xref: /PHP-5.5/ext/standard/url.c (revision e1ba58f0)
1 /*
2    +----------------------------------------------------------------------+
3    | PHP Version 5                                                        |
4    +----------------------------------------------------------------------+
5    | Copyright (c) 1997-2015 The PHP Group                                |
6    +----------------------------------------------------------------------+
7    | This source file is subject to version 3.01 of the PHP license,      |
8    | that is bundled with this package in the file LICENSE, and is        |
9    | available through the world-wide-web at the following url:           |
10    | http://www.php.net/license/3_01.txt                                  |
11    | If you did not receive a copy of the PHP license and are unable to   |
12    | obtain it through the world-wide-web, please send a note to          |
13    | license@php.net so we can mail you a copy immediately.               |
14    +----------------------------------------------------------------------+
15    | Author: Jim Winstead <jimw@php.net>                                  |
16    +----------------------------------------------------------------------+
17  */
18 /* $Id$ */
19 
20 #include <stdlib.h>
21 #include <string.h>
22 #include <ctype.h>
23 #include <sys/types.h>
24 
25 #include "php.h"
26 
27 #include "url.h"
28 #include "file.h"
29 #ifdef _OSD_POSIX
30 #ifndef APACHE
31 #error On this EBCDIC platform, PHP is only supported as an Apache module.
32 #else /*APACHE*/
33 #ifndef CHARSET_EBCDIC
34 #define CHARSET_EBCDIC /* this machine uses EBCDIC, not ASCII! */
35 #endif
36 #include "ebcdic.h"
37 #endif /*APACHE*/
38 #endif /*_OSD_POSIX*/
39 
40 /* {{{ free_url
41  */
php_url_free(php_url * theurl)42 PHPAPI void php_url_free(php_url *theurl)
43 {
44 	if (theurl->scheme)
45 		efree(theurl->scheme);
46 	if (theurl->user)
47 		efree(theurl->user);
48 	if (theurl->pass)
49 		efree(theurl->pass);
50 	if (theurl->host)
51 		efree(theurl->host);
52 	if (theurl->path)
53 		efree(theurl->path);
54 	if (theurl->query)
55 		efree(theurl->query);
56 	if (theurl->fragment)
57 		efree(theurl->fragment);
58 	efree(theurl);
59 }
60 /* }}} */
61 
62 /* {{{ php_replace_controlchars
63  */
php_replace_controlchars_ex(char * str,int len)64 PHPAPI char *php_replace_controlchars_ex(char *str, int len)
65 {
66 	unsigned char *s = (unsigned char *)str;
67 	unsigned char *e = (unsigned char *)str + len;
68 
69 	if (!str) {
70 		return (NULL);
71 	}
72 
73 	while (s < e) {
74 
75 		if (iscntrl(*s)) {
76 			*s='_';
77 		}
78 		s++;
79 	}
80 
81 	return (str);
82 }
83 /* }}} */
84 
php_replace_controlchars(char * str)85 PHPAPI char *php_replace_controlchars(char *str)
86 {
87 	return php_replace_controlchars_ex(str, strlen(str));
88 }
89 
php_url_parse(char const * str)90 PHPAPI php_url *php_url_parse(char const *str)
91 {
92 	return php_url_parse_ex(str, strlen(str));
93 }
94 
95 /* {{{ php_url_parse
96  */
php_url_parse_ex(char const * str,int length)97 PHPAPI php_url *php_url_parse_ex(char const *str, int length)
98 {
99 	char port_buf[6];
100 	php_url *ret = ecalloc(1, sizeof(php_url));
101 	char const *s, *e, *p, *pp, *ue;
102 
103 	s = str;
104 	ue = s + length;
105 
106 	/* parse scheme */
107 	if ((e = memchr(s, ':', length)) && (e - s)) {
108 		/* validate scheme */
109 		p = s;
110 		while (p < e) {
111 			/* scheme = 1*[ lowalpha | digit | "+" | "-" | "." ] */
112 			if (!isalpha(*p) && !isdigit(*p) && *p != '+' && *p != '.' && *p != '-') {
113 				if (e + 1 < ue) {
114 					goto parse_port;
115 				} else {
116 					goto just_path;
117 				}
118 			}
119 			p++;
120 		}
121 
122 		if (*(e + 1) == '\0') { /* only scheme is available */
123 			ret->scheme = estrndup(s, (e - s));
124 			php_replace_controlchars_ex(ret->scheme, (e - s));
125 			goto end;
126 		}
127 
128 		/*
129 		 * certain schemas like mailto: and zlib: may not have any / after them
130 		 * this check ensures we support those.
