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Commit | Line | Data |
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ef416fc2 | 1 | /* |
996acce8 | 2 | * HTTP address routines for CUPS. |
ef416fc2 | 3 | * |
7e86f2f6 | 4 | * Copyright 2007-2014 by Apple Inc. |
996acce8 | 5 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 6 | * |
996acce8 MS |
7 | * These coded instructions, statements, and computer programs are the |
8 | * property of Apple Inc. and are protected by Federal copyright | |
9 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
10 | * which should have been included with this file. If this file is | |
57b7b66b | 11 | * missing or damaged, see the license at "http://www.cups.org/". |
6539a0af MS |
12 | * |
13 | * This file is subject to the Apple OS-Developed Software exception. | |
ef416fc2 | 14 | */ |
15 | ||
16 | /* | |
17 | * Include necessary headers... | |
18 | */ | |
19 | ||
71e16022 | 20 | #include "cups-private.h" |
87e98392 | 21 | #include <sys/stat.h> |
49d87452 MS |
22 | #ifdef HAVE_RESOLV_H |
23 | # include <resolv.h> | |
24 | #endif /* HAVE_RESOLV_H */ | |
a29fd7dd | 25 | #ifdef __APPLE__ |
1106b00e | 26 | # include <CoreFoundation/CoreFoundation.h> |
1106b00e | 27 | # include <SystemConfiguration/SystemConfiguration.h> |
a29fd7dd | 28 | #endif /* __APPLE__ */ |
ef416fc2 | 29 | |
30 | ||
31 | /* | |
32 | * 'httpAddrAny()' - Check for the "any" address. | |
33 | * | |
8072030b | 34 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 35 | */ |
36 | ||
37 | int /* O - 1 if "any", 0 otherwise */ | |
38 | httpAddrAny(const http_addr_t *addr) /* I - Address to check */ | |
39 | { | |
89d46774 | 40 | if (!addr) |
41 | return (0); | |
42 | ||
ef416fc2 | 43 | #ifdef AF_INET6 |
44 | if (addr->addr.sa_family == AF_INET6 && | |
45 | IN6_IS_ADDR_UNSPECIFIED(&(addr->ipv6.sin6_addr))) | |
46 | return (1); | |
47 | #endif /* AF_INET6 */ | |
48 | ||
49 | if (addr->addr.sa_family == AF_INET && | |
50 | ntohl(addr->ipv4.sin_addr.s_addr) == 0x00000000) | |
51 | return (1); | |
52 | ||
53 | return (0); | |
54 | } | |
55 | ||
56 | ||
87e98392 MS |
57 | /* |
58 | * 'httpAddrClose()' - Close a socket created by @link httpAddrConnect@ or | |
59 | * @link httpAddrListen@. | |
60 | * | |
98d88c8d MS |
61 | * Pass @code NULL@ for sockets created with @link httpAddrConnect2@ and the |
62 | * listen address for sockets created with @link httpAddrListen@. This function | |
63 | * ensures that domain sockets are removed when closed. | |
87e98392 | 64 | * |
e1f19878 | 65 | * @since CUPS 2.0/OS 10.10@ |
87e98392 MS |
66 | */ |
67 | ||
68 | int /* O - 0 on success, -1 on failure */ | |
69 | httpAddrClose(http_addr_t *addr, /* I - Listen address or @code NULL@ */ | |
70 | int fd) /* I - Socket file descriptor */ | |
71 | { | |
72 | #ifdef WIN32 | |
73 | if (closesocket(fd)) | |
74 | #else | |
75 | if (close(fd)) | |
76 | #endif /* WIN32 */ | |
77 | return (-1); | |
78 | ||
79 | #ifdef AF_LOCAL | |
80 | if (addr && addr->addr.sa_family == AF_LOCAL) | |
81 | return (unlink(addr->un.sun_path)); | |
82 | #endif /* AF_LOCAL */ | |
83 | ||
84 | return (0); | |
85 | } | |
86 | ||
87 | ||
ef416fc2 | 88 | /* |
89 | * 'httpAddrEqual()' - Compare two addresses. | |
90 | * | |
8072030b | 91 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 92 | */ |
93 | ||
ecdc0628 | 94 | int /* O - 1 if equal, 0 if not */ |
ef416fc2 | 95 | httpAddrEqual(const http_addr_t *addr1, /* I - First address */ |
96 | const http_addr_t *addr2) /* I - Second address */ | |
97 | { | |
89d46774 | 98 | if (!addr1 && !addr2) |
99 | return (1); | |
100 | ||
101 | if (!addr1 || !addr2) | |
102 | return (0); | |
103 | ||
ef416fc2 | 104 | if (addr1->addr.sa_family != addr2->addr.sa_family) |
105 | return (0); | |
106 | ||
107 | #ifdef AF_LOCAL | |
108 | if (addr1->addr.sa_family == AF_LOCAL) | |
