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nginx 0.1.19
[nginx-catap.git] / src / http / ngx_http_core_module.c
blobb3c1a14909de64a73706cf000aa19781af769c58
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_event.h>
10 #include <ngx_http.h>
11 #include <nginx.h>
12
13
14 #define NGX_HTTP_LOCATION_EXACT 1
15 #define NGX_HTTP_LOCATION_AUTO_REDIRECT 2
16 #define NGX_HTTP_LOCATION_NOREGEX 3
17 #define NGX_HTTP_LOCATION_REGEX 4
18
19
20 static void ngx_http_core_phase_event_handler(ngx_event_t *rev);
21 static void ngx_http_core_run_phases(ngx_http_request_t *r);
22 static ngx_int_t ngx_http_core_find_location(ngx_http_request_t *r,
23 ngx_array_t *locations, size_t len);
24
25 static void *ngx_http_core_create_main_conf(ngx_conf_t *cf);
26 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
27 static void *ngx_http_core_create_srv_conf(ngx_conf_t *cf);
28 static char *ngx_http_core_merge_srv_conf(ngx_conf_t *cf,
29 void *parent, void *child);
30 static void *ngx_http_core_create_loc_conf(ngx_conf_t *cf);
31 static char *ngx_http_core_merge_loc_conf(ngx_conf_t *cf,
32 void *parent, void *child);
33
34 static char *ngx_http_core_server(ngx_conf_t *cf, ngx_command_t *cmd,
35 void *dummy);
36 static char *ngx_http_core_location(ngx_conf_t *cf, ngx_command_t *cmd,
37 void *dummy);
38 static int ngx_http_core_cmp_locations(const void *first, const void *second);
39
40 static char *ngx_http_core_types(ngx_conf_t *cf, ngx_command_t *cmd,
41 void *conf);
42 static char *ngx_http_core_type(ngx_conf_t *cf, ngx_command_t *dummy,
43 void *conf);
44
45 static char *ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd,
46 void *conf);
47 static char *ngx_http_core_server_name(ngx_conf_t *cf, ngx_command_t *cmd,
48 void *conf);
49 static char *ngx_http_core_root(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
50 static char *ngx_http_core_error_page(ngx_conf_t *cf, ngx_command_t *cmd,
51 void *conf);
52 static char *ngx_http_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd,
53 void *conf);
54 static char *ngx_http_core_keepalive(ngx_conf_t *cf, ngx_command_t *cmd,
55 void *conf);
56
57 static char *ngx_http_core_lowat_check(ngx_conf_t *cf, void *post, void *data);
58
59 static ngx_conf_post_t ngx_http_core_lowat_post =
60 { ngx_http_core_lowat_check };
61
62
63 static ngx_conf_enum_t ngx_http_restrict_host_names[] = {
64 { ngx_string("off"), NGX_HTTP_RESTRICT_HOST_OFF },
65 { ngx_string("on"), NGX_HTTP_RESTRICT_HOST_ON },
66 { ngx_string("close"), NGX_HTTP_RESTRICT_HOST_CLOSE },
67 { ngx_null_string, 0 }
68 };
69
70
71 static ngx_command_t ngx_http_core_commands[] = {
72
73 { ngx_string("server_names_hash"),
74 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
75 ngx_conf_set_num_slot,
76 NGX_HTTP_MAIN_CONF_OFFSET,
77 offsetof(ngx_http_core_main_conf_t, server_names_hash),
78 NULL },
79
80 { ngx_string("server_names_hash_threshold"),
81 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
82 ngx_conf_set_num_slot,
83 NGX_HTTP_MAIN_CONF_OFFSET,
84 offsetof(ngx_http_core_main_conf_t, server_names_hash_threshold),
85 NULL },
86
87 { ngx_string("server"),
88 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
89 ngx_http_core_server,
90 0,
91 0,
92 NULL },
93
94 { ngx_string("connection_pool_size"),
95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
96 ngx_conf_set_size_slot,
97 NGX_HTTP_SRV_CONF_OFFSET,
98 offsetof(ngx_http_core_srv_conf_t, connection_pool_size),
99 NULL },
100
101 { ngx_string("post_accept_timeout"),
102 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
103 ngx_conf_set_msec_slot,
104 NGX_HTTP_SRV_CONF_OFFSET,
105 offsetof(ngx_http_core_srv_conf_t, post_accept_timeout),
106 NULL },
107
108 { ngx_string("request_pool_size"),
109 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
110 ngx_conf_set_size_slot,
111 NGX_HTTP_SRV_CONF_OFFSET,
112 offsetof(ngx_http_core_srv_conf_t, request_pool_size),
113 NULL },
114
115 { ngx_string("client_header_timeout"),
116 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
117 ngx_conf_set_msec_slot,
118 NGX_HTTP_SRV_CONF_OFFSET,
119 offsetof(ngx_http_core_srv_conf_t, client_header_timeout),
120 NULL },
121
122 { ngx_string("client_header_buffer_size"),
123 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
124 ngx_conf_set_size_slot,
125 NGX_HTTP_SRV_CONF_OFFSET,
126 offsetof(ngx_http_core_srv_conf_t, client_header_buffer_size),
127 NULL },
128
129 { ngx_string("large_client_header_buffers"),
130 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE2,
131 ngx_conf_set_bufs_slot,
132 NGX_HTTP_SRV_CONF_OFFSET,
133 offsetof(ngx_http_core_srv_conf_t, large_client_header_buffers),
134 NULL },
135
136 { ngx_string("restrict_host_names"),
137 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
138 ngx_conf_set_enum_slot,
139 NGX_HTTP_SRV_CONF_OFFSET,
140 offsetof(ngx_http_core_srv_conf_t, restrict_host_names),
141 &ngx_http_restrict_host_names },
142
143 { ngx_string("location"),
144 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE12,
145 ngx_http_core_location,
146 NGX_HTTP_SRV_CONF_OFFSET,
147 0,
148 NULL },
149
150 { ngx_string("listen"),
151 #if 0
152 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
153 #else
154 NGX_HTTP_SRV_CONF|NGX_CONF_TAKE12,
155 #endif
156 ngx_http_core_listen,
157 NGX_HTTP_SRV_CONF_OFFSET,
158 0,
159 NULL },
160
161 { ngx_string("server_name"),
162 NGX_HTTP_SRV_CONF|NGX_CONF_1MORE,
163 ngx_http_core_server_name,
164 NGX_HTTP_SRV_CONF_OFFSET,
165 0,
166 NULL },
167
168 { ngx_string("types"),
169 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF
170 |NGX_CONF_BLOCK|NGX_CONF_NOARGS,
171 ngx_http_core_types,
172 NGX_HTTP_LOC_CONF_OFFSET,
173 0,
174 NULL },
175
176 { ngx_string("default_type"),
177 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
178 ngx_conf_set_str_slot,
179 NGX_HTTP_LOC_CONF_OFFSET,
180 offsetof(ngx_http_core_loc_conf_t, default_type),
181 NULL },
182
183 { ngx_string("root"),
184 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
185 ngx_http_core_root,
186 NGX_HTTP_LOC_CONF_OFFSET,
187 0,
188 NULL },
189
190 { ngx_string("alias"),
191 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
192 ngx_http_core_root,
193 NGX_HTTP_LOC_CONF_OFFSET,
194 0,
195 NULL },
196
197 { ngx_string("client_max_body_size"),
198 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
199 ngx_conf_set_size_slot,
200 NGX_HTTP_LOC_CONF_OFFSET,
201 offsetof(ngx_http_core_loc_conf_t, client_max_body_size),
202 NULL },
203
