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comparison src/http/modules/ngx_http_userid_filter_module.c @ 50:72eb30262aac NGINX_0_1_25

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nginx 0.1.25 *) 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 <http://sysoev.ru>
date Sat, 19 Mar 2005 00:00:00 +0300
parents src/http/modules/ngx_http_userid_filter.c@6cfc63e68377
children 0d75d65c642f
comparison
equal deleted inserted replaced
49:93dabbc9efb9 50:72eb30262aac
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
11
12 #define NGX_HTTP_USERID_OFF 0
13 #define NGX_HTTP_USERID_LOG 1
14 #define NGX_HTTP_USERID_V1 2
15 #define NGX_HTTP_USERID_ON 3
16
17 /* 31 Dec 2037 23:55:55 GMT */
18 #define NGX_HTTP_USERID_MAX_EXPIRES 2145916555
19
20
21 typedef struct {
22 ngx_flag_t enable;
23
24 ngx_int_t service;
25
26 ngx_str_t name;
27 ngx_str_t domain;
28 ngx_str_t path;
29 time_t expires;
30 ngx_str_t p3p;
31 } ngx_http_userid_conf_t;
32
33
34 typedef struct {
35 uint32_t uid_got[4];
36 uint32_t uid_set[4];
37 } ngx_http_userid_ctx_t;
38
39
40 static ngx_int_t ngx_http_userid_get_uid(ngx_http_request_t *r,
41 ngx_http_userid_ctx_t *ctx, ngx_http_userid_conf_t *conf);
42 static ngx_int_t ngx_http_userid_set_uid(ngx_http_request_t *r,
43 ngx_http_userid_ctx_t *ctx, ngx_http_userid_conf_t *conf);
44
45 static size_t ngx_http_userid_log_uid_got_getlen(ngx_http_request_t *r,
46 uintptr_t data);
47 static u_char *ngx_http_userid_log_uid_got(ngx_http_request_t *r, u_char *buf,
48 ngx_http_log_op_t *op);
49 static size_t ngx_http_userid_log_uid_set_getlen(ngx_http_request_t *r,
50 uintptr_t data);
51 static u_char *ngx_http_userid_log_uid_set(ngx_http_request_t *r, u_char *buf,
52 ngx_http_log_op_t *op);
53
54 static ngx_int_t ngx_http_userid_add_log_formats(ngx_conf_t *cf);
55 static ngx_int_t ngx_http_userid_init(ngx_cycle_t *cycle);
56 static void *ngx_http_userid_create_conf(ngx_conf_t *cf);
57 static char *ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent,
58 void *child);
59 static char *ngx_http_userid_domain(ngx_conf_t *cf, void *post, void *data);
60 static char *ngx_http_userid_path(ngx_conf_t *cf, void *post, void *data);
61 static char *ngx_http_userid_expires(ngx_conf_t *cf, ngx_command_t *cmd,
62 void *conf);
63 static char *ngx_http_userid_p3p(ngx_conf_t *cf, void *post, void *data);
64
65
66 static uint32_t sequencer_v1 = 1;
67 static uint32_t sequencer_v2 = 0x03030302;
68
69
70 static u_char expires[] = "; expires=Thu, 31-Dec-37 23:55:55 GMT";
71
72
73 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
74
75
76 static ngx_conf_enum_t ngx_http_userid_state[] = {
77 { ngx_string("off"), NGX_HTTP_USERID_OFF },
78 { ngx_string("log"), NGX_HTTP_USERID_LOG },
79 { ngx_string("v1"), NGX_HTTP_USERID_V1 },
80 { ngx_string("on"), NGX_HTTP_USERID_ON },
81 { ngx_null_string, 0 }
82 };
83
84
85 static ngx_conf_post_handler_pt ngx_http_userid_domain_p =
86 ngx_http_userid_domain;
87
88 static ngx_conf_post_handler_pt ngx_http_userid_path_p = ngx_http_userid_path;
89 static ngx_conf_post_handler_pt ngx_http_userid_p3p_p = ngx_http_userid_p3p;
90
91
92 static ngx_command_t ngx_http_userid_commands[] = {
93
94 { ngx_string("userid"),
95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
96 ngx_conf_set_enum_slot,
97 NGX_HTTP_LOC_CONF_OFFSET,
98 offsetof(ngx_http_userid_conf_t, enable),
99 ngx_http_userid_state },
100
101 { ngx_string("userid_service"),
102 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
103 ngx_conf_set_num_slot,
104 NGX_HTTP_LOC_CONF_OFFSET,
105 offsetof(ngx_http_userid_conf_t, service),
106 NULL },
107
108 { ngx_string("userid_name"),
