[PATCH stable] url: fix UnicodeDecodeError on certificate verification error

[Yuya Nishihara]

# HG changeset patch
# User Yuya Nishihara <yuya at tcha.org>
# Date 1294159970 -32400
# Branch stable
# Node ID 54d034f4f5092649db64c4cb51af62322a2aca93
# Parent  5d1bb1174047030036fcca00004573fc9f2c0713
url: fix UnicodeDecodeError on certificate verification error

SSLSockect.getpeercert() returns tuple containing unicodes for 'subject'.

diff --git a/mercurial/url.py b/mercurial/url.py
--- a/mercurial/url.py
+++ b/mercurial/url.py
@@ -10,7 +10,7 @@
 import urllib, urllib2, urlparse, httplib, os, re, socket, cStringIO
 import __builtin__
 from i18n import _
-import keepalive, util
+import keepalive, util, encoding
 
 def _urlunparse(scheme, netloc, path, params, query, fragment, url):
     '''Handle cases where urlunparse(urlparse(x://)) doesn't preserve the "//"'''
@@ -498,7 +498,7 @@ def _verifycert(cert, hostname):
     for s in cert.get('subject', []):
         key, value = s[0]
         if key == 'commonName':
-            certname = value.lower()
+            certname = value.lower().encode(encoding.encoding, 'replace')
             if (certname == dnsname or
                 '.' in dnsname and certname == '*.' + dnsname.split('.', 1)[1]):
                 return None