Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 577:4d9ea73a627a release-0.3.10
nginx-0.3.10-RELEASE import
*) Change: the "valid_referers" directive and the "$invalid_referer"
variable were moved to the new ngx_http_referer_module from the
ngx_http_rewrite_module.
*) Change: the "$apache_bytes_sent" variable name was changed to
"$body_bytes_sent".
*) Feature: the "$sent_http_..." variables.
*) Feature: the "if" directive supports the "=" and "!=" operations.
*) Feature: the "proxy_pass" directive supports the HTTPS protocol.
*) Feature: the "proxy_set_body" directive.
*) Feature: the "post_action" directive.
*) Feature: the ngx_http_empty_gif_module.
*) Feature: the "worker_cpu_affinity" directive for Linux.
*) Bugfix: the "rewrite" directive did not unescape URI part in
redirect, now it is unescaped except the %00-%25 and %7F-%FF
characters.
*) Bugfix: nginx could not be built by the icc 9.0 compiler.
*) Bugfix: if the SSI was enabled for zero size static file, then the
chunked response was encoded incorrectly.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 15 Nov 2005 13:30:52 +0000 |
| parents | 58475592100c |
| children | 5d2b8078c1c2 |
| 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; |
| 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); |
| 509 | 25 static ngx_int_t ngx_http_rewrite_init(ngx_cycle_t *cycle); |
| 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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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 | |
| 577 | 76 #if 0 |
| 485 | 77 { ngx_string("valid_referers"), |
| 78 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 79 ngx_http_rewrite_valid_referers, | |
| 80 NGX_HTTP_LOC_CONF_OFFSET, | |
| 81 0, | |
| 82 NULL }, | |
| 577 | 83 #endif |
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84 |
| 501 | 85 { ngx_string("set"), |
| 86 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF | |
| 87 |NGX_CONF_TAKE2, | |
| 88 ngx_http_rewrite_set, | |
| 89 NGX_HTTP_LOC_CONF_OFFSET, | |
| 90 0, | |
| 91 NULL }, | |
| 92 | |
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93 { ngx_string("rewrite_log"), |
| 485 | 94 NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |
| 95 |NGX_CONF_TAKE1, | |
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96 ngx_conf_set_flag_slot, |
| 485 | 97 NGX_HTTP_LOC_CONF_OFFSET, |
| 98 offsetof(ngx_http_rewrite_loc_conf_t, log), | |
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99 NULL }, |
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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; | |
| 485 | 141 ngx_http_rewrite_loc_conf_t *cf; |
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142 |
| 485 | 143 cf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); |
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144 |
| 485 | 145 if (cf->codes == NULL) { |
| 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, |
| 155 cf->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 |
| 515 | 160 if (cf->captures) { |
| 161 e->captures = ngx_palloc(r->pool, cf->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 | |
| 170 e->ip = cf->codes->elts; | |
| 509 | 171 e->request = r; |
| 485 | 172 e->quote = 1; |
| 509 | 173 e->log = cf->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 { |
| 189 ngx_http_variable_t *var; | |
| 190 ngx_http_core_main_conf_t *cmcf; | |
| 191 | |
| 192 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
| 193 | |
| 194 var = cmcf->variables.elts; | |
| 195 | |
| 196 /* | |
| 197 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
| 519 | 198 * and they should be handled by ngx_http_get_indexed_variable(), |
| 501 | 199 * so the handler is called only if the variable is not initialized |
| 200 */ | |
| 201 | |
| 202 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
| 203 "using uninitialized \"%V\" variable", &var[data].name); | |
| 204 | |
