127 lines
4.0 KiB
Python
127 lines
4.0 KiB
Python
#The MIT License (MIT)
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#
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#Copyright (c) 2014-2015 Bohdan Danishevsky ( dbn@aminis.com.ua )
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#
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#Permission is hereby granted, free of charge, to any person obtaining a copy
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#of this software and associated documentation files (the "Software"), to deal
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#in the Software without restriction, including without limitation the rights
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#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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#copies of the Software, and to permit persons to whom the Software is
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#furnished to do so, subject to the following conditions:
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#
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#The above copyright notice and this permission notice shall be included in all
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#copies or substantial portions of the Software.
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#
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#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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#SOFTWARE.
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"""
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This file is part of sim-module package. USSD requests processing classes and functions.
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sim-module package allows to communicate with SIM 900 modules: send SMS, make HTTP requests and use other
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functions of SIM 900 modules.
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Copyright (C) 2014-2015 Bohdan Danishevsky ( dbn@aminis.com.ua ) All Rights Reserved.
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"""
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from lib.sim900.gsm import SimGsm
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from lib.sim900.simshared import *
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class SimUssdHandler(SimGsm):
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def __init__(self, port, logger):
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SimGsm.__init__(self, port, logger)
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self.lastUssdResult = None
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@staticmethod
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def __parseResult(value):
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#parsing strings like '+CUSD: 0,"data string"'
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#searching and removing '+CUSD' prefix
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idx = value.find(":")
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if idx == -1:
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return None
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left = value[:idx]
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left = str(left).strip()
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if left != "+CUSD":
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return None
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data = value[(idx+1):]
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data = str(data).strip()
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#searching and removing numeric parameter
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idx = data.find(",")
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if idx == -1:
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return None
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#also, we can use this code. But I dont know how
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code = data[:idx]
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data = data[(idx+1):]
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data = str(data).strip()
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data = data.rstrip(',')
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data = data.strip('"')
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return data
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def runUssdCode(self, ussdCode):
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cmd = "AT+CUSD=1,\"{0}\",15".format(ussdCode)
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self.logger.info("running command = '{0}'".format(cmd))
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#executing command, also we can retrieve result right here
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result = self.commandAndStdResult(cmd, 20000)
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if (result is None) or (self.lastResult != 'OK'):
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self.setWarn("error running USSD command '{0}'".format(ussdCode))
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return False
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result = str(result).strip()
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#checking that we have result here
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if len(result) > 0:
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self.lastUssdResult = self.__parseResult(result)
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if self.lastUssdResult is None:
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self.setWarn("error parsing USSD command result")
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return False
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return True
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#reading data line
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dataLine = self.readNullTerminatedLn(20000)
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if dataLine is None:
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self.setWarn("error waiting for USSD command result")
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return False
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dataLine = str(dataLine).strip()
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#reading bytes in the end of response
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data = self.readFixedSzieByteArray(1, 500)
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if data == bytes([0xff]):
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data = None
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endLine = self.readLn(500)
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if (data is not None) or (endLine is not None):
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endLine = noneToEmptyString(data) + noneToEmptyString(endLine)
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endLine = str(endLine).strip()
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if len(endLine) > 0:
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dataLine += endLine
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#parsing CUSD result
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self.lastUssdResult = self.__parseResult(dataLine)
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if self.lastUssdResult is None:
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return False
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return True
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