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address_convert.py
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address_convert.py
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import sys
import getopt
def normalize_to_hex(address):
'''fills the missing colons and words, if the address contains zeros'''
blocks=address.split(':')
words=[]
if address.count(":") != 7:
'''Auslassungen'''
for i in range(len(blocks)):
if blocks[i] == "":#ausgelassene Stelle finden
blocks[i] ="0"
for j in range (7-address.count(":")):
blocks.insert(i,"0")
blocks = [j.zfill(4) for j in blocks]
for block in blocks:
words.append(block.strip()[0:2])
words.append(block.strip()[2:])
return words
def convert_singlehex(address):
'''coverts an ipv6 address from a : separated string to a . separated string'''
hex_octects=[]
octects=normalize_to_hex(address)
for octect in octects:
hex_octects.append(''.join([str(octect),'.']))
hex_octects=''.join(hex_octects)
#remove the last dot
return hex_octects[0:len(hex_octects)-1]
def convert_bin(address):
'''converts an ipv6 address from a : separated string to a string that represents the address in binary'''
bin_words=[]
words=normalize_to_hex(address)
for word in words:
bin_words.append(''.join([str(bin(int(word,16))[2:]).zfill(8),'.']))
bin_words=''.join(bin_words)[::]
return bin_words[0:len(bin_words)-1]
def convert_decimal(address):
'''converts an ipv6 address from a colon separated string to a string that represents the address in Decimal'''
dec_octects=[]
octects=normalize_to_hex(address)
#add the dots
for octect in octects:
dec_octects.append(''.join([str(int(octect,16)),'.']))
dec_octects=''.join(dec_octects)
#remove the last dot
return dec_octects[0:len(dec_octects)-1]
def print_address(address,prefix):
print "Got this address:",address,"/",prefix
def get_prefix(address,prefix):
bin_addr = convert_bin(address)
return bin_addr[:int(prefix)]
def get_int_identifier(address,prefix):
bin_addr = convert_bin(address)
return bin_addr[int(prefix):]
def convert_bin_to_hex(address):
return hex(int(address))[2:]
def address_info(address,prefix):
'''examins the address and displays the type of the ipv6 address, link local, eg.'''
pass
def main(argv=None):
addr=""
prefix=""
try:
opts, args = getopt.getopt(sys.argv[1:],"i:p:h")
for opt,arg in opts:
if opt == "-i":
addr= arg
if opt == "-p":
prefix= arg
except getopt.error, msg:
print msg
sys.exit(2)
if addr.count(":") > 7:
print "invalid ipv6 address"
sys.exit(2)
print_address(addr,prefix)
print "in Decimal:",convert_decimal(addr)
print "in Hex:", convert_singlehex(addr)
print "in Binary:", convert_bin(addr)
print "Praefix in Binary", get_prefix(addr,prefix)
print "Interface Identifier in Binary", get_int_identifier(addr,prefix)
if __name__ == "__main__":
main()