/
httpd.c
1765 lines (1591 loc) · 42.3 KB
/
httpd.c
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
/* milli_httpd - pretty small HTTP server
** A combination of
** micro_httpd - really small HTTP server
** and
** mini_httpd - small HTTP server
**
** Copyright 1999,2000 by Jef Poskanzer <jef@acme.com>.
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <arpa/inet.h>
#include <getopt.h>
#include <stdarg.h>
#include <syslog.h>
#include <cy_conf.h>
#include "httpd.h"
#include <bcmnvram.h>
#include <code_pattern.h>
#include <utils.h>
#include <shutils.h>
#include <sys/time.h>
#include <signal.h>
#include <sys/wait.h>
#ifdef HAVE_OPENSSL
#include <openssl/ssl.h>
#endif
#ifdef HAVE_MATRIXSSL
# include <matrixSsl.h>
# include <matrixssl_xface.h>
#endif
#ifdef HAVE_XYSSL
#include <xyssl/havege.h>
#include <xyssl/certs.h>
#include <xyssl/x509.h>
#include <xyssl/ssl.h>
#include <xyssl/net.h>
//#include <xyssl_xface.h>
#endif
#include <error.h>
#include <sys/signal.h>
#ifdef HAVE_IAS
#include <sys/sysinfo.h>
#endif
#define SERVER_NAME "httpd"
#define PROTOCOL "HTTP/1.0"
#define RFC1123FMT "%a, %d %b %Y %H:%M:%S GMT"
#define TIMEOUT 15
/* A multi-family sockaddr. */
typedef union {
struct sockaddr sa;
struct sockaddr_in sa_in;
} usockaddr;
/* Globals. */
#ifdef HAVE_OPENSSL
static SSL *ssl;
#endif
#ifdef FILTER_DEBUG
FILE *debout;
#endif
#if defined(HAVE_OPENSSL) || defined(HAVE_MATRIXSSL) || defined(HAVE_XYSSL)
#define DEFAULT_HTTPS_PORT 443
#define CERT_FILE "/etc/cert.pem"
#define KEY_FILE "/etc/key.pem"
#endif
#ifdef HAVE_MATRIXSSL
extern ssl_t *ssl;
extern sslKeys_t *keys;
#endif
#ifdef HAVE_XYSSL
ssl_context ssl;
int my_ciphers[] = {
TLS1_EDH_RSA_AES_256_SHA,
SSL3_EDH_RSA_DES_168_SHA,
TLS1_RSA_AES_256_SHA,
SSL3_RSA_DES_168_SHA,
SSL3_RSA_RC4_128_SHA,
SSL3_RSA_RC4_128_MD5,
0
};
char *dhm_P =
"E4004C1F94182000103D883A448B3F80"
"2CE4B44A83301270002C20D0321CFD00"
"11CCEF784C26A400F43DFB901BCA7538" "F2C6B176001CF5A0FD16D2C48B1D0C1C" "F6AC8E1DA6BCC3B4E1F96B0564965300" "FFA1D0B601EB2800F489AA512C4B248C" "01F76949A60BB7F00A40B1EAB64BDD48" "E8A700D60B7F1200FA8E77B0A979DABF";
char *dhm_G = "4";
unsigned char session_table[SSL_SESSION_TBL_LEN];
#endif
#define DEFAULT_HTTP_PORT 80
int server_port;
char pid_file[80];
char *server_dir = NULL;
#ifdef HAVE_HTTPS
int do_ssl = 0;
#endif
#ifdef SAMBA_SUPPORT
extern int smb_getlock;
extern int httpd_fork;
void smb_handler()
{
printf("============child exit=====waitting ...====\n");
smb_getlock = 0;
wait(NULL);
printf("wait finish \n");
}
#endif
//static FILE *conn_fp;
static webs_t conn_fp = NULL; // jimmy, https, 8/4/2003
static char auth_userid[AUTH_MAX];
static char auth_passwd[AUTH_MAX];
char auth_realm[AUTH_MAX];
//#ifdef GET_POST_SUPPORT
int post;
//#endif
int auth_fail = 0;
int httpd_level;
char http_client_ip[20];
extern char *get_mac_from_ip(char *ip);
/* Forwards. */
static int initialize_listen_socket(usockaddr * usaP);
static int auth_check(char *user, char *pass, char *dirname, char *authorization);
static void send_error(int status, char *title, char *extra_header, char *text);
static void send_headers(int status, char *title, char *extra_header, char *mime_type, long length, char *attach_file);
