commit 10/31/2015

lib/sim900.bak/ussdhandler.py

@@ -0,0 +1,126 @@
+#The MIT License (MIT)
+#
+#Copyright (c) 2014-2015 Bohdan Danishevsky ( dbn@aminis.com.ua )
+#
+#Permission is hereby granted, free of charge, to any person obtaining a copy
+#of this software and associated documentation files (the "Software"), to deal
+#in the Software without restriction, including without limitation the rights
+#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+#copies of the Software, and to permit persons to whom the Software is
+#furnished to do so, subject to the following conditions:
+#
+#The above copyright notice and this permission notice shall be included in all
+#copies or substantial portions of the Software.
+#
+#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+#SOFTWARE.
+
+"""
+This file is part of sim-module package. USSD requests processing classes and functions.
+
+sim-module package allows to communicate with SIM 900 modules: send SMS, make HTTP requests and use other
+functions of SIM 900 modules.
+
+Copyright (C) 2014-2015 Bohdan Danishevsky ( dbn@aminis.com.ua ) All Rights Reserved.
+"""
+
+from lib.sim900.gsm import SimGsm
+from lib.sim900.simshared import *
+
+class SimUssdHandler(SimGsm):
+    def __init__(self, port, logger):
+        SimGsm.__init__(self, port, logger)
+        self.lastUssdResult = None
+
+    @staticmethod
+    def __parseResult(value):
+        #parsing strings like '+CUSD: 0,"data string"'
+
+        #searching and removing '+CUSD' prefix
+        idx = value.find(":")
+        if idx == -1:
+            return None
+
+        left = value[:idx]
+        left = str(left).strip()
+        if left != "+CUSD":
+            return None
+
+        data = value[(idx+1):]
+        data = str(data).strip()
+
+        #searching and removing numeric parameter
+        idx = data.find(",")
+        if idx == -1:
+            return None
+
+        #also, we can use this code. But I dont know how
+        code = data[:idx]
+        data = data[(idx+1):]
+
+        data = str(data).strip()
+
+        data = data.rstrip(',')
+        data = data.strip('"')
+
+        return data
+
+    def runUssdCode(self, ussdCode):
+        cmd = "AT+CUSD=1,\"{0}\",15".format(ussdCode)
+        self.logger.info("running command = '{0}'".format(cmd))
+
+        #executing command, also we can retrieve result right here
+        result = self.commandAndStdResult(cmd, 20000)
+
+        if (result is None) or (self.lastResult != 'OK'):
+            self.setWarn("error running USSD command '{0}'".format(ussdCode))
+            return False
+
+        result = str(result).strip()
+
+        #checking that we have result here
+        if len(result) > 0:
+            self.lastUssdResult = self.__parseResult(result)
+
+            if self.lastUssdResult is None:
+                self.setWarn("error parsing USSD command result")
+                return False
+
+            return True
+
+        #reading data line
+        dataLine = self.readNullTerminatedLn(20000)
+
+        if dataLine is None:
+            self.setWarn("error waiting for USSD command result")
+            return False
+
+        dataLine = str(dataLine).strip()
+
+        #reading bytes in the end of response
+        data = self.readFixedSzieByteArray(1, 500)
+        if data == bytes([0xff]):
+            data = None
+
+        endLine = self.readLn(500)
+
+        if (data is not None) or (endLine is not None):
+            endLine = noneToEmptyString(data) + noneToEmptyString(endLine)
+            endLine = str(endLine).strip()
+
+            if len(endLine) > 0:
+                dataLine += endLine
+
+        #parsing CUSD result
+        self.lastUssdResult = self.__parseResult(dataLine)
+
+        if self.lastUssdResult is None:
+            return False
+
+        return True
+