Mercurial > hg > nginx
annotate src/http/modules/ngx_http_referer_module.c @ 7660:d33e17499088
Version bump.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Tue, 26 May 2020 22:03:00 +0300 |
| parents | 7564a919d333 |
| children |
| rev | line source |
|---|---|
| 577 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 577 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
| 595 | 13 #define NGX_HTTP_REFERER_NO_URI_PART ((void *) 4) |
| 14 | |
| 1388 | 15 |
| 577 | 16 typedef struct { |
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17 ngx_hash_combined_t hash; |
| 577 | 18 |
| 1388 | 19 #if (NGX_PCRE) |
| 20 ngx_array_t *regex; | |
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21 ngx_array_t *server_name_regex; |
| 1388 | 22 #endif |
| 23 | |
| 593 | 24 ngx_flag_t no_referer; |
| 25 ngx_flag_t blocked_referer; | |
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26 ngx_flag_t server_names; |
| 577 | 27 |
| 593 | 28 ngx_hash_keys_arrays_t *keys; |
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29 |
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30 ngx_uint_t referer_hash_max_size; |
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31 ngx_uint_t referer_hash_bucket_size; |
| 577 | 32 } ngx_http_referer_conf_t; |
| 33 | |
| 34 | |
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35 static ngx_int_t ngx_http_referer_add_variables(ngx_conf_t *cf); |
| 577 | 36 static void * ngx_http_referer_create_conf(ngx_conf_t *cf); |
| 37 static char * ngx_http_referer_merge_conf(ngx_conf_t *cf, void *parent, | |
| 38 void *child); | |
| 39 static char *ngx_http_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 40 void *conf); | |
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41 static ngx_int_t ngx_http_add_referer(ngx_conf_t *cf, |
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42 ngx_hash_keys_arrays_t *keys, ngx_str_t *value, ngx_str_t *uri); |
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43 static ngx_int_t ngx_http_add_regex_referer(ngx_conf_t *cf, |
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44 ngx_http_referer_conf_t *rlcf, ngx_str_t *name); |
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45 #if (NGX_PCRE) |
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46 static ngx_int_t ngx_http_add_regex_server_name(ngx_conf_t *cf, |
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47 ngx_http_referer_conf_t *rlcf, ngx_http_regex_t *regex); |
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48 #endif |
| 593 | 49 static int ngx_libc_cdecl ngx_http_cmp_referer_wildcards(const void *one, |
| 50 const void *two); | |
| 577 | 51 |
| 52 | |
| 53 static ngx_command_t ngx_http_referer_commands[] = { | |
| 54 | |
| 55 { ngx_string("valid_referers"), | |
| 56 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 57 ngx_http_valid_referers, | |
| 58 NGX_HTTP_LOC_CONF_OFFSET, | |
| 59 0, | |
| 60 NULL }, | |
| 61 | |
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62 { ngx_string("referer_hash_max_size"), |
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63 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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64 ngx_conf_set_num_slot, |
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65 NGX_HTTP_LOC_CONF_OFFSET, |
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66 offsetof(ngx_http_referer_conf_t, referer_hash_max_size), |
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67 NULL }, |
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68 |
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69 { ngx_string("referer_hash_bucket_size"), |
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70 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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71 ngx_conf_set_num_slot, |
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72 NGX_HTTP_LOC_CONF_OFFSET, |
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73 offsetof(ngx_http_referer_conf_t, referer_hash_bucket_size), |
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74 NULL }, |
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75 |
| 577 | 76 ngx_null_command |
| 77 }; | |
| 78 | |
| 79 | |
| 80 static ngx_http_module_t ngx_http_referer_module_ctx = { | |
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81 ngx_http_referer_add_variables, /* preconfiguration */ |
| 577 | 82 NULL, /* postconfiguration */ |
| 83 | |
| 84 NULL, /* create main configuration */ | |
| 85 NULL, /* init main configuration */ | |
| 86 | |
| 87 NULL, /* create server configuration */ | |
| 88 NULL, /* merge server configuration */ | |
| 89 | |
