Mercurial > hg > nginx
annotate src/http/modules/ngx_http_map_module.c @ 4785:f8767b8032ba stable-1.2
Merge of r4713: map hostnames fix (ticket #182).
The final dot wasn't stripped before looking up in a map of hostnames.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 06 Aug 2012 14:04:06 +0000 |
| parents | d620f497c50f |
| children | 0656cfe8f7cb |
| rev | line source |
|---|---|
| 589 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 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 | |
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113 ngx_str_t val; |
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114 ngx_http_variable_value_t *value; |
| 589 | 115 |
| 116 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 117 "http map started"); | |
| 118 | |
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119 if (ngx_http_complex_value(r, &map->value, &val) != NGX_OK) { |
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120 return NGX_ERROR; |
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121 } |
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122 |
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123 if (map->hostnames && val.len > 0 && val.data[val.len - 1] == '.') { |
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124 val.len--; |
| 589 | 125 } |
| 126 | |
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127 value = ngx_http_map_find(r, &map->map, &val); |
| 589 | 128 |
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129 if (value == NULL) { |
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130 value = map->default_value; |
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131 } |
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132 |
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133 if (!value->valid) { |
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134 value = ngx_http_get_flushed_variable(r, (ngx_uint_t) value->data); |
| 589 | 135 |
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136 if (value == NULL || value->not_found) { |
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137 value = &ngx_http_variable_null_value; |
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138 } |
| 589 | 139 } |
| 140 | |
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141 *v = *value; |
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142 |
| 589 | 143 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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144 "http map: \"%v\" \"%v\"", &val, v); |
| 589 | 145 |
| 146 return NGX_OK; | |
| 147 } | |
| 148 | |
| 149 | |
| 150 static void * | |
| 151 ngx_http_map_create_conf(ngx_conf_t *cf) | |
| 152 { | |
| 153 ngx_http_map_conf_t *mcf; | |
| 154 | |
| 155 mcf = ngx_palloc(cf->pool, sizeof(ngx_http_map_conf_t)); | |
| 156 if (mcf == NULL) { | |
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157 return NULL; |
| 589 | 158 } |
| 159 | |
| 160 mcf->hash_max_size = NGX_CONF_UNSET_UINT; | |
| 161 mcf->hash_bucket_size = NGX_CONF_UNSET_UINT; | |
| 162 | |
| 163 return mcf; | |
| 164 } | |
| 165 | |
| 166 | |
| 167 static char * | |
| 168 ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 169 { | |
| 170 ngx_http_map_conf_t *mcf = conf; | |
| 171 | |
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172 char *rv; |
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173 ngx_str_t *value, name; |
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174 ngx_conf_t save; |
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175 ngx_pool_t *pool; |
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176 ngx_hash_init_t hash; |
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177 ngx_http_map_ctx_t *map; |
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178 ngx_http_variable_t *var; |
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179 ngx_http_map_conf_ctx_t ctx; |
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180 ngx_http_compile_complex_value_t ccv; |
| 589 | 181 |
| 182 if (mcf->hash_max_size == NGX_CONF_UNSET_UINT) { | |
| 183 mcf->hash_max_size = 2048; | |
| 184 } | |
| 185 | |
| 186 if (mcf->hash_bucket_size == NGX_CONF_UNSET_UINT) { | |
| 187 mcf->hash_bucket_size = ngx_cacheline_size; | |
| 188 | |
| 189 } else { | |
| 190 mcf->hash_bucket_size = ngx_align(mcf->hash_bucket_size, | |
| 191 ngx_cacheline_size); | |
| 192 } | |
| 193 | |
| 194 map = ngx_pcalloc(cf->pool, sizeof(ngx_http_map_ctx_t)); | |
| 195 if (map == NULL) { | |
| 196 return NGX_CONF_ERROR; | |
| 197 } | |
| 198 | |
| 199 value = cf->args->elts; | |
| 200 | |
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201 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
| 589 | 202 |
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203 ccv.cf = cf; |
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204 ccv.value = &value[1]; |
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205 ccv.complex_value = &map->value; |
| 589 | 206 |
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207 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
| 589 | 208 return NGX_CONF_ERROR; |
| 209 } | |
| 210 | |
| 211 name = value[2]; | |
| 212 name.len--; | |
| 213 name.data++; | |
| 214 | |
| 1565 | 215 var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGEABLE); |
| 589 | 216 if (var == NULL) { |
| 217 return NGX_CONF_ERROR; | |
| 218 } | |
| 219 | |
| 637 | 220 var->get_handler = ngx_http_map_variable; |
| 589 | 221 var->data = (uintptr_t) map; |
| 222 | |
| 223 pool = ngx_create_pool(16384, cf->log); | |
| 224 if (pool == NULL) { | |
| 225 return NGX_CONF_ERROR; | |
| 226 } | |
| 227 | |
| 593 | 228 ctx.keys.pool = cf->pool; |
| 229 ctx.keys.temp_pool = pool; | |
| 589 | 230 |
| 593 | 231 if (ngx_hash_keys_array_init(&ctx.keys, NGX_HASH_LARGE) != NGX_OK) { |
| 589 | 232 ngx_destroy_pool(pool); |