static int b64_decode(const char *str, unsigned char *space, int size);
static int match(const char *pattern, const char *string);
static int match_one(const char *pattern, int patternlen, const char *string);
static void handle_request(void);
static int initialize_listen_socket(usockaddr * usaP)
{
int listen_fd;
int i;
memset(usaP, 0, sizeof(usockaddr));
usaP->sa.sa_family = AF_INET;
usaP->sa_in.sin_addr.s_addr = htonl(INADDR_ANY);
usaP->sa_in.sin_port = htons(server_port);
listen_fd = socket(usaP->sa.sa_family, SOCK_STREAM, 0);
if (listen_fd < 0) {
perror("socket");
return -1;
}
(void)fcntl(listen_fd, F_SETFD, 1);
i = 1;
if (setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, (char *)&i, sizeof(i)) < 0) {
perror("setsockopt");
return -1;
}
if (bind(listen_fd, &usaP->sa, sizeof(struct sockaddr_in)) < 0) {
perror("bind");
return -1;
}
if (listen(listen_fd, 1024) < 0) {
perror("listen");
return -1;
}
return listen_fd;
}
static int auth_check(char *user, char *pass, char *dirname, char *authorization)
{
unsigned char authinfo[500];
unsigned char *authpass;
int l;
/* Is this directory unprotected? */
if (!strlen(pass))
/* Yes, let the request go through. */
return 1;
/* Basic authorization info? */
if (!authorization || strncmp(authorization, "Basic ", 6) != 0) {
//send_authenticate( dirname );
ct_syslog(LOG_INFO, httpd_level, "Authentication fail");
return 0;
}
/* Decode it. */
l = b64_decode(&(authorization[6]), authinfo, sizeof(authinfo));
authinfo[l] = '\0';
/* Split into user and password. */
authpass = strchr((char *)authinfo, ':');
if (authpass == (unsigned char *)0) {
/* No colon? Bogus auth info. */
//send_authenticate( dirname );
return 0;
}
*authpass++ = '\0';
char *crypt(const char *, const char *);
/* Is this the right user and password? */
//#ifdef DDM_SUPPORT
char buf1[36];
char buf2[36];
char *enc1;
char *enc2;
memdebug_enter();
enc1 = crypt(authinfo, (unsigned char *)user);
if (strcmp(enc1, user)) {
return 0;
}
enc2 = crypt(authpass, (unsigned char *)pass);
if (strcmp(enc2, pass)) {
return 0;
}
memdebug_leave();
if (strcmp(enc1, user) == 0 && strcmp(enc2, pass) == 0) {
return 1;
}
//#else
// if (strcmp (auth_passwd, authpass) == 0)
// return 1;
//#endif
//send_authenticate( dirname );
return 1;
}
void send_authenticate(char *realm)
{
char header[10000];
(void)snprintf(header, sizeof(header), "WWW-Authenticate: Basic realm=\"%s\"", realm);
send_error(401, "Unauthorized", header,
#if defined(HAVE_BUFFALO) && defined(HAVE_IAS)
"Authorization required. please note that the default username is \"admin\" in all newer releases");
#else
"Authorization required. please note that the default username is \"root\" in all newer releases");
#endif
}
static void send_error(int status, char *title, char *extra_header, char *text)
{
// jimmy, https, 8/4/2003, fprintf -> wfprintf, fflush -> wfflush
send_headers(status, title, extra_header, "text/html", 0, NULL);
(void)wfprintf(conn_fp, "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#cc9999\"><H4>%d %s</H4>\n", status, title, status, title);
(void)wfprintf(conn_fp, "%s\n", text);
(void)wfprintf(conn_fp, "</BODY></HTML>\n");
(void)wfflush(conn_fp);
}
static void send_headers(int status, char *title, char *extra_header, char *mime_type, long length, char *attach_file)