| 90 ngx_http_referer_create_conf, /* create location configuration */ | |
| 91 ngx_http_referer_merge_conf /* merge location configuration */ | |
| 92 }; | |
| 93 | |
| 94 | |
| 95 ngx_module_t ngx_http_referer_module = { | |
| 96 NGX_MODULE_V1, | |
| 97 &ngx_http_referer_module_ctx, /* module context */ | |
| 98 ngx_http_referer_commands, /* module directives */ | |
| 99 NGX_HTTP_MODULE, /* module type */ | |
| 100 NULL, /* init master */ | |
| 101 NULL, /* init module */ | |
| 102 NULL, /* init process */ | |
| 103 NULL, /* init thread */ | |
| 104 NULL, /* exit thread */ | |
| 105 NULL, /* exit process */ | |
| 106 NULL, /* exit master */ | |
| 107 NGX_MODULE_V1_PADDING | |
| 108 }; | |
| 109 | |
| 110 | |
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111 static ngx_str_t ngx_http_invalid_referer_name = ngx_string("invalid_referer"); |
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112 |
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113 |
| 577 | 114 static ngx_int_t |
| 115 ngx_http_referer_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, | |
| 6474 | 116 uintptr_t data) |
| 577 | 117 { |
| 1388 | 118 u_char *p, *ref, *last; |
| 119 size_t len; | |
| 120 ngx_str_t *uri; | |
| 121 ngx_uint_t i, key; | |
| 122 ngx_http_referer_conf_t *rlcf; | |
| 123 u_char buf[256]; | |
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124 #if (NGX_PCRE) |
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125 ngx_int_t rc; |
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126 ngx_str_t referer; |
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127 #endif |
| 577 | 128 |
| 593 | 129 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_referer_module); |
| 577 | 130 |
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131 if (rlcf->hash.hash.buckets == NULL |
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132 && rlcf->hash.wc_head == NULL |
| 1388 | 133 && rlcf->hash.wc_tail == NULL |
| 134 #if (NGX_PCRE) | |
| 135 && rlcf->regex == NULL | |
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136 && rlcf->server_name_regex == NULL |
| 1388 | 137 #endif |
| 138 ) | |
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139 { |
| 595 | 140 goto valid; |
| 577 | 141 } |
| 142 | |
| 143 if (r->headers_in.referer == NULL) { | |
| 593 | 144 if (rlcf->no_referer) { |
| 595 | 145 goto valid; |
| 146 } | |
| 577 | 147 |
| 595 | 148 goto invalid; |
| 577 | 149 } |
| 150 | |
| 151 len = r->headers_in.referer->value.len; | |
| 152 ref = r->headers_in.referer->value.data; | |
| 153 | |
| 3459 | 154 if (len >= sizeof("http://i.ru") - 1) { |
| 155 last = ref + len; | |
| 156 | |
| 157 if (ngx_strncasecmp(ref, (u_char *) "http://", 7) == 0) { | |
| 158 ref += 7; | |
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159 len -= 7; |
| 3459 | 160 goto valid_scheme; |
| 161 | |
| 162 } else if (ngx_strncasecmp(ref, (u_char *) "https://", 8) == 0) { | |
| 163 ref += 8; | |
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164 len -= 8; |
| 3459 | 165 goto valid_scheme; |
| 595 | 166 } |
| 577 | 167 } |
| 168 | |
| 3459 | 169 if (rlcf->blocked_referer) { |
| 170 goto valid; | |
| 171 } | |
| 172 | |
| 173 goto invalid; | |
| 174 | |
| 175 valid_scheme: | |
| 176 | |
| 595 | 177 i = 0; |
| 178 key = 0; | |
| 577 | 179 |
| 595 | 180 for (p = ref; p < last; p++) { |
| 593 | 181 if (*p == '/' || *p == ':') { |
| 182 break; | |
| 577 | 183 } |
| 595 | 184 |
| 185 if (i == 256) { | |
| 186 goto invalid; | |
| 187 } | |
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188 |
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189 buf[i] = ngx_tolower(*p); |
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190 key = ngx_hash(key, buf[i++]); |
| 593 | 191 } |
| 577 | 192 |
| 1388 | 193 uri = ngx_hash_find_combined(&rlcf->hash, key, buf, p - ref); |
| 577 | 194 |
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195 if (uri) { |
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196 goto uri; |
| 577 | 197 } |
| 198 | |
| 1388 | 199 #if (NGX_PCRE) |
| 200 | |
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201 if (rlcf->server_name_regex) { |
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202 referer.len = p - ref; |
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203 referer.data = buf; |
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204 |
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205 rc = ngx_regex_exec_array(rlcf->server_name_regex, &referer, |
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206 r->connection->log); |
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207 |
