Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 3593:a79d2ad7a2d8 stable-0.7
merge r3487, r3525:
rewrite fixes:
*) escape ampersand in argument while rewrite
*) autodetect redirect if URI is rewritten to a string starting with $scheme
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 07 Jun 2010 11:51:37 +0000 |
parents | d51b734b4540 |
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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 stack_size; |
485 | 16 |
577 | 17 ngx_flag_t log; |
635 | 18 ngx_flag_t uninitialized_variable_warn; |
485 | 19 } ngx_http_rewrite_loc_conf_t; |
216
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20 |
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21 |
485 | 22 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf); |
23 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, | |
487 | 24 void *parent, void *child); |
681 | 25 static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf); |
485 | 26 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
27 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, | |
487 | 28 void *conf); |
527 | 29 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, |
30 void *conf); | |
485 | 31 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, |
487 | 32 void *conf); |
501 | 33 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, |
34 ngx_http_rewrite_loc_conf_t *lcf); | |
35 static char *ngx_http_rewrite_variable(ngx_conf_t *cf, | |
36 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
509 | 37 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, |
501 | 38 void *conf); |
577 | 39 static char * ngx_http_rewrite_value(ngx_conf_t *cf, |
40 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
437
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41 |
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42 |
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43 static ngx_command_t ngx_http_rewrite_commands[] = { |
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44 |
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45 { ngx_string("rewrite"), |
485 | 46 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |
47 |NGX_CONF_TAKE23, | |
48 ngx_http_rewrite, | |
49 NGX_HTTP_LOC_CONF_OFFSET, | |
50 0, | |
51 NULL }, | |
52 | |
53 { ngx_string("return"), | |
54 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
55 |NGX_CONF_TAKE1, | |
56 ngx_http_rewrite_return, | |
57 NGX_HTTP_LOC_CONF_OFFSET, | |
216
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58 0, |
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59 NULL }, |
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60 |
527 | 61 { ngx_string("break"), |
62 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
63 |NGX_CONF_NOARGS, | |
64 ngx_http_rewrite_break, | |
65 NGX_HTTP_LOC_CONF_OFFSET, | |
66 0, | |
67 NULL }, | |
68 | |
485 | 69 { ngx_string("if"), |
70 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE, | |
71 ngx_http_rewrite_if, | |
437
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72 NGX_HTTP_LOC_CONF_OFFSET, |
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73 0, |
485 | 74 NULL }, |
75 | |
501 | 76 { ngx_string("set"), |
77 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
78 |NGX_CONF_TAKE2, | |
79 ngx_http_rewrite_set, | |
80 NGX_HTTP_LOC_CONF_OFFSET, | |
81 0, | |
82 NULL }, | |
83 | |
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84 { ngx_string("rewrite_log"), |
635 | 85 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF |
86 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
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87 ngx_conf_set_flag_slot, |
485 | 88 NGX_HTTP_LOC_CONF_OFFSET, |
89 offsetof(ngx_http_rewrite_loc_conf_t, log), | |
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90 NULL }, |
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91 |
635 | 92 { ngx_string("uninitialized_variable_warn"), |
93 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF | |
94 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
95 ngx_conf_set_flag_slot, | |
96 NGX_HTTP_LOC_CONF_OFFSET, | |
97 offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn), | |
98 NULL }, | |
99 | |
216
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100 ngx_null_command |
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101 }; |