131 		 */
132 		if (*(e+1) != '/') {
133 			/* check if the data we get is a port this allows us to
134 			 * correctly parse things like a.com:80
135 			 */
136 			p = e + 1;
137 			while (isdigit(*p)) {
138 				p++;
139 			}
140 
141 			if ((*p == '\0' || *p == '/') && (p - e) < 7) {
142 				goto parse_port;
143 			}
144 
145 			ret->scheme = estrndup(s, (e-s));
146 			php_replace_controlchars_ex(ret->scheme, (e - s));
147 
148 			length -= ++e - s;
149 			s = e;
150 			goto just_path;
151 		} else {
152 			ret->scheme = estrndup(s, (e-s));
153 			php_replace_controlchars_ex(ret->scheme, (e - s));
154 
155 			if (*(e+2) == '/') {
156 				s = e + 3;
157 				if (!strncasecmp("file", ret->scheme, sizeof("file"))) {
158 					if (*(e + 3) == '/') {
159 						/* support windows drive letters as in:
160 						   file:///c:/somedir/file.txt
161 						*/
162 						if (*(e + 5) == ':') {
163 							s = e + 4;
164 						}
165 						goto nohost;
166 					}
167 				}
168 			} else {
169 				if (!strncasecmp("file", ret->scheme, sizeof("file"))) {
170 					s = e + 1;
171 					goto nohost;
172 				} else {
173 					length -= ++e - s;
174 					s = e;
175 					goto just_path;
176 				}
177 			}
178 		}
179 	} else if (e) { /* no scheme; starts with colon: look for port */
180 		parse_port:
181 		p = e + 1;
182 		pp = p;
183 
184 		while (pp-p < 6 && isdigit(*pp)) {
185 			pp++;
186 		}
187 
188 		if (pp - p > 0 && pp - p < 6 && (*pp == '/' || *pp == '\0')) {
189 			long port;
190 			memcpy(port_buf, p, (pp - p));
191 			port_buf[pp - p] = '\0';
192 			port = strtol(port_buf, NULL, 10);
193 			if (port > 0 && port <= 65535) {
194 				ret->port = (unsigned short) port;
195 				if (*s == '/' && *(s + 1) == '/') { /* relative-scheme URL */
196 				    s += 2;
197 				}
198 			} else {
199 				STR_FREE(ret->scheme);
200 				efree(ret);
201 				return NULL;
202 			}
203 		} else if (p == pp && *pp == '\0') {
204 			STR_FREE(ret->scheme);
205 			efree(ret);
206 			return NULL;
207 		} else if (*s == '/' && *(s + 1) == '/') { /* relative-scheme URL */
208 			s += 2;
209 		} else {
210 			goto just_path;
211 		}
212 	} else if (*s == '/' && *(s + 1) == '/') { /* relative-scheme URL */
213 		s += 2;
214 	} else {
215 		just_path:
216 		ue = s + length;
217 		goto nohost;
218 	}
219 
220 	e = ue;
221 
222 	if (!(p = memchr(s, '/', (ue - s)))) {
223 		char *query, *fragment;
224 
225 		query = memchr(s, '?', (ue - s));
226 		fragment = memchr(s, '#', (ue - s));
227 
228 		if (query && fragment) {
229 			if (query > fragment) {
230 				e = fragment;
231 			} else {
232 				e = query;
233 			}
234 		} else if (query) {
235 			e = query;
236 		} else if (fragment) {
237 			e = fragment;
238 		}
239 	} else {
240 		e = p;
241 	}
242 
243 	/* check for login and password */
244 	if ((p = zend_memrchr(s, '@', (e-s)))) {
245 		if ((pp = memchr(s, ':', (p-s)))) {
246 			ret->user = estrndup(s, (pp-s));
247 			php_replace_controlchars_ex(ret->user, (pp - s));
248 
249 			pp++;
250 			ret->pass = estrndup(pp, (p-pp));
251 			php_replace_controlchars_ex(ret->pass, (p-pp));
252 		} else {
