qsshsocket: Also try keys from ssh-agent and defaults

ext/qsshsocket/qsshsocket.cpp

@@ -76,6 +76,8 @@ void QSshSocket::run()
             {
                 m_session = ssh_new();
 
+                int timeout_sec = 30;
+
                 //set logging to verbose so all errors can be debugged if crash happens
                 int verbosity = SSH_LOG_NOLOG;
 
@@ -84,6 +86,7 @@ void QSshSocket::run()
                 ssh_options_set(m_session, SSH_OPTIONS_USER, m_user.toUtf8().data());
                 ssh_options_set(m_session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
                 ssh_options_set(m_session, SSH_OPTIONS_PORT, &m_port);
+                ssh_options_set(m_session, SSH_OPTIONS_TIMEOUT, &timeout_sec);
 
                 // try to connect given host, user, port
                 int connectionResponse = ssh_connect(m_session);
@@ -160,6 +163,24 @@ void QSshSocket::run()
                     error(KeyAuthenticationFailedError);
                 }
             }
+            // Just try ssh-agent and default keys
+            else if (m_user != "")
+            {
+                int rc;
+
+                rc = ssh_userauth_publickey_auto(m_session,
+                                                 m_user.toUtf8().data(),
+                                                 NULL);
+                if (rc == SSH_OK) {
+                    loginSuccessful();
+                    m_loggedIn = true;
+                } else {
+                    m_user = "";
+                    m_key = "";
+                    m_key_passphrase = "";
+                    error(KeyAuthenticationFailedError);
+                }
+            }
         }
         // if all ssh setup has been completed, check to see if we have any commands to execute
         else if (!m_currentOperation.executed)