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208 if (rc == NGX_OK) { |
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209 goto valid; |
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210 } |
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211 |
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212 if (rc == NGX_ERROR) { |
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213 return rc; |
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214 } |
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215 |
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216 /* NGX_DECLINED */ |
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217 } |
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218 |
| 1388 | 219 if (rlcf->regex) { |
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220 referer.len = len; |
| 1388 | 221 referer.data = ref; |
| 222 | |
| 1785 | 223 rc = ngx_regex_exec_array(rlcf->regex, &referer, r->connection->log); |
| 1388 | 224 |
| 1785 | 225 if (rc == NGX_OK) { |
| 1388 | 226 goto valid; |
| 227 } | |
| 1785 | 228 |
| 229 if (rc == NGX_ERROR) { | |
| 230 return rc; | |
| 231 } | |
| 232 | |
| 233 /* NGX_DECLINED */ | |
| 1388 | 234 } |
| 235 | |
| 236 #endif | |
| 237 | |
| 595 | 238 invalid: |
| 239 | |
| 577 | 240 *v = ngx_http_variable_true_value; |
| 241 | |
| 242 return NGX_OK; | |
| 595 | 243 |
| 244 uri: | |
| 245 | |
| 246 for ( /* void */ ; p < last; p++) { | |
| 247 if (*p == '/') { | |
| 248 break; | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 len = last - p; | |
| 253 | |
| 254 if (uri == NGX_HTTP_REFERER_NO_URI_PART) { | |
| 255 goto valid; | |
| 256 } | |
| 257 | |
| 258 if (len < uri->len || ngx_strncmp(uri->data, p, uri->len) != 0) { | |
| 259 goto invalid; | |
| 260 } | |
| 261 | |
| 262 valid: | |
| 263 | |
| 264 *v = ngx_http_variable_null_value; | |
| 265 | |
| 266 return NGX_OK; | |
| 577 | 267 } |
| 268 | |
| 269 | |
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270 static ngx_int_t |
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271 ngx_http_referer_add_variables(ngx_conf_t *cf) |
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272 { |
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273 ngx_http_variable_t *var; |
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274 |
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275 var = ngx_http_add_variable(cf, &ngx_http_invalid_referer_name, |
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276 NGX_HTTP_VAR_CHANGEABLE); |
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277 if (var == NULL) { |
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278 return NGX_ERROR; |
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279 } |
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280 |
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281 var->get_handler = ngx_http_referer_variable; |
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282 |
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283 return NGX_OK; |
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284 } |
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285 |
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286 |
| 577 | 287 static void * |
| 288 ngx_http_referer_create_conf(ngx_conf_t *cf) | |
| 289 { | |
| 290 ngx_http_referer_conf_t *conf; | |
| 291 | |
| 593 | 292 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_referer_conf_t)); |
| 577 | 293 if (conf == NULL) { |
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294 return NULL; |
| 577 | 295 } |
| 296 | |
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297 /* |
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298 * set by ngx_pcalloc(): |
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299 * |
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300 * conf->hash = { NULL }; |
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301 * conf->server_names = 0; |
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302 * conf->keys = NULL; |
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303 */ |
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304 |
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305 #if (NGX_PCRE) |
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306 conf->regex = NGX_CONF_UNSET_PTR; |
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307 conf->server_name_regex = NGX_CONF_UNSET_PTR; |
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308 #endif |
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309 |
| 577 | 310 conf->no_referer = NGX_CONF_UNSET; |
| 311 conf->blocked_referer = NGX_CONF_UNSET; | |
