WordPress/wp-admin/admin-functions.php

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<?php
function url_shorten ($url) {
$short_url = str_replace('http://', '', stripslashes($url));
$short_url = str_replace('www.', '', $short_url);
if ('/' == substr($short_url, -1))
$short_url = substr($short_url, 0, -1);
if (strlen($short_url) > 35)
$short_url = substr($short_url, 0, 32).'...';
return $short_url;
}
function selected($selected, $current) {
if ($selected == $current) echo ' selected="selected"';
}
function checked($checked, $current) {
if ($checked == $current) echo ' checked="checked"';
}
function return_categories_list( $parent = 0, $sortbyname = FALSE )
{
/*
* This function returns an list of all categories
* that have $parent as their parent
* if no parent is specified we will assume top level caegories
* are required.
*/
global $wpdb;
// select sort order
$sort = "cat_id";
if( TRUE == $sortbyname )
{
$sort = "cat_name";
}
// First query the database
$cats_tmp = $wpdb->get_results("SELECT cat_id FROM $wpdb->categories WHERE category_parent = $parent ORDER BY $sort");
// Now strip this down to a simple array of IDs
$cats = array();
if( count($cats_tmp) > 0 )
{
foreach( $cats_tmp as $cat )
{
$cats[] = $cat->cat_id;
}
}
// Return the list of categories
return $cats;
}
function get_nested_categories($default = 0, $parent = 0) {
global $post_ID, $mode, $wpdb;
if ($post_ID) {
$checked_categories = $wpdb->get_col("
SELECT category_id
FROM $wpdb->categories, $wpdb->post2cat
WHERE $wpdb->post2cat.category_id = cat_ID AND $wpdb->post2cat.post_id = '$post_ID'
");
if(count($checked_categories) == 0)
{
// No selected categories, strange
$checked_categories[] = $default;
}
} else {
$checked_categories[] = $default;
}
$cats = return_categories_list($parent, TRUE);
$result = array();
foreach($cats as $cat)
{
$result[$cat]['children'] = get_nested_categories($default, $cat);
$result[$cat]['cat_ID'] = $cat;
$result[$cat]['checked'] = in_array($cat, $checked_categories);
$result[$cat]['cat_name'] = get_the_category_by_ID($cat);
}
return $result;
}
function write_nested_categories($categories) {
foreach($categories as $category) {
echo '<label for="category-', $category['cat_ID'], '" class="selectit"><input value="', $category['cat_ID'],
'" type="checkbox" name="post_category[]" id="category-', $category['cat_ID'], '"',
($category['checked'] ? ' checked="checked"' : ""), '/> ', htmlspecialchars($category['cat_name']), "</label>\n";
if(isset($category['children'])) {
echo "\n<span class='cat-nest'>\n";
write_nested_categories($category['children']);
echo "</span>\n";
}
}
}
function dropdown_categories($default = 0) {
write_nested_categories(get_nested_categories($default));
}
// Dandy new recursive multiple category stuff.
