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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: http-addr.c 7910 2008-09-06 00:25:17Z mike $" |
ef416fc2 | 3 | * |
71e16022 | 4 | * HTTP address routines for CUPS. |
ef416fc2 | 5 | * |
82f97232 | 6 | * Copyright 2007-2011 by Apple Inc. |
ecdc0628 | 7 | * Copyright 1997-2006 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 | * | |
17 | * httpAddrAny() - Check for the "any" address. | |
18 | * httpAddrEqual() - Compare two addresses. | |
19 | * httpAddrLocalhost() - Check for the local loopback address. | |
20 | * httpAddrLookup() - Lookup the hostname associated with the address. | |
1ff0402e | 21 | * _httpAddrPort() - Get the port number associated with an address. |
22c9029b | 22 | * _httpAddrSetPort() - Set the port number associated with an address. |
ef416fc2 | 23 | * httpAddrString() - Convert an IP address to a dotted string. |
24 | * httpGetHostByName() - Lookup a hostname or IP address, and return | |
25 | * address records for the specified name. | |
26 | * httpGetHostname() - Get the FQDN for the local system. | |
27 | */ | |
28 | ||
29 | /* | |
30 | * Include necessary headers... | |
31 | */ | |
32 | ||
71e16022 | 33 | #include "cups-private.h" |
49d87452 MS |
34 | #ifdef HAVE_RESOLV_H |
35 | # include <resolv.h> | |
36 | #endif /* HAVE_RESOLV_H */ | |
1106b00e MS |
37 | #ifdef HAVE_COREFOUNDATION |
38 | # include <CoreFoundation/CoreFoundation.h> | |
39 | #endif /* HAVE_COREFOUNDATION */ | |
40 | #ifdef HAVE_SYSTEMCONFIGURATION | |
41 | # include <SystemConfiguration/SystemConfiguration.h> | |
42 | #endif /* HAVE_SYSTEMCONFIGURATION */ | |
ef416fc2 | 43 | |
44 | ||
45 | /* | |
46 | * 'httpAddrAny()' - Check for the "any" address. | |
47 | * | |
426c6a59 | 48 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 49 | */ |
50 | ||
51 | int /* O - 1 if "any", 0 otherwise */ | |
52 | httpAddrAny(const http_addr_t *addr) /* I - Address to check */ | |
53 | { | |
89d46774 | 54 | if (!addr) |
55 | return (0); | |
56 | ||
ef416fc2 | 57 | #ifdef AF_INET6 |
58 | if (addr->addr.sa_family == AF_INET6 && | |
59 | IN6_IS_ADDR_UNSPECIFIED(&(addr->ipv6.sin6_addr))) | |
60 | return (1); | |
61 | #endif /* AF_INET6 */ | |
62 | ||
63 | if (addr->addr.sa_family == AF_INET && | |
64 | ntohl(addr->ipv4.sin_addr.s_addr) == 0x00000000) | |
65 | return (1); | |
66 | ||
67 | return (0); | |
68 | } | |
69 | ||
70 | ||
71 | /* | |
72 | * 'httpAddrEqual()' - Compare two addresses. | |
73 | * | |
426c6a59 | 74 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 75 | */ |
76 | ||
ecdc0628 | 77 | int /* O - 1 if equal, 0 if not */ |
ef416fc2 | 78 | httpAddrEqual(const http_addr_t *addr1, /* I - First address */ |
79 | const http_addr_t *addr2) /* I - Second address */ | |
80 | { | |
89d46774 | 81 | if (!addr1 && !addr2) |
82 | return (1); | |
83 | ||
84 | if (!addr1 || !addr2) | |
85 | return (0); | |
86 | ||
ef416fc2 | 87 | if (addr1->addr.sa_family != addr2->addr.sa_family) |
88 | return (0); | |
89 | ||
90 | #ifdef AF_LOCAL | |
91 | if (addr1->addr.sa_family == AF_LOCAL) | |
92 | return (!strcmp(addr1->un.sun_path, addr2->un.sun_path)); | |
93 | #endif /* AF_LOCAL */ | |
94 | ||
95 | #ifdef AF_INET6 | |
96 | if (addr1->addr.sa_family == AF_INET6) | |
