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comparison src/http/ngx_http_log_module.c @ 501:d4ea69372b94 release-0.1.25

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nginx-0.1.25-RELEASE import *) Bugfix: nginx did run on Linux parisc. *) Feature: nginx now does not start under FreeBSD if the sysctl kern.ipc.somaxconn value is too big. *) Bugfix: if a request was internally redirected by the ngx_http_index_module module to the ngx_http_proxy_module or ngx_http_fastcgi_module modules, then the index file was not closed after request completion. *) Feature: the "proxy_pass" can be used in location with regular expression. *) Feature: the ngx_http_rewrite_filter_module module supports the condition like "if ($HTTP_USER_AGENT ~ MSIE)". *) Bugfix: nginx started too slow if the large number of addresses and text values were used in the "geo" directive. *) Change: a variable name must be declared as "$name" in the "geo" directive. The previous variant without "$" is still supported, but will be removed soon. *) Feature: the "%{VARIABLE}v" logging parameter. *) Feature: the "set $name value" directive. *) Bugfix: gcc 4.0 compatibility. *) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
author Igor Sysoev <igor@sysoev.ru>
date Sat, 19 Mar 2005 12:38:37 +0000
parents src/http/ngx_http_log_handler.c@64d9afb209da
children ee66921ecd47
comparison
equal deleted inserted replaced
500:9a0f304470f5 501:d4ea69372b94
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_http.h>
10 #include <nginx.h>
11
12
13 static u_char *ngx_http_log_addr(ngx_http_request_t *r, u_char *buf,
14 ngx_http_log_op_t *op);
15 static u_char *ngx_http_log_connection(ngx_http_request_t *r, u_char *buf,
16 ngx_http_log_op_t *op);
17 static u_char *ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf,
18 ngx_http_log_op_t *op);
19 static u_char *ngx_http_log_time(ngx_http_request_t *r, u_char *buf,
20 ngx_http_log_op_t *op);
21 static u_char *ngx_http_log_msec(ngx_http_request_t *r, u_char *buf,
22 ngx_http_log_op_t *op);
23 static u_char *ngx_http_log_request_time(ngx_http_request_t *r, u_char *buf,
24 ngx_http_log_op_t *op);
25 static u_char *ngx_http_log_status(ngx_http_request_t *r, u_char *buf,
26 ngx_http_log_op_t *op);
27 static u_char *ngx_http_log_length(ngx_http_request_t *r, u_char *buf,
28 ngx_http_log_op_t *op);
29 static u_char *ngx_http_log_apache_length(ngx_http_request_t *r, u_char *buf,
30 ngx_http_log_op_t *op);
31 static u_char *ngx_http_log_request_length(ngx_http_request_t *r, u_char *buf,
32 ngx_http_log_op_t *op);
33
34 static size_t ngx_http_log_request_getlen(ngx_http_request_t *r,
35 uintptr_t data);
36 static u_char *ngx_http_log_request(ngx_http_request_t *r, u_char *buf,
37 ngx_http_log_op_t *op);
38
39 static ngx_int_t ngx_http_log_header_in_compile(ngx_conf_t *cf,
40 ngx_http_log_op_t *op, ngx_str_t *value);
41 static size_t ngx_http_log_header_in_getlen(ngx_http_request_t *r,
42 uintptr_t data);
43 static u_char *ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf,
44 ngx_http_log_op_t *op);
45 static size_t ngx_http_log_unknown_header_in_getlen(ngx_http_request_t *r,
46 uintptr_t data);
47 static u_char *ngx_http_log_unknown_header_in(ngx_http_request_t *r,
48 u_char *buf, ngx_http_log_op_t *op);
49
50 static ngx_int_t ngx_http_log_header_out_compile(ngx_conf_t *cf,
51 ngx_http_log_op_t *op, ngx_str_t *value);
52 static size_t ngx_http_log_header_out_getlen(ngx_http_request_t *r,
53 uintptr_t data);
54 static u_char *ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf,
55 ngx_http_log_op_t *op);
56 static size_t ngx_http_log_unknown_header_out_getlen(ngx_http_request_t *r,
57 uintptr_t data);
58 static u_char *ngx_http_log_unknown_header_out(ngx_http_request_t *r,
59 u_char *buf, ngx_http_log_op_t *op);
60
61 static u_char *ngx_http_log_connection_header_out(ngx_http_request_t *r,
62 u_char *buf, ngx_http_log_op_t *op);
