-
Notifications
You must be signed in to change notification settings - Fork 0
/
mod_mime.c
1090 lines (974 loc) · 36.1 KB
/
mod_mime.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
/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* http_mime.c: Sends/gets MIME headers for requests
*
* Rob McCool
*
*/
#include "apr.h"
#include "apr_strings.h"
#include "apr_lib.h"
#include "apr_hash.h"
#define APR_WANT_STRFUNC
#include "apr_want.h"
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_log.h"
#include "http_request.h"
#include "http_protocol.h"
/* XXXX - fix me / EBCDIC
* there was a cludge here which would use its
* own version apr_isascii(). Indicating that
* on some platforms that might be needed.
*
* #define OS_ASC(c) (c) -- for mere mortals
* or
* #define OS_ASC(c) (ebcdic2ascii[c]) -- for dino's
*
* #define apr_isascii(c) ((OS_ASC(c) & 0x80) == 0)
*/
/* XXXXX - fix me - See note with NOT_PROXY
*/
typedef struct attrib_info {
char *name;
int offset;
} attrib_info;
/* Information to which an extension can be mapped
*/
typedef struct extension_info {
char *forced_type; /* Additional AddTyped stuff */
char *encoding_type; /* Added with AddEncoding... */
char *language_type; /* Added with AddLanguage... */
char *handler; /* Added with AddHandler... */
char *charset_type; /* Added with AddCharset... */
char *input_filters; /* Added with AddInputFilter... */
char *output_filters; /* Added with AddOutputFilter... */
} extension_info;
#define MULTIMATCH_UNSET 0
#define MULTIMATCH_ANY 1
#define MULTIMATCH_NEGOTIATED 2
#define MULTIMATCH_HANDLERS 4
#define MULTIMATCH_FILTERS 8
typedef struct {
apr_hash_t *extension_mappings; /* Map from extension name to
* extension_info structure */
apr_array_header_t *remove_mappings; /* A simple list, walked once */
char *default_language; /* Language if no AddLanguage ext found */
int multimatch; /* Extensions to include in multiview matching
* for filenames, e.g. Filters and Handlers
*/
int use_path_info; /* If set to 0, only use filename.
* If set to 1, append PATH_INFO to filename for
* lookups.
* If set to 2, this value is unset and is
* effectively 0.
*/
} mime_dir_config;
typedef struct param_s {
char *attr;
char *val;
struct param_s *next;
} param;
typedef struct {
const char *type;
apr_size_t type_len;
const char *subtype;
apr_size_t subtype_len;
param *param;
} content_type;
static char tspecial[] = {
'(', ')', '<', '>', '@', ',', ';', ':',
'\\', '"', '/', '[', ']', '?', '=',
'\0'
};
module AP_MODULE_DECLARE_DATA mime_module;
static void *create_mime_dir_config(apr_pool_t *p, char *dummy)
{
mime_dir_config *new = apr_palloc(p, sizeof(mime_dir_config));
new->extension_mappings = NULL;
new->remove_mappings = NULL;
new->default_language = NULL;
new->multimatch = MULTIMATCH_UNSET;
new->use_path_info = 2;
return new;
}
/*
* Overlay one hash table of extension_mappings onto another
*/
static void *overlay_extension_mappings(apr_pool_t *p,
const void *key,
apr_ssize_t klen,
const void *overlay_val,
const void *base_val,
const void *data)
{
const extension_info *overlay_info = (const extension_info *)overlay_val;
const extension_info *base_info = (const extension_info *)base_val;
extension_info *new_info = apr_pmemdup(p, base_info, sizeof(extension_info));
if (overlay_info->forced_type) {
new_info->forced_type = overlay_info->forced_type;
}
if (overlay_info->encoding_type) {
new_info->encoding_type = overlay_info->encoding_type;
}
if (overlay_info->language_type) {
new_info->language_type = overlay_info->language_type;
}
if (overlay_info->handler) {
