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Commit | Line | Data |
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ef416fc2 | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
71e16022 | 4 | * HTTP address list routines for CUPS. |
ef416fc2 | 5 | * |
cb7f98ee | 6 | * Copyright 2007-2013 by Apple Inc. |
b86bc4cf | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 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 | * Contents: | |
16 | * | |
a469f8a5 | 17 | * httpAddrConnect() - Connect to any of the addresses in the list. |
dcb445bc | 18 | * httpAddrConnect2() - Connect to any of the addresses in the list with a |
a469f8a5 MS |
19 | * timeout and optional cancel. |
20 | * httpAddrCopyList() - Copy an address list. | |
ef416fc2 | 21 | * httpAddrFreeList() - Free an address list. |
a469f8a5 | 22 | * httpAddrGetList() - Get a list of addresses for a hostname. |
ef416fc2 | 23 | */ |
24 | ||
25 | /* | |
26 | * Include necessary headers... | |
27 | */ | |
28 | ||
71e16022 | 29 | #include "cups-private.h" |
49d87452 MS |
30 | #ifdef HAVE_RESOLV_H |
31 | # include <resolv.h> | |
32 | #endif /* HAVE_RESOLV_H */ | |
dcb445bc MS |
33 | #ifdef HAVE_POLL |
34 | # include <poll.h> | |
35 | #endif /* HAVE_POLL */ | |
82cc1f9a | 36 | #ifndef WIN32 |
6961465f | 37 | # include <fcntl.h> |
82cc1f9a | 38 | #endif /* WIN32 */ |
ef416fc2 | 39 | |
40 | ||
41 | /* | |
42 | * 'httpAddrConnect()' - Connect to any of the addresses in the list. | |
43 | * | |
f3c17241 | 44 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 45 | */ |
46 | ||
47 | http_addrlist_t * /* O - Connected address or NULL on failure */ | |
48 | httpAddrConnect( | |
49 | http_addrlist_t *addrlist, /* I - List of potential addresses */ | |
50 | int *sock) /* O - Socket */ | |
dcb445bc MS |
51 | { |
52 | DEBUG_printf(("httpAddrConnect(addrlist=%p, sock=%p)", addrlist, sock)); | |
53 | ||
54 | return (httpAddrConnect2(addrlist, sock, 30000, NULL)); | |
55 | } | |
56 | ||
57 | ||
58 | /* | |
59 | * 'httpAddrConnect2()' - Connect to any of the addresses in the list with a | |
60 | * timeout and optional cancel. | |
61 | * | |
6961465f | 62 | * @since CUPS 1.7@ |
dcb445bc MS |
63 | */ |
64 | ||
65 | http_addrlist_t * /* O - Connected address or NULL on failure */ | |
66 | httpAddrConnect2( | |
67 | http_addrlist_t *addrlist, /* I - List of potential addresses */ | |
68 | int *sock, /* O - Socket */ | |
69 | int msec, /* I - Timeout in milliseconds */ | |
70 | int *cancel) /* I - Pointer to "cancel" variable */ | |
ef416fc2 | 71 | { |
10d09e33 | 72 | int val; /* Socket option value */ |
dcb445bc MS |
73 | #ifdef O_NONBLOCK |
74 | socklen_t len; /* Length of value */ | |
12f89d24 | 75 | http_addr_t peer; /* Peer address */ |
dcb445bc MS |
76 | int flags, /* Socket flags */ |
77 | remaining; /* Remaining timeout */ | |
12f89d24 | 78 | # ifdef HAVE_POLL |
dcb445bc | 79 | struct pollfd pfd; /* Polled file descriptor */ |
12f89d24 | 80 | # else |
dcb445bc MS |
81 | fd_set input_set, /* select() input set */ |
82 | output_set; /* select() output set */ | |
83 | struct timeval timeout; /* Timeout */ | |
12f89d24 | 84 | # endif /* HAVE_POLL */ |
dcb445bc | 85 | int nfds; /* Result from select()/poll() */ |
12f89d24 | 86 | #endif /* O_NONBLOCK */ |
1ff0402e | 87 | #ifdef DEBUG |
10d09e33 | 88 | char temp[256]; /* Temporary address string */ |
1ff0402e | 89 | #endif /* DEBUG */ |
ef416fc2 | 90 | |
91 | ||
dcb445bc MS |
92 | DEBUG_printf(("httpAddrConnect2(addrlist=%p, sock=%p, msec=%d, cancel=%p)", |
93 | addrlist, sock, msec, cancel)); | |
