|
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 static ngx_http_variable_value_t ngx_http_geo_null_value =
|
|
|
68 { 0, ngx_string("0") };
|
|
|
69
|
|
|
70
|
|
|
71 /* AF_INET only */
|
|
|
72
|
|
38
|
73 static ngx_http_variable_value_t *
|
|
50
|
74 ngx_http_geo_variable(ngx_http_request_t *r, uintptr_t data)
|
|
34
|
75 {
|
|
50
|
76 ngx_radix_tree_t *tree = (ngx_radix_tree_t *) data;
|
|
34
|
77
|
|
38
|
78 struct sockaddr_in *sin;
|
|
|
79 ngx_http_variable_value_t *var;
|
|
34
|
80
|
|
|
81 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
|
82
|
|
38
|
83 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
84 "http geo started");
|
|
|
85
|
|
|
86 var = (ngx_http_variable_value_t *)
|
|
34
|
87 ngx_radix32tree_find(tree, ntohl(sin->sin_addr.s_addr));
|
|
38
|
88
|
|
|
89 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
90 "http geo: %V %V", &r->connection->addr_text, &var->text);
|
|
|
91
|
|
|
92 return var;
|
|
34
|
93 }
|
|
|
94
|
|
|
95
|
|
38
|
96 static char *
|
|
|
97 ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
34
|
98 {
|
|
|
99 char *rv;
|
|
50
|
100 ngx_str_t *value, name;
|
|
34
|
101 ngx_conf_t save;
|
|
|
102 ngx_pool_t *pool;
|
|
|
103 ngx_radix_tree_t *tree;
|
|
|
104 ngx_http_geo_conf_t geo;
|
|
|
105 ngx_http_variable_t *var;
|
|
|
106
|
|
50
|
107 value = cf->args->elts;
|
|
|
108
|
|
|
109 name = value[1];
|
|
|
110
|
|
|
111 if (name.data[0] != '$') {
|
|
|
112 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
|
113 "\"%V\" variable name should start with '$'",
|
|
|
114 &value[1]);
|
|
|
115 } else {
|
|
|
116 name.len--;
|
|
|
117 name.data++;
|
|
|
118 }
|
|
|
119
|
|
58
|
120 var = ngx_http_add_variable(cf, &name, 0);
|
|
50
|
121 if (var == NULL) {
|
|
34
|
122 return NGX_CONF_ERROR;
|
|
|
123 }
|
|
|
124
|
|
50
|
125 tree = ngx_radix_tree_create(cf->pool, -1);
|
|
|
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,
|
|
|
170 (uintptr_t) &ngx_http_geo_null_value) == NGX_ERROR)
|
|
|
171 {
|
|
|
172 return NGX_CONF_ERROR;
|
|
|
173 }
|
|
|
174
|
|
|
175 return rv;
|
|
|
176 }
|
|
|
177
|
|
|
178
|
|
|
179 /* AF_INET only */
|
|
|
180
|
|
38
|
181 static char *
|
|
|
182 ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
|
|
34
|
183 {
|
|
|
184 ngx_int_t rc, n;
|
|
|
185 ngx_uint_t i;
|
|
|
186 ngx_str_t *value, file;
|
|
|
187 ngx_inet_cidr_t cidrin;
|
|
|
188 ngx_http_geo_conf_t *geo;
|
|
|
189 ngx_http_variable_value_t *var, **v;
|
|
|
190
|
|
|
191 geo = cf->ctx;
|
|
|
192
|
|
|
193 if (cf->args->nelts != 2) {
|
|
|
194 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
195 "invalid number of the geo parameters");
|
|
|
