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Commit | Line | Data |
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ef416fc2 | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
71e16022 | 4 | * HTTP address routines for CUPS. |
ef416fc2 | 5 | * |
6961465f | 6 | * Copyright 2007-2013 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 | * | |
a469f8a5 MS |
17 | * httpAddrAny() - Check for the "any" address. |
18 | * httpAddrEqual() - Compare two addresses. | |
19 | * httpAddrLength() - Return the length of the address in bytes. | |
20 | * httpAddrListen() - Create a listening socket bound to the specified | |
21 | * address and port. | |
ef416fc2 | 22 | * httpAddrLocalhost() - Check for the local loopback address. |
a469f8a5 MS |
23 | * httpAddrLookup() - Lookup the hostname associated with the address. |
24 | * httpAddrPort() - Get the port number associated with an address. | |
22c9029b | 25 | * _httpAddrSetPort() - Set the port number associated with an address. |
a469f8a5 MS |
26 | * httpAddrString() - Convert an address to a numeric string. |
27 | * httpGetHostByName() - Lookup a hostname or IPv4 address, and return | |
28 | * address records for the specified name. | |
29 | * httpGetHostname() - Get the FQDN for the connection or local system. | |
ef416fc2 | 30 | */ |
31 | ||
32 | /* | |
33 | * Include necessary headers... | |
34 | */ | |
35 | ||
71e16022 | 36 | #include "cups-private.h" |
49d87452 MS |
37 | #ifdef HAVE_RESOLV_H |
38 | # include <resolv.h> | |
39 | #endif /* HAVE_RESOLV_H */ | |
a29fd7dd | 40 | #ifdef __APPLE__ |
1106b00e | 41 | # include <CoreFoundation/CoreFoundation.h> |
1106b00e | 42 | # include <SystemConfiguration/SystemConfiguration.h> |
a29fd7dd | 43 | #endif /* __APPLE__ */ |
ef416fc2 | 44 | |
45 | ||
46 | /* | |
47 | * 'httpAddrAny()' - Check for the "any" address. | |
48 | * | |
f3c17241 | 49 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 50 | */ |
51 | ||
52 | int /* O - 1 if "any", 0 otherwise */ | |
53 | httpAddrAny(const http_addr_t *addr) /* I - Address to check */ | |
54 | { | |
89d46774 | 55 | if (!addr) |
56 | return (0); | |
57 | ||
ef416fc2 | 58 | #ifdef AF_INET6 |
59 | if (addr->addr.sa_family == AF_INET6 && | |
60 | IN6_IS_ADDR_UNSPECIFIED(&(addr->ipv6.sin6_addr))) | |
61 | return (1); | |
62 | #endif /* AF_INET6 */ | |
63 | ||
64 | if (addr->addr.sa_family == AF_INET && | |
65 | ntohl(addr->ipv4.sin_addr.s_addr) == 0x00000000) | |
66 | return (1); | |
67 | ||
68 | return (0); | |
69 | } | |
70 | ||
71 | ||
72 | /* | |
73 | * 'httpAddrEqual()' - Compare two addresses. | |
74 | * | |
f3c17241 | 75 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 76 | */ |
77 | ||
ecdc0628 | 78 | int /* O - 1 if equal, 0 if not */ |
ef416fc2 | 79 | httpAddrEqual(const http_addr_t *addr1, /* I - First address */ |
80 | const http_addr_t *addr2) /* I - Second address */ | |
81 | { | |
89d46774 | 82 | if (!addr1 && !addr2) |
83 | return (1); | |
84 | ||
85 | if (!addr1 || !addr2) | |
86 | return (0); | |
87 | ||
ef416fc2 | 88 | if (addr1->addr.sa_family != addr2->addr.sa_family) |
89 | return (0); | |
90 | ||
91 | #ifdef AF_LOCAL | |
