LibGit2Sharp how to push with kerberos authentication? - kerberos

Question

I need to push branches from a Intranet application (Windows environment). Some users from one team can do this action. The Git local repository is hosted on the web server and the remote on another server. URL protocol is https and we use Kerberos authentication. I don't want the application's users enter their Windows userid and password.
So, as an initialization step, I configure the local repository according to the user:
var m_Repo = new Repository(repoFldPathName);
Configuration config = m_Repo.Config;
config.Set<string>("user.name", m_UserName);
config.Set<string>("http.sslVerify", "false");
string url = string.Format(https://{0}#my-host.fr/folder/repo_name.git, m_UserName);
Remote remote = m_Repo.Network.Remotes["origin"];
if (remote != null)
{
if (remote.Url != url)
{
m_Repo.Network.Remotes.Remove("origin");
m_Repo.Network.Remotes.Add("origin", url);
}
}
else
m_Repo.Network.Remotes.Add("origin", url);
And when it's time to push the branch "master" I prepare the push (as I seen on another post):
PushOptions options = new PushOptions();
Remote remote = m_Repo.Network.Remotes["origin"];
Branch branch = m_Repo.Branches["master"];
if (branch.Remote == null)
m_Repo.Branches.Update(branch,
b => b.Remote = remote.Name,
b => b.UpstreamBranch = branch.CanonicalName);
options.CredentialsProvider = (_url, _user, _cred) => new DefaultCredentials();
m_Repo.Network.Push(branch, options);
And after few minutes of execution, I get this exception :
LibGit2Sharp.LibGit2SharpException was unhandled by user code
HResult=-2146233088
Message=Failed to receive response: La requête doit être renvoyée
Source=LibGit2Sharp
StackTrace:
à LibGit2Sharp.Core.Ensure.HandleError(Int32 result)
à LibGit2Sharp.Core.Ensure.ZeroResult(Int32 result)
à LibGit2Sharp.Core.Proxy.git_remote_push(RemoteSafeHandle remote, IEnumerable`1 refSpecs, GitPushOptions opts, Signature signature, String reflogMessage)
à LibGit2Sharp.Network.Push(Remote remote, IEnumerable`1 pushRefSpecs, PushOptions pushOptions, Signature signature, String logMessage)
à LibGit2Sharp.Network.Push(Remote remote, String pushRefSpec, PushOptions pushOptions, Signature signature, String logMessage)
à LibGit2Sharp.NetworkExtensions.Push(Network network, IEnumerable`1 branches, PushOptions pushOptions)
à LibGit2Sharp.NetworkExtensions.Push(Network network, Branch branch, PushOptions pushOptions)
à CDM.ESD1_WSGINSTALL.Business.GitRepo.Push(brEnum brName) dans c:\PRIV\Projects\ESD1\ESD1_WSGINSTALL\ESD1_WSGINSTALL.Business\GitRepo.cs:ligne 72
à CDM.ESD1WSGINSTALL.Commands.CharteView.DoBuildRPM(String id) dans c:\PRIV\Projects\ESD1\ESD1_WSGINSTALL\ESD1_WSGINSTALL\App_Code\Commands\CharteViewActivity\CharteView.cs:ligne 262
InnerException:
Thanks for your help

Answer 1

I think the DefaultCredentials type is what you're after.
As stated by the xml documentation, it's "A credential object that will provide the "default" credentials (logged-in user information) via NTLM or SPNEGO authentication."
Settings the PushOptions.CredentialsProvider to the following should do the trick
CredentialsProvider = (_url, _user, _cred) => new DefaultCredentials()
Update
When I use Git Extensions on my Windows machine to push a branch, (git push origin master --tag) a "OpenSSH" popup claims my password
Sadly, LibGit2Sharp doesn't support SSH yet. I'd suggest you to subscribe to the open issue #852 to get notified about its progress.