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Commit | Line | Data |
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ef416fc2 | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
996acce8 | 4 | * HTTP address routines for CUPS. |
ef416fc2 | 5 | * |
996acce8 MS |
6 | * Copyright 2007-2013 by Apple Inc. |
7 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. | |
ef416fc2 | 8 | * |
996acce8 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 */ | |
a29fd7dd | 24 | #ifdef __APPLE__ |
1106b00e | 25 | # include <CoreFoundation/CoreFoundation.h> |
1106b00e | 26 | # include <SystemConfiguration/SystemConfiguration.h> |
a29fd7dd | 27 | #endif /* __APPLE__ */ |
ef416fc2 | 28 | |
29 | ||
30 | /* | |
31 | * 'httpAddrAny()' - Check for the "any" address. | |
32 | * | |
f3c17241 | 33 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 34 | */ |
35 | ||
36 | int /* O - 1 if "any", 0 otherwise */ | |
37 | httpAddrAny(const http_addr_t *addr) /* I - Address to check */ | |
38 | { | |
89d46774 | 39 | if (!addr) |
40 | return (0); | |
41 | ||
ef416fc2 | 42 | #ifdef AF_INET6 |
43 | if (addr->addr.sa_family == AF_INET6 && | |
44 | IN6_IS_ADDR_UNSPECIFIED(&(addr->ipv6.sin6_addr))) | |
45 | return (1); | |
46 | #endif /* AF_INET6 */ | |
47 | ||
48 | if (addr->addr.sa_family == AF_INET && | |
49 | ntohl(addr->ipv4.sin_addr.s_addr) == 0x00000000) | |
50 | return (1); | |
51 | ||
52 | return (0); | |
53 | } | |
54 | ||
55 | ||
56 | /* | |
57 | * 'httpAddrEqual()' - Compare two addresses. | |
58 | * | |
f3c17241 | 59 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 60 | */ |
61 | ||
ecdc0628 | 62 | int /* O - 1 if equal, 0 if not */ |
ef416fc2 | 63 | httpAddrEqual(const http_addr_t *addr1, /* I - First address */ |
64 | const http_addr_t *addr2) /* I - Second address */ | |
65 | { | |
89d46774 | 66 | if (!addr1 && !addr2) |
67 | return (1); | |
68 | ||
69 | if (!addr1 || !addr2) | |
70 | return (0); | |
71 | ||
ef416fc2 | 72 | if (addr1->addr.sa_family != addr2->addr.sa_family) |
73 | return (0); | |
74 | ||
75 | #ifdef AF_LOCAL | |
76 | if (addr1->addr.sa_family == AF_LOCAL) | |
77 | return (!strcmp(addr1->un.sun_path, addr2->un.sun_path)); | |
78 | #endif /* AF_LOCAL */ | |
79 | ||
80 | #ifdef AF_INET6 | |
81 | if (addr1->addr.sa_family == AF_INET6) | |
82 | return (!memcmp(&(addr1->ipv6.sin6_addr), &(addr2->ipv6.sin6_addr), 16)); | |
83 | #endif /* AF_INET6 */ | |
84 | ||
85 | return (addr1->ipv4.sin_addr.s_addr == addr2->ipv4.sin_addr.s_addr); | |
86 | } | |
87 | ||
88 | ||
89 | /* | |
90 | * 'httpAddrLength()' - Return the length of the address in bytes. | |
91 | * | |
f3c17241 | 92 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 93 | */ |
94 | ||
95 | int /* O - Length in bytes */ | |
96 | httpAddrLength(const http_addr_t *addr) /* I - Address */ | |
97 | { | |
89d46774 | 98 | if (!addr) |
99 | return (0); | |
100 | ||
ef416fc2 | 101 | #ifdef AF_INET6 |
102 | if (addr->addr.sa_family == AF_INET6) | |
103 | return (sizeof(addr->ipv6)); | |
104 | else | |
105 | #endif /* AF_INET6 */ | |
106 | #ifdef AF_LOCAL | |
107 | if (addr->addr.sa_family == AF_LOCAL) | |
108 | return (offsetof(struct sockaddr_un, sun_path) + | |
109 | strlen(addr->un.sun_path) + 1); | |
110 | else | |
111 | #endif /* AF_LOCAL */ | |
112 | if (addr->addr.sa_family == AF_INET) | |