92 | if (addr1->addr.sa_family == AF_LOCAL) | |
93 | return (!strcmp(addr1->un.sun_path, addr2->un.sun_path)); | |
94 | #endif /* AF_LOCAL */ | |
95 | ||
96 | #ifdef AF_INET6 | |
97 | if (addr1->addr.sa_family == AF_INET6) | |
98 | return (!memcmp(&(addr1->ipv6.sin6_addr), &(addr2->ipv6.sin6_addr), 16)); | |
99 | #endif /* AF_INET6 */ | |
100 | ||
101 | return (addr1->ipv4.sin_addr.s_addr == addr2->ipv4.sin_addr.s_addr); | |
102 | } | |
103 | ||
104 | ||
105 | /* | |
106 | * 'httpAddrLength()' - Return the length of the address in bytes. | |
107 | * | |
f3c17241 | 108 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 109 | */ |
110 | ||
111 | int /* O - Length in bytes */ | |
112 | httpAddrLength(const http_addr_t *addr) /* I - Address */ | |
113 | { | |
89d46774 | 114 | if (!addr) |
115 | return (0); | |
116 | ||
ef416fc2 | 117 | #ifdef AF_INET6 |
118 | if (addr->addr.sa_family == AF_INET6) | |
119 | return (sizeof(addr->ipv6)); | |
120 | else | |
121 | #endif /* AF_INET6 */ | |
122 | #ifdef AF_LOCAL | |
123 | if (addr->addr.sa_family == AF_LOCAL) | |
124 | return (offsetof(struct sockaddr_un, sun_path) + | |
125 | strlen(addr->un.sun_path) + 1); | |
126 | else | |
127 | #endif /* AF_LOCAL */ | |
128 | if (addr->addr.sa_family == AF_INET) | |
129 | return (sizeof(addr->ipv4)); | |
130 | else | |
131 | return (0); | |
132 | ||
133 | } | |
134 | ||
135 | ||
a469f8a5 MS |
136 | /* |
137 | * 'httpAddrListen()' - Create a listening socket bound to the specified | |
138 | * address and port. | |
139 | * | |
9c0e8e5d | 140 | * @since CUPS 1.7/OS X 10.9@ |
a469f8a5 MS |
141 | */ |
142 | ||
143 | int /* O - Socket or -1 on error */ | |
144 | httpAddrListen(http_addr_t *addr, /* I - Address to bind to */ | |
145 | int port) /* I - Port number to bind to */ | |
146 | { | |
147 | int fd = -1, /* Socket */ | |
148 | val; /* Socket value */ | |
149 | ||
150 | ||
151 | /* | |
152 | * Range check input... | |
153 | */ | |
154 | ||
155 | if (!addr || port <= 0) | |
156 | return (-1); | |
157 | ||
158 | if ((fd = socket(addr->addr.sa_family, SOCK_STREAM, 0)) < 0) | |
159 | { | |
160 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
161 | return (-1); | |
162 | } | |
163 | ||
164 | val = 1; | |
db8b865d | 165 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
166 | |
167 | #ifdef IPV6_V6ONLY | |
168 | if (addr->addr.sa_family == AF_INET6) | |
db8b865d | 169 | setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
170 | #endif /* IPV6_V6ONLY */ |
171 | ||
172 | _httpAddrSetPort(addr, port); | |
173 | ||
174 | if (bind(fd, (struct sockaddr *)addr, httpAddrLength(addr))) | |
175 | { | |
176 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
177 | ||
178 | close(fd); | |
179 | ||
180 | return (-1); | |
181 | } | |
182 | ||
183 | if (listen(fd, 5)) | |
184 | { | |
185 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
186 | ||
187 | close(fd); | |
188 | ||
189 | return (-1); | |
190 | } | |
191 | ||
192 | #ifdef SO_NOSIGPIPE | |
193 | /* | |
194 | * Disable SIGPIPE for this socket. | |
195 | */ | |
196 | ||
197 | val = 1; | |
db8b865d | 198 | setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