{
time_t now;
char timebuf[100];
wfprintf(conn_fp, "%s %d %s\r\n", PROTOCOL, status, title);
if (mime_type != (char *)0)
wfprintf(conn_fp, "Content-Type: %s\r\n", mime_type);
wfprintf(conn_fp, "Server: %s\r\n", SERVER_NAME);
now = time((time_t *) 0);
strftime(timebuf, sizeof(timebuf), RFC1123FMT, gmtime(&now));
wfprintf(conn_fp, "Date: %s\r\n", timebuf);
wfprintf(conn_fp, "Connection: close\r\n");
wfprintf(conn_fp, "Cache-Control: no-store, no-cache, must-revalidate\r\n");
wfprintf(conn_fp, "Cache-Control: post-check=0, pre-check=0\r\n");
wfprintf(conn_fp, "Pragma: no-cache\r\n");
if (attach_file)
wfprintf(conn_fp, "Content-Disposition: attachment; filename=%s\r\n", attach_file);
if (extra_header != (char *)0 && *extra_header)
wfprintf(conn_fp, "%s\r\n", extra_header);
if (length != 0)
wfprintf(conn_fp, "Content-Length: %ld\r\n", length);
wfprintf(conn_fp, "\r\n");
}
/* Base-64 decoding. This represents binary data as printable ASCII
** characters. Three 8-bit binary bytes are turned into four 6-bit
** values, like so:
**
** [11111111] [22222222] [33333333]
**
** [111111] [112222] [222233] [333333]
**
** Then the 6-bit values are represented using the characters "A-Za-z0-9+/".
*/
static int b64_decode_table[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 00-0F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10-1F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, /* 20-2F */
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, /* 30-3F */
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 40-4F */
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, /* 50-5F */
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, /* 60-6F */
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, /* 70-7F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 80-8F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 90-9F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A0-AF */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* B0-BF */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* C0-CF */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* D0-DF */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* E0-EF */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* F0-FF */
};
/* Do base-64 decoding on a string. Ignore any non-base64 bytes.
** Return the actual number of bytes generated. The decoded size will
** be at most 3/4 the size of the encoded, and may be smaller if there
** are padding characters (blanks, newlines).
*/
static int b64_decode(const char *str, unsigned char *space, int size)
{
const char *cp;
int space_idx, phase;
int d, prev_d = 0;
unsigned char c;
space_idx = 0;
phase = 0;
for (cp = str; *cp != '\0'; ++cp) {
d = b64_decode_table[(int)*cp];
if (d != -1) {
switch (phase) {
case 0:
++phase;
break;
case 1:
c = ((prev_d << 2) | ((d & 0x30) >> 4));
if (space_idx < size)
space[space_idx++] = c;
++phase;
break;
case 2:
c = (((prev_d & 0xf) << 4) | ((d & 0x3c) >> 2));
if (space_idx < size)
space[space_idx++] = c;
++phase;
break;
case 3:
c = (((prev_d & 0x03) << 6) | d);
if (space_idx < size)
space[space_idx++] = c;
phase = 0;
break;
}
prev_d = d;
}
}
return space_idx;
