]>
Commit | Line | Data |
---|---|---|
ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: http-support.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * HTTP support routines for the Common UNIX Printing System (CUPS) scheduler. | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
b86bc4cf | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 14 | * |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * httpAssembleURI() - Assemble a uniform resource identifier from its | |
20 | * components. | |
21 | * httpAssembleURIf() - Assemble a uniform resource identifier from its | |
22 | * components with a formatted resource. | |
23 | * httpDecode64() - Base64-decode a string. | |
24 | * httpDecode64_2() - Base64-decode a string. | |
25 | * httpEncode64() - Base64-encode a string. | |
26 | * httpEncode64_2() - Base64-encode a string. | |
27 | * httpGetDateString() - Get a formatted date/time string from a time value. | |
28 | * httpGetDateString2() - Get a formatted date/time string from a time value. | |
29 | * httpGetDateTime() - Get a time value from a formatted date/time string. | |
30 | * httpSeparate() - Separate a Universal Resource Identifier into its | |
31 | * components. | |
32 | * httpSeparate2() - Separate a Universal Resource Identifier into its | |
33 | * components. | |
34 | * httpSeparateURI() - Separate a Universal Resource Identifier into its | |
35 | * components. | |
36 | * httpStatus() - Return a short string describing a HTTP status code. | |
37 | * _cups_hstrerror() - hstrerror() emulation function for Solaris and | |
38 | * others... | |
839a51c8 | 39 | * _httpEncodeURI() - Percent-encode a HTTP request URI. |
ef416fc2 | 40 | * http_copy_decode() - Copy and decode a URI. |
41 | * http_copy_encode() - Copy and encode a URI. | |
42 | */ | |
43 | ||
44 | /* | |
45 | * Include necessary headers... | |
46 | */ | |
47 | ||
48 | #include "debug.h" | |
49 | #include "globals.h" | |
50 | #include <stdlib.h> | |
51 | ||
52 | ||
53 | /* | |
54 | * Local globals... | |
55 | */ | |
56 | ||
57 | static const char * const http_days[7] = | |
58 | { | |
0a682745 MS |
59 | "Sun", |
60 | "Mon", | |
ef416fc2 | 61 | "Tue", |
62 | "Wed", | |
63 | "Thu", | |
64 | "Fri", | |
65 | "Sat" | |
66 | }; | |
67 | static const char * const http_months[12] = | |
68 | { | |
69 | "Jan", | |
70 | "Feb", | |
71 | "Mar", | |
72 | "Apr", | |
73 | "May", | |
74 | "Jun", | |
75 | "Jul", | |
76 | "Aug", | |
77 | "Sep", | |
78 | "Oct", | |
79 | "Nov", | |
80 | "Dec" | |
81 | }; | |
82 | ||
83 | ||
84 | /* | |
85 | * Local functions... | |
86 | */ | |
87 | ||
88 | static const char *http_copy_decode(char *dst, const char *src, | |
a4d04587 | 89 | int dstsize, const char *term, |
90 | int decode); | |
ef416fc2 | 91 | static char *http_copy_encode(char *dst, const char *src, |
a4d04587 | 92 | char *dstend, const char *reserved, |
93 | const char *term, int encode); | |
ef416fc2 | 94 | |
95 | ||
96 | /* | |
97 | * 'httpAssembleURI()' - Assemble a uniform resource identifier from its | |
98 | * components. | |
99 | * | |
ecdc0628 | 100 | * This function escapes reserved characters in the URI depending on the |
101 | * value of the "encoding" argument. You should use this function in | |
102 | * place of traditional string functions whenever you need to create a | |
103 | * URI string. | |
ef416fc2 | 104 | * |
105 | * @since CUPS 1.2@ | |
106 | */ | |
107 | ||
108 | http_uri_status_t /* O - URI status */ | |
a4d04587 | 109 | httpAssembleURI( |
110 | http_uri_coding_t encoding, /* I - Encoding flags */ | |
111 | char *uri, /* I - URI buffer */ | |
112 | int urilen, /* I - Size of URI buffer */ | |
113 | const char *scheme, /* I - Scheme name */ | |
114 | const char *username, /* I - Username */ | |
115 | const char *host, /* I - Hostname or address */ | |
116 | int port, /* I - Port number */ | |
117 | const char *resource) /* I - Resource */ | |
ef416fc2 | 118 | { |
119 | char *ptr, /* Pointer into URI buffer */ | |
120 | *end; /* End of URI buffer */ | |
ef416fc2 | 121 | |
122 | ||
123 | /* | |
124 | * Range check input... | |
125 | */ | |
126 | ||
127 | if (!uri || urilen < 1 || !scheme || port < 0) | |
128 | { | |
129 | if (uri) | |
130 | *uri = '\0'; | |
131 | ||
132 | return (HTTP_URI_BAD_ARGUMENTS); | |
133 | } | |
134 | ||
135 | /* | |
136 | * Assemble the URI starting with the scheme... | |
137 | */ | |
138 | ||
139 | end = uri + urilen - 1; | |
a4d04587 | 140 | ptr = http_copy_encode(uri, scheme, end, NULL, NULL, 0); |
ef416fc2 | 141 | |
142 | if (!ptr) | |
143 | goto assemble_overflow; | |
144 | ||
f7deaa1a | 145 | if (!strcmp(scheme, "mailto")) |
ef416fc2 | 146 | { |
147 | /* | |
148 | * mailto: only has :, no //... | |
149 | */ | |
150 | ||
151 | if (ptr < end) | |
152 | *ptr++ = ':'; | |
153 | else | |
154 | goto assemble_overflow; | |
155 | } | |
156 | else | |
157 | { | |
158 | /* | |