199 | #endif /* SO_NOSIGPIPE */ |
200 | ||
201 | return (fd); | |
202 | } | |
203 | ||
204 | ||
ef416fc2 | 205 | /* |
206 | * 'httpAddrLocalhost()' - Check for the local loopback address. | |
207 | * | |
f3c17241 | 208 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 209 | */ |
210 | ||
211 | int /* O - 1 if local host, 0 otherwise */ | |
212 | httpAddrLocalhost( | |
213 | const http_addr_t *addr) /* I - Address to check */ | |
214 | { | |
89d46774 | 215 | if (!addr) |
216 | return (1); | |
217 | ||
ef416fc2 | 218 | #ifdef AF_INET6 |
219 | if (addr->addr.sa_family == AF_INET6 && | |
fa73b229 | 220 | IN6_IS_ADDR_LOOPBACK(&(addr->ipv6.sin6_addr))) |
ef416fc2 | 221 | return (1); |
222 | #endif /* AF_INET6 */ | |
223 | ||
224 | #ifdef AF_LOCAL | |
225 | if (addr->addr.sa_family == AF_LOCAL) | |
226 | return (1); | |
227 | #endif /* AF_LOCAL */ | |
228 | ||
229 | if (addr->addr.sa_family == AF_INET && | |
e07d4801 | 230 | (ntohl(addr->ipv4.sin_addr.s_addr) & 0xff000000) == 0x7f000000) |
ef416fc2 | 231 | return (1); |
232 | ||
233 | return (0); | |
234 | } | |
235 | ||
236 | ||
ef416fc2 | 237 | /* |
238 | * 'httpAddrLookup()' - Lookup the hostname associated with the address. | |
239 | * | |
f3c17241 | 240 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 241 | */ |
242 | ||
ecdc0628 | 243 | char * /* O - Host name */ |
244 | httpAddrLookup( | |
245 | const http_addr_t *addr, /* I - Address to lookup */ | |
246 | char *name, /* I - Host name buffer */ | |
247 | int namelen) /* I - Size of name buffer */ | |
ef416fc2 | 248 | { |
49d87452 MS |
249 | _cups_globals_t *cg = _cupsGlobals(); |
250 | /* Global data */ | |
251 | ||
252 | ||
e07d4801 MS |
253 | DEBUG_printf(("httpAddrLookup(addr=%p, name=%p, namelen=%d)", addr, name, |
254 | namelen)); | |
ef416fc2 | 255 | |
256 | /* | |
257 | * Range check input... | |
258 | */ | |
259 | ||
260 | if (!addr || !name || namelen <= 2) | |
261 | { | |
262 | if (name && namelen >= 1) | |
263 | *name = '\0'; | |
264 | ||
265 | return (NULL); | |
266 | } | |
267 | ||
268 | #ifdef AF_LOCAL | |
269 | if (addr->addr.sa_family == AF_LOCAL) | |
49d87452 | 270 | { |
ef416fc2 | 271 | strlcpy(name, addr->un.sun_path, namelen); |
49d87452 MS |
272 | return (name); |
273 | } | |
ef416fc2 | 274 | #endif /* AF_LOCAL */ |
49d87452 | 275 | |
d2354e63 MS |
276 | /* |
277 | * Optimize lookups for localhost/loopback addresses... | |
278 | */ | |
279 | ||
280 | if (httpAddrLocalhost(addr)) | |
281 | { | |
282 | strlcpy(name, "localhost", namelen); | |
283 | return (name); | |
284 | } | |
285 | ||
49d87452 MS |
286 | #ifdef HAVE_RES_INIT |
287 | /* | |
288 | * STR #2920: Initialize resolver after failure in cups-polld | |
289 | * | |
290 | * If the previous lookup failed, re-initialize the resolver to prevent | |
291 | * temporary network errors from persisting. This *should* be handled by | |
292 | * the resolver libraries, but apparently the glibc folks do not agree. | |
293 | * | |
294 | * We set a flag at the end of this function if we encounter an error that | |
295 | * requires reinitialization of the resolver functions. We then call | |