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102 |
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103 |
667 | 104 static ngx_http_module_t ngx_http_rewrite_module_ctx = { |
509 | 105 NULL, /* preconfiguration */ |
681 | 106 ngx_http_rewrite_init, /* postconfiguration */ |
216
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107 |
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108 NULL, /* create main configuration */ |
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109 NULL, /* init main configuration */ |
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110 |
485 | 111 NULL, /* create server configuration */ |
112 NULL, /* merge server configuration */ | |
216
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113 |
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114 ngx_http_rewrite_create_loc_conf, /* create location configration */ |
485 | 115 ngx_http_rewrite_merge_loc_conf /* merge location configration */ |
216
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116 }; |
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117 |
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118 |
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119 ngx_module_t ngx_http_rewrite_module = { |
509 | 120 NGX_MODULE_V1, |
577 | 121 &ngx_http_rewrite_module_ctx, /* module context */ |
216
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122 ngx_http_rewrite_commands, /* module directives */ |
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123 NGX_HTTP_MODULE, /* module type */ |
541 | 124 NULL, /* init master */ |
681 | 125 NULL, /* init module */ |
541 | 126 NULL, /* init process */ |
127 NULL, /* init thread */ | |
128 NULL, /* exit thread */ | |
129 NULL, /* exit process */ | |
130 NULL, /* exit master */ | |
131 NGX_MODULE_V1_PADDING | |
216
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132 }; |
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133 |
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134 |
487 | 135 static ngx_int_t |
136 ngx_http_rewrite_handler(ngx_http_request_t *r) | |
216
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137 { |
509 | 138 ngx_http_script_code_pt code; |
139 ngx_http_script_engine_t *e; | |
635 | 140 ngx_http_rewrite_loc_conf_t *rlcf; |
216
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141 |
635 | 142 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); |
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143 |
635 | 144 if (rlcf->codes == NULL) { |
485 | 145 return NGX_DECLINED; |
146 } | |
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147 |
509 | 148 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t)); |
501 | 149 if (e == NULL) { |
485 | 150 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
151 } | |
216
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152 |
509 | 153 e->sp = ngx_pcalloc(r->pool, |
635 | 154 rlcf->stack_size * sizeof(ngx_http_variable_value_t)); |
485 | 155 if (e->sp == NULL) { |
156 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
157 } | |
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158 |
635 | 159 e->ip = rlcf->codes->elts; |
509 | 160 e->request = r; |
485 | 161 e->quote = 1; |
635 | 162 e->log = rlcf->log; |
485 | 163 e->status = NGX_DECLINED; |
164 | |
165 while (*(uintptr_t *) e->ip) { | |
509 | 166 code = *(ngx_http_script_code_pt *) e->ip; |
485 | 167 code(e); |
168 } | |
169 | |
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170 if (e->status == NGX_DECLINED) { |
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171 return NGX_DECLINED; |
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172 } |
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173 |
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174 if (r->err_status == 0) { |
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175 return e->status; |
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176 } |
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177 |
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178 return r->err_status; |
485 | 179 } |
180 | |
181 | |
573 | 182 static ngx_int_t |
183 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
184 uintptr_t data) | |
501 | 185 { |
635 | 186 ngx_http_variable_t *var; |
187 ngx_http_core_main_conf_t *cmcf; | |
188 ngx_http_rewrite_loc_conf_t *rlcf; | |
189 | |
190 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); | |
