tests: enable HTTP digest testing

I suppose we could spin the client side extension off to a *.py file if it gets
more use.  I was basically just looking to avoid killing the server and
relaunching it just to change authentication schemes, because that doesn't
always work on Windows.

The test changes capture the problem with py3.

tests/httpserverauth.py

@@ -85,8 +85,22 b' class digestauthserver(object):'
 
         return True
 
+digest = digestauthserver()
+
 def perform_authentication(hgweb, req, op):
     auth = req.headers.get(b'Authorization')
+
+    if req.headers.get(b'X-HgTest-AuthType') == b'Digest':
+        if not auth:
+            challenge = digest.makechallenge(b'mercurial')
+            raise common.ErrorResponse(common.HTTP_UNAUTHORIZED, b'who',
+                    [(b'WWW-Authenticate', b'Digest %s' % challenge)])
+
+        if not digest.checkauth(req, auth[7:]):
+            raise common.ErrorResponse(common.HTTP_FORBIDDEN, b'no')
+
+        return
+
     if not auth:
         raise common.ErrorResponse(common.HTTP_UNAUTHORIZED, b'who',
                 [(b'WWW-Authenticate', b'Basic Realm="mercurial"')])
@@ -96,3 +110,4 b' def perform_authentication(hgweb, req, o'
 
 def extsetup(ui):
     common.permhooks.insert(0, perform_authentication)
+    digest.adduser(b'user', b'pass', b'mercurial')

tests/test-http.t

@@ -173,7 +173,7 b' test http authentication'
   $ cd test
 
   $ hg serve --config extensions.x=$TESTDIR/httpserverauth.py -p $HGPORT2 -d \
-  >    --pid-file=pid --config server.preferuncompressed=True \
+  >    --pid-file=pid --config server.preferuncompressed=True -E ../errors2.log \
   >    --config web.push_ssl=False --config web.allow_push=* -A ../access.log
   $ cat pid >> $DAEMON_PIDS
 
@@ -209,6 +209,26 b' test http authentication'
   $ hg id http://user@localhost:$HGPORT2/
   5fed3813f7f5
 
+  $ cat > use_digests.py << EOF
+  > from mercurial import (
+  >     exthelper,
+  >     url,
+  > )
+  > 
+  > eh = exthelper.exthelper()
+  > uisetup = eh.finaluisetup
+  > 
+  > @eh.wrapfunction(url, 'opener')
+  > def urlopener(orig, *args, **kwargs):
+  >     opener = orig(*args, **kwargs)
+  >     opener.addheaders.append((r'X-HgTest-AuthType', r'Digest'))
+  >     return opener
+  > EOF
+
+  $ hg id http://localhost:$HGPORT2/ --config extensions.x=use_digests.py || true
+  abort: HTTP Error 403: bad user (py3 !)
+  5fed3813f7f5 (no-py3 !)
+
 #if no-reposimplestore
   $ hg clone http://user:pass@localhost:$HGPORT2/ dest 2>&1
   streaming all changes
@@ -362,6 +382,15 b' test http authentication'
   "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull
   "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull
   "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull
+  "GET /?cmd=capabilities HTTP/1.1" 401 - x-hgtest-authtype:Digest
+  "GET /?cmd=capabilities HTTP/1.1" 403 - x-hgtest-authtype:Digest (py3 !)
+  "GET /?cmd=capabilities HTTP/1.1" 200 - x-hgtest-authtype:Digest (no-py3 !)
+  "GET /?cmd=lookup HTTP/1.1" 401 - x-hgarg-1:key=tip x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull x-hgtest-authtype:Digest (no-py3 !)
+  "GET /?cmd=lookup HTTP/1.1" 200 - x-hgarg-1:key=tip x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull x-hgtest-authtype:Digest (no-py3 !)
+  "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=namespaces x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull x-hgtest-authtype:Digest (no-py3 !)
+  "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=namespaces x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull x-hgtest-authtype:Digest (no-py3 !)
+  "GET /?cmd=listkeys HTTP/1.1" 401 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull x-hgtest-authtype:Digest (no-py3 !)
+  "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull x-hgtest-authtype:Digest (no-py3 !)
   "GET /?cmd=capabilities HTTP/1.1" 401 - (no-reposimplestore !)
   "GET /?cmd=capabilities HTTP/1.1" 200 - (no-reposimplestore !)
   "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (no-reposimplestore !)
@@ -431,6 +460,9 b' check error log'
 
   $ cat error.log
 
+  $ cat errors2.log
+  $LOCALIP - - [$ERRDATE$] HG error:  No hash found for user/realm "b'user'/mercurial" (glob) (py3 !)
+
 check abort error reporting while pulling/cloning
 
   $ $RUNTESTDIR/killdaemons.py