Mercurial > hg > nginx
annotate src/http/modules/ngx_http_geo_module.c @ 2450:19b28be544fe
fix range deletion
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 16 Jan 2009 16:02:30 +0000 |
parents | 450a277dad48 |
children | b70e7f34d92b |
rev | line source |
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485 | 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 { | |
2399 | 13 u_short start; |
14 u_short end; | |
15 ngx_http_variable_value_t *value; | |
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16 } ngx_http_geo_range_t; |
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17 |
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18 |
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19 typedef struct { |
2399 | 20 ngx_http_geo_range_t *ranges; |
21 ngx_uint_t n; | |
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22 } ngx_http_geo_low_ranges_t; |
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23 |
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24 |
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25 typedef struct { |
2399 | 26 ngx_http_geo_low_ranges_t low[0x10000]; |
27 ngx_http_variable_value_t *default_value; | |
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28 } ngx_http_geo_high_ranges_t; |
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29 |
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30 |
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31 typedef struct { |
2399 | 32 ngx_http_variable_value_t *value; |
33 ngx_str_t *net; | |
34 ngx_http_geo_high_ranges_t *high; | |
35 ngx_radix_tree_t *tree; | |
36 ngx_rbtree_t rbtree; | |
37 ngx_rbtree_node_t sentinel; | |
38 ngx_pool_t *pool; | |
39 ngx_pool_t *temp_pool; | |
589 | 40 } ngx_http_geo_conf_ctx_t; |
485 | 41 |
42 | |
2399 | 43 typedef struct { |
44 union { | |
45 ngx_radix_tree_t *tree; | |
46 ngx_http_geo_high_ranges_t *high; | |
47 } u; | |
48 | |
49 ngx_int_t index; | |
50 } ngx_http_geo_ctx_t; | |
51 | |
52 | |
53 static in_addr_t ngx_http_geo_addr(ngx_http_request_t *r, | |
54 ngx_http_geo_ctx_t *ctx); | |
485 | 55 static char *ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
56 static char *ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf); | |
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57 static char *ngx_http_geo_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
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58 ngx_str_t *value); |
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59 static char *ngx_http_geo_add_range(ngx_conf_t *cf, |
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60 ngx_http_geo_conf_ctx_t *ctx, in_addr_t start, in_addr_t end); |
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61 static ngx_uint_t ngx_http_geo_delete_range(ngx_conf_t *cf, |
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62 ngx_http_geo_conf_ctx_t *ctx, in_addr_t start, in_addr_t end); |
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63 static char *ngx_http_geo_cidr(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
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64 ngx_str_t *value); |
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65 static ngx_http_variable_value_t *ngx_http_geo_value(ngx_conf_t *cf, |
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66 ngx_http_geo_conf_ctx_t *ctx, ngx_str_t *value); |
485 | 67 |
68 | |
69 static ngx_command_t ngx_http_geo_commands[] = { | |
70 | |
71 { ngx_string("geo"), | |
2399 | 72 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE12, |
485 | 73 ngx_http_geo_block, |
74 NGX_HTTP_MAIN_CONF_OFFSET, | |
75 0, | |
76 NULL }, | |
77 | |
78 ngx_null_command | |
79 }; | |
80 | |
81 | |
82 static ngx_http_module_t ngx_http_geo_module_ctx = { | |
509 | 83 NULL, /* preconfiguration */ |
84 NULL, /* postconfiguration */ | |
485 | 85 |
86 NULL, /* create main configuration */ | |
87 NULL, /* init main configuration */ | |
88 | |
89 NULL, /* create server configuration */ | |
90 NULL, /* merge server configuration */ | |
91 | |
92 NULL, /* create location configuration */ | |
93 NULL /* merge location configuration */ | |
94 }; | |
95 | |
96 | |
97 ngx_module_t ngx_http_geo_module = { | |
509 | 98 NGX_MODULE_V1, |
485 | 99 &ngx_http_geo_module_ctx, /* module context */ |
100 ngx_http_geo_commands, /* module directives */ | |
101 NGX_HTTP_MODULE, /* module type */ | |
541 | 102 NULL, /* init master */ |
485 | 103 NULL, /* init module */ |
541 | 104 NULL, /* init process */ |
105 NULL, /* init thread */ | |
106 NULL, /* exit thread */ | |
107 NULL, /* exit process */ | |
108 NULL, /* exit master */ | |
109 NGX_MODULE_V1_PADDING | |
485 | 110 }; |
111 | |
112 | |
113 /* AF_INET only */ | |
114 | |
573 | 115 static ngx_int_t |
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116 ngx_http_geo_cidr_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
573 | 117 uintptr_t data) |
485 | 118 { |
2399 | 119 ngx_http_geo_ctx_t *ctx = (ngx_http_geo_ctx_t *) data; |
485 | 120 |
573 | 121 ngx_http_variable_value_t *vv; |
485 | 122 |
573 | 123 vv = (ngx_http_variable_value_t *) |
2399 | 124 ngx_radix32tree_find(ctx->u.tree, ngx_http_geo_addr(r, ctx)); |
489 | 125 |
573 | 126 *v = *vv; |
127 | |
2399 | 128 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
129 "http geo: %v", v); | |
489 | 130 |
573 | 131 return NGX_OK; |
485 | 132 } |
133 | |
134 | |
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135 static ngx_int_t |
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136 ngx_http_geo_range_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
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137 uintptr_t data) |
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138 { |
2399 | 139 ngx_http_geo_ctx_t *ctx = (ngx_http_geo_ctx_t *) data; |
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140 |
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141 in_addr_t addr; |
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142 ngx_uint_t i, n; |
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143 ngx_http_geo_range_t *range; |
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144 |
2399 | 145 *v = *ctx->u.high->default_value; |
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146 |
2399 | 147 addr = ngx_http_geo_addr(r, ctx); |