191 | |
192 if (rlcf->uninitialized_variable_warn == 0) { | |
193 *v = ngx_http_variable_null_value; | |
194 return NGX_OK; | |
195 } | |
501 | 196 |
197 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
198 | |
199 var = cmcf->variables.elts; | |
200 | |
201 /* | |
202 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
519 | 203 * and they should be handled by ngx_http_get_indexed_variable(), |
501 | 204 * so the handler is called only if the variable is not initialized |
205 */ | |
206 | |
635 | 207 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, |
501 | 208 "using uninitialized \"%V\" variable", &var[data].name); |
209 | |
577 | 210 *v = ngx_http_variable_null_value; |
573 | 211 |
212 return NGX_OK; | |
501 | 213 } |
214 | |
215 | |
487 | 216 static void * |
217 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
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218 { |
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219 ngx_http_rewrite_loc_conf_t *conf; |
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220 |
501 | 221 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
222 if (conf == NULL) { | |
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223 return NULL; |
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224 } |
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225 |
485 | 226 conf->stack_size = NGX_CONF_UNSET_UINT; |
227 conf->log = NGX_CONF_UNSET; | |
635 | 228 conf->uninitialized_variable_warn = NGX_CONF_UNSET; |
485 | 229 |
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230 return conf; |
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231 } |
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232 |
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233 |
487 | 234 static char * |
235 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
216
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236 { |
485 | 237 ngx_http_rewrite_loc_conf_t *prev = parent; |
238 ngx_http_rewrite_loc_conf_t *conf = child; | |
239 | |
509 | 240 uintptr_t *code; |
485 | 241 |
242 ngx_conf_merge_value(conf->log, prev->log, 0); | |
635 | 243 ngx_conf_merge_value(conf->uninitialized_variable_warn, |
244 prev->uninitialized_variable_warn, 1); | |
663 | 245 ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10); |
485 | 246 |
247 if (conf->codes == NULL) { | |
248 return NGX_CONF_OK; | |
249 } | |
250 | |
251 if (conf->codes == prev->codes) { | |
252 return NGX_CONF_OK; | |
253 } | |
254 | |
501 | 255 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
256 if (code == NULL) { | |
216
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257 return NGX_CONF_ERROR; |
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258 } |
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259 |
485 | 260 *code = (uintptr_t) NULL; |
261 | |
262 return NGX_CONF_OK; | |
263 } | |
264 | |
216
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265 |
509 | 266 static ngx_int_t |
681 | 267 ngx_http_rewrite_init(ngx_conf_t *cf) |
577 | 268 { |
509 | 269 ngx_http_handler_pt *h; |
270 ngx_http_core_main_conf_t *cmcf; | |
271 | |
681 | 272 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
509 | 273 |
573 | 274 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
275 if (h == NULL) { | |
276 return NGX_ERROR; | |
277 } | |
278 | |
279 *h = ngx_http_rewrite_handler; | |
280 | |
509 | 281 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
282 if (h == NULL) { | |
283 return NGX_ERROR; | |
284 } | |
285 | |
286 *h = ngx_http_rewrite_handler; | |
287 | |
288 return NGX_OK; | |
577 | 289 } |
509 | 290 |
291 | |
487 | 292 static char * |
293 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 294 { |
577 | 295 ngx_http_rewrite_loc_conf_t *lcf = conf; |
296 | |
509 | 297 ngx_str_t *value, err; |
298 ngx_int_t n; | |
299 ngx_uint_t last; | |
300 ngx_http_script_code_pt *code; | |
301 ngx_http_script_compile_t sc; | |
302 ngx_http_script_regex_code_t *regex; | |
303 ngx_http_script_regex_end_code_t *regex_end; | |
304 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
485 | 305 |
509 | 306 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
307 sizeof(ngx_http_script_regex_code_t)); | |
485 | 308 if (regex == NULL) { |
309 return NGX_CONF_ERROR; | |
310 } | |
216
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311 |
