Python读取纯真IP数据库，pythonip数据库,纯真IP数据库可谓是现在

Python读取纯真IP数据库，pythonip数据库,纯真IP数据库可谓是现在

纯真IP数据库可谓是现在免费IP数据库中最好的了，而且一直在更新。

纯真IP数据库的格式请参考 http://www.truevue.org/database/chunzhen-ip-format

纯真数据库下载： http://www.cz88.net/fox/

下面给出了Python查询纯真IP数据库的源代码。以下Python代码经测试，是可以直接用的。

#!/usr/bin/pythonfrom struct import *import stringdef ip2string( ip ):    a = (ip & 0xff000000) >> 24    b = (ip & 0x00ff0000) >> 16    c = (ip & 0x0000ff00) >> 8    d = ip & 0x000000ff    return "%d.%d.%d.%d" % (a,b,c,d)def string2ip( str ):    ss = string.split(str, '.');    ip = 0L    for s in ss: ip = (ip << 8) + string.atoi(s)    return ip;class IpLocater :    def __init__( self, ipdb_file ):        self.ipdb = open( ipdb_file, "rb" )        # get index address         str = self.ipdb.read( 8 )        (self.first_index,self.last_index) = unpack('II',str)        self.index_count = (self.last_index - self.first_index) / 7 + 1    def getString(self,offset = 0):        if offset :            self.ipdb.seek( offset )        str = ""        ch = self.ipdb.read( 1 )        (byte,) = unpack('B',ch)        while byte != 0:            str = str + ch            ch = self.ipdb.read( 1 )            (byte,) = unpack('B',ch)         return str    def getLong3(self,offset = 0):        if offset :            self.ipdb.seek( offset )        str = self.ipdb.read(3)        (a,b) = unpack('HB',str)        return (b << 16) + a    def getAreaAddr(self,offset=0):        if offset :            self.ipdb.seek( offset )        str = self.ipdb.read( 1 )        (byte,) = unpack('B',str)        if byte == 0x01 or byte == 0x02:            p = self.getLong3()            if p:                return self.getString( p )            else:                return ""        else:            return self.getString( offset )    def getAddr(self,offset ,ip = 0):        self.ipdb.seek( offset + 4)        countryAddr = ""        areaAddr = ""        str = self.ipdb.read( 1 )        (byte,) = unpack('B',str)        if byte == 0x01:            countryOffset = self.getLong3()            self.ipdb.seek(countryOffset )            str = self.ipdb.read( 1 )            (b,) = unpack('B',str)            if b == 0x02:                countryAddr = self.getString( self.getLong3() )                self.ipdb.seek( countryOffset + 4 )            else:                countryAddr = self.getString( countryOffset )            areaAddr = self.getAreaAddr()        elif byte == 0x02:            countryAddr = self.getString( self.getLong3() )            areaAddr = self.getAreaAddr( offset + 8 )        else:            countryAddr = self.getString( offset + 4 )            areaAddr = self.getAreaAddr( )        return countryAddr + "/" + areaAddr    def output(self, first ,last ):        if last > self.index_count :            last = self.index_count        for index in range(first,last):            offset = self.first_index + index * 7            self.ipdb.seek( offset )            buf = self.ipdb.read( 7 )            (ip,of1,of2) = unpack("IHB",buf)            print "%s - %s" % (ip, self.getAddr( of1 + (of2 << 16) ) )    def find(self,ip,left,right):        if right-left == 1:            return left        else:            middle = ( left + right ) / 2            offset = self.first_index + middle * 7            self.ipdb.seek( offset )            buf = self.ipdb.read( 4 )            (new_ip,) = unpack("I",buf)            if ip <= new_ip :                return self.find( ip, left, middle )            else:                return self.find( ip, middle, right )    def getIpAddr(self,ip):        index = self.find( ip,0,self.index_count - 1 )        ioffset = self.first_index + index * 7        aoffset = self.getLong3( ioffset + 4)        address = self.getAddr( aoffset )        return address                if __name__ == "__main__" :    ip_locater = IpLocater( "QQWry.Dat" )    ip_locater.output( 100, 120 )    ip = '59.64.234.174'    ip = '58.38.139.229'    address = ip_locater.getIpAddr( string2ip( ip ) )    print "the ip %s come from %s" % (ip,address)