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Commit | Line | Data |
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ef416fc2 | 1 | /* |
996acce8 | 2 | * HTTP address routines for CUPS. |
ef416fc2 | 3 | * |
3c2cb822 | 4 | * Copyright 2007-2019 by Apple Inc. |
996acce8 | 5 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 6 | * |
3c2cb822 MS |
7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more |
8 | * information. | |
ef416fc2 | 9 | */ |
10 | ||
11 | /* | |
12 | * Include necessary headers... | |
13 | */ | |
14 | ||
71e16022 | 15 | #include "cups-private.h" |
fb863569 | 16 | #include "debug-internal.h" |
87e98392 | 17 | #include <sys/stat.h> |
49d87452 MS |
18 | #ifdef HAVE_RESOLV_H |
19 | # include <resolv.h> | |
20 | #endif /* HAVE_RESOLV_H */ | |
a29fd7dd | 21 | #ifdef __APPLE__ |
1106b00e | 22 | # include <CoreFoundation/CoreFoundation.h> |
3c2cb822 MS |
23 | # ifdef HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME |
24 | # include <SystemConfiguration/SystemConfiguration.h> | |
25 | # endif /* HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME */ | |
a29fd7dd | 26 | #endif /* __APPLE__ */ |
ef416fc2 | 27 | |
28 | ||
29 | /* | |
30 | * 'httpAddrAny()' - Check for the "any" address. | |
31 | * | |
8072030b | 32 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 33 | */ |
34 | ||
35 | int /* O - 1 if "any", 0 otherwise */ | |
36 | httpAddrAny(const http_addr_t *addr) /* I - Address to check */ | |
37 | { | |
89d46774 | 38 | if (!addr) |
39 | return (0); | |
40 | ||
ef416fc2 | 41 | #ifdef AF_INET6 |
42 | if (addr->addr.sa_family == AF_INET6 && | |
43 | IN6_IS_ADDR_UNSPECIFIED(&(addr->ipv6.sin6_addr))) | |
44 | return (1); | |
45 | #endif /* AF_INET6 */ | |
46 | ||
47 | if (addr->addr.sa_family == AF_INET && | |
48 | ntohl(addr->ipv4.sin_addr.s_addr) == 0x00000000) | |
49 | return (1); | |
50 | ||
51 | return (0); | |
52 | } | |
53 | ||
54 | ||
87e98392 MS |
55 | /* |
56 | * 'httpAddrClose()' - Close a socket created by @link httpAddrConnect@ or | |
57 | * @link httpAddrListen@. | |
58 | * | |
98d88c8d MS |
59 | * Pass @code NULL@ for sockets created with @link httpAddrConnect2@ and the |
60 | * listen address for sockets created with @link httpAddrListen@. This function | |
61 | * ensures that domain sockets are removed when closed. | |
87e98392 | 62 | * |
e1f19878 | 63 | * @since CUPS 2.0/OS 10.10@ |
87e98392 MS |
64 | */ |
65 | ||
66 | int /* O - 0 on success, -1 on failure */ | |
67 | httpAddrClose(http_addr_t *addr, /* I - Listen address or @code NULL@ */ | |
68 | int fd) /* I - Socket file descriptor */ | |
69 | { | |
19dc16f7 | 70 | #ifdef _WIN32 |
87e98392 MS |
71 | if (closesocket(fd)) |
72 | #else | |
73 | if (close(fd)) | |
19dc16f7 | 74 | #endif /* _WIN32 */ |
87e98392 MS |
75 | return (-1); |
76 | ||
77 | #ifdef AF_LOCAL | |
78 | if (addr && addr->addr.sa_family == AF_LOCAL) | |
79 | return (unlink(addr->un.sun_path)); | |
80 | #endif /* AF_LOCAL */ | |
81 | ||
82 | return (0); | |
83 | } | |
84 | ||
85 | ||
ef416fc2 | 86 | /* |
87 | * 'httpAddrEqual()' - Compare two addresses. | |
88 | * | |
8072030b | 89 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 90 | */ |
91 | ||
ecdc0628 | 92 | int /* O - 1 if equal, 0 if not */ |
ef416fc2 | 93 | httpAddrEqual(const http_addr_t *addr1, /* I - First address */ |
94 | const http_addr_t *addr2) /* I - Second address */ | |
95 | { | |
89d46774 | 96 | if (!addr1 && !addr2) |
97 | return (1); | |
98 | ||
99 | if (!addr1 || !addr2) | |
100 | return (0); | |
101 | ||
ef416fc2 | 102 | if (addr1->addr.sa_family != addr2->addr.sa_family) |
103 | return (0); | |
104 | ||
105 | #ifdef AF_LOCAL | |
106 | if (addr1->addr.sa_family == AF_LOCAL) | |
107 | return (!strcmp(addr1->un.sun_path, addr2->un.sun_path)); | |
108 | #endif /* AF_LOCAL */ | |
109 | ||
110 | #ifdef AF_INET6 | |
