Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 641:5e8fb59c18c1 release-0.3.42
nginx-0.3.42-RELEASE import
*) Feature: the "bind" option of the "listen" directive in IMAP/POP3
proxy.
*) Bugfix: if the same capture in the "rewrite" directive was used more
then once.
*) Bugfix: the $sent_http_content_type, $sent_http_content_length,
$sent_http_last_modified, $sent_http_connection,
$sent_http_keep_alive, and $sent_http_transfer_encoding variables
were not written to access log.
*) Bugfix: the $sent_http_cache_control returned value of the single
"Cache-Control" response header line.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 26 Apr 2006 09:52:47 +0000 |
| parents | e60fe4cf1d4e |
| children | 6d5c1535bb9d |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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11 |
| 485 | 12 typedef struct { |
| 577 | 13 ngx_array_t *codes; /* uintptr_t */ |
| 485 | 14 |
| 577 | 15 ngx_uint_t captures; |
| 16 ngx_uint_t stack_size; | |
| 485 | 17 |
| 577 | 18 ngx_flag_t log; |
| 635 | 19 ngx_flag_t uninitialized_variable_warn; |
| 485 | 20 } ngx_http_rewrite_loc_conf_t; |
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21 |
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22 |
| 485 | 23 static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf); |
| 24 static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, | |
| 487 | 25 void *parent, void *child); |
| 509 | 26 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle); |
| 485 | 27 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
| 28 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 487 | 29 void *conf); |
| 527 | 30 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, |
| 31 void *conf); | |
| 485 | 32 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, |
| 487 | 33 void *conf); |
| 501 | 34 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, |
| 35 ngx_http_rewrite_loc_conf_t *lcf); | |
| 36 static char *ngx_http_rewrite_variable(ngx_conf_t *cf, | |
| 37 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
| 509 | 38 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, |
| 501 | 39 void *conf); |
| 577 | 40 static char * ngx_http_rewrite_value(ngx_conf_t *cf, |
| 41 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
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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, | |
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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, | |
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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, | |
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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), | |
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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 | |
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101 ngx_null_command |
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102 }; |
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103 |
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104 |
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105 ngx_http_module_t ngx_http_rewrite_module_ctx = { |
| 509 | 106 NULL, /* preconfiguration */ |
| 107 NULL, /* postconfiguration */ | |
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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 */ | |
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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 */ |
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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 */ |
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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 */ |
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126 ngx_http_rewrite_init, /* 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 | |
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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) | |
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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; |
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142 |
