Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 726:7b71936d5299
fix: "return" always overrode "error_page" response code
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 02 Oct 2006 08:37:11 +0000 |
parents | 7e24168b0853 |
children | 9f983de19a1d |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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6 |
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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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10 |
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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); |
681 | 26 static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf); |
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); | |
437
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42 |
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43 |
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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 | |
501 | 77 { ngx_string("set"), |
78 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
79 |NGX_CONF_TAKE2, | |
80 ngx_http_rewrite_set, | |
81 NGX_HTTP_LOC_CONF_OFFSET, | |
82 0, | |
83 NULL }, | |
84 | |
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85 { ngx_string("rewrite_log"), |
635 | 86 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF |
87 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
325
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88 ngx_conf_set_flag_slot, |
485 | 89 NGX_HTTP_LOC_CONF_OFFSET, |
90 offsetof(ngx_http_rewrite_loc_conf_t, log), | |
325
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91 NULL }, |
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92 |
635 | 93 { ngx_string("uninitialized_variable_warn"), |
94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF | |
95 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, | |
96 ngx_conf_set_flag_slot, | |
97 NGX_HTTP_LOC_CONF_OFFSET, | |
98 offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn), | |
99 NULL }, | |
100 | |
216
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101 ngx_null_command |
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102 }; |
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103 |
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104 |
667 | 105 static ngx_http_module_t ngx_http_rewrite_module_ctx = { |
509 | 106 NULL, /* preconfiguration */ |
681 | 107 ngx_http_rewrite_init, /* postconfiguration */ |
216
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108 |
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109 NULL, /* create main configuration */ |
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110 NULL, /* init main configuration */ |
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111 |
485 | 112 NULL, /* create server configuration */ |
113 NULL, /* merge server configuration */ | |
216
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114 |
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115 ngx_http_rewrite_create_loc_conf, /* create location configration */ |
485 | 116 ngx_http_rewrite_merge_loc_conf /* merge location configration */ |
216
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117 }; |
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118 |
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119 |
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120 ngx_module_t ngx_http_rewrite_module = { |
509 | 121 NGX_MODULE_V1, |
577 | 122 &ngx_http_rewrite_module_ctx, /* module context */ |
216
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123 ngx_http_rewrite_commands, /* module directives */ |
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124 NGX_HTTP_MODULE, /* module type */ |
541 | 125 NULL, /* init master */ |
681 | 126 NULL, /* init module */ |
541 | 127 NULL, /* init process */ |
128 NULL, /* init thread */ | |
129 NULL, /* exit thread */ | |
130 NULL, /* exit process */ | |
131 NULL, /* exit master */ | |
132 NGX_MODULE_V1_PADDING | |
216
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133 }; |
