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1 | /* | |
2 | * "$Id$" | |
3 | * | |
4 | * HTTP support routines for CUPS. | |
5 | * | |
6 | * Copyright 2007-2013 by Apple Inc. | |
7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. | |
8 | * | |
9 | * These coded instructions, statements, and computer programs are the | |
10 | * property of Apple Inc. and are protected by Federal copyright | |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
14 | * | |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | */ | |
17 | ||
18 | /* | |
19 | * Include necessary headers... | |
20 | */ | |
21 | ||
22 | #include "cups-private.h" | |
23 | #ifdef HAVE_DNSSD | |
24 | # include <dns_sd.h> | |
25 | # ifdef WIN32 | |
26 | # include <io.h> | |
27 | # elif defined(HAVE_POLL) | |
28 | # include <poll.h> | |
29 | # else | |
30 | # include <sys/select.h> | |
31 | # endif /* WIN32 */ | |
32 | #elif defined(HAVE_AVAHI) | |
33 | # include <avahi-client/client.h> | |
34 | # include <avahi-client/lookup.h> | |
35 | # include <avahi-common/simple-watch.h> | |
36 | #endif /* HAVE_DNSSD */ | |
37 | ||
38 | ||
39 | /* | |
40 | * Local types... | |
41 | */ | |
42 | ||
43 | typedef struct _http_uribuf_s /* URI buffer */ | |
44 | { | |
45 | #ifdef HAVE_AVAHI | |
46 | AvahiSimplePoll *poll; /* Poll state */ | |
47 | #endif /* HAVE_AVAHI */ | |
48 | char *buffer; /* Pointer to buffer */ | |
49 | size_t bufsize; /* Size of buffer */ | |
50 | int options; /* Options passed to _httpResolveURI */ | |
51 | const char *resource; /* Resource from URI */ | |
52 | const char *uuid; /* UUID from URI */ | |
53 | } _http_uribuf_t; | |
54 | ||
55 | ||
56 | /* | |
57 | * Local globals... | |
58 | */ | |
59 | ||
60 | static const char * const http_days[7] =/* Days of the week */ | |
61 | { | |
62 | "Sun", | |
63 | "Mon", | |
64 | "Tue", | |
65 | "Wed", | |
66 | "Thu", | |
67 | "Fri", | |
68 | "Sat" | |
69 | }; | |
70 | static const char * const http_months[12] = | |
71 | { /* Months of the year */ | |
72 | "Jan", | |
73 | "Feb", | |
74 | "Mar", | |
75 | "Apr", | |
76 | "May", | |
77 | "Jun", | |
78 | "Jul", | |
79 | "Aug", | |
80 | "Sep", | |
81 | "Oct", | |
82 | "Nov", | |
83 | "Dec" | |
84 | }; | |
85 | static const char * const http_states[] = | |
86 | { /* HTTP state strings */ | |
87 | "HTTP_STATE_ERROR", | |
88 | "HTTP_STATE_WAITING", | |
89 | "HTTP_STATE_OPTIONS", | |
90 | "HTTP_STATE_GET", | |
91 | "HTTP_STATE_GET_SEND", | |
92 | "HTTP_STATE_HEAD", | |
93 | "HTTP_STATE_POST", | |
94 | "HTTP_STATE_POST_RECV", | |
95 | "HTTP_STATE_POST_SEND", | |
96 | "HTTP_STATE_PUT", | |
97 | "HTTP_STATE_PUT_RECV", | |
98 | "HTTP_STATE_DELETE", | |
99 | "HTTP_STATE_TRACE", | |
100 | "HTTP_STATE_CONNECT", | |
101 | "HTTP_STATE_STATUS", | |
102 | "HTTP_STATE_UNKNOWN_METHOD", | |
103 | "HTTP_STATE_UNKNOWN_VERSION" | |
104 | }; | |
105 | ||
106 | ||
107 | /* | |
108 | * Local functions... | |
109 | */ | |
110 | ||
111 | static const char *http_copy_decode(char *dst, const char *src, | |
112 | int dstsize, const char *term, | |
113 | int decode); | |
114 | static char *http_copy_encode(char *dst, const char *src, | |
115 | char *dstend, const char *reserved, | |
116 | const char *term, int encode); | |
117 | #ifdef HAVE_DNSSD | |
118 | static void DNSSD_API http_resolve_cb(DNSServiceRef sdRef, | |
119 | DNSServiceFlags flags, | |
120 | uint32_t interfaceIndex, | |
121 | DNSServiceErrorType errorCode, | |
122 | const char *fullName, | |
123 | const char *hostTarget, | |
124 | uint16_t port, uint16_t txtLen, | |
125 | const unsigned char *txtRecord, | |
126 | void *context); | |
127 | #endif /* HAVE_DNSSD */ | |
128 | ||
129 | #ifdef HAVE_AVAHI | |
130 | static void http_client_cb(AvahiClient *client, | |
131 | AvahiClientState state, void *simple_poll); | |
132 | static int http_poll_cb(struct pollfd *pollfds, unsigned int num_pollfds, | |
133 | int timeout, void *context); | |
134 | static void http_resolve_cb(AvahiServiceResolver *resolver, | |
135 | AvahiIfIndex interface, | |
136 | AvahiProtocol protocol, | |
137 | AvahiResolverEvent event, | |
138 | const char *name, const char *type, | |
139 | const char *domain, const char *host_name, | |
140 | const AvahiAddress *address, uint16_t port, | |
141 | AvahiStringList *txt, | |
142 | AvahiLookupResultFlags flags, void *context); | |
143 | #endif /* HAVE_AVAHI */ | |
144 | ||
145 | ||
146 | /* | |
147 | * 'httpAssembleURI()' - Assemble a uniform resource identifier from its | |
148 | * components. | |
149 | * | |
150 | * This function escapes reserved characters in the URI depending on the | |
151 | * value of the "encoding" argument. You should use this function in | |
152 | * place of traditional string functions whenever you need to create a | |
153 | * URI string. | |
154 | * | |
155 | * @since CUPS 1.2/OS X 10.5@ | |
156 | */ | |
157 | ||
158 | http_uri_status_t /* O - URI status */ | |
159 | httpAssembleURI( | |
160 | http_uri_coding_t encoding, /* I - Encoding flags */ | |
161 | char *uri, /* I - URI buffer */ | |
162 | int urilen, /* I - Size of URI buffer */ | |
163 | const char *scheme, /* I - Scheme name */ | |
164 | const char *username, /* I - Username */ | |
165 | const char *host, /* I - Hostname or address */ | |
166 | int port, /* I - Port number */ | |
167 | const char *resource) /* I - Resource */ | |
168 | { | |
169 | char *ptr, /* Pointer into URI buffer */ | |
170 | *end; /* End of URI buffer */ | |
171 | ||
172 | ||
173 | /* | |
174 | * Range check input... | |
175 | */ | |
176 | ||
177 | if (!uri || urilen < 1 || !scheme || port < 0) | |
178 | { | |
179 | if (uri) | |
180 | *uri = '\0'; | |
181 | ||
182 | return (HTTP_URI_STATUS_BAD_ARGUMENTS); | |
183 | } | |
184 | ||
185 | /* | |
186 | * Assemble the URI starting with the scheme... | |
187 | */ | |
188 | ||
189 | end = uri + urilen - 1; | |
190 | ptr = http_copy_encode(uri, scheme, end, NULL, NULL, 0); | |
191 | ||
192 | if (!ptr) | |
193 | goto assemble_overflow; | |
194 | ||
195 | if (!strcmp(scheme, "mailto")) | |
196 | { | |
197 | /* | |
198 | * mailto: only has :, no //... | |
199 | */ | |
200 | ||
201 | if (ptr < end) | |
202 | *ptr++ = ':'; | |
203 | else | |
204 | goto assemble_overflow; | |
205 | } | |
206 | else | |
207 | { | |
208 | /* | |
209 | * Schemes other than mailto: all have //... | |
210 | */ | |
211 | ||
212 | if ((ptr + 2) < end) | |
213 | { | |
214 | *ptr++ = ':'; | |
215 | *ptr++ = '/'; | |
216 | *ptr++ = '/'; | |
217 | } | |
218 | else | |
219 | goto assemble_overflow; | |
220 | } | |
221 | ||
222 | /* | |
223 | * Next the username and hostname, if any... | |
224 | */ | |
225 | ||
226 | if (host) | |
227 | { | |
228 | const char *hostptr; /* Pointer into hostname */ | |
229 | int have_ipv6; /* Do we have an IPv6 address? */ | |
230 | ||
231 | if (username && *username) | |
232 | { | |
233 | /* | |
234 | * Add username@ first... | |
235 | */ | |
236 | ||
237 | ptr = http_copy_encode(ptr, username, end, "/?#[]@", NULL, | |
238 | encoding & HTTP_URI_CODING_USERNAME); | |
239 | ||
240 | if (!ptr) | |
241 | goto assemble_overflow; | |
242 | ||
243 | if (ptr < end) | |
244 | *ptr++ = '@'; | |
245 | else | |
246 | goto assemble_overflow; | |
247 | } | |
248 | ||
249 | /* | |
250 | * Then add the hostname. Since IPv6 is a particular pain to deal | |
251 | * with, we have several special cases to deal with. If we get | |
252 | * an IPv6 address with brackets around it, assume it is already in | |
253 | * URI format. Since DNS-SD service names can sometimes look like | |
254 | * raw IPv6 addresses, we specifically look for "._tcp" in the name, | |
255 | * too... | |
256 | */ | |
257 | ||
258 | for (hostptr = host, | |
259 | have_ipv6 = strchr(host, ':') && !strstr(host, "._tcp"); | |
260 | *hostptr && have_ipv6; | |
261 | hostptr ++) | |
262 | if (*hostptr != ':' && !isxdigit(*hostptr & 255)) | |
263 | { | |
264 | have_ipv6 = *hostptr == '%'; | |
265 | break; | |
266 | } | |
267 | ||
268 | if (have_ipv6) | |
269 | { | |
270 | /* | |
271 | * We have a raw IPv6 address... | |
272 | */ | |
273 | ||
274 | if (strchr(host, '%') && !(encoding & HTTP_URI_CODING_RFC6874)) | |
275 | { | |
276 | /* | |
277 | * We have a link-local address, add "[v1." prefix... | |
278 | */ | |
279 | ||
280 | if ((ptr + 4) < end) | |
281 | { | |
282 | *ptr++ = '['; | |
283 | *ptr++ = 'v'; | |
284 | *ptr++ = '1'; | |
285 | *ptr++ = '.'; | |
286 | } | |
287 | else | |
288 | goto assemble_overflow; | |
289 | } | |
290 | else | |
291 | { | |
292 | /* | |
293 | * We have a normal (or RFC 6874 link-local) address, add "[" prefix... | |
294 | */ | |
295 | ||
296 | if (ptr < end) | |
297 | *ptr++ = '['; | |
298 | else | |
299 | goto assemble_overflow; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Copy the rest of the IPv6 address, and terminate with "]". | |
304 | */ | |
305 | ||
306 | while (ptr < end && *host) | |
307 | { | |
308 | if (*host == '%') | |
309 | { | |
310 | /* | |
311 | * Convert/encode zone separator | |
312 | */ | |
313 | ||
314 | if (encoding & HTTP_URI_CODING_RFC6874) | |
315 | { | |
316 | if (ptr >= (end - 2)) | |
317 | goto assemble_overflow; | |
318 | ||
319 | *ptr++ = '%'; | |
320 | *ptr++ = '2'; | |
321 | *ptr++ = '5'; | |
322 | } | |
323 | else | |
324 | *ptr++ = '+'; | |
325 | ||
326 | host ++; | |
327 | } | |
328 | else | |
329 | *ptr++ = *host++; | |
330 | } | |
331 | ||
332 | if (*host) | |
333 | goto assemble_overflow; | |
334 | ||
335 | if (ptr < end) | |
336 | *ptr++ = ']'; | |
337 | else | |
338 | goto assemble_overflow; | |
