func (self RedisDB) UnbanAddr(addr string) (err error) {
_, err = self.client.Del(IP_BAN_PREFIX + addr).Result()
isnet, ipnet := util.IsSubnet(addr)
var start string
var range_start string
if isnet {
min, max := util.IPNet2MinMax(ipnet)
range_start = util.ZeroIPString(min)
start = util.ZeroIPString(max)
} else {
_, err = self.client.Del(IP_BAN_PREFIX + addr).Result()
return
}
res, err := self.client.ZRangeByLex(IP_RANGE_BAN_KR, redis.ZRangeByScore{Min: "[" + start, Max: "+", Count: 1}).Result()
if err == nil && len(res) > 0 {
var range_min string
range_max := res[0]
range_min, err = self.client.HGet(IP_RANGE_BAN_PREFIX+range_max, "start").Result()
if err != nil {
return
}
banned := strings.Compare(range_start, range_min) >= 0
if banned {
self.client.ZRem(IP_RANGE_BAN_KR, range_max)
self.client.Del(IP_RANGE_BAN_PREFIX + range_max)
}
}
return
}
func (self RedisDB) CheckIPBanned(addr string) (banned bool, err error) {
banned, err = self.client.Exists(IP_BAN_PREFIX + addr).Result()
if banned {
return
}
isnet, ipnet := util.IsSubnet(addr)
var start string
var range_start string
if isnet {
min, max := util.IPNet2MinMax(ipnet)
range_start = util.ZeroIPString(min)
start = util.ZeroIPString(max)
} else {
ip := net.ParseIP(addr)
if ip == nil {
return false, errors.New("Couldn't parse IP")
}
start = util.ZeroIPString(ip)
range_start = start
}
res, err := self.client.ZRangeByLex(IP_RANGE_BAN_KR, redis.ZRangeByScore{Min: "[" + start, Max: "+", Count: 1}).Result()
if err == nil && len(res) > 0 {
var range_min string
range_max := res[0]
range_min, err = self.client.HGet(IP_RANGE_BAN_PREFIX+range_max, "start").Result()
if err != nil {
return
}
banned = strings.Compare(range_start, range_min) >= 0
}
return
}
func (self RedisDB) BanAddr(addr string) (err error) {
isnet, ipnet := util.IsSubnet(addr)
if !isnet {
_, err = self.client.HMSet(IP_BAN_PREFIX+addr, "addr", addr, "made", strconv.Itoa(int(util.TimeNow()))).Result()
return
}
isBanned, err := self.CheckIPBanned(addr)
if !isBanned && err == nil { //make sure this range isn't banned already
min, max := util.IPNet2MinMax(ipnet)
start := util.ZeroIPString(min)
end := util.ZeroIPString(max)
self.clearIPRange(start, end) //delete all banned ranges that are contained within this range
_, err = self.client.ZAdd(IP_RANGE_BAN_KR, redis.Z{Score: 0.0, Member: end}).Result()
if err != nil {
return
}
_, err = self.client.HMSet(IP_RANGE_BAN_PREFIX+end, "start", start, "end", end, "made", strconv.Itoa(int(util.TimeNow()))).Result()
}
return
}
