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* curl_easy_strerror() is available as of 7.12.0
[m6w6/ext-http] / http_api.c
1 /*
2 +----------------------------------------------------------------------+
3 | PECL :: http |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.0 of the PHP license, that |
6 | is bundled with this package in the file LICENSE, and is available |
7 | through the world-wide-web at http://www.php.net/license/3_0.txt. |
8 | If you did not receive a copy of the PHP license and are unable to |
9 | obtain it through the world-wide-web, please send a note to |
10 | license@php.net so we can mail you a copy immediately. |
11 +----------------------------------------------------------------------+
12 | Copyright (c) 2004-2005 Michael Wallner <mike@php.net> |
13 +----------------------------------------------------------------------+
14 */
15
16 /* $Id$ */
17
18 #ifdef HAVE_CONFIG_H
19 # include "config.h"
20 #endif
21
22 #include <ctype.h>
23
24 #ifdef PHP_WIN32
25 # include <winsock2.h>
26 #elif defined(HAVE_NETDB_H)
27 # include <netdb.h>
28 #endif
29
30 #include "php.h"
31 #include "php_version.h"
32 #include "php_streams.h"
33 #include "php_output.h"
34 #include "snprintf.h"
35 #include "ext/standard/md5.h"
36 #include "ext/standard/url.h"
37 #include "ext/standard/base64.h"
38 #include "ext/standard/php_string.h"
39 #include "ext/standard/php_smart_str.h"
40 #include "ext/standard/php_lcg.h"
41
42 #include "SAPI.h"
43
44 #ifdef ZEND_ENGINE_2
45 # include "ext/standard/php_http.h"
46 #endif
47
48 #include "php_http.h"
49 #include "php_http_api.h"
50 #include "php_http_std_defs.h"
51
52 ZEND_DECLARE_MODULE_GLOBALS(http)
53
54 /* {{{ day/month names */
55 static const char *days[] = {
56 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
57 };
58 static const char *wkdays[] = {
59 "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
60 };
61 static const char *weekdays[] = {
62 "Monday", "Tuesday", "Wednesday",
63 "Thursday", "Friday", "Saturday", "Sunday"
64 };
65 static const char *months[] = {
66 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
67 "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"
68 };
69 enum assume_next {
70 DATE_MDAY,
71 DATE_YEAR,
72 DATE_TIME
73 };
74 static const struct time_zone {
75 const char *name;
76 const int offset;
77 } time_zones[] = {
78 {"GMT", 0}, /* Greenwich Mean */
79 {"UTC", 0}, /* Universal (Coordinated) */
80 {"WET", 0}, /* Western European */
81 {"BST", 0}, /* British Summer */
82 {"WAT", 60}, /* West Africa */
83 {"AST", 240}, /* Atlantic Standard */
84 {"ADT", 240}, /* Atlantic Daylight */
85 {"EST", 300}, /* Eastern Standard */
86 {"EDT", 300}, /* Eastern Daylight */
87 {"CST", 360}, /* Central Standard */
88 {"CDT", 360}, /* Central Daylight */
89 {"MST", 420}, /* Mountain Standard */
90 {"MDT", 420}, /* Mountain Daylight */
91 {"PST", 480}, /* Pacific Standard */
92 {"PDT", 480}, /* Pacific Daylight */
93 {"YST", 540}, /* Yukon Standard */
94 {"YDT", 540}, /* Yukon Daylight */
95 {"HST", 600}, /* Hawaii Standard */
96 {"HDT", 600}, /* Hawaii Daylight */
97 {"CAT", 600}, /* Central Alaska */
98 {"AHST", 600}, /* Alaska-Hawaii Standard */
99 {"NT", 660}, /* Nome */
100 {"IDLW", 720}, /* International Date Line West */
101 {"CET", -60}, /* Central European */
102 {"MET", -60}, /* Middle European */
103 {"MEWT", -60}, /* Middle European Winter */
104 {"MEST", -120}, /* Middle European Summer */
105 {"CEST", -120}, /* Central European Summer */
106 {"MESZ", -60}, /* Middle European Summer */
107 {"FWT", -60}, /* French Winter */
108 {"FST", -60}, /* French Summer */
109 {"EET", -120}, /* Eastern Europe, USSR Zone 1 */
110 {"WAST", -420}, /* West Australian Standard */
111 {"WADT", -420}, /* West Australian Daylight */
112 {"CCT", -480}, /* China Coast, USSR Zone 7 */
113 {"JST", -540}, /* Japan Standard, USSR Zone 8 */
114 {"EAST", -600}, /* Eastern Australian Standard */
115 {"EADT", -600}, /* Eastern Australian Daylight */
116 {"GST", -600}, /* Guam Standard, USSR Zone 9 */
117 {"NZT", -720}, /* New Zealand */
118 {"NZST", -720}, /* New Zealand Standard */
119 {"NZDT", -720}, /* New Zealand Daylight */
120 {"IDLE", -720}, /* International Date Line East */
121 };
122 /* }}} */
123
124 /* {{{ internals */
125
126 static int http_sort_q(const void *a, const void *b TSRMLS_DC);
127 #define http_send_chunk(d, b, e, m) _http_send_chunk((d), (b), (e), (m) TSRMLS_CC)
128 static STATUS _http_send_chunk(const void *data, const size_t begin, const size_t end, const http_send_mode mode TSRMLS_DC);
129
130 static int check_day(char *day, size_t len);
131 static int check_month(char *month);
132 static int check_tzone(char *tzone);
133
134 static int http_ob_stack_get(php_ob_buffer *, php_ob_buffer **);
135
136 /* {{{ static int http_sort_q(const void *, const void *) */
137 static int http_sort_q(const void *a, const void *b TSRMLS_DC)
138 {
139 Bucket *f, *s;
140 zval result, *first, *second;
141
142 f = *((Bucket **) a);
143 s = *((Bucket **) b);
144
145 first = *((zval **) f->pData);
146 second= *((zval **) s->pData);
147
148 if (numeric_compare_function(&result, first, second TSRMLS_CC) != SUCCESS) {
149 return 0;
150 }
151 return (Z_LVAL(result) > 0 ? -1 : (Z_LVAL(result) < 0 ? 1 : 0));
152 }
153 /* }}} */
154
155 /* {{{ static STATUS http_send_chunk(const void *, size_t, size_t,
156 http_send_mode) */
157 static STATUS _http_send_chunk(const void *data, const size_t begin,
158 const size_t end, const http_send_mode mode TSRMLS_DC)
159 {
160 long len = end - begin;
161
162 switch (mode)
163 {
164 case SEND_RSRC:
165 {
166 char *buf;
167 size_t read = 0;
168 php_stream *s = (php_stream *) data;
169
170 if (php_stream_seek(s, begin, SEEK_SET)) {
171 return FAILURE;
172 }
173
174 buf = (char *) ecalloc(1, HTTP_SENDBUF_SIZE);
175 /* read into buf and write out */
176 while ((len -= HTTP_SENDBUF_SIZE) >= 0) {
177 if (!(read = php_stream_read(s, buf, HTTP_SENDBUF_SIZE))) {
178 efree(buf);
179 return FAILURE;
180 }
181 if (read - php_body_write(buf, read TSRMLS_CC)) {
182 efree(buf);
183 return FAILURE;
184 }
185 /* ob_flush() && flush() */
186 php_end_ob_buffer(1, 1 TSRMLS_CC);
187 sapi_flush(TSRMLS_C);
188 }
189
190 /* read & write left over */
191 if (len) {
192 if (read = php_stream_read(s, buf, HTTP_SENDBUF_SIZE + len)) {
193 if (read - php_body_write(buf, read TSRMLS_CC)) {
194 efree(buf);
195 return FAILURE;