204 { ngx_string("client_body_buffer_size"),
205 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
206 ngx_conf_set_size_slot,
207 NGX_HTTP_LOC_CONF_OFFSET,
208 offsetof(ngx_http_core_loc_conf_t, client_body_buffer_size),
209 NULL },
210
211 { ngx_string("client_body_timeout"),
212 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
213 ngx_conf_set_msec_slot,
214 NGX_HTTP_LOC_CONF_OFFSET,
215 offsetof(ngx_http_core_loc_conf_t, client_body_timeout),
216 NULL },
217
218 { ngx_string("client_body_temp_path"),
219 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
220 ngx_conf_set_path_slot,
221 NGX_HTTP_LOC_CONF_OFFSET,
222 offsetof(ngx_http_core_loc_conf_t, client_body_temp_path),
223 (void *) ngx_garbage_collector_temp_handler },
224
225 { ngx_string("sendfile"),
226 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
227 ngx_conf_set_flag_slot,
228 NGX_HTTP_LOC_CONF_OFFSET,
229 offsetof(ngx_http_core_loc_conf_t, sendfile),
230 NULL },
231
232 { ngx_string("tcp_nopush"),
233 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
234 ngx_conf_set_flag_slot,
235 NGX_HTTP_LOC_CONF_OFFSET,
236 offsetof(ngx_http_core_loc_conf_t, tcp_nopush),
237 NULL },
238
239 { ngx_string("tcp_nodelay"),
240 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
241 ngx_conf_set_flag_slot,
242 NGX_HTTP_LOC_CONF_OFFSET,
243 offsetof(ngx_http_core_loc_conf_t, tcp_nodelay),
244 NULL },
245
246 { ngx_string("send_timeout"),
247 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
248 ngx_conf_set_msec_slot,
249 NGX_HTTP_LOC_CONF_OFFSET,
250 offsetof(ngx_http_core_loc_conf_t, send_timeout),
251 NULL },
252
253 { ngx_string("send_lowat"),
254 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
255 ngx_conf_set_size_slot,
256 NGX_HTTP_LOC_CONF_OFFSET,
257 offsetof(ngx_http_core_loc_conf_t, send_lowat),
258 &ngx_http_core_lowat_post },
259
260 { ngx_string("postpone_output"),
261 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
262 ngx_conf_set_size_slot,
263 NGX_HTTP_LOC_CONF_OFFSET,
264 offsetof(ngx_http_core_loc_conf_t, postpone_output),
265 NULL },
266
267 { ngx_string("limit_rate"),
268 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
269 |NGX_CONF_TAKE1,
270 ngx_conf_set_size_slot,
271 NGX_HTTP_LOC_CONF_OFFSET,
272 offsetof(ngx_http_core_loc_conf_t, limit_rate),
273 NULL },
274
275 { ngx_string("keepalive_timeout"),
276 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
277 ngx_http_core_keepalive,
278 NGX_HTTP_LOC_CONF_OFFSET,
279 0,
280 NULL },
281
282 { ngx_string("lingering_time"),
283 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
284 ngx_conf_set_msec_slot,
285 NGX_HTTP_LOC_CONF_OFFSET,
286 offsetof(ngx_http_core_loc_conf_t, lingering_time),
287 NULL },
288
289 { ngx_string("lingering_timeout"),
290 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
291 ngx_conf_set_msec_slot,
292 NGX_HTTP_LOC_CONF_OFFSET,
293 offsetof(ngx_http_core_loc_conf_t, lingering_timeout),
294 NULL },
295
296 { ngx_string("reset_timedout_connection"),
297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
298 ngx_conf_set_flag_slot,
299 NGX_HTTP_LOC_CONF_OFFSET,
300 offsetof(ngx_http_core_loc_conf_t, reset_timedout_connection),
301 NULL },
302
303 { ngx_string("msie_padding"),
304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
305 ngx_conf_set_flag_slot,
306 NGX_HTTP_LOC_CONF_OFFSET,
307 offsetof(ngx_http_core_loc_conf_t, msie_padding),
308 NULL },
309
310 { ngx_string("error_page"),
311 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_2MORE,
312 ngx_http_core_error_page,
313 NGX_HTTP_LOC_CONF_OFFSET,
314 0,
315 NULL },
316
317 { ngx_string("error_log"),
318 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
319 ngx_http_core_error_log,
320 NGX_HTTP_LOC_CONF_OFFSET,
321 0,
322 NULL },
323
324 #if (NGX_HTTP_CACHE)
325
326 { ngx_string("open_file_cache"),
327 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE4,
328 ngx_http_set_cache_slot,
329 NGX_HTTP_LOC_CONF_OFFSET,
330 offsetof(ngx_http_core_loc_conf_t, open_files),
331 NULL },
332
333 #endif
334
335 ngx_null_command
336 };
337
338
339 ngx_http_module_t ngx_http_core_module_ctx = {
340 NULL, /* pre conf */
341
342 ngx_http_core_create_main_conf, /* create main configuration */
343 ngx_http_core_init_main_conf, /* init main configuration */
344
345 ngx_http_core_create_srv_conf, /* create server configuration */
346 ngx_http_core_merge_srv_conf, /* merge server configuration */
347
348 ngx_http_core_create_loc_conf, /* create location configuration */
349 ngx_http_core_merge_loc_conf /* merge location configuration */
350 };
351
352
353 ngx_module_t ngx_http_core_module = {
354 NGX_MODULE,
355 &ngx_http_core_module_ctx, /* module context */
356 ngx_http_core_commands, /* module directives */
357 NGX_HTTP_MODULE, /* module type */
358 NULL, /* init module */
359 NULL /* init process */
360 };
361
362
363 void
364 ngx_http_handler(ngx_http_request_t *r)
365 {
366 r->connection->log->action = NULL;
367
368 r->connection->unexpected_eof = 0;
369
370 switch (r->headers_in.connection_type) {
371 case 0:
372 if (r->http_version > NGX_HTTP_VERSION_10) {
373 r->keepalive = 1;
374 } else {
375 r->keepalive = 0;
376 }
377 break;
378
379 case NGX_HTTP_CONNECTION_CLOSE:
380 r->keepalive = 0;
381 break;
382
383 case NGX_HTTP_CONNECTION_KEEP_ALIVE:
384 r->keepalive = 1;
385 break;
386 }
387
388 if (r->keepalive && r->headers_in.msie && r->method == NGX_HTTP_POST) {
389
390 /*
391 * MSIE may wait for some time if the response for the POST request
392 * is sent over the keepalive connection
393 */
394
395 r->keepalive = 0;
396 }
397
398 #if 0
399 /* TEST STUB */ r->http_version = NGX_HTTP_VERSION_10;
400 /* TEST STUB */ r->keepalive = 0;
401 #endif
402
403 if (r->headers_in.content_length_n > 0) {
404 r->lingering_close = 1;
405
406 } else {
407 r->lingering_close = 0;
408 }
409
410 #if 0
411 /* TEST STUB */ r->lingering_close = 1;
412 #endif
413
414 r->connection->write->event_handler = ngx_http_core_phase_event_handler;
415
416 r->uri_changed = 1;
417 r->uri_changes = 11;
418 r->phase = NGX_HTTP_REWRITE_PHASE;
419 r->phase_handler = 0;
420
421 ngx_http_core_run_phases(r);
422 }
423
424
425 static void
426 ngx_http_core_phase_event_handler(ngx_event_t *ev)
427 {
428 ngx_connection_t *c;
429 ngx_http_request_t *r;
430
431 c = ev->data;
432 r = c->data;
433
434 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "phase event handler");
435
436 ngx_http_core_run_phases(r);
437 }
438
439