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312 conf->referer_hash_max_size = NGX_CONF_UNSET_UINT; |
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313 conf->referer_hash_bucket_size = NGX_CONF_UNSET_UINT; |
| 577 | 314 |
| 315 return conf; | |
| 316 } | |
| 317 | |
| 318 | |
| 319 static char * | |
| 320 ngx_http_referer_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 321 { | |
| 322 ngx_http_referer_conf_t *prev = parent; | |
| 323 ngx_http_referer_conf_t *conf = child; | |
| 324 | |
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325 ngx_uint_t n; |
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326 ngx_hash_init_t hash; |
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327 ngx_http_server_name_t *sn; |
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328 ngx_http_core_srv_conf_t *cscf; |
| 593 | 329 |
| 330 if (conf->keys == NULL) { | |
| 331 conf->hash = prev->hash; | |
| 332 | |
| 1800 | 333 #if (NGX_PCRE) |
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334 ngx_conf_merge_ptr_value(conf->regex, prev->regex, NULL); |
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335 ngx_conf_merge_ptr_value(conf->server_name_regex, |
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336 prev->server_name_regex, NULL); |
| 1800 | 337 #endif |
| 577 | 338 ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0); |
| 339 ngx_conf_merge_value(conf->blocked_referer, prev->blocked_referer, 0); | |
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340 ngx_conf_merge_uint_value(conf->referer_hash_max_size, |
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341 prev->referer_hash_max_size, 2048); |
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342 ngx_conf_merge_uint_value(conf->referer_hash_bucket_size, |
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343 prev->referer_hash_bucket_size, 64); |
| 593 | 344 |
| 345 return NGX_CONF_OK; | |
| 346 } | |
| 347 | |
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348 if (conf->server_names == 1) { |
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349 cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module); |
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350 |
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351 sn = cscf->server_names.elts; |
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352 for (n = 0; n < cscf->server_names.nelts; n++) { |
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353 |
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354 #if (NGX_PCRE) |
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355 if (sn[n].regex) { |
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356 |
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357 if (ngx_http_add_regex_server_name(cf, conf, sn[n].regex) |
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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 continue; |
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364 } |
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365 #endif |
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366 |
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367 if (ngx_http_add_referer(cf, conf->keys, &sn[n].name, NULL) |
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368 != NGX_OK) |
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369 { |
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370 return NGX_CONF_ERROR; |
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371 } |
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372 } |
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373 } |
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374 |
| 603 | 375 if ((conf->no_referer == 1 || conf->blocked_referer == 1) |
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376 && conf->keys->keys.nelts == 0 |
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377 && conf->keys->dns_wc_head.nelts == 0 |
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378 && conf->keys->dns_wc_tail.nelts == 0) |
| 603 | 379 { |
| 380 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 381 "the \"none\" or \"blocked\" referers are specified " | |
| 382 "in the \"valid_referers\" directive " | |
| 383 "without any valid referer"); | |
| 384 return NGX_CONF_ERROR; | |
| 385 } | |
| 386 | |
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387 ngx_conf_merge_uint_value(conf->referer_hash_max_size, |
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388 prev->referer_hash_max_size, 2048); |
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389 ngx_conf_merge_uint_value(conf->referer_hash_bucket_size, |
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390 prev->referer_hash_bucket_size, 64); |