| 635 | 143 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); |
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144 |
| 635 | 145 if (rlcf->codes == NULL) { |
| 485 | 146 return NGX_DECLINED; |
| 147 } | |
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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 } | |
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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 } | |
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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) { |
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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 | |
| 181 return e->status; | |
| 182 } | |
| 183 | |
| 184 | |
| 573 | 185 static ngx_int_t |
| 186 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
| 187 uintptr_t data) | |
| 501 | 188 { |
| 635 | 189 ngx_http_variable_t *var; |
| 190 ngx_http_core_main_conf_t *cmcf; | |
| 191 ngx_http_rewrite_loc_conf_t *rlcf; | |
| 192 | |
| 193 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); | |
| 194 | |
| 195 if (rlcf->uninitialized_variable_warn == 0) { | |
| 196 *v = ngx_http_variable_null_value; | |
| 197 return NGX_OK; | |
| 198 } | |
| 501 | 199 |
| 200 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
| 201 | |
| 202 var = cmcf->variables.elts; | |
| 203 | |
| 204 /* | |
| 205 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
| 519 | 206 * and they should be handled by ngx_http_get_indexed_variable(), |
| 501 | 207 * so the handler is called only if the variable is not initialized |
| 208 */ | |
| 209 | |
| 635 | 210 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, |
| 501 | 211 "using uninitialized \"%V\" variable", &var[data].name); |
| 212 | |
| 577 | 213 *v = ngx_http_variable_null_value; |
| 573 | 214 |
| 215 return NGX_OK; | |
| 501 | 216 } |
| 217 | |
| 218 | |
| 487 | 219 static void * |
| 220 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
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221 { |
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222 ngx_http_rewrite_loc_conf_t *conf; |
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223 |
| 501 | 224 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
| 225 if (conf == NULL) { | |
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226 return NGX_CONF_ERROR; |
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227 } |
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228 |
| 485 | 229 conf->stack_size = NGX_CONF_UNSET_UINT; |
| 230 conf->log = NGX_CONF_UNSET; | |
| 635 | 231 conf->uninitialized_variable_warn = NGX_CONF_UNSET; |
| 485 | 232 |
|
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233 return conf; |
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234 } |
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235 |
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236 |
| 487 | 237 static char * |
| 238 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
|
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239 { |
| 485 | 240 ngx_http_rewrite_loc_conf_t *prev = parent; |
| 241 ngx_http_rewrite_loc_conf_t *conf = child; | |
| 242 | |
| 509 | 243 uintptr_t *code; |
| 485 | 244 |
| 245 ngx_conf_merge_value(conf->log, prev->log, 0); | |
| 635 | 246 ngx_conf_merge_value(conf->uninitialized_variable_warn, |
| 247 prev->uninitialized_variable_warn, 1); | |
| 485 | 248 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10); |
| 249 | |
| 250 if (conf->codes == NULL) { | |
| 251 return NGX_CONF_OK; | |
| 252 } | |
| 253 | |
| 254 if (conf->codes == prev->codes) { | |
| 255 return NGX_CONF_OK; | |
| 256 } | |
| 257 | |
| 501 | 258 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
| 259 if (code == NULL) { | |
|
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260 return NGX_CONF_ERROR; |
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261 } |
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262 |
| 485 | 263 *code = (uintptr_t) NULL; |
| 264 | |
| 265 return NGX_CONF_OK; | |
| 266 } | |
| 267 | |
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268 |
| 509 | 269 static ngx_int_t |
