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comparison src/http/ngx_http_log_handler.c @ 0:f0b350454894 NGINX_0_1_0

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nginx 0.1.0 *) The first public version.
author Igor Sysoev <http://sysoev.ru>
date Mon, 04 Oct 2004 00:00:00 +0400
parents
children 4b2dafa26fe2
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-1:000000000000 0:f0b350454894
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 uintptr_t data);
15 static u_char *ngx_http_log_connection(ngx_http_request_t *r, u_char *buf,
16 uintptr_t data);
17 static u_char *ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf,
18 uintptr_t data);
19 static u_char *ngx_http_log_time(ngx_http_request_t *r, u_char *buf,
20 uintptr_t data);
21 static u_char *ngx_http_log_msec(ngx_http_request_t *r, u_char *buf,
22 uintptr_t data);
23 static u_char *ngx_http_log_request(ngx_http_request_t *r, u_char *buf,
24 uintptr_t data);
25 static u_char *ngx_http_log_status(ngx_http_request_t *r, u_char *buf,
26 uintptr_t data);
27 static u_char *ngx_http_log_length(ngx_http_request_t *r, u_char *buf,
28 uintptr_t data);
29 static u_char *ngx_http_log_apache_length(ngx_http_request_t *r, u_char *buf,
30 uintptr_t data);
31 static u_char *ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf,
32 uintptr_t data);
33 static u_char *ngx_http_log_connection_header_out(ngx_http_request_t *r,
34 u_char *buf, uintptr_t data);
35 static u_char *ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r,
36 u_char *buf,
37 uintptr_t data);
38 static u_char *ngx_http_log_unknown_header_in(ngx_http_request_t *r,
39 u_char *buf, uintptr_t data);
40 static u_char *ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf,
41 uintptr_t data);
42 static u_char *ngx_http_log_unknown_header_out(ngx_http_request_t *r, u_char *buf,
43 uintptr_t data);
44
45 static ngx_int_t ngx_http_log_pre_conf(ngx_conf_t *cf);
46 static void *ngx_http_log_create_main_conf(ngx_conf_t *cf);
47 static void *ngx_http_log_create_loc_conf(ngx_conf_t *cf);
48 static char *ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent,
49 void *child);
50 static char *ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd,
51 void *conf);
52 static char *ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd,
53 void *conf);
54 static ngx_int_t ngx_http_log_parse_format(ngx_conf_t *cf, ngx_array_t *ops,
55 ngx_str_t *line);
56
57
58 static ngx_command_t ngx_http_log_commands[] = {
59
60 {ngx_string("log_format"),
61 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_2MORE,
62 ngx_http_log_set_format,
63 NGX_HTTP_MAIN_CONF_OFFSET,
64 0,
65 NULL},
66
67 {ngx_string("access_log"),
68 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
69 ngx_http_log_set_log,
70 NGX_HTTP_LOC_CONF_OFFSET,
71 0,
72 NULL},
73
74 ngx_null_command
75 };
76
77
78 ngx_http_module_t ngx_http_log_module_ctx = {
79 ngx_http_log_pre_conf, /* pre conf */
80
81 ngx_http_log_create_main_conf, /* create main configuration */
82 NULL, /* init main configuration */
83
84 NULL, /* create server configuration */
85 NULL, /* merge server configuration */
86
87 ngx_http_log_create_loc_conf, /* create location configration */
88 ngx_http_log_merge_loc_conf /* merge location configration */
89 };
90
91
92 ngx_module_t ngx_http_log_module = {
93 NGX_MODULE,
94 &ngx_http_log_module_ctx, /* module context */
95 ngx_http_log_commands, /* module directives */
96 NGX_HTTP_MODULE, /* module type */
97 NULL, /* init module */
98 NULL /* init child */
99 };
100
101
102 static ngx_str_t http_access_log = ngx_string(NGX_HTTP_LOG_PATH);
103
104
