[CalendarServer-changes] [10125] CalendarServer/trunk

source_changes at macosforge.org source_changes at macosforge.org
Tue Dec 4 14:07:43 PST 2012


Revision: 10125
          http://trac.calendarserver.org//changeset/10125
Author:   sagen at apple.com
Date:     2012-12-04 14:07:43 -0800 (Tue, 04 Dec 2012)
Log Message:
-----------
Adds the ability to automatically disable Basic auth for non-SSL requests

Modified Paths:
--------------
    CalendarServer/trunk/calendarserver/tap/util.py
    CalendarServer/trunk/conf/caldavd-apple.plist
    CalendarServer/trunk/conf/caldavd-test.plist
    CalendarServer/trunk/contrib/migration/calendarcommonextra.py
    CalendarServer/trunk/contrib/migration/test/test_commonextra.py
    CalendarServer/trunk/twext/web2/dav/auth.py
    CalendarServer/trunk/twistedcaldav/resource.py
    CalendarServer/trunk/twistedcaldav/stdconfig.py

Added Paths:
-----------
    CalendarServer/trunk/twext/web2/dav/test/test_auth.py

Modified: CalendarServer/trunk/calendarserver/tap/util.py
===================================================================
--- CalendarServer/trunk/calendarserver/tap/util.py	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/calendarserver/tap/util.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -688,6 +688,7 @@
         credentialFactories,
         (auth.IPrincipal,),
         overrides=overrides,
+        allowBasicOverNonSSL=config.Authentication.Basic.AllowedOverNonSSL,
     )
 
     logWrapper = DirectoryLogWrapperResource(

Modified: CalendarServer/trunk/conf/caldavd-apple.plist
===================================================================
--- CalendarServer/trunk/conf/caldavd-apple.plist	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/conf/caldavd-apple.plist	2012-12-04 22:07:43 UTC (rev 10125)
@@ -242,6 +242,8 @@
       <key>Basic</key>
       <dict>
         <key>Enabled</key>
+        <true/>
+        <key>AllowedOverNonSSL</key>
         <false/>
       </dict>
 

Modified: CalendarServer/trunk/conf/caldavd-test.plist
===================================================================
--- CalendarServer/trunk/conf/caldavd-test.plist	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/conf/caldavd-test.plist	2012-12-04 22:07:43 UTC (rev 10125)
@@ -507,6 +507,8 @@
       <dict>
         <key>Enabled</key>
         <true/>
+        <key>AllowedOverNonSSL</key>
+        <true/>
       </dict>
 
       <!-- Digest challenge/response -->

Modified: CalendarServer/trunk/contrib/migration/calendarcommonextra.py
===================================================================
--- CalendarServer/trunk/contrib/migration/calendarcommonextra.py	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/contrib/migration/calendarcommonextra.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -146,6 +146,7 @@
 
     settings["EnableSSL"] = True
     settings["RedirectHTTPToHTTPS"] = True
+    settings.setdefault("Authentication", {}).setdefault("Basic", {})["Enabled"] = True
 
 def setCert(plistPath, otherCert):
     """

Modified: CalendarServer/trunk/contrib/migration/test/test_commonextra.py
===================================================================
--- CalendarServer/trunk/contrib/migration/test/test_commonextra.py	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/contrib/migration/test/test_commonextra.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -34,6 +34,7 @@
         orig = {
         }
         expected = {
+            'Authentication': {'Basic': {'Enabled': True}},
             'EnableSSL': True,
             'RedirectHTTPToHTTPS': True,
             'SSLAuthorityChain': '/test/pchain.pem',

Modified: CalendarServer/trunk/twext/web2/dav/auth.py
===================================================================
--- CalendarServer/trunk/twext/web2/dav/auth.py	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/twext/web2/dav/auth.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -37,7 +37,8 @@
 
 
 class AuthenticationWrapper(WrapperResource):
-    def __init__(self, resource, portal, credentialFactories, loginInterfaces):
+    def __init__(self, resource, portal, credentialFactories, loginInterfaces,
+        allowBasicOverNonSSL=False):
         """
         Wrap the given resource and use the parameters to set up the request
         to allow anyone to challenge and handle authentication.
@@ -48,20 +49,34 @@
         @param credentialFactories: Sequence of credentialFactories that can
             be used to authenticate by resources in this tree.
         @param loginInterfaces: More cred stuff
+        @param allowBasicOverNonSSL: Should we advertise Basic over non SSL
+            connections?
+        @type allowBasicOverNonSSL: C{bool}
         """
         super(AuthenticationWrapper, self).__init__(resource)
 
         self.portal = portal
         self.credentialFactories = dict([(factory.scheme, factory)
                                          for factory in credentialFactories])
+        self.secureCredentialFactories = dict([(factory.scheme, factory)
+                                         for factory in credentialFactories
+                                         if factory.scheme != "basic"])
         self.loginInterfaces = loginInterfaces
+        self.allowBasicOverNonSSL = allowBasicOverNonSSL
 
     def hook(self, req):
         req.portal = self.portal
-        req.credentialFactories = self.credentialFactories
         req.loginInterfaces = self.loginInterfaces
 