339 | } | |
340 | else | |
341 | { | |
342 | /* | |
343 | * Otherwise, just copy the host string (the extra chars are not in the | |
344 | * "reg-name" ABNF rule; anything <= SP or >= DEL plus % gets automatically | |
345 | * percent-encoded. | |
346 | */ | |
347 | ||
348 | ptr = http_copy_encode(ptr, host, end, "\"#/:<>?@[\\]^`{|}", NULL, | |
349 | encoding & HTTP_URI_CODING_HOSTNAME); | |
350 | ||
351 | if (!ptr) | |
352 | goto assemble_overflow; | |
353 | } | |
354 | ||
355 | /* | |
356 | * Finish things off with the port number... | |
357 | */ | |
358 | ||
359 | if (port > 0) | |
360 | { | |
361 | snprintf(ptr, end - ptr + 1, ":%d", port); | |
362 | ptr += strlen(ptr); | |
363 | ||
364 | if (ptr >= end) | |
365 | goto assemble_overflow; | |
366 | } | |
367 | } | |
368 | ||
369 | /* | |
370 | * Last but not least, add the resource string... | |
371 | */ | |
372 | ||
373 | if (resource) | |
374 | { | |
375 | char *query; /* Pointer to query string */ | |
376 | ||
377 | ||
378 | /* | |
379 | * Copy the resource string up to the query string if present... | |
380 | */ | |
381 | ||
382 | query = strchr(resource, '?'); | |
383 | ptr = http_copy_encode(ptr, resource, end, NULL, "?", | |
384 | encoding & HTTP_URI_CODING_RESOURCE); | |
385 | if (!ptr) | |
386 | goto assemble_overflow; | |
387 | ||
388 | if (query) | |
389 | { | |
390 | /* | |
391 | * Copy query string without encoding... | |
392 | */ | |
393 | ||
394 | ptr = http_copy_encode(ptr, query, end, NULL, NULL, | |
395 | encoding & HTTP_URI_CODING_QUERY); | |
396 | if (!ptr) | |
397 | goto assemble_overflow; | |
398 | } | |
399 | } | |
400 | else if (ptr < end) | |
401 | *ptr++ = '/'; | |
402 | else | |
403 | goto assemble_overflow; | |
404 | ||
405 | /* | |
406 | * Nul-terminate the URI buffer and return with no errors... | |
407 | */ | |
408 | ||
409 | *ptr = '\0'; | |
410 | ||
411 | return (HTTP_URI_STATUS_OK); | |
412 | ||
413 | /* | |
414 | * Clear the URI string and return an overflow error; I don't usually | |
415 | * like goto's, but in this case it makes sense... | |
416 | */ | |
417 | ||
418 | assemble_overflow: | |
419 | ||
420 | *uri = '\0'; | |
421 | return (HTTP_URI_STATUS_OVERFLOW); | |
422 | } | |
423 | ||
424 | ||
425 | /* | |
426 | * 'httpAssembleURIf()' - Assemble a uniform resource identifier from its | |
427 | * components with a formatted resource. | |
428 | * | |
429 | * This function creates a formatted version of the resource string | |
430 | * argument "resourcef" and escapes reserved characters in the URI | |
431 | * depending on the value of the "encoding" argument. You should use | |
432 | * this function in place of traditional string functions whenever | |
433 | * you need to create a URI string. | |
434 | * | |
435 | * @since CUPS 1.2/OS X 10.5@ | |
436 | */ | |
437 | ||
438 | http_uri_status_t /* O - URI status */ | |
439 | httpAssembleURIf( | |
440 | http_uri_coding_t encoding, /* I - Encoding flags */ | |
441 | char *uri, /* I - URI buffer */ | |
442 | int urilen, /* I - Size of URI buffer */ | |
443 | const char *scheme, /* I - Scheme name */ | |
444 | const char *username, /* I - Username */ | |
445 | const char *host, /* I - Hostname or address */ | |
446 | int port, /* I - Port number */ | |
447 | const char *resourcef, /* I - Printf-style resource */ | |
448 | ...) /* I - Additional arguments as needed */ | |
449 | { | |
450 | va_list ap; /* Pointer to additional arguments */ | |
451 | char resource[1024]; /* Formatted resource string */ | |
452 | int bytes; /* Bytes in formatted string */ | |
453 | ||
454 | ||
455 | /* | |
456 | * Range check input... | |
457 | */ | |
458 | ||
459 | if (!uri || urilen < 1 || !scheme || port < 0 || !resourcef) | |
460 | { | |
461 | if (uri) | |
462 | *uri = '\0'; | |
463 | ||
464 | return (HTTP_URI_STATUS_BAD_ARGUMENTS); | |
465 | } | |
466 | ||
467 | /* | |
468 | * Format the resource string and assemble the URI... | |
469 | */ | |
470 | ||
471 | va_start(ap, resourcef); | |
472 | bytes = vsnprintf(resource, sizeof(resource), resourcef, ap); | |
473 | va_end(ap); | |
474 | ||
475 | if (bytes >= sizeof(resource)) | |
476 | { | |
477 | *uri = '\0'; | |
478 | return (HTTP_URI_STATUS_OVERFLOW); | |
479 | } | |
480 | else | |
481 | return (httpAssembleURI(encoding, uri, urilen, scheme, username, host, | |
482 | port, resource)); | |
483 | } | |
484 | ||
485 | ||
486 | /* | |
487 | * 'httpAssembleUUID()' - Assemble a name-based UUID URN conforming to RFC 4122. | |
488 | * | |
489 | * This function creates a unique 128-bit identifying number using the server | |
490 | * name, port number, random data, and optionally an object name and/or object | |
491 | * number. The result is formatted as a UUID URN as defined in RFC 4122. | |
492 | * | |
493 | * The buffer needs to be at least 46 bytes in size. | |
494 | * | |
495 | * @since CUPS 1.7/OS X 10.9@ | |
496 | */ | |
497 | ||
498 | char * /* I - UUID string */ | |
499 | httpAssembleUUID(const char *server, /* I - Server name */ | |
500 | int port, /* I - Port number */ | |
501 | const char *name, /* I - Object name or NULL */ | |
502 | int number, /* I - Object number or 0 */ | |
503 | char *buffer, /* I - String buffer */ | |
504 | size_t bufsize) /* I - Size of buffer */ | |
505 | { | |
506 | char data[1024]; /* Source string for MD5 */ | |
507 | _cups_md5_state_t md5state; /* MD5 state */ | |
508 | unsigned char md5sum[16]; /* MD5 digest/sum */ | |
509 | ||
510 | ||
511 | /* | |
512 | * Build a version 3 UUID conforming to RFC 4122. | |
513 | * | |
514 | * Start with the MD5 sum of the server, port, object name and | |
515 | * number, and some random data on the end. | |
516 | */ | |
517 | ||
518 | snprintf(data, sizeof(data), "%s:%d:%s:%d:%04x:%04x", server, | |
519 | port, name ? name : server, number, | |
520 | (unsigned)CUPS_RAND() & 0xffff, (unsigned)CUPS_RAND() & 0xffff); | |
521 | ||
522 | _cupsMD5Init(&md5state); | |
523 | _cupsMD5Append(&md5state, (unsigned char *)data, strlen(data)); | |
524 | _cupsMD5Finish(&md5state, md5sum); | |
525 | ||
526 | /* | |
527 | * Generate the UUID from the MD5... | |
528 | */ | |
529 | ||
530 | snprintf(buffer, bufsize, | |
531 | "urn:uuid:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-" | |
532 | "%02x%02x%02x%02x%02x%02x", | |
533 | md5sum[0], md5sum[1], md5sum[2], md5sum[3], md5sum[4], md5sum[5], | |
534 | (md5sum[6] & 15) | 0x30, md5sum[7], (md5sum[8] & 0x3f) | 0x40, | |
535 | md5sum[9], md5sum[10], md5sum[11], md5sum[12], md5sum[13], | |
536 | md5sum[14], md5sum[15]); | |
537 | ||
538 | return (buffer); | |
539 | } | |
540 | ||
541 | ||
542 | /* | |
543 | * 'httpDecode64()' - Base64-decode a string. | |
544 | * | |
545 | * This function is deprecated. Use the httpDecode64_2() function instead | |
546 | * which provides buffer length arguments. | |
547 | * | |
548 | * @deprecated@ | |
549 | */ | |
550 | ||
551 | char * /* O - Decoded string */ | |
552 | httpDecode64(char *out, /* I - String to write to */ | |
553 | const char *in) /* I - String to read from */ | |
554 | { | |
555 | int outlen; /* Output buffer length */ | |
556 | ||
557 | ||
558 | /* | |
559 | * Use the old maximum buffer size for binary compatibility... | |
560 | */ | |
561 | ||
562 | outlen = 512; | |
563 | ||
564 | return (httpDecode64_2(out, &outlen, in)); | |
565 | } | |
566 | ||
567 | ||
568 | /* | |
569 | * 'httpDecode64_2()' - Base64-decode a string. | |
570 | * | |
571 | * @since CUPS 1.1.21/OS X 10.4@ | |
572 | */ | |
573 | ||
574 | char * /* O - Decoded string */ | |
575 | httpDecode64_2(char *out, /* I - String to write to */ | |
576 | int *outlen, /* IO - Size of output string */ | |
577 | const char *in) /* I - String to read from */ | |
578 | { | |
579 | int pos, /* Bit position */ | |
580 | base64; /* Value of this character */ | |
581 | char *outptr, /* Output pointer */ | |
582 | *outend; /* End of output buffer */ | |
583 | ||
584 | ||
585 | /* | |
586 | * Range check input... | |
587 | */ | |
588 | ||
589 | if (!out || !outlen || *outlen < 1 || !in) | |
590 | return (NULL); | |
591 | ||
592 | if (!*in) | |
593 | { | |
594 | *out = '\0'; | |
595 | *outlen = 0; | |
596 | ||
597 | return (out); | |
598 | } | |
599 | ||
600 | /* | |
601 | * Convert from base-64 to bytes... | |
602 | */ | |
603 | ||
604 | for (outptr = out, outend = out + *outlen - 1, pos = 0; *in != '\0'; in ++) | |
605 | { | |
606 | /* | |
607 | * Decode this character into a number from 0 to 63... | |
608 | */ | |
609 | ||
610 | if (*in >= 'A' && *in <= 'Z') | |
611 | base64 = *in - 'A'; | |
612 | else if (*in >= 'a' && *in <= 'z') | |
613 | base64 = *in - 'a' + 26; | |
614 | else if (*in >= '0' && *in <= '9') | |
615 | base64 = *in - '0' + 52; | |
616 | else if (*in == '+') | |
617 | base64 = 62; | |
618 | else if (*in == '/') | |
619 | base64 = 63; | |
620 | else if (*in == '=') | |
621 | break; | |
622 | else | |
623 | continue; | |
624 | ||
625 | /* | |
626 | * Store the result in the appropriate chars... | |
627 | */ | |
628 | ||
629 | switch (pos) | |
630 | { | |
631 | case 0 : | |
632 | if (outptr < outend) | |
633 | *outptr = base64 << 2; | |
634 | pos ++; | |
635 | break; | |
636 | case 1 : | |
637 | if (outptr < outend) | |
638 | *outptr++ |= (base64 >> 4) & 3; | |
639 | if (outptr < outend) | |
640 | *outptr = (base64 << 4) & 255; | |
641 | pos ++; | |
642 | break; | |
643 | case 2 : | |
644 | if (outptr < outend) | |
645 | *outptr++ |= (base64 >> 2) & 15; | |
646 | if (outptr < outend) | |
647 | *outptr = (base64 << 6) & 255; | |