| 577 | 205 *v = ngx_http_variable_null_value; |
| 573 | 206 |
| 207 return NGX_OK; | |
| 501 | 208 } |
| 209 | |
| 210 | |
| 487 | 211 static void * |
| 212 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
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213 { |
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214 ngx_http_rewrite_loc_conf_t *conf; |
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215 |
| 501 | 216 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
| 217 if (conf == NULL) { | |
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218 return NGX_CONF_ERROR; |
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219 } |
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220 |
| 485 | 221 conf->stack_size = NGX_CONF_UNSET_UINT; |
| 222 conf->log = NGX_CONF_UNSET; | |
| 223 | |
|
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224 return conf; |
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225 } |
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226 |
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227 |
| 487 | 228 static char * |
| 229 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
|
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230 { |
| 485 | 231 ngx_http_rewrite_loc_conf_t *prev = parent; |
| 232 ngx_http_rewrite_loc_conf_t *conf = child; | |
| 233 | |
| 509 | 234 uintptr_t *code; |
| 485 | 235 |
| 236 ngx_conf_merge_value(conf->log, prev->log, 0); | |
| 237 ngx_conf_merge_unsigned_value(conf->stack_size, prev->stack_size, 10); | |
| 238 | |
| 239 if (conf->codes == NULL) { | |
| 240 return NGX_CONF_OK; | |
| 241 } | |
| 242 | |
| 243 if (conf->codes == prev->codes) { | |
| 244 return NGX_CONF_OK; | |
| 245 } | |
| 246 | |
| 501 | 247 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
| 248 if (code == NULL) { | |
|
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249 return NGX_CONF_ERROR; |
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250 } |
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251 |
| 485 | 252 *code = (uintptr_t) NULL; |
| 253 | |
| 254 return NGX_CONF_OK; | |
| 255 } | |
| 256 | |
|
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257 |
| 509 | 258 static ngx_int_t |
| 259 ngx_http_rewrite_init(ngx_cycle_t *cycle) | |
| 577 | 260 { |
| 509 | 261 ngx_http_handler_pt *h; |
| 262 ngx_http_core_main_conf_t *cmcf; | |
| 263 | |
| 264 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); | |
| 265 | |
| 573 | 266 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
| 267 if (h == NULL) { | |
| 268 return NGX_ERROR; | |
| 269 } | |
| 270 | |
| 271 *h = ngx_http_rewrite_handler; | |
| 272 | |
| 509 | 273 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
| 274 if (h == NULL) { | |
| 275 return NGX_ERROR; | |
| 276 } | |
| 277 | |
| 278 *h = ngx_http_rewrite_handler; | |
| 279 | |
| 280 return NGX_OK; | |
| 577 | 281 } |
| 509 | 282 |
| 283 | |
| 487 | 284 static char * |
| 285 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 485 | 286 { |
| 577 | 287 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 288 | |
| 509 | 289 ngx_str_t *value, err; |
| 290 ngx_int_t n; | |
| 291 ngx_uint_t last; | |
| 292 ngx_http_script_code_pt *code; | |
| 293 ngx_http_script_compile_t sc; | |
| 294 ngx_http_script_regex_code_t *regex; | |
| 295 ngx_http_script_regex_end_code_t *regex_end; | |
| 296 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 485 | 297 |
| 509 | 298 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 299 sizeof(ngx_http_script_regex_code_t)); | |
| 485 | 300 if (regex == NULL) { |
| 301 return NGX_CONF_ERROR; | |
| 302 } | |
|
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303 |
| 509 | 304 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
| 305 | |
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306 value = cf->args->elts; |
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307 |