296 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
297 | */ | |
298 | ||
299 | if (cg->need_res_init) | |
300 | { | |
301 | res_init(); | |
302 | ||
303 | cg->need_res_init = 0; | |
304 | } | |
305 | #endif /* HAVE_RES_INIT */ | |
306 | ||
ef416fc2 | 307 | #ifdef HAVE_GETNAMEINFO |
308 | { | |
db1f069b MS |
309 | /* |
310 | * STR #2486: httpAddrLookup() fails when getnameinfo() returns EAI_AGAIN | |
311 | * | |
312 | * FWIW, I think this is really a bug in the implementation of | |
313 | * getnameinfo(), but falling back on httpAddrString() is easy to | |
314 | * do... | |
315 | */ | |
ef416fc2 | 316 | |
49d87452 MS |
317 | int error = getnameinfo(&addr->addr, httpAddrLength(addr), name, namelen, |
318 | NULL, 0, 0); | |
319 | ||
320 | if (error) | |
321 | { | |
322 | if (error == EAI_FAIL) | |
323 | cg->need_res_init = 1; | |
324 | ||
db1f069b | 325 | return (httpAddrString(addr, name, namelen)); |
49d87452 | 326 | } |
ef416fc2 | 327 | } |
328 | #else | |
329 | { | |
330 | struct hostent *host; /* Host from name service */ | |
331 | ||
332 | ||
333 | # ifdef AF_INET6 | |
334 | if (addr->addr.sa_family == AF_INET6) | |
3dd9c340 | 335 | host = gethostbyaddr((char *)&(addr->ipv6.sin6_addr), |
ef416fc2 | 336 | sizeof(struct in_addr), AF_INET6); |
337 | else | |
338 | # endif /* AF_INET6 */ | |
3dd9c340 | 339 | host = gethostbyaddr((char *)&(addr->ipv4.sin_addr), |
ef416fc2 | 340 | sizeof(struct in_addr), AF_INET); |
341 | ||
342 | if (host == NULL) | |
343 | { | |
344 | /* | |
345 | * No hostname, so return the raw address... | |
346 | */ | |
347 | ||
49d87452 MS |
348 | if (h_errno == NO_RECOVERY) |
349 | cg->need_res_init = 1; | |
350 | ||
351 | return (httpAddrString(addr, name, namelen)); | |
ef416fc2 | 352 | } |
353 | ||
354 | strlcpy(name, host->h_name, namelen); | |
355 | } | |
356 | #endif /* HAVE_GETNAMEINFO */ | |
357 | ||
e07d4801 MS |
358 | DEBUG_printf(("1httpAddrLookup: returning \"%s\"...", name)); |
359 | ||
ef416fc2 | 360 | return (name); |
361 | } | |
362 | ||
363 | ||
1ff0402e | 364 | /* |
a469f8a5 MS |
365 | * 'httpAddrPort()' - Get the port number associated with an address. |
366 | * | |
9c0e8e5d | 367 | * @since CUPS 1.7/OS X 10.9@ |
1ff0402e MS |
368 | */ |
369 | ||
370 | int /* O - Port number */ | |
a469f8a5 | 371 | httpAddrPort(http_addr_t *addr) /* I - Address */ |
1ff0402e | 372 | { |
5f64df29 MS |
373 | if (!addr) |
374 | return (ippPort()); | |
1ff0402e | 375 | #ifdef AF_INET6 |
5f64df29 | 376 | else if (addr->addr.sa_family == AF_INET6) |
1ff0402e | 377 | return (ntohs(addr->ipv6.sin6_port)); |
1ff0402e | 378 | #endif /* AF_INET6 */ |
5f64df29 | 379 | else if (addr->addr.sa_family == AF_INET) |
1ff0402e MS |
380 | return (ntohs(addr->ipv4.sin_port)); |
381 | else | |
382 | return (ippPort()); | |
383 | } | |
384 | ||
c1420c87 MS |
385 | /* For OS X 10.8 and earlier */ |
386 | int _httpAddrPort(http_addr_t *addr) { return (httpAddrPort(addr)); } | |
387 | ||
1ff0402e | 388 | |
22c9029b MS |
389 | /* |
390 | * '_httpAddrSetPort()' - Set the port number associated with an address. | |
391 | */ | |
392 | ||
393 | void | |
394 | _httpAddrSetPort(http_addr_t *addr, /* I - Address */ | |
