|
499
|
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
|
|
|
12
|
|
573
|
13 static ngx_int_t ngx_http_variable_request(ngx_http_request_t *r,
|
|
|
14 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
15 static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r,
|
|
|
16 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
17 static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r,
|
|
|
18 ngx_http_variable_value_t *v, uintptr_t data);
|
|
577
|
19
|
|
|
20 static ngx_int_t ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
|
|
573
|
21 ngx_http_variable_value_t *v, uintptr_t data);
|
|
577
|
22 static ngx_int_t ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
|
|
|
23 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
24 static ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v,
|
|
|
25 ngx_str_t *var, ngx_list_part_t *part, size_t prefix);
|
|
|
26
|
|
573
|
27 static ngx_int_t ngx_http_variable_host(ngx_http_request_t *r,
|
|
|
28 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
29 static ngx_int_t ngx_http_variable_remote_addr(ngx_http_request_t *r,
|
|
|
30 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
31 static ngx_int_t ngx_http_variable_remote_port(ngx_http_request_t *r,
|
|
|
32 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
33 static ngx_int_t ngx_http_variable_server_addr(ngx_http_request_t *r,
|
|
|
34 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
35 static ngx_int_t ngx_http_variable_server_port(ngx_http_request_t *r,
|
|
|
36 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
37 static ngx_int_t ngx_http_variable_document_root(ngx_http_request_t *r,
|
|
|
38 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
39 static ngx_int_t ngx_http_variable_request_filename(ngx_http_request_t *r,
|
|
|
40 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
41 static ngx_int_t ngx_http_variable_request_method(ngx_http_request_t *r,
|
|
|
42 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
43 static ngx_int_t ngx_http_variable_remote_user(ngx_http_request_t *r,
|
|
|
44 ngx_http_variable_value_t *v, uintptr_t data);
|
|
499
|
45
|
|
|
46
|
|
509
|
47 /*
|
|
|
48 * TODO:
|
|
|
49 * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
|
|
|
50 * REMOTE_HOST (null), REMOTE_IDENT (null),
|
|
|
51 * SERVER_SOFTWARE
|
|
|
52 *
|
|
571
|
53 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
|
|
509
|
54 */
|
|
499
|
55
|
|
509
|
56 static ngx_http_variable_t ngx_http_core_variables[] = {
|
|
|
57
|
|
|
58 { ngx_string("http_host"), ngx_http_variable_header,
|
|
533
|
59 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
|
|
499
|
60
|
|
509
|
61 { ngx_string("http_user_agent"), ngx_http_variable_header,
|
|
533
|
62 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
|
|
509
|
63
|
|
|
64 { ngx_string("http_referer"), ngx_http_variable_header,
|
|
533
|
65 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
|
|
499
|
66
|
|
|
67 #if (NGX_HTTP_GZIP)
|
|
509
|
68 { ngx_string("http_via"), ngx_http_variable_header,
|
|
533
|
69 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
|
|
499
|
70 #endif
|
|
|
71
|
|
|
72 #if (NGX_HTTP_PROXY)
|
|
509
|
73 { ngx_string("http_x_forwarded_for"), ngx_http_variable_header,
|
|
533
|
74 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
|
|
499
|
75 #endif
|
|
|
76
|
|