| 485 | 308 err.len = NGX_MAX_CONF_ERRSTR; |
| 309 err.data = errstr; | |
| 310 | |
| 311 /* TODO: NGX_REGEX_CASELESS */ | |
| 312 | |
| 313 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
| 314 | |
| 315 if (regex->regex == NULL) { | |
| 316 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
| 317 return NGX_CONF_ERROR; | |
| 318 } | |
| 319 | |
| 509 | 320 regex->code = ngx_http_script_regex_start_code; |
| 485 | 321 regex->uri = 1; |
| 322 regex->name = value[1]; | |
|
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323 |
| 509 | 324 if (value[2].data[value[2].len - 1] == '?') { |
| 325 | |
| 326 /* the last "?" drops the original arguments */ | |
| 327 value[2].len--; | |
| 328 | |
| 329 } else { | |
| 330 regex->add_args = 1; | |
| 331 } | |
| 332 | |
| 485 | 333 last = 0; |
| 334 | |
| 335 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) { | |
| 336 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
| 337 regex->redirect = 1; | |
| 338 last = 1; | |
| 339 } | |
| 340 | |
| 341 if (cf->args->nelts == 4) { | |
| 342 if (ngx_strcmp(value[3].data, "last") == 0) { | |
| 343 last = 1; | |
|
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344 |
| 487 | 345 } else if (ngx_strcmp(value[3].data, "break") == 0) { |
| 346 regex->break_cycle = 1; | |
| 347 last = 1; | |
| 348 | |
| 485 | 349 } else if (ngx_strcmp(value[3].data, "redirect") == 0) { |
| 350 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
| 351 regex->redirect = 1; | |
| 352 last = 1; | |
|
326
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353 |
| 485 | 354 } else if (ngx_strcmp(value[3].data, "permanent") == 0) { |
| 355 regex->status = NGX_HTTP_MOVED_PERMANENTLY; | |
| 356 regex->redirect = 1; | |
| 357 last = 1; | |
|
326
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358 |
| 485 | 359 } else { |
|
326
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360 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 461 | 361 "invalid parameter \"%V\"", &value[3]); |
|
326
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362 return NGX_CONF_ERROR; |
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363 } |
| 485 | 364 } |
|
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365 |
| 509 | 366 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| 485 | 367 |
| 509 | 368 sc.cf = cf; |
| 369 sc.source = &value[2]; | |
| 370 sc.lengths = ®ex->lengths; | |
| 371 sc.values = &lcf->codes; | |
| 372 sc.variables = ngx_http_script_variables_count(&value[2]); | |
| 373 sc.main = regex; | |
| 374 sc.complete_lengths = 1; | |
| 375 sc.compile_args = !regex->redirect; | |
| 485 | 376 |
| 509 | 377 if (ngx_http_script_compile(&sc) != NGX_OK) { |
| 378 return NGX_CONF_ERROR; | |
| 379 } | |
| 485 | 380 |
| 509 | 381 regex = sc.main; |
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382 |
| 509 | 383 regex->ncaptures = sc.ncaptures; |
| 384 regex->size = sc.size; | |
| 385 regex->args = sc.args; | |
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386 |
| 509 | 387 if (sc.variables == 0) { |
| 388 regex->lengths = NULL; | |
| 485 | 389 } |
| 390 | |
| 391 n = ngx_regex_capture_count(regex->regex); | |
| 392 | |
| 501 | 393 if (n < 0) { |
| 394 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 395 ngx_regex_capture_count_n " failed for " | |
| 396 "pattern \"%V\"", &value[1]); | |
| 397 return NGX_CONF_ERROR; | |
| 398 } | |
| 399 | |
| 400 if (regex->ncaptures > (ngx_uint_t) n) { | |
| 485 | 401 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 402 "pattern \"%V\" has less captures " | |
| 403 "than referrenced in substitution \"%V\"", | |
| 404 &value[1], &value[2]); | |
| 405 return NGX_CONF_ERROR; | |
| 406 } | |
| 407 | |
| 501 | 408 if (regex->ncaptures < (ngx_uint_t) n) { |
| 409 regex->ncaptures = (ngx_uint_t) n; | |
| 485 | 410 } |
| 481 | 411 |
| 485 | 412 if (regex->ncaptures) { |
| 413 regex->ncaptures = (regex->ncaptures + 1) * 3; | |