63 static u_char *ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r,
64 u_char *buf, ngx_http_log_op_t *op);
65
66 static ngx_table_elt_t *ngx_http_log_unknown_header(ngx_list_t *headers,
67 ngx_str_t *value);
68
69 static ngx_int_t ngx_http_log_variable_compile(ngx_conf_t *cf,
70 ngx_http_log_op_t *op, ngx_str_t *value);
71 static size_t ngx_http_log_variable_getlen(ngx_http_request_t *r,
72 uintptr_t data);
73 static u_char *ngx_http_log_variable(ngx_http_request_t *r, u_char *buf,
74 ngx_http_log_op_t *op);
75
76
77 static ngx_int_t ngx_http_log_set_formats(ngx_conf_t *cf);
78 static void *ngx_http_log_create_main_conf(ngx_conf_t *cf);
79 static void *ngx_http_log_create_loc_conf(ngx_conf_t *cf);
80 static char *ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent,
81 void *child);
82 static char *ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd,
83 void *conf);
84 static char *ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd,
85 void *conf);
86
87
88 static ngx_command_t ngx_http_log_commands[] = {
89
90 { ngx_string("log_format"),
91 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_2MORE,
92 ngx_http_log_set_format,
93 NGX_HTTP_MAIN_CONF_OFFSET,
94 0,
95 NULL },
96
97 { ngx_string("access_log"),
98 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
99 ngx_http_log_set_log,
100 NGX_HTTP_LOC_CONF_OFFSET,
101 0,
102 NULL },
103
104 ngx_null_command
105 };
106
107
108 ngx_http_module_t ngx_http_log_module_ctx = {
109 ngx_http_log_set_formats, /* pre conf */
110
111 ngx_http_log_create_main_conf, /* create main configuration */
112 NULL, /* init main configuration */
113
114 NULL, /* create server configuration */
115 NULL, /* merge server configuration */
116
117 ngx_http_log_create_loc_conf, /* create location configration */
118 ngx_http_log_merge_loc_conf /* merge location configration */
119 };
120
121
122 ngx_module_t ngx_http_log_module = {
123 NGX_MODULE,
124 &ngx_http_log_module_ctx, /* module context */
125 ngx_http_log_commands, /* module directives */
126 NGX_HTTP_MODULE, /* module type */
127 NULL, /* init module */
128 NULL /* init process */
129 };
130
131
132 static ngx_str_t http_access_log = ngx_string(NGX_HTTP_LOG_PATH);
133
134
135 static ngx_str_t ngx_http_combined_fmt =
136 ngx_string("%addr - - [%time] \"%request\" %status %apache_length "
137 "\"%{Referer}i\" \"%{User-Agent}i\"");
138
139
140 ngx_http_log_op_name_t ngx_http_log_fmt_ops[] = {
141 { ngx_string("addr"), INET_ADDRSTRLEN - 1, NULL, NULL, ngx_http_log_addr },
142 { ngx_string("conn"), NGX_ATOMIC_T_LEN, NULL, NULL,
143 ngx_http_log_connection },
144 { ngx_string("pipe"), 1, NULL, NULL, ngx_http_log_pipe },
145 { ngx_string("time"), sizeof("28/Sep/1970:12:00:00 +0600") - 1,
146 NULL, NULL, ngx_http_log_time },
147 { ngx_string("msec"), NGX_TIME_T_LEN + 4, NULL, NULL, ngx_http_log_msec },
148 { ngx_string("request_time"), NGX_TIME_T_LEN, NULL, NULL,
149 ngx_http_log_request_time },
150 { ngx_string("status"), 3, NULL, NULL, ngx_http_log_status },
151 { ngx_string("length"), NGX_OFF_T_LEN, NULL, NULL, ngx_http_log_length },
152 { ngx_string("apache_length"), NGX_OFF_T_LEN,
153 NULL, NULL, ngx_http_log_apache_length },
154 { ngx_string("request_length"), NGX_SIZE_T_LEN,
155 NULL, NULL, ngx_http_log_request_length },
156
157 { ngx_string("request"), 0, NULL,
158 ngx_http_log_request_getlen,
159 ngx_http_log_request },
160
161 { ngx_string("i"), 0, ngx_http_log_header_in_compile, NULL,
162 ngx_http_log_header_in },
163 { ngx_string("o"), 0, ngx_http_log_header_out_compile, NULL,
164 ngx_http_log_header_out },
165 { ngx_string("v"), 0, ngx_http_log_variable_compile, NULL,
166 ngx_http_log_variable },
167
168 { ngx_null_string, 0, NULL, NULL, NULL }
169 };
170
171
172 ngx_int_t
173 ngx_http_log_handler(ngx_http_request_t *r)
174 {
175 ngx_uint_t i, l;
176 u_char *line, *p;
177 size_t len;
178 ngx_http_log_t *log;
