|
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 {
|
|
|
13 ngx_radix_tree_t *tree;
|
|
|
14 ngx_pool_t *pool;
|
|
|
15 ngx_array_t values;
|
|
|
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
|
|
|
66 static ngx_http_variable_value_t *ngx_http_geo_variable(ngx_http_request_t *r,
|
|
|
67 void *data)
|
|
|
68 {
|
|
|
69 ngx_radix_tree_t *tree = data;
|
|
|
70
|
|
|
71 struct sockaddr_in *sin;
|
|
|
72
|
|
|
73 sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
|
74
|
|
|
75 return (ngx_http_variable_value_t *)
|
|
|
76 ngx_radix32tree_find(tree, ntohl(sin->sin_addr.s_addr));
|
|
|
77 }
|
|
|
78
|
|
|
79
|
|
|
80 static char *ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
81 {
|
|
|
82 char *rv;
|
|
|
83 ngx_str_t *value;
|
|
|
84 ngx_conf_t save;
|
|
|
85 ngx_pool_t *pool;
|
|
|
86 ngx_radix_tree_t *tree;
|
|
|
87 ngx_http_geo_conf_t geo;
|
|
|
88 ngx_http_variable_t *var;
|
|
|
89
|
|
|
90 if (!(var = ngx_http_add_variable(cf))) {
|
|
|
91 return NGX_CONF_ERROR;
|
|
|
92 }
|
|
|
93
|
|
|
94 if (!(tree = ngx_radix_tree_create(cf->pool))) {
|
|
|
95 return NGX_CONF_ERROR;
|
|
|
96 }
|
|
|
97
|
|
|
98 value = cf->args->elts;
|
|
|
99
|
|
|
100 var->name = value[1];
|
|
|
101 var->handler = ngx_http_geo_variable;
|
|
|
102 var->data = tree;
|
|
|
103
|
|
|
104 /*
|
|
|
105 * create the temporary pool of a huge initial size
|
|
|
106 * to process quickly a large number of geo lines
|
|
|
107 */
|
|
|
108
|
|
|
109 if (!(pool = ngx_create_pool(512 * 1024, cf->log))) {
|
|
|
110 return NGX_CONF_ERROR;
|
|
|
111 }
|
|
|
112
|
|
|
113 if (ngx_array_init(&geo.values, pool, 512,
|
|
|
114 sizeof(ngx_http_variable_value_t *)) == NGX_ERROR)
|
|
|
115 {
|
|
|
116 ngx_destroy_pool(pool);
|
|
|
117 return NGX_CONF_ERROR;
|
|
|
118 }
|
|
|
119
|
|
|
120 geo.tree = tree;
|
|
|
121 geo.pool = cf->pool;
|
|
|
122
|
|
|
123 save = *cf;
|
|
|
124 cf->pool = pool;
|
|
|
125 cf->ctx = &geo;
|
|
|
126 cf->handler = ngx_http_geo;
|
|
|
127 cf->handler_conf = conf;
|
|
|
128
|
|
|
129 rv = ngx_conf_parse(cf, NULL);
|
|
|
130
|
|
|
131 *cf = save;
|
|
|
132
|
|
|
133 ngx_destroy_pool(pool);
|
|
|
134
|
|
|
135 if (ngx_radix32tree_find(tree, 0) != NGX_RADIX_NO_VALUE) {
|
|
|
136 return rv;
|
|
|
137 }
|
|
|
138
|
|
|
139 if (ngx_radix32tree_insert(tree, 0, 0,
|
|
|
140 (uintptr_t) &ngx_http_geo_null_value) == NGX_ERROR)
|
|
|
141 {
|
|
|
142 return NGX_CONF_ERROR;
|
|
|
143 }
|
|
|
144
|
|
|
145 return rv;
|
|
|
146 }
|
|
|
147
|
|
|
148
|
|
|
149 /* AF_INET only */
|
|
|
150
|
|
|
151 static char *ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
|
|
|
152 {
|
|
|
153 ngx_int_t rc, n;
|
|
|
154 ngx_uint_t i;
|
|
|
155 ngx_str_t *value, file;
|
|
|
156 ngx_inet_cidr_t cidrin;
|
|
|
157 ngx_http_geo_conf_t *geo;