109 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
110 ngx_conf_set_str_slot,
111 NGX_HTTP_LOC_CONF_OFFSET,
112 offsetof(ngx_http_userid_conf_t, name),
113 NULL },
114
115 { ngx_string("userid_domain"),
116 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
117 ngx_conf_set_str_slot,
118 NGX_HTTP_LOC_CONF_OFFSET,
119 offsetof(ngx_http_userid_conf_t, domain),
120 &ngx_http_userid_domain_p },
121
122 { ngx_string("userid_path"),
123 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
124 ngx_conf_set_str_slot,
125 NGX_HTTP_LOC_CONF_OFFSET,
126 offsetof(ngx_http_userid_conf_t, path),
127 &ngx_http_userid_path_p },
128
129 { ngx_string("userid_expires"),
130 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
131 ngx_http_userid_expires,
132 NGX_HTTP_LOC_CONF_OFFSET,
133 0,
134 NULL },
135
136 { ngx_string("userid_p3p"),
137 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
138 ngx_conf_set_str_slot,
139 NGX_HTTP_LOC_CONF_OFFSET,
140 offsetof(ngx_http_userid_conf_t, p3p),
141 &ngx_http_userid_p3p_p },
142
143 ngx_null_command
144 };
145
146
147 ngx_http_module_t ngx_http_userid_filter_module_ctx = {
148 ngx_http_userid_add_log_formats, /* pre conf */
149
150 NULL, /* create main configuration */
151 NULL, /* init main configuration */
152
153 NULL, /* create server configuration */
154 NULL, /* merge server configuration */
155
156 ngx_http_userid_create_conf, /* create location configration */
157 ngx_http_userid_merge_conf /* merge location configration */
158 };
159
160
161 ngx_module_t ngx_http_userid_filter_module = {
162 NGX_MODULE,
163 &ngx_http_userid_filter_module_ctx, /* module context */
164 ngx_http_userid_commands, /* module directives */
165 NGX_HTTP_MODULE, /* module type */
166 ngx_http_userid_init, /* init module */
167 NULL /* init process */
168 };
169
170
171 static ngx_http_log_op_name_t ngx_http_userid_log_fmt_ops[] = {
172 { ngx_string("uid_got"), 0, NULL,
173 ngx_http_userid_log_uid_got_getlen,
174 ngx_http_userid_log_uid_got },
175 { ngx_string("uid_set"), 0, NULL,
176 ngx_http_userid_log_uid_set_getlen,
177 ngx_http_userid_log_uid_set },
178 { ngx_null_string, 0, NULL, NULL, NULL }
179 };
180
181
182 static ngx_int_t
183 ngx_http_userid_filter(ngx_http_request_t *r)
184 {
185 ngx_int_t rc;
186 ngx_http_userid_ctx_t *ctx;
187 ngx_http_userid_conf_t *conf;
188
189 conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
190
191 if (conf->enable == NGX_HTTP_USERID_OFF) {
192 return ngx_http_next_header_filter(r);
193 }
194
195
196 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_userid_ctx_t));
197 if (ctx == NULL) {
198 return NGX_ERROR;
199 }
200
201 ngx_http_set_ctx(r, ctx, ngx_http_userid_filter_module);
202
203
204 rc = ngx_http_userid_get_uid(r, ctx, conf);
205
206 if (rc != NGX_OK) {
207 return rc;
208 }
209
210 if (conf->enable == NGX_HTTP_USERID_LOG || ctx->uid_got[3] != 0) {
211 return ngx_http_next_header_filter(r);
212 }
213
214 rc = ngx_http_userid_set_uid(r, ctx, conf);
215
216 if (rc != NGX_OK) {
217 return rc;
218 }
219
220 return ngx_http_next_header_filter(r);
221 }
222
223
224 static ngx_int_t
225 ngx_http_userid_get_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx,
226 ngx_http_userid_conf_t *conf)
227 {
228 u_char *start, *last, *end;
229 ngx_uint_t i;
230 ngx_str_t src, dst;
231 ngx_table_elt_t **cookies;
232
233 cookies = r->headers_in.cookies.elts;
234
235 for (i = 0; i < r->headers_in.cookies.nelts; i++) {
236 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
237 "cookie: \"%V\"", &cookies[i]->value);
238
239 if (conf->name.len >= cookies[i]->value.len) {
240 continue;
241 }
242
243 start = cookies[i]->value.data;
