Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 635:18268abd340c release-0.3.39
nginx-0.3.39-RELEASE import
*) Feature: the "uninitialized_variable_warn" directive; the logging
level of the "uninitialized variable" message was lowered from
"alert" to "warn".
*) Feature: the "override_charset" directive.
*) Change: now if the unknown variable is used in the "echo" and "if
expr='$name'" SSI-commands, then the "unknown variable" message is
not logged.
*) Bugfix: the active connection counter increased on the exceeding of
the connection limit specified by the "worker_connections"
directive; the bug had appeared in 0.2.0.
*) Bugfix: the limit rate might not work on some condition; the bug had
appeared in 0.3.38.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 17 Apr 2006 19:55:41 +0000 |
parents | 5d2b8078c1c2 |
children | e60fe4cf1d4e |
rev | line source |
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1 |
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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 { |
577 | 13 ngx_array_t *codes; /* uintptr_t */ |
485 | 14 |
577 | 15 ngx_uint_t captures; |
16 ngx_uint_t stack_size; | |
485 | 17 |
577 | 18 ngx_flag_t log; |
635 | 19 ngx_flag_t uninitialized_variable_warn; |
485 | 20 } ngx_http_rewrite_loc_conf_t; |
216
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21 |
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22 |
485 | 23 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf); |
24 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, | |
487 | 25 void *parent, void *child); |
509 | 26 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle); |
485 | 27 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
28 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, | |
487 | 29 void *conf); |
527 | 30 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, |
31 void *conf); | |
485 | 32 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, |
487 | 33 void *conf); |
501 | 34 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, |
35 ngx_http_rewrite_loc_conf_t *lcf); | |
36 static char *ngx_http_rewrite_variable(ngx_conf_t *cf, | |
37 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
509 | 38 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, |
501 | 39 void *conf); |
577 | 40 static char * ngx_http_rewrite_value(ngx_conf_t *cf, |
41 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
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42 |
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44 static ngx_command_t ngx_http_rewrite_commands[] = { |
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45 |
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46 { ngx_string("rewrite"), |
485 | 47 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |
48 |NGX_CONF_TAKE23, | |
49 ngx_http_rewrite, | |
50 NGX_HTTP_LOC_CONF_OFFSET, | |
51 0, | |
52 NULL }, | |
53 | |
54 { ngx_string("return"), | |
55 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
56 |NGX_CONF_TAKE1, | |
57 ngx_http_rewrite_return, | |
58 NGX_HTTP_LOC_CONF_OFFSET, | |
216
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59 0, |
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60 NULL }, |
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61 |
527 | 62 { ngx_string("break"), |
63 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
64 |NGX_CONF_NOARGS, | |
65 ngx_http_rewrite_break, | |
66 NGX_HTTP_LOC_CONF_OFFSET, | |
67 0, | |
68 NULL }, | |
69 | |
485 | 70 { ngx_string("if"), |
71 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE, | |
72 ngx_http_rewrite_if, | |
437
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73 NGX_HTTP_LOC_CONF_OFFSET, |
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74 0, |
485 | 75 NULL }, |
76 | |
577 | 77 #if 0 |
485 | 78 { ngx_string("valid_referers"), |
79 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
80 ngx_http_rewrite_valid_referers, | |
81 NGX_HTTP_LOC_CONF_OFFSET, | |
82 0, | |
83 NULL }, | |
577 | 84 #endif |
437
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85 |
501 | 86 { ngx_string("set"), |
87 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
88 |NGX_CONF_TAKE2, | |
89 ngx_http_rewrite_set, | |
90 NGX_HTTP_LOC_CONF_OFFSET, | |
91 0, | |
92 NULL }, | |