111 | if (addr1->addr.sa_family == AF_INET6) | |
112 | return (!memcmp(&(addr1->ipv6.sin6_addr), &(addr2->ipv6.sin6_addr), 16)); | |
113 | #endif /* AF_INET6 */ | |
114 | ||
115 | return (addr1->ipv4.sin_addr.s_addr == addr2->ipv4.sin_addr.s_addr); | |
116 | } | |
117 | ||
118 | ||
119 | /* | |
120 | * 'httpAddrLength()' - Return the length of the address in bytes. | |
121 | * | |
8072030b | 122 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 123 | */ |
124 | ||
125 | int /* O - Length in bytes */ | |
126 | httpAddrLength(const http_addr_t *addr) /* I - Address */ | |
127 | { | |
89d46774 | 128 | if (!addr) |
129 | return (0); | |
130 | ||
ef416fc2 | 131 | #ifdef AF_INET6 |
132 | if (addr->addr.sa_family == AF_INET6) | |
133 | return (sizeof(addr->ipv6)); | |
134 | else | |
135 | #endif /* AF_INET6 */ | |
136 | #ifdef AF_LOCAL | |
137 | if (addr->addr.sa_family == AF_LOCAL) | |
7e86f2f6 | 138 | return ((int)(offsetof(struct sockaddr_un, sun_path) + strlen(addr->un.sun_path) + 1)); |
ef416fc2 | 139 | else |
140 | #endif /* AF_LOCAL */ | |
141 | if (addr->addr.sa_family == AF_INET) | |
142 | return (sizeof(addr->ipv4)); | |
143 | else | |
144 | return (0); | |
145 | ||
146 | } | |
147 | ||
148 | ||
a469f8a5 MS |
149 | /* |
150 | * 'httpAddrListen()' - Create a listening socket bound to the specified | |
151 | * address and port. | |
152 | * | |
8072030b | 153 | * @since CUPS 1.7/macOS 10.9@ |
a469f8a5 MS |
154 | */ |
155 | ||
156 | int /* O - Socket or -1 on error */ | |
157 | httpAddrListen(http_addr_t *addr, /* I - Address to bind to */ | |
158 | int port) /* I - Port number to bind to */ | |
159 | { | |
160 | int fd = -1, /* Socket */ | |
87e98392 MS |
161 | val, /* Socket value */ |
162 | status; /* Bind status */ | |
a469f8a5 MS |
163 | |
164 | ||
165 | /* | |
166 | * Range check input... | |
167 | */ | |
168 | ||
87e98392 | 169 | if (!addr || port < 0) |
a469f8a5 MS |
170 | return (-1); |
171 | ||
87e98392 MS |
172 | /* |
173 | * Create the socket and set options... | |
174 | */ | |
175 | ||
a469f8a5 MS |
176 | if ((fd = socket(addr->addr.sa_family, SOCK_STREAM, 0)) < 0) |
177 | { | |
178 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
179 | return (-1); | |
180 | } | |
181 | ||
182 | val = 1; | |
db8b865d | 183 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
184 | |
185 | #ifdef IPV6_V6ONLY | |
186 | if (addr->addr.sa_family == AF_INET6) | |
db8b865d | 187 | setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
188 | #endif /* IPV6_V6ONLY */ |
189 | ||
87e98392 MS |
190 | /* |
191 | * Bind the socket... | |
192 | */ | |
a469f8a5 | 193 | |
87e98392 MS |
194 | #ifdef AF_LOCAL |
195 | if (addr->addr.sa_family == AF_LOCAL) | |
196 | { | |
197 | mode_t mask; /* Umask setting */ | |
198 | ||
199 | /* | |
200 | * Remove any existing domain socket file... | |
201 | */ | |
202 | ||
203 | unlink(addr->un.sun_path); | |
204 | ||
205 | /* | |
206 | * Save the current umask and set it to 0 so that all users can access | |
207 | * the domain socket... | |
208 | */ | |
209 | ||
210 | mask = umask(0); | |
211 | ||
212 | /* | |
213 | * Bind the domain socket... | |
214 | */ | |
215 | ||
7e86f2f6 | 216 | status = bind(fd, (struct sockaddr *)addr, (socklen_t)httpAddrLength(addr)); |
87e98392 MS |
217 | |
218 | /* | |
219 | * Restore the umask and fix permissions... | |
220 | */ | |
221 | ||
222 | umask(mask); | |
223 | chmod(addr->un.sun_path, 0140777); | |
224 | } | |
225 | else | |
226 | #endif /* AF_LOCAL */ | |
227 | { | |
228 | _httpAddrSetPort(addr, port); | |
229 | ||
7e86f2f6 | 230 | status = bind(fd, (struct sockaddr *)addr, (socklen_t)httpAddrLength(addr)); |
87e98392 MS |
231 | } |
232 | ||
233 | if (status) | |
a469f8a5 MS |
234 | { |
235 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
236 | ||
237 | close(fd); | |
238 | ||
239 | return (-1); | |
240 | } | |