| 233 return NGX_CONF_ERROR; | |
| 234 } | |
| 235 | |
| 593 | 236 ctx.values_hash = ngx_pcalloc(pool, sizeof(ngx_array_t) * ctx.keys.hsize); |
| 589 | 237 if (ctx.values_hash == NULL) { |
| 238 ngx_destroy_pool(pool); | |
| 239 return NGX_CONF_ERROR; | |
| 240 } | |
| 241 | |
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242 if (ngx_array_init(&ctx.var_values, cf->pool, 2, |
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243 sizeof(ngx_http_variable_value_t)) |
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244 != NGX_OK) |
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245 { |
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246 ngx_destroy_pool(pool); |
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247 return NGX_CONF_ERROR; |
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248 } |
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249 |
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250 #if (NGX_PCRE) |
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251 if (ngx_array_init(&ctx.regexes, cf->pool, 2, sizeof(ngx_http_map_regex_t)) |
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252 != NGX_OK) |
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253 { |
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254 ngx_destroy_pool(pool); |
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255 return NGX_CONF_ERROR; |
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256 } |
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257 #endif |
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258 |
| 589 | 259 ctx.default_value = NULL; |
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260 ctx.cf = &save; |
| 589 | 261 ctx.hostnames = 0; |
| 262 | |
| 263 save = *cf; | |
| 264 cf->pool = pool; | |
| 265 cf->ctx = &ctx; | |
| 266 cf->handler = ngx_http_map; | |
| 267 cf->handler_conf = conf; | |
| 268 | |
| 269 rv = ngx_conf_parse(cf, NULL); | |
| 270 | |
| 271 *cf = save; | |
| 272 | |
| 273 if (rv != NGX_CONF_OK) { | |
| 274 ngx_destroy_pool(pool); | |
| 275 return rv; | |
| 276 } | |
| 277 | |
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278 map->default_value = ctx.default_value ? ctx.default_value: |
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279 &ngx_http_variable_null_value; |
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280 |
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281 map->hostnames = ctx.hostnames; |
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282 |
| 589 | 283 hash.key = ngx_hash_key_lc; |
| 284 hash.max_size = mcf->hash_max_size; | |
| 285 hash.bucket_size = mcf->hash_bucket_size; | |
| 286 hash.name = "map_hash"; | |
| 287 hash.pool = cf->pool; | |
| 288 | |
| 593 | 289 if (ctx.keys.keys.nelts) { |
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290 hash.hash = &map->map.hash.hash; |
| 589 | 291 hash.temp_pool = NULL; |
| 292 | |
| 593 | 293 if (ngx_hash_init(&hash, ctx.keys.keys.elts, ctx.keys.keys.nelts) |
| 591 | 294 != NGX_OK) |
| 295 { | |
| 593 | 296 ngx_destroy_pool(pool); |
| 589 | 297 return NGX_CONF_ERROR; |
| 298 } | |
| 299 } | |
| 300 | |
|
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301 if (ctx.keys.dns_wc_head.nelts) { |
| 589 | 302 |
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303 ngx_qsort(ctx.keys.dns_wc_head.elts, |
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304 (size_t) ctx.keys.dns_wc_head.nelts, |
| 589 | 305 sizeof(ngx_hash_key_t), ngx_http_map_cmp_dns_wildcards); |
| 306 | |
| 307 hash.hash = NULL; | |
| 308 hash.temp_pool = pool; | |
| 309 | |
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310 if (ngx_hash_wildcard_init(&hash, ctx.keys.dns_wc_head.elts, |
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311 ctx.keys.dns_wc_head.nelts) |
| 589 | 312 != NGX_OK) |
| 313 { | |
| 593 | 314 ngx_destroy_pool(pool); |
| 589 | 315 return NGX_CONF_ERROR; |
| 316 } | |
| 317 | |
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318 map->map.hash.wc_head = (ngx_hash_wildcard_t *) hash.hash; |
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319 } |
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320 |
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321 if (ctx.keys.dns_wc_tail.nelts) { |
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322 |
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323 ngx_qsort(ctx.keys.dns_wc_tail.elts, |
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324 (size_t) ctx.keys.dns_wc_tail.nelts, |
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325 sizeof(ngx_hash_key_t), ngx_http_map_cmp_dns_wildcards); |
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326 |
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327 hash.hash = NULL; |
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328 hash.temp_pool = pool; |
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329 |
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330 if (ngx_hash_wildcard_init(&hash, ctx.keys.dns_wc_tail.elts, |
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331 ctx.keys.dns_wc_tail.nelts) |
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332 != NGX_OK) |
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333 { |
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334 ngx_destroy_pool(pool); |
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335 return NGX_CONF_ERROR; |
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336 } |
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337 |
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338 map->map.hash.wc_tail = (ngx_hash_wildcard_t *) hash.hash; |
| 589 | 339 } |
| 340 | |
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341 #if (NGX_PCRE) |
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342 |
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343 if (ctx.regexes.nelts) { |