440 static void
441 ngx_http_core_run_phases(ngx_http_request_t *r)
442 {
443 ngx_int_t rc;
444 ngx_http_handler_pt *h;
445 ngx_http_core_loc_conf_t *clcf;
446 ngx_http_core_main_conf_t *cmcf;
447
448 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
449
450 for (/* void */; r->phase < NGX_HTTP_LAST_PHASE; r->phase++) {
451
452 if (r->phase == NGX_HTTP_REWRITE_PHASE + 1 && r->uri_changed) {
453
454 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
455 "uri changes: %d", r->uri_changes);
456
457 /*
458 * gcc before 3.3 compiles the broken code for
459 * if (r->uri_changes-- == 0)
460 * if the r->uri_changes is defined as
461 * unsigned uri_changes:4
462 */
463
464 r->uri_changes--;
465
466 if (r->uri_changes == 0) {
467 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
468 "rewrite cycle");
469 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
470 return;
471 }
472
473 r->phase = NGX_HTTP_FIND_CONFIG_PHASE;
474 }
475
476 if (r->phase == NGX_HTTP_CONTENT_PHASE && r->content_handler) {
477 r->connection->write->event_handler = ngx_http_empty_handler;
478 ngx_http_finalize_request(r, r->content_handler(r));
479 return;
480 }
481
482 h = cmcf->phases[r->phase].handlers.elts;
483 for (r->phase_handler = cmcf->phases[r->phase].handlers.nelts - 1;
484 r->phase_handler >= 0;
485 r->phase_handler--)
486 {
487 rc = h[r->phase_handler](r);
488
489 if (rc == NGX_DONE) {
490
491 /*
492 * we should never use r here because
493 * it could point to already freed data
494 */
495
496 return;
497 }
498
499 if (rc == NGX_DECLINED) {
500 continue;
501 }
502
503 if (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_ERROR) {
504 ngx_http_finalize_request(r, rc);
505 return;
506 }
507
508 if (r->phase == NGX_HTTP_CONTENT_PHASE) {
509 ngx_http_finalize_request(r, rc);
510 return;
511 }
512
513 if (rc == NGX_AGAIN) {
514 return;
515 }
516
517 if (rc == NGX_OK && cmcf->phases[r->phase].type == NGX_OK) {
518 break;
519 }
520 }
521 }
522
523 /* no content handler was found */
524
525 if (r->uri.data[r->uri.len - 1] == '/' && !r->zero_in_uri) {
526
527 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
528
529 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
530 "directory index of \"%V%V\" is forbidden",
531 &clcf->root, &r->uri);
532
533 ngx_http_finalize_request(r, NGX_HTTP_FORBIDDEN);
534 return;
535 }
536
537 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no handler found");
538
539 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
540 }
541
542
543 ngx_int_t
544 ngx_http_find_location_config(ngx_http_request_t *r)
545 {
546 ngx_int_t rc;
547 ngx_http_core_loc_conf_t *clcf;
548 ngx_http_core_srv_conf_t *cscf;
549
550 r->content_handler = NULL;
551 r->uri_changed = 0;
552
553 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
554
555 rc = ngx_http_core_find_location(r, &cscf->locations, 0);
556
557 if (rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
558 return rc;
559 }
560
561 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
562
563 r->connection->log->file = clcf->err_log->file;
564 if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
565 r->connection->log->log_level = clcf->err_log->log_level;
566 }
567
568 if ((ngx_io.flags & NGX_IO_SENDFILE) && clcf->sendfile) {
569 r->connection->sendfile = 1;
570
571 } else {
572 r->connection->sendfile = 0;
573 }
574
575 if (r->keepalive && clcf->keepalive_timeout == 0) {
576 r->keepalive = 0;
577 }
578
579 if (!clcf->tcp_nopush) {
580 /* disable TCP_NOPUSH/TCP_CORK use */
581 r->connection->tcp_nopush = NGX_TCP_NOPUSH_DISABLED;
582 }
583
584
585 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
586 "http cl:%z max:%uz",
587 r->headers_in.content_length_n, clcf->client_max_body_size);
588
589 if (r->headers_in.content_length_n != -1
590 && clcf->client_max_body_size
591 && clcf->client_max_body_size < (size_t) r->headers_in.content_length_n)
592 {
593 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
594 "client intented to send too large body: %z bytes",
595 r->headers_in.content_length_n);
596
597 return NGX_HTTP_REQUEST_ENTITY_TOO_LARGE;
598 }
599
600
601 if (rc == NGX_HTTP_LOCATION_AUTO_REDIRECT) {
602 r->headers_out.location = ngx_list_push(&r->headers_out.headers);
603 if (r->headers_out.location == NULL) {
604 return NGX_HTTP_INTERNAL_SERVER_ERROR;
605 }
606
607 r->headers_out.location->value = clcf->name;
608
609 return NGX_HTTP_MOVED_PERMANENTLY;
610 }
611
612 if (clcf->handler) {
613 r->content_handler = clcf->handler;
614 }
615
616 return NGX_OK;
617 }
618
619
620 static ngx_int_t
621 ngx_http_core_find_location(ngx_http_request_t *r,
622 ngx_array_t *locations, size_t len)
623 {
624 ngx_int_t n, rc;
625 ngx_uint_t i, found, noregex;
626 ngx_http_core_loc_conf_t *clcf, **clcfp;
627
628 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "find location");
629
630 found = 0;
631 noregex = 0;
632
633 clcfp = locations->elts;
634 for (i = 0; i < locations->nelts; i++) {
635
636 #if (NGX_PCRE)
637 if (clcfp[i]->regex) {
638 break;
639 }
640 #endif
641
642 if (clcfp[i]->noname) {
643 break;
644 }
645
646 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
647 "find location: %s\"%V\"",
648 clcfp[i]->exact_match ? "= " : "", &clcfp[i]->name);
649
650 if (clcfp[i]->auto_redirect
651 && r->uri.len == clcfp[i]->name.len - 1
652 && ngx_strncmp(r->uri.data, clcfp[i]->name.data,
653 clcfp[i]->name.len - 1) == 0)
654 {
655 /* the locations are lexicographically sorted */
656
657 r->loc_conf = clcfp[i]->loc_conf;
658
659 return NGX_HTTP_LOCATION_AUTO_REDIRECT;
660 }
661
662 if (r->uri.len < clcfp[i]->name.len) {
663 continue;
664 }
665
666 n = ngx_strncmp(r->uri.data, clcfp[i]->name.data, clcfp[i]->name.len);
667
668 if (n < 0) {
669 /* the locations are lexicographically sorted */
670 break;
671 }
672
673 if (n == 0) {
674 if (clcfp[i]->exact_match) {
675
676 if (r->uri.len == clcfp[i]->name.len) {
677 r->loc_conf = clcfp[i]->loc_conf;
678 return NGX_HTTP_LOCATION_EXACT;
679 }
680
681 continue;
682 }
683
684 if (len > clcfp[i]->name.len) {
685 /* the previous match is longer */
686 break;
687 }
688
689 r->loc_conf = clcfp[i]->loc_conf;
690 noregex = clcfp[i]->noregex;
691 found = 1;
692 }
693 }
694
695 if (found) {
696 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
697
698 if (clcf->locations.nelts) {
699 rc = ngx_http_core_find_location(r, &clcf->locations, len);
700
701 if (rc != NGX_OK) {
702 return rc;
703 }
704 }
705 }
706
707 #if (NGX_PCRE)
708
709 if (noregex) {