196 return NGX_CONF_ERROR;
|
|
|
197 }
|
|
|
198
|
|
|
199 value = cf->args->elts;
|
|
|
200
|
|
|
201 if (ngx_strcmp(value[0].data, "include") == 0) {
|
|
|
202 file = value[1];
|
|
|
203
|
|
|
204 if (ngx_conf_full_name(cf->cycle, &file) == NGX_ERROR){
|
|
|
205 return NGX_CONF_ERROR;
|
|
|
206 }
|
|
|
207
|
|
|
208 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data);
|
|
|
209
|
|
|
210 return ngx_conf_parse(cf, &file);
|
|
|
211 }
|
|
|
212
|
|
|
213 if (ngx_strcmp(value[0].data, "default") == 0) {
|
|
|
214 cidrin.addr = 0;
|
|
|
215 cidrin.mask = 0;
|
|
|
216
|
|
|
217 } else {
|
|
|
218 if (ngx_ptocidr(&value[0], &cidrin) == NGX_ERROR) {
|
|
|
219 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
220 "invalid parameter \"%V\"", &value[0]);
|
|
|
221 return NGX_CONF_ERROR;
|
|
|
222 }
|
|
|
223
|
|
|
224 cidrin.addr = ntohl(cidrin.addr);
|
|
|
225 cidrin.mask = ntohl(cidrin.mask);
|
|
|
226 }
|
|
|
227
|
|
|
228 n = ngx_atoi(value[1].data, value[1].len);
|
|
|
229
|
|
|
230 var = NULL;
|
|
|
231 v = geo->values.elts;
|
|
|
232
|
|
|
233 if (n == NGX_ERROR) {
|
|
|
234 for (i = 0; i < geo->values.nelts; i++) {
|
|
50
|
235 if (v[i]->text.len != value[1].len) {
|
|
|
236 continue;
|
|
|
237 }
|
|
|
238
|
|
|
239 if (ngx_strncmp(value[1].data, v[i]->text.data, value[1].len) == 0)
|
|
|
240 {
|
|
34
|
241 var = v[i];
|
|
|
242 break;
|
|
|
243 }
|
|
|
244 }
|
|
|
245
|
|
|
246 } else {
|
|
|
247 for (i = 0; i < geo->values.nelts; i++) {
|
|
|
248 if (v[i]->value == (ngx_uint_t) n) {
|
|
|
249 var = v[i];
|
|
|
250 break;
|
|
|
251 }
|
|
|
252 }
|
|
|
253 }
|
|
|
254
|
|
50
|
255 if (var == NULL) {
|
|
34
|
256 var = ngx_palloc(geo->pool, sizeof(ngx_http_variable_value_t));
|
|
|
257 if (var == NULL) {
|
|
|
258 return NGX_CONF_ERROR;
|
|
|
259 }
|
|
|
260
|
|
|
261 var->text.len = value[1].len;
|
|
50
|
262 var->text.data = ngx_pstrdup(geo->pool, &value[1]);
|
|
|
263 if (var->text.data == NULL) {
|
|
34
|
264 return NGX_CONF_ERROR;
|
|
|
265 }
|
|
|
266
|
|
|
267 var->value = (n == NGX_ERROR) ? 0 : n;
|
|
|
268
|
|
50
|
269 v = ngx_array_push(&geo->values);
|
|
|
270 if (v == NULL) {
|
|
34
|
271 return NGX_CONF_ERROR;
|
|
|
272 }
|
|
|
273
|
|
|
274 *v = var;
|
|
|
275 }
|
|
|
276
|
|
|
277 rc = ngx_radix32tree_insert(geo->tree, cidrin.addr, cidrin.mask,
|
|
|
278 (uintptr_t) var);
|
|
|
279 if (rc == NGX_ERROR) {
|
|
|
280 return NGX_CONF_ERROR;
|
|
|
281 }
|
|
|
282
|
|
|
283 if (rc == NGX_BUSY) {
|
|
|
284 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "duplicate parameter \"%V\"",
|
|
|
285 &value[0]);
|
|
|
286 return NGX_CONF_ERROR;
|
|
|
287 }
|
|
|
288
|
|
|
289 return NGX_CONF_OK;
|
|
|
290 }
|