244 end = cookies[i]->value.data + cookies[i]->value.len;
245
246 while (start < end) {
247
248 if (ngx_strncmp(start, conf->name.data, conf->name.len) != 0) {
249
250 while (start < end && *start++ != ';') { /* void */ }
251 while (start < end && *start == ' ') { start++; }
252
253 continue;
254 }
255
256 start += conf->name.len;
257
258 while (start < end && *start == ' ') { start++; }
259
260 if (start == end || *start++ != '=') {
261 /* the invalid "Cookie" header */
262 break;
263 }
264
265 while (start < end && *start == ' ') { start++; }
266
267 last = start;
268
269 while (last < end && *last++ != ';') { /* void */ }
270
271 if (last - start < 22) {
272 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
273 "client sent too short userid cookie \"%V\"",
274 &cookies[i]->value);
275 break;
276 }
277
278 /*
279 * we have to limit encoded string to 22 characters
280 * because there are already the millions cookies with a garbage
281 * instead of the correct base64 trail "=="
282 */
283
284 src.len = 22;
285 src.data = start;
286 dst.data = (u_char *) ctx->uid_got;
287
288 if (ngx_decode_base64(&dst, &src) == NGX_ERROR) {
289 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
290 "client sent invalid userid cookie \"%V\"",
291 &cookies[i]->value);
292 break;
293 }
294
295 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
296 "uid: %08XD%08XD%08XD%08XD",
297 ctx->uid_got[0], ctx->uid_got[1],
298 ctx->uid_got[2], ctx->uid_got[3]);
299
300 return NGX_OK;
301 }
302 }
303
304 return NGX_OK;
305 }
306
307
308 static ngx_int_t
309 ngx_http_userid_set_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx,
310 ngx_http_userid_conf_t *conf)
311 {
312 u_char *cookie, *p;
313 size_t len;
314 socklen_t slen;
315 struct sockaddr_in sin;
316 ngx_str_t src, dst;
317 ngx_table_elt_t *set_cookie, *p3p;
318
319 /* TODO: mutex for sequencers */
320
321 if (conf->enable == NGX_HTTP_USERID_V1) {
322 if (conf->service == NGX_CONF_UNSET) {
323 ctx->uid_set[0] = 0;
324 } else {
325 ctx->uid_set[0] = htonl(conf->service);
326 }
327
328 ctx->uid_set[1] = ngx_time();
329 ctx->uid_set[2] = ngx_pid;
330 ctx->uid_set[3] = sequencer_v1;
331 sequencer_v1 += 0x100;
332
333 } else {
334 if (conf->service == NGX_CONF_UNSET) {
335 if (r->in_addr == 0) {
336 slen = sizeof(struct sockaddr_in);
337 if (getsockname(r->connection->fd,
338 (struct sockaddr *) &sin, &slen) == -1)
339 {
340 ngx_log_error(NGX_LOG_CRIT, r->connection->log,
341 ngx_socket_errno, "getsockname() failed");
342 }
343
344 r->in_addr = sin.sin_addr.s_addr;
345 }
346
347 ctx->uid_set[0] = htonl(r->in_addr);
348
349 } else {
350 ctx->uid_set[0] = htonl(conf->service);
351 }
352
353 ctx->uid_set[1] = htonl(ngx_time());
354 ctx->uid_set[2] = htonl(ngx_pid);
355 ctx->uid_set[3] = htonl(sequencer_v2);
356 sequencer_v2 += 0x100;
357 if (sequencer_v2 < 0x03030302) {
358 sequencer_v2 = 0x03030302;
359 }
360 }
361
362 len = conf->name.len + 1 + ngx_base64_encoded_length(16) + conf->path.len;
363
364 if (conf->expires) {
365 len += sizeof(expires) - 1 + 2;
366 }
367
368 if (conf->domain.len) {
369 len += conf->domain.len;
370 }
371
372 cookie = ngx_palloc(r->pool, len);
373 if (cookie == NULL) {
374 return NGX_ERROR;
375 }
376
377 p = ngx_cpymem(cookie, conf->name.data, conf->name.len);
378 *p++ = '=';
379
380 src.len = 16;
381 src.data = (u_char *) ctx->uid_set;
382 dst.data = p;
383
384 ngx_encode_base64(&dst, &src);
385
386 p += dst.len;
387
388 if (conf->expires == NGX_HTTP_USERID_MAX_EXPIRES) {
389 p = ngx_cpymem(p, expires, sizeof(expires) - 1);
390
391 } else if (conf->expires) {
392 p = ngx_cpymem(p, expires, sizeof("; expires=") - 1);
393 p = ngx_http_cookie_time(p, ngx_time() + conf->expires);
