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executable file 53 lines (48 sloc) 2.01 KB
#!/usr/bin/python3
import json, hashlib, base64, time
import sys
from webViews.log import logger
# generate cookie :
# name = 'leebaok'
# |
# { "name":"leebaok", "login-time":time} Secure-Key
# | |
# | json.dumps |
# | |
# '{ "name":"leebaok", "login-time":time}' ______________|
# | | concat
# | encode('ascii') -> base64 | encode('ascii') -> md5().hexdigest()
# | str(*, encoding='utf-8') |
# | |
# < XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX >.< XXXXXXXXXXXXXXXXXXXX >
#
def generate_cookie(name, securekey):
#print (">> generate cookie for %s" % name)
content = { 'name':name, 'login-time': time.asctime() }
text = json.dumps(content)
part1 = base64.b64encode(text.encode('ascii'))
part2 = hashlib.md5( (text+securekey).encode('ascii') ).hexdigest()
# part1 is binary(ascii) and part2 is str(utf-8)
cookie = str(part1, encoding='utf-8') +"."+ part2
#print ("cookie : %s" % cookie)
return cookie
def parse_cookie(cookie, securekey):
logger.info (">> parse cookie : %s" % cookie)
parts = cookie.split('.')
part1 = parts[0]
part2 = '' if len(parts) < 2 else parts[1]
try:
text = str(base64.b64decode(part1.encode('ascii')), encoding='utf-8')
except:
logger.info ("decode cookie failed")
return None
logger.info ("cookie content : %s" % text)
thatpart2 = hashlib.md5((text+securekey).encode('ascii')).hexdigest()
logger.info ("hash from part1 : %s" % thatpart2)
logger.info ("hash from part2 : %s" % part2)
if part2 == thatpart2:
result = json.loads(text)['name']
else:
result = None
logger.info ("parse from cookie : %s" % result)
return result
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