引发socket.error(msg)python ICMP Pinger操作不允许

时间:2019-02-21 09:53:59

标签: python ping checksum icmp

我正在为python创建ICMP Pinger类,但是每当我运行此代码时,我都会不断收到相同的错误消息。我查了一下,我知道它可能是由于没有SUDO访问权限引起的,但是尝试以sudo python ICMPPinger.py在终端中运行它,但仍然出现了相同的错误。任何帮助表示赞赏。

ICMPPing.py:

ICMP_ECHO_REQUEST = 8  # ICMP type code for echo request messages
ICMP_ECHO_REPLY = 0  # ICMP type code for echo reply messages
timeRTT = []
packageSent = 0
packageRev = 0


def checksum(string):
    csum = 0
    countTo = (len(string) // 2) * 2
    count = 0

    while count < countTo:
        thisVal = ord(string[count + 1]) * 256 + ord(string[count])
        csum = csum + thisVal
        csum = csum & 0xffffffff
        count = count + 2

    if countTo < len(string):
        csum = csum + ord(string[len(string) - 1])
        csum = csum & 0xffffffff

    csum = (csum >> 16) + (csum & 0xffff)
    csum = csum + (csum >> 16)
    answer = ~csum
    answer = answer & 0xffff
    answer = answer >> 8 | (answer << 8 & 0xff00)

    if sys.platform == 'darwin':
        answer = socket.htons(answer) & 0xffff
    else:
        answer = socket.htons(answer)

    return answer


def receiveOnePing(icmpSocket, destinationAddress, ID, timeout):
    global packageRev, timeRTT
    timeLeft = timeout
    while 1:
        startedSelect = time.time()
        whatReady = select.select([icmpSocket], [], [], timeLeft)
        howLongInSelect = (time.time() - startedSelect)
        if whatReady[0] == []:  # Timeout
            return "0: Destination Network Unreachable,"
        timeReceived = time.time()
        recPacket, addr = icmpSocket.recvfrom(1024)

        icmpHeader = recPacket[20:28]
        requestType, code, revChecksum, revId, revSequence = struct.unpack('bbHHh', icmpHeader)
        if ID == revId:
            bytesInDouble = struct.calcsize('d')
            timeData = struct.unpack('d', recPacket[28:28 + bytesInDouble])[0]
            timeRTT.append(timeReceived - timeData)
            packageRev += 1
            return timeReceived - timeData
        else:
            return "ID is not the same!"
        timeLeft = timeLeft - howLongInSelect
        # Fill in end
        if timeLeft <= 0:
            return "1: Destination Host Unreachable."


def sendOnePing(icmpSocket, destinationAddress, ID):
    global packageSent
    # Header is type (8), code (8), checksum (16), id (16), sequence (16)
    myChecksum = 0
    # Make a dummy header with a 0 checksum.
    # struct -- Interpret strings as packed binary data
    header = struct.pack("bbHHh", ICMP_ECHO_REQUEST, 0, myChecksum, ID, 1)
    data = struct.pack("d", time.time())
    # Calculate the checksum on the data and the dummy header.
    myChecksum = checksum(header + data)
    # Get the right checksum, and put in the header
    if sys.platform == 'darwin':
        myChecksum = socket.htons(myChecksum) & 0xffff
        # Convert 16-bit integers from host to network byte order.
    else:
        myChecksum = socket.htons(myChecksum)
    header = struct.pack("bbHHh", ICMP_ECHO_REQUEST, 0, myChecksum, ID, 1)
    packet = header + data
    icmpSocket.sendto(packet, (destinationAddress, 1))
    packageSent += 1

    # pass  # Remove/replace when function is complete


def doOnePing(destinationAddress, timeout):
    icmp = socket.getprotobyname("icmp")
    try:
        mySocket = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)
    except socket.error, (errno, msg):
        if errno == 1:
            raise socket.error(msg)
    # Fill in end
    myID = os.getpid() & 0xFFFF  # Return the current process i
    sendOnePing(mySocket, destinationAddress, myID)
    delay = receiveOnePing(mySocket, myID, timeout, destinationAddress)
    mySocket.close()
    return delay


def ping(host, timeout=1):

    # timeout=1 means: If one second goes by without a reply from the server,
    dest = socket.gethostbyname(host)
    print "Pinging " + dest + " using Python:"
    print ""
    # Send ping requests to a server separated by approximately one second
    while 1:
        delay = doOnePing(dest, timeout)
        print "RTT:", delay
        print "maxRTT:", (max(timeRTT) if len(timeRTT) > 0 else 0), "\tminRTT:", (
            min(timeRTT) if len(timeRTT) > 0 else 0), "\naverageRTT:", float(
            sum(timeRTT) / len(timeRTT) if len(timeRTT) > 0 else float("nan"))
        print "Package Lose Rate:", ((packageSent - packageRev) / packageSent if packageRev > 0 else 0)
        time.sleep(1)  # one second
        return delay


ping("google.com")

错误消息:

  

回溯(最近通话最近):文件   “ /用户/jonathanthomann/PycharmProjects/ICMPPing/ICMPPing.py”,第   133,在       ping(“ google.com”)文件“ /Users/jonathanthomann/PycharmProjects/ICMPPing/ICMPPing.py”,行   123,在ping       延迟= doOnePing(目的地,超时)文件“ /Users/jonathanthomann/PycharmProjects/ICMPPing/ICMPPing.py”,行   106,在doOnePing中       引发socket.error(msg)socket.error:不允许操作

0 个答案:

没有答案