-
Notifications
You must be signed in to change notification settings - Fork 0
/
Snoopy.class.php
1001 lines (857 loc) · 37.7 KB
/
Snoopy.class.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
/*************************************************
*
* Snoopy - the PHP net client
* Author: Monte Ohrt <monte@ohrt.com>
* Copyright (c): 1999-2014, all rights reserved
* Version: 2.0.0
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* You may contact the author of Snoopy by e-mail at:
* monte@ohrt.com
*
* The latest version of Snoopy can be obtained from:
* http://snoopy.sourceforge.net/
*************************************************/
class Snoopy
{
/**** Public variables ****/
/* user definable vars */
var $scheme = 'http'; // http or https
var $host = "www.php.net"; // host name we are connecting to
var $port = 80; // port we are connecting to
var $proxy_host = ""; // proxy host to use
var $proxy_port = ""; // proxy port to use
var $proxy_user = ""; // proxy user to use
var $proxy_pass = ""; // proxy password to use
var $agent = "Snoopy v2.0.0"; // agent we masquerade as
var $referer = ""; // referer info to pass
var $cookies = array(); // array of cookies to pass
// $cookies["username"]="joe";
var $rawheaders = array(); // array of raw headers to send
// $rawheaders["Content-type"]="text/html";
var $maxredirs = 5; // http redirection depth maximum. 0 = disallow
var $lastredirectaddr = ""; // contains address of last redirected address
var $offsiteok = true; // allows redirection off-site
var $maxframes = 0; // frame content depth maximum. 0 = disallow
var $expandlinks = true; // expand links to fully qualified URLs.
// this only applies to fetchlinks()
// submitlinks(), and submittext()
var $passcookies = true; // pass set cookies back through redirects
// NOTE: this currently does not respect
// dates, domains or paths.
var $user = ""; // user for http authentication
var $pass = ""; // password for http authentication
// http accept types
var $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
var $results = ""; // where the content is put
var $error = ""; // error messages sent here
var $response_code = ""; // response code returned from server
var $headers = array(); // headers returned from server sent here
var $maxlength = 500000; // max return data length (body)
var $read_timeout = 0; // timeout on read operations, in seconds
// supported only since PHP 4 Beta 4
// set to 0 to disallow timeouts
var $timed_out = false; // if a read operation timed out
var $status = 0; // http request status
var $temp_dir = "/tmp"; // temporary directory that the webserver
// has permission to write to.
// under Windows, this should be C:\temp
var $curl_path = false;
// deprecated, snoopy no longer uses curl for https requests,
// but instead requires the openssl extension.
// send Accept-encoding: gzip?
var $use_gzip = true;
// file or directory with CA certificates to verify remote host with
var $cafile;
var $capath;
/**** Private variables ****/
var $_maxlinelen = 4096; // max line length (headers)
var $_httpmethod = "GET"; // default http request method
var $_httpversion = "HTTP/1.0"; // default http request version
var $_submit_method = "POST"; // default submit method
var $_submit_type = "application/x-www-form-urlencoded"; // default submit type
var $_mime_boundary = ""; // MIME boundary for multipart/form-data submit type
var $_redirectaddr = false; // will be set if page fetched is a redirect
var $_redirectdepth = 0; // increments on an http redirect
var $_frameurls = array(); // frame src urls
var $_framedepth = 0; // increments on frame depth
var $_isproxy = false; // set if using a proxy server
var $_fp_timeout = 30; // timeout for socket connection
/*======================================================================*\
Function: fetch
Purpose: fetch the contents of a web page
(and possibly other protocols in the
future like ftp, nntp, gopher, etc.)