new_info->handler = overlay_info->handler;
}
if (overlay_info->charset_type) {
new_info->charset_type = overlay_info->charset_type;
}
if (overlay_info->input_filters) {
new_info->input_filters = overlay_info->input_filters;
}
if (overlay_info->output_filters) {
new_info->output_filters = overlay_info->output_filters;
}
return new_info;
}
/* Member is the offset within an extension_info of the pointer to reset
*/
static void remove_items(apr_pool_t *p, apr_array_header_t *remove,
apr_hash_t *mappings)
{
attrib_info *suffix = (attrib_info *) remove->elts;
int i;
for (i = 0; i < remove->nelts; i++) {
extension_info *exinfo = apr_hash_get(mappings,
suffix[i].name,
APR_HASH_KEY_STRING);
if (exinfo && *(const char**)((char *)exinfo + suffix[i].offset)) {
extension_info *copyinfo = exinfo;
exinfo = apr_pmemdup(p, copyinfo, sizeof(*exinfo));
apr_hash_set(mappings, suffix[i].name,
APR_HASH_KEY_STRING, exinfo);
*(const char**)((char *)exinfo + suffix[i].offset) = NULL;
}
}
}
static void *merge_mime_dir_configs(apr_pool_t *p, void *basev, void *addv)
{
mime_dir_config *base = (mime_dir_config *)basev;
mime_dir_config *add = (mime_dir_config *)addv;
mime_dir_config *new = apr_palloc(p, sizeof(mime_dir_config));
if (base->extension_mappings && add->extension_mappings) {
new->extension_mappings = apr_hash_merge(p, add->extension_mappings,
base->extension_mappings,
overlay_extension_mappings,
NULL);
}
else {
if (base->extension_mappings == NULL) {
new->extension_mappings = add->extension_mappings;
}
else {
new->extension_mappings = base->extension_mappings;
}
/* We may not be merging the tables, but if we potentially will change
* an exinfo member, then we are about to trounce it anyways.
* We must have a copy for safety.
*/
if (new->extension_mappings && add->remove_mappings) {
new->extension_mappings =
apr_hash_copy(p, new->extension_mappings);
}
}
if (new->extension_mappings) {
if (add->remove_mappings)
remove_items(p, add->remove_mappings, new->extension_mappings);
}
new->remove_mappings = NULL;
new->default_language = add->default_language ?
add->default_language : base->default_language;
new->multimatch = (add->multimatch != MULTIMATCH_UNSET) ?
add->multimatch : base->multimatch;
if ((add->use_path_info & 2) == 0) {
new->use_path_info = add->use_path_info;
}
else {
new->use_path_info = base->use_path_info;
}
return new;
}
static const char *add_extension_info(cmd_parms *cmd, void *m_,
const char *value_, const char* ext)
{
mime_dir_config *m=m_;
extension_info *exinfo;
int offset = (int) (long) cmd->info;
char *key = apr_pstrdup(cmd->temp_pool, ext);
char *value = apr_pstrdup(cmd->pool, value_);
ap_str_tolower(value);
ap_str_tolower(key);
if (*key == '.') {
++key;
}
if (!m->extension_mappings) {
m->extension_mappings = apr_hash_make(cmd->pool);
exinfo = NULL;
}
else {
exinfo = (extension_info*)apr_hash_get(m->extension_mappings, key,
APR_HASH_KEY_STRING);
}
if (!exinfo) {
exinfo = apr_pcalloc(cmd->pool, sizeof(extension_info));
key = apr_pstrdup(cmd->pool, key);
apr_hash_set(m->extension_mappings, key, APR_HASH_KEY_STRING, exinfo);
}
*(const char**)((char *)exinfo + offset) = value;
return NULL;
}
/*
* As RemoveType should also override the info from TypesConfig, we add an
* empty string as type instead of actually removing the type.
*/
static const char *remove_extension_type(cmd_parms *cmd, void *m_,
const char *ext)
{
return add_extension_info(cmd, m_, "", ext);
}
/*
* Note handler names are un-added with each per_dir_config merge.
* This keeps the association from being inherited, but not
* from being re-added at a subordinate level.