196 }
197 } else {
198 efree(buf);
199 return FAILURE;
200 }
201 /* ob_flush() & flush() */
202 php_end_ob_buffer(1, 1 TSRMLS_CC);
203 sapi_flush(TSRMLS_C);
204 }
205 efree(buf);
206 return SUCCESS;
207 }
208
209 case SEND_DATA:
210 {
211 char *s = (char *) data + begin;
212
213 while ((len -= HTTP_SENDBUF_SIZE) >= 0) {
214 if (HTTP_SENDBUF_SIZE - php_body_write(s, HTTP_SENDBUF_SIZE TSRMLS_CC)) {
215 return FAILURE;
216 }
217 s += HTTP_SENDBUF_SIZE;
218 /* ob_flush() & flush() */
219 php_end_ob_buffer(1, 1 TSRMLS_CC);
220 sapi_flush(TSRMLS_C);
221 }
222
223 /* write left over */
224 if (len) {
225 if (HTTP_SENDBUF_SIZE + len - php_body_write(s, HTTP_SENDBUF_SIZE + len TSRMLS_CC)) {
226 return FAILURE;
227 }
228 /* ob_flush() & flush() */
229 php_end_ob_buffer(1, 1 TSRMLS_CC);
230 sapi_flush(TSRMLS_C);
231 }
232 return SUCCESS;
233 }
234
235 default:
236 return FAILURE;
237 break;
238 }
239 }
240 /* }}} */
241
242 /* {{{ Day/Month/TZ checks for http_parse_date()
243 Originally by libcurl, Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al. */
244 static int check_day(char *day, size_t len)
245 {
246 int i;
247 const char * const *check = (len > 3) ? &weekdays[0] : &wkdays[0];
248 for (i = 0; i < 7; i++) {
249 if (!strcmp(day, check[0])) {
250 return i;
251 }
252 check++;
253 }
254 return -1;
255 }
256
257 static int check_month(char *month)
258 {
259 int i;
260 const char * const *check = &months[0];
261 for (i = 0; i < 12; i++) {
262 if (!strcmp(month, check[0])) {
263 return i;
264 }
265 check++;
266 }
267 return -1;
268 }
269
270 /* return the time zone offset between GMT and the input one, in number
271 of seconds or -1 if the timezone wasn't found/legal */
272
273 static int check_tzone(char *tzone)
274 {
275 int i;
276 const struct time_zone *check = time_zones;
277 for (i = 0; i < sizeof(time_zones) / sizeof(time_zones[0]); i++) {
278 if (!strcmp(tzone, check->name)) {
279 return check->offset * 60;
280 }
281 check++;
282 }
283 return -1;
284 }
285 /* }}} */
286
287 /* char *pretty_key(char *, int, int, int) */
288 char *pretty_key(char *key, int key_len, int uctitle, int xhyphen)
289 {
290 if (key && key_len) {
291 int i, wasalpha;
292 if (wasalpha = isalpha(key[0])) {
293 key[0] = uctitle ? toupper(key[0]) : tolower(key[0]);
294 }
295 for (i = 1; i < key_len; i++) {
296 if (isalpha(key[i])) {
297 key[i] = ((!wasalpha) && uctitle) ? toupper(key[i]) : tolower(key[i]);
298 wasalpha = 1;
299 } else {
300 if (xhyphen && (key[i] == '_')) {
301 key[i] = '-';
302 }
303 wasalpha = 0;
304 }
305 }
306 }
307 return key;
308 }
309 /* }}} */
310
311 /* {{{ static STATUS http_ob_stack_get(php_ob_buffer *, php_ob_buffer **) */
312 static STATUS http_ob_stack_get(php_ob_buffer *o, php_ob_buffer **s)
313 {
314 static int i = 0;
315 php_ob_buffer *b = emalloc(sizeof(php_ob_buffer));
316 b->handler_name = estrdup(o->handler_name);
317 b->buffer = estrndup(o->buffer, o->text_length);
318 b->text_length = o->text_length;
319 b->chunk_size = o->chunk_size;
320 b->erase = o->erase;
321 s[i++] = b;
322 return SUCCESS;
323 }
324 /* }}} */
325
326 /* }}} internals */
327
328 /* {{{ public API */
329
330 /* {{{ char *http_date(time_t) */
331 PHP_HTTP_API char *_http_date(time_t t TSRMLS_DC)
332 {
333 struct tm *gmtime, tmbuf;
334
335 if (gmtime = php_gmtime_r(&t, &tmbuf)) {
336 char *date = ecalloc(1, 31);
337 snprintf(date, 30,
338 "%s, %02d %s %04d %02d:%02d:%02d GMT",
339 days[gmtime->tm_wday], gmtime->tm_mday,
340 months[gmtime->tm_mon], gmtime->tm_year + 1900,
341 gmtime->tm_hour, gmtime->tm_min, gmtime->tm_sec
342 );
343 return date;
344 }
345
346 return NULL;
347 }
348 /* }}} */
349
350 /* {{{ time_t http_parse_date(char *)
351 Originally by libcurl, Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al. */
352 PHP_HTTP_API time_t _http_parse_date(const char *date)
353 {
354 time_t t = 0;
355 int tz_offset = -1, year = -1, month = -1, monthday = -1, weekday = -1,
356 hours = -1, minutes = -1, seconds = -1;
357 struct tm tm;
358 enum assume_next dignext = DATE_MDAY;
359 const char *indate = date;
360
361 int found = 0, part = 0; /* max 6 parts */
362
363 while (*date && (part < 6)) {
364 int found = 0;
365
366 while (*date && !isalnum(*date)) {
367 date++;
368 }
369
370 if (isalpha(*date)) {
371 /* a name coming up */
372 char buf[32] = "";
373 size_t len;
374 sscanf(date, "%31[A-Za-z]", buf);
375 len = strlen(buf);
376
377 if (weekday == -1) {
378 weekday = check_day(buf, len);
379 if (weekday != -1) {
380 found = 1;
381 }
382 }
383
384 if (!found && (month == -1)) {
385 month = check_month(buf);
386 if (month != -1) {
387 found = 1;
388 }
389 }
390
391 if (!found && (tz_offset == -1)) {
392 /* this just must be a time zone string */
393 tz_offset = check_tzone(buf);
394 if (tz_offset != -1) {
395 found = 1;
396 }
397 }
398
399 if (!found) {
400 return -1; /* bad string */
401 }
402 date += len;
403 }
404 else if (isdigit(*date)) {
405 /* a digit */
406 int val;
407 char *end;
408 if ((seconds == -1) &&
409 (3 == sscanf(date, "%02d:%02d:%02d", &hours, &minutes, &seconds))) {
410 /* time stamp! */
411 date += 8;
412 found = 1;
413 }
414 else {
415 val = (int) strtol(date, &end, 10);
416
417 if ((tz_offset == -1) && ((end - date) == 4) && (val < 1300) &&
418 (indate < date) && ((date[-1] == '+' || date[-1] == '-'))) {
419 /* four digits and a value less than 1300 and it is preceeded with
420 a plus or minus. This is a time zone indication. */
421 found = 1;
422 tz_offset = (val / 100 * 60 + val % 100) * 60;
423
424 /* the + and - prefix indicates the local time compared to GMT,
425 this we need ther reversed math to get what we want */
426 tz_offset = date[-1] == '+' ? -tz_offset : tz_offset;
427 }
428
429 if (((end - date) == 8) && (year == -1) && (month == -1) && (monthday == -1)) {
430 /* 8 digits, no year, month or day yet. This is YYYYMMDD */
431 found = 1;
432 year = val / 10000;
433 month = (val % 10000) / 100 - 1; /* month is 0 - 11 */
434 monthday = val % 100;
435 }
436
437 if (!found && (dignext == DATE_MDAY) && (monthday == -1)) {
438 if ((val > 0) && (val < 32)) {
439 monthday = val;
440 found = 1;
441 }
442 dignext = DATE_YEAR;
443 }
444
445 if (!found && (dignext == DATE_YEAR) && (year == -1)) {
446 year = val;
447 found = 1;
448 if (year < 1900) {
449 year += year > 70 ? 1900 : 2000;
450 }
451 if(monthday == -1) {
452 dignext = DATE_MDAY;
453 }
454 }
455
456 if (!found) {
457 return -1;