159 | * Schemes other than mailto: all have //... | |
160 | */ | |
161 | ||
162 | if ((ptr + 2) < end) | |
163 | { | |
164 | *ptr++ = ':'; | |
165 | *ptr++ = '/'; | |
166 | *ptr++ = '/'; | |
167 | } | |
168 | else | |
169 | goto assemble_overflow; | |
170 | } | |
171 | ||
172 | /* | |
173 | * Next the username and hostname, if any... | |
174 | */ | |
175 | ||
176 | if (host) | |
177 | { | |
178 | if (username && *username) | |
179 | { | |
180 | /* | |
181 | * Add username@ first... | |
182 | */ | |
183 | ||
a4d04587 | 184 | ptr = http_copy_encode(ptr, username, end, "/?@", NULL, |
185 | encoding & HTTP_URI_CODING_USERNAME); | |
ef416fc2 | 186 | |
187 | if (!ptr) | |
188 | goto assemble_overflow; | |
189 | ||
190 | if (ptr < end) | |
191 | *ptr++ = '@'; | |
192 | else | |
193 | goto assemble_overflow; | |
194 | } | |
195 | ||
196 | /* | |
197 | * Then add the hostname. Since IPv6 is a particular pain to deal | |
198 | * with, we have several special cases to deal with... If we get | |
199 | * an IPv6 address with brackets around it, assume it is already in | |
200 | * URI format... | |
201 | */ | |
202 | ||
203 | if (host[0] != '[' && strchr(host, ':')) | |
204 | { | |
205 | /* | |
206 | * We have an IPv6 address... | |
207 | */ | |
208 | ||
209 | if (strchr(host, '%')) | |
210 | { | |
211 | /* | |
212 | * We have a link-local address, add "[v1." prefix... | |
213 | */ | |
214 | ||
215 | if ((ptr + 4) < end) | |
216 | { | |
217 | *ptr++ = '['; | |
218 | *ptr++ = 'v'; | |
219 | *ptr++ = '1'; | |
220 | *ptr++ = '.'; | |
221 | } | |
222 | else | |
223 | goto assemble_overflow; | |
224 | } | |
225 | else | |
226 | { | |
227 | /* | |
228 | * We have a normal address, add "[" prefix... | |
229 | */ | |
230 | ||
231 | if (ptr < end) | |
232 | *ptr++ = '['; | |
233 | else | |
234 | goto assemble_overflow; | |
235 | } | |
236 | ||
237 | /* | |
238 | * Copy the rest of the IPv6 address, and terminate with "]". | |
239 | */ | |
240 | ||
241 | while (ptr < end && *host) | |
242 | { | |
243 | if (*host == '%') | |
244 | { | |
245 | *ptr++ = '+'; /* Convert zone separator */ | |
246 | host ++; | |
247 | } | |
248 | else | |
249 | *ptr++ = *host++; | |
250 | } | |
251 | ||
252 | if (*host) | |
253 | goto assemble_overflow; | |
254 | ||
255 | if (ptr < end) | |
256 | *ptr++ = ']'; | |
257 | else | |
258 | goto assemble_overflow; | |
259 | } | |
260 | else | |
261 | { | |
262 | /* | |
263 | * Otherwise, just copy the host string... | |
264 | */ | |
265 | ||
a4d04587 | 266 | ptr = http_copy_encode(ptr, host, end, NULL, NULL, |
267 | encoding & HTTP_URI_CODING_HOSTNAME); | |
ef416fc2 | 268 | |
269 | if (!ptr) | |
270 | goto assemble_overflow; | |
271 | } | |
272 | ||
273 | /* | |
274 | * Finish things off with the port number... | |
275 | */ | |
276 | ||
277 | if (port > 0) | |
278 | { | |
279 | snprintf(ptr, end - ptr + 1, ":%d", port); | |
280 | ptr += strlen(ptr); | |
281 | ||
282 | if (ptr >= end) | |
283 | goto assemble_overflow; | |
284 | } | |
285 | } | |
286 | ||
287 | /* | |
288 | * Last but not least, add the resource string... | |
289 | */ | |
290 | ||
a4d04587 | 291 | if (resource) |
ef416fc2 | 292 | { |
fa73b229 | 293 | char *query; /* Pointer to query string */ |
294 | ||
295 | ||
fa73b229 | 296 | /* |
a4d04587 | 297 | * Copy the resource string up to the query string if present... |
fa73b229 | 298 | */ |
299 | ||
a4d04587 | 300 | query = strchr(resource, '?'); |
301 | ptr = http_copy_encode(ptr, resource, end, NULL, "?", | |
302 | encoding & HTTP_URI_CODING_RESOURCE); | |
ef416fc2 | 303 | if (!ptr) |
304 | goto assemble_overflow; | |
fa73b229 | 305 | |
306 | if (query) | |
307 | { | |
308 | /* | |
309 | * Copy query string without encoding... | |
310 | */ | |
311 | ||
a4d04587 | 312 | ptr = http_copy_encode(ptr, query, end, NULL, NULL, |
313 | encoding & HTTP_URI_CODING_QUERY); | |
314 | if (!ptr) | |
315 | goto assemble_overflow; | |
fa73b229 | 316 | } |
ef416fc2 | 317 | } |
318 | else if (ptr < end) | |
319 | *ptr++ = '/'; | |
320 | else | |
321 | goto assemble_overflow; | |
322 | ||
323 | /* | |
324 | * Nul-terminate the URI buffer and return with no errors... | |
325 | */ | |
326 | ||
327 | *ptr = '\0'; | |
328 | ||
329 | return (HTTP_URI_OK); | |
330 | ||
331 | /* | |
332 | * Clear the URI string and return an overflow error; I don't usually | |
333 | * like goto's, but in this case it makes sense... | |
334 | */ | |
335 | ||
336 | assemble_overflow: | |
337 | ||
338 | *uri = '\0'; | |
339 | return (HTTP_URI_OVERFLOW); | |
340 | } | |
341 | ||
342 | ||
a4d04587 | 343 | /* |
344 | * 'httpAssembleURIf()' - Assemble a uniform resource identifier from its | |
345 | * components with a formatted resource. | |
346 | * | |
347 | * This function creates a formatted version of the resource string | |
ecdc0628 | 348 | * argument "resourcef" and escapes reserved characters in the URI |