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134 |
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135 |
487 | 136 static ngx_int_t |
137 ngx_http_rewrite_handler(ngx_http_request_t *r) | |
216
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138 { |
509 | 139 ngx_http_script_code_pt code; |
140 ngx_http_script_engine_t *e; | |
635 | 141 ngx_http_rewrite_loc_conf_t *rlcf; |
216
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142 |
635 | 143 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); |
216
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144 |
635 | 145 if (rlcf->codes == NULL) { |
485 | 146 return NGX_DECLINED; |
147 } | |
216
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148 |
509 | 149 e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t)); |
501 | 150 if (e == NULL) { |
485 | 151 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
152 } | |
216
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153 |
509 | 154 e->sp = ngx_pcalloc(r->pool, |
635 | 155 rlcf->stack_size * sizeof(ngx_http_variable_value_t)); |
485 | 156 if (e->sp == NULL) { |
157 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
158 } | |
326
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159 |
635 | 160 if (rlcf->captures) { |
161 e->captures = ngx_palloc(r->pool, rlcf->captures * sizeof(int)); | |
485 | 162 if (e->captures == NULL) { |
216
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163 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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164 } |
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165 |
485 | 166 } else { |
167 e->captures = NULL; | |
168 } | |
169 | |
635 | 170 e->ip = rlcf->codes->elts; |
509 | 171 e->request = r; |
485 | 172 e->quote = 1; |
635 | 173 e->log = rlcf->log; |
485 | 174 e->status = NGX_DECLINED; |
175 | |
176 while (*(uintptr_t *) e->ip) { | |
509 | 177 code = *(ngx_http_script_code_pt *) e->ip; |
485 | 178 code(e); |
179 } | |
180 | |
726
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181 if (r->err_status == 0) { |
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182 return e->status; |
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183 } |
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184 |
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185 return r->err_status; |
485 | 186 } |
187 | |
188 | |
573 | 189 static ngx_int_t |
190 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
191 uintptr_t data) | |
501 | 192 { |
635 | 193 ngx_http_variable_t *var; |
194 ngx_http_core_main_conf_t *cmcf; | |
195 ngx_http_rewrite_loc_conf_t *rlcf; | |
196 | |
197 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); | |
198 | |
199 if (rlcf->uninitialized_variable_warn == 0) { | |
200 *v = ngx_http_variable_null_value; | |
201 return NGX_OK; | |
202 } | |
501 | 203 |
204 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
205 | |
206 var = cmcf->variables.elts; | |
207 | |
208 /* | |
209 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
519 | 210 * and they should be handled by ngx_http_get_indexed_variable(), |
501 | 211 * so the handler is called only if the variable is not initialized |
212 */ | |
213 | |
635 | 214 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, |
501 | 215 "using uninitialized \"%V\" variable", &var[data].name); |
216 | |
577 | 217 *v = ngx_http_variable_null_value; |
573 | 218 |
219 return NGX_OK; | |
501 | 220 } |
221 | |
222 | |
487 | 223 static void * |
224 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
437
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225 { |
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226 ngx_http_rewrite_loc_conf_t *conf; |
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227 |
501 | 228 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
229 if (conf == NULL) { | |
437
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230 return NGX_CONF_ERROR; |
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231 } |
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232 |