109 | return (!strcmp(addr1->un.sun_path, addr2->un.sun_path)); | |
110 | #endif /* AF_LOCAL */ | |
111 | ||
112 | #ifdef AF_INET6 | |
113 | if (addr1->addr.sa_family == AF_INET6) | |
114 | return (!memcmp(&(addr1->ipv6.sin6_addr), &(addr2->ipv6.sin6_addr), 16)); | |
115 | #endif /* AF_INET6 */ | |
116 | ||
117 | return (addr1->ipv4.sin_addr.s_addr == addr2->ipv4.sin_addr.s_addr); | |
118 | } | |
119 | ||
120 | ||
121 | /* | |
122 | * 'httpAddrLength()' - Return the length of the address in bytes. | |
123 | * | |
8072030b | 124 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 125 | */ |
126 | ||
127 | int /* O - Length in bytes */ | |
128 | httpAddrLength(const http_addr_t *addr) /* I - Address */ | |
129 | { | |
89d46774 | 130 | if (!addr) |
131 | return (0); | |
132 | ||
ef416fc2 | 133 | #ifdef AF_INET6 |
134 | if (addr->addr.sa_family == AF_INET6) | |
135 | return (sizeof(addr->ipv6)); | |
136 | else | |
137 | #endif /* AF_INET6 */ | |
138 | #ifdef AF_LOCAL | |
139 | if (addr->addr.sa_family == AF_LOCAL) | |
7e86f2f6 | 140 | return ((int)(offsetof(struct sockaddr_un, sun_path) + strlen(addr->un.sun_path) + 1)); |
ef416fc2 | 141 | else |
142 | #endif /* AF_LOCAL */ | |
143 | if (addr->addr.sa_family == AF_INET) | |
144 | return (sizeof(addr->ipv4)); | |
145 | else | |
146 | return (0); | |
147 | ||
148 | } | |
149 | ||
150 | ||
a469f8a5 MS |
151 | /* |
152 | * 'httpAddrListen()' - Create a listening socket bound to the specified | |
153 | * address and port. | |
154 | * | |
8072030b | 155 | * @since CUPS 1.7/macOS 10.9@ |
a469f8a5 MS |
156 | */ |
157 | ||
158 | int /* O - Socket or -1 on error */ | |
159 | httpAddrListen(http_addr_t *addr, /* I - Address to bind to */ | |
160 | int port) /* I - Port number to bind to */ | |
161 | { | |
162 | int fd = -1, /* Socket */ | |
87e98392 MS |
163 | val, /* Socket value */ |
164 | status; /* Bind status */ | |
a469f8a5 MS |
165 | |
166 | ||
167 | /* | |
168 | * Range check input... | |
169 | */ | |
170 | ||
87e98392 | 171 | if (!addr || port < 0) |
a469f8a5 MS |
172 | return (-1); |
173 | ||
87e98392 MS |
174 | /* |
175 | * Create the socket and set options... | |
176 | */ | |
177 | ||
a469f8a5 MS |
178 | if ((fd = socket(addr->addr.sa_family, SOCK_STREAM, 0)) < 0) |
179 | { | |
180 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
181 | return (-1); | |
182 | } | |
183 | ||
184 | val = 1; | |
db8b865d | 185 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
186 | |
187 | #ifdef IPV6_V6ONLY | |
188 | if (addr->addr.sa_family == AF_INET6) | |
db8b865d | 189 | setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
190 | #endif /* IPV6_V6ONLY */ |
191 | ||
87e98392 MS |
192 | /* |
193 | * Bind the socket... | |
194 | */ | |
a469f8a5 | 195 | |
87e98392 MS |
196 | #ifdef AF_LOCAL |
197 | if (addr->addr.sa_family == AF_LOCAL) | |
198 | { | |
199 | mode_t mask; /* Umask setting */ | |
200 | ||
201 | /* | |
202 | * Remove any existing domain socket file... | |
203 | */ | |
204 | ||
205 | unlink(addr->un.sun_path); | |
206 | ||
207 | /* | |
208 | * Save the current umask and set it to 0 so that all users can access | |
209 | * the domain socket... | |
210 | */ | |
211 | ||
212 | mask = umask(0); | |
213 | ||
214 | /* | |
215 | * Bind the domain socket... | |
216 | */ | |
217 | ||
7e86f2f6 | 218 | status = bind(fd, (struct sockaddr *)addr, (socklen_t)httpAddrLength(addr)); |
87e98392 MS |
219 | |
220 | /* | |
221 | * Restore the umask and fix permissions... | |
222 | */ | |
223 | ||
224 | umask(mask); | |
225 | chmod(addr->un.sun_path, 0140777); | |
226 | } | |
227 | else | |
228 | #endif /* AF_LOCAL */ | |
229 | { | |
230 | _httpAddrSetPort(addr, port); | |
231 | ||
7e86f2f6 | 232 | status = bind(fd, (struct sockaddr *)addr, (socklen_t)httpAddrLength(addr)); |
87e98392 MS |
233 | } |
234 | ||
235 | if (status) | |
a469f8a5 MS |
236 | { |