Input: $URI the location of the page to fetch
Output: $this->results the output text from the fetch
\*======================================================================*/
function fetch($URI)
{
$URI_PARTS = parse_url($URI);
if (!empty($URI_PARTS["user"]))
$this->user = $URI_PARTS["user"];
if (!empty($URI_PARTS["pass"]))
$this->pass = $URI_PARTS["pass"];
if (empty($URI_PARTS["query"]))
$URI_PARTS["query"] = '';
if (empty($URI_PARTS["path"]))
$URI_PARTS["path"] = '';
$fp = null;
switch (strtolower($URI_PARTS["scheme"])) {
case "https":
if (!extension_loaded('openssl')) {
trigger_error("openssl extension required for HTTPS", E_USER_ERROR);
exit;
}
$this->port = 443;
case "http":
$this->scheme = strtolower($URI_PARTS["scheme"]);
$this->host = $URI_PARTS["host"];
if (!empty($URI_PARTS["port"]))
$this->port = $URI_PARTS["port"];
if ($this->_connect($fp)) {
if ($this->_isproxy) {
// using proxy, send entire URI
$this->_httprequest($URI, $fp, $URI, $this->_httpmethod);
} else {
$path = $URI_PARTS["path"] . ($URI_PARTS["query"] ? "?" . $URI_PARTS["query"] : "");
// no proxy, send only the path
$this->_httprequest($path, $fp, $URI, $this->_httpmethod);
}
$this->_disconnect($fp);
if ($this->_redirectaddr) {
/* url was redirected, check if we've hit the max depth */
if ($this->maxredirs > $this->_redirectdepth) {
// only follow redirect if it's on this site, or offsiteok is true
if (preg_match("|^https?://" . preg_quote($this->host) . "|i", $this->_redirectaddr) || $this->offsiteok) {
/* follow the redirect */
$this->_redirectdepth++;
$this->lastredirectaddr = $this->_redirectaddr;
$this->fetch($this->_redirectaddr);
}
}
}
if ($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0) {
$frameurls = $this->_frameurls;
$this->_frameurls = array();
while (list(, $frameurl) = each($frameurls)) {
if ($this->_framedepth < $this->maxframes) {
$this->fetch($frameurl);
$this->_framedepth++;
} else
break;
}
}
} else {
return false;
}
return $this;
break;
default:
// not a valid protocol
$this->error = 'Invalid protocol "' . $URI_PARTS["scheme"] . '"\n';
return false;
break;
}
return $this;
}
/*======================================================================*\
Function: submit
Purpose: submit an http(s) form
Input: $URI the location to post the data
$formvars the formvars to use.
format: $formvars["var"] = "val";
$formfiles an array of files to submit
format: $formfiles["var"] = "/dir/filename.ext";
Output: $this->results the text output from the post
\*======================================================================*/
function submit($URI, $formvars = "", $formfiles = "")
{
unset($postdata);
$postdata = $this->_prepare_post_body($formvars, $formfiles);
$URI_PARTS = parse_url($URI);
if (!empty($URI_PARTS["user"]))
$this->user = $URI_PARTS["user"];
if (!empty($URI_PARTS["pass"]))
$this->pass = $URI_PARTS["pass"];
if (empty($URI_PARTS["query"]))
$URI_PARTS["query"] = '';
if (empty($URI_PARTS["path"]))
$URI_PARTS["path"] = '';
switch (strtolower($URI_PARTS["scheme"])) {
case "https":
if (!extension_loaded('openssl')) {
trigger_error("openssl extension required for HTTPS", E_USER_ERROR);
exit;
}
$this->port = 443;
case "http":
$this->scheme = strtolower($URI_PARTS["scheme"]);
$this->host = $URI_PARTS["host"];
if (!empty($URI_PARTS["port"]))
$this->port = $URI_PARTS["port"];
if ($this->_connect($fp)) {
if ($this->_isproxy) {
// using proxy, send entire URI
$this->_httprequest($URI, $fp, $URI, $this->_submit_method, $this->_submit_type, $postdata);
} else {
$path = $URI_PARTS["path"] . ($URI_PARTS["query"] ? "?" . $URI_PARTS["query"] : "");
// no proxy, send only the path
$this->_httprequest($path, $fp, $URI, $this->_submit_method, $this->_submit_type, $postdata);
}
$this->_disconnect($fp);
if ($this->_redirectaddr) {
/* url was redirected, check if we've hit the max depth */
if ($this->maxredirs > $this->_redirectdepth) {
if (!preg_match("|^" . $URI_PARTS["scheme"] . "://|", $this->_redirectaddr))
$this->_redirectaddr = $this->_expandlinks($this->_redirectaddr, $URI_PARTS["scheme"] . "://" . $URI_PARTS["host"]);
// only follow redirect if it's on this site, or offsiteok is true
if (preg_match("|^https?://" . preg_quote($this->host) . "|i", $this->_redirectaddr) || $this->offsiteok) {
/* follow the redirect */
$this->_redirectdepth++;
$this->lastredirectaddr = $this->_redirectaddr;
if (strpos($this->_redirectaddr, "?") > 0)
$this->fetch($this->_redirectaddr); // the redirect has changed the request method from post to get
else
$this->submit($this->_redirectaddr, $formvars, $formfiles);
}
}
}
if ($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0) {
$frameurls = $this->_frameurls;
$this->_frameurls = array();
while (list(, $frameurl) = each($frameurls)) {
if ($this->_framedepth < $this->maxframes) {
$this->fetch($frameurl);
$this->_framedepth++;
} else
break;
}
}
} else {
return false;
}
return $this;
break;
default:
// not a valid protocol