485 | 233 conf->stack_size = NGX_CONF_UNSET_UINT; |
234 conf->log = NGX_CONF_UNSET; | |
635 | 235 conf->uninitialized_variable_warn = NGX_CONF_UNSET; |
485 | 236 |
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237 return conf; |
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238 } |
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239 |
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240 |
487 | 241 static char * |
242 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
216
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243 { |
485 | 244 ngx_http_rewrite_loc_conf_t *prev = parent; |
245 ngx_http_rewrite_loc_conf_t *conf = child; | |
246 | |
509 | 247 uintptr_t *code; |
485 | 248 |
249 ngx_conf_merge_value(conf->log, prev->log, 0); | |
635 | 250 ngx_conf_merge_value(conf->uninitialized_variable_warn, |
251 prev->uninitialized_variable_warn, 1); | |
663 | 252 ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10); |
485 | 253 |
254 if (conf->codes == NULL) { | |
255 return NGX_CONF_OK; | |
256 } | |
257 | |
258 if (conf->codes == prev->codes) { | |
259 return NGX_CONF_OK; | |
260 } | |
261 | |
501 | 262 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
263 if (code == NULL) { | |
216
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264 return NGX_CONF_ERROR; |
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265 } |
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266 |
485 | 267 *code = (uintptr_t) NULL; |
268 | |
269 return NGX_CONF_OK; | |
270 } | |
271 | |
216
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272 |
509 | 273 static ngx_int_t |
681 | 274 ngx_http_rewrite_init(ngx_conf_t *cf) |
577 | 275 { |
509 | 276 ngx_http_handler_pt *h; |
277 ngx_http_core_main_conf_t *cmcf; | |
278 | |
681 | 279 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
509 | 280 |
573 | 281 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
282 if (h == NULL) { | |
283 return NGX_ERROR; | |
284 } | |
285 | |
286 *h = ngx_http_rewrite_handler; | |
287 | |
509 | 288 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
289 if (h == NULL) { | |
290 return NGX_ERROR; | |
291 } | |
292 | |
293 *h = ngx_http_rewrite_handler; | |
294 | |
295 return NGX_OK; | |
577 | 296 } |
509 | 297 |
298 | |
487 | 299 static char * |
300 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 301 { |
577 | 302 ngx_http_rewrite_loc_conf_t *lcf = conf; |
303 | |
509 | 304 ngx_str_t *value, err; |
305 ngx_int_t n; | |
306 ngx_uint_t last; | |
307 ngx_http_script_code_pt *code; | |
308 ngx_http_script_compile_t sc; | |
309 ngx_http_script_regex_code_t *regex; | |
310 ngx_http_script_regex_end_code_t *regex_end; | |
311 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
485 | 312 |
509 | 313 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
314 sizeof(ngx_http_script_regex_code_t)); | |
485 | 315 if (regex == NULL) { |
316 return NGX_CONF_ERROR; | |
317 } | |
216
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318 |
509 | 319 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
320 | |
216
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321 value = cf->args->elts; |
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322 |
485 | 323 err.len = NGX_MAX_CONF_ERRSTR; |
324 err.data = errstr; | |
325 | |
326 /* TODO: NGX_REGEX_CASELESS */ | |
327 | |
328 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
329 | |
330 if (regex->regex == NULL) { | |
331 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
332 return NGX_CONF_ERROR; | |
333 } | |
334 | |
509 | 335 regex->code = ngx_http_script_regex_start_code; |
485 | 336 regex->uri = 1; |
337 regex->name = value[1]; | |
216
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338 |
509 | 339 if (value[2].data[value[2].len - 1] == '?') { |
340 | |
341 /* the last "?" drops the original arguments */ | |
342 value[2].len--; | |
343 | |
344 } else { | |
345 regex->add_args = 1; | |
346 } | |
347 | |
485 | 348 last = 0; |
349 | |
350 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) { | |
351 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