179 ngx_http_log_op_t *op;
180 ngx_http_log_loc_conf_t *lcf;
181 #if (NGX_WIN32)
182 u_long written;
183 #endif
184
185 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
186 "http log handler");
187
188 lcf = ngx_http_get_module_loc_conf(r, ngx_http_log_module);
189
190 if (lcf->off) {
191 return NGX_OK;
192 }
193
194 log = lcf->logs->elts;
195 for (l = 0; l < lcf->logs->nelts; l++) {
196
197 len = 0;
198 op = log[l].ops->elts;
199 for (i = 0; i < log[l].ops->nelts; i++) {
200 if (op[i].len == 0) {
201 len += op[i].getlen(r, op[i].data);
202
203 } else {
204 len += op[i].len;
205 }
206 }
207
208 #if (NGX_WIN32)
209 len += 2;
210 #else
211 len++;
212 #endif
213
214 line = ngx_palloc(r->pool, len);
215 if (line == NULL) {
216 return NGX_ERROR;
217 }
218
219 p = line;
220
221 for (i = 0; i < log[l].ops->nelts; i++) {
222 p = op[i].run(r, p, &op[i]);
223 }
224
225 #if (NGX_WIN32)
226 *p++ = CR; *p++ = LF;
227 WriteFile(log[l].file->fd, line, p - line, &written, NULL);
228 #else
229 *p++ = LF;
230 write(log[l].file->fd, line, p - line);
231 #endif
232 }
233
234 return NGX_OK;
235 }
236
237
238 static u_char *
239 ngx_http_log_copy_short(ngx_http_request_t *r, u_char *buf,
240 ngx_http_log_op_t *op)
241 {
242 size_t len;
243 uintptr_t data;
244
245 len = op->len;
246 data = op->data;
247
248 while (len--) {
249 *buf++ = (u_char) (data & 0xff);
250 data >>= 8;
251 }
252
253 return buf;
254 }
255
256
257 static u_char *
258 ngx_http_log_copy_long(ngx_http_request_t *r, u_char *buf,
259 ngx_http_log_op_t *op)
260 {
261 return ngx_cpymem(buf, (u_char *) op->data, op->len);
262 }
263
264
265 static u_char *
266 ngx_http_log_addr(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
267 {
268 return ngx_cpymem(buf, r->connection->addr_text.data,
269 r->connection->addr_text.len);
270 }
271
272
273 static u_char *
274 ngx_http_log_connection(ngx_http_request_t *r, u_char *buf,
275 ngx_http_log_op_t *op)
276 {
277 return ngx_sprintf(buf, "%ui", r->connection->number);
278 }
279
280
281 static u_char *
282 ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
283 {
284 if (r->pipeline) {
285 *buf = 'p';
286 } else {
287 *buf = '.';
288 }
289
290 return buf + 1;
291 }
292
293
294 static u_char *
295 ngx_http_log_time(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
296 {
297 return ngx_cpymem(buf, ngx_cached_http_log_time.data,
298 ngx_cached_http_log_time.len);
299 }
300
301
302 static u_char *
303 ngx_http_log_msec(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
304 {
305 struct timeval tv;
306
307 ngx_gettimeofday(&tv);
308
309 return ngx_sprintf(buf, "%l.%03l", tv.tv_sec, tv.tv_usec / 1000);
310 }
311
312
313 static u_char *
314 ngx_http_log_request_time(ngx_http_request_t *r, u_char *buf,
315 ngx_http_log_op_t *op)
316 {
317 time_t elapsed;
318
319 elapsed = ngx_time() - r->start_time;
320
321 return ngx_sprintf(buf, "%T", elapsed);
322 }
323
324
325 static size_t
326 ngx_http_log_request_getlen(ngx_http_request_t *r, uintptr_t data)
327 {
328 return r->request_line.len;
329 }
330
331
332 static u_char *
333 ngx_http_log_request(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
334 {
335 return ngx_cpymem(buf, r->request_line.data, r->request_line.len);
336 }
337
338
339 static u_char *
340 ngx_http_log_status(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
341 {
342 return ngx_sprintf(buf, "%ui",
343 r->err_status ? r->err_status : r->headers_out.status);
344 }
345
346
347 static u_char *
348 ngx_http_log_length(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
349 {
350 return ngx_sprintf(buf, "%O", r->connection->sent);
351 }
352
353
354 static u_char *
355 ngx_http_log_apache_length(ngx_http_request_t *r, u_char *buf,
356 ngx_http_log_op_t *op)
357 {
358 off_t length;
359
360 length = r->connection->sent - r->header_size;
361
362 if (length > 0) {
363 return ngx_sprintf(buf, "%O", length);
364 }
365
366 *buf = '0';
367
