
601 | ip[3] = tmp[3]; | |
602 | return (1); | |
603 | } | |
4ac84f86 | 604 | |
1d39ada8 PJ |
605 | int BIO_get_accept_socket(char *host, int bind_mode) |
606 | { | |
607 | int ret = 0; | |
608 | union { | |
609 | struct sockaddr sa; | |
610 | struct sockaddr_in sa_in; | |
611 | # if OPENSSL_USE_IPV6 | |
612 | struct sockaddr_in6 sa_in6; | |
613 | # endif | |
614 | } server, client; | |
615 | int s = INVALID_SOCKET, cs, addrlen; | |
616 | unsigned char ip[4]; | |
617 | unsigned short port; | |
618 | char *str = NULL, *e; | |
619 | char *h, *p; | |
620 | unsigned long l; | |
621 | int err_num; | |
4ac84f86 | 622 | |
0f3dfc01 | 623 | if (BIO_sock_init() != 1) |
1d39ada8 PJ |
624 | return (INVALID_SOCKET); |
625 | ||
626 | if ((str = BUF_strdup(host)) == NULL) | |
627 | return (INVALID_SOCKET); | |
628 | ||
629 | h = p = NULL; | |
630 | h = str; | |
631 | for (e = str; *e; e++) { | |
632 | if (*e == ':') { | |
633 | p = e; | |
634 | } else if (*e == '/') { | |
635 | *e = '\0'; | |
636 | break; | |
637 | } | |
638 | } | |
639 | if (p) | |
640 | *p++ = '\0'; /* points at last ':', '::port' is special | |
641 | * [see below] */ | |
642 | else | |
643 | p = h, h = NULL; | |
644 | ||
645 | # ifdef EAI_FAMILY | |
646 | do { | |
647 | static union { | |
648 | void *p; | |
649 | int (WSAAPI *f) (const char *, const char *, | |
650 | const struct addrinfo *, struct addrinfo **); | |
651 | } p_getaddrinfo = { | |
652 | NULL | |
653 | }; | |
654 | static union { | |
655 | void *p; | |
656 | void (WSAAPI *f) (struct addrinfo *); | |
657 | } p_freeaddrinfo = { | |
658 | NULL | |
659 | }; | |
660 | struct addrinfo *res, hint; | |
661 | ||
662 | if (p_getaddrinfo.p == NULL) { | |
663 | if ((p_getaddrinfo.p = DSO_global_lookup("getaddrinfo")) == NULL | |
664 | || (p_freeaddrinfo.p = | |
665 | DSO_global_lookup("freeaddrinfo")) == NULL) | |
666 | p_getaddrinfo.p = (void *)-1; | |
667 | } | |
668 | if (p_getaddrinfo.p == (void *)-1) | |
669 | break; | |
4ac84f86 | 670 | |
1d39ada8 PJ |
671 | /* |
672 | * '::port' enforces IPv6 wildcard listener. Some OSes, e.g. Solaris, | |
673 | * default to IPv6 without any hint. Also note that commonly IPv6 | |
674 | * wildchard socket can service IPv4 connections just as well... | |
675 | */ | |
676 | memset(&hint, 0, sizeof(hint)); | |
677 | hint.ai_flags = AI_PASSIVE; | |
678 | if (h) { | |
679 | if (strchr(h, ':')) { | |
680 | if (h[1] == '\0') | |
681 | h = NULL; | |
682 | # if OPENSSL_USE_IPV6 | |
683 | hint.ai_family = AF_INET6; | |
684 | # else | |
685 | h = NULL; | |
686 | # endif | |
687 | } else if (h[0] == '*' && h[1] == '\0') { | |
688 | hint.ai_family = AF_INET; | |
689 | h = NULL; | |
690 | } | |
691 | } | |
4ac84f86 | 692 | |
1d39ada8 PJ |
693 | if ((*p_getaddrinfo.f) (h, p, &hint, &res)) |
694 | break; | |
695 | ||
696 | addrlen = res->ai_addrlen <= sizeof(server) ? | |
697 | res->ai_addrlen : sizeof(server); | |
698 | memcpy(&server, res->ai_addr, addrlen); | |
699 | ||
700 | (*p_freeaddrinfo.f) (res); | |
701 | goto again; | |
702 | } while (0); | |
703 | # endif | |
704 | ||