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148 |
2399 | 149 range = ctx->u.high->low[addr >> 16].ranges; |
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150 |
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151 n = addr & 0xffff; |
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152 |
2399 | 153 for (i = 0; i < ctx->u.high->low[addr >> 16].n; i++) { |
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154 if (n >= (ngx_uint_t) range[i].start |
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155 && n <= (ngx_uint_t) range[i].end) |
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156 { |
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157 *v = *range[i].value; |
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158 } |
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159 } |
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160 |
2399 | 161 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
162 "http geo: %v", v); | |
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163 |
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164 return NGX_OK; |
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165 } |
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166 |
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167 |
2399 | 168 static in_addr_t |
169 ngx_http_geo_addr(ngx_http_request_t *r, ngx_http_geo_ctx_t *ctx) | |
170 { | |
171 struct sockaddr_in *sin; | |
172 ngx_http_variable_value_t *v; | |
173 | |
174 if (ctx->index == -1) { | |
175 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
176 "http geo started: %V", &r->connection->addr_text); | |
177 | |
178 sin = (struct sockaddr_in *) r->connection->sockaddr; | |
179 return ntohl(sin->sin_addr.s_addr); | |
180 } | |
181 | |
182 v = ngx_http_get_flushed_variable(r, ctx->index); | |
183 | |
184 if (v == NULL || v->not_found) { | |
185 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
186 "http geo not found"); | |
187 | |
188 return 0; | |
189 } | |
190 | |
191 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
192 "http geo started: %v", v); | |
193 | |
194 return ntohl(ngx_inet_addr(v->data, v->len)); | |
195 } | |
196 | |
197 | |
489 | 198 static char * |
199 ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
485 | 200 { |
589 | 201 char *rv; |
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202 size_t len; |
2399 | 203 ngx_str_t *value, name; |
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204 ngx_uint_t i; |
589 | 205 ngx_conf_t save; |
206 ngx_pool_t *pool; | |
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207 ngx_array_t *a; |
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208 ngx_http_variable_t *var; |
2399 | 209 ngx_http_geo_ctx_t *geo; |
589 | 210 ngx_http_geo_conf_ctx_t ctx; |
485 | 211 |
501 | 212 value = cf->args->elts; |
213 | |
2399 | 214 geo = ngx_palloc(cf->pool, sizeof(ngx_http_geo_ctx_t)); |
215 if (geo == NULL) { | |
216 return NGX_CONF_ERROR; | |
217 } | |
218 | |
219 name = value[1]; | |
220 name.len--; | |
221 name.data++; | |
222 | |
223 if (cf->args->nelts == 3) { | |
224 | |
225 geo->index = ngx_http_get_variable_index(cf, &name); | |
226 if (geo->index == NGX_ERROR) { | |
227 return NGX_CONF_ERROR; | |
228 } | |
229 | |
230 name = value[2]; | |
231 name.len--; | |
232 name.data++; | |
233 | |
234 } else { | |
235 geo->index = -1; | |
236 } | |
237 | |
238 var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGEABLE); | |
501 | 239 if (var == NULL) { |
485 | 240 return NGX_CONF_ERROR; |
241 } | |
242 | |
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243 pool = ngx_create_pool(16384, cf->log); |
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244 if (pool == NULL) { |
485 | 245 return NGX_CONF_ERROR; |
246 } | |
247 | |
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248 ctx.temp_pool = ngx_create_pool(16384, cf->log); |
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249 if (ctx.temp_pool == NULL) { |
485 | 250 return NGX_CONF_ERROR; |
251 } | |
252 | |
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253 ngx_rbtree_init(&ctx.rbtree, &ctx.sentinel, |
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254 ngx_http_variable_value_rbtree_insert); |
485 | 255 |
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256 ctx.high = NULL; |
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257 ctx.tree = NULL; |
589 | 258 ctx.pool = cf->pool; |
485 | 259 |
260 save = *cf; | |
261 cf->pool = pool; | |
589 | 262 cf->ctx = &ctx; |
485 | 263 cf->handler = ngx_http_geo; |
264 cf->handler_conf = conf; | |
265 | |
266 rv = ngx_conf_parse(cf, NULL); | |
267 | |
268 *cf = save; | |
269 | |
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270 if (ctx.high) { |
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271 |
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272 for (i = 0; i < 0x10000; i++) { |
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273 a = (ngx_array_t *) ctx.high->low[i].ranges; |
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274 |
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275 if (a == NULL || a->nelts == 0) { |
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276 continue; |
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277 } |
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278 |
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279 ctx.high->low[i].n = a->nelts; |
485 | 280 |
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281 len = a->nelts * sizeof(ngx_http_geo_range_t); |
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282 |
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283 ctx.high->low[i].ranges = ngx_palloc(cf->pool, len); |
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284 if (ctx.high->low[i].ranges == NULL ){ |
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285 return NGX_CONF_ERROR; |
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286 } |
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287 |
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288 ngx_memcpy(ctx.high->low[i].ranges, a->elts, len); |
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289 } |
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290 |
2399 | 291 geo->u.high = ctx.high; |
