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ef416fc2 | 1 | /* |
61515785 | 2 | * "$Id: http-addrlist.c 11374 2013-11-04 23:49:10Z msweet $" |
ef416fc2 | 3 | * |
8eabd901 | 4 | * HTTP address list routines for CUPS. |
ef416fc2 | 5 | * |
8eabd901 MS |
6 | * Copyright 2007-2013 by Apple Inc. |
7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. | |
ef416fc2 | 8 | * |
8eabd901 MS |
9 | * These coded instructions, statements, and computer programs are the |
10 | * property of Apple Inc. and are protected by Federal copyright | |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 14 | */ |
15 | ||
16 | /* | |
17 | * Include necessary headers... | |
18 | */ | |
19 | ||
71e16022 | 20 | #include "cups-private.h" |
49d87452 MS |
21 | #ifdef HAVE_RESOLV_H |
22 | # include <resolv.h> | |
23 | #endif /* HAVE_RESOLV_H */ | |
dcb445bc MS |
24 | #ifdef HAVE_POLL |
25 | # include <poll.h> | |
26 | #endif /* HAVE_POLL */ | |
82cc1f9a | 27 | #ifndef WIN32 |
6961465f | 28 | # include <fcntl.h> |
82cc1f9a | 29 | #endif /* WIN32 */ |
ef416fc2 | 30 | |
31 | ||
32 | /* | |
33 | * 'httpAddrConnect()' - Connect to any of the addresses in the list. | |
34 | * | |
f3c17241 | 35 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 36 | */ |
37 | ||
38 | http_addrlist_t * /* O - Connected address or NULL on failure */ | |
39 | httpAddrConnect( | |
40 | http_addrlist_t *addrlist, /* I - List of potential addresses */ | |
41 | int *sock) /* O - Socket */ | |
dcb445bc MS |
42 | { |
43 | DEBUG_printf(("httpAddrConnect(addrlist=%p, sock=%p)", addrlist, sock)); | |
44 | ||
45 | return (httpAddrConnect2(addrlist, sock, 30000, NULL)); | |
46 | } | |
47 | ||
48 | ||
49 | /* | |
50 | * 'httpAddrConnect2()' - Connect to any of the addresses in the list with a | |
51 | * timeout and optional cancel. | |
52 | * | |
9c0e8e5d | 53 | * @since CUPS 1.7/OS X 10.9@ |
dcb445bc MS |
54 | */ |
55 | ||
56 | http_addrlist_t * /* O - Connected address or NULL on failure */ | |
57 | httpAddrConnect2( | |
58 | http_addrlist_t *addrlist, /* I - List of potential addresses */ | |
59 | int *sock, /* O - Socket */ | |
60 | int msec, /* I - Timeout in milliseconds */ | |
61 | int *cancel) /* I - Pointer to "cancel" variable */ | |
ef416fc2 | 62 | { |
10d09e33 | 63 | int val; /* Socket option value */ |
dcb445bc MS |
64 | #ifdef O_NONBLOCK |
65 | socklen_t len; /* Length of value */ | |
12f89d24 | 66 | http_addr_t peer; /* Peer address */ |
dcb445bc MS |
67 | int flags, /* Socket flags */ |
68 | remaining; /* Remaining timeout */ | |
12f89d24 | 69 | # ifdef HAVE_POLL |
dcb445bc | 70 | struct pollfd pfd; /* Polled file descriptor */ |
12f89d24 | 71 | # else |
dcb445bc MS |
72 | fd_set input_set, /* select() input set */ |
73 | output_set; /* select() output set */ | |
74 | struct timeval timeout; /* Timeout */ | |
12f89d24 | 75 | # endif /* HAVE_POLL */ |
dcb445bc | 76 | int nfds; /* Result from select()/poll() */ |
12f89d24 | 77 | #endif /* O_NONBLOCK */ |
1ff0402e | 78 | #ifdef DEBUG |
10d09e33 | 79 | char temp[256]; /* Temporary address string */ |
1ff0402e | 80 | #endif /* DEBUG */ |
ef416fc2 | 81 | |
82 | ||
dcb445bc MS |
83 | DEBUG_printf(("httpAddrConnect2(addrlist=%p, sock=%p, msec=%d, cancel=%p)", |
84 | addrlist, sock, msec, cancel)); | |
1ff0402e MS |
85 | |
86 | if (!sock) | |
87 | { | |
88 | errno = EINVAL; | |
cb7f98ee | 89 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
1ff0402e MS |
90 | return (NULL); |
91 | } | |
92 | ||
dcb445bc MS |
93 | if (cancel && *cancel) |
94 | return (NULL); | |
