Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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. |
| 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 | #include <stdio.h> |
| 60 | #include <stdlib.h> |
| 61 | #include <errno.h> |
| 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> |
| 69 | NETDB_DEFINE_CONTEXT |
| 70 | #endif |
| 71 | #endif |
| 72 | |
| 73 | #ifndef OPENSSL_NO_SOCK |
| 74 | |
| 75 | #include <openssl/dso.h> |
| 76 | |
| 77 | #define SOCKET_PROTOCOL IPPROTO_TCP |
| 78 | |
| 79 | #ifdef SO_MAXCONN |
| 80 | #define MAX_LISTEN SO_MAXCONN |
| 81 | #elif defined(SOMAXCONN) |
| 82 | #define MAX_LISTEN SOMAXCONN |
| 83 | #else |
| 84 | #define MAX_LISTEN 32 |
| 85 | #endif |
| 86 | |
| 87 | #if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| 88 | static int wsa_init_done=0; |
| 89 | #endif |
| 90 | |
| 91 | /* |
| 92 | * WSAAPI specifier is required to make indirect calls to run-time |
| 93 | * linked WinSock 2 functions used in this module, to be specific |
| 94 | * [get|free]addrinfo and getnameinfo. This is because WinSock uses |
| 95 | * uses non-C calling convention, __stdcall vs. __cdecl, on x86 |
| 96 | * Windows. On non-WinSock platforms WSAAPI needs to be void. |
| 97 | */ |
| 98 | #ifndef WSAAPI |
| 99 | #define WSAAPI |
| 100 | #endif |
| 101 | |
| 102 | #if 0 |
| 103 | static unsigned long BIO_ghbn_hits=0L; |
| 104 | static unsigned long BIO_ghbn_miss=0L; |
| 105 | |
| 106 | #define GHBN_NUM 4 |
| 107 | static struct ghbn_cache_st |
| 108 | { |
| 109 | char name[129]; |
| 110 | struct hostent *ent; |
| 111 | unsigned long order; |
| 112 | } ghbn_cache[GHBN_NUM]; |
| 113 | #endif |
| 114 | |
| 115 | static int get_ip(const char *str,unsigned char *ip); |
| 116 | #if 0 |
| 117 | static void ghbn_free(struct hostent *a); |
| 118 | static struct hostent *ghbn_dup(struct hostent *a); |
| 119 | #endif |
| 120 | int BIO_get_host_ip(const char *str, unsigned char *ip) |
| 121 | { |
| 122 | int i; |
| 123 | int err = 1; |
| 124 | int locked = 0; |
| 125 | struct hostent *he; |
| 126 | |
| 127 | i=get_ip(str,ip); |
| 128 | if (i < 0) |
| 129 | { |
| 130 | BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS); |
| 131 | goto err; |
| 132 | } |
| 133 | |
| 134 | /* At this point, we have something that is most probably correct |
| 135 | in some way, so let's init the socket. */ |
| 136 | if (BIO_sock_init() != 1) |
| 137 | return 0; /* don't generate another error code here */ |
| 138 | |
| 139 | /* If the string actually contained an IP address, we need not do |
| 140 | anything more */ |
| 141 | if (i > 0) return(1); |
| 142 | |
| 143 | /* do a gethostbyname */ |
| 144 | CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); |
| 145 | locked = 1; |
| 146 | he=BIO_gethostbyname(str); |
| 147 | if (he == NULL) |
| 148 | { |
| 149 | BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP); |
| 150 | goto err; |
| 151 | } |
| 152 | |
| 153 | /* cast to short because of win16 winsock definition */ |
| 154 | if ((short)he->h_addrtype != AF_INET) |
| 155 | { |
| 156 | BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); |
| 157 | goto err; |
| 158 | } |
| 159 | for (i=0; i<4; i++) |
| 160 | ip[i]=he->h_addr_list[0][i]; |
| 161 | err = 0; |
| 162 | |
| 163 | err: |
| 164 | if (locked) |
| 165 | CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); |
| 166 | if (err) |
| 167 | { |
| 168 | ERR_add_error_data(2,"host=",str); |
| 169 | return 0; |
| 170 | } |
| 171 | else |
| 172 | return 1; |
| 173 | } |
| 174 | |
| 175 | int BIO_get_port(const char *str, unsigned short *port_ptr) |