509 | 312 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
313 | |
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314 value = cf->args->elts; |
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315 |
485 | 316 err.len = NGX_MAX_CONF_ERRSTR; |
317 err.data = errstr; | |
318 | |
319 /* TODO: NGX_REGEX_CASELESS */ | |
320 | |
321 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
322 | |
323 if (regex->regex == NULL) { | |
324 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
325 return NGX_CONF_ERROR; | |
326 } | |
327 | |
509 | 328 regex->code = ngx_http_script_regex_start_code; |
485 | 329 regex->uri = 1; |
330 regex->name = value[1]; | |
216
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331 |
509 | 332 if (value[2].data[value[2].len - 1] == '?') { |
333 | |
334 /* the last "?" drops the original arguments */ | |
335 value[2].len--; | |
336 | |
337 } else { | |
338 regex->add_args = 1; | |
339 } | |
340 | |
485 | 341 last = 0; |
342 | |
3593 | 343 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0 |
344 || ngx_strncmp(value[2].data, "https://", sizeof("https://") - 1) == 0 | |
345 || ngx_strncmp(value[2].data, "$scheme", sizeof("$scheme") - 1) == 0) | |
346 { | |
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347 regex->status = NGX_HTTP_MOVED_TEMPORARILY; |
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348 regex->redirect = 1; |
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349 last = 1; |
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350 } |
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351 |
485 | 352 if (cf->args->nelts == 4) { |
353 if (ngx_strcmp(value[3].data, "last") == 0) { | |
354 last = 1; | |
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355 |
487 | 356 } else if (ngx_strcmp(value[3].data, "break") == 0) { |
357 regex->break_cycle = 1; | |
358 last = 1; | |
359 | |
485 | 360 } else if (ngx_strcmp(value[3].data, "redirect") == 0) { |
361 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
362 regex->redirect = 1; | |
363 last = 1; | |
326
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364 |
485 | 365 } else if (ngx_strcmp(value[3].data, "permanent") == 0) { |
366 regex->status = NGX_HTTP_MOVED_PERMANENTLY; | |
367 regex->redirect = 1; | |
368 last = 1; | |
326
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369 |
485 | 370 } else { |
326
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371 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
461 | 372 "invalid parameter \"%V\"", &value[3]); |
326
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373 return NGX_CONF_ERROR; |
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374 } |
485 | 375 } |
326
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376 |
509 | 377 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
485 | 378 |
509 | 379 sc.cf = cf; |
380 sc.source = &value[2]; | |
381 sc.lengths = ®ex->lengths; | |
382 sc.values = &lcf->codes; | |
383 sc.variables = ngx_http_script_variables_count(&value[2]); | |
384 sc.main = regex; | |
385 sc.complete_lengths = 1; | |
386 sc.compile_args = !regex->redirect; | |
485 | 387 |
509 | 388 if (ngx_http_script_compile(&sc) != NGX_OK) { |
389 return NGX_CONF_ERROR; | |
390 } | |
485 | 391 |
509 | 392 regex = sc.main; |
216
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393 |
509 | 394 regex->ncaptures = sc.ncaptures; |
395 regex->size = sc.size; | |
396 regex->args = sc.args; | |
216
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397 |
641 | 398 if (sc.variables == 0 && !sc.dup_capture) { |
509 | 399 regex->lengths = NULL; |
485 | 400 } |
401 | |
402 n = ngx_regex_capture_count(regex->regex); | |
403 | |
501 | 404 if (n < 0) { |
405 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
406 ngx_regex_capture_count_n " failed for " | |
407 "pattern \"%V\"", &value[1]); | |
408 return NGX_CONF_ERROR; | |
409 } | |
410 | |
411 if (regex->ncaptures > (ngx_uint_t) n) { | |
485 | 412 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
413 "pattern \"%V\" has less captures " | |
414 "than referrenced in substitution \"%V\"", | |
415 &value[1], &value[2]); | |
416 return NGX_CONF_ERROR; | |
417 } | |
418 | |
501 | 419 if (regex->ncaptures < (ngx_uint_t) n) { |
420 regex->ncaptures = (ngx_uint_t) n; | |
485 | 421 } |
481 | 422 |
485 | 423 if (regex->ncaptures) { |