352 regex->redirect = 1; | |
353 last = 1; | |
354 } | |
355 | |
356 if (cf->args->nelts == 4) { | |
357 if (ngx_strcmp(value[3].data, "last") == 0) { | |
358 last = 1; | |
216
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359 |
487 | 360 } else if (ngx_strcmp(value[3].data, "break") == 0) { |
361 regex->break_cycle = 1; | |
362 last = 1; | |
363 | |
485 | 364 } else if (ngx_strcmp(value[3].data, "redirect") == 0) { |
365 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
366 regex->redirect = 1; | |
367 last = 1; | |
326
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368 |
485 | 369 } else if (ngx_strcmp(value[3].data, "permanent") == 0) { |
370 regex->status = NGX_HTTP_MOVED_PERMANENTLY; | |
371 regex->redirect = 1; | |
372 last = 1; | |
326
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373 |
485 | 374 } else { |
326
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375 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
461 | 376 "invalid parameter \"%V\"", &value[3]); |
326
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377 return NGX_CONF_ERROR; |
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378 } |
485 | 379 } |
326
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380 |
509 | 381 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
485 | 382 |
509 | 383 sc.cf = cf; |
384 sc.source = &value[2]; | |
385 sc.lengths = ®ex->lengths; | |
386 sc.values = &lcf->codes; | |
387 sc.variables = ngx_http_script_variables_count(&value[2]); | |
388 sc.main = regex; | |
389 sc.complete_lengths = 1; | |
390 sc.compile_args = !regex->redirect; | |
485 | 391 |
509 | 392 if (ngx_http_script_compile(&sc) != NGX_OK) { |
393 return NGX_CONF_ERROR; | |
394 } | |
485 | 395 |
509 | 396 regex = sc.main; |
216
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397 |
509 | 398 regex->ncaptures = sc.ncaptures; |
399 regex->size = sc.size; | |
400 regex->args = sc.args; | |
216
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401 |
641 | 402 if (sc.variables == 0 && !sc.dup_capture) { |
509 | 403 regex->lengths = NULL; |
485 | 404 } |
405 | |
406 n = ngx_regex_capture_count(regex->regex); | |
407 | |
501 | 408 if (n < 0) { |
409 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
410 ngx_regex_capture_count_n " failed for " | |
411 "pattern \"%V\"", &value[1]); | |
412 return NGX_CONF_ERROR; | |
413 } | |
414 | |
415 if (regex->ncaptures > (ngx_uint_t) n) { | |
485 | 416 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
417 "pattern \"%V\" has less captures " | |
418 "than referrenced in substitution \"%V\"", | |
419 &value[1], &value[2]); | |
420 return NGX_CONF_ERROR; | |
421 } | |
422 | |
501 | 423 if (regex->ncaptures < (ngx_uint_t) n) { |
424 regex->ncaptures = (ngx_uint_t) n; | |
485 | 425 } |
481 | 426 |
485 | 427 if (regex->ncaptures) { |
428 regex->ncaptures = (regex->ncaptures + 1) * 3; | |
429 | |
515 | 430 if (lcf->captures < regex->ncaptures) { |
431 lcf->captures = regex->ncaptures; | |
432 } | |
509 | 433 } |
434 | |
435 regex_end = ngx_http_script_add_code(lcf->codes, | |
436 sizeof(ngx_http_script_regex_end_code_t), | |
437 ®ex); | |
485 | 438 if (regex_end == NULL) { |
439 return NGX_CONF_ERROR; | |
440 } | |
441 | |
509 | 442 regex_end->code = ngx_http_script_regex_end_code; |
485 | 443 regex_end->uri = regex->uri; |
444 regex_end->args = regex->args; | |
509 | 445 regex_end->add_args = regex->add_args; |
485 | 446 regex_end->redirect = regex->redirect; |
447 | |
448 if (last) { | |
517 | 449 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
485 | 450 if (code == NULL) { |
451 return NGX_CONF_ERROR; | |
218
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452 } |
216
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453 |
485 | 454 *code = (uintptr_t) NULL; |
455 } | |
456 | |
457 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
458 - (u_char *) regex; | |
459 | |
460 return NGX_CONF_OK; | |
461 } | |
462 | |
463 | |
487 | 464 static char * |
465 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 466 { |
577 | 467 ngx_http_rewrite_loc_conf_t *lcf = conf; |