237 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
238 | ||
239 | close(fd); | |
240 | ||
241 | return (-1); | |
242 | } | |
243 | ||
87e98392 MS |
244 | /* |
245 | * Listen... | |
246 | */ | |
247 | ||
a469f8a5 MS |
248 | if (listen(fd, 5)) |
249 | { | |
250 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
251 | ||
252 | close(fd); | |
253 | ||
254 | return (-1); | |
255 | } | |
256 | ||
87e98392 MS |
257 | /* |
258 | * Close on exec... | |
259 | */ | |
260 | ||
261 | #ifndef WIN32 | |
262 | fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
263 | #endif /* !WIN32 */ | |
264 | ||
a469f8a5 MS |
265 | #ifdef SO_NOSIGPIPE |
266 | /* | |
267 | * Disable SIGPIPE for this socket. | |
268 | */ | |
269 | ||
270 | val = 1; | |
db8b865d | 271 | setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
272 | #endif /* SO_NOSIGPIPE */ |
273 | ||
274 | return (fd); | |
275 | } | |
276 | ||
277 | ||
ef416fc2 | 278 | /* |
279 | * 'httpAddrLocalhost()' - Check for the local loopback address. | |
280 | * | |
8072030b | 281 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 282 | */ |
283 | ||
284 | int /* O - 1 if local host, 0 otherwise */ | |
285 | httpAddrLocalhost( | |
286 | const http_addr_t *addr) /* I - Address to check */ | |
287 | { | |
89d46774 | 288 | if (!addr) |
289 | return (1); | |
290 | ||
ef416fc2 | 291 | #ifdef AF_INET6 |
292 | if (addr->addr.sa_family == AF_INET6 && | |
fa73b229 | 293 | IN6_IS_ADDR_LOOPBACK(&(addr->ipv6.sin6_addr))) |
ef416fc2 | 294 | return (1); |
295 | #endif /* AF_INET6 */ | |
296 | ||
297 | #ifdef AF_LOCAL | |
298 | if (addr->addr.sa_family == AF_LOCAL) | |
299 | return (1); | |
300 | #endif /* AF_LOCAL */ | |
301 | ||
302 | if (addr->addr.sa_family == AF_INET && | |
e07d4801 | 303 | (ntohl(addr->ipv4.sin_addr.s_addr) & 0xff000000) == 0x7f000000) |
ef416fc2 | 304 | return (1); |
305 | ||
306 | return (0); | |
307 | } | |
308 | ||
309 | ||
ef416fc2 | 310 | /* |
311 | * 'httpAddrLookup()' - Lookup the hostname associated with the address. | |
312 | * | |
8072030b | 313 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 314 | */ |
315 | ||
ecdc0628 | 316 | char * /* O - Host name */ |
317 | httpAddrLookup( | |
318 | const http_addr_t *addr, /* I - Address to lookup */ | |
319 | char *name, /* I - Host name buffer */ | |
320 | int namelen) /* I - Size of name buffer */ | |
ef416fc2 | 321 | { |
49d87452 MS |
322 | _cups_globals_t *cg = _cupsGlobals(); |
323 | /* Global data */ | |
324 | ||
325 | ||
807315e6 | 326 | DEBUG_printf(("httpAddrLookup(addr=%p, name=%p, namelen=%d)", (void *)addr, (void *)name, namelen)); |
ef416fc2 | 327 | |
328 | /* | |
329 | * Range check input... | |
330 | */ | |
331 | ||
332 | if (!addr || !name || namelen <= 2) | |
333 | { | |
334 | if (name && namelen >= 1) | |
335 | *name = '\0'; | |
336 | ||
337 | return (NULL); | |
338 | } | |
339 | ||
340 | #ifdef AF_LOCAL | |
341 | if (addr->addr.sa_family == AF_LOCAL) | |
49d87452 | 342 | { |
07623986 | 343 | strlcpy(name, addr->un.sun_path, (size_t)namelen); |
49d87452 MS |
344 | return (name); |
345 | } | |
ef416fc2 | 346 | #endif /* AF_LOCAL */ |
49d87452 | 347 | |
d2354e63 MS |
348 | /* |
349 | * Optimize lookups for localhost/loopback addresses... | |
350 | */ | |
351 | ||
352 | if (httpAddrLocalhost(addr)) | |
353 | { | |
07623986 | 354 | strlcpy(name, "localhost", (size_t)namelen); |
d2354e63 MS |
355 | return (name); |
356 | } | |
357 | ||
49d87452 MS |
358 | #ifdef HAVE_RES_INIT |
359 | /* | |
360 | * STR #2920: Initialize resolver after failure in cups-polld | |
361 | * | |
362 | * If the previous lookup failed, re-initialize the resolver to prevent | |
363 | * temporary network errors from persisting. This *should* be handled by | |
364 | * the resolver libraries, but apparently the glibc folks do not agree. | |
365 | * | |