292 | |
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293 var->get_handler = ngx_http_geo_range_variable; |
2399 | 294 var->data = (uintptr_t) geo; |
485 | 295 |
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296 ngx_destroy_pool(ctx.temp_pool); |
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297 ngx_destroy_pool(pool); |
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298 |
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299 if (ctx.high->default_value == NULL) { |
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300 ctx.high->default_value = &ngx_http_variable_null_value; |
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301 } |
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302 |
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303 } else { |
2358
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304 if (ctx.tree == NULL) { |
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305 ctx.tree = ngx_radix_tree_create(cf->pool, -1); |
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306 if (ctx.tree == NULL) { |
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307 return NGX_CONF_ERROR; |
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308 } |
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309 } |
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310 |
2399 | 311 geo->u.tree = ctx.tree; |
312 | |
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313 var->get_handler = ngx_http_geo_cidr_variable; |
2399 | 314 var->data = (uintptr_t) geo; |
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315 |
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316 ngx_destroy_pool(ctx.temp_pool); |
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317 ngx_destroy_pool(pool); |
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318 |
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319 if (ngx_radix32tree_find(ctx.tree, 0) != NGX_RADIX_NO_VALUE) { |
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320 return rv; |
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321 } |
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322 |
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323 if (ngx_radix32tree_insert(ctx.tree, 0, 0, |
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324 (uintptr_t) &ngx_http_variable_null_value) |
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325 == NGX_ERROR) |
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326 { |
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327 return NGX_CONF_ERROR; |
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328 } |
485 | 329 } |
330 | |
331 return rv; | |
332 } | |
333 | |
334 | |
489 | 335 static char * |
336 ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) | |
485 | 337 { |
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338 char *rv; |
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339 ngx_str_t *value, file; |
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340 ngx_http_geo_conf_ctx_t *ctx; |
485 | 341 |
589 | 342 ctx = cf->ctx; |
485 | 343 |
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344 value = cf->args->elts; |
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345 |
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346 if (cf->args->nelts == 1) { |
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347 |
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348 if (ngx_strcmp(value[0].data, "ranges") == 0) { |
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349 |
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350 if (ctx->tree) { |
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351 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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352 "the \"ranges\" directive must be " |
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353 "the first directive inside \"geo\" block"); |
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354 goto failed; |
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355 } |
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356 |
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357 ctx->high = ngx_pcalloc(ctx->pool, |
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358 sizeof(ngx_http_geo_high_ranges_t)); |
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359 if (ctx->high == NULL) { |
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360 goto failed; |
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361 } |
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362 |
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363 rv = NGX_CONF_OK; |
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364 |
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365 goto done; |
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366 } |
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367 } |
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368 |
485 | 369 if (cf->args->nelts != 2) { |
370 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
371 "invalid number of the geo parameters"); | |
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372 goto failed; |
485 | 373 } |
374 | |
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375 if (ngx_strcmp(value[0].data, "include") == 0) { |
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376 |
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377 file.len = value[1].len++; |
485 | 378 |
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379 file.data = ngx_pstrdup(ctx->temp_pool, &value[1]); |
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380 if (file.data == NULL) { |
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381 goto failed; |
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382 } |
485 | 383 |
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384 if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK){ |
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385 goto failed; |
485 | 386 } |
387 | |
388 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); | |
389 | |
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390 rv = ngx_conf_parse(cf, &file); |
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391 |
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392 goto done; |