1ff0402e MS |
94 | |
95 | if (!sock) | |
96 | { | |
97 | errno = EINVAL; | |
cb7f98ee | 98 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
1ff0402e MS |
99 | return (NULL); |
100 | } | |
101 | ||
dcb445bc MS |
102 | if (cancel && *cancel) |
103 | return (NULL); | |
104 | ||
12f89d24 | 105 | if (msec <= 0 || getenv("CUPS_DISABLE_ASYNC_CONNECT")) |
dcb445bc MS |
106 | msec = INT_MAX; |
107 | ||
ef416fc2 | 108 | /* |
109 | * Loop through each address until we connect or run out of addresses... | |
110 | */ | |
111 | ||
112 | while (addrlist) | |
113 | { | |
12f89d24 MS |
114 | if (cancel && *cancel) |
115 | return (NULL); | |
116 | ||
ef416fc2 | 117 | /* |
118 | * Create the socket... | |
119 | */ | |
120 | ||
12f89d24 | 121 | DEBUG_printf(("2httpAddrConnect2: Trying %s:%d...", |
1ff0402e | 122 | httpAddrString(&(addrlist->addr), temp, sizeof(temp)), |
a469f8a5 | 123 | httpAddrPort(&(addrlist->addr)))); |
1ff0402e | 124 | |
22c9029b | 125 | if ((*sock = (int)socket(_httpAddrFamily(&(addrlist->addr)), SOCK_STREAM, |
1ff0402e | 126 | 0)) < 0) |
ef416fc2 | 127 | { |
128 | /* | |
129 | * Don't abort yet, as this could just be an issue with the local | |
130 | * system not being configured with IPv4/IPv6/domain socket enabled... | |
131 | */ | |
132 | ||
133 | addrlist = addrlist->next; | |
134 | continue; | |
135 | } | |
136 | ||
137 | /* | |
138 | * Set options... | |
139 | */ | |
140 | ||
141 | val = 1; | |
db8b865d | 142 | setsockopt(*sock, SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val)); |
ef416fc2 | 143 | |
144 | #ifdef SO_REUSEPORT | |
145 | val = 1; | |
db8b865d | 146 | setsockopt(*sock, SOL_SOCKET, SO_REUSEPORT, CUPS_SOCAST &val, sizeof(val)); |
ef416fc2 | 147 | #endif /* SO_REUSEPORT */ |
148 | ||
fa73b229 | 149 | #ifdef SO_NOSIGPIPE |
150 | val = 1; | |
db8b865d | 151 | setsockopt(*sock, SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val)); |
fa73b229 | 152 | #endif /* SO_NOSIGPIPE */ |
153 | ||
ef416fc2 | 154 | /* |
155 | * Using TCP_NODELAY improves responsiveness, especially on systems | |
156 | * with a slow loopback interface... | |
157 | */ | |
158 | ||
159 | val = 1; | |
db8b865d | 160 | setsockopt(*sock, IPPROTO_TCP, TCP_NODELAY, CUPS_SOCAST &val, sizeof(val)); |
ef416fc2 | 161 | |
162 | #ifdef FD_CLOEXEC | |
163 | /* | |
164 | * Close this socket when starting another process... | |
165 | */ | |
166 | ||
167 | fcntl(*sock, F_SETFD, FD_CLOEXEC); | |
168 | #endif /* FD_CLOEXEC */ | |
169 | ||
dcb445bc MS |
170 | #ifdef O_NONBLOCK |
171 | /* | |
172 | * Do an asynchronous connect by setting the socket non-blocking... | |
173 | */ | |
174 | ||
bb0d23b2 MS |
175 | DEBUG_printf(("httpAddrConnect2: Setting non-blocking connect()")); |
176 | ||
dcb445bc | 177 | flags = fcntl(*sock, F_GETFL, 0); |
12f89d24 MS |
178 | if (msec != INT_MAX) |
179 | { | |
180 | DEBUG_puts("httpAddrConnect2: Setting non-blocking connect()"); | |
181 | ||
dcb445bc | 182 | fcntl(*sock, F_SETFL, flags | O_NONBLOCK); |
12f89d24 | 183 | } |
dcb445bc MS |
184 | #endif /* O_NONBLOCK */ |
185 | ||
ef416fc2 | 186 | /* |
187 | * Then connect... | |
188 | */ | |
189 | ||
190 | if (!connect(*sock, &(addrlist->addr.addr), | |
191 | httpAddrLength(&(addrlist->addr)))) | |
1ff0402e | 192 | { |
12f89d24 | 193 | DEBUG_printf(("1httpAddrConnect2: Connected to %s:%d...", |
1ff0402e | 194 | httpAddrString(&(addrlist->addr), temp, sizeof(temp)), |
a469f8a5 | 195 | httpAddrPort(&(addrlist->addr)))); |
dcb445bc MS |
196 | |
197 | #ifdef O_NONBLOCK | |
198 | fcntl(*sock, F_SETFL, flags); | |
