|
34
|
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 {
|
|
38
|
13 ngx_radix_tree_t *tree;
|
|
|
14 ngx_pool_t *pool;
|
|
|
15 ngx_array_t values;
|
|
34
|
16 } ngx_http_geo_conf_t;
|
|
|
17
|
|
|
18
|
|
|
19 static char *ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
|
20 static char *ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf);
|
|
|
21
|
|
|
22
|
|
|
23 static ngx_command_t ngx_http_geo_commands[] = {
|
|
|
24
|
|
|
25 { ngx_string("geo"),
|
|
|
26 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
|
|
|
27 ngx_http_geo_block,
|
|
|
28 NGX_HTTP_MAIN_CONF_OFFSET,
|
|
|
29 0,
|
|
|
30 NULL },
|
|
|
31
|
|
|
32 ngx_null_command
|
|
|
33 };
|
|
|
34
|
|
|
35
|
|
|
36 static ngx_http_module_t ngx_http_geo_module_ctx = {
|
|
58
|
37 NULL, /* preconfiguration */
|
|
|
38 NULL, /* postconfiguration */
|
|
34
|
39
|
|
|
40 NULL, /* create main configuration */
|
|
|
41 NULL, /* init main configuration */
|
|
|
42
|
|
|
43 NULL, /* create server configuration */
|
|
|
44 NULL, /* merge server configuration */
|
|
|
45
|
|
|
46 NULL, /* create location configuration */
|
|
|
47 NULL /* merge location configuration */
|
|
|
48 };
|
|
|
49
|
|
|
50
|
|
|
51 ngx_module_t ngx_http_geo_module = {
|
|
58
|
52 NGX_MODULE_V1,
|
|
34
|
53 &ngx_http_geo_module_ctx, /* module context */
|
|
|
54 ngx_http_geo_commands, /* module directives */
|
|
|
55 NGX_HTTP_MODULE, /* module type */
|
|
90
|
56 NULL, /* init master */
|
|
34
|
57 NULL, /* init module */
|
|
90
|
58 NULL, /* init process */
|
|
|
59 NULL, /* init thread */
|
|
|
60 NULL, /* exit thread */
|
|
|
61 NULL, /* exit process */
|
|
|
62 NULL, /* exit master */
|
|
|
63 NGX_MODULE_V1_PADDING
|
|
34
|
64 };
|
|
|
65
|
|
|
66
|
|
|
67 /* AF_INET only */
|
|
|
68
|
|
122
|
69 static ngx_int_t
|
|
|
70 ngx_http_geo_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
71 uintptr_t data)
|
|
34
|
72 {
|
|
50
|
73 ngx_radix_tree_t *tree = (ngx_radix_tree_t *) data;
|
|
34
|
74
|
|
38
|
75 struct sockaddr_in *sin;
|
|
122
|
76 ngx_http_variable_value_t *vv;
|
|
34
|
77
|
|
|
78 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
|
79
|
|
38
|
80 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
81 "http geo started");
|
|
|
82
|
|
122
|
83 vv = (ngx_http_variable_value_t *)
|
|
34
|
84 ngx_radix32tree_find(tree, ntohl(sin->sin_addr.s_addr));
|
|
38
|
85
|
|
122
|
86 *v = *vv;
|
|
|
87
|
|
38
|
88 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
122
|
89 "http geo: %V %V", &r->connection->addr_text, v);
|
|
38
|
90
|
|
122
|
91 return NGX_OK;
|
|
34
|
92 }
|
|
|
93
|
|
|
94
|
|
38
|
95 static char *
|
|
|
96 ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
34
|
97 {
|
|
|
98 char *rv;
|
|
50
|
99 ngx_str_t *value, name;
|
|
34
|
100 ngx_conf_t save;
|
|
|
101 ngx_pool_t *pool;