113 | return (sizeof(addr->ipv4)); | |
114 | else | |
115 | return (0); | |
116 | ||
117 | } | |
118 | ||
119 | ||
a469f8a5 MS |
120 | /* |
121 | * 'httpAddrListen()' - Create a listening socket bound to the specified | |
122 | * address and port. | |
123 | * | |
9c0e8e5d | 124 | * @since CUPS 1.7/OS X 10.9@ |
a469f8a5 MS |
125 | */ |
126 | ||
127 | int /* O - Socket or -1 on error */ | |
128 | httpAddrListen(http_addr_t *addr, /* I - Address to bind to */ | |
129 | int port) /* I - Port number to bind to */ | |
130 | { | |
131 | int fd = -1, /* Socket */ | |
132 | val; /* Socket value */ | |
133 | ||
134 | ||
135 | /* | |
136 | * Range check input... | |
137 | */ | |
138 | ||
139 | if (!addr || port <= 0) | |
140 | return (-1); | |
141 | ||
142 | if ((fd = socket(addr->addr.sa_family, SOCK_STREAM, 0)) < 0) | |
143 | { | |
144 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
145 | return (-1); | |
146 | } | |
147 | ||
148 | val = 1; | |
db8b865d | 149 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
150 | |
151 | #ifdef IPV6_V6ONLY | |
152 | if (addr->addr.sa_family == AF_INET6) | |
db8b865d | 153 | setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
154 | #endif /* IPV6_V6ONLY */ |
155 | ||
156 | _httpAddrSetPort(addr, port); | |
157 | ||
158 | if (bind(fd, (struct sockaddr *)addr, httpAddrLength(addr))) | |
159 | { | |
160 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
161 | ||
162 | close(fd); | |
163 | ||
164 | return (-1); | |
165 | } | |
166 | ||
167 | if (listen(fd, 5)) | |
168 | { | |
169 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
170 | ||
171 | close(fd); | |
172 | ||
173 | return (-1); | |
174 | } | |
175 | ||
176 | #ifdef SO_NOSIGPIPE | |
177 | /* | |
178 | * Disable SIGPIPE for this socket. | |
179 | */ | |
180 | ||
181 | val = 1; | |
db8b865d | 182 | setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
183 | #endif /* SO_NOSIGPIPE */ |
184 | ||
185 | return (fd); | |
186 | } | |
187 | ||
188 | ||
ef416fc2 | 189 | /* |
190 | * 'httpAddrLocalhost()' - Check for the local loopback address. | |
191 | * | |
f3c17241 | 192 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 193 | */ |
194 | ||
195 | int /* O - 1 if local host, 0 otherwise */ | |
196 | httpAddrLocalhost( | |
197 | const http_addr_t *addr) /* I - Address to check */ | |
198 | { | |
89d46774 | 199 | if (!addr) |
200 | return (1); | |
201 | ||
ef416fc2 | 202 | #ifdef AF_INET6 |
203 | if (addr->addr.sa_family == AF_INET6 && | |
fa73b229 | 204 | IN6_IS_ADDR_LOOPBACK(&(addr->ipv6.sin6_addr))) |
ef416fc2 | 205 | return (1); |
206 | #endif /* AF_INET6 */ | |
207 | ||
208 | #ifdef AF_LOCAL | |
209 | if (addr->addr.sa_family == AF_LOCAL) | |
210 | return (1); | |
211 | #endif /* AF_LOCAL */ | |
212 | ||
213 | if (addr->addr.sa_family == AF_INET && | |
e07d4801 | 214 | (ntohl(addr->ipv4.sin_addr.s_addr) & 0xff000000) == 0x7f000000) |
ef416fc2 | 215 | return (1); |
216 | ||
217 | return (0); | |
218 | } | |
219 | ||
220 | ||
ef416fc2 | 221 | /* |
222 | * 'httpAddrLookup()' - Lookup the hostname associated with the address. | |
223 | * | |
f3c17241 | 224 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 225 | */ |
226 | ||
ecdc0628 | 227 | char * /* O - Host name */ |
228 | httpAddrLookup( | |
229 | const http_addr_t *addr, /* I - Address to lookup */ | |