458 }
459
460 date = end;
461 }
462 }
463
464 part++;
465 }
466
467 if (-1 == seconds) {
468 seconds = minutes = hours = 0; /* no time, make it zero */
469 }
470
471 if ((-1 == monthday) || (-1 == month) || (-1 == year)) {
472 /* lacks vital info, fail */
473 return -1;
474 }
475
476 if (sizeof(time_t) < 5) {
477 /* 32 bit time_t can only hold dates to the beginning of 2038 */
478 if (year > 2037) {
479 return 0x7fffffff;
480 }
481 }
482
483 tm.tm_sec = seconds;
484 tm.tm_min = minutes;
485 tm.tm_hour = hours;
486 tm.tm_mday = monthday;
487 tm.tm_mon = month;
488 tm.tm_year = year - 1900;
489 tm.tm_wday = 0;
490 tm.tm_yday = 0;
491 tm.tm_isdst = 0;
492
493 t = mktime(&tm);
494
495 /* time zone adjust */
496 {
497 struct tm *gmt, keeptime2;
498 long delta;
499 time_t t2;
500
501 if(!(gmt = php_gmtime_r(&t, &keeptime2))) {
502 return -1; /* illegal date/time */
503 }
504
505 t2 = mktime(gmt);
506
507 /* Add the time zone diff (between the given timezone and GMT) and the
508 diff between the local time zone and GMT. */
509 delta = (tz_offset != -1 ? tz_offset : 0) + (t - t2);
510
511 if((delta > 0) && (t + delta < t)) {
512 return -1; /* time_t overflow */
513 }
514
515 t += delta;
516 }
517
518 return t;
519 }
520 /* }}} */
521
522 /* {{{ char *http_etag(void *, size_t, http_send_mode) */
523 PHP_HTTP_API char *_http_etag(const void *data_ptr, const size_t data_len,
524 const http_send_mode data_mode TSRMLS_DC)
525 {
526 char ssb_buf[128] = {0};
527 unsigned char digest[16];
528 PHP_MD5_CTX ctx;
529 char *new_etag = ecalloc(1, 33);
530
531 PHP_MD5Init(&ctx);
532
533 switch (data_mode)
534 {
535 case SEND_DATA:
536 PHP_MD5Update(&ctx, data_ptr, data_len);
537 break;
538
539 case SEND_RSRC:
540 if (!HTTP_G(ssb).sb.st_ino) {
541 if (php_stream_stat((php_stream *) data_ptr, &HTTP_G(ssb))) {
542 return NULL;
543 }
544 }
545 snprintf(ssb_buf, 127, "%ld=%ld=%ld",
546 HTTP_G(ssb).sb.st_mtime,
547 HTTP_G(ssb).sb.st_ino,
548 HTTP_G(ssb).sb.st_size
549 );
550 PHP_MD5Update(&ctx, ssb_buf, strlen(ssb_buf));
551 break;
552
553 default:
554 efree(new_etag);
555 return NULL;
556 break;
557 }
558
559 PHP_MD5Final(digest, &ctx);
560 make_digest(new_etag, digest);
561
562 return new_etag;
563 }
564 /* }}} */
565
566 /* {{{ time_t http_lmod(void *, http_send_mode) */
567 PHP_HTTP_API time_t _http_lmod(const void *data_ptr, const http_send_mode data_mode TSRMLS_DC)
568 {
569 switch (data_mode)
570 {
571 case SEND_DATA:
572 {
573 return time(NULL);
574 }
575
576 case SEND_RSRC:
577 {
578 if (!HTTP_G(ssb).sb.st_mtime) {
579 if (php_stream_stat((php_stream *) data_ptr, &HTTP_G(ssb))) {
580 return 0;
581 }
582 }
583 return HTTP_G(ssb).sb.st_mtime;
584 }
585
586 default:
587 {
588 if (!HTTP_G(ssb).sb.st_mtime) {
589 if(php_stream_stat_path(Z_STRVAL_P((zval *) data_ptr), &HTTP_G(ssb))) {
590 return 0;
591 }
592 }
593 return HTTP_G(ssb).sb.st_mtime;
594 }
595 }
596 }
597 /* }}} */
598
599 /* {{{ STATUS http_send_status_header(int, char *) */
600 PHP_HTTP_API STATUS _http_send_status_header(const int status, const char *header TSRMLS_DC)
601 {
602 sapi_header_line h = {(char *) header, strlen(header), status};
603 return sapi_header_op(SAPI_HEADER_REPLACE, &h TSRMLS_CC);
604 }
605 /* }}} */
606
607 /* {{{ zval *http_get_server_var_ex(char *, size_t) */
608 PHP_HTTP_API zval *_http_get_server_var_ex(const char *key, size_t key_size, zend_bool check TSRMLS_DC)
609 {
610 zval **var;
611 if (SUCCESS == zend_hash_find(HTTP_SERVER_VARS, (char *) key, key_size, (void **) &var)) {
612 if (check) {
613 return Z_STRVAL_PP(var) && Z_STRLEN_PP(var) ? *var : NULL;
614 } else {
615 return *var;
616 }
617 }
618 return NULL;
619 }
620 /* }}} */
621
622 /* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
623 PHP_HTTP_API void _http_ob_etaghandler(char *output, uint output_len,
624 char **handled_output, uint *handled_output_len, int mode TSRMLS_DC)
625 {
626 char etag[33] = { 0 };
627 unsigned char digest[16];
628
629 if (mode & PHP_OUTPUT_HANDLER_START) {
630 PHP_MD5Init(&HTTP_G(etag_md5));
631 }
632
633 PHP_MD5Update(&HTTP_G(etag_md5), output, output_len);
634
635 if (mode & PHP_OUTPUT_HANDLER_END) {
636 PHP_MD5Final(digest, &HTTP_G(etag_md5));
637
638 /* just do that if desired */
639 if (HTTP_G(etag_started)) {
640 make_digest(etag, digest);
641
642 if (http_etag_match("HTTP_IF_NONE_MATCH", etag)) {
643 http_send_status(304);
644 zend_bailout();
645 } else {
646 http_send_etag(etag, 32);
647 }
648 }
649 }
650
651 *handled_output_len = output_len;
652 *handled_output = estrndup(output, output_len);
653 }
654 /* }}} */
655
656 /* {{{ STATUS http_start_ob_handler(php_output_handler_func_t, char *, uint, zend_bool) */
657 PHP_HTTP_API STATUS _http_start_ob_handler(php_output_handler_func_t handler_func,
658 char *handler_name, uint chunk_size, zend_bool erase TSRMLS_DC)
659 {
660 php_ob_buffer **stack;
661 int count, i;
662
663 if (count = OG(ob_nesting_level)) {
664 stack = ecalloc(count, sizeof(php_ob_buffer *));
665
666 if (count > 1) {
667 zend_stack_apply_with_argument(&OG(ob_buffers), ZEND_STACK_APPLY_BOTTOMUP,
668 (int (*)(void *elem, void *)) http_ob_stack_get, stack);
669 }
670
671 if (count > 0) {
672 http_ob_stack_get(&OG(active_ob_buffer), stack);
673 }
674
675 while (OG(ob_nesting_level)) {
676 php_end_ob_buffer(0, 0 TSRMLS_CC);
677 }
678 }
679
680 php_ob_set_internal_handler(handler_func, chunk_size, handler_name, erase TSRMLS_CC);
681
682 for (i = 0; i < count; i++) {
683 php_ob_buffer *s = stack[i];
684 if (strcmp(s->handler_name, "default output handler")) {
685 php_start_ob_buffer_named(s->handler_name, s->chunk_size, s->erase TSRMLS_CC);
686 }
687 php_body_write(s->buffer, s->text_length TSRMLS_CC);
688 efree(s->handler_name);
689 efree(s->buffer);
690 efree(s);
691 }
692 if (count) {
693 efree(stack);
694 }
695
696 return SUCCESS;
697 }
698 /* }}} */
699
700 /* {{{ int http_modified_match(char *, time_t) */
701 PHP_HTTP_API int _http_modified_match_ex(const char *entry, const time_t t,
702 const int enforce_presence TSRMLS_DC)
703 {
704 int retval;
705 zval *zmodified;
706 char *modified, *chr_ptr;
707
708 HTTP_GSC(zmodified, entry, !enforce_presence);
709
710 modified = estrndup(Z_STRVAL_P(zmodified), Z_STRLEN_P(zmodified));
711 if (chr_ptr = strrchr(modified, ';')) {
712 chr_ptr = 0;
713 }
714 retval = (t <= http_parse_date(modified));
715 efree(modified);
716 return retval;
717 }
718 /* }}} */
719