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393 } |
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394 |
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395 if (ctx->high) { |
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396 rv = ngx_http_geo_range(cf, ctx, value); |
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397 |
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398 } else { |
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399 rv = ngx_http_geo_cidr(cf, ctx, value); |
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400 } |
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401 |
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402 done: |
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403 |
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404 ngx_reset_pool(cf->pool); |
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405 |
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406 return rv; |
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407 |
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408 failed: |
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409 |
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410 ngx_reset_pool(cf->pool); |
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411 |
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412 return NGX_CONF_ERROR; |
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413 } |
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414 |
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415 |
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416 static char * |
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417 ngx_http_geo_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
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418 ngx_str_t *value) |
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419 { |
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420 u_char *p, *last; |
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421 in_addr_t start, end; |
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422 ngx_str_t *net; |
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423 ngx_uint_t del; |
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424 ngx_http_variable_value_t *old; |
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425 |
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426 if (ngx_strcmp(value[0].data, "default") == 0) { |
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427 |
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428 old = ctx->high->default_value; |
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429 |
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430 ctx->high->default_value = ngx_http_geo_value(cf, ctx, &value[1]); |
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431 if (ctx->high->default_value == NULL) { |
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432 return NGX_CONF_ERROR; |
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433 } |
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434 |
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435 if (old) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
436 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
437 "duplicate range \"%V\", value: \"%v\", old value: \"%v\"", |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
438 &value[0], ctx->high->default_value, old); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
439 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
440 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
441 return NGX_CONF_OK; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
442 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
443 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
444 if (ngx_strcmp(value[0].data, "delete") == 0) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
445 net = &value[1]; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
446 del = 1; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
447 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
448 } else { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
449 net = &value[0]; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
450 del = 0; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
451 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
452 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
453 last = net->data + net->len; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
454 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
455 p = ngx_strlchr(net->data, last, '-'); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
456 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
457 if (p == NULL) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
458 goto invalid; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
459 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
460 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
461 start = ngx_inet_addr(net->data, p - net->data); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
462 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
463 if (start == INADDR_NONE) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
464 goto invalid; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
465 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
466 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
467 start = ntohl(start); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
468 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
469 p++; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
470 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
471 end = ngx_inet_addr(p, last - p); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
472 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
473 if (end == INADDR_NONE) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
474 goto invalid; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
475 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
476 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
477 end = ntohl(end); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
478 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