230 | char *name, /* I - Host name buffer */ | |
231 | int namelen) /* I - Size of name buffer */ | |
ef416fc2 | 232 | { |
49d87452 MS |
233 | _cups_globals_t *cg = _cupsGlobals(); |
234 | /* Global data */ | |
235 | ||
236 | ||
e07d4801 MS |
237 | DEBUG_printf(("httpAddrLookup(addr=%p, name=%p, namelen=%d)", addr, name, |
238 | namelen)); | |
ef416fc2 | 239 | |
240 | /* | |
241 | * Range check input... | |
242 | */ | |
243 | ||
244 | if (!addr || !name || namelen <= 2) | |
245 | { | |
246 | if (name && namelen >= 1) | |
247 | *name = '\0'; | |
248 | ||
249 | return (NULL); | |
250 | } | |
251 | ||
252 | #ifdef AF_LOCAL | |
253 | if (addr->addr.sa_family == AF_LOCAL) | |
49d87452 | 254 | { |
ef416fc2 | 255 | strlcpy(name, addr->un.sun_path, namelen); |
49d87452 MS |
256 | return (name); |
257 | } | |
ef416fc2 | 258 | #endif /* AF_LOCAL */ |
49d87452 | 259 | |
d2354e63 MS |
260 | /* |
261 | * Optimize lookups for localhost/loopback addresses... | |
262 | */ | |
263 | ||
264 | if (httpAddrLocalhost(addr)) | |
265 | { | |
266 | strlcpy(name, "localhost", namelen); | |
267 | return (name); | |
268 | } | |
269 | ||
49d87452 MS |
270 | #ifdef HAVE_RES_INIT |
271 | /* | |
272 | * STR #2920: Initialize resolver after failure in cups-polld | |
273 | * | |
274 | * If the previous lookup failed, re-initialize the resolver to prevent | |
275 | * temporary network errors from persisting. This *should* be handled by | |
276 | * the resolver libraries, but apparently the glibc folks do not agree. | |
277 | * | |
278 | * We set a flag at the end of this function if we encounter an error that | |
279 | * requires reinitialization of the resolver functions. We then call | |
280 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
281 | */ | |
282 | ||
283 | if (cg->need_res_init) | |
284 | { | |
285 | res_init(); | |
286 | ||
287 | cg->need_res_init = 0; | |
288 | } | |
289 | #endif /* HAVE_RES_INIT */ | |
290 | ||
ef416fc2 | 291 | #ifdef HAVE_GETNAMEINFO |
292 | { | |
db1f069b MS |
293 | /* |
294 | * STR #2486: httpAddrLookup() fails when getnameinfo() returns EAI_AGAIN | |
295 | * | |
296 | * FWIW, I think this is really a bug in the implementation of | |
297 | * getnameinfo(), but falling back on httpAddrString() is easy to | |
298 | * do... | |
299 | */ | |
ef416fc2 | 300 | |
49d87452 MS |
301 | int error = getnameinfo(&addr->addr, httpAddrLength(addr), name, namelen, |
302 | NULL, 0, 0); | |
303 | ||
304 | if (error) | |
305 | { | |
306 | if (error == EAI_FAIL) | |
307 | cg->need_res_init = 1; | |
308 | ||
db1f069b | 309 | return (httpAddrString(addr, name, namelen)); |
49d87452 | 310 | } |
ef416fc2 | 311 | } |
312 | #else | |
313 | { | |
314 | struct hostent *host; /* Host from name service */ | |
315 | ||
316 | ||
317 | # ifdef AF_INET6 | |
318 | if (addr->addr.sa_family == AF_INET6) | |
3dd9c340 | 319 | host = gethostbyaddr((char *)&(addr->ipv6.sin6_addr), |
ef416fc2 | 320 | sizeof(struct in_addr), AF_INET6); |
321 | else | |
322 | # endif /* AF_INET6 */ | |
3dd9c340 | 323 | host = gethostbyaddr((char *)&(addr->ipv4.sin_addr), |
ef416fc2 | 324 | sizeof(struct in_addr), AF_INET); |
325 | ||
326 | if (host == NULL) | |
327 | { | |
328 | /* | |
329 | * No hostname, so return the raw address... | |
330 | */ | |
331 | ||
49d87452 MS |
