Revision: 306
http://fclient.svn.sourceforge.net/fclient/?rev=306&view=rev
Author: jurner
Date: 2008-03-04 09:37:20 -0800 (Tue, 04 Mar 2008)
Log Message:
-----------
no longer needed, use key.py instead
Removed Paths:
-------------
trunk/sandbox/fcp2/uri.py
Deleted: trunk/sandbox/fcp2/uri.py
===================================================================
--- trunk/sandbox/fcp2/uri.py 2008-03-04 17:36:51 UTC (rev 305)
+++ trunk/sandbox/fcp2/uri.py 2008-03-04 17:37:20 UTC (rev 306)
@@ -1,131 +0,0 @@
-"""Freennet Client Protocol uri and related methods"""
-
-import os, sys
-import base64
-import re
-import urlparse
-
-#--> rel import hack
-class _RelImportHack(object):
- def __init__(self, n):
- fpath = os.path.abspath(__file__)
- for i in xrange(n): fpath = os.path.dirname(fpath)
- sys.path.insert(0, fpath)
- def __del__(self): sys.path.pop(0)
-hack = _RelImportHack(2)
-
-from fcp2 import consts
-
-
-del hack
-#<-- rel import hack
-
-#**************************************************************************************
-# freenet base64 for keys
-#**************************************************************************************
-def base64UrlsaveDecode(string):
- """Decodes a base64 urlsave encoded string as encoded by freenet
- @param string: string to decode
- @return: decoded string
-
- @raise TypeError: if the string can not be decoded
- @note: this function handles non-standard encoding as used by freenet (see: freenet/src/support/base64.java)
- """
- # freenet uses - for + and ~ for /
- altchars = '-~'
-
- # padding may be ommitted or not
- padding = 4 - len(string) % 4
- if padding:
- string += '=' * padding
- return base64.b64decode(string, altchars)
-
-#****************************************************************************************
-# freenet keys
-#
-# KeyType@32 bytes hash, 32 bytes encryption key, 5 bytes extra
-#
-# all byte components are base64 encoded. Freenet uses base64 without padding
-# along with the following altchars for urlsave encode: - for + and ~ for /
-# see: freenet/support/base64.java
-#
-# so a key as the user gets it to see is:
-# KeyType@43 bytes, 43 bytes, 7 bytes ..of [A-Za-z0-9\-~]
-#
-# see: [freenet/src/support/base64.java]
-#
-#***************************************************************************************
-KeyPat = re.compile(
-r'''
-^(CHK@ | SSK@ | SVK@ | USK@)
-(
- [a-z0-9\-~]{43},
- [a-z0-9\-~]{43},
- [a-z0-9\-~]{7}
-)
-''', re.I | re.X) #TODO: ignorecase?
-
-
-def keyType(uri):
- """Returns the ky type of a freenet key or None if the type could not be determined"""
- if uri.startswith(consts.KeyType.KSK):
- return consts.KeyType.KSK
- result = KeyPat.match(uri)
- if result is None:
- return None
- return result.group(1)
-
-#*********************************************************************
-#
-#*********************************************************************
-def stripUri(uri):
- """Strips scheme and location parts from an uri"""
- result = urlparse.urlsplit(uri)[2]
- result = result.lstrip('/')
- return result
-
-
-class Uri(object):
- """Class wrappinf a freenet Uri
-
- @ivar keyType: L{consts.KeyType} of the uri
- @ivar uri: (str) uri contained in the instance
- """
-
- KeyType = consts.KeyType
-
-
- def __init__(self, uri):
- """
- @param uri: (str) freenet uri (may be an uri like http://..CHK@ or
- freenet:CHK@ or whatever or a a freenet key)
- """
- self.uri = stripUri(uri)
- result = keyType(self.uri)
- self.keyType = self.KeyType.Invalid if result is None else result
-
-
- def __nonzero__(self):
- """Checks if the uri contained in the instance is a vaild freenet uri"""
- return self.keyType != self.KeyType.Invalid
-
-
- def split(self):
- """Splits the uri
- @return: tuple(freenet-key, file-name)
- """
- if self.keyType != self.KeyType.Invalid:
- head, sep, tail = self.uri.partition('/')
- return head, tail
- return self.uri, ''
-
-
- def fileName(self):
- """Returns the filename part of the uri
- @return: str
- """
- head, tail = self.split()
- if tail:
- return tail
- return ''
-
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