| 176 | { |
| 177 | int i; |
| 178 | struct servent *s; |
| 179 | |
| 180 | if (str == NULL) |
| 181 | { |
| 182 | BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED); |
| 183 | return(0); |
| 184 | } |
| 185 | i=atoi(str); |
| 186 | if (i != 0) |
| 187 | *port_ptr=(unsigned short)i; |
| 188 | else |
| 189 | { |
| 190 | CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); |
| 191 | /* Note: under VMS with SOCKETSHR, it seems like the first |
| 192 | * parameter is 'char *', instead of 'const char *' |
| 193 | */ |
| 194 | #ifndef CONST_STRICT |
| 195 | s=getservbyname((char *)str,"tcp"); |
| 196 | #else |
| 197 | s=getservbyname(str,"tcp"); |
| 198 | #endif |
| 199 | if(s != NULL) |
| 200 | *port_ptr=ntohs((unsigned short)s->s_port); |
| 201 | CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); |
| 202 | if(s == NULL) |
| 203 | { |
| 204 | if (strcmp(str,"http") == 0) |
| 205 | *port_ptr=80; |
| 206 | else if (strcmp(str,"telnet") == 0) |
| 207 | *port_ptr=23; |
| 208 | else if (strcmp(str,"socks") == 0) |
| 209 | *port_ptr=1080; |
| 210 | else if (strcmp(str,"https") == 0) |
| 211 | *port_ptr=443; |
| 212 | else if (strcmp(str,"ssl") == 0) |
| 213 | *port_ptr=443; |
| 214 | else if (strcmp(str,"ftp") == 0) |
| 215 | *port_ptr=21; |
| 216 | else if (strcmp(str,"gopher") == 0) |
| 217 | *port_ptr=70; |
| 218 | #if 0 |
| 219 | else if (strcmp(str,"wais") == 0) |
| 220 | *port_ptr=21; |
| 221 | #endif |
| 222 | else |
| 223 | { |
| 224 | SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error()); |
| 225 | ERR_add_error_data(3,"service='",str,"'"); |
| 226 | return(0); |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | return(1); |
| 231 | } |
| 232 | |
| 233 | int BIO_sock_error(int sock) |
| 234 | { |
| 235 | int j,i; |
| 236 | int size; |
| 237 | |
| 238 | #if defined(OPENSSL_SYS_BEOS_R5) |
| 239 | return 0; |
| 240 | #endif |
| 241 | |
| 242 | size=sizeof(int); |
| 243 | /* Note: under Windows the third parameter is of type (char *) |
| 244 | * whereas under other systems it is (void *) if you don't have |
| 245 | * a cast it will choke the compiler: if you do have a cast then |
| 246 | * you can either go for (char *) or (void *). |
| 247 | */ |
| 248 | i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size); |
| 249 | if (i < 0) |
| 250 | return(1); |
| 251 | else |
| 252 | return(j); |
| 253 | } |
| 254 | |
| 255 | #if 0 |
| 256 | long BIO_ghbn_ctrl(int cmd, int iarg, char *parg) |
| 257 | { |
| 258 | int i; |
| 259 | char **p; |
| 260 | |
| 261 | switch (cmd) |
| 262 | { |
| 263 | case BIO_GHBN_CTRL_HITS: |
| 264 | return(BIO_ghbn_hits); |
| 265 | /* break; */ |
| 266 | case BIO_GHBN_CTRL_MISSES: |
| 267 | return(BIO_ghbn_miss); |
| 268 | /* break; */ |
| 269 | case BIO_GHBN_CTRL_CACHE_SIZE: |
| 270 | return(GHBN_NUM); |
| 271 | /* break; */ |
| 272 | case BIO_GHBN_CTRL_GET_ENTRY: |
| 273 | if ((iarg >= 0) && (iarg <GHBN_NUM) && |
| 274 | (ghbn_cache[iarg].order > 0)) |
| 275 | { |
| 276 | p=(char **)parg; |
| 277 | if (p == NULL) return(0); |
| 278 | *p=ghbn_cache[iarg].name; |
| 279 | ghbn_cache[iarg].name[128]='\0'; |
| 280 | return(1); |
| 281 | } |
| 282 | return(0); |
| 283 | /* break; */ |
| 284 | case BIO_GHBN_CTRL_FLUSH: |
| 285 | for (i=0; i<GHBN_NUM; i++) |
| 286 | ghbn_cache[i].order=0; |
| 287 | break; |
| 288 | default: |
| 289 | return(0); |
| 290 | } |
| 291 | return(1); |
| 292 | } |
| 293 | #endif |
| 294 | |
| 295 | #if 0 |
| 296 | static struct hostent *ghbn_dup(struct hostent *a) |
| 297 | { |
| 298 | struct hostent *ret; |
| 299 | int i,j; |