| 270 ngx_http_rewrite_init(ngx_cycle_t *cycle) | |
| 577 | 271 { |
| 509 | 272 ngx_http_handler_pt *h; |
| 273 ngx_http_core_main_conf_t *cmcf; | |
| 274 | |
| 275 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); | |
| 276 | |
| 573 | 277 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
| 278 if (h == NULL) { | |
| 279 return NGX_ERROR; | |
| 280 } | |
| 281 | |
| 282 *h = ngx_http_rewrite_handler; | |
| 283 | |
| 509 | 284 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
| 285 if (h == NULL) { | |
| 286 return NGX_ERROR; | |
| 287 } | |
| 288 | |
| 289 *h = ngx_http_rewrite_handler; | |
| 290 | |
| 291 return NGX_OK; | |
| 577 | 292 } |
| 509 | 293 |
| 294 | |
| 487 | 295 static char * |
| 296 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 485 | 297 { |
| 577 | 298 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 299 | |
| 509 | 300 ngx_str_t *value, err; |
| 301 ngx_int_t n; | |
| 302 ngx_uint_t last; | |
| 303 ngx_http_script_code_pt *code; | |
| 304 ngx_http_script_compile_t sc; | |
| 305 ngx_http_script_regex_code_t *regex; | |
| 306 ngx_http_script_regex_end_code_t *regex_end; | |
| 307 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 485 | 308 |
| 509 | 309 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 310 sizeof(ngx_http_script_regex_code_t)); | |
| 485 | 311 if (regex == NULL) { |
| 312 return NGX_CONF_ERROR; | |
| 313 } | |
|
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314 |
| 509 | 315 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
| 316 | |
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317 value = cf->args->elts; |
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318 |
| 485 | 319 err.len = NGX_MAX_CONF_ERRSTR; |
| 320 err.data = errstr; | |
| 321 | |
| 322 /* TODO: NGX_REGEX_CASELESS */ | |
| 323 | |
| 324 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
| 325 | |
| 326 if (regex->regex == NULL) { | |
| 327 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
| 328 return NGX_CONF_ERROR; | |
| 329 } | |
| 330 | |
| 509 | 331 regex->code = ngx_http_script_regex_start_code; |
| 485 | 332 regex->uri = 1; |
| 333 regex->name = value[1]; | |
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334 |
| 509 | 335 if (value[2].data[value[2].len - 1] == '?') { |
| 336 | |
| 337 /* the last "?" drops the original arguments */ | |
| 338 value[2].len--; | |
| 339 | |
| 340 } else { | |
| 341 regex->add_args = 1; | |
| 342 } | |
| 343 | |
| 485 | 344 last = 0; |
| 345 | |
| 346 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) { | |
| 347 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
| 348 regex->redirect = 1; | |
| 349 last = 1; | |
| 350 } | |
| 351 | |
| 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 } |
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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; | |
| 425 | |
| 515 | 426 if (lcf->captures < regex->ncaptures) { |
| 427 lcf->captures = regex->ncaptures; | |
| 428 } | |
| 509 | 429 } |
| 430 | |
| 431 regex_end = ngx_http_script_add_code(lcf->codes, | |
| 432 sizeof(ngx_http_script_regex_end_code_t), | |
| 433 ®ex); | |
| 485 | 434 if (regex_end == NULL) { |
| 435 return NGX_CONF_ERROR; | |
| 436 } | |
| 437 | |
| 509 | 438 regex_end->code = ngx_http_script_regex_end_code; |
| 485 | 439 regex_end->uri = regex->uri; |
| 440 regex_end->args = regex->args; | |
| 509 | 441 regex_end->add_args = regex->add_args; |
| 485 | 442 regex_end->redirect = regex->redirect; |
| 443 | |
| 444 if (last) { | |
| 517 | 445 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
| 485 | 446 if (code == NULL) { |
| 447 return NGX_CONF_ERROR; | |
|
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448 } |
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449 |
| 485 | 450 *code = (uintptr_t) NULL; |
| 451 } | |
| 452 | |
| 453 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
| 454 - (u_char *) regex; | |
| 455 | |
| 456 return NGX_CONF_OK; | |
| 457 } | |
| 458 | |
| 459 | |
| 487 | 460 static char * |
| 461 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 485 | 462 { |
| 577 | 463 ngx_http_rewrite_loc_conf_t *lcf = conf; |
|