253 			ret->user = estrndup(s, (p-s));
254 			php_replace_controlchars_ex(ret->user, (p-s));
255 		}
256 
257 		s = p + 1;
258 	}
259 
260 	/* check for port */
261 	if (*s == '[' && *(e-1) == ']') {
262 		/* Short circuit portscan,
263 		   we're dealing with an
264 		   IPv6 embedded address */
265 		p = s;
266 	} else {
267 		/* memrchr is a GNU specific extension
268 		   Emulate for wide compatibility */
269 		for(p = e; p >= s && *p != ':'; p--);
270 	}
271 
272 	if (p >= s && *p == ':') {
273 		if (!ret->port) {
274 			p++;
275 			if (e-p > 5) { /* port cannot be longer then 5 characters */
276 				STR_FREE(ret->scheme);
277 				STR_FREE(ret->user);
278 				STR_FREE(ret->pass);
279 				efree(ret);
280 				return NULL;
281 			} else if (e - p > 0) {
282 				long port;
283 				memcpy(port_buf, p, (e - p));
284 				port_buf[e - p] = '\0';
285 				port = strtol(port_buf, NULL, 10);
286 				if (port > 0 && port <= 65535) {
287 					ret->port = (unsigned short)port;
288 				} else {
289 					STR_FREE(ret->scheme);
290 					STR_FREE(ret->user);
291 					STR_FREE(ret->pass);
292 					efree(ret);
293 					return NULL;
294 				}
295 			}
296 			p--;
297 		}
298 	} else {
299 		p = e;
300 	}
301 
302 	/* check if we have a valid host, if we don't reject the string as url */
303 	if ((p-s) < 1) {
304 		STR_FREE(ret->scheme);
305 		STR_FREE(ret->user);
306 		STR_FREE(ret->pass);
307 		efree(ret);
308 		return NULL;
309 	}
310 
311 	ret->host = estrndup(s, (p-s));
312 	php_replace_controlchars_ex(ret->host, (p - s));
313 
314 	if (e == ue) {
315 		return ret;
316 	}
317 
318 	s = e;
319 
320 	nohost:
321 
322 	if ((p = memchr(s, '?', (ue - s)))) {
323 		pp = memchr(s, '#', (ue - s));
324 
325 		if (pp && pp < p) {
326 			if (pp - s) {
327 				ret->path = estrndup(s, (pp-s));
328 				php_replace_controlchars_ex(ret->path, (pp - s));
329 			}
330 			p = pp;
331 			goto label_parse;
332 		}
333 
334 		if (p - s) {
335 			ret->path = estrndup(s, (p-s));
336 			php_replace_controlchars_ex(ret->path, (p - s));
337 		}
338 
339 		if (pp) {
340 			if (pp - ++p) {
341 				ret->query = estrndup(p, (pp-p));
342 				php_replace_controlchars_ex(ret->query, (pp - p));
343 			}
344 			p = pp;
345 			goto label_parse;
346 		} else if (++p - ue) {
347 			ret->query = estrndup(p, (ue-p));
348 			php_replace_controlchars_ex(ret->query, (ue - p));
349 		}
350 	} else if ((p = memchr(s, '#', (ue - s)))) {
351 		if (p - s) {
352 			ret->path = estrndup(s, (p-s));
353 			php_replace_controlchars_ex(ret->path, (p - s));
354 		}
355 
356 		label_parse:
357 		p++;
358 
359 		if (ue - p) {
360 			ret->fragment = estrndup(p, (ue-p));
361 			php_replace_controlchars_ex(ret->fragment, (ue - p));
362 		}
363 	} else {
364 		ret->path = estrndup(s, (ue-s));
365 		php_replace_controlchars_ex(ret->path, (ue - s));
366 	}
367 end:
368 	return ret;
369 }
370 /* }}} */
371 
372 /* {{{ proto mixed parse_url(string url, [int url_component])
373    Parse a URL and return its components */
PHP_FUNCTION(parse_url)374 PHP_FUNCTION(parse_url)
375 {
376 	char *str;
377 	int str_len;
378 	php_url *resource;