105 static ngx_str_t ngx_http_combined_fmt =
106 ngx_string("%addr - - [%time] \"%request\" %status %apache_length "
107 "\"%{Referer}i\" \"%{User-Agent}i\"");
108
109
110 ngx_http_log_op_name_t ngx_http_log_fmt_ops[] = {
111 { ngx_string("addr"), INET_ADDRSTRLEN - 1, ngx_http_log_addr },
112 { ngx_string("conn"), NGX_INT32_LEN, ngx_http_log_connection },
113 { ngx_string("pipe"), 1, ngx_http_log_pipe },
114 { ngx_string("time"), sizeof("28/Sep/1970:12:00:00") - 1,
115 ngx_http_log_time },
116 { ngx_string("msec"), TIME_T_LEN + 4, ngx_http_log_msec },
117 { ngx_string("request"), 0, ngx_http_log_request },
118 { ngx_string("status"), 3, ngx_http_log_status },
119 { ngx_string("length"), NGX_OFF_T_LEN, ngx_http_log_length },
120 { ngx_string("apache_length"), NGX_OFF_T_LEN, ngx_http_log_apache_length },
121 { ngx_string("i"), NGX_HTTP_LOG_ARG, ngx_http_log_header_in },
122 { ngx_string("o"), NGX_HTTP_LOG_ARG, ngx_http_log_header_out },
123 { ngx_null_string, 0, NULL }
124 };
125
126
127 ngx_int_t ngx_http_log_handler(ngx_http_request_t *r)
128 {
129 ngx_uint_t i, l;
130 uintptr_t data;
131 u_char *line, *p;
132 size_t len;
133 ngx_http_log_t *log;
134 ngx_http_log_op_t *op;
135 ngx_http_log_loc_conf_t *lcf;
136 #if (WIN32)
137 u_long written;
138 #endif
139
140 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
141 "http log handler");
142
143 lcf = ngx_http_get_module_loc_conf(r, ngx_http_log_module);
144
145 if (lcf->off) {
146 return NGX_OK;
147 }
148
149 log = lcf->logs->elts;
150 for (l = 0; l < lcf->logs->nelts; l++) {
151
152 len = 0;
153 op = log[l].ops->elts;
154 for (i = 0; i < log[l].ops->nelts; i++) {
155 if (op[i].len == 0) {
156 len += (size_t) op[i].op(r, NULL, op[i].data);
157
158 } else {
159 len += op[i].len;
160 }
161 }
162
163 #if (WIN32)
164 len += 2;
165 #else
166 len++;
167 #endif
168
169 ngx_test_null(line, ngx_palloc(r->pool, len), NGX_ERROR);
170 p = line;
171
172 for (i = 0; i < log[l].ops->nelts; i++) {
173 if (op[i].op == NGX_HTTP_LOG_COPY_SHORT) {
174 len = op[i].len;
175 data = op[i].data;
176 while (len--) {
177 *p++ = (char) (data & 0xff);
178 data >>= 8;
179 }
180
181 } else if (op[i].op == NGX_HTTP_LOG_COPY_LONG) {
182 p = ngx_cpymem(p, (void *) op[i].data, op[i].len);
183
184 } else {
185 p = op[i].op(r, p, op[i].data);
186 }
187 }
188
189 #if (WIN32)
190 *p++ = CR; *p++ = LF;
191 WriteFile(log[l].file->fd, line, p - line, &written, NULL);
192 #else
193 *p++ = LF;
194 write(log[l].file->fd, line, p - line);
195 #endif
196 }
197
198 return NGX_OK;
199 }
200
201
202 static u_char *ngx_http_log_addr(ngx_http_request_t *r, u_char *buf,
203 uintptr_t data)
204 {
205 return ngx_cpymem(buf, r->connection->addr_text.data,
206 r->connection->addr_text.len);
207 }
208
209
210 static u_char *ngx_http_log_connection(ngx_http_request_t *r, u_char *buf,
211 uintptr_t data)
212 {
213 return buf + ngx_snprintf((char *) buf, NGX_INT_T_LEN + 1,
214 "%" NGX_UINT_T_FMT,
215 r->connection->number);
216 }
217
218
219 static u_char *ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf,
220 uintptr_t data)
221 {
222 if (r->pipeline) {
223 *buf = 'p';
224 } else {
225 *buf = '.';
226 }
227
228 return buf + 1;
229 }
230
231
232 static u_char *ngx_http_log_time(ngx_http_request_t *r, u_char *buf,
233 uintptr_t data)
234 {
235 return ngx_cpymem(buf, ngx_cached_http_log_time.data,
236 ngx_cached_http_log_time.len);
237 }
238
239
240 static u_char *ngx_http_log_msec(ngx_http_request_t *r, u_char *buf,
241 uintptr_t data)
242 {
243 struct timeval tv;
244
245 ngx_gettimeofday(&tv);
246
247 return buf + ngx_snprintf((char *) buf, TIME_T_LEN + 5, "%ld.%03ld",