function cat_rows($parent = 0, $level = 0, $categories = 0) {
global $wpdb, $bgcolor;
if (!$categories) {
$categories = $wpdb->get_results("SELECT * FROM $wpdb->categories ORDER BY cat_name");
}
if ($categories) {
foreach ($categories as $category) {
if ($category->category_parent == $parent) {
$category->cat_name = htmlspecialchars($category->cat_name);
$count = $wpdb->get_var("SELECT COUNT(post_id) FROM $wpdb->post2cat WHERE category_id = $category->cat_ID");
$pad = str_repeat('&#8212; ', $level);
$class = ('alternate' == $class) ? '' : 'alternate';
echo "<tr class='$class'><th scope='row'>$category->cat_ID</th><td>$pad $category->cat_name</td>
<td>$category->category_description</td>
<td>$count</td>
<td><a href='categories.php?action=edit&amp;cat_ID=$category->cat_ID' class='edit'>" . __('Edit') . "</a></td><td><a href='categories.php?action=Delete&amp;cat_ID=$category->cat_ID' onclick=\"return confirm('". sprintf(__("You are about to delete the category \'%s\'. All of its posts will go to the default category.\\n \'OK\' to delete, \'Cancel\' to stop."), addslashes($category->cat_name)) . "')\" class='delete'>" . __('Delete') . "</a></td>
</tr>";
cat_rows($category->cat_ID, $level + 1);
}
}
} else {
return false;
}
}
function wp_dropdown_cats($currentcat, $currentparent = 0, $parent = 0, $level = 0, $categories = 0) {
global $wpdb, $bgcolor;
if (!$categories) {
$categories = $wpdb->get_results("SELECT * FROM $wpdb->categories ORDER BY cat_name");
}
if ($categories) {
foreach ($categories as $category) { if ($currentcat != $category->cat_ID && $parent == $category->category_parent) {
$count = $wpdb->get_var("SELECT COUNT(post_id) FROM $wpdb->post2cat WHERE category_id = $category->cat_ID");
$pad = str_repeat('&#8211; ', $level);
$category->cat_name = htmlspecialchars($category->cat_name);
echo "\n\t<option value='$category->cat_ID'";
if ($currentparent == $category->cat_ID)
echo " selected='selected'";
echo ">$pad$category->cat_name</option>";
wp_dropdown_cats($currentcat, $currentparent, $category->cat_ID, $level + 1, $categories);
} }
} else {
return false;
}
}
function wp_create_thumbnail($file, $max_side, $effect = '') {
// 1 = GIF, 2 = JPEG, 3 = PNG
if(file_exists($file)) {
$type = getimagesize($file);
// if the associated function doesn't exist - then it's not
// handle. duh. i hope.
if(!function_exists('imagegif') && $type[2] == 1) {
$error = __('Filetype not supported. Thumbnail not created.');
}elseif(!function_exists('imagejpeg') && $type[2] == 2) {
$error = __('Filetype not supported. Thumbnail not created.');
}elseif(!function_exists('imagepng') && $type[2] == 3) {
$error = __('Filetype not supported. Thumbnail not created.');
} else {
// create the initial copy from the original file
if($type[2] == 1) {
$image = imagecreatefromgif($file);
} elseif($type[2] == 2) {
$image = imagecreatefromjpeg($file);
} elseif($type[2] == 3) {
$image = imagecreatefrompng($file);
}
if (function_exists('imageantialias'))
imageantialias($image, TRUE);
$image_attr = getimagesize($file);
// figure out the longest side
if($image_attr[0] > $image_attr[1]) {
$image_width = $image_attr[0];
$image_height = $image_attr[1];
$image_new_width = $max_side;
$image_ratio = $image_width/$image_new_width;
$image_new_height = $image_height/$image_ratio;
//width is > height
} else {
$image_width = $image_attr[0];
$image_height = $image_attr[1];
$image_new_height = $max_side;
$image_ratio = $image_height/$image_new_height;
$image_new_width = $image_width/$image_ratio;
//height > width
}
$thumbnail = imagecreatetruecolor($image_new_width, $image_new_height);