| 300 | |
| 301 | MemCheck_off(); |
| 302 | ret=(struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); |
| 303 | if (ret == NULL) return(NULL); |
| 304 | memset(ret,0,sizeof(struct hostent)); |
| 305 | |
| 306 | for (i=0; a->h_aliases[i] != NULL; i++) |
| 307 | ; |
| 308 | i++; |
| 309 | ret->h_aliases = (char **)OPENSSL_malloc(i*sizeof(char *)); |
| 310 | if (ret->h_aliases == NULL) |
| 311 | goto err; |
| 312 | memset(ret->h_aliases, 0, i*sizeof(char *)); |
| 313 | |
| 314 | for (i=0; a->h_addr_list[i] != NULL; i++) |
| 315 | ; |
| 316 | i++; |
| 317 | ret->h_addr_list=(char **)OPENSSL_malloc(i*sizeof(char *)); |
| 318 | if (ret->h_addr_list == NULL) |
| 319 | goto err; |
| 320 | memset(ret->h_addr_list, 0, i*sizeof(char *)); |
| 321 | |
| 322 | j=strlen(a->h_name)+1; |
| 323 | if ((ret->h_name=OPENSSL_malloc(j)) == NULL) goto err; |
| 324 | memcpy((char *)ret->h_name,a->h_name,j); |
| 325 | for (i=0; a->h_aliases[i] != NULL; i++) |
| 326 | { |
| 327 | j=strlen(a->h_aliases[i])+1; |
| 328 | if ((ret->h_aliases[i]=OPENSSL_malloc(j)) == NULL) goto err; |
| 329 | memcpy(ret->h_aliases[i],a->h_aliases[i],j); |
| 330 | } |
| 331 | ret->h_length=a->h_length; |
| 332 | ret->h_addrtype=a->h_addrtype; |
| 333 | for (i=0; a->h_addr_list[i] != NULL; i++) |
| 334 | { |
| 335 | if ((ret->h_addr_list[i]=OPENSSL_malloc(a->h_length)) == NULL) |
| 336 | goto err; |
| 337 | memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length); |
| 338 | } |
| 339 | if (0) |
| 340 | { |
| 341 | err: |
| 342 | if (ret != NULL) |
| 343 | ghbn_free(ret); |
| 344 | ret=NULL; |
| 345 | } |
| 346 | MemCheck_on(); |
| 347 | return(ret); |
| 348 | } |
| 349 | |
| 350 | static void ghbn_free(struct hostent *a) |
| 351 | { |
| 352 | int i; |
| 353 | |
| 354 | if(a == NULL) |
| 355 | return; |
| 356 | |
| 357 | if (a->h_aliases != NULL) |
| 358 | { |
| 359 | for (i=0; a->h_aliases[i] != NULL; i++) |
| 360 | OPENSSL_free(a->h_aliases[i]); |
| 361 | OPENSSL_free(a->h_aliases); |
| 362 | } |
| 363 | if (a->h_addr_list != NULL) |
| 364 | { |
| 365 | for (i=0; a->h_addr_list[i] != NULL; i++) |
| 366 | OPENSSL_free(a->h_addr_list[i]); |
| 367 | OPENSSL_free(a->h_addr_list); |
| 368 | } |
| 369 | if (a->h_name != NULL) OPENSSL_free(a->h_name); |
| 370 | OPENSSL_free(a); |
| 371 | } |
| 372 | |
| 373 | #endif |
| 374 | |
| 375 | struct hostent *BIO_gethostbyname(const char *name) |
| 376 | { |
| 377 | #if 1 |
| 378 | /* Caching gethostbyname() results forever is wrong, |
| 379 | * so we have to let the true gethostbyname() worry about this */ |
| 380 | #if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__)) |
| 381 | return gethostbyname((char*)name); |
| 382 | #else |
| 383 | return gethostbyname(name); |
| 384 | #endif |
| 385 | #else |
| 386 | struct hostent *ret; |
| 387 | int i,lowi=0,j; |
| 388 | unsigned long low= (unsigned long)-1; |
| 389 | |
| 390 | |
| 391 | # if 0 |
| 392 | /* It doesn't make sense to use locking here: The function interface |
| 393 | * is not thread-safe, because threads can never be sure when |
| 394 | * some other thread destroys the data they were given a pointer to. |
| 395 | */ |
| 396 | CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); |
| 397 | # endif |
| 398 | j=strlen(name); |
| 399 | if (j < 128) |
| 400 | { |
| 401 | for (i=0; i<GHBN_NUM; i++) |
| 402 | { |
| 403 | if (low > ghbn_cache[i].order) |
| 404 | { |
| 405 | low=ghbn_cache[i].order; |
| 406 | lowi=i; |
| 407 | } |
| 408 | if (ghbn_cache[i].order > 0) |
| 409 | { |
| 410 | if (strncmp(name,ghbn_cache[i].name,128) == 0) |
| 411 | break; |