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464 |
| 509 | 465 ngx_str_t *value; |
| 466 ngx_http_script_return_code_t *ret; | |
| 485 | 467 |
| 509 | 468 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 469 sizeof(ngx_http_script_return_code_t)); | |
| 485 | 470 if (ret == NULL) { |
| 471 return NGX_CONF_ERROR; | |
| 472 } | |
| 473 | |
| 474 value = cf->args->elts; | |
| 475 | |
| 509 | 476 ret->code = ngx_http_script_return_code; |
| 485 | 477 ret->null = (uintptr_t) NULL; |
| 478 | |
| 479 ret->status = ngx_atoi(value[1].data, value[1].len); | |
| 480 | |
| 481 if (ret->status == (uintptr_t) NGX_ERROR) { | |
| 482 return NGX_CONF_ERROR; | |
|
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483 } |
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484 |
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485 return NGX_CONF_OK; |
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f1d0e5f09c1e
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486 } |
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487 |
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f1d0e5f09c1e
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488 |
| 487 | 489 static char * |
| 527 | 490 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| 491 { | |
| 492 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
| 493 | |
| 494 ngx_http_script_code_pt *code; | |
| 495 | |
| 496 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
| 497 if (code == NULL) { | |
| 498 return NGX_CONF_ERROR; | |
| 499 } | |
| 500 | |
| 501 *code = ngx_http_script_break_code; | |
| 502 | |
| 503 return NGX_CONF_OK; | |
| 504 } | |
| 505 | |
| 506 | |
| 507 static char * | |
| 487 | 508 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
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509 { |
| 577 | 510 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 485 | 511 |
| 512 void *mconf; | |
| 513 char *rv; | |
| 514 u_char *elts; | |
| 515 ngx_uint_t i; | |
| 516 ngx_conf_t save; | |
| 517 ngx_http_module_t *module; | |
| 518 ngx_http_conf_ctx_t *ctx, *pctx; | |
| 519 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp; | |
| 509 | 520 ngx_http_script_if_code_t *if_code; |
| 485 | 521 ngx_http_rewrite_loc_conf_t *nlcf; |
| 522 | |
| 501 | 523 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
| 524 if (ctx == NULL) { | |
| 485 | 525 return NGX_CONF_ERROR; |
| 526 } | |
| 527 | |
| 528 pctx = cf->ctx; | |
| 529 ctx->main_conf = pctx->main_conf; | |
| 577 | 530 ctx->srv_conf = pctx->srv_conf; |
| 485 | 531 |
| 532 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 533 if (ctx->loc_conf == NULL) { | |
| 534 return NGX_CONF_ERROR; | |
| 535 } | |
| 536 | |
| 537 for (i = 0; ngx_modules[i]; i++) { | |
| 538 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
| 539 continue; | |
| 540 } | |
| 541 | |
| 542 module = ngx_modules[i]->ctx; | |
| 577 | 543 |
| 485 | 544 if (module->create_loc_conf) { |
| 545 | |
| 501 | 546 mconf = module->create_loc_conf(cf); |
| 547 if (mconf == NULL) { | |
| 485 | 548 return NGX_CONF_ERROR; |
| 549 } | |
| 550 | |
| 551 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
| 552 } | |
| 553 } | |
| 554 | |
| 555 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
| 556 | |
| 557 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
| 558 clcf->loc_conf = ctx->loc_conf; | |
| 559 clcf->name = pclcf->name; | |
| 560 clcf->noname = 1; | |
| 561 | |
| 562 if (pclcf->locations.elts == NULL) { | |
| 563 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *)) | |
| 555 | 564 == NGX_ERROR) |
| 485 | 565 { |
| 566 return NGX_CONF_ERROR; | |
| 567 } | |
| 568 } | |
| 569 | |
| 501 | 570 clcfp = ngx_array_push(&pclcf->locations); |
| 571 if (clcfp == NULL) { | |
| 485 | 572 return NGX_CONF_ERROR; |
| 573 } | |
| 574 | |
| 575 *clcfp = clcf; | |
| 576 | |
| 577 | |
| 501 | 578 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
| 485 | 579 return NGX_CONF_ERROR; |
| 580 } | |
| 581 | |
| 509 | 582 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
| 485 | 583 if (if_code == NULL) { |
| 584 return NULL; | |
| 585 } | |
| 586 | |
| 509 | 587 if_code->code = ngx_http_script_if_code; |