515
|
77 { ngx_string("http_cookie"), ngx_http_variable_headers,
|
|
533
|
78 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
|
|
515
|
79
|
|
509
|
80 { ngx_string("content_length"), ngx_http_variable_header,
|
|
533
|
81 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
|
|
509
|
82
|
|
|
83 { ngx_string("content_type"), ngx_http_variable_header,
|
|
533
|
84 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
|
|
509
|
85
|
|
533
|
86 { ngx_string("host"), ngx_http_variable_host, 0, 0, 0 },
|
|
509
|
87
|
|
533
|
88 { ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0, 0 },
|
|
499
|
89
|
|
533
|
90 { ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0, 0 },
|
|
509
|
91
|
|
533
|
92 { ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0, 0 },
|
|
509
|
93
|
|
533
|
94 { ngx_string("server_port"), ngx_http_variable_server_port, 0, 0, 0 },
|
|
509
|
95
|
|
|
96 { ngx_string("server_protocol"), ngx_http_variable_request,
|
|
533
|
97 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
|
|
509
|
98
|
|
|
99 { ngx_string("request_uri"), ngx_http_variable_request,
|
|
533
|
100 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
|
|
499
|
101
|
|
573
|
102 { ngx_string("uri"), ngx_http_variable_request,
|
|
|
103 offsetof(ngx_http_request_t, uri),
|
|
|
104 NGX_HTTP_VAR_NOCACHABLE, 0 },
|
|
|
105
|
|
509
|
106 { ngx_string("document_uri"), ngx_http_variable_request,
|
|
573
|
107 offsetof(ngx_http_request_t, uri),
|
|
|
108 NGX_HTTP_VAR_NOCACHABLE, 0 },
|
|
509
|
109
|
|
569
|
110 { ngx_string("request"), ngx_http_variable_request,
|
|
|
111 offsetof(ngx_http_request_t, request_line), 0, 0 },
|
|
|
112
|
|
533
|
113 { ngx_string("document_root"), ngx_http_variable_document_root, 0, 0, 0 },
|
|
509
|
114
|
|
|
115 { ngx_string("query_string"), ngx_http_variable_request,
|
|
|
116 offsetof(ngx_http_request_t, args),
|
|
533
|
117 NGX_HTTP_VAR_NOCACHABLE, 0 },
|
|
499
|
118
|
|
509
|
119 { ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
|
|
533
|
120 NGX_HTTP_VAR_NOCACHABLE, 0 },
|
|
509
|
121
|
|
|
122 { ngx_string("server_name"), ngx_http_variable_request,
|
|
533
|
123 offsetof(ngx_http_request_t, server_name), 0, 0 },
|
|
509
|
124
|
|
561
|
125 { ngx_string("request_method"), ngx_http_variable_request_method, 0, 0, 0 },
|
|
509
|
126
|
|
539
|
127 { ngx_string("remote_user"), ngx_http_variable_remote_user, 0, 0, 0 },
|
|
509
|
128
|
|
533
|
129 { ngx_null_string, NULL, 0, 0, 0 }
|
|
499
|
130 };
|
|
|
131
|
|
|
132
|
|
577
|
133 ngx_http_variable_value_t ngx_http_variable_null_value =
|
|
|
134 ngx_http_variable("");
|
|
|
135 ngx_http_variable_value_t ngx_http_variable_true_value =
|
|
|
136 ngx_http_variable("1");
|
|
|
137
|
|
|
138
|
|
499
|
139 ngx_http_variable_t *
|
|
509
|
140 ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
|
|
|
141 {
|
|
|
142 ngx_uint_t i;
|
|
|
143 ngx_http_variable_t *v;
|
|
|
144 ngx_http_core_main_conf_t *cmcf;
|
|
|
145
|
|
|
146 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
147
|
|
|
148 v = cmcf->all_variables.elts;
|
|
|
149 for (i = 0; i < cmcf->all_variables.nelts; i++) {
|
|
|
150 if (name->len != v[i].name.len
|
|
|
151 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
|
|
|
152 {
|
|
|
153 continue;
|
|
|
154 }
|
|
|
155
|
|
|
156 if (!(v[i].flags & NGX_HTTP_VAR_CHANGABLE)) {
|
|
|
