Introduce default credentials

Abstract Credentials, providing UsernamePasswordCredentials
and DefaultCredentials.

1 files changed, 13 insertions, 9 deletions

diff --git a/LibGit2Sharp/Credentials.cs b/LibGit2Sharp/Credentials.cs
index e3ce915c..b5540705 100644
--- a/LibGit2Sharp/Credentials.cs
+++ b/LibGit2Sharp/Credentials.cs
@@ -1,18 +1,22 @@
-namespace LibGit2Sharp
+using System;
+using LibGit2Sharp.Core;
+
+namespace LibGit2Sharp
 {
     /// <summary>
     /// Class that holds credentials for remote repository access.
     /// </summary>
-    public sealed class Credentials
+    public abstract class Credentials
     {
         /// <summary>
-        /// Username for username/password authentication (as in HTTP basic auth).
-        /// </summary>
-        public string Username { get; set; }
-
-        /// <summary>
-        /// Password for username/password authentication (as in HTTP basic auth).
+        /// Callback to acquire a credential object.
         /// </summary>
-        public string Password { get; set; }
+        /// <param name="cred">The newly created credential object.</param>
+        /// <param name="url">The resource for which we are demanding a credential.</param>
+        /// <param name="usernameFromUrl">The username that was embedded in a "user@host"</param>
+        /// <param name="types">A bitmask stating which cred types are OK to return.</param>
+        /// <param name="payload">The payload provided when specifying this callback.</param>
+        /// <returns>0 for success, &lt; 0 to indicate an error, &gt; 0 to indicate no credential was acquired.</returns>
+        protected internal abstract int GitCredentialHandler(out IntPtr cred, IntPtr url, IntPtr usernameFromUrl, GitCredentialType types, IntPtr payload);
     }
 }