710 return NGX_HTTP_LOCATION_NOREGEX;
711 }
712
713 /* regex matches */
714
715 for (/* void */; i < locations->nelts; i++) {
716
717 if (!clcfp[i]->regex) {
718 continue;
719 }
720
721 if (clcfp[i]->noname) {
722 break;
723 }
724
725 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
726 "find location: ~ \"%V\"", &clcfp[i]->name);
727
728 n = ngx_regex_exec(clcfp[i]->regex, &r->uri, NULL, 0);
729
730 if (n == NGX_REGEX_NO_MATCHED) {
731 continue;
732 }
733
734 if (n < 0) {
735 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
736 ngx_regex_exec_n
737 " failed: %d on \"%V\" using \"%V\"",
738 n, &r->uri, &clcfp[i]->name);
739 return NGX_HTTP_INTERNAL_SERVER_ERROR;
740 }
741
742 /* match */
743
744 r->loc_conf = clcfp[i]->loc_conf;
745
746 return NGX_HTTP_LOCATION_REGEX;
747 }
748
749 #endif /* NGX_PCRE */
750
751 return NGX_OK;
752 }
753
754
755 ngx_int_t
756 ngx_http_set_content_type(ngx_http_request_t *r)
757 {
758 u_char c, *p, *exten;
759 uint32_t key;
760 ngx_uint_t i;
761 ngx_http_type_t *type;
762 ngx_http_core_loc_conf_t *clcf;
763
764 r->headers_out.content_type = ngx_list_push(&r->headers_out.headers);
765 if (r->headers_out.content_type == NULL) {
766 return NGX_HTTP_INTERNAL_SERVER_ERROR;
767 }
768
769 r->headers_out.content_type->key.len = 0;
770 r->headers_out.content_type->key.data = NULL;
771 r->headers_out.content_type->value.len = 0;
772 r->headers_out.content_type->value.data = NULL;
773
774 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
775
776 if (r->exten.len) {
777
778 if (!r->low_case_exten) {
779 for (i = 0; i < r->exten.len; i++) {
780 c = r->exten.data[i];
781 if (c >= 'A' && c <= 'Z') {
782 break;
783 }
784 }
785
786 if (i < r->exten.len) {
787 if (!(p = ngx_palloc(r->pool, r->exten.len))) {
788 return NGX_HTTP_INTERNAL_SERVER_ERROR;
789 }
790
791 exten = p;
792
793 for (i = 0; i < r->exten.len; i++) {
794 c = r->exten.data[i];
795 if (c >= 'A' && c <= 'Z') {
796 *p++ = (u_char) (c | 0x20);
797 } else {
798 *p++ = c;
799 }
800 }
801
802 r->exten.data = exten;
803 }
804
805 r->low_case_exten = 1;
806 }
807
808 #if 0
809 key = ngx_crc(r->exten.data, r->exten.key);
810 #endif
811 ngx_http_types_hash_key(key, r->exten);
812
813 type = clcf->types[key].elts;
814 for (i = 0; i < clcf->types[key].nelts; i++) {
815 if (r->exten.len != type[i].exten.len) {
816 continue;
817 }
818
819 if (ngx_memcmp(r->exten.data, type[i].exten.data, r->exten.len)
820 == 0)
821 {
822 r->headers_out.content_type->value = type[i].type;
823 break;
824 }
825 }
826 }
827
828 if (r->headers_out.content_type->value.len == 0) {
829 r->headers_out.content_type->value = clcf->default_type;
830 }
831
832 return NGX_OK;
833 }
834
835
836 ngx_int_t
837 ngx_http_send_header(ngx_http_request_t *r)
838 {
839 if (r->main) {
840 return NGX_OK;
841 }
842
843 if (r->err_ctx) {
844 r->headers_out.status = r->err_status;
845 r->headers_out.status_line.len = 0;
846 }
847
848 return ngx_http_top_header_filter(r);
849 }
850
851
852 ngx_int_t
853 ngx_http_output_filter(ngx_http_request_t *r, ngx_chain_t *in)
854 {
855 ngx_int_t rc;
856
857 if (r->connection->write->error) {
858 return NGX_ERROR;
859 }
860
861 rc = ngx_http_top_body_filter(r, in);
862
863 if (rc == NGX_ERROR) {
864
865 /* NGX_ERROR may be returned by any filter */
866
867 r->connection->write->error = 1;
868 }
869
870 return rc;
871 }
872
873
874 ngx_int_t
875 ngx_http_redirect(ngx_http_request_t *r, int redirect)
876 {
877 /* STUB */
878
879 /* log request */
880
881 ngx_http_close_request(r, 0);
882 return NGX_OK;
883 }
884
885
886 ngx_int_t
887 ngx_http_set_exten(ngx_http_request_t *r)
888 {
889 ngx_int_t i;
890
891 r->exten.len = 0;
892 r->exten.data = NULL;
893
894 for (i = r->uri.len - 1; i > 1; i--) {
895 if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
896 r->exten.len = r->uri.len - i - 1;
897
898 if (r->exten.len > 0) {
899 if (!(r->exten.data = ngx_palloc(r->pool, r->exten.len + 1))) {
900 return NGX_ERROR;
901 }
902
903 ngx_cpystrn(r->exten.data, &r->uri.data[i + 1],
904 r->exten.len + 1);
905 }
906
907 break;
908
909 } else if (r->uri.data[i] == '/') {
910 break;
911 }
912 }
913
914 r->low_case_exten = 0;
915
916 return NGX_OK;
917 }
918
919
920 ngx_int_t
921 ngx_http_internal_redirect(ngx_http_request_t *r,
922 ngx_str_t *uri, ngx_str_t *args)
923 {
924 ngx_http_core_srv_conf_t *cscf;
925
926 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
927 "internal redirect: \"%V\"", uri);
928
929 r->uri = *uri;
930
931 if (args) {
932 r->args = *args;
933 }
934
935 if (ngx_http_set_exten(r) != NGX_OK) {
936 return NGX_HTTP_INTERNAL_SERVER_ERROR;
937 }
938
939 if (r->err_ctx) {
940
941 /* allocate the new module's contexts */
942
943 r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module);
944 if (r->ctx == NULL) {
945 return NGX_HTTP_INTERNAL_SERVER_ERROR;
946 }
947
948 } else {
949
950 /* clear the modules contexts */
951
952 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module);
953 }
954
955 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
956 r->loc_conf = cscf->ctx->loc_conf;
957
958 ngx_http_handler(r);
959
960 return NGX_DONE;
961 }
962
963
964 #if 0 /* STUB: test the delay http handler */
965
966 ngx_int_t
967 ngx_http_delay_handler(ngx_http_request_t *r)
968 {
969 static int on;
970
971 if (on++ == 0) {
972 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
973 "http set delay");
974 ngx_add_timer(r->connection->write, 10000);
975 return NGX_AGAIN;
976 }
977
978 r->connection->write->timedout = 0;
979 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
980 "http reset delay");
981 return NGX_DECLINED;
982 }
983
984 #endif
985
986
987 ngx_http_variable_t *
988 ngx_http_add_variable(ngx_conf_t *cf)
989 {
990 ngx_http_variable_t *var;
991 ngx_http_core_main_conf_t *cmcf;
992
993 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
994
995 if (cmcf->variables.elts == NULL) {
996 if (ngx_array_init(&cmcf->variables, cf->pool, 5,
997 sizeof(ngx_http_variable_t)) == NGX_ERROR)
998 {
999 return NULL;
1000 }
1001 }
1002
1003 if (!(var = ngx_array_push(&cmcf->variables))) {
1004 return NULL;
1005 }
1006
1007 var->index = cmcf->variables.nelts - 1;
1008
1009 return var;
1010 }
1011
1012
1013 ngx_http_variable_value_t *
1014 ngx_http_get_variable(ngx_http_request_t *r, ngx_uint_t index)
1015 {
1016 ngx_http_variable_t *v;
1017 ngx_http_core_main_conf_t *cmcf;
1018
1019 /* TODO: cached variables */
1020
1021 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