199 | #endif /* O_NONBLOCK */ | |
200 | ||
201 | return (addrlist); | |
202 | } | |
203 | ||
204 | #ifdef O_NONBLOCK | |
205 | # ifdef WIN32 | |
12f89d24 MS |
206 | if (WSAGetLastError() == WSAEINPROGRESS || |
207 | WSAGetLastError() == WSAEWOULDBLOCK) | |
dcb445bc | 208 | # else |
12f89d24 | 209 | if (errno == EINPROGRESS || errno == EWOULDBLOCK) |
dcb445bc MS |
210 | # endif /* WIN32 */ |
211 | { | |
12f89d24 | 212 | DEBUG_puts("1httpAddrConnect2: Finishing async connect()"); |
dcb445bc | 213 | |
12f89d24 | 214 | fcntl(*sock, F_SETFL, flags); |
dcb445bc | 215 | |
12f89d24 MS |
216 | for (remaining = msec; remaining > 0; remaining -= 250) |
217 | { | |
dcb445bc | 218 | do |
12f89d24 MS |
219 | { |
220 | if (cancel && *cancel) | |
221 | { | |
dcb445bc MS |
222 | /* |
223 | * Close this socket and return... | |
224 | */ | |
225 | ||
12f89d24 MS |
226 | DEBUG_puts("1httpAddrConnect2: Canceled connect()"); |
227 | ||
228 | # ifdef WIN32 | |
dcb445bc | 229 | closesocket(*sock); |
12f89d24 | 230 | # else |
dcb445bc | 231 | close(*sock); |
12f89d24 | 232 | # endif /* WIN32 */ |
dcb445bc MS |
233 | |
234 | *sock = -1; | |
235 | ||
236 | return (NULL); | |
12f89d24 MS |
237 | } |
238 | ||
239 | # ifdef HAVE_POLL | |
240 | pfd.fd = *sock; | |
241 | pfd.events = POLLIN | POLLOUT; | |
242 | ||
243 | nfds = poll(&pfd, 1, remaining > 250 ? 250 : remaining); | |
244 | ||
245 | DEBUG_printf(("1httpAddrConnect2: poll() returned %d (%d)", nfds, | |
246 | errno)); | |
dcb445bc | 247 | |
12f89d24 | 248 | # else |
dcb445bc MS |
249 | FD_ZERO(&input_set); |
250 | FD_SET(*sock, &input_set); | |
251 | output_set = input_set; | |
252 | ||
253 | timeout.tv_sec = 0; | |
254 | timeout.tv_usec = (remaining > 250 ? 250 : remaining) * 1000; | |
255 | ||
256 | nfds = select(*sock + 1, &input_set, &output_set, NULL, &timeout); | |
12f89d24 MS |
257 | |
258 | DEBUG_printf(("1httpAddrConnect2: select() returned %d (%d)", nfds, | |
259 | errno)); | |
260 | # endif /* HAVE_POLL */ | |
dcb445bc | 261 | } |
12f89d24 | 262 | # ifdef WIN32 |
dcb445bc MS |
263 | while (nfds < 0 && (WSAGetLastError() == WSAEINTR || |
264 | WSAGetLastError() == WSAEWOULDBLOCK)); | |
12f89d24 | 265 | # else |
dcb445bc | 266 | while (nfds < 0 && (errno == EINTR || errno == EAGAIN)); |
12f89d24 | 267 | # endif /* WIN32 */ |
dcb445bc MS |
268 | |
269 | if (nfds > 0) | |
270 | { | |
12f89d24 MS |
271 | len = sizeof(peer); |
272 | if (!getpeername(*sock, (struct sockaddr *)&peer, &len)) | |
dcb445bc | 273 | { |
12f89d24 MS |
274 | DEBUG_printf(("1httpAddrConnect2: Connected to %s:%d...", |
275 | httpAddrString(&peer, temp, sizeof(temp)), | |
a469f8a5 | 276 | httpAddrPort(&peer))); |
dcb445bc | 277 | |
dcb445bc MS |
278 | return (addrlist); |
279 | } | |
280 | ||
281 | break; | |
282 | } | |
283 | } | |
1ff0402e | 284 | } |
dcb445bc | 285 | #endif /* O_NONBLOCK */ |
1ff0402e | 286 | |
12f89d24 | 287 | DEBUG_printf(("1httpAddrConnect2: Unable to connect to %s:%d: %s", |
1ff0402e | 288 | httpAddrString(&(addrlist->addr), temp, sizeof(temp)), |
a469f8a5 | 289 | httpAddrPort(&(addrlist->addr)), strerror(errno))); |
ef416fc2 | 290 | |
12f89d24 MS |
291 | #ifndef WIN32 |
292 | if (errno == EINPROGRESS) | |
293 | errno = ETIMEDOUT; | |
294 | #endif /* !WIN32 */ | |
295 | ||
ef416fc2 | 296 | /* |
297 | * Close this socket and move to the next address... | |
298 | */ | |
299 | ||
bd7854cb | 300 | #ifdef WIN32 |
ef416fc2 | 301 | closesocket(*sock); |
bd7854cb | 302 | #else |
303 | close(*sock); | |
304 | #endif /* WIN32 */ | |
ef416fc2 | 305 | |
1ff0402e | 306 | *sock = -1; |
