Mercurial > hg > nginx
view src/http/modules/ngx_http_access_module.c @ 647:95d7da23ea53 release-0.3.45
nginx-0.3.45-RELEASE import
*) Feature: the "ssl_verify_client", "ssl_verify_depth", and
"ssl_client_certificate" directives.
*) Change: the $request_method variable now returns the main request
method.
*) Change: the ° symbol codes were changed in koi-win conversion
table.
*) Feature: the euro and N symbols were added to koi-win conversion
table.
*) Bugfix: if nginx distributed the requests among several backends and
some backend failed, then requests intended for this backend was
directed to one live backend only instead of being distributed among
the rest.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sat, 06 May 2006 16:28:56 +0000 |
parents | 5d2b8078c1c2 |
children | 6d5c1535bb9d |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> /* AF_INET only */ typedef struct { in_addr_t mask; in_addr_t addr; ngx_uint_t deny; /* unsigned deny:1; */ } ngx_http_access_rule_t; typedef struct { ngx_array_t *rules; /* array of ngx_http_access_rule_t */ } ngx_http_access_loc_conf_t; static ngx_int_t ngx_http_access_handler(ngx_http_request_t *r); static char *ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static void *ngx_http_access_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_int_t ngx_http_access_init(ngx_cycle_t *cycle); static ngx_command_t ngx_http_access_commands[] = { { ngx_string("allow"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |NGX_CONF_TAKE1, ngx_http_access_rule, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("deny"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |NGX_CONF_TAKE1, ngx_http_access_rule, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, ngx_null_command }; ngx_http_module_t ngx_http_access_module_ctx = { NULL, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_access_create_loc_conf, /* create location configuration */ ngx_http_access_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_access_module = { NGX_MODULE_V1, &ngx_http_access_module_ctx, /* module context */ ngx_http_access_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ ngx_http_access_init, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_int_t ngx_http_access_handler(ngx_http_request_t *r) { ngx_uint_t i; struct sockaddr_in *sin; ngx_http_access_rule_t *rule; ngx_http_access_loc_conf_t *alcf; alcf = ngx_http_get_module_loc_conf(r, ngx_http_access_module); if (alcf->rules == NULL) { return NGX_OK; } /* AF_INET only */ sin = (struct sockaddr_in *) r->connection->sockaddr; rule = alcf->rules->elts; for (i = 0; i < alcf->rules->nelts; i++) { ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "access: %08XD %08XD %08XD", sin->sin_addr.s_addr, rule[i].mask, rule[i].addr); if ((sin->sin_addr.s_addr & rule[i].mask) == rule[i].addr) { if (rule[i].deny) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "access forbidden by rule"); return NGX_HTTP_FORBIDDEN; } return NGX_OK; } } return NGX_OK; } static char * ngx_http_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_access_loc_conf_t *alcf = conf; ngx_str_t *value; ngx_inet_cidr_t in_cidr; ngx_http_access_rule_t *rule; if (alcf->rules == NULL) { alcf->rules = ngx_array_create(cf->pool, 4, sizeof(ngx_http_access_rule_t)); if (alcf->rules == NULL) { return NGX_CONF_ERROR; } } rule = ngx_array_push(alcf->rules); if (rule == NULL) { return NGX_CONF_ERROR; } value = cf->args->elts; rule->deny = (value[0].data[0] == 'd') ? 1 : 0; if (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0) { rule->mask = 0; rule->addr = 0; return NGX_CONF_OK; } rule->addr = inet_addr((char *) value[1].data); if (rule->addr != INADDR_NONE) { rule->mask = 0xffffffff; return NGX_CONF_OK; } if (ngx_ptocidr(&value[1], &in_cidr) == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[1]); return NGX_CONF_ERROR; } rule->mask = in_cidr.mask; rule->addr = in_cidr.addr; return NGX_CONF_OK; } static void * ngx_http_access_create_loc_conf(ngx_conf_t *cf) { ngx_http_access_loc_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_access_loc_conf_t)); if (conf == NULL) { return NGX_CONF_ERROR; } return conf; } static char * ngx_http_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_access_loc_conf_t *prev = parent; ngx_http_access_loc_conf_t *conf = child; if (conf->rules == NULL) { conf->rules = prev->rules; } return NGX_CONF_OK; } static ngx_int_t ngx_http_access_init(ngx_cycle_t *cycle) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_http_access_handler; return NGX_OK; }