forked from fdintino/nginx-upload-module
-
Notifications
You must be signed in to change notification settings - Fork 36
/
Copy pathngx_http_upload_module.c
4301 lines (3429 loc) · 135 KB
/
ngx_http_upload_module.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
/*
* Copyright (C) 2006, 2008 Valery Kholodkov
* Client body reception code Copyright (c) 2002-2007 Igor Sysoev
* Temporary file name generation code Copyright (c) 2002-2007 Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>
#if nginx_version >= 1011002
#include <ngx_md5.h>
typedef ngx_md5_t MD5_CTX;
#define MD5Init ngx_md5_init
#define MD5Update ngx_md5_update
#define MD5Final ngx_md5_final
#define MD5_DIGEST_LENGTH 16
#include <openssl/sha.h>
#else
#if (NGX_HAVE_OPENSSL_MD5_H)
#include <openssl/md5.h>
#else
#include <md5.h>
#endif
#if (NGX_OPENSSL_MD5)
#define MD5Init MD5_Init
#define MD5Update MD5_Update
#define MD5Final MD5_Final
#endif
#if (NGX_HAVE_OPENSSL_SHA1_H)
#include <openssl/sha.h>
#else
#include <sha.h>
#endif
#endif
#define MULTIPART_FORM_DATA_STRING "multipart/form-data"
#define BOUNDARY_STRING "boundary="
#define CONTENT_DISPOSITION_STRING "Content-Disposition:"
#define CONTENT_TYPE_STRING "Content-Type:"
#define CONTENT_RANGE_STRING "Content-Range:"
#define X_CONTENT_RANGE_STRING "X-Content-Range:"
#define SESSION_ID_STRING "Session-ID:"
#define X_SESSION_ID_STRING "X-Session-ID:"
#define FORM_DATA_STRING "form-data"
#define ATTACHMENT_STRING "attachment"
#define FILENAME_STRING "filename=\""
#define FIELDNAME_STRING "name=\""
#define BYTES_UNIT_STRING "bytes "
#define NGX_UPLOAD_MALFORMED -11
#define NGX_UPLOAD_NOMEM -12
#define NGX_UPLOAD_IOERROR -13
#define NGX_UPLOAD_SCRIPTERROR -14
#define NGX_UPLOAD_TOOLARGE -15
#ifndef NGX_HTTP_V2
#define NGX_HTTP_V2 0
#endif
/*
* State of multipart/form-data parser
*/
typedef enum {
upload_state_boundary_seek,
upload_state_after_boundary,
upload_state_headers,
upload_state_data,
upload_state_finish
} upload_state_t;
/*
* Range
*/
typedef struct {
off_t start, end, total;
} ngx_http_upload_range_t;
/*
* State of range merger
*/
typedef struct {
ngx_buf_t *in_buf;
ngx_buf_t *out_buf;
ngx_http_upload_range_t current_range_n;
off_t *parser_state;
ngx_log_t *log;
u_char *range_header_buffer;
u_char *range_header_buffer_end;
u_char **range_header_buffer_pos;
unsigned int found_lower_bound:1;
unsigned int complete_ranges:1;
unsigned int first_range:1;
} ngx_http_upload_merger_state_t;
/*
* Template for a field to generate in output form
*/
typedef struct {
ngx_table_elt_t value;
ngx_array_t *field_lengths;
ngx_array_t *field_values;
ngx_array_t *value_lengths;
ngx_array_t *value_values;
} ngx_http_upload_field_template_t;
/*
* Template for a header
*/
typedef struct {
ngx_http_complex_value_t *name;
ngx_http_complex_value_t *value;
} ngx_http_upload_header_template_t;
/*
* Filter for fields in output form
*/
typedef struct {
#if (NGX_PCRE)
ngx_regex_t *regex;
ngx_int_t ncaptures;
#else
ngx_str_t text;
#endif
} ngx_http_upload_field_filter_t;
typedef struct {
ngx_path_t *path;
ngx_http_complex_value_t dynamic;
unsigned is_dynamic:1;
} ngx_http_upload_path_t;
/*
* Upload cleanup record
*/
typedef struct ngx_http_upload_cleanup_s {
ngx_fd_t fd;
u_char *filename;
ngx_http_headers_out_t *headers_out;
ngx_array_t *cleanup_statuses;
ngx_log_t *log;
unsigned int aborted:1;
} ngx_upload_cleanup_t;
/*
* Upload configuration for specific location
*/
typedef struct {
ngx_str_t url;
ngx_http_complex_value_t *url_cv;
ngx_http_upload_path_t *state_store_path;