93 | |
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94 { ngx_string("rewrite_log"), |
635 | 95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF |
96 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
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97 ngx_conf_set_flag_slot, |
485 | 98 NGX_HTTP_LOC_CONF_OFFSET, |
99 offsetof(ngx_http_rewrite_loc_conf_t, log), | |
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100 NULL }, |
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101 |
635 | 102 { ngx_string("uninitialized_variable_warn"), |
103 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF | |
104 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
105 ngx_conf_set_flag_slot, | |
106 NGX_HTTP_LOC_CONF_OFFSET, | |
107 offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn), | |
108 NULL }, | |
109 | |
216
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110 ngx_null_command |
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111 }; |
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112 |
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113 |
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114 ngx_http_module_t ngx_http_rewrite_module_ctx = { |
509 | 115 NULL, /* preconfiguration */ |
116 NULL, /* postconfiguration */ | |
216
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117 |
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118 NULL, /* create main configuration */ |
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119 NULL, /* init main configuration */ |
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120 |
485 | 121 NULL, /* create server configuration */ |
122 NULL, /* merge server configuration */ | |
216
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123 |
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124 ngx_http_rewrite_create_loc_conf, /* create location configration */ |
485 | 125 ngx_http_rewrite_merge_loc_conf /* merge location configration */ |
216
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126 }; |
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127 |
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128 |
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129 ngx_module_t ngx_http_rewrite_module = { |
509 | 130 NGX_MODULE_V1, |
577 | 131 &ngx_http_rewrite_module_ctx, /* module context */ |
216
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132 ngx_http_rewrite_commands, /* module directives */ |
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133 NGX_HTTP_MODULE, /* module type */ |
541 | 134 NULL, /* init master */ |
216
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135 ngx_http_rewrite_init, /* init module */ |
541 | 136 NULL, /* init process */ |
137 NULL, /* init thread */ | |
138 NULL, /* exit thread */ | |
139 NULL, /* exit process */ | |
140 NULL, /* exit master */ | |
141 NGX_MODULE_V1_PADDING | |
216
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142 }; |
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143 |
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144 |
487 | 145 static ngx_int_t |
146 ngx_http_rewrite_handler(ngx_http_request_t *r) | |
216
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147 { |
509 | 148 ngx_http_script_code_pt code; |
149 ngx_http_script_engine_t *e; | |
635 | 150 ngx_http_rewrite_loc_conf_t *rlcf; |
216
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151 |
635 | 152 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); |
216
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153 |
635 | 154 if (rlcf->codes == NULL) { |
485 | 155 return NGX_DECLINED; |
156 } | |
216
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157 |
509 | 158 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t)); |
501 | 159 if (e == NULL) { |
485 | 160 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
161 } | |
216
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162 |
509 | 163 e->sp = ngx_pcalloc(r->pool, |
635 | 164 rlcf->stack_size * sizeof(ngx_http_variable_value_t)); |
485 | 165 if (e->sp == NULL) { |
166 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
167 } | |
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168 |
635 | 169 if (rlcf->captures) { |