@imagecopyresized($thumbnail, $image, 0, 0, 0, 0, $image_new_width, $image_new_height, $image_attr[0], $image_attr[1]);
// move the thumbnail to it's final destination
$path = explode('/', $file);
$thumbpath = substr($file, 0, strrpos($file, '/')) . '/thumb-' . $path[count($path)-1];
if($type[2] == 1) {
if(!imagegif($thumbnail, $thumbpath)) {
$error = __("Thumbnail path invalid");
}
} elseif($type[2] == 2) {
if(!imagejpeg($thumbnail, $thumbpath)) {
$error = __("Thumbnail path invalid");
}
} elseif($type[2] == 3) {
if(!imagepng($thumbnail, $thumbpath)) {
$error = __("Thumbnail path invalid");
}
}
}
}
if(!empty($error))
{
return $error;
}
else
{
return 1;
}
}
// Some postmeta stuff
function has_meta($postid) {
global $wpdb;
return $wpdb->get_results("
SELECT meta_key, meta_value, meta_id, post_id
FROM $wpdb->postmeta
WHERE post_id = '$postid'
ORDER BY meta_key,meta_id",ARRAY_A);
}
function list_meta($meta) {
global $post_ID;
// Exit if no meta
if (!$meta) return;
?>
<table id='meta-list' cellpadding="3">
<tr>
<th><?php _e('Key') ?></th>
<th><?php _e('Value') ?></th>
<th colspan='2'><?php _e('Action') ?></th>
</tr>
<?php
foreach ($meta as $entry) {
$style = ('class="alternate"' == $style) ? '' : 'class="alternate"';
echo "
<tr $style>
<td valign='top'><input name='meta[{$entry['meta_id']}][key]' tabindex='6' type='text' size='20' value='{$entry['meta_key']}' /></td>
<td><textarea name='meta[{$entry['meta_id']}][value]' tabindex='6' rows='2' cols='30'>{$entry['meta_value']}</textarea></td>
<td align='center' width='10%'><input name='updatemeta' type='submit' class='updatemeta' tabindex='6' value='" . __('Update') ."' /></td>
<td align='center' width='10%'><input name='deletemeta[{$entry['meta_id']}]' type='submit' class='deletemeta' tabindex='6' value='" . __('Delete') ."' /></td>
</tr>
";
}
echo "
</table>
";
}
// Get a list of previously defined keys
function get_meta_keys() {
global $wpdb;
$keys = $wpdb->get_col("
SELECT meta_key
FROM $wpdb->postmeta
GROUP BY meta_key
ORDER BY meta_key");
return $keys;
}
function meta_form() {
global $wpdb;
$keys = $wpdb->get_col("
SELECT meta_key
FROM $wpdb->postmeta
GROUP BY meta_key
ORDER BY meta_id DESC
LIMIT 10");
?>
<h3><?php _e('Add a new custom field to this post:') ?></h3>
<table cellspacing="3" cellpadding="3">
<tr>
<th colspan="2"><?php _e('Key') ?></th>
<th><?php _e('Value') ?></th>
</tr>
<tr valign="top">
<td align="right" width="18%">
<?php if ($keys) : ?>
<select id="metakeyselect" name="metakeyselect" tabindex="7">
<option value="#NONE#">- Select -</option>
<?php
foreach($keys as $key) {
echo "\n\t<option value='$key'>$key</option>";
}
?>
</select> or
<?php endif; ?>
</td>
<td><input type="text" id="metakeyinput" name="metakeyinput" tabindex="7" /></td>
<td><textarea id="metavalue" name="metavalue" rows="3" cols="25" tabindex="7"></textarea></td>
</tr>
</table>
<p class="submit"><input type="submit" name="updatemeta" tabindex="7" value="<?php _e('Add Custom Field &raquo;') ?>" /></p>
<?php
}
function add_meta($post_ID) {
global $wpdb;
$metakeyselect = $wpdb->escape( stripslashes( trim($_POST['metakeyselect']) ) );
$metakeyinput = $wpdb->escape( stripslashes( trim($_POST['metakeyinput']) ) );
$metavalue = $wpdb->escape( stripslashes( trim($_POST['metavalue']) ) );
if (!empty($metavalue) && ((('#NONE#' != $metakeyselect) && !empty($metakeyselect)) || !empty($metakeyinput))) {
// We have a key/value pair. If both the select and the
// input for the key have data, the input takes precedence:
if ('#NONE#' != $metakeyselect)
$metakey = $metakeyselect;
if ($metakeyinput)
$metakey = $metakeyinput; // default
$result = $wpdb->query("
INSERT INTO $wpdb->postmeta
