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54 lines
1.3 KiB
Python
54 lines
1.3 KiB
Python
import time
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import sha
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import random
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import binascii
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import string
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import gobject
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class GObjectSingletonMeta(gobject.GObjectMeta):
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"""GObject Singleton Metaclass"""
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def __init__(klass, name, bases, dict):
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gobject.GObjectMeta.__init__(klass, name, bases, dict)
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klass.__instance = None
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def __call__(klass, *args, **kwargs):
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if klass.__instance is None:
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klass.__instance = gobject.GObjectMeta.__call__(klass, *args, **kwargs)
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return klass.__instance
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def _stringify_sha(sha_hash):
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"""Convert binary sha1 hash data into printable characters."""
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print_sha = ""
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for char in sha_hash:
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print_sha = print_sha + binascii.b2a_hex(char)
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return print_sha
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def _sha_data(data):
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"""sha1 hash some bytes."""
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sha_hash = sha.new()
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sha_hash.update(data)
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return sha_hash.digest()
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def unique_id(data = ''):
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data_string = "%s%s%s" % (time.time(), random.randint(10000, 100000), data)
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return _stringify_sha(_sha_data(data_string))
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ACTIVITY_ID_LEN = 40
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def is_hex(s):
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return s.strip(string.hexdigits) == ''
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def validate_activity_id(actid):
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"""Validate an activity ID."""
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if type(actid) != type("") and type(actid) != type(u""):
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return False
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if len(actid) != ACTIVITY_ID_LEN:
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return False
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if not is_hex(actid):
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return False
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return True
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