720 /* {{{ int http_etag_match(char *, char *) */
721 PHP_HTTP_API int _http_etag_match_ex(const char *entry, const char *etag,
722 const int enforce_presence TSRMLS_DC)
723 {
724 zval *zetag;
725 char *quoted_etag;
726 STATUS result;
727
728 HTTP_GSC(zetag, entry, !enforce_presence);
729
730 if (NULL != strchr(Z_STRVAL_P(zetag), '*')) {
731 return 1;
732 }
733
734 quoted_etag = (char *) emalloc(strlen(etag) + 3);
735 sprintf(quoted_etag, "\"%s\"", etag);
736
737 if (!strchr(Z_STRVAL_P(zetag), ',')) {
738 result = !strcmp(Z_STRVAL_P(zetag), quoted_etag);
739 } else {
740 result = (NULL != strstr(Z_STRVAL_P(zetag), quoted_etag));
741 }
742 efree(quoted_etag);
743 return result;
744 }
745 /* }}} */
746
747 /* {{{ STATUS http_send_last_modified(int) */
748 PHP_HTTP_API STATUS _http_send_last_modified(const time_t t TSRMLS_DC)
749 {
750 char *date = NULL;
751 if (date = http_date(t)) {
752 char modified[96] = "Last-Modified: ";
753 strcat(modified, date);
754 efree(date);
755
756 /* remember */
757 HTTP_G(lmod) = t;
758
759 return http_send_header(modified);
760 }
761 return FAILURE;
762 }
763 /* }}} */
764
765 /* {{{ static STATUS http_send_etag(char *, int) */
766 PHP_HTTP_API STATUS _http_send_etag(const char *etag,
767 const int etag_len TSRMLS_DC)
768 {
769 STATUS status;
770 char *etag_header;
771
772 if (!etag_len){
773 php_error_docref(NULL TSRMLS_CC,E_ERROR,
774 "Attempt to send empty ETag (previous: %s)\n", HTTP_G(etag));
775 return FAILURE;
776 }
777
778 /* remember */
779 if (HTTP_G(etag)) {
780 efree(HTTP_G(etag));
781 }
782 HTTP_G(etag) = estrdup(etag);
783
784 etag_header = ecalloc(1, sizeof("ETag: \"\"") + etag_len);
785 sprintf(etag_header, "ETag: \"%s\"", etag);
786 if (SUCCESS != (status = http_send_header(etag_header))) {
787 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't send '%s' header", etag_header);
788 }
789 efree(etag_header);
790 return status;
791 }
792 /* }}} */
793
794 /* {{{ STATUS http_send_cache_control(char *, size_t) */
795 PHP_HTTP_API STATUS _http_send_cache_control(const char *cache_control,
796 const size_t cc_len TSRMLS_DC)
797 {
798 STATUS status;
799 char *cc_header = ecalloc(1, sizeof("Cache-Control: ") + cc_len);
800
801 sprintf(cc_header, "Cache-Control: %s", cache_control);
802 if (SUCCESS != (status = http_send_header(cc_header))) {
803 php_error_docref(NULL TSRMLS_CC, E_NOTICE,
804 "Could not send '%s' header", cc_header);
805 }
806 efree(cc_header);
807 return status;
808 }
809 /* }}} */
810
811 /* {{{ STATUS http_send_content_type(char *, size_t) */
812 PHP_HTTP_API STATUS _http_send_content_type(const char *content_type,
813 const size_t ct_len TSRMLS_DC)
814 {
815 STATUS status;
816 char *ct_header;
817
818 if (!strchr(content_type, '/')) {
819 php_error_docref(NULL TSRMLS_CC, E_WARNING,
820 "Content-Type '%s' doesn't seem to consist of a primary and a secondary part",
821 content_type);
822 return FAILURE;
823 }
824
825 /* remember for multiple ranges */
826 if (HTTP_G(ctype)) {
827 efree(HTTP_G(ctype));
828 }
829 HTTP_G(ctype) = estrndup(content_type, ct_len);
830
831 ct_header = ecalloc(1, sizeof("Content-Type: ") + ct_len);
832 sprintf(ct_header, "Content-Type: %s", content_type);
833
834 if (SUCCESS != (status = http_send_header(ct_header))) {
835 php_error_docref(NULL TSRMLS_CC, E_WARNING,
836 "Couldn't send '%s' header", ct_header);
837 }
838 efree(ct_header);
839 return status;
840 }
841 /* }}} */
842
843 /* {{{ STATUS http_send_content_disposition(char *, size_t, zend_bool) */
844 PHP_HTTP_API STATUS _http_send_content_disposition(const char *filename,
845 const size_t f_len, const int send_inline TSRMLS_DC)
846 {
847 STATUS status;
848 char *cd_header;
849
850 if (send_inline) {
851 cd_header = ecalloc(1, sizeof("Content-Disposition: inline; filename=\"\"") + f_len);
852 sprintf(cd_header, "Content-Disposition: inline; filename=\"%s\"", filename);
853 } else {
854 cd_header = ecalloc(1, sizeof("Content-Disposition: attachment; filename=\"\"") + f_len);
855 sprintf(cd_header, "Content-Disposition: attachment; filename=\"%s\"", filename);
856 }
857
858 if (SUCCESS != (status = http_send_header(cd_header))) {
859 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't send '%s' header", cd_header);
860 }
861 efree(cd_header);
862 return status;
863 }
864 /* }}} */
865
866 /* {{{ STATUS http_cache_last_modified(time_t, time_t, char *, size_t) */
867 PHP_HTTP_API STATUS _http_cache_last_modified(const time_t last_modified,
868 const time_t send_modified, const char *cache_control, const size_t cc_len TSRMLS_DC)
869 {
870 if (cc_len) {
871 http_send_cache_control(cache_control, cc_len);
872 }
873
874 if (http_modified_match("HTTP_IF_MODIFIED_SINCE", last_modified)) {
875 if (SUCCESS == http_send_status(304)) {
876 zend_bailout();
877 } else {
878 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not send 304 Not Modified");
879 return FAILURE;
880 }
881 }
882 return http_send_last_modified(send_modified);
883 }
884 /* }}} */
885
886 /* {{{ STATUS http_cache_etag(char *, size_t, char *, size_t) */
887 PHP_HTTP_API STATUS _http_cache_etag(const char *etag, const size_t etag_len,
888 const char *cache_control, const size_t cc_len TSRMLS_DC)
889 {
890 if (cc_len) {
891 http_send_cache_control(cache_control, cc_len);
892 }
893
894 if (etag_len) {
895 http_send_etag(etag, etag_len);
896 if (http_etag_match("HTTP_IF_NONE_MATCH", etag)) {
897 if (SUCCESS == http_send_status(304)) {
898 zend_bailout();
899 } else {
900 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not send 304 Not Modified");
901 return FAILURE;
902 }
903 }
904 }
905
906 /* if no etag is given and we didn't already start ob_etaghandler -- start it */
907 if (!HTTP_G(etag_started)) {
908 if (SUCCESS == http_start_ob_handler(_http_ob_etaghandler, "ob_etaghandler", 4096, 1)) {
909 HTTP_G(etag_started) = 1;
910 return SUCCESS;
911 } else {
912 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not start ob_etaghandler");
913 return FAILURE;
914 }
915 }
916 return SUCCESS;
917 }
918 /* }}} */
919
920 /* {{{ char *http_absolute_uri(char *) */
921 PHP_HTTP_API char *_http_absolute_uri_ex(
922 const char *url, size_t url_len,
923 const char *proto, size_t proto_len,
924 const char *host, size_t host_len,
925 unsigned port TSRMLS_DC)
926 {
927 #if defined(PHP_WIN32) || defined(HAVE_NETDB_H)
928 struct servent *se;
929 #endif
930 php_url *purl, furl = {NULL};
931 size_t full_len = 0;