ef416fc2 | 307 | addrlist = addrlist->next; |
308 | } | |
309 | ||
7cf5915e | 310 | if (!addrlist) |
12f89d24 | 311 | #ifdef WIN32 |
cb7f98ee | 312 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, "Connection failed", 0); |
12f89d24 | 313 | #else |
cb7f98ee | 314 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, strerror(errno), 0); |
12f89d24 | 315 | #endif /* WIN32 */ |
7cf5915e | 316 | |
ef416fc2 | 317 | return (addrlist); |
318 | } | |
319 | ||
320 | ||
a469f8a5 MS |
321 | |
322 | /* | |
323 | * 'httpAddrCopyList()' - Copy an address list. | |
324 | * | |
325 | * @since CUPS 1.7@ | |
326 | */ | |
327 | ||
328 | http_addrlist_t * /* O - New address list or @code NULL@ on error */ | |
329 | httpAddrCopyList( | |
330 | http_addrlist_t *src) /* I - Source address list */ | |
331 | { | |
332 | http_addrlist_t *dst = NULL, /* First list entry */ | |
333 | *prev = NULL, /* Previous list entry */ | |
334 | *current = NULL;/* Current list entry */ | |
335 | ||
336 | ||
337 | while (src) | |
338 | { | |
339 | if ((current = malloc(sizeof(http_addrlist_t))) == NULL) | |
340 | { | |
341 | current = dst; | |
342 | ||
343 | while (current) | |
344 | { | |
345 | prev = current; | |
346 | current = current->next; | |
347 | ||
348 | free(prev); | |
349 | } | |
350 | ||
351 | return (NULL); | |
352 | } | |
353 | ||
354 | memcpy(current, src, sizeof(http_addrlist_t)); | |
355 | ||
356 | current->next = NULL; | |
357 | ||
358 | if (prev) | |
359 | prev->next = current; | |
360 | else | |
361 | dst = current; | |
362 | ||
db8b865d MS |
363 | prev = current; |
364 | src = src->next; | |
a469f8a5 MS |
365 | } |
366 | ||
367 | return (dst); | |
368 | } | |
369 | ||
370 | ||
ef416fc2 | 371 | /* |
372 | * 'httpAddrFreeList()' - Free an address list. | |
373 | * | |
f3c17241 | 374 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 375 | */ |
376 | ||
377 | void | |
378 | httpAddrFreeList( | |
379 | http_addrlist_t *addrlist) /* I - Address list to free */ | |
380 | { | |
381 | http_addrlist_t *next; /* Next address in list */ | |
382 | ||
383 | ||
384 | /* | |
385 | * Free each address in the list... | |
386 | */ | |
387 | ||
388 | while (addrlist) | |
389 | { | |
390 | next = addrlist->next; | |
391 | ||
392 | free(addrlist); | |
393 | ||
394 | addrlist = next; | |
395 | } | |
396 | } | |
397 | ||
398 | ||
399 | /* | |
400 | * 'httpAddrGetList()' - Get a list of addresses for a hostname. | |
401 | * | |
f3c17241 | 402 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 403 | */ |
404 | ||
405 | http_addrlist_t * /* O - List of addresses or NULL */ | |
406 | httpAddrGetList(const char *hostname, /* I - Hostname, IP address, or NULL for passive listen address */ | |
407 | int family, /* I - Address family or AF_UNSPEC */ | |
408 | const char *service) /* I - Service name or port number */ | |
409 | { | |
410 | http_addrlist_t *first, /* First address in list */ | |
411 | *addr, /* Current address in list */ | |
412 | *temp; /* New address */ | |
49d87452 MS |
413 | _cups_globals_t *cg = _cupsGlobals(); |
414 | /* Global data */ | |
ef416fc2 | 415 | |
416 | ||
417 | #ifdef DEBUG | |
ae71f5de MS |
418 | _cups_debug_printf("httpAddrGetList(hostname=\"%s\", family=AF_%s, " |
419 | "service=\"%s\")\n", | |
420 | hostname ? hostname : "(nil)", | |
421 | family == AF_UNSPEC ? "UNSPEC" : | |
ef416fc2 | 422 | # ifdef AF_LOCAL |
ae71f5de | 423 | family == AF_LOCAL ? "LOCAL" : |
ef416fc2 | 424 | # endif /* AF_LOCAL */ |
425 | # ifdef AF_INET6 | |
ae71f5de | 426 | family == AF_INET6 ? "INET6" : |