}
/* Simple shell-style filename matcher. Only does ? * and **, and multiple
** patterns separated by |. Returns 1 or 0.
*/
static int match(const char *pattern, const char *string)
{
const char *or;
for (;;) {
or = strchr(pattern, '|');
if (or == (char *)0)
return match_one(pattern, strlen(pattern), string);
if (match_one(pattern, or - pattern, string))
return 1;
pattern = or + 1;
}
}
static int match_one(const char *pattern, int patternlen, const char *string)
{
const char *p;
for (p = pattern; p - pattern < patternlen; ++p, ++string) {
if (*p == '?' && *string != '\0')
continue;
if (*p == '*') {
int i, pl;
++p;
if (*p == '*') {
/* Double-wildcard matches anything. */
++p;
i = strlen(string);
} else
/* Single-wildcard matches anything but slash. */
i = strcspn(string, "/");
pl = patternlen - (p - pattern);
for (; i >= 0; --i)
if (match_one(p, pl, &(string[i])))
return 1;
return 0;
}
if (*p != *string)
return 0;
}
if (*string == '\0')
return 1;
return 0;
}
static void do_file_2(struct mime_handler *handler, char *path, webs_t stream, char *query, char *attach) //jimmy, https, 8/4/2003
{
FILE *web = getWebsFile(path);
if (web == NULL) {
FILE *fp;
int c;
if (!(fp = fopen(path, "rb")))
return;
fseek(fp, 0, SEEK_END);
if (!handler->send_headers)
send_headers(200, "Ok", handler->extra_header, handler->mime_type, ftell(fp), attach);
fseek(fp, 0, SEEK_SET);
while ((c = getc(fp)) != EOF)
wfputc(c, stream); // jimmy, https, 8/4/2003
fclose(fp);
} else {
int len = getWebsFileLen(path);
if (!handler->send_headers)
send_headers(200, "Ok", handler->extra_header, handler->mime_type, len, attach);
int a;
char buf[128];
int tot = 0;
for (a = 0; a < len / 128; a++) {
tot += fread(buf, 1, 128, web);
wfwrite(buf, 128, 1, stream);
}
len = fread(buf, 1, (len % 128), web);
tot += len;
wfwrite(buf, len, 1, stream);
fclose(web);
}
}
void
//do_file(char *path, FILE *stream)
do_file(struct mime_handler *handler, char *path, webs_t stream, char *query) //jimmy, https, 8/4/2003
{
do_file_2(handler, path, stream, query, NULL);
}
void do_file_attach(struct mime_handler *handler, char *path, webs_t stream, char *query, char *attachment) //jimmy, https, 8/4/2003
{
do_file_2(handler, path, stream, query, attachment);
}
#ifdef HSIAB_SUPPORT
static char * // add by jimmy 2003-5-13
get_aaa_url(int inout_mode, char *client_ip)
{
static char line[MAX_BUF_LEN];
char cmd[MAX_BUF_LEN];
strcpy(line, "");
if (inout_mode == 0)
snprintf(cmd, sizeof(cmd), "GET aaa_login_url %s", client_ip);
else
snprintf(cmd, sizeof(cmd), "GET aaa_logout_url %s", client_ip);
send_command(cmd, line);
return line;
}
char * // add by honor 2003-04-16, modify by jimmy 2003-05-13
get_client_ip(int conn_fp)
{
struct sockaddr_in sa;
int len = sizeof(struct sockaddr_in);
static char ip[20];
getpeername(conn_fp, (struct sockaddr *)&sa, &len);
char client[32];
char *peer = inet_ntop(AF_INET, &sa.sin_addr, client, 16);
strcpy(ip, peer);
return (ip);
}
#endif
static int check_connect_type(void)
{
struct wl_assoc_mac *wlmac = NULL;
int count_wl = 0;
int i, j, ret = 0;
char temp[32];
int c = get_wl_instances();
for (j = 0; j < c; j++) {
sprintf(temp, "wl%d_web_filter", j);
if (nvram_invmatch(temp, "1"))
continue;
wlmac = get_wl_assoc_mac(j, &count_wl);
for (i = 0; i < count_wl; i++) {
if (!strcmp(wlmac[i].mac, nvram_safe_get("http_client_mac"))) {