932 zval *zhost = NULL;
933 char *scheme = NULL, *URL = ecalloc(1, HTTP_URI_MAXLEN + 1);
934
935 if ((!url || !url_len) && (
936 (!(url = SG(request_info).request_uri)) ||
937 (!(url_len = strlen(SG(request_info).request_uri))))) {
938 php_error_docref(NULL TSRMLS_CC, E_WARNING,
939 "Cannot build an absolute URI if supplied URL and REQUEST_URI is empty");
940 return NULL;
941 }
942
943 if (!(purl = php_url_parse((char *) url))) {
944 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not parse supplied URL");
945 return NULL;
946 }
947
948 furl.user = purl->user;
949 furl.pass = purl->pass;
950 furl.path = purl->path;
951 furl.query = purl->query;
952 furl.fragment = purl->fragment;
953
954 if (proto && proto_len) {
955 furl.scheme = scheme = estrdup(proto);
956 } else if (purl->scheme) {
957 furl.scheme = purl->scheme;
958 #if defined(PHP_WIN32) || defined(HAVE_NETDB_H)
959 } else if (port && (se = getservbyport(port, "tcp"))) {
960 furl.scheme = (scheme = estrdup(se->s_name));
961 #endif
962 } else {
963 furl.scheme = "http";
964 }
965
966 if (port) {
967 furl.port = port;
968 } else if (purl->port) {
969 furl.port = purl->port;
970 } else if (strncmp(furl.scheme, "http", 4)) {
971 #if defined(PHP_WIN32) || defined(HAVE_NETDB_H)
972 if (se = getservbyname(furl.scheme, "tcp")) {
973 furl.port = se->s_port;
974 }
975 #endif
976 } else {
977 furl.port = (furl.scheme[4] == 's') ? 443 : 80;
978 }
979
980 if (host) {
981 furl.host = (char *) host;
982 } else if (purl->host) {
983 furl.host = purl->host;
984 } else if ( (zhost = http_get_server_var("HTTP_HOST")) ||
985 (zhost = http_get_server_var("SERVER_NAME"))) {
986 furl.host = Z_STRVAL_P(zhost);
987 } else {
988 furl.host = "localhost";
989 }
990
991 #define HTTP_URI_STRLCATS(URL, full_len, add_string) HTTP_URI_STRLCAT(URL, full_len, add_string, sizeof(add_string)-1)
992 #define HTTP_URI_STRLCATL(URL, full_len, add_string) HTTP_URI_STRLCAT(URL, full_len, add_string, strlen(add_string))
993 #define HTTP_URI_STRLCAT(URL, full_len, add_string, add_len) \
994 if ((full_len += add_len) > HTTP_URI_MAXLEN) { \
995 php_error_docref(NULL TSRMLS_CC, E_NOTICE, \
996 "Absolute URI would have exceeded max URI length (%d bytes) - " \
997 "tried to add %d bytes ('%s')", \
998 HTTP_URI_MAXLEN, add_len, add_string); \
999 if (scheme) { \
1000 efree(scheme); \
1001 } \
1002 php_url_free(purl); \
1003 return URL; \
1004 } else { \
1005 strcat(URL, add_string); \
1006 }
1007
1008 HTTP_URI_STRLCATL(URL, full_len, furl.scheme);
1009 HTTP_URI_STRLCATS(URL, full_len, "://");
1010
1011 if (furl.user) {
1012 HTTP_URI_STRLCATL(URL, full_len, furl.user);
1013 if (furl.pass) {
1014 HTTP_URI_STRLCATS(URL, full_len, ":");
1015 HTTP_URI_STRLCATL(URL, full_len, furl.pass);
1016 }
1017 HTTP_URI_STRLCATS(URL, full_len, "@");
1018 }
1019
1020 HTTP_URI_STRLCATL(URL, full_len, furl.host);
1021
1022 if ( (!strcmp(furl.scheme, "http") && (furl.port != 80)) ||
1023 (!strcmp(furl.scheme, "https") && (furl.port != 443))) {
1024 char port_string[8] = {0};
1025 snprintf(port_string, 7, ":%u", furl.port);
1026 HTTP_URI_STRLCATL(URL, full_len, port_string);
1027 }
1028
1029 if (furl.path) {
1030 if (furl.path[0] != '/') {
1031 HTTP_URI_STRLCATS(URL, full_len, "/");
1032 }
1033 HTTP_URI_STRLCATL(URL, full_len, furl.path);
1034 } else {
1035 HTTP_URI_STRLCATS(URL, full_len, "/");
1036 }
1037
1038 if (furl.query) {
1039 HTTP_URI_STRLCATS(URL, full_len, "?");
1040 HTTP_URI_STRLCATL(URL, full_len, furl.query);
1041 }
1042
1043 if (furl.fragment) {
1044 HTTP_URI_STRLCATS(URL, full_len, "#");
1045 HTTP_URI_STRLCATL(URL, full_len, furl.fragment);
1046 }
1047
1048 if (scheme) {
1049 efree(scheme);
1050 }
1051 php_url_free(purl);
1052
1053 return URL;
1054 }
1055 /* }}} */
1056
1057 /* {{{ char *http_negotiate_q(char *, HashTable *, char *) */
1058 PHP_HTTP_API char *_http_negotiate_q(const char *entry, const HashTable *supported, const char *def TSRMLS_DC)
1059 {
1060 zval *zaccept, zdelim, zarray, zentries, **zentry, **zsupp;
1061 char *q_ptr = NULL, *key = NULL;
1062 int i = 0, idx = 0;
1063 double qual;
1064
1065 HTTP_GSC(zaccept, entry, estrdup(def));
1066
1067 array_init(&zarray);
1068 array_init(&zentries);
1069
1070 Z_STRVAL(zdelim) = ",";
1071 Z_STRLEN(zdelim) = 1;
1072
1073 php_explode(&zdelim, zaccept, &zarray, -1);
1074
1075 FOREACH_HASH_VAL(Z_ARRVAL(zarray), zentry) {
1076 if (q_ptr = strrchr(Z_STRVAL_PP(zentry), ';')) {
1077 qual = strtod(q_ptr + 3, NULL);
1078 *q_ptr = 0;
1079 q_ptr = NULL;
1080 } else {
1081 qual = 1000.0 - i++;
1082 }
1083 FOREACH_HASH_VAL((HashTable *)supported, zsupp) {
1084 if (!strcasecmp(Z_STRVAL_PP(zsupp), Z_STRVAL_PP(zentry))) {
1085 add_assoc_double(&zentries, Z_STRVAL_PP(zsupp), qual);
1086 break;
1087 }
1088 }
1089 }
1090 zval_dtor(&zarray);
1091
1092 zend_hash_sort(Z_ARRVAL(zentries), zend_qsort, http_sort_q, 0 TSRMLS_CC);
1093
1094 FOREACH_HASH_KEY(Z_ARRVAL(zentries), key, idx) {
1095 if (key) {
1096 key = estrdup(key);
1097 zval_dtor(&zentries);
1098 return key;
1099 }
1100 }
1101 zval_dtor(&zentries);
1102
1103 return estrdup(def);
1104 }
1105 /* }}} */
1106
1107 /* {{{ http_range_status http_get_request_ranges(HashTable *ranges, size_t) */
1108 PHP_HTTP_API http_range_status _http_get_request_ranges(HashTable *ranges,
1109 const size_t length TSRMLS_DC)
1110 {
1111 zval *zrange;
1112 char *range, c;
1113 long begin = -1, end = -1, *ptr;
1114
1115 HTTP_GSC(zrange, "HTTP_RANGE", RANGE_NO);
1116 range = Z_STRVAL_P(zrange);
1117
1118 if (strncmp(range, "bytes=", sizeof("bytes=") - 1)) {
1119 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Range header misses bytes=");
1120 return RANGE_NO;
1121 }
1122
1123 ptr = &begin;
1124 range += sizeof("bytes=") - 1;
1125
1126 do {
1127 switch (c = *(range++))
1128 {
1129 case '0':
1130 *ptr *= 10;
1131 break;
1132
1133 case '1': case '2': case '3':
1134 case '4': case '5': case '6':
1135 case '7': case '8': case '9':
1136 /*
1137 * If the value of the pointer is already set (non-negative)
1138 * then multiply its value by ten and add the current value,
1139 * else initialise the pointers value with the current value
1140 * --
1141 * This let us recognize empty fields when validating the
1142 * ranges, i.e. a "-10" for begin and "12345" for the end
1143 * was the following range request: "Range: bytes=0-12345";
1144 * While a "-1" for begin and "12345" for the end would
1145 * have been: "Range: bytes=-12345".