|
|
|
102 ngx_radix_tree_t *tree;
|
|
|
103 ngx_http_geo_conf_t geo;
|
|
|
104 ngx_http_variable_t *var;
|
|
|
105
|
|
50
|
106 value = cf->args->elts;
|
|
|
107
|
|
|
108 name = value[1];
|
|
|
109
|
|
|
110 if (name.data[0] != '$') {
|
|
|
111 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
112 "\"%V\" variable name should start with '$'",
|
|
|
113 &value[1]);
|
|
|
114 } else {
|
|
|
115 name.len--;
|
|
|
116 name.data++;
|
|
|
117 }
|
|
|
118
|
|
96
|
119 var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGABLE);
|
|
50
|
120 if (var == NULL) {
|
|
34
|
121 return NGX_CONF_ERROR;
|
|
|
122 }
|
|
|
123
|
|
50
|
124 tree = ngx_radix_tree_create(cf->pool, -1);
|
|
112
|
125
|
|
50
|
126 if (tree == NULL) {
|
|
34
|
127 return NGX_CONF_ERROR;
|
|
|
128 }
|
|
|
129
|
|
|
130 var->handler = ngx_http_geo_variable;
|
|
50
|
131 var->data = (uintptr_t) tree;
|
|
34
|
132
|
|
|
133 /*
|
|
|
134 * create the temporary pool of a huge initial size
|
|
|
135 * to process quickly a large number of geo lines
|
|
|
136 */
|
|
|
137
|
|
50
|
138 pool = ngx_create_pool(512 * 1024, cf->log);
|
|
|
139 if (pool == NULL) {
|
|
34
|
140 return NGX_CONF_ERROR;
|
|
|
141 }
|
|
|
142
|
|
|
143 if (ngx_array_init(&geo.values, pool, 512,
|
|
|
144 sizeof(ngx_http_variable_value_t *)) == NGX_ERROR)
|
|
|
145 {
|
|
|
146 ngx_destroy_pool(pool);
|
|
|
147 return NGX_CONF_ERROR;
|
|
|
148 }
|
|
|
149
|
|
|
150 geo.tree = tree;
|
|
|
151 geo.pool = cf->pool;
|
|
|
152
|
|
|
153 save = *cf;
|
|
|
154 cf->pool = pool;
|
|
|
155 cf->ctx = &geo;
|
|
|
156 cf->handler = ngx_http_geo;
|
|
|
157 cf->handler_conf = conf;
|
|
|
158
|
|
|
159 rv = ngx_conf_parse(cf, NULL);
|
|
|
160
|
|
|
161 *cf = save;
|
|
|
162
|
|
|
163 ngx_destroy_pool(pool);
|
|
|
164
|
|
|
165 if (ngx_radix32tree_find(tree, 0) != NGX_RADIX_NO_VALUE) {
|
|
|
166 return rv;
|
|
|
167 }
|
|
|
168
|
|
|
169 if (ngx_radix32tree_insert(tree, 0, 0,
|
|
126
|
170 (uintptr_t) &ngx_http_variable_null_value)
|
|
|
171 == NGX_ERROR)
|
|
34
|
172 {
|
|
|
173 return NGX_CONF_ERROR;
|
|
|
174 }
|
|
|
175
|
|
|
176 return rv;
|
|
|
177 }
|
|
|
178
|
|
|
179
|
|
|
180 /* AF_INET only */
|
|
|
181
|
|
38
|
182 static char *
|
|
|
183 ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
|
|
34
|
184 {
|
|
122
|
185 ngx_int_t rc;
|
|
102
|
186 ngx_str_t *value, file;
|
|
34
|
187 ngx_uint_t i;
|
|
|
188 ngx_inet_cidr_t cidrin;
|
|
|
189 ngx_http_geo_conf_t *geo;
|
|
102
|
190 ngx_http_variable_value_t *var, *old, **v;
|
|
34
|
191
|
|
|
192 geo = cf->ctx;
|
|
|
193
|
|
|
194 if (cf->args->nelts != 2) {
|
|
|
195 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
196 "invalid number of the geo parameters");
|
|
|
197 return NGX_CONF_ERROR;
|
|
|
198 }
|
|
|
199
|
|
|
200 value = cf->args->elts;
|
|
|
201