395 | int port) /* I - Port */ | |
396 | { | |
397 | if (!addr || port <= 0) | |
398 | return; | |
399 | ||
400 | #ifdef AF_INET6 | |
401 | if (addr->addr.sa_family == AF_INET6) | |
402 | addr->ipv6.sin6_port = htons(port); | |
403 | else | |
404 | #endif /* AF_INET6 */ | |
405 | if (addr->addr.sa_family == AF_INET) | |
406 | addr->ipv4.sin_port = htons(port); | |
407 | } | |
408 | ||
409 | ||
ef416fc2 | 410 | /* |
ecdc0628 | 411 | * 'httpAddrString()' - Convert an address to a numeric string. |
ef416fc2 | 412 | * |
f3c17241 | 413 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 414 | */ |
415 | ||
ecdc0628 | 416 | char * /* O - Numeric address string */ |
417 | httpAddrString(const http_addr_t *addr, /* I - Address to convert */ | |
418 | char *s, /* I - String buffer */ | |
419 | int slen) /* I - Length of string */ | |
ef416fc2 | 420 | { |
e07d4801 | 421 | DEBUG_printf(("httpAddrString(addr=%p, s=%p, slen=%d)", addr, s, slen)); |
ef416fc2 | 422 | |
423 | /* | |
424 | * Range check input... | |
425 | */ | |
426 | ||
427 | if (!addr || !s || slen <= 2) | |
428 | { | |
429 | if (s && slen >= 1) | |
430 | *s = '\0'; | |
431 | ||
432 | return (NULL); | |
433 | } | |
434 | ||
435 | #ifdef AF_LOCAL | |
436 | if (addr->addr.sa_family == AF_LOCAL) | |
771bd8cb MS |
437 | { |
438 | if (addr->un.sun_path[0] == '/') | |
439 | strlcpy(s, addr->un.sun_path, slen); | |
440 | else | |
441 | strlcpy(s, "localhost", slen); | |
442 | } | |
ef416fc2 | 443 | else |
444 | #endif /* AF_LOCAL */ | |
b423cd4c | 445 | if (addr->addr.sa_family == AF_INET) |
ef416fc2 | 446 | { |
b423cd4c | 447 | unsigned temp; /* Temporary address */ |
ef416fc2 | 448 | |
449 | ||
b423cd4c | 450 | temp = ntohl(addr->ipv4.sin_addr.s_addr); |
451 | ||
452 | snprintf(s, slen, "%d.%d.%d.%d", (temp >> 24) & 255, | |
453 | (temp >> 16) & 255, (temp >> 8) & 255, temp & 255); | |
454 | } | |
455 | #ifdef AF_INET6 | |
456 | else if (addr->addr.sa_family == AF_INET6) | |
457 | { | |
82f97232 MS |
458 | char *sptr, /* Pointer into string */ |
459 | temps[64]; /* Temporary string for address */ | |
460 | ||
b423cd4c | 461 | # ifdef HAVE_GETNAMEINFO |
82f97232 | 462 | if (getnameinfo(&addr->addr, httpAddrLength(addr), temps, sizeof(temps), |
b423cd4c | 463 | NULL, 0, NI_NUMERICHOST)) |
ef416fc2 | 464 | { |
465 | /* | |
466 | * If we get an error back, then the address type is not supported | |
467 | * and we should zero out the buffer... | |
468 | */ | |
469 | ||
470 | s[0] = '\0'; | |
471 | ||
472 | return (NULL); | |
473 | } | |
82f97232 MS |
474 | else if ((sptr = strchr(temps, '%')) != NULL) |
475 | { | |
476 | /* | |
477 | * Convert "%zone" to "+zone" to match URI form... | |
478 | */ | |
479 | ||
480 | *sptr = '+'; | |
481 | } | |
482 | ||
b423cd4c | 483 | # else |
b423cd4c | 484 | int i; /* Looping var */ |
485 | unsigned temp; /* Current value */ | |
486 | const char *prefix; /* Prefix for address */ | |
487 | ||
488 | ||
489 | prefix = ""; | |
82f97232 | 490 | for (sptr = temps, i = 0; i < 4 && addr->ipv6.sin6_addr.s6_addr32[i]; i ++) |
ef416fc2 | 491 | { |