648 | pos ++; | |
649 | break; | |
650 | case 3 : | |
651 | if (outptr < outend) | |
652 | *outptr++ |= base64; | |
653 | pos = 0; | |
654 | break; | |
655 | } | |
656 | } | |
657 | ||
658 | *outptr = '\0'; | |
659 | ||
660 | /* | |
661 | * Return the decoded string and size... | |
662 | */ | |
663 | ||
664 | *outlen = (int)(outptr - out); | |
665 | ||
666 | return (out); | |
667 | } | |
668 | ||
669 | ||
670 | /* | |
671 | * 'httpEncode64()' - Base64-encode a string. | |
672 | * | |
673 | * This function is deprecated. Use the httpEncode64_2() function instead | |
674 | * which provides buffer length arguments. | |
675 | * | |
676 | * @deprecated@ | |
677 | */ | |
678 | ||
679 | char * /* O - Encoded string */ | |
680 | httpEncode64(char *out, /* I - String to write to */ | |
681 | const char *in) /* I - String to read from */ | |
682 | { | |
683 | return (httpEncode64_2(out, 512, in, (int)strlen(in))); | |
684 | } | |
685 | ||
686 | ||
687 | /* | |
688 | * 'httpEncode64_2()' - Base64-encode a string. | |
689 | * | |
690 | * @since CUPS 1.1.21/OS X 10.4@ | |
691 | */ | |
692 | ||
693 | char * /* O - Encoded string */ | |
694 | httpEncode64_2(char *out, /* I - String to write to */ | |
695 | int outlen, /* I - Size of output string */ | |
696 | const char *in, /* I - String to read from */ | |
697 | int inlen) /* I - Size of input string */ | |
698 | { | |
699 | char *outptr, /* Output pointer */ | |
700 | *outend; /* End of output buffer */ | |
701 | static const char base64[] = /* Base64 characters... */ | |
702 | { | |
703 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
704 | "abcdefghijklmnopqrstuvwxyz" | |
705 | "0123456789" | |
706 | "+/" | |
707 | }; | |
708 | ||
709 | ||
710 | /* | |
711 | * Range check input... | |
712 | */ | |
713 | ||
714 | if (!out || outlen < 1 || !in) | |
715 | return (NULL); | |
716 | ||
717 | /* | |
718 | * Convert bytes to base-64... | |
719 | */ | |
720 | ||
721 | for (outptr = out, outend = out + outlen - 1; inlen > 0; in ++, inlen --) | |
722 | { | |
723 | /* | |
724 | * Encode the up to 3 characters as 4 Base64 numbers... | |
725 | */ | |
726 | ||
727 | if (outptr < outend) | |
728 | *outptr ++ = base64[(in[0] & 255) >> 2]; | |
729 | ||
730 | if (outptr < outend) | |
731 | { | |
732 | if (inlen > 1) | |
733 | *outptr ++ = base64[(((in[0] & 255) << 4) | ((in[1] & 255) >> 4)) & 63]; | |
734 | else | |
735 | *outptr ++ = base64[((in[0] & 255) << 4) & 63]; | |
736 | } | |
737 | ||
738 | in ++; | |
739 | inlen --; | |
740 | if (inlen <= 0) | |
741 | { | |
742 | if (outptr < outend) | |
743 | *outptr ++ = '='; | |
744 | if (outptr < outend) | |
745 | *outptr ++ = '='; | |
746 | break; | |
747 | } | |
748 | ||
749 | if (outptr < outend) | |
750 | { | |
751 | if (inlen > 1) | |
752 | *outptr ++ = base64[(((in[0] & 255) << 2) | ((in[1] & 255) >> 6)) & 63]; | |
753 | else | |
754 | *outptr ++ = base64[((in[0] & 255) << 2) & 63]; | |
755 | } | |
756 | ||
757 | in ++; | |
758 | inlen --; | |
759 | if (inlen <= 0) | |
760 | { | |
761 | if (outptr < outend) | |
762 | *outptr ++ = '='; | |
763 | break; | |
764 | } | |
765 | ||
766 | if (outptr < outend) | |
767 | *outptr ++ = base64[in[0] & 63]; | |
768 | } | |
769 | ||
770 | *outptr = '\0'; | |
771 | ||
772 | /* | |
773 | * Return the encoded string... | |
774 | */ | |
775 | ||
776 | return (out); | |
777 | } | |
778 | ||
779 | ||
780 | /* | |
781 | * 'httpGetDateString()' - Get a formatted date/time string from a time value. | |
782 | * | |
783 | * @deprecated@ | |
784 | */ | |
785 | ||
786 | const char * /* O - Date/time string */ | |
787 | httpGetDateString(time_t t) /* I - UNIX time */ | |
788 | { | |
789 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
790 | ||
791 | ||
792 | return (httpGetDateString2(t, cg->http_date, sizeof(cg->http_date))); | |
793 | } | |
794 | ||
795 | ||
796 | /* | |
797 | * 'httpGetDateString2()' - Get a formatted date/time string from a time value. | |
798 | * | |
799 | * @since CUPS 1.2/OS X 10.5@ | |
800 | */ | |
801 | ||
802 | const char * /* O - Date/time string */ | |
803 | httpGetDateString2(time_t t, /* I - UNIX time */ | |
804 | char *s, /* I - String buffer */ | |
805 | int slen) /* I - Size of string buffer */ | |
806 | { | |
807 | struct tm *tdate; /* UNIX date/time data */ | |
808 | ||
809 | ||
810 | tdate = gmtime(&t); | |
811 | if (tdate) | |
812 | snprintf(s, slen, "%s, %02d %s %d %02d:%02d:%02d GMT", | |
813 | http_days[tdate->tm_wday], tdate->tm_mday, | |
814 | http_months[tdate->tm_mon], tdate->tm_year + 1900, | |
815 | tdate->tm_hour, tdate->tm_min, tdate->tm_sec); | |
816 | else | |
817 | s[0] = '\0'; | |
818 | ||
819 | return (s); | |
820 | } | |
821 | ||
822 | ||
823 | /* | |
824 | * 'httpGetDateTime()' - Get a time value from a formatted date/time string. | |
825 | */ | |
826 | ||
827 | time_t /* O - UNIX time */ | |
828 | httpGetDateTime(const char *s) /* I - Date/time string */ | |
829 | { | |
830 | int i; /* Looping var */ | |
831 | char mon[16]; /* Abbreviated month name */ | |
832 | int day, year; /* Day of month and year */ | |
833 | int hour, min, sec; /* Time */ | |
834 | int days; /* Number of days since 1970 */ | |
835 | static const int normal_days[] = /* Days to a month, normal years */ | |
836 | { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; | |
837 | static const int leap_days[] = /* Days to a month, leap years */ | |
838 | { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }; | |
839 | ||
840 | ||
841 | DEBUG_printf(("2httpGetDateTime(s=\"%s\")", s)); | |
842 | ||
843 | /* | |
844 | * Extract the date and time from the formatted string... | |
845 | */ | |
846 | ||
847 | if (sscanf(s, "%*s%d%15s%d%d:%d:%d", &day, mon, &year, &hour, &min, &sec) < 6) | |
848 | return (0); | |
849 | ||
850 | DEBUG_printf(("4httpGetDateTime: day=%d, mon=\"%s\", year=%d, hour=%d, " | |
851 | "min=%d, sec=%d", day, mon, year, hour, min, sec)); | |
852 | ||
853 | /* | |
854 | * Convert the month name to a number from 0 to 11. | |
855 | */ | |
856 | ||
857 | for (i = 0; i < 12; i ++) | |
858 | if (!_cups_strcasecmp(mon, http_months[i])) | |
859 | break; | |
860 | ||
861 | if (i >= 12) | |
862 | return (0); | |
863 | ||
864 | DEBUG_printf(("4httpGetDateTime: i=%d", i)); | |
865 | ||
866 | /* | |
867 | * Now convert the date and time to a UNIX time value in seconds since | |
868 | * 1970. We can't use mktime() since the timezone may not be UTC but | |
869 | * the date/time string *is* UTC. | |
870 | */ | |
871 | ||
872 | if ((year & 3) == 0 && ((year % 100) != 0 || (year % 400) == 0)) | |
873 | days = leap_days[i] + day - 1; | |
874 | else | |
875 | days = normal_days[i] + day - 1; | |
876 | ||
877 | DEBUG_printf(("4httpGetDateTime: days=%d", days)); | |
878 | ||
879 | days += (year - 1970) * 365 + /* 365 days per year (normally) */ | |
880 | ((year - 1) / 4 - 492) - /* + leap days */ | |
881 | ((year - 1) / 100 - 19) + /* - 100 year days */ | |
882 | ((year - 1) / 400 - 4); /* + 400 year days */ | |
883 | ||
884 | DEBUG_printf(("4httpGetDateTime: days=%d\n", days)); | |
885 | ||
886 | return (days * 86400 + hour * 3600 + min * 60 + sec); | |
887 | } | |
888 | ||
889 | ||
890 | /* | |
891 | * 'httpSeparate()' - Separate a Universal Resource Identifier into its | |
892 | * components. | |
893 | * | |
894 | * This function is deprecated; use the httpSeparateURI() function instead. | |
895 | * | |
896 | * @deprecated@ | |
897 | */ | |
898 | ||
899 | void | |
900 | httpSeparate(const char *uri, /* I - Universal Resource Identifier */ | |
901 | char *scheme, /* O - Scheme [32] (http, https, etc.) */ | |
902 | char *username, /* O - Username [1024] */ | |
903 | char *host, /* O - Hostname [1024] */ | |
904 | int *port, /* O - Port number to use */ | |
905 | char *resource) /* O - Resource/filename [1024] */ | |
906 | { | |
907 | httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, 32, username, | |
908 | HTTP_MAX_URI, host, HTTP_MAX_URI, port, resource, | |
909 | HTTP_MAX_URI); | |
910 | } | |
911 | ||
912 | ||
913 | /* | |
914 | * 'httpSeparate2()' - Separate a Universal Resource Identifier into its | |
915 | * components. | |
916 | * | |
917 | * This function is deprecated; use the httpSeparateURI() function instead. | |
918 | * | |
919 | * @since CUPS 1.1.21/OS X 10.4@ | |
920 | * @deprecated@ | |
921 | */ | |
922 | ||
923 | void | |
924 | httpSeparate2(const char *uri, /* I - Universal Resource Identifier */ | |
925 | char *scheme, /* O - Scheme (http, https, etc.) */ | |
926 | int schemelen, /* I - Size of scheme buffer */ | |
927 | char *username, /* O - Username */ | |
928 | int usernamelen, /* I - Size of username buffer */ | |
929 | char *host, /* O - Hostname */ | |
930 | int hostlen, /* I - Size of hostname buffer */ | |
931 | int *port, /* O - Port number to use */ | |
932 | char *resource, /* O - Resource/filename */ | |
933 | int resourcelen) /* I - Size of resource buffer */ | |
934 | { | |
935 | httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, schemelen, username, | |
936 | usernamelen, host, hostlen, port, resource, resourcelen); | |
937 | } | |
938 | ||
939 | ||
940 | /* | |
941 | * 'httpSeparateURI()' - Separate a Universal Resource Identifier into its | |
942 | * components. | |
943 | * | |
944 | * @since CUPS 1.2/OS X 10.5@ | |
945 | */ | |
946 | ||
947 | http_uri_status_t /* O - Result of separation */ | |
948 | httpSeparateURI( | |
949 | http_uri_coding_t decoding, /* I - Decoding flags */ | |
950 | const char *uri, /* I - Universal Resource Identifier */ | |
