forked from nginx/nginx
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ngx_http_request.h
607 lines (449 loc) · 20.2 KB
/
ngx_http_request.h
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
/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#ifndef _NGX_HTTP_REQUEST_H_INCLUDED_
#define _NGX_HTTP_REQUEST_H_INCLUDED_
#define NGX_HTTP_MAX_URI_CHANGES 10
#define NGX_HTTP_MAX_SUBREQUESTS 50
/* must be 2^n */
#define NGX_HTTP_LC_HEADER_LEN 32
#define NGX_HTTP_DISCARD_BUFFER_SIZE 4096
#define NGX_HTTP_LINGERING_BUFFER_SIZE 4096
#define NGX_HTTP_VERSION_9 9
#define NGX_HTTP_VERSION_10 1000
#define NGX_HTTP_VERSION_11 1001
#define NGX_HTTP_VERSION_20 2000
#define NGX_HTTP_UNKNOWN 0x0001
#define NGX_HTTP_GET 0x0002
#define NGX_HTTP_HEAD 0x0004
#define NGX_HTTP_POST 0x0008
#define NGX_HTTP_PUT 0x0010
#define NGX_HTTP_DELETE 0x0020
#define NGX_HTTP_MKCOL 0x0040
#define NGX_HTTP_COPY 0x0080
#define NGX_HTTP_MOVE 0x0100
#define NGX_HTTP_OPTIONS 0x0200
#define NGX_HTTP_PROPFIND 0x0400
#define NGX_HTTP_PROPPATCH 0x0800
#define NGX_HTTP_LOCK 0x1000
#define NGX_HTTP_UNLOCK 0x2000
#define NGX_HTTP_PATCH 0x4000
#define NGX_HTTP_TRACE 0x8000
#define NGX_HTTP_CONNECTION_CLOSE 1
#define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
#define NGX_NONE 1
#define NGX_HTTP_PARSE_HEADER_DONE 1
#define NGX_HTTP_CLIENT_ERROR 10
#define NGX_HTTP_PARSE_INVALID_METHOD 10
#define NGX_HTTP_PARSE_INVALID_REQUEST 11
#define NGX_HTTP_PARSE_INVALID_VERSION 12
#define NGX_HTTP_PARSE_INVALID_09_METHOD 13
#define NGX_HTTP_PARSE_INVALID_HEADER 14
/* unused 1 */
#define NGX_HTTP_SUBREQUEST_IN_MEMORY 2
#define NGX_HTTP_SUBREQUEST_WAITED 4
#define NGX_HTTP_SUBREQUEST_CLONE 8
#define NGX_HTTP_SUBREQUEST_BACKGROUND 16
#define NGX_HTTP_LOG_UNSAFE 1
#define NGX_HTTP_CONTINUE 100
#define NGX_HTTP_SWITCHING_PROTOCOLS 101
#define NGX_HTTP_PROCESSING 102
#define NGX_HTTP_OK 200
#define NGX_HTTP_CREATED 201
#define NGX_HTTP_ACCEPTED 202
#define NGX_HTTP_NO_CONTENT 204
#define NGX_HTTP_PARTIAL_CONTENT 206
#define NGX_HTTP_SPECIAL_RESPONSE 300
#define NGX_HTTP_MOVED_PERMANENTLY 301
#define NGX_HTTP_MOVED_TEMPORARILY 302
#define NGX_HTTP_SEE_OTHER 303
#define NGX_HTTP_NOT_MODIFIED 304
#define NGX_HTTP_TEMPORARY_REDIRECT 307
#define NGX_HTTP_PERMANENT_REDIRECT 308
#define NGX_HTTP_BAD_REQUEST 400
#define NGX_HTTP_UNAUTHORIZED 401
#define NGX_HTTP_FORBIDDEN 403
#define NGX_HTTP_NOT_FOUND 404
#define NGX_HTTP_NOT_ALLOWED 405
#define NGX_HTTP_REQUEST_TIME_OUT 408
#define NGX_HTTP_CONFLICT 409
#define NGX_HTTP_LENGTH_REQUIRED 411
#define NGX_HTTP_PRECONDITION_FAILED 412
#define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
#define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
#define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE 415
#define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
#define NGX_HTTP_MISDIRECTED_REQUEST 421
#define NGX_HTTP_TOO_MANY_REQUESTS 429
/* Our own HTTP codes */
/* The special code to close connection without any response */
#define NGX_HTTP_CLOSE 444
#define NGX_HTTP_NGINX_CODES 494
#define NGX_HTTP_REQUEST_HEADER_TOO_LARGE 494
#define NGX_HTTPS_CERT_ERROR 495
#define NGX_HTTPS_NO_CERT 496
/*
* We use the special code for the plain HTTP requests that are sent to