97 | return (!memcmp(&(addr1->ipv6.sin6_addr), &(addr2->ipv6.sin6_addr), 16)); | |
98 | #endif /* AF_INET6 */ | |
99 | ||
100 | return (addr1->ipv4.sin_addr.s_addr == addr2->ipv4.sin_addr.s_addr); | |
101 | } | |
102 | ||
103 | ||
104 | /* | |
105 | * 'httpAddrLength()' - Return the length of the address in bytes. | |
106 | * | |
426c6a59 | 107 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 108 | */ |
109 | ||
110 | int /* O - Length in bytes */ | |
111 | httpAddrLength(const http_addr_t *addr) /* I - Address */ | |
112 | { | |
89d46774 | 113 | if (!addr) |
114 | return (0); | |
115 | ||
ef416fc2 | 116 | #ifdef AF_INET6 |
117 | if (addr->addr.sa_family == AF_INET6) | |
118 | return (sizeof(addr->ipv6)); | |
119 | else | |
120 | #endif /* AF_INET6 */ | |
121 | #ifdef AF_LOCAL | |
122 | if (addr->addr.sa_family == AF_LOCAL) | |
123 | return (offsetof(struct sockaddr_un, sun_path) + | |
124 | strlen(addr->un.sun_path) + 1); | |
125 | else | |
126 | #endif /* AF_LOCAL */ | |
127 | if (addr->addr.sa_family == AF_INET) | |
128 | return (sizeof(addr->ipv4)); | |
129 | else | |
130 | return (0); | |
131 | ||
132 | } | |
133 | ||
134 | ||
135 | /* | |
136 | * 'httpAddrLocalhost()' - Check for the local loopback address. | |
137 | * | |
426c6a59 | 138 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 139 | */ |
140 | ||
141 | int /* O - 1 if local host, 0 otherwise */ | |
142 | httpAddrLocalhost( | |
143 | const http_addr_t *addr) /* I - Address to check */ | |
144 | { | |
89d46774 | 145 | if (!addr) |
146 | return (1); | |
147 | ||
ef416fc2 | 148 | #ifdef AF_INET6 |
149 | if (addr->addr.sa_family == AF_INET6 && | |
fa73b229 | 150 | IN6_IS_ADDR_LOOPBACK(&(addr->ipv6.sin6_addr))) |
ef416fc2 | 151 | return (1); |
152 | #endif /* AF_INET6 */ | |
153 | ||
154 | #ifdef AF_LOCAL | |
155 | if (addr->addr.sa_family == AF_LOCAL) | |
156 | return (1); | |
157 | #endif /* AF_LOCAL */ | |
158 | ||
159 | if (addr->addr.sa_family == AF_INET && | |
e07d4801 | 160 | (ntohl(addr->ipv4.sin_addr.s_addr) & 0xff000000) == 0x7f000000) |
ef416fc2 | 161 | return (1); |
162 | ||
163 | return (0); | |
164 | } | |
165 | ||
166 | ||
167 | #ifdef __sgi | |
168 | # define ADDR_CAST (struct sockaddr *) | |
169 | #else | |
170 | # define ADDR_CAST (char *) | |
171 | #endif /* __sgi */ | |
172 | ||
173 | ||
174 | /* | |
175 | * 'httpAddrLookup()' - Lookup the hostname associated with the address. | |
176 | * | |
426c6a59 | 177 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 178 | */ |
179 | ||
ecdc0628 | 180 | char * /* O - Host name */ |
181 | httpAddrLookup( | |
182 | const http_addr_t *addr, /* I - Address to lookup */ | |
183 | char *name, /* I - Host name buffer */ | |
184 | int namelen) /* I - Size of name buffer */ | |
ef416fc2 | 185 | { |
49d87452 MS |
186 | _cups_globals_t *cg = _cupsGlobals(); |
187 | /* Global data */ | |
188 | ||
189 | ||
e07d4801 MS |
190 | DEBUG_printf(("httpAddrLookup(addr=%p, name=%p, namelen=%d)", addr, name, |
191 | namelen)); | |
ef416fc2 | 192 | |
193 | /* | |
194 | * Range check input... | |
195 | */ | |
196 | ||
197 | if (!addr || !name || namelen <= 2) | |
198 | { | |
199 | if (name && namelen >= 1) | |
200 | *name = '\0'; | |
201 | ||
202 | return (NULL); | |
203 | } | |
204 | ||
205 | #ifdef AF_LOCAL | |