241 | ||
87e98392 MS |
242 | /* |
243 | * Listen... | |
244 | */ | |
245 | ||
a469f8a5 MS |
246 | if (listen(fd, 5)) |
247 | { | |
248 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
249 | ||
250 | close(fd); | |
251 | ||
252 | return (-1); | |
253 | } | |
254 | ||
87e98392 MS |
255 | /* |
256 | * Close on exec... | |
257 | */ | |
258 | ||
19dc16f7 | 259 | #ifndef _WIN32 |
87e98392 | 260 | fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); |
19dc16f7 | 261 | #endif /* !_WIN32 */ |
87e98392 | 262 | |
a469f8a5 MS |
263 | #ifdef SO_NOSIGPIPE |
264 | /* | |
265 | * Disable SIGPIPE for this socket. | |
266 | */ | |
267 | ||
268 | val = 1; | |
db8b865d | 269 | setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val)); |
a469f8a5 MS |
270 | #endif /* SO_NOSIGPIPE */ |
271 | ||
272 | return (fd); | |
273 | } | |
274 | ||
275 | ||
ef416fc2 | 276 | /* |
277 | * 'httpAddrLocalhost()' - Check for the local loopback address. | |
278 | * | |
8072030b | 279 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 280 | */ |
281 | ||
282 | int /* O - 1 if local host, 0 otherwise */ | |
283 | httpAddrLocalhost( | |
284 | const http_addr_t *addr) /* I - Address to check */ | |
285 | { | |
89d46774 | 286 | if (!addr) |
287 | return (1); | |
288 | ||
ef416fc2 | 289 | #ifdef AF_INET6 |
290 | if (addr->addr.sa_family == AF_INET6 && | |
fa73b229 | 291 | IN6_IS_ADDR_LOOPBACK(&(addr->ipv6.sin6_addr))) |
ef416fc2 | 292 | return (1); |
293 | #endif /* AF_INET6 */ | |
294 | ||
295 | #ifdef AF_LOCAL | |
296 | if (addr->addr.sa_family == AF_LOCAL) | |
297 | return (1); | |
298 | #endif /* AF_LOCAL */ | |
299 | ||
300 | if (addr->addr.sa_family == AF_INET && | |
e07d4801 | 301 | (ntohl(addr->ipv4.sin_addr.s_addr) & 0xff000000) == 0x7f000000) |
ef416fc2 | 302 | return (1); |
303 | ||
304 | return (0); | |
305 | } | |
306 | ||
307 | ||
ef416fc2 | 308 | /* |
309 | * 'httpAddrLookup()' - Lookup the hostname associated with the address. | |
310 | * | |
8072030b | 311 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 312 | */ |
313 | ||
ecdc0628 | 314 | char * /* O - Host name */ |
315 | httpAddrLookup( | |
316 | const http_addr_t *addr, /* I - Address to lookup */ | |
317 | char *name, /* I - Host name buffer */ | |
318 | int namelen) /* I - Size of name buffer */ | |
ef416fc2 | 319 | { |
49d87452 MS |
320 | _cups_globals_t *cg = _cupsGlobals(); |
321 | /* Global data */ | |
322 | ||
323 | ||
807315e6 | 324 | DEBUG_printf(("httpAddrLookup(addr=%p, name=%p, namelen=%d)", (void *)addr, (void *)name, namelen)); |
ef416fc2 | 325 | |
326 | /* | |
327 | * Range check input... | |
328 | */ | |
329 | ||
330 | if (!addr || !name || namelen <= 2) | |
331 | { | |
332 | if (name && namelen >= 1) | |
333 | *name = '\0'; | |
334 | ||
335 | return (NULL); | |
336 | } | |
337 | ||
338 | #ifdef AF_LOCAL | |
339 | if (addr->addr.sa_family == AF_LOCAL) | |
49d87452 | 340 | { |
07623986 | 341 | strlcpy(name, addr->un.sun_path, (size_t)namelen); |
49d87452 MS |
342 | return (name); |
343 | } | |
ef416fc2 | 344 | #endif /* AF_LOCAL */ |
49d87452 | 345 | |
d2354e63 MS |
346 | /* |
347 | * Optimize lookups for localhost/loopback addresses... | |
348 | */ | |
349 | ||
350 | if (httpAddrLocalhost(addr)) | |
351 | { | |
07623986 | 352 | strlcpy(name, "localhost", (size_t)namelen); |
d2354e63 MS |
353 | return (name); |
354 | } | |
355 | ||
49d87452 MS |
356 | #ifdef HAVE_RES_INIT |
357 | /* | |
358 | * STR #2920: Initialize resolver after failure in cups-polld | |
359 | * | |
360 | * If the previous lookup failed, re-initialize the resolver to prevent | |
361 | * temporary network errors from persisting. This *should* be handled by | |
362 | * the resolver libraries, but apparently the glibc folks do not agree. | |
363 | * | |
364 | * We set a flag at the end of this function if we encounter an error that | |