379 	long key = -1;
380 
381 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|l", &str, &str_len, &key) == FAILURE) {
382 		return;
383 	}
384 
385 	resource = php_url_parse_ex(str, str_len);
386 	if (resource == NULL) {
387 		/* @todo Find a method to determine why php_url_parse_ex() failed */
388 		RETURN_FALSE;
389 	}
390 
391 	if (key > -1) {
392 		switch (key) {
393 			case PHP_URL_SCHEME:
394 				if (resource->scheme != NULL) RETVAL_STRING(resource->scheme, 1);
395 				break;
396 			case PHP_URL_HOST:
397 				if (resource->host != NULL) RETVAL_STRING(resource->host, 1);
398 				break;
399 			case PHP_URL_PORT:
400 				if (resource->port != 0) RETVAL_LONG(resource->port);
401 				break;
402 			case PHP_URL_USER:
403 				if (resource->user != NULL) RETVAL_STRING(resource->user, 1);
404 				break;
405 			case PHP_URL_PASS:
406 				if (resource->pass != NULL) RETVAL_STRING(resource->pass, 1);
407 				break;
408 			case PHP_URL_PATH:
409 				if (resource->path != NULL) RETVAL_STRING(resource->path, 1);
410 				break;
411 			case PHP_URL_QUERY:
412 				if (resource->query != NULL) RETVAL_STRING(resource->query, 1);
413 				break;
414 			case PHP_URL_FRAGMENT:
415 				if (resource->fragment != NULL) RETVAL_STRING(resource->fragment, 1);
416 				break;
417 			default:
418 				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid URL component identifier %ld", key);
419 				RETVAL_FALSE;
420 		}
421 		goto done;
422 	}
423 
424 	/* allocate an array for return */
425 	array_init(return_value);
426 
427     /* add the various elements to the array */
428 	if (resource->scheme != NULL)
429 		add_assoc_string(return_value, "scheme", resource->scheme, 1);
430 	if (resource->host != NULL)
431 		add_assoc_string(return_value, "host", resource->host, 1);
432 	if (resource->port != 0)
433 		add_assoc_long(return_value, "port", resource->port);
434 	if (resource->user != NULL)
435 		add_assoc_string(return_value, "user", resource->user, 1);
436 	if (resource->pass != NULL)
437 		add_assoc_string(return_value, "pass", resource->pass, 1);
438 	if (resource->path != NULL)
439 		add_assoc_string(return_value, "path", resource->path, 1);
440 	if (resource->query != NULL)
441 		add_assoc_string(return_value, "query", resource->query, 1);
442 	if (resource->fragment != NULL)
443 		add_assoc_string(return_value, "fragment", resource->fragment, 1);
444 done:
445 	php_url_free(resource);
446 }
447 /* }}} */
448 
449 /* {{{ php_htoi
450  */
php_htoi(char * s)451 static int php_htoi(char *s)
452 {
453 	int value;
454 	int c;
455 
456 	c = ((unsigned char *)s)[0];
457 	if (isupper(c))
458 		c = tolower(c);
459 	value = (c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10) * 16;
460 
461 	c = ((unsigned char *)s)[1];
462 	if (isupper(c))
463 		c = tolower(c);
464 	value += c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10;
465 
466 	return (value);
467 }
468 /* }}} */
469 
470 /* rfc1738:
471 
472    ...The characters ";",
473    "/", "?", ":", "@", "=" and "&" are the characters which may be
474    reserved for special meaning within a scheme...