(post_id,meta_key,meta_value)
VALUES ('$post_ID','$metakey','$metavalue')
");
}
} // add_meta
function delete_meta($mid) {
global $wpdb;
$result = $wpdb->query("DELETE FROM $wpdb->postmeta WHERE meta_id = '$mid'");
}
function update_meta($mid, $mkey, $mvalue) {
global $wpdb;
return $wpdb->query("UPDATE $wpdb->postmeta SET meta_key = '$mkey', meta_value = '$mvalue' WHERE meta_id = '$mid'");
}
function touch_time($edit = 1) {
global $month, $postdata;
// echo $postdata['Date'];
if ('draft' == $postdata->post_status) {
$checked = 'checked="checked" ';
$edit = false;
} else {
$checked = ' ';
}
echo '<fieldset><legend><input type="checkbox" class="checkbox" name="edit_date" value="1" id="timestamp" '.$checked.'/> <label for="timestamp">' . __('Edit timestamp') . '</label></legend>';
$time_adj = time() + (get_settings('gmt_offset') * 3600);
$post_date = $postdata->post_date;
$jj = ($edit) ? mysql2date('d', $post_date) : gmdate('d', $time_adj);
$mm = ($edit) ? mysql2date('m', $post_date) : gmdate('m', $time_adj);
$aa = ($edit) ? mysql2date('Y', $post_date) : gmdate('Y', $time_adj);
$hh = ($edit) ? mysql2date('H', $post_date) : gmdate('H', $time_adj);
$mn = ($edit) ? mysql2date('i', $post_date) : gmdate('i', $time_adj);
$ss = ($edit) ? mysql2date('s', $post_date) : gmdate('s', $time_adj);
echo "<select name=\"mm\">\n";
for ($i=1; $i < 13; $i=$i+1) {
echo "\t\t\t<option value=\"$i\"";
if ($i == $mm)
echo " selected='selected'";
if ($i < 10) {
$ii = "0".$i;
} else {
$ii = "$i";
}
echo ">".$month["$ii"]."</option>\n";
}
?>
</select>
<input type="text" name="jj" value="<?php echo $jj; ?>" size="2" maxlength="2" />
<input type="text" name="aa" value="<?php echo $aa ?>" size="4" maxlength="5" /> @
<input type="text" name="hh" value="<?php echo $hh ?>" size="2" maxlength="2" /> :
<input type="text" name="mn" value="<?php echo $mn ?>" size="2" maxlength="2" />
<input type="hidden" name="ss" value="<?php echo $ss ?>" size="2" maxlength="2" /> <?php _e('Existing timestamp'); ?>: <?php echo "{$month[$mm]} $jj, $aa @ $hh:$mn"; ?></fieldset>
<?php
}
function check_admin_referer() {
$adminurl = strtolower(get_settings('siteurl')).'/wp-admin';
$referer = strtolower($_SERVER['HTTP_REFERER']);
if ( !strstr($referer, $adminurl) ) {
die('Sorry, you need to enable sending referrers, for this feature to work.');
}
}
// insert_with_markers: Owen Winkler
// Inserts an array of strings into a file (.htaccess), placing it between
// BEGIN and END markers. Replaces existing marked info. Retains surrounding
// data. Creates file if none exists.
// Returns true on write success, false on failure.
function insert_with_markers($filename, $marker, $insertion) {
if (!file_exists($filename) || is_writeable($filename)) {
$markerdata = explode("\n", implode('', file($filename)));
$f = fopen($filename, 'w');
$foundit = false;
if ($markerdata) {
$state = true;
$newline = '';
foreach($markerdata as $markerline) {
if (strstr($markerline, "# BEGIN {$marker}")) $state = false;
if ($state) fwrite($f, "{$newline}{$markerline}");
if (strstr($markerline, "# END {$marker}")) {
fwrite($f, "{$newline}# BEGIN {$marker}");
if(is_array($insertion)) foreach($insertion as $insertline) fwrite($f, "{$newline}{$insertline}");
fwrite($f, "{$newline}# END {$marker}");
$state = true;
$foundit = true;
}
$newline = "\n";
}
}
if (!$foundit) {
fwrite($f, "# BEGIN {$marker}\n");
foreach($insertion as $insertline) fwrite($f, "{$insertline}\n");
fwrite($f, "# END {$marker}");
}
fclose($f);
return true;
} else {
return false;
}
}
// insert_with_markers: Owen Winkler
// Returns an array of strings from a file (.htaccess) from between BEGIN
// and END markers.
