Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* apps/s_socket.c - socket-related functions used by s_client and s_server */ |
| 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 <string.h> |
| 62 | #include <errno.h> |
| 63 | #include <signal.h> |
| 64 | |
| 65 | #ifdef FLAT_INC |
| 66 | #include "e_os2.h" |
| 67 | #else |
| 68 | #include "../e_os2.h" |
| 69 | #endif |
| 70 | |
| 71 | /* With IPv6, it looks like Digital has mixed up the proper order of |
| 72 | recursive header file inclusion, resulting in the compiler complaining |
| 73 | that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which |
| 74 | is needed to have fileno() declared correctly... So let's define u_int */ |
| 75 | #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT) |
| 76 | #define __U_INT |
| 77 | typedef unsigned int u_int; |
| 78 | #endif |
| 79 | |
| 80 | #define USE_SOCKETS |
| 81 | #define NON_MAIN |
| 82 | #include "apps.h" |
| 83 | #undef USE_SOCKETS |
| 84 | #undef NON_MAIN |
| 85 | #include "s_apps.h" |
| 86 | #include <openssl/ssl.h> |
| 87 | |
| 88 | #ifdef FLAT_INC |
| 89 | #include "e_os.h" |
| 90 | #else |
| 91 | #include "../e_os.h" |
| 92 | #endif |
| 93 | |
| 94 | #ifndef OPENSSL_NO_SOCK |
| 95 | |
| 96 | #if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) |
| 97 | #include "netdb.h" |
| 98 | #endif |
| 99 | |
| 100 | static struct hostent *GetHostByName(char *name); |
| 101 | #if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| 102 | static void ssl_sock_cleanup(void); |
| 103 | #endif |
| 104 | static int ssl_sock_init(void); |
| 105 | static int init_client_ip(int *sock,unsigned char ip[4], int port, int type); |
| 106 | static int init_server(int *sock, int port, int type); |
| 107 | static int init_server_long(int *sock, int port,char *ip, int type); |
| 108 | static int do_accept(int acc_sock, int *sock, char **host); |
| 109 | static int host_ip(char *str, unsigned char ip[4]); |
| 110 | |
| 111 | #ifdef OPENSSL_SYS_WIN16 |
| 112 | #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */ |
| 113 | #else |
| 114 | #define SOCKET_PROTOCOL IPPROTO_TCP |
| 115 | #endif |
| 116 | |
| 117 | #if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| 118 | static int wsa_init_done=0; |
| 119 | #endif |
| 120 | |
| 121 | #ifdef OPENSSL_SYS_WINDOWS |
| 122 | static struct WSAData wsa_state; |
| 123 | static int wsa_init_done=0; |
| 124 | |
| 125 | #ifdef OPENSSL_SYS_WIN16 |
| 126 | static HWND topWnd=0; |
| 127 | static FARPROC lpTopWndProc=NULL; |
| 128 | static FARPROC lpTopHookProc=NULL; |
| 129 | extern HINSTANCE _hInstance; /* nice global CRT provides */ |
| 130 | |
| 131 | static LONG FAR PASCAL topHookProc(HWND hwnd, UINT message, WPARAM wParam, |
| 132 | LPARAM lParam) |
| 133 | { |
| 134 | if (hwnd == topWnd) |
| 135 | { |
| 136 | switch(message) |
| 137 | { |
| 138 | case WM_DESTROY: |
| 139 | case WM_CLOSE: |
| 140 | SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopWndProc); |
| 141 | ssl_sock_cleanup(); |
| 142 | break; |
| 143 | } |
| 144 | } |
| 145 | return CallWindowProc(lpTopWndProc,hwnd,message,wParam,lParam); |
| 146 | } |
| 147 | |
| 148 | static BOOL CALLBACK enumproc(HWND hwnd,LPARAM lParam) |
| 149 | { |
| 150 | topWnd=hwnd; |
| 151 | return(FALSE); |
| 152 | } |
| 153 | |
| 154 | #endif /* OPENSSL_SYS_WIN32 */ |
| 155 | #endif /* OPENSSL_SYS_WINDOWS */ |
| 156 | |
| 157 | #ifdef OPENSSL_SYS_WINDOWS |