394 }
395
396 if (conf->domain.len) {
397 p = ngx_cpymem(p, conf->domain.data, conf->domain.len);
398 }
399
400 p = ngx_cpymem(p, conf->path.data, conf->path.len);
401
402 set_cookie = ngx_list_push(&r->headers_out.headers);
403 if (set_cookie == NULL) {
404 return NGX_ERROR;
405 }
406
407 set_cookie->key.len = sizeof("Set-Cookie") - 1;
408 set_cookie->key.data = (u_char *) "Set-Cookie";
409 set_cookie->value.len = p - cookie;
410 set_cookie->value.data = cookie;
411
412 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
413 "uid cookie: \"%V\"", &set_cookie->value);
414
415 if (conf->p3p.len == 0) {
416 return NGX_OK;
417 }
418
419 p3p = ngx_list_push(&r->headers_out.headers);
420 if (p3p == NULL) {
421 return NGX_ERROR;
422 }
423
424 p3p->key.len = sizeof("P3P") - 1;
425 p3p->key.data = (u_char *) "P3P";
426 p3p->value = conf->p3p;
427
428 return NGX_OK;
429 }
430
431
432 static size_t
433 ngx_http_userid_log_uid_got_getlen(ngx_http_request_t *r, uintptr_t data)
434 {
435 ngx_http_userid_ctx_t *ctx;
436 ngx_http_userid_conf_t *conf;
437
438 ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module);
439
440 if (ctx == NULL || ctx->uid_got[3] == 0) {
441 return 1;
442 }
443
444 conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
445
446 return conf->name.len + 1 + 32;
447 }
448
449
450 static u_char *
451 ngx_http_userid_log_uid_got(ngx_http_request_t *r, u_char *buf,
452 ngx_http_log_op_t *op)
453 {
454 ngx_http_userid_ctx_t *ctx;
455 ngx_http_userid_conf_t *conf;
456
457 ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module);
458
459 if (ctx == NULL || ctx->uid_got[3] == 0) {
460 *buf = '-';
461 return buf + 1;
462 }
463
464 conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
465
466 buf = ngx_cpymem(buf, conf->name.data, conf->name.len);
467
468 *buf++ = '=';
469
470 return ngx_sprintf(buf, "%08XD%08XD%08XD%08XD",
471 ctx->uid_got[0], ctx->uid_got[1],
472 ctx->uid_got[2], ctx->uid_got[3]);
473 }
474
475
476 static size_t
477 ngx_http_userid_log_uid_set_getlen(ngx_http_request_t *r, uintptr_t data)
478 {
479 ngx_http_userid_ctx_t *ctx;
480 ngx_http_userid_conf_t *conf;
481
482 ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module);
483
484 if (ctx == NULL || ctx->uid_set[3] == 0) {
485 return 1;
486 }
487
488 conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
489
490 return conf->name.len + 1 + 32;
491 }
492
493
494 static u_char *
495 ngx_http_userid_log_uid_set(ngx_http_request_t *r, u_char *buf,
496 ngx_http_log_op_t *op)
497 {
498 ngx_http_userid_ctx_t *ctx;
499 ngx_http_userid_conf_t *conf;
500
501 ctx = ngx_http_get_module_ctx(r, ngx_http_userid_filter_module);
502
503 if (ctx == NULL || ctx->uid_set[3] == 0) {
504 *buf = '-';
505 return buf + 1;
506 }
507
508 conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_filter_module);
509
510 buf = ngx_cpymem(buf, conf->name.data, conf->name.len);
511
512 *buf++ = '=';
513
514 return ngx_sprintf(buf, "%08XD%08XD%08XD%08XD",
515 ctx->uid_set[0], ctx->uid_set[1],
516 ctx->uid_set[2], ctx->uid_set[3]);
517 }
518
519
520 static ngx_int_t
521 ngx_http_userid_add_log_formats(ngx_conf_t *cf)
522 {
523 ngx_http_log_op_name_t *op;
524
525 for (op = ngx_http_userid_log_fmt_ops; op->name.len; op++) { /* void */ }
526 op->run = NULL;
527
528 for (op = ngx_http_log_fmt_ops; op->run; op++) {
529 if (op->name.len == 0) {
530 op = (ngx_http_log_op_name_t *) op->run;
531 }
532 }
533
534 op->run = (ngx_http_log_op_run_pt) ngx_http_userid_log_fmt_ops;
535
536 return NGX_OK;
537 }
538
539
540 static ngx_int_t
541 ngx_http_userid_init(ngx_cycle_t *cycle)
542 {
543 ngx_http_next_header_filter = ngx_http_top_header_filter;
