Mercurial > hg > nginx
annotate src/http/modules/ngx_http_referer_module.c @ 4008:debb2f235aa3
Fix names of the referer hash size directives introduced in r3940.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 18 Aug 2011 16:27:30 +0000 |
| parents | 3cbbe86a7a95 |
| children | d620f497c50f |
| rev | line source |
|---|---|
| 577 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 #include <ngx_config.h> | |
| 8 #include <ngx_core.h> | |
| 9 #include <ngx_http.h> | |
| 10 | |
| 11 | |
| 595 | 12 #define NGX_HTTP_REFERER_NO_URI_PART ((void *) 4) |
| 13 | |
| 1785 | 14 #if !(NGX_PCRE) |
| 1388 | 15 |
| 16 #define ngx_regex_t void | |
| 17 | |
| 18 #endif | |
| 19 | |
| 20 | |
| 577 | 21 typedef struct { |
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22 ngx_hash_combined_t hash; |
| 577 | 23 |
| 1388 | 24 #if (NGX_PCRE) |
| 25 ngx_array_t *regex; | |
| 26 #endif | |
| 27 | |
| 593 | 28 ngx_flag_t no_referer; |
| 29 ngx_flag_t blocked_referer; | |
| 577 | 30 |
| 593 | 31 ngx_hash_keys_arrays_t *keys; |
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32 |
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33 ngx_uint_t referer_hash_max_size; |
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34 ngx_uint_t referer_hash_bucket_size; |
| 577 | 35 } ngx_http_referer_conf_t; |
| 36 | |
| 37 | |
| 38 static void * ngx_http_referer_create_conf(ngx_conf_t *cf); | |
| 39 static char * ngx_http_referer_merge_conf(ngx_conf_t *cf, void *parent, | |
| 40 void *child); | |
| 41 static char *ngx_http_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 42 void *conf); | |
| 593 | 43 static char *ngx_http_add_referer(ngx_conf_t *cf, ngx_hash_keys_arrays_t *keys, |
| 595 | 44 ngx_str_t *value, ngx_str_t *uri); |
| 1388 | 45 static char *ngx_http_add_regex_referer(ngx_conf_t *cf, |
| 46 ngx_http_referer_conf_t *rlcf, ngx_str_t *name, ngx_regex_t *regex); | |
| 593 | 47 static int ngx_libc_cdecl ngx_http_cmp_referer_wildcards(const void *one, |
| 48 const void *two); | |
| 577 | 49 |
| 50 | |
| 51 static ngx_command_t ngx_http_referer_commands[] = { | |
| 52 | |
| 53 { ngx_string("valid_referers"), | |
| 54 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 55 ngx_http_valid_referers, | |
| 56 NGX_HTTP_LOC_CONF_OFFSET, | |
| 57 0, | |
| 58 NULL }, | |
| 59 | |
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60 { ngx_string("referer_hash_max_size"), |
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61 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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62 ngx_conf_set_num_slot, |
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63 NGX_HTTP_LOC_CONF_OFFSET, |
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64 offsetof(ngx_http_referer_conf_t, referer_hash_max_size), |
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65 NULL }, |
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66 |
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67 { ngx_string("referer_hash_bucket_size"), |
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68 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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69 ngx_conf_set_num_slot, |
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70 NGX_HTTP_LOC_CONF_OFFSET, |
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71 offsetof(ngx_http_referer_conf_t, referer_hash_bucket_size), |
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72 NULL }, |
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73 |
| 577 | 74 ngx_null_command |
| 75 }; | |
| 76 | |
| 77 | |
| 78 static ngx_http_module_t ngx_http_referer_module_ctx = { | |
| 79 NULL, /* preconfiguration */ | |
| 80 NULL, /* postconfiguration */ | |
| 81 | |
| 82 NULL, /* create main configuration */ | |
| 83 NULL, /* init main configuration */ | |
| 84 | |
| 85 NULL, /* create server configuration */ | |