ngx_http_upload_path_t *store_path;
ngx_uint_t store_access;
size_t buffer_size;
size_t merge_buffer_size;
size_t range_header_buffer_size;
size_t max_header_len;
size_t max_output_body_len;
off_t max_file_size;
ngx_array_t *field_templates;
ngx_array_t *aggregate_field_templates;
ngx_array_t *field_filters;
ngx_array_t *cleanup_statuses;
ngx_array_t *header_templates;
ngx_flag_t forward_args;
ngx_flag_t tame_arrays;
ngx_flag_t resumable_uploads;
ngx_flag_t empty_field_names;
size_t limit_rate;
unsigned int md5:1;
unsigned int sha1:1;
unsigned int sha256:1;
unsigned int sha512:1;
unsigned int crc32:1;
} ngx_http_upload_loc_conf_t;
typedef struct ngx_http_upload_md5_ctx_s {
MD5_CTX md5;
u_char md5_digest[MD5_DIGEST_LENGTH * 2];
} ngx_http_upload_md5_ctx_t;
typedef struct ngx_http_upload_sha1_ctx_s {
SHA_CTX sha1;
u_char sha1_digest[SHA_DIGEST_LENGTH * 2];
} ngx_http_upload_sha1_ctx_t;
typedef struct ngx_http_upload_sha256_ctx_s {
SHA256_CTX sha256;
u_char sha256_digest[SHA256_DIGEST_LENGTH * 2];
} ngx_http_upload_sha256_ctx_t;
typedef struct ngx_http_upload_sha512_ctx_s {
SHA512_CTX sha512;
u_char sha512_digest[SHA512_DIGEST_LENGTH * 2];
} ngx_http_upload_sha512_ctx_t;
struct ngx_http_upload_ctx_s;
/*
* Request body data handler
*/
typedef ngx_int_t (*ngx_http_request_body_data_handler_pt)
(struct ngx_http_upload_ctx_s*, u_char *, u_char*);
/*
* Upload module context
*/
typedef struct ngx_http_upload_ctx_s {
ngx_str_t session_id;
ngx_str_t boundary;
u_char *boundary_start;
u_char *boundary_pos;
upload_state_t state;
u_char *header_accumulator;
u_char *header_accumulator_end;
u_char *header_accumulator_pos;
ngx_str_t field_name;
ngx_str_t file_name;
ngx_str_t content_type;
ngx_str_t content_range;
ngx_http_upload_range_t content_range_n;
ngx_uint_t ordinal;
u_char *output_buffer;
u_char *output_buffer_end;
u_char *output_buffer_pos;
u_char *merge_buffer;
u_char *range_header_buffer;
u_char *range_header_buffer_pos;
u_char *range_header_buffer_end;
ngx_http_request_body_data_handler_pt data_handler;
ngx_int_t (*start_part_f)(struct ngx_http_upload_ctx_s *upload_ctx);
void (*finish_part_f)(struct ngx_http_upload_ctx_s *upload_ctx);
void (*abort_part_f)(struct ngx_http_upload_ctx_s *upload_ctx);
ngx_int_t (*flush_output_buffer_f)(struct ngx_http_upload_ctx_s *upload_ctx, u_char *buf, size_t len);
ngx_http_request_t *request;
ngx_log_t *log;
ngx_file_t output_file;
ngx_file_t state_file;
ngx_chain_t *chain;
ngx_chain_t *last;
ngx_chain_t *checkpoint;
ngx_chain_t *to_write;
size_t output_body_len;
size_t limit_rate;
ssize_t received;
ngx_pool_cleanup_t *cln;
ngx_http_upload_md5_ctx_t *md5_ctx;
ngx_http_upload_sha1_ctx_t *sha1_ctx;
ngx_http_upload_sha256_ctx_t *sha256_ctx;
ngx_http_upload_sha512_ctx_t *sha512_ctx;
uint32_t crc32;
ngx_path_t *store_path;
ngx_path_t *state_store_path;
unsigned int first_part:1;
unsigned int discard_data:1;
unsigned int is_file:1;
unsigned int partial_content:1;
unsigned int prevent_output:1;
unsigned int calculate_crc32:1;
unsigned int started:1;
unsigned int unencoded:1;
unsigned int no_content:1;
unsigned int raw_input:1;
} ngx_http_upload_ctx_t;
static ngx_int_t ngx_http_upload_test_expect(ngx_http_request_t *r);
#if (NGX_HTTP_V2)
static void ngx_http_upload_read_event_handler(ngx_http_request_t *r);
#endif
static ngx_int_t ngx_http_upload_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_upload_options_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_upload_body_handler(ngx_http_request_t *r);