| 485 | 588 |
| 589 elts = lcf->codes->elts; | |
| 590 | |
| 591 | |
| 631 | 592 /* the inner directives must be compiled to the same code array */ |
| 485 | 593 |
| 594 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
| 595 nlcf->codes = lcf->codes; | |
| 596 | |
| 597 | |
| 598 save = *cf; | |
| 599 cf->ctx = ctx; | |
| 600 | |
| 601 if (pclcf->name.len == 0) { | |
| 602 if_code->loc_conf = NULL; | |
| 603 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
| 604 | |
| 605 } else { | |
| 606 if_code->loc_conf = ctx->loc_conf; | |
| 607 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
| 608 } | |
| 609 | |
| 610 rv = ngx_conf_parse(cf, NULL); | |
| 611 | |
| 612 *cf = save; | |
| 613 | |
| 614 if (rv != NGX_CONF_OK) { | |
| 615 return rv; | |
| 616 } | |
| 617 | |
| 618 | |
| 517 | 619 if (lcf->captures < nlcf->captures) { |
| 620 lcf->captures = nlcf->captures; | |
| 621 } | |
| 622 | |
| 623 | |
| 485 | 624 if (elts != lcf->codes->elts) { |
| 509 | 625 if_code = (ngx_http_script_if_code_t *) |
| 485 | 626 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
| 627 } | |
| 628 | |
| 629 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
| 630 - (u_char *) if_code; | |
|
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470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
631 |
| 555 | 632 /* the code array belong to parent block */ |
| 633 | |
| 634 nlcf->codes = NULL; | |
| 635 | |
|
437
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
636 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
|
637 } |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
638 |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
639 |
| 487 | 640 static char * |
| 501 | 641 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
| 642 { | |
| 631 | 643 u_char *p; |
| 644 size_t len; | |
| 509 | 645 ngx_str_t *value, err; |
| 515 | 646 ngx_uint_t cur, last, n; |
| 577 | 647 ngx_http_script_code_pt *code; |
| 631 | 648 ngx_http_script_file_code_t *fop; |
| 509 | 649 ngx_http_script_regex_code_t *regex; |
| 650 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 501 | 651 |
| 652 value = cf->args->elts; | |
| 653 last = cf->args->nelts - 1; | |
| 654 | |
| 655 if (value[1].len < 1 || value[1].data[0] != '(') { | |
| 656 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 657 "invalid condition \"%V\"", &value[1]); | |
| 658 return NGX_CONF_ERROR; | |
| 659 } | |
| 660 | |
| 661 if (value[1].len == 1) { | |
| 662 cur = 2; | |
| 663 | |
| 664 } else { | |
| 665 cur = 1; | |
| 666 value[1].len--; | |
| 667 value[1].data++; | |
| 668 } | |
| 669 | |
| 670 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
| 671 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 672 "invalid condition \"%V\"", &value[last]); | |
| 673 return NGX_CONF_ERROR; | |
| 674 } | |
| 675 | |
| 676 if (value[last].len == 1) { | |
| 677 last--; | |
| 678 | |
| 679 } else { | |
| 680 value[last].len--; | |
| 681 value[last].data[value[last].len] = '\0'; | |
| 682 } | |
| 683 | |
| 631 | 684 len = value[cur].len; |
| 685 p = value[cur].data; | |
| 686 | |
| 687 if (len > 1 && p[0] == '$') { | |
| 501 | 688 |
| 689 if (cur != last && cur + 2 != last) { | |
| 690 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 631 | 691 "invalid condition \"%V\"", &value[cur]); |
| 501 | 692 return NGX_CONF_ERROR; |
| 693 } | |
| 694 | |
| 577 | 695 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { |
| 501 | 696 return NGX_CONF_ERROR; |
| 697 } | |
| 698 | |
| 699 if (cur == last) { | |
| 700 return NGX_CONF_OK; | |
| 701 } | |
| 702 | |
| 703 cur++; | |
| 704 | |
| 631 | 705 len = value[cur].len; |
| 706 p = value[cur].data; | |
| 707 | |
| 708 if (len == 1 && p[0] == '=') { | |
| 577 | 709 |
| 710 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
| 711 return NGX_CONF_ERROR; | |
| 712 } | |
| 713 | |
| 714 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 715 sizeof(uintptr_t)); | |
| 716 if (code == NULL) { | |
| 717 return NGX_CONF_ERROR; | |
| 718 } | |
| 719 | |
| 720 *code = ngx_http_script_equal_code; | |
| 721 | |
| 722 return NGX_CONF_OK; | |
| 501 | 723 } |
| 724 | |