475 
476    ...Thus, only alphanumerics, the special characters "$-_.+!*'(),", and
477    reserved characters used for their reserved purposes may be used
478    unencoded within a URL...
479 
480    For added safety, we only leave -_. unencoded.
481  */
482 
483 static unsigned char hexchars[] = "0123456789ABCDEF";
484 
485 /* {{{ php_url_encode
486  */
php_url_encode(char const * s,int len,int * new_length)487 PHPAPI char *php_url_encode(char const *s, int len, int *new_length)
488 {
489 	register unsigned char c;
490 	unsigned char *to, *start;
491 	unsigned char const *from, *end;
492 
493 	from = (unsigned char *)s;
494 	end = (unsigned char *)s + len;
495 	start = to = (unsigned char *) safe_emalloc(3, len, 1);
496 
497 	while (from < end) {
498 		c = *from++;
499 
500 		if (c == ' ') {
501 			*to++ = '+';
502 #ifndef CHARSET_EBCDIC
503 		} else if ((c < '0' && c != '-' && c != '.') ||
504 				   (c < 'A' && c > '9') ||
505 				   (c > 'Z' && c < 'a' && c != '_') ||
506 				   (c > 'z')) {
507 			to[0] = '%';
508 			to[1] = hexchars[c >> 4];
509 			to[2] = hexchars[c & 15];
510 			to += 3;
511 #else /*CHARSET_EBCDIC*/
512 		} else if (!isalnum(c) && strchr("_-.", c) == NULL) {
513 			/* Allow only alphanumeric chars and '_', '-', '.'; escape the rest */
514 			to[0] = '%';
515 			to[1] = hexchars[os_toascii[c] >> 4];
516 			to[2] = hexchars[os_toascii[c] & 15];
517 			to += 3;
518 #endif /*CHARSET_EBCDIC*/
519 		} else {
520 			*to++ = c;
521 		}
522 	}
523 	*to = 0;
524 	if (new_length) {
525 		*new_length = to - start;
526 	}
527 	return (char *) start;
528 }
529 /* }}} */
530 
531 /* {{{ proto string urlencode(string str)
532    URL-encodes string */
PHP_FUNCTION(urlencode)533 PHP_FUNCTION(urlencode)
534 {
535 	char *in_str, *out_str;
536 	int in_str_len, out_str_len;
537 
538 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &in_str,
539 							  &in_str_len) == FAILURE) {
540 		return;
541 	}
542 
543 	out_str = php_url_encode(in_str, in_str_len, &out_str_len);
544 	RETURN_STRINGL(out_str, out_str_len, 0);
545 }
546 /* }}} */
547 
548 /* {{{ proto string urldecode(string str)
549    Decodes URL-encoded string */
PHP_FUNCTION(urldecode)550 PHP_FUNCTION(urldecode)
551 {
552 	char *in_str, *out_str;
553 	int in_str_len, out_str_len;
554 
555 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &in_str,
556 							  &in_str_len) == FAILURE) {
557 		return;
558 	}
559 
560 	out_str = estrndup(in_str, in_str_len);
561 	out_str_len = php_url_decode(out_str, in_str_len);
562 
563     RETURN_STRINGL(out_str, out_str_len, 0);
564 }
565 /* }}} */
566 
567 /* {{{ php_url_decode
568  */
php_url_decode(char * str,int len)569 PHPAPI int php_url_decode(char *str, int len)
570 {
571 	char *dest = str;
572 	char *data = str;
573 
574 	while (len--) {
575 		if (*data == '+') {
576 			*dest = ' ';
577 		}
578 		else if (*data == '%' && len >= 2 && isxdigit((int) *(data + 1))
579 				 && isxdigit((int) *(data + 2))) {
580 #ifndef CHARSET_EBCDIC
581 			*dest = (char) php_htoi(data + 1);
582 #else