366 | * We set a flag at the end of this function if we encounter an error that | |
367 | * requires reinitialization of the resolver functions. We then call | |
368 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
369 | */ | |
370 | ||
371 | if (cg->need_res_init) | |
372 | { | |
373 | res_init(); | |
374 | ||
375 | cg->need_res_init = 0; | |
376 | } | |
377 | #endif /* HAVE_RES_INIT */ | |
378 | ||
ef416fc2 | 379 | #ifdef HAVE_GETNAMEINFO |
380 | { | |
db1f069b MS |
381 | /* |
382 | * STR #2486: httpAddrLookup() fails when getnameinfo() returns EAI_AGAIN | |
383 | * | |
384 | * FWIW, I think this is really a bug in the implementation of | |
385 | * getnameinfo(), but falling back on httpAddrString() is easy to | |
386 | * do... | |
387 | */ | |
ef416fc2 | 388 | |
7e86f2f6 | 389 | int error = getnameinfo(&addr->addr, (socklen_t)httpAddrLength(addr), name, (socklen_t)namelen, NULL, 0, 0); |
49d87452 MS |
390 | |
391 | if (error) | |
392 | { | |
393 | if (error == EAI_FAIL) | |
394 | cg->need_res_init = 1; | |
395 | ||
db1f069b | 396 | return (httpAddrString(addr, name, namelen)); |
49d87452 | 397 | } |
ef416fc2 | 398 | } |
399 | #else | |
400 | { | |
401 | struct hostent *host; /* Host from name service */ | |
402 | ||
403 | ||
404 | # ifdef AF_INET6 | |
405 | if (addr->addr.sa_family == AF_INET6) | |
3dd9c340 | 406 | host = gethostbyaddr((char *)&(addr->ipv6.sin6_addr), |
ef416fc2 | 407 | sizeof(struct in_addr), AF_INET6); |
408 | else | |
409 | # endif /* AF_INET6 */ | |
3dd9c340 | 410 | host = gethostbyaddr((char *)&(addr->ipv4.sin_addr), |
ef416fc2 | 411 | sizeof(struct in_addr), AF_INET); |
412 | ||
413 | if (host == NULL) | |
414 | { | |
415 | /* | |
416 | * No hostname, so return the raw address... | |
417 | */ | |
418 | ||
49d87452 MS |
419 | if (h_errno == NO_RECOVERY) |
420 | cg->need_res_init = 1; | |
421 | ||
422 | return (httpAddrString(addr, name, namelen)); | |
ef416fc2 | 423 | } |
424 | ||
07623986 | 425 | strlcpy(name, host->h_name, (size_t)namelen); |
ef416fc2 | 426 | } |
427 | #endif /* HAVE_GETNAMEINFO */ | |
428 | ||
e07d4801 MS |
429 | DEBUG_printf(("1httpAddrLookup: returning \"%s\"...", name)); |
430 | ||
ef416fc2 | 431 | return (name); |
432 | } | |
433 | ||
434 | ||
5ec1fd3d MS |
435 | /* |
436 | * 'httpAddrFamily()' - Get the address family of an address. | |
437 | */ | |
438 | ||
439 | int /* O - Address family */ | |
440 | httpAddrFamily(http_addr_t *addr) /* I - Address */ | |
441 | { | |
442 | if (addr) | |
443 | return (addr->addr.sa_family); | |
444 | else | |
445 | return (0); | |
446 | } | |
447 | ||
448 | ||
1ff0402e | 449 | /* |
a469f8a5 MS |
450 | * 'httpAddrPort()' - Get the port number associated with an address. |
451 | * | |
8072030b | 452 | * @since CUPS 1.7/macOS 10.9@ |
1ff0402e MS |
453 | */ |
454 | ||
455 | int /* O - Port number */ | |
a469f8a5 | 456 | httpAddrPort(http_addr_t *addr) /* I - Address */ |
1ff0402e | 457 | { |
5f64df29 | 458 | if (!addr) |
5ec1fd3d | 459 | return (-1); |
1ff0402e | 460 | #ifdef AF_INET6 |
5f64df29 | 461 | else if (addr->addr.sa_family == AF_INET6) |
1ff0402e | 462 | return (ntohs(addr->ipv6.sin6_port)); |
1ff0402e | 463 | #endif /* AF_INET6 */ |
5f64df29 | 464 | else if (addr->addr.sa_family == AF_INET) |
1ff0402e MS |
465 | return (ntohs(addr->ipv4.sin_port)); |
466 | else | |
5ec1fd3d | 467 | return (0); |
1ff0402e MS |
468 | } |
469 | ||
470 | ||
22c9029b MS |
471 | /* |
472 | * '_httpAddrSetPort()' - Set the port number associated with an address. | |
473 | */ | |
474 | ||
475 | void | |
476 | _httpAddrSetPort(http_addr_t *addr, /* I - Address */ | |
477 | int port) /* I - Port */ | |
478 | { | |
479 | if (!addr || port <= 0) | |
480 | return; | |
481 | ||
482 | #ifdef AF_INET6 | |
483 | if (addr->addr.sa_family == AF_INET6) | |
484 | addr->ipv6.sin6_port = htons(port); | |
485 | else | |
486 | #endif /* AF_INET6 */ | |