332 | if (h_errno == NO_RECOVERY) |
333 | cg->need_res_init = 1; | |
334 | ||
335 | return (httpAddrString(addr, name, namelen)); | |
ef416fc2 | 336 | } |
337 | ||
338 | strlcpy(name, host->h_name, namelen); | |
339 | } | |
340 | #endif /* HAVE_GETNAMEINFO */ | |
341 | ||
e07d4801 MS |
342 | DEBUG_printf(("1httpAddrLookup: returning \"%s\"...", name)); |
343 | ||
ef416fc2 | 344 | return (name); |
345 | } | |
346 | ||
347 | ||
5ec1fd3d MS |
348 | /* |
349 | * 'httpAddrFamily()' - Get the address family of an address. | |
350 | */ | |
351 | ||
352 | int /* O - Address family */ | |
353 | httpAddrFamily(http_addr_t *addr) /* I - Address */ | |
354 | { | |
355 | if (addr) | |
356 | return (addr->addr.sa_family); | |
357 | else | |
358 | return (0); | |
359 | } | |
360 | ||
361 | ||
1ff0402e | 362 | /* |
a469f8a5 MS |
363 | * 'httpAddrPort()' - Get the port number associated with an address. |
364 | * | |
9c0e8e5d | 365 | * @since CUPS 1.7/OS X 10.9@ |
1ff0402e MS |
366 | */ |
367 | ||
368 | int /* O - Port number */ | |
a469f8a5 | 369 | httpAddrPort(http_addr_t *addr) /* I - Address */ |
1ff0402e | 370 | { |
5f64df29 | 371 | if (!addr) |
5ec1fd3d | 372 | return (-1); |
1ff0402e | 373 | #ifdef AF_INET6 |
5f64df29 | 374 | else if (addr->addr.sa_family == AF_INET6) |
1ff0402e | 375 | return (ntohs(addr->ipv6.sin6_port)); |
1ff0402e | 376 | #endif /* AF_INET6 */ |
5f64df29 | 377 | else if (addr->addr.sa_family == AF_INET) |
1ff0402e MS |
378 | return (ntohs(addr->ipv4.sin_port)); |
379 | else | |
5ec1fd3d | 380 | return (0); |
1ff0402e MS |
381 | } |
382 | ||
c1420c87 MS |
383 | /* For OS X 10.8 and earlier */ |
384 | int _httpAddrPort(http_addr_t *addr) { return (httpAddrPort(addr)); } | |
385 | ||
1ff0402e | 386 | |
22c9029b MS |
387 | /* |
388 | * '_httpAddrSetPort()' - Set the port number associated with an address. | |
389 | */ | |
390 | ||
391 | void | |
392 | _httpAddrSetPort(http_addr_t *addr, /* I - Address */ | |
393 | int port) /* I - Port */ | |
394 | { | |
395 | if (!addr || port <= 0) | |
396 | return; | |
397 | ||
398 | #ifdef AF_INET6 | |
399 | if (addr->addr.sa_family == AF_INET6) | |
400 | addr->ipv6.sin6_port = htons(port); | |
401 | else | |
402 | #endif /* AF_INET6 */ | |
403 | if (addr->addr.sa_family == AF_INET) | |
404 | addr->ipv4.sin_port = htons(port); | |
405 | } | |
406 | ||
407 | ||
ef416fc2 | 408 | /* |
ecdc0628 | 409 | * 'httpAddrString()' - Convert an address to a numeric string. |
ef416fc2 | 410 | * |
f3c17241 | 411 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 412 | */ |
413 | ||
ecdc0628 | 414 | char * /* O - Numeric address string */ |
415 | httpAddrString(const http_addr_t *addr, /* I - Address to convert */ | |
416 | char *s, /* I - String buffer */ | |
417 | int slen) /* I - Length of string */ | |
ef416fc2 | 418 | { |
e07d4801 | 419 | DEBUG_printf(("httpAddrString(addr=%p, s=%p, slen=%d)", addr, s, slen)); |
ef416fc2 | 420 | |
421 | /* | |
422 | * Range check input... | |
423 | */ | |
424 | ||
425 | if (!addr || !s || slen <= 2) | |
426 | { | |
427 | if (s && slen >= 1) | |
428 | *s = '\0'; | |
429 | ||
430 | return (NULL); | |
431 | } | |
432 | ||
433 | #ifdef AF_LOCAL | |
434 | if (addr->addr.sa_family == AF_LOCAL) | |
771bd8cb MS |
435 | { |
436 | if (addr->un.sun_path[0] == '/') | |
437 | strlcpy(s, addr->un.sun_path, slen); | |