1022
1023 if (cmcf->variables.elts == NULL || cmcf->variables.nelts <= index) {
1024 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
1025 "unknown variable index: %d", index);
1026 return NULL;
1027 }
1028
1029 v = cmcf->variables.elts;
1030
1031 return v[index].handler(r, v[index].data);
1032 }
1033
1034
1035 static char *
1036 ngx_http_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
1037 {
1038 int m;
1039 char *rv;
1040 void *mconf;
1041 ngx_conf_t save;
1042 ngx_http_module_t *module;
1043 ngx_http_conf_ctx_t *ctx, *http_ctx;
1044 ngx_http_core_srv_conf_t *cscf, **cscfp;
1045 ngx_http_core_main_conf_t *cmcf;
1046
1047 if (!(ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)))) {
1048 return NGX_CONF_ERROR;
1049 }
1050
1051 http_ctx = cf->ctx;
1052 ctx->main_conf = http_ctx->main_conf;
1053
1054 /* the server{}'s srv_conf */
1055
1056 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
1057 if (ctx->srv_conf == NULL) {
1058 return NGX_CONF_ERROR;
1059 }
1060
1061 /* the server{}'s loc_conf */
1062
1063 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
1064 if (ctx->loc_conf == NULL) {
1065 return NGX_CONF_ERROR;
1066 }
1067
1068 for (m = 0; ngx_modules[m]; m++) {
1069 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
1070 continue;
1071 }
1072
1073 module = ngx_modules[m]->ctx;
1074
1075 if (module->create_srv_conf) {
1076 if (!(mconf = module->create_srv_conf(cf))) {
1077 return NGX_CONF_ERROR;
1078 }
1079
1080 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
1081 }
1082
1083 if (module->create_loc_conf) {
1084 if (!(mconf = module->create_loc_conf(cf))) {
1085 return NGX_CONF_ERROR;
1086 }
1087
1088 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
1089 }
1090 }
1091
1092
1093 /* the server configuration context */
1094
1095 cscf = ctx->srv_conf[ngx_http_core_module.ctx_index];
1096 cscf->ctx = ctx;
1097
1098
1099 cmcf = ctx->main_conf[ngx_http_core_module.ctx_index];
1100
1101 if (!(cscfp = ngx_array_push(&cmcf->servers))) {
1102 return NGX_CONF_ERROR;
1103 }
1104
1105 *cscfp = cscf;
1106
1107
1108 /* parse inside server{} */
1109
1110 save = *cf;
1111 cf->ctx = ctx;
1112 cf->cmd_type = NGX_HTTP_SRV_CONF;
1113
1114 rv = ngx_conf_parse(cf, NULL);
1115
1116 *cf = save;
1117
1118 if (rv != NGX_CONF_OK) {
1119 return rv;
1120 }
1121
1122 ngx_qsort(cscf->locations.elts, (size_t) cscf->locations.nelts,
1123 sizeof(ngx_http_core_loc_conf_t *), ngx_http_core_cmp_locations);
1124
1125 return rv;
1126 }
1127
1128
1129 static char *
1130 ngx_http_core_location(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
1131 {
1132 char *rv;
1133 ngx_int_t m;
1134 ngx_str_t *value;
1135 ngx_conf_t save;
1136 ngx_http_module_t *module;
1137 ngx_http_conf_ctx_t *ctx, *pctx;
1138 ngx_http_core_srv_conf_t *cscf;
1139 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp;
1140 #if (NGX_PCRE)
1141 ngx_str_t err;
1142 u_char errstr[NGX_MAX_CONF_ERRSTR];
1143 #endif
1144
1145 if (!(ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)))) {
1146 return NGX_CONF_ERROR;
1147 }
1148
1149 pctx = cf->ctx;
1150 ctx->main_conf = pctx->main_conf;
1151 ctx->srv_conf = pctx->srv_conf;
1152
1153 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
1154 if (ctx->loc_conf == NULL) {
1155 return NGX_CONF_ERROR;
1156 }
1157
1158 for (m = 0; ngx_modules[m]; m++) {
1159 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
1160 continue;
1161 }
1162
1163 module = ngx_modules[m]->ctx;
1164
1165 if (module->create_loc_conf) {
1166 ctx->loc_conf[ngx_modules[m]->ctx_index] =
1167 module->create_loc_conf(cf);
1168 if (ctx->loc_conf[ngx_modules[m]->ctx_index] == NULL) {
1169 return NGX_CONF_ERROR;
1170 }
1171 }
1172 }
1173
1174 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
1175 clcf->loc_conf = ctx->loc_conf;
1176
1177 value = cf->args->elts;
1178
1179 if (cf->args->nelts == 3) {
1180 if (value[1].len == 1 && value[1].data[0] == '=') {
1181 clcf->name = value[2];
1182 clcf->exact_match = 1;
1183
1184 } else if (value[1].len == 2
1185 && value[1].data[0] == '^'
1186 && value[1].data[1] == '~')
1187 {
1188 clcf->name = value[2];
1189 clcf->noregex = 1;
1190
1191 } else if ((value[1].len == 1 && value[1].data[0] == '~')
1192 || (value[1].len == 2
1193 && value[1].data[0] == '~'
1194 && value[1].data[1] == '*'))
1195 {
1196 #if (NGX_PCRE)
1197 err.len = NGX_MAX_CONF_ERRSTR;
1198 err.data = errstr;
1199
1200 clcf->regex = ngx_regex_compile(&value[2],
1201 value[1].len == 2 ? NGX_REGEX_CASELESS: 0,
1202 cf->pool, &err);
1203
1204 if (clcf->regex == NULL) {
1205 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
1206 return NGX_CONF_ERROR;
1207 }
1208
1209 clcf->name = value[2];
1210 #else
1211 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1212 "the using of the regex \"%V\" "
1213 "requires PCRE library", &value[2]);
1214 return NGX_CONF_ERROR;
1215 #endif
1216
1217 } else {
1218 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1219 "invalid location modifier \"%V\"", &value[1]);
1220 return NGX_CONF_ERROR;
1221 }
1222
1223 } else {
1224 clcf->name = value[1];
1225 }
1226
1227 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
1228
1229 if (pclcf->name.len == 0) {
1230 cscf = ctx->srv_conf[ngx_http_core_module.ctx_index];
1231 if (!(clcfp = ngx_array_push(&cscf->locations))) {
1232 return NGX_CONF_ERROR;
1233 }
1234
1235 } else {
1236 #if 0
1237 clcf->prev_location = pclcf;
1238 #endif
1239
1240 if (pclcf->exact_match) {
1241 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1242 "location \"%V\" could not be inside "
1243 "the exact location \"%V\"",
1244 &clcf->name, &pclcf->name);
1245 return NGX_CONF_ERROR;
1246 }
1247
1248 #if (NGX_PCRE)
1249 if (clcf->regex == NULL
1250 && ngx_strncmp(clcf->name.data, pclcf->name.data, pclcf->name.len)
1251 != 0)
1252 #else
1253 if (ngx_strncmp(clcf->name.data, pclcf->name.data, pclcf->name.len)
1254 != 0)
1255 #endif
1256 {
1257 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1258 "location \"%V\" is outside location \"%V\"",
1259 &clcf->name, &pclcf->name);
1260 return NGX_CONF_ERROR;
1261 }
1262
1263 if (pclcf->locations.elts == NULL) {
1264 ngx_init_array(pclcf->locations, cf->pool, 4, sizeof(void *),
1265 NGX_CONF_ERROR);
1266 }
1267
1268 if (!(clcfp = ngx_push_array(&pclcf->locations))) {
1269 return NGX_CONF_ERROR;
1270 }
1271 }
1272
1273 *clcfp = clcf;
1274
1275 save = *cf;
1276 cf->ctx = ctx;
1277 cf->cmd_type = NGX_HTTP_LOC_CONF;
1278