| 86 NULL, /* merge server configuration */ | |
| 87 | |
| 88 ngx_http_referer_create_conf, /* create location configuration */ | |
| 89 ngx_http_referer_merge_conf /* merge location configuration */ | |
| 90 }; | |
| 91 | |
| 92 | |
| 93 ngx_module_t ngx_http_referer_module = { | |
| 94 NGX_MODULE_V1, | |
| 95 &ngx_http_referer_module_ctx, /* module context */ | |
| 96 ngx_http_referer_commands, /* module directives */ | |
| 97 NGX_HTTP_MODULE, /* module type */ | |
| 98 NULL, /* init master */ | |
| 99 NULL, /* init module */ | |
| 100 NULL, /* init process */ | |
| 101 NULL, /* init thread */ | |
| 102 NULL, /* exit thread */ | |
| 103 NULL, /* exit process */ | |
| 104 NULL, /* exit master */ | |
| 105 NGX_MODULE_V1_PADDING | |
| 106 }; | |
| 107 | |
| 108 | |
| 109 static ngx_int_t | |
| 110 ngx_http_referer_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
| 111 uintptr_t data) | |
| 112 { | |
| 1388 | 113 u_char *p, *ref, *last; |
| 114 size_t len; | |
| 115 ngx_str_t *uri; | |
| 116 ngx_uint_t i, key; | |
| 117 ngx_http_referer_conf_t *rlcf; | |
| 118 u_char buf[256]; | |
| 577 | 119 |
| 593 | 120 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_referer_module); |
| 577 | 121 |
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122 if (rlcf->hash.hash.buckets == NULL |
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123 && rlcf->hash.wc_head == NULL |
| 1388 | 124 && rlcf->hash.wc_tail == NULL |
| 125 #if (NGX_PCRE) | |
| 126 && rlcf->regex == NULL | |
| 127 #endif | |
| 128 ) | |
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129 { |
| 595 | 130 goto valid; |
| 577 | 131 } |
| 132 | |
| 133 if (r->headers_in.referer == NULL) { | |
| 593 | 134 if (rlcf->no_referer) { |
| 595 | 135 goto valid; |
| 136 } | |
| 577 | 137 |
| 595 | 138 goto invalid; |
| 577 | 139 } |
| 140 | |
| 141 len = r->headers_in.referer->value.len; | |
| 142 ref = r->headers_in.referer->value.data; | |
| 143 | |
| 3459 | 144 if (len >= sizeof("http://i.ru") - 1) { |
| 145 last = ref + len; | |
| 146 | |
| 147 if (ngx_strncasecmp(ref, (u_char *) "http://", 7) == 0) { | |
| 148 ref += 7; | |
| 149 goto valid_scheme; | |
| 150 | |
| 151 } else if (ngx_strncasecmp(ref, (u_char *) "https://", 8) == 0) { | |
| 152 ref += 8; | |
| 153 goto valid_scheme; | |
| 595 | 154 } |
| 577 | 155 } |
| 156 | |
| 3459 | 157 if (rlcf->blocked_referer) { |
| 158 goto valid; | |
| 159 } | |
| 160 | |
| 161 goto invalid; | |
| 162 | |
| 163 valid_scheme: | |
| 164 | |
| 595 | 165 i = 0; |
| 166 key = 0; | |
| 577 | 167 |
| 595 | 168 for (p = ref; p < last; p++) { |
| 593 | 169 if (*p == '/' || *p == ':') { |
| 170 break; | |
| 577 | 171 } |
| 595 | 172 |
| 173 buf[i] = ngx_tolower(*p); | |
| 174 key = ngx_hash(key, buf[i++]); | |
| 175 | |
| 176 if (i == 256) { | |
| 177 goto invalid; | |
| 178 } | |
| 593 | 179 } |
| 577 | 180 |
| 1388 | 181 uri = ngx_hash_find_combined(&rlcf->hash, key, buf, p - ref); |
| 577 | 182 |
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183 if (uri) { |
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184 goto uri; |
| 577 | 185 } |
| 186 | |
| 1388 | 187 #if (NGX_PCRE) |
| 188 | |
| 189 if (rlcf->regex) { | |
| 1785 | 190 ngx_int_t rc; |
| 191 ngx_str_t referer; | |
| 1388 | 192 |
| 193 referer.len = len - 7; | |
| 194 referer.data = ref; | |
| 195 | |
| 1785 | 196 rc = ngx_regex_exec_array(rlcf->regex, &referer, r->connection->log); |
| 1388 | 197 |
| 1785 | 198 if (rc == NGX_OK) { |
| 1388 | 199 goto valid; |
| 200 } | |
| 1785 | 201 |
| 202 if (rc == NGX_ERROR) { | |
| 203 return rc; | |
| 204 } | |
| 205 | |
| 206 /* NGX_DECLINED */ | |
| 1388 | 207 } |
| 208 | |
| 209 #endif | |
| 210 | |
| 595 | 211 invalid: |
| 212 | |
| 577 | 213 *v = ngx_http_variable_true_value; |
| 214 | |
| 215 return NGX_OK; | |
| 595 | 216 |
| 217 uri: | |
| 218 | |
| 219 for ( /* void */ ; p < last; p++) { | |