static void *ngx_http_upload_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_upload_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_int_t ngx_http_upload_add_variables(ngx_conf_t *cf);
static ngx_int_t ngx_http_upload_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_md5_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_sha1_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_sha256_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_sha512_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_file_size_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static void ngx_http_upload_content_range_variable_set(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_content_range_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_crc32_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_upload_uint_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static char *ngx_http_upload_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_int_t
ngx_http_upload_process_field_templates(ngx_http_request_t *r,
ngx_http_upload_field_template_t *t, ngx_str_t *field_name, ngx_str_t *field_value);
static ngx_int_t ngx_http_upload_start_handler(ngx_http_upload_ctx_t *u);
static void ngx_http_upload_finish_handler(ngx_http_upload_ctx_t *u);
static void ngx_http_upload_abort_handler(ngx_http_upload_ctx_t *u);
static ngx_int_t ngx_http_upload_flush_output_buffer(ngx_http_upload_ctx_t *u,
u_char *buf, size_t len);
static ngx_int_t ngx_http_upload_append_field(ngx_http_upload_ctx_t *u,
ngx_str_t *name, ngx_str_t *value);
static ngx_int_t ngx_http_upload_merge_ranges(ngx_http_upload_ctx_t *u, ngx_http_upload_range_t *range_n);
static ngx_int_t ngx_http_upload_parse_range(ngx_str_t *range, ngx_http_upload_range_t *range_n);
static void ngx_http_read_upload_client_request_body_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_do_read_upload_client_request_body(ngx_http_request_t *r);
static ngx_int_t ngx_http_process_request_body(ngx_http_request_t *r, ngx_chain_t *body);
static ngx_int_t ngx_http_read_upload_client_request_body(ngx_http_request_t *r);
static char *ngx_http_upload_set_form_field(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static ngx_int_t ngx_http_upload_eval_path(ngx_http_request_t *r);
static ngx_int_t ngx_http_upload_eval_state_path(ngx_http_request_t *r);
static char *ngx_http_upload_pass_form_field(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_upload_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_upload_merge_path_value(ngx_conf_t *cf, ngx_http_upload_path_t **path, ngx_http_upload_path_t *prev,
ngx_path_init_t *init);
static char *ngx_http_upload_cleanup(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static void ngx_upload_cleanup_handler(void *data);
#if defined nginx_version && nginx_version >= 7052
static ngx_path_init_t ngx_http_upload_temp_path = {
ngx_string(NGX_HTTP_PROXY_TEMP_PATH), { 1, 2, 0 }
};
#endif
/*
* upload_init_ctx
*
* Initialize upload context. Memory for upload context which is being passed
* as upload_ctx parameter could be allocated anywhere and should not be freed
* prior to upload_shutdown_ctx call.
*
* IMPORTANT:
*
* After initialization the following routine SHOULD BE called:
*
* upload_parse_content_type -- to assign part boundary
*
* Parameter:
* upload_ctx -- upload context which is being initialized
*
*/
static void upload_init_ctx(ngx_http_upload_ctx_t *upload_ctx);
/*
* upload_shutdown_ctx
*
* Shutdown upload context. Discard all remaining data and
* free all memory associated with upload context.