* HTTPS port to distinguish it from 4XX in an error page redirection
*/
#define NGX_HTTP_TO_HTTPS 497
/* 498 is the canceled code for the requests with invalid host name */
/*
* HTTP does not define the code for the case when a client closed
* the connection while we are processing its request so we introduce
* own code to log such situation when a client has closed the connection
* before we even try to send the HTTP header to it
*/
#define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
#define NGX_HTTP_INTERNAL_SERVER_ERROR 500
#define NGX_HTTP_NOT_IMPLEMENTED 501
#define NGX_HTTP_BAD_GATEWAY 502
#define NGX_HTTP_SERVICE_UNAVAILABLE 503
#define NGX_HTTP_GATEWAY_TIME_OUT 504
#define NGX_HTTP_VERSION_NOT_SUPPORTED 505
#define NGX_HTTP_INSUFFICIENT_STORAGE 507
#define NGX_HTTP_LOWLEVEL_BUFFERED 0xf0
#define NGX_HTTP_WRITE_BUFFERED 0x10
#define NGX_HTTP_GZIP_BUFFERED 0x20
#define NGX_HTTP_SSI_BUFFERED 0x01
#define NGX_HTTP_SUB_BUFFERED 0x02
#define NGX_HTTP_COPY_BUFFERED 0x04
typedef enum {
NGX_HTTP_INITING_REQUEST_STATE = 0,
NGX_HTTP_READING_REQUEST_STATE,
NGX_HTTP_PROCESS_REQUEST_STATE,
NGX_HTTP_CONNECT_UPSTREAM_STATE,
NGX_HTTP_WRITING_UPSTREAM_STATE,
NGX_HTTP_READING_UPSTREAM_STATE,
NGX_HTTP_WRITING_REQUEST_STATE,
NGX_HTTP_LINGERING_CLOSE_STATE,
NGX_HTTP_KEEPALIVE_STATE
} ngx_http_state_e;
typedef struct {
ngx_str_t name;
ngx_uint_t offset;
ngx_http_header_handler_pt handler;
} ngx_http_header_t;
typedef struct {
ngx_str_t name;
ngx_uint_t offset;
} ngx_http_header_out_t;
typedef struct {
ngx_list_t headers;
ngx_table_elt_t *host;
ngx_table_elt_t *connection;
ngx_table_elt_t *if_modified_since;
ngx_table_elt_t *if_unmodified_since;
ngx_table_elt_t *if_match;
ngx_table_elt_t *if_none_match;
ngx_table_elt_t *user_agent;
ngx_table_elt_t *referer;
ngx_table_elt_t *content_length;
ngx_table_elt_t *content_range;
ngx_table_elt_t *content_type;
ngx_table_elt_t *range;
ngx_table_elt_t *if_range;
ngx_table_elt_t *transfer_encoding;
ngx_table_elt_t *te;
ngx_table_elt_t *expect;
ngx_table_elt_t *upgrade;
#if (NGX_HTTP_GZIP || NGX_HTTP_HEADERS)
ngx_table_elt_t *accept_encoding;
ngx_table_elt_t *via;
#endif
ngx_table_elt_t *authorization;
ngx_table_elt_t *keep_alive;
#if (NGX_HTTP_X_FORWARDED_FOR)
ngx_array_t x_forwarded_for;
#endif
#if (NGX_HTTP_REALIP)
ngx_table_elt_t *x_real_ip;
#endif
#if (NGX_HTTP_HEADERS)
ngx_table_elt_t *accept;
ngx_table_elt_t *accept_language;
#endif
#if (NGX_HTTP_DAV)
ngx_table_elt_t *depth;
ngx_table_elt_t *destination;
ngx_table_elt_t *overwrite;
ngx_table_elt_t *date;
#endif
ngx_str_t user;
ngx_str_t passwd;
ngx_array_t cookies;
ngx_str_t server;
off_t content_length_n;
time_t keep_alive_n;
unsigned connection_type:2;
unsigned chunked:1;
unsigned msie:1;
unsigned msie6:1;
unsigned opera:1;
unsigned gecko:1;
unsigned chrome:1;
unsigned safari:1;
unsigned konqueror:1;
} ngx_http_headers_in_t;
typedef struct {
ngx_list_t headers;
ngx_list_t trailers;
ngx_uint_t status;
ngx_str_t status_line;
ngx_table_elt_t *server;
ngx_table_elt_t *date;
ngx_table_elt_t *content_length;
ngx_table_elt_t *content_encoding;
ngx_table_elt_t *location;
ngx_table_elt_t *refresh;
ngx_table_elt_t *last_modified;
ngx_table_elt_t *content_range;
ngx_table_elt_t *accept_ranges;
ngx_table_elt_t *www_authenticate;
ngx_table_elt_t *expires;