| 414 | |
| 515 | 415 if (lcf->captures < regex->ncaptures) { |
| 416 lcf->captures = regex->ncaptures; | |
| 417 } | |
| 509 | 418 } |
| 419 | |
| 420 regex_end = ngx_http_script_add_code(lcf->codes, | |
| 421 sizeof(ngx_http_script_regex_end_code_t), | |
| 422 ®ex); | |
| 485 | 423 if (regex_end == NULL) { |
| 424 return NGX_CONF_ERROR; | |
| 425 } | |
| 426 | |
| 509 | 427 regex_end->code = ngx_http_script_regex_end_code; |
| 485 | 428 regex_end->uri = regex->uri; |
| 429 regex_end->args = regex->args; | |
| 509 | 430 regex_end->add_args = regex->add_args; |
| 485 | 431 regex_end->redirect = regex->redirect; |
| 432 | |
| 433 if (last) { | |
| 517 | 434 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
| 485 | 435 if (code == NULL) { |
| 436 return NGX_CONF_ERROR; | |
|
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437 } |
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438 |
| 485 | 439 *code = (uintptr_t) NULL; |
| 440 } | |
| 441 | |
| 442 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
| 443 - (u_char *) regex; | |
| 444 | |
| 445 return NGX_CONF_OK; | |
| 446 } | |
| 447 | |
| 448 | |
| 487 | 449 static char * |
| 450 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 485 | 451 { |
| 577 | 452 ngx_http_rewrite_loc_conf_t *lcf = conf; |
|
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453 |
| 509 | 454 ngx_str_t *value; |
| 455 ngx_http_script_return_code_t *ret; | |
| 485 | 456 |
| 509 | 457 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 458 sizeof(ngx_http_script_return_code_t)); | |
| 485 | 459 if (ret == NULL) { |
| 460 return NGX_CONF_ERROR; | |
| 461 } | |
| 462 | |
| 463 value = cf->args->elts; | |
| 464 | |
| 509 | 465 ret->code = ngx_http_script_return_code; |
| 485 | 466 ret->null = (uintptr_t) NULL; |
| 467 | |
| 468 ret->status = ngx_atoi(value[1].data, value[1].len); | |
| 469 | |
| 470 if (ret->status == (uintptr_t) NGX_ERROR) { | |
| 471 return NGX_CONF_ERROR; | |
|
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472 } |
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473 |
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474 return NGX_CONF_OK; |
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475 } |
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476 |
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|
477 |
| 487 | 478 static char * |
| 527 | 479 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| 480 { | |
| 481 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
| 482 | |
| 483 ngx_http_script_code_pt *code; | |
| 484 | |
| 485 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
| 486 if (code == NULL) { | |
| 487 return NGX_CONF_ERROR; | |
| 488 } | |
| 489 | |
| 490 *code = ngx_http_script_break_code; | |
| 491 | |
| 492 return NGX_CONF_OK; | |
| 493 } | |
| 494 | |
| 495 | |
| 496 static char * | |
| 487 | 497 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
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498 { |
| 577 | 499 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 485 | 500 |
| 501 void *mconf; | |
| 502 char *rv; | |
| 503 u_char *elts; | |
| 504 ngx_uint_t i; | |
| 505 ngx_conf_t save; | |
| 506 ngx_http_module_t *module; | |
| 507 ngx_http_conf_ctx_t *ctx, *pctx; | |
| 508 ngx_http_core_loc_conf_t *clcf, *pclcf, **clcfp; | |
| 509 | 509 ngx_http_script_if_code_t *if_code; |
| 485 | 510 ngx_http_rewrite_loc_conf_t *nlcf; |
| 511 | |
| 501 | 512 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
| 513 if (ctx == NULL) { | |
| 485 | 514 return NGX_CONF_ERROR; |
| 515 } | |
| 516 | |
| 517 pctx = cf->ctx; | |
| 518 ctx->main_conf = pctx->main_conf; | |
| 577 | 519 ctx->srv_conf = pctx->srv_conf; |
| 485 | 520 |
| 521 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 522 if (ctx->loc_conf == NULL) { | |
| 523 return NGX_CONF_ERROR; | |
| 524 } | |
| 525 | |
| 526 for (i = 0; ngx_modules[i]; i++) { | |