438 | else | |
439 | strlcpy(s, "localhost", slen); | |
440 | } | |
ef416fc2 | 441 | else |
442 | #endif /* AF_LOCAL */ | |
b423cd4c | 443 | if (addr->addr.sa_family == AF_INET) |
ef416fc2 | 444 | { |
b423cd4c | 445 | unsigned temp; /* Temporary address */ |
ef416fc2 | 446 | |
447 | ||
b423cd4c | 448 | temp = ntohl(addr->ipv4.sin_addr.s_addr); |
449 | ||
450 | snprintf(s, slen, "%d.%d.%d.%d", (temp >> 24) & 255, | |
451 | (temp >> 16) & 255, (temp >> 8) & 255, temp & 255); | |
452 | } | |
453 | #ifdef AF_INET6 | |
454 | else if (addr->addr.sa_family == AF_INET6) | |
455 | { | |
82f97232 MS |
456 | char *sptr, /* Pointer into string */ |
457 | temps[64]; /* Temporary string for address */ | |
458 | ||
b423cd4c | 459 | # ifdef HAVE_GETNAMEINFO |
82f97232 | 460 | if (getnameinfo(&addr->addr, httpAddrLength(addr), temps, sizeof(temps), |
b423cd4c | 461 | NULL, 0, NI_NUMERICHOST)) |
ef416fc2 | 462 | { |
463 | /* | |
464 | * If we get an error back, then the address type is not supported | |
465 | * and we should zero out the buffer... | |
466 | */ | |
467 | ||
468 | s[0] = '\0'; | |
469 | ||
470 | return (NULL); | |
471 | } | |
82f97232 MS |
472 | else if ((sptr = strchr(temps, '%')) != NULL) |
473 | { | |
474 | /* | |
475 | * Convert "%zone" to "+zone" to match URI form... | |
476 | */ | |
477 | ||
478 | *sptr = '+'; | |
479 | } | |
480 | ||
b423cd4c | 481 | # else |
b423cd4c | 482 | int i; /* Looping var */ |
483 | unsigned temp; /* Current value */ | |
484 | const char *prefix; /* Prefix for address */ | |
485 | ||
486 | ||
487 | prefix = ""; | |
82f97232 | 488 | for (sptr = temps, i = 0; i < 4 && addr->ipv6.sin6_addr.s6_addr32[i]; i ++) |
ef416fc2 | 489 | { |
b423cd4c | 490 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 491 | |
82f97232 MS |
492 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
493 | (temp >> 16) & 0xffff); | |
b423cd4c | 494 | prefix = ":"; |
b423cd4c | 495 | sptr += strlen(sptr); |
ef416fc2 | 496 | |
b423cd4c | 497 | temp &= 0xffff; |
ef416fc2 | 498 | |
b423cd4c | 499 | if (temp || i == 3 || addr->ipv6.sin6_addr.s6_addr32[i + 1]) |
500 | { | |
82f97232 | 501 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, temp); |
ef416fc2 | 502 | sptr += strlen(sptr); |
ef416fc2 | 503 | } |
b423cd4c | 504 | } |
505 | ||
506 | if (i < 4) | |
507 | { | |
508 | while (i < 4 && !addr->ipv6.sin6_addr.s6_addr32[i]) | |
509 | i ++; | |
ef416fc2 | 510 | |
511 | if (i < 4) | |
512 | { | |
82f97232 | 513 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s:", prefix); |
b423cd4c | 514 | prefix = ":"; |
b423cd4c | 515 | sptr += strlen(sptr); |
ef416fc2 | 516 | |
b423cd4c | 517 | for (; i < 4; i ++) |
ef416fc2 | 518 | { |
b423cd4c | 519 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 520 | |
82f97232 MS |
521 | if ((temp & 0xffff0000) || |
522 | (i > 0 && addr->ipv6.sin6_addr.s6_addr32[i - 1])) | |
ef416fc2 | 523 | { |
82f97232 MS |
524 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
525 | (temp >> 16) & 0xffff); | |
ef416fc2 | 526 | sptr += strlen(sptr); |
b423cd4c | 527 | } |
ef416fc2 | 528 | |
82f97232 MS |
529 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
530 | temp & 0xffff); | |
b423cd4c | 531 | sptr += strlen(sptr); |
ef416fc2 | 532 | } |
533 | } | |
b423cd4c | 534 | else if (sptr == s) |
535 | { | |
