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76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
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#ifndef __DNS_SERVER_INCLUDE_H__
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#define __DNS_SERVER_INCLUDE_H__
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#include "lib_acl.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define USE_THREAD_POOL /* 外挂查询DNS模块采用线程池方式 */
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/* 查询DNS的消息类型定义 */
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#define DNS_MSG_LOOKUP ACL_MSGIO_USER + 100
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#define DNS_MSG_LOOKUP_RESULT ACL_MSGIO_USER + 101
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#define DNS_IP_MAX 5
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typedef struct DNS_CTX DNS_CTX;
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typedef struct DNS_SERVER DNS_SERVER;
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typedef struct DNS_CACHE DNS_CACHE;
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typedef void (*DNS_CALLBACK)(const DNS_CTX *);
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struct DNS_CTX {
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/* public */
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char domain_key[256]; /* 域名(小写) */
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char ip[DNS_IP_MAX][64]; /* IP地址数组 */
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int port[DNS_IP_MAX]; /* port 数组 */
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int ip_cnt; /* IP地址数组中的有效IP地址个数 */
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time_t begin; /* 开始查询时的时间截 */
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/* public */
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DNS_CALLBACK callback; /* 查询返回调用的用户的回调函数 */
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void *context; /* 用户传递的参数 */
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/* private */
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DNS_SERVER *dns; /* DNS对象句柄，内部变量 */
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ACL_MSGIO *mio; /* IO消息句柄，内部变量 */
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ACL_DNS_DB *dns_db; /* 临时用以传递DNS查询结果，内部变量 */
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};
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struct DNS_SERVER {
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ACL_AIO *aio; /* 异步通信框架 */
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acl_pthread_pool_t *wq; /* 线程池句柄 */
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ACL_MSGIO *listener; /* 消息监听者句柄 */
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ACL_MSGIO *mio; /* 消息句柄 */
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char addr[256];
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DNS_CACHE *dns_cache; /* DNS缓存句柄 */
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acl_pthread_mutex_t lock; /* 线程锁 */
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};
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/* in dns_server.c */
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DNS_SERVER *dns_server_create(ACL_AIO *aio, int timeout);
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void dns_server_close(DNS_SERVER *dns);
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void dns_server_static_add(DNS_SERVER *dns, const char *map, const char *delim, int def_port);
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int dns_server_lookup(DNS_SERVER *dns, const DNS_CTX *ctx);
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/* in dns_cache.c */
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void dns_cache_push_one(DNS_CACHE *dns_cache, const ACL_DNS_DB *dns_db, int timeout);
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void dns_cache_push(DNS_CACHE *dns_cache, const ACL_DNS_DB *dns_db);
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void dns_cache_push2(DNS_CACHE *dns_cache, const DNS_CTX *dns_ctx);
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ACL_DNS_DB *dns_cache_lookup(DNS_CACHE *dns_cache, const char *name);
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void dns_cache_del_host(DNS_CACHE *dns_cache, const char *name);
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DNS_CACHE *dns_cache_create(int timeout, int thread_safe);
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/* in dns_hosts.c */
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void dns_hosts_load(ACL_DNS *dns_handle, const char *filename);
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#ifdef __cplusplus
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}
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#endif
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#endif
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