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