| 527 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
| 528 continue; | |
| 529 } | |
| 530 | |
| 531 module = ngx_modules[i]->ctx; | |
| 577 | 532 |
| 485 | 533 if (module->create_loc_conf) { |
| 534 | |
| 501 | 535 mconf = module->create_loc_conf(cf); |
| 536 if (mconf == NULL) { | |
| 485 | 537 return NGX_CONF_ERROR; |
| 538 } | |
| 539 | |
| 540 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
| 545 | |
| 546 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
| 547 clcf->loc_conf = ctx->loc_conf; | |
| 548 clcf->name = pclcf->name; | |
| 549 clcf->noname = 1; | |
| 550 | |
| 551 if (pclcf->locations.elts == NULL) { | |
| 552 if (ngx_array_init(&pclcf->locations, cf->pool, 4, sizeof(void *)) | |
| 555 | 553 == NGX_ERROR) |
| 485 | 554 { |
| 555 return NGX_CONF_ERROR; | |
| 556 } | |
| 557 } | |
| 558 | |
| 501 | 559 clcfp = ngx_array_push(&pclcf->locations); |
| 560 if (clcfp == NULL) { | |
| 485 | 561 return NGX_CONF_ERROR; |
| 562 } | |
| 563 | |
| 564 *clcfp = clcf; | |
| 565 | |
| 566 | |
| 501 | 567 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
| 485 | 568 return NGX_CONF_ERROR; |
| 569 } | |
| 570 | |
| 509 | 571 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
| 485 | 572 if (if_code == NULL) { |
| 573 return NULL; | |
| 574 } | |
| 575 | |
| 509 | 576 if_code->code = ngx_http_script_if_code; |
| 485 | 577 |
| 578 elts = lcf->codes->elts; | |
| 579 | |
| 580 | |
| 581 /* the inside directives must compile to the same code array */ | |
| 582 | |
| 583 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
| 584 nlcf->codes = lcf->codes; | |
| 585 | |
| 586 | |
| 587 save = *cf; | |
| 588 cf->ctx = ctx; | |
| 589 | |
| 590 if (pclcf->name.len == 0) { | |
| 591 if_code->loc_conf = NULL; | |
| 592 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
| 593 | |
| 594 } else { | |
| 595 if_code->loc_conf = ctx->loc_conf; | |
| 596 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
| 597 } | |
| 598 | |
| 599 rv = ngx_conf_parse(cf, NULL); | |
| 600 | |
| 601 *cf = save; | |
| 602 | |
| 603 if (rv != NGX_CONF_OK) { | |
| 604 return rv; | |
| 605 } | |
| 606 | |
| 607 | |
| 517 | 608 if (lcf->captures < nlcf->captures) { |
| 609 lcf->captures = nlcf->captures; | |
| 610 } | |
| 611 | |
| 612 | |
| 485 | 613 if (elts != lcf->codes->elts) { |
| 509 | 614 if_code = (ngx_http_script_if_code_t *) |
| 485 | 615 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
| 616 } | |
| 617 | |
| 618 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
| 619 - (u_char *) if_code; | |
|
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620 |
| 555 | 621 /* the code array belong to parent block */ |
| 622 | |
| 623 nlcf->codes = NULL; | |
| 624 | |
|
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changeset
|
625 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
|
626 } |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
627 |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
628 |
| 487 | 629 static char * |
| 501 | 630 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
| 631 { | |
| 509 | 632 ngx_str_t *value, err; |
| 515 | 633 ngx_uint_t cur, last, n; |
| 577 | 634 ngx_http_script_code_pt *code; |
| 509 | 635 ngx_http_script_regex_code_t *regex; |
| 636 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 501 | 637 |
| 638 value = cf->args->elts; | |
| 639 last = cf->args->nelts - 1; | |
| 640 | |
| 641 if (value[1].len < 1 || value[1].data[0] != '(') { | |
| 642 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 643 "invalid condition \"%V\"", &value[1]); | |
| 644 return NGX_CONF_ERROR; | |
| 645 } | |
| 646 | |
| 647 if (value[1].len == 1) { | |
| 648 cur = 2; | |
| 649 | |
| 650 } else { | |
| 651 cur = 1; | |
| 652 value[1].len--; | |
| 653 value[1].data++; | |
| 654 } | |
| 655 | |
| 656 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