365 | * requires reinitialization of the resolver functions. We then call | |
366 | * res_init() if the flag is set on the next call here or in httpAddrLookup(). | |
367 | */ | |
368 | ||
369 | if (cg->need_res_init) | |
370 | { | |
371 | res_init(); | |
372 | ||
373 | cg->need_res_init = 0; | |
374 | } | |
375 | #endif /* HAVE_RES_INIT */ | |
376 | ||
ef416fc2 | 377 | #ifdef HAVE_GETNAMEINFO |
378 | { | |
db1f069b MS |
379 | /* |
380 | * STR #2486: httpAddrLookup() fails when getnameinfo() returns EAI_AGAIN | |
381 | * | |
382 | * FWIW, I think this is really a bug in the implementation of | |
383 | * getnameinfo(), but falling back on httpAddrString() is easy to | |
384 | * do... | |
385 | */ | |
ef416fc2 | 386 | |
7e86f2f6 | 387 | int error = getnameinfo(&addr->addr, (socklen_t)httpAddrLength(addr), name, (socklen_t)namelen, NULL, 0, 0); |
49d87452 MS |
388 | |
389 | if (error) | |
390 | { | |
391 | if (error == EAI_FAIL) | |
392 | cg->need_res_init = 1; | |
393 | ||
db1f069b | 394 | return (httpAddrString(addr, name, namelen)); |
49d87452 | 395 | } |
ef416fc2 | 396 | } |
397 | #else | |
398 | { | |
399 | struct hostent *host; /* Host from name service */ | |
400 | ||
401 | ||
402 | # ifdef AF_INET6 | |
403 | if (addr->addr.sa_family == AF_INET6) | |
3dd9c340 | 404 | host = gethostbyaddr((char *)&(addr->ipv6.sin6_addr), |
ef416fc2 | 405 | sizeof(struct in_addr), AF_INET6); |
406 | else | |
407 | # endif /* AF_INET6 */ | |
3dd9c340 | 408 | host = gethostbyaddr((char *)&(addr->ipv4.sin_addr), |
ef416fc2 | 409 | sizeof(struct in_addr), AF_INET); |
410 | ||
411 | if (host == NULL) | |
412 | { | |
413 | /* | |
414 | * No hostname, so return the raw address... | |
415 | */ | |
416 | ||
49d87452 MS |
417 | if (h_errno == NO_RECOVERY) |
418 | cg->need_res_init = 1; | |
419 | ||
420 | return (httpAddrString(addr, name, namelen)); | |
ef416fc2 | 421 | } |
422 | ||
07623986 | 423 | strlcpy(name, host->h_name, (size_t)namelen); |
ef416fc2 | 424 | } |
425 | #endif /* HAVE_GETNAMEINFO */ | |
426 | ||
e07d4801 MS |
427 | DEBUG_printf(("1httpAddrLookup: returning \"%s\"...", name)); |
428 | ||
ef416fc2 | 429 | return (name); |
430 | } | |
431 | ||
432 | ||
5ec1fd3d MS |
433 | /* |
434 | * 'httpAddrFamily()' - Get the address family of an address. | |
435 | */ | |
436 | ||
437 | int /* O - Address family */ | |
438 | httpAddrFamily(http_addr_t *addr) /* I - Address */ | |
439 | { | |
440 | if (addr) | |
441 | return (addr->addr.sa_family); | |
442 | else | |
443 | return (0); | |
444 | } | |
445 | ||
446 | ||
1ff0402e | 447 | /* |
a469f8a5 MS |
448 | * 'httpAddrPort()' - Get the port number associated with an address. |
449 | * | |
8072030b | 450 | * @since CUPS 1.7/macOS 10.9@ |
1ff0402e MS |
451 | */ |
452 | ||
453 | int /* O - Port number */ | |
a469f8a5 | 454 | httpAddrPort(http_addr_t *addr) /* I - Address */ |
1ff0402e | 455 | { |
5f64df29 | 456 | if (!addr) |
5ec1fd3d | 457 | return (-1); |
1ff0402e | 458 | #ifdef AF_INET6 |
5f64df29 | 459 | else if (addr->addr.sa_family == AF_INET6) |
1ff0402e | 460 | return (ntohs(addr->ipv6.sin6_port)); |
1ff0402e | 461 | #endif /* AF_INET6 */ |
5f64df29 | 462 | else if (addr->addr.sa_family == AF_INET) |
1ff0402e MS |
463 | return (ntohs(addr->ipv4.sin_port)); |
464 | else | |
5ec1fd3d | 465 | return (0); |
1ff0402e MS |
466 | } |
467 | ||
468 | ||
22c9029b MS |
469 | /* |
470 | * '_httpAddrSetPort()' - Set the port number associated with an address. | |
471 | */ | |
472 | ||
473 | void | |
474 | _httpAddrSetPort(http_addr_t *addr, /* I - Address */ | |
475 | int port) /* I - Port */ | |
476 | { | |
477 | if (!addr || port <= 0) | |
478 | return; | |
479 | ||
480 | #ifdef AF_INET6 | |
481 | if (addr->addr.sa_family == AF_INET6) | |
482 | addr->ipv6.sin6_port = htons(port); | |
483 | else | |
484 | #endif /* AF_INET6 */ | |
485 | if (addr->addr.sa_family == AF_INET) | |