216
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468 |
509 | 469 ngx_str_t *value; |
470 ngx_http_script_return_code_t *ret; | |
485 | 471 |
509 | 472 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
473 sizeof(ngx_http_script_return_code_t)); | |
485 | 474 if (ret == NULL) { |
475 return NGX_CONF_ERROR; | |
476 } | |
477 | |
478 value = cf->args->elts; | |
479 | |
509 | 480 ret->code = ngx_http_script_return_code; |
485 | 481 ret->null = (uintptr_t) NULL; |
482 | |
483 ret->status = ngx_atoi(value[1].data, value[1].len); | |
484 | |
485 if (ret->status == (uintptr_t) NGX_ERROR) { | |
486 return NGX_CONF_ERROR; | |
216
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487 } |
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488 |
f1d0e5f09c1e
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489 return NGX_CONF_OK; |
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490 } |
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491 |
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492 |
487 | 493 static char * |
527 | 494 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
495 { | |
496 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
497 | |
498 ngx_http_script_code_pt *code; | |
499 | |
500 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
501 if (code == NULL) { | |
502 return NGX_CONF_ERROR; | |
503 } | |
504 | |
505 *code = ngx_http_script_break_code; | |
506 | |
507 return NGX_CONF_OK; | |
508 } | |
509 | |
510 | |
511 static char * | |
487 | 512 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
437
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513 { |
577 | 514 ngx_http_rewrite_loc_conf_t *lcf = conf; |
485 | 515 |
516 void *mconf; | |
517 char *rv; | |
518 u_char *elts; | |
519 ngx_uint_t i; | |
520 ngx_conf_t save; | |
521 ngx_http_module_t *module; | |
522 ngx_http_conf_ctx_t *ctx, *pctx; | |
523 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp; | |
509 | 524 ngx_http_script_if_code_t *if_code; |
485 | 525 ngx_http_rewrite_loc_conf_t *nlcf; |
526 | |
501 | 527 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
528 if (ctx == NULL) { | |
485 | 529 return NGX_CONF_ERROR; |
530 } | |
531 | |
532 pctx = cf->ctx; | |
533 ctx->main_conf = pctx->main_conf; | |
577 | 534 ctx->srv_conf = pctx->srv_conf; |
485 | 535 |
536 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
537 if (ctx->loc_conf == NULL) { | |
538 return NGX_CONF_ERROR; | |
539 } | |
540 | |
541 for (i = 0; ngx_modules[i]; i++) { | |
542 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
543 continue; | |
544 } | |
545 | |
546 module = ngx_modules[i]->ctx; | |
577 | 547 |
485 | 548 if (module->create_loc_conf) { |
549 | |
501 | 550 mconf = module->create_loc_conf(cf); |
551 if (mconf == NULL) { | |
485 | 552 return NGX_CONF_ERROR; |
553 } | |
554 | |
555 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
556 } | |
557 } | |
558 | |
559 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
560 | |
561 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
562 clcf->loc_conf = ctx->loc_conf; | |
563 clcf->name = pclcf->name; | |
564 clcf->noname = 1; | |
565 | |
566 if (pclcf->locations.elts == NULL) { | |
567 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *)) | |
555 | 568 == NGX_ERROR) |
485 | 569 { |
570 return NGX_CONF_ERROR; | |
571 } | |
572 } | |
573 | |
501 | 574 clcfp = ngx_array_push(&pclcf->locations); |
575 if (clcfp == NULL) { | |
485 | 576 return NGX_CONF_ERROR; |
577 } | |
578 | |
579 *clcfp = clcf; | |
580 | |
581 | |
501 | 582 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
485 | 583 return NGX_CONF_ERROR; |
584 } | |
585 | |
509 | 586 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
485 | 587 if (if_code == NULL) { |
588 return NULL; | |
589 } | |
590 | |
509 | 591 if_code->code = ngx_http_script_if_code; |
485 | 592 |
593 elts = lcf->codes->elts; | |
594 | |
595 | |
631 | 596 /* the inner directives must be compiled to the same code array */ |
485 | 597 |
598 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
599 nlcf->codes = lcf->codes; | |