206 | if (addr->addr.sa_family == AF_LOCAL) | |
49d87452 | 207 | { |
ef416fc2 | 208 | strlcpy(name, addr->un.sun_path, namelen); |
49d87452 MS |
209 | return (name); |
210 | } | |
ef416fc2 | 211 | #endif /* AF_LOCAL */ |
49d87452 | 212 | |
d2354e63 MS |
213 | /* |
214 | * Optimize lookups for localhost/loopback addresses... | |
215 | */ | |
216 | ||
217 | if (httpAddrLocalhost(addr)) | |
218 | { | |
219 | strlcpy(name, "localhost", namelen); | |
220 | return (name); | |
221 | } | |
222 | ||
49d87452 MS |
223 | #ifdef HAVE_RES_INIT |
224 | /* | |
225 | * STR #2920: Initialize resolver after failure in cups-polld | |
226 | * | |
227 | * If the previous lookup failed, re-initialize the resolver to prevent | |
228 | * temporary network errors from persisting. This *should* be handled by | |
229 | * the resolver libraries, but apparently the glibc folks do not agree. | |
230 | * | |
231 | * We set a flag at the end of this function if we encounter an error that | |
232 | * requires reinitialization of the resolver functions. We then call | |
233 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
234 | */ | |
235 | ||
236 | if (cg->need_res_init) | |
237 | { | |
238 | res_init(); | |
239 | ||
240 | cg->need_res_init = 0; | |
241 | } | |
242 | #endif /* HAVE_RES_INIT */ | |
243 | ||
ef416fc2 | 244 | #ifdef HAVE_GETNAMEINFO |
245 | { | |
db1f069b MS |
246 | /* |
247 | * STR #2486: httpAddrLookup() fails when getnameinfo() returns EAI_AGAIN | |
248 | * | |
249 | * FWIW, I think this is really a bug in the implementation of | |
250 | * getnameinfo(), but falling back on httpAddrString() is easy to | |
251 | * do... | |
252 | */ | |
ef416fc2 | 253 | |
49d87452 MS |
254 | int error = getnameinfo(&addr->addr, httpAddrLength(addr), name, namelen, |
255 | NULL, 0, 0); | |
256 | ||
257 | if (error) | |
258 | { | |
259 | if (error == EAI_FAIL) | |
260 | cg->need_res_init = 1; | |
261 | ||
db1f069b | 262 | return (httpAddrString(addr, name, namelen)); |
49d87452 | 263 | } |
ef416fc2 | 264 | } |
265 | #else | |
266 | { | |
267 | struct hostent *host; /* Host from name service */ | |
268 | ||
269 | ||
270 | # ifdef AF_INET6 | |
271 | if (addr->addr.sa_family == AF_INET6) | |
272 | host = gethostbyaddr(ADDR_CAST &(addr->ipv6.sin6_addr), | |
273 | sizeof(struct in_addr), AF_INET6); | |
274 | else | |
275 | # endif /* AF_INET6 */ | |
276 | host = gethostbyaddr(ADDR_CAST &(addr->ipv4.sin_addr), | |
277 | sizeof(struct in_addr), AF_INET); | |
278 | ||
279 | if (host == NULL) | |
280 | { | |
281 | /* | |
282 | * No hostname, so return the raw address... | |
283 | */ | |
284 | ||
49d87452 MS |
285 | if (h_errno == NO_RECOVERY) |
286 | cg->need_res_init = 1; | |
287 | ||
288 | return (httpAddrString(addr, name, namelen)); | |
ef416fc2 | 289 | } |
290 | ||
291 | strlcpy(name, host->h_name, namelen); | |
292 | } | |
293 | #endif /* HAVE_GETNAMEINFO */ | |
294 | ||
e07d4801 MS |
295 | DEBUG_printf(("1httpAddrLookup: returning \"%s\"...", name)); |
296 | ||
ef416fc2 | 297 | return (name); |
298 | } | |
299 | ||
300 | ||
1ff0402e MS |
301 | /* |
302 | * '_httpAddrPort()' - Get the port number associated with an address. | |
303 | */ | |
304 | ||
305 | int /* O - Port number */ | |
306 | _httpAddrPort(http_addr_t *addr) /* I - Address */ | |
307 | { | |
