98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
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# A demo of using the RAS API from Python
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import sys
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import win32ras
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# The error raised if we can not
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class ConnectionError(Exception):
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pass
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def Connect(rasEntryName, numRetries=5):
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"""Make a connection to the specified RAS entry.
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Returns a tuple of (bool, handle) on success.
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- bool is 1 if a new connection was established, or 0 is a connection already existed.
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- handle is a RAS HANDLE that can be passed to Disconnect() to end the connection.
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Raises a ConnectionError if the connection could not be established.
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"""
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assert numRetries > 0
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for info in win32ras.EnumConnections():
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if info[1].lower() == rasEntryName.lower():
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print("Already connected to", rasEntryName)
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return 0, info[0]
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dial_params, have_pw = win32ras.GetEntryDialParams(None, rasEntryName)
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if not have_pw:
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print("Error: The password is not saved for this connection")
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print(
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"Please connect manually selecting the 'save password' option and try again"
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)
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sys.exit(1)
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print("Connecting to", rasEntryName, "...")
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retryCount = numRetries
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while retryCount > 0:
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rasHandle, errCode = win32ras.Dial(None, None, dial_params, None)
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if win32ras.IsHandleValid(rasHandle):
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bValid = 1
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break
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print("Retrying...")
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win32api.Sleep(5000)
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retryCount = retryCount - 1
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if errCode:
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raise ConnectionError(errCode, win32ras.GetErrorString(errCode))
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return 1, rasHandle
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def Disconnect(handle):
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if type(handle) == type(""): # have they passed a connection name?
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for info in win32ras.EnumConnections():
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if info[1].lower() == handle.lower():
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handle = info[0]
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break
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else:
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raise ConnectionError(0, "Not connected to entry '%s'" % handle)
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win32ras.HangUp(handle)
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usage = """rasutil.py - Utilities for using RAS
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Usage:
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rasutil [-r retryCount] [-c rasname] [-d rasname]
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-r retryCount - Number of times to retry the RAS connection
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-c rasname - Connect to the phonebook entry specified by rasname
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-d rasname - Disconnect from the phonebook entry specified by rasname
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"""
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def Usage(why):
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print(why)
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print(usage)
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sys.exit(1)
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if __name__ == "__main__":
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import getopt
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try:
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opts, args = getopt.getopt(sys.argv[1:], "r:c:d:")
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except getopt.error as why:
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Usage(why)
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retries = 5
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if len(args) != 0:
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Usage("Invalid argument")
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for opt, val in opts:
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if opt == "-c":
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Connect(val, retries)
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if opt == "-d":
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Disconnect(val)
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if opt == "-r":
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retries = int(val)
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