| 158 | static void ssl_sock_cleanup(void) |
| 159 | { |
| 160 | if (wsa_init_done) |
| 161 | { |
| 162 | wsa_init_done=0; |
| 163 | #ifndef OPENSSL_SYS_WINCE |
| 164 | WSACancelBlockingCall(); |
| 165 | #endif |
| 166 | WSACleanup(); |
| 167 | } |
| 168 | } |
| 169 | #elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| 170 | static void sock_cleanup(void) |
| 171 | { |
| 172 | if (wsa_init_done) |
| 173 | { |
| 174 | wsa_init_done=0; |
| 175 | WSACleanup(); |
| 176 | } |
| 177 | } |
| 178 | #endif |
| 179 | |
| 180 | static int ssl_sock_init(void) |
| 181 | { |
| 182 | #ifdef WATT32 |
| 183 | extern int _watt_do_exit; |
| 184 | _watt_do_exit = 0; |
| 185 | if (sock_init()) |
| 186 | return (0); |
| 187 | #elif defined(OPENSSL_SYS_WINDOWS) |
| 188 | if (!wsa_init_done) |
| 189 | { |
| 190 | int err; |
| 191 | |
| 192 | #ifdef SIGINT |
| 193 | signal(SIGINT,(void (*)(int))ssl_sock_cleanup); |
| 194 | #endif |
| 195 | wsa_init_done=1; |
| 196 | memset(&wsa_state,0,sizeof(wsa_state)); |
| 197 | if (WSAStartup(0x0101,&wsa_state)!=0) |
| 198 | { |
| 199 | err=WSAGetLastError(); |
| 200 | BIO_printf(bio_err,"unable to start WINSOCK, error code=%d\n",err); |
| 201 | return(0); |
| 202 | } |
| 203 | |
| 204 | #ifdef OPENSSL_SYS_WIN16 |
| 205 | EnumTaskWindows(GetCurrentTask(),enumproc,0L); |
| 206 | lpTopWndProc=(FARPROC)GetWindowLong(topWnd,GWL_WNDPROC); |
| 207 | lpTopHookProc=MakeProcInstance((FARPROC)topHookProc,_hInstance); |
| 208 | |
| 209 | SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopHookProc); |
| 210 | #endif /* OPENSSL_SYS_WIN16 */ |
| 211 | } |
| 212 | #elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| 213 | WORD wVerReq; |
| 214 | WSADATA wsaData; |
| 215 | int err; |
| 216 | |
| 217 | if (!wsa_init_done) |
| 218 | { |
| 219 | |
| 220 | # ifdef SIGINT |
| 221 | signal(SIGINT,(void (*)(int))sock_cleanup); |
| 222 | # endif |
| 223 | |
| 224 | wsa_init_done=1; |
| 225 | wVerReq = MAKEWORD( 2, 0 ); |
| 226 | err = WSAStartup(wVerReq,&wsaData); |
| 227 | if (err != 0) |
| 228 | { |
| 229 | BIO_printf(bio_err,"unable to start WINSOCK2, error code=%d\n",err); |
| 230 | return(0); |
| 231 | } |
| 232 | } |
| 233 | #endif /* OPENSSL_SYS_WINDOWS */ |
| 234 | return(1); |
| 235 | } |
| 236 | |
| 237 | int init_client(int *sock, char *host, int port, int type) |
| 238 | { |
| 239 | unsigned char ip[4]; |
| 240 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 241 | if (!host_ip(host,&(ip[0]))) |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 242 | { |
| 243 | return(0); |
| 244 | } |
| 245 | return(init_client_ip(sock,ip,port,type)); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | static int init_client_ip(int *sock, unsigned char ip[4], int port, int type) |
| 249 | { |
| 250 | unsigned long addr; |
| 251 | struct sockaddr_in them; |
| 252 | int s,i; |
| 253 | |
| 254 | if (!ssl_sock_init()) return(0); |
| 255 | |
| 256 | memset((char *)&them,0,sizeof(them)); |
| 257 | them.sin_family=AF_INET; |
| 258 | them.sin_port=htons((unsigned short)port); |
| 259 | addr=(unsigned long) |
| 260 | ((unsigned long)ip[0]<<24L)| |
| 261 | ((unsigned long)ip[1]<<16L)| |
| 262 | ((unsigned long)ip[2]<< 8L)| |
| 263 | ((unsigned long)ip[3]); |
| 264 | them.sin_addr.s_addr=htonl(addr); |
| 265 | |
| 266 | if (type == SOCK_STREAM) |
| 267 | s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL); |
