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R - 1:
112 M = int((L + R) / 2)
113 self._set_ip_range(M)
114 if ip == self.cur_start_ip:
115 L = M
116 break
117 if ip > self.cur_start_ip:
118 L = M
119 else:
120 R = M
121 self._set_ip_range(L)
122 # version information, 255.255.255.X, urgy but useful
123 if ip & 0xffffff00 == 0xffffff00:
124 self._set_ip_range(R)
125 if self.cur_start_ip <= ip <= self.cur_end_ip:
126 address = self._get_addr(self.cur_end_ip_offset)
127 else:
128 address = "未找到该IP的地址"
129 return address
130
131 def get_ip_range(self, ip):
132 '''
133 返回ip所在记录的IP段
134 :param ip: ip(str or int)
135 :return: str
136 '''
137 if type(ip) == str:
138 ip = self.str2ip(ip)
139 self.get_addr_by_ip(ip)
140 range = self.ip2str(self.cur_start_ip) + ' - ' \
141 + self.ip2str(self.cur_end_ip)
142 return range
143
144 def get_offset_string(self, offset=0):
145 '''
146 获取文件偏移处的字符串(以'\0'结尾)
147 :param offset: 偏移
148 :return: str
149 '''
150 if offset:
151 self.f_db.seek(offset)
152 bs = b''
153 ch = self.f_db.read(1)
154 (byte,) = struct.unpack('B', ch)
155 while byte != 0:
156 bs += ch
157 ch = self.f_db.read(1)
158 (byte,) = struct.unpack('B', ch)
159 return bs.decode('gbk')
160
161 def ip2str(self, ip):
162 '''
163 整数IP转化为IP字符串
164 :param ip:
165 :return:
166 '''
167 return str(ip >> 24) + '.' + str((ip >> 16) & 0xff) + '.' + str((ip >> 8) & 0xff) + '.' + str(ip & 0xff)
168
169 def str2ip(self, s):
170 '''
171 IP字符串转换为整数IP
172 :param s:
173 :return:
174 '''
175 (ip,) = struct.unpack('I', socket.inet_aton(s))
176 return ((ip >> 24) & 0xff) | ((ip & 0xff) << 24) | ((ip >> 8) & 0xff00) | ((ip & 0xff00) << 8)
177
178 def getLong3(self, offset=0):
179 '''
180 3字节的数值
181 :param offset:
182 :return:
183 '''
184 if offset:
185 self.f_db.seek(offset)
186 bs = self.f_db.read(3)
187 (a, b) = struct.unpack('HB', bs)
188 return (b << 16) + a
189
190
191
192 if __name__ == '__main__':
193 cz = CzIp()
194 print(cz.get_version())
195 ip = '14.215.177.39'
196 print(cz.get_ip_range(ip))
197 print(cz.get_addr_by_ip(ip))
运行结果:
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