cprintf("Can't accept wireless access\n");
ret = -1;
}
}
free(wlmac);
}
return ret;
}
int containsstring(char *source, char *cmp)
{
if (cmp == NULL || source == NULL)
return 0;
int slen = strlen(source);
int clen = strlen(cmp);
if (slen < clen)
return 0;
int i;
for (i = 0; i < slen - clen; i++) {
int a;
int r = 0;
for (a = 0; a < clen; a++)
if (source[i + a] != cmp[a])
r++;
if (!r)
return 1;
}
return 0;
}
static char *last_log_ip = NULL;
static int registered = -1;
static int registered_real = -1;
char *request_url = NULL;
#ifdef HAVE_IAS
char ias_sid[20];
char ias_http_client_mac[20];
int ias_sid_timeout;
void ias_sid_set();
int ias_sid_valid();
#endif
#define LINE_LEN 10000
static void handle_request(void)
{
char *query;
char *cur;
char *method, *path, *protocol, *authorization, *boundary, *referer, *host, *useragent, *language;
char *cp;
char *file = NULL;
FILE *exec;
int len;
struct mime_handler *handler;
int cl = 0, count, flags;
char line[LINE_LEN];
/* Initialize the request variables. */
authorization = referer = boundary = host = NULL;
bzero(line, sizeof line);
memset(line, 0, LINE_LEN);
/* Parse the first line of the request. */
if (wfgets(line, LINE_LEN, conn_fp) == (char *)0) { //jimmy,https,8/4/2003
send_error(400, "Bad Request", (char *)0, "No request found.");
return;
}
/* To prevent http receive https packets, cause http crash (by honor 2003/09/02) */
if (strncasecmp(line, "GET", 3) && strncasecmp(line, "POST", 4)) {
return;
}
method = path = line;
strsep(&path, " ");
if (!path) { // Avoid http server crash, added by honor 2003-12-08
send_error(400, "Bad Request", (char *)0, "Can't parse request.");
return;
}
while (*path == ' ')
path++;
protocol = path;
strsep(&protocol, " ");
if (!protocol) { // Avoid http server crash, added by honor 2003-12-08
send_error(400, "Bad Request", (char *)0, "Can't parse request.");
return;
}
while (*protocol == ' ')
protocol++;
cp = protocol;
strsep(&cp, " ");
cur = protocol + strlen(protocol) + 1;
/* Parse the rest of the request headers. */
while (wfgets(cur, line + LINE_LEN - cur, conn_fp) != 0) //jimmy,https,8/4/2003
{
if (strcmp(cur, "\n") == 0 || strcmp(cur, "\r\n") == 0) {
break;
} else if (strncasecmp(cur, "Authorization:", 14) == 0) {
cp = &cur[14];
cp += strspn(cp, " \t");
authorization = cp;
cur = cp + strlen(cp) + 1;
} else if (strncasecmp(cur, "Referer:", 8) == 0) {
cp = &cur[8];
cp += strspn(cp, " \t");
referer = cp;
cur = cp + strlen(cp) + 1;
} else if (strncasecmp(cur, "Host:", 5) == 0) {
cp = &cur[5];
cp += strspn(cp, " \t");
host = cp;
cur = cp + strlen(cp) + 1;
} else if (strncasecmp(cur, "Content-Length:", 15) == 0) {
cp = &cur[15];
cp += strspn(cp, " \t");
cl = strtoul(cp, NULL, 0);
} else if ((cp = strstr(cur, "boundary="))) {
boundary = &cp[9];
for (cp = cp + 9; *cp && *cp != '\r' && *cp != '\n'; cp++) ;
*cp = '\0';
cur = ++cp;
} else if (strncasecmp(cur, "User-Agent:", 11) == 0) {
cp = &cur[11];
cp += strspn(cp, " \t");
useragent = cp;
cur = cp + strlen(cp) + 1;
} else if (strncasecmp(cur, "Accept-Language:", 16) == 0) {
cp = &cur[17];
cp += strspn(cp, " \t");
language = cp;
cur = cp + strlen(cp) + 1;
}
}
if (strcasecmp(method, "get") != 0 && strcasecmp(method, "post") != 0) {
send_error(501, "Not Implemented", (char *)0, "That method is not implemented.");
return;
}
if (path[0] != '/') {
