1 files changed, 107 insertions, 0 deletions
diff --git a/auth/ssh.php b/auth/ssh.php
new file mode 100644
index 0000000..9d3506b
--- /dev/null
+++ b/auth/ssh.php
@@ -0,0 +1,107 @@
+<?php
+
+/*
+ * Looking Glass - An easy to deploy Looking Glass
+ * Copyright (C) 2014 Guillaume Mazoyer <gmazoyer@gravitons.in>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+ */
+
+require_once 'authentication.php';
+
+class SSH extends Authentication {
+  private $port;
+
+  public function __construct($config) {
+    parent::__construct($config);
+
+    $this->port = isset($this->config['port']) ? $this->config['port'] : 22;
+  }
+
+  protected function check_config() {
+    if ($this->config['auth'] == 'ssh-password') {
+      if (!isset($this->config['user']) || !isset($this->config['pass'])) {
+        throw new Exception('User and password required for ssh-password.');
+      }
+    }
+
+    if ($this->config['auth'] == 'ssh-key') {
+      if (!isset($this->config['user']) || !isset($this->config['public_key'])
+        || !isset($this->config['private_key'])) {
+        throw new Exception('User and key pair required for ssh-key.');
+      }
+    }
+  }
+
+  public function connect() {
+    $this->connection = ssh2_connect($this->config['host'], $this->port);
+    if (!$this->connection) {
+      throw new Exception('Cannot connect to router.');
+    }
+
+    $success = false;
+
+    if ($this->config['auth'] == 'ssh-password') {
+      $success = ssh2_auth_password($this->connection, $this->config['user'],
+        $this->config['pass']);
+    } else if ($this->config['auth'] == 'ssh-key') {
+      if (isset($this->config['pass'])) {
+        $success = ssh2_auth_pubkey_file($this->connection, $this->config['user'],
+          $this->config['public_key'], $this->config['private_key'],
+          $this->config['pass']);
+      } else {
+        $success = ssh2_auth_pubkey_file($this->connection, $this->config['user'],
+          $this->config['public_key'], $this->config['private_key']);
+      }
+    } else {
+      throw new Exception('Unknown type of connection for SSH.');
+    }
+
+    if (!success) {
+      throw new Exception('SSH authentication failed.');
+    }
+  }
+
+  public function send_command($command) {
+    if ($this->connection == null) {
+      $this->connect();
+    }
+
+    if (!($stream = ssh2_exec($this->connection, $command))) {
+      throw new Exception('SSH command failed');
+    }
+
+    stream_set_blocking($stream, true);
+
+    $data = '';
+    while ($buf = fread($stream, 4096)) {
+      $data .= $buf;
+    }
+    fclose($stream);
+
+    return $data;
+  }
+
+  public function disconnect() {
+    $this->send_command('exit');
+    $this->connection = null;
+  }
+
+  public function __destruct() {
+    parent::__destruct();
+  }
+}
+
+// End of ssh.php