705 | if (!BIO_get_port(p, &port)) | |
4ac84f86 | 706 | goto err; |
1d39ada8 PJ |
707 | |
708 | memset((char *)&server, 0, sizeof(server)); | |
709 | server.sa_in.sin_family = AF_INET; | |
710 | server.sa_in.sin_port = htons(port); | |
711 | addrlen = sizeof(server.sa_in); | |
712 | ||
713 | if (h == NULL || strcmp(h, "*") == 0) | |
714 | server.sa_in.sin_addr.s_addr = INADDR_ANY; | |
715 | else { | |
716 | if (!BIO_get_host_ip(h, &(ip[0]))) | |
717 | goto err; | |
718 | l = (unsigned long) | |
719 | ((unsigned long)ip[0] << 24L) | | |
720 | ((unsigned long)ip[1] << 16L) | | |
721 | ((unsigned long)ip[2] << 8L) | ((unsigned long)ip[3]); | |
722 | server.sa_in.sin_addr.s_addr = htonl(l); | |
4ac84f86 | 723 | } |
4ac84f86 | 724 | |
1d39ada8 PJ |
725 | again: |
726 | s = socket(server.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL); | |
727 | if (s == INVALID_SOCKET) { | |
728 | SYSerr(SYS_F_SOCKET, get_last_socket_error()); | |
729 | ERR_add_error_data(3, "port='", host, "'"); | |
730 | BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_CREATE_SOCKET); | |
731 | goto err; | |
4ac84f86 | 732 | } |
1d39ada8 PJ |
733 | # ifdef SO_REUSEADDR |
734 | if (bind_mode == BIO_BIND_REUSEADDR) { | |
735 | int i = 1; | |
0f3dfc01 | 736 | |
1d39ada8 PJ |
737 | ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&i, sizeof(i)); |
738 | bind_mode = BIO_BIND_NORMAL; | |
739 | } | |
740 | # endif | |
741 | if (bind(s, &server.sa, addrlen) == -1) { | |
742 | # ifdef SO_REUSEADDR | |
743 | err_num = get_last_socket_error(); | |
744 | if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) && | |
745 | # ifdef OPENSSL_SYS_WINDOWS | |
746 | /* | |
747 | * Some versions of Windows define EADDRINUSE to a dummy value. | |
748 | */ | |
749 | (err_num == WSAEADDRINUSE)) | |
750 | # else | |
751 | (err_num == EADDRINUSE)) | |
752 | # endif | |
753 | { | |
754 | client = server; | |
755 | if (h == NULL || strcmp(h, "*") == 0) { | |
756 | # if OPENSSL_USE_IPV6 | |
757 | if (client.sa.sa_family == AF_INET6) { | |
758 | memset(&client.sa_in6.sin6_addr, 0, | |
759 | sizeof(client.sa_in6.sin6_addr)); | |
760 | client.sa_in6.sin6_addr.s6_addr[15] = 1; | |
761 | } else | |
762 | # endif | |
763 | if (client.sa.sa_family == AF_INET) { | |
764 | client.sa_in.sin_addr.s_addr = htonl(0x7F000001); | |
765 | } else | |
766 | goto err; | |
767 | } | |
768 | cs = socket(client.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL); | |
769 | if (cs != INVALID_SOCKET) { | |
770 | int ii; | |
771 | ii = connect(cs, &client.sa, addrlen); | |
772 | closesocket(cs); | |
773 | if (ii == INVALID_SOCKET) { | |
774 | bind_mode = BIO_BIND_REUSEADDR; | |
775 | closesocket(s); | |
776 | goto again; | |
777 | } | |
778 | /* else error */ | |
779 | } | |
780 | /* else error */ | |
781 | } | |
782 | # endif | |
783 | SYSerr(SYS_F_BIND, err_num); | |
784 | ERR_add_error_data(3, "port='", host, "'"); | |
785 | BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_BIND_SOCKET); | |
786 | goto err; | |
787 | } | |
788 | if (listen(s, MAX_LISTEN) == -1) { | |