95 | ||
12f89d24 | 96 | if (msec <= 0 || getenv("CUPS_DISABLE_ASYNC_CONNECT")) |
dcb445bc MS |
97 | msec = INT_MAX; |
98 | ||
ef416fc2 | 99 | /* |
100 | * Loop through each address until we connect or run out of addresses... | |
101 | */ | |
102 | ||
103 | while (addrlist) | |
104 | { | |
12f89d24 MS |
105 | if (cancel && *cancel) |
106 | return (NULL); | |
107 | ||
ef416fc2 | 108 | /* |
109 | * Create the socket... | |
110 | */ | |
111 | ||
12f89d24 | 112 | DEBUG_printf(("2httpAddrConnect2: Trying %s:%d...", |
1ff0402e | 113 | httpAddrString(&(addrlist->addr), temp, sizeof(temp)), |
a469f8a5 | 114 | httpAddrPort(&(addrlist->addr)))); |
1ff0402e | 115 | |
22c9029b | 116 | if ((*sock = (int)socket(_httpAddrFamily(&(addrlist->addr)), SOCK_STREAM, |
1ff0402e | 117 | 0)) < 0) |
ef416fc2 | 118 | { |
119 | /* | |
120 | * Don't abort yet, as this could just be an issue with the local | |
121 | * system not being configured with IPv4/IPv6/domain socket enabled... | |
122 | */ | |
123 | ||
124 | addrlist = addrlist->next; | |
125 | continue; | |
126 | } | |
127 | ||
128 | /* | |
129 | * Set options... | |
130 | */ | |
131 | ||
132 | val = 1; | |
db8b865d | 133 | setsockopt(*sock, SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val)); |
ef416fc2 | 134 | |
135 | #ifdef SO_REUSEPORT | |
136 | val = 1; | |
db8b865d | 137 | setsockopt(*sock, SOL_SOCKET, SO_REUSEPORT, CUPS_SOCAST &val, sizeof(val)); |
ef416fc2 | 138 | #endif /* SO_REUSEPORT */ |
139 | ||
fa73b229 | 140 | #ifdef SO_NOSIGPIPE |
141 | val = 1; | |
db8b865d | 142 | setsockopt(*sock, SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val)); |
fa73b229 | 143 | #endif /* SO_NOSIGPIPE */ |
144 | ||
ef416fc2 | 145 | /* |
146 | * Using TCP_NODELAY improves responsiveness, especially on systems | |
147 | * with a slow loopback interface... | |
148 | */ | |
149 | ||
150 | val = 1; | |
db8b865d | 151 | setsockopt(*sock, IPPROTO_TCP, TCP_NODELAY, CUPS_SOCAST &val, sizeof(val)); |
ef416fc2 | 152 | |
153 | #ifdef FD_CLOEXEC | |
154 | /* | |
155 | * Close this socket when starting another process... | |
156 | */ | |
157 | ||
158 | fcntl(*sock, F_SETFD, FD_CLOEXEC); | |
159 | #endif /* FD_CLOEXEC */ | |
160 | ||
dcb445bc MS |
161 | #ifdef O_NONBLOCK |
162 | /* | |
163 | * Do an asynchronous connect by setting the socket non-blocking... | |
164 | */ | |
165 | ||
bb0d23b2 MS |
166 | DEBUG_printf(("httpAddrConnect2: Setting non-blocking connect()")); |
167 | ||
dcb445bc | 168 | flags = fcntl(*sock, F_GETFL, 0); |
12f89d24 MS |
169 | if (msec != INT_MAX) |
170 | { | |
171 | DEBUG_puts("httpAddrConnect2: Setting non-blocking connect()"); | |
172 | ||
dcb445bc | 173 | fcntl(*sock, F_SETFL, flags | O_NONBLOCK); |
12f89d24 | 174 | } |
dcb445bc MS |
175 | #endif /* O_NONBLOCK */ |
176 | ||
ef416fc2 | 177 | /* |
178 | * Then connect... | |
179 | */ | |
180 | ||
181 | if (!connect(*sock, &(addrlist->addr.addr), | |
182 | httpAddrLength(&(addrlist->addr)))) | |
1ff0402e | 183 | { |
12f89d24 | 184 | DEBUG_printf(("1httpAddrConnect2: Connected to %s:%d...", |
1ff0402e | 185 | httpAddrString(&(addrlist->addr), temp, sizeof(temp)), |
a469f8a5 | 186 | httpAddrPort(&(addrlist->addr)))); |
dcb445bc MS |
187 | |
188 | #ifdef O_NONBLOCK | |
189 | fcntl(*sock, F_SETFL, flags); | |
190 | #endif /* O_NONBLOCK */ | |
191 | ||
192 | return (addrlist); | |
193 | } | |
194 | ||
195 | #ifdef O_NONBLOCK | |
196 | # ifdef WIN32 | |
12f89d24 MS |
197 | if (WSAGetLastError() == WSAEINPROGRESS || |
198 | WSAGetLastError() == WSAEWOULDBLOCK) | |