157 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
158 "the duplicate \"%V\" variable", name);
|
|
|
159 return NULL;
|
|
|
160 }
|
|
|
161
|
|
|
162 return &v[i];
|
|
|
163 }
|
|
|
164
|
|
|
165 v = ngx_array_push(&cmcf->all_variables);
|
|
|
166 if (v == NULL) {
|
|
|
167 return NULL;
|
|
|
168 }
|
|
|
169
|
|
|
170 v->name.len = name->len;
|
|
|
171 v->name.data = ngx_palloc(cf->pool, name->len);
|
|
|
172 if (v->name.data == NULL) {
|
|
|
173 return NULL;
|
|
|
174 }
|
|
|
175
|
|
|
176 for (i = 0; i < name->len; i++) {
|
|
|
177 v->name.data[i] = ngx_tolower(name->data[i]);
|
|
|
178 }
|
|
|
179
|
|
|
180 v->handler = NULL;
|
|
|
181 v->data = 0;
|
|
|
182 v->flags = flags;
|
|
533
|
183 v->index = 0;
|
|
509
|
184
|
|
|
185 return v;
|
|
|
186 }
|
|
|
187
|
|
|
188
|
|
|
189 ngx_int_t
|
|
|
190 ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
|
|
499
|
191 {
|
|
501
|
192 ngx_uint_t i;
|
|
|
193 ngx_http_variable_t *v;
|
|
499
|
194 ngx_http_core_main_conf_t *cmcf;
|
|
|
195
|
|
|
196 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
197
|
|
501
|
198 v = cmcf->variables.elts;
|
|
|
199
|
|
|
200 if (v == NULL) {
|
|
499
|
201 if (ngx_array_init(&cmcf->variables, cf->pool, 4,
|
|
|
202 sizeof(ngx_http_variable_t)) == NGX_ERROR)
|
|
|
203 {
|
|
509
|
204 return NGX_ERROR;
|
|
499
|
205 }
|
|
501
|
206
|
|
|
207 } else {
|
|
|
208 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
209 if (name->len != v[i].name.len
|
|
|
210 || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
|
|
|
211 {
|
|
|
212 continue;
|
|
|
213 }
|
|
|
214
|
|
509
|
215 return i;
|
|
501
|
216 }
|
|
499
|
217 }
|
|
|
218
|
|
501
|
219 v = ngx_array_push(&cmcf->variables);
|
|
|
220 if (v == NULL) {
|
|
509
|
221 return NGX_ERROR;
|
|
499
|
222 }
|
|
|
223
|
|
501
|
224 v->name.len = name->len;
|
|
|
225 v->name.data = ngx_palloc(cf->pool, name->len);
|
|
|
226 if (v->name.data == NULL) {
|
|
509
|
227 return NGX_ERROR;
|
|
501
|
228 }
|
|
499
|
229
|
|
501
|
230 for (i = 0; i < name->len; i++) {
|
|
509
|
231 v->name.data[i] = ngx_tolower(name->data[i]);
|
|
501
|
232 }
|
|
|
233
|
|
|
234 v->handler = NULL;
|
|
|
235 v->data = 0;
|
|
509
|
236 v->flags = 0;
|
|
533
|
237 v->index = cmcf->variables.nelts - 1;
|
|
501
|
238
|
|
509
|
239 return cmcf->variables.nelts - 1;
|
|
499
|
240 }
|
|
|
241
|
|
|
242
|
|
|
243 ngx_http_variable_value_t *
|
|
|
244 ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
|
|
|
245 {
|
|
501
|
246 ngx_http_variable_t *v;
|
|
499
|
247 ngx_http_core_main_conf_t *cmcf;
|
|
|
248
|
|
|
249 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
250
|
|
553
|
251 if (cmcf->variables.nelts <= index) {
|
|
499
|
252 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
253 "unknown variable index: %d", index);
|
|
|
254 return NULL;
|
|
|
255 }
|
|
|
256
|
|
573
|
257 if (r->variables[index].not_found || r->variables[index].valid) {
|
|
|
258 return &r->variables[index];
|
|
501
|
259 }
|
|
499
|
260
|
|
501
|
261 v = cmcf->variables.elts;
|
|
499
|
262
|
|
573
|
263 if (v[index].handler(r, &r->variables[index], v[index].data) == NGX_OK) {
|
|
499
|
264
|
|
573
|
265 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) {
|
|
|
266 r->variables[index].no_cachable = 1;
|
|
499
|
267 }
|
|
573
|
268
|
|
|
269 return &r->variables[index];
|
|
499
|
270 }
|
|
|
271
|
|
573
|
272 return NULL;