424 regex->ncaptures = (regex->ncaptures + 1) * 3; | |
509 | 425 } |
426 | |
427 regex_end = ngx_http_script_add_code(lcf->codes, | |
428 sizeof(ngx_http_script_regex_end_code_t), | |
429 ®ex); | |
485 | 430 if (regex_end == NULL) { |
431 return NGX_CONF_ERROR; | |
432 } | |
433 | |
509 | 434 regex_end->code = ngx_http_script_regex_end_code; |
485 | 435 regex_end->uri = regex->uri; |
436 regex_end->args = regex->args; | |
509 | 437 regex_end->add_args = regex->add_args; |
485 | 438 regex_end->redirect = regex->redirect; |
439 | |
440 if (last) { | |
517 | 441 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
485 | 442 if (code == NULL) { |
443 return NGX_CONF_ERROR; | |
218
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444 } |
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445 |
3253 | 446 *code = NULL; |
485 | 447 } |
448 | |
449 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
450 - (u_char *) regex; | |
451 | |
452 return NGX_CONF_OK; | |
453 } | |
454 | |
455 | |
487 | 456 static char * |
457 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 458 { |
577 | 459 ngx_http_rewrite_loc_conf_t *lcf = conf; |
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460 |
509 | 461 ngx_str_t *value; |
462 ngx_http_script_return_code_t *ret; | |
485 | 463 |
509 | 464 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
465 sizeof(ngx_http_script_return_code_t)); | |
485 | 466 if (ret == NULL) { |
467 return NGX_CONF_ERROR; | |
468 } | |
469 | |
470 value = cf->args->elts; | |
471 | |
509 | 472 ret->code = ngx_http_script_return_code; |
485 | 473 ret->null = (uintptr_t) NULL; |
474 | |
475 ret->status = ngx_atoi(value[1].data, value[1].len); | |
476 | |
477 if (ret->status == (uintptr_t) NGX_ERROR) { | |
478 return NGX_CONF_ERROR; | |
216
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479 } |
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480 |
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481 return NGX_CONF_OK; |
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482 } |
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483 |
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484 |
487 | 485 static char * |
527 | 486 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
487 { | |
488 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
489 | |
490 ngx_http_script_code_pt *code; | |
491 | |
492 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
493 if (code == NULL) { | |
494 return NGX_CONF_ERROR; | |
495 } | |
496 | |
497 *code = ngx_http_script_break_code; | |
498 | |
499 return NGX_CONF_OK; | |
500 } | |
501 | |
502 | |
503 static char * | |
487 | 504 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
437
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505 { |
577 | 506 ngx_http_rewrite_loc_conf_t *lcf = conf; |
485 | 507 |
508 void *mconf; | |
509 char *rv; | |
510 u_char *elts; | |
511 ngx_uint_t i; | |
512 ngx_conf_t save; | |
513 ngx_http_module_t *module; | |
514 ngx_http_conf_ctx_t *ctx, *pctx; | |
2027 | 515 ngx_http_core_loc_conf_t *clcf, *pclcf; |
509 | 516 ngx_http_script_if_code_t *if_code; |
485 | 517 ngx_http_rewrite_loc_conf_t *nlcf; |
518 | |
501 | 519 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
520 if (ctx == NULL) { | |
485 | 521 return NGX_CONF_ERROR; |
522 } | |
523 | |
524 pctx = cf->ctx; | |
525 ctx->main_conf = pctx->main_conf; | |
577 | 526 ctx->srv_conf = pctx->srv_conf; |
485 | 527 |
528 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
529 if (ctx->loc_conf == NULL) { | |
530 return NGX_CONF_ERROR; | |
531 } | |
532 | |
533 for (i = 0; ngx_modules[i]; i++) { | |
534 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
535 continue; | |
536 } | |
537 | |
538 module = ngx_modules[i]->ctx; | |
577 | 539 |
485 | 540 if (module->create_loc_conf) { |
541 | |
501 | 542 mconf = module->create_loc_conf(cf); |
543 if (mconf == NULL) { | |
485 | 544 return NGX_CONF_ERROR; |
545 } | |
546 | |
547 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
548 } | |
549 } | |
550 | |
551 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
552 | |
553 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
554 clcf->loc_conf = ctx->loc_conf; | |
555 clcf->name = pclcf->name; | |
556 clcf->noname = 1; | |
557 | |
2027 | 558 if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) { |
485 | 559 return NGX_CONF_ERROR; |