*
* Parameter:
* upload_ctx -- upload context which is being shut down
*
*/
static void upload_shutdown_ctx(ngx_http_upload_ctx_t *upload_ctx);
/*
* upload_start
*
* Starts multipart stream processing. Initializes internal buffers
* and pointers
*
* Parameter:
* upload_ctx -- upload context which is being initialized
*
* Return value:
* NGX_OK on success
* NGX_ERROR if error has occured
*
*/
static ngx_int_t upload_start(ngx_http_upload_ctx_t *upload_ctx, ngx_http_upload_loc_conf_t *ulcf);
/*
* upload_parse_request_headers
*
* Parse and verify HTTP headers, extract boundary or
* content disposition
*
* Parameters:
* upload_ctx -- upload context to populate
* headers_in -- request headers
*
* Return value:
* NGX_OK on success
* NGX_ERROR if error has occured
*/
static ngx_int_t upload_parse_request_headers(ngx_http_upload_ctx_t *upload_ctx, ngx_http_headers_in_t *headers_in);
/*
* upload_process_buf
*
* Process buffer with multipart stream starting from start and terminating
* by end, operating on upload_ctx. The header information is accumulated in
* This call can invoke one or more calls to start_upload_file, finish_upload_file,
* abort_upload_file and flush_output_buffer routines.
*
* Returns value NGX_OK successful
* NGX_UPLOAD_MALFORMED stream is malformed
* NGX_UPLOAD_NOMEM insufficient memory
* NGX_UPLOAD_IOERROR input-output error
* NGX_UPLOAD_SCRIPTERROR nginx script engine failed
* NGX_UPLOAD_TOOLARGE field body is too large
*/
static ngx_int_t upload_process_buf(ngx_http_upload_ctx_t *upload_ctx, u_char *start, u_char *end);
static ngx_int_t upload_process_raw_buf(ngx_http_upload_ctx_t *upload_ctx, u_char *start, u_char *end);
static ngx_command_t ngx_http_upload_commands[] = { /* {{{ */
/*
* Enables uploads for location and specifies location to pass modified request to
*/
{ ngx_string("upload_pass"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_http_upload_pass,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
/*
* Specifies base path of file store
*/
{ ngx_string("upload_store"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1234,
ngx_http_upload_set_path_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, store_path),
NULL },
/*
* Specifies base path of state store
*/
{ ngx_string("upload_state_store"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
ngx_http_upload_set_path_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, state_store_path),
NULL },
/*
* Specifies the access mode for files in store
*/
{ ngx_string("upload_store_access"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE123,
ngx_conf_set_access_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, store_access),
NULL },
/*
* Specifies the size of buffer, which will be used
* to write data to disk
*/
{ ngx_string("upload_buffer_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, buffer_size),
NULL },
/*
* Specifies the size of buffer, which will be used
* for merging ranges into state file
*/
{ ngx_string("upload_merge_buffer_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, merge_buffer_size),
NULL },
/*
* Specifies the size of buffer, which will be used
* for returning range header
*/
{ ngx_string("upload_range_header_buffer_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, range_header_buffer_size),
NULL },
/*
* Specifies the maximal length of the part header
*/
{ ngx_string("upload_max_part_header_len"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, max_header_len),
NULL },
/*
* Specifies the maximal size of the file to be uploaded
*/
{ ngx_string("upload_max_file_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_conf_set_off_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, max_file_size),
NULL },
/*
* Specifies the maximal length of output body
*/
{ ngx_string("upload_max_output_body_len"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, max_output_body_len),
NULL },
/*
* Specifies the field to set in altered response body
*/
{ ngx_string("upload_set_form_field"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE2,
ngx_http_upload_set_form_field,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, field_templates),
NULL},
/*
* Specifies the field with aggregate parameters
* to set in altered response body
*/
{ ngx_string("upload_aggregate_form_field"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE2,
ngx_http_upload_set_form_field,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, aggregate_field_templates),
NULL},
/*
* Specifies the field to pass to backend
*/
{ ngx_string("upload_pass_form_field"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_http_upload_pass_form_field,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL},
