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141 lines
3.6 KiB
141 lines
3.6 KiB
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/*
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* Copyright (C) Nginx, Inc.
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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typedef struct {
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ngx_str_t name;
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} ngx_http_ua_access_loc_conf_t;
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static ngx_int_t ngx_http_ua_access_handler(ngx_http_request_t *r);
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static void *ngx_http_ua_access_create_loc_conf(ngx_conf_t *cf);
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static char *ngx_http_ua_access_merge_loc_conf(ngx_conf_t *cf, void *parent,
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void *child);
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static ngx_int_t ngx_http_ua_access_init(ngx_conf_t *cf);
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static ngx_command_t ngx_http_ua_access_commands[] = {
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{ ngx_string("ua_access"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_str_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_ua_access_loc_conf_t, name),
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NULL },
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ngx_null_command
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};
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static ngx_http_module_t ngx_http_ua_access_module_ctx = {
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NULL, /* preconfiguration */
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ngx_http_ua_access_init, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_http_ua_access_create_loc_conf, /* create location configuration */
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ngx_http_ua_access_merge_loc_conf /* merge location configuration */
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};
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ngx_module_t ngx_http_ua_access_module = {
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NGX_MODULE_V1,
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&ngx_http_ua_access_module_ctx, /* module context */
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ngx_http_ua_access_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_int_t
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ngx_http_ua_access_handler(ngx_http_request_t *r)
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{
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ngx_http_ua_access_loc_conf_t *ulcf;
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http ua access handler");
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ulcf = ngx_http_get_module_loc_conf(r, ngx_http_ua_access_module);
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if (ulcf->name.len == 0) {
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return NGX_DECLINED;
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}
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if (r->headers_in.user_agent
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&& ngx_strstr(r->headers_in.user_agent->value.data, ulcf->name.data))
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{
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return NGX_OK;
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}
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return NGX_HTTP_FORBIDDEN;
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}
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static void *
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ngx_http_ua_access_create_loc_conf(ngx_conf_t *cf)
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{
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ngx_http_ua_access_loc_conf_t *conf;
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conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ua_access_loc_conf_t));
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if (conf == NULL) {
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return NULL;
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}
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/*
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* set by ngx_pcalloc():
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*
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* conf->name = { 0, NULL };
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*/
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return conf;
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}
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static char *
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ngx_http_ua_access_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
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{
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ngx_http_ua_access_loc_conf_t *prev = parent;
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ngx_http_ua_access_loc_conf_t *conf = child;
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ngx_conf_merge_str_value(conf->name, prev->name, "");
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return NGX_CONF_OK;
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}
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static ngx_int_t
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ngx_http_ua_access_init(ngx_conf_t *cf)
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{
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ngx_http_handler_pt *h;
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ngx_http_core_main_conf_t *cmcf;
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cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers);
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if (h == NULL) {
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return NGX_ERROR;
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}
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*h = ngx_http_ua_access_handler;
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return NGX_OK;
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}
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