951 | char *scheme, /* O - Scheme (http, https, etc.) */ | |
952 | int schemelen, /* I - Size of scheme buffer */ | |
953 | char *username, /* O - Username */ | |
954 | int usernamelen, /* I - Size of username buffer */ | |
955 | char *host, /* O - Hostname */ | |
956 | int hostlen, /* I - Size of hostname buffer */ | |
957 | int *port, /* O - Port number to use */ | |
958 | char *resource, /* O - Resource/filename */ | |
959 | int resourcelen) /* I - Size of resource buffer */ | |
960 | { | |
961 | char *ptr, /* Pointer into string... */ | |
962 | *end; /* End of string */ | |
963 | const char *sep; /* Separator character */ | |
964 | http_uri_status_t status; /* Result of separation */ | |
965 | ||
966 | ||
967 | /* | |
968 | * Initialize everything to blank... | |
969 | */ | |
970 | ||
971 | if (scheme && schemelen > 0) | |
972 | *scheme = '\0'; | |
973 | ||
974 | if (username && usernamelen > 0) | |
975 | *username = '\0'; | |
976 | ||
977 | if (host && hostlen > 0) | |
978 | *host = '\0'; | |
979 | ||
980 | if (port) | |
981 | *port = 0; | |
982 | ||
983 | if (resource && resourcelen > 0) | |
984 | *resource = '\0'; | |
985 | ||
986 | /* | |
987 | * Range check input... | |
988 | */ | |
989 | ||
990 | if (!uri || !port || !scheme || schemelen <= 0 || !username || | |
991 | usernamelen <= 0 || !host || hostlen <= 0 || !resource || | |
992 | resourcelen <= 0) | |
993 | return (HTTP_URI_STATUS_BAD_ARGUMENTS); | |
994 | ||
995 | if (!*uri) | |
996 | return (HTTP_URI_STATUS_BAD_URI); | |
997 | ||
998 | /* | |
999 | * Grab the scheme portion of the URI... | |
1000 | */ | |
1001 | ||
1002 | status = HTTP_URI_STATUS_OK; | |
1003 | ||
1004 | if (!strncmp(uri, "//", 2)) | |
1005 | { | |
1006 | /* | |
1007 | * Workaround for HP IPP client bug... | |
1008 | */ | |
1009 | ||
1010 | strlcpy(scheme, "ipp", schemelen); | |
1011 | status = HTTP_URI_STATUS_MISSING_SCHEME; | |
1012 | } | |
1013 | else if (*uri == '/') | |
1014 | { | |
1015 | /* | |
1016 | * Filename... | |
1017 | */ | |
1018 | ||
1019 | strlcpy(scheme, "file", schemelen); | |
1020 | status = HTTP_URI_STATUS_MISSING_SCHEME; | |
1021 | } | |
1022 | else | |
1023 | { | |
1024 | /* | |
1025 | * Standard URI with scheme... | |
1026 | */ | |
1027 | ||
1028 | for (ptr = scheme, end = scheme + schemelen - 1; | |
1029 | *uri && *uri != ':' && ptr < end;) | |
1030 | if (strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
1031 | "abcdefghijklmnopqrstuvwxyz" | |
1032 | "0123456789-+.", *uri) != NULL) | |
1033 | *ptr++ = *uri++; | |
1034 | else | |
1035 | break; | |
1036 | ||
1037 | *ptr = '\0'; | |
1038 | ||
1039 | if (*uri != ':') | |
1040 | { | |
1041 | *scheme = '\0'; | |
1042 | return (HTTP_URI_STATUS_BAD_SCHEME); | |
1043 | } | |
1044 | ||
1045 | uri ++; | |
1046 | } | |
1047 | ||
1048 | /* | |
1049 | * Set the default port number... | |
1050 | */ | |
1051 | ||
1052 | if (!strcmp(scheme, "http")) | |
1053 | *port = 80; | |
1054 | else if (!strcmp(scheme, "https")) | |
1055 | *port = 443; | |
1056 | else if (!strcmp(scheme, "ipp") || !strcmp(scheme, "ipps")) | |
1057 | *port = 631; | |
1058 | else if (!_cups_strcasecmp(scheme, "lpd")) | |
1059 | *port = 515; | |
1060 | else if (!strcmp(scheme, "socket")) /* Not yet registered with IANA... */ | |
1061 | *port = 9100; | |
1062 | else if (strcmp(scheme, "file") && strcmp(scheme, "mailto")) | |
1063 | status = HTTP_URI_STATUS_UNKNOWN_SCHEME; | |
1064 | ||
1065 | /* | |
1066 | * Now see if we have a hostname... | |
1067 | */ | |
1068 | ||
1069 | if (!strncmp(uri, "//", 2)) | |
1070 | { | |
1071 | /* | |
1072 | * Yes, extract it... | |
1073 | */ | |
1074 | ||
1075 | uri += 2; | |
1076 | ||
1077 | /* | |
1078 | * Grab the username, if any... | |
1079 | */ | |
1080 | ||
1081 | if ((sep = strpbrk(uri, "@/")) != NULL && *sep == '@') | |
1082 | { | |
1083 | /* | |
1084 | * Get a username:password combo... | |
1085 | */ | |
1086 | ||
1087 | uri = http_copy_decode(username, uri, usernamelen, "@", | |
1088 | decoding & HTTP_URI_CODING_USERNAME); | |
1089 | ||
1090 | if (!uri) | |
1091 | { | |
1092 | *username = '\0'; | |
1093 | return (HTTP_URI_STATUS_BAD_USERNAME); | |
1094 | } | |
1095 | ||
1096 | uri ++; | |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * Then the hostname/IP address... | |
1101 | */ | |
1102 | ||
1103 | if (*uri == '[') | |
1104 | { | |
1105 | /* | |
1106 | * Grab IPv6 address... | |
1107 | */ | |
1108 | ||
1109 | uri ++; | |
1110 | if (*uri == 'v') | |
1111 | { | |
1112 | /* | |
1113 | * Skip IPvFuture ("vXXXX.") prefix... | |
1114 | */ | |
1115 | ||
1116 | uri ++; | |
1117 | ||
1118 | while (isxdigit(*uri & 255)) | |
1119 | uri ++; | |
1120 | ||
1121 | if (*uri != '.') | |
1122 | { | |
1123 | *host = '\0'; | |
1124 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1125 | } | |
1126 | ||
1127 | uri ++; | |
1128 | } | |
1129 | ||
1130 | uri = http_copy_decode(host, uri, hostlen, "]", | |
1131 | decoding & HTTP_URI_CODING_HOSTNAME); | |
1132 | ||
1133 | if (!uri) | |
1134 | { | |
1135 | *host = '\0'; | |
1136 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * Validate value... | |
1141 | */ | |
1142 | ||
1143 | if (*uri != ']') | |
1144 | { | |
1145 | *host = '\0'; | |
1146 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1147 | } | |
1148 | ||
1149 | uri ++; | |
1150 | ||
1151 | for (ptr = host; *ptr; ptr ++) | |
1152 | if (*ptr == '+') | |
1153 | { | |
1154 | /* | |
1155 | * Convert zone separator to % and stop here... | |
1156 | */ | |
1157 | ||
1158 | *ptr = '%'; | |
1159 | break; | |
1160 | } | |
1161 | else if (*ptr == '%') | |
1162 | { | |
1163 | /* | |
1164 | * Stop at zone separator (RFC 6874) | |
1165 | */ | |
1166 | ||
1167 | break; | |
1168 | } | |
1169 | else if (*ptr != ':' && *ptr != '.' && !isxdigit(*ptr & 255)) | |
1170 | { | |
1171 | *host = '\0'; | |
1172 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1173 | } | |
1174 | } | |
1175 | else | |
1176 | { | |
1177 | /* | |
1178 | * Validate the hostname or IPv4 address first... | |
1179 | */ | |
1180 | ||
1181 | for (ptr = (char *)uri; *ptr; ptr ++) | |
1182 | if (strchr(":?/", *ptr)) | |
1183 | break; | |
1184 | else if (!strchr("abcdefghijklmnopqrstuvwxyz" /* unreserved */ | |
1185 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" /* unreserved */ | |
1186 | "0123456789" /* unreserved */ | |
1187 | "-._~" /* unreserved */ | |
1188 | "%" /* pct-encoded */ | |
1189 | "!$&'()*+,;=" /* sub-delims */ | |
1190 | "\\", *ptr)) /* SMB domain */ | |
1191 | { | |
1192 | *host = '\0'; | |
1193 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1194 | } | |
1195 | ||
1196 | /* | |
1197 | * Then copy the hostname or IPv4 address to the buffer... | |
1198 | */ | |
1199 | ||
1200 | uri = http_copy_decode(host, uri, hostlen, ":?/", | |
1201 | decoding & HTTP_URI_CODING_HOSTNAME); | |
1202 | ||
1203 | if (!uri) | |
1204 | { | |
1205 | *host = '\0'; | |
1206 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* | |
1211 | * Validate hostname for file scheme - only empty and localhost are | |
1212 | * acceptable. | |
1213 | */ | |
1214 | ||
1215 | if (!strcmp(scheme, "file") && strcmp(host, "localhost") && host[0]) | |
1216 | { | |
1217 | *host = '\0'; | |
1218 | return (HTTP_URI_STATUS_BAD_HOSTNAME); | |
1219 | } | |
1220 | ||
1221 | /* | |
1222 | * See if we have a port number... | |
1223 | */ | |
1224 | ||
1225 | if (*uri == ':') | |
1226 | { | |
1227 | /* | |
1228 | * Yes, collect the port number... | |
1229 | */ | |
1230 | ||
1231 | if (!isdigit(uri[1] & 255)) | |
1232 | { | |
1233 | *port = 0; | |
1234 | return (HTTP_URI_STATUS_BAD_PORT); | |
1235 | } | |
1236 | ||
1237 | *port = strtol(uri + 1, (char **)&uri, 10); | |
1238 | ||
1239 | if (*uri != '/' && *uri) | |
1240 | { | |
1241 | *port = 0; | |
1242 | return (HTTP_URI_STATUS_BAD_PORT); | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | /* | |
1248 | * The remaining portion is the resource string... | |
1249 | */ | |
1250 | ||
1251 | if (*uri == '?' || !*uri) | |
1252 | { | |
1253 | /* | |
1254 | * Hostname but no path... | |
1255 | */ | |
1256 | ||
1257 | status = HTTP_URI_STATUS_MISSING_RESOURCE; | |
1258 | *resource = '/'; | |
1259 | ||
1260 | /* | |
1261 | * Copy any query string... | |
1262 | */ | |
1263 | ||
1264 | if (*uri == '?') | |
1265 | uri = http_copy_decode(resource + 1, uri, resourcelen - 1, NULL, | |
1266 | decoding & HTTP_URI_CODING_QUERY); | |
1267 | else | |
1268 | resource[1] = '\0'; | |
1269 | } | |
1270 | else | |
1271 | { | |
1272 | uri = http_copy_decode(resource, uri, resourcelen, "?", | |
1273 | decoding & HTTP_URI_CODING_RESOURCE); | |
1274 | ||
1275 | if (uri && *uri == '?') | |
1276 | { | |
1277 | /* | |
1278 | * Concatenate any query string... | |
1279 | */ | |
1280 | ||
1281 | char *resptr = resource + strlen(resource); | |
1282 | ||
1283 | uri = http_copy_decode(resptr, uri, | |
1284 | resourcelen - (int)(resptr - resource), NULL, | |
1285 | decoding & HTTP_URI_CODING_QUERY); | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | if (!uri) | |
1290 | { | |
1291 | *resource = '\0'; | |
1292 | return (HTTP_URI_STATUS_BAD_RESOURCE); | |
1293 | } | |
1294 | ||
1295 | /* | |
1296 | * Return the URI separation status... | |
1297 | */ | |
1298 | ||
1299 | return (status); | |
1300 | } | |
1301 | ||
1302 | ||
1303 | /* | |
1304 | * 'httpStateString()' - Return the string describing a HTTP state value. | |
1305 | * | |
1306 | * @since CUPS 2.0@ | |
1307 | */ | |
1308 | ||
1309 | const char * /* O - State string */ | |