|
|
|
158 ngx_http_variable_value_t *var, **v;
|
|
|
159
|
|
|
160 geo = cf->ctx;
|
|
|
161
|
|
|
162 if (cf->args->nelts != 2) {
|
|
|
163 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
164 "invalid number of the geo parameters");
|
|
|
165 return NGX_CONF_ERROR;
|
|
|
166 }
|
|
|
167
|
|
|
168 value = cf->args->elts;
|
|
|
169
|
|
|
170 if (ngx_strcmp(value[0].data, "include") == 0) {
|
|
|
171 file = value[1];
|
|
|
172
|
|
|
173 if (ngx_conf_full_name(cf->cycle, &file) == NGX_ERROR){
|
|
|
174 return NGX_CONF_ERROR;
|
|
|
175 }
|
|
|
176
|
|
|
177 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data);
|
|
|
178
|
|
|
179 return ngx_conf_parse(cf, &file);
|
|
|
180 }
|
|
|
181
|
|
|
182 if (ngx_strcmp(value[0].data, "default") == 0) {
|
|
|
183 cidrin.addr = 0;
|
|
|
184 cidrin.mask = 0;
|
|
|
185
|
|
|
186 } else {
|
|
|
187 if (ngx_ptocidr(&value[0], &cidrin) == NGX_ERROR) {
|
|
|
188 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
189 "invalid parameter \"%V\"", &value[0]);
|
|
|
190 return NGX_CONF_ERROR;
|
|
|
191 }
|
|
|
192
|
|
|
193 cidrin.addr = ntohl(cidrin.addr);
|
|
|
194 cidrin.mask = ntohl(cidrin.mask);
|
|
|
195 }
|
|
|
196
|
|
|
197 n = ngx_atoi(value[1].data, value[1].len);
|
|
|
198
|
|
|
199 var = NULL;
|
|
|
200 v = geo->values.elts;
|
|
|
201
|
|
|
202 if (n == NGX_ERROR) {
|
|
|
203 for (i = 0; i < geo->values.nelts; i++) {
|
|
|
204 if (ngx_strcmp(value[1].data, v[i]->text.data) == 0) {
|
|
|
205 var = v[i];
|
|
|
206 break;
|
|
|
207 }
|
|
|
208 }
|
|
|
209
|
|
|
210 } else {
|
|
|
211 for (i = 0; i < geo->values.nelts; i++) {
|
|
|
212 if (v[i]->value == (ngx_uint_t) n) {
|
|
|
213 var = v[i];
|
|
|
214 break;
|
|
|
215 }
|
|
|
216 }
|
|
|
217 }
|
|
|
218
|
|
|
219 if (i == geo->values.nelts) {
|
|
|
220 var = ngx_palloc(geo->pool, sizeof(ngx_http_variable_value_t));
|
|
|
221 if (var == NULL) {
|
|
|
222 return NGX_CONF_ERROR;
|
|
|
223 }
|
|
|
224
|
|
|
225 var->text.len = value[1].len;
|
|
|
226 if (!(var->text.data = ngx_pstrdup(geo->pool, &value[1]))) {
|
|
|
227 return NGX_CONF_ERROR;
|
|
|
228 }
|
|
|
229
|
|
|
230 var->value = (n == NGX_ERROR) ? 0 : n;
|
|
|
231
|
|
|
232 if (!(v = ngx_array_push(&geo->values))) {
|
|
|
233 return NGX_CONF_ERROR;
|
|
|
234 }
|
|
|
235
|
|
|
236 *v = var;
|
|
|
237 }
|
|
|
238
|
|
|
239 rc = ngx_radix32tree_insert(geo->tree, cidrin.addr, cidrin.mask,
|
|
|
240 (uintptr_t) var);
|
|
|
241 if (rc == NGX_ERROR) {
|
|
|
242 return NGX_CONF_ERROR;
|
|
|
243 }
|
|
|
244
|
|
|
245 if (rc == NGX_BUSY) {
|
|
|
246 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "duplicate parameter \"%V\"",
|
|
|
247 &value[0]);
|
|
|
248 return NGX_CONF_ERROR;
|
|
|
249 }
|
|
|
250
|
|
|
251 return NGX_CONF_OK;
|
|
|
252 }
|