*/
static const char *remove_extension_info(cmd_parms *cmd, void *m_,
const char *ext)
{
mime_dir_config *m = (mime_dir_config *) m_;
attrib_info *suffix;
if (*ext == '.') {
++ext;
}
if (!m->remove_mappings) {
m->remove_mappings = apr_array_make(cmd->pool, 4, sizeof(*suffix));
}
suffix = (attrib_info *)apr_array_push(m->remove_mappings);
suffix->name = apr_pstrdup(cmd->pool, ext);
ap_str_tolower(suffix->name);
suffix->offset = (int) (long) cmd->info;
return NULL;
}
/* The sole bit of server configuration that the MIME module has is
* the name of its config file, so...
*/
static const char *set_types_config(cmd_parms *cmd, void *dummy,
const char *arg)
{
ap_set_module_config(cmd->server->module_config, &mime_module,
(void *)arg);
return NULL;
}
static const char *multiviews_match(cmd_parms *cmd, void *m_,
const char *include)
{
mime_dir_config *m = (mime_dir_config *) m_;
const char *errmsg;
errmsg = ap_check_cmd_context(cmd, NOT_IN_LOCATION);
if (errmsg != NULL) {
return errmsg;
}
if (strcasecmp(include, "Any") == 0) {
if (m->multimatch && (m->multimatch & ~MULTIMATCH_ANY)) {
return "Any is incompatible with NegotiatedOnly, "
"Filters and Handlers";
}
m->multimatch |= MULTIMATCH_ANY;
}
else if (strcasecmp(include, "NegotiatedOnly") == 0) {
if (m->multimatch && (m->multimatch & ~MULTIMATCH_NEGOTIATED)) {
return "NegotiatedOnly is incompatible with Any, "
"Filters and Handlers";
}
m->multimatch |= MULTIMATCH_NEGOTIATED;
}
else if (strcasecmp(include, "Filters") == 0) {
if (m->multimatch && (m->multimatch & (MULTIMATCH_NEGOTIATED
| MULTIMATCH_ANY))) {
return "Filters is incompatible with Any and NegotiatedOnly";
}
m->multimatch |= MULTIMATCH_FILTERS;
}
else if (strcasecmp(include, "Handlers") == 0) {
if (m->multimatch && (m->multimatch & (MULTIMATCH_NEGOTIATED
| MULTIMATCH_ANY))) {
return "Handlers is incompatible with Any and NegotiatedOnly";
}
m->multimatch |= MULTIMATCH_HANDLERS;
}
else {
return apr_psprintf(cmd->pool, "Unrecognized option '%s'", include);
}
return NULL;
}
static const command_rec mime_cmds[] =
{
AP_INIT_ITERATE2("AddCharset", add_extension_info,
(void *)APR_OFFSETOF(extension_info, charset_type), OR_FILEINFO,
"a charset (e.g., iso-2022-jp), followed by one or more "
"file extensions"),
AP_INIT_ITERATE2("AddEncoding", add_extension_info,
(void *)APR_OFFSETOF(extension_info, encoding_type), OR_FILEINFO,
"an encoding (e.g., gzip), followed by one or more file extensions"),
AP_INIT_ITERATE2("AddHandler", add_extension_info,
(void *)APR_OFFSETOF(extension_info, handler), OR_FILEINFO,
"a handler name followed by one or more file extensions"),
AP_INIT_ITERATE2("AddInputFilter", add_extension_info,
(void *)APR_OFFSETOF(extension_info, input_filters), OR_FILEINFO,
"input filter name (or ; delimited names) followed by one or "
"more file extensions"),
AP_INIT_ITERATE2("AddLanguage", add_extension_info,
(void *)APR_OFFSETOF(extension_info, language_type), OR_FILEINFO,
"a language (e.g., fr), followed by one or more file extensions"),
AP_INIT_ITERATE2("AddOutputFilter", add_extension_info,
(void *)APR_OFFSETOF(extension_info, output_filters), OR_FILEINFO,
"output filter name (or ; delimited names) followed by one or "
"more file extensions"),
AP_INIT_ITERATE2("AddType", add_extension_info,
(void *)APR_OFFSETOF(extension_info, forced_type), OR_FILEINFO,
"a mime type followed by one or more file extensions"),
AP_INIT_TAKE1("DefaultLanguage", ap_set_string_slot,
(void*)APR_OFFSETOF(mime_dir_config, default_language), OR_FILEINFO,
"language to use for documents with no other language file extension"),
AP_INIT_ITERATE("MultiviewsMatch", multiviews_match, NULL, OR_FILEINFO,
"NegotiatedOnly (default), Handlers and/or Filters, or Any"),
AP_INIT_ITERATE("RemoveCharset", remove_extension_info,