1310 | httpStateString(http_state_t state) /* I - HTTP state value */ | |
1311 | { | |
1312 | if (state < HTTP_STATE_ERROR || state > HTTP_STATE_UNKNOWN_VERSION) | |
1313 | return ("HTTP_STATE_???"); | |
1314 | else | |
1315 | return (http_states[state - HTTP_STATE_ERROR]); | |
1316 | } | |
1317 | ||
1318 | ||
1319 | /* | |
1320 | * '_httpStatus()' - Return the localized string describing a HTTP status code. | |
1321 | * | |
1322 | * The returned string is localized using the passed message catalog. | |
1323 | */ | |
1324 | ||
1325 | const char * /* O - Localized status string */ | |
1326 | _httpStatus(cups_lang_t *lang, /* I - Language */ | |
1327 | http_status_t status) /* I - HTTP status code */ | |
1328 | { | |
1329 | const char *s; /* Status string */ | |
1330 | ||
1331 | ||
1332 | switch (status) | |
1333 | { | |
1334 | case HTTP_STATUS_ERROR : | |
1335 | s = strerror(errno); | |
1336 | break; | |
1337 | case HTTP_STATUS_CONTINUE : | |
1338 | s = _("Continue"); | |
1339 | break; | |
1340 | case HTTP_STATUS_SWITCHING_PROTOCOLS : | |
1341 | s = _("Switching Protocols"); | |
1342 | break; | |
1343 | case HTTP_STATUS_OK : | |
1344 | s = _("OK"); | |
1345 | break; | |
1346 | case HTTP_STATUS_CREATED : | |
1347 | s = _("Created"); | |
1348 | break; | |
1349 | case HTTP_STATUS_ACCEPTED : | |
1350 | s = _("Accepted"); | |
1351 | break; | |
1352 | case HTTP_STATUS_NO_CONTENT : | |
1353 | s = _("No Content"); | |
1354 | break; | |
1355 | case HTTP_STATUS_MOVED_PERMANENTLY : | |
1356 | s = _("Moved Permanently"); | |
1357 | break; | |
1358 | case HTTP_STATUS_SEE_OTHER : | |
1359 | s = _("See Other"); | |
1360 | break; | |
1361 | case HTTP_STATUS_NOT_MODIFIED : | |
1362 | s = _("Not Modified"); | |
1363 | break; | |
1364 | case HTTP_STATUS_BAD_REQUEST : | |
1365 | s = _("Bad Request"); | |
1366 | break; | |
1367 | case HTTP_STATUS_UNAUTHORIZED : | |
1368 | case HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED : | |
1369 | s = _("Unauthorized"); | |
1370 | break; | |
1371 | case HTTP_STATUS_FORBIDDEN : | |
1372 | s = _("Forbidden"); | |
1373 | break; | |
1374 | case HTTP_STATUS_NOT_FOUND : | |
1375 | s = _("Not Found"); | |
1376 | break; | |
1377 | case HTTP_STATUS_REQUEST_TOO_LARGE : | |
1378 | s = _("Request Entity Too Large"); | |
1379 | break; | |
1380 | case HTTP_STATUS_URI_TOO_LONG : | |
1381 | s = _("URI Too Long"); | |
1382 | break; | |
1383 | case HTTP_STATUS_UPGRADE_REQUIRED : | |
1384 | s = _("Upgrade Required"); | |
1385 | break; | |
1386 | case HTTP_STATUS_NOT_IMPLEMENTED : | |
1387 | s = _("Not Implemented"); | |
1388 | break; | |
1389 | case HTTP_STATUS_NOT_SUPPORTED : | |
1390 | s = _("Not Supported"); | |
1391 | break; | |
1392 | case HTTP_STATUS_EXPECTATION_FAILED : | |
1393 | s = _("Expectation Failed"); | |
1394 | break; | |
1395 | case HTTP_STATUS_SERVICE_UNAVAILABLE : | |
1396 | s = _("Service Unavailable"); | |
1397 | break; | |
1398 | case HTTP_STATUS_SERVER_ERROR : | |
1399 | s = _("Internal Server Error"); | |
1400 | break; | |
1401 | case HTTP_STATUS_CUPS_PKI_ERROR : | |
1402 | s = _("SSL/TLS Negotiation Error"); | |
1403 | break; | |
1404 | case HTTP_STATUS_CUPS_WEBIF_DISABLED : | |
1405 | s = _("Web Interface is Disabled"); | |
1406 | break; | |
1407 | ||
1408 | default : | |
1409 | s = _("Unknown"); | |
1410 | break; | |
1411 | } | |
1412 | ||
1413 | return (_cupsLangString(lang, s)); | |
1414 | } | |
1415 | ||
1416 | ||
1417 | /* | |
1418 | * 'httpStatus()' - Return a short string describing a HTTP status code. | |
1419 | * | |
1420 | * The returned string is localized to the current POSIX locale and is based | |
1421 | * on the status strings defined in RFC 2616. | |
1422 | */ | |
1423 | ||
1424 | const char * /* O - Localized status string */ | |
1425 | httpStatus(http_status_t status) /* I - HTTP status code */ | |
1426 | { | |
1427 | _cups_globals_t *cg = _cupsGlobals(); /* Global data */ | |
1428 | ||
1429 | ||
1430 | if (!cg->lang_default) | |
1431 | cg->lang_default = cupsLangDefault(); | |
1432 | ||
1433 | return (_httpStatus(cg->lang_default, status)); | |
1434 | } | |
1435 | ||
1436 | ||
1437 | #ifndef HAVE_HSTRERROR | |
1438 | /* | |
1439 | * '_cups_hstrerror()' - hstrerror() emulation function for Solaris and others. | |
1440 | */ | |
1441 | ||
1442 | const char * /* O - Error string */ | |
1443 | _cups_hstrerror(int error) /* I - Error number */ | |
1444 | { | |
1445 | static const char * const errors[] = /* Error strings */ | |
1446 | { | |
1447 | "OK", | |
1448 | "Host not found.", | |
1449 | "Try again.", | |
1450 | "Unrecoverable lookup error.", | |
1451 | "No data associated with name." | |
1452 | }; | |
1453 | ||
1454 | ||
1455 | if (error < 0 || error > 4) | |
1456 | return ("Unknown hostname lookup error."); | |
1457 | else | |
1458 | return (errors[error]); | |
1459 | } | |
1460 | #endif /* !HAVE_HSTRERROR */ | |
1461 | ||
1462 | ||
1463 | /* | |
1464 | * '_httpDecodeURI()' - Percent-decode a HTTP request URI. | |
1465 | */ | |
1466 | ||
1467 | char * /* O - Decoded URI or NULL on error */ | |
1468 | _httpDecodeURI(char *dst, /* I - Destination buffer */ | |
1469 | const char *src, /* I - Source URI */ | |
1470 | size_t dstsize) /* I - Size of destination buffer */ | |
1471 | { | |
1472 | if (http_copy_decode(dst, src, (int)dstsize, NULL, 1)) | |
1473 | return (dst); | |
1474 | else | |
1475 | return (NULL); | |
1476 | } | |
1477 | ||
1478 | ||
1479 | /* | |
1480 | * '_httpEncodeURI()' - Percent-encode a HTTP request URI. | |
1481 | */ | |
1482 | ||
1483 | char * /* O - Encoded URI */ | |
1484 | _httpEncodeURI(char *dst, /* I - Destination buffer */ | |
1485 | const char *src, /* I - Source URI */ | |
1486 | size_t dstsize) /* I - Size of destination buffer */ | |
1487 | { | |
1488 | http_copy_encode(dst, src, dst + dstsize - 1, NULL, NULL, 1); | |
1489 | return (dst); | |
1490 | } | |
1491 | ||
1492 | ||
1493 | /* | |
1494 | * '_httpResolveURI()' - Resolve a DNS-SD URI. | |
1495 | */ | |
1496 | ||
1497 | const char * /* O - Resolved URI */ | |
1498 | _httpResolveURI( | |
1499 | const char *uri, /* I - DNS-SD URI */ | |
1500 | char *resolved_uri, /* I - Buffer for resolved URI */ | |
1501 | size_t resolved_size, /* I - Size of URI buffer */ | |
1502 | int options, /* I - Resolve options */ | |
1503 | int (*cb)(void *context), /* I - Continue callback function */ | |
1504 | void *context) /* I - Context pointer for callback */ | |
1505 | { | |
1506 | char scheme[32], /* URI components... */ | |
1507 | userpass[256], | |
1508 | hostname[1024], | |
1509 | resource[1024]; | |
1510 | int port; | |
1511 | #ifdef DEBUG | |
1512 | http_uri_status_t status; /* URI decode status */ | |
1513 | #endif /* DEBUG */ | |
1514 | ||
1515 | ||
1516 | DEBUG_printf(("4_httpResolveURI(uri=\"%s\", resolved_uri=%p, " | |
1517 | "resolved_size=" CUPS_LLFMT ")", uri, resolved_uri, | |
1518 | CUPS_LLCAST resolved_size)); | |
1519 | ||
1520 | /* | |
1521 | * Get the device URI... | |
1522 | */ | |
1523 | ||
1524 | #ifdef DEBUG | |
1525 | if ((status = httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, | |
1526 | sizeof(scheme), userpass, sizeof(userpass), | |
1527 | hostname, sizeof(hostname), &port, resource, | |
1528 | sizeof(resource))) < HTTP_URI_STATUS_OK) | |
1529 | #else | |
1530 | if (httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, | |
1531 | sizeof(scheme), userpass, sizeof(userpass), | |
1532 | hostname, sizeof(hostname), &port, resource, | |
1533 | sizeof(resource)) < HTTP_URI_STATUS_OK) | |
1534 | #endif /* DEBUG */ | |
1535 | { | |
1536 | if (options & _HTTP_RESOLVE_STDERR) | |
1537 | _cupsLangPrintFilter(stderr, "ERROR", _("Bad device-uri \"%s\"."), uri); | |
1538 | ||
1539 | DEBUG_printf(("6_httpResolveURI: httpSeparateURI returned %d!", status)); | |
1540 | DEBUG_puts("5_httpResolveURI: Returning NULL"); | |
1541 | return (NULL); | |
1542 | } | |
1543 | ||
1544 | /* | |
1545 | * Resolve it as needed... | |
1546 | */ | |
1547 | ||
1548 | if (strstr(hostname, "._tcp")) | |
1549 | { | |
1550 | #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) | |
1551 | char *regtype, /* Pointer to type in hostname */ | |
1552 | *domain, /* Pointer to domain in hostname */ | |
1553 | *uuid, /* Pointer to UUID in URI */ | |
1554 | *uuidend; /* Pointer to end of UUID in URI */ | |
1555 | _http_uribuf_t uribuf; /* URI buffer */ | |
1556 | int offline = 0; /* offline-report state set? */ | |
1557 | # ifdef HAVE_DNSSD | |
1558 | # ifdef WIN32 | |
1559 | # pragma comment(lib, "dnssd.lib") | |
1560 | # endif /* WIN32 */ | |
1561 | DNSServiceRef ref, /* DNS-SD master service reference */ | |
1562 | domainref, /* DNS-SD service reference for domain */ | |
1563 | localref; /* DNS-SD service reference for .local */ | |
1564 | int domainsent = 0; /* Send the domain resolve? */ | |
1565 | # ifdef HAVE_POLL | |
1566 | struct pollfd polldata; /* Polling data */ | |
1567 | # else /* select() */ | |
1568 | fd_set input_set; /* Input set for select() */ | |
1569 | struct timeval stimeout; /* Timeout value for select() */ | |
1570 | # endif /* HAVE_POLL */ | |
1571 | # elif defined(HAVE_AVAHI) | |
1572 | AvahiClient *client; /* Client information */ | |
1573 | int error; /* Status */ | |
1574 | # endif /* HAVE_DNSSD */ | |
1575 | ||
1576 | if (options & _HTTP_RESOLVE_STDERR) | |
1577 | fprintf(stderr, "DEBUG: Resolving \"%s\"...\n", hostname); | |
1578 | ||
1579 | /* | |
1580 | * Separate the hostname into service name, registration type, and domain... | |
1581 | */ | |
1582 | ||