560 } | |
561 | |
501 | 562 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
485 | 563 return NGX_CONF_ERROR; |
564 } | |
565 | |
509 | 566 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
485 | 567 if (if_code == NULL) { |
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568 return NGX_CONF_ERROR; |
485 | 569 } |
570 | |
509 | 571 if_code->code = ngx_http_script_if_code; |
485 | 572 |
573 elts = lcf->codes->elts; | |
574 | |
575 | |
631 | 576 /* the inner directives must be compiled to the same code array */ |
485 | 577 |
578 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
579 nlcf->codes = lcf->codes; | |
580 | |
581 | |
582 save = *cf; | |
583 cf->ctx = ctx; | |
584 | |
585 if (pclcf->name.len == 0) { | |
586 if_code->loc_conf = NULL; | |
587 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
588 | |
589 } else { | |
590 if_code->loc_conf = ctx->loc_conf; | |
591 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
592 } | |
593 | |
594 rv = ngx_conf_parse(cf, NULL); | |
595 | |
596 *cf = save; | |
597 | |
598 if (rv != NGX_CONF_OK) { | |
599 return rv; | |
600 } | |
601 | |
602 | |
603 if (elts != lcf->codes->elts) { | |
509 | 604 if_code = (ngx_http_script_if_code_t *) |
485 | 605 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
606 } | |
607 | |
608 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
609 - (u_char *) if_code; | |
437
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610 |
555 | 611 /* the code array belong to parent block */ |
612 | |
613 nlcf->codes = NULL; | |
614 | |
437
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615 return NGX_CONF_OK; |
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616 } |
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617 |
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618 |
487 | 619 static char * |
501 | 620 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
621 { | |
631 | 622 u_char *p; |
623 size_t len; | |
509 | 624 ngx_str_t *value, err; |
515 | 625 ngx_uint_t cur, last, n; |
577 | 626 ngx_http_script_code_pt *code; |
631 | 627 ngx_http_script_file_code_t *fop; |
509 | 628 ngx_http_script_regex_code_t *regex; |
629 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
501 | 630 |
631 value = cf->args->elts; | |
632 last = cf->args->nelts - 1; | |
633 | |
634 if (value[1].len < 1 || value[1].data[0] != '(') { | |
635 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
636 "invalid condition \"%V\"", &value[1]); | |
637 return NGX_CONF_ERROR; | |
638 } | |
639 | |
640 if (value[1].len == 1) { | |
641 cur = 2; | |
642 | |
643 } else { | |
644 cur = 1; | |
645 value[1].len--; | |
646 value[1].data++; | |
647 } | |
648 | |
649 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
650 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
651 "invalid condition \"%V\"", &value[last]); | |
652 return NGX_CONF_ERROR; | |
653 } | |
654 | |
655 if (value[last].len == 1) { | |
656 last--; | |
657 | |
658 } else { | |
659 value[last].len--; | |
660 value[last].data[value[last].len] = '\0'; | |
661 } | |
662 | |
631 | 663 len = value[cur].len; |
664 p = value[cur].data; | |
665 | |
666 if (len > 1 && p[0] == '$') { | |
501 | 667 |
668 if (cur != last && cur + 2 != last) { | |
669 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
631 | 670 "invalid condition \"%V\"", &value[cur]); |
501 | 671 return NGX_CONF_ERROR; |
672 } | |
673 | |
577 | 674 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { |
501 | 675 return NGX_CONF_ERROR; |
676 } | |
677 | |
678 if (cur == last) { | |
679 return NGX_CONF_OK; | |
680 } | |
681 | |
682 cur++; | |
683 | |
631 | 684 len = value[cur].len; |
685 p = value[cur].data; | |
686 | |
687 if (len == 1 && p[0] == '=') { | |
577 | 688 |
689 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
690 return NGX_CONF_ERROR; | |
691 } | |
692 | |
693 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
694 sizeof(uintptr_t)); | |
695 if (code == NULL) { | |
696 return NGX_CONF_ERROR; | |
697 } | |
698 | |
699 *code = ngx_http_script_equal_code; | |
700 | |
701 return NGX_CONF_OK; | |
501 | 702 } |
703 | |
631 | 704 if (len == 2 && p[0] == '!' && p[1] == '=') { |
705 | |
577 | 706 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { |
707 return NGX_CONF_ERROR; | |
708 } | |
709 | |
710 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