| 412 | } |
| 413 | } |
| 414 | } |
| 415 | else |
| 416 | i=GHBN_NUM; |
| 417 | |
| 418 | if (i == GHBN_NUM) /* no hit*/ |
| 419 | { |
| 420 | BIO_ghbn_miss++; |
| 421 | /* Note: under VMS with SOCKETSHR, it seems like the first |
| 422 | * parameter is 'char *', instead of 'const char *' |
| 423 | */ |
| 424 | # ifndef CONST_STRICT |
| 425 | ret=gethostbyname((char *)name); |
| 426 | # else |
| 427 | ret=gethostbyname(name); |
| 428 | # endif |
| 429 | |
| 430 | if (ret == NULL) |
| 431 | goto end; |
| 432 | if (j > 128) /* too big to cache */ |
| 433 | { |
| 434 | # if 0 |
| 435 | /* If we were trying to make this function thread-safe (which |
| 436 | * is bound to fail), we'd have to give up in this case |
| 437 | * (or allocate more memory). */ |
| 438 | ret = NULL; |
| 439 | # endif |
| 440 | goto end; |
| 441 | } |
| 442 | |
| 443 | /* else add to cache */ |
| 444 | if (ghbn_cache[lowi].ent != NULL) |
| 445 | ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ |
| 446 | ghbn_cache[lowi].name[0] = '\0'; |
| 447 | |
| 448 | if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL) |
| 449 | { |
| 450 | BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE); |
| 451 | goto end; |
| 452 | } |
| 453 | strncpy(ghbn_cache[lowi].name,name,128); |
| 454 | ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits; |
| 455 | } |
| 456 | else |
| 457 | { |
| 458 | BIO_ghbn_hits++; |
| 459 | ret= ghbn_cache[i].ent; |
| 460 | ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits; |
| 461 | } |
| 462 | end: |
| 463 | # if 0 |
| 464 | CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); |
| 465 | # endif |
| 466 | return(ret); |
| 467 | #endif |
| 468 | } |
| 469 | |
| 470 | |
| 471 | int BIO_sock_init(void) |
| 472 | { |
| 473 | #ifdef OPENSSL_SYS_WINDOWS |
| 474 | static struct WSAData wsa_state; |
| 475 | |
| 476 | if (!wsa_init_done) |
| 477 | { |
| 478 | int err; |
| 479 | |
| 480 | wsa_init_done=1; |
| 481 | memset(&wsa_state,0,sizeof(wsa_state)); |
| 482 | /* Not making wsa_state available to the rest of the |
| 483 | * code is formally wrong. But the structures we use |
| 484 | * are [beleived to be] invariable among Winsock DLLs, |
| 485 | * while API availability is [expected to be] probed |
| 486 | * at run-time with DSO_global_lookup. */ |
| 487 | if (WSAStartup(0x0202,&wsa_state)!=0) |
| 488 | { |
| 489 | err=WSAGetLastError(); |
| 490 | SYSerr(SYS_F_WSASTARTUP,err); |
| 491 | BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); |
| 492 | return(-1); |
| 493 | } |
| 494 | } |
| 495 | #endif /* OPENSSL_SYS_WINDOWS */ |
| 496 | #ifdef WATT32 |
| 497 | extern int _watt_do_exit; |
| 498 | _watt_do_exit = 0; /* don't make sock_init() call exit() */ |
| 499 | if (sock_init()) |
| 500 | return (-1); |
| 501 | #endif |
| 502 | |
| 503 | #if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| 504 | WORD wVerReq; |
| 505 | WSADATA wsaData; |
| 506 | int err; |
| 507 | |
| 508 | if (!wsa_init_done) |
| 509 | { |
| 510 | wsa_init_done=1; |
| 511 | wVerReq = MAKEWORD( 2, 0 ); |
| 512 | err = WSAStartup(wVerReq,&wsaData); |
| 513 | if (err != 0) |
| 514 | { |
| 515 | SYSerr(SYS_F_WSASTARTUP,err); |
| 516 | BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); |
| 517 | return(-1); |
| 518 | } |
| 519 | } |
| 520 | #endif |
| 521 | |
| 522 | return(1); |
| 523 | } |
| 524 | |
| 525 | void BIO_sock_cleanup(void) |
| 526 | { |
| 527 | #ifdef OPENSSL_SYS_WINDOWS |
| 528 | if (wsa_init_done) |
| 529 | { |
| 530 | wsa_init_done=0; |
| 531 | #if 0 /* this call is claimed to be non-present in Winsock2 */ |