479 if (start > end) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
480 goto invalid; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
481 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
482 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
483 if (del) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
484 if (ngx_http_geo_delete_range(cf, ctx, start, end)) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
485 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
486 "no address range \"%V\" to delete", net); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
487 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
488 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
489 return NGX_CONF_OK; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
490 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
491 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
492 ctx->value = ngx_http_geo_value(cf, ctx, &value[1]); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
493 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
494 if (ctx->value == NULL) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
495 return NGX_CONF_ERROR; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
496 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
497 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
498 ctx->net = net; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
499 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
500 return ngx_http_geo_add_range(cf, ctx, start, end); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
501 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
502 invalid: |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
503 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
504 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid range \"%V\"", net); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
505 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
506 return NGX_CONF_ERROR; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
507 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
508 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
509 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
510 /* the add procedure is optimized to add a growing up sequence */ |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
511 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
512 static char * |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
513 ngx_http_geo_add_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
514 in_addr_t start, in_addr_t end) |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
515 { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
516 in_addr_t n; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
517 ngx_uint_t h, i, s, e; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
518 ngx_array_t *a; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
519 ngx_http_geo_range_t *range; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
520 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
521 for (n = start; n < end; n += 0x10000) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
522 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
523 h = n >> 16; |
2447
3d868fc44879
fix range start for ranges those spread in two or more slots
Igor Sysoev <igor@sysoev.ru>
parents:
2442
diff
changeset
|
524 |
3d868fc44879
fix range start for ranges those spread in two or more slots
Igor Sysoev <igor@sysoev.ru>
parents:
2442
diff
changeset
|
525 if (n == start) { |
3d868fc44879
fix range start for ranges those spread in two or more slots
Igor Sysoev <igor@sysoev.ru>
parents:
2442
diff
changeset
|
526 s = n & 0xffff; |
3d868fc44879
fix range start for ranges those spread in two or more slots
Igor Sysoev <igor@sysoev.ru>
parents:
2442
diff
changeset
|
527 } else { |
3d868fc44879
fix range start for ranges those spread in two or more slots
Igor Sysoev <igor@sysoev.ru>
parents:
2442
diff
changeset
|
528 s = 0; |
3d868fc44879
fix range start for ranges those spread in two or more slots
Igor Sysoev <igor@sysoev.ru>
parents:
2442
diff
changeset
|
529 } |
2340
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
530 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
531 if ((n | 0xffff) > end) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
532 e = end & 0xffff; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
533 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
534 } else { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
535 e = 0xffff; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
536 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
537 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
538 a = (ngx_array_t *) ctx->high->low[h].ranges; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
539 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
540 if (a == NULL) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
541 a = ngx_array_create(ctx->temp_pool, 64, |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
542 sizeof(ngx_http_geo_range_t)); |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
543 if (a == NULL) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
544 return NGX_CONF_ERROR; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
545 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
546 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
547 ctx->high->low[h].ranges = (ngx_http_geo_range_t *) a; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
548 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
549 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
550 i = a->nelts; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
551 range = a->elts; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
552 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
553 while (i) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
554 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
555 i--; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
556 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
557 if (e < (ngx_uint_t) range[i].start) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
558 continue; |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
559 } |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