711 sizeof(uintptr_t)); | |
712 if (code == NULL) { | |
713 return NGX_CONF_ERROR; | |
714 } | |
715 | |
716 *code = ngx_http_script_not_equal_code; | |
717 return NGX_CONF_OK; | |
501 | 718 } |
719 | |
631 | 720 if ((len == 1 && p[0] == '~') |
721 || (len == 2 && p[0] == '~' && p[1] == '*') | |
722 || (len == 2 && p[0] == '!' && p[1] == '~') | |
723 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*')) | |
577 | 724 { |
725 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
726 sizeof(ngx_http_script_regex_code_t)); | |
727 if (regex == NULL) { | |
728 return NGX_CONF_ERROR; | |
729 } | |
509 | 730 |
577 | 731 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
732 | |
733 err.len = NGX_MAX_CONF_ERRSTR; | |
734 err.data = errstr; | |
735 | |
736 regex->regex = ngx_regex_compile(&value[last], | |
631 | 737 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0, |
738 cf->pool, &err); | |
501 | 739 |
577 | 740 if (regex->regex == NULL) { |
741 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
742 return NGX_CONF_ERROR; | |
743 } | |
744 | |
745 regex->code = ngx_http_script_regex_start_code; | |
746 regex->next = sizeof(ngx_http_script_regex_code_t); | |
747 regex->test = 1; | |
631 | 748 if (p[0] == '!') { |
749 regex->negative_test = 1; | |
750 } | |
577 | 751 regex->name = value[last]; |
501 | 752 |
577 | 753 n = ngx_regex_capture_count(regex->regex); |
754 | |
755 if (n) { | |
756 regex->ncaptures = (n + 1) * 3; | |
757 } | |
758 | |
759 return NGX_CONF_OK; | |
501 | 760 } |
761 | |
577 | 762 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
763 "unexpected \"%V\" in condition", &value[cur]); | |
764 return NGX_CONF_ERROR; | |
631 | 765 |
766 } else if ((len == 2 && p[0] == '-') | |
767 || (len == 3 && p[0] == '!' && p[1] == '-')) | |
768 { | |
769 if (cur + 1 != last) { | |
770 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
771 "invalid condition \"%V\"", &value[cur]); | |
772 return NGX_CONF_ERROR; | |
773 } | |
774 | |
775 value[last].data[value[last].len] = '\0'; | |
776 value[last].len++; | |
777 | |
778 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
779 return NGX_CONF_ERROR; | |
780 } | |
781 | |
782 fop = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
783 sizeof(ngx_http_script_file_code_t)); | |
784 if (fop == NULL) { | |
785 return NGX_CONF_ERROR; | |
786 } | |
787 | |
788 fop->code = ngx_http_script_file_code; | |
789 | |
790 if (p[1] == 'f') { | |
791 fop->op = ngx_http_script_file_plain; | |
792 return NGX_CONF_OK; | |
793 } | |
794 | |
669 | 795 if (p[1] == 'd') { |
796 fop->op = ngx_http_script_file_dir; | |
797 return NGX_CONF_OK; | |
798 } | |
799 | |
800 if (p[1] == 'e') { | |
801 fop->op = ngx_http_script_file_exists; | |
802 return NGX_CONF_OK; | |
803 } | |
804 | |
805 if (p[1] == 'x') { | |
806 fop->op = ngx_http_script_file_exec; | |
807 return NGX_CONF_OK; | |
808 } | |
809 | |
631 | 810 if (p[0] == '!') { |
811 if (p[2] == 'f') { | |
812 fop->op = ngx_http_script_file_not_plain; | |
813 return NGX_CONF_OK; | |
814 } | |
669 | 815 |
816 if (p[2] == 'd') { | |
817 fop->op = ngx_http_script_file_not_dir; | |
818 return NGX_CONF_OK; | |
819 } | |
820 | |
821 if (p[2] == 'e') { | |
822 fop->op = ngx_http_script_file_not_exists; | |
823 return NGX_CONF_OK; | |
824 } | |
825 | |
826 if (p[2] == 'x') { | |
827 fop->op = ngx_http_script_file_not_exec; | |
828 return NGX_CONF_OK; | |
829 } | |
631 | 830 } |
831 | |
832 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
833 "invalid condition \"%V\"", &value[cur]); | |
834 return NGX_CONF_ERROR; | |
501 | 835 } |
836 | |
837 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
838 "invalid condition \"%V\"", &value[cur]); | |
839 | |
840 return NGX_CONF_ERROR; | |
841 } | |
842 | |
843 | |
844 static char * | |
845 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
846 ngx_str_t *value) | |
847 { | |
509 | 848 ngx_int_t index; |
849 ngx_http_script_var_code_t *var_code; | |
501 | 850 |
851 value->len--; | |
852 value->data++; | |
853 | |
577 | 854 index = ngx_http_get_variable_index(cf, value); |
501 | 855 |
577 | 856 if (index == NGX_ERROR) { |
857 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
|
858 } |
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
859 |
577 | 860 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
861 sizeof(ngx_http_script_var_code_t)); | |
