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comparison src/http/ngx_http_variables.c @ 186:54aabf2b0bc6 NGINX_0_3_40

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nginx 0.3.40 *) Feature: the ngx_http_dav_module supports the MKCOL method. *) Feature: the "create_full_put_path" directive. *) Feature: the "$limit_rate" variable.
author Igor Sysoev <http://sysoev.ru>
date Wed, 19 Apr 2006 00:00:00 +0400
parents 71ff1e2b484a
children 3689cd4e3228
comparison
equal deleted inserted replaced
185:a9c5dc369ffe 186:54aabf2b0bc6
9 #include <ngx_event.h> 9 #include <ngx_event.h>
10 #include <ngx_http.h> 10 #include <ngx_http.h>
11 11
12 12
13 static ngx_int_t ngx_http_variable_request(ngx_http_request_t *r, 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 void ngx_http_variable_request_set_size(ngx_http_request_t *r,
14 ngx_http_variable_value_t *v, uintptr_t data); 16 ngx_http_variable_value_t *v, uintptr_t data);
15 static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r, 17 static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r,
16 ngx_http_variable_value_t *v, uintptr_t data); 18 ngx_http_variable_value_t *v, uintptr_t data);
17 static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r, 19 static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r,
18 ngx_http_variable_value_t *v, uintptr_t data); 20 ngx_http_variable_value_t *v, uintptr_t data);
57 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner) 59 * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner)
58 */ 60 */
59 61
60 static ngx_http_variable_t ngx_http_core_variables[] = { 62 static ngx_http_variable_t ngx_http_core_variables[] = {
61 63
62 { ngx_string("http_host"), ngx_http_variable_header, 64 { ngx_string("http_host"), NULL, ngx_http_variable_header,
63 offsetof(ngx_http_request_t, headers_in.host), 0, 0 }, 65 offsetof(ngx_http_request_t, headers_in.host), 0, 0 },
64 66
65 { ngx_string("http_user_agent"), ngx_http_variable_header, 67 { ngx_string("http_user_agent"), NULL, ngx_http_variable_header,
66 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 }, 68 offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 },
67 69
68 { ngx_string("http_referer"), ngx_http_variable_header, 70 { ngx_string("http_referer"), NULL, ngx_http_variable_header,
69 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 }, 71 offsetof(ngx_http_request_t, headers_in.referer), 0, 0 },
70 72
71 #if (NGX_HTTP_GZIP) 73 #if (NGX_HTTP_GZIP)
72 { ngx_string("http_via"), ngx_http_variable_header, 74 { ngx_string("http_via"), NULL, ngx_http_variable_header,
73 offsetof(ngx_http_request_t, headers_in.via), 0, 0 }, 75 offsetof(ngx_http_request_t, headers_in.via), 0, 0 },
74 #endif 76 #endif
75 77
76 #if (NGX_HTTP_PROXY) 78 #if (NGX_HTTP_PROXY)
77 { ngx_string("http_x_forwarded_for"), ngx_http_variable_header, 79 { ngx_string("http_x_forwarded_for"), NULL, ngx_http_variable_header,
78 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 }, 80 offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
79 #endif 81 #endif
80 82
81 { ngx_string("http_cookie"), ngx_http_variable_headers, 83 { ngx_string("http_cookie"), NULL, ngx_http_variable_headers,
82 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 }, 84 offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },
83 85
84 { ngx_string("content_length"), ngx_http_variable_header, 86 { ngx_string("content_length"), NULL, ngx_http_variable_header,
85 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 }, 87 offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
86 88
87 { ngx_string("content_type"), ngx_http_variable_header, 89 { ngx_string("content_type"), NULL, ngx_http_variable_header,
88 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 }, 90 offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
89 91
90 { ngx_string("host"), ngx_http_variable_host, 0, 0, 0 }, 92 { ngx_string("host"), NULL, ngx_http_variable_host, 0, 0, 0 },
91 93
92 { ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0, 0 }, 94 { ngx_string("remote_addr"), NULL, ngx_http_variable_remote_addr, 0, 0, 0 },
93 95
94 { ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0, 0 }, 96 { ngx_string("remote_port"), NULL, ngx_http_variable_remote_port, 0, 0, 0 },
95 97
96 { ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0, 0 }, 98 { ngx_string("server_addr"), NULL, ngx_http_variable_server_addr, 0, 0, 0 },
97 99
98 { ngx_string("server_port"), ngx_http_variable_server_port, 0, 0, 0 }, 100 { ngx_string("server_port"), NULL, ngx_http_variable_server_port, 0, 0, 0 },
99 101
100 { ngx_string("server_protocol"), ngx_http_variable_request, 102 { ngx_string("server_protocol"), NULL, ngx_http_variable_request,
101 offsetof(ngx_http_request_t, http_protocol), 0, 0 }, 103 offsetof(ngx_http_request_t, http_protocol), 0, 0 },
102 104
103 { ngx_string("request_uri"), ngx_http_variable_request, 105 { ngx_string("request_uri"), NULL, ngx_http_variable_request,
104 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 }, 106 offsetof(ngx_http_request_t, unparsed_uri), 0, 0 },
105 107
106 { ngx_string("uri"), ngx_http_variable_request, 108 { ngx_string("uri"), NULL, ngx_http_variable_request,
107 offsetof(ngx_http_request_t, uri), 109 offsetof(ngx_http_request_t, uri),
108 NGX_HTTP_VAR_NOCACHABLE, 0 }, 110 NGX_HTTP_VAR_NOCACHABLE, 0 },
109 111
110 { ngx_string("document_uri"), ngx_http_variable_request, 112 { ngx_string("document_uri"), NULL, ngx_http_variable_request,
111 offsetof(ngx_http_request_t, uri), 113 offsetof(ngx_http_request_t, uri),
112 NGX_HTTP_VAR_NOCACHABLE, 0 }, 114 NGX_HTTP_VAR_NOCACHABLE, 0 },
113 115
114 { ngx_string("request"), ngx_http_variable_request, 116 { ngx_string("request"), NULL, ngx_http_variable_request,
115 offsetof(ngx_http_request_t, request_line), 0, 0 }, 117 offsetof(ngx_http_request_t, request_line), 0, 0 },
116 118
117 { ngx_string("document_root"), ngx_http_variable_document_root, 0, 0, 0 }, 119 { ngx_string("document_root"), NULL,
118 120 ngx_http_variable_document_root, 0, 0, 0 },
119 { ngx_string("query_string"), ngx_http_variable_request, 121
122 { ngx_string("query_string"), NULL, ngx_http_variable_request,
120 offsetof(ngx_http_request_t, args), 123 offsetof(ngx_http_request_t, args),
121 NGX_HTTP_VAR_NOCACHABLE, 0 }, 124 NGX_HTTP_VAR_NOCACHABLE, 0 },
122 125
123 { ngx_string("args"), ngx_http_variable_request, 126 { ngx_string("args"), NULL, ngx_http_variable_request,
124 offsetof(ngx_http_request_t, args), 127 offsetof(ngx_http_request_t, args),
125 NGX_HTTP_VAR_NOCACHABLE, 0 }, 128 NGX_HTTP_VAR_NOCACHABLE, 0 },
126 129
127 { ngx_string("request_filename"), ngx_http_variable_request_filename, 0, 130 { ngx_string("request_filename"), NULL,
131 ngx_http_variable_request_filename, 0,
128 NGX_HTTP_VAR_NOCACHABLE, 0 }, 132 NGX_HTTP_VAR_NOCACHABLE, 0 },
129 133
130 { ngx_string("server_name"), ngx_http_variable_request, 134 { ngx_string("server_name"), NULL, ngx_http_variable_request,
131 offsetof(ngx_http_request_t, server_name), 0, 0 }, 135 offsetof(ngx_http_request_t, server_name), 0, 0 },
132 136
133 { ngx_string("request_method"), ngx_http_variable_request_method, 0, 0, 0 }, 137 { ngx_string("request_method"), NULL,
134 138 ngx_http_variable_request_method, 0, 0, 0 },
135 { ngx_string("remote_user"), ngx_http_variable_remote_user, 0, 0, 0 }, 139
136 140 { ngx_string("remote_user"), NULL, ngx_http_variable_remote_user, 0, 0, 0 },
137 { ngx_string("body_bytes_sent"), ngx_http_variable_body_bytes_sent, 141
142 { ngx_string("body_bytes_sent"), NULL, ngx_http_variable_body_bytes_sent,
138 0, 0, 0 }, 143 0, 0, 0 },
139 144
140 { ngx_string("request_completion"), ngx_http_variable_request_completion, 145 { ngx_string("request_completion"), NULL,
146 ngx_http_variable_request_completion,
141 0, 0, 0 }, 147 0, 0, 0 },
142 148
143 { ngx_null_string, NULL, 0, 0, 0 } 149 { ngx_string("limit_rate"), ngx_http_variable_request_set_size,
150 ngx_http_variable_request,
151 offsetof(ngx_http_request_t, limit_rate),
152 NGX_HTTP_VAR_CHANGABLE|NGX_HTTP_VAR_NOCACHABLE, 0 },
153
154 { ngx_null_string, NULL, NULL, 0, 0, 0 }
144 }; 155 };
145 156
146 157
147 ngx_http_variable_value_t ngx_http_variable_null_value = 158 ngx_http_variable_value_t ngx_http_variable_null_value =
148 ngx_http_variable(""); 159 ngx_http_variable("");
193 204
194 for (i = 0; i < name->len; i++) { 205 for (i = 0; i < name->len; i++) {
195 v->name.data[i] = ngx_tolower(name->data[i]); 206 v->name.data[i] = ngx_tolower(name->data[i]);
196 } 207 }
197 208
198 v->handler = NULL; 209 v->set_handler = NULL;
210 v->get_handler = NULL;
199 v->data = 0; 211 v->data = 0;
200 v->flags = flags; 212 v->flags = flags;
201 v->index = 0; 213 v->index = 0;
202 214
203 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, 0); 215 rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, 0);
259 271
260 for (i = 0; i < name->len; i++) { 272 for (i = 0; i < name->len; i++) {
261 v->name.data[i] = ngx_tolower(name->data[i]); 273 v->name.data[i] = ngx_tolower(name->data[i]);
262 } 274 }
263 275
264 v->handler = NULL; 276 v->set_handler = NULL;
277 v->get_handler = NULL;
265 v->data = 0; 278 v->data = 0;
266 v->flags = 0; 279 v->flags = 0;
267 v->index = cmcf->variables.nelts - 1; 280 v->index = cmcf->variables.nelts - 1;
268 281
269 return cmcf->variables.nelts - 1; 282 return cmcf->variables.nelts - 1;
288 return &r->variables[index]; 301 return &r->variables[index];
289 } 302 }
290 303
291 v = cmcf->variables.elts; 304 v = cmcf->variables.elts;
292 305
293 if (v[index].handler(r, &r->variables[index], v[index].data) == NGX_OK) { 306 if (v[index].get_handler(r, &r->variables[index], v[index].data)
294 307 == NGX_OK)
308 {
295 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) { 309 if (v[index].flags & NGX_HTTP_VAR_NOCACHABLE) {
296 r->variables[index].no_cachable = 1; 310 r->variables[index].no_cachable = 1;
297 } 311 }
298 312
299 return &r->variables[index]; 313 return &r->variables[index];
341 355
342 } else { 356 } else {
343 357
344 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); 358 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
345 359
346 if (vv && v->handler(r, vv, v->data) == NGX_OK) { 360 if (vv && v->get_handler(r, vv, v->data) == NGX_OK) {
347 return vv; 361 return vv;
348 } 362 }
349 363
350 return NULL; 364 return NULL;
351 } 365 }
410 424
411 return NGX_OK; 425 return NGX_OK;
412 } 426 }
413 427
414 428
429 static void
430 ngx_http_variable_request_set_size(ngx_http_request_t *r,
431 ngx_http_variable_value_t *v, uintptr_t data)
432 {
433 ssize_t s, *sp;
434 ngx_str_t val;
435
436 val.len = v->len & 0xffff;
437 val.data = v->data;
438
439 s = ngx_parse_size(&val);
440
441 if (s == NGX_ERROR) {
442 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
443 "invalid size \"%V\"", &val);
444 return;
445 }
446
447 sp = (ssize_t *) ((char *) r + data);
448
449 *sp = s;
450
451 return;
452 }
453
454
415 static ngx_int_t 455 static ngx_int_t
416 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v, 456 ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
417 uintptr_t data) 457 uintptr_t data)
418 { 458 {
419 ngx_table_elt_t *h; 459 ngx_table_elt_t *h;
898 && ngx_strncmp(v[i].name.data, key[n].key.data, v[i].name.len) 938 && ngx_strncmp(v[i].name.data, key[n].key.data, v[i].name.len)
899 == 0) 939 == 0)
900 { 940 {
901 av = key[n].value; 941 av = key[n].value;
902 942
903 v[i].handler = av->handler; 943 v[i].get_handler = av->get_handler;
904 v[i].data = av->data; 944 v[i].data = av->data;
905 945
906 av->flags |= NGX_HTTP_VAR_INDEXED; 946 av->flags |= NGX_HTTP_VAR_INDEXED;
907 v[i].flags = av->flags; 947 v[i].flags = av->flags;
908 948
911 goto next; 951 goto next;
912 } 952 }
913 } 953 }
914 954
915 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) { 955 if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
916 v[i].handler = ngx_http_variable_unknown_header_in; 956 v[i].get_handler = ngx_http_variable_unknown_header_in;
917 v[i].data = (uintptr_t) &v[i].name; 957 v[i].data = (uintptr_t) &v[i].name;
918 958
919 continue; 959 continue;
920 } 960 }
921 961
922 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) { 962 if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) {
923 v[i].handler = ngx_http_variable_unknown_header_out; 963 v[i].get_handler = ngx_http_variable_unknown_header_out;
924 v[i].data = (uintptr_t) &v[i].name; 964 v[i].data = (uintptr_t) &v[i].name;
925 965
926 continue; 966 continue;
927 } 967 }
928 968