|
138
|
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
|
|
|
12 typedef struct {
|
|
|
13 ngx_uint_t hash_max_size;
|
|
|
14 ngx_uint_t hash_bucket_size;
|
|
|
15 } ngx_http_map_conf_t;
|
|
|
16
|
|
|
17
|
|
|
18 typedef struct {
|
|
142
|
19 ngx_hash_keys_arrays_t keys;
|
|
138
|
20
|
|
|
21 ngx_array_t *values_hash;
|
|
|
22
|
|
|
23 ngx_http_variable_value_t *default_value;
|
|
|
24 ngx_uint_t hostnames; /* unsigned hostnames:1 */
|
|
|
25 } ngx_http_map_conf_ctx_t;
|
|
|
26
|
|
|
27
|
|
|
28 typedef struct {
|
|
|
29 ngx_hash_t hash;
|
|
|
30 ngx_hash_wildcard_t *dns_wildcards;
|
|
|
31 ngx_int_t index;
|
|
|
32 ngx_http_variable_value_t *default_value;
|
|
|
33 ngx_uint_t hostnames; /* unsigned hostnames:1 */
|
|
|
34 } ngx_http_map_ctx_t;
|
|
|
35
|
|
|
36
|
|
|
37 static int ngx_libc_cdecl ngx_http_map_cmp_dns_wildcards(const void *one,
|
|
|
38 const void *two);
|
|
|
39 static void *ngx_http_map_create_conf(ngx_conf_t *cf);
|
|
|
40 static char *ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
|
41 static char *ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf);
|
|
|
42
|
|
|
43
|
|
|
44 static ngx_command_t ngx_http_map_commands[] = {
|
|
|
45
|
|
|
46 { ngx_string("map"),
|
|
|
47 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE2,
|
|
|
48 ngx_http_map_block,
|
|
|
49 NGX_HTTP_MAIN_CONF_OFFSET,
|
|
|
50 0,
|
|
|
51 NULL },
|
|
|
52
|
|
|
53 { ngx_string("map_hash_max_size"),
|
|
|
54 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
|
|
|
55 ngx_conf_set_num_slot,
|
|
|
56 NGX_HTTP_MAIN_CONF_OFFSET,
|
|
|
57 offsetof(ngx_http_map_conf_t, hash_max_size),
|
|
|
58 NULL },
|
|
|
59
|
|
|
60 { ngx_string("map_hash_bucket_size"),
|
|
|
61 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
|
|
|
62 ngx_conf_set_num_slot,
|
|
|
63 NGX_HTTP_MAIN_CONF_OFFSET,
|
|
|
64 offsetof(ngx_http_map_conf_t, hash_bucket_size),
|
|
|
65 NULL },
|
|
|
66
|
|
|
67 ngx_null_command
|
|
|
68 };
|
|
|
69
|
|
|
70
|
|
|
71 static ngx_http_module_t ngx_http_map_module_ctx = {
|
|
|
72 NULL, /* preconfiguration */
|
|
|
73 NULL, /* postconfiguration */
|
|
|
74
|
|
|
75 ngx_http_map_create_conf, /* create main configuration */
|
|
|
76 NULL, /* init main configuration */
|
|
|
77
|
|
|
78 NULL, /* create server configuration */
|
|
|
79 NULL, /* merge server configuration */
|
|
|
80
|
|
|
81 NULL, /* create location configuration */
|
|
|
82 NULL /* merge location configuration */
|
|
|
83 };
|
|
|
84
|
|
|
85
|
|
|
86 ngx_module_t ngx_http_map_module = {
|
|
|
87 NGX_MODULE_V1,
|
|
|
88 &ngx_http_map_module_ctx, /* module context */
|
|
|
89 ngx_http_map_commands, /* module directives */
|
|
|
90 NGX_HTTP_MODULE, /* module type */
|
|
|
91 NULL, /* init master */
|
|
|
92 NULL, /* init module */
|
|
|
93 NULL, /* init process */
|
|
|
94 NULL, /* init thread */
|
|
|