349 | * depending on the value of the "encoding" argument. You should use | |
350 | * this function in place of traditional string functions whenever | |
351 | * you need to create a URI string. | |
a4d04587 | 352 | * |
353 | * @since CUPS 1.2@ | |
354 | */ | |
355 | ||
356 | http_uri_status_t /* O - URI status */ | |
357 | httpAssembleURIf( | |
358 | http_uri_coding_t encoding, /* I - Encoding flags */ | |
359 | char *uri, /* I - URI buffer */ | |
360 | int urilen, /* I - Size of URI buffer */ | |
361 | const char *scheme, /* I - Scheme name */ | |
362 | const char *username, /* I - Username */ | |
363 | const char *host, /* I - Hostname or address */ | |
364 | int port, /* I - Port number */ | |
365 | const char *resourcef, /* I - Printf-style resource */ | |
366 | ...) /* I - Additional arguments as needed */ | |
367 | { | |
368 | va_list ap; /* Pointer to additional arguments */ | |
369 | char resource[1024]; /* Formatted resource string */ | |
370 | int bytes; /* Bytes in formatted string */ | |
371 | ||
372 | ||
373 | /* | |
374 | * Range check input... | |
375 | */ | |
376 | ||
377 | if (!uri || urilen < 1 || !scheme || port < 0 || !resourcef) | |
378 | { | |
379 | if (uri) | |
380 | *uri = '\0'; | |
381 | ||
382 | return (HTTP_URI_BAD_ARGUMENTS); | |
383 | } | |
384 | ||
385 | /* | |
386 | * Format the resource string and assemble the URI... | |
387 | */ | |
388 | ||
389 | va_start(ap, resourcef); | |
390 | bytes = vsnprintf(resource, sizeof(resource), resourcef, ap); | |
391 | va_end(ap); | |
392 | ||
393 | if (bytes >= sizeof(resource)) | |
394 | { | |
395 | *uri = '\0'; | |
396 | return (HTTP_URI_OVERFLOW); | |
397 | } | |
398 | else | |
399 | return (httpAssembleURI(encoding, uri, urilen, scheme, username, host, | |
400 | port, resource)); | |
401 | } | |
402 | ||
403 | ||
ef416fc2 | 404 | /* |
405 | * 'httpDecode64()' - Base64-decode a string. | |
ecdc0628 | 406 | * |
407 | * This function is deprecated. Use the httpDecode64_2() function instead | |
408 | * which provides buffer length arguments. | |
409 | * | |
410 | * @deprecated@ | |
ef416fc2 | 411 | */ |
412 | ||
413 | char * /* O - Decoded string */ | |
414 | httpDecode64(char *out, /* I - String to write to */ | |
415 | const char *in) /* I - String to read from */ | |
416 | { | |
417 | int outlen; /* Output buffer length */ | |
418 | ||
419 | ||
420 | /* | |
421 | * Use the old maximum buffer size for binary compatibility... | |
422 | */ | |
423 | ||
424 | outlen = 512; | |
425 | ||
426 | return (httpDecode64_2(out, &outlen, in)); | |
427 | } | |
428 | ||
429 | ||
430 | /* | |
431 | * 'httpDecode64_2()' - Base64-decode a string. | |
432 | * | |
433 | * @since CUPS 1.1.21@ | |
434 | */ | |
435 | ||
436 | char * /* O - Decoded string */ | |
437 | httpDecode64_2(char *out, /* I - String to write to */ | |
438 | int *outlen, /* IO - Size of output string */ | |
439 | const char *in) /* I - String to read from */ | |
440 | { | |
441 | int pos, /* Bit position */ | |
442 | base64; /* Value of this character */ | |
443 | char *outptr, /* Output pointer */ | |
444 | *outend; /* End of output buffer */ | |
445 | ||
446 | ||
447 | /* | |
448 | * Range check input... | |
449 | */ | |
450 | ||
fa73b229 | 451 | if (!out || !outlen || *outlen < 1 || !in) |
ef416fc2 | 452 | return (NULL); |
453 | ||
fa73b229 | 454 | if (!*in) |
455 | { | |
456 | *out = '\0'; | |
457 | *outlen = 0; | |
458 | ||
459 | return (out); | |
460 | } | |
461 | ||
ef416fc2 | 462 | /* |
463 | * Convert from base-64 to bytes... | |
464 | */ | |
465 | ||
466 | for (outptr = out, outend = out + *outlen - 1, pos = 0; *in != '\0'; in ++) | |
467 | { | |
468 | /* | |
469 | * Decode this character into a number from 0 to 63... | |
470 | */ | |
471 | ||
472 | if (*in >= 'A' && *in <= 'Z') | |
473 | base64 = *in - 'A'; | |
474 | else if (*in >= 'a' && *in <= 'z') | |
475 | base64 = *in - 'a' + 26; | |
476 | else if (*in >= '0' && *in <= '9') | |
477 | base64 = *in - '0' + 52; | |
478 | else if (*in == '+') | |
479 | base64 = 62; | |
480 | else if (*in == '/') | |
481 | base64 = 63; | |
482 | else if (*in == '=') | |
483 | break; | |
484 | else | |
485 | continue; | |
486 | ||
487 | /* | |
488 | * Store the result in the appropriate chars... | |
489 | */ | |
490 | ||
491 | switch (pos) | |
492 | { | |
493 | case 0 : | |
494 | if (outptr < outend) | |
495 | *outptr = base64 << 2; | |
496 | pos ++; | |
497 | break; | |
498 | case 1 : | |
499 | if (outptr < outend) | |
500 | *outptr++ |= (base64 >> 4) & 3; | |
501 | if (outptr < outend) | |
502 | *outptr = (base64 << 4) & 255; | |
503 | pos ++; | |
504 | break; | |
505 | case 2 : | |
506 | if (outptr < outend) | |
507 | *outptr++ |= (base64 >> 2) & 15; | |
508 | if (outptr < outend) | |
509 | *outptr = (base64 << 6) & 255; | |
510 | pos ++; | |
511 | break; | |
512 | case 3 : | |
513 | if (outptr < outend) | |
514 | *outptr++ |= base64; | |
515 | pos = 0; | |