| 220 if (*p == '/') { | |
| 221 break; | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 len = last - p; | |
| 226 | |
| 227 if (uri == NGX_HTTP_REFERER_NO_URI_PART) { | |
| 228 goto valid; | |
| 229 } | |
| 230 | |
| 231 if (len < uri->len || ngx_strncmp(uri->data, p, uri->len) != 0) { | |
| 232 goto invalid; | |
| 233 } | |
| 234 | |
| 235 valid: | |
| 236 | |
| 237 *v = ngx_http_variable_null_value; | |
| 238 | |
| 239 return NGX_OK; | |
| 577 | 240 } |
| 241 | |
| 242 | |
| 243 static void * | |
| 244 ngx_http_referer_create_conf(ngx_conf_t *cf) | |
| 245 { | |
| 246 ngx_http_referer_conf_t *conf; | |
| 247 | |
| 593 | 248 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_referer_conf_t)); |
| 577 | 249 if (conf == NULL) { |
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250 return NULL; |
| 577 | 251 } |
| 252 | |
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253 #if (NGX_PCRE) |
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254 conf->regex = NGX_CONF_UNSET_PTR; |
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255 #endif |
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256 |
| 577 | 257 conf->no_referer = NGX_CONF_UNSET; |
| 258 conf->blocked_referer = NGX_CONF_UNSET; | |
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259 conf->referer_hash_max_size = NGX_CONF_UNSET_UINT; |
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260 conf->referer_hash_bucket_size = NGX_CONF_UNSET_UINT; |
| 577 | 261 |
| 262 return conf; | |
| 263 } | |
| 264 | |
| 265 | |
| 266 static char * | |
| 267 ngx_http_referer_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 268 { | |
| 269 ngx_http_referer_conf_t *prev = parent; | |
| 270 ngx_http_referer_conf_t *conf = child; | |
| 271 | |
| 593 | 272 ngx_hash_init_t hash; |
| 273 | |
| 274 if (conf->keys == NULL) { | |
| 275 conf->hash = prev->hash; | |
| 276 | |
| 1800 | 277 #if (NGX_PCRE) |
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278 ngx_conf_merge_ptr_value(conf->regex, prev->regex, NULL); |
| 1800 | 279 #endif |
| 577 | 280 ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0); |
| 281 ngx_conf_merge_value(conf->blocked_referer, prev->blocked_referer, 0); | |
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282 ngx_conf_merge_uint_value(conf->referer_hash_max_size, |
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283 prev->referer_hash_max_size, 2048); |
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284 ngx_conf_merge_uint_value(conf->referer_hash_bucket_size, |
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285 prev->referer_hash_bucket_size, 64); |
| 593 | 286 |
| 287 return NGX_CONF_OK; | |
| 288 } | |
| 289 | |
| 603 | 290 if ((conf->no_referer == 1 || conf->blocked_referer == 1) |
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291 && conf->keys->keys.nelts == 0 |
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292 && conf->keys->dns_wc_head.nelts == 0 |
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293 && conf->keys->dns_wc_tail.nelts == 0) |
| 603 | 294 { |
| 295 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 296 "the \"none\" or \"blocked\" referers are specified " | |
| 297 "in the \"valid_referers\" directive " | |
| 298 "without any valid referer"); | |
| 299 return NGX_CONF_ERROR; | |
| 300 } | |
| 301 | |
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302 ngx_conf_merge_uint_value(conf->referer_hash_max_size, |
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303 prev->referer_hash_max_size, 2048); |
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304 ngx_conf_merge_uint_value(conf->referer_hash_bucket_size, |
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305 prev->referer_hash_bucket_size, 64); |
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306 conf->referer_hash_bucket_size = ngx_align(conf->referer_hash_bucket_size, |