| 657 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 658 "invalid condition \"%V\"", &value[last]); | |
| 659 return NGX_CONF_ERROR; | |
| 660 } | |
| 661 | |
| 662 if (value[last].len == 1) { | |
| 663 last--; | |
| 664 | |
| 665 } else { | |
| 666 value[last].len--; | |
| 667 value[last].data[value[last].len] = '\0'; | |
| 668 } | |
| 669 | |
| 670 if (value[cur].len > 1 && value[cur].data[0] == '$') { | |
| 671 | |
| 672 if (cur != last && cur + 2 != last) { | |
| 673 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 674 "invalid condition \"%V\"", &value[cur]); | |
| 675 return NGX_CONF_ERROR; | |
| 676 } | |
| 677 | |
| 577 | 678 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { |
| 501 | 679 return NGX_CONF_ERROR; |
| 680 } | |
| 681 | |
| 682 if (cur == last) { | |
| 683 return NGX_CONF_OK; | |
| 684 } | |
| 685 | |
| 686 cur++; | |
| 687 | |
| 577 | 688 if (value[cur].len == 1 && value[cur].data[0] == '=') { |
| 689 | |
| 690 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
| 691 return NGX_CONF_ERROR; | |
| 692 } | |
| 693 | |
| 694 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 695 sizeof(uintptr_t)); | |
| 696 if (code == NULL) { | |
| 697 return NGX_CONF_ERROR; | |
| 698 } | |
| 699 | |
| 700 *code = ngx_http_script_equal_code; | |
| 701 | |
| 702 return NGX_CONF_OK; | |
| 501 | 703 } |
| 704 | |
| 577 | 705 if (value[cur].len == 2 |
| 706 && value[cur].data[0] == '!' && value[cur].data[1] == '=') | |
| 707 { | |
| 708 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
| 709 return NGX_CONF_ERROR; | |
| 710 } | |
| 711 | |
| 712 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 713 sizeof(uintptr_t)); | |
| 714 if (code == NULL) { | |
| 715 return NGX_CONF_ERROR; | |
| 716 } | |
| 717 | |
| 718 *code = ngx_http_script_not_equal_code; | |
| 719 return NGX_CONF_OK; | |
| 501 | 720 } |
| 721 | |
| 577 | 722 if ((value[cur].len == 1 && value[cur].data[0] == '~') |
| 723 || (value[cur].len == 2 | |
| 724 && value[cur].data[0] == '~' && value[cur].data[1] == '*')) | |
| 725 { | |
| 726 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 727 sizeof(ngx_http_script_regex_code_t)); | |
| 728 if (regex == NULL) { | |
| 729 return NGX_CONF_ERROR; | |
| 730 } | |
| 509 | 731 |
| 577 | 732 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
| 733 | |
| 734 err.len = NGX_MAX_CONF_ERRSTR; | |
| 735 err.data = errstr; | |
| 736 | |
| 737 regex->regex = ngx_regex_compile(&value[last], | |
| 738 (value[cur].len == 2) ? NGX_REGEX_CASELESS : 0, | |
| 739 cf->pool, &err); | |
| 501 | 740 |
| 577 | 741 if (regex->regex == NULL) { |
| 742 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
| 743 return NGX_CONF_ERROR; | |
| 744 } | |
| 745 | |
| 746 regex->code = ngx_http_script_regex_start_code; | |
| 747 regex->next = sizeof(ngx_http_script_regex_code_t); | |
| 748 regex->test = 1; | |
| 749 regex->name = value[last]; | |
| 501 | 750 |
| 577 | 751 n = ngx_regex_capture_count(regex->regex); |
| 752 | |
| 753 if (n) { | |
| 754 regex->ncaptures = (n + 1) * 3; | |
| 755 | |
| 756 if (lcf->captures < regex->ncaptures) { | |
| 757 lcf->captures = regex->ncaptures; | |
| 758 } | |
| 759 } | |
| 760 | |
| 761 return NGX_CONF_OK; | |
| 501 | 762 } |
| 763 | |
| 577 | 764 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 765 "unexpected \"%V\" in condition", &value[cur]); | |
| 766 return NGX_CONF_ERROR; | |
| 501 | 767 } |
| 768 | |
| 769 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 770 "invalid condition \"%V\"", &value[cur]); | |
| 771 | |
| 772 return NGX_CONF_ERROR; | |
| 773 } | |
| 774 | |
| 775 | |
| 776 static char * | |
| 777 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
| 778 ngx_str_t *value) | |
| 779 { | |
| 509 | 780 ngx_int_t index; |
| 781 ngx_http_script_var_code_t *var_code; | |
| 501 | 782 |
| 783 value->len--; | |
| 784 value->data++; | |
| 785 | |
| 577 | 786 index = ngx_http_get_variable_index(cf, value); |