516 | break; | |
517 | } | |
518 | } | |
519 | ||
520 | *outptr = '\0'; | |
521 | ||
522 | /* | |
523 | * Return the decoded string and size... | |
524 | */ | |
525 | ||
526 | *outlen = (int)(outptr - out); | |
527 | ||
528 | return (out); | |
529 | } | |
530 | ||
531 | ||
532 | /* | |
533 | * 'httpEncode64()' - Base64-encode a string. | |
ecdc0628 | 534 | * |
535 | * This function is deprecated. Use the httpEncode64_2() function instead | |
536 | * which provides buffer length arguments. | |
537 | * | |
538 | * @deprecated@ | |
ef416fc2 | 539 | */ |
540 | ||
541 | char * /* O - Encoded string */ | |
542 | httpEncode64(char *out, /* I - String to write to */ | |
543 | const char *in) /* I - String to read from */ | |
544 | { | |
b86bc4cf | 545 | return (httpEncode64_2(out, 512, in, (int)strlen(in))); |
ef416fc2 | 546 | } |
547 | ||
548 | ||
549 | /* | |
550 | * 'httpEncode64_2()' - Base64-encode a string. | |
551 | * | |
552 | * @since CUPS 1.1.21@ | |
553 | */ | |
554 | ||
555 | char * /* O - Encoded string */ | |
556 | httpEncode64_2(char *out, /* I - String to write to */ | |
557 | int outlen, /* I - Size of output string */ | |
558 | const char *in, /* I - String to read from */ | |
559 | int inlen) /* I - Size of input string */ | |
560 | { | |
561 | char *outptr, /* Output pointer */ | |
562 | *outend; /* End of output buffer */ | |
563 | static const char base64[] = /* Base64 characters... */ | |
564 | { | |
565 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
566 | "abcdefghijklmnopqrstuvwxyz" | |
567 | "0123456789" | |
568 | "+/" | |
569 | }; | |
570 | ||
571 | ||
572 | /* | |
573 | * Range check input... | |
574 | */ | |
575 | ||
576 | if (!out || outlen < 1 || !in) | |
577 | return (NULL); | |
578 | ||
579 | /* | |
580 | * Convert bytes to base-64... | |
581 | */ | |
582 | ||
583 | for (outptr = out, outend = out + outlen - 1; inlen > 0; in ++, inlen --) | |
584 | { | |
585 | /* | |
586 | * Encode the up to 3 characters as 4 Base64 numbers... | |
587 | */ | |
588 | ||
589 | if (outptr < outend) | |
590 | *outptr ++ = base64[(in[0] & 255) >> 2]; | |
26d47ec6 | 591 | |
ef416fc2 | 592 | if (outptr < outend) |
26d47ec6 | 593 | { |
594 | if (inlen > 1) | |
595 | *outptr ++ = base64[(((in[0] & 255) << 4) | ((in[1] & 255) >> 4)) & 63]; | |
596 | else | |
597 | *outptr ++ = base64[((in[0] & 255) << 4) & 63]; | |
598 | } | |
ef416fc2 | 599 | |
600 | in ++; | |
601 | inlen --; | |
602 | if (inlen <= 0) | |
603 | { | |
604 | if (outptr < outend) | |
605 | *outptr ++ = '='; | |
606 | if (outptr < outend) | |
607 | *outptr ++ = '='; | |
608 | break; | |
609 | } | |
610 | ||
611 | if (outptr < outend) | |
26d47ec6 | 612 | { |
613 | if (inlen > 1) | |
614 | *outptr ++ = base64[(((in[0] & 255) << 2) | ((in[1] & 255) >> 6)) & 63]; | |
615 | else | |
616 | *outptr ++ = base64[((in[0] & 255) << 2) & 63]; | |
617 | } | |
ef416fc2 | 618 | |
619 | in ++; | |
620 | inlen --; | |
621 | if (inlen <= 0) | |
622 | { | |
623 | if (outptr < outend) | |
624 | *outptr ++ = '='; | |
625 | break; | |
626 | } | |
627 | ||
628 | if (outptr < outend) | |
629 | *outptr ++ = base64[in[0] & 63]; | |
630 | } | |
631 | ||
632 | *outptr = '\0'; | |
633 | ||
634 | /* | |
635 | * Return the encoded string... | |
636 | */ | |
637 | ||
638 | return (out); | |
639 | } | |
640 | ||
641 | ||
642 | /* | |
643 | * 'httpGetDateString()' - Get a formatted date/time string from a time value. | |
644 | * | |
645 | * @deprecated@ | |
646 | */ | |
647 | ||
648 | const char * /* O - Date/time string */ | |
649 | httpGetDateString(time_t t) /* I - UNIX time */ | |
650 | { | |
651 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
652 | ||
653 | ||
654 | return (httpGetDateString2(t, cg->http_date, sizeof(cg->http_date))); | |
655 | } | |
656 | ||
657 | ||
658 | /* | |
659 | * 'httpGetDateString2()' - Get a formatted date/time string from a time value. | |
660 | * | |
661 | * @since CUPS 1.2@ | |
662 | */ | |
663 | ||
664 | const char * /* O - Date/time string */ | |
665 | httpGetDateString2(time_t t, /* I - UNIX time */ | |
666 | char *s, /* I - String buffer */ | |
667 | int slen) /* I - Size of string buffer */ | |
668 | { | |
669 | struct tm *tdate; /* UNIX date/time data */ | |
670 | ||
671 | ||
672 | tdate = gmtime(&t); | |
673 | snprintf(s, slen, "%s, %02d %s %d %02d:%02d:%02d GMT", | |
674 | http_days[tdate->tm_wday], tdate->tm_mday, | |
675 | http_months[tdate->tm_mon], tdate->tm_year + 1900, | |
676 | tdate->tm_hour, tdate->tm_min, tdate->tm_sec); | |
677 | ||
678 | return (s); | |
679 | } | |
680 | ||
681 | ||
682 | /* | |
683 | * 'httpGetDateTime()' - Get a time value from a formatted date/time string. | |
684 | */ | |
685 | ||
686 | time_t /* O - UNIX time */ | |
687 | httpGetDateTime(const char *s) /* I - Date/time string */ | |
688 | { | |
689 | int i; /* Looping var */ | |
690 | char mon[16]; /* Abbreviated month name */ | |