1146 */
1147 if (*ptr > 0) {
1148 *ptr *= 10;
1149 *ptr += c - '0';
1150 } else {
1151 *ptr = c - '0';
1152 }
1153 break;
1154
1155 case '-':
1156 ptr = &end;
1157 break;
1158
1159 case ' ':
1160 /* IE - ignore for now */
1161 break;
1162
1163 case 0:
1164 case ',':
1165
1166 if (length) {
1167 /* validate ranges */
1168 switch (begin)
1169 {
1170 /* "0-12345" */
1171 case -10:
1172 if (length <= end) {
1173 return RANGE_ERR;
1174 }
1175 begin = 0;
1176 break;
1177
1178 /* "-12345" */
1179 case -1:
1180 if (length <= end) {
1181 return RANGE_ERR;
1182 }
1183 begin = length - end;
1184 end = length - 1;
1185 break;
1186
1187 /* "12345-(xxx)" */
1188 default:
1189 switch (end)
1190 {
1191 /* "12345-" */
1192 case -1:
1193 if (length <= begin) {
1194 return RANGE_ERR;
1195 }
1196 end = length - 1;
1197 break;
1198
1199 /* "12345-67890" */
1200 default:
1201 if ( (length <= begin) ||
1202 (length <= end) ||
1203 (end < begin)) {
1204 return RANGE_ERR;
1205 }
1206 break;
1207 }
1208 break;
1209 }
1210 }
1211 {
1212 zval *zentry;
1213 MAKE_STD_ZVAL(zentry);
1214 array_init(zentry);
1215 add_index_long(zentry, 0, begin);
1216 add_index_long(zentry, 1, end);
1217 zend_hash_next_index_insert(ranges, &zentry, sizeof(zval *), NULL);
1218
1219 begin = -1;
1220 end = -1;
1221 ptr = &begin;
1222 }
1223 break;
1224
1225 default:
1226 return RANGE_NO;
1227 break;
1228 }
1229 } while (c != 0);
1230
1231 return RANGE_OK;
1232 }
1233 /* }}} */
1234
1235 /* {{{ STATUS http_send_ranges(HashTable *, void *, size_t, http_send_mode) */
1236 PHP_HTTP_API STATUS _http_send_ranges(HashTable *ranges, const void *data, const size_t size, const http_send_mode mode TSRMLS_DC)
1237 {
1238 long **begin, **end;
1239 zval **zrange;
1240
1241 /* single range */
1242 if (zend_hash_num_elements(ranges) == 1) {
1243 char range_header[256] = {0};
1244
1245 if (SUCCESS != zend_hash_index_find(ranges, 0, (void **) &zrange) ||
1246 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 0, (void **) &begin) ||
1247 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 1, (void **) &end)) {
1248 return FAILURE;
1249 }
1250
1251 /* Send HTTP 206 Partial Content */
1252 http_send_status(206);
1253
1254 /* send content range header */
1255 snprintf(range_header, 255, "Content-Range: bytes %d-%d/%d", **begin, **end, size);
1256 http_send_header(range_header);
1257
1258 /* send requested chunk */
1259 return http_send_chunk(data, **begin, **end + 1, mode);
1260 }
1261
1262 /* multi range */
1263 else {
1264 char bound[23] = {0}, preface[1024] = {0},
1265 multi_header[68] = "Content-Type: multipart/byteranges; boundary=";
1266
1267 /* Send HTTP 206 Partial Content */
1268 http_send_status(206);
1269
1270 /* send multipart/byteranges header */
1271 snprintf(bound, 22, "--%d%0.9f", time(NULL), php_combined_lcg(TSRMLS_C));
1272 strncat(multi_header, bound + 2, 21);
1273 http_send_header(multi_header);
1274
1275 /* send each requested chunk */
1276 FOREACH_HASH_VAL(ranges, zrange) {
1277 if (SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 0, (void **) &begin) ||
1278 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 1, (void **) &end)) {
1279 break;
1280 }
1281
1282 snprintf(preface, 1023,
1283 HTTP_CRLF "%s"
1284 HTTP_CRLF "Content-Type: %s"
1285 HTTP_CRLF "Content-Range: bytes %ld-%ld/%ld"
1286 HTTP_CRLF
1287 HTTP_CRLF,
1288
1289 bound,
1290 HTTP_G(ctype) ? HTTP_G(ctype) : "application/x-octetstream",
1291 **begin,
1292 **end,
1293 size
1294 );
1295
1296 php_body_write(preface, strlen(preface) TSRMLS_CC);
1297 http_send_chunk(data, **begin, **end + 1, mode);
1298 }
1299
1300 /* write boundary once more */
1301 php_body_write(HTTP_CRLF, sizeof(HTTP_CRLF) - 1 TSRMLS_CC);
1302 php_body_write(bound, strlen(bound) TSRMLS_CC);
1303 php_body_write("--", 2 TSRMLS_CC);
1304
1305 return SUCCESS;
1306 }
1307 }
1308 /* }}} */
1309
1310 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
1311 PHP_HTTP_API STATUS _http_send(const void *data_ptr, const size_t data_size,
1312 const http_send_mode data_mode TSRMLS_DC)
1313 {
1314 HashTable ranges;
1315 http_range_status range_status;
1316 int cache_etag = 0;
1317
1318 if (!data_ptr) {
1319 return FAILURE;
1320 }
1321 if (!data_size) {
1322 return SUCCESS;
1323 }
1324
1325 /* stop on-the-fly etag generation */
1326 if (cache_etag = HTTP_G(etag_started)) {
1327 /* interrupt */
1328 HTTP_G(etag_started) = 0;
1329 /* never ever use the output to compute the ETag if http_send() is used */
1330 php_end_ob_buffers(0 TSRMLS_CC);
1331 }
1332
1333 zend_hash_init(&ranges, 0, NULL, ZVAL_PTR_DTOR, 0);
1334 range_status = http_get_request_ranges(&ranges, data_size);
1335
1336 if (range_status == RANGE_ERR) {
1337 zend_hash_destroy(&ranges);
1338 http_send_status(416);
1339 return FAILURE;
1340 }
1341
1342 /* Range Request - only send ranges if entity hasn't changed */
1343 if ( range_status == RANGE_OK &&
1344 http_etag_match_ex("HTTP_IF_MATCH", HTTP_G(etag), 0) &&
1345 http_modified_match_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G(lmod), 0)) {
1346 STATUS result = http_send_ranges(&ranges, data_ptr, data_size, data_mode);
1347 zend_hash_destroy(&ranges);
1348 return result;
1349 }
1350
1351 zend_hash_destroy(&ranges);
1352
1353 /* send 304 Not Modified if etag matches */
1354 if (cache_etag) {
1355 char *etag = NULL;
1356 int etag_match = 0;
1357
1358 if (!(etag = http_etag(data_ptr, data_size, data_mode))) {
1359 return FAILURE;
1360 }
1361
1362 http_send_etag(etag, 32);
1363 etag_match = http_etag_match("HTTP_IF_NONE_MATCH", etag);
1364 efree(etag);
1365
1366 if (etag_match) {
1367 return http_send_status(304);
1368 }
1369 }
1370
1371 /* send 304 Not Modified if last modified matches */
1372 if (http_modified_match("HTTP_IF_MODIFIED_SINCE", HTTP_G(lmod))) {
1373 return http_send_status(304);
1374 }
1375
1376 /* send full entity */
1377 return http_send_chunk(data_ptr, 0, data_size, data_mode);
1378 }
1379 /* }}} */
1380
1381 /* {{{ STATUS http_send_stream(php_stream *) */
1382 PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file,
1383 zend_bool close_stream TSRMLS_DC)
1384 {
1385 STATUS status;
1386
1387 if ((!file) || php_stream_stat(file, &HTTP_G(ssb))) {
1388 return FAILURE;
1389 }
1390
1391 status = http_send(file, HTTP_G(ssb).sb.st_size, SEND_RSRC);
1392
1393 if (close_stream) {
1394 php_stream_close(file);
1395 }
1396
1397 return status;
1398 }
1399 /* }}} */
1400
1401 /* {{{ STATUS http_chunked_decode(char *, size_t, char **, size_t *) */
1402 PHP_HTTP_API STATUS _http_chunked_decode(const char *encoded,