/*
* Specifies http statuses upon reception of
* which cleanup of uploaded files will be initiated
*/
{ ngx_string("upload_cleanup"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_1MORE,
ngx_http_upload_cleanup,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL},
/*
* Specifies the whether or not to forward query args
* to the upload_pass redirect location
*/
{ ngx_string("upload_pass_args"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, forward_args),
NULL },
/*
* Specifies request body reception rate limit
*/
{ ngx_string("upload_limit_rate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, limit_rate),
NULL },
/*
* Specifies whether array brackets in file field names must be dropped
*/
{ ngx_string("upload_tame_arrays"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, tame_arrays),
NULL },
/*
* Specifies whether resumable uploads are allowed
*/
{ ngx_string("upload_resumable"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, resumable_uploads),
NULL },
/*
* Specifies whether empty field names are allowed
*/
{ ngx_string("upload_empty_fiels_names"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, empty_field_names),
NULL },
/*
* Specifies the name and content of the header that will be added to the response
*/
{ ngx_string("upload_add_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE2,
ngx_http_upload_set_form_field,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_upload_loc_conf_t, header_templates),
NULL},
ngx_null_command
}; /* }}} */
ngx_http_module_t ngx_http_upload_module_ctx = { /* {{{ */
ngx_http_upload_add_variables, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_upload_create_loc_conf, /* create location configuration */
ngx_http_upload_merge_loc_conf /* merge location configuration */
}; /* }}} */
ngx_module_t ngx_http_upload_module = { /* {{{ */
NGX_MODULE_V1,
&ngx_http_upload_module_ctx, /* module context */
ngx_http_upload_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
}; /* }}} */
static ngx_http_variable_t ngx_http_upload_variables[] = { /* {{{ */
{ ngx_string("upload_field_name"), NULL, ngx_http_upload_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, field_name),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_content_type"),
NULL,
ngx_http_upload_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, content_type),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_name"), NULL, ngx_http_upload_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, file_name),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_number"), NULL, ngx_http_upload_uint_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, ordinal),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_tmp_path"), NULL, ngx_http_upload_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, output_file.name),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_content_range"),
ngx_http_upload_content_range_variable_set,
ngx_http_upload_content_range_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, content_range_n),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_null_string, NULL, NULL, 0, 0, 0 }
}; /* }}} */
static ngx_http_variable_t ngx_http_upload_aggregate_variables[] = { /* {{{ */
{ ngx_string("upload_file_md5"), NULL, ngx_http_upload_md5_variable,
(uintptr_t) "0123456789abcdef",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_md5_uc"), NULL, ngx_http_upload_md5_variable,
(uintptr_t) "0123456789ABCDEF",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_sha1"), NULL, ngx_http_upload_sha1_variable,
(uintptr_t) "0123456789abcdef",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_sha1_uc"), NULL, ngx_http_upload_sha1_variable,
(uintptr_t) "0123456789ABCDEF",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_sha256"), NULL, ngx_http_upload_sha256_variable,
(uintptr_t) "0123456789abcdef",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_sha256_uc"), NULL, ngx_http_upload_sha256_variable,
(uintptr_t) "0123456789ABCDEF",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_sha512"), NULL, ngx_http_upload_sha512_variable,
(uintptr_t) "0123456789abcdef",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_sha512_uc"), NULL, ngx_http_upload_sha512_variable,
(uintptr_t) "0123456789ABCDEF",
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_crc32"), NULL, ngx_http_upload_crc32_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, crc32),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("upload_file_size"), NULL, ngx_http_upload_file_size_variable,
(uintptr_t) offsetof(ngx_http_upload_ctx_t, output_file.offset),