|
|
|
273 }
|
|
|
274
|
|
|
275
|
|
|
276 ngx_http_variable_value_t *
|
|
|
277 ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index)
|
|
|
278 {
|
|
|
279 ngx_http_variable_value_t *v;
|
|
|
280
|
|
|
281 v = &r->variables[index];
|
|
|
282
|
|
|
283 if (v->valid) {
|
|
|
284 if (!v->no_cachable) {
|
|
|
285 return v;
|
|
|
286 }
|
|
|
287
|
|
|
288 v->valid = 0;
|
|
|
289 v->not_found = 0;
|
|
509
|
290 }
|
|
501
|
291
|
|
573
|
292 return ngx_http_get_indexed_variable(r, index);
|
|
499
|
293 }
|
|
|
294
|
|
|
295
|
|
|
296 ngx_http_variable_value_t *
|
|
|
297 ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name)
|
|
|
298 {
|
|
|
299 ngx_uint_t i, key;
|
|
501
|
300 ngx_http_variable_t *v;
|
|
573
|
301 ngx_http_variable_value_t *vv;
|
|
499
|
302 ngx_http_core_main_conf_t *cmcf;
|
|
|
303
|
|
|
304 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
305
|
|
509
|
306 key = 0;
|
|
|
307 for (i = 0; i < name->len; i++) {
|
|
|
308 key += name->data[i];
|
|
499
|
309 }
|
|
|
310
|
|
509
|
311 key %= cmcf->variables_hash.hash_size;
|
|
|
312 v = (ngx_http_variable_t *) cmcf->variables_hash.buckets;
|
|
499
|
313
|
|
509
|
314 if (v[key].name.len == name->len
|
|
|
315 && ngx_strncmp(v[key].name.data, name->data, name->len) == 0)
|
|
|
316 {
|
|
519
|
317 if (v[key].flags & NGX_HTTP_VAR_INDEXED) {
|
|
533
|
318 return ngx_http_get_indexed_variable(r, v[key].index);
|
|
519
|
319
|
|
|
320 } else {
|
|
499
|
321
|
|
573
|
322 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
501
|
323
|
|
573
|
324 if (vv && v[key].handler(r, vv, v[key].data) == NGX_OK) {
|
|
|
325 return vv;
|
|
|
326 }
|
|
509
|
327
|
|
573
|
328 return NULL;
|
|
|
329 }
|
|
509
|
330 }
|
|
|
331
|
|
|
332 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
|
333 if (vv == NULL) {
|
|
|
334 return NULL;
|
|
|
335 }
|
|
|
336
|
|
573
|
337 if (ngx_strncmp(name->data, "http_", 5) == 0) {
|
|
499
|
338
|
|
577
|
339 if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name)
|
|
|
340 == NGX_OK)
|
|
|
341 {
|
|
|
342 return vv;
|
|
|
343 }
|
|
|
344
|
|
|
345 return NULL;
|
|
|
346 }
|
|
|
347
|
|
|
348 if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {
|
|
|
349
|
|
|
350 if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)
|
|
|
351 == NGX_OK)
|
|
573
|
352 {
|
|
|
353 return vv;
|
|
|
354 }
|
|
499
|
355
|
|
|
356 return NULL;
|
|
|
357 }
|
|
|
358
|
|
573
|
359 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
360 "unknown \"%V\" variable", name);
|
|
|
361
|
|
|
362 vv->not_found = 1;
|
|
499
|
363
|
|
501
|
364 return vv;
|
|
499
|
365 }
|
|
|
366
|
|
|
367
|
|
573
|
368 static ngx_int_t
|
|
|
369 ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
370 uintptr_t data)
|
|
|
371 {
|
|
|
372 ngx_str_t *s;
|
|
|
373
|
|
|
374 s = (ngx_str_t *) ((char *) r + data);
|
|
|
375
|
|
|
376 if (s->data) {
|
|
|
377 v->len = s->len;
|
|
|
378 v->valid = 1;
|
|
|
379 v->no_cachable = 0;
|
|
|
380 v->not_found = 0;
|
|
|
381 v->data = s->data;
|
|
|
382
|
|
|
383 } else {
|
|
|
384 v->not_found = 1;
|
|
|
385 }
|
|
|
386
|
|
|
387 return NGX_OK;
|
|
|
388 }
|
|
|
389
|
|
|
390
|
|
|
391 static ngx_int_t
|
|
|
392 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
393 uintptr_t data)
|
|
515
|
394 {
|
|
573
|
395 ngx_table_elt_t *h;
|
|
|
396
|
|
|
397 h = *(ngx_table_elt_t **) ((char *) r + data);