600 | |
601 | |
602 save = *cf; | |
603 cf->ctx = ctx; | |
604 | |
605 if (pclcf->name.len == 0) { | |
606 if_code->loc_conf = NULL; | |
607 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
608 | |
609 } else { | |
610 if_code->loc_conf = ctx->loc_conf; | |
611 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
612 } | |
613 | |
614 rv = ngx_conf_parse(cf, NULL); | |
615 | |
616 *cf = save; | |
617 | |
618 if (rv != NGX_CONF_OK) { | |
619 return rv; | |
620 } | |
621 | |
622 | |
517 | 623 if (lcf->captures < nlcf->captures) { |
624 lcf->captures = nlcf->captures; | |
625 } | |
626 | |
627 | |
485 | 628 if (elts != lcf->codes->elts) { |
509 | 629 if_code = (ngx_http_script_if_code_t *) |
485 | 630 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
631 } | |
632 | |
633 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
634 - (u_char *) if_code; | |
437
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635 |
555 | 636 /* the code array belong to parent block */ |
637 | |
638 nlcf->codes = NULL; | |
639 | |
437
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640 return NGX_CONF_OK; |
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641 } |
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396
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642 |
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643 |
487 | 644 static char * |
501 | 645 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
646 { | |
631 | 647 u_char *p; |
648 size_t len; | |
509 | 649 ngx_str_t *value, err; |
515 | 650 ngx_uint_t cur, last, n; |
577 | 651 ngx_http_script_code_pt *code; |
631 | 652 ngx_http_script_file_code_t *fop; |
509 | 653 ngx_http_script_regex_code_t *regex; |
654 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
501 | 655 |
656 value = cf->args->elts; | |
657 last = cf->args->nelts - 1; | |
658 | |
659 if (value[1].len < 1 || value[1].data[0] != '(') { | |
660 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
661 "invalid condition \"%V\"", &value[1]); | |
662 return NGX_CONF_ERROR; | |
663 } | |
664 | |
665 if (value[1].len == 1) { | |
666 cur = 2; | |
667 | |
668 } else { | |
669 cur = 1; | |
670 value[1].len--; | |
671 value[1].data++; | |
672 } | |
673 | |
674 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
675 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
676 "invalid condition \"%V\"", &value[last]); | |
677 return NGX_CONF_ERROR; | |
678 } | |
679 | |
680 if (value[last].len == 1) { | |
681 last--; | |
682 | |
683 } else { | |
684 value[last].len--; | |
685 value[last].data[value[last].len] = '\0'; | |
686 } | |
687 | |
631 | 688 len = value[cur].len; |
689 p = value[cur].data; | |
690 | |
691 if (len > 1 && p[0] == '$') { | |
501 | 692 |
693 if (cur != last && cur + 2 != last) { | |
694 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
631 | 695 "invalid condition \"%V\"", &value[cur]); |
501 | 696 return NGX_CONF_ERROR; |
697 } | |
698 | |
577 | 699 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { |
501 | 700 return NGX_CONF_ERROR; |
701 } | |
702 | |
703 if (cur == last) { | |
704 return NGX_CONF_OK; | |
705 } | |
706 | |
707 cur++; | |
708 | |
631 | 709 len = value[cur].len; |
710 p = value[cur].data; | |
711 | |
712 if (len == 1 && p[0] == '=') { | |
577 | 713 |
714 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
715 return NGX_CONF_ERROR; | |
716 } | |
717 | |
718 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
719 sizeof(uintptr_t)); | |
720 if (code == NULL) { | |
721 return NGX_CONF_ERROR; | |
722 } | |
723 | |
724 *code = ngx_http_script_equal_code; | |
725 | |
726 return NGX_CONF_OK; | |
501 | 727 } |
728 | |
631 | 729 if (len == 2 && p[0] == '!' && p[1] == '=') { |
730 | |
577 | 731 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { |
732 return NGX_CONF_ERROR; | |
733 } | |
734 | |
735 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
736 sizeof(uintptr_t)); | |
737 if (code == NULL) { | |
738 return NGX_CONF_ERROR; | |
739 } | |
740 | |
741 *code = ngx_http_script_not_equal_code; | |
742 return NGX_CONF_OK; | |
