Adding HTTP Digest Auth (but not yet enabled)

contrib/epee/include/net/http_auth.h

@@ -0,0 +1,81 @@
+// Copyright (c) 2014-2016, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#pragma once
+
+#include <boost/optional/optional.hpp>
+#include <cstdint>
+#include "http_base.h"
+#include <string>
+#include <utility>
+
+namespace epee
+{
+namespace net_utils
+{
+  namespace http
+  {
+    //! Implements RFC 2617 digest auth. Digests from RFC 7616 can be added.
+    class http_auth
+    {
+    public:
+      struct login
+      {
+        login() = delete;
+        std::string username;
+        std::string password;
+      };
+
+      struct session
+      {
+        session() = delete;
+        const login credentials;
+        std::string nonce;
+        std::uint32_t counter;
+      };
+
+      http_auth() : user() {}
+      http_auth(login credentials);
+
+      //! \return Auth response, or `boost::none` iff `request` had valid auth.
+      boost::optional<http_response_info> get_response(const http_request_info& request)
+      {
+        if (user)
+        {
+          return process(request);
+        }
+        return boost::none;
+      }
+
+    private:
+      boost::optional<http_response_info> process(const http_request_info& request);
+
+      boost::optional<session> user;
+    };
+  }
+}
+}