368 return buf + 1;
369 }
370
371
372 static u_char *
373 ngx_http_log_request_length(ngx_http_request_t *r, u_char *buf,
374 ngx_http_log_op_t *op)
375 {
376 return ngx_sprintf(buf, "%z", r->request_length);
377 }
378
379
380 static ngx_int_t
381 ngx_http_log_header_in_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
382 ngx_str_t *value)
383 {
384 ngx_uint_t i;
385
386 op->len = 0;
387
388 for (i = 0; ngx_http_headers_in[i].name.len != 0; i++) {
389
390 if (ngx_http_headers_in[i].name.len != value->len) {
391 continue;
392 }
393
394 if (ngx_strncasecmp(ngx_http_headers_in[i].name.data, value->data,
395 value->len) == 0)
396 {
397 op->getlen = ngx_http_log_header_in_getlen;
398 op->run = ngx_http_log_header_in;
399 op->data = ngx_http_headers_in[i].offset;
400
401 return NGX_OK;
402 }
403 }
404
405 op->getlen = ngx_http_log_unknown_header_in_getlen;
406 op->run = ngx_http_log_unknown_header_in;
407 op->data = (uintptr_t) value;
408
409 return NGX_OK;
410 }
411
412
413 static size_t
414 ngx_http_log_header_in_getlen(ngx_http_request_t *r, uintptr_t data)
415 {
416 ngx_table_elt_t *h;
417
418 h = *(ngx_table_elt_t **) ((char *) &r->headers_in + data);
419
420 if (h) {
421 return h->value.len;
422 }
423
424 return 1;
425 }
426
427
428 static u_char *
429 ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf,
430 ngx_http_log_op_t *op)
431 {
432 ngx_table_elt_t *h;
433
434 h = *(ngx_table_elt_t **) ((char *) &r->headers_in + op->data);
435
436 if (h) {
437 return ngx_cpymem(buf, h->value.data, h->value.len);
438 }
439
440 *buf = '-';
441
442 return buf + 1;
443 }
444
445
446 static size_t
447 ngx_http_log_unknown_header_in_getlen(ngx_http_request_t *r, uintptr_t data)
448 {
449 ngx_table_elt_t *h;
450
451 h = ngx_http_log_unknown_header(&r->headers_in.headers, (ngx_str_t *) data);
452
453 if (h) {
454 return h->value.len;
455 }
456
457 return 1;
458 }
459
460
461 static u_char *
462 ngx_http_log_unknown_header_in(ngx_http_request_t *r, u_char *buf,
463 ngx_http_log_op_t *op)
464 {
465 ngx_table_elt_t *h;
466
467 h = ngx_http_log_unknown_header(&r->headers_in.headers,
468 (ngx_str_t *) op->data);
469
470 if (h) {
471 return ngx_cpymem(buf, h->value.data, h->value.len);
472 }
473
474 *buf = '-';
475
476 return buf + 1;
477 }
478
479
480 static ngx_int_t
481 ngx_http_log_header_out_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
482 ngx_str_t *value)
483 {
484 ngx_uint_t i;
485
486 op->len = 0;
487
488 for (i = 0; ngx_http_headers_out[i].name.len != 0; i++) {
489
490 if (ngx_http_headers_out[i].name.len != value->len) {
491 continue;
492 }
493
494 if (ngx_strncasecmp(ngx_http_headers_out[i].name.data, value->data,
495 value->len) == 0)
496 {
497 op->getlen = ngx_http_log_header_out_getlen;
498 op->run = ngx_http_log_header_out;
499 op->data = ngx_http_headers_out[i].offset;
500
501 return NGX_OK;
502 }
503 }
504
505 if (value->len == sizeof("Connection") - 1
506 && ngx_strncasecmp(value->data, "Connection", value->len) == 0)
507 {
508 op->len = sizeof("keep-alive") - 1;
509 op->getlen = NULL;
510 op->run = ngx_http_log_connection_header_out;
511 op->data = 0;
512 return NGX_OK;
513 }
514
515 if (value->len == sizeof("Transfer-Encoding") - 1
516 && ngx_strncasecmp(value->data, "Transfer-Encoding", value->len) == 0)
517 {
518 op->len = sizeof("chunked") - 1;
519 op->getlen = NULL;
520 op->run = ngx_http_log_transfer_encoding_header_out;
521 op->data = 0;
522 return NGX_OK;
523 }
524
525 op->getlen = ngx_http_log_unknown_header_out_getlen;
526 op->run = ngx_http_log_unknown_header_out;
527 op->data = (uintptr_t) value;
528
529 return NGX_OK;
530 }
531
532
533 static size_t
534 ngx_http_log_header_out_getlen(ngx_http_request_t *r, uintptr_t data)
535 {
536 ngx_table_elt_t *h;
537
538 h = *(ngx_table_elt_t **) ((char *) &r->headers_out + data);
539
540 if (h) {
541 return h->value.len;
542 }
543
544 /*
545 * No header pointer was found.