170 e->captures = ngx_palloc(r->pool, rlcf->captures * sizeof(int)); | |
485 | 171 if (e->captures == NULL) { |
216
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172 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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173 } |
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174 |
485 | 175 } else { |
176 e->captures = NULL; | |
177 } | |
178 | |
635 | 179 e->ip = rlcf->codes->elts; |
509 | 180 e->request = r; |
485 | 181 e->quote = 1; |
635 | 182 e->log = rlcf->log; |
485 | 183 e->status = NGX_DECLINED; |
184 | |
185 while (*(uintptr_t *) e->ip) { | |
509 | 186 code = *(ngx_http_script_code_pt *) e->ip; |
485 | 187 code(e); |
188 } | |
189 | |
190 return e->status; | |
191 } | |
192 | |
193 | |
573 | 194 static ngx_int_t |
195 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
196 uintptr_t data) | |
501 | 197 { |
635 | 198 ngx_http_variable_t *var; |
199 ngx_http_core_main_conf_t *cmcf; | |
200 ngx_http_rewrite_loc_conf_t *rlcf; | |
201 | |
202 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); | |
203 | |
204 if (rlcf->uninitialized_variable_warn == 0) { | |
205 *v = ngx_http_variable_null_value; | |
206 return NGX_OK; | |
207 } | |
501 | 208 |
209 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
210 | |
211 var = cmcf->variables.elts; | |
212 | |
213 /* | |
214 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
519 | 215 * and they should be handled by ngx_http_get_indexed_variable(), |
501 | 216 * so the handler is called only if the variable is not initialized |
217 */ | |
218 | |
635 | 219 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, |
501 | 220 "using uninitialized \"%V\" variable", &var[data].name); |
221 | |
577 | 222 *v = ngx_http_variable_null_value; |
573 | 223 |
224 return NGX_OK; | |
501 | 225 } |
226 | |
227 | |
487 | 228 static void * |
229 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
437
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230 { |
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231 ngx_http_rewrite_loc_conf_t *conf; |
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232 |
501 | 233 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
234 if (conf == NULL) { | |
437
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235 return NGX_CONF_ERROR; |
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236 } |
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237 |
485 | 238 conf->stack_size = NGX_CONF_UNSET_UINT; |
239 conf->log = NGX_CONF_UNSET; | |
635 | 240 conf->uninitialized_variable_warn = NGX_CONF_UNSET; |
485 | 241 |
437
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242 return conf; |
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243 } |
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244 |
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245 |
487 | 246 static char * |
247 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
216
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248 { |
485 | 249 ngx_http_rewrite_loc_conf_t *prev = parent; |
250 ngx_http_rewrite_loc_conf_t *conf = child; | |
251 | |
509 | 252 uintptr_t *code; |
485 | 253 |
254 ngx_conf_merge_value(conf->log, prev->log, 0); | |
635 | 255 ngx_conf_merge_value(conf->uninitialized_variable_warn, |
256 prev->uninitialized_variable_warn, 1); | |
485 | 257 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10); |
258 | |
259 if (conf->codes == NULL) { | |
260 return NGX_CONF_OK; | |
261 } | |
262 | |
263 if (conf->codes == prev->codes) { | |
264 return NGX_CONF_OK; | |
265 } | |
266 | |
501 | 267 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
268 if (code == NULL) { | |
216
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269 return NGX_CONF_ERROR; |
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270 } |
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271 |
485 | 272 *code = (uintptr_t) NULL; |
273 | |
274 return NGX_CONF_OK; | |
275 } | |
276 | |
216
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277 |
509 | 278 static ngx_int_t |
279 ngx_http_rewrite_init(ngx_cycle_t *cycle) | |
577 | 280 { |
509 | 281 ngx_http_handler_pt *h; |
282 ngx_http_core_main_conf_t *cmcf; | |
283 | |
284 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); | |
285 | |