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344 map->map.regex = ctx.regexes.elts; |
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345 map->map.nregex = ctx.regexes.nelts; |
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346 } |
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347 |
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348 #endif |
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349 |
| 589 | 350 ngx_destroy_pool(pool); |
| 351 | |
| 352 return rv; | |
| 353 } | |
| 354 | |
| 355 | |
| 356 static int ngx_libc_cdecl | |
| 357 ngx_http_map_cmp_dns_wildcards(const void *one, const void *two) | |
| 358 { | |
| 359 ngx_hash_key_t *first, *second; | |
| 360 | |
| 361 first = (ngx_hash_key_t *) one; | |
| 362 second = (ngx_hash_key_t *) two; | |
| 363 | |
|
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364 return ngx_dns_strcmp(first->key.data, second->key.data); |
| 589 | 365 } |
| 366 | |
| 367 | |
| 368 static char * | |
| 369 ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) | |
| 370 { | |
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371 ngx_int_t rc, index; |
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372 ngx_str_t *value, file, name; |
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373 ngx_uint_t i, key; |
| 589 | 374 ngx_http_map_conf_ctx_t *ctx; |
| 591 | 375 ngx_http_variable_value_t *var, **vp; |
| 589 | 376 |
| 377 ctx = cf->ctx; | |
| 378 | |
| 379 value = cf->args->elts; | |
| 380 | |
| 381 if (cf->args->nelts == 1 | |
| 382 && ngx_strcmp(value[0].data, "hostnames") == 0) | |
| 383 { | |
| 384 ctx->hostnames = 1; | |
| 385 return NGX_CONF_OK; | |
| 386 | |
| 387 } else if (cf->args->nelts != 2) { | |
| 388 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 389 "invalid number of the map parameters"); | |
| 390 return NGX_CONF_ERROR; | |
| 391 } | |
| 392 | |
| 393 if (ngx_strcmp(value[0].data, "include") == 0) { | |
| 394 file = value[1]; | |
| 395 | |
| 3642 | 396 if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK) { |
| 589 | 397 return NGX_CONF_ERROR; |
| 398 } | |
| 399 | |
| 400 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); | |
| 401 | |
| 402 return ngx_conf_parse(cf, &file); | |
| 403 } | |
| 404 | |
|
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405 if (value[1].data[0] == '$') { |
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406 name = value[1]; |
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407 name.len--; |
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408 name.data++; |
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409 |
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410 index = ngx_http_get_variable_index(ctx->cf, &name); |
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411 if (index == NGX_ERROR) { |
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412 return NGX_CONF_ERROR; |
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413 } |
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414 |
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415 var = ctx->var_values.elts; |
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416 |
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417 for (i = 0; i < ctx->var_values.nelts; i++) { |
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418 if (index == (ngx_int_t) var[i].data) { |
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419 goto found; |
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420 } |
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421 } |
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422 |
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423 var = ngx_palloc(ctx->keys.pool, sizeof(ngx_http_variable_value_t)); |
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424 if (var == NULL) { |
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425 return NGX_CONF_ERROR; |
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426 } |
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427 |
|
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428 var->valid = 0; |
|
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429 var->no_cacheable = 0; |
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430 var->not_found = 0; |
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431 var->len = 0; |
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432 var->data = (u_char *) index; |
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433 |
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434 vp = ngx_array_push(&ctx->var_values); |
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435 if (vp == NULL) { |
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436 return NGX_CONF_ERROR; |
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437 } |
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438 |
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439 *vp = var; |
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440 |
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441 goto found; |
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442 } |
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|
443 |
| 589 | 444 key = 0; |
| 445 | |
| 446 for (i = 0; i < value[1].len; i++) { | |
| 447 key = ngx_hash(key, value[1].data[i]); | |
| 448 } | |
| 449 | |
| 593 | 450 key %= ctx->keys.hsize; |
| 589 | 451 |
| 452 vp = ctx->values_hash[key].elts; | |
| 453 | |
| 454 if (vp) { | |
| 455 for (i = 0; i < ctx->values_hash[key].nelts; i++) { | |
| 456 if (value[1].len != (size_t) vp[i]->len) { | |
| 457 continue; | |
| 458 } | |
| 459 | |
| 460 if (ngx_strncmp(value[1].data, vp[i]->data, value[1].len) == 0) { | |
| 461 var = vp[i]; | |
| 462 goto found; | |
| 463 } | |
| 464 } | |
| 465 | |
| 466 } else { | |