5f64df29 MS |
308 | if (!addr) |
309 | return (ippPort()); | |
1ff0402e | 310 | #ifdef AF_INET6 |
5f64df29 | 311 | else if (addr->addr.sa_family == AF_INET6) |
1ff0402e | 312 | return (ntohs(addr->ipv6.sin6_port)); |
1ff0402e | 313 | #endif /* AF_INET6 */ |
5f64df29 | 314 | else if (addr->addr.sa_family == AF_INET) |
1ff0402e MS |
315 | return (ntohs(addr->ipv4.sin_port)); |
316 | else | |
317 | return (ippPort()); | |
318 | } | |
319 | ||
320 | ||
22c9029b MS |
321 | /* |
322 | * '_httpAddrSetPort()' - Set the port number associated with an address. | |
323 | */ | |
324 | ||
325 | void | |
326 | _httpAddrSetPort(http_addr_t *addr, /* I - Address */ | |
327 | int port) /* I - Port */ | |
328 | { | |
329 | if (!addr || port <= 0) | |
330 | return; | |
331 | ||
332 | #ifdef AF_INET6 | |
333 | if (addr->addr.sa_family == AF_INET6) | |
334 | addr->ipv6.sin6_port = htons(port); | |
335 | else | |
336 | #endif /* AF_INET6 */ | |
337 | if (addr->addr.sa_family == AF_INET) | |
338 | addr->ipv4.sin_port = htons(port); | |
339 | } | |
340 | ||
341 | ||
ef416fc2 | 342 | /* |
ecdc0628 | 343 | * 'httpAddrString()' - Convert an address to a numeric string. |
ef416fc2 | 344 | * |
426c6a59 | 345 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 346 | */ |
347 | ||
ecdc0628 | 348 | char * /* O - Numeric address string */ |
349 | httpAddrString(const http_addr_t *addr, /* I - Address to convert */ | |
350 | char *s, /* I - String buffer */ | |
351 | int slen) /* I - Length of string */ | |
ef416fc2 | 352 | { |
e07d4801 | 353 | DEBUG_printf(("httpAddrString(addr=%p, s=%p, slen=%d)", addr, s, slen)); |
ef416fc2 | 354 | |
355 | /* | |
356 | * Range check input... | |
357 | */ | |
358 | ||
359 | if (!addr || !s || slen <= 2) | |
360 | { | |
361 | if (s && slen >= 1) | |
362 | *s = '\0'; | |
363 | ||
364 | return (NULL); | |
365 | } | |
366 | ||
367 | #ifdef AF_LOCAL | |
368 | if (addr->addr.sa_family == AF_LOCAL) | |
369 | strlcpy(s, addr->un.sun_path, slen); | |
370 | else | |
371 | #endif /* AF_LOCAL */ | |
b423cd4c | 372 | if (addr->addr.sa_family == AF_INET) |
ef416fc2 | 373 | { |
b423cd4c | 374 | unsigned temp; /* Temporary address */ |
ef416fc2 | 375 | |
376 | ||
b423cd4c | 377 | temp = ntohl(addr->ipv4.sin_addr.s_addr); |
378 | ||
379 | snprintf(s, slen, "%d.%d.%d.%d", (temp >> 24) & 255, | |
380 | (temp >> 16) & 255, (temp >> 8) & 255, temp & 255); | |
381 | } | |
382 | #ifdef AF_INET6 | |
383 | else if (addr->addr.sa_family == AF_INET6) | |
384 | { | |
82f97232 MS |
385 | char *sptr, /* Pointer into string */ |
386 | temps[64]; /* Temporary string for address */ | |
387 | ||
b423cd4c | 388 | # ifdef HAVE_GETNAMEINFO |
82f97232 | 389 | if (getnameinfo(&addr->addr, httpAddrLength(addr), temps, sizeof(temps), |
b423cd4c | 390 | NULL, 0, NI_NUMERICHOST)) |
ef416fc2 | 391 | { |
392 | /* | |
393 | * If we get an error back, then the address type is not supported | |
394 | * and we should zero out the buffer... | |
395 | */ | |
396 | ||
397 | s[0] = '\0'; | |
398 | ||
399 | return (NULL); | |
400 | } | |
82f97232 MS |
401 | else if ((sptr = strchr(temps, '%')) != NULL) |
402 | { | |
403 | /* | |
404 | * Convert "%zone" to "+zone" to match URI form... | |
405 | */ | |
406 | ||
407 | *sptr = '+'; | |
408 | } | |
409 | ||