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391 conf->referer_hash_bucket_size = ngx_align(conf->referer_hash_bucket_size, |
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392 ngx_cacheline_size); |
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393 |
| 593 | 394 hash.key = ngx_hash_key_lc; |
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395 hash.max_size = conf->referer_hash_max_size; |
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396 hash.bucket_size = conf->referer_hash_bucket_size; |
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397 hash.name = "referer_hash"; |
| 593 | 398 hash.pool = cf->pool; |
| 399 | |
| 400 if (conf->keys->keys.nelts) { | |
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401 hash.hash = &conf->hash.hash; |
| 593 | 402 hash.temp_pool = NULL; |
| 403 | |
| 404 if (ngx_hash_init(&hash, conf->keys->keys.elts, conf->keys->keys.nelts) | |
| 405 != NGX_OK) | |
| 406 { | |
| 407 return NGX_CONF_ERROR; | |
| 408 } | |
| 409 } | |
| 410 | |
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411 if (conf->keys->dns_wc_head.nelts) { |
| 593 | 412 |
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413 ngx_qsort(conf->keys->dns_wc_head.elts, |
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414 (size_t) conf->keys->dns_wc_head.nelts, |
| 593 | 415 sizeof(ngx_hash_key_t), |
| 416 ngx_http_cmp_referer_wildcards); | |
| 417 | |
| 418 hash.hash = NULL; | |
| 419 hash.temp_pool = cf->temp_pool; | |
| 420 | |
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421 if (ngx_hash_wildcard_init(&hash, conf->keys->dns_wc_head.elts, |
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422 conf->keys->dns_wc_head.nelts) |
| 593 | 423 != NGX_OK) |
| 424 { | |
| 425 return NGX_CONF_ERROR; | |
| 426 } | |
| 427 | |
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428 conf->hash.wc_head = (ngx_hash_wildcard_t *) hash.hash; |
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429 } |
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430 |
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431 if (conf->keys->dns_wc_tail.nelts) { |
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432 |
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433 ngx_qsort(conf->keys->dns_wc_tail.elts, |
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434 (size_t) conf->keys->dns_wc_tail.nelts, |
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435 sizeof(ngx_hash_key_t), |
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436 ngx_http_cmp_referer_wildcards); |
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437 |
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438 hash.hash = NULL; |
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439 hash.temp_pool = cf->temp_pool; |
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440 |
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441 if (ngx_hash_wildcard_init(&hash, conf->keys->dns_wc_tail.elts, |
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442 conf->keys->dns_wc_tail.nelts) |
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443 != NGX_OK) |
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444 { |
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445 return NGX_CONF_ERROR; |
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446 } |
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447 |
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448 conf->hash.wc_tail = (ngx_hash_wildcard_t *) hash.hash; |
| 577 | 449 } |
| 450 | |
| 1800 | 451 #if (NGX_PCRE) |
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452 ngx_conf_merge_ptr_value(conf->regex, prev->regex, NULL); |
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453 ngx_conf_merge_ptr_value(conf->server_name_regex, prev->server_name_regex, |
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454 NULL); |
| 1800 | 455 #endif |
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456 |
| 577 | 457 if (conf->no_referer == NGX_CONF_UNSET) { |
| 458 conf->no_referer = 0; | |
| 459 } | |
| 460 | |
| 461 if (conf->blocked_referer == NGX_CONF_UNSET) { | |
| 462 conf->blocked_referer = 0; | |
| 463 } | |
| 464 | |
| 611 | 465 conf->keys = NULL; |
| 466 | |
| 577 | 467 return NGX_CONF_OK; |
| 468 } | |
| 469 | |
| 470 | |
| 471 static char * | |
| 472 ngx_http_valid_referers(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 473 { | |
| 593 | 474 ngx_http_referer_conf_t *rlcf = conf; |
| 577 | 475 |
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476 u_char *p; |
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477 ngx_str_t *value, uri; |