560 |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
561 if (s > (ngx_uint_t) range[i].end) { |
22d2b6609853
*) descrease geo configuration memory usage
Igor Sysoev <igor@sysoev.ru>
parents:
2334
diff
changeset
|
562 |
22d2b6609853
*) descrease geo configuration memory usage
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563 /* add after the range */ |
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|
564 |
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565 range = ngx_array_push(a); |
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566 if (range == NULL) { |
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567 return NGX_CONF_ERROR; |
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|
568 } |
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|
569 |
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570 range = a->elts; |
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571 |
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572 ngx_memcpy(&range[i + 2], &range[i + 1], |
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573 (a->nelts - 2 - i) * sizeof(ngx_http_geo_range_t)); |
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574 |
2442 | 575 range[i + 1].start = (u_short) s; |
576 range[i + 1].end = (u_short) e; | |
577 range[i + 1].value = ctx->value; | |
2340
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578 |
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|
579 goto next; |
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|
580 } |
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|
581 |
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|
582 if (s == (ngx_uint_t) range[i].start |
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583 && e == (ngx_uint_t) range[i].end) |
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|
584 { |
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585 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
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586 "duplicate range \"%V\", value: \"%v\", old value: \"%v\"", |
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587 ctx->net, ctx->value, range[i].value); |
2442 | 588 |
589 range[i].value = ctx->value; | |
590 | |
591 goto next; | |
592 } | |
593 | |
594 if (s > (ngx_uint_t) range[i].start | |
595 && e < (ngx_uint_t) range[i].end) | |
596 { | |
597 /* split the range and insert the new one */ | |
598 | |
599 range = ngx_array_push(a); | |
600 if (range == NULL) { | |
601 return NGX_CONF_ERROR; | |
602 } | |
603 | |
604 range = ngx_array_push(a); | |
605 if (range == NULL) { | |
606 return NGX_CONF_ERROR; | |
607 } | |
608 | |
609 range = a->elts; | |
610 | |
611 ngx_memcpy(&range[i + 3], &range[i + 1], | |
612 (a->nelts - 3 - i) * sizeof(ngx_http_geo_range_t)); | |
613 | |
614 range[i + 2].start = (u_short) (e + 1); | |
615 range[i + 2].end = range[i].end; | |
616 range[i + 2].value = range[i].value; | |
617 | |
618 range[i].end = (u_short) (s - 1); | |
619 | |
620 range[i + 1].start = (u_short) s; | |
621 range[i + 1].end = (u_short) e; | |
622 range[i + 1].value = ctx->value; | |
623 | |
624 goto next; | |
2340
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|
625 } |
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|
626 |
2448 | 627 s = (ngx_uint_t) range[i].start; |
628 e = (ngx_uint_t) range[i].end; | |
629 | |
2340
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630 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
2448 | 631 "range \"%V\" overlaps \"%d.%d.%d.%d-%d.%d.%d.%d\"", |
632 ctx->net, | |
633 h >> 8, h & 0xff, s >> 8, s & 0xff, | |
634 h >> 8, h & 0xff, e >> 8, e & 0xff); | |
2340
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|
635 |
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636 return NGX_CONF_ERROR; |
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|
637 } |
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|
638 |
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|
639 /* add the first range */ |
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|
640 |
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|
641 range = ngx_array_push(a); |
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642 if (range == NULL) { |
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643 return NGX_CONF_ERROR; |
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|
644 } |
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|
645 |
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646 range->start = (u_short) s; |
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647 range->end = (u_short) e; |
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648 range->value = ctx->value; |
2442 | 649 |
650 next: | |
651 | |
652 continue; | |
2340
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|
653 } |
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654 |
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655 return NGX_CONF_OK; |
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|
656 } |
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|
657 |
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|
658 |
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659 static ngx_uint_t |
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660 ngx_http_geo_delete_range(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
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661 in_addr_t start, in_addr_t end) |
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662 { |
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663 in_addr_t n; |
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664 ngx_uint_t h, i, s, e, warn; |
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665 ngx_array_t *a; |
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666 ngx_http_geo_range_t *range; |
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|
667 |
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|
668 warn = 0; |
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|
669 |
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670 for (n = start; n < end; n += 0x10000) { |
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|
671 |
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672 h = n >> 16; |
2449
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diff
