Add shutdown capability (#2575)

* Add Config for showing a system shutdown/restart option

* Add a translation for Shutdown

* add a shutdown power button to the navbar

* but the shutdown icon in a navbar-txt

* set width and height of shutdown window

* Add instructions for enabling the web user to run shutdown

* add the shutdown view and actions

scripts/ZoneMinder/lib/ZoneMinder/ConfigData.pm.in

@@ -473,6 +473,18 @@ our @options = (
     type        => $types{string},
     category    => 'system',
   },
+  {
+    name        =>  'ZM_SYSTEM_SHUTDOWN',
+    default     =>  'true',
+    description =>  'Allow Admin users to power off or restart the system from the ZoneMinder UI.',
+    help        =>  'The system will need to have sudo installed and the following added to /etc/sudoers~~
+    ~~
+    @ZM_WEB_USER@ ALL=NOPASSWD: /sbin/shutdown~~
+    ~~
+      to perform the shutdown or reboot',
+    type      =>  $types{boolean},
+    category  =>  'system',
+  },
   {
     name        => 'ZM_USE_DEEP_STORAGE',
     default     => 'yes',

web/includes/actions/shutdown.php

@@ -0,0 +1,44 @@
+<?php
+//
+// ZoneMinder web action file
+// Copyright (C) 2019 ZoneMinder LLC
+//
+// 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 2
+// 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.
+//
+
+if ( !canEdit('System') ) {
+  ZM\Warning('Need System permissions to shutdown server');
+  return;
+}
+if ( $action ) {
+  $when = isset($_POST['when']) and $_POST['when'] == 'now' ? 'now' : '+1';
+  if ( $action == 'shutdown' ) {
+    $output = array();
+    $rc = 0;
+    exec("sudo -n /sbin/shutdown -P $when 2>&1", $output, $rc);
+    #exec('sudo -n /bin/systemctl poweroff -i 2>&1', $output, $rc);
+    ZM\Logger::Debug("Shutdown output $rc " . implode("\n",$output));
+    #ZM\Logger::Debug("Shutdown output " . shell_exec('/bin/systemctl poweroff -i 2>&1'));
+  } else if ( $action == 'restart' ) {
+    $output = array();
+    exec("sudo -n /sbin/shutdown -r $when 2>&1", $output);
+    #exec('sudo -n /bin/systemctl reboot -i 2>&1', $output);
+    ZM\Logger::Debug("Shutdown output " . implode("\n",$output));
+  } else if ( $action == 'cancel' ) {
+    $output = array();
+    exec('sudo /sbin/shutdown -c 2>&1', $output);
+  }
+} # end if action
+?>

web/lang/en_gb.php

@@ -693,6 +693,7 @@ $SLANG = array(
     'Settings'              => 'Settings',
     'ShowFilterWindow'      => 'Show Filter Window',
     'ShowTimeline'          => 'Show Timeline',
+    'Shutdown'              => 'Shutdown',
     'SignalCheckColour'     => 'Signal Check Colour',
     'SignalCheckPoints'     => 'Signal Check Points',
     'Size'                  => 'Size',

web/skins/classic/includes/functions.php

@@ -328,10 +328,13 @@ if (isset($_REQUEST['filter']['Query']['terms']['attr'])) {
 <?php if ( ZM_OPT_USE_AUTH and $user ) { ?>
 	<p class="navbar-text"><i class="material-icons">account_circle</i> <?php echo makePopupLink( '?view=logout', 'zmLogout', 'logout', $user['Username'], (ZM_AUTH_TYPE == "builtin") ) ?> </p>
 <?php } ?>
-
 <?php if ( canEdit('System') ) { ?>
 		<button type="button" class="btn btn-default navbar-btn" data-toggle="modal" data-target="#modalState"><?php echo $status ?></button>
-
+  <?php if ( ZM_SYSTEM_SHUTDOWN ) { ?>
+  <p class="navbar-text">
+  <?php echo makePopupLink('?view=shutdown', 'zmShutdown', 'shutdown', '<i class="material-icons md-18">power_settings_new</i></button>' ) ?>
+  </p>
+  <?php } ?>
 <?php } else if ( canView('System') ) { ?>
 		<p class="navbar-text"><?php echo $status ?></p>
 <?php } ?>

web/skins/classic/js/base.js

@@ -60,6 +60,7 @@ var popupSizes = {
   'preset':       {'width': 300, 'height': 220},
   'server':       {'width': 600, 'height': 405},
   'settings':     {'width': 220, 'height': 235},
+  'shutdown':     {'width': 400, 'height': 400},
   'state':        {'width': 400, 'height': 170},
   'stats':        {'width': 840, 'height': 200},
   'storage':      {'width': 600, 'height': 405},

web/skins/classic/views/shutdown.php

@@ -0,0 +1,69 @@
+<?php
+//
+// ZoneMinder web shutdown view file
+// Copyright (C) 2019 ZoneMinder LLC
+//
+// 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 2
+// 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.
+//
+
+if ( !canEdit('System') ) {
+  $view = 'error';
+  return;
+}
+
+$focusWindow = true;
+
+xhtmlHeaders(__FILE__, translate('Shutdown').' '.translate('Restart'));
+?>
+<body>
+  <div id="page">
+    <div id="header">
+      <h2><?php echo translate('Shutdown').' '.translate('Restart') ?></h2>
+    </div>
+    <div id="content">
+      <form name="contentForm" id="contentForm" method="post" action="?">
+        <input type="hidden" name="view" value="shutdown"/>
+<?php
+  if ( isset($output) ) {
+    echo '<p>'.implode('<br/>', $output).'</p>';
+  }
+  if ( isset($_POST['when']) and ($_POST['when'] != 'NOW') and ($action != 'cancel') ) {
+    echo '<p>You may cancel this shutdown by clicking '.translate('Cancel').'</p>';
+  }
+?>
+        <p class="warning"><h2>Warning</h2>
+          This command will either shutdown or restart all ZoneMinder Servers<br/>
+        </p>
+        <p>
+          <input type="radio" name="when" value="now" id="whennow"/><label for="whennow">Now</label>
+          <input type="radio" name="when" value="1min" id="when1min" checked="checked"/><label for="when1min">1 Minute</label>
+        </p>
+        <div id="contentButtons">
+<?php 
+  if ( isset($_POST['when']) and ($_POST['when'] != 'NOW') and ($action != 'cancel') ) {
+?>
+          <button type="submit" name="action" value="cancel"><?php echo translate('Cancel') ?></button>
+<?php 
+  }
+?>
+          <button type="submit" name="action" value="restart"><?php echo translate('Restart') ?></button>
+          <button type="submit" name="action" value="shutdown"><?php echo translate('Shutdown') ?></button>
+          <button type="button" data-on-click="closeWindow"><?php echo translate('Close') ?></button>
+        </div>
+      </form>
+    </div>
+  </div>
+</body>
+</html>