(void *)APR_OFFSETOF(extension_info, charset_type), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_ITERATE("RemoveEncoding", remove_extension_info,
(void *)APR_OFFSETOF(extension_info, encoding_type), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_ITERATE("RemoveHandler", remove_extension_info,
(void *)APR_OFFSETOF(extension_info, handler), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_ITERATE("RemoveInputFilter", remove_extension_info,
(void *)APR_OFFSETOF(extension_info, input_filters), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_ITERATE("RemoveLanguage", remove_extension_info,
(void *)APR_OFFSETOF(extension_info, language_type), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_ITERATE("RemoveOutputFilter", remove_extension_info,
(void *)APR_OFFSETOF(extension_info, output_filters), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_ITERATE("RemoveType", remove_extension_type,
(void *)APR_OFFSETOF(extension_info, forced_type), OR_FILEINFO,
"one or more file extensions"),
AP_INIT_TAKE1("TypesConfig", set_types_config, NULL, RSRC_CONF,
"the MIME types config file"),
AP_INIT_FLAG("ModMimeUsePathInfo", ap_set_flag_slot,
(void *)APR_OFFSETOF(mime_dir_config, use_path_info), ACCESS_CONF,
"Set to 'yes' to allow mod_mime to use path info for type checking"),
{NULL}
};
static apr_hash_t *mime_type_extensions;
static int mime_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
ap_configfile_t *f;
char l[MAX_STRING_LEN];
const char *types_confname = ap_get_module_config(s->module_config,
&mime_module);
apr_status_t status;
if (!types_confname) {
types_confname = AP_TYPES_CONFIG_FILE;
}
types_confname = ap_server_root_relative(p, types_confname);
if (!types_confname) {
ap_log_error(APLOG_MARK, APLOG_ERR, APR_EBADPATH, s, APLOGNO(01596)
"Invalid mime types config path %s",
(const char *)ap_get_module_config(s->module_config,
&mime_module));
return HTTP_INTERNAL_SERVER_ERROR;
}
if ((status = ap_pcfg_openfile(&f, ptemp, types_confname))
!= APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_ERR, status, s, APLOGNO(01597)
"could not open mime types config file %s.",
types_confname);
return HTTP_INTERNAL_SERVER_ERROR;
}
mime_type_extensions = apr_hash_make(p);
while (!(ap_cfg_getline(l, MAX_STRING_LEN, f))) {
const char *ll = l, *ct;
if (l[0] == '#') {
continue;
}
ct = ap_getword_conf(p, &ll);
while (ll[0]) {
char *ext = ap_getword_conf(p, &ll);
ap_str_tolower(ext);
apr_hash_set(mime_type_extensions, ext, APR_HASH_KEY_STRING, ct);
}
}
ap_cfg_closefile(f);
return OK;
}
static const char *zap_sp(const char *s)
{
if (s == NULL) {
return (NULL);
}
if (*s == '\0') {
return (s);
}
/* skip prefixed white space */
for (; *s == ' ' || *s == '\t' || *s == '\n'; s++)
;
return (s);
}
static char *zap_sp_and_dup(apr_pool_t *p, const char *start,
const char *end, apr_size_t *len)
{
while ((start < end) && apr_isspace(*start)) {
start++;
}
while ((end > start) && apr_isspace(*(end - 1))) {
end--;
}
if (len) {
*len = end - start;
}
return apr_pstrmemdup(p, start, end - start);
}
static int is_token(char c)
{
int res;
res = (apr_isascii(c) && apr_isgraph(c)
&& (strchr(tspecial, c) == NULL)) ? 1 : -1;
return res;
}
static int is_qtext(char c)
{
int res;
res = (apr_isascii(c) && (c != '"') && (c != '\\') && (c != '\n'))
? 1 : -1;
return res;
}
static int is_quoted_pair(const char *s)
{
int res = -1;
int c;
if (((s + 1) != NULL) && (*s == '\\')) {
c = (int) *(s + 1);
if (apr_isascii(c)) {
res = 1;
}
}
return (res);
}
static content_type *analyze_ct(request_rec *r, const char *s)
{
const char *cp, *mp;
char *attribute, *value;
int quoted = 0;
server_rec * ss = r->server;
apr_pool_t * p = r->pool;
content_type *ctp;
param *pp, *npp;
/* initialize ctp */
ctp = (content_type *)apr_palloc(p, sizeof(content_type));