248 tv.tv_sec, tv.tv_usec / 1000);
249 }
250
251
252 static u_char *ngx_http_log_request(ngx_http_request_t *r, u_char *buf,
253 uintptr_t data)
254 {
255 if (buf == NULL) {
256 /* find the request line length */
257 return (u_char *) r->request_line.len;
258 }
259
260 return ngx_cpymem(buf, r->request_line.data, r->request_line.len);
261 }
262
263
264 static u_char *ngx_http_log_status(ngx_http_request_t *r, u_char *buf,
265 uintptr_t data)
266 {
267 return buf + ngx_snprintf((char *) buf, 4, "%" NGX_UINT_T_FMT,
268 r->err_status ? r->err_status : r->headers_out.status);
269 }
270
271
272 static u_char *ngx_http_log_length(ngx_http_request_t *r, u_char *buf,
273 uintptr_t data)
274 {
275 return buf + ngx_snprintf((char *) buf, NGX_OFF_T_LEN + 1, OFF_T_FMT,
276 r->connection->sent);
277 }
278
279
280 static u_char *ngx_http_log_apache_length(ngx_http_request_t *r, u_char *buf,
281 uintptr_t data)
282 {
283 return buf + ngx_snprintf((char *) buf, NGX_OFF_T_LEN + 1, OFF_T_FMT,
284 r->connection->sent - r->header_size);
285 }
286
287
288 static u_char *ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf,
289 uintptr_t data)
290 {
291 ngx_uint_t i;
292 ngx_str_t *s;
293 ngx_table_elt_t *h;
294 ngx_http_log_op_t *op;
295
296 if (r) {
297 h = *(ngx_table_elt_t **) ((char *) &r->headers_in + data);
298
299 if (h == NULL) {
300
301 /* no header */
302
303 if (buf) {
304 *buf = '-';
305 }
306
307 return buf + 1;
308 }
309
310 if (buf == NULL) {
311 /* find the header length */
312 return (u_char *) h->value.len;
313 }
314
315 return ngx_cpymem(buf, h->value.data, h->value.len);
316 }
317
318 /* find an offset while a format string compilation */
319
320 op = (ngx_http_log_op_t *) buf;
321 s = (ngx_str_t *) data;
322
323 op->len = 0;
324
325 for (i = 0; ngx_http_headers_in[i].name.len != 0; i++) {
326 if (ngx_http_headers_in[i].name.len != s->len) {
327 continue;
328 }
329
330 if (ngx_strncasecmp(ngx_http_headers_in[i].name.data, s->data, s->len)
331 == 0)
332 {
333 op->op = ngx_http_log_header_in;
334 op->data = ngx_http_headers_in[i].offset;
335 return NULL;
336 }
337 }
338
339 op->op = ngx_http_log_unknown_header_in;
340 op->data = (uintptr_t) s;
341
342 return NULL;
343 }
344
345
346 static u_char *ngx_http_log_unknown_header_in(ngx_http_request_t *r,
347 u_char *buf, uintptr_t data)
348 {
349 ngx_uint_t i;
350 ngx_str_t *s;
351 ngx_list_part_t *part;
352 ngx_table_elt_t *h;
353
354 s = (ngx_str_t *) data;
355
356 part = &r->headers_in.headers.part;
357 h = part->elts;
358
359 for (i = 0; /* void */; i++) {
360
361 if (i >= part->nelts) {
362 if (part->next == NULL) {
363 break;
364 }
365
366 part = part->next;
367 h = part->elts;
368 i = 0;
369 }
370
371 if (h[i].key.len != s->len) {
372 continue;
373 }
374
375 if (ngx_strncasecmp(h[i].key.data, s->data, s->len) == 0) {
376 if (buf == NULL) {
377 /* find the header length */
378 return (u_char *) h[i].value.len;
379 }
380
381 return ngx_cpymem(buf, h[i].value.data, h[i].value.len);
382 }
383 }
384
385 /* no header */
386
387 if (buf) {
388 *buf = '-';
389 }
390
391 return buf + 1;
392 }
393
394
395 static u_char *ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf,
396 uintptr_t data)
397 {
398 ngx_uint_t i;
399 ngx_str_t *s;
400 ngx_table_elt_t *h;
401 ngx_http_log_op_t *op;
402
403 if (r) {
404
405 /* run-time execution */
406
407 if (r->http_version < NGX_HTTP_VERSION_10) {
408 if (buf) {
409 *buf = '-';
410 }
411
412 return buf + 1;
413 }
414
415 h = *(ngx_table_elt_t **) ((char *) &r->headers_out + data);
416
417 if (h == NULL) {
418
419 /*
420 * No header pointer was found.