486 | addr->ipv4.sin_port = htons(port); | |
487 | } | |
488 | ||
489 | ||
ef416fc2 | 490 | /* |
ecdc0628 | 491 | * 'httpAddrString()' - Convert an address to a numeric string. |
ef416fc2 | 492 | * |
8072030b | 493 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 494 | */ |
495 | ||
ecdc0628 | 496 | char * /* O - Numeric address string */ |
497 | httpAddrString(const http_addr_t *addr, /* I - Address to convert */ | |
498 | char *s, /* I - String buffer */ | |
499 | int slen) /* I - Length of string */ | |
ef416fc2 | 500 | { |
807315e6 | 501 | DEBUG_printf(("httpAddrString(addr=%p, s=%p, slen=%d)", (void *)addr, (void *)s, slen)); |
ef416fc2 | 502 | |
503 | /* | |
504 | * Range check input... | |
505 | */ | |
506 | ||
507 | if (!addr || !s || slen <= 2) | |
508 | { | |
509 | if (s && slen >= 1) | |
510 | *s = '\0'; | |
511 | ||
512 | return (NULL); | |
513 | } | |
514 | ||
515 | #ifdef AF_LOCAL | |
516 | if (addr->addr.sa_family == AF_LOCAL) | |
771bd8cb MS |
517 | { |
518 | if (addr->un.sun_path[0] == '/') | |
07623986 | 519 | strlcpy(s, addr->un.sun_path, (size_t)slen); |
771bd8cb | 520 | else |
07623986 | 521 | strlcpy(s, "localhost", (size_t)slen); |
771bd8cb | 522 | } |
ef416fc2 | 523 | else |
524 | #endif /* AF_LOCAL */ | |
b423cd4c | 525 | if (addr->addr.sa_family == AF_INET) |
ef416fc2 | 526 | { |
b423cd4c | 527 | unsigned temp; /* Temporary address */ |
ef416fc2 | 528 | |
b423cd4c | 529 | temp = ntohl(addr->ipv4.sin_addr.s_addr); |
530 | ||
07623986 | 531 | snprintf(s, (size_t)slen, "%d.%d.%d.%d", (temp >> 24) & 255, |
b423cd4c | 532 | (temp >> 16) & 255, (temp >> 8) & 255, temp & 255); |
533 | } | |
534 | #ifdef AF_INET6 | |
535 | else if (addr->addr.sa_family == AF_INET6) | |
536 | { | |
82f97232 MS |
537 | char *sptr, /* Pointer into string */ |
538 | temps[64]; /* Temporary string for address */ | |
539 | ||
b423cd4c | 540 | # ifdef HAVE_GETNAMEINFO |
7e86f2f6 | 541 | if (getnameinfo(&addr->addr, (socklen_t)httpAddrLength(addr), temps, sizeof(temps), NULL, 0, NI_NUMERICHOST)) |
ef416fc2 | 542 | { |
543 | /* | |
544 | * If we get an error back, then the address type is not supported | |
545 | * and we should zero out the buffer... | |
546 | */ | |
547 | ||
548 | s[0] = '\0'; | |
549 | ||
550 | return (NULL); | |
551 | } | |
82f97232 MS |
552 | else if ((sptr = strchr(temps, '%')) != NULL) |
553 | { | |
554 | /* | |
555 | * Convert "%zone" to "+zone" to match URI form... | |
556 | */ | |
557 | ||
558 | *sptr = '+'; | |
559 | } | |
560 | ||
b423cd4c | 561 | # else |
b423cd4c | 562 | int i; /* Looping var */ |
563 | unsigned temp; /* Current value */ | |
564 | const char *prefix; /* Prefix for address */ | |
565 | ||
566 | ||
567 | prefix = ""; | |
82f97232 | 568 | for (sptr = temps, i = 0; i < 4 && addr->ipv6.sin6_addr.s6_addr32[i]; i ++) |
ef416fc2 | 569 | { |
b423cd4c | 570 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 571 | |
07623986 | 572 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, (temp >> 16) & 0xffff); |
b423cd4c | 573 | prefix = ":"; |
b423cd4c | 574 | sptr += strlen(sptr); |
ef416fc2 | 575 | |
b423cd4c | 576 | temp &= 0xffff; |
ef416fc2 | 577 | |
b423cd4c | 578 | if (temp || i == 3 || addr->ipv6.sin6_addr.s6_addr32[i + 1]) |
579 | { | |
07623986 | 580 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, temp); |
ef416fc2 | 581 | sptr += strlen(sptr); |
ef416fc2 | 582 | } |
b423cd4c | 583 | } |
584 | ||
585 | if (i < 4) | |
586 | { | |
587 | while (i < 4 && !addr->ipv6.sin6_addr.s6_addr32[i]) | |
588 | i ++; | |
ef416fc2 | 589 | |
590 | if (i < 4) | |
591 | { | |
07623986 | 592 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s:", prefix); |
b423cd4c | 593 | prefix = ":"; |
b423cd4c | 594 | sptr += strlen(sptr); |
ef416fc2 | 595 | |
b423cd4c | 596 | for (; i < 4; i ++) |
ef416fc2 | 597 | { |