b423cd4c | 410 | # else |
b423cd4c | 411 | int i; /* Looping var */ |
412 | unsigned temp; /* Current value */ | |
413 | const char *prefix; /* Prefix for address */ | |
414 | ||
415 | ||
416 | prefix = ""; | |
82f97232 | 417 | for (sptr = temps, i = 0; i < 4 && addr->ipv6.sin6_addr.s6_addr32[i]; i ++) |
ef416fc2 | 418 | { |
b423cd4c | 419 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 420 | |
82f97232 MS |
421 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
422 | (temp >> 16) & 0xffff); | |
b423cd4c | 423 | prefix = ":"; |
b423cd4c | 424 | sptr += strlen(sptr); |
ef416fc2 | 425 | |
b423cd4c | 426 | temp &= 0xffff; |
ef416fc2 | 427 | |
b423cd4c | 428 | if (temp || i == 3 || addr->ipv6.sin6_addr.s6_addr32[i + 1]) |
429 | { | |
82f97232 | 430 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, temp); |
ef416fc2 | 431 | sptr += strlen(sptr); |
ef416fc2 | 432 | } |
b423cd4c | 433 | } |
434 | ||
435 | if (i < 4) | |
436 | { | |
437 | while (i < 4 && !addr->ipv6.sin6_addr.s6_addr32[i]) | |
438 | i ++; | |
ef416fc2 | 439 | |
440 | if (i < 4) | |
441 | { | |
82f97232 | 442 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s:", prefix); |
b423cd4c | 443 | prefix = ":"; |
b423cd4c | 444 | sptr += strlen(sptr); |
ef416fc2 | 445 | |
b423cd4c | 446 | for (; i < 4; i ++) |
ef416fc2 | 447 | { |
b423cd4c | 448 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 449 | |
82f97232 MS |
450 | if ((temp & 0xffff0000) || |
451 | (i > 0 && addr->ipv6.sin6_addr.s6_addr32[i - 1])) | |
ef416fc2 | 452 | { |
82f97232 MS |
453 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
454 | (temp >> 16) & 0xffff); | |
ef416fc2 | 455 | sptr += strlen(sptr); |
b423cd4c | 456 | } |
ef416fc2 | 457 | |
82f97232 MS |
458 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
459 | temp & 0xffff); | |
b423cd4c | 460 | sptr += strlen(sptr); |
ef416fc2 | 461 | } |
462 | } | |
b423cd4c | 463 | else if (sptr == s) |
464 | { | |
465 | /* | |
466 | * Empty address... | |
467 | */ | |
ef416fc2 | 468 | |
82f97232 | 469 | strlcpy(temps, "::", sizeof(temps)); |
b423cd4c | 470 | } |
471 | else | |
472 | { | |
473 | /* | |
474 | * Empty at end... | |
475 | */ | |
ef416fc2 | 476 | |
82f97232 | 477 | strlcpy(sptr, "::", sizeof(temps) - (sptr - temps)); |
b423cd4c | 478 | } |
ef416fc2 | 479 | } |
b423cd4c | 480 | # endif /* HAVE_GETNAMEINFO */ |
82f97232 MS |
481 | |
482 | /* | |
483 | * Add "[v1." and "]" around IPv6 address to convert to URI form. | |
484 | */ | |
485 | ||
486 | snprintf(s, slen, "[v1.%s]", temps); | |
ef416fc2 | 487 | } |
b423cd4c | 488 | #endif /* AF_INET6 */ |
489 | else | |
490 | strlcpy(s, "UNKNOWN", slen); | |
ef416fc2 | 491 | |
e07d4801 | 492 | DEBUG_printf(("1httpAddrString: returning \"%s\"...", s)); |
ef416fc2 | 493 | |
494 | return (s); | |
495 | } | |
496 | ||
497 | ||
498 | /* | |
499 | * 'httpGetHostByName()' - Lookup a hostname or IPv4 address, and return | |
500 | * address records for the specified name. | |
501 | * | |
502 | * @deprecated@ | |
503 | */ | |
504 | ||
505 | struct hostent * /* O - Host entry */ | |
506 | httpGetHostByName(const char *name) /* I - Hostname or IP address */ | |
507 | { | |
508 | const char *nameptr; /* Pointer into name */ | |
509 | unsigned ip[4]; /* IP address components */ | |