421 * However, some headers: "Date", "Server", "Content-Length",
422 * and "Last-Modified" have a special handling in the header filter
423 * but we do not set up their pointers in the filter because
424 * they are too seldom needed to be logged.
425 */
426
427 if (data == offsetof(ngx_http_headers_out_t, date)) {
428 if (buf == NULL) {
429 return (u_char *) ngx_cached_http_time.len;
430 }
431 return ngx_cpymem(buf, ngx_cached_http_time.data,
432 ngx_cached_http_time.len);
433 }
434
435 if (data == offsetof(ngx_http_headers_out_t, server)) {
436 if (buf == NULL) {
437 return (u_char *) (sizeof(NGINX_VER) - 1);
438 }
439 return ngx_cpymem(buf, NGINX_VER, sizeof(NGINX_VER) - 1);
440 }
441
442 if (data == offsetof(ngx_http_headers_out_t, content_length)) {
443 if (r->headers_out.content_length_n == -1) {
444 if (buf) {
445 *buf = '-';
446 }
447 return buf + 1;
448 }
449
450 if (buf == NULL) {
451 return (u_char *) NGX_OFF_T_LEN;
452 }
453 return buf + ngx_snprintf((char *) buf,
454 NGX_OFF_T_LEN + 2, OFF_T_FMT,
455 r->headers_out.content_length_n);
456 }
457
458 if (data == offsetof(ngx_http_headers_out_t, last_modified)) {
459 if (r->headers_out.last_modified_time == -1) {
460 if (buf) {
461 *buf = '-';
462 }
463 return buf + 1;
464 }
465
466 if (buf == NULL) {
467 return (u_char *)
468 sizeof("Mon, 28 Sep 1970 06:00:00 GMT") - 1;
469 }
470 return buf + ngx_http_time(buf,
471 r->headers_out.last_modified_time);
472 }
473
474 if (buf) {
475 *buf = '-';
476 }
477
478 return buf + 1;
479 }
480
481 if (buf == NULL) {
482 /* find the header length */
483 return (u_char *) h->value.len;
484 }
485
486 return ngx_cpymem(buf, h->value.data, h->value.len);
487 }
488
489 /* find an offset while a format string compilation */
490
491 op = (ngx_http_log_op_t *) buf;
492 s = (ngx_str_t *) data;
493
494 op->len = 0;
495
496 for (i = 0; ngx_http_headers_out[i].name.len != 0; i++) {
497 if (ngx_http_headers_out[i].name.len != s->len) {
498 continue;
499 }
500
501 if (ngx_strncasecmp(ngx_http_headers_out[i].name.data, s->data, s->len)
502 == 0)
503 {
504 op->op = ngx_http_log_header_out;
505 op->data = ngx_http_headers_out[i].offset;
506 return NULL;
507 }
508 }
509
510 if (s->len == sizeof("Connection") - 1
511 && ngx_strncasecmp(s->data, "Connection", s->len) == 0)
512 {
513 op->op = ngx_http_log_connection_header_out;
514 op->data = (uintptr_t) NULL;
515 return NULL;
516 }
517
518 if (s->len == sizeof("Transfer-Encoding") - 1
519 && ngx_strncasecmp(s->data, "Transfer-Encoding", s->len) == 0) {
520 op->op = ngx_http_log_transfer_encoding_header_out;
521 op->data = (uintptr_t) NULL;
522 return NULL;
523 }
524
525 op->op = ngx_http_log_unknown_header_out;
526 op->data = (uintptr_t) s;
527
528 return NULL;
529 }
530
531
532 static u_char *ngx_http_log_connection_header_out(ngx_http_request_t *r,
533 u_char *buf, uintptr_t data)
534 {
535 if (buf == NULL) {
536 return (u_char *) ((r->keepalive) ? sizeof("keep-alive") - 1:
537 sizeof("close") - 1);
538 }
539
540 if (r->keepalive) {
541 return ngx_cpymem(buf, "keep-alive", sizeof("keep-alive") - 1);
542
543 } else {
544 return ngx_cpymem(buf, "close", sizeof("close") - 1);
545 }
546 }
547
548
549 static u_char *ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r,
550 u_char *buf,
551 uintptr_t data)
552 {
553 if (buf == NULL) {
554 return (u_char *) ((r->chunked) ? sizeof("chunked") - 1 : 1);
555 }
556
557 if (r->chunked) {
558 return ngx_cpymem(buf, "chunked", sizeof("chunked") - 1);
559 }
560
561 *buf = '-';
562
563 return buf + 1;
564 }
565
566
567 static u_char *ngx_http_log_unknown_header_out(ngx_http_request_t *r,
568 u_char *buf,
569 uintptr_t data)
570 {
571 ngx_uint_t i;
572 ngx_str_t *s;
573 ngx_list_part_t *part;
574 ngx_table_elt_t *h;
575
576 s = (ngx_str_t *) data;
577
578 part = &r->headers_out.headers.part;
579 h = part->elts;
580
581 for (i = 0; /* void */; i++) {
582
583 if (i >= part->nelts) {
584 if (part->next == NULL) {
585 break;
586 }
587
588 part = part->next;
589 h = part->elts;
590 i = 0;
591 }
592
593 if (h[i].key.len != s->len) {
594 continue;
595 }
596
597 if (ngx_strncasecmp(h[i].key.data, s->data, s->len) == 0) {
598 if (buf == NULL) {
599 /* find the header length */
600 return (u_char *) h[i].value.len;
601 }
602
603 return ngx_cpymem(buf, h[i].value.data, h[i].value.len);
604 }
605 }
606
607 /* no header */
608
609 if (buf) {
610 *buf = '-';
611 }
612
613 return buf + 1;
614 }
615
616
617 static ngx_int_t ngx_http_log_pre_conf(ngx_conf_t *cf)
618 {
619 ngx_http_log_op_name_t *op;
620
621 for (op = ngx_http_log_fmt_ops; op->name.len; op++) { /* void */ }
622 op->op = NULL;
623
624 return NGX_OK;
625 }
626
627
628 static void *ngx_http_log_create_main_conf(ngx_conf_t *cf)
629 {
630 ngx_http_log_main_conf_t *conf;
631
632 char *rc;
633 ngx_str_t *value;
634
635 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_main_conf_t)))) {
636 return NGX_CONF_ERROR;
637 }
638
639 ngx_init_array(conf->formats, cf->pool, 5, sizeof(ngx_http_log_fmt_t),
640 NGX_CONF_ERROR);
641
642 cf->args->nelts = 0;
643
644 if (!(value = ngx_push_array(cf->args))) {
645 return NGX_CONF_ERROR;
646 }
647
648 if (!(value = ngx_push_array(cf->args))) {
649 return NGX_CONF_ERROR;
650 }
651
652 value->len = sizeof("combined") - 1;
653 value->data = (u_char *) "combined";
654
655 if (!(value = ngx_push_array(cf->args))) {
656 return NGX_CONF_ERROR;
657 }
658
659 *value = ngx_http_combined_fmt;
660
661 rc = ngx_http_log_set_format(cf, NULL, conf);
662 if (rc != NGX_CONF_OK) {
663 return NULL;
664 }
665
666 return conf;
667 }
668
669
670 static void *ngx_http_log_create_loc_conf(ngx_conf_t *cf)
671 {
672 ngx_http_log_loc_conf_t *conf;
673
674 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_loc_conf_t)))) {
675 return NGX_CONF_ERROR;
676 }
677
678 return conf;
679 }
680
681
682 static char *ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent,
683 void *child)
684 {