789 | SYSerr(SYS_F_BIND, get_last_socket_error()); | |
790 | ERR_add_error_data(3, "port='", host, "'"); | |
791 | BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_LISTEN_SOCKET); | |
792 | goto err; | |
793 | } | |
794 | ret = 1; | |
0f3dfc01 | 795 | err: |
1d39ada8 PJ |
796 | if (str != NULL) |
797 | OPENSSL_free(str); | |
798 | if ((ret == 0) && (s != INVALID_SOCKET)) { | |
799 | closesocket(s); | |
800 | s = INVALID_SOCKET; | |
801 | } | |
802 | return (s); | |
4ac84f86 GCPL |
803 | } |
804 | ||
1d39ada8 | 805 | int BIO_accept(int sock, char **addr) |
4ac84f86 | 806 | { |
1d39ada8 PJ |
807 | int ret = INVALID_SOCKET; |
808 | unsigned long l; | |
809 | unsigned short port; | |
810 | char *p; | |
4ac84f86 | 811 | |
1d39ada8 PJ |
812 | struct { |
813 | /* | |
814 | * As for following union. Trouble is that there are platforms | |
815 | * that have socklen_t and there are platforms that don't, on | |
816 | * some platforms socklen_t is int and on some size_t. So what | |
817 | * one can do? One can cook #ifdef spaghetti, which is nothing | |
818 | * but masochistic. Or one can do union between int and size_t. | |
819 | * One naturally does it primarily for 64-bit platforms where | |
820 | * sizeof(int) != sizeof(size_t). But would it work? Note that | |
821 | * if size_t member is initialized to 0, then later int member | |
822 | * assignment naturally does the job on little-endian platforms | |
823 | * regardless accept's expectations! What about big-endians? | |
824 | * If accept expects int*, then it works, and if size_t*, then | |
825 | * length value would appear as unreasonably large. But this | |
826 | * won't prevent it from filling in the address structure. The | |
827 | * trouble of course would be if accept returns more data than | |
828 | * actual buffer can accomodate and overwrite stack... That's | |
829 | * where early OPENSSL_assert comes into picture. Besides, the | |
830 | * only 64-bit big-endian platform found so far that expects | |
831 | * size_t* is HP-UX, where stack grows towards higher address. | |
832 | * <appro> | |
833 | */ | |
834 | union { | |
835 | size_t s; | |
836 | int i; | |
837 | } len; | |
838 | union { | |
839 | struct sockaddr sa; | |
840 | struct sockaddr_in sa_in; | |
841 | # if OPENSSL_USE_IPV6 | |
842 | struct sockaddr_in6 sa_in6; | |
843 | # endif | |
844 | } from; | |
845 | } sa; | |
846 | ||
847 | sa.len.s = 0; | |
848 | sa.len.i = sizeof(sa.from); | |
849 | memset(&sa.from, 0, sizeof(sa.from)); | |
850 | ret = accept(sock, &sa.from.sa, (void *)&sa.len); | |
851 | if (sizeof(sa.len.i) != sizeof(sa.len.s) && sa.len.i == 0) { | |
852 | OPENSSL_assert(sa.len.s <= sizeof(sa.from)); | |
853 | sa.len.i = (int)sa.len.s; | |
854 | /* use sa.len.i from this point */ | |
855 | } | |
856 | if (ret == INVALID_SOCKET) { | |
857 | if (BIO_sock_should_retry(ret)) | |
858 | return -2; | |
4ac84f86 GCPL |
859 | SYSerr(SYS_F_ACCEPT, get_last_socket_error()); |
860 | BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR); | |
861 | goto end; | |
862 | } | |
863 | ||
1d39ada8 PJ |