b423cd4c | 598 | temp = ntohl(addr->ipv6.sin6_addr.s6_addr32[i]); |
ef416fc2 | 599 | |
82f97232 MS |
600 | if ((temp & 0xffff0000) || |
601 | (i > 0 && addr->ipv6.sin6_addr.s6_addr32[i - 1])) | |
ef416fc2 | 602 | { |
07623986 | 603 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, (temp >> 16) & 0xffff); |
ef416fc2 | 604 | sptr += strlen(sptr); |
b423cd4c | 605 | } |
ef416fc2 | 606 | |
07623986 | 607 | snprintf(sptr, sizeof(temps) - (size_t)(sptr - temps), "%s%x", prefix, temp & 0xffff); |
b423cd4c | 608 | sptr += strlen(sptr); |
ef416fc2 | 609 | } |
610 | } | |
b423cd4c | 611 | else if (sptr == s) |
612 | { | |
613 | /* | |
614 | * Empty address... | |
615 | */ | |
ef416fc2 | 616 | |
82f97232 | 617 | strlcpy(temps, "::", sizeof(temps)); |
b423cd4c | 618 | } |
619 | else | |
620 | { | |
621 | /* | |
622 | * Empty at end... | |
623 | */ | |
ef416fc2 | 624 | |
07623986 | 625 | strlcpy(sptr, "::", sizeof(temps) - (size_t)(sptr - temps)); |
b423cd4c | 626 | } |
ef416fc2 | 627 | } |
b423cd4c | 628 | # endif /* HAVE_GETNAMEINFO */ |
82f97232 MS |
629 | |
630 | /* | |
631 | * Add "[v1." and "]" around IPv6 address to convert to URI form. | |
632 | */ | |
633 | ||
07623986 | 634 | snprintf(s, (size_t)slen, "[v1.%s]", temps); |
ef416fc2 | 635 | } |
b423cd4c | 636 | #endif /* AF_INET6 */ |
637 | else | |
07623986 | 638 | strlcpy(s, "UNKNOWN", (size_t)slen); |
ef416fc2 | 639 | |
e07d4801 | 640 | DEBUG_printf(("1httpAddrString: returning \"%s\"...", s)); |
ef416fc2 | 641 | |
642 | return (s); | |
643 | } | |
644 | ||
645 | ||
996acce8 MS |
646 | /* |
647 | * 'httpGetAddress()' - Get the address of the connected peer of a connection. | |
648 | * | |
98d88c8d MS |
649 | * For connections created with @link httpConnect2@, the address is for the |
650 | * server. For connections created with @link httpAccept@, the address is for | |
651 | * the client. | |
652 | * | |
996acce8 MS |
653 | * Returns @code NULL@ if the socket is currently unconnected. |
654 | * | |
e1f19878 | 655 | * @since CUPS 2.0/OS 10.10@ |
996acce8 MS |
656 | */ |
657 | ||
658 | http_addr_t * /* O - Connected address or @code NULL@ */ | |
659 | httpGetAddress(http_t *http) /* I - HTTP connection */ | |
660 | { | |
661 | if (http) | |
662 | return (http->hostaddr); | |
663 | else | |
664 | return (NULL); | |
665 | } | |
666 | ||
667 | ||
ef416fc2 | 668 | /* |
669 | * 'httpGetHostByName()' - Lookup a hostname or IPv4 address, and return | |
670 | * address records for the specified name. | |
671 | * | |
98d88c8d | 672 | * @deprecated@ @exclude all@ |
ef416fc2 | 673 | */ |
674 | ||
675 | struct hostent * /* O - Host entry */ | |
676 | httpGetHostByName(const char *name) /* I - Hostname or IP address */ | |
677 | { | |
678 | const char *nameptr; /* Pointer into name */ | |
679 | unsigned ip[4]; /* IP address components */ | |
680 | _cups_globals_t *cg = _cupsGlobals(); | |
681 | /* Pointer to library globals */ | |
682 | ||
683 | ||
e07d4801 | 684 | DEBUG_printf(("httpGetHostByName(name=\"%s\")", name)); |
ef416fc2 | 685 | |
686 | /* | |
687 | * Avoid lookup delays and configuration problems when connecting | |
688 | * to the localhost address... | |
689 | */ | |
690 | ||
691 | if (!strcmp(name, "localhost")) | |
692 | name = "127.0.0.1"; | |
693 | ||
694 | /* | |
695 | * This function is needed because some operating systems have a | |
696 | * buggy implementation of gethostbyname() that does not support | |
697 | * IP addresses. If the first character of the name string is a | |
698 | * number, then sscanf() is used to extract the IP components. | |
699 | * We then pack the components into an IPv4 address manually, | |
700 | * since the inet_aton() function is deprecated. We use the | |
701 | * htonl() macro to get the right byte order for the address. | |
702 | * | |
703 | * We also support domain sockets when supported by the underlying | |