| 532 | WSACancelBlockingCall(); |
| 533 | #endif |
| 534 | WSACleanup(); |
| 535 | } |
| 536 | #elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| 537 | if (wsa_init_done) |
| 538 | { |
| 539 | wsa_init_done=0; |
| 540 | WSACleanup(); |
| 541 | } |
| 542 | #endif |
| 543 | } |
| 544 | |
| 545 | #if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000 |
| 546 | |
| 547 | int BIO_socket_ioctl(int fd, long type, void *arg) |
| 548 | { |
| 549 | int i; |
| 550 | |
| 551 | #ifdef __DJGPP__ |
| 552 | i=ioctlsocket(fd,type,(char *)arg); |
| 553 | #else |
| 554 | # if defined(OPENSSL_SYS_VMS) |
| 555 | /* 2011-02-18 SMS. |
| 556 | * VMS ioctl() can't tolerate a 64-bit "void *arg", but we |
| 557 | * observe that all the consumers pass in an "unsigned long *", |
| 558 | * so we arrange a local copy with a short pointer, and use |
| 559 | * that, instead. |
| 560 | */ |
| 561 | # if __INITIAL_POINTER_SIZE == 64 |
| 562 | # define ARG arg_32p |
| 563 | # pragma pointer_size save |
| 564 | # pragma pointer_size 32 |
| 565 | unsigned long arg_32; |
| 566 | unsigned long *arg_32p; |
| 567 | # pragma pointer_size restore |
| 568 | arg_32p = &arg_32; |
| 569 | arg_32 = *((unsigned long *) arg); |
| 570 | # else /* __INITIAL_POINTER_SIZE == 64 */ |
| 571 | # define ARG arg |
| 572 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
| 573 | # else /* defined(OPENSSL_SYS_VMS) */ |
| 574 | # define ARG arg |
| 575 | # endif /* defined(OPENSSL_SYS_VMS) [else] */ |
| 576 | |
| 577 | i=ioctlsocket(fd,type,ARG); |
| 578 | #endif /* __DJGPP__ */ |
| 579 | if (i < 0) |
| 580 | SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error()); |
| 581 | return(i); |
| 582 | } |
| 583 | #endif /* __VMS_VER */ |
| 584 | |
| 585 | /* The reason I have implemented this instead of using sscanf is because |
| 586 | * Visual C 1.52c gives an unresolved external when linking a DLL :-( */ |
| 587 | static int get_ip(const char *str, unsigned char ip[4]) |
| 588 | { |
| 589 | unsigned int tmp[4]; |
| 590 | int num=0,c,ok=0; |
| 591 | |
| 592 | tmp[0]=tmp[1]=tmp[2]=tmp[3]=0; |
| 593 | |
| 594 | for (;;) |
| 595 | { |
| 596 | c= *(str++); |
| 597 | if ((c >= '0') && (c <= '9')) |
| 598 | { |
| 599 | ok=1; |
| 600 | tmp[num]=tmp[num]*10+c-'0'; |
| 601 | if (tmp[num] > 255) return(0); |
| 602 | } |
| 603 | else if (c == '.') |
| 604 | { |
| 605 | if (!ok) return(-1); |
| 606 | if (num == 3) return(0); |
| 607 | num++; |
| 608 | ok=0; |
| 609 | } |
| 610 | else if (c == '\0' && (num == 3) && ok) |
| 611 | break; |
| 612 | else |
| 613 | return(0); |
| 614 | } |
| 615 | ip[0]=tmp[0]; |
| 616 | ip[1]=tmp[1]; |
| 617 | ip[2]=tmp[2]; |
| 618 | ip[3]=tmp[3]; |
| 619 | return(1); |
| 620 | } |
| 621 | |
| 622 | int BIO_get_accept_socket(char *host, int bind_mode) |
| 623 | { |
| 624 | int ret=0; |
| 625 | union { |
| 626 | struct sockaddr sa; |
| 627 | struct sockaddr_in sa_in; |
| 628 | #if OPENSSL_USE_IPV6 |
| 629 | struct sockaddr_in6 sa_in6; |
| 630 | #endif |
| 631 | } server,client; |
| 632 | int s=INVALID_SOCKET,cs,addrlen; |
| 633 | unsigned char ip[4]; |
| 634 | unsigned short port; |
| 635 | char *str=NULL,*e; |
| 636 | char *h,*p; |
| 637 | unsigned long l; |
| 638 | int err_num; |
| 639 | |
| 640 | if (BIO_sock_init() != 1) return(INVALID_SOCKET); |
| 641 | |
| 642 | if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET); |
| 643 | |
| 644 | h=p=NULL; |
| 645 | h=str; |
| 646 | for (e=str; *e; e++) |
| 647 | { |
| 648 | if (*e == ':') |
| 649 | { |
| 650 | p=e; |
| 651 | } |
| 652 | else if (*e == '/') |
| 653 | { |