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307 ngx_cacheline_size); |
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308 |
| 593 | 309 hash.key = ngx_hash_key_lc; |
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310 hash.max_size = conf->referer_hash_max_size; |
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311 hash.bucket_size = conf->referer_hash_bucket_size; |
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312 hash.name = "referer_hash"; |
| 593 | 313 hash.pool = cf->pool; |
| 314 | |
| 315 if (conf->keys->keys.nelts) { | |
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316 hash.hash = &conf->hash.hash; |
| 593 | 317 hash.temp_pool = NULL; |
| 318 | |
| 319 if (ngx_hash_init(&hash, conf->keys->keys.elts, conf->keys->keys.nelts) | |
| 320 != NGX_OK) | |
| 321 { | |
| 322 return NGX_CONF_ERROR; | |
| 323 } | |
| 324 } | |
| 325 | |
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326 if (conf->keys->dns_wc_head.nelts) { |
| 593 | 327 |
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328 ngx_qsort(conf->keys->dns_wc_head.elts, |
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329 (size_t) conf->keys->dns_wc_head.nelts, |
| 593 | 330 sizeof(ngx_hash_key_t), |
| 331 ngx_http_cmp_referer_wildcards); | |
| 332 | |
| 333 hash.hash = NULL; | |
| 334 hash.temp_pool = cf->temp_pool; | |
| 335 | |
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336 if (ngx_hash_wildcard_init(&hash, conf->keys->dns_wc_head.elts, |
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337 conf->keys->dns_wc_head.nelts) |
| 593 | 338 != NGX_OK) |
| 339 { | |
| 340 return NGX_CONF_ERROR; | |
| 341 } | |
| 342 | |
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343 conf->hash.wc_head = (ngx_hash_wildcard_t *) hash.hash; |
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344 } |
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345 |
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346 if (conf->keys->dns_wc_tail.nelts) { |
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347 |
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348 ngx_qsort(conf->keys->dns_wc_tail.elts, |
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349 (size_t) conf->keys->dns_wc_tail.nelts, |
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350 sizeof(ngx_hash_key_t), |
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351 ngx_http_cmp_referer_wildcards); |
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352 |
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353 hash.hash = NULL; |
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354 hash.temp_pool = cf->temp_pool; |
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355 |
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356 if (ngx_hash_wildcard_init(&hash, conf->keys->dns_wc_tail.elts, |
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357 conf->keys->dns_wc_tail.nelts) |
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358 != NGX_OK) |
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359 { |
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360 return NGX_CONF_ERROR; |
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361 } |
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362 |
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363 conf->hash.wc_tail = (ngx_hash_wildcard_t *) hash.hash; |
| 577 | 364 } |
| 365 | |
| 1800 | 366 #if (NGX_PCRE) |
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367 ngx_conf_merge_ptr_value(conf->regex, prev->regex, NULL); |
| 1800 | 368 #endif |
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369 |
| 577 | 370 if (conf->no_referer == NGX_CONF_UNSET) { |
| 371 conf->no_referer = 0; | |
| 372 } | |
| 373 | |
| 374 if (conf->blocked_referer == NGX_CONF_UNSET) { | |
| 375 conf->blocked_referer = 0; | |
| 376 } | |