$this->error = 'Invalid protocol "' . $URI_PARTS["scheme"] . '"\n';
return false;
break;
}
return $this;
}
/*======================================================================*\
Function: fetchlinks
Purpose: fetch the links from a web page
Input: $URI where you are fetching from
Output: $this->results an array of the URLs
\*======================================================================*/
function fetchlinks($URI)
{
if ($this->fetch($URI) !== false) {
if ($this->lastredirectaddr)
$URI = $this->lastredirectaddr;
if (is_array($this->results)) {
for ($x = 0; $x < count($this->results); $x++)
$this->results[$x] = $this->_striplinks($this->results[$x]);
} else
$this->results = $this->_striplinks($this->results);
if ($this->expandlinks)
$this->results = $this->_expandlinks($this->results, $URI);
return $this;
} else
return false;
}
/*======================================================================*\
Function: fetchform
Purpose: fetch the form elements from a web page
Input: $URI where you are fetching from
Output: $this->results the resulting html form
\*======================================================================*/
function fetchform($URI)
{
if ($this->fetch($URI) !== false) {
if (is_array($this->results)) {
for ($x = 0; $x < count($this->results); $x++)
$this->results[$x] = $this->_stripform($this->results[$x]);
} else
$this->results = $this->_stripform($this->results);
return $this;
} else
return false;
}
/*======================================================================*\
Function: fetchtext
Purpose: fetch the text from a web page, stripping the links
Input: $URI where you are fetching from
Output: $this->results the text from the web page
\*======================================================================*/
function fetchtext($URI)
{
if ($this->fetch($URI) !== false) {
if (is_array($this->results)) {
for ($x = 0; $x < count($this->results); $x++)
$this->results[$x] = $this->_striptext($this->results[$x]);
} else
$this->results = $this->_striptext($this->results);
return $this;
} else
return false;
}
/*======================================================================*\
Function: submitlinks
Purpose: grab links from a form submission
Input: $URI where you are submitting from
Output: $this->results an array of the links from the post
\*======================================================================*/
function submitlinks($URI, $formvars = "", $formfiles = "")
{
if ($this->submit($URI, $formvars, $formfiles) !== false) {
if ($this->lastredirectaddr)
$URI = $this->lastredirectaddr;
if (is_array($this->results)) {
for ($x = 0; $x < count($this->results); $x++) {
$this->results[$x] = $this->_striplinks($this->results[$x]);
if ($this->expandlinks)
$this->results[$x] = $this->_expandlinks($this->results[$x], $URI);
}
} else {
$this->results = $this->_striplinks($this->results);
if ($this->expandlinks)
$this->results = $this->_expandlinks($this->results, $URI);
}
return $this;
} else
return false;
}
/*======================================================================*\
Function: submittext
Purpose: grab text from a form submission
Input: $URI where you are submitting from
Output: $this->results the text from the web page
\*======================================================================*/
function submittext($URI, $formvars = "", $formfiles = "")
{
if ($this->submit($URI, $formvars, $formfiles) !== false) {
if ($this->lastredirectaddr)
$URI = $this->lastredirectaddr;
if (is_array($this->results)) {
for ($x = 0; $x < count($this->results); $x++) {
$this->results[$x] = $this->_striptext($this->results[$x]);
if ($this->expandlinks)
$this->results[$x] = $this->_expandlinks($this->results[$x], $URI);
}
} else {
$this->results = $this->_striptext($this->results);
if ($this->expandlinks)
$this->results = $this->_expandlinks($this->results, $URI);
}
return $this;
} else
return false;
}
/*======================================================================*\
Function: set_submit_multipart
Purpose: Set the form submission content type to
multipart/form-data
\*======================================================================*/
function set_submit_multipart()
{
$this->_submit_type = "multipart/form-data";
return $this;
}
/*======================================================================*\
Function: set_submit_normal
Purpose: Set the form submission content type to
application/x-www-form-urlencoded
\*======================================================================*/
function set_submit_normal()
{
$this->_submit_type = "application/x-www-form-urlencoded";
return $this;
}
/*======================================================================*\
Private functions
\*======================================================================*/
/*======================================================================*\
Function: _striplinks
Purpose: strip the hyperlinks from an html document
Input: $document document to strip.