ef416fc2 | 427 | # endif /* AF_INET6 */ |
ae71f5de | 428 | family == AF_INET ? "INET" : "???", service); |
ef416fc2 | 429 | #endif /* DEBUG */ |
430 | ||
49d87452 MS |
431 | #ifdef HAVE_RES_INIT |
432 | /* | |
433 | * STR #2920: Initialize resolver after failure in cups-polld | |
434 | * | |
435 | * If the previous lookup failed, re-initialize the resolver to prevent | |
436 | * temporary network errors from persisting. This *should* be handled by | |
437 | * the resolver libraries, but apparently the glibc folks do not agree. | |
438 | * | |
439 | * We set a flag at the end of this function if we encounter an error that | |
440 | * requires reinitialization of the resolver functions. We then call | |
441 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
442 | */ | |
443 | ||
444 | if (cg->need_res_init) | |
445 | { | |
446 | res_init(); | |
447 | ||
448 | cg->need_res_init = 0; | |
449 | } | |
450 | #endif /* HAVE_RES_INIT */ | |
451 | ||
ef416fc2 | 452 | /* |
453 | * Lookup the address the best way we can... | |
454 | */ | |
455 | ||
456 | first = addr = NULL; | |
457 | ||
458 | #ifdef AF_LOCAL | |
459 | if (hostname && hostname[0] == '/') | |
460 | { | |
461 | /* | |
462 | * Domain socket address... | |
463 | */ | |
464 | ||
91c84a35 MS |
465 | if ((first = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t))) != NULL) |
466 | { | |
467 | first->addr.un.sun_family = AF_LOCAL; | |
468 | strlcpy(first->addr.un.sun_path, hostname, sizeof(first->addr.un.sun_path)); | |
469 | } | |
ef416fc2 | 470 | } |
471 | else | |
472 | #endif /* AF_LOCAL */ | |
88f9aafc | 473 | if (!hostname || _cups_strcasecmp(hostname, "localhost")) |
ef416fc2 | 474 | { |
475 | #ifdef HAVE_GETADDRINFO | |
476 | struct addrinfo hints, /* Address lookup hints */ | |
477 | *results, /* Address lookup results */ | |
478 | *current; /* Current result */ | |
82f97232 | 479 | char ipv6[64], /* IPv6 address */ |
ef416fc2 | 480 | *ipv6zone; /* Pointer to zone separator */ |
481 | int ipv6len; /* Length of IPv6 address */ | |
49d87452 MS |
482 | int error; /* getaddrinfo() error */ |
483 | ||
ef416fc2 | 484 | |
485 | /* | |
486 | * Lookup the address as needed... | |
487 | */ | |
488 | ||
489 | memset(&hints, 0, sizeof(hints)); | |
490 | hints.ai_family = family; | |
491 | hints.ai_flags = hostname ? 0 : AI_PASSIVE; | |
492 | hints.ai_socktype = SOCK_STREAM; | |
493 | ||
494 | if (hostname && *hostname == '[') | |
495 | { | |
496 | /* | |
497 | * Remove brackets from numeric IPv6 address... | |
498 | */ | |
499 | ||
500 | if (!strncmp(hostname, "[v1.", 4)) | |
501 | { | |
502 | /* | |
503 | * Copy the newer address format which supports link-local addresses... | |
504 | */ | |
505 | ||
506 | strlcpy(ipv6, hostname + 4, sizeof(ipv6)); | |
b86bc4cf | 507 | if ((ipv6len = (int)strlen(ipv6) - 1) >= 0 && ipv6[ipv6len] == ']') |
ef416fc2 | 508 | { |
509 | ipv6[ipv6len] = '\0'; | |
510 | hostname = ipv6; | |
511 | ||
512 | /* | |
513 | * Convert "+zone" in address to "%zone"... | |
514 | */ | |
515 | ||
516 | if ((ipv6zone = strrchr(ipv6, '+')) != NULL) | |
517 | *ipv6zone = '%'; | |
518 | } | |
519 | } | |
520 | else | |
521 | { | |
522 | /* | |
523 | * Copy the regular non-link-local IPv6 address... | |
524 | */ | |
525 | ||
526 | strlcpy(ipv6, hostname + 1, sizeof(ipv6)); | |
b86bc4cf | 527 | if ((ipv6len = (int)strlen(ipv6) - 1) >= 0 && ipv6[ipv6len] == ']') |
ef416fc2 | 528 | { |
529 | ipv6[ipv6len] = '\0'; | |
530 | hostname = ipv6; | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