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478 ngx_uint_t i; |
| 577 | 479 |
| 593 | 480 if (rlcf->keys == NULL) { |
| 481 rlcf->keys = ngx_pcalloc(cf->temp_pool, sizeof(ngx_hash_keys_arrays_t)); | |
| 482 if (rlcf->keys == NULL) { | |
| 483 return NGX_CONF_ERROR; | |
| 484 } | |
| 577 | 485 |
| 593 | 486 rlcf->keys->pool = cf->pool; |
| 487 rlcf->keys->temp_pool = cf->pool; | |
| 488 | |
| 489 if (ngx_hash_keys_array_init(rlcf->keys, NGX_HASH_SMALL) != NGX_OK) { | |
| 577 | 490 return NGX_CONF_ERROR; |
| 491 } | |
| 492 } | |
| 493 | |
| 494 value = cf->args->elts; | |
| 495 | |
| 496 for (i = 1; i < cf->args->nelts; i++) { | |
| 497 if (value[i].len == 0) { | |
| 498 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 499 "invalid referer \"%V\"", &value[i]); | |
| 500 return NGX_CONF_ERROR; | |
| 501 } | |
| 502 | |
| 503 if (ngx_strcmp(value[i].data, "none") == 0) { | |
| 593 | 504 rlcf->no_referer = 1; |
| 577 | 505 continue; |
| 506 } | |
| 507 | |
| 508 if (ngx_strcmp(value[i].data, "blocked") == 0) { | |
| 593 | 509 rlcf->blocked_referer = 1; |
| 577 | 510 continue; |
| 511 } | |
| 512 | |
| 513 if (ngx_strcmp(value[i].data, "server_names") == 0) { | |
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514 rlcf->server_names = 1; |
| 577 | 515 continue; |
| 516 } | |
| 517 | |
| 1388 | 518 if (value[i].data[0] == '~') { |
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519 if (ngx_http_add_regex_referer(cf, rlcf, &value[i]) != NGX_OK) { |
| 1388 | 520 return NGX_CONF_ERROR; |
| 521 } | |
| 522 | |
| 523 continue; | |
| 524 } | |
| 525 | |
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526 ngx_str_null(&uri); |
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527 |
| 1242 | 528 p = (u_char *) ngx_strchr(value[i].data, '/'); |
| 577 | 529 |
| 593 | 530 if (p) { |
| 595 | 531 uri.len = (value[i].data + value[i].len) - p; |
| 532 uri.data = p; | |
| 593 | 533 value[i].len = p - value[i].data; |
| 577 | 534 } |
| 535 | |
| 595 | 536 if (ngx_http_add_referer(cf, rlcf->keys, &value[i], &uri) != NGX_OK) { |
| 577 | 537 return NGX_CONF_ERROR; |
| 538 } | |
| 539 } | |
| 540 | |
| 541 return NGX_CONF_OK; | |
| 542 } | |
| 593 | 543 |
| 544 | |
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545 static ngx_int_t |
| 593 | 546 ngx_http_add_referer(ngx_conf_t *cf, ngx_hash_keys_arrays_t *keys, |
| 595 | 547 ngx_str_t *value, ngx_str_t *uri) |
| 593 | 548 { |
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549 ngx_int_t rc; |
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550 ngx_str_t *u; |
| 593 | 551 |
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552 if (uri == NULL || uri->len == 0) { |
| 595 | 553 u = NGX_HTTP_REFERER_NO_URI_PART; |
| 554 | |
| 555 } else { | |
| 556 u = ngx_palloc(cf->pool, sizeof(ngx_str_t)); | |
| 557 if (u == NULL) { | |
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558 return NGX_ERROR; |
| 595 | 559 } |
| 560 | |
| 561 *u = *uri; | |
| 562 } | |
| 563 | |
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564 rc = ngx_hash_add_key(keys, value, u, NGX_HASH_WILDCARD_KEY); |
| 593 | 565 |
| 566 if (rc == NGX_OK) { | |
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567 return NGX_OK; |
| 593 | 568 } |
| 569 | |
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570 if (rc == NGX_DECLINED) { |
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571 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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572 "invalid hostname or wildcard \"%V\"", value); |
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573 } |
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574 |
| 593 | 575 if (rc == NGX_BUSY) { |
| 576 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 577 "conflicting parameter \"%V\"", value); | |
| 578 } | |
| 579 | |
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580 return NGX_ERROR; |
| 593 | 581 } |
| 582 | |
| 583 | |
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|
584 static ngx_int_t |
| 1388 | 585 ngx_http_add_regex_referer(ngx_conf_t *cf, ngx_http_referer_conf_t *rlcf, |
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586 ngx_str_t *name) |
| 1388 | 587 { |
| 588 #if (NGX_PCRE) | |
| 3325 | 589 ngx_regex_elt_t *re; |
| 590 ngx_regex_compile_t rc; | |
| 591 u_char errstr[NGX_MAX_CONF_ERRSTR]; | |
| 1388 | 592 |
|
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593 if (name->len == 1) { |
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594 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "empty regex in \"%V\"", name); |
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595 return NGX_ERROR; |