487 | if (addr->addr.sa_family == AF_INET) | |
488 | addr->ipv4.sin_port = htons(port); | |
489 | } | |
490 | ||
491 | ||
ef416fc2 | 492 | /* |
ecdc0628 | 493 | * 'httpAddrString()' - Convert an address to a numeric string. |
ef416fc2 | 494 | * |
8072030b | 495 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 496 | */ |
497 | ||
ecdc0628 | 498 | char * /* O - Numeric address string */ |
499 | httpAddrString(const http_addr_t *addr, /* I - Address to convert */ | |
500 | char *s, /* I - String buffer */ | |
501 | int slen) /* I - Length of string */ | |
ef416fc2 | 502 | { |
807315e6 | 503 | DEBUG_printf(("httpAddrString(addr=%p, s=%p, slen=%d)", (void *)addr, (void *)s, slen)); |
ef416fc2 | 504 | |
505 | /* | |
506 | * Range check input... | |
507 | */ | |
508 | ||
509 | if (!addr || !s || slen <= 2) | |
510 | { | |
511 | if (s && slen >= 1) | |
512 | *s = '\0'; | |
513 | ||
514 | return (NULL); | |
515 | } | |
516 | ||
517 | #ifdef AF_LOCAL | |
518 | if (addr->addr.sa_family == AF_LOCAL) | |
771bd8cb MS |
519 | { |
520 | if (addr->un.sun_path[0] == '/') | |
07623986 | 521 | strlcpy(s, addr->un.sun_path, (size_t)slen); |
771bd8cb | 522 | else |
07623986 | 523 | strlcpy(s, "localhost", (size_t)slen); |
771bd8cb | 524 | } |
ef416fc2 | 525 | else |
526 | #endif /* AF_LOCAL */ | |
b423cd4c | 527 | if (addr->addr.sa_family == AF_INET) |
ef416fc2 | 528 | { |
b423cd4c | 529 | unsigned temp; /* Temporary address */ |
ef416fc2 | 530 | |
b423cd4c | 531 | temp = ntohl(addr->ipv4.sin_addr.s_addr); |
532 | ||
07623986 | 533 | snprintf(s, (size_t)slen, "%d.%d.%d.%d", (temp >> 24) & 255, |
b423cd4c | 534 | (temp >> 16) & 255, (temp >> 8) & 255, temp & 255); |
535 | } | |
536 | #ifdef AF_INET6 | |
537 | else if (addr->addr.sa_family == AF_INET6) | |
538 | { | |
82f97232 MS |
539 | char *sptr, /* Pointer into string */ |
540 | temps[64]; /* Temporary string for address */ | |
541 | ||
b423cd4c | 542 | # ifdef HAVE_GETNAMEINFO |
7e86f2f6 | 543 | if (getnameinfo(&addr->addr, (socklen_t)httpAddrLength(addr), temps, sizeof(temps), NULL, 0, NI_NUMERICHOST)) |
ef416fc2 | 544 | { |
545 | /* | |
546 | * If we get an error back, then the address type is not supported | |
547 | * and we should zero out the buffer... | |
548 | */ | |
549 | ||
550 | s[0] = '\0'; | |
551 | ||
552 | return (NULL); | |
553 | } | |
82f97232 MS |
554 | else if ((sptr = strchr(temps, '%')) != NULL) |
555 | { | |
556 | /* | |
557 | * Convert "%zone" to "+zone" to match URI form... | |
558 | */ | |
559 | ||
560 | *sptr = '+'; | |
561 | } | |
562 | ||
b423cd4c | 563 | # else |
b423cd4c | 564 | int i; /* Looping var */ |
565 | unsigned temp; /* Current value */ | |
566 | const char *prefix; /* Prefix for address */ | |
567 | ||
568 | ||
569 | prefix = ""; | |
82f97232 | 570 | for (sptr = temps, i = 0; i < 4 && addr->ipv6.sin6_addr.s6_addr32[i]; i ++) |
ef416fc2 | 571 | { |
b423cd4c | 572 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 573 | |
07623986 | 574 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, (temp >> 16) & 0xffff); |
b423cd4c | 575 | prefix = ":"; |
b423cd4c | 576 | sptr += strlen(sptr); |
ef416fc2 | 577 | |
b423cd4c | 578 | temp &= 0xffff; |
ef416fc2 | 579 | |
b423cd4c | 580 | if (temp || i == 3 || addr->ipv6.sin6_addr.s6_addr32[i + 1]) |
581 | { | |
07623986 | 582 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, temp); |
ef416fc2 | 583 | sptr += strlen(sptr); |
ef416fc2 | 584 | } |
b423cd4c | 585 | } |
586 | ||
587 | if (i < 4) | |
588 | { | |
589 | while (i < 4 && !addr->ipv6.sin6_addr.s6_addr32[i]) | |
590 | i ++; | |
ef416fc2 | 591 | |
592 | if (i < 4) | |
593 | { | |
07623986 | 594 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s:", prefix); |
b423cd4c | 595 | prefix = ":"; |
b423cd4c | 596 | sptr += strlen(sptr); |
ef416fc2 | 597 | |
b423cd4c | 598 | for (; i < 4; i ++) |
ef416fc2 | 599 | { |