501 | 743 } |
744 | |
631 | 745 if ((len == 1 && p[0] == '~') |
746 || (len == 2 && p[0] == '~' && p[1] == '*') | |
747 || (len == 2 && p[0] == '!' && p[1] == '~') | |
748 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*')) | |
577 | 749 { |
750 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
751 sizeof(ngx_http_script_regex_code_t)); | |
752 if (regex == NULL) { | |
753 return NGX_CONF_ERROR; | |
754 } | |
509 | 755 |
577 | 756 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
757 | |
758 err.len = NGX_MAX_CONF_ERRSTR; | |
759 err.data = errstr; | |
760 | |
761 regex->regex = ngx_regex_compile(&value[last], | |
631 | 762 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0, |
763 cf->pool, &err); | |
501 | 764 |
577 | 765 if (regex->regex == NULL) { |
766 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
767 return NGX_CONF_ERROR; | |
768 } | |
769 | |
770 regex->code = ngx_http_script_regex_start_code; | |
771 regex->next = sizeof(ngx_http_script_regex_code_t); | |
772 regex->test = 1; | |
631 | 773 if (p[0] == '!') { |
774 regex->negative_test = 1; | |
775 } | |
577 | 776 regex->name = value[last]; |
501 | 777 |
577 | 778 n = ngx_regex_capture_count(regex->regex); |
779 | |
780 if (n) { | |
781 regex->ncaptures = (n + 1) * 3; | |
782 | |
783 if (lcf->captures < regex->ncaptures) { | |
784 lcf->captures = regex->ncaptures; | |
785 } | |
786 } | |
787 | |
788 return NGX_CONF_OK; | |
501 | 789 } |
790 | |
577 | 791 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
792 "unexpected \"%V\" in condition", &value[cur]); | |
793 return NGX_CONF_ERROR; | |
631 | 794 |
795 } else if ((len == 2 && p[0] == '-') | |
796 || (len == 3 && p[0] == '!' && p[1] == '-')) | |
797 { | |
798 if (cur + 1 != last) { | |
799 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
800 "invalid condition \"%V\"", &value[cur]); | |
801 return NGX_CONF_ERROR; | |
802 } | |
803 | |
804 value[last].data[value[last].len] = '\0'; | |
805 value[last].len++; | |
806 | |
807 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
808 return NGX_CONF_ERROR; | |
809 } | |
810 | |
811 fop = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
812 sizeof(ngx_http_script_file_code_t)); | |
813 if (fop == NULL) { | |
814 return NGX_CONF_ERROR; | |
815 } | |
816 | |
817 fop->code = ngx_http_script_file_code; | |
818 | |
819 if (p[1] == 'f') { | |
820 fop->op = ngx_http_script_file_plain; | |
821 return NGX_CONF_OK; | |
822 } | |
823 | |
669 | 824 if (p[1] == 'd') { |
825 fop->op = ngx_http_script_file_dir; | |
826 return NGX_CONF_OK; | |
827 } | |
828 | |
829 if (p[1] == 'e') { | |
830 fop->op = ngx_http_script_file_exists; | |
831 return NGX_CONF_OK; | |
832 } | |
833 | |
834 if (p[1] == 'x') { | |
835 fop->op = ngx_http_script_file_exec; | |
836 return NGX_CONF_OK; | |
837 } | |
838 | |
631 | 839 if (p[0] == '!') { |
840 if (p[2] == 'f') { | |
841 fop->op = ngx_http_script_file_not_plain; | |
842 return NGX_CONF_OK; | |
843 } | |
669 | 844 |
845 if (p[2] == 'd') { | |
846 fop->op = ngx_http_script_file_not_dir; | |
847 return NGX_CONF_OK; | |
848 } | |
849 | |
850 if (p[2] == 'e') { | |
851 fop->op = ngx_http_script_file_not_exists; | |
852 return NGX_CONF_OK; | |
853 } | |
854 | |
855 if (p[2] == 'x') { | |
856 fop->op = ngx_http_script_file_not_exec; | |
857 return NGX_CONF_OK; | |
858 } | |
631 | 859 } |
860 | |
861 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
862 "invalid condition \"%V\"", &value[cur]); | |
863 return NGX_CONF_ERROR; | |
501 | 864 } |
865 | |
866 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
867 "invalid condition \"%V\"", &value[cur]); | |
868 | |
869 return NGX_CONF_ERROR; | |
870 } | |
871 | |
872 | |
873 static char * | |
874 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
875 ngx_str_t *value) | |
876 { | |
509 | 877 ngx_int_t index; |
878 ngx_http_script_var_code_t *var_code; | |
501 | 879 |
880 value->len--; | |
881 value->data++; | |
882 | |
577 | 883 index = ngx_http_get_variable_index(cf, value); |
501 | 884 |
577 | 885 if (index == NGX_ERROR) { |
