[tor-commits] [bridgedb/master] Add base64 padding to networkstatus 'descDigest' field.

[isis at torproject.org]

commit 74a63e2e814a406db22e8c09aa0a4d038d9ce2b8
Author: Isis Lovecruft <isis at torproject.org>
Date:   Wed Dec 11 01:01:16 2013 +0000

    Add base64 padding to networkstatus 'descDigest' field.
    
    The trailing '='s in the "descriptor digest" field of an
    `@type-bridge-networkstatus` descriptor are removed before placing them
    in the descriptor. Therefore, before un-base64-encoding this field, we
    must re-add the trailing '='s character padding back in, the same as we
    already to for the "identity digest" field on that same descriptor line.
    
     * FIXES a bug in function `bridgedb.parse.networkstatus.parseRLine()`
       which resulted in the "descriptor digest" field (and all fields after
       it on the 'r'-line) being set to `None`, due to a base64 decoding
       error from missing '=' character padding.
---
 lib/bridgedb/parse/networkstatus.py |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/bridgedb/parse/networkstatus.py b/lib/bridgedb/parse/networkstatus.py
index 293fdd0..7fd9e18 100644
--- a/lib/bridgedb/parse/networkstatus.py
+++ b/lib/bridgedb/parse/networkstatus.py
@@ -128,7 +128,8 @@ def parseRLine(line):
         ID = None
     else:
         try:
-            descDigest = binascii.a2b_base64(fields[2])
+            paddedDigest = padBase64(fields[2])
+            descDigest = binascii.b2a_base64(paddedDigest)
             timestamp = time.mktime(time.strptime(" ".join(fields[3:5]),
                                                   "%Y-%m-%d %H:%M:%S"))
             ORaddr = fields[5]