| 654 | *e='\0'; |
| 655 | break; |
| 656 | } |
| 657 | } |
| 658 | if (p) *p++='\0'; /* points at last ':', '::port' is special [see below] */ |
| 659 | else p=h,h=NULL; |
| 660 | |
| 661 | #ifdef EAI_FAMILY |
| 662 | do { |
| 663 | static union { void *p; |
| 664 | int (WSAAPI *f)(const char *,const char *, |
| 665 | const struct addrinfo *, |
| 666 | struct addrinfo **); |
| 667 | } p_getaddrinfo = {NULL}; |
| 668 | static union { void *p; |
| 669 | void (WSAAPI *f)(struct addrinfo *); |
| 670 | } p_freeaddrinfo = {NULL}; |
| 671 | struct addrinfo *res,hint; |
| 672 | |
| 673 | if (p_getaddrinfo.p==NULL) |
| 674 | { |
| 675 | if ((p_getaddrinfo.p=DSO_global_lookup("getaddrinfo"))==NULL || |
| 676 | (p_freeaddrinfo.p=DSO_global_lookup("freeaddrinfo"))==NULL) |
| 677 | p_getaddrinfo.p=(void*)-1; |
| 678 | } |
| 679 | if (p_getaddrinfo.p==(void *)-1) break; |
| 680 | |
| 681 | /* '::port' enforces IPv6 wildcard listener. Some OSes, |
| 682 | * e.g. Solaris, default to IPv6 without any hint. Also |
| 683 | * note that commonly IPv6 wildchard socket can service |
| 684 | * IPv4 connections just as well... */ |
| 685 | memset(&hint,0,sizeof(hint)); |
| 686 | hint.ai_flags = AI_PASSIVE; |
| 687 | if (h) |
| 688 | { |
| 689 | if (strchr(h,':')) |
| 690 | { |
| 691 | if (h[1]=='\0') h=NULL; |
| 692 | #if OPENSSL_USE_IPV6 |
| 693 | hint.ai_family = AF_INET6; |
| 694 | #else |
| 695 | h=NULL; |
| 696 | #endif |
| 697 | } |
| 698 | else if (h[0]=='*' && h[1]=='\0') |
| 699 | { |
| 700 | hint.ai_family = AF_INET; |
| 701 | h=NULL; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | if ((*p_getaddrinfo.f)(h,p,&hint,&res)) break; |
| 706 | |
| 707 | addrlen = res->ai_addrlen<=sizeof(server) ? |
| 708 | res->ai_addrlen : |
| 709 | sizeof(server); |
| 710 | memcpy(&server, res->ai_addr, addrlen); |
| 711 | |
| 712 | (*p_freeaddrinfo.f)(res); |
| 713 | goto again; |
| 714 | } while (0); |
| 715 | #endif |
| 716 | |
| 717 | if (!BIO_get_port(p,&port)) goto err; |
| 718 | |
| 719 | memset((char *)&server,0,sizeof(server)); |
| 720 | server.sa_in.sin_family=AF_INET; |
| 721 | server.sa_in.sin_port=htons(port); |
| 722 | addrlen = sizeof(server.sa_in); |
| 723 | |
| 724 | if (h == NULL || strcmp(h,"*") == 0) |
| 725 | server.sa_in.sin_addr.s_addr=INADDR_ANY; |
| 726 | else |
| 727 | { |
| 728 | if (!BIO_get_host_ip(h,&(ip[0]))) goto err; |
| 729 | l=(unsigned long) |
| 730 | ((unsigned long)ip[0]<<24L)| |
| 731 | ((unsigned long)ip[1]<<16L)| |
| 732 | ((unsigned long)ip[2]<< 8L)| |
| 733 | ((unsigned long)ip[3]); |
| 734 | server.sa_in.sin_addr.s_addr=htonl(l); |
| 735 | } |
| 736 | |
| 737 | again: |
| 738 | s=socket(server.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL); |
| 739 | if (s == INVALID_SOCKET) |
| 740 | { |
| 741 | SYSerr(SYS_F_SOCKET,get_last_socket_error()); |
| 742 | ERR_add_error_data(3,"port='",host,"'"); |
| 743 | BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET); |
| 744 | goto err; |
| 745 | } |
| 746 | |
| 747 | #ifdef SO_REUSEADDR |
| 748 | if (bind_mode == BIO_BIND_REUSEADDR) |
| 749 | { |
| 750 | int i=1; |
| 751 | |
| 752 | ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i)); |
| 753 | bind_mode=BIO_BIND_NORMAL; |
| 754 | } |
| 755 | #endif |
| 756 | if (bind(s,&server.sa,addrlen) == -1) |
| 757 | { |
| 758 | #ifdef SO_REUSEADDR |
| 759 | err_num=get_last_socket_error(); |
| 760 | if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) && |
| 761 | #ifdef OPENSSL_SYS_WINDOWS |
| 762 | /* Some versions of Windows define EADDRINUSE to |
| 763 | * a dummy value. |
| 764 | */ |