510 | _cups_globals_t *cg = _cupsGlobals(); | |
511 | /* Pointer to library globals */ | |
512 | ||
513 | ||
e07d4801 | 514 | DEBUG_printf(("httpGetHostByName(name=\"%s\")", name)); |
ef416fc2 | 515 | |
516 | /* | |
517 | * Avoid lookup delays and configuration problems when connecting | |
518 | * to the localhost address... | |
519 | */ | |
520 | ||
521 | if (!strcmp(name, "localhost")) | |
522 | name = "127.0.0.1"; | |
523 | ||
524 | /* | |
525 | * This function is needed because some operating systems have a | |
526 | * buggy implementation of gethostbyname() that does not support | |
527 | * IP addresses. If the first character of the name string is a | |
528 | * number, then sscanf() is used to extract the IP components. | |
529 | * We then pack the components into an IPv4 address manually, | |
530 | * since the inet_aton() function is deprecated. We use the | |
531 | * htonl() macro to get the right byte order for the address. | |
532 | * | |
533 | * We also support domain sockets when supported by the underlying | |
534 | * OS... | |
535 | */ | |
536 | ||
537 | #ifdef AF_LOCAL | |
538 | if (name[0] == '/') | |
539 | { | |
540 | /* | |
541 | * A domain socket address, so make an AF_LOCAL entry and return it... | |
542 | */ | |
543 | ||
544 | cg->hostent.h_name = (char *)name; | |
545 | cg->hostent.h_aliases = NULL; | |
546 | cg->hostent.h_addrtype = AF_LOCAL; | |
547 | cg->hostent.h_length = strlen(name) + 1; | |
548 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
549 | cg->ip_ptrs[0] = (char *)name; | |
550 | cg->ip_ptrs[1] = NULL; | |
551 | ||
e07d4801 | 552 | DEBUG_puts("1httpGetHostByName: returning domain socket address..."); |
ef416fc2 | 553 | |
554 | return (&cg->hostent); | |
555 | } | |
556 | #endif /* AF_LOCAL */ | |
557 | ||
558 | for (nameptr = name; isdigit(*nameptr & 255) || *nameptr == '.'; nameptr ++); | |
559 | ||
560 | if (!*nameptr) | |
561 | { | |
562 | /* | |
563 | * We have an IPv4 address; break it up and provide the host entry | |
564 | * to the caller. | |
565 | */ | |
566 | ||
567 | if (sscanf(name, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) | |
568 | return (NULL); /* Must have 4 numbers */ | |
569 | ||
570 | if (ip[0] > 255 || ip[1] > 255 || ip[2] > 255 || ip[3] > 255) | |
571 | return (NULL); /* Invalid byte ranges! */ | |
572 | ||
573 | cg->ip_addr = htonl(((((((ip[0] << 8) | ip[1]) << 8) | ip[2]) << 8) | | |
574 | ip[3])); | |
575 | ||
576 | /* | |
577 | * Fill in the host entry and return it... | |
578 | */ | |
579 | ||
580 | cg->hostent.h_name = (char *)name; | |
581 | cg->hostent.h_aliases = NULL; | |
582 | cg->hostent.h_addrtype = AF_INET; | |
583 | cg->hostent.h_length = 4; | |
584 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
585 | cg->ip_ptrs[0] = (char *)&(cg->ip_addr); | |
586 | cg->ip_ptrs[1] = NULL; | |
587 | ||
e07d4801 | 588 | DEBUG_puts("1httpGetHostByName: returning IPv4 address..."); |
ef416fc2 | 589 | |
590 | return (&cg->hostent); | |
591 | } | |
592 | else | |
593 | { | |
594 | /* | |
595 | * Use the gethostbyname() function to get the IPv4 address for | |
596 | * the name... | |
597 | */ | |
598 | ||
e07d4801 | 599 | DEBUG_puts("1httpGetHostByName: returning domain lookup address(es)..."); |
ef416fc2 | 600 | |
601 | return (gethostbyname(name)); | |
