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> |
|---|---|
| date | Mon, 07 Jun 2010 11:51:37 +0000 |
| parents | d51b734b4540 |
| children |
| rev | line source |
|---|---|
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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11 |
| 485 | 12 typedef struct { |
| 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; |
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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); | |
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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, | |
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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, | |
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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 | |
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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 */ |
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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 */ | |
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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 */ |
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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 */ |
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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 | |
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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) | |
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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; |
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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 } | |
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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) | |
|
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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) { | |
|
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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 | |
|
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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 } | |
|
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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]; | |
|
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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; | |
|
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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; | |
|
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369 |
| 485 | 370 } else { |
|
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371 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 461 | 372 "invalid parameter \"%V\"", &value[3]); |
|
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373 return NGX_CONF_ERROR; |
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374 } |
| 485 | 375 } |
|
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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; |
|
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393 |
| 509 | 394 regex->ncaptures = sc.ncaptures; |
| 395 regex->size = sc.size; | |
| 396 regex->args = sc.args; | |
|
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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; | |
|
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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; | |
|
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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) |
|
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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
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
610 |
| 555 | 611 /* the code array belong to parent block */ |
| 612 | |
| 613 nlcf->codes = NULL; | |
| 614 | |
|
437
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
615 return NGX_CONF_OK; |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
616 } |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
617 |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
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 } |