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|
673 |
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2448
diff
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|
674 if (n == start) { |
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2448
diff
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|
675 s = n & 0xffff; |
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diff
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|
676 } else { |
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2448
diff
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|
677 s = 0; |
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diff
changeset
|
678 } |
2340
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|
679 |
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|
680 if ((n | 0xffff) > end) { |
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681 e = end & 0xffff; |
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|
682 |
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|
683 } else { |
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|
684 e = 0xffff; |
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|
685 } |
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|
686 |
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687 a = (ngx_array_t *) ctx->high->low[h].ranges; |
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|
688 |
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|
689 if (a == NULL) { |
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|
690 warn = 1; |
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|
691 continue; |
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|
692 } |
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|
693 |
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|
694 range = a->elts; |
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|
695 for (i = 0; i < a->nelts; i++) { |
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|
696 |
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|
697 if (s == (ngx_uint_t) range[i].start |
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698 && e == (ngx_uint_t) range[i].end) |
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|
699 { |
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|
700 ngx_memcpy(&range[i], &range[i + 1], |
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|
701 (a->nelts - 1 - i) * sizeof(ngx_http_geo_range_t)); |
2450 | 702 |
703 a->nelts--; | |
704 | |
2340
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|
705 break; |
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|
706 } |
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changeset
|
707 |
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|
708 if (s != (ngx_uint_t) range[i].start |
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|
709 && e != (ngx_uint_t) range[i].end) |
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|
710 { |
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|
711 continue; |
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|
712 } |
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changeset
|
713 |
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|
714 warn = 1; |
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|
715 } |
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diff
changeset
|
716 } |
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diff
changeset
|
717 |
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|
718 return warn; |
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diff
changeset
|
719 } |
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diff
changeset
|
720 |
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diff
changeset
|
721 |
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|
722 static char * |
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|
723 ngx_http_geo_cidr(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
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|
724 ngx_str_t *value) |
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|
725 { |
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|
726 ngx_int_t rc, del; |
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|
727 ngx_str_t *net; |
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|
728 ngx_uint_t i; |
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diff
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|
729 ngx_inet_cidr_t cidrin; |
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|
730 ngx_http_variable_value_t *val, *old; |
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|
731 |
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732 if (ctx->tree == NULL) { |
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733 ctx->tree = ngx_radix_tree_create(ctx->pool, -1); |
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734 if (ctx->tree == NULL) { |
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735 return NGX_CONF_ERROR; |
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736 } |
485 | 737 } |
738 | |
739 if (ngx_strcmp(value[0].data, "default") == 0) { | |
740 cidrin.addr = 0; | |
741 cidrin.mask = 0; | |
2340
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742 net = &value[0]; |
485 | 743 |
744 } else { | |
2340
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745 if (ngx_strcmp(value[0].data, "delete") == 0) { |
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746 net = &value[1]; |
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747 del = 1; |
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748 |
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749 } else { |
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750 net = &value[0]; |
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751 del = 0; |
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752 } |
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753 |
2399 | 754 if (ngx_strcmp(net->data, "255.255.255.255") == 0) { |
755 cidrin.addr = 0xffffffff; | |
756 cidrin.mask = 0xffffffff; | |
1380
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757 |
2399 | 758 } else { |
2401 | 759 rc = ngx_ptocidr(net, &cidrin); |
485 | 760 |
2401 | 761 if (rc == NGX_ERROR) { |