544 ngx_http_top_header_filter = ngx_http_userid_filter;
545
546 return NGX_OK;
547 }
548
549
550 static void *
551 ngx_http_userid_create_conf(ngx_conf_t *cf)
552 {
553 ngx_http_userid_conf_t *conf;
554
555 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_userid_conf_t));
556 if (conf == NULL) {
557 return NGX_CONF_ERROR;
558 }
559
560 /*
561 * set by ngx_pcalloc():
562 *
563 * conf->name.len = 0;
564 * conf->name.date = NULL;
565 * conf->domain.len = 0;
566 * conf->domain.date = NULL;
567 * conf->path.len = 0;
568 * conf->path.date = NULL;
569 * conf->p3p.len = 0;
570 * conf->p3p.date = NULL;
571 */
572
573 conf->enable = NGX_CONF_UNSET;
574 conf->service = NGX_CONF_UNSET;
575 conf->expires = NGX_CONF_UNSET;
576
577 return conf;
578 }
579
580
581 static char *
582 ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent, void *child)
583 {
584 ngx_http_userid_conf_t *prev = parent;
585 ngx_http_userid_conf_t *conf = child;
586
587 ngx_conf_merge_value(conf->enable, prev->enable, NGX_HTTP_USERID_OFF);
588
589 ngx_conf_merge_str_value(conf->name, prev->name, "uid");
590 ngx_conf_merge_str_value(conf->domain, prev->domain, "");
591 ngx_conf_merge_str_value(conf->path, prev->path, "; path=/");
592 ngx_conf_merge_str_value(conf->p3p, prev->p3p, "");
593
594 ngx_conf_merge_value(conf->service, prev->service, NGX_CONF_UNSET);
595 ngx_conf_merge_sec_value(conf->expires, prev->expires, 0);
596
597 return NGX_CONF_OK;
598 }
599
600
601 static char *
602 ngx_http_userid_domain(ngx_conf_t *cf, void *post, void *data)
603 {
604 ngx_str_t *domain = data;
605
606 u_char *p, *new;
607
608 if (domain->len == 4 && ngx_strcmp(domain->data, "none") == 0) {
609 domain->len = 0;
610 domain->data = (u_char *) "";
611
612 return NGX_CONF_OK;
613 }
614
615 new = ngx_palloc(cf->pool, sizeof("; domain=") - 1 + domain->len);
616 if (new == NULL) {
617 return NGX_CONF_ERROR;
618 }
619
620 p = ngx_cpymem(new, "; domain=", sizeof("; domain=") - 1);
621 ngx_memcpy(p, domain->data, domain->len);
622
623 domain->len += sizeof("; domain=") - 1;
624 domain->data = new;
625
626 return NGX_CONF_OK;
627 }
628
629
630 static char *
631 ngx_http_userid_path(ngx_conf_t *cf, void *post, void *data)
632 {
633 ngx_str_t *path = data;
634
635 u_char *p, *new;
636
637 new = ngx_palloc(cf->pool, sizeof("; path=") - 1 + path->len);
638 if (new == NULL) {
639 return NGX_CONF_ERROR;
640 }
641
642 p = ngx_cpymem(new, "; path=", sizeof("; path=") - 1);
643 ngx_memcpy(p, path->data, path->len);
644
645 path->len += sizeof("; path=") - 1;
646 path->data = new;
647
648 return NGX_CONF_OK;
649 }
650
651
652 static char *
653 ngx_http_userid_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
654 {
655 ngx_http_userid_conf_t *ucf = conf;
656
657 ngx_str_t *value;
658
659 if (ucf->expires != NGX_CONF_UNSET) {
660 return "is duplicate";
661 }
662
663 value = cf->args->elts;
664
665 if (ngx_strcmp(value[1].data, "max") == 0) {
666 ucf->expires = NGX_HTTP_USERID_MAX_EXPIRES;
667 return NGX_CONF_OK;
668 }
669
670 if (ngx_strcmp(value[1].data, "off") == 0) {
671 ucf->expires = 0;
672 return NGX_CONF_OK;
673 }
674
675 ucf->expires = ngx_parse_time(&value[1], 1);
676 if (ucf->expires == NGX_ERROR) {
677 return "invalid value";
678 }
679
680 if (ucf->expires == NGX_PARSE_LARGE_TIME) {
681 return "value must be less than 68 years";
682 }
683
684 return NGX_CONF_OK;
685 }
686
687
688 static char *
689 ngx_http_userid_p3p(ngx_conf_t *cf, void *post, void *data)
690 {
691 ngx_str_t *p3p = data;
692
693 if (p3p->len == 4 && ngx_strcmp(p3p->data, "none") == 0) {
694 p3p->len = 0;
695 p3p->data = (u_char *) "";
696 }
697
698 return NGX_CONF_OK;
699 }