(thing) by Hexice Sun Apr 08 2007 at 15:08:27 
The source code for a Python program (The language not the snake.)  that will fetch the
dotted decimal IP address of a website of your choice and convert it in to a valid 32 bit  
one as show in the other write-ups. You will need Python and the module found at  
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/111286 to get it to run. I hope you
 find this useful (This may not be the best way to do it Im still learning python. :-)

There may be are formatting errors sorry about that, Im new to Everything. 





#Written by Hexice hectorDOTdearmanATgoogleDotcom

#Note nslookup 

#Note http://everything2.com/index.pl?node=IP%20address

#Note http://everything2.com/index.pl?node_id=951857&lastnode_id=0


#For converting from decimal to binary and back.

import BaseConvert

#For geting the IP address.

from socket import gethostbyname



#The help text.

DotDecto32bithelp = """                This was written mainly to see if I could however

                it does have a practical application, it converts

                dotted decimal IP address's (64.233.183.103) in

                to 32-bit decimal format (1089058663) which can

                be used as a valid internet address (In this case Google).



                The main reason you would want to do this would

                be to get past censorship programs on school,

                library or workplace computers.



                For more information

                go to http://everything2.com/index.pl?node=IP%20address

                or http://everything2.com/index.pl?node_id=951857&lastnode_id=0



                Im am indebted to Drew Perttula for creating the 

                module BaseConvert (which funnily enough is used to

                covert between bases.)



                Note: If you wish to find out the IP address of

                a website on a windows operating system go to

                start > all programs > Accessories > Command prompt

                then type: nslookup [web site who’s IP address you want]



                The program will now print out the Google 32-bit

                address run it again to find a diffrent 32-bit

                address, I hope this program is usefull to you.

                By Hexice hectorDOTdearmanATgoogleDotcom



                Update: this program will now (attempt) to fetch the

                IP address from a website you give it, be warned however

                this is far from stable.

                """





#Variables, shown here for clarity. 

webaddress = 'www.google.com'

RawIPaddress = '000.000.000.000'

IPaddress = ['000','000','000','000']

IPaddressRawbinary = ['00000000','00000000','00000000','00000000']

IPaddressbinary = ['00000000','00000000','00000000','00000000']

IPaddressbinarystring = '00000000000000000000000000000000'

DecimalIPaddress = '0000000000'

error = ''



#Print the intro and ask for the web address

print 'This program will find the 32 bit address for a website.'

print 'Input a website below or type help for help or type IP,'

print 'if you wish to cut to the chase and input an IP address'

print 'you all ready know.'

print

webaddress = raw_input('>')



if webaddress == 'IP':

    #Ask for the dotted decimal IP address.

    print "Please input IP address (Dotted decimal form.) or type help for help"

    RawIPaddress = raw_input('>')



elif webaddress == 'help':

    print DotDecto32bithelp

    # The Google IP address, the rest of the program will now execute.

    RawIPaddress = '64.233.183.103'



else:

    #Gets the IP address.

    RawIPaddress = gethostbyname(webaddress)





#Print the help if thats what the user asked for.

if RawIPaddress == 'help':

    print DotDecto32bithelp



    # The Google IP address, the rest of the program will now execute.

    RawIPaddress = '64.233.183.103'



elif RawIPaddress == 'this':

    print

    import this

    print

    RawIPaddress = '64.233.183.103'



else:

    pass



#Split the IP address into component parts.

IPaddress = RawIPaddress.rsplit('.')



#Convert the decimal numbers to binary.

try:

    IPaddressRawbinary[0] = BaseConvert.baseconvert(IPaddress[0],BaseConvert.BASE10,BaseConvert.BASE2)

    IPaddressRawbinary[1] = BaseConvert.baseconvert(IPaddress[1],BaseConvert.BASE10,BaseConvert.BASE2)

    IPaddressRawbinary[2] = BaseConvert.baseconvert(IPaddress[2],BaseConvert.BASE10,BaseConvert.BASE2)

    IPaddressRawbinary[3] = BaseConvert.baseconvert(IPaddress[3],BaseConvert.BASE10,BaseConvert.BASE2)



#See if an index error has occurred.

except IndexError:

    #If there is an error tell the user.

    print  'An Index Error has occurred,'

    print  'you must input a IP address in dotted decimal form (i.e 64.233.183.103).'



    #Create a second error massage that will be printed out when we get to displaying the address.

    error = '[Index Error (see above)]'



#See if an value error has occurred.

except ValueError:

    #If there is an error tell the user.

    print  'A ValueError has occurred,'

    print  'you must input a IP address in dotted decimal form (i.e 64.233.183.103).'



    #Create an error massage that will be printed out when we get to displaying the address.

    error = '[ValueError (see above)]'





else:

    pass



#Pad out the binary with extra zeros so that every number is 8 digits long.

IPaddressbinary[0] = IPaddressRawbinary[0].zfill(8)

IPaddressbinary[1] = IPaddressRawbinary[1].zfill(8)

IPaddressbinary[2] = IPaddressRawbinary[2].zfill(8)

IPaddressbinary[3] = IPaddressRawbinary[3].zfill(8)



#Create a single string out of the binary IP address's.

IPaddressbinarystring = IPaddressbinary[0] + IPaddressbinary[1] + IPaddressbinary[2] + IPaddressbinary[3]



#Convert back to decimal.

DecimalIPaddress = BaseConvert.baseconvert(IPaddressbinarystring,BaseConvert.BASE2,BaseConvert.BASE10)



#Display the converted address and the error message (If there is one.).

print 'http://' + DecimalIPaddress + error
I like it!