ctp->type = NULL;
ctp->subtype = NULL;
ctp->param = NULL;
mp = s;
/* getting a type */
cp = mp;
while (apr_isspace(*cp)) {
cp++;
}
if (!*cp) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01598)
"mod_mime: analyze_ct: cannot get media type from '%s'",
(const char *) mp);
return (NULL);
}
ctp->type = cp;
do {
cp++;
} while (*cp && (*cp != '/') && !apr_isspace(*cp) && (*cp != ';'));
if (!*cp || (*cp == ';')) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01599)
"Cannot get media type from '%s'",
(const char *) mp);
return (NULL);
}
while (apr_isspace(*cp)) {
cp++;
}
if (*cp != '/') {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01600)
"mod_mime: analyze_ct: cannot get media type from '%s'",
(const char *) mp);
return (NULL);
}
ctp->type_len = cp - ctp->type;
cp++; /* skip the '/' */
/* getting a subtype */
while (apr_isspace(*cp)) {
cp++;
}
if (!*cp) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01601)
"Cannot get media subtype.");
return (NULL);
}
ctp->subtype = cp;
do {
cp++;
} while (*cp && !apr_isspace(*cp) && (*cp != ';'));
ctp->subtype_len = cp - ctp->subtype;
while (apr_isspace(*cp)) {
cp++;
}
if (*cp == '\0') {
return (ctp);
}
/* getting parameters */
cp++; /* skip the ';' */
cp = zap_sp(cp);
if (cp == NULL || *cp == '\0') {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01602)
"Cannot get media parameter.");
return (NULL);
}
mp = cp;
attribute = NULL;
value = NULL;
while (cp != NULL && *cp != '\0') {
if (attribute == NULL) {
if (is_token(*cp) > 0) {
cp++;
continue;
}
else if (*cp == ' ' || *cp == '\t' || *cp == '\n') {
cp++;
continue;
}
else if (*cp == '=') {
attribute = zap_sp_and_dup(p, mp, cp, NULL);
if (attribute == NULL || *attribute == '\0') {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01603)
"Cannot get media parameter.");
return (NULL);
}
cp++;
cp = zap_sp(cp);
if (cp == NULL || *cp == '\0') {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01604)
"Cannot get media parameter.");
return (NULL);
}
mp = cp;
continue;
}
else {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01605)
"Cannot get media parameter.");
return (NULL);
}
}
else {
if (mp == cp) {
if (*cp == '"') {
quoted = 1;
cp++;
}
else {
quoted = 0;
}
}
if (quoted > 0) {
while (quoted && *cp != '\0') {
if (is_qtext(*cp) > 0) {
cp++;
}
else if (is_quoted_pair(cp) > 0) {
cp += 2;
}
else if (*cp == '"') {
cp++;
while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
cp++;
}
if (*cp != ';' && *cp != '\0') {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01606)
"Cannot get media parameter.");
return(NULL);
}
quoted = 0;
}
else {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01607)
"Cannot get media parameter.");
return (NULL);
}
}
}
else {
while (1) {
if (is_token(*cp) > 0) {
cp++;
}
else if (*cp == '\0' || *cp == ';') {
break;
}
else {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01608)
"Cannot get media parameter.");
return (NULL);
}
}
}
value = zap_sp_and_dup(p, mp, cp, NULL);
if (value == NULL || *value == '\0') {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ss, APLOGNO(01609)
"Cannot get media parameter.");
return (NULL);
}
pp = apr_palloc(p, sizeof(param));
pp->attr = attribute;
pp->val = value;
pp->next = NULL;
if (ctp->param == NULL) {
ctp->param = pp;
}
else {
npp = ctp->param;
while (npp->next) {
npp = npp->next;
}
npp->next = pp;
}
quoted = 0;
attribute = NULL;
value = NULL;
if (*cp == '\0') {
break;
}
cp++;
mp = cp;
}
}
return (ctp);
}
/*
* find_ct is the hook routine for determining content-type and other
* MIME-related metadata. It assumes that r->filename has already been
* set and stat has been called for r->finfo. It also assumes that the
* non-path base file name is not the empty string unless it is a dir.