691 | int day, year; /* Day of month and year */ | |
692 | int hour, min, sec; /* Time */ | |
693 | int days; /* Number of days since 1970 */ | |
694 | static const int normal_days[] = /* Days to a month, normal years */ | |
695 | { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; | |
696 | static const int leap_days[] = /* Days to a month, leap years */ | |
697 | { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }; | |
698 | ||
699 | ||
700 | DEBUG_printf(("httpGetDateTime(s=\"%s\")\n", s)); | |
701 | ||
702 | /* | |
703 | * Extract the date and time from the formatted string... | |
704 | */ | |
705 | ||
706 | if (sscanf(s, "%*s%d%15s%d%d:%d:%d", &day, mon, &year, &hour, &min, &sec) < 6) | |
707 | return (0); | |
708 | ||
709 | DEBUG_printf((" day=%d, mon=\"%s\", year=%d, hour=%d, min=%d, sec=%d\n", | |
710 | day, mon, year, hour, min, sec)); | |
711 | ||
712 | /* | |
713 | * Convert the month name to a number from 0 to 11. | |
714 | */ | |
715 | ||
716 | for (i = 0; i < 12; i ++) | |
717 | if (!strcasecmp(mon, http_months[i])) | |
718 | break; | |
719 | ||
720 | if (i >= 12) | |
721 | return (0); | |
722 | ||
723 | DEBUG_printf((" i=%d\n", i)); | |
724 | ||
725 | /* | |
726 | * Now convert the date and time to a UNIX time value in seconds since | |
727 | * 1970. We can't use mktime() since the timezone may not be UTC but | |
728 | * the date/time string *is* UTC. | |
729 | */ | |
730 | ||
731 | if ((year & 3) == 0 && ((year % 100) != 0 || (year % 400) == 0)) | |
732 | days = leap_days[i] + day - 1; | |
733 | else | |
734 | days = normal_days[i] + day - 1; | |
735 | ||
736 | DEBUG_printf((" days=%d\n", days)); | |
737 | ||
738 | days += (year - 1970) * 365 + /* 365 days per year (normally) */ | |
739 | ((year - 1) / 4 - 492) - /* + leap days */ | |
740 | ((year - 1) / 100 - 19) + /* - 100 year days */ | |
741 | ((year - 1) / 400 - 4); /* + 400 year days */ | |
742 | ||
743 | DEBUG_printf((" days=%d\n", days)); | |
744 | ||
745 | return (days * 86400 + hour * 3600 + min * 60 + sec); | |
746 | } | |
747 | ||
748 | ||
749 | /* | |
750 | * 'httpSeparate()' - Separate a Universal Resource Identifier into its | |
751 | * components. | |
ecdc0628 | 752 | * |
753 | * This function is deprecated; use the httpSeparateURI() function instead. | |
754 | * | |
755 | * @deprecated@ | |
ef416fc2 | 756 | */ |
757 | ||
758 | void | |
759 | httpSeparate(const char *uri, /* I - Universal Resource Identifier */ | |
760 | char *scheme, /* O - Scheme [32] (http, https, etc.) */ | |
761 | char *username, /* O - Username [1024] */ | |
762 | char *host, /* O - Hostname [1024] */ | |
763 | int *port, /* O - Port number to use */ | |
764 | char *resource) /* O - Resource/filename [1024] */ | |
765 | { | |
a4d04587 | 766 | httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, 32, username, |
767 | HTTP_MAX_URI, host, HTTP_MAX_URI, port, resource, | |
768 | HTTP_MAX_URI); | |
ef416fc2 | 769 | } |
770 | ||
771 | ||
772 | /* | |
773 | * 'httpSeparate2()' - Separate a Universal Resource Identifier into its | |
774 | * components. | |
775 | * | |
ecdc0628 | 776 | * This function is deprecated; use the httpSeparateURI() function instead. |
777 | * | |
ef416fc2 | 778 | * @since CUPS 1.1.21@ |
ecdc0628 | 779 | * @deprecated@ |
ef416fc2 | 780 | */ |
781 | ||
782 | void | |
783 | httpSeparate2(const char *uri, /* I - Universal Resource Identifier */ | |
784 | char *scheme, /* O - Scheme (http, https, etc.) */ | |
785 | int schemelen, /* I - Size of scheme buffer */ | |
786 | char *username, /* O - Username */ | |
787 | int usernamelen, /* I - Size of username buffer */ | |
788 | char *host, /* O - Hostname */ | |
789 | int hostlen, /* I - Size of hostname buffer */ | |
790 | int *port, /* O - Port number to use */ | |
791 | char *resource, /* O - Resource/filename */ | |
792 | int resourcelen) /* I - Size of resource buffer */ | |
793 | { | |
a4d04587 | 794 | httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, schemelen, username, |
795 | usernamelen, host, hostlen, port, resource, resourcelen); | |
ef416fc2 | 796 | } |
797 | ||
798 | ||
799 | /* | |
800 | * 'httpSeparateURI()' - Separate a Universal Resource Identifier into its | |
801 | * components. | |
802 | * | |
803 | * @since CUPS 1.2@ | |
804 | */ | |
805 | ||
806 | http_uri_status_t /* O - Result of separation */ | |
a4d04587 | 807 | httpSeparateURI( |
808 | http_uri_coding_t decoding, /* I - Decoding flags */ | |
809 | const char *uri, /* I - Universal Resource Identifier */ | |
810 | char *scheme, /* O - Scheme (http, https, etc.) */ | |
811 | int schemelen, /* I - Size of scheme buffer */ | |
812 | char *username, /* O - Username */ | |
813 | int usernamelen, /* I - Size of username buffer */ | |
814 | char *host, /* O - Hostname */ | |
815 | int hostlen, /* I - Size of hostname buffer */ | |
816 | int *port, /* O - Port number to use */ | |