1403 const size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
1404 {
1405 const char *e_ptr;
1406 char *d_ptr;
1407
1408 *decoded_len = 0;
1409 *decoded = ecalloc(1, encoded_len);
1410 d_ptr = *decoded;
1411 e_ptr = encoded;
1412
1413 while (((e_ptr - encoded) - encoded_len) > 0) {
1414 char hex_len[9] = {0};
1415 size_t chunk_len = 0;
1416 int i = 0;
1417
1418 /* read in chunk size */
1419 while (isxdigit(*e_ptr)) {
1420 if (i == 9) {
1421 php_error_docref(NULL TSRMLS_CC, E_WARNING,
1422 "Chunk size is too long: 0x%s...", hex_len);
1423 efree(*decoded);
1424 return FAILURE;
1425 }
1426 hex_len[i++] = *e_ptr++;
1427 }
1428
1429 /* reached the end */
1430 if (!strcmp(hex_len, "0")) {
1431 break;
1432 }
1433
1434 /* new line */
1435 if (strncmp(e_ptr, HTTP_CRLF, 2)) {
1436 php_error_docref(NULL TSRMLS_CC, E_WARNING,
1437 "Invalid character (expected 0x0D 0x0A; got: %x %x)",
1438 *e_ptr, *(e_ptr + 1));
1439 efree(*decoded);
1440 return FAILURE;
1441 }
1442
1443 /* hex to long */
1444 {
1445 char *error = NULL;
1446 chunk_len = strtol(hex_len, &error, 16);
1447 if (error == hex_len) {
1448 php_error_docref(NULL TSRMLS_CC, E_WARNING,
1449 "Invalid chunk size string: '%s'", hex_len);
1450 efree(*decoded);
1451 return FAILURE;
1452 }
1453 }
1454
1455 memcpy(d_ptr, e_ptr += 2, chunk_len);
1456 d_ptr += chunk_len;
1457 e_ptr += chunk_len + 2;
1458 *decoded_len += chunk_len;
1459 }
1460
1461 return SUCCESS;
1462 }
1463 /* }}} */
1464
1465 /* {{{ STATUS http_split_response(zval *, zval *, zval *) */
1466 PHP_HTTP_API STATUS _http_split_response(zval *response, zval *headers, zval *body TSRMLS_DC)
1467 {
1468 char *b = NULL;
1469 size_t l = 0;
1470 STATUS status = http_split_response_ex(Z_STRVAL_P(response), Z_STRLEN_P(response), Z_ARRVAL_P(headers), &b, &l);
1471 ZVAL_STRINGL(body, b, l, 0);
1472 return status;
1473 }
1474 /* }}} */
1475
1476 /* {{{ STATUS http_split_response(char *, size_t, HashTable *, char **, size_t *) */
1477 PHP_HTTP_API STATUS _http_split_response_ex(char *response,
1478 size_t response_len, HashTable *headers, char **body, size_t *body_len TSRMLS_DC)
1479 {
1480 char *header = response, *real_body = NULL;
1481
1482 while (0 < (response_len - (response - header + 4))) {
1483 if ( (*response++ == '\r') &&
1484 (*response++ == '\n') &&
1485 (*response++ == '\r') &&
1486 (*response++ == '\n')) {
1487 real_body = response;
1488 break;
1489 }
1490 }
1491
1492 if (real_body && (*body_len = (response_len - (real_body - header)))) {
1493 *body = ecalloc(1, *body_len + 1);
1494 memcpy(*body, real_body, *body_len);
1495 }
1496
1497 return http_parse_headers_ex(header, real_body ? response_len - *body_len : response_len, headers, 1);
1498 }
1499 /* }}} */
1500
1501 /* {{{ STATUS http_parse_headers(char *, long, zval *) */
1502 PHP_HTTP_API STATUS _http_parse_headers_ex(char *header, int header_len,
1503 HashTable *headers, zend_bool prettify TSRMLS_DC)
1504 {
1505 char *colon = NULL, *line = NULL, *begin = header;
1506 zval array;
1507
1508 Z_ARRVAL(array) = headers;
1509
1510 if (header_len < 2) {
1511 return FAILURE;
1512 }
1513
1514 /* status code */
1515 if (!strncmp(header, "HTTP/1.", 7)) {
1516 char *end = strstr(header, HTTP_CRLF);
1517 add_assoc_stringl(&array, "Status",
1518 header + sizeof("HTTP/1.x ") - 1,
1519 end - (header + sizeof("HTTP/1.x ") - 1), 1);
1520 header = end + 2;
1521 }
1522
1523 line = header;
1524
1525 while (header_len >= (line - begin)) {
1526 int value_len = 0;
1527
1528 switch (*line++)
1529 {
1530 case 0:
1531 --value_len; /* we don't have CR so value length is one char less */
1532 case '\n':
1533 if (colon && ((!(*line - 1)) || ((*line != ' ') && (*line != '\t')))) {
1534
1535 /* skip empty key */
1536 if (header != colon) {
1537 char *key = estrndup(header, colon - header);
1538
1539 if (prettify) {
1540 key = pretty_key(key, colon - header, 1, 1);
1541 }
1542
1543 value_len += line - colon - 1;
1544
1545 /* skip leading ws */
1546 while (isspace(*(++colon))) --value_len;
1547 /* skip trailing ws */
1548 while (isspace(colon[value_len - 1])) --value_len;
1549
1550 if (value_len < 1) {
1551 /* hm, empty header? */
1552 add_assoc_stringl(&array, key, "", 0, 1);
1553 } else {
1554 add_assoc_stringl(&array, key, colon, value_len, 1);
1555 }
1556 efree(key);
1557 }
1558
1559 colon = NULL;
1560 value_len = 0;
1561 header += line - header;
1562 }
1563 break;
1564
1565 case ':':
1566 if (!colon) {
1567 colon = line - 1;
1568 }
1569 break;
1570 }
1571 }
1572 return SUCCESS;
1573 }
1574 /* }}} */
1575
1576 /* {{{ void http_get_request_headers_ex(HashTable *, zend_bool) */
1577 PHP_HTTP_API void _http_get_request_headers_ex(HashTable *headers, zend_bool prettify TSRMLS_DC)
1578 {
1579 char *key = NULL;
1580 long idx = 0;
1581 zval array;
1582
1583 Z_ARRVAL(array) = headers;
1584
1585 FOREACH_HASH_KEY(HTTP_SERVER_VARS, key, idx) {
1586 if (key && !strncmp(key, "HTTP_", 5)) {
1587 zval **header;
1588
1589 key += 5;
1590 if (prettify) {
1591 key = pretty_key(key, strlen(key), 1, 1);
1592 }
1593
1594 zend_hash_get_current_data(HTTP_SERVER_VARS, (void **) &header);
1595 add_assoc_stringl(&array, key, Z_STRVAL_PP(header), Z_STRLEN_PP(header), 1);
1596 key = NULL;
1597 }
1598 }
1599 }
1600 /* }}} */
1601
1602 /* {{{ STATUS http_urlencode_hash_ex(HashTable *, int, char **, size_t *) */
1603 PHP_HTTP_API STATUS _http_urlencode_hash_ex(HashTable *hash, int override_argsep,
1604 char *pre_encoded_data, size_t pre_encoded_len,
1605 char **encoded_data, size_t *encoded_len TSRMLS_DC)
1606 {
1607 smart_str qstr = {0};
1608
1609 if (override_argsep) {
1610 HTTP_URL_ARGSEP_OVERRIDE;
1611 }
1612
1613 if (pre_encoded_len && pre_encoded_data) {
1614 smart_str_appendl(&qstr, pre_encoded_data, pre_encoded_len);
1615 }
1616
1617 if (SUCCESS != php_url_encode_hash_ex(hash, &qstr, NULL, 0, NULL, 0, NULL, 0, NULL TSRMLS_CC)) {
1618 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't encode query data");
1619 if (qstr.c) {
1620 efree(qstr.c);
1621 }
1622 if (override_argsep) {
1623 HTTP_URL_ARGSEP_RESTORE;
1624 }
1625 return FAILURE;
1626 }
1627
1628 if (override_argsep) {
1629 HTTP_URL_ARGSEP_RESTORE;
1630 }
1631
1632 smart_str_0(&qstr);
1633
1634 *encoded_data = qstr.c;
1635 if (encoded_len) {
1636 *encoded_len = qstr.len;
1637 }
1638
1639 return SUCCESS;
1640 }
1641 /* }}} */
1642
1643 /* {{{ STATUS http_auth_header(char *, char*) */
1644 PHP_HTTP_API STATUS _http_auth_header(const char *type, const char *realm TSRMLS_DC)
1645 {
1646 char realm_header[1024] = {0};
