<?php

/**

 * Edit plugin editor administration panel.

 *

 * @package WordPress

 * @subpackage Administration

 */

/** WordPress Administration Bootstrap */

require_once('admin.php');

if ( !current_user_can('edit_plugins') )

	wp_die('<p>'.__('You do not have sufficient permissions to edit plugins for this blog.').'</p>');

$title = __("Edit Plugins");

$parent_file = 'plugins.php';

wp_reset_vars(array('action', 'redirect', 'profile', 'error', 'warning', 'a', 'file', 'plugin'));

wp_admin_css( 'theme-editor' );

$plugins = get_plugins();

if ( isset($_REQUEST['file']) )

	$plugin = stripslashes($_REQUEST['file']);

if ( empty($plugin) ) {

	$plugin = array_keys($plugins);

	$plugin = $plugin[0];

}

$plugin_files = get_plugin_files($plugin);

if ( empty($file) )

	$file = $plugin_files[0];

else

	$file = stripslashes($file);

$file = validate_file_to_edit($file, $plugin_files);

$real_file = WP_PLUGIN_DIR . '/' . $file;

$scrollto = isset($_REQUEST['scrollto']) ? (int) $_REQUEST['scrollto'] : 0;

switch ( $action ) {

case 'update':

	check_admin_referer('edit-plugin_' . $file);

	$newcontent = stripslashes($_POST['newcontent']);

	if ( is_writeable($real_file) ) {

		$f = fopen($real_file, 'w+');

		fwrite($f, $newcontent);

		fclose($f);

		// Deactivate so we can test it.

		if ( is_plugin_active($file) || isset($_POST['phperror']) ) {

			if ( is_plugin_active($file) )

				deactivate_plugins($file, true);

			wp_redirect(add_query_arg('_wpnonce', wp_create_nonce('edit-plugin-test_' . $file), "plugin-editor.php?file=$file&liveupdate=1&scrollto=$scrollto"));

			exit;

		}

		wp_redirect("plugin-editor.php?file=$file&a=te&scrollto=$scrollto");

	} else {

		wp_redirect("plugin-editor.php?file=$file&scrollto=$scrollto");

	}

	exit;

break;

default:

	if ( isset($_GET['liveupdate']) ) {

		check_admin_referer('edit-plugin-test_' . $file);

		$error = validate_plugin($file);

		if ( is_wp_error($error) )

			wp_die( $error );

		if ( ! is_plugin_active($file) )

			activate_plugin($file, "plugin-editor.php?file=$file&phperror=1"); // we'll override this later if the plugin can be included without fatal error

		wp_redirect("plugin-editor.php?file=$file&a=te&scrollto=$scrollto");

		exit;

	}

	// List of allowable extensions

	$editable_extensions = array('php', 'txt', 'text', 'js', 'css', 'html', 'htm', 'xml', 'inc', 'include');

	$editable_extensions = (array) apply_filters('editable_extensions', $editable_extensions);

	if ( ! is_file($real_file) ) {

		wp_die(sprintf('<p>%s</p>', __('No such file exists! Double check the name and try again.')));

	} else {

		// Get the extension of the file

		if ( preg_match('/\.([^.]+)$/', $real_file, $matches) ) {

			$ext = strtolower($matches[1]);

			// If extension is not in the acceptable list, skip it

			if ( !in_array( $ext, $editable_extensions) )

				wp_die(sprintf('<p>%s</p>', __('Files of this type are not editable.')));

		}

	}

	require_once('admin-header.php');

	update_recently_edited(WP_PLUGIN_DIR . '/' . $file);

	$content = file_get_contents( $real_file );

	if ( '.php' == substr( $real_file, strrpos( $real_file, '.' ) ) ) {

		$functions = wp_doc_link_parse( $content );

		if ( !empty($functions) ) {

			$docs_select = '<select name="docs-list" id="docs-list">';

			$docs_select .= '<option value="">' . __( 'Function Name...' ) . '</option>';

			foreach ( $functions as $function) {

				$docs_select .= '<option value="' . esc_attr( $function ) . '">' . htmlspecialchars( $function ) . '()</option>';

			}

			$docs_select .= '</select>';

		}

	}

	$content = htmlspecialchars( $content );

	$codepress_lang = codepress_get_lang($real_file);

	?>

<?php if (isset($_GET['a'])) : ?>

 <div id="message" class="updated fade"><p><?php _e('File edited successfully.') ?></p></div>

<?php elseif (isset($_GET['phperror'])) : ?>

 <div id="message" class="updated fade"><p><?php _e('This plugin has been deactivated because your changes resulted in a <strong>fatal error</strong>.') ?></p>

	<?php

		if ( wp_verify_nonce($_GET['_error_nonce'], 'plugin-activation-error_' . $file) ) { ?>

	<iframe style="border:0" width="100%" height="70px" src="<?php bloginfo('wpurl'); ?>/wp-admin/plugins.php?action=error_scrape&amp;plugin=<?php echo esc_attr($file); ?>&amp;_wpnonce=<?php echo esc_attr($_GET['_error_nonce']); ?>"></iframe>