| 501 | 787 |
| 577 | 788 if (index == NGX_ERROR) { |
| 789 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
|
790 } |
|
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
791 |
| 577 | 792 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 793 sizeof(ngx_http_script_var_code_t)); | |
| 794 if (var_code == NULL) { | |
| 795 return NGX_CONF_ERROR; | |
| 485 | 796 } |
| 797 | |
| 577 | 798 var_code->code = ngx_http_script_var_code; |
| 799 var_code->index = index; | |
| 485 | 800 |
| 801 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
|
802 } |
| 485 | 803 |
| 804 | |
| 501 | 805 static char * |
| 806 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 807 { | |
| 577 | 808 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 501 | 809 |
| 577 | 810 ngx_int_t index; |
| 811 ngx_str_t *value; | |
| 812 ngx_http_variable_t *v; | |
| 813 ngx_http_script_var_code_t *var; | |
| 501 | 814 |
| 815 value = cf->args->elts; | |
| 816 | |
| 817 if (value[1].data[0] != '$') { | |
| 818 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 819 "invalid variable name \"%V\"", &value[1]); | |
| 820 return NGX_CONF_ERROR; | |
| 821 } | |
| 822 | |
| 823 value[1].len--; | |
| 824 value[1].data++; | |
| 825 | |
| 509 | 826 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGABLE); |
| 501 | 827 if (v == NULL) { |
| 828 return NGX_CONF_ERROR; | |
| 829 } | |
| 830 | |
| 509 | 831 index = ngx_http_get_variable_index(cf, &value[1]); |
| 832 if (index == NGX_ERROR) { | |
| 833 return NGX_CONF_ERROR; | |
| 834 } | |
| 501 | 835 |
| 555 | 836 if (v->handler == NULL) { |
| 837 v->handler = ngx_http_rewrite_var; | |
| 838 v->data = index; | |
| 839 } | |
| 509 | 840 |
| 577 | 841 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { |
| 842 return NGX_CONF_ERROR; | |
| 515 | 843 } |
| 501 | 844 |
| 509 | 845 var = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 846 sizeof(ngx_http_script_var_code_t)); | |
| 501 | 847 if (var == NULL) { |
| 848 return NGX_CONF_ERROR; | |
| 849 } | |
| 850 | |
| 509 | 851 var->code = ngx_http_script_set_var_code; |
| 852 var->index = (uintptr_t) index; | |
| 501 | 853 |
| 854 return NGX_CONF_OK; | |
| 855 } | |
| 577 | 856 |
| 857 | |
| 858 static char * | |
| 859 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
| 860 ngx_str_t *value) | |
| 861 { | |
| 862 ngx_int_t n; | |
| 863 ngx_http_script_compile_t sc; | |
| 864 ngx_http_script_value_code_t *val; | |
| 865 ngx_http_script_complex_value_code_t *complex; | |
| 866 | |
| 867 n = ngx_http_script_variables_count(value); | |
| 868 | |
| 869 if (n == 0) { | |
| 870 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 871 sizeof(ngx_http_script_value_code_t)); | |
| 872 if (val == NULL) { | |
| 873 return NGX_CONF_ERROR; | |
| 874 } | |
| 875 | |
| 876 n = ngx_atoi(value->data, value->len); | |
| 877 | |
| 878 if (n == NGX_ERROR) { | |
| 879 n = 0; | |
| 880 } | |
| 881 | |
| 882 val->code = ngx_http_script_value_code; | |
| 883 val->value = (uintptr_t) n; | |
| 884 val->text_len = (uintptr_t) value->len; | |
| 885 val->text_data = (uintptr_t) value->data; | |
| 886 | |
| 887 return NGX_CONF_OK; | |
| 888 } | |
| 889 | |
| 890 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 891 sizeof(ngx_http_script_complex_value_code_t)); | |
| 892 if (complex == NULL) { | |
| 893 return NGX_CONF_ERROR; | |
| 894 } | |
| 895 | |
| 896 complex->code = ngx_http_script_complex_value_code; | |
| 897 complex->lengths = NULL; | |
| 898 | |
| 899 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 900 | |
| 901 sc.cf = cf; | |
| 902 sc.source = value; | |
| 903 sc.lengths = &complex->lengths; | |
| 904 sc.values = &lcf->codes; | |
| 905 sc.variables = n; | |
| 906 sc.complete_lengths = 1; | |
| 907 | |
| 908 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 909 return NGX_CONF_ERROR; | |
| 910 } | |
| 911 | |
| 912 return NGX_CONF_OK; | |
| 913 } |