| 377 | |
| 611 | 378 conf->keys = NULL; |
| 379 | |
| 577 | 380 return NGX_CONF_OK; |
| 381 } | |
| 382 | |
| 383 | |
| 384 static char * | |
| 385 ngx_http_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 386 { | |
| 593 | 387 ngx_http_referer_conf_t *rlcf = conf; |
| 577 | 388 |
| 593 | 389 u_char *p; |
| 595 | 390 ngx_str_t *value, uri, name; |
| 593 | 391 ngx_uint_t i, n; |
| 577 | 392 ngx_http_variable_t *var; |
| 393 ngx_http_server_name_t *sn; | |
| 394 ngx_http_core_srv_conf_t *cscf; | |
| 395 | |
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396 ngx_str_set(&name, "invalid_referer"); |
| 577 | 397 |
| 583 | 398 var = ngx_http_add_variable(cf, &name, |
| 1565 | 399 NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOHASH); |
| 577 | 400 if (var == NULL) { |
| 401 return NGX_CONF_ERROR; | |
| 402 } | |
| 403 | |
| 637 | 404 var->get_handler = ngx_http_referer_variable; |
| 577 | 405 |
| 593 | 406 if (rlcf->keys == NULL) { |
| 407 rlcf->keys = ngx_pcalloc(cf->temp_pool, sizeof(ngx_hash_keys_arrays_t)); | |
| 408 if (rlcf->keys == NULL) { | |
| 409 return NGX_CONF_ERROR; | |
| 410 } | |
| 577 | 411 |
| 593 | 412 rlcf->keys->pool = cf->pool; |
| 413 rlcf->keys->temp_pool = cf->pool; | |
| 414 | |
| 415 if (ngx_hash_keys_array_init(rlcf->keys, NGX_HASH_SMALL) != NGX_OK) { | |
| 577 | 416 return NGX_CONF_ERROR; |
| 417 } | |
| 418 } | |
| 419 | |
| 420 value = cf->args->elts; | |
| 421 | |
| 422 for (i = 1; i < cf->args->nelts; i++) { | |
| 423 if (value[i].len == 0) { | |
| 424 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 425 "invalid referer \"%V\"", &value[i]); | |
| 426 return NGX_CONF_ERROR; | |
| 427 } | |
| 428 | |
| 429 if (ngx_strcmp(value[i].data, "none") == 0) { | |
| 593 | 430 rlcf->no_referer = 1; |
| 577 | 431 continue; |
| 432 } | |
| 433 | |
| 434 if (ngx_strcmp(value[i].data, "blocked") == 0) { | |
| 593 | 435 rlcf->blocked_referer = 1; |
| 577 | 436 continue; |
| 437 } | |
| 438 | |
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439 ngx_str_null(&uri); |
| 595 | 440 |
| 577 | 441 if (ngx_strcmp(value[i].data, "server_names") == 0) { |
| 593 | 442 |
| 443 cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module); | |
| 577 | 444 |
| 593 | 445 sn = cscf->server_names.elts; |
| 446 for (n = 0; n < cscf->server_names.nelts; n++) { | |
| 1388 | 447 |
| 448 #if (NGX_PCRE) | |
| 449 if (sn[n].regex) { | |
| 450 | |
| 451 if (ngx_http_add_regex_referer(cf, rlcf, &sn[n].name, | |
| 3325 | 452 sn[n].regex->regex) |
| 1388 | 453 != NGX_OK) |
| 454 { | |
| 455 return NGX_CONF_ERROR; | |
| 456 } | |
| 457 | |
| 458 continue; | |
| 459 } | |
| 460 #endif | |
| 461 | |
| 595 | 462 if (ngx_http_add_referer(cf, rlcf->keys, &sn[n].name, &uri) |
| 463 != NGX_OK) | |
| 464 { | |
| 593 | 465 return NGX_CONF_ERROR; |
| 466 } | |
| 467 } | |
| 577 | 468 |
| 469 continue; | |
| 470 } | |
| 471 | |
| 1388 | 472 if (value[i].data[0] == '~') { |
| 473 if (ngx_http_add_regex_referer(cf, rlcf, &value[i], NULL) != NGX_OK) | |
| 474 { | |
| 475 return NGX_CONF_ERROR; | |
| 476 } | |
| 477 | |
| 478 continue; | |
| 479 } | |
| 480 | |
| 1242 | 481 p = (u_char *) ngx_strchr(value[i].data, '/'); |
| 577 | 482 |
| 593 | 483 if (p) { |
| 595 | 484 uri.len = (value[i].data + value[i].len) - p; |
| 485 uri.data = p; | |
| 593 | 486 value[i].len = p - value[i].data; |
| 577 | 487 } |
| 488 | |
| 595 | 489 if (ngx_http_add_referer(cf, rlcf->keys, &value[i], &uri) != NGX_OK) { |
| 577 | 490 return NGX_CONF_ERROR; |
| 491 } | |
| 492 } | |
| 493 | |
| 494 return NGX_CONF_OK; | |
| 495 } | |
| 593 | 496 |
| 497 | |
| 498 static char * | |
| 499 ngx_http_add_referer(ngx_conf_t *cf, ngx_hash_keys_arrays_t *keys, | |
| 595 | 500 ngx_str_t *value, ngx_str_t *uri) |
| 593 | 501 { |
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502 ngx_int_t rc; |
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503 ngx_str_t *u; |