95 NULL, /* exit thread */
|
|
|
96 NULL, /* exit process */
|
|
|
97 NULL, /* exit master */
|
|
|
98 NGX_MODULE_V1_PADDING
|
|
|
99 };
|
|
|
100
|
|
|
101
|
|
|
102 static ngx_int_t
|
|
|
103 ngx_http_map_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
104 uintptr_t data)
|
|
|
105 {
|
|
|
106 ngx_http_map_ctx_t *map = (ngx_http_map_ctx_t *) data;
|
|
|
107
|
|
|
108 size_t len;
|
|
|
109 u_char *name;
|
|
|
110 ngx_uint_t key, i;
|
|
|
111 ngx_http_variable_value_t *vv, *value;
|
|
|
112
|
|
|
113 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
114 "http map started");
|
|
|
115
|
|
|
116 vv = ngx_http_get_flushed_variable(r, map->index);
|
|
|
117
|
|
250
|
118 if (vv == NULL || vv->not_found) {
|
|
|
119 *v = *map->default_value;
|
|
|
120 return NGX_OK;
|
|
|
121 }
|
|
|
122
|
|
138
|
123 len = vv->len;
|
|
|
124
|
|
|
125 if (len && map->hostnames && vv->data[len - 1] == '.') {
|
|
|
126 len--;
|
|
|
127 }
|
|
|
128
|
|
|
129 if (len == 0) {
|
|
|
130 *v = *map->default_value;
|
|
|
131 return NGX_OK;
|
|
|
132 }
|
|
|
133
|
|
|
134 name = ngx_palloc(r->pool, len);
|
|
|
135 if (name == NULL) {
|
|
|
136 return NGX_ERROR;
|
|
|
137 }
|
|
|
138
|
|
|
139 key = 0;
|
|
|
140 for (i = 0; i < len; i++) {
|
|
|
141 name[i] = ngx_tolower(vv->data[i]);
|
|
|
142 key = ngx_hash(key, name[i]);
|
|
|
143 }
|
|
|
144
|
|
|
145 value = NULL;
|
|
|
146
|
|
|
147 if (map->hash.buckets) {
|
|
|
148 value = ngx_hash_find(&map->hash, key, name, len);
|
|
|
149 }
|
|
|
150
|
|
|
151 if (value) {
|
|
|
152 *v = *value;
|
|
|
153
|
|
|
154 } else {
|
|
|
155 if (map->dns_wildcards && map->dns_wildcards->hash.buckets) {
|
|
|
156 value = ngx_hash_find_wildcard(map->dns_wildcards, name, len);
|
|
|
157 if (value) {
|
|
|
158 *v = *value;
|
|
|
159
|
|
|
160 } else {
|
|
|
161 *v = *map->default_value;
|
|
|
162 }
|
|
|
163
|
|
|
164 } else {
|
|
|
165 *v = *map->default_value;
|
|
|
166 }
|
|
|
167 }
|
|
|
168
|
|
|
169 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
170 "http map: \"%V\" \"%V\"", vv, v);
|
|
|
171
|
|
|
172 return NGX_OK;
|
|
|
173 }
|
|
|
174
|
|
|
175
|
|
|
176 static void *
|
|
|
177 ngx_http_map_create_conf(ngx_conf_t *cf)
|
|
|
178 {
|
|
|
179 ngx_http_map_conf_t *mcf;
|
|
|
180
|
|
|
181 mcf = ngx_palloc(cf->pool, sizeof(ngx_http_map_conf_t));
|
|
|
182 if (mcf == NULL) {
|
|
|
183 return NGX_CONF_ERROR;
|
|
|
184 }
|
|
|
185
|
|
|
186 mcf->hash_max_size = NGX_CONF_UNSET_UINT;
|
|
|
187 mcf->hash_bucket_size = NGX_CONF_UNSET_UINT;
|
|
|
188
|
|
|
189 return mcf;
|
|
|
190 }
|
|
|
191
|
|
|
192
|
|
|
193 static char *
|
|
|
194 ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
195 {
|
|
|
196 ngx_http_map_conf_t *mcf = conf;
|
|
|
197
|
|
|
198 char *rv;
|
|
|
199 ngx_str_t *value, name;
|
|
|
200 ngx_conf_t save;
|
|
|
201 ngx_pool_t *pool;
|
|
|