817 | char *resource, /* O - Resource/filename */ | |
818 | int resourcelen) /* I - Size of resource buffer */ | |
ef416fc2 | 819 | { |
820 | char *ptr, /* Pointer into string... */ | |
821 | *end; /* End of string */ | |
822 | const char *sep; /* Separator character */ | |
823 | http_uri_status_t status; /* Result of separation */ | |
824 | ||
825 | ||
826 | /* | |
827 | * Initialize everything to blank... | |
828 | */ | |
829 | ||
830 | if (scheme && schemelen > 0) | |
831 | *scheme = '\0'; | |
832 | ||
833 | if (username && usernamelen > 0) | |
834 | *username = '\0'; | |
835 | ||
836 | if (host && hostlen > 0) | |
837 | *host = '\0'; | |
838 | ||
839 | if (port) | |
840 | *port = 0; | |
841 | ||
842 | if (resource && resourcelen > 0) | |
843 | *resource = '\0'; | |
844 | ||
845 | /* | |
846 | * Range check input... | |
847 | */ | |
848 | ||
849 | if (!uri || !port || !scheme || schemelen <= 0 || !username || | |
850 | usernamelen <= 0 || !host || hostlen <= 0 || !resource || | |
851 | resourcelen <= 0) | |
852 | return (HTTP_URI_BAD_ARGUMENTS); | |
853 | ||
854 | if (!*uri) | |
855 | return (HTTP_URI_BAD_URI); | |
856 | ||
857 | /* | |
858 | * Grab the scheme portion of the URI... | |
859 | */ | |
860 | ||
861 | status = HTTP_URI_OK; | |
862 | ||
863 | if (!strncmp(uri, "//", 2)) | |
864 | { | |
865 | /* | |
866 | * Workaround for HP IPP client bug... | |
867 | */ | |
868 | ||
869 | strlcpy(scheme, "ipp", schemelen); | |
870 | status = HTTP_URI_MISSING_SCHEME; | |
871 | } | |
872 | else if (*uri == '/') | |
873 | { | |
874 | /* | |
875 | * Filename... | |
876 | */ | |
877 | ||
878 | strlcpy(scheme, "file", schemelen); | |
879 | status = HTTP_URI_MISSING_SCHEME; | |
880 | } | |
881 | else | |
882 | { | |
883 | /* | |
884 | * Standard URI with scheme... | |
885 | */ | |
886 | ||
887 | for (ptr = scheme, end = scheme + schemelen - 1; | |
888 | *uri && *uri != ':' && ptr < end;) | |
889 | if (isalnum(*uri & 255) || *uri == '-' || *uri == '+' || *uri == '.') | |
890 | *ptr++ = *uri++; | |
891 | else | |
892 | break; | |
893 | ||
894 | *ptr = '\0'; | |
895 | ||
896 | if (*uri != ':') | |
897 | { | |
898 | *scheme = '\0'; | |
899 | return (HTTP_URI_BAD_SCHEME); | |
900 | } | |
901 | ||
902 | uri ++; | |
903 | } | |
904 | ||
905 | /* | |
906 | * Set the default port number... | |
907 | */ | |
908 | ||
909 | if (!strcmp(scheme, "http")) | |
910 | *port = 80; | |
911 | else if (!strcmp(scheme, "https")) | |
912 | *port = 443; | |
913 | else if (!strcmp(scheme, "ipp")) | |
914 | *port = 631; | |
915 | else if (!strcasecmp(scheme, "lpd")) | |
916 | *port = 515; | |
917 | else if (!strcmp(scheme, "socket")) /* Not yet registered with IANA... */ | |
918 | *port = 9100; | |
919 | else if (strcmp(scheme, "file") && strcmp(scheme, "mailto")) | |
920 | status = HTTP_URI_UNKNOWN_SCHEME; | |
921 | ||
922 | /* | |
923 | * Now see if we have a hostname... | |
924 | */ | |
925 | ||
926 | if (!strncmp(uri, "//", 2)) | |
927 | { | |
928 | /* | |
929 | * Yes, extract it... | |
930 | */ | |
931 | ||
932 | uri += 2; | |
933 | ||
934 | /* | |
935 | * Grab the username, if any... | |
936 | */ | |
937 | ||
938 | if ((sep = strpbrk(uri, "@/")) != NULL && *sep == '@') | |
939 | { | |
940 | /* | |
941 | * Get a username:password combo... | |
942 | */ | |
943 | ||
a4d04587 | 944 | uri = http_copy_decode(username, uri, usernamelen, "@", |
945 | decoding & HTTP_URI_CODING_USERNAME); | |
ef416fc2 | 946 | |
947 | if (!uri) | |
948 | { | |
949 | *username = '\0'; | |
950 | return (HTTP_URI_BAD_USERNAME); | |
951 | } | |
952 | ||
953 | uri ++; | |
954 | } | |
955 | ||
956 | /* | |
957 | * Then the hostname/IP address... | |
958 | */ | |
959 | ||
960 | if (*uri == '[') | |
961 | { | |
962 | /* | |
963 | * Grab IPv6 address... | |
964 | */ | |
965 | ||
966 | uri ++; | |
967 | if (!strncmp(uri, "v1.", 3)) | |
968 | uri += 3; /* Skip IPvN leader... */ | |
969 | ||
a4d04587 | 970 | uri = http_copy_decode(host, uri, hostlen, "]", |
971 | decoding & HTTP_URI_CODING_HOSTNAME); | |
ef416fc2 | 972 | |
973 | if (!uri) | |
974 | { | |
975 | *host = '\0'; | |
976 | return (HTTP_URI_BAD_HOSTNAME); | |
977 | } | |
978 | ||
979 | /* | |
980 | * Validate value... | |
981 | */ | |
982 | ||
983 | if (*uri != ']') | |
984 | { | |
985 | *host = '\0'; | |
986 | return (HTTP_URI_BAD_HOSTNAME); | |
987 | } | |
988 | ||
989 | uri ++; | |
990 | ||
991 | for (ptr = host; *ptr; ptr ++) | |
992 | if (*ptr == '+') | |
993 | { | |
994 | /* | |
995 | * Convert zone separator to % and stop here... | |
996 | */ | |
997 | ||
998 | *ptr = '%'; | |
999 | break; | |
1000 | } | |
1001 | else if (*ptr != ':' && *ptr != '.' && !isxdigit(*ptr & 255)) | |
1002 | { | |
1003 | *host = '\0'; | |
1004 | return (HTTP_URI_BAD_HOSTNAME); | |
1005 | } | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | /* | |
b423cd4c | 1010 | * Validate the hostname or IPv4 address first... |