Output: $match an array of the links
\*======================================================================*/
function _striplinks($document)
{
preg_match_all("'<\s*a\s.*?href\s*=\s* # find <a href=
([\"\'])? # find single or double quote
(?(1) (.*?)\\1 | ([^\s\>]+)) # if quote found, match up to next matching
# quote, otherwise match up to next space
'isx", $document, $links);
// catenate the non-empty matches from the conditional subpattern
while (list($key, $val) = each($links[2])) {
if (!empty($val))
$match[] = $val;
}
while (list($key, $val) = each($links[3])) {
if (!empty($val))
$match[] = $val;
}
// return the links
return $match;
}
/*======================================================================*\
Function: _stripform
Purpose: strip the form elements from an html document
Input: $document document to strip.
Output: $match an array of the links
\*======================================================================*/
function _stripform($document)
{
preg_match_all("'<\/?(FORM|INPUT|SELECT|TEXTAREA|(OPTION))[^<>]*>(?(2)(.*(?=<\/?(option|select)[^<>]*>[\r\n]*)|(?=[\r\n]*))|(?=[\r\n]*))'Usi", $document, $elements);
// catenate the matches
$match = implode("\r\n", $elements[0]);
// return the links
return $match;
}
/*======================================================================*\
Function: _striptext
Purpose: strip the text from an html document
Input: $document document to strip.
Output: $text the resulting text
\*======================================================================*/
function _striptext($document)
{
// I didn't use preg eval (//e) since that is only available in PHP 4.0.
// so, list your entities one by one here. I included some of the
// more common ones.
$search = array("'<script[^>]*?>.*?</script>'si", // strip out javascript
"'<[\/\!]*?[^<>]*?>'si", // strip out html tags
"'([\r\n])[\s]+'", // strip out white space
"'&(quot|#34|#034|#x22);'i", // replace html entities
"'&(amp|#38|#038|#x26);'i", // added hexadecimal values
"'&(lt|#60|#060|#x3c);'i",
"'&(gt|#62|#062|#x3e);'i",
"'&(nbsp|#160|#xa0);'i",
"'&(iexcl|#161);'i",
"'&(cent|#162);'i",
"'&(pound|#163);'i",
"'&(copy|#169);'i",
"'&(reg|#174);'i",
"'&(deg|#176);'i",
"'&(#39|#039|#x27);'",
"'&(euro|#8364);'i", // europe
"'&a(uml|UML);'", // german
"'&o(uml|UML);'",
"'&u(uml|UML);'",
"'&A(uml|UML);'",
"'&O(uml|UML);'",
"'&U(uml|UML);'",
"'ß'i",
);
$replace = array("",
"",
"\\1",
"\"",
"&",
"<",
">",
" ",
chr(161),
chr(162),
chr(163),
chr(169),
chr(174),
chr(176),
chr(39),
chr(128),
"ä",
"ö",
"ü",
"Ä",
"Ö",
"Ü",
"ß",
);
$text = preg_replace($search, $replace, $document);
return $text;
}
/*======================================================================*\
Function: _expandlinks
Purpose: expand each link into a fully qualified URL
Input: $links the links to qualify
$URI the full URI to get the base from
Output: $expandedLinks the expanded links
\*======================================================================*/
function _expandlinks($links, $URI)
{
preg_match("/^[^\?]+/", $URI, $match);
$match = preg_replace("|/[^\/\.]+\.[^\/\.]+$|", "", $match[0]);
$match = preg_replace("|/$|", "", $match);
$match_part = parse_url($match);
$match_root =