49d87452 | 535 | if ((error = getaddrinfo(hostname, service, &hints, &results)) == 0) |
ef416fc2 | 536 | { |
537 | /* | |
538 | * Copy the results to our own address list structure... | |
539 | */ | |
540 | ||
541 | for (current = results; current; current = current->ai_next) | |
542 | if (current->ai_family == AF_INET || current->ai_family == AF_INET6) | |
543 | { | |
544 | /* | |
545 | * Copy the address over... | |
546 | */ | |
547 | ||
548 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
549 | if (!temp) | |
550 | { | |
551 | httpAddrFreeList(first); | |
cb7f98ee | 552 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 553 | return (NULL); |
554 | } | |
555 | ||
556 | if (current->ai_family == AF_INET6) | |
557 | memcpy(&(temp->addr.ipv6), current->ai_addr, | |
558 | sizeof(temp->addr.ipv6)); | |
559 | else | |
560 | memcpy(&(temp->addr.ipv4), current->ai_addr, | |
561 | sizeof(temp->addr.ipv4)); | |
562 | ||
563 | /* | |
564 | * Append the address to the list... | |
565 | */ | |
566 | ||
567 | if (!first) | |
568 | first = temp; | |
569 | ||
570 | if (addr) | |
571 | addr->next = temp; | |
572 | ||
573 | addr = temp; | |
574 | } | |
575 | ||
576 | /* | |
577 | * Free the results from getaddrinfo()... | |
578 | */ | |
579 | ||
580 | freeaddrinfo(results); | |
581 | } | |
dcb445bc MS |
582 | else |
583 | { | |
584 | if (error == EAI_FAIL) | |
585 | cg->need_res_init = 1; | |
586 | ||
cb7f98ee | 587 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, gai_strerror(error), 0); |
dcb445bc | 588 | } |
49d87452 | 589 | |
ef416fc2 | 590 | #else |
591 | if (hostname) | |
592 | { | |
593 | int i; /* Looping vars */ | |
594 | unsigned ip[4]; /* IPv4 address components */ | |
595 | const char *ptr; /* Pointer into hostname */ | |
596 | struct hostent *host; /* Result of lookup */ | |
597 | struct servent *port; /* Port number for service */ | |
598 | int portnum; /* Port number */ | |
599 | ||
600 | ||
601 | /* | |
602 | * Lookup the service... | |
603 | */ | |
604 | ||
605 | if (!service) | |
606 | portnum = 0; | |
607 | else if (isdigit(*service & 255)) | |
608 | portnum = atoi(service); | |
609 | else if ((port = getservbyname(service, NULL)) != NULL) | |
610 | portnum = ntohs(port->s_port); | |
611 | else if (!strcmp(service, "http")) | |
612 | portnum = 80; | |
613 | else if (!strcmp(service, "https")) | |
614 | portnum = 443; | |
321d8d57 | 615 | else if (!strcmp(service, "ipp") || !strcmp(service, "ipps")) |
ef416fc2 | 616 | portnum = 631; |
617 | else if (!strcmp(service, "lpd")) | |
618 | portnum = 515; | |
619 | else if (!strcmp(service, "socket")) | |
620 | portnum = 9100; | |
621 | else | |
622 | return (NULL); | |
623 | ||
624 | /* | |
625 | * This code is needed because some operating systems have a | |
626 | * buggy implementation of gethostbyname() that does not support | |
627 | * IPv4 addresses. If the hostname string is an IPv4 address, then | |
628 | * sscanf() is used to extract the IPv4 components. We then pack | |
629 | * the components into an IPv4 address manually, since the | |
630 | * inet_aton() function is deprecated. We use the htonl() macro | |
631 | * to get the right byte order for the address. | |
632 | */ | |
633 | ||
634 | for (ptr = hostname; isdigit(*ptr & 255) || *ptr == '.'; ptr ++); | |
635 | ||
636 | if (!*ptr) | |
637 | { | |
638 | /* | |
639 | * We have an IPv4 address; break it up and create an IPv4 address... | |
640 | */ | |
641 | ||
642 | if (sscanf(hostname, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) == 4 && | |
643 | ip[0] <= 255 && ip[1] <= 255 && ip[2] <= 255 && ip[3] <= 255) | |