send_error(400, "Bad Request", (char *)0, "Bad filename.");
return;
}
file = &(path[1]);
len = strlen(file);
if (file[0] == '/' || strcmp(file, "..") == 0 || strncmp(file, "../", 3) == 0 || strstr(file, "/../") != (char *)0 || strcmp(&(file[len - 3]), "/..") == 0) {
send_error(400, "Bad Request", (char *)0, "Illegal filename.");
return;
}
int nodetect = 0;
if (nvram_match("status_auth", "0") && endswith(file, "Info.htm"))
nodetect = 1;
if (nvram_match("no_crossdetect", "1"))
nodetect = 1;
#ifdef HAVE_IAS
if (nvram_match("ias_startup", "3") || nvram_match("ias_startup", "2")) {
nodetect = 1;
typedef struct {
char *iso;
char *mapping;
char *countryext;
} ISOMAP;
ISOMAP isomap[] = {
{
"de", "german"}, //
{
"es", "spanish"}, //
{
"fr", "french"}, //
{
"hr", "croatian"}, //
{
"hu", "hungarian"}, //
{
"nl", "dutch"}, //
{
"it", "italian"}, //
{
"lv", "latvian"}, //
{
"jp", "japanese"}, //
{
"pl", "polish"}, //
{
"pt", "portuguese_braz"}, //
{
"ro", "romanian"}, //
{
"ru", "russian", "RU"}, //
{
"sl", "slovenian"}, //
{
"sr", "serbian"}, //
{
"sv", "swedish"}, //
{
"zh", "chinese_simplified"}, //
{
"tr", "turkish"}, //
NULL
};
if (nvram_match("langprop", "") || nvram_get("langprop") == NULL) {
int cnt = 0;
nvram_set("langprop", "english");
while (isomap[cnt].iso != NULL) {
if (strncasecmp(language, isomap[cnt].iso, 2) == 0) {
nvram_set("langprop", isomap[cnt].mapping);
if (isomap[cnt].countryext)
nvram_set("country", isomap[cnt].countryext);
break;
}
cnt++;
}
}
}
#endif
if (referer && host && nodetect == 0) {
int i;
int hlen = strlen(host);
int rlen = strlen(referer);
int slashs = 0;
for (i = 0; i < rlen; i++) {
if (referer[i] == '/')
slashs++;
if (slashs == 2) {
i++;
break;
}
}
if (slashs == 2) {
int a;
int c = 0;
for (a = 0; a < hlen; a++)
if (host[a] == ' ' || host[a] == '\r' || host[a] == '\n' || host[a] == '\t')
host[a] = 0;
hlen = strlen(host);
for (a = i; a < rlen; a++) {
if (referer[a] == '/') {
send_error(400, "Bad Request", (char *)0, "Cross Site Action detected!");
return;
}
if (host[c++] != referer[a]) {
send_error(400, "Bad Request", (char *)0, "Cross Site Action detected!");
return;
}
if (c == hlen) {
a++;
break;
}
}
if (c != hlen || referer[a] != '/') {
send_error(400, "Bad Request", (char *)0, "Cross Site Action detected!");
return;
}
}
}
// seg change for status site
#ifdef HAVE_REGISTER
if (registered_real == -1) {
registered_real = isregistered_real();
}
if (!registered_real)
registered = isregistered();
else
registered = registered_real;
#endif
// save the originally requested url
if (request_url) // ahm, we should check for null
free(request_url);
request_url = safe_malloc(len + 1);
strcpy(request_url, file);
#ifdef HAVE_SKYTRON
if (file[0] == '\0' || file[len - 1] == '/') {
file = "setupindex.asp";
}
#else
#ifdef HAVE_BUFFALO
#ifdef HAVE_IAS
int ias_startup = atoi(nvram_safe_get("ias_startup"));
int ias_detected = 0;
char redirect_path[48];
if (ias_startup > 1) {
if (endswith(file, "?ias_detect")) {
ias_detected = 1;
fprintf(stderr, "[HTTP PATH] %s detected (%d)\n", file, ias_startup);
}
if (!endswith(file, ".js") && !endswith(file, "detect.asp")
&& ias_detected == 0 && nvram_match("ias_startup", "3")) {
fprintf(stderr, "[HTTP PATH] %s redirect\n", file);
sprintf(redirect_path, "Location: http://%s/detect.asp", nvram_get("lan_ipaddr"));
send_headers(302, "Found", redirect_path, "", 0, NULL);