$match_part["scheme"] . "://" . $match_part["host"];
$search = array("|^http://" . preg_quote($this->host) . "|i",
"|^(\/)|i",
"|^(?!http://)(?!mailto:)|i",
"|/\./|",
"|/[^\/]+/\.\./|"
);
$replace = array("",
$match_root . "/",
$match . "/",
"/",
"/"
);
$expandedLinks = preg_replace($search, $replace, $links);
return $expandedLinks;
}
/*======================================================================*\
Function: _httprequest
Purpose: go get the http(s) data from the server
Input: $url the url to fetch
$fp the current open file pointer
$URI the full URI
$body body contents to send if any (POST)
Output:
\*======================================================================*/
function _httprequest($url, $fp, $URI, $http_method, $content_type = "", $body = "")
{
$cookie_headers = '';
if ($this->passcookies && $this->_redirectaddr)
$this->setcookies();
$URI_PARTS = parse_url($URI);
if (empty($url))
$url = "/";
$headers = $http_method . " " . $url . " " . $this->_httpversion . "\r\n";
if (!empty($this->host) && !isset($this->rawheaders['Host'])) {
$headers .= "Host: " . $this->host;
if (!empty($this->port) && $this->port != '80')
$headers .= ":" . $this->port;
$headers .= "\r\n";
}
if (!empty($this->agent))
$headers .= "User-Agent: " . $this->agent . "\r\n";
if (!empty($this->accept))
$headers .= "Accept: " . $this->accept . "\r\n";
if ($this->use_gzip) {
// make sure PHP was built with --with-zlib
// and we can handle gzipp'ed data
if (function_exists('gzinflate')) {
$headers .= "Accept-encoding: gzip\r\n";
} else {
trigger_error(
"use_gzip is on, but PHP was built without zlib support." .
" Requesting file(s) without gzip encoding.",
E_USER_NOTICE);
}
}
if (!empty($this->referer))
$headers .= "Referer: " . $this->referer . "\r\n";
if (!empty($this->cookies)) {
if (!is_array($this->cookies))
$this->cookies = (array)$this->cookies;
reset($this->cookies);
if (count($this->cookies) > 0) {
$cookie_headers .= 'Cookie: ';
foreach ($this->cookies as $cookieKey => $cookieVal) {
$cookie_headers .= $cookieKey . "=" . urlencode($cookieVal) . "; ";
}
$headers .= substr($cookie_headers, 0, -2) . "\r\n";
}
}
if (!empty($this->rawheaders)) {
if (!is_array($this->rawheaders))
$this->rawheaders = (array)$this->rawheaders;
while (list($headerKey, $headerVal) = each($this->rawheaders))
$headers .= $headerKey . ": " . $headerVal . "\r\n";
}
if (!empty($content_type)) {
$headers .= "Content-type: $content_type";
if ($content_type == "multipart/form-data")
$headers .= "; boundary=" . $this->_mime_boundary;
$headers .= "\r\n";
}
if (!empty($body))
$headers .= "Content-length: " . strlen($body) . "\r\n";
if (!empty($this->user) || !empty($this->pass))
$headers .= "Authorization: Basic " . base64_encode($this->user . ":" . $this->pass) . "\r\n";
//add proxy auth headers
if (!empty($this->proxy_user))
$headers .= 'Proxy-Authorization: ' . 'Basic ' . base64_encode($this->proxy_user . ':' . $this->proxy_pass) . "\r\n";
$headers .= "\r\n";
// set the read timeout if needed
if ($this->read_timeout > 0)
socket_set_timeout($fp, $this->read_timeout);
$this->timed_out = false;
fwrite($fp, $headers . $body, strlen($headers . $body));
$this->_redirectaddr = false;
unset($this->headers);
// content was returned gzip encoded?