1279 rv = ngx_conf_parse(cf, NULL);
1280
1281 *cf = save;
1282
1283 if (rv != NGX_CONF_OK) {
1284 return rv;
1285 }
1286
1287 ngx_qsort(clcf->locations.elts, (size_t) clcf->locations.nelts,
1288 sizeof(ngx_http_core_loc_conf_t *), ngx_http_core_cmp_locations);
1289
1290 return rv;
1291 }
1292
1293
1294 static int
1295 ngx_http_core_cmp_locations(const void *one, const void *two)
1296 {
1297 ngx_int_t rc;
1298 ngx_http_core_loc_conf_t *first, *second;
1299
1300 first = *(ngx_http_core_loc_conf_t **) one;
1301 second = *(ngx_http_core_loc_conf_t **) two;
1302
1303 if (first->noname && !second->noname) {
1304 /* shift no named locations to the end */
1305 return 1;
1306 }
1307
1308 if (!first->noname && second->noname) {
1309 /* shift no named locations to the end */
1310 return -1;
1311 }
1312
1313 if (first->noname || second->noname) {
1314 /* do not sort no named locations */
1315 return 0;
1316 }
1317
1318 #if (NGX_PCRE)
1319
1320 if (first->regex && !second->regex) {
1321 /* shift the regex matches to the end */
1322 return 1;
1323 }
1324
1325 if (!first->regex && second->regex) {
1326 /* shift the regex matches to the end */
1327 return -1;
1328 }
1329
1330 if (first->regex || second->regex) {
1331 /* do not sort the regex matches */
1332 return 0;
1333 }
1334
1335 #endif
1336
1337 rc = ngx_strcmp(first->name.data, second->name.data);
1338
1339 if (rc == 0 && second->exact_match) {
1340 /* an exact match must be before the same inclusive one */
1341 return 1;
1342 }
1343
1344 return (int) rc;
1345 }
1346
1347
1348 static char *
1349 ngx_http_core_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
1350 {
1351 char *rv;
1352 ngx_conf_t save;
1353
1354 save = *cf;
1355 cf->handler = ngx_http_core_type;
1356 cf->handler_conf = conf;
1357
1358 rv = ngx_conf_parse(cf, NULL);
1359
1360 *cf = save;
1361
1362 return rv;
1363 }
1364
1365
1366 static char *
1367 ngx_http_core_type(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
1368 {
1369 ngx_http_core_loc_conf_t *lcf = conf;
1370
1371 uint32_t key;
1372 ngx_uint_t i;
1373 ngx_str_t *value;
1374 ngx_http_type_t *type;
1375
1376 if (lcf->types == NULL) {
1377 lcf->types = ngx_palloc(cf->pool, NGX_HTTP_TYPES_HASH_PRIME
1378 * sizeof(ngx_array_t));
1379 if (lcf->types == NULL) {
1380 return NGX_CONF_ERROR;
1381 }
1382
1383 for (i = 0; i < NGX_HTTP_TYPES_HASH_PRIME; i++) {
1384 if (ngx_array_init(&lcf->types[i], cf->pool, 5,
1385 sizeof(ngx_http_type_t)) == NGX_ERROR)
1386 {
1387 return NGX_CONF_ERROR;
1388 }
1389 }
1390 }
1391
1392 value = cf->args->elts;
1393
1394 for (i = 1; i < cf->args->nelts; i++) {
1395 ngx_http_types_hash_key(key, value[i]);
1396
1397 if (!(type = ngx_array_push(&lcf->types[key]))) {
1398 return NGX_CONF_ERROR;
1399 }
1400
1401 type->exten = value[i];
1402 type->type = value[0];
1403 }
1404
1405 return NGX_CONF_OK;
1406 }
1407
1408
1409 static void *
1410 ngx_http_core_create_main_conf(ngx_conf_t *cf)
1411 {
1412 ngx_http_core_main_conf_t *cmcf;
1413
1414 if (!(cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_core_main_conf_t)))) {
1415 return NGX_CONF_ERROR;
1416 }
1417
1418 if (ngx_array_init(&cmcf->servers, cf->pool, 5,
1419 sizeof(ngx_http_core_srv_conf_t *)) == NGX_ERROR)
1420 {
1421 return NGX_CONF_ERROR;
1422 }
1423
1424 cmcf->server_names_hash = NGX_CONF_UNSET_UINT;
1425 cmcf->server_names_hash_threshold = NGX_CONF_UNSET_UINT;
1426
1427 return cmcf;
1428 }
1429
1430
1431 static char *
1432 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
1433 {
1434 ngx_http_core_main_conf_t *cmcf = conf;
1435
1436 if (cmcf->server_names_hash == NGX_CONF_UNSET_UINT) {
1437 cmcf->server_names_hash = 1009;
1438 }
1439
1440 if (cmcf->server_names_hash_threshold == NGX_CONF_UNSET_UINT) {
1441 cmcf->server_names_hash_threshold = 50;
1442 }
1443
1444 return NGX_CONF_OK;
1445 }
1446
1447
1448 static void *
1449 ngx_http_core_create_srv_conf(ngx_conf_t *cf)
1450 {
1451 ngx_http_core_srv_conf_t *cscf;
1452
1453 if (!(cscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_core_srv_conf_t)))) {
1454 return NGX_CONF_ERROR;
1455 }
1456
1457 /*
1458 * set by ngx_pcalloc():
1459 *
1460 * conf->client_large_buffers.num = 0;
1461 */
1462
1463 if (ngx_array_init(&cscf->locations, cf->pool, 5, sizeof(void *))
1464 == NGX_ERROR)
1465 {
1466 return NGX_CONF_ERROR;
1467 }
1468
1469 if (ngx_array_init(&cscf->listen, cf->pool, 5, sizeof(ngx_http_listen_t))
1470 == NGX_ERROR)
1471 {
1472 return NGX_CONF_ERROR;
1473 }
1474
1475 if (ngx_array_init(&cscf->server_names, cf->pool, 5,
1476 sizeof(ngx_http_server_name_t)) == NGX_ERROR)
1477 {
1478 return NGX_CONF_ERROR;
1479 }
1480
1481 cscf->connection_pool_size = NGX_CONF_UNSET_SIZE;
1482 cscf->post_accept_timeout = NGX_CONF_UNSET_MSEC;
1483 cscf->request_pool_size = NGX_CONF_UNSET_SIZE;
1484 cscf->client_header_timeout = NGX_CONF_UNSET_MSEC;
1485 cscf->client_header_buffer_size = NGX_CONF_UNSET_SIZE;
1486 cscf->restrict_host_names = NGX_CONF_UNSET_UINT;
1487
1488 return cscf;
1489 }
1490
1491
1492 static char *
1493 ngx_http_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
1494 {
1495 ngx_http_core_srv_conf_t *prev = parent;
1496 ngx_http_core_srv_conf_t *conf = child;
1497
1498 ngx_http_listen_t *ls;
1499 ngx_http_server_name_t *sn;
1500 ngx_http_core_main_conf_t *cmcf;
1501
1502 /* TODO: it does not merge, it inits only */
1503
1504 if (conf->listen.nelts == 0) {
1505 if (!(ls = ngx_array_push(&conf->listen))) {
1506 return NGX_CONF_ERROR;
1507 }
1508
1509 ls->addr = INADDR_ANY;
1510 #if (NGX_WIN32)
1511 ls->port = 80;
1512 #else
1513 /* STUB: getuid() should be cached */
1514 ls->port = (getuid() == 0) ? 80 : 8000;
1515 #endif
1516 ls->family = AF_INET;
1517 }
1518
1519 if (conf->server_names.nelts == 0) {
1520 if (!(sn = ngx_array_push(&conf->server_names))) {
1521 return NGX_CONF_ERROR;
1522 }
1523
1524 if (!(sn->name.data = ngx_palloc(cf->pool, NGX_MAXHOSTNAMELEN))) {
1525 return NGX_CONF_ERROR;
1526 }
1527
1528 if (gethostname((char *) sn->name.data, NGX_MAXHOSTNAMELEN) == -1) {
1529 ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
1530 "gethostname() failed");
1531 return NGX_CONF_ERROR;
1532 }
1533
1534 sn->name.len = ngx_strlen(sn->name.data);
1535 sn->core_srv_conf = conf;
1536 sn->wildcard = 0;
1537
1538 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
1539
1540 if (cmcf->max_server_name_len < sn->name.len) {
1541 cmcf->max_server_name_len = sn->name.len;
1542 }
1543 }
1544
1545 ngx_conf_merge_size_value(conf->connection_pool_size,