ngx_table_elt_t *etag;
ngx_str_t *override_charset;
size_t content_type_len;
ngx_str_t content_type;
ngx_str_t charset;
u_char *content_type_lowcase;
ngx_uint_t content_type_hash;
ngx_array_t cache_control;
ngx_array_t link;
off_t content_length_n;
off_t content_offset;
time_t date_time;
time_t last_modified_time;
} ngx_http_headers_out_t;
typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r);
typedef struct {
ngx_temp_file_t *temp_file;
ngx_chain_t *bufs;
ngx_buf_t *buf;
off_t rest;
off_t received;
ngx_chain_t *free;
ngx_chain_t *busy;
ngx_http_chunked_t *chunked;
ngx_http_client_body_handler_pt post_handler;
} ngx_http_request_body_t;
typedef struct ngx_http_addr_conf_s ngx_http_addr_conf_t;
typedef struct {
ngx_http_addr_conf_t *addr_conf;
ngx_http_conf_ctx_t *conf_ctx;
#if (NGX_HTTP_SSL || NGX_COMPAT)
ngx_str_t *ssl_servername;
#if (NGX_PCRE)
ngx_http_regex_t *ssl_servername_regex;
#endif
#endif
ngx_chain_t *busy;
ngx_int_t nbusy;
ngx_chain_t *free;
unsigned ssl:1;
unsigned proxy_protocol:1;
} ngx_http_connection_t;
typedef void (*ngx_http_cleanup_pt)(void *data);
typedef struct ngx_http_cleanup_s ngx_http_cleanup_t;
struct ngx_http_cleanup_s {
ngx_http_cleanup_pt handler;
void *data;
ngx_http_cleanup_t *next;
};
typedef ngx_int_t (*ngx_http_post_subrequest_pt)(ngx_http_request_t *r,
void *data, ngx_int_t rc);
typedef struct {
ngx_http_post_subrequest_pt handler;
void *data;
} ngx_http_post_subrequest_t;
typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t;
struct ngx_http_postponed_request_s {
ngx_http_request_t *request;
ngx_chain_t *out;
ngx_http_postponed_request_t *next;
};
typedef struct ngx_http_posted_request_s ngx_http_posted_request_t;
struct ngx_http_posted_request_s {
ngx_http_request_t *request;
ngx_http_posted_request_t *next;
};
typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r);
struct ngx_http_request_s {
uint32_t signature; /* "HTTP" */
ngx_connection_t *connection;
void **ctx;
void **main_conf;
void **srv_conf;
void **loc_conf;
ngx_http_event_handler_pt read_event_handler;
ngx_http_event_handler_pt write_event_handler;
#if (NGX_HTTP_CACHE)
ngx_http_cache_t *cache;
#endif
ngx_http_upstream_t *upstream;
ngx_array_t *upstream_states;
/* of ngx_http_upstream_state_t */
ngx_pool_t *pool;
ngx_buf_t *header_in;
ngx_http_headers_in_t headers_in;
ngx_http_headers_out_t headers_out;
ngx_http_request_body_t *request_body;
time_t lingering_time;
time_t start_sec;
ngx_msec_t start_msec;
ngx_uint_t method;
ngx_uint_t http_version;
ngx_str_t request_line;
ngx_str_t uri;
ngx_str_t args;
ngx_str_t exten;
ngx_str_t unparsed_uri;
ngx_str_t method_name;
ngx_str_t http_protocol;
ngx_chain_t *out;
ngx_http_request_t *main;
ngx_http_request_t *parent;
ngx_http_postponed_request_t *postponed;
ngx_http_post_subrequest_t *post_subrequest;
ngx_http_posted_request_t *posted_requests;
ngx_int_t phase_handler;
ngx_http_handler_pt content_handler;
ngx_uint_t access_code;
ngx_http_variable_value_t *variables;
#if (NGX_PCRE)
ngx_uint_t ncaptures;
int *captures;
u_char *captures_data;
#endif
size_t limit_rate;
size_t limit_rate_after;
/* used to learn the Apache compatible response length without a header */
size_t header_size;
off_t request_length;
ngx_uint_t err_status;
ngx_http_connection_t *http_connection;