583 			*dest = os_toebcdic[(char) php_htoi(data + 1)];
584 #endif
585 			data += 2;
586 			len -= 2;
587 		} else {
588 			*dest = *data;
589 		}
590 		data++;
591 		dest++;
592 	}
593 	*dest = '\0';
594 	return dest - str;
595 }
596 /* }}} */
597 
598 /* {{{ php_raw_url_encode
599  */
php_raw_url_encode(char const * s,int len,int * new_length)600 PHPAPI char *php_raw_url_encode(char const *s, int len, int *new_length)
601 {
602 	register size_t x, y;
603 	unsigned char *str;
604 
605 	str = (unsigned char *) safe_emalloc(3, len, 1);
606 	for (x = 0, y = 0; len--; x++, y++) {
607 		str[y] = (unsigned char) s[x];
608 #ifndef CHARSET_EBCDIC
609 		if ((str[y] < '0' && str[y] != '-' && str[y] != '.') ||
610 			(str[y] < 'A' && str[y] > '9') ||
611 			(str[y] > 'Z' && str[y] < 'a' && str[y] != '_') ||
612 			(str[y] > 'z' && str[y] != '~')) {
613 			str[y++] = '%';
614 			str[y++] = hexchars[(unsigned char) s[x] >> 4];
615 			str[y] = hexchars[(unsigned char) s[x] & 15];
616 #else /*CHARSET_EBCDIC*/
617 		if (!isalnum(str[y]) && strchr("_-.~", str[y]) != NULL) {
618 			str[y++] = '%';
619 			str[y++] = hexchars[os_toascii[(unsigned char) s[x]] >> 4];
620 			str[y] = hexchars[os_toascii[(unsigned char) s[x]] & 15];
621 #endif /*CHARSET_EBCDIC*/
622 		}
623 	}
624 	str[y] = '\0';
625 	if (new_length) {
626 		*new_length = y;
627 	}
628 	if (UNEXPECTED(y > INT_MAX)) {
629 		efree(str);
630 		zend_error(E_ERROR, "String size overflow");
631 	}
632 	return ((char *) str);
633 }
634 /* }}} */
635 
636 /* {{{ proto string rawurlencode(string str)
637    URL-encodes string */
638 PHP_FUNCTION(rawurlencode)
639 {
640 	char *in_str, *out_str;
641 	int in_str_len, out_str_len;
642 
643 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &in_str,
644 							  &in_str_len) == FAILURE) {
645 		return;
646 	}
647 
648 	out_str = php_raw_url_encode(in_str, in_str_len, &out_str_len);
649 	RETURN_STRINGL(out_str, out_str_len, 0);
650 }
651 /* }}} */
652 
653 /* {{{ proto string rawurldecode(string str)
654    Decodes URL-encodes string */
655 PHP_FUNCTION(rawurldecode)
656 {
657 	char *in_str, *out_str;
658 	int in_str_len, out_str_len;
659 
660 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &in_str,
661 							  &in_str_len) == FAILURE) {
662 		return;
663 	}
664 
665 	out_str = estrndup(in_str, in_str_len);
666 	out_str_len = php_raw_url_decode(out_str, in_str_len);
667 
668     RETURN_STRINGL(out_str, out_str_len, 0);
669 }
670 /* }}} */
671 
672 /* {{{ php_raw_url_decode
673  */
674 PHPAPI int php_raw_url_decode(char *str, int len)
675 {
676 	char *dest = str;
677 	char *data = str;
678 
679 	while (len--) {
680 		if (*data == '%' && len >= 2 && isxdigit((int) *(data + 1))
681 			&& isxdigit((int) *(data + 2))) {
682 #ifndef CHARSET_EBCDIC
683 			*dest = (char) php_htoi(data + 1);
684 #else
685 			*dest = os_toebcdic[(char) php_htoi(data + 1)];
686 #endif
687 			data += 2;
688 			len -= 2;
689 		} else {
690 			*dest = *data;
691 		}
692 		data++;
693 		dest++;
694 	}
695 	*dest = '\0';
696 	return dest - str;
697 }
698 /* }}} */