1583 | for (regtype = strstr(hostname, "._tcp") - 2; | |
1584 | regtype > hostname; | |
1585 | regtype --) | |
1586 | if (regtype[0] == '.' && regtype[1] == '_') | |
1587 | { | |
1588 | /* | |
1589 | * Found ._servicetype in front of ._tcp... | |
1590 | */ | |
1591 | ||
1592 | *regtype++ = '\0'; | |
1593 | break; | |
1594 | } | |
1595 | ||
1596 | if (regtype <= hostname) | |
1597 | { | |
1598 | DEBUG_puts("5_httpResolveURI: Bad hostname, returning NULL"); | |
1599 | return (NULL); | |
1600 | } | |
1601 | ||
1602 | for (domain = strchr(regtype, '.'); | |
1603 | domain; | |
1604 | domain = strchr(domain + 1, '.')) | |
1605 | if (domain[1] != '_') | |
1606 | break; | |
1607 | ||
1608 | if (domain) | |
1609 | *domain++ = '\0'; | |
1610 | ||
1611 | if ((uuid = strstr(resource, "?uuid=")) != NULL) | |
1612 | { | |
1613 | *uuid = '\0'; | |
1614 | uuid += 6; | |
1615 | if ((uuidend = strchr(uuid, '&')) != NULL) | |
1616 | *uuidend = '\0'; | |
1617 | } | |
1618 | ||
1619 | resolved_uri[0] = '\0'; | |
1620 | ||
1621 | uribuf.buffer = resolved_uri; | |
1622 | uribuf.bufsize = resolved_size; | |
1623 | uribuf.options = options; | |
1624 | uribuf.resource = resource; | |
1625 | uribuf.uuid = uuid; | |
1626 | ||
1627 | DEBUG_printf(("6_httpResolveURI: Resolving hostname=\"%s\", regtype=\"%s\", " | |
1628 | "domain=\"%s\"\n", hostname, regtype, domain)); | |
1629 | if (options & _HTTP_RESOLVE_STDERR) | |
1630 | { | |
1631 | fputs("STATE: +connecting-to-device\n", stderr); | |
1632 | fprintf(stderr, "DEBUG: Resolving \"%s\", regtype=\"%s\", " | |
1633 | "domain=\"local.\"...\n", hostname, regtype); | |
1634 | } | |
1635 | ||
1636 | uri = NULL; | |
1637 | ||
1638 | # ifdef HAVE_DNSSD | |
1639 | if (DNSServiceCreateConnection(&ref) == kDNSServiceErr_NoError) | |
1640 | { | |
1641 | int myinterface = kDNSServiceInterfaceIndexAny; | |
1642 | /* Lookup on any interface */ | |
1643 | ||
1644 | if (!strcmp(scheme, "ippusb")) | |
1645 | myinterface = kDNSServiceInterfaceIndexLocalOnly; | |
1646 | ||
1647 | localref = ref; | |
1648 | if (DNSServiceResolve(&localref, | |
1649 | kDNSServiceFlagsShareConnection, myinterface, | |
1650 | hostname, regtype, "local.", http_resolve_cb, | |
1651 | &uribuf) == kDNSServiceErr_NoError) | |
1652 | { | |
1653 | int fds; /* Number of ready descriptors */ | |
1654 | time_t timeout, /* Poll timeout */ | |
1655 | start_time = time(NULL),/* Start time */ | |
1656 | end_time = start_time + 90; | |
1657 | /* End time */ | |
1658 | ||
1659 | while (time(NULL) < end_time) | |
1660 | { | |
1661 | if (options & _HTTP_RESOLVE_STDERR) | |
1662 | _cupsLangPrintFilter(stderr, "INFO", _("Looking for printer.")); | |
1663 | ||
1664 | if (cb && !(*cb)(context)) | |
1665 | { | |
1666 | DEBUG_puts("5_httpResolveURI: callback returned 0 (stop)"); | |
1667 | break; | |
1668 | } | |
1669 | ||
1670 | /* | |
1671 | * Wakeup every 2 seconds to emit a "looking for printer" message... | |
1672 | */ | |
1673 | ||
1674 | if ((timeout = end_time - time(NULL)) > 2) | |
1675 | timeout = 2; | |
1676 | ||
1677 | # ifdef HAVE_POLL | |
1678 | polldata.fd = DNSServiceRefSockFD(ref); | |
1679 | polldata.events = POLLIN; | |
1680 | ||
1681 | fds = poll(&polldata, 1, 1000 * timeout); | |
1682 | ||
1683 | # else /* select() */ | |
1684 | FD_ZERO(&input_set); | |
1685 | FD_SET(DNSServiceRefSockFD(ref), &input_set); | |
1686 | ||
1687 | # ifdef WIN32 | |
1688 | stimeout.tv_sec = (long)timeout; | |
1689 | # else | |
1690 | stimeout.tv_sec = timeout; | |
1691 | # endif /* WIN32 */ | |
1692 | stimeout.tv_usec = 0; | |
1693 | ||
1694 | fds = select(DNSServiceRefSockFD(ref)+1, &input_set, NULL, NULL, | |
1695 | &stimeout); | |
1696 | # endif /* HAVE_POLL */ | |
1697 | ||
1698 | if (fds < 0) | |
1699 | { | |
1700 | if (errno != EINTR && errno != EAGAIN) | |
1701 | { | |
1702 | DEBUG_printf(("5_httpResolveURI: poll error: %s", strerror(errno))); | |
1703 | break; | |
1704 | } | |
1705 | } | |
1706 | else if (fds == 0) | |
1707 | { | |
1708 | /* | |
1709 | * Wait 2 seconds for a response to the local resolve; if nothing | |
1710 | * comes in, do an additional domain resolution... | |
1711 | */ | |
1712 | ||
1713 | if (domainsent == 0 && domain && _cups_strcasecmp(domain, "local.")) | |
1714 | { | |
1715 | if (options & _HTTP_RESOLVE_STDERR) | |
1716 | fprintf(stderr, | |
1717 | "DEBUG: Resolving \"%s\", regtype=\"%s\", " | |
1718 | "domain=\"%s\"...\n", hostname, regtype, | |
1719 | domain ? domain : ""); | |
1720 | ||
1721 | domainref = ref; | |
1722 | if (DNSServiceResolve(&domainref, | |
1723 | kDNSServiceFlagsShareConnection, | |
1724 | myinterface, hostname, regtype, domain, | |
1725 | http_resolve_cb, | |
1726 | &uribuf) == kDNSServiceErr_NoError) | |
1727 | domainsent = 1; | |
1728 | } | |
1729 | ||
1730 | /* | |
1731 | * If it hasn't resolved within 5 seconds set the offline-report | |
1732 | * printer-state-reason... | |
1733 | */ | |
1734 | ||
1735 | if ((options & _HTTP_RESOLVE_STDERR) && offline == 0 && | |
1736 | time(NULL) > (start_time + 5)) | |
1737 | { | |
1738 | fputs("STATE: +offline-report\n", stderr); | |
1739 | offline = 1; | |
1740 | } | |
1741 | } | |
1742 | else | |
1743 | { | |
1744 | if (DNSServiceProcessResult(ref) == kDNSServiceErr_NoError && | |
1745 | resolved_uri[0]) | |
1746 | { | |
1747 | uri = resolved_uri; | |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | if (domainsent) | |
1754 | DNSServiceRefDeallocate(domainref); | |
1755 | ||
1756 | DNSServiceRefDeallocate(localref); | |
1757 | } | |
1758 | ||
1759 | DNSServiceRefDeallocate(ref); | |
1760 | } | |
1761 | # else /* HAVE_AVAHI */ | |
1762 | if ((uribuf.poll = avahi_simple_poll_new()) != NULL) | |
1763 | { | |
1764 | avahi_simple_poll_set_func(uribuf.poll, http_poll_cb, NULL); | |
1765 | ||
1766 | if ((client = avahi_client_new(avahi_simple_poll_get(uribuf.poll), | |
1767 | 0, http_client_cb, | |
1768 | &uribuf, &error)) != NULL) | |
1769 | { | |
1770 | if (avahi_service_resolver_new(client, AVAHI_IF_UNSPEC, | |
1771 | AVAHI_PROTO_UNSPEC, hostname, | |
1772 | regtype, "local.", AVAHI_PROTO_UNSPEC, 0, | |
1773 | http_resolve_cb, &uribuf) != NULL) | |
1774 | { | |
1775 | time_t start_time = time(NULL), | |
1776 | /* Start time */ | |
1777 | end_time = start_time + 90; | |
1778 | /* End time */ | |
1779 | int pstatus; /* Poll status */ | |
1780 | ||
1781 | pstatus = avahi_simple_poll_iterate(uribuf.poll, 2000); | |
1782 | ||
1783 | if (pstatus == 0 && !resolved_uri[0] && domain && | |
1784 | _cups_strcasecmp(domain, "local.")) | |
1785 | { | |
1786 | /* | |
1787 | * Resolve for .local hasn't returned anything, try the listed | |
1788 | * domain... | |
1789 | */ | |
1790 | ||
1791 | avahi_service_resolver_new(client, AVAHI_IF_UNSPEC, | |
1792 | AVAHI_PROTO_UNSPEC, hostname, | |
1793 | regtype, domain, AVAHI_PROTO_UNSPEC, 0, | |
1794 | http_resolve_cb, &uribuf); | |
1795 | } | |
1796 | ||
1797 | while (!pstatus && !resolved_uri[0] && time(NULL) < end_time) | |
1798 | { | |
1799 | if ((pstatus = avahi_simple_poll_iterate(uribuf.poll, 2000)) != 0) | |
1800 | break; | |
1801 | ||
1802 | /* | |
1803 | * If it hasn't resolved within 5 seconds set the offline-report | |
1804 | * printer-state-reason... | |
1805 | */ | |
1806 | ||
1807 | if ((options & _HTTP_RESOLVE_STDERR) && offline == 0 && | |
1808 | time(NULL) > (start_time + 5)) | |
1809 | { | |
1810 | fputs("STATE: +offline-report\n", stderr); | |
1811 | offline = 1; | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | /* | |
1816 | * Collect the result (if we got one). | |
1817 | */ | |
1818 | ||
1819 | if (resolved_uri[0]) | |
1820 | uri = resolved_uri; | |
1821 | } | |
1822 | ||
1823 | avahi_client_free(client); | |
1824 | } | |
1825 | ||
1826 | avahi_simple_poll_free(uribuf.poll); | |
1827 | } | |
1828 | # endif /* HAVE_DNSSD */ | |
1829 | ||
1830 | if (options & _HTTP_RESOLVE_STDERR) | |
1831 | { | |
1832 | if (uri) | |
1833 | { | |
1834 | fprintf(stderr, "DEBUG: Resolved as \"%s\"...\n", uri); | |
1835 | fputs("STATE: -connecting-to-device,offline-report\n", stderr); | |
1836 | } | |
1837 | else | |
1838 | { | |
1839 | fputs("DEBUG: Unable to resolve URI\n", stderr); | |
1840 | fputs("STATE: -connecting-to-device\n", stderr); | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | #else /* HAVE_DNSSD || HAVE_AVAHI */ | |
1845 | /* | |
1846 | * No DNS-SD support... | |
1847 | */ | |
1848 | ||
1849 | uri = NULL; | |
1850 | #endif /* HAVE_DNSSD || HAVE_AVAHI */ | |
1851 | ||
1852 | if ((options & _HTTP_RESOLVE_STDERR) && !uri) | |
1853 | _cupsLangPrintFilter(stderr, "INFO", _("Unable to find printer.")); | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | /* | |
1858 | * Nothing more to do... | |
1859 | */ | |
1860 | ||
1861 | strlcpy(resolved_uri, uri, resolved_size); | |
1862 | uri = resolved_uri; | |
1863 | } | |
1864 | ||
1865 | DEBUG_printf(("5_httpResolveURI: Returning \"%s\"", uri)); | |
1866 | ||
1867 | return (uri); | |
1868 | } | |
1869 | ||
1870 | ||
1871 | #ifdef HAVE_AVAHI | |
1872 | /* | |
1873 | * 'http_client_cb()' - Client callback for resolving URI. | |
1874 | */ | |
1875 | ||
1876 | static void | |
1877 | http_client_cb( | |
1878 | AvahiClient *client, /* I - Client information */ | |
1879 | AvahiClientState state, /* I - Current state */ | |
1880 | void *context) /* I - Pointer to URI buffer */ | |
1881 | { | |
1882 | DEBUG_printf(("7http_client_cb(client=%p, state=%d, context=%p)", client, | |
1883 | state, context)); | |
1884 | ||
1885 | /* | |
1886 | * If the connection drops, quit. | |
1887 | */ | |
1888 | ||