*/
static int find_ct(request_rec *r)
{
mime_dir_config *conf;
apr_array_header_t *exception_list;
char *ext;
const char *fn, *fntmp, *type, *charset = NULL, *resource_name;
int found_metadata = 0;
if (r->finfo.filetype == APR_DIR) {
ap_set_content_type(r, DIR_MAGIC_TYPE);
return OK;
}
if (!r->filename) {
return DECLINED;
}
conf = (mime_dir_config *)ap_get_module_config(r->per_dir_config,
&mime_module);
exception_list = apr_array_make(r->pool, 2, sizeof(char *));
/* If use_path_info is explicitly set to on (value & 1 == 1), append. */
if (conf->use_path_info & 1) {
resource_name = apr_pstrcat(r->pool, r->filename, r->path_info, NULL);
}
else {
resource_name = r->filename;
}
/* Always drop the path leading up to the file name.
*/
if ((fn = ap_strrchr_c(resource_name, '/')) == NULL) {
fn = resource_name;
}
else {
++fn;
}
/* The exception list keeps track of those filename components that
* are not associated with extensions indicating metadata.
* The base name is always the first exception (i.e., "txt.html" has
* a basename of "txt" even though it might look like an extension).
* Leading dots are considered to be part of the base name (a file named
* ".png" is likely not a png file but just a hidden file called png).
*/
fntmp = fn;
while (*fntmp == '.')
fntmp++;
fntmp = ap_strchr_c(fntmp, '.');
if (fntmp) {
ext = apr_pstrmemdup(r->pool, fn, fntmp - fn);
fn = fntmp + 1;
}
else {
ext = apr_pstrdup(r->pool, fn);
fn += strlen(fn);
}
*((const char **)apr_array_push(exception_list)) = ext;
/* Parse filename extensions which can be in any order
*/
while (*fn && (ext = ap_getword(r->pool, &fn, '.'))) {
const extension_info *exinfo = NULL;
int found;
char *extcase;
if (*ext == '\0') { /* ignore empty extensions "bad..html" */
continue;
}
found = 0;
/* Save the ext in extcase before converting it to lower case.
