Mercurial > hg > nginx
annotate src/http/modules/ngx_http_rewrite_module.c @ 2027:f321b59ae0e9
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| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Sat, 24 May 2008 14:14:13 +0000 |
| parents | 4c43e25d11ea |
| children | 989176d3ffc5 |
| 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); |
| 681 | 26 static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf); |
| 485 | 27 static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
| 28 static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 487 | 29 void *conf); |
| 527 | 30 static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, |
| 31 void *conf); | |
| 485 | 32 static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, |
| 487 | 33 void *conf); |
| 501 | 34 static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, |
| 35 ngx_http_rewrite_loc_conf_t *lcf); | |
| 36 static char *ngx_http_rewrite_variable(ngx_conf_t *cf, | |
| 37 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
| 509 | 38 static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, |
| 501 | 39 void *conf); |
| 577 | 40 static char * ngx_http_rewrite_value(ngx_conf_t *cf, |
| 41 ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); | |
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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 |
| 667 | 105 static ngx_http_module_t ngx_http_rewrite_module_ctx = { |
| 509 | 106 NULL, /* preconfiguration */ |
| 681 | 107 ngx_http_rewrite_init, /* 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 */ |
| 681 | 126 NULL, /* init module */ |
| 541 | 127 NULL, /* init process */ |
| 128 NULL, /* init thread */ | |
| 129 NULL, /* exit thread */ | |
| 130 NULL, /* exit process */ | |
| 131 NULL, /* exit master */ | |
| 132 NGX_MODULE_V1_PADDING | |
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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 | |
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181 if (e->status == NGX_DECLINED) { |
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182 return NGX_DECLINED; |
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183 } |
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184 |
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185 if (r->err_status == 0) { |
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186 return e->status; |
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187 } |
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188 |
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189 return r->err_status; |
| 485 | 190 } |
| 191 | |
| 192 | |
| 573 | 193 static ngx_int_t |
| 194 ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
| 195 uintptr_t data) | |
| 501 | 196 { |
| 635 | 197 ngx_http_variable_t *var; |
| 198 ngx_http_core_main_conf_t *cmcf; | |
| 199 ngx_http_rewrite_loc_conf_t *rlcf; | |
| 200 | |
| 201 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); | |
| 202 | |
| 203 if (rlcf->uninitialized_variable_warn == 0) { | |
| 204 *v = ngx_http_variable_null_value; | |
| 205 return NGX_OK; | |
| 206 } | |
| 501 | 207 |
| 208 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
| 209 | |
| 210 var = cmcf->variables.elts; | |
| 211 | |
| 212 /* | |
| 213 * the ngx_http_rewrite_module sets variables directly in r->variables, | |
| 519 | 214 * and they should be handled by ngx_http_get_indexed_variable(), |
| 501 | 215 * so the handler is called only if the variable is not initialized |
| 216 */ | |
| 217 | |
| 635 | 218 ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, |
| 501 | 219 "using uninitialized \"%V\" variable", &var[data].name); |
| 220 | |
| 577 | 221 *v = ngx_http_variable_null_value; |
| 573 | 222 |
| 223 return NGX_OK; | |
| 501 | 224 } |
| 225 | |
| 226 | |
| 487 | 227 static void * |
| 228 ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) | |
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229 { |
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230 ngx_http_rewrite_loc_conf_t *conf; |
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231 |
| 501 | 232 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); |
| 233 if (conf == NULL) { | |
|
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234 return NGX_CONF_ERROR; |
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235 } |
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236 |
| 485 | 237 conf->stack_size = NGX_CONF_UNSET_UINT; |
| 238 conf->log = NGX_CONF_UNSET; | |
| 635 | 239 conf->uninitialized_variable_warn = NGX_CONF_UNSET; |
| 485 | 240 |
|
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241 return conf; |
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242 } |
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243 |
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244 |
| 487 | 245 static char * |
| 246 ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
|
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247 { |
| 485 | 248 ngx_http_rewrite_loc_conf_t *prev = parent; |
| 249 ngx_http_rewrite_loc_conf_t *conf = child; | |
| 250 | |
| 509 | 251 uintptr_t *code; |
| 485 | 252 |
| 253 ngx_conf_merge_value(conf->log, prev->log, 0); | |
| 635 | 254 ngx_conf_merge_value(conf->uninitialized_variable_warn, |
| 255 prev->uninitialized_variable_warn, 1); | |
| 663 | 256 ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10); |
| 485 | 257 |
| 258 if (conf->codes == NULL) { | |
| 259 return NGX_CONF_OK; | |
| 260 } | |
| 261 | |
| 262 if (conf->codes == prev->codes) { | |
| 263 return NGX_CONF_OK; | |
| 264 } | |
| 265 | |
| 501 | 266 code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); |
| 267 if (code == NULL) { | |
|
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268 return NGX_CONF_ERROR; |
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269 } |
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270 |
| 485 | 271 *code = (uintptr_t) NULL; |
| 272 | |
| 273 return NGX_CONF_OK; | |
| 274 } | |
| 275 | |
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276 |
| 509 | 277 static ngx_int_t |
| 681 | 278 ngx_http_rewrite_init(ngx_conf_t *cf) |
| 577 | 279 { |
| 509 | 280 ngx_http_handler_pt *h; |
| 281 ngx_http_core_main_conf_t *cmcf; | |
| 282 | |
| 681 | 283 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| 509 | 284 |
| 573 | 285 h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); |
| 286 if (h == NULL) { | |
| 287 return NGX_ERROR; | |
| 288 } | |
| 289 | |
| 290 *h = ngx_http_rewrite_handler; | |
| 291 | |
| 509 | 292 h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); |
| 293 if (h == NULL) { | |
| 294 return NGX_ERROR; | |
| 295 } | |
| 296 | |
| 297 *h = ngx_http_rewrite_handler; | |
| 298 | |
| 299 return NGX_OK; | |
| 577 | 300 } |
| 509 | 301 |
| 302 | |
| 487 | 303 static char * |
| 304 ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 485 | 305 { |
| 577 | 306 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 307 | |
| 509 | 308 ngx_str_t *value, err; |
| 309 ngx_int_t n; | |
| 310 ngx_uint_t last; | |
| 311 ngx_http_script_code_pt *code; | |
| 312 ngx_http_script_compile_t sc; | |
| 313 ngx_http_script_regex_code_t *regex; | |
| 314 ngx_http_script_regex_end_code_t *regex_end; | |
| 315 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 485 | 316 |
| 509 | 317 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 318 sizeof(ngx_http_script_regex_code_t)); | |
| 485 | 319 if (regex == NULL) { |
| 320 return NGX_CONF_ERROR; | |
| 321 } | |
|
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322 |
| 509 | 323 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
| 324 | |
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325 value = cf->args->elts; |
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326 |
| 485 | 327 err.len = NGX_MAX_CONF_ERRSTR; |
| 328 err.data = errstr; | |
| 329 | |
| 330 /* TODO: NGX_REGEX_CASELESS */ | |
| 331 | |
| 332 regex->regex = ngx_regex_compile(&value[1], 0, cf->pool, &err); | |
| 333 | |
| 334 if (regex->regex == NULL) { | |
| 335 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
| 336 return NGX_CONF_ERROR; | |
| 337 } | |
| 338 | |
| 509 | 339 regex->code = ngx_http_script_regex_start_code; |
| 485 | 340 regex->uri = 1; |
| 341 regex->name = value[1]; | |
|
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342 |
| 509 | 343 if (value[2].data[value[2].len - 1] == '?') { |
| 344 | |
| 345 /* the last "?" drops the original arguments */ | |
| 346 value[2].len--; | |
| 347 | |
| 348 } else { | |
| 349 regex->add_args = 1; | |
| 350 } | |
| 351 | |
| 485 | 352 last = 0; |
| 353 | |
| 354 if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0) { | |
| 355 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
| 356 regex->redirect = 1; | |
| 357 last = 1; | |
| 358 } | |
| 359 | |
| 360 if (cf->args->nelts == 4) { | |
| 361 if (ngx_strcmp(value[3].data, "last") == 0) { | |
| 362 last = 1; | |
|
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363 |
| 487 | 364 } else if (ngx_strcmp(value[3].data, "break") == 0) { |
| 365 regex->break_cycle = 1; | |
| 366 last = 1; | |
| 367 | |
| 485 | 368 } else if (ngx_strcmp(value[3].data, "redirect") == 0) { |
| 369 regex->status = NGX_HTTP_MOVED_TEMPORARILY; | |
| 370 regex->redirect = 1; | |
| 371 last = 1; | |
|
326
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372 |
| 485 | 373 } else if (ngx_strcmp(value[3].data, "permanent") == 0) { |
| 374 regex->status = NGX_HTTP_MOVED_PERMANENTLY; | |
| 375 regex->redirect = 1; | |
| 376 last = 1; | |
|
326
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377 |
| 485 | 378 } else { |
|
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379 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 461 | 380 "invalid parameter \"%V\"", &value[3]); |
|
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381 return NGX_CONF_ERROR; |
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382 } |
| 485 | 383 } |
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384 |
| 509 | 385 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| 485 | 386 |
| 509 | 387 sc.cf = cf; |
| 388 sc.source = &value[2]; | |
| 389 sc.lengths = ®ex->lengths; | |
| 390 sc.values = &lcf->codes; | |
| 391 sc.variables = ngx_http_script_variables_count(&value[2]); | |
| 392 sc.main = regex; | |
| 393 sc.complete_lengths = 1; | |
| 394 sc.compile_args = !regex->redirect; | |
| 485 | 395 |
| 509 | 396 if (ngx_http_script_compile(&sc) != NGX_OK) { |
| 397 return NGX_CONF_ERROR; | |
| 398 } | |
| 485 | 399 |
| 509 | 400 regex = sc.main; |
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401 |
| 509 | 402 regex->ncaptures = sc.ncaptures; |
| 403 regex->size = sc.size; | |
| 404 regex->args = sc.args; | |
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405 |
| 641 | 406 if (sc.variables == 0 && !sc.dup_capture) { |
| 509 | 407 regex->lengths = NULL; |
| 485 | 408 } |
| 409 | |
| 410 n = ngx_regex_capture_count(regex->regex); | |
| 411 | |
| 501 | 412 if (n < 0) { |
| 413 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 414 ngx_regex_capture_count_n " failed for " | |
| 415 "pattern \"%V\"", &value[1]); | |
| 416 return NGX_CONF_ERROR; | |
| 417 } | |
| 418 | |
| 419 if (regex->ncaptures > (ngx_uint_t) n) { | |
| 485 | 420 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 421 "pattern \"%V\" has less captures " | |
| 422 "than referrenced in substitution \"%V\"", | |
| 423 &value[1], &value[2]); | |
| 424 return NGX_CONF_ERROR; | |
| 425 } | |
| 426 | |
| 501 | 427 if (regex->ncaptures < (ngx_uint_t) n) { |
| 428 regex->ncaptures = (ngx_uint_t) n; | |
| 485 | 429 } |
| 481 | 430 |
| 485 | 431 if (regex->ncaptures) { |
| 432 regex->ncaptures = (regex->ncaptures + 1) * 3; | |
| 433 | |
| 515 | 434 if (lcf->captures < regex->ncaptures) { |
| 435 lcf->captures = regex->ncaptures; | |
| 436 } | |
| 509 | 437 } |
| 438 | |
| 439 regex_end = ngx_http_script_add_code(lcf->codes, | |
| 440 sizeof(ngx_http_script_regex_end_code_t), | |
| 441 ®ex); | |
| 485 | 442 if (regex_end == NULL) { |
| 443 return NGX_CONF_ERROR; | |
| 444 } | |
| 445 | |
| 509 | 446 regex_end->code = ngx_http_script_regex_end_code; |
| 485 | 447 regex_end->uri = regex->uri; |
| 448 regex_end->args = regex->args; | |
| 509 | 449 regex_end->add_args = regex->add_args; |
| 485 | 450 regex_end->redirect = regex->redirect; |
| 451 | |
| 452 if (last) { | |
| 517 | 453 code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); |
| 485 | 454 if (code == NULL) { |
| 455 return NGX_CONF_ERROR; | |
|
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456 } |
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457 |
| 485 | 458 *code = (uintptr_t) NULL; |
| 459 } | |
| 460 | |
| 461 regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
| 462 - (u_char *) regex; | |
| 463 | |
| 464 return NGX_CONF_OK; | |
| 465 } | |
| 466 | |
| 467 | |
| 487 | 468 static char * |
| 469 ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 485 | 470 { |
| 577 | 471 ngx_http_rewrite_loc_conf_t *lcf = conf; |
|
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472 |
| 509 | 473 ngx_str_t *value; |
| 474 ngx_http_script_return_code_t *ret; | |
| 485 | 475 |
| 509 | 476 ret = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 477 sizeof(ngx_http_script_return_code_t)); | |
| 485 | 478 if (ret == NULL) { |
| 479 return NGX_CONF_ERROR; | |
| 480 } | |
| 481 | |
| 482 value = cf->args->elts; | |
| 483 | |
| 509 | 484 ret->code = ngx_http_script_return_code; |
| 485 | 485 ret->null = (uintptr_t) NULL; |
| 486 | |
| 487 ret->status = ngx_atoi(value[1].data, value[1].len); | |
| 488 | |
| 489 if (ret->status == (uintptr_t) NGX_ERROR) { | |
| 490 return NGX_CONF_ERROR; | |
|
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491 } |
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492 |
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493 return NGX_CONF_OK; |
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494 } |
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495 |
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496 |
| 487 | 497 static char * |
| 527 | 498 ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| 499 { | |
| 500 ngx_http_rewrite_loc_conf_t *lcf = conf; | |
| 501 | |
| 502 ngx_http_script_code_pt *code; | |
| 503 | |
| 504 code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); | |
| 505 if (code == NULL) { | |
| 506 return NGX_CONF_ERROR; | |
| 507 } | |
| 508 | |
| 509 *code = ngx_http_script_break_code; | |
| 510 | |
| 511 return NGX_CONF_OK; | |
| 512 } | |
| 513 | |
| 514 | |
| 515 static char * | |
| 487 | 516 ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
|
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517 { |
| 577 | 518 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 485 | 519 |
| 520 void *mconf; | |
| 521 char *rv; | |
| 522 u_char *elts; | |
| 523 ngx_uint_t i; | |
| 524 ngx_conf_t save; | |
| 525 ngx_http_module_t *module; | |
| 526 ngx_http_conf_ctx_t *ctx, *pctx; | |
| 2027 | 527 ngx_http_core_loc_conf_t *clcf, *pclcf; |
| 509 | 528 ngx_http_script_if_code_t *if_code; |
| 485 | 529 ngx_http_rewrite_loc_conf_t *nlcf; |
| 530 | |
| 501 | 531 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); |
| 532 if (ctx == NULL) { | |
| 485 | 533 return NGX_CONF_ERROR; |
| 534 } | |
| 535 | |
| 536 pctx = cf->ctx; | |
| 537 ctx->main_conf = pctx->main_conf; | |
| 577 | 538 ctx->srv_conf = pctx->srv_conf; |
| 485 | 539 |
| 540 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 541 if (ctx->loc_conf == NULL) { | |
| 542 return NGX_CONF_ERROR; | |
| 543 } | |
| 544 | |
| 545 for (i = 0; ngx_modules[i]; i++) { | |
| 546 if (ngx_modules[i]->type != NGX_HTTP_MODULE) { | |
| 547 continue; | |
| 548 } | |
| 549 | |
| 550 module = ngx_modules[i]->ctx; | |
| 577 | 551 |
| 485 | 552 if (module->create_loc_conf) { |
| 553 | |
| 501 | 554 mconf = module->create_loc_conf(cf); |
| 555 if (mconf == NULL) { | |
| 485 | 556 return NGX_CONF_ERROR; |
| 557 } | |
| 558 | |
| 559 ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; | |
| 560 } | |
| 561 } | |
| 562 | |
| 563 pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; | |
| 564 | |
| 565 clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; | |
| 566 clcf->loc_conf = ctx->loc_conf; | |
| 567 clcf->name = pclcf->name; | |
| 568 clcf->noname = 1; | |
| 569 | |
| 2027 | 570 if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) { |
| 485 | 571 return NGX_CONF_ERROR; |
| 572 } | |
| 573 | |
| 501 | 574 if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { |
| 485 | 575 return NGX_CONF_ERROR; |
| 576 } | |
| 577 | |
| 509 | 578 if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); |
| 485 | 579 if (if_code == NULL) { |
| 580 return NULL; | |
| 581 } | |
| 582 | |
| 509 | 583 if_code->code = ngx_http_script_if_code; |
| 485 | 584 |
| 585 elts = lcf->codes->elts; | |
| 586 | |
| 587 | |
| 631 | 588 /* the inner directives must be compiled to the same code array */ |
| 485 | 589 |
| 590 nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; | |
| 591 nlcf->codes = lcf->codes; | |
| 592 | |
| 593 | |
| 594 save = *cf; | |
| 595 cf->ctx = ctx; | |
| 596 | |
| 597 if (pclcf->name.len == 0) { | |
| 598 if_code->loc_conf = NULL; | |
| 599 cf->cmd_type = NGX_HTTP_SIF_CONF; | |
| 600 | |
| 601 } else { | |
| 602 if_code->loc_conf = ctx->loc_conf; | |
| 603 cf->cmd_type = NGX_HTTP_LIF_CONF; | |
| 604 } | |
| 605 | |
| 606 rv = ngx_conf_parse(cf, NULL); | |
| 607 | |
| 608 *cf = save; | |
| 609 | |
| 610 if (rv != NGX_CONF_OK) { | |
| 611 return rv; | |
| 612 } | |
| 613 | |
| 614 | |
| 517 | 615 if (lcf->captures < nlcf->captures) { |
| 616 lcf->captures = nlcf->captures; | |
| 617 } | |
| 618 | |
| 619 | |
| 485 | 620 if (elts != lcf->codes->elts) { |
| 509 | 621 if_code = (ngx_http_script_if_code_t *) |
| 485 | 622 ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); |
| 623 } | |
| 624 | |
| 625 if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts | |
| 626 - (u_char *) if_code; | |
|
437
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nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
627 |
| 555 | 628 /* the code array belong to parent block */ |
| 629 | |
| 630 nlcf->codes = NULL; | |
| 631 | |
|
437
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
632 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
|
633 } |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
634 |
|
470270fa84d2
nginx-0.0.12-2004-09-23-20:39:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
635 |
| 487 | 636 static char * |
| 501 | 637 ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) |
| 638 { | |
| 631 | 639 u_char *p; |
| 640 size_t len; | |
| 509 | 641 ngx_str_t *value, err; |
| 515 | 642 ngx_uint_t cur, last, n; |
| 577 | 643 ngx_http_script_code_pt *code; |
| 631 | 644 ngx_http_script_file_code_t *fop; |
| 509 | 645 ngx_http_script_regex_code_t *regex; |
| 646 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 501 | 647 |
| 648 value = cf->args->elts; | |
| 649 last = cf->args->nelts - 1; | |
| 650 | |
| 651 if (value[1].len < 1 || value[1].data[0] != '(') { | |
| 652 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 653 "invalid condition \"%V\"", &value[1]); | |
| 654 return NGX_CONF_ERROR; | |
| 655 } | |
| 656 | |
| 657 if (value[1].len == 1) { | |
| 658 cur = 2; | |
| 659 | |
| 660 } else { | |
| 661 cur = 1; | |
| 662 value[1].len--; | |
| 663 value[1].data++; | |
| 664 } | |
| 665 | |
| 666 if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { | |
| 667 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 668 "invalid condition \"%V\"", &value[last]); | |
| 669 return NGX_CONF_ERROR; | |
| 670 } | |
| 671 | |
| 672 if (value[last].len == 1) { | |
| 673 last--; | |
| 674 | |
| 675 } else { | |
| 676 value[last].len--; | |
| 677 value[last].data[value[last].len] = '\0'; | |
| 678 } | |
| 679 | |
| 631 | 680 len = value[cur].len; |
| 681 p = value[cur].data; | |
| 682 | |
| 683 if (len > 1 && p[0] == '$') { | |
| 501 | 684 |
| 685 if (cur != last && cur + 2 != last) { | |
| 686 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 631 | 687 "invalid condition \"%V\"", &value[cur]); |
| 501 | 688 return NGX_CONF_ERROR; |
| 689 } | |
| 690 | |
| 577 | 691 if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { |
| 501 | 692 return NGX_CONF_ERROR; |
| 693 } | |
| 694 | |
| 695 if (cur == last) { | |
| 696 return NGX_CONF_OK; | |
| 697 } | |
| 698 | |
| 699 cur++; | |
| 700 | |
| 631 | 701 len = value[cur].len; |
| 702 p = value[cur].data; | |
| 703 | |
| 704 if (len == 1 && p[0] == '=') { | |
| 577 | 705 |
| 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_equal_code; | |
| 717 | |
| 718 return NGX_CONF_OK; | |
| 501 | 719 } |
| 720 | |
| 631 | 721 if (len == 2 && p[0] == '!' && p[1] == '=') { |
| 722 | |
| 577 | 723 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { |
| 724 return NGX_CONF_ERROR; | |
| 725 } | |
| 726 | |
| 727 code = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 728 sizeof(uintptr_t)); | |
| 729 if (code == NULL) { | |
| 730 return NGX_CONF_ERROR; | |
| 731 } | |
| 732 | |
| 733 *code = ngx_http_script_not_equal_code; | |
| 734 return NGX_CONF_OK; | |
| 501 | 735 } |
| 736 | |
| 631 | 737 if ((len == 1 && p[0] == '~') |
| 738 || (len == 2 && p[0] == '~' && p[1] == '*') | |
| 739 || (len == 2 && p[0] == '!' && p[1] == '~') | |
| 740 || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*')) | |
| 577 | 741 { |
| 742 regex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 743 sizeof(ngx_http_script_regex_code_t)); | |
| 744 if (regex == NULL) { | |
| 745 return NGX_CONF_ERROR; | |
| 746 } | |
| 509 | 747 |
| 577 | 748 ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); |
| 749 | |
| 750 err.len = NGX_MAX_CONF_ERRSTR; | |
| 751 err.data = errstr; | |
| 752 | |
| 753 regex->regex = ngx_regex_compile(&value[last], | |
| 631 | 754 (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0, |
| 755 cf->pool, &err); | |
| 501 | 756 |
| 577 | 757 if (regex->regex == NULL) { |
| 758 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data); | |
| 759 return NGX_CONF_ERROR; | |
| 760 } | |
| 761 | |
| 762 regex->code = ngx_http_script_regex_start_code; | |
| 763 regex->next = sizeof(ngx_http_script_regex_code_t); | |
| 764 regex->test = 1; | |
| 631 | 765 if (p[0] == '!') { |
| 766 regex->negative_test = 1; | |
| 767 } | |
| 577 | 768 regex->name = value[last]; |
| 501 | 769 |
| 577 | 770 n = ngx_regex_capture_count(regex->regex); |
| 771 | |
| 772 if (n) { | |
| 773 regex->ncaptures = (n + 1) * 3; | |
| 774 | |
| 775 if (lcf->captures < regex->ncaptures) { | |
| 776 lcf->captures = regex->ncaptures; | |
| 777 } | |
| 778 } | |
| 779 | |
| 780 return NGX_CONF_OK; | |
| 501 | 781 } |
| 782 | |
| 577 | 783 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 784 "unexpected \"%V\" in condition", &value[cur]); | |
| 785 return NGX_CONF_ERROR; | |
| 631 | 786 |
| 787 } else if ((len == 2 && p[0] == '-') | |
| 788 || (len == 3 && p[0] == '!' && p[1] == '-')) | |
| 789 { | |
| 790 if (cur + 1 != last) { | |
| 791 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 792 "invalid condition \"%V\"", &value[cur]); | |
| 793 return NGX_CONF_ERROR; | |
| 794 } | |
| 795 | |
| 796 value[last].data[value[last].len] = '\0'; | |
| 797 value[last].len++; | |
| 798 | |
| 799 if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { | |
| 800 return NGX_CONF_ERROR; | |
| 801 } | |
| 802 | |
| 803 fop = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 804 sizeof(ngx_http_script_file_code_t)); | |
| 805 if (fop == NULL) { | |
| 806 return NGX_CONF_ERROR; | |
| 807 } | |
| 808 | |
| 809 fop->code = ngx_http_script_file_code; | |
| 810 | |
| 811 if (p[1] == 'f') { | |
| 812 fop->op = ngx_http_script_file_plain; | |
| 813 return NGX_CONF_OK; | |
| 814 } | |
| 815 | |
| 669 | 816 if (p[1] == 'd') { |
| 817 fop->op = ngx_http_script_file_dir; | |
| 818 return NGX_CONF_OK; | |
| 819 } | |
| 820 | |
| 821 if (p[1] == 'e') { | |
| 822 fop->op = ngx_http_script_file_exists; | |
| 823 return NGX_CONF_OK; | |
| 824 } | |
| 825 | |
| 826 if (p[1] == 'x') { | |
| 827 fop->op = ngx_http_script_file_exec; | |
| 828 return NGX_CONF_OK; | |
| 829 } | |
| 830 | |
| 631 | 831 if (p[0] == '!') { |
| 832 if (p[2] == 'f') { | |
| 833 fop->op = ngx_http_script_file_not_plain; | |
| 834 return NGX_CONF_OK; | |
| 835 } | |
| 669 | 836 |
| 837 if (p[2] == 'd') { | |
| 838 fop->op = ngx_http_script_file_not_dir; | |
| 839 return NGX_CONF_OK; | |
| 840 } | |
| 841 | |
| 842 if (p[2] == 'e') { | |
| 843 fop->op = ngx_http_script_file_not_exists; | |
| 844 return NGX_CONF_OK; | |
| 845 } | |
| 846 | |
| 847 if (p[2] == 'x') { | |
| 848 fop->op = ngx_http_script_file_not_exec; | |
| 849 return NGX_CONF_OK; | |
| 850 } | |
| 631 | 851 } |
| 852 | |
| 853 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 854 "invalid condition \"%V\"", &value[cur]); | |
| 855 return NGX_CONF_ERROR; | |
| 501 | 856 } |
| 857 | |
| 858 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 859 "invalid condition \"%V\"", &value[cur]); | |
| 860 | |
| 861 return NGX_CONF_ERROR; | |
| 862 } | |
| 863 | |
| 864 | |
| 865 static char * | |
| 866 ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
| 867 ngx_str_t *value) | |
| 868 { | |
| 509 | 869 ngx_int_t index; |
| 870 ngx_http_script_var_code_t *var_code; | |
| 501 | 871 |
| 872 value->len--; | |
| 873 value->data++; | |
| 874 | |
| 577 | 875 index = ngx_http_get_variable_index(cf, value); |
| 501 | 876 |
| 577 | 877 if (index == NGX_ERROR) { |
| 878 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
|
879 } |
|
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
880 |
| 577 | 881 var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, |
| 882 sizeof(ngx_http_script_var_code_t)); | |
| 883 if (var_code == NULL) { | |
| 884 return NGX_CONF_ERROR; | |
| 485 | 885 } |
| 886 | |
| 577 | 887 var_code->code = ngx_http_script_var_code; |
| 888 var_code->index = index; | |
| 485 | 889 |
| 890 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
|
891 } |
| 485 | 892 |
| 893 | |
| 501 | 894 static char * |
| 895 ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 896 { | |
| 577 | 897 ngx_http_rewrite_loc_conf_t *lcf = conf; |
| 501 | 898 |
| 637 | 899 ngx_int_t index; |
| 900 ngx_str_t *value; | |
| 901 ngx_http_variable_t *v; | |
| 902 ngx_http_script_var_code_t *vcode; | |
| 903 ngx_http_script_var_handler_code_t *vhcode; | |
| 501 | 904 |
| 905 value = cf->args->elts; | |
| 906 | |