b423cd4c | 492 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 493 | |
82f97232 MS |
494 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
495 | (temp >> 16) & 0xffff); | |
b423cd4c | 496 | prefix = ":"; |
b423cd4c | 497 | sptr += strlen(sptr); |
ef416fc2 | 498 | |
b423cd4c | 499 | temp &= 0xffff; |
ef416fc2 | 500 | |
b423cd4c | 501 | if (temp || i == 3 || addr->ipv6.sin6_addr.s6_addr32[i + 1]) |
502 | { | |
82f97232 | 503 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, temp); |
ef416fc2 | 504 | sptr += strlen(sptr); |
ef416fc2 | 505 | } |
b423cd4c | 506 | } |
507 | ||
508 | if (i < 4) | |
509 | { | |
510 | while (i < 4 && !addr->ipv6.sin6_addr.s6_addr32[i]) | |
511 | i ++; | |
ef416fc2 | 512 | |
513 | if (i < 4) | |
514 | { | |
82f97232 | 515 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s:", prefix); |
b423cd4c | 516 | prefix = ":"; |
b423cd4c | 517 | sptr += strlen(sptr); |
ef416fc2 | 518 | |
b423cd4c | 519 | for (; i < 4; i ++) |
ef416fc2 | 520 | { |
b423cd4c | 521 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 522 | |
82f97232 MS |
523 | if ((temp & 0xffff0000) || |
524 | (i > 0 && addr->ipv6.sin6_addr.s6_addr32[i - 1])) | |
ef416fc2 | 525 | { |
82f97232 MS |
526 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
527 | (temp >> 16) & 0xffff); | |
ef416fc2 | 528 | sptr += strlen(sptr); |
b423cd4c | 529 | } |
ef416fc2 | 530 | |
82f97232 MS |
531 | snprintf(sptr, sizeof(temps) - (sptr - temps), "%s%x", prefix, |
532 | temp & 0xffff); | |
b423cd4c | 533 | sptr += strlen(sptr); |
ef416fc2 | 534 | } |
535 | } | |
b423cd4c | 536 | else if (sptr == s) |
537 | { | |
538 | /* | |
539 | * Empty address... | |
540 | */ | |
ef416fc2 | 541 | |
82f97232 | 542 | strlcpy(temps, "::", sizeof(temps)); |
b423cd4c | 543 | } |
544 | else | |
545 | { | |
546 | /* | |
547 | * Empty at end... | |
548 | */ | |
ef416fc2 | 549 | |
82f97232 | 550 | strlcpy(sptr, "::", sizeof(temps) - (sptr - temps)); |
b423cd4c | 551 | } |
ef416fc2 | 552 | } |
b423cd4c | 553 | # endif /* HAVE_GETNAMEINFO */ |
82f97232 MS |
554 | |
555 | /* | |
556 | * Add "[v1." and "]" around IPv6 address to convert to URI form. | |
557 | */ | |
558 | ||
559 | snprintf(s, slen, "[v1.%s]", temps); | |
ef416fc2 | 560 | } |
b423cd4c | 561 | #endif /* AF_INET6 */ |
562 | else | |
563 | strlcpy(s, "UNKNOWN", slen); | |
ef416fc2 | 564 | |
e07d4801 | 565 | DEBUG_printf(("1httpAddrString: returning \"%s\"...", s)); |
ef416fc2 | 566 | |
567 | return (s); | |
568 | } | |
569 | ||
570 | ||
571 | /* | |
572 | * 'httpGetHostByName()' - Lookup a hostname or IPv4 address, and return | |
573 | * address records for the specified name. | |
574 | * | |
575 | * @deprecated@ | |
576 | */ | |
577 | ||
578 | struct hostent * /* O - Host entry */ | |
579 | httpGetHostByName(const char *name) /* I - Hostname or IP address */ | |
580 | { | |
581 | const char *nameptr; /* Pointer into name */ | |
582 | unsigned ip[4]; /* IP address components */ | |
583 | _cups_globals_t *cg = _cupsGlobals(); | |
584 | /* Pointer to library globals */ | |
585 | ||
586 | ||
e07d4801 | 587 | DEBUG_printf(("httpGetHostByName(name=\"%s\")", name)); |
ef416fc2 | 588 | |
589 | /* | |