| 268 | else /* ( type == SOCK_DGRAM) */ |
| 269 | s=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP); |
| 270 | |
| 271 | if (s == INVALID_SOCKET) { perror("socket"); return(0); } |
| 272 | |
| 273 | #if defined(SO_KEEPALIVE) && !defined(OPENSSL_SYS_MPE) |
| 274 | if (type == SOCK_STREAM) |
| 275 | { |
| 276 | i=0; |
| 277 | i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i)); |
| 278 | if (i < 0) { perror("keepalive"); return(0); } |
| 279 | } |
| 280 | #endif |
| 281 | |
| 282 | if (connect(s,(struct sockaddr *)&them,sizeof(them)) == -1) |
| 283 | { closesocket(s); perror("connect"); return(0); } |
| 284 | *sock=s; |
| 285 | return(1); |
| 286 | } |
| 287 | |
| 288 | int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, unsigned char *context), unsigned char *context) |
| 289 | { |
| 290 | int sock; |
| 291 | char *name = NULL; |
| 292 | int accept_socket = 0; |
| 293 | int i; |
| 294 | |
| 295 | if (!init_server(&accept_socket,port,type)) return(0); |
| 296 | |
| 297 | if (ret != NULL) |
| 298 | { |
| 299 | *ret=accept_socket; |
| 300 | /* return(1);*/ |
| 301 | } |
| 302 | for (;;) |
| 303 | { |
| 304 | if (type==SOCK_STREAM) |
| 305 | { |
| 306 | if (do_accept(accept_socket,&sock,&name) == 0) |
| 307 | { |
| 308 | SHUTDOWN(accept_socket); |
| 309 | return(0); |
| 310 | } |
| 311 | } |
| 312 | else |
| 313 | sock = accept_socket; |
| 314 | i=(*cb)(name,sock, context); |
| 315 | if (name != NULL) OPENSSL_free(name); |
| 316 | if (type==SOCK_STREAM) |
| 317 | SHUTDOWN2(sock); |
| 318 | if (i < 0) |
| 319 | { |
| 320 | SHUTDOWN2(accept_socket); |
| 321 | return(i); |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | static int init_server_long(int *sock, int port, char *ip, int type) |
| 327 | { |
| 328 | int ret=0; |
| 329 | struct sockaddr_in server; |
| 330 | int s= -1; |
| 331 | |
| 332 | if (!ssl_sock_init()) return(0); |
| 333 | |
| 334 | memset((char *)&server,0,sizeof(server)); |
| 335 | server.sin_family=AF_INET; |
| 336 | server.sin_port=htons((unsigned short)port); |
| 337 | if (ip == NULL) |
| 338 | server.sin_addr.s_addr=INADDR_ANY; |
| 339 | else |
| 340 | /* Added for T3E, address-of fails on bit field (beckman@acl.lanl.gov) */ |
| 341 | #ifndef BIT_FIELD_LIMITS |
| 342 | memcpy(&server.sin_addr.s_addr,ip,4); |
| 343 | #else |
| 344 | memcpy(&server.sin_addr,ip,4); |
| 345 | #endif |
| 346 | |
| 347 | if (type == SOCK_STREAM) |
| 348 | s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL); |
| 349 | else /* type == SOCK_DGRAM */ |
| 350 | s=socket(AF_INET, SOCK_DGRAM,IPPROTO_UDP); |
| 351 | |
| 352 | if (s == INVALID_SOCKET) goto err; |
| 353 | #if defined SOL_SOCKET && defined SO_REUSEADDR |
| 354 | { |
| 355 | int j = 1; |
| 356 | setsockopt(s, SOL_SOCKET, SO_REUSEADDR, |
| 357 | (void *) &j, sizeof j); |
| 358 | } |
| 359 | #endif |
| 360 | if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1) |
| 361 | { |
| 362 | #ifndef OPENSSL_SYS_WINDOWS |
| 363 | perror("bind"); |
| 364 | #endif |
| 365 | goto err; |
| 366 | } |
| 367 | /* Make it 128 for linux */ |
| 368 | if (type==SOCK_STREAM && listen(s,128) == -1) goto err; |
| 369 | *sock=s; |
| 370 | ret=1; |
| 371 | err: |
| 372 | if ((ret == 0) && (s != -1)) |
| 373 | { |
| 374 | SHUTDOWN(s); |
| 375 | } |
| 376 | return(ret); |
| 377 | } |
| 378 | |
| 379 | static int init_server(int *sock, int port, int type) |
| 380 | { |
| 381 | return(init_server_long(sock, port, NULL, type)); |