dcb445bc | 199 | # else |
12f89d24 | 200 | if (errno == EINPROGRESS || errno == EWOULDBLOCK) |
dcb445bc MS |
201 | # endif /* WIN32 */ |
202 | { | |
12f89d24 | 203 | DEBUG_puts("1httpAddrConnect2: Finishing async connect()"); |
dcb445bc | 204 | |
12f89d24 | 205 | fcntl(*sock, F_SETFL, flags); |
dcb445bc | 206 | |
12f89d24 MS |
207 | for (remaining = msec; remaining > 0; remaining -= 250) |
208 | { | |
dcb445bc | 209 | do |
12f89d24 MS |
210 | { |
211 | if (cancel && *cancel) | |
212 | { | |
dcb445bc MS |
213 | /* |
214 | * Close this socket and return... | |
215 | */ | |
216 | ||
12f89d24 MS |
217 | DEBUG_puts("1httpAddrConnect2: Canceled connect()"); |
218 | ||
219 | # ifdef WIN32 | |
dcb445bc | 220 | closesocket(*sock); |
12f89d24 | 221 | # else |
dcb445bc | 222 | close(*sock); |
12f89d24 | 223 | # endif /* WIN32 */ |
dcb445bc MS |
224 | |
225 | *sock = -1; | |
226 | ||
227 | return (NULL); | |
12f89d24 MS |
228 | } |
229 | ||
230 | # ifdef HAVE_POLL | |
231 | pfd.fd = *sock; | |
232 | pfd.events = POLLIN | POLLOUT; | |
233 | ||
234 | nfds = poll(&pfd, 1, remaining > 250 ? 250 : remaining); | |
235 | ||
236 | DEBUG_printf(("1httpAddrConnect2: poll() returned %d (%d)", nfds, | |
237 | errno)); | |
dcb445bc | 238 | |
12f89d24 | 239 | # else |
dcb445bc MS |
240 | FD_ZERO(&input_set); |
241 | FD_SET(*sock, &input_set); | |
242 | output_set = input_set; | |
243 | ||
244 | timeout.tv_sec = 0; | |
245 | timeout.tv_usec = (remaining > 250 ? 250 : remaining) * 1000; | |
246 | ||
247 | nfds = select(*sock + 1, &input_set, &output_set, NULL, &timeout); | |
12f89d24 MS |
248 | |
249 | DEBUG_printf(("1httpAddrConnect2: select() returned %d (%d)", nfds, | |
250 | errno)); | |
251 | # endif /* HAVE_POLL */ | |
dcb445bc | 252 | } |
12f89d24 | 253 | # ifdef WIN32 |
dcb445bc MS |
254 | while (nfds < 0 && (WSAGetLastError() == WSAEINTR || |
255 | WSAGetLastError() == WSAEWOULDBLOCK)); | |
12f89d24 | 256 | # else |
dcb445bc | 257 | while (nfds < 0 && (errno == EINTR || errno == EAGAIN)); |
12f89d24 | 258 | # endif /* WIN32 */ |
dcb445bc MS |
259 | |
260 | if (nfds > 0) | |
261 | { | |
12f89d24 MS |
262 | len = sizeof(peer); |
263 | if (!getpeername(*sock, (struct sockaddr *)&peer, &len)) | |
dcb445bc | 264 | { |
12f89d24 MS |
265 | DEBUG_printf(("1httpAddrConnect2: Connected to %s:%d...", |
266 | httpAddrString(&peer, temp, sizeof(temp)), | |
a469f8a5 | 267 | httpAddrPort(&peer))); |
dcb445bc | 268 | |
dcb445bc MS |
269 | return (addrlist); |
270 | } | |
271 | ||
272 | break; | |
273 | } | |
274 | } | |
1ff0402e | 275 | } |
dcb445bc | 276 | #endif /* O_NONBLOCK */ |
1ff0402e | 277 | |
12f89d24 | 278 | DEBUG_printf(("1httpAddrConnect2: Unable to connect to %s:%d: %s", |
1ff0402e | 279 | httpAddrString(&(addrlist->addr), temp, sizeof(temp)), |
a469f8a5 | 280 | httpAddrPort(&(addrlist->addr)), strerror(errno))); |
ef416fc2 | 281 | |
12f89d24 MS |
282 | #ifndef WIN32 |
283 | if (errno == EINPROGRESS) | |
284 | errno = ETIMEDOUT; | |
285 | #endif /* !WIN32 */ | |
286 | ||
ef416fc2 | 287 | /* |
288 | * Close this socket and move to the next address... | |
289 | */ | |
290 | ||
bd7854cb | 291 | #ifdef WIN32 |
ef416fc2 | 292 | closesocket(*sock); |
bd7854cb | 293 | #else |
294 | close(*sock); | |
295 | #endif /* WIN32 */ | |
ef416fc2 | 296 | |
1ff0402e | 297 | *sock = -1; |
ef416fc2 | 298 | addrlist = addrlist->next; |
299 | } | |
300 | ||
7cf5915e | 301 | if (!addrlist) |
12f89d24 | 302 | #ifdef WIN32 |
cb7f98ee | 303 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, "Connection failed", 0); |