| 631 | 725 if (len == 2 && p[0] == '!' && p[1] == '=') { |
| 726 | |
| 577 | 727 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { |
| 728 return NGX_CONF_ERROR; | |
| 729 } | |
| 730 | |
| 731 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 732 sizeof(uintptr_t)); | |
| 733 if (code == NULL) { | |
| 734 return NGX_CONF_ERROR; | |
| 735 } | |
| 736 | |
| 737 *code = ngx_http_script_not_equal_code; | |
| 738 return NGX_CONF_OK; | |
| 501 | 739 } |
| 740 | |
| 631 | 741 if ((len == 1 && p[0] == '~') |
| 742 || (len == 2 && p[0] == '~' && p[1] == '*') | |
| 743 || (len == 2 && p[0] == '!' && p[1] == '~') | |
| 744 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*')) | |
| 577 | 745 { |
| 746 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 747 sizeof(ngx_http_script_regex_code_t)); | |
| 748 if (regex == NULL) { | |
| 749 return NGX_CONF_ERROR; | |
| 750 } | |
| 509 | 751 |
| 577 | 752 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
| 753 | |
| 754 err.len = NGX_MAX_CONF_ERRSTR; | |
| 755 err.data = errstr; | |
| 756 | |
| 757 regex->regex = ngx_regex_compile(&value[last], | |
| 631 | 758 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0, |
| 759 cf->pool, &err); | |
| 501 | 760 |
| 577 | 761 if (regex->regex == NULL) { |
| 762 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
| 763 return NGX_CONF_ERROR; | |
| 764 } | |
| 765 | |
| 766 regex->code = ngx_http_script_regex_start_code; | |
| 767 regex->next = sizeof(ngx_http_script_regex_code_t); | |
| 768 regex->test = 1; | |
| 631 | 769 if (p[0] == '!') { |
| 770 regex->negative_test = 1; | |
| 771 } | |
| 577 | 772 regex->name = value[last]; |
| 501 | 773 |
| 577 | 774 n = ngx_regex_capture_count(regex->regex); |
| 775 | |
| 776 if (n) { | |
| 777 regex->ncaptures = (n + 1) * 3; | |
| 778 | |
| 779 if (lcf->captures < regex->ncaptures) { | |
| 780 lcf->captures = regex->ncaptures; | |
| 781 } | |
| 782 } | |
| 783 | |
| 784 return NGX_CONF_OK; | |
| 501 | 785 } |
| 786 | |
| 577 | 787 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 788 "unexpected \"%V\" in condition", &value[cur]); | |
| 789 return NGX_CONF_ERROR; | |
| 631 | 790 |
| 791 } else if ((len == 2 && p[0] == '-') | |
| 792 || (len == 3 && p[0] == '!' && p[1] == '-')) | |
| 793 { | |
| 794 if (cur + 1 != last) { | |
| 795 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 796 "invalid condition \"%V\"", &value[cur]); | |
| 797 return NGX_CONF_ERROR; | |
| 798 } | |
| 799 | |
| 800 value[last].data[value[last].len] = '\0'; | |
| 801 value[last].len++; | |
| 802 | |
| 803 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
| 804 return NGX_CONF_ERROR; | |
| 805 } | |
| 806 | |
| 807 fop = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 808 sizeof(ngx_http_script_file_code_t)); | |
| 809 if (fop == NULL) { | |
| 810 return NGX_CONF_ERROR; | |
| 811 } | |
| 812 | |
| 813 fop->code = ngx_http_script_file_code; | |
| 814 | |
| 815 if (p[1] == 'f') { | |
| 816 fop->op = ngx_http_script_file_plain; | |
| 817 return NGX_CONF_OK; | |
| 818 } | |
| 819 | |
| 820 if (p[0] == '!') { | |
| 821 if (p[2] == 'f') { | |
| 822 fop->op = ngx_http_script_file_not_plain; | |
| 823 return NGX_CONF_OK; | |
| 824 } | |
| 825 } | |
| 826 | |
| 827 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 828 "invalid condition \"%V\"", &value[cur]); | |
| 829 return NGX_CONF_ERROR; | |
| 501 | 830 } |
| 831 | |
| 832 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 833 "invalid condition \"%V\"", &value[cur]); | |
| 834 | |
| 835 return NGX_CONF_ERROR; | |
| 836 } | |
| 837 | |
| 838 | |
| 839 static char * | |
| 840 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
| 841 ngx_str_t *value) | |
| 842 { | |
| 509 | 843 ngx_int_t index; |
| 844 ngx_http_script_var_code_t *var_code; | |
| 501 | 845 |
| 846 value->len--; | |
| 847 value->data++; | |
| 848 | |
| 577 | 849 index = ngx_http_get_variable_index(cf, value); |
| 501 | 850 |
| 577 | 851 if (index == NGX_ERROR) { |
| 852 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
|
853 } |
|
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
854 |