685 ngx_http_log_loc_conf_t *prev = parent;
686 ngx_http_log_loc_conf_t *conf = child;
687
688 ngx_http_log_t *log;
689 ngx_http_log_fmt_t *fmt;
690 ngx_http_log_main_conf_t *lmcf;
691
692 if (conf->logs == NULL) {
693
694 if (conf->off) {
695 return NGX_CONF_OK;
696 }
697
698 if (prev->logs) {
699 conf->logs = prev->logs;
700
701 } else {
702
703 if (prev->off) {
704 conf->off = prev->off;
705 return NGX_CONF_OK;
706 }
707
708 conf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
709 if (conf->logs == NULL) {
710 return NGX_CONF_ERROR;
711 }
712
713 if (!(log = ngx_array_push(conf->logs))) {
714 return NGX_CONF_ERROR;
715 }
716
717 log->file = ngx_conf_open_file(cf->cycle, &http_access_log);
718 if (log->file == NULL) {
719 return NGX_CONF_ERROR;
720 }
721
722 lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
723 fmt = lmcf->formats.elts;
724
725 /* the default "combined" format */
726 log->ops = fmt[0].ops;
727 }
728 }
729
730 return NGX_CONF_OK;
731 }
732
733
734 static char *ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd,
735 void *conf)
736 {
737 ngx_http_log_loc_conf_t *llcf = conf;
738
739 ngx_uint_t i;
740 ngx_str_t *value, name;
741 ngx_http_log_t *log;
742 ngx_http_log_fmt_t *fmt;
743 ngx_http_log_main_conf_t *lmcf;
744
745 value = cf->args->elts;
746
747 if (ngx_strcmp(value[1].data, "off") == 0) {
748 llcf->off = 1;
749 return NGX_CONF_OK;
750 }
751
752 if (llcf->logs == NULL) {
753 llcf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
754 if (llcf->logs == NULL) {
755 return NGX_CONF_ERROR;
756 }
757 }
758
759 lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
760
761 if (!(log = ngx_array_push(llcf->logs))) {
762 return NGX_CONF_ERROR;
763 }
764
765 if (!(log->file = ngx_conf_open_file(cf->cycle, &value[1]))) {
766 return NGX_CONF_ERROR;
767 }
768
769 if (cf->args->nelts == 3) {
770 name = value[2];
771 } else {
772 name.len = sizeof("combined") - 1;
773 name.data = (u_char *) "combined";
774 }
775
776 fmt = lmcf->formats.elts;
777 for (i = 0; i < lmcf->formats.nelts; i++) {
778 if (fmt[i].name.len == name.len
779 && ngx_strcasecmp(fmt[i].name.data, name.data) == 0)
780 {
781 log->ops = fmt[i].ops;
782 return NGX_CONF_OK;
783 }
784 }
785
786 return NGX_CONF_OK;
787 }
788
789
790 static char *ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd,
791 void *conf)
792 {
793 ngx_http_log_main_conf_t *lmcf = conf;
794
795 ngx_uint_t s, f, invalid;
796 u_char *data, *p, *fname;
797 size_t i, len, fname_len;
798 ngx_str_t *value, arg, *a;
799 ngx_http_log_op_t *op;
800 ngx_http_log_fmt_t *fmt;
801 ngx_http_log_op_name_t *name;
802
803 value = cf->args->elts;
804
805 fmt = lmcf->formats.elts;
806 for (f = 0; f < lmcf->formats.nelts; f++) {
807 if (fmt[f].name.len == value[1].len
808 && ngx_strcmp(fmt->name.data, value[1].data) == 0)
809 {
810 return "duplicate \"log_format\" name";
811 }
812 }
813
814 if (!(fmt = ngx_push_array(&lmcf->formats))) {
815 return NGX_CONF_ERROR;
816 }
817
