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<?php
require_once('admin.php');

if ( isset($_GET['action']) ) {
if ('activate' == $_GET['action']) {
check_admin_referer('activate-plugin_' . $_GET['plugin']);
$current = get_option('active_plugins');
$plugin = trim($_GET['plugin']);
if ( validate_file($plugin) )
wp_die(__('Invalid plugin.'));
if ( ! file_exists(ABSPATH . PLUGINDIR . '/' . $plugin) )
wp_die(__('Plugin file does not exist.'));
if (!in_array($plugin, $current)) {
wp_redirect(add_query_arg('_error_nonce', wp_create_nonce('plugin-activation-error_' . $plugin), 'plugins.php?error=true&plugin=' . $plugin)); // we'll override this later if the plugin can be included without fatal error
ob_start();
@include(ABSPATH . PLUGINDIR . '/' . $plugin);
$current[] = $plugin;
sort($current);
update_option('active_plugins', $current);
do_action('activate_' . $plugin);
ob_end_clean();
}
wp_redirect('plugins.php?activate=true'); // overrides the ?error=true one above
} elseif ('error_scrape' == $_GET['action']) {
$plugin = trim($_GET['plugin']);
check_admin_referer('plugin-activation-error_' . $plugin);
if ( validate_file($plugin) )
wp_die(__('Invalid plugin.'));
if ( ! file_exists(ABSPATH . PLUGINDIR . '/' . $plugin) )
wp_die(__('Plugin file does not exist.'));
include(ABSPATH . PLUGINDIR . '/' . $plugin);
} elseif ('deactivate' == $_GET['action']) {
check_admin_referer('deactivate-plugin_' . $_GET['plugin']);
$current = get_option('active_plugins');
array_splice($current, array_search( $_GET['plugin'], $current), 1 ); // Array-fu!
update_option('active_plugins', $current);
do_action('deactivate_' . trim( $_GET['plugin'] ));
wp_redirect('plugins.php?deactivate=true');
} elseif ($_GET['action'] == 'deactivate-all') {
check_admin_referer('deactivate-all');
$current = get_option('active_plugins');

foreach ($current as $plugin) {
array_splice($current, array_search($plugin, $current), 1);
do_action('deactivate_' . $plugin);
}

update_option('active_plugins', array());
wp_redirect('plugins.php?deactivate-all=true');
}
exit;
}

$title = __('Manage Plugins');
require_once('admin-header.php');

// Clean up options
// If any plugins don't exist, axe 'em

$check_plugins = get_option('active_plugins');

// Sanity check. If the active plugin list is not an array, make it an
// empty array.
if ( !is_array($check_plugins) ) {
$check_plugins = array();
update_option('active_plugins', $check_plugins);
}

// If a plugin file does not exist, remove it from the list of active
// plugins.
foreach ($check_plugins as $check_plugin) {
if (!file_exists(ABSPATH . PLUGINDIR . '/' . $check_plugin)) {
$current = get_option('active_plugins');
$key = array_search($check_plugin, $current);
if ( false !== $key && NULL !== $key ) {
unset($current[$key]);
update_option('active_plugins', $current);
}
}
}
?>

<?php if ( isset($_GET['error']) ) : ?>
<div id="message" class="updated fade"><p><?php _e('Plugin could not be activated because it triggered a <strong>fatal error</strong>.') ?></p>
<?php
$plugin = trim($_GET['plugin']);
if ( wp_verify_nonce($_GET['_error_nonce'], 'plugin-activation-error_' . $plugin) && 1 == strtolower(ini_get('display_errors'))) { ?>
<iframe style="border:0" width="100%" height="70px" src="<?php bloginfo('wpurl'); ?>/wp-admin/plugins.php?action=error_scrape&amp;plugin=<?php echo attribute_escape($plugin); ?>&amp;_wpnonce=<?php echo attribute_escape($_GET['_error_nonce']); ?>"></iframe>
<?php
}
?>
</div>
<?php elseif ( isset($_GET['activate']) ) : ?>
<div id="message" class="updated fade"><p><?php _e('Plugin <strong>activated</strong>.') ?></p></div>
<?php elseif ( isset($_GET['deactivate']) ) : ?>
<div id="message" class="updated fade"><p><?php _e('Plugin <strong>deactivated</strong>.') ?></p></div>
<?php elseif (isset($_GET['deactivate-all'])) : ?>
<div id="message" class="updated fade"><p><?php _e('All plugins <strong>deactivated</strong>.'); ?></p></div>
<?php endif; ?>