704 | * OS... | |
705 | */ | |
706 | ||
707 | #ifdef AF_LOCAL | |
708 | if (name[0] == '/') | |
709 | { | |
710 | /* | |
711 | * A domain socket address, so make an AF_LOCAL entry and return it... | |
712 | */ | |
713 | ||
714 | cg->hostent.h_name = (char *)name; | |
715 | cg->hostent.h_aliases = NULL; | |
716 | cg->hostent.h_addrtype = AF_LOCAL; | |
7e86f2f6 | 717 | cg->hostent.h_length = (int)strlen(name) + 1; |
ef416fc2 | 718 | cg->hostent.h_addr_list = cg->ip_ptrs; |
719 | cg->ip_ptrs[0] = (char *)name; | |
720 | cg->ip_ptrs[1] = NULL; | |
721 | ||
e07d4801 | 722 | DEBUG_puts("1httpGetHostByName: returning domain socket address..."); |
ef416fc2 | 723 | |
724 | return (&cg->hostent); | |
725 | } | |
726 | #endif /* AF_LOCAL */ | |
727 | ||
728 | for (nameptr = name; isdigit(*nameptr & 255) || *nameptr == '.'; nameptr ++); | |
729 | ||
730 | if (!*nameptr) | |
731 | { | |
732 | /* | |
733 | * We have an IPv4 address; break it up and provide the host entry | |
734 | * to the caller. | |
735 | */ | |
736 | ||
737 | if (sscanf(name, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) | |
738 | return (NULL); /* Must have 4 numbers */ | |
739 | ||
740 | if (ip[0] > 255 || ip[1] > 255 || ip[2] > 255 || ip[3] > 255) | |
741 | return (NULL); /* Invalid byte ranges! */ | |
742 | ||
da003234 MS |
743 | cg->ip_addr = htonl((((((((unsigned)ip[0] << 8) | (unsigned)ip[1]) << 8) | |
744 | (unsigned)ip[2]) << 8) | | |
745 | (unsigned)ip[3])); | |
ef416fc2 | 746 | |
747 | /* | |
748 | * Fill in the host entry and return it... | |
749 | */ | |
750 | ||
751 | cg->hostent.h_name = (char *)name; | |
752 | cg->hostent.h_aliases = NULL; | |
753 | cg->hostent.h_addrtype = AF_INET; | |
754 | cg->hostent.h_length = 4; | |
755 | cg->hostent.h_addr_list = cg->ip_ptrs; | |
756 | cg->ip_ptrs[0] = (char *)&(cg->ip_addr); | |
757 | cg->ip_ptrs[1] = NULL; | |
758 | ||
e07d4801 | 759 | DEBUG_puts("1httpGetHostByName: returning IPv4 address..."); |
ef416fc2 | 760 | |
761 | return (&cg->hostent); | |
762 | } | |
763 | else | |
764 | { | |
765 | /* | |
766 | * Use the gethostbyname() function to get the IPv4 address for | |
767 | * the name... | |
768 | */ | |
769 | ||
e07d4801 | 770 | DEBUG_puts("1httpGetHostByName: returning domain lookup address(es)..."); |
ef416fc2 | 771 | |
772 | return (gethostbyname(name)); | |
773 | } | |
774 | } | |
775 | ||
776 | ||
777 | /* | |
757d2cad | 778 | * 'httpGetHostname()' - Get the FQDN for the connection or local system. |
ef416fc2 | 779 | * |
757d2cad | 780 | * When "http" points to a connected socket, return the hostname or |
48bd1142 MS |
781 | * address that was used in the call to httpConnect() or httpConnectEncrypt(), |
782 | * or the address of the client for the connection from httpAcceptConnection(). | |
757d2cad | 783 | * Otherwise, return the FQDN for the local system using both gethostname() |
784 | * and gethostbyname() to get the local hostname with domain. | |
ef416fc2 | 785 | * |
8072030b | 786 | * @since CUPS 1.2/macOS 10.5@ |
ef416fc2 | 787 | */ |
788 | ||
757d2cad | 789 | const char * /* O - FQDN for connection or system */ |
790 | httpGetHostname(http_t *http, /* I - HTTP connection or NULL */ | |
791 | char *s, /* I - String buffer for name */ | |
792 | int slen) /* I - Size of buffer */ | |
ef416fc2 | 793 | { |
757d2cad | 794 | if (http) |
480ef0fe | 795 | { |
5ec1fd3d MS |
796 | if (!s || slen <= 1) |
797 | { | |
798 | if (http->hostname[0] == '/') | |
799 | return ("localhost"); | |
800 | else | |
801 | return (http->hostname); | |
802 | } | |
803 | else if (http->hostname[0] == '/') | |
07623986 | 804 | strlcpy(s, "localhost", (size_t)slen); |
480ef0fe | 805 | else |
07623986 | 806 | strlcpy(s, http->hostname, (size_t)slen); |
480ef0fe | 807 | } |
757d2cad | 808 | else |
ef416fc2 | 809 | { |
810 | /* | |
757d2cad | 811 | * Get the hostname... |