|
|
|
398
|
|
|
399 if (h) {
|
|
|
400 v->len = h->value.len;
|
|
|
401 v->valid = 1;
|
|
|
402 v->no_cachable = 0;
|
|
|
403 v->not_found = 0;
|
|
|
404 v->data = h->value.data;
|
|
|
405
|
|
|
406 } else {
|
|
|
407 v->not_found = 1;
|
|
|
408 }
|
|
|
409
|
|
|
410 return NGX_OK;
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 static ngx_int_t
|
|
|
415 ngx_http_variable_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
416 uintptr_t data)
|
|
|
417 {
|
|
|
418 size_t len;
|
|
|
419 u_char *p;
|
|
|
420 ngx_uint_t i;
|
|
|
421 ngx_array_t *a;
|
|
|
422 ngx_table_elt_t **h;
|
|
515
|
423
|
|
|
424 a = (ngx_array_t *) ((char *) r + data);
|
|
|
425
|
|
|
426 if (a->nelts == 0) {
|
|
573
|
427 v->not_found = 1;
|
|
|
428 return NGX_OK;
|
|
515
|
429 }
|
|
|
430
|
|
573
|
431 v->valid = 1;
|
|
|
432 v->no_cachable = 0;
|
|
|
433 v->not_found = 0;
|
|
515
|
434
|
|
|
435 h = a->elts;
|
|
|
436
|
|
|
437 if (a->nelts == 1) {
|
|
573
|
438 v->len = (*h)->value.len;
|
|
|
439 v->data = (*h)->value.data;
|
|
515
|
440
|
|
573
|
441 return NGX_OK;
|
|
515
|
442 }
|
|
|
443
|
|
573
|
444 len = (size_t) - (ssize_t) (sizeof("; ") - 1);
|
|
|
445
|
|
|
446 for (i = 0; i < a->nelts; i++) {
|
|
|
447 len += h[i]->value.len + sizeof("; ") - 1;
|
|
515
|
448 }
|
|
|
449
|
|
573
|
450 p = ngx_palloc(r->pool, len);
|
|
|
451 if (p == NULL) {
|
|
|
452 return NGX_ERROR;
|
|
|
453 }
|
|
|
454
|
|
|
455 v->len = len;
|
|
|
456 v->data = p;
|
|
515
|
457
|
|
|
458 for (i = 0; /* void */ ; i++) {
|
|
573
|
459 p = ngx_copy(p, h[i]->value.data, h[i]->value.len);
|
|
515
|
460
|
|
|
461 if (i == a->nelts - 1) {
|
|
|
462 break;
|
|
|
463 }
|
|
|
464
|
|
|
465 *p++ = ';'; *p++ = ' ';
|
|
|
466 }
|
|
|
467
|
|
573
|
468 return NGX_OK;
|
|
515
|
469 }
|
|
|
470
|
|
|
471
|
|
573
|
472 static ngx_int_t
|
|
577
|
473 ngx_http_variable_unknown_header_in(ngx_http_request_t *r,
|
|
|
474 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
475 {
|
|
|
476 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
477 &r->headers_in.headers.part,
|
|
|
478 sizeof("http_") - 1);
|
|
|
479 }
|
|
|
480
|
|
|
481
|
|
|
482 static ngx_int_t
|
|
|
483 ngx_http_variable_unknown_header_out(ngx_http_request_t *r,
|
|
573
|
484 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
485 {
|
|
577
|
486 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
487 &r->headers_out.headers.part,
|
|
|
488 sizeof("sent_http_") - 1);
|
|
|
489 }
|
|
501
|
490
|
|
577
|
491
|
|
|
492 static ngx_int_t
|
|
|
493 ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var,
|
|
|
494 ngx_list_part_t *part, size_t prefix)
|
|
|
495 {
|
|
573
|
496 u_char ch;
|
|
|
497 ngx_uint_t i, n;
|
|
|
498 ngx_table_elt_t *header;
|
|
499
|
499
|
|
|
500 header = part->elts;
|
|
|
501
|
|
|
502 for (i = 0; /* void */ ; i++) {
|
|
|
503
|
|
|
504 if (i >= part->nelts) {
|
|
|
505 if (part->next == NULL) {
|
|
|
506 break;
|
|
|
507 }
|
|
|
508
|
|
|
509 part = part->next;
|
|
|
510 header = part->elts;
|
|
|
511 i = 0;
|
|
|
512 }
|
|
|
513
|
|
577
|
514 for (n = 0; n + prefix < var->len && n < header[i].key.len; n++) {
|
|
499
|
515 ch = header[i].key.data[n];
|
|
|
516
|
|
509
|
517 if (ch >= 'A' && ch <= 'Z') {
|
|
|
518 ch |= 0x20;
|
|
499
|
519
|
|
|
520 } else if (ch == '-') {
|
|
|
521 ch = '_';
|
|
|
522 }
|
|
|
523
|
|
577
|
524 if (var->data[n + prefix] != ch) {