546 * However, some headers: "Date", "Server", "Content-Length",
547 * and "Last-Modified" have a special handling in the header filter
548 * but we do not set up their pointers in the filter because
549 * they are too seldom needed to be logged.
550 */
551
552 if (data == offsetof(ngx_http_headers_out_t, date)) {
553 return ngx_cached_http_time.len;
554 }
555
556 if (data == offsetof(ngx_http_headers_out_t, server)) {
557 return (sizeof(NGINX_VER) - 1);
558 }
559
560 if (data == offsetof(ngx_http_headers_out_t, content_length)) {
561 if (r->headers_out.content_length_n == -1) {
562 return 1;
563 }
564
565 return NGX_OFF_T_LEN;
566 }
567
568 if (data == offsetof(ngx_http_headers_out_t, last_modified)) {
569 if (r->headers_out.last_modified_time == -1) {
570 return 1;
571 }
572
573 return sizeof("Mon, 28 Sep 1970 06:00:00 GMT") - 1;
574 }
575
576 return 1;
577 }
578
579
580 static u_char *
581 ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf,
582 ngx_http_log_op_t *op)
583 {
584 ngx_table_elt_t *h;
585
586 h = *(ngx_table_elt_t **) ((char *) &r->headers_out + op->data);
587
588 if (h) {
589 return ngx_cpymem(buf, h->value.data, h->value.len);
590 }
591
592 /*
593 * No header pointer was found.
594 * However, some headers: "Date", "Server", "Content-Length",
595 * and "Last-Modified" have a special handling in the header filter
596 * but we do not set up their pointers in the filter because
597 * they are too seldom needed to be logged.
598 */
599
600 if (op->data == offsetof(ngx_http_headers_out_t, date)) {
601 return ngx_cpymem(buf, ngx_cached_http_time.data,
602 ngx_cached_http_time.len);
603 }
604
605 if (op->data == offsetof(ngx_http_headers_out_t, server)) {
606 return ngx_cpymem(buf, NGINX_VER, sizeof(NGINX_VER) - 1);
607 }
608
609 if (op->data == offsetof(ngx_http_headers_out_t, content_length)) {
610 if (r->headers_out.content_length_n == -1) {
611 *buf = '-';
612
613 return buf + 1;
614 }
615
616 return ngx_sprintf(buf, "%O", r->headers_out.content_length_n);
617 }
618
619 if (op->data == offsetof(ngx_http_headers_out_t, last_modified)) {
620 if (r->headers_out.last_modified_time == -1) {
621 *buf = '-';
622
623 return buf + 1;
624 }
625
626 return ngx_http_time(buf, r->headers_out.last_modified_time);
627 }
628
629 *buf = '-';
630
631 return buf + 1;
632 }
633
634
635 static size_t
636 ngx_http_log_unknown_header_out_getlen(ngx_http_request_t *r, uintptr_t data)
637 {
638 ngx_table_elt_t *h;
639
640 h = ngx_http_log_unknown_header(&r->headers_out.headers,
641 (ngx_str_t *) data);
642
643 if (h) {
644 return h->value.len;
645 }
646
647 return 1;
648 }
649
650
651 static u_char *
652 ngx_http_log_unknown_header_out(ngx_http_request_t *r, u_char *buf,
653 ngx_http_log_op_t *op)
654 {
655 ngx_table_elt_t *h;
656
657 h = ngx_http_log_unknown_header(&r->headers_out.headers,
658 (ngx_str_t *) op->data);
659
660 if (h) {
661 return ngx_cpymem(buf, h->value.data, h->value.len);
662 }
663
664 *buf = '-';
665
666 return buf + 1;
667 }
668
669
670 static ngx_table_elt_t *
671 ngx_http_log_unknown_header(ngx_list_t *headers, ngx_str_t *value)
672 {
673 ngx_uint_t i;
674 ngx_list_part_t *part;
675 ngx_table_elt_t *h;
676
677 part = &headers->part;
678 h = part->elts;
679
680 for (i = 0; /* void */; i++) {
681
682 if (i >= part->nelts) {
683 if (part->next == NULL) {
684 break;
685 }
686
687 part = part->next;
688 h = part->elts;