<div class="wrap">
<h2><?php _e('Plugin Management'); ?></h2>
<p><?php _e('Plugins extend and expand the functionality of WordPress. Once a plugin is installed, you may activate it or deactivate it here.'); ?></p>
<?php

if ( get_option('active_plugins') )
$current_plugins = get_option('active_plugins');

$plugins = get_plugins();

if (empty($plugins)) {
echo '<p>';
_e("Couldn&#8217;t open plugins directory or there are no plugins available."); // TODO: make more helpful
echo '</p>';
} else {
?>
<table class="widefat plugins">
<thead>
<tr>
<th><?php _e('Plugin'); ?></th>
<th style="text-align: center"><?php _e('Version'); ?></th>
<th><?php _e('Description'); ?></th>
<th style="text-align: center"<?php if ( current_user_can('edit_plugins') ) echo ' colspan="2"'; ?>><?php _e('Action'); ?></th>
</tr>
</thead>
<?php
$style = '';

foreach($plugins as $plugin_file => $plugin_data) {
$style = ('class="alternate"' == $style|| 'class="alternate active"' == $style) ? '' : 'alternate';

if (!empty($current_plugins) && in_array($plugin_file, $current_plugins)) {
$toggle = "<a href='" . wp_nonce_url("plugins.php?action=deactivate&amp;plugin=$plugin_file", 'deactivate-plugin_' . $plugin_file) . "' title='".__('Deactivate this plugin')."' class='delete'>".__('Deactivate')."</a>";
$plugin_data['Title'] = "<strong>{$plugin_data['Title']}</strong>";
$style .= $style == 'alternate' ? ' active' : 'active';
} else {
$toggle = "<a href='" . wp_nonce_url("plugins.php?action=activate&amp;plugin=$plugin_file", 'activate-plugin_' . $plugin_file) . "' title='".__('Activate this plugin')."' class='edit'>".__('Activate')."</a>";
}

$plugins_allowedtags = array('a' => array('href' => array(),'title' => array()),'abbr' => array('title' => array()),'acronym' => array('title' => array()),'code' => array(),'em' => array(),'strong' => array());

// Sanitize all displayed data
$plugin_data['Title'] = wp_kses($plugin_data['Title'], $plugins_allowedtags);
$plugin_data['Version'] = wp_kses($plugin_data['Version'], $plugins_allowedtags);
$plugin_data['Description'] = wp_kses($plugin_data['Description'], $plugins_allowedtags);
$plugin_data['Author'] = wp_kses($plugin_data['Author'], $plugins_allowedtags);

if ( $style != '' )
$style = 'class="' . $style . '"';
if ( is_writable(ABSPATH . PLUGINDIR . '/' . $plugin_file) )
$edit = "<a href='plugin-editor.php?file=$plugin_file' title='".__('Open this file in the Plugin Editor')."' class='edit'>".__('Edit')."</a>";
else
$edit = '';

$author = ( empty($plugin_data['Author']) ) ? '' : ' <cite>' . sprintf( __('By %s'), $plugin_data['Author'] ) . '.</cite>';

echo "
<tr $style>
<td class='name'>{$plugin_data['Title']}</td>
<td class='vers'>{$plugin_data['Version']}</td>
<td class='desc'><p>{$plugin_data['Description']}$author</p></td>
<td class='togl'>$toggle</td>";
if ( current_user_can('edit_plugins') )
echo "
<td>$edit</td>";
echo"
</tr>";
do_action( 'after_plugin_row', $plugin_file );
}
?>

<tr>
<td colspan="3">&nbsp;</td>
<td colspan="2" style="width:12em;"><a href="<?php echo wp_nonce_url('plugins.php?action=deactivate-all', 'deactivate-all'); ?>" class="delete"><?php _e('Deactivate All Plugins'); ?></a></td>
</tr>

</table>
<?php
}
?>

<p><?php printf(__('If something goes wrong with a plugin and you can&#8217;t use WordPress, delete or rename that file in the <code>%s</code> directory and it will be automatically deactivated.'), PLUGINDIR); ?></p>

<h2><?php _e('Get More Plugins'); ?></h2>
<p><?php _e('You can find additional plugins for your site in the <a href="http://wordpress.org/extend/plugins/">WordPress plugin directory</a>.'); ?></p>
<p><?php printf(__('To install a plugin you generally just need to upload the plugin file into your <code>%s</code> directory. Once a plugin is uploaded, you may activate it here.'), PLUGINDIR); ?></p>

</div>

<?php
include('admin-footer.php');
?>
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