590 | * Avoid lookup delays and configuration problems when connecting | |
591 | * to the localhost address... | |
592 | */ | |
593 | ||
594 | if (!strcmp(name, "localhost")) | |
595 | name = "127.0.0.1"; | |
596 | ||
597 | /* | |
598 | * This function is needed because some operating systems have a | |
599 | * buggy implementation of gethostbyname() that does not support | |
600 | * IP addresses. If the first character of the name string is a | |
601 | * number, then sscanf() is used to extract the IP components. | |
602 | * We then pack the components into an IPv4 address manually, | |
603 | * since the inet_aton() function is deprecated. We use the | |
604 | * htonl() macro to get the right byte order for the address. | |
605 | * | |
606 | * We also support domain sockets when supported by the underlying | |
607 | * OS... | |
608 | */ | |
609 | ||
610 | #ifdef AF_LOCAL | |
611 | if (name[0] == '/') | |
612 | { | |
613 | /* | |
614 | * A domain socket address, so make an AF_LOCAL entry and return it... | |
615 | */ | |
616 | ||
617 | cg->hostent.h_name = (char *)name; | |
618 | cg->hostent.h_aliases = NULL; | |
619 | cg->hostent.h_addrtype = AF_LOCAL; | |
620 | cg->hostent.h_length = strlen(name) + 1; | |
621 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
622 | cg->ip_ptrs[0] = (char *)name; | |
623 | cg->ip_ptrs[1] = NULL; | |
624 | ||
e07d4801 | 625 | DEBUG_puts("1httpGetHostByName: returning domain socket address..."); |
ef416fc2 | 626 | |
627 | return (&cg->hostent); | |
628 | } | |
629 | #endif /* AF_LOCAL */ | |
630 | ||
631 | for (nameptr = name; isdigit(*nameptr & 255) || *nameptr == '.'; nameptr ++); | |
632 | ||
633 | if (!*nameptr) | |
634 | { | |
635 | /* | |
636 | * We have an IPv4 address; break it up and provide the host entry | |
637 | * to the caller. | |
638 | */ | |
639 | ||
640 | if (sscanf(name, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) | |
641 | return (NULL); /* Must have 4 numbers */ | |
642 | ||
643 | if (ip[0] > 255 || ip[1] > 255 || ip[2] > 255 || ip[3] > 255) | |
644 | return (NULL); /* Invalid byte ranges! */ | |
645 | ||
646 | cg->ip_addr = htonl(((((((ip[0] << 8) | ip[1]) << 8) | ip[2]) << 8) | | |
647 | ip[3])); | |
648 | ||
649 | /* | |
650 | * Fill in the host entry and return it... | |
651 | */ | |
652 | ||
653 | cg->hostent.h_name = (char *)name; | |
654 | cg->hostent.h_aliases = NULL; | |
655 | cg->hostent.h_addrtype = AF_INET; | |
656 | cg->hostent.h_length = 4; | |
657 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
658 | cg->ip_ptrs[0] = (char *)&(cg->ip_addr); | |
659 | cg->ip_ptrs[1] = NULL; | |
660 | ||
e07d4801 | 661 | DEBUG_puts("1httpGetHostByName: returning IPv4 address..."); |
ef416fc2 | 662 | |
663 | return (&cg->hostent); | |
664 | } | |
665 | else | |
666 | { | |
667 | /* | |
668 | * Use the gethostbyname() function to get the IPv4 address for | |
669 | * the name... | |
670 | */ | |
671 | ||
e07d4801 | 672 | DEBUG_puts("1httpGetHostByName: returning domain lookup address(es)..."); |
ef416fc2 | 673 | |
674 | return (gethostbyname(name)); | |
675 | } | |
676 | } | |
677 | ||
678 | ||
679 | /* | |