573 | 286 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
287 if (h == NULL) { | |
288 return NGX_ERROR; | |
289 } | |
290 | |
291 *h = ngx_http_rewrite_handler; | |
292 | |
509 | 293 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
294 if (h == NULL) { | |
295 return NGX_ERROR; | |
296 } | |
297 | |
298 *h = ngx_http_rewrite_handler; | |
299 | |
300 return NGX_OK; | |
577 | 301 } |
509 | 302 |
303 | |
487 | 304 static char * |
305 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 306 { |
577 | 307 ngx_http_rewrite_loc_conf_t *lcf = conf; |
308 | |
509 | 309 ngx_str_t *value, err; |
310 ngx_int_t n; | |
311 ngx_uint_t last; | |
312 ngx_http_script_code_pt *code; | |
313 ngx_http_script_compile_t sc; | |
314 ngx_http_script_regex_code_t *regex; | |
315 ngx_http_script_regex_end_code_t *regex_end; | |
316 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
485 | 317 |
509 | 318 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
319 sizeof(ngx_http_script_regex_code_t)); | |
485 | 320 if (regex == NULL) { |
321 return NGX_CONF_ERROR; | |
322 } | |
216
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323 |
509 | 324 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
325 | |
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326 value = cf->args->elts; |
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327 |
485 | 328 err.len = NGX_MAX_CONF_ERRSTR; |
329 err.data = errstr; | |
330 | |
331 /* TODO: NGX_REGEX_CASELESS */ | |
332 | |
333 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
334 | |
335 if (regex->regex == NULL) { | |
336 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
337 return NGX_CONF_ERROR; | |
338 } | |
339 | |
509 | 340 regex->code = ngx_http_script_regex_start_code; |
485 | 341 regex->uri = 1; |
342 regex->name = value[1]; | |
216
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343 |
509 | 344 if (value[2].data[value[2].len - 1] == '?') { |
345 | |
346 /* the last "?" drops the original arguments */ | |
347 value[2].len--; | |
348 | |
349 } else { | |
350 regex->add_args = 1; | |
351 } | |
352 | |
485 | 353 last = 0; |
354 | |
355 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) { | |
356 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
357 regex->redirect = 1; | |
358 last = 1; | |
359 } | |
360 | |
361 if (cf->args->nelts == 4) { | |
362 if (ngx_strcmp(value[3].data, "last") == 0) { | |
363 last = 1; | |
216
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364 |
487 | 365 } else if (ngx_strcmp(value[3].data, "break") == 0) { |
366 regex->break_cycle = 1; | |
367 last = 1; | |
368 | |
485 | 369 } else if (ngx_strcmp(value[3].data, "redirect") == 0) { |
370 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
371 regex->redirect = 1; | |
372 last = 1; | |
326
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373 |
485 | 374 } else if (ngx_strcmp(value[3].data, "permanent") == 0) { |
375 regex->status = NGX_HTTP_MOVED_PERMANENTLY; | |
376 regex->redirect = 1; | |
377 last = 1; | |
326
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378 |
485 | 379 } else { |
326
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380 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
461 | 381 "invalid parameter \"%V\"", &value[3]); |
326
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382 return NGX_CONF_ERROR; |
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383 } |
485 | 384 } |
326
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385 |
509 | 386 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
485 | 387 |
509 | 388 sc.cf = cf; |
389 sc.source = &value[2]; | |
390 sc.lengths = ®ex->lengths; | |
391 sc.values = &lcf->codes; | |
392 sc.variables = ngx_http_script_variables_count(&value[2]); | |
393 sc.main = regex; | |
394 sc.complete_lengths = 1; | |
395 sc.compile_args = !regex->redirect; | |
485 | 396 |
509 | 397 if (ngx_http_script_compile(&sc) != NGX_OK) { |
398 return NGX_CONF_ERROR; | |
399 } | |
485 | 400 |
509 | 401 regex = sc.main; |
216
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402 |
509 | 403 regex->ncaptures = sc.ncaptures; |
404 regex->size = sc.size; | |
405 regex->args = sc.args; | |
216
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406 |
509 | 407 if (sc.variables == 0) { |