818 fmt->name = value[1];
819
820 if (!(fmt->ops = ngx_create_array(cf->pool, 20,
821 sizeof(ngx_http_log_op_t)))) {
822 return NGX_CONF_ERROR;
823 }
824
825 invalid = 0;
826 data = NULL;
827
828 for (s = 2; s < cf->args->nelts && !invalid; s++) {
829
830 i = 0;
831
832 while (i < value[s].len) {
833
834 if (!(op = ngx_push_array(fmt->ops))) {
835 return NGX_CONF_ERROR;
836 }
837
838 data = &value[s].data[i];
839
840 if (value[s].data[i] == '%') {
841 i++;
842
843 if (i == value[s].len) {
844 invalid = 1;
845 break;
846 }
847
848 if (value[s].data[i] == '{') {
849 i++;
850
851 arg.data = &value[s].data[i];
852
853 while (i < value[s].len && value[s].data[i] != '}') {
854 i++;
855 }
856
857 arg.len = &value[s].data[i] - arg.data;
858
859 if (i == value[s].len || arg.len == 0) {
860 invalid = 1;
861 break;
862 }
863
864 i++;
865
866 } else {
867 arg.len = 0;
868 }
869
870 fname = &value[s].data[i];
871
872 while (i < value[s].len
873 && ((value[s].data[i] >= 'a' && value[s].data[i] <= 'z')
874 || value[s].data[i] == '_'))
875 {
876 i++;
877 }
878
879 fname_len = &value[s].data[i] - fname;
880
881 if (fname_len == 0) {
882 invalid = 1;
883 break;
884 }
885
886 for (name = ngx_http_log_fmt_ops; name->op; name++) {
887 if (name->name.len == 0) {
888 name = (ngx_http_log_op_name_t *) name->op;
889 }
890
891 if (name->name.len == fname_len
892 && ngx_strncmp(name->name.data, fname, fname_len) == 0)
893 {
894 if (name->len != NGX_HTTP_LOG_ARG) {
895 if (arg.len) {
896 fname[fname_len] = '\0';
897 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
898 "\"%s\" must not have argument",
899 data);
900 return NGX_CONF_ERROR;
901 }
902
903 op->len = name->len;
904 op->op = name->op;
905 op->data = 0;
906
907 break;
908 }
909
910 if (arg.len == 0) {
911 fname[fname_len] = '\0';
912 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
913 "\"%s\" requires argument",
914 data);
915 return NGX_CONF_ERROR;
916 }
917
918 if (!(a = ngx_palloc(cf->pool, sizeof(ngx_str_t)))) {
919 return NGX_CONF_ERROR;
920 }
921
922 *a = arg;
923 name->op(NULL, (u_char *) op, (uintptr_t) a);
924
925 break;
926 }
927 }
928
929 if (name->name.len == 0) {
930 invalid = 1;
931 break;
932 }
933
934 } else {
935 i++;
936
937 while (i < value[s].len && value[s].data[i] != '%') {
938 i++;
939 }
940
941 len = &value[s].data[i] - data;
942
943 if (len) {
944
945 op->len = len;
946
947 if (len <= sizeof(uintptr_t)) {
948 op->op = NGX_HTTP_LOG_COPY_SHORT;
949 op->data = 0;
950
951 while (len--) {
952 op->data <<= 8;
953 op->data |= data[len];
954 }
955
956 } else {
957 op->op = NGX_HTTP_LOG_COPY_LONG;
958
959 if (!(p = ngx_palloc(cf->pool, len))) {
960 return NGX_CONF_ERROR;
961 }
962
963 ngx_memcpy(p, data, len);
964 op->data = (uintptr_t) p;
965 }
966 }
967 }
968 }
969 }
970
971 if (invalid) {
972 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
973 "invalid parameter \"%s\"", data);
974 return NGX_CONF_ERROR;
975 }
976
977 return NGX_CONF_OK;
978 }