757d2cad | 680 | * 'httpGetHostname()' - Get the FQDN for the connection or local system. |
ef416fc2 | 681 | * |
757d2cad | 682 | * When "http" points to a connected socket, return the hostname or |
683 | * address that was used in the call to httpConnect() or httpConnectEncrypt(). | |
684 | * Otherwise, return the FQDN for the local system using both gethostname() | |
685 | * and gethostbyname() to get the local hostname with domain. | |
ef416fc2 | 686 | * |
f3c17241 | 687 | * @since CUPS 1.2/OS X 10.5@ |
ef416fc2 | 688 | */ |
689 | ||
757d2cad | 690 | const char * /* O - FQDN for connection or system */ |
691 | httpGetHostname(http_t *http, /* I - HTTP connection or NULL */ | |
692 | char *s, /* I - String buffer for name */ | |
693 | int slen) /* I - Size of buffer */ | |
ef416fc2 | 694 | { |
89d46774 | 695 | if (!s || slen <= 1) |
696 | return (NULL); | |
697 | ||
757d2cad | 698 | if (http) |
480ef0fe | 699 | { |
700 | if (http->hostname[0] == '/') | |
701 | strlcpy(s, "localhost", slen); | |
702 | else | |
703 | strlcpy(s, http->hostname, slen); | |
704 | } | |
757d2cad | 705 | else |
ef416fc2 | 706 | { |
707 | /* | |
757d2cad | 708 | * Get the hostname... |
ef416fc2 | 709 | */ |
710 | ||
89d46774 | 711 | if (gethostname(s, slen) < 0) |
712 | strlcpy(s, "localhost", slen); | |
757d2cad | 713 | |
714 | if (!strchr(s, '.')) | |
715 | { | |
0837b7e8 | 716 | #ifdef HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME |
1106b00e MS |
717 | /* |
718 | * The hostname is not a FQDN, so use the local hostname from the | |
719 | * SystemConfiguration framework... | |
720 | */ | |
721 | ||
722 | SCDynamicStoreRef sc = SCDynamicStoreCreate(kCFAllocatorDefault, | |
723 | CFSTR("libcups"), NULL, NULL); | |
724 | /* System configuration data */ | |
725 | CFStringRef local = sc ? SCDynamicStoreCopyLocalHostName(sc) : NULL; | |
726 | /* Local host name */ | |
727 | char localStr[1024]; /* Local host name C string */ | |
728 | ||
729 | if (local && CFStringGetCString(local, localStr, sizeof(localStr), | |
730 | kCFStringEncodingUTF8)) | |
731 | { | |
732 | /* | |
733 | * Append ".local." to the hostname we get... | |
734 | */ | |
735 | ||
736 | snprintf(s, slen, "%s.local.", localStr); | |
737 | } | |
738 | ||
739 | if (local) | |
740 | CFRelease(local); | |
741 | if (sc) | |
742 | CFRelease(sc); | |
743 | ||
744 | #else | |
757d2cad | 745 | /* |
746 | * The hostname is not a FQDN, so look it up... | |
747 | */ | |
748 | ||
1106b00e MS |
749 | struct hostent *host; /* Host entry to get FQDN */ |
750 | ||
89d46774 | 751 | if ((host = gethostbyname(s)) != NULL && host->h_name) |
1106b00e MS |
752 | { |
753 | /* | |
754 | * Use the resolved hostname... | |
755 | */ | |
756 | ||
757d2cad | 757 | strlcpy(s, host->h_name, slen); |
1106b00e | 758 | } |
0837b7e8 | 759 | #endif /* HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME */ |
757d2cad | 760 | } |
ef416fc2 | 761 | } |
762 | ||
763 | /* | |
764 | * Return the hostname with as much domain info as we have... | |
765 | */ | |
766 | ||
767 | return (s); | |
768 | } | |
769 | ||
770 | ||
771 | /* | |
f2d18633 | 772 | * End of "$Id$". |
ef416fc2 | 773 | */ |