689 i = 0;
690 }
691
692 if (h[i].key.len != value->len) {
693 continue;
694 }
695
696 if (ngx_strncasecmp(h[i].key.data, value->data, value->len) == 0) {
697 return &h[i];
698 }
699 }
700
701 return NULL;
702 }
703
704
705 static u_char *
706 ngx_http_log_connection_header_out(ngx_http_request_t *r, u_char *buf,
707 ngx_http_log_op_t *op)
708 {
709 if (r->keepalive) {
710 return ngx_cpymem(buf, "keep-alive", sizeof("keep-alive") - 1);
711
712 } else {
713 return ngx_cpymem(buf, "close", sizeof("close") - 1);
714 }
715 }
716
717
718 static u_char *
719 ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r, u_char *buf,
720 ngx_http_log_op_t *op)
721 {
722 if (r->chunked) {
723 return ngx_cpymem(buf, "chunked", sizeof("chunked") - 1);
724 }
725
726 *buf = '-';
727
728 return buf + 1;
729 }
730
731
732 static ngx_int_t
733 ngx_http_log_variable_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
734 ngx_str_t *value)
735 {
736 ngx_uint_t i;
737 ngx_http_variable_t *var;
738
739 for (i = 0; i < value->len; i++) {
740 value->data[i] = ngx_toupper(value->data[i]);
741 }
742
743 var = ngx_http_add_variable(cf, value, 0);
744 if (var == NULL) {
745 return NGX_ERROR;
746 }
747
748 op->len = 0;
749 op->getlen = ngx_http_log_variable_getlen;
750 op->run = ngx_http_log_variable;
751 op->data = var->index;
752
753 return NGX_OK;
754 }
755
756
757 static size_t
758 ngx_http_log_variable_getlen(ngx_http_request_t *r, uintptr_t data)
759 {
760 ngx_http_variable_value_t *value;
761
762 value = ngx_http_get_indexed_variable(r, data);
763
764 if (value == NULL
765 || value == NGX_HTTP_VARIABLE_NOT_FOUND
766 || value->text.len == 0)
767 {
768 return 1;
769 }
770
771 return value->text.len;
772 }
773
774
775 static u_char *
776 ngx_http_log_variable(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
777 {
778 ngx_http_variable_value_t *value;
779
780 value = ngx_http_get_indexed_variable(r, op->data);
781
782 if (value == NULL
783 || value == NGX_HTTP_VARIABLE_NOT_FOUND
784 || value->text.len == 0)
785 {
786 *buf = '-';
787 return buf + 1;
788 }
789
790 return ngx_cpymem(buf, value->text.data, value->text.len);
791 }
792
793
794 static ngx_int_t
795 ngx_http_log_set_formats(ngx_conf_t *cf)
796 {
797 ngx_http_log_op_name_t *op;
798
799 for (op = ngx_http_log_fmt_ops; op->name.len; op++) { /* void */ }
800 op->run = NULL;
801
802 return NGX_OK;
803 }
804
805
806 static void *
807 ngx_http_log_create_main_conf(ngx_conf_t *cf)
808 {
809 ngx_http_log_main_conf_t *conf;
810
811 char *rc;
812 ngx_str_t *value;
813
814 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_main_conf_t));
815 if (conf == NULL) {
816 return NGX_CONF_ERROR;
817 }
818
819 if (ngx_array_init(&conf->formats, cf->pool, 4, sizeof(ngx_http_log_fmt_t))
820 == NGX_ERROR)
821 {
822 return NGX_CONF_ERROR;
823 }
824
825 cf->args->nelts = 0;
826
827 value = ngx_array_push(cf->args);
828 if (value == NULL) {
829 return NGX_CONF_ERROR;
830 }
831
832 value = ngx_array_push(cf->args);
833 if (value == NULL) {
834 return NGX_CONF_ERROR;
835 }
836
837 value->len = sizeof("combined") - 1;
838 value->data = (u_char *) "combined";
839
840 value = ngx_array_push(cf->args);
841 if (value == NULL) {
842 return NGX_CONF_ERROR;
843 }
844
845 *value = ngx_http_combined_fmt;
846
847 rc = ngx_http_log_set_format(cf, NULL, conf);
848 if (rc != NGX_CONF_OK) {
849 return NULL;
850 }
851
852 return conf;
