Mercurial > hg > nginx
annotate src/http/modules/ngx_http_map_module.c @ 4450:4919fb357a5d stable-1.0
Merge of r4406, r4413: copyrights updated.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sun, 05 Feb 2012 20:02:59 +0000 |
| parents | ace14fd91086 |
| children | fd3eefefa5f9 |
| rev | line source |
|---|---|
| 589 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
|
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4 * Copyright (C) Nginx, Inc. |
| 589 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
| 13 typedef struct { | |
| 14 ngx_uint_t hash_max_size; | |
| 15 ngx_uint_t hash_bucket_size; | |
| 16 } ngx_http_map_conf_t; | |
| 17 | |
| 18 | |
| 19 typedef struct { | |
| 593 | 20 ngx_hash_keys_arrays_t keys; |
| 589 | 21 |
| 22 ngx_array_t *values_hash; | |
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23 ngx_array_t var_values; |
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24 #if (NGX_PCRE) |
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25 ngx_array_t regexes; |
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26 #endif |
| 589 | 27 |
| 28 ngx_http_variable_value_t *default_value; | |
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29 ngx_conf_t *cf; |
| 589 | 30 ngx_uint_t hostnames; /* unsigned hostnames:1 */ |
| 31 } ngx_http_map_conf_ctx_t; | |
| 32 | |
| 33 | |
| 34 typedef struct { | |
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35 ngx_http_map_t map; |
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36 ngx_http_complex_value_t value; |
| 589 | 37 ngx_http_variable_value_t *default_value; |
| 38 ngx_uint_t hostnames; /* unsigned hostnames:1 */ | |
| 39 } ngx_http_map_ctx_t; | |
| 40 | |
| 41 | |
| 42 static int ngx_libc_cdecl ngx_http_map_cmp_dns_wildcards(const void *one, | |
| 43 const void *two); | |
| 44 static void *ngx_http_map_create_conf(ngx_conf_t *cf); | |
| 45 static char *ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); | |
| 46 static char *ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf); | |
| 47 | |
| 48 | |
| 49 static ngx_command_t ngx_http_map_commands[] = { | |
| 50 | |
| 51 { ngx_string("map"), | |
| 52 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE2, | |
| 53 ngx_http_map_block, | |
| 54 NGX_HTTP_MAIN_CONF_OFFSET, | |
| 55 0, | |
| 56 NULL }, | |
| 57 | |
| 58 { ngx_string("map_hash_max_size"), | |
| 59 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, | |
| 60 ngx_conf_set_num_slot, | |
| 61 NGX_HTTP_MAIN_CONF_OFFSET, | |
| 62 offsetof(ngx_http_map_conf_t, hash_max_size), | |
| 63 NULL }, | |
| 64 | |
| 65 { ngx_string("map_hash_bucket_size"), | |
| 66 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, | |
| 67 ngx_conf_set_num_slot, | |
| 68 NGX_HTTP_MAIN_CONF_OFFSET, | |
| 69 offsetof(ngx_http_map_conf_t, hash_bucket_size), | |
| 70 NULL }, | |
| 71 | |
| 72 ngx_null_command | |
| 73 }; | |
| 74 | |
| 75 | |
| 76 static ngx_http_module_t ngx_http_map_module_ctx = { | |
| 77 NULL, /* preconfiguration */ | |
| 78 NULL, /* postconfiguration */ | |
| 79 | |
| 80 ngx_http_map_create_conf, /* create main configuration */ | |
| 81 NULL, /* init main configuration */ | |
| 82 | |
| 83 NULL, /* create server configuration */ | |
| 84 NULL, /* merge server configuration */ | |
| 85 | |
| 86 NULL, /* create location configuration */ | |
| 87 NULL /* merge location configuration */ | |
| 88 }; | |
| 89 | |
| 90 | |
| 91 ngx_module_t ngx_http_map_module = { | |
| 92 NGX_MODULE_V1, | |
| 93 &ngx_http_map_module_ctx, /* module context */ | |
| 94 ngx_http_map_commands, /* module directives */ | |
| 95 NGX_HTTP_MODULE, /* module type */ | |
| 96 NULL, /* init master */ | |
| 97 NULL, /* init module */ | |
| 98 NULL, /* init process */ | |
| 99 NULL, /* init thread */ | |
| 100 NULL, /* exit thread */ | |
| 101 NULL, /* exit process */ | |
| 102 NULL, /* exit master */ | |
| 103 NGX_MODULE_V1_PADDING | |
| 104 }; | |
| 105 | |
| 106 | |
| 107 static ngx_int_t | |
| 108 ngx_http_map_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
| 109 uintptr_t data) | |
| 110 { | |
| 111 ngx_http_map_ctx_t *map = (ngx_http_map_ctx_t *) data; | |
| 112 | |
| 113 size_t len; | |
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114 ngx_str_t val; |
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115 ngx_http_variable_value_t *value; |
| 589 | 116 |
| 117 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 118 "http map started"); | |
| 119 | |
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120 if (ngx_http_complex_value(r, &map->value, &val) != NGX_OK) { |
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121 return NGX_ERROR; |
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122 } |
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123 |
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124 len = val.len; |
| 589 | 125 |
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126 if (len && map->hostnames && val.data[len - 1] == '.') { |
| 589 | 127 len--; |
| 128 } | |
| 129 | |
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130 value = ngx_http_map_find(r, &map->map, &val); |
| 589 | 131 |
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132 if (value == NULL) { |
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133 value = map->default_value; |
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134 } |
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135 |