| 765 | (err_num == WSAEADDRINUSE)) |
| 766 | #else |
| 767 | (err_num == EADDRINUSE)) |
| 768 | #endif |
| 769 | { |
| 770 | client = server; |
| 771 | if (h == NULL || strcmp(h,"*") == 0) |
| 772 | { |
| 773 | #if OPENSSL_USE_IPV6 |
| 774 | if (client.sa.sa_family == AF_INET6) |
| 775 | { |
| 776 | memset(&client.sa_in6.sin6_addr,0,sizeof(client.sa_in6.sin6_addr)); |
| 777 | client.sa_in6.sin6_addr.s6_addr[15]=1; |
| 778 | } |
| 779 | else |
| 780 | #endif |
| 781 | if (client.sa.sa_family == AF_INET) |
| 782 | { |
| 783 | client.sa_in.sin_addr.s_addr=htonl(0x7F000001); |
| 784 | } |
| 785 | else goto err; |
| 786 | } |
| 787 | cs=socket(client.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL); |
| 788 | if (cs != INVALID_SOCKET) |
| 789 | { |
| 790 | int ii; |
| 791 | ii=connect(cs,&client.sa,addrlen); |
| 792 | closesocket(cs); |
| 793 | if (ii == INVALID_SOCKET) |
| 794 | { |
| 795 | bind_mode=BIO_BIND_REUSEADDR; |
| 796 | closesocket(s); |
| 797 | goto again; |
| 798 | } |
| 799 | /* else error */ |
| 800 | } |
| 801 | /* else error */ |
| 802 | } |
| 803 | #endif |
| 804 | SYSerr(SYS_F_BIND,err_num); |
| 805 | ERR_add_error_data(3,"port='",host,"'"); |
| 806 | BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET); |
| 807 | goto err; |
| 808 | } |
| 809 | if (listen(s,MAX_LISTEN) == -1) |
| 810 | { |
| 811 | SYSerr(SYS_F_BIND,get_last_socket_error()); |
| 812 | ERR_add_error_data(3,"port='",host,"'"); |
| 813 | BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET); |
| 814 | goto err; |
| 815 | } |
| 816 | ret=1; |
| 817 | err: |
| 818 | if (str != NULL) OPENSSL_free(str); |
| 819 | if ((ret == 0) && (s != INVALID_SOCKET)) |
| 820 | { |
| 821 | closesocket(s); |
| 822 | s= INVALID_SOCKET; |
| 823 | } |
| 824 | return(s); |
| 825 | } |
| 826 | |
| 827 | int BIO_accept(int sock, char **addr) |
| 828 | { |
| 829 | int ret=INVALID_SOCKET; |
| 830 | unsigned long l; |
| 831 | unsigned short port; |
| 832 | char *p; |
| 833 | |
| 834 | struct { |
| 835 | /* |
| 836 | * As for following union. Trouble is that there are platforms |
| 837 | * that have socklen_t and there are platforms that don't, on |
| 838 | * some platforms socklen_t is int and on some size_t. So what |
| 839 | * one can do? One can cook #ifdef spaghetti, which is nothing |
| 840 | * but masochistic. Or one can do union between int and size_t. |
| 841 | * One naturally does it primarily for 64-bit platforms where |
| 842 | * sizeof(int) != sizeof(size_t). But would it work? Note that |
| 843 | * if size_t member is initialized to 0, then later int member |
| 844 | * assignment naturally does the job on little-endian platforms |
| 845 | * regardless accept's expectations! What about big-endians? |
| 846 | * If accept expects int*, then it works, and if size_t*, then |
| 847 | * length value would appear as unreasonably large. But this |
| 848 | * won't prevent it from filling in the address structure. The |
| 849 | * trouble of course would be if accept returns more data than |
| 850 | * actual buffer can accomodate and overwrite stack... That's |
| 851 | * where early OPENSSL_assert comes into picture. Besides, the |
| 852 | * only 64-bit big-endian platform found so far that expects |
| 853 | * size_t* is HP-UX, where stack grows towards higher address. |
| 854 | * <appro> |
| 855 | */ |
| 856 | union { size_t s; int i; } len; |
| 857 | union { |
| 858 | struct sockaddr sa; |
| 859 | struct sockaddr_in sa_in; |
| 860 | #if OPENSSL_USE_IPV6 |
| 861 | struct sockaddr_in6 sa_in6; |
| 862 | #endif |
| 863 | } from; |
| 864 | } sa; |
