Mercurial > hg > nginx
annotate src/http/modules/ngx_http_map_module.c @ 4467:85a1570ce960
Removed r->cache/r->cached dependencies in range filter.
This is a layering violation, use correct offset calculations instead.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 13 Feb 2012 15:20:49 +0000 |
parents | d620f497c50f |
children | fd3eefefa5f9 |
rev | line source |
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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 | |
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 | |
3116
98e288c6dac3
If .domain.com, .sub.domain.com, and .domain-some.com were defined,
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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]; |
164a7f8df979
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408 name.len--; |
164a7f8df979
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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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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 |
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510 return NGX_CONF_OK; |
589 | 511 } |
512 | |
3872
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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 |
3930
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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 } |