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84 lines
2.4 KiB
Python
84 lines
2.4 KiB
Python
#!/usr/bin/python
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# -*- coding: cp1252 -*-
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"""
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Functions for the RegEX filter
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@author: Bastian Schroll
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@requires: Configuration has to be set in the config.ini
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"""
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import logging # Global logger
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import re #Regex for Filter Check
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from includes import globals # Global variables
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def loadFilters():
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"""
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load all filters from the config.ini into globals.filterList
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@requires: Configuration has to be set in the config.ini
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@return: nothing
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@exception: Exception if filter loading failed
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"""
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try:
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logging.debug("loading filters")
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# For each entry in config.ini [Filters] section
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for key,val in globals.config.items("Filters"):
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logging.debug(" - %s = %s", key, val)
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filter = val.split(";")
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# insert splitet data into globals.filterList
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globals.filterList.append({"name": key, "typ": filter[0], "dataField": filter[1], "plugin": filter[2], "freq": freqToHz(filter[3]), "regex": filter[4]})
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except:
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logging.exception("cannot read config file")
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def checkFilters(typ,data,plugin,freq):
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"""
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Check the Typ/Plugin combination with the RegEX filter
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If no filter for the combination is found, function returns True.
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@type typ: string (FMS|ZVEI|POC)
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@param typ: Typ of the dataset
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@type data: map of data (structure see interface.txt)
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@param data: Contains the parameter
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@type plugin: string
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@param plugin: Name of the plugin to checked
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@type freq: string
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@param freq: frequency of the SDR Stick
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@requires: all filters in the filterList
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@return: nothing
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@exception: Exception if filter check failed
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"""
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try:
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logging.debug("search Filter for %s to %s at %s Hz", typ, plugin, freq)
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foundFilter = False
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# go to all filter in globals.filterList
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for i in globals.filterList:
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# if typ/plugin/freq combination is found
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if i["typ"] == typ and (i["plugin"] == plugin or i['plugin'] == "*") and (i["freq"] == freq or i['freq'] == "*"):
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foundFilter = True
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logging.debug("found Filter: %s = %s", i["name"], i["regex"])
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# Check the RegEX
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if re.search(i["regex"], data[i["dataField"]]):
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logging.debug("Filter passed: %s", i["name"])
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return True
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else:
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logging.debug("Filter not passed: %s", i["name"])
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if foundFilter:
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logging.debug("no Filter passed")
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return False
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else:
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logging.debug("no Filter found")
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return True
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except:
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logging.exception("Error in Filter checking") |