|
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596 } |
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597 |
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598 if (rlcf->regex == NGX_CONF_UNSET_PTR) { |
| 1785 | 599 rlcf->regex = ngx_array_create(cf->pool, 2, sizeof(ngx_regex_elt_t)); |
| 1388 | 600 if (rlcf->regex == NULL) { |
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601 return NGX_ERROR; |
| 1388 | 602 } |
| 603 } | |
| 604 | |
| 1785 | 605 re = ngx_array_push(rlcf->regex); |
| 606 if (re == NULL) { | |
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607 return NGX_ERROR; |
| 1388 | 608 } |
| 609 | |
| 610 name->len--; | |
| 611 name->data++; | |
| 612 | |
| 3325 | 613 ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); |
| 1388 | 614 |
| 3325 | 615 rc.pattern = *name; |
| 616 rc.pool = cf->pool; | |
| 617 rc.options = NGX_REGEX_CASELESS; | |
| 618 rc.err.len = NGX_MAX_CONF_ERRSTR; | |
| 619 rc.err.data = errstr; | |
| 620 | |
| 621 if (ngx_regex_compile(&rc) != NGX_OK) { | |
| 622 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V", &rc.err); | |
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623 return NGX_ERROR; |
| 1388 | 624 } |
| 625 | |
| 3325 | 626 re->regex = rc.regex; |
| 1785 | 627 re->name = name->data; |
| 1388 | 628 |
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629 return NGX_OK; |
| 1388 | 630 |
| 631 #else | |
| 632 | |
| 633 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 634 "the using of the regex \"%V\" requires PCRE library", | |
| 635 name); | |
| 636 | |
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637 return NGX_ERROR; |
| 1388 | 638 |
| 639 #endif | |
| 640 } | |
| 641 | |
| 642 | |
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643 #if (NGX_PCRE) |
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644 |
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645 static ngx_int_t |
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646 ngx_http_add_regex_server_name(ngx_conf_t *cf, ngx_http_referer_conf_t *rlcf, |
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647 ngx_http_regex_t *regex) |
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648 { |
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649 ngx_regex_elt_t *re; |
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650 |
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651 if (rlcf->server_name_regex == NGX_CONF_UNSET_PTR) { |
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652 rlcf->server_name_regex = ngx_array_create(cf->pool, 2, |
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653 sizeof(ngx_regex_elt_t)); |
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654 if (rlcf->server_name_regex == NULL) { |
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655 return NGX_ERROR; |
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656 } |
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657 } |
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658 |
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659 re = ngx_array_push(rlcf->server_name_regex); |
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660 if (re == NULL) { |
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661 return NGX_ERROR; |
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662 } |
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663 |
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664 re->regex = regex->regex; |
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8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
665 re->name = regex->name.data; |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
666 |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
667 return NGX_OK; |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
668 } |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
669 |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
670 #endif |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
671 |
|
8220e393c241
Referer: fixed server_name regex matching.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5349
diff
changeset
|
672 |
| 593 | 673 static int ngx_libc_cdecl |
| 674 ngx_http_cmp_referer_wildcards(const void *one, const void *two) | |
| 675 { | |
| 676 ngx_hash_key_t *first, *second; | |
| 677 | |
| 678 first = (ngx_hash_key_t *) one; | |
| 679 second = (ngx_hash_key_t *) two; | |
| 680 | |
|
3116
98e288c6dac3
If .domain.com, .sub.domain.com, and .domain-some.com were defined,
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
681 return ngx_dns_strcmp(first->key.data, second->key.data); |
| 593 | 682 } |