| 467 if (ngx_array_init(&ctx->values_hash[key], cf->pool, 4, | |
| 468 sizeof(ngx_http_variable_value_t *)) | |
| 469 != NGX_OK) | |
| 470 { | |
| 471 return NGX_CONF_ERROR; | |
| 472 } | |
| 473 } | |
| 474 | |
| 593 | 475 var = ngx_palloc(ctx->keys.pool, sizeof(ngx_http_variable_value_t)); |
| 589 | 476 if (var == NULL) { |
| 477 return NGX_CONF_ERROR; | |
| 478 } | |
| 479 | |
| 480 var->len = value[1].len; | |
| 593 | 481 var->data = ngx_pstrdup(ctx->keys.pool, &value[1]); |
| 589 | 482 if (var->data == NULL) { |
| 483 return NGX_CONF_ERROR; | |
| 484 } | |
| 485 | |
| 486 var->valid = 1; | |
| 1565 | 487 var->no_cacheable = 0; |
| 589 | 488 var->not_found = 0; |
| 489 | |
| 490 vp = ngx_array_push(&ctx->values_hash[key]); | |
| 491 if (vp == NULL) { | |
| 492 return NGX_CONF_ERROR; | |
| 493 } | |
| 494 | |
| 495 *vp = var; | |
| 496 | |
| 497 found: | |
| 498 | |
|
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499 if (ngx_strcmp(value[0].data, "default") == 0) { |
| 589 | 500 |
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501 if (ctx->default_value) { |
| 589 | 502 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
|
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503 "duplicate default map parameter"); |
| 589 | 504 return NGX_CONF_ERROR; |
| 505 } | |
| 506 | |
|
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507 ctx->default_value = var; |
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508 |
|
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509 return NGX_CONF_OK; |
| 589 | 510 } |
| 511 | |
|
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512 #if (NGX_PCRE) |
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513 |
|
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514 if (value[0].len && value[0].data[0] == '~') { |
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515 ngx_regex_compile_t rc; |
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516 ngx_http_map_regex_t *regex; |
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517 u_char errstr[NGX_MAX_CONF_ERRSTR]; |
|
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518 |
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519 regex = ngx_array_push(&ctx->regexes); |
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520 if (regex == NULL) { |
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521 return NGX_CONF_ERROR; |
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522 } |
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523 |
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524 value[0].len--; |
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525 value[0].data++; |
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526 |
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527 ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); |
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528 |
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529 if (value[0].data[0] == '*') { |
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530 value[0].len--; |
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531 value[0].data++; |
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532 rc.options = NGX_REGEX_CASELESS; |
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533 } |
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534 |
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535 rc.pattern = value[0]; |
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536 rc.err.len = NGX_MAX_CONF_ERRSTR; |
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537 rc.err.data = errstr; |
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538 |
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539 regex->regex = ngx_http_regex_compile(ctx->cf, &rc); |
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540 if (regex->regex == NULL) { |
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541 return NGX_CONF_ERROR; |
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542 } |
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543 |
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544 regex->value = var; |
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545 |
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546 return NGX_CONF_OK; |
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547 } |
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548 |
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549 #endif |
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550 |
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551 if (value[0].len && value[0].data[0] == '\\') { |
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552 value[0].len--; |
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553 value[0].data++; |
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554 } |
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555 |
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556 rc = ngx_hash_add_key(&ctx->keys, &value[0], var, |
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557 (ctx->hostnames) ? NGX_HASH_WILDCARD_KEY : 0); |
| 589 | 558 |
| 591 | 559 if (rc == NGX_OK) { |
| 560 return NGX_CONF_OK; | |
| 561 } | |
| 589 | 562 |
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563 if (rc == NGX_DECLINED) { |
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564 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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565 "invalid hostname or wildcard \"%V\"", &value[0]); |
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566 } |
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567 |
| 591 | 568 if (rc == NGX_BUSY) { |
| 569 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 570 "conflicting parameter \"%V\"", &value[0]); | |
| 571 } | |
| 589 | 572 |
| 591 | 573 return NGX_CONF_ERROR; |
| 589 | 574 } |