1546 prev->connection_pool_size, 256);
1547 ngx_conf_merge_msec_value(conf->post_accept_timeout,
1548 prev->post_accept_timeout, 60000);
1549 ngx_conf_merge_size_value(conf->request_pool_size,
1550 prev->request_pool_size, 4096);
1551 ngx_conf_merge_msec_value(conf->client_header_timeout,
1552 prev->client_header_timeout, 60000);
1553 ngx_conf_merge_size_value(conf->client_header_buffer_size,
1554 prev->client_header_buffer_size, 1024);
1555 ngx_conf_merge_bufs_value(conf->large_client_header_buffers,
1556 prev->large_client_header_buffers,
1557 4, ngx_pagesize);
1558
1559 if (conf->large_client_header_buffers.size < conf->connection_pool_size) {
1560 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1561 "the \"large_client_header_buffers\" size must be "
1562 "equal to or bigger than \"connection_pool_size\"");
1563 return NGX_CONF_ERROR;
1564 }
1565
1566 ngx_conf_merge_unsigned_value(conf->restrict_host_names,
1567 prev->restrict_host_names, 0);
1568
1569 return NGX_CONF_OK;
1570 }
1571
1572
1573 static void *
1574 ngx_http_core_create_loc_conf(ngx_conf_t *cf)
1575 {
1576 ngx_http_core_loc_conf_t *lcf;
1577
1578 if (!(lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_core_loc_conf_t)))) {
1579 return NGX_CONF_ERROR;
1580 }
1581
1582 /*
1583 * set by ngx_pcalloc():
1584 *
1585 * lcf->root.len = 0;
1586 * lcf->root.data = NULL;
1587 * lcf->types = NULL;
1588 * lcf->default_type.len = 0;
1589 * lcf->default_type.data = NULL;
1590 * lcf->err_log = NULL;
1591 * lcf->error_pages = NULL;
1592 * lcf->client_body_path = NULL;
1593 * lcf->regex = NULL;
1594 * lcf->exact_match = 0;
1595 * lcf->auto_redirect = 0;
1596 * lcf->alias = 0;
1597 */
1598
1599 lcf->client_max_body_size = NGX_CONF_UNSET_SIZE;
1600 lcf->client_body_buffer_size = NGX_CONF_UNSET_SIZE;
1601 lcf->client_body_timeout = NGX_CONF_UNSET_MSEC;
1602 lcf->sendfile = NGX_CONF_UNSET;
1603 lcf->tcp_nopush = NGX_CONF_UNSET;
1604 lcf->tcp_nodelay = NGX_CONF_UNSET;
1605 lcf->send_timeout = NGX_CONF_UNSET_MSEC;
1606 lcf->send_lowat = NGX_CONF_UNSET_SIZE;
1607 lcf->postpone_output = NGX_CONF_UNSET_SIZE;
1608 lcf->limit_rate = NGX_CONF_UNSET_SIZE;
1609 lcf->keepalive_timeout = NGX_CONF_UNSET_MSEC;
1610 lcf->keepalive_header = NGX_CONF_UNSET;
1611 lcf->lingering_time = NGX_CONF_UNSET_MSEC;
1612 lcf->lingering_timeout = NGX_CONF_UNSET_MSEC;
1613 lcf->reset_timedout_connection = NGX_CONF_UNSET;
1614 lcf->msie_padding = NGX_CONF_UNSET;
1615
1616 return lcf;
1617 }
1618
1619
1620 static ngx_http_type_t ngx_http_core_default_types[] = {
1621 { ngx_string("html"), ngx_string("text/html") },
1622 { ngx_string("gif"), ngx_string("image/gif") },
1623 { ngx_string("jpg"), ngx_string("image/jpeg") },
1624 { ngx_null_string, ngx_null_string }
1625 };
1626
1627
1628 static char *
1629 ngx_http_core_merge_loc_conf(ngx_conf_t *cf,
1630 void *parent, void *child)
1631 {
1632 ngx_http_core_loc_conf_t *prev = parent;
1633 ngx_http_core_loc_conf_t *conf = child;
1634
1635 uint32_t key;
1636 ngx_uint_t i;
1637 ngx_http_type_t *type;
1638
1639 ngx_conf_merge_str_value(conf->root, prev->root, "html");
1640
1641 if (ngx_conf_full_name(cf->cycle, &conf->root) == NGX_ERROR) {
1642 return NGX_CONF_ERROR;
1643 }
1644
1645 if (conf->types == NULL) {
1646 if (prev->types) {
1647 conf->types = prev->types;
1648
1649 } else {
1650 conf->types = ngx_palloc(cf->pool, NGX_HTTP_TYPES_HASH_PRIME
1651 * sizeof(ngx_array_t));
1652 if (conf->types == NULL) {
1653 return NGX_CONF_ERROR;
1654 }
1655
1656 for (i = 0; i < NGX_HTTP_TYPES_HASH_PRIME; i++) {
1657 if (ngx_array_init(&conf->types[i], cf->pool, 5,
1658 sizeof(ngx_http_type_t)) == NGX_ERROR)
1659 {
1660 return NGX_CONF_ERROR;
1661 }
1662 }
1663
1664 for (i = 0; ngx_http_core_default_types[i].exten.len; i++) {
1665 ngx_http_types_hash_key(key,
1666 ngx_http_core_default_types[i].exten);
1667
1668 if (!(type = ngx_array_push(&conf->types[key]))) {
1669 return NGX_CONF_ERROR;
1670 }
1671
1672 *type = ngx_http_core_default_types[i];
1673 }
1674 }
1675 }
1676
1677 if (conf->err_log == NULL) {
1678 if (prev->err_log) {
1679 conf->err_log = prev->err_log;
1680 } else {
1681 conf->err_log = cf->cycle->new_log;
1682 }
1683 }
1684
1685 if (conf->error_pages == NULL && prev->error_pages) {
1686 conf->error_pages = prev->error_pages;
1687 }
1688
1689 ngx_conf_merge_str_value(conf->default_type,
1690 prev->default_type, "text/plain");
1691
1692 ngx_conf_merge_size_value(conf->client_max_body_size,
1693 prev->client_max_body_size, 1 * 1024 * 1024);
1694 ngx_conf_merge_size_value(conf->client_body_buffer_size,
1695 prev->client_body_buffer_size,
1696 (size_t) 2 * ngx_pagesize);
1697 ngx_conf_merge_msec_value(conf->client_body_timeout,
1698 prev->client_body_timeout, 60000);
1699 ngx_conf_merge_value(conf->sendfile, prev->sendfile, 0);
1700 ngx_conf_merge_value(conf->tcp_nopush, prev->tcp_nopush, 0);
1701 ngx_conf_merge_value(conf->tcp_nodelay, prev->tcp_nodelay, 0);
1702 ngx_conf_merge_msec_value(conf->send_timeout, prev->send_timeout, 60000);
1703 ngx_conf_merge_size_value(conf->send_lowat, prev->send_lowat, 0);
1704 ngx_conf_merge_size_value(conf->postpone_output, prev->postpone_output,
1705 1460);
1706 ngx_conf_merge_size_value(conf->limit_rate, prev->limit_rate, 0);
1707 ngx_conf_merge_msec_value(conf->keepalive_timeout,
1708 prev->keepalive_timeout, 75000);
1709 ngx_conf_merge_sec_value(conf->keepalive_header,
1710 prev->keepalive_header, 0);
1711 ngx_conf_merge_msec_value(conf->lingering_time,
1712 prev->lingering_time, 30000);
1713 ngx_conf_merge_msec_value(conf->lingering_timeout,
1714 prev->lingering_timeout, 5000);
1715
1716 ngx_conf_merge_path_value(conf->client_body_temp_path,
1717 prev->client_body_temp_path,
1718 NGX_HTTP_CLIENT_TEMP_PATH, 0, 0, 0,
1719 ngx_garbage_collector_temp_handler, cf);
1720
1721 ngx_conf_merge_value(conf->reset_timedout_connection,
1722 prev->reset_timedout_connection, 0);
1723 ngx_conf_merge_value(conf->msie_padding, prev->msie_padding, 1);
1724
1725 if (conf->open_files == NULL) {
1726 conf->open_files = prev->open_files;
1727 }
1728
1729 return NGX_CONF_OK;
1730 }
1731
1732
1733 static char *
1734 ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
1735 {
1736 ngx_http_core_srv_conf_t *scf = conf;
1737
1738 u_char *addr;
1739 ngx_int_t port;
1740 ngx_uint_t p;
1741 struct hostent *h;
1742 ngx_str_t *args;
1743 ngx_http_listen_t *ls;
1744
1745 /*
1746 * TODO: check duplicate 'listen' directives,
1747 * add resolved name to server names ???