886 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
|
887 } |
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
888 |
577 | 889 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
890 sizeof(ngx_http_script_var_code_t)); | |
891 if (var_code == NULL) { | |
892 return NGX_CONF_ERROR; | |
485 | 893 } |
894 | |
577 | 895 var_code->code = ngx_http_script_var_code; |
896 var_code->index = index; | |
485 | 897 |
898 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
|
899 } |
485 | 900 |
901 | |
501 | 902 static char * |
903 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
904 { | |
577 | 905 ngx_http_rewrite_loc_conf_t *lcf = conf; |
501 | 906 |
637 | 907 ngx_int_t index; |
908 ngx_str_t *value; | |
909 ngx_http_variable_t *v; | |
910 ngx_http_script_var_code_t *vcode; | |
911 ngx_http_script_var_handler_code_t *vhcode; | |
501 | 912 |
913 value = cf->args->elts; | |
914 | |
915 if (value[1].data[0] != '$') { | |
916 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
917 "invalid variable name \"%V\"", &value[1]); | |
918 return NGX_CONF_ERROR; | |
919 } | |
920 | |
921 value[1].len--; | |
922 value[1].data++; | |
923 | |
509 | 924 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGABLE); |
501 | 925 if (v == NULL) { |
926 return NGX_CONF_ERROR; | |
927 } | |
928 | |
509 | 929 index = ngx_http_get_variable_index(cf, &value[1]); |
930 if (index == NGX_ERROR) { | |
931 return NGX_CONF_ERROR; | |
932 } | |
501 | 933 |
637 | 934 if (v->get_handler == NULL) { |
935 v->get_handler = ngx_http_rewrite_var; | |
555 | 936 v->data = index; |
937 } | |
509 | 938 |
577 | 939 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { |
940 return NGX_CONF_ERROR; | |
515 | 941 } |
501 | 942 |
637 | 943 if (v->set_handler) { |
944 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
945 sizeof(ngx_http_script_var_handler_code_t)); | |
946 if (vhcode == NULL) { | |
947 return NGX_CONF_ERROR; | |
948 } | |
949 | |
950 vhcode->code = ngx_http_script_var_set_handler_code; | |
951 vhcode->handler = v->set_handler; | |
952 vhcode->data = v->data; | |
953 | |
954 return NGX_CONF_OK; | |
955 } | |
956 | |
957 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
958 sizeof(ngx_http_script_var_code_t)); | |
959 if (vcode == NULL) { | |
501 | 960 return NGX_CONF_ERROR; |
961 } | |
962 | |
637 | 963 vcode->code = ngx_http_script_set_var_code; |
964 vcode->index = (uintptr_t) index; | |
501 | 965 |
966 return NGX_CONF_OK; | |
967 } | |
577 | 968 |
969 | |
970 static char * | |
971 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
972 ngx_str_t *value) | |
973 { | |
974 ngx_int_t n; | |
975 ngx_http_script_compile_t sc; | |
976 ngx_http_script_value_code_t *val; | |
977 ngx_http_script_complex_value_code_t *complex; | |
978 | |
979 n = ngx_http_script_variables_count(value); | |
980 | |
981 if (n == 0) { | |
982 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
983 sizeof(ngx_http_script_value_code_t)); | |
984 if (val == NULL) { | |
985 return NGX_CONF_ERROR; | |
986 } | |
987 | |
988 n = ngx_atoi(value->data, value->len); | |
989 | |
990 if (n == NGX_ERROR) { | |
991 n = 0; | |
992 } | |
993 | |
994 val->code = ngx_http_script_value_code; | |
995 val->value = (uintptr_t) n; | |
996 val->text_len = (uintptr_t) value->len; | |
997 val->text_data = (uintptr_t) value->data; | |
998 | |
999 return NGX_CONF_OK; | |
1000 } | |
1001 | |
1002 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
1003 sizeof(ngx_http_script_complex_value_code_t)); | |
1004 if (complex == NULL) { | |
1005 return NGX_CONF_ERROR; | |
1006 } | |
1007 | |
1008 complex->code = ngx_http_script_complex_value_code; | |
1009 complex->lengths = NULL; | |
1010 | |
1011 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
1012 | |
1013 sc.cf = cf; | |
1014 sc.source = value; | |
1015 sc.lengths = &complex->lengths; | |
1016 sc.values = &lcf->codes; | |
1017 sc.variables = n; | |
1018 sc.complete_lengths = 1; | |
1019 | |
1020 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
1021 return NGX_CONF_ERROR; | |
1022 } | |
1023 | |
1024 return NGX_CONF_OK; | |
1025 } |