b423cd4c | 600 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 601 | |
82f97232 MS |
602 | if ((temp & 0xffff0000) || |
603 | (i > 0 && addr->ipv6.sin6_addr.s6_addr32[i - 1])) | |
ef416fc2 | 604 | { |
07623986 | 605 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, (temp >> 16) & 0xffff); |
ef416fc2 | 606 | sptr += strlen(sptr); |
b423cd4c | 607 | } |
ef416fc2 | 608 | |
07623986 | 609 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, temp & 0xffff); |
b423cd4c | 610 | sptr += strlen(sptr); |
ef416fc2 | 611 | } |
612 | } | |
b423cd4c | 613 | else if (sptr == s) |
614 | { | |
615 | /* | |
616 | * Empty address... | |
617 | */ | |
ef416fc2 | 618 | |
82f97232 | 619 | strlcpy(temps, "::", sizeof(temps)); |
b423cd4c | 620 | } |
621 | else | |
622 | { | |
623 | /* | |
624 | * Empty at end... | |
625 | */ | |
ef416fc2 | 626 | |
07623986 | 627 | strlcpy(sptr, "::", sizeof(temps) - (size_t)(sptr - temps)); |
b423cd4c | 628 | } |
ef416fc2 | 629 | } |
b423cd4c | 630 | # endif /* HAVE_GETNAMEINFO */ |
82f97232 MS |
631 | |
632 | /* | |
633 | * Add "[v1." and "]" around IPv6 address to convert to URI form. | |
634 | */ | |
635 | ||
07623986 | 636 | snprintf(s, (size_t)slen, "[v1.%s]", temps); |
ef416fc2 | 637 | } |
b423cd4c | 638 | #endif /* AF_INET6 */ |
639 | else | |
07623986 | 640 | strlcpy(s, "UNKNOWN", (size_t)slen); |
ef416fc2 | 641 | |
e07d4801 | 642 | DEBUG_printf(("1httpAddrString: returning \"%s\"...", s)); |
ef416fc2 | 643 | |
644 | return (s); | |
645 | } | |
646 | ||
647 | ||
996acce8 MS |
648 | /* |
649 | * 'httpGetAddress()' - Get the address of the connected peer of a connection. | |
650 | * | |
98d88c8d MS |
651 | * For connections created with @link httpConnect2@, the address is for the |
652 | * server. For connections created with @link httpAccept@, the address is for | |
653 | * the client. | |
654 | * | |
996acce8 MS |
655 | * Returns @code NULL@ if the socket is currently unconnected. |
656 | * | |
e1f19878 | 657 | * @since CUPS 2.0/OS 10.10@ |
996acce8 MS |
658 | */ |
659 | ||
660 | http_addr_t * /* O - Connected address or @code NULL@ */ | |
661 | httpGetAddress(http_t *http) /* I - HTTP connection */ | |
662 | { | |
663 | if (http) | |
664 | return (http->hostaddr); | |
665 | else | |
666 | return (NULL); | |
667 | } | |
668 | ||
669 | ||
ef416fc2 | 670 | /* |
671 | * 'httpGetHostByName()' - Lookup a hostname or IPv4 address, and return | |
672 | * address records for the specified name. | |
673 | * | |
98d88c8d | 674 | * @deprecated@ @exclude all@ |
ef416fc2 | 675 | */ |
676 | ||
677 | struct hostent * /* O - Host entry */ | |
678 | httpGetHostByName(const char *name) /* I - Hostname or IP address */ | |
679 | { | |
680 | const char *nameptr; /* Pointer into name */ | |
681 | unsigned ip[4]; /* IP address components */ | |
682 | _cups_globals_t *cg = _cupsGlobals(); | |
683 | /* Pointer to library globals */ | |
684 | ||
685 | ||
e07d4801 | 686 | DEBUG_printf(("httpGetHostByName(name=\"%s\")", name)); |
ef416fc2 | 687 | |
688 | /* | |
689 | * Avoid lookup delays and configuration problems when connecting | |
690 | * to the localhost address... | |
691 | */ | |
692 | ||
693 | if (!strcmp(name, "localhost")) | |
694 | name = "127.0.0.1"; | |
695 | ||
696 | /* | |
697 | * This function is needed because some operating systems have a | |
698 | * buggy implementation of gethostbyname() that does not support | |
699 | * IP addresses. If the first character of the name string is a | |
700 | * number, then sscanf() is used to extract the IP components. | |
701 | * We then pack the components into an IPv4 address manually, | |
702 | * since the inet_aton() function is deprecated. We use the | |
703 | * htonl() macro to get the right byte order for the address. | |
704 | * | |
705 | * We also support domain sockets when supported by the underlying | |
706 | * OS... | |