ngx_http_v2_stream_t *stream;
ngx_http_log_handler_pt log_handler;
ngx_http_cleanup_t *cleanup;
unsigned count:16;
unsigned subrequests:8;
unsigned blocked:8;
unsigned aio:1;
unsigned http_state:4;
/* URI with "/." and on Win32 with "//" */
unsigned complex_uri:1;
/* URI with "%" */
unsigned quoted_uri:1;
/* URI with "+" */
unsigned plus_in_uri:1;
/* URI with " " */
unsigned space_in_uri:1;
unsigned invalid_header:1;
unsigned add_uri_to_alias:1;
unsigned valid_location:1;
unsigned valid_unparsed_uri:1;
unsigned uri_changed:1;
unsigned uri_changes:4;
unsigned request_body_in_single_buf:1;
unsigned request_body_in_file_only:1;
unsigned request_body_in_persistent_file:1;
unsigned request_body_in_clean_file:1;
unsigned request_body_file_group_access:1;
unsigned request_body_file_log_level:3;
unsigned request_body_no_buffering:1;
unsigned subrequest_in_memory:1;
unsigned waited:1;
#if (NGX_HTTP_CACHE)
unsigned cached:1;
#endif
#if (NGX_HTTP_GZIP)
unsigned gzip_tested:1;
unsigned gzip_ok:1;
unsigned gzip_vary:1;
#endif
unsigned proxy:1;
unsigned bypass_cache:1;
unsigned no_cache:1;
/*
* instead of using the request context data in
* ngx_http_limit_conn_module and ngx_http_limit_req_module
* we use the single bits in the request structure
*/
unsigned limit_conn_set:1;
unsigned limit_req_set:1;
#if 0
unsigned cacheable:1;
#endif
unsigned pipeline:1;
unsigned chunked:1;
unsigned header_only:1;
unsigned expect_trailers:1;
unsigned keepalive:1;
unsigned lingering_close:1;
unsigned discard_body:1;
unsigned reading_body:1;
unsigned internal:1;
unsigned error_page:1;
unsigned filter_finalize:1;
unsigned post_action:1;
unsigned request_complete:1;
unsigned request_output:1;
unsigned header_sent:1;
unsigned expect_tested:1;
unsigned root_tested:1;
unsigned done:1;
unsigned logged:1;
unsigned buffered:4;
unsigned main_filter_need_in_memory:1;
unsigned filter_need_in_memory:1;
unsigned filter_need_temporary:1;
unsigned preserve_body:1;
unsigned allow_ranges:1;
unsigned subrequest_ranges:1;
unsigned single_range:1;
unsigned disable_not_modified:1;
unsigned stat_reading:1;
unsigned stat_writing:1;
unsigned stat_processing:1;
unsigned background:1;
unsigned health_check:1;
/* used to parse HTTP headers */
ngx_uint_t state;
ngx_uint_t header_hash;
ngx_uint_t lowcase_index;
u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN];
u_char *header_name_start;
u_char *header_name_end;
u_char *header_start;
u_char *header_end;
/*
* a memory that can be reused after parsing a request line
* via ngx_http_ephemeral_t
*/
u_char *uri_start;
u_char *uri_end;
u_char *uri_ext;
u_char *args_start;
u_char *request_start;
u_char *request_end;
u_char *method_end;
u_char *schema_start;
u_char *schema_end;
u_char *host_start;
u_char *host_end;
u_char *port_start;
u_char *port_end;
unsigned http_minor:16;
unsigned http_major:16;
};
typedef struct {
ngx_http_posted_request_t terminal_posted_request;
} ngx_http_ephemeral_t;
#define ngx_http_ephemeral(r) (void *) (&r->uri_start)
extern ngx_http_header_t ngx_http_headers_in[];
extern ngx_http_header_out_t ngx_http_headers_out[];
#define ngx_http_set_log_request(log, r) \
((ngx_http_log_ctx_t *) log->data)->current_request = r
#endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */