Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 573:58475592100c release-0.3.8
nginx-0.3.8-RELEASE import
*) Security: nginx now checks URI got from a backend in
"X-Accel-Redirect" header line or in SSI file for the "/../" paths
and zeroes.
*) Change: nginx now does not treat the empty user name in the
"Authorization" header line as valid one.
*) Feature: the "ssl_session_timeout" directives of the
ngx_http_ssl_module and ngx_imap_ssl_module.
*) Feature: the "auth_http_header" directive of the
ngx_imap_auth_http_module.
*) Feature: the "add_header" directive.
*) Feature: the ngx_http_realip_module.
*) Feature: the new variables to use in the "log_format" directive:
$bytes_sent, $apache_bytes_sent, $status, $time_gmt, $uri,
$request_time, $request_length, $upstream_status,
$upstream_response_time, $gzip_ratio, $uid_got, $uid_set,
$connection, $pipe, and $msec. The parameters in the "%name" form
will be canceled soon.
*) Change: now the false variable values in the "if" directive are the
empty string "" and string starting with "0".
*) Bugfix: while using proxied or FastCGI-server nginx may leave
connections and temporary files with client requests in open state.
*) Bugfix: the worker processes did not flush the buffered logs on
graceful exit.
*) Bugfix: if the request URI was changes by the "rewrite" directive
and the request was proxied in location given by regular expression,
then the incorrect request was transferred to backend; the bug had
appeared in 0.2.6.
*) Bugfix: the "expires" directive did not remove the previous
"Expires" header.
*) Bugfix: nginx may stop to accept requests if the "rtsig" method and
several worker processes were used.
*) Bugfix: the "\"" and "\'" escape symbols were incorrectly handled in
SSI commands.
*) Bugfix: if the response was ended just after the SSI command and
gzipping was used, then the response did not transferred complete or
did not transferred at all.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 09 Nov 2005 17:25:55 +0000 |
parents | 7bd37aef1e7e |
children | 4d9ea73a627a |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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11 |
485 | 12 typedef struct { |
509 | 13 ngx_str_t name; |
14 ngx_uint_t wildcard; | |
485 | 15 } ngx_http_rewrite_referer_t; |
16 | |
17 | |
18 typedef struct { | |
509 | 19 ngx_array_t *codes; /* uintptr_t */ |
20 ngx_array_t *referers; /* ngx_http_rewrite_referer_t */ | |
485 | 21 |
515 | 22 ngx_uint_t captures; |
509 | 23 ngx_uint_t stack_size; |
485 | 24 |
509 | 25 ngx_flag_t log; |
485 | 26 |
509 | 27 ngx_flag_t no_referer; |
28 ngx_flag_t blocked_referer; | |
485 | 29 } ngx_http_rewrite_loc_conf_t; |
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31 |
485 | 32 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf); |
33 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, | |
487 | 34 void *parent, void *child); |
509 | 35 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle); |
485 | 36 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
37 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, | |
487 | 38 void *conf); |
527 | 39 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, |
40 void *conf); | |
485 | 41 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, |
487 | 42 void *conf); |
501 | 43 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, |
44 ngx_http_rewrite_loc_conf_t *lcf); | |
45 static char *ngx_http_rewrite_variable(ngx_conf_t *cf, | |
46 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
487 | 47 static char *ngx_http_rewrite_valid_referers(ngx_conf_t *cf, |
48 ngx_command_t *cmd, void *conf); | |
509 | 49 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, |
501 | 50 void *conf); |
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51 |
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53 static ngx_command_t ngx_http_rewrite_commands[] = { |
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54 |
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55 { ngx_string("rewrite"), |
485 | 56 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |
57 |NGX_CONF_TAKE23, | |
58 ngx_http_rewrite, | |
59 NGX_HTTP_LOC_CONF_OFFSET, | |
60 0, | |
61 NULL }, | |
62 | |
63 { ngx_string("return"), | |
64 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
65 |NGX_CONF_TAKE1, | |
66 ngx_http_rewrite_return, | |
67 NGX_HTTP_LOC_CONF_OFFSET, | |
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68 0, |
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69 NULL }, |
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70 |
527 | 71 { ngx_string("break"), |
72 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
73 |NGX_CONF_NOARGS, | |
74 ngx_http_rewrite_break, | |
75 NGX_HTTP_LOC_CONF_OFFSET, | |
76 0, | |
77 NULL }, | |
78 | |
485 | 79 { ngx_string("if"), |
80 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE, | |
81 ngx_http_rewrite_if, | |
437
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82 NGX_HTTP_LOC_CONF_OFFSET, |
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83 0, |
485 | 84 NULL }, |
85 | |
86 { ngx_string("valid_referers"), | |
87 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
88 ngx_http_rewrite_valid_referers, | |
89 NGX_HTTP_LOC_CONF_OFFSET, | |
90 0, | |
91 NULL }, | |
437
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92 |
501 | 93 { ngx_string("set"), |
94 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
95 |NGX_CONF_TAKE2, | |
96 ngx_http_rewrite_set, | |
97 NGX_HTTP_LOC_CONF_OFFSET, | |
98 0, | |
99 NULL }, | |
100 | |
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101 { ngx_string("rewrite_log"), |
485 | 102 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |
103 |NGX_CONF_TAKE1, | |
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104 ngx_conf_set_flag_slot, |
485 | 105 NGX_HTTP_LOC_CONF_OFFSET, |
106 offsetof(ngx_http_rewrite_loc_conf_t, log), | |
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107 NULL }, |
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108 |
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109 ngx_null_command |
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110 }; |
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111 |
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112 |
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113 ngx_http_module_t ngx_http_rewrite_module_ctx = { |
509 | 114 NULL, /* preconfiguration */ |
115 NULL, /* postconfiguration */ | |
216
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116 |
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117 NULL, /* create main configuration */ |
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118 NULL, /* init main configuration */ |
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119 |
485 | 120 NULL, /* create server configuration */ |
121 NULL, /* merge server configuration */ | |
216
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122 |
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123 ngx_http_rewrite_create_loc_conf, /* create location configration */ |
485 | 124 ngx_http_rewrite_merge_loc_conf /* merge location configration */ |
216
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125 }; |
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126 |
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127 |
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128 ngx_module_t ngx_http_rewrite_module = { |
509 | 129 NGX_MODULE_V1, |
485 | 130 &ngx_http_rewrite_module_ctx, /* module context */ |
216
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131 ngx_http_rewrite_commands, /* module directives */ |
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132 NGX_HTTP_MODULE, /* module type */ |
541 | 133 NULL, /* init master */ |
216
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134 ngx_http_rewrite_init, /* init module */ |
541 | 135 NULL, /* init process */ |
136 NULL, /* init thread */ | |
137 NULL, /* exit thread */ | |
138 NULL, /* exit process */ | |
139 NULL, /* exit master */ | |
140 NGX_MODULE_V1_PADDING | |
216
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141 }; |
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142 |
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143 |
501 | 144 static ngx_http_variable_value_t ngx_http_rewrite_null_value = |
573 | 145 ngx_http_variable(""); |
501 | 146 |
485 | 147 |
487 | 148 static ngx_int_t |
149 ngx_http_rewrite_handler(ngx_http_request_t *r) | |
216
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150 { |
509 | 151 ngx_http_script_code_pt code; |
152 ngx_http_script_engine_t *e; | |
485 | 153 ngx_http_rewrite_loc_conf_t *cf; |
216
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154 |
485 | 155 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); |
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156 |
485 | 157 if (cf->codes == NULL) { |
158 return NGX_DECLINED; | |
159 } | |
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160 |
509 | 161 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t)); |
501 | 162 if (e == NULL) { |
485 | 163 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
164 } | |
216
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165 |
509 | 166 e->sp = ngx_pcalloc(r->pool, |
167 cf->stack_size * sizeof(ngx_http_variable_value_t)); | |
485 | 168 if (e->sp == NULL) { |
169 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
170 } | |
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171 |
515 | 172 if (cf->captures) { |
173 e->captures = ngx_palloc(r->pool, cf->captures * sizeof(int)); | |
485 | 174 if (e->captures == NULL) { |
216
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175 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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176 } |
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177 |
485 | 178 } else { |
179 e->captures = NULL; | |
180 } | |
181 | |
182 e->ip = cf->codes->elts; | |
509 | 183 e->request = r; |
485 | 184 e->quote = 1; |
509 | 185 e->log = cf->log; |
485 | 186 e->status = NGX_DECLINED; |
187 | |
188 while (*(uintptr_t *) e->ip) { | |
509 | 189 code = *(ngx_http_script_code_pt *) e->ip; |
485 | 190 code(e); |
191 } | |
192 | |
193 return e->status; | |
194 } | |
195 | |
196 | |
487 | 197 static void |
509 | 198 ngx_http_rewrite_invalid_referer_code(ngx_http_script_engine_t *e) |
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199 { |
485 | 200 u_char *ref; |
201 size_t len; | |
202 ngx_uint_t i, n; | |
203 ngx_http_request_t *r; | |
204 ngx_http_rewrite_referer_t *refs; | |
205 ngx_http_rewrite_loc_conf_t *cf; | |
206 | |
207 r = e->request; | |
208 | |
209 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
210 "http rewrite invalid referer"); | |
211 | |
212 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); | |
213 | |
214 e->ip += sizeof(uintptr_t); | |
215 | |
216 if (cf->referers == NULL) { | |
573 | 217 e->sp->data = (u_char *) ""; |
218 e->sp->len = 0; | |
501 | 219 e->sp++; |
220 | |
485 | 221 return; |
222 } | |
223 | |
224 if (r->headers_in.referer == NULL) { | |
225 if (cf->no_referer) { | |
573 | 226 e->sp->data = (u_char *) ""; |
227 e->sp->len = 0; | |
501 | 228 e->sp++; |
229 | |
485 | 230 return; |
505 | 231 |
485 | 232 } else { |
573 | 233 e->sp->data = (u_char *) "1"; |
234 e->sp->len = 1; | |
501 | 235 e->sp++; |
236 | |
485 | 237 return; |
238 } | |
239 } | |
240 | |
241 len = r->headers_in.referer->value.len; | |
242 ref = r->headers_in.referer->value.data; | |
243 | |
244 if (len < sizeof("http://i.ru") - 1 | |
245 || (ngx_strncasecmp(ref, "http://", 7) != 0)) | |
246 { | |
505 | 247 if (cf->blocked_referer) { |
573 | 248 e->sp->data = (u_char *) ""; |
249 e->sp->len = 0; | |
505 | 250 e->sp++; |
251 | |
252 return; | |
501 | 253 |
505 | 254 } else { |
573 | 255 e->sp->data = (u_char *) "1"; |
256 e->sp->len = 1; | |
505 | 257 e->sp++; |
258 | |
259 return; | |
260 } | |
485 | 261 } |
262 | |
263 len -= 7; | |
264 ref += 7; | |
265 | |
266 refs = cf->referers->elts; | |
267 for (i = 0; i < cf->referers->nelts; i++ ){ | |
268 | |
269 if (refs[i].name.len > len) { | |
270 continue; | |
271 } | |
325
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272 |
485 | 273 if (refs[i].wildcard) { |
274 for (n = 0; n < len; n++) { | |
275 if (ref[n] == '/' || ref[n] == ':') { | |
276 break; | |
277 } | |
278 | |
279 if (ref[n] != '.') { | |
280 continue; | |
281 } | |
282 | |
283 if (ngx_strncmp(&ref[n], refs[i].name.data, | |
284 refs[i].name.len) == 0) | |
285 { | |
573 | 286 e->sp->data = (u_char *) ""; |
287 e->sp->len = 0; | |
501 | 288 e->sp++; |
289 | |
485 | 290 return; |
291 } | |
292 } | |
293 | |
294 } else { | |
295 if (ngx_strncasecmp(refs[i].name.data, ref, refs[i].name.len) == 0) | |
296 { | |
573 | 297 e->sp->data = (u_char *) ""; |
298 e->sp->len = 0; | |
501 | 299 e->sp++; |
300 | |
485 | 301 return; |
302 } | |
303 } | |
304 } | |
325
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305 |
573 | 306 e->sp->data = (u_char *) "1"; |
307 e->sp->len = 1; | |
501 | 308 e->sp++; |
485 | 309 } |
310 | |
311 | |
573 | 312 static ngx_int_t |
313 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
314 uintptr_t data) | |
501 | 315 { |
316 ngx_http_variable_t *var; | |
317 ngx_http_core_main_conf_t *cmcf; | |
318 | |
319 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
320 | |
321 var = cmcf->variables.elts; | |
322 | |
323 /* | |
324 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
519 | 325 * and they should be handled by ngx_http_get_indexed_variable(), |
501 | 326 * so the handler is called only if the variable is not initialized |
327 */ | |
328 | |
329 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
330 "using uninitialized \"%V\" variable", &var[data].name); | |
331 | |
573 | 332 *v = ngx_http_rewrite_null_value; |
333 | |
334 return NGX_OK; | |
501 | 335 } |
336 | |
337 | |
487 | 338 static void * |
339 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
437
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340 { |
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341 ngx_http_rewrite_loc_conf_t *conf; |
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342 |
501 | 343 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
344 if (conf == NULL) { | |
437
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345 return NGX_CONF_ERROR; |
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346 } |
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347 |
485 | 348 conf->stack_size = NGX_CONF_UNSET_UINT; |
349 conf->log = NGX_CONF_UNSET; | |
350 conf->no_referer = NGX_CONF_UNSET; | |
505 | 351 conf->blocked_referer = NGX_CONF_UNSET; |
485 | 352 |
437
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353 return conf; |
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354 } |
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355 |
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356 |
487 | 357 static char * |
358 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
216
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359 { |
485 | 360 ngx_http_rewrite_loc_conf_t *prev = parent; |
361 ngx_http_rewrite_loc_conf_t *conf = child; | |
362 | |
509 | 363 uintptr_t *code; |
485 | 364 |
365 ngx_conf_merge_value(conf->log, prev->log, 0); | |
366 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10); | |
367 | |
368 if (conf->referers == NULL) { | |
369 conf->referers = prev->referers; | |
370 ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0); | |
505 | 371 ngx_conf_merge_value(conf->blocked_referer, prev->blocked_referer, 0); |
485 | 372 } |
373 | |
499 | 374 if (conf->no_referer == NGX_CONF_UNSET) { |
375 conf->no_referer = 0; | |
376 } | |
377 | |
505 | 378 if (conf->blocked_referer == NGX_CONF_UNSET) { |
379 conf->blocked_referer = 0; | |
380 } | |
381 | |
485 | 382 if (conf->codes == NULL) { |
383 return NGX_CONF_OK; | |
384 } | |
385 | |
386 if (conf->codes == prev->codes) { | |
387 return NGX_CONF_OK; | |
388 } | |
389 | |
501 | 390 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
391 if (code == NULL) { | |
216
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392 return NGX_CONF_ERROR; |
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393 } |
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394 |
485 | 395 *code = (uintptr_t) NULL; |
396 | |
397 return NGX_CONF_OK; | |
398 } | |
399 | |
216
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400 |
509 | 401 static ngx_int_t |
402 ngx_http_rewrite_init(ngx_cycle_t *cycle) | |
403 { | |
404 ngx_http_handler_pt *h; | |
405 ngx_http_core_main_conf_t *cmcf; | |
406 | |
407 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); | |
408 | |
573 | 409 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
410 if (h == NULL) { | |
411 return NGX_ERROR; | |
412 } | |
413 | |
414 *h = ngx_http_rewrite_handler; | |
415 | |
509 | 416 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
417 if (h == NULL) { | |
418 return NGX_ERROR; | |
419 } | |
420 | |
421 *h = ngx_http_rewrite_handler; | |
422 | |
423 return NGX_OK; | |
424 } | |
425 | |
426 | |
487 | 427 static char * |
428 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 429 { |
430 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
431 | |
509 | 432 ngx_str_t *value, err; |
433 ngx_int_t n; | |
434 ngx_uint_t last; | |
435 ngx_http_script_code_pt *code; | |
436 ngx_http_script_compile_t sc; | |
437 ngx_http_script_regex_code_t *regex; | |
438 ngx_http_script_regex_end_code_t *regex_end; | |
439 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
485 | 440 |
509 | 441 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
442 sizeof(ngx_http_script_regex_code_t)); | |
485 | 443 if (regex == NULL) { |
444 return NGX_CONF_ERROR; | |
445 } | |
216
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446 |
509 | 447 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
448 | |
216
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449 value = cf->args->elts; |
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450 |
485 | 451 err.len = NGX_MAX_CONF_ERRSTR; |
452 err.data = errstr; | |
453 | |
454 /* TODO: NGX_REGEX_CASELESS */ | |
455 | |
456 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
457 | |
458 if (regex->regex == NULL) { | |
459 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
460 return NGX_CONF_ERROR; | |
461 } | |
462 | |
509 | 463 regex->code = ngx_http_script_regex_start_code; |
485 | 464 regex->uri = 1; |
465 regex->name = value[1]; | |
216
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466 |
509 | 467 if (value[2].data[value[2].len - 1] == '?') { |
468 | |
469 /* the last "?" drops the original arguments */ | |
470 value[2].len--; | |
471 | |
472 } else { | |
473 regex->add_args = 1; | |
474 } | |
475 | |
485 | 476 last = 0; |
477 | |
478 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) { | |
479 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
480 regex->redirect = 1; | |
481 last = 1; | |
482 } | |
483 | |
484 if (cf->args->nelts == 4) { | |
485 if (ngx_strcmp(value[3].data, "last") == 0) { | |
486 last = 1; | |
216
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487 |
487 | 488 } else if (ngx_strcmp(value[3].data, "break") == 0) { |
489 regex->break_cycle = 1; | |
490 last = 1; | |
491 | |
485 | 492 } else if (ngx_strcmp(value[3].data, "redirect") == 0) { |
493 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
494 regex->redirect = 1; | |
495 last = 1; | |
326
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496 |
485 | 497 } else if (ngx_strcmp(value[3].data, "permanent") == 0) { |
498 regex->status = NGX_HTTP_MOVED_PERMANENTLY; | |
499 regex->redirect = 1; | |
500 last = 1; | |
326
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501 |
485 | 502 } else { |
326
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503 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
461 | 504 "invalid parameter \"%V\"", &value[3]); |
326
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505 return NGX_CONF_ERROR; |
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506 } |
485 | 507 } |
326
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508 |
509 | 509 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
485 | 510 |
509 | 511 sc.cf = cf; |
512 sc.source = &value[2]; | |
513 sc.lengths = ®ex->lengths; | |
514 sc.values = &lcf->codes; | |
515 sc.variables = ngx_http_script_variables_count(&value[2]); | |
516 sc.main = regex; | |
517 sc.complete_lengths = 1; | |
518 sc.compile_args = !regex->redirect; | |
485 | 519 |
509 | 520 if (ngx_http_script_compile(&sc) != NGX_OK) { |
521 return NGX_CONF_ERROR; | |
522 } | |
485 | 523 |
509 | 524 regex = sc.main; |
216
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525 |
509 | 526 regex->ncaptures = sc.ncaptures; |
527 regex->size = sc.size; | |
528 regex->args = sc.args; | |
216
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529 |
509 | 530 if (sc.variables == 0) { |
531 regex->lengths = NULL; | |
485 | 532 } |
533 | |
534 n = ngx_regex_capture_count(regex->regex); | |
535 | |
501 | 536 if (n < 0) { |
537 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
538 ngx_regex_capture_count_n " failed for " | |
539 "pattern \"%V\"", &value[1]); | |
540 return NGX_CONF_ERROR; | |
541 } | |
542 | |
543 if (regex->ncaptures > (ngx_uint_t) n) { | |
485 | 544 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
545 "pattern \"%V\" has less captures " | |
546 "than referrenced in substitution \"%V\"", | |
547 &value[1], &value[2]); | |
548 return NGX_CONF_ERROR; | |
549 } | |
550 | |
501 | 551 if (regex->ncaptures < (ngx_uint_t) n) { |
552 regex->ncaptures = (ngx_uint_t) n; | |
485 | 553 } |
481 | 554 |
485 | 555 if (regex->ncaptures) { |
556 regex->ncaptures = (regex->ncaptures + 1) * 3; | |
557 | |
515 | 558 if (lcf->captures < regex->ncaptures) { |
559 lcf->captures = regex->ncaptures; | |
560 } | |
509 | 561 } |
562 | |
563 regex_end = ngx_http_script_add_code(lcf->codes, | |
564 sizeof(ngx_http_script_regex_end_code_t), | |
565 ®ex); | |
485 | 566 if (regex_end == NULL) { |
567 return NGX_CONF_ERROR; | |
568 } | |
569 | |
509 | 570 regex_end->code = ngx_http_script_regex_end_code; |
485 | 571 regex_end->uri = regex->uri; |
572 regex_end->args = regex->args; | |
509 | 573 regex_end->add_args = regex->add_args; |
485 | 574 regex_end->redirect = regex->redirect; |
575 | |
576 if (last) { | |
517 | 577 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
485 | 578 if (code == NULL) { |
579 return NGX_CONF_ERROR; | |
218
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580 } |
216
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581 |
485 | 582 *code = (uintptr_t) NULL; |
583 } | |
584 | |
585 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
586 - (u_char *) regex; | |
587 | |
588 return NGX_CONF_OK; | |
589 } | |
590 | |
591 | |
487 | 592 static char * |
593 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 594 { |
595 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
216
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596 |
509 | 597 ngx_str_t *value; |
598 ngx_http_script_return_code_t *ret; | |
485 | 599 |
509 | 600 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
601 sizeof(ngx_http_script_return_code_t)); | |
485 | 602 if (ret == NULL) { |
603 return NGX_CONF_ERROR; | |
604 } | |
605 | |
606 value = cf->args->elts; | |
607 | |
509 | 608 ret->code = ngx_http_script_return_code; |
485 | 609 ret->null = (uintptr_t) NULL; |
610 | |
611 ret->status = ngx_atoi(value[1].data, value[1].len); | |
612 | |
613 if (ret->status == (uintptr_t) NGX_ERROR) { | |
614 return NGX_CONF_ERROR; | |
216
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615 } |
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616 |
f1d0e5f09c1e
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617 return NGX_CONF_OK; |
f1d0e5f09c1e
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618 } |
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619 |
f1d0e5f09c1e
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620 |
487 | 621 static char * |
527 | 622 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
623 { | |
624 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
625 | |
626 ngx_http_script_code_pt *code; | |
627 | |
628 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
629 if (code == NULL) { | |
630 return NGX_CONF_ERROR; | |
631 } | |
632 | |
633 *code = ngx_http_script_break_code; | |
634 | |
635 return NGX_CONF_OK; | |
636 } | |
637 | |
638 | |
639 static char * | |
487 | 640 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
437
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641 { |
485 | 642 ngx_http_rewrite_loc_conf_t *lcf = conf; |
643 | |
644 void *mconf; | |
645 char *rv; | |
646 u_char *elts; | |
647 ngx_uint_t i; | |
648 ngx_conf_t save; | |
649 ngx_http_module_t *module; | |
650 ngx_http_conf_ctx_t *ctx, *pctx; | |
651 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp; | |
509 | 652 ngx_http_script_if_code_t *if_code; |
485 | 653 ngx_http_rewrite_loc_conf_t *nlcf; |
654 | |
501 | 655 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
656 if (ctx == NULL) { | |
485 | 657 return NGX_CONF_ERROR; |
658 } | |
659 | |
660 pctx = cf->ctx; | |
661 ctx->main_conf = pctx->main_conf; | |
662 ctx->srv_conf = pctx->srv_conf; | |
663 | |
664 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
665 if (ctx->loc_conf == NULL) { | |
666 return NGX_CONF_ERROR; | |
667 } | |
668 | |
669 for (i = 0; ngx_modules[i]; i++) { | |
670 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
671 continue; | |
672 } | |
673 | |
674 module = ngx_modules[i]->ctx; | |
675 | |
676 if (module->create_loc_conf) { | |
677 | |
501 | 678 mconf = module->create_loc_conf(cf); |
679 if (mconf == NULL) { | |
485 | 680 return NGX_CONF_ERROR; |
681 } | |
682 | |
683 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
684 } | |
685 } | |
686 | |
687 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
688 | |
689 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
690 clcf->loc_conf = ctx->loc_conf; | |
691 clcf->name = pclcf->name; | |
692 clcf->noname = 1; | |
693 | |
694 if (pclcf->locations.elts == NULL) { | |
695 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *)) | |
555 | 696 == NGX_ERROR) |
485 | 697 { |
698 return NGX_CONF_ERROR; | |
699 } | |
700 } | |
701 | |
501 | 702 clcfp = ngx_array_push(&pclcf->locations); |
703 if (clcfp == NULL) { | |
485 | 704 return NGX_CONF_ERROR; |
705 } | |
706 | |
707 *clcfp = clcf; | |
708 | |
709 | |
501 | 710 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
485 | 711 return NGX_CONF_ERROR; |
712 } | |
713 | |
509 | 714 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
485 | 715 if (if_code == NULL) { |
716 return NULL; | |
717 } | |
718 | |
509 | 719 if_code->code = ngx_http_script_if_code; |
485 | 720 |
721 elts = lcf->codes->elts; | |
722 | |
723 | |
724 /* the inside directives must compile to the same code array */ | |
725 | |
726 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
727 nlcf->codes = lcf->codes; | |
728 | |
729 | |
730 save = *cf; | |
731 cf->ctx = ctx; | |
732 | |
733 if (pclcf->name.len == 0) { | |
734 if_code->loc_conf = NULL; | |
735 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
736 | |
737 } else { | |
738 if_code->loc_conf = ctx->loc_conf; | |
739 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
740 } | |
741 | |
742 rv = ngx_conf_parse(cf, NULL); | |
743 | |
744 *cf = save; | |
745 | |
746 if (rv != NGX_CONF_OK) { | |
747 return rv; | |
748 } | |
749 | |
750 | |
517 | 751 if (lcf->captures < nlcf->captures) { |
752 lcf->captures = nlcf->captures; | |
753 } | |
754 | |
755 | |
485 | 756 if (elts != lcf->codes->elts) { |
509 | 757 if_code = (ngx_http_script_if_code_t *) |
485 | 758 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
759 } | |
760 | |
761 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
762 - (u_char *) if_code; | |
437
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
763 |
555 | 764 /* the code array belong to parent block */ |
765 | |
766 nlcf->codes = NULL; | |
767 | |
437
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
768 return NGX_CONF_OK; |
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
769 } |
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
770 |
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
771 |
487 | 772 static char * |
501 | 773 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
774 { | |
509 | 775 ngx_str_t *value, err; |
515 | 776 ngx_uint_t cur, last, n; |
509 | 777 ngx_http_script_regex_code_t *regex; |
778 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
501 | 779 |
780 value = cf->args->elts; | |
781 last = cf->args->nelts - 1; | |
782 | |
783 if (value[1].len < 1 || value[1].data[0] != '(') { | |
784 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
785 "invalid condition \"%V\"", &value[1]); | |
786 return NGX_CONF_ERROR; | |
787 } | |
788 | |
789 if (value[1].len == 1) { | |
790 cur = 2; | |
791 | |
792 } else { | |
793 cur = 1; | |
794 value[1].len--; | |
795 value[1].data++; | |
796 } | |
797 | |
798 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
799 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
800 "invalid condition \"%V\"", &value[last]); | |
801 return NGX_CONF_ERROR; | |
802 } | |
803 | |
804 if (value[last].len == 1) { | |
805 last--; | |
806 | |
807 } else { | |
808 value[last].len--; | |
809 value[last].data[value[last].len] = '\0'; | |
810 } | |
811 | |
812 if (value[cur].len > 1 && value[cur].data[0] == '$') { | |
813 | |
814 if (cur != last && cur + 2 != last) { | |
815 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
816 "invalid condition \"%V\"", &value[cur]); | |
817 return NGX_CONF_ERROR; | |
818 } | |
819 | |
820 if (ngx_http_rewrite_variable(cf, lcf, &value[cur])!= NGX_CONF_OK) { | |
821 return NGX_CONF_ERROR; | |
822 } | |
823 | |
824 if (cur == last) { | |
825 return NGX_CONF_OK; | |
826 } | |
827 | |
828 cur++; | |
829 | |
830 if ((value[cur].len == 1 && value[cur].data[0] != '~') | |
831 || (value[cur].len == 2 | |
832 && value[cur].data[0] != '~' && value[cur].data[1] != '*')) | |
833 { | |
834 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
835 "unexpected \"%V\" in condition", &value[cur]); | |
836 return NGX_CONF_ERROR; | |
837 } | |
838 | |
509 | 839 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
840 sizeof(ngx_http_script_regex_code_t)); | |
501 | 841 if (regex == NULL) { |
842 return NGX_CONF_ERROR; | |
843 } | |
844 | |
509 | 845 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
846 | |
501 | 847 err.len = NGX_MAX_CONF_ERRSTR; |
848 err.data = errstr; | |
849 | |
850 regex->regex = ngx_regex_compile(&value[last], | |
851 (value[cur].len == 2) ? NGX_REGEX_CASELESS : 0, | |
852 cf->pool, &err); | |
853 | |
854 if (regex->regex == NULL) { | |
855 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
856 return NGX_CONF_ERROR; | |
857 } | |
858 | |
509 | 859 regex->code = ngx_http_script_regex_start_code; |
860 regex->next = sizeof(ngx_http_script_regex_code_t); | |
501 | 861 regex->test = 1; |
862 regex->name = value[last]; | |
863 | |
515 | 864 n = ngx_regex_capture_count(regex->regex); |
865 | |
866 if (n) { | |
867 regex->ncaptures = (n + 1) * 3; | |
868 | |
869 if (lcf->captures < regex->ncaptures) { | |
870 lcf->captures = regex->ncaptures; | |
871 } | |
872 } | |
873 | |
501 | 874 return NGX_CONF_OK; |
875 } | |
876 | |
877 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
878 "invalid condition \"%V\"", &value[cur]); | |
879 | |
880 return NGX_CONF_ERROR; | |
881 } | |
882 | |
883 | |
884 static char * | |
885 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
886 ngx_str_t *value) | |
887 { | |
509 | 888 ngx_int_t index; |
889 ngx_http_script_code_pt *code; | |
890 ngx_http_script_var_code_t *var_code; | |
501 | 891 |
892 value->len--; | |
893 value->data++; | |
894 | |
895 if (value->len == sizeof("invalid_referer") - 1 | |
896 && ngx_strncmp(value->data, "invalid_referer", | |
897 sizeof("invalid_referer") - 1) == 0) | |
898 { | |
509 | 899 code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
900 sizeof(ngx_http_script_code_pt)); | |
501 | 901 if (code == NULL) { |
902 return NGX_CONF_ERROR; | |
903 } | |
904 | |
905 *code = ngx_http_rewrite_invalid_referer_code; | |
906 | |
907 } else { | |
509 | 908 index = ngx_http_get_variable_index(cf, value); |
501 | 909 |
509 | 910 if (index == NGX_ERROR) { |
501 | 911 return NGX_CONF_ERROR; |
912 } | |
913 | |
509 | 914 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
915 sizeof(ngx_http_script_var_code_t)); | |
501 | 916 if (var_code == NULL) { |
917 return NGX_CONF_ERROR; | |
918 } | |
919 | |
509 | 920 var_code->code = ngx_http_script_var_code; |
921 var_code->index = index; | |
501 | 922 } |
923 | |
924 return NGX_CONF_OK; | |
925 } | |
926 | |
927 | |
928 static char * | |
487 | 929 ngx_http_rewrite_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
930 { |
485 | 931 ngx_http_rewrite_loc_conf_t *lcf = conf; |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
932 |
485 | 933 ngx_uint_t i, server_names; |
934 ngx_str_t *value; | |
935 ngx_http_server_name_t *sn; | |
936 ngx_http_core_srv_conf_t *cscf; | |
937 ngx_http_rewrite_referer_t *ref; | |
938 | |
939 cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module); | |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
940 |
485 | 941 if (lcf->referers == NULL) { |
942 lcf->referers = ngx_array_create(cf->pool, | |
943 cf->args->nelts + cscf->server_names.nelts, | |
944 sizeof(ngx_http_rewrite_referer_t)); | |
945 if (lcf->referers == NULL) { | |
946 return NGX_CONF_ERROR; | |
947 } | |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
948 } |
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
949 |
485 | 950 value = cf->args->elts; |
951 server_names = 0; | |
952 | |
953 for (i = 1; i < cf->args->nelts; i++) { | |
954 if (value[i].len == 0) { | |
955 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
956 "invalid referer \"%V\"", &value[i]); | |
957 return NGX_CONF_ERROR; | |
958 } | |
959 | |
960 if (ngx_strcmp(value[i].data, "none") == 0) { | |
961 lcf->no_referer = 1; | |
962 continue; | |
963 } | |
964 | |
505 | 965 if (ngx_strcmp(value[i].data, "blocked") == 0) { |
966 lcf->blocked_referer = 1; | |
967 continue; | |
968 } | |
969 | |
485 | 970 if (ngx_strcmp(value[i].data, "server_names") == 0) { |
971 server_names = 1; | |
972 continue; | |
973 } | |
974 | |
501 | 975 ref = ngx_array_push(lcf->referers); |
976 if (ref == NULL) { | |
485 | 977 return NGX_CONF_ERROR; |
978 } | |
979 | |
980 if (value[i].data[0] != '*') { | |
981 ref->name = value[i]; | |
982 ref->wildcard = 0; | |
983 continue; | |
984 } | |
985 | |
986 if (value[i].data[1] != '.') { | |
987 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
988 "invalid wildcard referer \"%V\"", &value[i]); | |
989 return NGX_CONF_ERROR; | |
990 } | |
991 | |
992 ref->name.len = value[i].len - 1; | |
993 ref->name.data = value[i].data + 1; | |
994 ref->wildcard = 1; | |
995 } | |
996 | |
997 if (!server_names) { | |
998 return NGX_CONF_OK; | |
999 } | |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1000 |
485 | 1001 sn = cscf->server_names.elts; |
1002 for (i = 0; i < cscf->server_names.nelts; i++) { | |
501 | 1003 ref = ngx_array_push(lcf->referers); |
1004 if (ref == NULL) { | |
485 | 1005 return NGX_CONF_ERROR; |
1006 } | |
1007 | |
1008 ref->name.len = sn[i].name.len + 1; | |
501 | 1009 ref->name.data = ngx_palloc(cf->pool, ref->name.len); |
1010 if (ref->name.data == NULL) { | |
485 | 1011 return NGX_CONF_ERROR; |
1012 } | |
1013 | |
1014 ngx_memcpy(ref->name.data, sn[i].name.data, sn[i].name.len); | |
1015 ref->name.data[sn[i].name.len] = '/'; | |
1016 ref->wildcard = sn[i].wildcard; | |
1017 } | |
1018 | |
1019 return NGX_CONF_OK; | |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
1020 } |
485 | 1021 |
1022 | |
501 | 1023 static char * |
1024 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
1025 { | |
1026 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
1027 | |
515 | 1028 ngx_int_t n, index; |
1029 ngx_str_t *value; | |
1030 ngx_http_variable_t *v; | |
1031 ngx_http_script_compile_t sc; | |
1032 ngx_http_script_var_code_t *var; | |
1033 ngx_http_script_value_code_t *val; | |
1034 ngx_http_script_complex_value_code_t *complex; | |
501 | 1035 |
1036 value = cf->args->elts; | |
1037 | |
1038 if (value[1].data[0] != '$') { | |
1039 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
1040 "invalid variable name \"%V\"", &value[1]); | |
1041 return NGX_CONF_ERROR; | |
1042 } | |
1043 | |
1044 value[1].len--; | |
1045 value[1].data++; | |
1046 | |
509 | 1047 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGABLE); |
501 | 1048 if (v == NULL) { |
1049 return NGX_CONF_ERROR; | |
1050 } | |
1051 | |
509 | 1052 index = ngx_http_get_variable_index(cf, &value[1]); |
1053 if (index == NGX_ERROR) { | |
1054 return NGX_CONF_ERROR; | |
1055 } | |
501 | 1056 |
555 | 1057 if (v->handler == NULL) { |
1058 v->handler = ngx_http_rewrite_var; | |
1059 v->data = index; | |
1060 } | |
509 | 1061 |
515 | 1062 n = ngx_http_script_variables_count(&value[2]); |
1063 | |
1064 if (n == 0) { | |
1065 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
1066 sizeof(ngx_http_script_value_code_t)); | |
1067 if (val == NULL) { | |
1068 return NGX_CONF_ERROR; | |
1069 } | |
501 | 1070 |
515 | 1071 n = ngx_atoi(value[2].data, value[2].len); |
1072 | |
1073 if (n == NGX_ERROR) { | |
1074 n = 0; | |
1075 } | |
1076 | |
1077 val->code = ngx_http_script_value_code; | |
1078 val->value = (uintptr_t) n; | |
1079 val->text_len = (uintptr_t) value[2].len; | |
1080 val->text_data = (uintptr_t) value[2].data; | |
501 | 1081 |
515 | 1082 } else { |
1083 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
1084 sizeof(ngx_http_script_complex_value_code_t)); | |
1085 if (complex == NULL) { | |
1086 return NGX_CONF_ERROR; | |
1087 } | |
1088 | |
1089 complex->code = ngx_http_script_complex_value_code; | |
1090 complex->lengths = NULL; | |
1091 | |
1092 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
501 | 1093 |
515 | 1094 sc.cf = cf; |
1095 sc.source = &value[2]; | |
1096 sc.lengths = &complex->lengths; | |
1097 sc.values = &lcf->codes; | |
1098 sc.variables = n; | |
1099 sc.complete_lengths = 1; | |
1100 | |
1101 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
1102 return NGX_CONF_ERROR; | |
1103 } | |
1104 } | |
501 | 1105 |
509 | 1106 var = ngx_http_script_start_code(cf->pool, &lcf->codes, |
1107 sizeof(ngx_http_script_var_code_t)); | |
501 | 1108 if (var == NULL) { |
1109 return NGX_CONF_ERROR; | |
1110 } | |
1111 | |
509 | 1112 var->code = ngx_http_script_set_var_code; |
1113 var->index = (uintptr_t) index; | |
501 | 1114 |
1115 return NGX_CONF_OK; | |
1116 } |