408 regex->lengths = NULL; | |
485 | 409 } |
410 | |
411 n = ngx_regex_capture_count(regex->regex); | |
412 | |
501 | 413 if (n < 0) { |
414 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
415 ngx_regex_capture_count_n " failed for " | |
416 "pattern \"%V\"", &value[1]); | |
417 return NGX_CONF_ERROR; | |
418 } | |
419 | |
420 if (regex->ncaptures > (ngx_uint_t) n) { | |
485 | 421 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
422 "pattern \"%V\" has less captures " | |
423 "than referrenced in substitution \"%V\"", | |
424 &value[1], &value[2]); | |
425 return NGX_CONF_ERROR; | |
426 } | |
427 | |
501 | 428 if (regex->ncaptures < (ngx_uint_t) n) { |
429 regex->ncaptures = (ngx_uint_t) n; | |
485 | 430 } |
481 | 431 |
485 | 432 if (regex->ncaptures) { |
433 regex->ncaptures = (regex->ncaptures + 1) * 3; | |
434 | |
515 | 435 if (lcf->captures < regex->ncaptures) { |
436 lcf->captures = regex->ncaptures; | |
437 } | |
509 | 438 } |
439 | |
440 regex_end = ngx_http_script_add_code(lcf->codes, | |
441 sizeof(ngx_http_script_regex_end_code_t), | |
442 ®ex); | |
485 | 443 if (regex_end == NULL) { |
444 return NGX_CONF_ERROR; | |
445 } | |
446 | |
509 | 447 regex_end->code = ngx_http_script_regex_end_code; |
485 | 448 regex_end->uri = regex->uri; |
449 regex_end->args = regex->args; | |
509 | 450 regex_end->add_args = regex->add_args; |
485 | 451 regex_end->redirect = regex->redirect; |
452 | |
453 if (last) { | |
517 | 454 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
485 | 455 if (code == NULL) { |
456 return NGX_CONF_ERROR; | |
218
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457 } |
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458 |
485 | 459 *code = (uintptr_t) NULL; |
460 } | |
461 | |
462 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
463 - (u_char *) regex; | |
464 | |
465 return NGX_CONF_OK; | |
466 } | |
467 | |
468 | |
487 | 469 static char * |
470 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 471 { |
577 | 472 ngx_http_rewrite_loc_conf_t *lcf = conf; |
216
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473 |
509 | 474 ngx_str_t *value; |
475 ngx_http_script_return_code_t *ret; | |
485 | 476 |
509 | 477 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
478 sizeof(ngx_http_script_return_code_t)); | |
485 | 479 if (ret == NULL) { |
480 return NGX_CONF_ERROR; | |
481 } | |
482 | |
483 value = cf->args->elts; | |
484 | |
509 | 485 ret->code = ngx_http_script_return_code; |
485 | 486 ret->null = (uintptr_t) NULL; |
487 | |
488 ret->status = ngx_atoi(value[1].data, value[1].len); | |
489 | |
490 if (ret->status == (uintptr_t) NGX_ERROR) { | |
491 return NGX_CONF_ERROR; | |
216
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492 } |
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493 |
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494 return NGX_CONF_OK; |
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495 } |
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496 |
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497 |
487 | 498 static char * |
527 | 499 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
500 { | |
501 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
502 | |
503 ngx_http_script_code_pt *code; | |
504 | |
505 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
506 if (code == NULL) { | |
507 return NGX_CONF_ERROR; | |
508 } | |
509 | |
510 *code = ngx_http_script_break_code; | |
511 | |
512 return NGX_CONF_OK; | |
513 } | |
514 | |
515 | |
516 static char * | |
487 | 517 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
437
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518 { |
577 | 519 ngx_http_rewrite_loc_conf_t *lcf = conf; |
485 | 520 |
521 void *mconf; | |
522 char *rv; | |
523 u_char *elts; | |
524 ngx_uint_t i; | |
525 ngx_conf_t save; | |
526 ngx_http_module_t *module; | |
527 ngx_http_conf_ctx_t *ctx, *pctx; | |
528 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp; | |
509 | 529 ngx_http_script_if_code_t *if_code; |
485 | 530 ngx_http_rewrite_loc_conf_t *nlcf; |
531 | |
501 | 532 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
533 if (ctx == NULL) { | |
485 | 534 return NGX_CONF_ERROR; |
535 } | |
536 | |
537 pctx = cf->ctx; | |
538 ctx->main_conf = pctx->main_conf; | |