$is_gzipped = false;
while ($currentHeader = fgets($fp, $this->_maxlinelen)) {
if ($this->read_timeout > 0 && $this->_check_timeout($fp)) {
$this->status = -100;
return false;
}
if ($currentHeader == "\r\n")
break;
// if a header begins with Location: or URI:, set the redirect
if (preg_match("/^(Location:|URI:)/i", $currentHeader)) {
// get URL portion of the redirect
preg_match("/^(Location:|URI:)[ ]+(.*)/i", chop($currentHeader), $matches);
// look for :// in the Location header to see if hostname is included
if (!preg_match("|\:\/\/|", $matches[2])) {
// no host in the path, so prepend
$this->_redirectaddr = $URI_PARTS["scheme"] . "://" . $this->host . ":" . $this->port;
// eliminate double slash
if (!preg_match("|^/|", $matches[2]))
$this->_redirectaddr .= "/" . $matches[2];
else
$this->_redirectaddr .= $matches[2];
} else
$this->_redirectaddr = $matches[2];
}
if (preg_match("|^HTTP/|", $currentHeader)) {
if (preg_match("|^HTTP/[^\s]*\s(.*?)\s|", $currentHeader, $status)) {
$this->status = $status[1];
}
$this->response_code = $currentHeader;
}
if (preg_match("/Content-Encoding: gzip/", $currentHeader)) {
$is_gzipped = true;
}
$this->headers[] = $currentHeader;
}
$results = '';
do {
$_data = fread($fp, $this->maxlength);
if (strlen($_data) == 0) {
break;
}
$results .= $_data;
} while (true);
// gunzip
if ($is_gzipped) {
// per http://www.php.net/manual/en/function.gzencode.php
$results = substr($results, 10);
$results = gzinflate($results);
}
if ($this->read_timeout > 0 && $this->_check_timeout($fp)) {
$this->status = -100;
return false;
}
// check if there is a a redirect meta tag
if (preg_match("'<meta[\s]*http-equiv[^>]*?content[\s]*=[\s]*[\"\']?\d+;[\s]*URL[\s]*=[\s]*([^\"\']*?)[\"\']?>'i", $results, $match)) {
$this->_redirectaddr = $this->_expandlinks($match[1], $URI);
}
// have we hit our frame depth and is there frame src to fetch?
if (($this->_framedepth < $this->maxframes) && preg_match_all("'<frame\s+.*src[\s]*=[\'\"]?([^\'\"\>]+)'i", $results, $match)) {
$this->results[] = $results;
for ($x = 0; $x < count($match[1]); $x++)
$this->_frameurls[] = $this->_expandlinks($match[1][$x], $URI_PARTS["scheme"] . "://" . $this->host);
} // have we already fetched framed content?
elseif (is_array($this->results))
$this->results[] = $results;
// no framed content
else
$this->results = $results;
return $this;
}
/*======================================================================*\
Function: setcookies()
Purpose: set cookies for a redirection
\*======================================================================*/
function setcookies()
{
for ($x = 0; $x < count($this->headers); $x++) {
if (preg_match('/^set-cookie:[\s]+([^=]+)=([^;]+)/i', $this->headers[$x], $match))
$this->cookies[$match[1]] = urldecode($match[2]);
}
return $this;
}
/*======================================================================*\
Function: _check_timeout
Purpose: checks whether timeout has occurred
Input: $fp file pointer
\*======================================================================*/
function _check_timeout($fp)
{
if ($this->read_timeout > 0) {
$fp_status = socket_get_status($fp);
if ($fp_status["timed_out"]) {
$this->timed_out = true;
return true;
}
}
return false;
}
/*======================================================================*\
Function: _connect
Purpose: make a socket connection
Input: $fp file pointer
\*======================================================================*/
function _connect(&$fp)
{
if (!empty($this->proxy_host) && !empty($this->proxy_port)) {
$this->_isproxy = true;
$host = $this->proxy_host;
$port = $this->proxy_port;
if ($this->scheme == 'https') {
trigger_error("HTTPS connections over proxy are currently not supported", E_USER_ERROR);
exit;
}
} else {
$host = $this->host;
$port = $this->port;
}
$this->status = 0;
$context_opts = array();