853 }
854
855
856 static void *
857 ngx_http_log_create_loc_conf(ngx_conf_t *cf)
858 {
859 ngx_http_log_loc_conf_t *conf;
860
861 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_loc_conf_t));
862 if (conf == NULL) {
863 return NGX_CONF_ERROR;
864 }
865
866 return conf;
867 }
868
869
870 static char *
871 ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
872 {
873 ngx_http_log_loc_conf_t *prev = parent;
874 ngx_http_log_loc_conf_t *conf = child;
875
876 ngx_http_log_t *log;
877 ngx_http_log_fmt_t *fmt;
878 ngx_http_log_main_conf_t *lmcf;
879
880 if (conf->logs == NULL) {
881
882 if (conf->off) {
883 return NGX_CONF_OK;
884 }
885
886 if (prev->logs) {
887 conf->logs = prev->logs;
888
889 } else {
890
891 if (prev->off) {
892 conf->off = prev->off;
893 return NGX_CONF_OK;
894 }
895
896 conf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
897 if (conf->logs == NULL) {
898 return NGX_CONF_ERROR;
899 }
900
901 log = ngx_array_push(conf->logs);
902 if (log == NULL) {
903 return NGX_CONF_ERROR;
904 }
905
906 log->file = ngx_conf_open_file(cf->cycle, &http_access_log);
907 if (log->file == NULL) {
908 return NGX_CONF_ERROR;
909 }
910
911 lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
912 fmt = lmcf->formats.elts;
913
914 /* the default "combined" format */
915 log->ops = fmt[0].ops;
916 }
917 }
918
919 return NGX_CONF_OK;
920 }
921
922
923 static char *
924 ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
925 {
926 ngx_http_log_loc_conf_t *llcf = conf;
927
928 ngx_uint_t i;
929 ngx_str_t *value, name;
930 ngx_http_log_t *log;
931 ngx_http_log_fmt_t *fmt;
932 ngx_http_log_main_conf_t *lmcf;
933
934 value = cf->args->elts;
935
936 if (ngx_strcmp(value[1].data, "off") == 0) {
937 llcf->off = 1;
938 return NGX_CONF_OK;
939 }
940
941 if (llcf->logs == NULL) {
942 llcf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
943 if (llcf->logs == NULL) {
944 return NGX_CONF_ERROR;
945 }
946 }
947
948 lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
949
950 log = ngx_array_push(llcf->logs);
951 if (log == NULL) {
952 return NGX_CONF_ERROR;
953 }
954
955 log->file = ngx_conf_open_file(cf->cycle, &value[1]);
956 if (log->file == NULL) {
957 return NGX_CONF_ERROR;
958 }
959
960 if (cf->args->nelts == 3) {
961 name = value[2];
962 } else {
963 name.len = sizeof("combined") - 1;
964 name.data = (u_char *) "combined";
965 }
966
967 fmt = lmcf->formats.elts;
968 for (i = 0; i < lmcf->formats.nelts; i++) {
969 if (fmt[i].name.len == name.len
970 && ngx_strcasecmp(fmt[i].name.data, name.data) == 0)
971 {
972 log->ops = fmt[i].ops;
973 return NGX_CONF_OK;
974 }
975 }
976
977 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
978 "unknown log format \"%V\"", &name);
979
980 return NGX_CONF_ERROR;
981 }
982
983
984 static char *
985 ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
986 {
987 ngx_http_log_main_conf_t *lmcf = conf;
988
989 ngx_uint_t s, f, invalid;
990 u_char *data, *p, *fname;
991 size_t i, len, fname_len;
992 ngx_str_t *value, arg, *a;
993 ngx_http_log_op_t *op;
994 ngx_http_log_fmt_t *fmt;
995 ngx_http_log_op_name_t *name;
996
997 value = cf->args->elts;
998
999 fmt = lmcf->formats.elts;
1000 for (f = 0; f < lmcf->formats.nelts; f++) {
1001 if (fmt[f].name.len == value[1].len
1002 && ngx_strcmp(fmt->name.data, value[1].data) == 0)
1003 {
1004 return "duplicate \"log_format\" name";
1005 }
1006 }
1007