602 | } | |
603 | } | |
604 | ||
605 | ||
606 | /* | |
757d2cad | 607 | * 'httpGetHostname()' - Get the FQDN for the connection or local system. |
ef416fc2 | 608 | * |
757d2cad | 609 | * When "http" points to a connected socket, return the hostname or |
610 | * address that was used in the call to httpConnect() or httpConnectEncrypt(). | |
611 | * Otherwise, return the FQDN for the local system using both gethostname() | |
612 | * and gethostbyname() to get the local hostname with domain. | |
ef416fc2 | 613 | * |
426c6a59 | 614 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 615 | */ |
616 | ||
757d2cad | 617 | const char * /* O - FQDN for connection or system */ |
618 | httpGetHostname(http_t *http, /* I - HTTP connection or NULL */ | |
619 | char *s, /* I - String buffer for name */ | |
620 | int slen) /* I - Size of buffer */ | |
ef416fc2 | 621 | { |
89d46774 | 622 | if (!s || slen <= 1) |
623 | return (NULL); | |
624 | ||
757d2cad | 625 | if (http) |
480ef0fe | 626 | { |
627 | if (http->hostname[0] == '/') | |
628 | strlcpy(s, "localhost", slen); | |
629 | else | |
630 | strlcpy(s, http->hostname, slen); | |
631 | } | |
757d2cad | 632 | else |
ef416fc2 | 633 | { |
634 | /* | |
757d2cad | 635 | * Get the hostname... |
ef416fc2 | 636 | */ |
637 | ||
89d46774 | 638 | if (gethostname(s, slen) < 0) |
639 | strlcpy(s, "localhost", slen); | |
757d2cad | 640 | |
641 | if (!strchr(s, '.')) | |
642 | { | |
0837b7e8 | 643 | #ifdef HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME |
1106b00e MS |
644 | /* |
645 | * The hostname is not a FQDN, so use the local hostname from the | |
646 | * SystemConfiguration framework... | |
647 | */ | |
648 | ||
649 | SCDynamicStoreRef sc = SCDynamicStoreCreate(kCFAllocatorDefault, | |
650 | CFSTR("libcups"), NULL, NULL); | |
651 | /* System configuration data */ | |
652 | CFStringRef local = sc ? SCDynamicStoreCopyLocalHostName(sc) : NULL; | |
653 | /* Local host name */ | |
654 | char localStr[1024]; /* Local host name C string */ | |
655 | ||
656 | if (local && CFStringGetCString(local, localStr, sizeof(localStr), | |
657 | kCFStringEncodingUTF8)) | |
658 | { | |
659 | /* | |
660 | * Append ".local." to the hostname we get... | |
661 | */ | |
662 | ||
663 | snprintf(s, slen, "%s.local.", localStr); | |
664 | } | |
665 | ||
666 | if (local) | |
667 | CFRelease(local); | |
668 | if (sc) | |
669 | CFRelease(sc); | |
670 | ||
671 | #else | |
757d2cad | 672 | /* |
673 | * The hostname is not a FQDN, so look it up... | |
674 | */ | |
675 | ||
1106b00e MS |
676 | struct hostent *host; /* Host entry to get FQDN */ |
677 | ||
89d46774 | 678 | if ((host = gethostbyname(s)) != NULL && host->h_name) |
1106b00e MS |
679 | { |
680 | /* | |
681 | * Use the resolved hostname... | |
682 | */ | |
683 | ||
757d2cad | 684 | strlcpy(s, host->h_name, slen); |
1106b00e | 685 | } |
0837b7e8 | 686 | #endif /* HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME */ |
757d2cad | 687 | } |
ef416fc2 | 688 | } |
689 | ||
690 | /* | |
691 | * Return the hostname with as much domain info as we have... | |
692 | */ | |
693 | ||
694 | return (s); | |
695 | } | |
696 | ||
697 | ||
698 | /* | |
b19ccc9e | 699 | * End of "$Id: http-addr.c 7910 2008-09-06 00:25:17Z mike $". |
ef416fc2 | 700 | */ |