ef416fc2 | 812 | */ |
813 | ||
5ec1fd3d MS |
814 | if (!s || slen <= 1) |
815 | return (NULL); | |
da003234 | 816 | |
7e86f2f6 | 817 | if (gethostname(s, (size_t)slen) < 0) |
07623986 | 818 | strlcpy(s, "localhost", (size_t)slen); |
757d2cad | 819 | |
820 | if (!strchr(s, '.')) | |
821 | { | |
0837b7e8 | 822 | #ifdef HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME |
1106b00e MS |
823 | /* |
824 | * The hostname is not a FQDN, so use the local hostname from the | |
825 | * SystemConfiguration framework... | |
826 | */ | |
827 | ||
828 | SCDynamicStoreRef sc = SCDynamicStoreCreate(kCFAllocatorDefault, | |
829 | CFSTR("libcups"), NULL, NULL); | |
830 | /* System configuration data */ | |
831 | CFStringRef local = sc ? SCDynamicStoreCopyLocalHostName(sc) : NULL; | |
832 | /* Local host name */ | |
833 | char localStr[1024]; /* Local host name C string */ | |
834 | ||
835 | if (local && CFStringGetCString(local, localStr, sizeof(localStr), | |
836 | kCFStringEncodingUTF8)) | |
837 | { | |
838 | /* | |
839 | * Append ".local." to the hostname we get... | |
840 | */ | |
841 | ||
07623986 | 842 | snprintf(s, (size_t)slen, "%s.local.", localStr); |
1106b00e MS |
843 | } |
844 | ||
845 | if (local) | |
846 | CFRelease(local); | |
847 | if (sc) | |
848 | CFRelease(sc); | |
849 | ||
850 | #else | |
757d2cad | 851 | /* |
852 | * The hostname is not a FQDN, so look it up... | |
853 | */ | |
854 | ||
1106b00e MS |
855 | struct hostent *host; /* Host entry to get FQDN */ |
856 | ||
89d46774 | 857 | if ((host = gethostbyname(s)) != NULL && host->h_name) |
1106b00e MS |
858 | { |
859 | /* | |
860 | * Use the resolved hostname... | |
861 | */ | |
862 | ||
07623986 | 863 | strlcpy(s, host->h_name, (size_t)slen); |
1106b00e | 864 | } |
0837b7e8 | 865 | #endif /* HAVE_SCDYNAMICSTORECOPYCOMPUTERNAME */ |
757d2cad | 866 | } |
83ce8172 MS |
867 | |
868 | /* | |
869 | * Make sure .local hostnames end with a period... | |
870 | */ | |
871 | ||
872 | if (strlen(s) > 6 && !strcmp(s + strlen(s) - 6, ".local")) | |
c6cc3553 | 873 | strlcat(s, ".", (size_t)slen); |
ef416fc2 | 874 | } |
875 | ||
bd31658d MS |
876 | /* |
877 | * Convert the hostname to lowercase as needed... | |
878 | */ | |
879 | ||
880 | if (s[0] != '/') | |
881 | { | |
882 | char *ptr; /* Pointer into string */ | |
883 | ||
884 | for (ptr = s; *ptr; ptr ++) | |
885 | *ptr = (char)_cups_tolower((int)*ptr); | |
886 | } | |
887 | ||
ef416fc2 | 888 | /* |
889 | * Return the hostname with as much domain info as we have... | |
890 | */ | |
891 | ||
892 | return (s); | |
893 | } | |
894 | ||
895 | ||
48bd1142 MS |
896 | /* |
897 | * 'httpResolveHostname()' - Resolve the hostname of the HTTP connection | |
898 | * address. | |
899 | * | |
e1f19878 | 900 | * @since CUPS 2.0/OS 10.10@ |
48bd1142 MS |
901 | */ |
902 | ||
903 | const char * /* O - Resolved hostname or @code NULL@ */ | |
904 | httpResolveHostname(http_t *http, /* I - HTTP connection */ | |
905 | char *buffer, /* I - Hostname buffer */ | |
906 | size_t bufsize) /* I - Size of buffer */ | |
907 | { | |
908 | if (!http) | |
909 | return (NULL); | |
910 | ||
911 | if (isdigit(http->hostname[0] & 255) || http->hostname[0] == '[') | |
912 | { | |
913 | char temp[1024]; /* Temporary string */ | |
914 | ||
915 | if (httpAddrLookup(http->hostaddr, temp, sizeof(temp))) | |
916 | strlcpy(http->hostname, temp, sizeof(http->hostname)); | |
917 | else | |
918 | return (NULL); | |
919 | } | |
920 | ||
921 | if (buffer) | |
922 | { | |
923 | if (http->hostname[0] == '/') | |
924 | strlcpy(buffer, "localhost", bufsize); | |
925 | else | |
926 | strlcpy(buffer, http->hostname, bufsize); | |
927 | ||
928 | return (buffer); | |
929 | } | |
930 | else if (http->hostname[0] == '/') | |
931 | return ("localhost"); | |
932 | else | |
933 | return (http->hostname); | |
934 | } |