202 ngx_hash_init_t hash;
|
|
|
203 ngx_http_map_ctx_t *map;
|
|
|
204 ngx_http_variable_t *var;
|
|
|
205 ngx_http_map_conf_ctx_t ctx;
|
|
|
206
|
|
|
207 if (mcf->hash_max_size == NGX_CONF_UNSET_UINT) {
|
|
|
208 mcf->hash_max_size = 2048;
|
|
|
209 }
|
|
|
210
|
|
|
211 if (mcf->hash_bucket_size == NGX_CONF_UNSET_UINT) {
|
|
|
212 mcf->hash_bucket_size = ngx_cacheline_size;
|
|
|
213
|
|
|
214 } else {
|
|
|
215 mcf->hash_bucket_size = ngx_align(mcf->hash_bucket_size,
|
|
|
216 ngx_cacheline_size);
|
|
|
217 }
|
|
|
218
|
|
|
219 map = ngx_pcalloc(cf->pool, sizeof(ngx_http_map_ctx_t));
|
|
|
220 if (map == NULL) {
|
|
|
221 return NGX_CONF_ERROR;
|
|
|
222 }
|
|
|
223
|
|
|
224 value = cf->args->elts;
|
|
|
225
|
|
|
226 name = value[1];
|
|
|
227 name.len--;
|
|
|
228 name.data++;
|
|
|
229
|
|
|
230 map->index = ngx_http_get_variable_index(cf, &name);
|
|
|
231
|
|
|
232 if (map->index == NGX_ERROR) {
|
|
|
233 return NGX_CONF_ERROR;
|
|
|
234 }
|
|
|
235
|
|
|
236 name = value[2];
|
|
|
237 name.len--;
|
|
|
238 name.data++;
|
|
|
239
|
|
|
240 var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGABLE);
|
|
|
241 if (var == NULL) {
|
|
|
242 return NGX_CONF_ERROR;
|
|
|
243 }
|
|
|
244
|
|
186
|
245 var->get_handler = ngx_http_map_variable;
|
|
138
|
246 var->data = (uintptr_t) map;
|
|
|
247
|
|
|
248 pool = ngx_create_pool(16384, cf->log);
|
|
|
249 if (pool == NULL) {
|
|
|
250 return NGX_CONF_ERROR;
|
|
|
251 }
|
|
|
252
|
|
142
|
253 ctx.keys.pool = cf->pool;
|
|
|
254 ctx.keys.temp_pool = pool;
|
|
138
|
255
|
|
142
|
256 if (ngx_hash_keys_array_init(&ctx.keys, NGX_HASH_LARGE) != NGX_OK) {
|
|
138
|
257 ngx_destroy_pool(pool);
|
|
|
258 return NGX_CONF_ERROR;
|
|
|
259 }
|
|
|
260
|
|
142
|
261 ctx.values_hash = ngx_pcalloc(pool, sizeof(ngx_array_t) * ctx.keys.hsize);
|
|
138
|
262 if (ctx.values_hash == NULL) {
|
|
|
263 ngx_destroy_pool(pool);
|
|
|
264 return NGX_CONF_ERROR;
|
|
|
265 }
|
|
|
266
|
|
|
267 ctx.default_value = NULL;
|
|
|
268 ctx.hostnames = 0;
|
|
|
269
|
|
|
270 save = *cf;
|
|
|
271 cf->pool = pool;
|
|
|
272 cf->ctx = &ctx;
|
|
|
273 cf->handler = ngx_http_map;
|
|
|
274 cf->handler_conf = conf;
|
|
|
275
|
|
|
276 rv = ngx_conf_parse(cf, NULL);
|
|
|
277
|
|
|
278 *cf = save;
|
|
|
279
|
|
|
280 if (rv != NGX_CONF_OK) {
|
|
|
281 ngx_destroy_pool(pool);
|
|
|
282 return rv;
|
|
|
283 }
|
|
|
284
|
|
|
285 hash.key = ngx_hash_key_lc;
|
|
|
286 hash.max_size = mcf->hash_max_size;
|
|
|
287 hash.bucket_size = mcf->hash_bucket_size;
|
|
|
288 hash.name = "map_hash";
|
|
|
289 hash.pool = cf->pool;
|
|
|
290
|
|
142
|
291 if (ctx.keys.keys.nelts) {
|
|
138
|
292 hash.hash = &map->hash;
|
|
|
293 hash.temp_pool = NULL;
|
|
|
294
|
|
142
|
295 if (ngx_hash_init(&hash, ctx.keys.keys.elts, ctx.keys.keys.nelts)
|
|
140
|
296 != NGX_OK)
|
|
|
297 {
|
|
142
|