return;
} else if (ias_detected == 1) {
fprintf(stderr, "[HTTP PATH] %s redirected\n", file);
nvram_set("ias_startup", "2");
}
}
if (!ias_sid_valid()
&& (endswith(file, "InternetAtStart.asp") || endswith(file, "detect.asp") || endswith(file, "?ias_detect"))
&& strstr(useragent, "Android"))
ias_sid_set();
char hostname[32];
if (strlen(host) < 32 && ias_detected == 1 && (nvram_match("ias_dnsresp", "1"))) {
strncpy(hostname, host, strspn(host, "123456789.:"));
if (!strcmp(hostname, nvram_get("lan_ipaddr"))) {
nvram_unset("ias_dnsresp");
sysprintf("iptables -t nat -D PREROUTING -i br0 -p udp --dport 53 -j DNAT --to %s:55300", nvram_get("lan_ipaddr"));
char buf[128];
char call[64];
int pid;
char *statusfile = "/tmp/.ias_status";
FILE *fp;
sprintf(call, "ps | grep \"dns_responder\" > %s", statusfile);
system(call);
fp = fopen(statusfile, "r");
if (fp) {
while (fgets(buf, sizeof(buf), fp)) {
if (strstr(buf, nvram_get("lan_ipaddr"))) {
if (sscanf(buf, "%d ", &pid)) {
sprintf(call, "kill %d", pid);
system(call);
}
}
}
fclose(fp);
unlink(statusfile);
}
}
}
#endif
#endif
if (file[0] == '\0' || file[len - 1] == '/') {
{
if (server_dir != NULL && strcmp(server_dir, "/www")) // to allow to use router as a WEB server
{
file = "index.htm";
} else {
#ifdef HAVE_IAS
file = "index.asp";
#else
if (nvram_invmatch("status_auth", "0"))
file = "Info.htm";
else
file = "index.asp";
#endif
}
}
} else {
{
if (nvram_invmatch("status_auth", "1"))
if (strcmp(file, "Info.htm") == 0)
file = "index.asp";
}
}
#endif
#if 0
if (containsstring(file, "cgi-bin")) {
auth_fail = 0;
if (!do_auth(conn_fp, auth_userid, auth_passwd, auth_realm, authorization, auth_check))
auth_fail = 1;
query = NULL;
if (check_connect_type() < 0) {
send_error(401, "Bad Request", (char *)0, "Can't use wireless interface to access GUI.");
return;
}
if (auth_fail == 1) {
send_authenticate(auth_realm);
auth_fail = 0;
return;
}
if (strcasecmp(method, "post") == 0) {
query = safe_malloc(10000);
if ((count = wfread(query, 1, cl, conn_fp))) {
query[count] = '\0';;
cl -= strlen(query);
} else {
free(query);
query = NULL;
}
#if defined(linux)
#ifdef HAVE_HTTPS
if (!do_ssl && (flags = fcntl(fileno(conn_fp->fp), F_GETFL)) != -1 && fcntl(fileno(conn_fp->fp), F_SETFL, flags | O_NONBLOCK) != -1) {
/* Read up to two more characters */
if (fgetc(conn_fp->fp) != EOF)
(void)fgetc(conn_fp->fp);
fcntl(fileno(conn_fp->fp), F_SETFL, flags);
}
#else
if ((flags = fcntl(fileno(conn_fp->fp), F_GETFL)) != -1 && fcntl(fileno(conn_fp->fp), F_SETFL, flags | O_NONBLOCK) != -1) {
/* Read up to two more characters */
if (fgetc(conn_fp->fp) != EOF)
(void)fgetc(conn_fp->fp);
fcntl(fileno(conn_fp->fp), F_SETFL, flags);
}
#endif
#endif
}
exec = fopen("/tmp/exec.tmp", "wb");
fprintf(exec, "export REQUEST_METHOD=\"%s\"\n", method);
if (query)
fprintf(exec, "/bin/sh %s/%s</tmp/exec.query\n", server_dir != NULL ? server_dir : "/www", file);
else
fprintf(exec, "/%s/%s\n", server_dir != NULL ? server_dir : "/www", file);
fclose(exec);
if (query) {
exec = fopen("/tmp/exec.query", "wb");
fprintf(exec, "%s\n", query);
free(query);
fclose(exec);
}
chmod("/tmp/exec.tmp", 0700);
system2("/tmp/exec.tmp>/tmp/shellout.asp");
do_ej(NULL, "/tmp/shellout.asp", conn_fp, "");
unlink("/tmp/shellout.asp");
unlink("/tmp/exec.tmp");
unlink("/tmp/exec.query");
} else
#endif