644 | { | |
645 | first = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
646 | if (!first) | |
647 | return (NULL); | |
648 | ||
649 | first->addr.ipv4.sin_family = AF_INET; | |
650 | first->addr.ipv4.sin_addr.s_addr = htonl(((((((ip[0] << 8) | | |
651 | ip[1]) << 8) | | |
652 | ip[2]) << 8) | ip[3])); | |
653 | first->addr.ipv4.sin_port = htons(portnum); | |
654 | } | |
655 | } | |
656 | else if ((host = gethostbyname(hostname)) != NULL && | |
657 | # ifdef AF_INET6 | |
658 | (host->h_addrtype == AF_INET || host->h_addrtype == AF_INET6)) | |
659 | # else | |
660 | host->h_addrtype == AF_INET) | |
661 | # endif /* AF_INET6 */ | |
662 | { | |
663 | for (i = 0; host->h_addr_list[i]; i ++) | |
664 | { | |
665 | /* | |
666 | * Copy the address over... | |
667 | */ | |
668 | ||
669 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
670 | if (!temp) | |
671 | { | |
672 | httpAddrFreeList(first); | |
673 | return (NULL); | |
674 | } | |
675 | ||
676 | # ifdef AF_INET6 | |
677 | if (host->h_addrtype == AF_INET6) | |
678 | { | |
d6ae789d | 679 | temp->addr.ipv6.sin6_family = AF_INET6; |
ed486911 | 680 | memcpy(&(temp->addr.ipv6.sin6_addr), host->h_addr_list[i], |
ef416fc2 | 681 | sizeof(temp->addr.ipv6)); |
682 | temp->addr.ipv6.sin6_port = htons(portnum); | |
683 | } | |
684 | else | |
685 | # endif /* AF_INET6 */ | |
686 | { | |
d6ae789d | 687 | temp->addr.ipv4.sin_family = AF_INET; |
ed486911 | 688 | memcpy(&(temp->addr.ipv4.sin_addr), host->h_addr_list[i], |
ef416fc2 | 689 | sizeof(temp->addr.ipv4)); |
690 | temp->addr.ipv4.sin_port = htons(portnum); | |
691 | } | |
692 | ||
693 | /* | |
694 | * Append the address to the list... | |
695 | */ | |
696 | ||
697 | if (!first) | |
698 | first = temp; | |
699 | ||
700 | if (addr) | |
701 | addr->next = temp; | |
702 | ||
703 | addr = temp; | |
704 | } | |
705 | } | |
dcb445bc MS |
706 | else |
707 | { | |
708 | if (h_errno == NO_RECOVERY) | |
709 | cg->need_res_init = 1; | |
710 | ||
cb7f98ee | 711 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, hstrerror(h_errno), 0); |
dcb445bc | 712 | } |
ef416fc2 | 713 | } |
714 | #endif /* HAVE_GETADDRINFO */ | |
715 | } | |
716 | ||
717 | /* | |
718 | * Detect some common errors and handle them sanely... | |
719 | */ | |
720 | ||
88f9aafc | 721 | if (!addr && (!hostname || !_cups_strcasecmp(hostname, "localhost"))) |
ef416fc2 | 722 | { |
723 | struct servent *port; /* Port number for service */ | |
724 | int portnum; /* Port number */ | |
725 | ||
726 | ||
727 | /* | |
728 | * Lookup the service... | |
729 | */ | |
730 | ||
731 | if (!service) | |
732 | portnum = 0; | |
733 | else if (isdigit(*service & 255)) | |
734 | portnum = atoi(service); | |
735 | else if ((port = getservbyname(service, NULL)) != NULL) | |
736 | portnum = ntohs(port->s_port); | |
737 | else if (!strcmp(service, "http")) | |
738 | portnum = 80; | |
739 | else if (!strcmp(service, "https")) | |
740 | portnum = 443; | |
321d8d57 | 741 | else if (!strcmp(service, "ipp") || !strcmp(service, "ipps")) |
ef416fc2 | 742 | portnum = 631; |
743 | else if (!strcmp(service, "lpd")) | |
744 | portnum = 515; | |
745 | else if (!strcmp(service, "socket")) | |
746 | portnum = 9100; | |
747 | else | |
321d8d57 MS |
748 | { |
749 | httpAddrFreeList(first); | |
dcb445bc | 750 | |
cb7f98ee | 751 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unknown service name."), 1); |
ef416fc2 | 752 | return (NULL); |
321d8d57 | 753 | } |
ef416fc2 | 754 | |
88f9aafc | 755 | if (hostname && !_cups_strcasecmp(hostname, "localhost")) |