298 ngx_destroy_pool(pool);
|
|
138
|
299 return NGX_CONF_ERROR;
|
|
|
300 }
|
|
|
301 }
|
|
|
302
|
|
|
303 map->default_value = ctx.default_value ? ctx.default_value:
|
|
|
304 &ngx_http_variable_null_value;
|
|
|
305
|
|
142
|
306 if (ctx.keys.dns_wildcards.nelts) {
|
|
138
|
307
|
|
142
|
308 ngx_qsort(ctx.keys.dns_wildcards.elts,
|
|
|
309 (size_t) ctx.keys.dns_wildcards.nelts,
|
|
138
|
310 sizeof(ngx_hash_key_t), ngx_http_map_cmp_dns_wildcards);
|
|
|
311
|
|
|
312 hash.hash = NULL;
|
|
|
313 hash.temp_pool = pool;
|
|
|
314
|
|
142
|
315 if (ngx_hash_wildcard_init(&hash, ctx.keys.dns_wildcards.elts,
|
|
|
316 ctx.keys.dns_wildcards.nelts)
|
|
138
|
317 != NGX_OK)
|
|
|
318 {
|
|
142
|
319 ngx_destroy_pool(pool);
|
|
138
|
320 return NGX_CONF_ERROR;
|
|
|
321 }
|
|
|
322
|
|
|
323 map->dns_wildcards = (ngx_hash_wildcard_t *) hash.hash;
|
|
|
324 }
|
|
|
325
|
|
|
326 ngx_destroy_pool(pool);
|
|
|
327
|
|
|
328 return rv;
|
|
|
329 }
|
|
|
330
|
|
|
331
|
|
|
332 static int ngx_libc_cdecl
|
|
|
333 ngx_http_map_cmp_dns_wildcards(const void *one, const void *two)
|
|
|
334 {
|
|
|
335 ngx_hash_key_t *first, *second;
|
|
|
336
|
|
|
337 first = (ngx_hash_key_t *) one;
|
|
|
338 second = (ngx_hash_key_t *) two;
|
|
|
339
|
|
|
340 return ngx_strcmp(first->key.data, second->key.data);
|
|
|
341 }
|
|
|
342
|
|
|
343
|
|
|
344 static char *
|
|
|
345 ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
|
|
|
346 {
|
|
140
|
347 u_char ch;
|
|
|
348 ngx_int_t rc;
|
|
|
349 ngx_str_t *value, file;
|
|
|
350 ngx_uint_t i, key, flags;
|
|
138
|
351 ngx_http_map_conf_ctx_t *ctx;
|
|
140
|
352 ngx_http_variable_value_t *var, **vp;
|
|
138
|
353
|
|
|
354 ctx = cf->ctx;
|
|
|
355
|
|
|
356 value = cf->args->elts;
|
|
|
357
|
|
|
358 if (cf->args->nelts == 1
|
|
|
359 && ngx_strcmp(value[0].data, "hostnames") == 0)
|
|
|
360 {
|
|
|
361 ctx->hostnames = 1;
|
|
|
362 return NGX_CONF_OK;
|
|
|
363
|
|
|
364 } else if (cf->args->nelts != 2) {
|
|
|
365 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
366 "invalid number of the map parameters");
|
|
|
367 return NGX_CONF_ERROR;
|
|
|
368
|
|
|
369 } else if (value[0].len == 0) {
|
|
|
370 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
371 "invalid first parameter");
|
|
|
372 return NGX_CONF_ERROR;
|
|
|
373 }
|
|
|
374
|
|
|
375 if (ngx_strcmp(value[0].data, "include") == 0) {
|
|
|
376 file = value[1];
|
|
|
377
|
|
|
378 if (ngx_conf_full_name(cf->cycle, &file) == NGX_ERROR){
|
|
|
379 return NGX_CONF_ERROR;
|
|
|
380 }
|
|
|
381
|
|
|
382 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data);
|
|
|
383
|
|
|
384 return ngx_conf_parse(cf, &file);
|
|
|
385 }
|
|
|
386
|
|
|
387 key = 0;
|
|
|
388
|
|
|
389 for (i = 0; i < value[1].len; i++) {
|
|
|
390 key = ngx_hash(key, value[1].data[i]);
|
|
|
391 }
|
|
|
392
|
|
142
|