707 | */ | |
708 | ||
709 | #ifdef AF_LOCAL | |
710 | if (name[0] == '/') | |
711 | { | |
712 | /* | |
713 | * A domain socket address, so make an AF_LOCAL entry and return it... | |
714 | */ | |
715 | ||
716 | cg->hostent.h_name = (char *)name; | |
717 | cg->hostent.h_aliases = NULL; | |
718 | cg->hostent.h_addrtype = AF_LOCAL; | |
7e86f2f6 | 719 | cg->hostent.h_length = (int)strlen(name) + 1; |
ef416fc2 | 720 | cg->hostent.h_addr_list = cg->ip_ptrs; |
721 | cg->ip_ptrs[0] = (char *)name; | |
722 | cg->ip_ptrs[1] = NULL; | |
723 | ||
e07d4801 | 724 | DEBUG_puts("1httpGetHostByName: returning domain socket address..."); |
ef416fc2 | 725 | |
726 | return (&cg->hostent); | |
727 | } | |
728 | #endif /* AF_LOCAL */ | |
729 | ||
730 | for (nameptr = name; isdigit(*nameptr & 255) || *nameptr == '.'; nameptr ++); | |
731 | ||
732 | if (!*nameptr) | |
733 | { | |
734 | /* | |
735 | * We have an IPv4 address; break it up and provide the host entry | |
736 | * to the caller. | |
737 | */ | |
738 | ||
739 | if (sscanf(name, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) | |
740 | return (NULL); /* Must have 4 numbers */ | |
741 | ||
742 | if (ip[0] > 255 || ip[1] > 255 || ip[2] > 255 || ip[3] > 255) | |
743 | return (NULL); /* Invalid byte ranges! */ | |
744 | ||
da003234 MS |
745 | cg->ip_addr = htonl((((((((unsigned)ip[0] << 8) | (unsigned)ip[1]) << 8) | |
746 | (unsigned)ip[2]) << 8) | | |
747 | (unsigned)ip[3])); | |
ef416fc2 | 748 | |
749 | /* | |
750 | * Fill in the host entry and return it... | |
751 | */ | |
752 | ||
753 | cg->hostent.h_name = (char *)name; | |
754 | cg->hostent.h_aliases = NULL; | |
755 | cg->hostent.h_addrtype = AF_INET; | |
756 | cg->hostent.h_length = 4; | |
757 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
758 | cg->ip_ptrs[0] = (char *)&(cg->ip_addr); | |
759 | cg->ip_ptrs[1] = NULL; | |
760 | ||
e07d4801 | 761 | DEBUG_puts("1httpGetHostByName: returning IPv4 address..."); |
ef416fc2 | 762 | |
763 | return (&cg->hostent); | |
764 | } | |
765 | else | |
766 | { | |
767 | /* | |
768 | * Use the gethostbyname() function to get the IPv4 address for | |
769 | * the name... | |
770 | */ | |
771 | ||
e07d4801 | 772 | DEBUG_puts("1httpGetHostByName: returning domain lookup address(es)..."); |
ef416fc2 | 773 | |
774 | return (gethostbyname(name)); | |
775 | } | |
776 | } | |
777 | ||
778 | ||
779 | /* | |
757d2cad | 780 | * 'httpGetHostname()' - Get the FQDN for the connection or local system. |
ef416fc2 | 781 | * |
757d2cad | 782 | * When "http" points to a connected socket, return the hostname or |
48bd1142 MS |
783 | * address that was used in the call to httpConnect() or httpConnectEncrypt(), |
784 | * or the address of the client for the connection from httpAcceptConnection(). | |
757d2cad | 785 | * Otherwise, return the FQDN for the local system using both gethostname() |
786 | * and gethostbyname() to get the local hostname with domain. | |
ef416fc2 | 787 | * |
8072030b | 788 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 789 | */ |
790 | ||
757d2cad | 791 | const char * /* O - FQDN for connection or system */ |
792 | httpGetHostname(http_t *http, /* I - HTTP connection or NULL */ | |
793 | char *s, /* I - String buffer for name */ | |
794 | int slen) /* I - Size of buffer */ | |
ef416fc2 | 795 | { |
757d2cad | 796 | if (http) |
480ef0fe | 797 | { |
5ec1fd3d MS |
798 | if (!s || slen <= 1) |
799 | { | |
800 | if (http->hostname[0] == '/') | |
801 | return ("localhost"); | |
802 | else | |
803 | return (http->hostname); | |
804 | } | |
805 | else if (http->hostname[0] == '/') | |
07623986 | 806 | strlcpy(s, "localhost", (size_t)slen); |
480ef0fe | 807 | else |
07623986 | 808 | strlcpy(s, http->hostname, (size_t)slen); |
480ef0fe | 809 | } |
757d2cad | 810 | else |
ef416fc2 | 811 | { |
812 | /* | |
757d2cad | 813 | * Get the hostname... |