ef416fc2 | 756 | { |
757 | /* | |
758 | * Unfortunately, some users ignore all of the warnings in the | |
759 | * /etc/hosts file and delete "localhost" from it. If we get here | |
760 | * then we were unable to resolve the name, so use the IPv6 and/or | |
761 | * IPv4 loopback interface addresses... | |
762 | */ | |
763 | ||
764 | #ifdef AF_INET6 | |
765 | if (family != AF_INET) | |
766 | { | |
767 | /* | |
768 | * Add [::1] to the address list... | |
769 | */ | |
770 | ||
771 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
772 | if (!temp) | |
773 | { | |
cb7f98ee | 774 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 775 | httpAddrFreeList(first); |
776 | return (NULL); | |
777 | } | |
778 | ||
779 | temp->addr.ipv6.sin6_family = AF_INET6; | |
780 | temp->addr.ipv6.sin6_port = htons(portnum); | |
781 | # ifdef WIN32 | |
782 | temp->addr.ipv6.sin6_addr.u.Byte[15] = 1; | |
783 | # else | |
784 | temp->addr.ipv6.sin6_addr.s6_addr32[3] = htonl(1); | |
785 | # endif /* WIN32 */ | |
786 | ||
ed486911 | 787 | if (!first) |
788 | first = temp; | |
789 | ||
ef416fc2 | 790 | addr = temp; |
791 | } | |
792 | ||
793 | if (family != AF_INET6) | |
794 | #endif /* AF_INET6 */ | |
795 | { | |
796 | /* | |
797 | * Add 127.0.0.1 to the address list... | |
798 | */ | |
799 | ||
800 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
801 | if (!temp) | |
802 | { | |
cb7f98ee | 803 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 804 | httpAddrFreeList(first); |
805 | return (NULL); | |
806 | } | |
807 | ||
808 | temp->addr.ipv4.sin_family = AF_INET; | |
809 | temp->addr.ipv4.sin_port = htons(portnum); | |
810 | temp->addr.ipv4.sin_addr.s_addr = htonl(0x7f000001); | |
811 | ||
ed486911 | 812 | if (!first) |
813 | first = temp; | |
814 | ||
ef416fc2 | 815 | if (addr) |
816 | addr->next = temp; | |
ef416fc2 | 817 | } |
818 | } | |
819 | else if (!hostname) | |
820 | { | |
821 | /* | |
822 | * Provide one or more passive listening addresses... | |
823 | */ | |
824 | ||
825 | #ifdef AF_INET6 | |
826 | if (family != AF_INET) | |
827 | { | |
828 | /* | |
829 | * Add [::] to the address list... | |
830 | */ | |
831 | ||
832 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
833 | if (!temp) | |
834 | { | |
cb7f98ee | 835 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 836 | httpAddrFreeList(first); |
837 | return (NULL); | |
838 | } | |
839 | ||
840 | temp->addr.ipv6.sin6_family = AF_INET6; | |
841 | temp->addr.ipv6.sin6_port = htons(portnum); | |
842 | ||
ed486911 | 843 | if (!first) |
844 | first = temp; | |
845 | ||
ef416fc2 | 846 | addr = temp; |
847 | } | |
848 | ||
849 | if (family != AF_INET6) | |
850 | #endif /* AF_INET6 */ | |
851 | { | |
852 | /* | |
853 | * Add 0.0.0.0 to the address list... | |
854 | */ | |
855 | ||
856 | temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t)); | |
857 | if (!temp) | |
858 | { | |
cb7f98ee | 859 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); |
ef416fc2 | 860 | httpAddrFreeList(first); |
861 | return (NULL); | |
862 | } | |
863 | ||
864 | temp->addr.ipv4.sin_family = AF_INET; | |
865 | temp->addr.ipv4.sin_port = htons(portnum); | |
866 | ||
ed486911 | 867 | if (!first) |
868 | first = temp; | |
869 | ||
ef416fc2 | 870 | if (addr) |
871 | addr->next = temp; | |
ef416fc2 | 872 | } |
873 | } | |
874 | } | |
875 | ||
876 | /* | |
877 | * Return the address list... | |
878 | */ | |
879 | ||
880 | return (first); | |
881 | } | |
882 | ||
883 | ||
884 | /* | |
f2d18633 | 885 | * End of "$Id$". |
ef416fc2 | 886 | */ |