536 | /* | |
537 | * Empty address... | |
538 | */ | |
ef416fc2 | 539 | |
82f97232 | 540 | strlcpy(temps, "::", sizeof(temps)); |
b423cd4c | 541 | } |
542 | else | |
543 | { | |
544 | /* | |
545 | * Empty at end... | |
546 | */ | |
ef416fc2 | 547 | |
82f97232 | 548 | strlcpy(sptr, "::", sizeof(temps) - (sptr - temps)); |
b423cd4c | 549 | } |
ef416fc2 | 550 | } |
b423cd4c | 551 | # endif /* HAVE_GETNAMEINFO */ |
82f97232 MS |
552 | |
553 | /* | |
554 | * Add "[v1." and "]" around IPv6 address to convert to URI form. | |
555 | */ | |
556 | ||
557 | snprintf(s, slen, "[v1.%s]", temps); | |
ef416fc2 | 558 | } |
b423cd4c | 559 | #endif /* AF_INET6 */ |
560 | else | |
561 | strlcpy(s, "UNKNOWN", slen); | |
ef416fc2 | 562 | |
e07d4801 | 563 | DEBUG_printf(("1httpAddrString: returning \"%s\"...", s)); |
ef416fc2 | 564 | |
565 | return (s); | |
566 | } | |
567 | ||
568 | ||
996acce8 MS |
569 | /* |
570 | * 'httpGetAddress()' - Get the address of the connected peer of a connection. | |
571 | * | |
572 | * Returns @code NULL@ if the socket is currently unconnected. | |
573 | * | |
574 | * @since CUPS 2.0@ | |
575 | */ | |
576 | ||
577 | http_addr_t * /* O - Connected address or @code NULL@ */ | |
578 | httpGetAddress(http_t *http) /* I - HTTP connection */ | |
579 | { | |
580 | if (http) | |
581 | return (http->hostaddr); | |
582 | else | |
583 | return (NULL); | |
584 | } | |
585 | ||
586 | ||
ef416fc2 | 587 | /* |
588 | * 'httpGetHostByName()' - Lookup a hostname or IPv4 address, and return | |
589 | * address records for the specified name. | |
590 | * | |
591 | * @deprecated@ | |
592 | */ | |
593 | ||
594 | struct hostent * /* O - Host entry */ | |
595 | httpGetHostByName(const char *name) /* I - Hostname or IP address */ | |
596 | { | |
597 | const char *nameptr; /* Pointer into name */ | |
598 | unsigned ip[4]; /* IP address components */ | |
599 | _cups_globals_t *cg = _cupsGlobals(); | |
600 | /* Pointer to library globals */ | |
601 | ||
602 | ||
e07d4801 | 603 | DEBUG_printf(("httpGetHostByName(name=\"%s\")", name)); |
ef416fc2 | 604 | |
605 | /* | |
606 | * Avoid lookup delays and configuration problems when connecting | |
607 | * to the localhost address... | |
608 | */ | |
609 | ||
610 | if (!strcmp(name, "localhost")) | |
611 | name = "127.0.0.1"; | |
612 | ||
613 | /* | |
614 | * This function is needed because some operating systems have a | |
615 | * buggy implementation of gethostbyname() that does not support | |
616 | * IP addresses. If the first character of the name string is a | |
617 | * number, then sscanf() is used to extract the IP components. | |
618 | * We then pack the components into an IPv4 address manually, | |
619 | * since the inet_aton() function is deprecated. We use the | |
620 | * htonl() macro to get the right byte order for the address. | |
621 | * | |
622 | * We also support domain sockets when supported by the underlying | |
623 | * OS... | |
624 | */ | |
625 | ||
626 | #ifdef AF_LOCAL | |
627 | if (name[0] == '/') | |
628 | { | |
629 | /* | |
630 | * A domain socket address, so make an AF_LOCAL entry and return it... | |
631 | */ | |
632 | ||
633 | cg->hostent.h_name = (char *)name; | |
634 | cg->hostent.h_aliases = NULL; | |
635 | cg->hostent.h_addrtype = AF_LOCAL; | |
636 | cg->hostent.h_length = strlen(name) + 1; | |