1647 snprintf(realm_header, 1023, "WWW-Authenticate: %s realm=\"%s\"", type, realm);
1648 return http_send_status_header(401, realm_header);
1649 }
1650 /* }}} */
1651
1652 /* {{{ STATUS http_auth_credentials(char **, char **) */
1653 PHP_HTTP_API STATUS _http_auth_credentials(char **user, char **pass TSRMLS_DC)
1654 {
1655 if (strncmp(sapi_module.name, "isapi", 5)) {
1656 zval *zuser, *zpass;
1657
1658 HTTP_GSC(zuser, "PHP_AUTH_USER", FAILURE);
1659 HTTP_GSC(zpass, "PHP_AUTH_PW", FAILURE);
1660
1661 *user = estrndup(Z_STRVAL_P(zuser), Z_STRLEN_P(zuser));
1662 *pass = estrndup(Z_STRVAL_P(zpass), Z_STRLEN_P(zpass));
1663
1664 return SUCCESS;
1665 } else {
1666 zval *zauth = NULL;
1667 HTTP_GSC(zauth, "HTTP_AUTHORIZATION", FAILURE);
1668 {
1669 char *decoded, *colon;
1670 int decoded_len;
1671 decoded = php_base64_decode(Z_STRVAL_P(zauth), Z_STRLEN_P(zauth),
1672 &decoded_len);
1673
1674 if (colon = strchr(decoded + 6, ':')) {
1675 *user = estrndup(decoded + 6, colon - decoded - 6);
1676 *pass = estrndup(colon + 1, decoded + decoded_len - colon - 6 - 1);
1677
1678 return SUCCESS;
1679 } else {
1680 return FAILURE;
1681 }
1682 }
1683 }
1684 }
1685 /* }}} */
1686
1687 #ifndef ZEND_ENGINE_2
1688 /* {{{ php_url_encode_hash
1689 Author: Sara Golemon <pollita@php.net> */
1690 PHP_HTTP_API STATUS php_url_encode_hash_ex(HashTable *ht, smart_str *formstr,
1691 const char *num_prefix, int num_prefix_len,
1692 const char *key_prefix, int key_prefix_len,
1693 const char *key_suffix, int key_suffix_len,
1694 zval *type TSRMLS_DC)
1695 {
1696 char *arg_sep = NULL, *key = NULL, *ekey, *newprefix, *p;
1697 int arg_sep_len, key_len, ekey_len, key_type, newprefix_len;
1698 ulong idx;
1699 zval **zdata = NULL, *copyzval;
1700
1701 if (!ht) {
1702 return FAILURE;
1703 }
1704
1705 if (ht->nApplyCount > 0) {
1706 /* Prevent recursion */
1707 return SUCCESS;
1708 }
1709
1710 arg_sep = INI_STR("arg_separator.output");
1711 if (!arg_sep || !strlen(arg_sep)) {
1712 arg_sep = HTTP_URL_ARGSEP_DEFAULT;
1713 }
1714 arg_sep_len = strlen(arg_sep);
1715
1716 for (zend_hash_internal_pointer_reset(ht);
1717 (key_type = zend_hash_get_current_key_ex(ht, &key, &key_len, &idx, 0, NULL)) != HASH_KEY_NON_EXISTANT;
1718 zend_hash_move_forward(ht)
1719 ) {
1720 if (key_type == HASH_KEY_IS_STRING && key_len && key[key_len-1] == '\0') {
1721 /* We don't want that trailing NULL */
1722 key_len -= 1;
1723 }
1724
1725 #ifdef ZEND_ENGINE_2
1726 /* handling for private & protected object properties */
1727 if (key && *key == '\0' && type != NULL) {
1728 char *tmp;
1729
1730 zend_object *zobj = zend_objects_get_address(type TSRMLS_CC);
1731 if (zend_check_property_access(zobj, key TSRMLS_CC) != SUCCESS) {
1732 /* private or protected property access outside of the class */
1733 continue;
1734 }
1735 zend_unmangle_property_name(key, &tmp, &key);
1736 key_len = strlen(key);
1737 }
1738 #endif
1739
1740 if (zend_hash_get_current_data_ex(ht, (void **)&zdata, NULL) == FAILURE || !zdata || !(*zdata)) {
1741 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error traversing form data array.");
1742 return FAILURE;
1743 }
1744 if (Z_TYPE_PP(zdata) == IS_ARRAY || Z_TYPE_PP(zdata) == IS_OBJECT) {
1745 if (key_type == HASH_KEY_IS_STRING) {
1746 ekey = php_url_encode(key, key_len, &ekey_len);
1747 newprefix_len = key_suffix_len + ekey_len + key_prefix_len + 1;
1748 newprefix = emalloc(newprefix_len + 1);
1749 p = newprefix;
1750
1751 if (key_prefix) {
1752 memcpy(p, key_prefix, key_prefix_len);
1753 p += key_prefix_len;
1754 }
1755
1756 memcpy(p, ekey, ekey_len);
1757 p += ekey_len;
1758 efree(ekey);
1759
1760 if (key_suffix) {
1761 memcpy(p, key_suffix, key_suffix_len);
1762 p += key_suffix_len;
1763 }
1764
1765 *(p++) = '[';
1766 *p = '\0';
1767 } else {
1768 /* Is an integer key */
1769 ekey_len = spprintf(&ekey, 12, "%ld", idx);
1770 newprefix_len = key_prefix_len + num_prefix_len + ekey_len + key_suffix_len + 1;
1771 newprefix = emalloc(newprefix_len + 1);
1772 p = newprefix;
1773
1774 if (key_prefix) {
1775 memcpy(p, key_prefix, key_prefix_len);
1776 p += key_prefix_len;
1777 }
1778
1779 memcpy(p, num_prefix, num_prefix_len);
1780 p += num_prefix_len;
1781
1782 memcpy(p, ekey, ekey_len);
1783 p += ekey_len;
1784 efree(ekey);
1785
1786 if (key_suffix) {
1787 memcpy(p, key_suffix, key_suffix_len);
1788 p += key_suffix_len;
1789 }
1790 *(p++) = '[';
1791 *p = '\0';
1792 }
1793 ht->nApplyCount++;
1794 php_url_encode_hash_ex(HASH_OF(*zdata), formstr, NULL, 0, newprefix, newprefix_len, "]", 1, (Z_TYPE_PP(zdata) == IS_OBJECT ? *zdata : NULL) TSRMLS_CC);
1795 ht->nApplyCount--;
1796 efree(newprefix);
1797 } else if (Z_TYPE_PP(zdata) == IS_NULL || Z_TYPE_PP(zdata) == IS_RESOURCE) {
1798 /* Skip these types */
1799 continue;
1800 } else {
1801 if (formstr->len) {
1802 smart_str_appendl(formstr, arg_sep, arg_sep_len);
1803 }
1804 /* Simple key=value */
1805 smart_str_appendl(formstr, key_prefix, key_prefix_len);
1806 if (key_type == HASH_KEY_IS_STRING) {
1807 ekey = php_url_encode(key, key_len, &ekey_len);
1808 smart_str_appendl(formstr, ekey, ekey_len);
1809 efree(ekey);
1810 } else {
1811 /* Numeric key */
1812 if (num_prefix) {
1813 smart_str_appendl(formstr, num_prefix, num_prefix_len);
1814 }
1815 ekey_len = spprintf(&ekey, 12, "%ld", idx);
1816 smart_str_appendl(formstr, ekey, ekey_len);
1817 efree(ekey);
1818 }
1819 smart_str_appendl(formstr, key_suffix, key_suffix_len);
1820 smart_str_appendl(formstr, "=", 1);
1821 switch (Z_TYPE_PP(zdata)) {
1822 case IS_STRING:
1823 ekey = php_url_encode(Z_STRVAL_PP(zdata), Z_STRLEN_PP(zdata), &ekey_len);
1824 break;
1825 case IS_LONG:
1826 case IS_BOOL:
1827 ekey_len = spprintf(&ekey, 12, "%ld", Z_LVAL_PP(zdata));
1828 break;
1829 case IS_DOUBLE:
1830 ekey_len = spprintf(&ekey, 48, "%.*G", (int) EG(precision), Z_DVAL_PP(zdata));
1831 break;
1832 default:
1833 /* fall back on convert to string */
1834 MAKE_STD_ZVAL(copyzval);
1835 *copyzval = **zdata;
1836 zval_copy_ctor(copyzval);
1837 convert_to_string_ex(&copyzval);
1838 ekey = php_url_encode(Z_STRVAL_P(copyzval), Z_STRLEN_P(copyzval), &ekey_len);
1839 zval_ptr_dtor(&copyzval);
1840 }
1841 smart_str_appendl(formstr, ekey, ekey_len);
1842 efree(ekey);
1843 }
1844 }
1845
1846 return SUCCESS;
1847 }
1848 /* }}} */
1849 #endif /* !ZEND_ENDGINE_2 */
1850
1851 /* }}} public API */
1852
1853 /*
1854 * Local variables:
1855 * tab-width: 4
1856 * c-basic-offset: 4
1857 * End:
1858 * vim600: noet sw=4 ts=4 fdm=marker
1859 * vim<600: noet sw=4 ts=4
1860 */
1861
Extended HTTP Support