| 382 | } |
| 383 | |
| 384 | static int do_accept(int acc_sock, int *sock, char **host) |
| 385 | { |
| 386 | int ret; |
| 387 | struct hostent *h1,*h2; |
| 388 | static struct sockaddr_in from; |
| 389 | int len; |
| 390 | /* struct linger ling; */ |
| 391 | |
| 392 | if (!ssl_sock_init()) return(0); |
| 393 | |
| 394 | #ifndef OPENSSL_SYS_WINDOWS |
| 395 | redoit: |
| 396 | #endif |
| 397 | |
| 398 | memset((char *)&from,0,sizeof(from)); |
| 399 | len=sizeof(from); |
| 400 | /* Note: under VMS with SOCKETSHR the fourth parameter is currently |
| 401 | * of type (int *) whereas under other systems it is (void *) if |
| 402 | * you don't have a cast it will choke the compiler: if you do |
| 403 | * have a cast then you can either go for (int *) or (void *). |
| 404 | */ |
| 405 | ret=accept(acc_sock,(struct sockaddr *)&from,(void *)&len); |
| 406 | if (ret == INVALID_SOCKET) |
| 407 | { |
| 408 | #if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| 409 | int i; |
| 410 | i=WSAGetLastError(); |
| 411 | BIO_printf(bio_err,"accept error %d\n",i); |
| 412 | #else |
| 413 | if (errno == EINTR) |
| 414 | { |
| 415 | /*check_timeout(); */ |
| 416 | goto redoit; |
| 417 | } |
| 418 | fprintf(stderr,"errno=%d ",errno); |
| 419 | perror("accept"); |
| 420 | #endif |
| 421 | return(0); |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | ling.l_onoff=1; |
| 426 | ling.l_linger=0; |
| 427 | i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling)); |
| 428 | if (i < 0) { perror("linger"); return(0); } |
| 429 | i=0; |
| 430 | i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i)); |
| 431 | if (i < 0) { perror("keepalive"); return(0); } |
| 432 | */ |
| 433 | |
| 434 | if (host == NULL) goto end; |
| 435 | #ifndef BIT_FIELD_LIMITS |
| 436 | /* I should use WSAAsyncGetHostByName() under windows */ |
| 437 | h1=gethostbyaddr((char *)&from.sin_addr.s_addr, |
| 438 | sizeof(from.sin_addr.s_addr),AF_INET); |
| 439 | #else |
| 440 | h1=gethostbyaddr((char *)&from.sin_addr, |
| 441 | sizeof(struct in_addr),AF_INET); |
| 442 | #endif |
| 443 | if (h1 == NULL) |
| 444 | { |
| 445 | BIO_printf(bio_err,"bad gethostbyaddr\n"); |
| 446 | *host=NULL; |
| 447 | /* return(0); */ |
| 448 | } |
| 449 | else |
| 450 | { |
| 451 | if ((*host=(char *)OPENSSL_malloc(strlen(h1->h_name)+1)) == NULL) |
| 452 | { |
| 453 | perror("OPENSSL_malloc"); |
| 454 | return(0); |
| 455 | } |
| 456 | BUF_strlcpy(*host,h1->h_name,strlen(h1->h_name)+1); |
| 457 | |
| 458 | h2=GetHostByName(*host); |
| 459 | if (h2 == NULL) |
| 460 | { |
| 461 | BIO_printf(bio_err,"gethostbyname failure\n"); |
| 462 | return(0); |
| 463 | } |
| 464 | if (h2->h_addrtype != AF_INET) |
| 465 | { |
| 466 | BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n"); |
| 467 | return(0); |
| 468 | } |
| 469 | } |
| 470 | end: |
| 471 | *sock=ret; |
| 472 | return(1); |
| 473 | } |
| 474 | |
| 475 | int extract_host_port(char *str, char **host_ptr, unsigned char *ip, |
| 476 | short *port_ptr) |
| 477 | { |
| 478 | char *h,*p; |
| 479 | |
| 480 | h=str; |
| 481 | p=strchr(str,':'); |
| 482 | if (p == NULL) |
| 483 | { |
| 484 | BIO_printf(bio_err,"no port defined\n"); |
| 485 | return(0); |
| 486 | } |
| 487 | *(p++)='\0'; |
| 488 | |
| 489 | if ((ip != NULL) && !host_ip(str,ip)) |
| 490 | goto err; |
| 491 | if (host_ptr != NULL) *host_ptr=h; |
| 492 | |
| 493 | if (!extract_port(p,port_ptr)) |