| 577 | 855 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 856 sizeof(ngx_http_script_var_code_t)); | |
| 857 if (var_code == NULL) { | |
| 858 return NGX_CONF_ERROR; | |
| 485 | 859 } |
| 860 | |
| 577 | 861 var_code->code = ngx_http_script_var_code; |
| 862 var_code->index = index; | |
| 485 | 863 |
| 864 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
|
865 } |
| 485 | 866 |
| 867 | |
| 501 | 868 static char * |
| 869 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 870 { | |
| 577 | 871 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 501 | 872 |
| 637 | 873 ngx_int_t index; |
| 874 ngx_str_t *value; | |
| 875 ngx_http_variable_t *v; | |
| 876 ngx_http_script_var_code_t *vcode; | |
| 877 ngx_http_script_var_handler_code_t *vhcode; | |
| 501 | 878 |
| 879 value = cf->args->elts; | |
| 880 | |
| 881 if (value[1].data[0] != '$') { | |
| 882 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 883 "invalid variable name \"%V\"", &value[1]); | |
| 884 return NGX_CONF_ERROR; | |
| 885 } | |
| 886 | |
| 887 value[1].len--; | |
| 888 value[1].data++; | |
| 889 | |
| 509 | 890 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGABLE); |
| 501 | 891 if (v == NULL) { |
| 892 return NGX_CONF_ERROR; | |
| 893 } | |
| 894 | |
| 509 | 895 index = ngx_http_get_variable_index(cf, &value[1]); |
| 896 if (index == NGX_ERROR) { | |
| 897 return NGX_CONF_ERROR; | |
| 898 } | |
| 501 | 899 |
| 637 | 900 if (v->get_handler == NULL) { |
| 901 v->get_handler = ngx_http_rewrite_var; | |
| 555 | 902 v->data = index; |
| 903 } | |
| 509 | 904 |
| 577 | 905 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { |
| 906 return NGX_CONF_ERROR; | |
| 515 | 907 } |
| 501 | 908 |
| 637 | 909 if (v->set_handler) { |
| 910 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 911 sizeof(ngx_http_script_var_handler_code_t)); | |
| 912 if (vhcode == NULL) { | |
| 913 return NGX_CONF_ERROR; | |
| 914 } | |
| 915 | |
| 916 vhcode->code = ngx_http_script_var_set_handler_code; | |
| 917 vhcode->handler = v->set_handler; | |
| 918 vhcode->data = v->data; | |
| 919 | |
| 920 return NGX_CONF_OK; | |
| 921 } | |
| 922 | |
| 923 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 924 sizeof(ngx_http_script_var_code_t)); | |
| 925 if (vcode == NULL) { | |
| 501 | 926 return NGX_CONF_ERROR; |
| 927 } | |
| 928 | |
| 637 | 929 vcode->code = ngx_http_script_set_var_code; |
| 930 vcode->index = (uintptr_t) index; | |
| 501 | 931 |
| 932 return NGX_CONF_OK; | |
| 933 } | |
| 577 | 934 |
| 935 | |
| 936 static char * | |
| 937 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
| 938 ngx_str_t *value) | |
| 939 { | |
| 940 ngx_int_t n; | |
| 941 ngx_http_script_compile_t sc; | |
| 942 ngx_http_script_value_code_t *val; | |
| 943 ngx_http_script_complex_value_code_t *complex; | |
| 944 | |
| 945 n = ngx_http_script_variables_count(value); | |
| 946 | |
| 947 if (n == 0) { | |
| 948 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 949 sizeof(ngx_http_script_value_code_t)); | |
| 950 if (val == NULL) { | |
| 951 return NGX_CONF_ERROR; | |
| 952 } | |
| 953 | |
| 954 n = ngx_atoi(value->data, value->len); | |
| 955 | |
| 956 if (n == NGX_ERROR) { | |
| 957 n = 0; | |
| 958 } | |
| 959 | |
| 960 val->code = ngx_http_script_value_code; | |
| 961 val->value = (uintptr_t) n; | |
| 962 val->text_len = (uintptr_t) value->len; | |
| 963 val->text_data = (uintptr_t) value->data; | |
| 964 | |
| 965 return NGX_CONF_OK; | |
| 966 } | |
| 967 | |
| 968 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 969 sizeof(ngx_http_script_complex_value_code_t)); | |
| 970 if (complex == NULL) { | |
| 971 return NGX_CONF_ERROR; | |
| 972 } | |
| 973 | |
| 974 complex->code = ngx_http_script_complex_value_code; | |
| 975 complex->lengths = NULL; | |
| 976 | |
| 977 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 978 | |
| 979 sc.cf = cf; | |
| 980 sc.source = value; | |
| 981 sc.lengths = &complex->lengths; | |
| 982 sc.values = &lcf->codes; | |
| 983 sc.variables = n; | |
| 984 sc.complete_lengths = 1; | |
| 985 | |
| 986 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 987 return NGX_CONF_ERROR; | |
| 988 } | |
| 989 | |
| 990 return NGX_CONF_OK; | |
| 991 } |