1011 | */ | |
1012 | ||
1013 | for (ptr = (char *)uri; *ptr; ptr ++) | |
1014 | if (strchr(":?/", *ptr)) | |
1015 | break; | |
1016 | else if (!strchr("abcdefghijklmnopqrstuvwxyz" | |
1017 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
1018 | "0123456789" | |
1019 | "-._~" | |
1020 | "%" | |
2fb76298 | 1021 | "!$&'()*+,;=\\", *ptr)) |
b423cd4c | 1022 | { |
1023 | *host = '\0'; | |
1024 | return (HTTP_URI_BAD_HOSTNAME); | |
1025 | } | |
1026 | ||
1027 | /* | |
1028 | * Then copy the hostname or IPv4 address to the buffer... | |
ef416fc2 | 1029 | */ |
1030 | ||
a4d04587 | 1031 | uri = http_copy_decode(host, uri, hostlen, ":?/", |
1032 | decoding & HTTP_URI_CODING_HOSTNAME); | |
ef416fc2 | 1033 | |
1034 | if (!uri) | |
1035 | { | |
1036 | *host = '\0'; | |
1037 | return (HTTP_URI_BAD_HOSTNAME); | |
1038 | } | |
ef416fc2 | 1039 | } |
1040 | ||
1041 | /* | |
1042 | * Validate hostname for file scheme - only empty and localhost are | |
1043 | * acceptable. | |
1044 | */ | |
1045 | ||
1046 | if (!strcmp(scheme, "file") && strcmp(host, "localhost") && host[0]) | |
1047 | { | |
1048 | *host = '\0'; | |
1049 | return (HTTP_URI_BAD_HOSTNAME); | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * See if we have a port number... | |
1054 | */ | |
1055 | ||
1056 | if (*uri == ':') | |
1057 | { | |
1058 | /* | |
1059 | * Yes, collect the port number... | |
1060 | */ | |
1061 | ||
1062 | *port = strtol(uri + 1, (char **)&uri, 10); | |
1063 | ||
d6ae789d | 1064 | if (*uri != '/' && *uri) |
ef416fc2 | 1065 | { |
1066 | *port = 0; | |
1067 | return (HTTP_URI_BAD_PORT); | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * The remaining portion is the resource string... | |
1074 | */ | |
1075 | ||
1076 | if (*uri == '?' || !*uri) | |
1077 | { | |
1078 | /* | |
1079 | * Hostname but no path... | |
1080 | */ | |
1081 | ||
1082 | status = HTTP_URI_MISSING_RESOURCE; | |
1083 | *resource = '/'; | |
fa73b229 | 1084 | |
1085 | /* | |
a4d04587 | 1086 | * Copy any query string... |
fa73b229 | 1087 | */ |
1088 | ||
1089 | if (*uri == '?') | |
a4d04587 | 1090 | uri = http_copy_decode(resource + 1, uri, resourcelen - 1, NULL, |
1091 | decoding & HTTP_URI_CODING_QUERY); | |
fa73b229 | 1092 | else |
1093 | resource[1] = '\0'; | |
ef416fc2 | 1094 | } |
1095 | else | |
fa73b229 | 1096 | { |
a4d04587 | 1097 | uri = http_copy_decode(resource, uri, resourcelen, "?", |
1098 | decoding & HTTP_URI_CODING_RESOURCE); | |
fa73b229 | 1099 | |
1100 | if (uri && *uri == '?') | |
1101 | { | |
1102 | /* | |
a4d04587 | 1103 | * Concatenate any query string... |
fa73b229 | 1104 | */ |
1105 | ||
a4d04587 | 1106 | char *resptr = resource + strlen(resource); |
1107 | ||
b86bc4cf | 1108 | uri = http_copy_decode(resptr, uri, resourcelen - (int)(resptr - resource), |
a4d04587 | 1109 | NULL, decoding & HTTP_URI_CODING_QUERY); |
fa73b229 | 1110 | } |
1111 | } | |
ef416fc2 | 1112 | |
1113 | if (!uri) | |
1114 | { | |
1115 | *resource = '\0'; | |
1116 | return (HTTP_URI_BAD_RESOURCE); | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * Return the URI separation status... | |
1121 | */ | |
1122 | ||
1123 | return (status); | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* | |
1128 | * 'httpStatus()' - Return a short string describing a HTTP status code. | |
1129 | */ | |
1130 | ||
1131 | const char * /* O - String or NULL */ | |
1132 | httpStatus(http_status_t status) /* I - HTTP status code */ | |
1133 | { | |
1134 | switch (status) | |
1135 | { | |
1136 | case HTTP_CONTINUE : | |
1137 | return ("Continue"); | |
1138 | case HTTP_SWITCHING_PROTOCOLS : | |
1139 | return ("Switching Protocols"); | |
1140 | case HTTP_OK : | |
1141 | return ("OK"); | |
1142 | case HTTP_CREATED : | |
1143 | return ("Created"); | |
1144 | case HTTP_ACCEPTED : | |
1145 | return ("Accepted"); | |
1146 | case HTTP_NO_CONTENT : | |
1147 | return ("No Content"); | |
d6ae789d | 1148 | case HTTP_MOVED_PERMANENTLY : |
1149 | return ("Moved Permanently"); | |
1150 | case HTTP_SEE_OTHER : | |
1151 | return ("See Other"); | |
ef416fc2 | 1152 | case HTTP_NOT_MODIFIED : |
1153 | return ("Not Modified"); | |
1154 | case HTTP_BAD_REQUEST : | |
1155 | return ("Bad Request"); | |
1156 | case HTTP_UNAUTHORIZED : | |
1157 | return ("Unauthorized"); | |
1158 | case HTTP_FORBIDDEN : | |
1159 | return ("Forbidden"); | |
1160 | case HTTP_NOT_FOUND : | |
1161 | return ("Not Found"); | |
1162 | case HTTP_REQUEST_TOO_LARGE : | |
1163 | return ("Request Entity Too Large"); | |
1164 | case HTTP_URI_TOO_LONG : | |
1165 | return ("URI Too Long"); | |
1166 | case HTTP_UPGRADE_REQUIRED : | |
1167 | return ("Upgrade Required"); | |
1168 | case HTTP_NOT_IMPLEMENTED : | |
1169 | return ("Not Implemented"); | |
1170 | case HTTP_NOT_SUPPORTED : | |
1171 | return ("Not Supported"); | |
b423cd4c | 1172 | case HTTP_EXPECTATION_FAILED : |
1173 | return ("Expectation Failed"); | |
1174 | ||