|
|
|
202 if (ngx_strcmp(value[0].data, "include") == 0) {
|
|
|
203 file = value[1];
|
|
|
204
|
|
|
205 if (ngx_conf_full_name(cf->cycle, &file) == NGX_ERROR){
|
|
|
206 return NGX_CONF_ERROR;
|
|
|
207 }
|
|
|
208
|
|
|
209 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data);
|
|
|
210
|
|
|
211 return ngx_conf_parse(cf, &file);
|
|
|
212 }
|
|
|
213
|
|
|
214 if (ngx_strcmp(value[0].data, "default") == 0) {
|
|
|
215 cidrin.addr = 0;
|
|
|
216 cidrin.mask = 0;
|
|
|
217
|
|
|
218 } else {
|
|
|
219 if (ngx_ptocidr(&value[0], &cidrin) == NGX_ERROR) {
|
|
|
220 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
221 "invalid parameter \"%V\"", &value[0]);
|
|
|
222 return NGX_CONF_ERROR;
|
|
|
223 }
|
|
|
224
|
|
|
225 cidrin.addr = ntohl(cidrin.addr);
|
|
|
226 cidrin.mask = ntohl(cidrin.mask);
|
|
|
227 }
|
|
|
228
|
|
|
229 var = NULL;
|
|
|
230 v = geo->values.elts;
|
|
|
231
|
|
122
|
232 for (i = 0; i < geo->values.nelts; i++) {
|
|
|
233 if ((size_t) v[i]->len != value[1].len) {
|
|
|
234 continue;
|
|
34
|
235 }
|
|
|
236
|
|
122
|
237 if (ngx_strncmp(value[1].data, v[i]->data, value[1].len) == 0)
|
|
|
238 {
|
|
|
239 var = v[i];
|
|
|
240 break;
|
|
34
|
241 }
|
|
|
242 }
|
|
|
243
|
|
50
|
244 if (var == NULL) {
|
|
34
|
245 var = ngx_palloc(geo->pool, sizeof(ngx_http_variable_value_t));
|
|
|
246 if (var == NULL) {
|
|
|
247 return NGX_CONF_ERROR;
|
|
|
248 }
|
|
|
249
|
|
122
|
250 var->len = value[1].len;
|
|
|
251 var->data = ngx_pstrdup(geo->pool, &value[1]);
|
|
|
252 if (var->data == NULL) {
|
|
34
|
253 return NGX_CONF_ERROR;
|
|
|
254 }
|
|
|
255
|
|
122
|
256 var->valid = 1;
|
|
|
257 var->no_cachable = 0;
|
|
|
258 var->not_found = 0;
|
|
34
|
259
|
|
50
|
260 v = ngx_array_push(&geo->values);
|
|
|
261 if (v == NULL) {
|
|
34
|
262 return NGX_CONF_ERROR;
|
|
|
263 }
|
|
|
264
|
|
|
265 *v = var;
|
|
|
266 }
|
|
|
267
|
|
102
|
268 for (i = 2; i; i--) {
|
|
|
269 rc = ngx_radix32tree_insert(geo->tree, cidrin.addr, cidrin.mask,
|
|
|
270 (uintptr_t) var);
|
|
|
271 if (rc == NGX_OK) {
|
|
|
272 return NGX_CONF_OK;
|
|
|
273 }
|
|
|
274
|
|
|
275 if (rc == NGX_ERROR) {
|
|
|
276 return NGX_CONF_ERROR;
|
|
|
277 }
|
|
|
278
|
|
|
279 /* rc == NGX_BUSY */
|
|
|
280
|
|
|
281 old = (ngx_http_variable_value_t *)
|
|
|
282 ngx_radix32tree_find(geo->tree, cidrin.addr & cidrin.mask);
|
|
|
283
|
|
|
284 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
285 "duplicate parameter \"%V\", value: \"%V\", "
|
|
|
286 "old value: \"%V\"",
|
|
122
|
287 &value[0], var, old);
|
|
102
|
288
|
|
|
289 rc = ngx_radix32tree_delete(geo->tree, cidrin.addr, cidrin.mask);
|
|
|
290
|
|
|
291 if (rc == NGX_ERROR) {
|
|
|
292 return NGX_CONF_ERROR;
|
|
|
293 }
|
|
34
|
294 }
|
|
|
295
|
|
102
|
296 return NGX_CONF_ERROR;
|
|
34
|
297 }
|