637 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
638 | cg->ip_ptrs[0] = (char *)name; | |
639 | cg->ip_ptrs[1] = NULL; | |
640 | ||
e07d4801 | 641 | DEBUG_puts("1httpGetHostByName: returning domain socket address..."); |
ef416fc2 | 642 | |
643 | return (&cg->hostent); | |
644 | } | |
645 | #endif /* AF_LOCAL */ | |
646 | ||
647 | for (nameptr = name; isdigit(*nameptr & 255) || *nameptr == '.'; nameptr ++); | |
648 | ||
649 | if (!*nameptr) | |
650 | { | |
651 | /* | |
652 | * We have an IPv4 address; break it up and provide the host entry | |
653 | * to the caller. | |
654 | */ | |
655 | ||
656 | if (sscanf(name, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) | |
657 | return (NULL); /* Must have 4 numbers */ | |
658 | ||
659 | if (ip[0] > 255 || ip[1] > 255 || ip[2] > 255 || ip[3] > 255) | |
660 | return (NULL); /* Invalid byte ranges! */ | |
661 | ||
662 | cg->ip_addr = htonl(((((((ip[0] << 8) | ip[1]) << 8) | ip[2]) << 8) | | |
663 | ip[3])); | |
664 | ||
665 | /* | |
666 | * Fill in the host entry and return it... | |
667 | */ | |
668 | ||
669 | cg->hostent.h_name = (char *)name; | |
670 | cg->hostent.h_aliases = NULL; | |
671 | cg->hostent.h_addrtype = AF_INET; | |
672 | cg->hostent.h_length = 4; | |
673 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
674 | cg->ip_ptrs[0] = (char *)&(cg->ip_addr); | |
675 | cg->ip_ptrs[1] = NULL; | |
676 | ||
e07d4801 | 677 | DEBUG_puts("1httpGetHostByName: returning IPv4 address..."); |
ef416fc2 | 678 | |
679 | return (&cg->hostent); | |
680 | } | |
681 | else | |
682 | { | |
683 | /* | |
684 | * Use the gethostbyname() function to get the IPv4 address for | |
685 | * the name... | |
686 | */ | |
687 | ||
e07d4801 | 688 | DEBUG_puts("1httpGetHostByName: returning domain lookup address(es)..."); |
ef416fc2 | 689 | |
690 | return (gethostbyname(name)); | |
691 | } | |
692 | } | |
693 | ||
694 | ||
695 | /* | |
757d2cad | 696 | * 'httpGetHostname()' - Get the FQDN for the connection or local system. |
ef416fc2 | 697 | * |
757d2cad | 698 | * When "http" points to a connected socket, return the hostname or |
48bd1142 MS |
699 | * address that was used in the call to httpConnect() or httpConnectEncrypt(), |
700 | * or the address of the client for the connection from httpAcceptConnection(). | |
757d2cad | 701 | * Otherwise, return the FQDN for the local system using both gethostname() |
702 | * and gethostbyname() to get the local hostname with domain. | |
ef416fc2 | 703 | * |
f3c17241 | 704 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 705 | */ |
706 | ||
757d2cad | 707 | const char * /* O - FQDN for connection or system */ |
708 | httpGetHostname(http_t *http, /* I - HTTP connection or NULL */ | |
709 | char *s, /* I - String buffer for name */ | |
710 | int slen) /* I - Size of buffer */ | |
ef416fc2 | 711 | { |
757d2cad | 712 | if (http) |
480ef0fe | 713 | { |
5ec1fd3d MS |
714 | if (!s || slen <= 1) |
715 | { | |
716 | if (http->hostname[0] == '/') | |
717 | return ("localhost"); | |
718 | else | |
719 | return (http->hostname); | |
720 | } | |
721 | else if (http->hostname[0] == '/') | |
480ef0fe | 722 | strlcpy(s, "localhost", slen); |
723 | else | |
724 | strlcpy(s, http->hostname, slen); | |
725 | } | |
757d2cad | 726 | else |
ef416fc2 | 727 | { |
728 | /* | |