ef416fc2 | 1175 | default : |
1176 | return ("Unknown"); | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | ||
1181 | #ifndef HAVE_HSTRERROR | |
1182 | /* | |
1183 | * '_cups_hstrerror()' - hstrerror() emulation function for Solaris and others... | |
1184 | */ | |
1185 | ||
1186 | const char * /* O - Error string */ | |
1187 | _cups_hstrerror(int error) /* I - Error number */ | |
1188 | { | |
1189 | static const char * const errors[] = /* Error strings */ | |
1190 | { | |
1191 | "OK", | |
1192 | "Host not found.", | |
1193 | "Try again.", | |
1194 | "Unrecoverable lookup error.", | |
1195 | "No data associated with name." | |
1196 | }; | |
1197 | ||
1198 | ||
1199 | if (error < 0 || error > 4) | |
1200 | return ("Unknown hostname lookup error."); | |
1201 | else | |
1202 | return (errors[error]); | |
1203 | } | |
1204 | #endif /* !HAVE_HSTRERROR */ | |
1205 | ||
1206 | ||
839a51c8 MS |
1207 | /* |
1208 | * '_httpEncodeURI()' - Percent-encode a HTTP request URI. | |
1209 | */ | |
1210 | ||
1211 | char * /* O - Encoded URI */ | |
1212 | _httpEncodeURI(char *dst, /* I - Destination buffer */ | |
1213 | const char *src, /* I - Source URI */ | |
1214 | size_t dstsize) /* I - Size of destination buffer */ | |
1215 | { | |
1216 | http_copy_encode(dst, src, dst + dstsize - 1, NULL, NULL, 1); | |
1217 | return (dst); | |
1218 | } | |
1219 | ||
1220 | ||
ef416fc2 | 1221 | /* |
1222 | * 'http_copy_decode()' - Copy and decode a URI. | |
1223 | */ | |
1224 | ||
1225 | static const char * /* O - New source pointer or NULL on error */ | |
1226 | http_copy_decode(char *dst, /* O - Destination buffer */ | |
1227 | const char *src, /* I - Source pointer */ | |
1228 | int dstsize, /* I - Destination size */ | |
a4d04587 | 1229 | const char *term, /* I - Terminating characters */ |
1230 | int decode) /* I - Decode %-encoded values */ | |
ef416fc2 | 1231 | { |
1232 | char *ptr, /* Pointer into buffer */ | |
1233 | *end; /* End of buffer */ | |
1234 | int quoted; /* Quoted character */ | |
1235 | ||
1236 | ||
1237 | /* | |
1238 | * Copy the src to the destination until we hit a terminating character | |
1239 | * or the end of the string. | |
1240 | */ | |
1241 | ||
e00b005a | 1242 | for (ptr = dst, end = dst + dstsize - 1; |
1243 | *src && (!term || !strchr(term, *src)); | |
1244 | src ++) | |
ef416fc2 | 1245 | if (ptr < end) |
1246 | { | |
a4d04587 | 1247 | if (*src == '%' && decode) |
ef416fc2 | 1248 | { |
1249 | if (isxdigit(src[1] & 255) && isxdigit(src[2] & 255)) | |
1250 | { | |
1251 | /* | |
1252 | * Grab a hex-encoded character... | |
1253 | */ | |
1254 | ||
1255 | src ++; | |
1256 | if (isalpha(*src)) | |
1257 | quoted = (tolower(*src) - 'a' + 10) << 4; | |
1258 | else | |
1259 | quoted = (*src - '0') << 4; | |
1260 | ||
1261 | src ++; | |
1262 | if (isalpha(*src)) | |
1263 | quoted |= tolower(*src) - 'a' + 10; | |
1264 | else | |
1265 | quoted |= *src - '0'; | |
1266 | ||
1267 | *ptr++ = quoted; | |
1268 | } | |
1269 | else | |
1270 | { | |
1271 | /* | |
1272 | * Bad hex-encoded character... | |
1273 | */ | |
1274 | ||
1275 | *ptr = '\0'; | |
1276 | return (NULL); | |
1277 | } | |
1278 | } | |
1279 | else | |
1280 | *ptr++ = *src; | |
1281 | } | |
1282 | ||
1283 | *ptr = '\0'; | |
1284 | ||
1285 | return (src); | |
1286 | } | |
1287 | ||
1288 | ||
1289 | /* | |
1290 | * 'http_copy_encode()' - Copy and encode a URI. | |
1291 | */ | |
1292 | ||
1293 | static char * /* O - End of current URI */ | |
1294 | http_copy_encode(char *dst, /* O - Destination buffer */ | |
1295 | const char *src, /* I - Source pointer */ | |
1296 | char *dstend, /* I - End of destination buffer */ | |
a4d04587 | 1297 | const char *reserved, /* I - Extra reserved characters */ |
1298 | const char *term, /* I - Terminating characters */ | |
1299 | int encode) /* I - %-encode reserved chars? */ | |
ef416fc2 | 1300 | { |
ac884b6a | 1301 | static const char hex[] = "0123456789ABCDEF"; |
ef416fc2 | 1302 | |
1303 | ||
1304 | while (*src && dst < dstend) | |
1305 | { | |
a4d04587 | 1306 | if (term && *src == *term) |
1307 | return (dst); | |
1308 | ||
1309 | if (encode && (*src == '%' || *src <= ' ' || *src & 128 || | |
1310 | (reserved && strchr(reserved, *src)))) | |
ef416fc2 | 1311 | { |
1312 | /* | |
1313 | * Hex encode reserved characters... | |
1314 | */ | |
1315 | ||
1316 | if ((dst + 2) >= dstend) | |
1317 | break; | |
1318 | ||
1319 | *dst++ = '%'; | |
1320 | *dst++ = hex[(*src >> 4) & 15]; | |
1321 | *dst++ = hex[*src & 15]; | |
1322 | ||
1323 | src ++; | |
1324 | } | |
1325 | else | |
1326 | *dst++ = *src++; | |
1327 | } | |
1328 | ||
839a51c8 MS |
1329 | *dst = '\0'; |
1330 | ||
ef416fc2 | 1331 | if (*src) |
1332 | return (NULL); | |
1333 | else | |
1334 | return (dst); | |
1335 | } | |
1336 | ||
1337 | ||
1338 | /* | |
bc44d920 | 1339 | * End of "$Id: http-support.c 6649 2007-07-11 21:46:42Z mike $". |
ef416fc2 | 1340 | */ |