| 494 | goto err; |
| 495 | return(1); |
| 496 | err: |
| 497 | return(0); |
| 498 | } |
| 499 | |
| 500 | static int host_ip(char *str, unsigned char ip[4]) |
| 501 | { |
| 502 | unsigned int in[4]; |
| 503 | int i; |
| 504 | |
| 505 | if (sscanf(str,"%u.%u.%u.%u",&(in[0]),&(in[1]),&(in[2]),&(in[3])) == 4) |
| 506 | { |
| 507 | for (i=0; i<4; i++) |
| 508 | if (in[i] > 255) |
| 509 | { |
| 510 | BIO_printf(bio_err,"invalid IP address\n"); |
| 511 | goto err; |
| 512 | } |
| 513 | ip[0]=in[0]; |
| 514 | ip[1]=in[1]; |
| 515 | ip[2]=in[2]; |
| 516 | ip[3]=in[3]; |
| 517 | } |
| 518 | else |
| 519 | { /* do a gethostbyname */ |
| 520 | struct hostent *he; |
| 521 | |
| 522 | if (!ssl_sock_init()) return(0); |
| 523 | |
| 524 | he=GetHostByName(str); |
| 525 | if (he == NULL) |
| 526 | { |
| 527 | BIO_printf(bio_err,"gethostbyname failure\n"); |
| 528 | goto err; |
| 529 | } |
| 530 | /* cast to short because of win16 winsock definition */ |
| 531 | if ((short)he->h_addrtype != AF_INET) |
| 532 | { |
| 533 | BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n"); |
| 534 | return(0); |
| 535 | } |
| 536 | ip[0]=he->h_addr_list[0][0]; |
| 537 | ip[1]=he->h_addr_list[0][1]; |
| 538 | ip[2]=he->h_addr_list[0][2]; |
| 539 | ip[3]=he->h_addr_list[0][3]; |
| 540 | } |
| 541 | return(1); |
| 542 | err: |
| 543 | return(0); |
| 544 | } |
| 545 | |
| 546 | int extract_port(char *str, short *port_ptr) |
| 547 | { |
| 548 | int i; |
| 549 | struct servent *s; |
| 550 | |
| 551 | i=atoi(str); |
| 552 | if (i != 0) |
| 553 | *port_ptr=(unsigned short)i; |
| 554 | else |
| 555 | { |
| 556 | s=getservbyname(str,"tcp"); |
| 557 | if (s == NULL) |
| 558 | { |
| 559 | BIO_printf(bio_err,"getservbyname failure for %s\n",str); |
| 560 | return(0); |
| 561 | } |
| 562 | *port_ptr=ntohs((unsigned short)s->s_port); |
| 563 | } |
| 564 | return(1); |
| 565 | } |
| 566 | |
| 567 | #define GHBN_NUM 4 |
| 568 | static struct ghbn_cache_st |
| 569 | { |
| 570 | char name[128]; |
| 571 | struct hostent ent; |
| 572 | unsigned long order; |
| 573 | } ghbn_cache[GHBN_NUM]; |
| 574 | |
| 575 | static unsigned long ghbn_hits=0L; |
| 576 | static unsigned long ghbn_miss=0L; |
| 577 | |
| 578 | static struct hostent *GetHostByName(char *name) |
| 579 | { |
| 580 | struct hostent *ret; |
| 581 | int i,lowi=0; |
| 582 | unsigned long low= (unsigned long)-1; |
| 583 | |
| 584 | for (i=0; i<GHBN_NUM; i++) |
| 585 | { |
| 586 | if (low > ghbn_cache[i].order) |
| 587 | { |
| 588 | low=ghbn_cache[i].order; |
| 589 | lowi=i; |
| 590 | } |
| 591 | if (ghbn_cache[i].order > 0) |
| 592 | { |
| 593 | if (strncmp(name,ghbn_cache[i].name,128) == 0) |
| 594 | break; |
| 595 | } |
| 596 | } |
| 597 | if (i == GHBN_NUM) /* no hit*/ |
| 598 | { |
| 599 | ghbn_miss++; |
| 600 | ret=gethostbyname(name); |
| 601 | if (ret == NULL) return(NULL); |
| 602 | /* else add to cache */ |
| 603 | if(strlen(name) < sizeof ghbn_cache[0].name) |
| 604 | { |
| 605 | strcpy(ghbn_cache[lowi].name,name); |
| 606 | memcpy((char *)&(ghbn_cache[lowi].ent),ret,sizeof(struct hostent)); |
| 607 | ghbn_cache[lowi].order=ghbn_miss+ghbn_hits; |
| 608 | } |
| 609 | return(ret); |
| 610 | } |
| 611 | else |
| 612 | { |
| 613 | ghbn_hits++; |
| 614 | ret= &(ghbn_cache[i].ent); |
| 615 | ghbn_cache[i].order=ghbn_miss+ghbn_hits; |
| 616 | return(ret); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | #endif |