1889 | if (state == AVAHI_CLIENT_FAILURE) | |
1890 | { | |
1891 | _http_uribuf_t *uribuf = (_http_uribuf_t *)context; | |
1892 | /* URI buffer */ | |
1893 | ||
1894 | avahi_simple_poll_quit(uribuf->poll); | |
1895 | } | |
1896 | } | |
1897 | #endif /* HAVE_AVAHI */ | |
1898 | ||
1899 | ||
1900 | /* | |
1901 | * 'http_copy_decode()' - Copy and decode a URI. | |
1902 | */ | |
1903 | ||
1904 | static const char * /* O - New source pointer or NULL on error */ | |
1905 | http_copy_decode(char *dst, /* O - Destination buffer */ | |
1906 | const char *src, /* I - Source pointer */ | |
1907 | int dstsize, /* I - Destination size */ | |
1908 | const char *term, /* I - Terminating characters */ | |
1909 | int decode) /* I - Decode %-encoded values */ | |
1910 | { | |
1911 | char *ptr, /* Pointer into buffer */ | |
1912 | *end; /* End of buffer */ | |
1913 | int quoted; /* Quoted character */ | |
1914 | ||
1915 | ||
1916 | /* | |
1917 | * Copy the src to the destination until we hit a terminating character | |
1918 | * or the end of the string. | |
1919 | */ | |
1920 | ||
1921 | for (ptr = dst, end = dst + dstsize - 1; | |
1922 | *src && (!term || !strchr(term, *src)); | |
1923 | src ++) | |
1924 | if (ptr < end) | |
1925 | { | |
1926 | if (*src == '%' && decode) | |
1927 | { | |
1928 | if (isxdigit(src[1] & 255) && isxdigit(src[2] & 255)) | |
1929 | { | |
1930 | /* | |
1931 | * Grab a hex-encoded character... | |
1932 | */ | |
1933 | ||
1934 | src ++; | |
1935 | if (isalpha(*src)) | |
1936 | quoted = (tolower(*src) - 'a' + 10) << 4; | |
1937 | else | |
1938 | quoted = (*src - '0') << 4; | |
1939 | ||
1940 | src ++; | |
1941 | if (isalpha(*src)) | |
1942 | quoted |= tolower(*src) - 'a' + 10; | |
1943 | else | |
1944 | quoted |= *src - '0'; | |
1945 | ||
1946 | *ptr++ = quoted; | |
1947 | } | |
1948 | else | |
1949 | { | |
1950 | /* | |
1951 | * Bad hex-encoded character... | |
1952 | */ | |
1953 | ||
1954 | *ptr = '\0'; | |
1955 | return (NULL); | |
1956 | } | |
1957 | } | |
1958 | else if ((*src & 255) <= 0x20 || (*src & 255) >= 0x7f) | |
1959 | { | |
1960 | *ptr = '\0'; | |
1961 | return (NULL); | |
1962 | } | |
1963 | else | |
1964 | *ptr++ = *src; | |
1965 | } | |
1966 | ||
1967 | *ptr = '\0'; | |
1968 | ||
1969 | return (src); | |
1970 | } | |
1971 | ||
1972 | ||
1973 | /* | |
1974 | * 'http_copy_encode()' - Copy and encode a URI. | |
1975 | */ | |
1976 | ||
1977 | static char * /* O - End of current URI */ | |
1978 | http_copy_encode(char *dst, /* O - Destination buffer */ | |
1979 | const char *src, /* I - Source pointer */ | |
1980 | char *dstend, /* I - End of destination buffer */ | |
1981 | const char *reserved, /* I - Extra reserved characters */ | |
1982 | const char *term, /* I - Terminating characters */ | |
1983 | int encode) /* I - %-encode reserved chars? */ | |
1984 | { | |
1985 | static const char hex[] = "0123456789ABCDEF"; | |
1986 | ||
1987 | ||
1988 | while (*src && dst < dstend) | |
1989 | { | |
1990 | if (term && *src == *term) | |
1991 | return (dst); | |
1992 | ||
1993 | if (encode && (*src == '%' || *src <= ' ' || *src & 128 || | |
1994 | (reserved && strchr(reserved, *src)))) | |
1995 | { | |
1996 | /* | |
1997 | * Hex encode reserved characters... | |
1998 | */ | |
1999 | ||
2000 | if ((dst + 2) >= dstend) | |
2001 | break; | |
2002 | ||
2003 | *dst++ = '%'; | |
2004 | *dst++ = hex[(*src >> 4) & 15]; | |
2005 | *dst++ = hex[*src & 15]; | |
2006 | ||
2007 | src ++; | |
2008 | } | |
2009 | else | |
2010 | *dst++ = *src++; | |
2011 | } | |
2012 | ||
2013 | *dst = '\0'; | |
2014 | ||
2015 | if (*src) | |
2016 | return (NULL); | |
2017 | else | |
2018 | return (dst); | |
2019 | } | |
2020 | ||
2021 | ||
2022 | #ifdef HAVE_DNSSD | |
2023 | /* | |
2024 | * 'http_resolve_cb()' - Build a device URI for the given service name. | |
2025 | */ | |
2026 | ||
2027 | static void DNSSD_API | |
2028 | http_resolve_cb( | |
2029 | DNSServiceRef sdRef, /* I - Service reference */ | |
2030 | DNSServiceFlags flags, /* I - Results flags */ | |
2031 | uint32_t interfaceIndex, /* I - Interface number */ | |
2032 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
2033 | const char *fullName, /* I - Full service name */ | |
2034 | const char *hostTarget, /* I - Hostname */ | |
2035 | uint16_t port, /* I - Port number */ | |
2036 | uint16_t txtLen, /* I - Length of TXT record */ | |
2037 | const unsigned char *txtRecord, /* I - TXT record data */ | |
2038 | void *context) /* I - Pointer to URI buffer */ | |
2039 | { | |
2040 | _http_uribuf_t *uribuf = (_http_uribuf_t *)context; | |
2041 | /* URI buffer */ | |
2042 | const char *scheme, /* URI scheme */ | |
2043 | *hostptr, /* Pointer into hostTarget */ | |
2044 | *reskey, /* "rp" or "rfo" */ | |
2045 | *resdefault; /* Default path */ | |
2046 | char resource[257], /* Remote path */ | |
2047 | fqdn[256]; /* FQDN of the .local name */ | |
2048 | const void *value; /* Value from TXT record */ | |
2049 | uint8_t valueLen; /* Length of value */ | |
2050 | ||
2051 | ||
2052 | DEBUG_printf(("7http_resolve_cb(sdRef=%p, flags=%x, interfaceIndex=%u, " | |
2053 | "errorCode=%d, fullName=\"%s\", hostTarget=\"%s\", port=%u, " | |
2054 | "txtLen=%u, txtRecord=%p, context=%p)", sdRef, flags, | |
2055 | interfaceIndex, errorCode, fullName, hostTarget, port, txtLen, | |
2056 | txtRecord, context)); | |
2057 | ||
2058 | /* | |
2059 | * If we have a UUID, compare it... | |
2060 | */ | |
2061 | ||
2062 | if (uribuf->uuid && | |
2063 | (value = TXTRecordGetValuePtr(txtLen, txtRecord, "UUID", | |
2064 | &valueLen)) != NULL) | |
2065 | { | |
2066 | char uuid[256]; /* UUID value */ | |
2067 | ||
2068 | memcpy(uuid, value, valueLen); | |
2069 | uuid[valueLen] = '\0'; | |
2070 | ||
2071 | if (_cups_strcasecmp(uuid, uribuf->uuid)) | |
2072 | { | |
2073 | if (uribuf->options & _HTTP_RESOLVE_STDERR) | |
2074 | fprintf(stderr, "DEBUG: Found UUID %s, looking for %s.", uuid, | |
2075 | uribuf->uuid); | |
2076 | ||
2077 | DEBUG_printf(("7http_resolve_cb: Found UUID %s, looking for %s.", uuid, | |
2078 | uribuf->uuid)); | |
2079 | return; | |
2080 | } | |
2081 | } | |
2082 | ||
2083 | /* | |
2084 | * Figure out the scheme from the full name... | |
2085 | */ | |
2086 | ||
2087 | if (strstr(fullName, "._ipps") || strstr(fullName, "._ipp-tls")) | |
2088 | scheme = "ipps"; | |
2089 | else if (strstr(fullName, "._ipp") || strstr(fullName, "._fax-ipp")) | |
2090 | scheme = "ipp"; | |
2091 | else if (strstr(fullName, "._http.")) | |
2092 | scheme = "http"; | |
2093 | else if (strstr(fullName, "._https.")) | |
2094 | scheme = "https"; | |
2095 | else if (strstr(fullName, "._printer.")) | |
2096 | scheme = "lpd"; | |
2097 | else if (strstr(fullName, "._pdl-datastream.")) | |
2098 | scheme = "socket"; | |
2099 | else | |
2100 | scheme = "riousbprint"; | |
2101 | ||
2102 | /* | |
2103 | * Extract the "remote printer" key from the TXT record... | |
2104 | */ | |
2105 | ||
2106 | if ((uribuf->options & _HTTP_RESOLVE_FAXOUT) && | |
2107 | (!strcmp(scheme, "ipp") || !strcmp(scheme, "ipps")) && | |
2108 | !TXTRecordGetValuePtr(txtLen, txtRecord, "printer-type", &valueLen)) | |
2109 | { | |
2110 | reskey = "rfo"; | |
2111 | resdefault = "/ipp/faxout"; | |
2112 | } | |
2113 | else | |
2114 | { | |
2115 | reskey = "rp"; | |
2116 | resdefault = "/"; | |
2117 | } | |
2118 | ||
2119 | if ((value = TXTRecordGetValuePtr(txtLen, txtRecord, reskey, | |
2120 | &valueLen)) != NULL) | |
2121 | { | |
2122 | if (((char *)value)[0] == '/') | |
2123 | { | |
2124 | /* | |
2125 | * Value (incorrectly) has a leading slash already... | |
2126 | */ | |
2127 | ||
2128 | memcpy(resource, value, valueLen); | |
2129 | resource[valueLen] = '\0'; | |
2130 | } | |
2131 | else | |
2132 | { | |
2133 | /* | |
2134 | * Convert to resource by concatenating with a leading "/"... | |
2135 | */ | |
2136 | ||
2137 | resource[0] = '/'; | |
2138 | memcpy(resource + 1, value, valueLen); | |
2139 | resource[valueLen + 1] = '\0'; | |
2140 | } | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | /* | |
2145 | * Use the default value... | |
2146 | */ | |
2147 | ||
2148 | strlcpy(resource, resdefault, sizeof(resource)); | |
2149 | } | |
2150 | ||
2151 | /* | |
2152 | * Lookup the FQDN if needed... | |
2153 | */ | |
2154 | ||
2155 | if ((uribuf->options & _HTTP_RESOLVE_FQDN) && | |
2156 | (hostptr = hostTarget + strlen(hostTarget) - 7) > hostTarget && | |
2157 | !_cups_strcasecmp(hostptr, ".local.")) | |
2158 | { | |
2159 | /* | |
2160 | * OK, we got a .local name but the caller needs a real domain. Start by | |
2161 | * getting the IP address of the .local name and then do reverse-lookups... | |
2162 | */ | |
2163 | ||
2164 | http_addrlist_t *addrlist, /* List of addresses */ | |
2165 | *addr; /* Current address */ | |
2166 | ||
2167 | DEBUG_printf(("8http_resolve_cb: Looking up \"%s\".", hostTarget)); | |
2168 | ||
2169 | snprintf(fqdn, sizeof(fqdn), "%d", ntohs(port)); | |
2170 | if ((addrlist = httpAddrGetList(hostTarget, AF_UNSPEC, fqdn)) != NULL) | |
2171 | { | |
2172 | for (addr = addrlist; addr; addr = addr->next) | |
2173 | { | |
2174 | int error = getnameinfo(&(addr->addr.addr), | |
2175 | httpAddrLength(&(addr->addr)), | |
2176 | fqdn, sizeof(fqdn), NULL, 0, NI_NAMEREQD); | |
2177 | ||
2178 | if (!error) | |
2179 | { | |
2180 | DEBUG_printf(("8http_resolve_cb: Found \"%s\".", fqdn)); | |
2181 | ||
2182 | if ((hostptr = fqdn + strlen(fqdn) - 6) <= fqdn || | |
2183 | _cups_strcasecmp(hostptr, ".local")) | |
2184 | { | |
2185 | hostTarget = fqdn; | |
2186 | break; | |