393 key %= ctx->keys.hsize;
|
|
138
|
394
|
|
|
395 vp = ctx->values_hash[key].elts;
|
|
|
396
|
|
|
397 if (vp) {
|
|
|
398 for (i = 0; i < ctx->values_hash[key].nelts; i++) {
|
|
|
399 if (value[1].len != (size_t) vp[i]->len) {
|
|
|
400 continue;
|
|
|
401 }
|
|
|
402
|
|
|
403 if (ngx_strncmp(value[1].data, vp[i]->data, value[1].len) == 0) {
|
|
|
404 var = vp[i];
|
|
|
405 goto found;
|
|
|
406 }
|
|
|
407 }
|
|
|
408
|
|
|
409 } else {
|
|
|
410 if (ngx_array_init(&ctx->values_hash[key], cf->pool, 4,
|
|
|
411 sizeof(ngx_http_variable_value_t *))
|
|
|
412 != NGX_OK)
|
|
|
413 {
|
|
|
414 return NGX_CONF_ERROR;
|
|
|
415 }
|
|
|
416 }
|
|
|
417
|
|
142
|
418 var = ngx_palloc(ctx->keys.pool, sizeof(ngx_http_variable_value_t));
|
|
138
|
419 if (var == NULL) {
|
|
|
420 return NGX_CONF_ERROR;
|
|
|
421 }
|
|
|
422
|
|
|
423 var->len = value[1].len;
|
|
142
|
424 var->data = ngx_pstrdup(ctx->keys.pool, &value[1]);
|
|
138
|
425 if (var->data == NULL) {
|
|
|
426 return NGX_CONF_ERROR;
|
|
|
427 }
|
|
|
428
|
|
|
429 var->valid = 1;
|
|
|
430 var->no_cachable = 0;
|
|
|
431 var->not_found = 0;
|
|
|
432
|
|
|
433 vp = ngx_array_push(&ctx->values_hash[key]);
|
|
|
434 if (vp == NULL) {
|
|
|
435 return NGX_CONF_ERROR;
|
|
|
436 }
|
|
|
437
|
|
|
438 *vp = var;
|
|
|
439
|
|
|
440 found:
|
|
|
441
|
|
140
|
442 ch = value[0].data[0];
|
|
138
|
443
|
|
140
|
444 if ((ch != '*' && ch != '.') || ctx->hostnames == 0) {
|
|
138
|
445
|
|
140
|
446 if (ngx_strcmp(value[0].data, "default") == 0) {
|
|
138
|
447
|
|
140
|
448 if (ctx->default_value) {
|
|
|
449 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
450 "duplicate default map parameter");
|
|
138
|
451 return NGX_CONF_ERROR;
|
|
|
452 }
|
|
|
453
|
|
140
|
454 ctx->default_value = var;
|
|
138
|
455
|
|
140
|
456 return NGX_CONF_OK;
|
|
|
457 }
|
|
138
|
458
|
|
140
|
459 if (value[0].len && ch == '!') {
|
|
|
460 value[0].len--;
|
|
|
461 value[0].data++;
|
|
|
462 }
|
|
138
|
463
|
|
140
|
464 flags = 0;
|
|
138
|
465
|
|
|
466 } else {
|
|
|
467
|
|
140
|
468 if ((ch == '*' && (value[0].len < 3 || value[0].data[1] != '.'))
|
|
|
469 || (ch == '.' && value[0].len < 2))
|
|
|
470 {
|
|
138
|
471 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
472 "invalid DNS wildcard \"%V\"", &value[0]);
|
|
140
|
473
|
|
138
|
474 return NGX_CONF_ERROR;
|
|
|
475 }
|
|
|
476
|
|
142
|
477 flags = NGX_HASH_WILDCARD_KEY;
|
|
138
|
478 }
|
|
|
479
|
|
142
|
480 rc = ngx_hash_add_key(&ctx->keys, &value[0], var, flags);
|
|
138
|
481
|
|
140
|
482 if (rc == NGX_OK) {
|
|
|
483 return NGX_CONF_OK;
|
|
|
484 }
|
|
138
|
485
|
|
140
|
486 if (rc == NGX_BUSY) {
|
|
|
487 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
488 "conflicting parameter \"%V\"", &value[0]);
|
|
|
489 }
|
|
138
|
490
|
|
140
|
491 return NGX_CONF_ERROR;
|
|
138
|
492 }
|