577 | 539 ctx->srv_conf = pctx->srv_conf; |
485 | 540 |
541 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
542 if (ctx->loc_conf == NULL) { | |
543 return NGX_CONF_ERROR; | |
544 } | |
545 | |
546 for (i = 0; ngx_modules[i]; i++) { | |
547 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
548 continue; | |
549 } | |
550 | |
551 module = ngx_modules[i]->ctx; | |
577 | 552 |
485 | 553 if (module->create_loc_conf) { |
554 | |
501 | 555 mconf = module->create_loc_conf(cf); |
556 if (mconf == NULL) { | |
485 | 557 return NGX_CONF_ERROR; |
558 } | |
559 | |
560 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
561 } | |
562 } | |
563 | |
564 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
565 | |
566 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
567 clcf->loc_conf = ctx->loc_conf; | |
568 clcf->name = pclcf->name; | |
569 clcf->noname = 1; | |
570 | |
571 if (pclcf->locations.elts == NULL) { | |
572 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *)) | |
555 | 573 == NGX_ERROR) |
485 | 574 { |
575 return NGX_CONF_ERROR; | |
576 } | |
577 } | |
578 | |
501 | 579 clcfp = ngx_array_push(&pclcf->locations); |
580 if (clcfp == NULL) { | |
485 | 581 return NGX_CONF_ERROR; |
582 } | |
583 | |
584 *clcfp = clcf; | |
585 | |
586 | |
501 | 587 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
485 | 588 return NGX_CONF_ERROR; |
589 } | |
590 | |
509 | 591 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
485 | 592 if (if_code == NULL) { |
593 return NULL; | |
594 } | |
595 | |
509 | 596 if_code->code = ngx_http_script_if_code; |
485 | 597 |
598 elts = lcf->codes->elts; | |
599 | |
600 | |
631 | 601 /* the inner directives must be compiled to the same code array */ |
485 | 602 |
603 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
604 nlcf->codes = lcf->codes; | |
605 | |
606 | |
607 save = *cf; | |
608 cf->ctx = ctx; | |
609 | |
610 if (pclcf->name.len == 0) { | |
611 if_code->loc_conf = NULL; | |
612 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
613 | |
614 } else { | |
615 if_code->loc_conf = ctx->loc_conf; | |
616 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
617 } | |
618 | |
619 rv = ngx_conf_parse(cf, NULL); | |
620 | |
621 *cf = save; | |
622 | |
623 if (rv != NGX_CONF_OK) { | |
624 return rv; | |
625 } | |
626 | |
627 | |
517 | 628 if (lcf->captures < nlcf->captures) { |
629 lcf->captures = nlcf->captures; | |
630 } | |
631 | |
632 | |
485 | 633 if (elts != lcf->codes->elts) { |
509 | 634 if_code = (ngx_http_script_if_code_t *) |
485 | 635 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
636 } | |
637 | |
638 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
639 - (u_char *) if_code; | |
437
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640 |
555 | 641 /* the code array belong to parent block */ |
642 | |
643 nlcf->codes = NULL; | |
644 | |
437
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645 return NGX_CONF_OK; |
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646 } |
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647 |
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648 |
487 | 649 static char * |
501 | 650 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
651 { | |
631 | 652 u_char *p; |
653 size_t len; | |
509 | 654 ngx_str_t *value, err; |
515 | 655 ngx_uint_t cur, last, n; |
577 | 656 ngx_http_script_code_pt *code; |
631 | 657 ngx_http_script_file_code_t *fop; |
509 | 658 ngx_http_script_regex_code_t *regex; |
659 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
501 | 660 |
661 value = cf->args->elts; | |
662 last = cf->args->nelts - 1; | |
663 | |
664 if (value[1].len < 1 || value[1].data[0] != '(') { | |
665 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
666 "invalid condition \"%V\"", &value[1]); | |
667 return NGX_CONF_ERROR; | |
668 } | |
669 | |
670 if (value[1].len == 1) { | |
671 cur = 2; | |
672 | |
673 } else { | |
674 cur = 1; | |
675 value[1].len--; | |
676 value[1].data++; | |
677 } | |
678 | |
679 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
680 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
681 "invalid condition \"%V\"", &value[last]); | |
682 return NGX_CONF_ERROR; | |
683 } | |
684 | |
685 if (value[last].len == 1) { | |