2187 | } | |
2188 | } | |
2189 | #ifdef DEBUG | |
2190 | else | |
2191 | DEBUG_printf(("8http_resolve_cb: \"%s\" did not resolve: %d", | |
2192 | httpAddrString(&(addr->addr), fqdn, sizeof(fqdn)), | |
2193 | error)); | |
2194 | #endif /* DEBUG */ | |
2195 | } | |
2196 | ||
2197 | httpAddrFreeList(addrlist); | |
2198 | } | |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * Assemble the final device URI... | |
2203 | */ | |
2204 | ||
2205 | if ((!strcmp(scheme, "ipp") || !strcmp(scheme, "ipps")) && | |
2206 | !strcmp(uribuf->resource, "/cups")) | |
2207 | httpAssembleURIf(HTTP_URI_CODING_ALL, uribuf->buffer, uribuf->bufsize, | |
2208 | scheme, NULL, hostTarget, ntohs(port), "%s?snmp=false", | |
2209 | resource); | |
2210 | else | |
2211 | httpAssembleURI(HTTP_URI_CODING_ALL, uribuf->buffer, uribuf->bufsize, | |
2212 | scheme, NULL, hostTarget, ntohs(port), resource); | |
2213 | ||
2214 | DEBUG_printf(("8http_resolve_cb: Resolved URI is \"%s\"...", uribuf->buffer)); | |
2215 | } | |
2216 | ||
2217 | #elif defined(HAVE_AVAHI) | |
2218 | /* | |
2219 | * 'http_poll_cb()' - Wait for input on the specified file descriptors. | |
2220 | * | |
2221 | * Note: This function is needed because avahi_simple_poll_iterate is broken | |
2222 | * and always uses a timeout of 0 (!) milliseconds. | |
2223 | * (Avahi Ticket #364) | |
2224 | */ | |
2225 | ||
2226 | static int /* O - Number of file descriptors matching */ | |
2227 | http_poll_cb( | |
2228 | struct pollfd *pollfds, /* I - File descriptors */ | |
2229 | unsigned int num_pollfds, /* I - Number of file descriptors */ | |
2230 | int timeout, /* I - Timeout in milliseconds (used) */ | |
2231 | void *context) /* I - User data (unused) */ | |
2232 | { | |
2233 | (void)timeout; | |
2234 | (void)context; | |
2235 | ||
2236 | return (poll(pollfds, num_pollfds, 2000)); | |
2237 | } | |
2238 | ||
2239 | ||
2240 | /* | |
2241 | * 'http_resolve_cb()' - Build a device URI for the given service name. | |
2242 | */ | |
2243 | ||
2244 | static void | |
2245 | http_resolve_cb( | |
2246 | AvahiServiceResolver *resolver, /* I - Resolver (unused) */ | |
2247 | AvahiIfIndex interface, /* I - Interface index (unused) */ | |
2248 | AvahiProtocol protocol, /* I - Network protocol (unused) */ | |
2249 | AvahiResolverEvent event, /* I - Event (found, etc.) */ | |
2250 | const char *name, /* I - Service name */ | |
2251 | const char *type, /* I - Registration type */ | |
2252 | const char *domain, /* I - Domain (unused) */ | |
2253 | const char *hostTarget, /* I - Hostname */ | |
2254 | const AvahiAddress *address, /* I - Address (unused) */ | |
2255 | uint16_t port, /* I - Port number */ | |
2256 | AvahiStringList *txt, /* I - TXT record */ | |
2257 | AvahiLookupResultFlags flags, /* I - Lookup flags (unused) */ | |
2258 | void *context) /* I - Pointer to URI buffer */ | |
2259 | { | |
2260 | _http_uribuf_t *uribuf = (_http_uribuf_t *)context; | |
2261 | /* URI buffer */ | |
2262 | const char *scheme, /* URI scheme */ | |
2263 | *hostptr, /* Pointer into hostTarget */ | |
2264 | *reskey, /* "rp" or "rfo" */ | |
2265 | *resdefault; /* Default path */ | |
2266 | char resource[257], /* Remote path */ | |
2267 | fqdn[256]; /* FQDN of the .local name */ | |
2268 | AvahiStringList *pair; /* Current TXT record key/value pair */ | |
2269 | char *value; /* Value for "rp" key */ | |
2270 | size_t valueLen = 0; /* Length of "rp" key */ | |
2271 | ||
2272 | ||
2273 | DEBUG_printf(("7http_resolve_cb(resolver=%p, " | |
2274 | "interface=%d, protocol=%d, event=%d, name=\"%s\", " | |
2275 | "type=\"%s\", domain=\"%s\", hostTarget=\"%s\", address=%p, " | |
2276 | "port=%d, txt=%p, flags=%d, context=%p)", | |
2277 | resolver, interface, protocol, event, name, type, domain, | |
2278 | hostTarget, address, port, txt, flags, context)); | |
2279 | ||
2280 | if (event != AVAHI_RESOLVER_FOUND) | |
2281 | { | |
2282 | avahi_service_resolver_free(resolver); | |
2283 | avahi_simple_poll_quit(uribuf->poll); | |
2284 | return; | |
2285 | } | |
2286 | ||
2287 | /* | |
2288 | * If we have a UUID, compare it... | |
2289 | */ | |
2290 | ||
2291 | if (uribuf->uuid && (pair = avahi_string_list_find(txt, "UUID")) != NULL) | |
2292 | { | |
2293 | char uuid[256]; /* UUID value */ | |
2294 | ||
2295 | avahi_string_list_get_pair(pair, NULL, &value, &valueLen); | |
2296 | ||
2297 | memcpy(uuid, value, valueLen); | |
2298 | uuid[valueLen] = '\0'; | |
2299 | ||
2300 | if (_cups_strcasecmp(uuid, uribuf->uuid)) | |
2301 | { | |
2302 | if (uribuf->options & _HTTP_RESOLVE_STDERR) | |
2303 | fprintf(stderr, "DEBUG: Found UUID %s, looking for %s.", uuid, | |
2304 | uribuf->uuid); | |
2305 | ||
2306 | DEBUG_printf(("7http_resolve_cb: Found UUID %s, looking for %s.", uuid, | |
2307 | uribuf->uuid)); | |
2308 | return; | |
2309 | } | |
2310 | } | |
2311 | ||
2312 | /* | |
2313 | * Figure out the scheme from the full name... | |
2314 | */ | |
2315 | ||
2316 | if (strstr(type, "_ipp.")) | |
2317 | scheme = "ipp"; | |
2318 | else if (strstr(type, "_printer.")) | |
2319 | scheme = "lpd"; | |
2320 | else if (strstr(type, "_pdl-datastream.")) | |
2321 | scheme = "socket"; | |
2322 | else | |
2323 | scheme = "riousbprint"; | |
2324 | ||
2325 | if (!strncmp(type, "_ipps.", 6) || !strncmp(type, "_ipp-tls.", 9)) | |
2326 | scheme = "ipps"; | |
2327 | else if (!strncmp(type, "_ipp.", 5) || !strncmp(type, "_fax-ipp.", 9)) | |
2328 | scheme = "ipp"; | |
2329 | else if (!strncmp(type, "_http.", 6)) | |
2330 | scheme = "http"; | |
2331 | else if (!strncmp(type, "_https.", 7)) | |
2332 | scheme = "https"; | |
2333 | else if (!strncmp(type, "_printer.", 9)) | |
2334 | scheme = "lpd"; | |
2335 | else if (!strncmp(type, "_pdl-datastream.", 16)) | |
2336 | scheme = "socket"; | |
2337 | else | |
2338 | { | |
2339 | avahi_service_resolver_free(resolver); | |
2340 | avahi_simple_poll_quit(uribuf->poll); | |
2341 | return; | |
2342 | } | |
2343 | ||
2344 | /* | |
2345 | * Extract the remote resource key from the TXT record... | |
2346 | */ | |
2347 | ||
2348 | if ((uribuf->options & _HTTP_RESOLVE_FAXOUT) && | |
2349 | (!strcmp(scheme, "ipp") || !strcmp(scheme, "ipps")) && | |
2350 | !avahi_string_list_find(txt, "printer-type")) | |
2351 | { | |
2352 | reskey = "rfo"; | |
2353 | resdefault = "/ipp/faxout"; | |
2354 | } | |
2355 | else | |
2356 | { | |
2357 | reskey = "rp"; | |
2358 | resdefault = "/"; | |
2359 | } | |
2360 | ||
2361 | if ((pair = avahi_string_list_find(txt, reskey)) != NULL) | |
2362 | { | |
2363 | avahi_string_list_get_pair(pair, NULL, &value, &valueLen); | |
2364 | ||
2365 | if (value[0] == '/') | |
2366 | { | |
2367 | /* | |
2368 | * Value (incorrectly) has a leading slash already... | |
2369 | */ | |
2370 | ||
2371 | memcpy(resource, value, valueLen); | |
2372 | resource[valueLen] = '\0'; | |
2373 | } | |
2374 | else | |
2375 | { | |
2376 | /* | |
2377 | * Convert to resource by concatenating with a leading "/"... | |
2378 | */ | |
2379 | ||
2380 | resource[0] = '/'; | |
2381 | memcpy(resource + 1, value, valueLen); | |
2382 | resource[valueLen + 1] = '\0'; | |
2383 | } | |
2384 | } | |
2385 | else | |
2386 | { | |
2387 | /* | |
2388 | * Use the default value... | |
2389 | */ | |
2390 | ||
2391 | strlcpy(resource, resdefault, sizeof(resource)); | |
2392 | } | |
2393 | ||
2394 | /* | |
2395 | * Lookup the FQDN if needed... | |
2396 | */ | |
2397 | ||
2398 | if ((uribuf->options & _HTTP_RESOLVE_FQDN) && | |
2399 | (hostptr = hostTarget + strlen(hostTarget) - 6) > hostTarget && | |
2400 | !_cups_strcasecmp(hostptr, ".local")) | |
2401 | { | |
2402 | /* | |
2403 | * OK, we got a .local name but the caller needs a real domain. Start by | |
2404 | * getting the IP address of the .local name and then do reverse-lookups... | |
2405 | */ | |
2406 | ||
2407 | http_addrlist_t *addrlist, /* List of addresses */ | |
2408 | *addr; /* Current address */ | |
2409 | ||
2410 | DEBUG_printf(("8http_resolve_cb: Looking up \"%s\".", hostTarget)); | |
2411 | ||
2412 | snprintf(fqdn, sizeof(fqdn), "%d", ntohs(port)); | |
2413 | if ((addrlist = httpAddrGetList(hostTarget, AF_UNSPEC, fqdn)) != NULL) | |
2414 | { | |
2415 | for (addr = addrlist; addr; addr = addr->next) | |
2416 | { | |
2417 | int error = getnameinfo(&(addr->addr.addr), | |
2418 | httpAddrLength(&(addr->addr)), | |
2419 | fqdn, sizeof(fqdn), NULL, 0, NI_NAMEREQD); | |
2420 | ||
2421 | if (!error) | |
2422 | { | |
2423 | DEBUG_printf(("8http_resolve_cb: Found \"%s\".", fqdn)); | |
2424 | ||
2425 | if ((hostptr = fqdn + strlen(fqdn) - 6) <= fqdn || | |
2426 | _cups_strcasecmp(hostptr, ".local")) | |
2427 | { | |
2428 | hostTarget = fqdn; | |
2429 | break; | |
2430 | } | |
2431 | } | |
2432 | #ifdef DEBUG | |
2433 | else | |
2434 | DEBUG_printf(("8http_resolve_cb: \"%s\" did not resolve: %d", | |
2435 | httpAddrString(&(addr->addr), fqdn, sizeof(fqdn)), | |
2436 | error)); | |
2437 | #endif /* DEBUG */ | |
2438 | } | |
2439 | ||
2440 | httpAddrFreeList(addrlist); | |
2441 | } | |
2442 | } | |
2443 | ||
2444 | /* | |
2445 | * Assemble the final device URI using the resolved hostname... | |
2446 | */ | |
2447 | ||
2448 | httpAssembleURI(HTTP_URI_CODING_ALL, uribuf->buffer, uribuf->bufsize, scheme, | |
2449 | NULL, hostTarget, port, resource); | |
2450 | DEBUG_printf(("8http_resolve_cb: Resolved URI is \"%s\".", uribuf->buffer)); | |
2451 | ||
2452 | avahi_simple_poll_quit(uribuf->poll); | |
2453 | } | |
2454 | #endif /* HAVE_DNSSD */ | |
2455 | ||
2456 | ||
2457 | /* | |
2458 | * End of "$Id$". | |
2459 | */ |