12f89d24 | 304 | #else |
cb7f98ee | 305 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, strerror(errno), 0); |
12f89d24 | 306 | #endif /* WIN32 */ |
7cf5915e | 307 | |
ef416fc2 | 308 | return (addrlist); |
309 | } | |
310 | ||
311 | ||
a469f8a5 MS |
312 | |
313 | /* | |
314 | * 'httpAddrCopyList()' - Copy an address list. | |
315 | * | |
9c0e8e5d | 316 | * @since CUPS 1.7/OS X 10.9@ |
a469f8a5 MS |
317 | */ |
318 | ||
319 | http_addrlist_t * /* O - New address list or @code NULL@ on error */ | |
320 | httpAddrCopyList( | |
321 | http_addrlist_t *src) /* I - Source address list */ | |
322 | { | |
323 | http_addrlist_t *dst = NULL, /* First list entry */ | |
324 | *prev = NULL, /* Previous list entry */ | |
325 | *current = NULL;/* Current list entry */ | |
326 | ||
327 | ||
328 | while (src) | |
329 | { | |
330 | if ((current = malloc(sizeof(http_addrlist_t))) == NULL) | |
331 | { | |
332 | current = dst; | |
333 | ||
334 | while (current) | |
335 | { | |
336 | prev = current; | |
337 | current = current->next; | |
338 | ||
339 | free(prev); | |
340 | } | |
341 | ||
342 | return (NULL); | |
343 | } | |
344 | ||
345 | memcpy(current, src, sizeof(http_addrlist_t)); | |
346 | ||
347 | current->next = NULL; | |
348 | ||
349 | if (prev) | |
350 | prev->next = current; | |
351 | else | |
352 | dst = current; | |
353 | ||
db8b865d MS |
354 | prev = current; |
355 | src = src->next; | |
a469f8a5 MS |
356 | } |
357 | ||
358 | return (dst); | |
359 | } | |
360 | ||
361 | ||
ef416fc2 | 362 | /* |
363 | * 'httpAddrFreeList()' - Free an address list. | |
364 | * | |
f3c17241 | 365 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 366 | */ |
367 | ||
368 | void | |
369 | httpAddrFreeList( | |
370 | http_addrlist_t *addrlist) /* I - Address list to free */ | |
371 | { | |
372 | http_addrlist_t *next; /* Next address in list */ | |
373 | ||
374 | ||
375 | /* | |
376 | * Free each address in the list... | |
377 | */ | |
378 | ||
379 | while (addrlist) | |
380 | { | |
381 | next = addrlist->next; | |
382 | ||
383 | free(addrlist); | |
384 | ||
385 | addrlist = next; | |
386 | } | |
387 | } | |
388 | ||
389 | ||
390 | /* | |
391 | * 'httpAddrGetList()' - Get a list of addresses for a hostname. | |
392 | * | |
f3c17241 | 393 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 394 | */ |
395 | ||
396 | http_addrlist_t * /* O - List of addresses or NULL */ | |
397 | httpAddrGetList(const char *hostname, /* I - Hostname, IP address, or NULL for passive listen address */ | |
398 | int family, /* I - Address family or AF_UNSPEC */ | |
399 | const char *service) /* I - Service name or port number */ | |
400 | { | |
401 | http_addrlist_t *first, /* First address in list */ | |
402 | *addr, /* Current address in list */ | |
403 | *temp; /* New address */ | |
49d87452 MS |
404 | _cups_globals_t *cg = _cupsGlobals(); |
405 | /* Global data */ | |
ef416fc2 | 406 | |
407 | ||
408 | #ifdef DEBUG | |
ae71f5de MS |
409 | _cups_debug_printf("httpAddrGetList(hostname=\"%s\", family=AF_%s, " |
410 | "service=\"%s\")\n", | |
411 | hostname ? hostname : "(nil)", | |
412 | family == AF_UNSPEC ? "UNSPEC" : | |
ef416fc2 | 413 | # ifdef AF_LOCAL |
ae71f5de | 414 | family == AF_LOCAL ? "LOCAL" : |
ef416fc2 | 415 | # endif /* AF_LOCAL */ |
416 | # ifdef AF_INET6 | |
ae71f5de | 417 | family == AF_INET6 ? "INET6" : |
ef416fc2 | 418 | # endif /* AF_INET6 */ |
ae71f5de | 419 | family == AF_INET ? "INET" : "???", service); |
ef416fc2 | 420 | #endif /* DEBUG */ |
421 | ||
49d87452 MS |