686 last--; | |
687 | |
688 } else { | |
689 value[last].len--; | |
690 value[last].data[value[last].len] = '\0'; | |
691 } | |
692 | |
631 | 693 len = value[cur].len; |
694 p = value[cur].data; | |
695 | |
696 if (len > 1 && p[0] == '$') { | |
501 | 697 |
698 if (cur != last && cur + 2 != last) { | |
699 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
631 | 700 "invalid condition \"%V\"", &value[cur]); |
501 | 701 return NGX_CONF_ERROR; |
702 } | |
703 | |
577 | 704 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { |
501 | 705 return NGX_CONF_ERROR; |
706 } | |
707 | |
708 if (cur == last) { | |
709 return NGX_CONF_OK; | |
710 } | |
711 | |
712 cur++; | |
713 | |
631 | 714 len = value[cur].len; |
715 p = value[cur].data; | |
716 | |
717 if (len == 1 && p[0] == '=') { | |
577 | 718 |
719 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
720 return NGX_CONF_ERROR; | |
721 } | |
722 | |
723 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
724 sizeof(uintptr_t)); | |
725 if (code == NULL) { | |
726 return NGX_CONF_ERROR; | |
727 } | |
728 | |
729 *code = ngx_http_script_equal_code; | |
730 | |
731 return NGX_CONF_OK; | |
501 | 732 } |
733 | |
631 | 734 if (len == 2 && p[0] == '!' && p[1] == '=') { |
735 | |
577 | 736 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { |
737 return NGX_CONF_ERROR; | |
738 } | |
739 | |
740 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
741 sizeof(uintptr_t)); | |
742 if (code == NULL) { | |
743 return NGX_CONF_ERROR; | |
744 } | |
745 | |
746 *code = ngx_http_script_not_equal_code; | |
747 return NGX_CONF_OK; | |
501 | 748 } |
749 | |
631 | 750 if ((len == 1 && p[0] == '~') |
751 || (len == 2 && p[0] == '~' && p[1] == '*') | |
752 || (len == 2 && p[0] == '!' && p[1] == '~') | |
753 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*')) | |
577 | 754 { |
755 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
756 sizeof(ngx_http_script_regex_code_t)); | |
757 if (regex == NULL) { | |
758 return NGX_CONF_ERROR; | |
759 } | |
509 | 760 |
577 | 761 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
762 | |
763 err.len = NGX_MAX_CONF_ERRSTR; | |
764 err.data = errstr; | |
765 | |
766 regex->regex = ngx_regex_compile(&value[last], | |
631 | 767 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0, |
768 cf->pool, &err); | |
501 | 769 |
577 | 770 if (regex->regex == NULL) { |
771 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
772 return NGX_CONF_ERROR; | |
773 } | |
774 | |
775 regex->code = ngx_http_script_regex_start_code; | |
776 regex->next = sizeof(ngx_http_script_regex_code_t); | |
777 regex->test = 1; | |
631 | 778 if (p[0] == '!') { |
779 regex->negative_test = 1; | |
780 } | |
577 | 781 regex->name = value[last]; |
501 | 782 |
577 | 783 n = ngx_regex_capture_count(regex->regex); |
784 | |
785 if (n) { | |
786 regex->ncaptures = (n + 1) * 3; | |
787 | |
788 if (lcf->captures < regex->ncaptures) { | |
789 lcf->captures = regex->ncaptures; | |
790 } | |
791 } | |
792 | |
793 return NGX_CONF_OK; | |
501 | 794 } |
795 | |
577 | 796 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
797 "unexpected \"%V\" in condition", &value[cur]); | |
798 return NGX_CONF_ERROR; | |
631 | 799 |
800 } else if ((len == 2 && p[0] == '-') | |
801 || (len == 3 && p[0] == '!' && p[1] == '-')) | |
802 { | |
803 if (cur + 1 != last) { | |
804 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
805 "invalid condition \"%V\"", &value[cur]); | |
806 return NGX_CONF_ERROR; | |
807 } | |
808 | |
809 value[last].data[value[last].len] = '\0'; | |
810 value[last].len++; | |
811 | |
812 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
813 return NGX_CONF_ERROR; | |
814 } | |
815 | |
816 fop = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
817 sizeof(ngx_http_script_file_code_t)); | |
818 if (fop == NULL) { | |
819 return NGX_CONF_ERROR; | |
820 } | |
821 | |
822 fop->code = ngx_http_script_file_code; | |
823 | |
824 if (p[1] == 'f') { | |
825 fop->op = ngx_http_script_file_plain; | |
826 return NGX_CONF_OK; | |
827 } | |
828 | |
829 if (p[0] == '!') { | |
830 if (p[2] == 'f') { | |
831 fop->op = ngx_http_script_file_not_plain; | |
832 return NGX_CONF_OK; | |
833 } | |
834 } | |
835 | |
836 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