| 593 | 504 |
| 595 | 505 if (uri->len == 0) { |
| 506 u = NGX_HTTP_REFERER_NO_URI_PART; | |
| 507 | |
| 508 } else { | |
| 509 u = ngx_palloc(cf->pool, sizeof(ngx_str_t)); | |
| 510 if (u == NULL) { | |
| 511 return NGX_CONF_ERROR; | |
| 512 } | |
| 513 | |
| 514 *u = *uri; | |
| 515 } | |
| 516 | |
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517 rc = ngx_hash_add_key(keys, value, u, NGX_HASH_WILDCARD_KEY); |
| 593 | 518 |
| 519 if (rc == NGX_OK) { | |
| 520 return NGX_CONF_OK; | |
| 521 } | |
| 522 | |
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523 if (rc == NGX_DECLINED) { |
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524 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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525 "invalid hostname or wildcard \"%V\"", value); |
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526 } |
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527 |
| 593 | 528 if (rc == NGX_BUSY) { |
| 529 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 530 "conflicting parameter \"%V\"", value); | |
| 531 } | |
| 532 | |
| 533 return NGX_CONF_ERROR; | |
| 534 } | |
| 535 | |
| 536 | |
| 1388 | 537 static char * |
| 538 ngx_http_add_regex_referer(ngx_conf_t *cf, ngx_http_referer_conf_t *rlcf, | |
| 539 ngx_str_t *name, ngx_regex_t *regex) | |
| 540 { | |
| 541 #if (NGX_PCRE) | |
| 3325 | 542 ngx_regex_elt_t *re; |
| 543 ngx_regex_compile_t rc; | |
| 544 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 1388 | 545 |
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546 if (name->len == 1) { |
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547 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "empty regex in \"%V\"", name); |
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548 return NGX_CONF_ERROR; |
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549 } |
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550 |
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551 if (rlcf->regex == NGX_CONF_UNSET_PTR) { |
| 1785 | 552 rlcf->regex = ngx_array_create(cf->pool, 2, sizeof(ngx_regex_elt_t)); |
| 1388 | 553 if (rlcf->regex == NULL) { |
| 554 return NGX_CONF_ERROR; | |
| 555 } | |
| 556 } | |
| 557 | |
| 1785 | 558 re = ngx_array_push(rlcf->regex); |
| 559 if (re == NULL) { | |
| 1388 | 560 return NGX_CONF_ERROR; |
| 561 } | |
| 562 | |
| 563 if (regex) { | |
| 1785 | 564 re->regex = regex; |
| 565 re->name = name->data; | |
| 1388 | 566 |
| 567 return NGX_CONF_OK; | |
| 568 } | |
| 569 | |
| 570 name->len--; | |
| 571 name->data++; | |
| 572 | |
| 3325 | 573 ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); |
| 1388 | 574 |
| 3325 | 575 rc.pattern = *name; |
| 576 rc.pool = cf->pool; | |
| 577 rc.options = NGX_REGEX_CASELESS; | |
| 578 rc.err.len = NGX_MAX_CONF_ERRSTR; | |
| 579 rc.err.data = errstr; | |
| 580 | |
| 581 if (ngx_regex_compile(&rc) != NGX_OK) { | |
| 582 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V", &rc.err); | |
| 1388 | 583 return NGX_CONF_ERROR; |
| 584 } | |
| 585 | |
| 3325 | 586 re->regex = rc.regex; |
| 1785 | 587 re->name = name->data; |
| 1388 | 588 |
| 589 return NGX_CONF_OK; | |
| 590 | |
| 591 #else | |
| 592 | |
| 593 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 594 "the using of the regex \"%V\" requires PCRE library", | |
| 595 name); | |
| 596 | |
| 597 return NGX_CONF_ERROR; | |
| 598 | |
| 599 #endif | |
| 600 } | |
| 601 | |
| 602 | |
| 593 | 603 static int ngx_libc_cdecl |
| 604 ngx_http_cmp_referer_wildcards(const void *one, const void *two) | |
| 605 { | |
| 606 ngx_hash_key_t *first, *second; | |
| 607 | |
| 608 first = (ngx_hash_key_t *) one; | |
| 609 second = (ngx_hash_key_t *) two; | |
| 610 | |
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611 return ngx_dns_strcmp(first->key.data, second->key.data); |
| 593 | 612 } |