ef416fc2 | 814 | */ |
815 | ||
5ec1fd3d MS |
816 | if (!s || slen <= 1) |
817 | return (NULL); | |
da003234 | 818 | |
7e86f2f6 | 819 | if (gethostname(s, (size_t)slen) < 0) |
07623986 | 820 | strlcpy(s, "localhost", (size_t)slen); |
757d2cad | 821 | |
822 | if (!strchr(s, '.')) | |
823 | { | |
0837b7e8 | 824 | #ifdef HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME |
1106b00e MS |
825 | /* |
826 | * The hostname is not a FQDN, so use the local hostname from the | |
827 | * SystemConfiguration framework... | |
828 | */ | |
829 | ||
830 | SCDynamicStoreRef sc = SCDynamicStoreCreate(kCFAllocatorDefault, | |
831 | CFSTR("libcups"), NULL, NULL); | |
832 | /* System configuration data */ | |
833 | CFStringRef local = sc ? SCDynamicStoreCopyLocalHostName(sc) : NULL; | |
834 | /* Local host name */ | |
835 | char localStr[1024]; /* Local host name C string */ | |
836 | ||
837 | if (local && CFStringGetCString(local, localStr, sizeof(localStr), | |
838 | kCFStringEncodingUTF8)) | |
839 | { | |
840 | /* | |
841 | * Append ".local." to the hostname we get... | |
842 | */ | |
843 | ||
07623986 | 844 | snprintf(s, (size_t)slen, "%s.local.", localStr); |
1106b00e MS |
845 | } |
846 | ||
847 | if (local) | |
848 | CFRelease(local); | |
849 | if (sc) | |
850 | CFRelease(sc); | |
851 | ||
852 | #else | |
757d2cad | 853 | /* |
854 | * The hostname is not a FQDN, so look it up... | |
855 | */ | |
856 | ||
1106b00e MS |
857 | struct hostent *host; /* Host entry to get FQDN */ |
858 | ||
89d46774 | 859 | if ((host = gethostbyname(s)) != NULL && host->h_name) |
1106b00e MS |
860 | { |
861 | /* | |
862 | * Use the resolved hostname... | |
863 | */ | |
864 | ||
07623986 | 865 | strlcpy(s, host->h_name, (size_t)slen); |
1106b00e | 866 | } |
0837b7e8 | 867 | #endif /* HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME */ |
757d2cad | 868 | } |
83ce8172 MS |
869 | |
870 | /* | |
871 | * Make sure .local hostnames end with a period... | |
872 | */ | |
873 | ||
874 | if (strlen(s) > 6 && !strcmp(s + strlen(s) - 6, ".local")) | |
c6cc3553 | 875 | strlcat(s, ".", (size_t)slen); |
ef416fc2 | 876 | } |
877 | ||
bd31658d MS |
878 | /* |
879 | * Convert the hostname to lowercase as needed... | |
880 | */ | |
881 | ||
882 | if (s[0] != '/') | |
883 | { | |
884 | char *ptr; /* Pointer into string */ | |
885 | ||
886 | for (ptr = s; *ptr; ptr ++) | |
887 | *ptr = (char)_cups_tolower((int)*ptr); | |
888 | } | |
889 | ||
ef416fc2 | 890 | /* |
891 | * Return the hostname with as much domain info as we have... | |
892 | */ | |
893 | ||
894 | return (s); | |
895 | } | |
896 | ||
897 | ||
48bd1142 MS |
898 | /* |
899 | * 'httpResolveHostname()' - Resolve the hostname of the HTTP connection | |
900 | * address. | |
901 | * | |
e1f19878 | 902 | * @since CUPS 2.0/OS 10.10@ |
48bd1142 MS |
903 | */ |
904 | ||
905 | const char * /* O - Resolved hostname or @code NULL@ */ | |
906 | httpResolveHostname(http_t *http, /* I - HTTP connection */ | |
907 | char *buffer, /* I - Hostname buffer */ | |
908 | size_t bufsize) /* I - Size of buffer */ | |
909 | { | |
910 | if (!http) | |
911 | return (NULL); | |
912 | ||
913 | if (isdigit(http->hostname[0] & 255) || http->hostname[0] == '[') | |
914 | { | |
915 | char temp[1024]; /* Temporary string */ | |
916 | ||
917 | if (httpAddrLookup(http->hostaddr, temp, sizeof(temp))) | |
918 | strlcpy(http->hostname, temp, sizeof(http->hostname)); | |
919 | else | |
920 | return (NULL); | |
921 | } | |
922 | ||
923 | if (buffer) | |
924 | { | |
925 | if (http->hostname[0] == '/') | |
926 | strlcpy(buffer, "localhost", bufsize); | |
927 | else | |
928 | strlcpy(buffer, http->hostname, bufsize); | |
929 | ||
930 | return (buffer); | |
931 | } | |
932 | else if (http->hostname[0] == '/') | |
933 | return ("localhost"); | |
934 | else | |
935 | return (http->hostname); | |
936 | } |