CREATE DEFINER=`root`@`%` FUNCTION `uc_session_login`(`reqjson` JSON,`srvjson` JSON
)
RETURNS json
LANGUAGE SQL
NOT DETERMINISTIC
CONTAINS SQL
SQL SECURITY DEFINER
COMMENT 'JSON用户登录'
BEGIN#SELECT `uc_session_login`('{"email":"xxscn@qq.com","pwdmd5":"md5加密后的密码"}','{"ipaddress":"用户登录的IP地址"}')jsonDECLARE retjson JSON DEFAULT'{"errno":0}';#密钥表DECLARE _keyid INT(10)UNSIGNED;DECLARE _secretkey CHAR(32);#登录表DECLARE _uid INT(10)UNSIGNED;DECLARE _username VARCHAR(50);DECLARE _password CHAR(32);DECLARE _salt CHAR(6);#地址记录表DECLARE _failedlogins INT(10)UNSIGNED;DECLARE _beforedel TIMESTAMP;#与字段无关的输入DECLARE failedlogins_max INT(10)UNSIGNED DEFAULT 3;#密码错误次数上限DECLARE failedlogins_timeout INT(10)UNSIGNED DEFAULT 20;#时间范围内清零计数DECLARE failedlogins_unlocktime INT(10)UNSIGNED DEFAULT 10;#密码错误次数超限后锁定时间#DECLARE srvjson JSON DEFAULT IFNULL(CAST(@srvjson AS CHAR),'{}');#IFNULL(@srvjson,'{}')#已由会话变量改为函数的参数DECLARE secretkey2 VARCHAR(32)DEFAULT IFNULL(srvjson->>'$.secretkey2','');#二级密钥DECLARE useripaddress VARCHAR(39)DEFAULT srvjson->>'$.ipaddress';#用户IP地址DECLARE req_email VARCHAR(50)DEFAULT reqjson->>'$.email';DECLARE req_pwdmd5 CHAR(32)DEFAULT reqjson->>'$.pwdmd5';#与字段无关的输出DECLARE json JSON DEFAULT'{}';#首先判断IP地址是否已被禁止尝试密码DELETE FROM uc_session_ipaddress WHERE beforedel<CURRENT_TIMESTAMP();#删除较早的IPSET _failedlogins=0;SELECT failedlogins,beforedel INTO _failedlogins,_beforedel FROM uc_session_ipaddress WHERE ipaddress=useripaddress;IF _failedlogins>=failedlogins_max THENSET retjson=JSON_SET(retjson,'$.errno',-11);SET retjson=JSON_SET(retjson,'$.message',CONCAT('由于密码错误次数过多，已被锁定。解锁时间：',_beforedel));RETURN retjson;END IF;SELECT uid,username,`password`,salt INTO _uid,_username,_password,_salt FROM uc_members WHERE email=req_email;IF ISNULL(_uid) THEN RETURN '{"error":-1,"message":"您输入的E-Mail尚未注册"}';END IF;IF MD5(CONCAT(req_pwdmd5,_salt))<>_password THENINSERT INTO uc_session_log(uid,ipaddress,errno,error)VALUES(_uid,useripaddress,-2,'登录密码错误');SET @curfailed=_failedlogins+1;IF _failedlogins=0 THEN#第一次密码错误INSERT INTO uc_session_ipaddress(ipaddress,failedlogins,beforedel)VALUES(useripaddress,1,TIMESTAMPADD(SECOND,failedlogins_timeout,CURRENT_TIMESTAMP()));ELSEUPDATE uc_session_ipaddress SET failedlogins=@curfailed,beforedel=TIMESTAMPADD(SECOND,failedlogins_unlocktime,CURRENT_TIMESTAMP()) WHERE ipaddress=useripaddress;END IF;IF @curfailed>=failedlogins_max THENSET retjson=JSON_SET(retjson,'$.errno',-3);SET retjson=JSON_SET(retjson,'$.message',CONCAT('由于密码错误次数已达',failedlogins_max,'次，现已被锁定',failedlogins_unlocktime,'秒'));RETURN retjson;END IF;SET retjson=JSON_SET(retjson,'$.errno',-2);SET retjson=JSON_SET(retjson,'$.message',CONCAT('您已输错',@curfailed,'次密码，如再错',failedlogins_max-@curfailed,'次将被锁定',failedlogins_unlocktime,'秒'));RETURN retjson;END IF;#登录校验已通过，开始取得secretkey并出hmacSELECT id,secretkey INTO _keyid,_secretkey FROM uc_session_key WHERE started<CURRENT_TIMESTAMP() AND expired>CURRENT_TIMESTAMP() ORDER BY expired DESC LIMIT 1;IF ISNULL(_keyid) OR ISNULL(_secretkey) THEN RETURN '{"error":-3,"message":"secretkey获取失败"}';END IF;SET json=JSON_SET(json,'$.logintime',UNIX_TIMESTAMP(CURRENT_TIMESTAMP(6)));SET json=JSON_SET(json,'$.loginip',useripaddress);SET json=JSON_SET(json,'$.uid',_uid);SET json=JSON_SET(json,'$.email',req_email);SET json=JSON_SET(json,'$.username',_username);SET json=JSON_SET(json,'$.password',_password);SET json=JSON_SET(json,'$.salt',_salt);DELETE FROM uc_session_ipaddress WHERE ipaddress=useripaddress;#删除较早的IPINSERT INTO uc_session_log(uid,ipaddress,errno,error)VALUES(_uid,useripaddress,0,'登录成功');SET retjson=JSON_SET(retjson,'$.userjson',CAST(json AS CHAR));SET retjson=JSON_SET(retjson,'$.keyid',_keyid);SET retjson=JSON_SET(retjson,'$.hmacsha1',uc_session_hmacsha1(CONCAT(_secretkey,secretkey2),retjson->>'$.userjson'));SET retjson=JSON_SET(retjson,'$.errno',0);SET retjson=JSON_SET(retjson,'$.message','登录成功');RETURN retjson;
END