862 if (var_code == NULL) { | |
863 return NGX_CONF_ERROR; | |
485 | 864 } |
865 | |
577 | 866 var_code->code = ngx_http_script_var_code; |
867 var_code->index = index; | |
485 | 868 |
869 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
|
870 } |
485 | 871 |
872 | |
501 | 873 static char * |
874 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
875 { | |
577 | 876 ngx_http_rewrite_loc_conf_t *lcf = conf; |
501 | 877 |
637 | 878 ngx_int_t index; |
879 ngx_str_t *value; | |
880 ngx_http_variable_t *v; | |
881 ngx_http_script_var_code_t *vcode; | |
882 ngx_http_script_var_handler_code_t *vhcode; | |
501 | 883 |
884 value = cf->args->elts; | |
885 | |
886 if (value[1].data[0] != '$') { | |
887 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
888 "invalid variable name \"%V\"", &value[1]); | |
889 return NGX_CONF_ERROR; | |
890 } | |
891 | |
892 value[1].len--; | |
893 value[1].data++; | |
894 | |
1565 | 895 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE); |
501 | 896 if (v == NULL) { |
897 return NGX_CONF_ERROR; | |
898 } | |
899 | |
509 | 900 index = ngx_http_get_variable_index(cf, &value[1]); |
901 if (index == NGX_ERROR) { | |
902 return NGX_CONF_ERROR; | |
903 } | |
501 | 904 |
1189
5e1a8fe79c4b
allow to "set" $http_, $sent_http_, and $upstream_http_ variables
Igor Sysoev <igor@sysoev.ru>
parents:
739
diff
changeset
|
905 if (v->get_handler == NULL |
1192 | 906 && ngx_strncasecmp(value[1].data, (u_char *) "http_", 5) != 0 |
907 && ngx_strncasecmp(value[1].data, (u_char *) "sent_http_", 10) != 0 | |
908 && ngx_strncasecmp(value[1].data, (u_char *) "upstream_http_", 14) != 0) | |
1189
5e1a8fe79c4b
allow to "set" $http_, $sent_http_, and $upstream_http_ variables
Igor Sysoev <igor@sysoev.ru>
parents:
739
diff
changeset
|
909 { |
637 | 910 v->get_handler = ngx_http_rewrite_var; |
555 | 911 v->data = index; |
912 } | |
509 | 913 |
577 | 914 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { |
915 return NGX_CONF_ERROR; | |
515 | 916 } |
501 | 917 |
637 | 918 if (v->set_handler) { |
919 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
920 sizeof(ngx_http_script_var_handler_code_t)); | |
921 if (vhcode == NULL) { | |
922 return NGX_CONF_ERROR; | |
923 } | |
924 | |
925 vhcode->code = ngx_http_script_var_set_handler_code; | |
926 vhcode->handler = v->set_handler; | |
927 vhcode->data = v->data; | |
928 | |
929 return NGX_CONF_OK; | |
930 } | |
931 | |
932 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
933 sizeof(ngx_http_script_var_code_t)); | |
934 if (vcode == NULL) { | |
501 | 935 return NGX_CONF_ERROR; |
936 } | |
937 | |
637 | 938 vcode->code = ngx_http_script_set_var_code; |
939 vcode->index = (uintptr_t) index; | |
501 | 940 |
941 return NGX_CONF_OK; | |
942 } | |
577 | 943 |
944 | |
945 static char * | |
946 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
947 ngx_str_t *value) | |
948 { | |
949 ngx_int_t n; | |
950 ngx_http_script_compile_t sc; | |
951 ngx_http_script_value_code_t *val; | |
952 ngx_http_script_complex_value_code_t *complex; | |
953 | |
954 n = ngx_http_script_variables_count(value); | |
955 | |
956 if (n == 0) { | |
957 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
958 sizeof(ngx_http_script_value_code_t)); | |
959 if (val == NULL) { | |
960 return NGX_CONF_ERROR; | |
961 } | |
962 | |
963 n = ngx_atoi(value->data, value->len); | |
964 | |
965 if (n == NGX_ERROR) { | |
966 n = 0; | |
967 } | |
968 | |
969 val->code = ngx_http_script_value_code; | |
970 val->value = (uintptr_t) n; | |
971 val->text_len = (uintptr_t) value->len; | |
972 val->text_data = (uintptr_t) value->data; | |
973 | |
974 return NGX_CONF_OK; | |
975 } | |
976 | |
977 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
978 sizeof(ngx_http_script_complex_value_code_t)); | |
979 if (complex == NULL) { | |
980 return NGX_CONF_ERROR; | |
981 } | |
982 | |
983 complex->code = ngx_http_script_complex_value_code; | |
984 complex->lengths = NULL; | |
985 | |
986 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
987 | |
988 sc.cf = cf; | |
989 sc.source = value; | |
990 sc.lengths = &complex->lengths; | |
991 sc.values = &lcf->codes; | |
992 sc.variables = n; | |
993 sc.complete_lengths = 1; | |
994 | |
995 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
996 return NGX_CONF_ERROR; | |
997 } | |
998 | |
999 return NGX_CONF_OK; | |
1000 } |