if ($this->scheme == 'https') {
// if cafile or capath is specified, enable certificate
// verification (including name checks)
if (isset($this->cafile) || isset($this->capath)) {
$context_opts['ssl'] = array(
'verify_peer' => true,
'CN_match' => $this->host,
'disable_compression' => true,
);
if (isset($this->cafile))
$context_opts['ssl']['cafile'] = $this->cafile;
if (isset($this->capath))
$context_opts['ssl']['capath'] = $this->capath;
}
$host = 'ssl://' . $host;
}
$context = stream_context_create($context_opts);
if (version_compare(PHP_VERSION, '5.0.0', '>')) {
if($this->scheme == 'http')
$host = "tcp://" . $host;
$fp = stream_socket_client(
"$host:$port",
$errno,
$errmsg,
$this->_fp_timeout,
STREAM_CLIENT_CONNECT,
$context);
} else {
$fp = fsockopen(
$host,
$port,
$errno,
$errstr,
$this->_fp_timeout,
$context);
}
if ($fp) {
// socket connection succeeded
return true;
} else {
// socket connection failed
$this->status = $errno;
switch ($errno) {
case -3:
$this->error = "socket creation failed (-3)";
case -4:
$this->error = "dns lookup failure (-4)";
case -5:
$this->error = "connection refused or timed out (-5)";
default:
$this->error = "connection failed (" . $errno . ")";
}
return false;
}
}
/*======================================================================*\
Function: _disconnect
Purpose: disconnect a socket connection
Input: $fp file pointer
\*======================================================================*/
function _disconnect($fp)
{
return (fclose($fp));
}
/*======================================================================*\
Function: _prepare_post_body
Purpose: Prepare post body according to encoding type
Input: $formvars - form variables
$formfiles - form upload files
Output: post body
\*======================================================================*/
function _prepare_post_body($formvars, $formfiles)
{
settype($formvars, "array");
settype($formfiles, "array");
$postdata = '';
if (count($formvars) == 0 && count($formfiles) == 0)
return;
switch ($this->_submit_type) {
case "application/x-www-form-urlencoded":
reset($formvars);
while (list($key, $val) = each($formvars)) {
if (is_array($val) || is_object($val)) {
while (list($cur_key, $cur_val) = each($val)) {
$postdata .= urlencode($key) . "[]=" . urlencode($cur_val) . "&";
}
} else
$postdata .= urlencode($key) . "=" . urlencode($val) . "&";
}
break;
case "multipart/form-data":
$this->_mime_boundary = "Snoopy" . md5(uniqid(microtime()));
reset($formvars);
while (list($key, $val) = each($formvars)) {
if (is_array($val) || is_object($val)) {
while (list($cur_key, $cur_val) = each($val)) {
$postdata .= "--" . $this->_mime_boundary . "\r\n";
$postdata .= "Content-Disposition: form-data; name=\"$key\[\]\"\r\n\r\n";
$postdata .= "$cur_val\r\n";
}
} else {
$postdata .= "--" . $this->_mime_boundary . "\r\n";
$postdata .= "Content-Disposition: form-data; name=\"$key\"\r\n\r\n";
$postdata .= "$val\r\n";
}
}
reset($formfiles);
while (list($field_name, $file_names) = each($formfiles)) {
settype($file_names, "array");
while (list(, $file_name) = each($file_names)) {
if (!is_readable($file_name)) continue;
$fp = fopen($file_name, "r");
$file_content = fread($fp, filesize($file_name));
fclose($fp);
$base_name = basename($file_name);
$postdata .= "--" . $this->_mime_boundary . "\r\n";
$postdata .= "Content-Disposition: form-data; name=\"$field_name\"; filename=\"$base_name\"\r\n\r\n";
$postdata .= "$file_content\r\n";
}
}
$postdata .= "--" . $this->_mime_boundary . "--\r\n";
break;
}
return $postdata;
}
/*======================================================================*\
Function: getResults
Purpose: return the results of a request
Output: string results
\*======================================================================*/
function getResults()
{
return $this->results;
}
}