837 "invalid condition \"%V\"", &value[cur]); | |
838 return NGX_CONF_ERROR; | |
501 | 839 } |
840 | |
841 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
842 "invalid condition \"%V\"", &value[cur]); | |
843 | |
844 return NGX_CONF_ERROR; | |
845 } | |
846 | |
847 | |
848 static char * | |
849 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
850 ngx_str_t *value) | |
851 { | |
509 | 852 ngx_int_t index; |
853 ngx_http_script_var_code_t *var_code; | |
501 | 854 |
855 value->len--; | |
856 value->data++; | |
857 | |
577 | 858 index = ngx_http_get_variable_index(cf, value); |
501 | 859 |
577 | 860 if (index == NGX_ERROR) { |
861 return NGX_CONF_ERROR; | |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
862 } |
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
863 |
577 | 864 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
865 sizeof(ngx_http_script_var_code_t)); | |
866 if (var_code == NULL) { | |
867 return NGX_CONF_ERROR; | |
485 | 868 } |
869 | |
577 | 870 var_code->code = ngx_http_script_var_code; |
871 var_code->index = index; | |
485 | 872 |
873 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
|
874 } |
485 | 875 |
876 | |
501 | 877 static char * |
878 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
879 { | |
577 | 880 ngx_http_rewrite_loc_conf_t *lcf = conf; |
501 | 881 |
577 | 882 ngx_int_t index; |
883 ngx_str_t *value; | |
884 ngx_http_variable_t *v; | |
885 ngx_http_script_var_code_t *var; | |
501 | 886 |
887 value = cf->args->elts; | |
888 | |
889 if (value[1].data[0] != '$') { | |
890 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
891 "invalid variable name \"%V\"", &value[1]); | |
892 return NGX_CONF_ERROR; | |
893 } | |
894 | |
895 value[1].len--; | |
896 value[1].data++; | |
897 | |
509 | 898 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGABLE); |
501 | 899 if (v == NULL) { |
900 return NGX_CONF_ERROR; | |
901 } | |
902 | |
509 | 903 index = ngx_http_get_variable_index(cf, &value[1]); |
904 if (index == NGX_ERROR) { | |
905 return NGX_CONF_ERROR; | |
906 } | |
501 | 907 |
555 | 908 if (v->handler == NULL) { |
909 v->handler = ngx_http_rewrite_var; | |
910 v->data = index; | |
911 } | |
509 | 912 |
577 | 913 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { |
914 return NGX_CONF_ERROR; | |
515 | 915 } |
501 | 916 |
509 | 917 var = ngx_http_script_start_code(cf->pool, &lcf->codes, |
918 sizeof(ngx_http_script_var_code_t)); | |
501 | 919 if (var == NULL) { |
920 return NGX_CONF_ERROR; | |
921 } | |
922 | |
509 | 923 var->code = ngx_http_script_set_var_code; |
924 var->index = (uintptr_t) index; | |
501 | 925 |
926 return NGX_CONF_OK; | |
927 } | |
577 | 928 |
929 | |
930 static char * | |
931 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
932 ngx_str_t *value) | |
933 { | |
934 ngx_int_t n; | |
935 ngx_http_script_compile_t sc; | |
936 ngx_http_script_value_code_t *val; | |
937 ngx_http_script_complex_value_code_t *complex; | |
938 | |
939 n = ngx_http_script_variables_count(value); | |
940 | |
941 if (n == 0) { | |
942 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
943 sizeof(ngx_http_script_value_code_t)); | |
944 if (val == NULL) { | |
945 return NGX_CONF_ERROR; | |
946 } | |
947 | |
948 n = ngx_atoi(value->data, value->len); | |
949 | |
950 if (n == NGX_ERROR) { | |
951 n = 0; | |
952 } | |
953 | |
954 val->code = ngx_http_script_value_code; | |
955 val->value = (uintptr_t) n; | |
956 val->text_len = (uintptr_t) value->len; | |
957 val->text_data = (uintptr_t) value->data; | |
958 | |
959 return NGX_CONF_OK; | |
960 } | |
961 | |
962 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
963 sizeof(ngx_http_script_complex_value_code_t)); | |
964 if (complex == NULL) { | |
965 return NGX_CONF_ERROR; | |
966 } | |
967 | |
968 complex->code = ngx_http_script_complex_value_code; | |
969 complex->lengths = NULL; | |
970 | |
971 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
972 | |
973 sc.cf = cf; | |
974 sc.source = value; | |
975 sc.lengths = &complex->lengths; | |
976 sc.values = &lcf->codes; | |
977 sc.variables = n; | |
978 sc.complete_lengths = 1; | |
979 | |
980 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
981 return NGX_CONF_ERROR; | |
982 } | |
983 | |
984 return NGX_CONF_OK; | |
985 } |