699 
700 /* {{{ proto array get_headers(string url[, int format])
701    fetches all the headers sent by the server in response to a HTTP request */
702 PHP_FUNCTION(get_headers)
703 {
704 	char *url;
705 	int url_len;
706 	php_stream_context *context;
707 	php_stream *stream;
708 	zval **prev_val, **hdr = NULL, **h;
709 	HashPosition pos;
710 	HashTable *hashT;
711 	long format = 0;
712 
713 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|l", &url, &url_len, &format) == FAILURE) {
714 		return;
715 	}
716 	context = FG(default_context) ? FG(default_context) : (FG(default_context) = php_stream_context_alloc(TSRMLS_C));
717 
718 	if (!(stream = php_stream_open_wrapper_ex(url, "r", REPORT_ERRORS | STREAM_USE_URL | STREAM_ONLY_GET_HEADERS, NULL, context))) {
719 		RETURN_FALSE;
720 	}
721 
722 	if (!stream->wrapperdata || Z_TYPE_P(stream->wrapperdata) != IS_ARRAY) {
723 		php_stream_close(stream);
724 		RETURN_FALSE;
725 	}
726 
727 	array_init(return_value);
728 
729 	/* check for curl-wrappers that provide headers via a special "headers" element */
730 	if (zend_hash_find(HASH_OF(stream->wrapperdata), "headers", sizeof("headers"), (void **)&h) != FAILURE && Z_TYPE_PP(h) == IS_ARRAY) {
731 		/* curl-wrappers don't load data until the 1st read */
732 		if (!Z_ARRVAL_PP(h)->nNumOfElements) {
733 			php_stream_getc(stream);
734 		}
735 		zend_hash_find(HASH_OF(stream->wrapperdata), "headers", sizeof("headers"), (void **)&h);
736 		hashT = Z_ARRVAL_PP(h);
737 	} else {
738 		hashT = HASH_OF(stream->wrapperdata);
739 	}
740 
741 	zend_hash_internal_pointer_reset_ex(hashT, &pos);
742 	while (zend_hash_get_current_data_ex(hashT, (void**)&hdr, &pos) != FAILURE) {
743 		if (!hdr || Z_TYPE_PP(hdr) != IS_STRING) {
744 			zend_hash_move_forward_ex(hashT, &pos);
745 			continue;
746 		}
747 		if (!format) {
748 no_name_header:
749 			add_next_index_stringl(return_value, Z_STRVAL_PP(hdr), Z_STRLEN_PP(hdr), 1);
750 		} else {
751 			char c;
752 			char *s, *p;
753 
754 			if ((p = strchr(Z_STRVAL_PP(hdr), ':'))) {
755 				c = *p;
756 				*p = '\0';
757 				s = p + 1;
758 				while (isspace((int)*(unsigned char *)s)) {
759 					s++;
760 				}
761 
762 				if (zend_hash_find(HASH_OF(return_value), Z_STRVAL_PP(hdr), (p - Z_STRVAL_PP(hdr) + 1), (void **) &prev_val) == FAILURE) {
763 					add_assoc_stringl_ex(return_value, Z_STRVAL_PP(hdr), (p - Z_STRVAL_PP(hdr) + 1), s, (Z_STRLEN_PP(hdr) - (s - Z_STRVAL_PP(hdr))), 1);
764 				} else { /* some headers may occur more then once, therefor we need to remake the string into an array */
765 					convert_to_array(*prev_val);
766 					add_next_index_stringl(*prev_val, s, (Z_STRLEN_PP(hdr) - (s - Z_STRVAL_PP(hdr))), 1);
767 				}
768 
769 				*p = c;
770 			} else {
771 				goto no_name_header;
772 			}
773 		}
774 		zend_hash_move_forward_ex(hashT, &pos);
775 	}
776 
777 	php_stream_close(stream);
778 }
779 /* }}} */
780 
781 /*
782  * Local variables:
783  * tab-width: 4
784  * c-basic-offset: 4
785  * End:
786  * vim600: sw=4 ts=4 fdm=marker
787  * vim<600: sw=4 ts=4
788  */
789