762 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
763 "invalid network \"%V\"", net); | |
764 return NGX_CONF_ERROR; | |
765 } | |
2399 | 766 |
2401 | 767 if (rc == NGX_DONE) { |
768 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, | |
769 "low address bits of %V are meaningless", | |
2399 | 770 net); |
2401 | 771 } |
2399 | 772 |
2401 | 773 cidrin.addr = ntohl(cidrin.addr); |
774 cidrin.mask = ntohl(cidrin.mask); | |
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775 } |
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776 |
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777 if (del) { |
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778 if (ngx_radix32tree_delete(ctx->tree, cidrin.addr, cidrin.mask) |
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779 != NGX_OK) |
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780 { |
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781 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
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782 "no network \"%V\" to delete", net); |
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783 } |
2365 | 784 |
785 return NGX_CONF_OK; | |
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786 } |
485 | 787 } |
788 | |
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789 val = ngx_http_geo_value(cf, ctx, &value[1]); |
485 | 790 |
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791 if (val == NULL) { |
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792 return NGX_CONF_ERROR; |
485 | 793 } |
794 | |
553 | 795 for (i = 2; i; i--) { |
589 | 796 rc = ngx_radix32tree_insert(ctx->tree, cidrin.addr, cidrin.mask, |
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797 (uintptr_t) val); |
553 | 798 if (rc == NGX_OK) { |
799 return NGX_CONF_OK; | |
800 } | |
801 | |
802 if (rc == NGX_ERROR) { | |
803 return NGX_CONF_ERROR; | |
804 } | |
805 | |
806 /* rc == NGX_BUSY */ | |
807 | |
808 old = (ngx_http_variable_value_t *) | |
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809 ngx_radix32tree_find(ctx->tree, cidrin.addr & cidrin.mask); |
553 | 810 |
811 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, | |
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812 "duplicate network \"%V\", value: \"%v\", old value: \"%v\"", |
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813 net, val, old); |
553 | 814 |
589 | 815 rc = ngx_radix32tree_delete(ctx->tree, cidrin.addr, cidrin.mask); |
553 | 816 |
817 if (rc == NGX_ERROR) { | |
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818 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid radix tree"); |
553 | 819 return NGX_CONF_ERROR; |
820 } | |
485 | 821 } |
822 | |
553 | 823 return NGX_CONF_ERROR; |
485 | 824 } |
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825 |
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826 |
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827 static ngx_http_variable_value_t * |
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828 ngx_http_geo_value(ngx_conf_t *cf, ngx_http_geo_conf_ctx_t *ctx, |
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829 ngx_str_t *value) |
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830 { |
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831 uint32_t hash; |
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832 ngx_http_variable_value_t *val; |
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833 ngx_http_variable_value_node_t *vvn; |
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834 |
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835 hash = ngx_crc32_long(value->data, value->len); |
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836 |
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837 val = ngx_http_variable_value_lookup(&ctx->rbtree, value, hash); |
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838 |
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839 if (val) { |
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840 return val; |
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841 } |
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842 |
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843 val = ngx_palloc(ctx->pool, sizeof(ngx_http_variable_value_t)); |
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844 if (val == NULL) { |
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845 return NULL; |
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846 } |
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847 |
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848 val->len = value->len; |
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849 val->data = ngx_pstrdup(ctx->pool, value); |
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850 if (val->data == NULL) { |
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851 return NULL; |
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852 } |
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853 |
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854 val->valid = 1; |
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855 val->no_cacheable = 0; |
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856 val->not_found = 0; |
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857 |
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858 vvn = ngx_palloc(ctx->temp_pool, sizeof(ngx_http_variable_value_node_t)); |
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859 if (vvn == NULL) { |
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860 return NULL; |
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861 } |
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862 |
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863 vvn->node.key = hash; |
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864 vvn->len = val->len; |
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865 vvn->value = val; |
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866 |
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867 ngx_rbtree_insert(&ctx->rbtree, &vvn->node); |
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868 |
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869 return val; |
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870 } |