|
|
499
|
525 break;
|
|
|
526 }
|
|
|
527 }
|
|
|
528
|
|
577
|
529 if (n + prefix == var->len) {
|
|
573
|
530 v->len = header[i].value.len;
|
|
|
531 v->valid = 1;
|
|
|
532 v->no_cachable = 0;
|
|
|
533 v->not_found = 0;
|
|
|
534 v->data = header[i].value.data;
|
|
499
|
535
|
|
573
|
536 return NGX_OK;
|
|
499
|
537 }
|
|
|
538 }
|
|
|
539
|
|
573
|
540 v->not_found = 1;
|
|
|
541
|
|
|
542 return NGX_OK;
|
|
509
|
543 }
|
|
|
544
|
|
|
545
|
|
573
|
546 static ngx_int_t
|
|
|
547 ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
548 uintptr_t data)
|
|
509
|
549 {
|
|
573
|
550 if (r->headers_in.host) {
|
|
|
551 v->len = r->headers_in.host_name_len;
|
|
|
552 v->data = r->headers_in.host->value.data;
|
|
509
|
553
|
|
573
|
554 } else {
|
|
|
555 v->len = r->server_name.len;
|
|
|
556 v->data = r->server_name.data;
|
|
509
|
557 }
|
|
|
558
|
|
573
|
559 v->valid = 1;
|
|
|
560 v->no_cachable = 0;
|
|
|
561 v->not_found = 0;
|
|
509
|
562
|
|
573
|
563 return NGX_OK;
|
|
499
|
564 }
|
|
|
565
|
|
|
566
|
|
573
|
567 static ngx_int_t
|
|
|
568 ngx_http_variable_remote_addr(ngx_http_request_t *r,
|
|
|
569 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
570 {
|
|
573
|
571 v->len = r->connection->addr_text.len;
|
|
|
572 v->valid = 1;
|
|
|
573 v->no_cachable = 0;
|
|
|
574 v->not_found = 0;
|
|
|
575 v->data = r->connection->addr_text.data;
|
|
499
|
576
|
|
573
|
577 return NGX_OK;
|
|
499
|
578 }
|
|
|
579
|
|
|
580
|
|
573
|
581 static ngx_int_t
|
|
|
582 ngx_http_variable_remote_port(ngx_http_request_t *r,
|
|
|
583 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
584 {
|
|
573
|
585 ngx_uint_t port;
|
|
|
586 struct sockaddr_in *sin;
|
|
509
|
587
|
|
573
|
588 v->len = 0;
|
|
|
589 v->valid = 1;
|
|
|
590 v->no_cachable = 0;
|
|
|
591 v->not_found = 0;
|
|
509
|
592
|
|
573
|
593 v->data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
|
594 if (v->data == NULL) {
|
|
|
595 return NGX_ERROR;
|
|
509
|
596 }
|
|
|
597
|
|
|
598 /* AF_INET only */
|
|
577
|
599
|
|
509
|
600 if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
|
601 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
577
|
602
|
|
509
|
603 port = ntohs(sin->sin_port);
|
|
577
|
604
|
|
509
|
605 if (port > 0 && port < 65536) {
|
|
573
|
606 v->len = ngx_sprintf(v->data, "%ui", port) - v->data;
|
|
509
|
607 }
|
|
|
608 }
|
|
|
609
|
|
573
|
610 return NGX_OK;
|
|
509
|
611 }
|
|
|
612
|
|
|
613
|
|
573
|
614 static ngx_int_t
|
|
|
615 ngx_http_variable_server_addr(ngx_http_request_t *r,
|
|
|
616 ngx_http_variable_value_t *v, uintptr_t data)
|
|
509
|
617 {
|
|
573
|
618 socklen_t len;
|
|
|
619 ngx_connection_t *c;
|
|
|
620 struct sockaddr_in sin;
|
|
499
|
621
|
|
573
|
622 v->data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
|
623 if (v->data == NULL) {
|
|
|
624 return NGX_ERROR;
|
|
509
|
625 }
|
|
|
626
|
|
|
627 c = r->connection;
|
|
|
628
|
|
|
629 if (r->in_addr == 0) {
|
|
|
630 len = sizeof(struct sockaddr_in);
|
|
|
631 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
|
632 ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
|
633 ngx_socket_errno, "getsockname() failed");
|
|
573
|
634 return NGX_ERROR;
|
|
509
|
635 }
|
|
|
636
|
|
|
637 r->in_addr = sin.sin_addr.s_addr;
|
|
|
638 }
|
|
|
639
|
|
573
|
640 v->len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
|
641 v->data, INET_ADDRSTRLEN);
|
|
|
642 v->valid = 1;
|
|
|
643 v->no_cachable = 0;
|
|
|
644 v->not_found = 0;
|
|
499
|
645
|
|
573
|
646 return NGX_OK;
|
|
499
|
647 }
|
|
|
648
|
|
|
649
|
|
573
|
650 static ngx_int_t
|
|
|
651 ngx_http_variable_server_port(ngx_http_request_t *r,
|
|
|
652 ngx_http_variable_value_t *v, uintptr_t data)
|
|
509
|
653 {
|
|
573
|
654 v->len = r->port_text->len - 1;
|
|
|
655 v->valid = 1;
|
|
|
656 v->no_cachable = 0;
|
|
|
657 v->not_found = 0;
|
|
|
658 v->data = r->port_text->data + 1;
|
|
509
|
659
|
|
573
|
660 return NGX_OK;
|
|
509
|
661 }
|
|
|
662
|
|
|
663
|
|
573
|
664 static ngx_int_t
|
|
|
665 ngx_http_variable_document_root(ngx_http_request_t *r,
|
|
|
666 ngx_http_variable_value_t *v, uintptr_t data)
|
|
499
|
667 {
|
|
573
|
668 ngx_http_core_loc_conf_t *clcf;
|
|
509
|
669
|
|
|
670 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
671
|
|
573
|
672 v->len = clcf->root.len;
|
|
|
673 v->valid = 1;
|
|
|
674 v->no_cachable = 0;
|
|
|
675 v->not_found = 0;
|
|
|
676 v->data = clcf->root.data;
|
|
509
|
677
|
|
573
|
678 return NGX_OK;
|
|
509
|
679 }
|
|
|
680
|
|
|
681
|
|
573
|
682 static ngx_int_t
|
|
|
683 ngx_http_variable_request_filename(ngx_http_request_t *r,
|
|
|
684 ngx_http_variable_value_t *v, uintptr_t data)
|
|
509
|
685 {
|
|
573
|
686 ngx_str_t path;
|
|
499
|
687
|
|
573
|
688 if (ngx_http_map_uri_to_path(r, &path, 0) == NULL) {
|
|
|
689 return NGX_ERROR;
|
|
557
|
690 }
|
|
509
|
691
|
|
557
|
692 /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */
|
|
509
|
693
|
|
573
|
694 v->len = path.len - 1;
|
|
|
695 v->valid = 1;
|
|
|
696 v->no_cachable = 0;
|
|
|
697 v->not_found = 0;
|
|
|
698 v->data = path.data;
|
|
499
|
699
|
|
573
|
700 return NGX_OK;
|
|
499
|
701 }
|
|
|
702
|
|
|
703
|
|
573
|
704 static ngx_int_t
|
|
|
705 ngx_http_variable_request_method(ngx_http_request_t *r,
|
|
|
706 ngx_http_variable_value_t *v, uintptr_t data)
|
|
561
|
707 {
|
|
573
|
708 if (r->method_name.data) {
|
|
|
709 if (r->upstream && r->upstream->method.len) {
|
|
|
710 v->len = r->upstream->method.len;
|
|
|
711 v->data = r->upstream->method.data;
|
|
561
|
712
|
|
573
|
713 } else {
|
|
|
714 v->len = r->method_name.len;
|
|
|
715 v->data = r->method_name.data;
|
|
|
716 }
|
|
|
717
|
|
|
718 v->valid = 1;
|
|
|
719 v->no_cachable = 0;
|
|
|
720 v->not_found = 0;
|
|
|
721
|
|
|
722 } else {
|
|
|
723 v->not_found = 1;
|
|
561
|
724 }
|
|
|
725
|
|
573
|
726 return NGX_OK;
|
|
561
|
727 }
|
|
|
728
|
|
|
729
|
|
573
|
730 static ngx_int_t
|
|
|
731 ngx_http_variable_remote_user(ngx_http_request_t *r,
|
|
|
732 ngx_http_variable_value_t *v, uintptr_t data)
|
|
539
|
733 {
|
|
573
|
734 ngx_int_t rc;
|
|
539
|
735
|
|
|
736 rc = ngx_http_auth_basic_user(r);
|
|
|
737
|
|
|
738 if (rc == NGX_DECLINED) {
|
|
573
|
739 v->not_found = 1;
|
|
|
740 return NGX_OK;
|
|
539
|
741 }
|
|
|
742
|
|
|
743 if (rc == NGX_ERROR) {
|
|
573
|
744 return NGX_ERROR;
|
|
539
|
745 }
|
|
|
746
|
|
573
|
747 v->len = r->headers_in.user.len;
|
|
|
748 v->valid = 1;
|
|
|
749 v->no_cachable = 0;
|
|
|
750 v->not_found = 0;
|
|
|
751 v->data = r->headers_in.user.data;
|
|
571
|
752
|
|
573
|
753 return NGX_OK;
|
|
571
|
754 }
|
|
|
755
|
|
|
756
|
|
499
|
757 ngx_int_t
|
|
509
|
758 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
