Initial stab at http authentication (basic + digest) in new http stack.

General design:
- class HttpAuth -- utility class for http-auth logic.
- class HttpAuth::ChallengeTokenizer -- parsing of www-Authenticate headers.
- class HttpAuthHandler -- base class for authentication schemes (inspired by nsIHttpAuthenticator)
- class HttpAuthHandlerBasic : HttpAuthHandler -- logic for basic auth.
- class HttpAuthHandlerDigest : HttpAuthHandler -- logic for digest auth.
- The auth integration in HttpNetworkTransaction mimics that of HttpTransactionWinHttp:
  + HttpNetworkTransaction::ApplyAuth() -- set the authorization headers.
  + HttpNetworkTransaction::PopulateAuthChallenge() -- process the challenges.

BUG=2346

Review URL: http://codereview.chromium.org/4063

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@2658 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 27 insertions, 0 deletions

diff --git a/net/http/http_auth_handler.cc b/net/http/http_auth_handler.cc
new file mode 100644
index 0000000..b0a7b97
--- /dev/null
+++ b/net/http/http_auth_handler.cc
@@ -0,0 +1,27 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/logging.h"
+#include "net/http/http_auth_handler.h"
+
+namespace net {
+
+bool HttpAuthHandler::InitFromChallenge(std::string::const_iterator begin,
+                                        std::string::const_iterator end,
+                                        HttpAuth::Target target) {
+  target_ = target;
+  score_ = -1;
+  scheme_ = NULL;
+
+  bool ok = Init(begin, end);
+
+  // Init() is expected to set the scheme, realm, and score.
+  DCHECK(!ok || !scheme().empty());
+  DCHECK(!ok || !realm().empty());
+  DCHECK(!ok || score_ != -1);
+  
+  return ok;
+}
+
+} // namespace net