| 865 | |
| 866 | sa.len.s=0; |
| 867 | sa.len.i=sizeof(sa.from); |
| 868 | memset(&sa.from,0,sizeof(sa.from)); |
| 869 | ret=accept(sock,&sa.from.sa,(void *)&sa.len); |
| 870 | if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0) |
| 871 | { |
| 872 | OPENSSL_assert(sa.len.s<=sizeof(sa.from)); |
| 873 | sa.len.i = (int)sa.len.s; |
| 874 | /* use sa.len.i from this point */ |
| 875 | } |
| 876 | if (ret == INVALID_SOCKET) |
| 877 | { |
| 878 | if(BIO_sock_should_retry(ret)) return -2; |
| 879 | SYSerr(SYS_F_ACCEPT,get_last_socket_error()); |
| 880 | BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR); |
| 881 | goto end; |
| 882 | } |
| 883 | |
| 884 | if (addr == NULL) goto end; |
| 885 | |
| 886 | #ifdef EAI_FAMILY |
| 887 | do { |
| 888 | char h[NI_MAXHOST],s[NI_MAXSERV]; |
| 889 | size_t nl; |
| 890 | static union { void *p; |
| 891 | int (WSAAPI *f)(const struct sockaddr *,size_t/*socklen_t*/, |
| 892 | char *,size_t,char *,size_t,int); |
| 893 | } p_getnameinfo = {NULL}; |
| 894 | /* 2nd argument to getnameinfo is specified to |
| 895 | * be socklen_t. Unfortunately there is a number |
| 896 | * of environments where socklen_t is not defined. |
| 897 | * As it's passed by value, it's safe to pass it |
| 898 | * as size_t... <appro> */ |
| 899 | |
| 900 | if (p_getnameinfo.p==NULL) |
| 901 | { |
| 902 | if ((p_getnameinfo.p=DSO_global_lookup("getnameinfo"))==NULL) |
| 903 | p_getnameinfo.p=(void*)-1; |
| 904 | } |
| 905 | if (p_getnameinfo.p==(void *)-1) break; |
| 906 | |
| 907 | if ((*p_getnameinfo.f)(&sa.from.sa,sa.len.i,h,sizeof(h),s,sizeof(s), |
| 908 | NI_NUMERICHOST|NI_NUMERICSERV)) break; |
| 909 | nl = strlen(h)+strlen(s)+2; |
| 910 | p = *addr; |
| 911 | if (p) { *p = '\0'; p = OPENSSL_realloc(p,nl); } |
| 912 | else { p = OPENSSL_malloc(nl); } |
| 913 | if (p==NULL) |
| 914 | { |
| 915 | BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); |
| 916 | goto end; |
| 917 | } |
| 918 | *addr = p; |
| 919 | BIO_snprintf(*addr,nl,"%s:%s",h,s); |
| 920 | goto end; |
| 921 | } while(0); |
| 922 | #endif |
| 923 | if (sa.from.sa.sa_family != AF_INET) goto end; |
| 924 | l=ntohl(sa.from.sa_in.sin_addr.s_addr); |
| 925 | port=ntohs(sa.from.sa_in.sin_port); |
| 926 | if (*addr == NULL) |
| 927 | { |
| 928 | if ((p=OPENSSL_malloc(24)) == NULL) |
| 929 | { |
| 930 | BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); |
| 931 | goto end; |
| 932 | } |
| 933 | *addr=p; |
| 934 | } |
| 935 | BIO_snprintf(*addr,24,"%d.%d.%d.%d:%d", |
| 936 | (unsigned char)(l>>24L)&0xff, |
| 937 | (unsigned char)(l>>16L)&0xff, |
| 938 | (unsigned char)(l>> 8L)&0xff, |
| 939 | (unsigned char)(l )&0xff, |
| 940 | port); |
| 941 | end: |
| 942 | return(ret); |
| 943 | } |
| 944 | |
| 945 | int BIO_set_tcp_ndelay(int s, int on) |
| 946 | { |
| 947 | int ret=0; |
| 948 | #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP)) |
| 949 | int opt; |
| 950 | |
| 951 | #ifdef SOL_TCP |
| 952 | opt=SOL_TCP; |
| 953 | #else |
| 954 | #ifdef IPPROTO_TCP |
| 955 | opt=IPPROTO_TCP; |
| 956 | #endif |
| 957 | #endif |
| 958 | |
| 959 | ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on)); |
| 960 | #endif |
| 961 | return(ret == 0); |
| 962 | } |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 963 | #endif |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 964 | |
| 965 | int BIO_socket_nbio(int s, int mode) |
| 966 | { |
| 967 | int ret= -1; |
| 968 | int l; |
| 969 | |
| 970 | l=mode; |
| 971 | #ifdef FIONBIO |
| 972 | ret=BIO_socket_ioctl(s,FIONBIO,&l); |
| 973 | #endif |
| 974 | return(ret == 0); |
| 975 | } |