|
499
|
759 {
|
|
509
|
760 ngx_http_variable_t *v, *cv;
|
|
501
|
761 ngx_http_core_main_conf_t *cmcf;
|
|
499
|
762
|
|
509
|
763 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
764
|
|
|
765 if (ngx_array_init(&cmcf->all_variables, cf->pool, 32,
|
|
569
|
766 sizeof(ngx_http_variable_t))
|
|
|
767 == NGX_ERROR)
|
|
509
|
768 {
|
|
499
|
769 return NGX_ERROR;
|
|
|
770 }
|
|
|
771
|
|
501
|
772 for (cv = ngx_http_core_variables; cv->name.len; cv++) {
|
|
509
|
773 v = ngx_array_push(&cmcf->all_variables);
|
|
|
774 if (v == NULL) {
|
|
499
|
775 return NGX_ERROR;
|
|
|
776 }
|
|
|
777
|
|
509
|
778 *v = *cv;
|
|
499
|
779 }
|
|
|
780
|
|
|
781 return NGX_OK;
|
|
|
782 }
|
|
509
|
783
|
|
|
784
|
|
|
785 ngx_int_t
|
|
|
786 ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
|
787 {
|
|
|
788 ngx_uint_t i, n;
|
|
|
789 ngx_http_variable_t *v, *av;
|
|
|
790 ngx_http_core_main_conf_t *cmcf;
|
|
|
791
|
|
|
792 /* set the handlers for the indexed http variables */
|
|
|
793
|
|
|
794 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
795
|
|
|
796 v = cmcf->variables.elts;
|
|
|
797 av = cmcf->all_variables.elts;
|
|
|
798
|
|
|
799 for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
800
|
|
|
801 for (n = 0; n < cmcf->all_variables.nelts; n++) {
|
|
|
802
|
|
|
803 if (v[i].name.len == av[n].name.len
|
|
|
804 && ngx_strncmp(v[i].name.data, av[n].name.data, v[i].name.len)
|
|
|
805 == 0)
|
|
|
806 {
|
|
|
807 v[i].handler = av[n].handler;
|
|
|
808 v[i].data = av[n].data;
|
|
527
|
809
|
|
|
810 av[n].flags |= NGX_HTTP_VAR_INDEXED;
|
|
|
811 v[i].flags = av[n].flags;
|
|
509
|
812
|
|
533
|
813 av[n].index = i;
|
|
|
814
|
|
509
|
815 goto next;
|
|
|
816 }
|
|
|
817 }
|
|
|
818
|
|
|
819 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
|
577
|
820 v[i].handler = ngx_http_variable_unknown_header_in;
|
|
|
821 v[i].data = (uintptr_t) &v[i].name;
|
|
|
822
|
|
|
823 continue;
|
|
|
824 }
|
|
|
825
|
|
|
826 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) {
|
|
|
827 v[i].handler = ngx_http_variable_unknown_header_out;
|
|
509
|
828 v[i].data = (uintptr_t) &v[i].name;
|
|
|
829
|
|
|
830 continue;
|
|
|
831 }
|
|
|
832
|
|
|
833 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
834 "unknown \"%V\" variable", &v[i].name);
|
|
|
835
|
|
|
836 return NGX_ERROR;
|
|
|
837
|
|
|
838 next:
|
|
|
839 continue;
|
|
|
840 }
|
|
|
841
|
|
|
842 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
843 "http variables: %ui", cmcf->variables.nelts);
|
|
|
844
|
|
|
845
|
|
|
846 /* init the all http variables hash */
|
|
|
847
|
|
|
848 cmcf->variables_hash.max_size = 500;
|
|
|
849 cmcf->variables_hash.bucket_limit = 1;
|
|
|
850 cmcf->variables_hash.bucket_size = sizeof(ngx_http_variable_t);
|
|
|
851 cmcf->variables_hash.name = "http variables";
|
|
|
852
|
|
|
853 if (ngx_hash_init(&cmcf->variables_hash, cf->pool,
|
|
|
854 cmcf->all_variables.elts, cmcf->all_variables.nelts) != NGX_OK)
|
|
|
855 {
|
|
|
856 return NGX_ERROR;
|
|
|
857 }
|
|
|
858
|
|
|
859 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
860 "http variables hash size: %ui for %ui values, "
|
|
|
861 "max buckets per entry: %ui",
|
|
|
862 cmcf->variables_hash.hash_size, cmcf->all_variables.nelts,
|
|
|
863 cmcf->variables_hash.min_buckets);
|
|
|
864
|
|
|
865 return NGX_OK;
|
|
|
866 }
|