422 | #ifdef HAVE_RES_INIT |
423 | /* | |
424 | * STR #2920: Initialize resolver after failure in cups-polld | |
425 | * | |
426 | * If the previous lookup failed, re-initialize the resolver to prevent | |
427 | * temporary network errors from persisting. This *should* be handled by | |
428 | * the resolver libraries, but apparently the glibc folks do not agree. | |
429 | * | |
430 | * We set a flag at the end of this function if we encounter an error that | |
431 | * requires reinitialization of the resolver functions. We then call | |
432 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
433 | */ | |
434 | ||
435 | if (cg->need_res_init) | |
436 | { | |
437 | res_init(); | |
438 | ||
439 | cg->need_res_init = 0; | |
440 | } | |
441 | #endif /* HAVE_RES_INIT */ | |
442 | ||
ef416fc2 | 443 | /* |
444 | * Lookup the address the best way we can... | |
445 | */ | |
446 | ||
447 | first = addr = NULL; | |
448 | ||
449 | #ifdef AF_LOCAL | |
450 | if (hostname && hostname[0] == '/') | |
451 | { | |
452 | /* | |
453 | * Domain socket address... | |
454 | */ | |
455 | ||
91c84a35 MS |
456 | if ((first = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t))) != NULL) |
457 | { | |
458 | first->addr.un.sun_family = AF_LOCAL; | |
459 | strlcpy(first->addr.un.sun_path, hostname, sizeof(first->addr.un.sun_path)); | |
460 | } | |
ef416fc2 | 461 | } |
462 | else | |
463 | #endif /* AF_LOCAL */ | |
88f9aafc | 464 | if (!hostname || _cups_strcasecmp(hostname, "localhost")) |
ef416fc2 | 465 | { |
466 | #ifdef HAVE_GETADDRINFO | |
467 | struct addrinfo hints, /* Address lookup hints */ | |
468 | *results, /* Address lookup results */ | |
469 | *current; /* Current result */ | |
82f97232 | 470 | char ipv6[64], /* IPv6 address */ |
ef416fc2 | 471 | *ipv6zone; /* Pointer to zone separator */ |
472 | int ipv6len; /* Length of IPv6 address */ | |
49d87452 MS |
473 | int error; /* getaddrinfo() error */ |
474 | ||
ef416fc2 | 475 | |
476 | /* | |
477 | * Lookup the address as needed... | |
478 | */ | |
479 | ||
480 | memset(&hints, 0, sizeof(hints)); | |
481 | hints.ai_family = family; | |
482 | hints.ai_flags = hostname ? 0 : AI_PASSIVE; | |
483 | hints.ai_socktype = SOCK_STREAM; | |
484 | ||
485 | if (hostname && *hostname == '[') | |
486 | { | |
487 | /* | |
488 | * Remove brackets from numeric IPv6 address... | |
489 | */ | |
490 | ||
491 | if (!strncmp(hostname, "[v1.", 4)) | |
492 | { | |
493 | /* | |
494 | * Copy the newer address format which supports link-local addresses... | |
495 | */ | |
496 | ||
497 | strlcpy(ipv6, hostname + 4, sizeof(ipv6)); | |
b86bc4cf | 498 | if ((ipv6len = (int)strlen(ipv6) - 1) >= 0 && ipv6[ipv6len] == ']') |
ef416fc2 | 499 | { |
500 | ipv6[ipv6len] = '\0'; | |
501 | hostname = ipv6; | |
502 | ||
503 | /* | |
504 | * Convert "+zone" in address to "%zone"... | |
505 | */ | |
506 | ||
507 | if ((ipv6zone = strrchr(ipv6, '+')) != NULL) | |
508 | *ipv6zone = '%'; | |
509 | } | |
510 | } | |
511 | else | |
512 | { | |
513 | /* | |
514 | * Copy the regular non-link-local IPv6 address... | |
515 | */ | |
516 | ||
517 | strlcpy(ipv6, hostname + 1, sizeof(ipv6)); | |
b86bc4cf | 518 | if ((ipv6len = (int)strlen(ipv6) - 1) >= 0 && ipv6[ipv6len] == ']') |
ef416fc2 | 519 | { |
520 | ipv6[ipv6len] = '\0'; | |
521 | hostname = ipv6; | |
522 | } | |
523 | } | |
524 | } | |
525 | ||
49d87452 | 526 | if ((error = getaddrinfo(hostname, service, &hints, &results)) == 0) |
ef416fc2 | 527 | { |
528 | /* | |
529 | * Copy the results to our own address list structure... | |