1008 fmt = ngx_array_push(&lmcf->formats);
1009 if (fmt == NULL) {
1010 return NGX_CONF_ERROR;
1011 }
1012
1013 fmt->name = value[1];
1014
1015 fmt->ops = ngx_array_create(cf->pool, 20, sizeof(ngx_http_log_op_t));
1016 if (fmt->ops == NULL) {
1017 return NGX_CONF_ERROR;
1018 }
1019
1020 invalid = 0;
1021 data = NULL;
1022 arg.data = NULL;
1023
1024 for (s = 2; s < cf->args->nelts && !invalid; s++) {
1025
1026 i = 0;
1027
1028 while (i < value[s].len) {
1029
1030 op = ngx_array_push(fmt->ops);
1031 if (op == NULL) {
1032 return NGX_CONF_ERROR;
1033 }
1034
1035 data = &value[s].data[i];
1036
1037 if (value[s].data[i] == '%') {
1038 i++;
1039
1040 if (i == value[s].len) {
1041 invalid = 1;
1042 break;
1043 }
1044
1045 if (value[s].data[i] == '{') {
1046 i++;
1047
1048 arg.data = &value[s].data[i];
1049
1050 while (i < value[s].len && value[s].data[i] != '}') {
1051 i++;
1052 }
1053
1054 arg.len = &value[s].data[i] - arg.data;
1055
1056 if (i == value[s].len || arg.len == 0) {
1057 invalid = 1;
1058 break;
1059 }
1060
1061 i++;
1062
1063 } else {
1064 arg.len = 0;
1065 }
1066
1067 fname = &value[s].data[i];
1068
1069 while (i < value[s].len
1070 && ((value[s].data[i] >= 'a' && value[s].data[i] <= 'z')
1071 || value[s].data[i] == '_'))
1072 {
1073 i++;
1074 }
1075
1076 fname_len = &value[s].data[i] - fname;
1077
1078 if (fname_len == 0) {
1079 invalid = 1;
1080 break;
1081 }
1082
1083 for (name = ngx_http_log_fmt_ops; name->run; name++) {
1084 if (name->name.len == 0) {
1085 name = (ngx_http_log_op_name_t *) name->run;
1086 }
1087
1088 if (name->name.len == fname_len
1089 && ngx_strncmp(name->name.data, fname, fname_len) == 0)
1090 {
1091 if (name->compile == NULL) {
1092 if (arg.len) {
1093 fname[fname_len] = '\0';
1094 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1095 "\"%s\" must not have argument",
1096 data);
1097 return NGX_CONF_ERROR;
1098 }
1099
1100 op->len = name->len;
1101 op->getlen = name->getlen;
1102 op->run = name->run;
1103 op->data = 0;
1104
1105 break;
1106 }
1107
1108 if (arg.len == 0) {
1109 fname[fname_len] = '\0';
1110 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1111 "\"%s\" requires argument",
1112 data);
1113 return NGX_CONF_ERROR;
1114 }
1115
1116 a = ngx_palloc(cf->pool, sizeof(ngx_str_t));
1117 if (a == NULL) {
1118 return NGX_CONF_ERROR;
1119 }
1120
1121 *a = arg;
1122 if (name->compile(cf, op, a) == NGX_ERROR) {
1123 return NGX_CONF_ERROR;
1124 }
1125
1126 break;
1127 }
1128 }
1129
1130 if (name->name.len == 0) {
1131 invalid = 1;
1132 break;
1133 }
1134
1135 } else {
1136 i++;
1137
1138 while (i < value[s].len && value[s].data[i] != '%') {
1139 i++;
1140 }
1141
1142 len = &value[s].data[i] - data;
1143
1144 if (len) {
1145
1146 op->len = len;
1147 op->getlen = NULL;
1148
1149 if (len <= sizeof(uintptr_t)) {
1150 op->run = ngx_http_log_copy_short;
1151 op->data = 0;
1152
1153 while (len--) {
1154 op->data <<= 8;
1155 op->data |= data[len];
1156 }
1157
1158 } else {
1159 op->run = ngx_http_log_copy_long;
1160
1161 p = ngx_palloc(cf->pool, len);
1162 if (p == NULL) {
1163 return NGX_CONF_ERROR;
1164 }
1165
1166 ngx_memcpy(p, data, len);
1167 op->data = (uintptr_t) p;
1168 }
1169 }
1170 }
1171 }
1172 }
1173
1174 if (invalid) {
1175 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1176 "invalid parameter \"%s\"", data);
1177 return NGX_CONF_ERROR;
1178 }
1179
1180 return NGX_CONF_OK;
1181 }