	<?php } ?>

</div>

<?php endif; ?>

<div class="wrap">

<?php screen_icon(); ?>

<h2><?php echo esc_html( $title ); ?></h2>

<div class="fileedit-sub">

<div class="alignleft">

<big><?php

	if ( is_plugin_active($plugin) ) {

		if ( is_writeable($real_file) )

			echo sprintf(__('Editing <strong>%s</strong> (active)'), $file);

		else

			echo sprintf(__('Browsing <strong>%s</strong> (active)'), $file);

	} else {

		if ( is_writeable($real_file) )

			echo sprintf(__('Editing <strong>%s</strong> (inactive)'), $file);

		else

			echo sprintf(__('Browsing <strong>%s</strong> (inactive)'), $file);

	}

	?></big>

</div>

<div class="alignright">

	<form action="plugin-editor.php" method="post">

		<strong><label for="plugin"><?php _e('Select plugin to edit:'); ?> </label></strong>

		<select name="plugin" id="plugin">

<?php

	foreach ( $plugins as $plugin_key => $a_plugin ) {

		$plugin_name = $a_plugin['Name'];

		if ( $plugin_key == $plugin )

			$selected = " selected='selected'";

		else

			$selected = '';

		$plugin_name = esc_attr($plugin_name);

		$plugin_key = esc_attr($plugin_key);

		echo "\n\t<option value=\"$plugin_key\" $selected>$plugin_name</option>";

	}

?>

		</select>

		<input type="submit" name="Submit" value="<?php esc_attr_e('Select') ?>" class="button" />

	</form>

</div>

<br class="clear" />

</div>

<div id="templateside">

	<h3><?php _e('Plugin Files'); ?></h3>

	<ul>

<?php

foreach ( $plugin_files as $plugin_file ) :

	// Get the extension of the file

	if ( preg_match('/\.([^.]+)$/', $plugin_file, $matches) ) {

		$ext = strtolower($matches[1]);

		// If extension is not in the acceptable list, skip it

		if ( !in_array( $ext, $editable_extensions ) )

			continue;

	} else {

		// No extension found

		continue;

	}

?>

		<li<?php echo $file == $plugin_file ? ' class="highlight"' : ''; ?>><a href="plugin-editor.php?file=<?php echo $plugin_file; ?>&amp;plugin=<?php echo $plugin; ?>"><?php echo $plugin_file ?></a></li>

<?php endforeach; ?>

	</ul>

</div>

<form name="template" id="template" action="plugin-editor.php" method="post">

	<?php wp_nonce_field('edit-plugin_' . $file) ?>

		<div><textarea cols="70" rows="25" name="newcontent" id="newcontent" tabindex="1" class="codepress <?php echo $codepress_lang ?>"><?php echo $content ?></textarea>

		<input type="hidden" name="action" value="update" />

		<input type="hidden" name="file" value="<?php echo esc_attr($file) ?>" />

		<input type="hidden" name="plugin" value="<?php echo esc_attr($plugin) ?>" />

		<input type="hidden" name="scrollto" id="scrollto" value="<?php echo $scrollto; ?>" />

		</div>

		<?php if ( !empty( $docs_select ) ) : ?>

		<div id="documentation"><label for="docs-list"><?php _e('Documentation:') ?></label> <?php echo $docs_select ?> <input type="button" class="button" value="<?php esc_attr_e( 'Lookup' ) ?> " onclick="if ( '' != jQuery('#docs-list').val() ) { window.open( 'http://api.wordpress.org/core/handbook/1.0/?function=' + escape( jQuery( '#docs-list' ).val() ) + '&amp;locale=<?php echo urlencode( get_locale() ) ?>&amp;version=<?php echo urlencode( $wp_version ) ?>&amp;redirect=true'); }" /></div>

		<?php endif; ?>

<?php if ( is_writeable($real_file) ) : ?>

	<?php if ( in_array($file, (array) get_option('active_plugins')) ) { ?>

		<p><?php _e('<strong>Warning:</strong> Making changes to active plugins is not recommended.  If your changes cause a fatal error, the plugin will be automatically deactivated.'); ?></p>

	<?php } ?>

	<p class="submit">

	<?php

		if ( isset($_GET['phperror']) )

			echo "<input type='hidden' name='phperror' value='1' /><input type='submit' name='submit' class='button-primary' value='" . esc_attr__('Update File and Attempt to Reactivate') . "' tabindex='2' />";

		else

			echo "<input type='submit' name='submit' class='button-primary' value='" . esc_attr__('Update File') . "' tabindex='2' />";

	?>

	</p>

<?php else : ?>

	<p><em><?php _e('You need to make this file writable before you can save your changes. See <a href="http://codex.wordpress.org/Changing_File_Permissions">the Codex</a> for more information.'); ?></em></p>

<?php endif; ?>

</form>

<br class="clear" />

</div>

<script type="text/javascript">

/* <![CDATA[ */

jQuery(document).ready(function($){

	$('#template').submit(function(){ $('#scrollto').val( $('#newcontent').scrollTop() ); });

	$('#newcontent').scrollTop( $('#scrollto').val() );

});

/* ]]> */

</script>

<?php

	break;

}

include("admin-footer.php");