*/
extcase = apr_pstrdup(r->pool, ext);
ap_str_tolower(ext);
if (conf->extension_mappings != NULL) {
exinfo = (extension_info*)apr_hash_get(conf->extension_mappings,
ext, APR_HASH_KEY_STRING);
}
if (exinfo == NULL || !exinfo->forced_type) {
if ((type = apr_hash_get(mime_type_extensions, ext,
APR_HASH_KEY_STRING)) != NULL) {
ap_set_content_type(r, (char*) type);
found = 1;
}
}
if (exinfo != NULL) {
/* empty string is treated as special case for RemoveType */
if (exinfo->forced_type && *exinfo->forced_type) {
ap_set_content_type(r, exinfo->forced_type);
found = 1;
}
if (exinfo->charset_type) {
charset = exinfo->charset_type;
found = 1;
}
if (exinfo->language_type) {
if (!r->content_languages) {
r->content_languages = apr_array_make(r->pool, 2,
sizeof(char *));
}
*((const char **)apr_array_push(r->content_languages))
= exinfo->language_type;
found = 1;
}
if (exinfo->encoding_type) {
if (!r->content_encoding) {
r->content_encoding = exinfo->encoding_type;
}
else {
/* XXX should eliminate duplicate entities
*
* ah no. Order is important and double encoding is neither
* forbidden nor impossible. -- nd
*/
r->content_encoding = apr_pstrcat(r->pool,
r->content_encoding,
", ",
exinfo->encoding_type,
NULL);
}
found = 1;
}
/* The following extensions are not 'Found'. That is, they don't
* make any contribution to metadata negotiation, so they must have
* been explicitly requested by name.
*/
if (exinfo->handler && r->proxyreq == PROXYREQ_NONE) {
r->handler = exinfo->handler;
if (conf->multimatch & MULTIMATCH_HANDLERS) {
found = 1;
}
}
/* XXX Two significant problems; 1, we don't check to see if we are
* setting redundant filters. 2, we insert these in the types
* config hook, which may be too early (dunno.)
*/
if (exinfo->input_filters) {
const char *filter, *filters = exinfo->input_filters;
while (*filters
&& (filter = ap_getword(r->pool, &filters, ';'))) {
ap_add_input_filter(filter, NULL, r, r->connection);
}
if (conf->multimatch & MULTIMATCH_FILTERS) {
found = 1;
}
}
if (exinfo->output_filters) {
const char *filter, *filters = exinfo->output_filters;
while (*filters
&& (filter = ap_getword(r->pool, &filters, ';'))) {
ap_add_output_filter(filter, NULL, r, r->connection);
}
if (conf->multimatch & MULTIMATCH_FILTERS) {
found = 1;
}
}
}
if (found || (conf->multimatch & MULTIMATCH_ANY)) {
found_metadata = 1;
}
else {
*((const char **) apr_array_push(exception_list)) = extcase;
}
}
/*
* Need to set a notes entry on r for unrecognized elements.
* Somebody better claim them! If we did absolutely nothing,
* skip the notes to alert mod_negotiation we are clueless.
*/
if (found_metadata) {
apr_table_setn(r->notes, "ap-mime-exceptions-list",
(void *)exception_list);
}
if (r->content_type) {
content_type *ctp;
int override = 0;
if ((ctp = analyze_ct(r, r->content_type))) {
param *pp = ctp->param;
char *base_content_type = apr_palloc(r->pool, ctp->type_len +
ctp->subtype_len +
sizeof("/"));
char *tmp = base_content_type;
memcpy(tmp, ctp->type, ctp->type_len);
tmp += ctp->type_len;
*tmp++ = '/';
memcpy(tmp, ctp->subtype, ctp->subtype_len);
tmp += ctp->subtype_len;
*tmp = 0;
ap_set_content_type(r, base_content_type);
while (pp != NULL) {
if (charset && !strcmp(pp->attr, "charset")) {
if (!override) {
ap_set_content_type(r,
apr_pstrcat(r->pool,
r->content_type,
"; charset=",
charset,
NULL));
override = 1;
}
}
else {
ap_set_content_type(r,
apr_pstrcat(r->pool,
r->content_type,
"; ", pp->attr,
"=", pp->val,
NULL));
}
pp = pp->next;
}
if (charset && !override) {
ap_set_content_type(r, apr_pstrcat(r->pool, r->content_type,
"; charset=", charset,
NULL));
}
}
}
/* Set default language, if none was specified by the extensions
* and we have a DefaultLanguage setting in force
*/
if (!r->content_languages && conf->default_language) {
const char **new;
if (!r->content_languages) {
r->content_languages = apr_array_make(r->pool, 2, sizeof(char *));
}
new = (const char **)apr_array_push(r->content_languages);
*new = conf->default_language;
}
if (!r->content_type) {
return DECLINED;