+        # If not using SSL, use the factory list which excludes "Basic"
+        if req.chanRequest is None: # This is only None in unit tests
+            secureConnection = True
+        else:
+            ignored, secureConnection = req.chanRequest.getHostInfo()
+        req.credentialFactories = (self.credentialFactories if secureConnection or
+            self.allowBasicOverNonSSL else self.secureCredentialFactories)
 
+
 class IPrincipal(Interface):
     pass
 

Added: CalendarServer/trunk/twext/web2/dav/test/test_auth.py
===================================================================
--- CalendarServer/trunk/twext/web2/dav/test/test_auth.py	                        (rev 0)
+++ CalendarServer/trunk/twext/web2/dav/test/test_auth.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -0,0 +1,100 @@
+##
+# Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+# DRI: Wilfredo Sanchez, wsanchez at apple.com
+##
+
+import collections
+from twext.web2.dav.auth import AuthenticationWrapper
+import twext.web2.dav.test.util
+
+class AutoWrapperTestCase(twext.web2.dav.test.util.TestCase):
+
+    def test_basicAuthPrevention(self):
+
+        FakeFactory = collections.namedtuple("FakeFactory", ("scheme,"))
+        factories = [FakeFactory("basic"), FakeFactory("digest"), FakeFactory("xyzzy")]
+
+        class FakeChannel(object):
+            def __init__(self, secure):
+                self.secure = secure
+            def getHostInfo(self):
+                return "ignored", self.secure
+
+        class FakeRequest(object):
+            def __init__(self, secure):
+                self.portal = None
+                self.loginInterfaces = None
+                self.credentialFactories = None
+                self.chanRequest = FakeChannel(secure)
+
+        #
+        # allowBasicOverNonSSL=True
+        #
+        wrapper = AuthenticationWrapper(None, None, factories, None, allowBasicOverNonSSL=True)
+        req = FakeRequest(True) # Connection is over SSL
+        wrapper.hook(req)
+        self.assertEquals(
+            set(req.credentialFactories.keys()),
+            set(["basic", "digest", "xyzzy"])
+        )
+        req = FakeRequest(False) # Connection is not over SSL
+        wrapper.hook(req)
+        self.assertEquals(
+            set(req.credentialFactories.keys()),
+            set(["basic", "digest", "xyzzy"])
+        )
+
+        #
+        # allowBasicOverNonSSL=False
+        #
+        wrapper = AuthenticationWrapper(None, None, factories, None, allowBasicOverNonSSL=False)
+        req = FakeRequest(True) # Connection is over SSL
+        wrapper.hook(req)
+        self.assertEquals(
+            set(req.credentialFactories.keys()),
+            set(["basic", "digest", "xyzzy"])
+        )
+        req = FakeRequest(False) # Connection is not over SSL
+        wrapper.hook(req)
+        self.assertEquals(
+            set(req.credentialFactories.keys()),
+            set(["digest", "xyzzy"]) # Basic auth is *not* advertised
+        )
+
+        #
+        # Also make sure things still work if basic was not enabled to begin with
+        #
+        factories = [FakeFactory("digest"), FakeFactory("xyzzy")]
+        wrapper = AuthenticationWrapper(None, None, factories, None, allowBasicOverNonSSL=False)
+        req = FakeRequest(True) # Connection is over SSL
+        wrapper.hook(req)
+        self.assertEquals(
+            set(req.credentialFactories.keys()),
+            set(["digest", "xyzzy"])
+        )
+        req = FakeRequest(False) # Connection is not over SSL
+        wrapper.hook(req)
+        self.assertEquals(
+            set(req.credentialFactories.keys()),
+            set(["digest", "xyzzy"])
+        )
+

Modified: CalendarServer/trunk/twistedcaldav/resource.py
===================================================================
--- CalendarServer/trunk/twistedcaldav/resource.py	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/twistedcaldav/resource.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -3024,10 +3024,10 @@
         credentialFactories on a per-resource-path basis """
 
     def __init__(self, resource, portal, credentialFactories, loginInterfaces,
-        overrides=None):
+        overrides=None, allowBasicOverNonSSL=False):
 
         super(AuthenticationWrapper, self).__init__(resource, portal,
-            credentialFactories, loginInterfaces)
+            credentialFactories, loginInterfaces, allowBasicOverNonSSL=allowBasicOverNonSSL)
 
         self.overrides = {}
         if overrides:
@@ -3043,7 +3043,7 @@
         super(AuthenticationWrapper, self).hook(req)
 
         factories = self.overrides.get(req.path.rstrip("/"),
-            self.credentialFactories)
+            req.credentialFactories)
         req.credentialFactories = factories
 
 

Modified: CalendarServer/trunk/twistedcaldav/stdconfig.py
===================================================================
--- CalendarServer/trunk/twistedcaldav/stdconfig.py	2012-12-04 19:59:16 UTC (rev 10124)
+++ CalendarServer/trunk/twistedcaldav/stdconfig.py	2012-12-04 22:07:43 UTC (rev 10125)
@@ -406,7 +406,10 @@
     # Authentication
     #
     "Authentication": {
-        "Basic": { "Enabled": False }, # Clear text; best avoided
+        "Basic": {                         # Clear text; best avoided
+            "Enabled": False,
+            "AllowedOverNonSSL": False,
+        },
         "Digest": {                        # Digest challenge/response
             "Enabled": True,
             "Algorithm": "md5",
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