1748 */
1749
1750 if (!(ls = ngx_array_push(&scf->listen))) {
1751 return NGX_CONF_ERROR;
1752 }
1753
1754 /* AF_INET only */
1755
1756 ls->family = AF_INET;
1757 ls->default_server = 0;
1758 ls->file_name = cf->conf_file->file.name;
1759 ls->line = cf->conf_file->line;
1760
1761 args = cf->args->elts;
1762 addr = args[1].data;
1763
1764 for (p = 0; p < args[1].len; p++) {
1765 if (addr[p] == ':') {
1766 addr[p++] = '\0';
1767 break;
1768 }
1769 }
1770
1771 if (p == args[1].len) {
1772 /* no ":" in the "listen" */
1773 p = 0;
1774 }
1775
1776 port = ngx_atoi(&addr[p], args[1].len - p);
1777
1778 if (port == NGX_ERROR && p == 0) {
1779
1780 /* "listen host" */
1781 ls->port = 80;
1782
1783 } else if ((port == NGX_ERROR && p != 0) /* "listen host:NONNUMBER" */
1784 || (port < 1 || port > 65536)) { /* "listen 99999" */
1785
1786 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1787 "invalid port \"%s\" in \"%V\" directive, "
1788 "it must be a number between 1 and 65535",
1789 &addr[p], &cmd->name);
1790
1791 return NGX_CONF_ERROR;
1792
1793 } else if (p == 0) {
1794 ls->addr = INADDR_ANY;
1795 ls->port = (in_port_t) port;
1796 return NGX_CONF_OK;
1797
1798 } else {
1799 ls->port = (in_port_t) port;
1800 }
1801
1802 ls->addr = inet_addr((const char *) addr);
1803
1804 if (ls->addr == INADDR_NONE) {
1805 h = gethostbyname((const char *) addr);
1806
1807 if (h == NULL || h->h_addr_list[0] == NULL) {
1808 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1809 "can not resolve host \"%s\" "
1810 "in \"%V\" directive", addr, &cmd->name);
1811 return NGX_CONF_ERROR;
1812 }
1813
1814 ls->addr = *(in_addr_t *)(h->h_addr_list[0]);
1815 }
1816
1817 return NGX_CONF_OK;
1818 }
1819
1820
1821 static char *
1822 ngx_http_core_server_name(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
1823 {
1824 ngx_http_core_srv_conf_t *scf = conf;
1825
1826 ngx_uint_t i;
1827 ngx_str_t *value;
1828 ngx_http_server_name_t *sn;
1829 ngx_http_core_main_conf_t *cmcf;
1830
1831 /* TODO: warn about duplicate 'server_name' directives */
1832
1833 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
1834
1835 value = cf->args->elts;
1836
1837 for (i = 1; i < cf->args->nelts; i++) {
1838 if (value[i].len == 0) {
1839 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1840 "server name \"%V\" is invalid "
1841 "in \"%V\" directive",
1842 &value[i], &cmd->name);
1843 return NGX_CONF_ERROR;
1844 }
1845
1846 if (!(sn = ngx_array_push(&scf->server_names))) {
1847 return NGX_CONF_ERROR;
1848 }
1849
1850 sn->name.len = value[i].len;
1851 sn->name.data = value[i].data;
1852 sn->core_srv_conf = scf;
1853
1854 if (sn->name.data[0] == '*') {
1855 sn->name.len--;
1856 sn->name.data++;
1857 sn->wildcard = 1;
1858
1859 } else {
1860 sn->wildcard = 0;
1861 }
1862
1863 if (cmcf->max_server_name_len < sn->name.len) {
1864 cmcf->max_server_name_len = sn->name.len;
1865 }
1866 }
1867
1868 return NGX_CONF_OK;
1869 }
1870
1871
1872 static char *
1873 ngx_http_core_root(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
1874 {
1875 ngx_http_core_loc_conf_t *lcf = conf;
1876
1877 ngx_uint_t alias;
1878 ngx_str_t *value;
1879
1880 alias = (cmd->name.len == sizeof("alias") - 1) ? 1 : 0;
1881
1882 if (lcf->root.data) {
1883
1884 /* the (ngx_uint_t) cast is required by gcc 2.7.2.3 */
1885
1886 if ((ngx_uint_t) lcf->alias == alias) {
1887 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1888 "\"%V\" directive is duplicate",
1889 &cmd->name);
1890 } else {
1891 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1892 "\"%V\" directive is duplicate, "
1893 "\"%s\" directive is specified before",
1894 &cmd->name, lcf->alias ? "alias" : "root");
1895 }
1896
1897 return NGX_CONF_ERROR;
1898 }
1899
1900 value = cf->args->elts;
1901
1902 lcf->alias = alias;
1903 lcf->root = value[1];
1904
1905 if (!alias && lcf->root.data[lcf->root.len - 1] == '/') {
1906 lcf->root.len--;
1907 }
1908
1909 return NGX_CONF_OK;
1910 }
1911
1912
1913 static char *
1914 ngx_http_core_error_page(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
1915 {
1916 ngx_http_core_loc_conf_t *lcf = conf;
1917
1918 ngx_int_t overwrite;
1919 ngx_uint_t i, n;
1920 ngx_str_t *value;
1921 ngx_http_err_page_t *err;
1922
1923 if (lcf->error_pages == NULL) {
1924 lcf->error_pages = ngx_array_create(cf->pool, 4,
1925 sizeof(ngx_http_err_page_t));
1926 if (lcf->error_pages == NULL) {
1927 return NGX_CONF_ERROR;
1928 }
1929 }
1930
1931 value = cf->args->elts;
1932
1933 i = cf->args->nelts - 2;
1934
1935 if (value[i].data[0] == '=') {
1936 if (i == 1) {
1937 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1938 "invalid value \"%V\"", &value[i]);
1939 return NGX_CONF_ERROR;
1940 }
1941
1942 overwrite = ngx_atoi(&value[i].data[1], value[i].len - 1);
1943
1944 if (overwrite == NGX_ERROR) {
1945 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1946 "invalid value \"%V\"", &value[i]);
1947 return NGX_CONF_ERROR;
1948 }
1949
1950 n = 2;
1951
1952 } else {
1953 overwrite = 0;
1954 n = 1;
1955 }
1956
1957 for (i = 1; i < cf->args->nelts - n; i++) {
1958 if (!(err = ngx_array_push(lcf->error_pages))) {
1959 return NGX_CONF_ERROR;
1960 }
1961
1962 err->status = ngx_atoi(value[i].data, value[i].len);
1963
1964 if (err->status == NGX_ERROR) {
1965 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1966 "invalid value \"%V\"", &value[i]);
1967 return NGX_CONF_ERROR;
1968 }
1969
1970 if (err->status < 400 || err->status > 599) {
1971 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1972 "value \"%V\" must be between 400 and 599",
1973 &value[i]);
1974 return NGX_CONF_ERROR;
1975 }
1976
1977 err->overwrite = overwrite;
1978 err->uri = value[cf->args->nelts - 1];
1979 }
1980
1981 return NGX_CONF_OK;
1982 }
1983
1984
1985 static char *
1986 ngx_http_core_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
1987 {
1988 ngx_http_core_loc_conf_t *lcf = conf;
1989
1990 ngx_str_t *value;
1991
1992 if (lcf->keepalive_timeout != NGX_CONF_UNSET_MSEC) {
1993 return "is duplicate";
1994 }
1995
1996 value = cf->args->elts;
1997
1998 lcf->keepalive_timeout = ngx_parse_time(&value[1], 0);
1999
2000 if (lcf->keepalive_timeout == (ngx_msec_t) NGX_ERROR) {
2001 return "invalid value";
2002 }
2003
2004 if (lcf->keepalive_timeout == (ngx_msec_t) NGX_PARSE_LARGE_TIME) {
2005 return "value must be less than 597 hours";
2006 }
2007
2008 if (cf->args->nelts == 2) {
2009 return NGX_CONF_OK;
2010 }
2011
2012 lcf->keepalive_header = ngx_parse_time(&value[2], 1);
2013
2014 if (lcf->keepalive_header == NGX_ERROR) {
2015 return "invalid value";
2016 }
2017
2018 if (lcf->keepalive_header == NGX_PARSE_LARGE_TIME) {
2019 return "value must be less than 68 years";
2020 }
2021
2022 return NGX_CONF_OK;
2023 }
2024
2025
2026 static char *
2027 ngx_http_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
2028 {
2029 ngx_http_core_loc_conf_t *lcf = conf;
2030
2031 if (!(lcf->err_log = ngx_log_create_errlog(cf->cycle, cf->args))) {
2032 return NGX_CONF_ERROR;
2033 }
2034
2035 return ngx_set_error_log_levels(cf, lcf->err_log);
2036 }
2037
2038
2039 static char *
2040 ngx_http_core_lowat_check(ngx_conf_t *cf, void *post, void *data)
2041 {
2042 #if (NGX_FREEBSD)
2043 ssize_t *np = data;
2044
2045 if (*np >= ngx_freebsd_net_inet_tcp_sendspace) {
2046 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2047 "\"send_lowat\" must be less than %d "
2048 "(sysctl net.inet.tcp.sendspace)",
2049 ngx_freebsd_net_inet_tcp_sendspace);
2050
2051 return NGX_CONF_ERROR;
2052 }
2053
2054 #elif !(NGX_HAVE_SO_SNDLOWAT)
2055 ssize_t *np = data;
2056
2057 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
2058 "\"send_lowat\" is not supported, ignored");
2059
2060 *np = 0;
2061
2062 #endif
2063
2064 return NGX_CONF_OK;
2065 }
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