530 | */ | |
531 | ||
532 | for (current = results; current; current = current->ai_next) | |
533 | if (current->ai_family == AF_INET || current->ai_family == AF_INET6) | |
534 | { | |
535 | /* | |
536 | * Copy the address over... | |
537 | */ | |
538 | ||
539 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
540 | if (!temp) | |
541 | { | |
542 | httpAddrFreeList(first); | |
cb7f98ee | 543 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 544 | return (NULL); |
545 | } | |
546 | ||
547 | if (current->ai_family == AF_INET6) | |
548 | memcpy(&(temp->addr.ipv6), current->ai_addr, | |
549 | sizeof(temp->addr.ipv6)); | |
550 | else | |
551 | memcpy(&(temp->addr.ipv4), current->ai_addr, | |
552 | sizeof(temp->addr.ipv4)); | |
553 | ||
554 | /* | |
555 | * Append the address to the list... | |
556 | */ | |
557 | ||
558 | if (!first) | |
559 | first = temp; | |
560 | ||
561 | if (addr) | |
562 | addr->next = temp; | |
563 | ||
564 | addr = temp; | |
565 | } | |
566 | ||
567 | /* | |
568 | * Free the results from getaddrinfo()... | |
569 | */ | |
570 | ||
571 | freeaddrinfo(results); | |
572 | } | |
dcb445bc MS |
573 | else |
574 | { | |
575 | if (error == EAI_FAIL) | |
576 | cg->need_res_init = 1; | |
577 | ||
cb7f98ee | 578 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, gai_strerror(error), 0); |
dcb445bc | 579 | } |
49d87452 | 580 | |
ef416fc2 | 581 | #else |
582 | if (hostname) | |
583 | { | |
584 | int i; /* Looping vars */ | |
585 | unsigned ip[4]; /* IPv4 address components */ | |
586 | const char *ptr; /* Pointer into hostname */ | |
587 | struct hostent *host; /* Result of lookup */ | |
588 | struct servent *port; /* Port number for service */ | |
589 | int portnum; /* Port number */ | |
590 | ||
591 | ||
592 | /* | |
593 | * Lookup the service... | |
594 | */ | |
595 | ||
596 | if (!service) | |
597 | portnum = 0; | |
598 | else if (isdigit(*service & 255)) | |
599 | portnum = atoi(service); | |
600 | else if ((port = getservbyname(service, NULL)) != NULL) | |
601 | portnum = ntohs(port->s_port); | |
602 | else if (!strcmp(service, "http")) | |
603 | portnum = 80; | |
604 | else if (!strcmp(service, "https")) | |
605 | portnum = 443; | |
321d8d57 | 606 | else if (!strcmp(service, "ipp") || !strcmp(service, "ipps")) |
ef416fc2 | 607 | portnum = 631; |
608 | else if (!strcmp(service, "lpd")) | |
609 | portnum = 515; | |
610 | else if (!strcmp(service, "socket")) | |
611 | portnum = 9100; | |
612 | else | |
613 | return (NULL); | |
614 | ||
615 | /* | |
616 | * This code is needed because some operating systems have a | |
617 | * buggy implementation of gethostbyname() that does not support | |
618 | * IPv4 addresses. If the hostname string is an IPv4 address, then | |
619 | * sscanf() is used to extract the IPv4 components. We then pack | |
620 | * the components into an IPv4 address manually, since the | |
621 | * inet_aton() function is deprecated. We use the htonl() macro | |
622 | * to get the right byte order for the address. | |
623 | */ | |
624 | ||
625 | for (ptr = hostname; isdigit(*ptr & 255) || *ptr == '.'; ptr ++); | |
626 | ||
627 | if (!*ptr) | |
628 | { | |
629 | /* | |
630 | * We have an IPv4 address; break it up and create an IPv4 address... | |
631 | */ | |
632 | ||
633 | if (sscanf(hostname, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) == 4 && | |
634 | ip[0] <= 255 && ip[1] <= 255 && ip[2] <= 255 && ip[3] <= 255) | |
635 | { | |
636 | first = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
637 | if (!first) | |
