private static void loadIdentity(SecureShell sch, FileInfo priv)
{
if (!priv.IsFile()) return;
try
{
sch.AddIdentity(priv.FullName);
}
catch (Exception)
{
// Instead, pretend the key doesn't exist.
}
}
private static void identities(SecureShell sch)
{
DirectoryInfo home = FS.userHome();
if (home == null)
return;
var sshdir = PathUtil.CombineDirectoryPath(home, ".ssh");
if (sshdir.IsDirectory())
{
loadIdentity(sch, PathUtil.CombineFilePath(sshdir, "identity"));
loadIdentity(sch, PathUtil.CombineFilePath(sshdir, "id_rsa"));
loadIdentity(sch, PathUtil.CombineFilePath(sshdir, "id_dsa"));
}
}
private static void knownHosts(SecureShell sch)
{
DirectoryInfo home = FS.userHome();
if (home == null)
return;
var known_hosts = new FileInfo(Path.Combine(home.ToString(), ".ssh/known_hosts"));
try
{
using (var s = new StreamReader(known_hosts.FullName))
{
sch.SetKnownHosts(s);
}
}
catch (FileNotFoundException)
{
// Oh well. They don't have a known hosts in home.
}
catch (IOException)
{
// Oh well. They don't have a known hosts in home.
}
}
/// <summary>
/// Returns the new default JSch implementation
/// </summary>
/// <returns>the new default JSch implementation</returns>
protected static SecureShell createDefaultJSch()
{
SecureShell jsch = new SecureShell();
knownHosts(jsch);
identities(jsch);
return jsch;
}
private SecureShell getDefaultJSch()
{
if (_defaultSecureShell == null)
{
_defaultSecureShell = createDefaultJSch();
foreach (object name in _defaultSecureShell.getIdentityNames())
{
_byIdentityFile.put((string)name, _defaultSecureShell);
}
}
return _defaultSecureShell;
}
/// <summary>
/// Obtain the JSch used to create new sessions.
/// </summary>
/// <param name="hc">host configuration</param>
/// <returns>the JSch instance to use.</returns>
protected SecureShell getJSch(OpenSshConfig.Host hc)
{
if (hc == null)
throw new System.ArgumentNullException("hc");
SecureShell def = getDefaultJSch();
FileInfo identityFile = hc.getIdentityFile();
if (identityFile == null)
return def;
string identityKey = identityFile.FullName;
SecureShell jsch = _byIdentityFile[identityKey];
if (jsch == null)
{
jsch = new SecureShell();
jsch.SetHostKeyRepository(def.GetHostKeyRepository());
jsch.AddIdentity(identityKey);
_byIdentityFile.Add(identityKey, jsch);
}
return jsch;
}