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136 if (!value->valid) { |
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137 value = ngx_http_get_flushed_variable(r, (ngx_uint_t) value->data); |
| 589 | 138 |
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139 if (value == NULL || value->not_found) { |
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140 value = &ngx_http_variable_null_value; |
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141 } |
| 589 | 142 } |
| 143 | |
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144 *v = *value; |
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145 |
| 589 | 146 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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147 "http map: \"%v\" \"%v\"", &val, v); |
| 589 | 148 |
| 149 return NGX_OK; | |
| 150 } | |
| 151 | |
| 152 | |
| 153 static void * | |
| 154 ngx_http_map_create_conf(ngx_conf_t *cf) | |
| 155 { | |
| 156 ngx_http_map_conf_t *mcf; | |
| 157 | |
| 158 mcf = ngx_palloc(cf->pool, sizeof(ngx_http_map_conf_t)); | |
| 159 if (mcf == NULL) { | |
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160 return NULL; |
| 589 | 161 } |
| 162 | |
| 163 mcf->hash_max_size = NGX_CONF_UNSET_UINT; | |
| 164 mcf->hash_bucket_size = NGX_CONF_UNSET_UINT; | |
| 165 | |
| 166 return mcf; | |
| 167 } | |
| 168 | |
| 169 | |
| 170 static char * | |
| 171 ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 172 { | |
| 173 ngx_http_map_conf_t *mcf = conf; | |
| 174 | |
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175 char *rv; |
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176 ngx_str_t *value, name; |
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177 ngx_conf_t save; |
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178 ngx_pool_t *pool; |
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179 ngx_hash_init_t hash; |
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180 ngx_http_map_ctx_t *map; |
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181 ngx_http_variable_t *var; |
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182 ngx_http_map_conf_ctx_t ctx; |
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183 ngx_http_compile_complex_value_t ccv; |
| 589 | 184 |
| 185 if (mcf->hash_max_size == NGX_CONF_UNSET_UINT) { | |
| 186 mcf->hash_max_size = 2048; | |
| 187 } | |
| 188 | |
| 189 if (mcf->hash_bucket_size == NGX_CONF_UNSET_UINT) { | |
| 190 mcf->hash_bucket_size = ngx_cacheline_size; | |
| 191 | |
| 192 } else { | |
| 193 mcf->hash_bucket_size = ngx_align(mcf->hash_bucket_size, | |
| 194 ngx_cacheline_size); | |
| 195 } | |
| 196 | |
| 197 map = ngx_pcalloc(cf->pool, sizeof(ngx_http_map_ctx_t)); | |
| 198 if (map == NULL) { | |
| 199 return NGX_CONF_ERROR; | |
| 200 } | |
| 201 | |
| 202 value = cf->args->elts; | |
| 203 | |
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204 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
| 589 | 205 |
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206 ccv.cf = cf; |
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207 ccv.value = &value[1]; |
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208 ccv.complex_value = &map->value; |
| 589 | 209 |
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210 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
| 589 | 211 return NGX_CONF_ERROR; |
| 212 } | |
| 213 | |
| 214 name = value[2]; | |
| 215 name.len--; | |
| 216 name.data++; | |
| 217 | |
| 1565 | 218 var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGEABLE); |
| 589 | 219 if (var == NULL) { |
| 220 return NGX_CONF_ERROR; | |
| 221 } | |
| 222 | |
| 637 | 223 var->get_handler = ngx_http_map_variable; |
| 589 | 224 var->data = (uintptr_t) map; |
| 225 | |
| 226 pool = ngx_create_pool(16384, cf->log); | |
| 227 if (pool == NULL) { | |
| 228 return NGX_CONF_ERROR; | |
| 229 } | |
| 230 | |
| 593 | 231 ctx.keys.pool = cf->pool; |
| 232 ctx.keys.temp_pool = pool; | |
| 589 | 233 |
| 593 | 234 if (ngx_hash_keys_array_init(&ctx.keys, NGX_HASH_LARGE) != NGX_OK) { |
| 589 | 235 ngx_destroy_pool(pool); |
| 236 return NGX_CONF_ERROR; | |
| 237 } | |
| 238 | |
| 593 | 239 ctx.values_hash = ngx_pcalloc(pool, sizeof(ngx_array_t) * ctx.keys.hsize); |
| 589 | 240 if (ctx.values_hash == NULL) { |
| 241 ngx_destroy_pool(pool); | |
| 242 return NGX_CONF_ERROR; | |
| 243 } | |
| 244 | |
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245 if (ngx_array_init(&ctx.var_values, cf->pool, 2, |
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246 sizeof(ngx_http_variable_value_t)) |
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247 != NGX_OK) |
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248 { |
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249 ngx_destroy_pool(pool); |
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250 return NGX_CONF_ERROR; |
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251 } |
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252 |
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253 #if (NGX_PCRE) |
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254 if (ngx_array_init(&ctx.regexes, cf->pool, 2, sizeof(ngx_http_map_regex_t)) |
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255 != NGX_OK) |
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256 { |
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257 ngx_destroy_pool(pool); |
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258 return NGX_CONF_ERROR; |
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259 } |
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260 #endif |
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261 |
| 589 | 262 ctx.default_value = NULL; |
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263 ctx.cf = &save; |
| 589 | 264 ctx.hostnames = 0; |
| 265 | |
| 266 save = *cf; | |
| 267 cf->pool = pool; | |
| 268 cf->ctx = &ctx; | |
| 269 cf->handler = ngx_http_map; | |
| 270 cf->handler_conf = conf; | |
| 271 | |
| 272 rv = ngx_conf_parse(cf, NULL); | |
| 273 | |
| 274 *cf = save; | |
| 275 | |
| 276 if (rv != NGX_CONF_OK) { | |
| 277 ngx_destroy_pool(pool); | |
| 278 return rv; | |
| 279 } | |
| 280 | |
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281 map->default_value = ctx.default_value ? ctx.default_value: |
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282 &ngx_http_variable_null_value; |
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283 |
| 589 | 284 hash.key = ngx_hash_key_lc; |
| 285 hash.max_size = mcf->hash_max_size; | |
| 286 hash.bucket_size = mcf->hash_bucket_size; | |
| 287 hash.name = "map_hash"; | |
| 288 hash.pool = cf->pool; | |
| 289 | |
| 593 | 290 if (ctx.keys.keys.nelts) { |
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291 hash.hash = &map->map.hash.hash; |
| 589 | 292 hash.temp_pool = NULL; |
| 293 | |
| 593 | 294 if (ngx_hash_init(&hash, ctx.keys.keys.elts, ctx.keys.keys.nelts) |
| 591 | 295 != NGX_OK) |
| 296 { | |
| 593 | 297 ngx_destroy_pool(pool); |
| 589 | 298 return NGX_CONF_ERROR; |
| 299 } | |
| 300 } | |
| 301 | |
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302 if (ctx.keys.dns_wc_head.nelts) { |
| 589 | 303 |
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304 ngx_qsort(ctx.keys.dns_wc_head.elts, |
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305 (size_t) ctx.keys.dns_wc_head.nelts, |
| 589 | 306 sizeof(ngx_hash_key_t), ngx_http_map_cmp_dns_wildcards); |
| 307 | |
| 308 hash.hash = NULL; | |
| 309 hash.temp_pool = pool; | |
| 310 | |
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311 if (ngx_hash_wildcard_init(&hash, ctx.keys.dns_wc_head.elts, |
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312 ctx.keys.dns_wc_head.nelts) |
| 589 | 313 != NGX_OK) |
| 314 { | |
| 593 | 315 ngx_destroy_pool(pool); |
| 589 | 316 return NGX_CONF_ERROR; |
| 317 } | |
| 318 | |
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319 map->map.hash.wc_head = (ngx_hash_wildcard_t *) hash.hash; |
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320 } |
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321 |
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322 if (ctx.keys.dns_wc_tail.nelts) { |
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323 |
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324 ngx_qsort(ctx.keys.dns_wc_tail.elts, |
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325 (size_t) ctx.keys.dns_wc_tail.nelts, |
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326 sizeof(ngx_hash_key_t), ngx_http_map_cmp_dns_wildcards); |
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327 |
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328 hash.hash = NULL; |
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329 hash.temp_pool = pool; |
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330 |
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331 if (ngx_hash_wildcard_init(&hash, ctx.keys.dns_wc_tail.elts, |
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332 ctx.keys.dns_wc_tail.nelts) |
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333 != NGX_OK) |
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334 { |
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335 ngx_destroy_pool(pool); |
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336 return NGX_CONF_ERROR; |
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337 } |
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338 |
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339 map->map.hash.wc_tail = (ngx_hash_wildcard_t *) hash.hash; |
| 589 | 340 } |
| 341 | |
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342 #if (NGX_PCRE) |
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343 |
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344 if (ctx.regexes.nelts) { |
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345 map->map.regex = ctx.regexes.elts; |
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346 map->map.nregex = ctx.regexes.nelts; |
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347 } |
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348 |
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349 #endif |
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350 |
| 589 | 351 ngx_destroy_pool(pool); |
| 352 | |
| 353 return rv; | |
| 354 } | |
| 355 | |
| 356 | |
| 357 static int ngx_libc_cdecl | |
| 358 ngx_http_map_cmp_dns_wildcards(const void *one, const void *two) | |
| 359 { | |
| 360 ngx_hash_key_t *first, *second; | |
| 361 | |
| 362 first = (ngx_hash_key_t *) one; | |
| 363 second = (ngx_hash_key_t *) two; | |
| 364 | |
|
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365 return ngx_dns_strcmp(first->key.data, second->key.data); |
| 589 | 366 } |
| 367 | |
| 368 | |
| 369 static char * | |
| 370 ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) | |
| 371 { | |
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372 ngx_int_t rc, index; |
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373 ngx_str_t *value, file, name; |
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374 ngx_uint_t i, key; |
| 589 | 375 ngx_http_map_conf_ctx_t *ctx; |
| 591 | 376 ngx_http_variable_value_t *var, **vp; |
| 589 | 377 |
| 378 ctx = cf->ctx; | |
| 379 | |
| 380 value = cf->args->elts; | |
| 381 | |
| 382 if (cf->args->nelts == 1 | |
| 383 && ngx_strcmp(value[0].data, "hostnames") == 0) | |
| 384 { | |
| 385 ctx->hostnames = 1; | |
| 386 return NGX_CONF_OK; | |
| 387 | |
| 388 } else if (cf->args->nelts != 2) { | |
| 389 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 390 "invalid number of the map parameters"); | |
| 391 return NGX_CONF_ERROR; | |
| 392 } | |
| 393 | |
| 394 if (ngx_strcmp(value[0].data, "include") == 0) { | |
| 395 file = value[1]; | |
| 396 | |
| 3642 | 397 if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK) { |
| 589 | 398 return NGX_CONF_ERROR; |
| 399 } | |
| 400 | |
| 401 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); | |
| 402 | |
| 403 return ngx_conf_parse(cf, &file); | |
| 404 } | |
| 405 | |
|
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406 if (value[1].data[0] == '$') { |
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407 name = value[1]; |
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408 name.len--; |
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409 name.data++; |
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410 |
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411 index = ngx_http_get_variable_index(ctx->cf, &name); |
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412 if (index == NGX_ERROR) { |
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413 return NGX_CONF_ERROR; |
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414 } |
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415 |
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416 var = ctx->var_values.elts; |
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417 |
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418 for (i = 0; i < ctx->var_values.nelts; i++) { |
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419 if (index == (ngx_int_t) var[i].data) { |
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420 goto found; |
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421 } |
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422 } |
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423 |
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424 var = ngx_palloc(ctx->keys.pool, sizeof(ngx_http_variable_value_t)); |
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425 if (var == NULL) { |
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426 return NGX_CONF_ERROR; |
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427 } |
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428 |
|
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429 var->valid = 0; |
|
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430 var->no_cacheable = 0; |
|
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431 var->not_found = 0; |
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432 var->len = 0; |
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433 var->data = (u_char *) index; |
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434 |
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435 vp = ngx_array_push(&ctx->var_values); |
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436 if (vp == NULL) { |
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437 return NGX_CONF_ERROR; |
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438 } |
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439 |
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164a7f8df979
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440 *vp = var; |
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441 |
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442 goto found; |
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443 } |
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|
444 |
| 589 | 445 key = 0; |
| 446 | |
| 447 for (i = 0; i < value[1].len; i++) { | |
| 448 key = ngx_hash(key, value[1].data[i]); | |
| 449 } | |
| 450 | |
| 593 | 451 key %= ctx->keys.hsize; |
| 589 | 452 |
| 453 vp = ctx->values_hash[key].elts; | |
| 454 | |
| 455 if (vp) { | |
| 456 for (i = 0; i < ctx->values_hash[key].nelts; i++) { | |
| 457 if (value[1].len != (size_t) vp[i]->len) { | |
| 458 continue; | |
| 459 } | |
| 460 | |
| 461 if (ngx_strncmp(value[1].data, vp[i]->data, value[1].len) == 0) { | |
| 462 var = vp[i]; | |
| 463 goto found; | |
| 464 } | |
| 465 } | |
| 466 | |
| 467 } else { | |
| 468 if (ngx_array_init(&ctx->values_hash[key], cf->pool, 4, | |
| 469 sizeof(ngx_http_variable_value_t *)) | |
| 470 != NGX_OK) | |
| 471 { | |
| 472 return NGX_CONF_ERROR; | |
| 473 } | |
| 474 } | |
| 475 | |
| 593 | 476 var = ngx_palloc(ctx->keys.pool, sizeof(ngx_http_variable_value_t)); |
| 589 | 477 if (var == NULL) { |
| 478 return NGX_CONF_ERROR; | |
| 479 } | |
| 480 | |
| 481 var->len = value[1].len; | |
| 593 | 482 var->data = ngx_pstrdup(ctx->keys.pool, &value[1]); |
| 589 | 483 if (var->data == NULL) { |
| 484 return NGX_CONF_ERROR; | |
| 485 } | |
| 486 | |
| 487 var->valid = 1; | |
| 1565 | 488 var->no_cacheable = 0; |
| 589 | 489 var->not_found = 0; |
| 490 | |
| 491 vp = ngx_array_push(&ctx->values_hash[key]); | |
| 492 if (vp == NULL) { | |
| 493 return NGX_CONF_ERROR; | |
| 494 } | |
| 495 | |
| 496 *vp = var; | |
| 497 | |
| 498 found: | |
| 499 | |
|
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500 if (ngx_strcmp(value[0].data, "default") == 0) { |
| 589 | 501 |
|
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502 if (ctx->default_value) { |
| 589 | 503 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
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504 "duplicate default map parameter"); |
| 589 | 505 return NGX_CONF_ERROR; |
| 506 } | |
| 507 | |
|
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508 ctx->default_value = var; |
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509 |
|
8ef04207c84f
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510 return NGX_CONF_OK; |
| 589 | 511 } |
| 512 | |
|
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513 #if (NGX_PCRE) |
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514 |
|
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515 if (value[0].len && value[0].data[0] == '~') { |
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516 ngx_regex_compile_t rc; |
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517 ngx_http_map_regex_t *regex; |
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518 u_char errstr[NGX_MAX_CONF_ERRSTR]; |
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|
519 |
|
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520 regex = ngx_array_push(&ctx->regexes); |
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521 if (regex == NULL) { |
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522 return NGX_CONF_ERROR; |
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523 } |
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524 |
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525 value[0].len--; |
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526 value[0].data++; |
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527 |
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528 ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); |
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529 |
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530 if (value[0].data[0] == '*') { |
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531 value[0].len--; |
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532 value[0].data++; |
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533 rc.options = NGX_REGEX_CASELESS; |
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534 } |
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535 |
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536 rc.pattern = value[0]; |
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537 rc.err.len = NGX_MAX_CONF_ERRSTR; |
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538 rc.err.data = errstr; |
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539 |
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540 regex->regex = ngx_http_regex_compile(ctx->cf, &rc); |
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541 if (regex->regex == NULL) { |
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542 return NGX_CONF_ERROR; |
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543 } |
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544 |
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545 regex->value = var; |
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546 |
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547 return NGX_CONF_OK; |
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548 } |
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549 |
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550 #endif |
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551 |
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552 if (value[0].len && value[0].data[0] == '\\') { |
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553 value[0].len--; |
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554 value[0].data++; |
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555 } |
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556 |
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557 rc = ngx_hash_add_key(&ctx->keys, &value[0], var, |
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558 (ctx->hostnames) ? NGX_HASH_WILDCARD_KEY : 0); |
| 589 | 559 |
| 591 | 560 if (rc == NGX_OK) { |
| 561 return NGX_CONF_OK; | |
| 562 } | |
| 589 | 563 |
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564 if (rc == NGX_DECLINED) { |
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565 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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566 "invalid hostname or wildcard \"%V\"", &value[0]); |
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567 } |
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568 |
| 591 | 569 if (rc == NGX_BUSY) { |
| 570 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 571 "conflicting parameter \"%V\"", &value[0]); | |
| 572 } | |
| 589 | 573 |
| 591 | 574 return NGX_CONF_ERROR; |
| 589 | 575 } |