864 | if (addr == NULL) |
865 | goto end; | |
4ac84f86 | 866 | |
1d39ada8 PJ |
867 | # ifdef EAI_FAMILY |
868 | do { | |
869 | char h[NI_MAXHOST], s[NI_MAXSERV]; | |
870 | size_t nl; | |
871 | static union { | |
872 | void *p; | |
873 | int (WSAAPI *f) (const struct sockaddr *, size_t /* socklen_t */ , | |
874 | char *, size_t, char *, size_t, int); | |
875 | } p_getnameinfo = { | |
876 | NULL | |
877 | }; | |
878 | /* | |
879 | * 2nd argument to getnameinfo is specified to be socklen_t. | |
880 | * Unfortunately there is a number of environments where socklen_t is | |
881 | * not defined. As it's passed by value, it's safe to pass it as | |
882 | * size_t... <appro> | |
883 | */ | |
884 | ||
885 | if (p_getnameinfo.p == NULL) { | |
886 | if ((p_getnameinfo.p = DSO_global_lookup("getnameinfo")) == NULL) | |
887 | p_getnameinfo.p = (void *)-1; | |
888 | } | |
889 | if (p_getnameinfo.p == (void *)-1) | |
890 | break; | |
891 | ||
892 | if ((*p_getnameinfo.f) (&sa.from.sa, sa.len.i, h, sizeof(h), s, | |
893 | sizeof(s), NI_NUMERICHOST | NI_NUMERICSERV)) | |
894 | break; | |
895 | nl = strlen(h) + strlen(s) + 2; | |
896 | p = *addr; | |
897 | if (p) { | |
898 | *p = '\0'; | |
899 | p = OPENSSL_realloc(p, nl); | |
0f3dfc01 | 900 | } else { |
1d39ada8 PJ |
901 | p = OPENSSL_malloc(nl); |
902 | } | |
903 | if (p == NULL) { | |
904 | BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE); | |
905 | goto end; | |
906 | } | |
907 | *addr = p; | |
908 | BIO_snprintf(*addr, nl, "%s:%s", h, s); | |
909 | goto end; | |
910 | } while (0); | |
911 | # endif | |
912 | if (sa.from.sa.sa_family != AF_INET) | |
913 | goto end; | |
914 | l = ntohl(sa.from.sa_in.sin_addr.s_addr); | |
915 | port = ntohs(sa.from.sa_in.sin_port); | |
916 | if (*addr == NULL) { | |
917 | if ((p = OPENSSL_malloc(24)) == NULL) { | |
918 | BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE); | |
919 | goto end; | |
4ac84f86 | 920 | } |
1d39ada8 | 921 | *addr = p; |
4ac84f86 | 922 | } |
1d39ada8 PJ |
923 | BIO_snprintf(*addr, 24, "%d.%d.%d.%d:%d", |
924 | (unsigned char)(l >> 24L) & 0xff, | |
925 | (unsigned char)(l >> 16L) & 0xff, | |
926 | (unsigned char)(l >> 8L) & 0xff, | |
927 | (unsigned char)(l) & 0xff, port); | |
4ac84f86 | 928 | end: |
1d39ada8 | 929 | return (ret); |
4ac84f86 GCPL |
930 | } |
931 | ||
932 | int BIO_set_tcp_ndelay(int s, int on) | |
933 | { | |
934 | int ret = 0; | |
935 | # if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP)) | |
936 | int opt; | |
937 | ||
938 | # ifdef SOL_TCP | |
939 | opt = SOL_TCP; | |
940 | # else | |
941 | # ifdef IPPROTO_TCP | |
942 | opt = IPPROTO_TCP; | |
943 | # endif | |
944 | # endif | |
945 | ||
946 | ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on)); | |
947 | # endif | |
948 | return (ret == 0); | |
949 | } | |
950 | ||
951 | int BIO_socket_nbio(int s, int mode) | |
952 | { | |
953 | int ret = -1; | |
954 | int l; | |
955 | ||
956 | l = mode; | |
957 | # ifdef FIONBIO | |
958 | ret = BIO_socket_ioctl(s, FIONBIO, &l); | |
959 | # endif | |
960 | return (ret == 0); | |
961 | } | |
962 | #endif |