python subprocess run调用net-snmp snmpwalk输出正常解析显示中文

ゝ一纸荒年。 2023-10-03 09:16 9阅读 0赞

import re
    from subprocess import run, PIPE
    
    
    def bitstring_to_bytes(s):
        v = int(s, 2)
        b = bytearray()
        while v:
            b.append(v & 0xff)
            v >>= 8
        return bytes(b[::-1])
    
    
    def main():
        ipaddress = '127.0.0.1'
        oid = '.1.3.6.1.2.1.25.6.3.1'
        community = 'public'
        port = '161'
        host = '{}:{}'.format(ipaddress, port)
        timeout = 1000
    
        cmdargs = [
            'snmpwalk', '-Pe', '-t', str(timeout), '-r', '0', '-v', '2c',
            '-c', community, host, oid
        ]
        print(cmdargs)
        cmd = run(cmdargs, stdout=PIPE, stderr=PIPE)
    
        if cmd.returncode != 0:
            print(cmd.stderr, host)
        else:
            cmdoutput = cmd.stdout.splitlines()
            result = []
            for line in cmdoutput:
                item = line.decode('utf-8').split(' = ', 1)
                if len(item) > 1:
                    if 'No Such Instance' in item[1]:
                        item[1] = None
                    result.append(tuple(item))
                else:
                    prev_item = list(result[-1])
                    prev_item[1] += '\n' + item[0]
                    result[-1] = tuple(prev_item)
            for row in result:
                print(row)
                split = row[1].split(':', 2);
                if split[0] == 'Hex-STRING':
                    temp = split[1].replace('\n', '')
                    temp = temp.replace(' ', '')
                    hex = re.sub('/[^a-zA-Z0-9]+/', '', temp)
                    print(hex)
                    bstr = "{0:08b}".format(int(hex, 16))
                    print(bitstring_to_bytes(bstr).decode('gbk'))
    
    
    if __name__ == '__main__':
        main()