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_null_string, NULL, NULL, 0, 0, 0 }
}; /* }}} */
static ngx_str_t ngx_http_upload_empty_field_value = ngx_null_string;
static ngx_str_t ngx_upload_field_part1 = { /* {{{ */
sizeof(CRLF CONTENT_DISPOSITION_STRING " form-data; name=\"") - 1,
(u_char*)CRLF CONTENT_DISPOSITION_STRING " form-data; name=\""
}; /* }}} */
static ngx_str_t ngx_upload_field_part2 = { /* {{{ */
sizeof("\"" CRLF CRLF) - 1,
(u_char*)"\"" CRLF CRLF
}; /* }}} */
static ngx_int_t /* {{{ ngx_http_upload_handler */
ngx_http_upload_handler(ngx_http_request_t *r)
{
ngx_http_upload_loc_conf_t *ulcf;
ngx_http_upload_ctx_t *u;
ngx_int_t rc;
if(r->method & NGX_HTTP_OPTIONS)
return ngx_http_upload_options_handler(r);
if (!(r->method & NGX_HTTP_POST))
return NGX_HTTP_NOT_ALLOWED;
ulcf = ngx_http_get_module_loc_conf(r, ngx_http_upload_module);
u = ngx_http_get_module_ctx(r, ngx_http_upload_module);
if (u == NULL) {
u = ngx_pcalloc(r->pool, sizeof(ngx_http_upload_ctx_t));
if (u == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_set_ctx(r, u, ngx_http_upload_module);
}
if(ulcf->md5) {
if(u->md5_ctx == NULL) {
u->md5_ctx = ngx_palloc(r->pool, sizeof(ngx_http_upload_md5_ctx_t));
if (u->md5_ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
}else
u->md5_ctx = NULL;
if(ulcf->sha1) {
if(u->sha1_ctx == NULL) {
u->sha1_ctx = ngx_palloc(r->pool, sizeof(ngx_http_upload_sha1_ctx_t));
if (u->sha1_ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
}else
u->sha1_ctx = NULL;
if(ulcf->sha256) {
if(u->sha256_ctx == NULL) {
u->sha256_ctx = ngx_palloc(r->pool, sizeof(ngx_http_upload_sha256_ctx_t));
if (u->sha256_ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
}else
u->sha256_ctx = NULL;
if(ulcf->sha512) {
if(u->sha512_ctx == NULL) {
u->sha512_ctx = ngx_palloc(r->pool, sizeof(ngx_http_upload_sha512_ctx_t));
if (u->sha512_ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
}else
u->sha512_ctx = NULL;
u->calculate_crc32 = ulcf->crc32;
u->request = r;
u->log = r->connection->log;
u->chain = u->last = u->checkpoint = NULL;
u->output_body_len = 0;
u->prevent_output = 0;
u->no_content = 1;
u->limit_rate = ulcf->limit_rate;
u->received = 0;
u->ordinal = 0;
upload_init_ctx(u);
rc = upload_parse_request_headers(u, &r->headers_in);
if(rc != NGX_OK) {
upload_shutdown_ctx(u);
return rc;
}
rc = ngx_http_upload_eval_path(r);
if(rc != NGX_OK) {
upload_shutdown_ctx(u);
return rc;
}
rc = ngx_http_upload_eval_state_path(r);
if(rc != NGX_OK) {
upload_shutdown_ctx(u);
return rc;
}
if (ngx_http_upload_test_expect(r) != NGX_OK) {
upload_shutdown_ctx(u);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if(upload_start(u, ulcf) != NGX_OK)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
#if (NGX_HTTP_V2)
if (r->stream) {
r->request_body_no_buffering = 1;
rc = ngx_http_read_client_request_body(r, ngx_http_upload_read_event_handler);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
upload_shutdown_ctx(u);
return rc;
}
return NGX_DONE;
}
#endif
rc = ngx_http_read_upload_client_request_body(r);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
return NGX_DONE;
} /* }}} */
#if (NGX_HTTP_V2)
static void
ngx_http_upload_read_event_handler(ngx_http_request_t *r)
{
ngx_http_upload_ctx_t *u;
ngx_http_request_body_t *rb;
ngx_int_t rc;
ngx_chain_t *in;
ssize_t n, limit, buf_read_size, next_buf_size, remaining;
ngx_msec_t delay;
ngx_event_t *rev;
if (ngx_exiting || ngx_terminate) {
ngx_http_finalize_request(r, NGX_HTTP_CLOSE);
return;
}
rev = r->connection->read;
rb = r->request_body;
if (rb == NULL) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
r->read_event_handler = ngx_http_upload_read_event_handler;
u = ngx_http_get_module_ctx(r, ngx_http_upload_module);
for ( ;; ) {
buf_read_size = 0;
for (in = rb->bufs ; in; in = in->next) {
n = in->buf->last - in->buf->pos;
rc = u->data_handler(u, in->buf->pos, in->buf->pos + n);
in->buf->pos += n;
u->received += n;
buf_read_size += n;
if (rc != NGX_OK) {
goto err;
}
}
rb->bufs = NULL;
// We're done reading the request body, break out of loop
if (!r->reading_body) {
rc = u->data_handler(u, NULL, NULL);
if (rc == NGX_OK) {
break;
} else {
goto err;
}
}
// Check whether we have exceeded limit_rate and should delay the next
// buffer read
if (u->limit_rate) {
remaining = ((ssize_t) r->headers_in.content_length_n) - u->received;
next_buf_size = (buf_read_size > remaining) ? remaining : buf_read_size;
limit = u->limit_rate * (ngx_time() - r->start_sec + 1) - (u->received + next_buf_size);
if (limit < 0) {
rev->delayed = 1;
ngx_add_timer(rev, (ngx_msec_t) ((limit * -1000 / u->limit_rate) + 1));
return;
}
}
rc = ngx_http_read_unbuffered_request_body(r);