757d2cad | 729 | * Get the hostname... |
ef416fc2 | 730 | */ |
731 | ||
5ec1fd3d MS |
732 | if (!s || slen <= 1) |
733 | return (NULL); | |
734 | ||
89d46774 | 735 | if (gethostname(s, slen) < 0) |
736 | strlcpy(s, "localhost", slen); | |
757d2cad | 737 | |
738 | if (!strchr(s, '.')) | |
739 | { | |
0837b7e8 | 740 | #ifdef HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME |
1106b00e MS |
741 | /* |
742 | * The hostname is not a FQDN, so use the local hostname from the | |
743 | * SystemConfiguration framework... | |
744 | */ | |
745 | ||
746 | SCDynamicStoreRef sc = SCDynamicStoreCreate(kCFAllocatorDefault, | |
747 | CFSTR("libcups"), NULL, NULL); | |
748 | /* System configuration data */ | |
749 | CFStringRef local = sc ? SCDynamicStoreCopyLocalHostName(sc) : NULL; | |
750 | /* Local host name */ | |
751 | char localStr[1024]; /* Local host name C string */ | |
752 | ||
753 | if (local && CFStringGetCString(local, localStr, sizeof(localStr), | |
754 | kCFStringEncodingUTF8)) | |
755 | { | |
756 | /* | |
757 | * Append ".local." to the hostname we get... | |
758 | */ | |
759 | ||
760 | snprintf(s, slen, "%s.local.", localStr); | |
761 | } | |
762 | ||
763 | if (local) | |
764 | CFRelease(local); | |
765 | if (sc) | |
766 | CFRelease(sc); | |
767 | ||
768 | #else | |
757d2cad | 769 | /* |
770 | * The hostname is not a FQDN, so look it up... | |
771 | */ | |
772 | ||
1106b00e MS |
773 | struct hostent *host; /* Host entry to get FQDN */ |
774 | ||
89d46774 | 775 | if ((host = gethostbyname(s)) != NULL && host->h_name) |
1106b00e MS |
776 | { |
777 | /* | |
778 | * Use the resolved hostname... | |
779 | */ | |
780 | ||
757d2cad | 781 | strlcpy(s, host->h_name, slen); |
1106b00e | 782 | } |
0837b7e8 | 783 | #endif /* HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME */ |
757d2cad | 784 | } |
ef416fc2 | 785 | } |
786 | ||
787 | /* | |
788 | * Return the hostname with as much domain info as we have... | |
789 | */ | |
790 | ||
791 | return (s); | |
792 | } | |
793 | ||
794 | ||
48bd1142 MS |
795 | /* |
796 | * 'httpResolveHostname()' - Resolve the hostname of the HTTP connection | |
797 | * address. | |
798 | * | |
799 | * @since CUPS 2.0@ | |
800 | */ | |
801 | ||
802 | const char * /* O - Resolved hostname or @code NULL@ */ | |
803 | httpResolveHostname(http_t *http, /* I - HTTP connection */ | |
804 | char *buffer, /* I - Hostname buffer */ | |
805 | size_t bufsize) /* I - Size of buffer */ | |
806 | { | |
807 | if (!http) | |
808 | return (NULL); | |
809 | ||
810 | if (isdigit(http->hostname[0] & 255) || http->hostname[0] == '[') | |
811 | { | |
812 | char temp[1024]; /* Temporary string */ | |
813 | ||
814 | if (httpAddrLookup(http->hostaddr, temp, sizeof(temp))) | |
815 | strlcpy(http->hostname, temp, sizeof(http->hostname)); | |
816 | else | |
817 | return (NULL); | |
818 | } | |
819 | ||
820 | if (buffer) | |
821 | { | |
822 | if (http->hostname[0] == '/') | |
823 | strlcpy(buffer, "localhost", bufsize); | |
824 | else | |
825 | strlcpy(buffer, http->hostname, bufsize); | |
826 | ||
827 | return (buffer); | |
828 | } | |
829 | else if (http->hostname[0] == '/') | |
830 | return ("localhost"); | |
831 | else | |
832 | return (http->hostname); | |
833 | } | |
834 | ||
835 | ||
ef416fc2 | 836 | /* |
f2d18633 | 837 | * End of "$Id$". |
ef416fc2 | 838 | */ |