def isPublishable()

in NfwSlackIntegartion/src/slack-lambda.py [0:0]

• 29 lines of code
• 14 McCabe index (conditional complexity)

def isPublishable (nfwAlert):
    # Liberal filter 
    srcCidr = os.environ['srcCidr']
    destCidr = os.environ['destCidr']

    srcCheckReqd = (len(srcCidr) != 0)
    destCheckReqd = (len(destCidr) != 0) 

    if len(srcCidr) == 0 and len(destCidr)== 0 :
        return True
    
    srcCondition = os.environ['srcCondition']
    destCondition = os.environ['destCondition']

    srcIP = nfwAlert["event"]["src_ip"]
    destIP = nfwAlert["event"]["dest_ip"]
    
    includeSrc = True
    if (srcCheckReqd):
        net = ip_network(srcCidr)
        logger.info("Check-Src:"+str (ip_address(srcIP) in net) )
        if (not (ip_address(srcIP) in net) and (srcCondition == "include")):
            includeSrc =  False
        if ( (ip_address(srcIP) in net) and (srcCondition != "include")):
            logger.info("srcCheckReqd:"+str (srcCheckReqd) )
            includeSrc = False     
      
    includeDest = True
    if (destCheckReqd):
        net = ip_network(destCidr)
        logger.info("Check-Dest:"+str (ip_address(destIP) in net) )
        if (not (ip_address(destIP) in net) and (destCondition == "include")):
            includeDest =  False
        if ( (ip_address(destIP) in net) and (destCondition != "include")):
            includeDest = False   

    return includeSrc or includeDest