638 | return (NULL); | |
639 | ||
640 | first->addr.ipv4.sin_family = AF_INET; | |
8eabd901 MS |
641 | first->addr.ipv4.sin_addr.s_addr = htonl((((((((unsigned)ip[0] << 8) | |
642 | (unsigned)ip[1]) << 8) | | |
643 | (unsigned)ip[2]) << 8) | | |
644 | (unsigned)ip[3])); | |
ef416fc2 | 645 | first->addr.ipv4.sin_port = htons(portnum); |
646 | } | |
647 | } | |
648 | else if ((host = gethostbyname(hostname)) != NULL && | |
649 | # ifdef AF_INET6 | |
650 | (host->h_addrtype == AF_INET || host->h_addrtype == AF_INET6)) | |
651 | # else | |
652 | host->h_addrtype == AF_INET) | |
653 | # endif /* AF_INET6 */ | |
654 | { | |
655 | for (i = 0; host->h_addr_list[i]; i ++) | |
656 | { | |
657 | /* | |
658 | * Copy the address over... | |
659 | */ | |
660 | ||
661 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
662 | if (!temp) | |
663 | { | |
664 | httpAddrFreeList(first); | |
665 | return (NULL); | |
666 | } | |
667 | ||
668 | # ifdef AF_INET6 | |
669 | if (host->h_addrtype == AF_INET6) | |
670 | { | |
d6ae789d | 671 | temp->addr.ipv6.sin6_family = AF_INET6; |
ed486911 | 672 | memcpy(&(temp->addr.ipv6.sin6_addr), host->h_addr_list[i], |
ef416fc2 | 673 | sizeof(temp->addr.ipv6)); |
674 | temp->addr.ipv6.sin6_port = htons(portnum); | |
675 | } | |
676 | else | |
677 | # endif /* AF_INET6 */ | |
678 | { | |
d6ae789d | 679 | temp->addr.ipv4.sin_family = AF_INET; |
ed486911 | 680 | memcpy(&(temp->addr.ipv4.sin_addr), host->h_addr_list[i], |
ef416fc2 | 681 | sizeof(temp->addr.ipv4)); |
682 | temp->addr.ipv4.sin_port = htons(portnum); | |
683 | } | |
684 | ||
685 | /* | |
686 | * Append the address to the list... | |
687 | */ | |
688 | ||
689 | if (!first) | |
690 | first = temp; | |
691 | ||
692 | if (addr) | |
693 | addr->next = temp; | |
694 | ||
695 | addr = temp; | |
696 | } | |
697 | } | |
dcb445bc MS |
698 | else |
699 | { | |
700 | if (h_errno == NO_RECOVERY) | |
701 | cg->need_res_init = 1; | |
702 | ||
cb7f98ee | 703 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, hstrerror(h_errno), 0); |
dcb445bc | 704 | } |
ef416fc2 | 705 | } |
706 | #endif /* HAVE_GETADDRINFO */ | |
707 | } | |
708 | ||
709 | /* | |
710 | * Detect some common errors and handle them sanely... | |
711 | */ | |
712 | ||
88f9aafc | 713 | if (!addr && (!hostname || !_cups_strcasecmp(hostname, "localhost"))) |
ef416fc2 | 714 | { |
715 | struct servent *port; /* Port number for service */ | |
716 | int portnum; /* Port number */ | |
717 | ||
718 | ||
719 | /* | |
720 | * Lookup the service... | |
721 | */ | |
722 | ||
723 | if (!service) | |
724 | portnum = 0; | |
725 | else if (isdigit(*service & 255)) | |
726 | portnum = atoi(service); | |
727 | else if ((port = getservbyname(service, NULL)) != NULL) | |
728 | portnum = ntohs(port->s_port); | |
729 | else if (!strcmp(service, "http")) | |
730 | portnum = 80; | |
731 | else if (!strcmp(service, "https")) | |
732 | portnum = 443; | |
321d8d57 | 733 | else if (!strcmp(service, "ipp") || !strcmp(service, "ipps")) |
ef416fc2 | 734 | portnum = 631; |
735 | else if (!strcmp(service, "lpd")) | |
736 | portnum = 515; | |
737 | else if (!strcmp(service, "socket")) | |
738 | portnum = 9100; | |
739 | else | |
321d8d57 MS |
740 | { |
741 | httpAddrFreeList(first); | |
dcb445bc | 742 | |
cb7f98ee | 743 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unknown service name."), 1); |
ef416fc2 | 744 | return (NULL); |
321d8d57 | 745 | } |
ef416fc2 | 746 | |
88f9aafc | 747 | if (hostname && !_cups_strcasecmp(hostname, "localhost")) |
ef416fc2 | 748 | { |
749 | /* | |
