Mercurial > hg > nginx-vendor-0-8
view src/http/modules/ngx_http_geo_module.c @ 325:f395c7a4c8a8
Added tag NGINX_0_6_6 for changeset f7cd062ee035
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 30 Jul 2007 00:00:00 +0400 |
parents | f7cd062ee035 |
children | 9fc4ab6673f9 |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef struct { ngx_radix_tree_t *tree; ngx_pool_t *pool; ngx_array_t values; } ngx_http_geo_conf_ctx_t; static char *ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf); static ngx_command_t ngx_http_geo_commands[] = { { ngx_string("geo"), NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1, ngx_http_geo_block, NGX_HTTP_MAIN_CONF_OFFSET, 0, NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_geo_module_ctx = { NULL, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ NULL, /* create location configuration */ NULL /* merge location configuration */ }; ngx_module_t ngx_http_geo_module = { NGX_MODULE_V1, &ngx_http_geo_module_ctx, /* module context */ ngx_http_geo_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; /* AF_INET only */ static ngx_int_t ngx_http_geo_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_radix_tree_t *tree = (ngx_radix_tree_t *) data; struct sockaddr_in *sin; ngx_http_variable_value_t *vv; sin = (struct sockaddr_in *) r->connection->sockaddr; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http geo started"); vv = (ngx_http_variable_value_t *) ngx_radix32tree_find(tree, ntohl(sin->sin_addr.s_addr)); *v = *vv; ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http geo: %V %V", &r->connection->addr_text, v); return NGX_OK; } static char * ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *rv; ngx_str_t *value, name; ngx_conf_t save; ngx_pool_t *pool; ngx_radix_tree_t *tree; ngx_http_geo_conf_ctx_t ctx; ngx_http_variable_t *var; value = cf->args->elts; name = value[1]; if (name.data[0] != '$') { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "\"%V\" variable name should start with '$'", &value[1]); } else { name.len--; name.data++; } var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGABLE); if (var == NULL) { return NGX_CONF_ERROR; } tree = ngx_radix_tree_create(cf->pool, -1); if (tree == NULL) { return NGX_CONF_ERROR; } var->get_handler = ngx_http_geo_variable; var->data = (uintptr_t) tree; pool = ngx_create_pool(16384, cf->log); if (pool == NULL) { return NGX_CONF_ERROR; } if (ngx_array_init(&ctx.values, pool, 512, sizeof(ngx_http_variable_value_t *)) != NGX_OK) { ngx_destroy_pool(pool); return NGX_CONF_ERROR; } ctx.tree = tree; ctx.pool = cf->pool; save = *cf; cf->pool = pool; cf->ctx = &ctx; cf->handler = ngx_http_geo; cf->handler_conf = conf; rv = ngx_conf_parse(cf, NULL); *cf = save; ngx_destroy_pool(pool); if (ngx_radix32tree_find(tree, 0) != NGX_RADIX_NO_VALUE) { return rv; } if (ngx_radix32tree_insert(tree, 0, 0, (uintptr_t) &ngx_http_variable_null_value) == NGX_ERROR) { return NGX_CONF_ERROR; } return rv; } /* AF_INET only */ static char * ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) { ngx_int_t rc; ngx_str_t *value, file; ngx_uint_t i; ngx_inet_cidr_t cidrin; ngx_http_geo_conf_ctx_t *ctx; ngx_http_variable_value_t *var, *old, **v; ctx = cf->ctx; if (cf->args->nelts != 2) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid number of the geo parameters"); return NGX_CONF_ERROR; } value = cf->args->elts; if (ngx_strcmp(value[0].data, "include") == 0) { file = value[1]; if (ngx_conf_full_name(cf->cycle, &file, 1) == NGX_ERROR){ return NGX_CONF_ERROR; } ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); return ngx_conf_parse(cf, &file); } if (ngx_strcmp(value[0].data, "default") == 0) { cidrin.addr = 0; cidrin.mask = 0; } else { if (ngx_ptocidr(&value[0], &cidrin) == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[0]); return NGX_CONF_ERROR; } cidrin.addr = ntohl(cidrin.addr); cidrin.mask = ntohl(cidrin.mask); } var = NULL; v = ctx->values.elts; for (i = 0; i < ctx->values.nelts; i++) { if ((size_t) v[i]->len != value[1].len) { continue; } if (ngx_strncmp(value[1].data, v[i]->data, value[1].len) == 0) { var = v[i]; break; } } if (var == NULL) { var = ngx_palloc(ctx->pool, sizeof(ngx_http_variable_value_t)); if (var == NULL) { return NGX_CONF_ERROR; } var->len = value[1].len; var->data = ngx_pstrdup(ctx->pool, &value[1]); if (var->data == NULL) { return NGX_CONF_ERROR; } var->valid = 1; var->no_cachable = 0; var->not_found = 0; v = ngx_array_push(&ctx->values); if (v == NULL) { return NGX_CONF_ERROR; } *v = var; } for (i = 2; i; i--) { rc = ngx_radix32tree_insert(ctx->tree, cidrin.addr, cidrin.mask, (uintptr_t) var); if (rc == NGX_OK) { return NGX_CONF_OK; } if (rc == NGX_ERROR) { return NGX_CONF_ERROR; } /* rc == NGX_BUSY */ old = (ngx_http_variable_value_t *) ngx_radix32tree_find(ctx->tree, cidrin.addr & cidrin.mask); ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "duplicate parameter \"%V\", value: \"%V\", " "old value: \"%V\"", &value[0], var, old); rc = ngx_radix32tree_delete(ctx->tree, cidrin.addr, cidrin.mask); if (rc == NGX_ERROR) { return NGX_CONF_ERROR; } } return NGX_CONF_ERROR; }