| 907 if (value[1].data[0] != '$') { | |
| 908 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 909 "invalid variable name \"%V\"", &value[1]); | |
| 910 return NGX_CONF_ERROR; | |
| 911 } | |
| 912 | |
| 913 value[1].len--; | |
| 914 value[1].data++; | |
| 915 | |
| 1565 | 916 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE); |
| 501 | 917 if (v == NULL) { |
| 918 return NGX_CONF_ERROR; | |
| 919 } | |
| 920 | |
| 509 | 921 index = ngx_http_get_variable_index(cf, &value[1]); |
| 922 if (index == NGX_ERROR) { | |
| 923 return NGX_CONF_ERROR; | |
| 924 } | |
| 501 | 925 |
|
1189
5e1a8fe79c4b
allow to "set" $http_, $sent_http_, and $upstream_http_ variables
Igor Sysoev <igor@sysoev.ru>
parents:
739
diff
changeset
|
926 if (v->get_handler == NULL |
| 1192 | 927 && ngx_strncasecmp(value[1].data, (u_char *) "http_", 5) != 0 |
| 928 && ngx_strncasecmp(value[1].data, (u_char *) "sent_http_", 10) != 0 | |
| 929 && 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
|
930 { |
| 637 | 931 v->get_handler = ngx_http_rewrite_var; |
| 555 | 932 v->data = index; |
| 933 } | |
| 509 | 934 |
| 577 | 935 if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { |
| 936 return NGX_CONF_ERROR; | |
| 515 | 937 } |
| 501 | 938 |
| 637 | 939 if (v->set_handler) { |
| 940 vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 941 sizeof(ngx_http_script_var_handler_code_t)); | |
| 942 if (vhcode == NULL) { | |
| 943 return NGX_CONF_ERROR; | |
| 944 } | |
| 945 | |
| 946 vhcode->code = ngx_http_script_var_set_handler_code; | |
| 947 vhcode->handler = v->set_handler; | |
| 948 vhcode->data = v->data; | |
| 949 | |
| 950 return NGX_CONF_OK; | |
| 951 } | |
| 952 | |
| 953 vcode = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 954 sizeof(ngx_http_script_var_code_t)); | |
| 955 if (vcode == NULL) { | |
| 501 | 956 return NGX_CONF_ERROR; |
| 957 } | |
| 958 | |
| 637 | 959 vcode->code = ngx_http_script_set_var_code; |
| 960 vcode->index = (uintptr_t) index; | |
| 501 | 961 |
| 962 return NGX_CONF_OK; | |
| 963 } | |
| 577 | 964 |
| 965 | |
| 966 static char * | |
| 967 ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, | |
| 968 ngx_str_t *value) | |
| 969 { | |
| 970 ngx_int_t n; | |
| 971 ngx_http_script_compile_t sc; | |
| 972 ngx_http_script_value_code_t *val; | |
| 973 ngx_http_script_complex_value_code_t *complex; | |
| 974 | |
| 975 n = ngx_http_script_variables_count(value); | |
| 976 | |
| 977 if (n == 0) { | |
| 978 val = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 979 sizeof(ngx_http_script_value_code_t)); | |
| 980 if (val == NULL) { | |
| 981 return NGX_CONF_ERROR; | |
| 982 } | |
| 983 | |
| 984 n = ngx_atoi(value->data, value->len); | |
| 985 | |
| 986 if (n == NGX_ERROR) { | |
| 987 n = 0; | |
| 988 } | |
| 989 | |
| 990 val->code = ngx_http_script_value_code; | |
| 991 val->value = (uintptr_t) n; | |
| 992 val->text_len = (uintptr_t) value->len; | |
| 993 val->text_data = (uintptr_t) value->data; | |
| 994 | |
| 995 return NGX_CONF_OK; | |
| 996 } | |
| 997 | |
| 998 complex = ngx_http_script_start_code(cf->pool, &lcf->codes, | |
| 999 sizeof(ngx_http_script_complex_value_code_t)); | |
| 1000 if (complex == NULL) { | |
| 1001 return NGX_CONF_ERROR; | |
| 1002 } | |
| 1003 | |
| 1004 complex->code = ngx_http_script_complex_value_code; | |
| 1005 complex->lengths = NULL; | |
| 1006 | |
| 1007 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 1008 | |
| 1009 sc.cf = cf; | |
| 1010 sc.source = value; | |
| 1011 sc.lengths = &complex->lengths; | |
| 1012 sc.values = &lcf->codes; | |
| 1013 sc.variables = n; | |
| 1014 sc.complete_lengths = 1; | |
| 1015 | |
| 1016 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 1017 return NGX_CONF_ERROR; | |
| 1018 } | |
| 1019 | |
| 1020 return NGX_CONF_OK; | |
| 1021 } |