750 | * Unfortunately, some users ignore all of the warnings in the | |
751 | * /etc/hosts file and delete "localhost" from it. If we get here | |
752 | * then we were unable to resolve the name, so use the IPv6 and/or | |
753 | * IPv4 loopback interface addresses... | |
754 | */ | |
755 | ||
756 | #ifdef AF_INET6 | |
757 | if (family != AF_INET) | |
758 | { | |
759 | /* | |
760 | * Add [::1] to the address list... | |
761 | */ | |
762 | ||
763 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
764 | if (!temp) | |
765 | { | |
cb7f98ee | 766 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 767 | httpAddrFreeList(first); |
768 | return (NULL); | |
769 | } | |
770 | ||
771 | temp->addr.ipv6.sin6_family = AF_INET6; | |
772 | temp->addr.ipv6.sin6_port = htons(portnum); | |
773 | # ifdef WIN32 | |
774 | temp->addr.ipv6.sin6_addr.u.Byte[15] = 1; | |
775 | # else | |
776 | temp->addr.ipv6.sin6_addr.s6_addr32[3] = htonl(1); | |
777 | # endif /* WIN32 */ | |
778 | ||
ed486911 | 779 | if (!first) |
780 | first = temp; | |
781 | ||
ef416fc2 | 782 | addr = temp; |
783 | } | |
784 | ||
785 | if (family != AF_INET6) | |
786 | #endif /* AF_INET6 */ | |
787 | { | |
788 | /* | |
789 | * Add 127.0.0.1 to the address list... | |
790 | */ | |
791 | ||
792 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
793 | if (!temp) | |
794 | { | |
cb7f98ee | 795 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 796 | httpAddrFreeList(first); |
797 | return (NULL); | |
798 | } | |
799 | ||
800 | temp->addr.ipv4.sin_family = AF_INET; | |
801 | temp->addr.ipv4.sin_port = htons(portnum); | |
802 | temp->addr.ipv4.sin_addr.s_addr = htonl(0x7f000001); | |
803 | ||
ed486911 | 804 | if (!first) |
805 | first = temp; | |
806 | ||
ef416fc2 | 807 | if (addr) |
808 | addr->next = temp; | |
ef416fc2 | 809 | } |
810 | } | |
811 | else if (!hostname) | |
812 | { | |
813 | /* | |
814 | * Provide one or more passive listening addresses... | |
815 | */ | |
816 | ||
817 | #ifdef AF_INET6 | |
818 | if (family != AF_INET) | |
819 | { | |
820 | /* | |
821 | * Add [::] to the address list... | |
822 | */ | |
823 | ||
824 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
825 | if (!temp) | |
826 | { | |
cb7f98ee | 827 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 828 | httpAddrFreeList(first); |
829 | return (NULL); | |
830 | } | |
831 | ||
832 | temp->addr.ipv6.sin6_family = AF_INET6; | |
833 | temp->addr.ipv6.sin6_port = htons(portnum); | |
834 | ||
ed486911 | 835 | if (!first) |
836 | first = temp; | |
837 | ||
ef416fc2 | 838 | addr = temp; |
839 | } | |
840 | ||
841 | if (family != AF_INET6) | |
842 | #endif /* AF_INET6 */ | |
843 | { | |
844 | /* | |
845 | * Add 0.0.0.0 to the address list... | |
846 | */ | |
847 | ||
848 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
849 | if (!temp) | |
850 | { | |
cb7f98ee | 851 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 852 | httpAddrFreeList(first); |
853 | return (NULL); | |
854 | } | |
855 | ||
856 | temp->addr.ipv4.sin_family = AF_INET; | |
857 | temp->addr.ipv4.sin_port = htons(portnum); | |
858 | ||
ed486911 | 859 | if (!first) |
860 | first = temp; | |
861 | ||
ef416fc2 | 862 | if (addr) |
863 | addr->next = temp; | |
ef416fc2 | 864 | } |
865 | } | |
866 | } | |
867 | ||
868 | /* | |
869 | * Return the address list... | |
870 | */ | |
871 | ||
872 | return (first); | |
873 | } | |
874 | ||
875 | ||
876 | /* | |
61515785 | 877 | * End of "$Id: http-addrlist.c 11374 2013-11-04 23:49:10Z msweet $". |
ef416fc2 | 878 | */ |