function extract_from_markers($filename, $marker) {
$result = array();
if($markerdata = explode("\n", implode('', file($filename))));
{
$state = false;
foreach($markerdata as $markerline) {
if(strstr($markerline, "# END {$marker}")) $state = false;
if($state) $result[] = $markerline;
if(strstr($markerline, "# BEGIN {$marker}")) $state = true;
}
}
return $result;
}
function the_quicktags () {
// Browser detection sucks, but until Safari supports the JS needed for this to work people just assume it's a bug in WP
if ( !strstr($_SERVER['HTTP_USER_AGENT'], 'Safari') ) :
echo '
<div id="quicktags">
<a href="http://wordpress.org/docs/reference/post/#quicktags" title="' . __('Help with quicktags') . '">' . __('Quicktags') . '</a>:
<script src="quicktags.js" type="text/javascript"></script>
<script type="text/javascript">edToolbar();</script>
';
echo '</div>';
endif;
}
function get_theme_data($theme_file) {
$theme_data = implode('', file($theme_file));
preg_match("|Theme Name:(.*)|i", $theme_data, $theme_name);
preg_match("|Theme URI:(.*)|i", $theme_data, $theme_uri);
preg_match("|Description:(.*)|i", $theme_data, $description);
preg_match("|Author:(.*)|i", $theme_data, $author_name);
preg_match("|Author URI:(.*)|i", $theme_data, $author_uri);
preg_match("|Template:(.*)|i", $theme_data, $template);
if ( preg_match("|Version:(.*)|i", $theme_data, $version) )
$version = $version[1];
else
$version ='';
$description = wptexturize($description[1]);
$name = $theme_name[1];
$name = trim($name);
$theme = $name;
if ('' != $theme_uri && '' != $name) {
$theme = __("<a href='{$theme_uri[1]}' title='Visit theme homepage'>{$theme}</a>");
}
if ('' == $author_uri) {
$author = $author_name[1];
} else {
$author = __("<a href='{$author_uri[1]}' title='Visit author homepage'>{$author_name[1]}</a>");
}
return array('Name' => $name, 'Title' => $theme, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template[1]);
}
function get_themes() {
$themes = array();
$theme_loc = 'wp-content/themes';
$theme_root = ABSPATH . $theme_loc;
// Files in wp-content/themes directory
$themes_dir = @ dir($theme_root);
if ($themes_dir) {
while(($theme_dir = $themes_dir->read()) !== false) {
if (is_dir($theme_root . '/' . $theme_dir)) {
$stylish_dir = @ dir($theme_root . '/' . $theme_dir);
while(($theme_file = $stylish_dir->read()) !== false) {
if ( $theme_file == 'style.css' ) {
$theme_files[] = $theme_dir . '/' . $theme_file;
}
}
}
}
}
$default_files = array(get_settings('blogfilename'), 'wp-comments.php', 'wp-comments-popup.php', 'wp-comments-post.php', 'wp-footer.php', 'wp-header.php', 'wp-sidebar.php', 'footer.php', 'header.php', 'sidebar.php');
// Get the files for the default template.
$default_template_files = array();
{
$dirs = array('', 'wp-content');
foreach ($dirs as $dir) {
$template_dir = @ dir(ABSPATH . $dir);
while(($file = $template_dir->read()) !== false) {
if ( !preg_match('|^\.+$|', $file) && in_array($file, $default_files))
$default_template_files[] = trim("$dir/$file", '/');
}
}
}
// Get the files for the default stylesheet.
$default_stylesheet_files = array();
{
$stylesheet_dir = @ dir(ABSPATH);
while(($file = $stylesheet_dir->read()) !== false) {
if ( !preg_match('|^\.+$|', $file) && preg_match('|\.css$|', $file))
$default_stylesheet_files[] = "$file";
}
}
// The default theme always exists.
$themes['Default'] = array('Name' => 'Default', 'Title' => 'WordPress Default', 'Description' => 'The default theme included with WordPress.', 'Author' => 'Dave Shea', 'Version' => '1.3', 'Template' => 'default', 'Stylesheet' => 'default', 'Template Files' => $default_template_files, 'Stylesheet Files' => $default_stylesheet_files, 'Template Dir' => '/', 'Stylesheet Dir' => '/', 'Parent Theme' => '');
if (!$themes_dir || !$theme_files) {
return $themes;
}
sort($theme_files);
foreach($theme_files as $theme_file) {
$theme_data = get_theme_data("$theme_root/$theme_file");
$name = $theme_data['Name'];
$title = $theme_data['Title'];
$description = wptexturize($theme_data['Description']);
$version = $theme_data['Version'];
$author = $theme_data['Author'];
$template = $theme_data['Template'];
$stylesheet = dirname($theme_file);
if (empty($template)) {
if (file_exists(dirname("$theme_root/$theme_file/index.php"))) {
$template = dirname($theme_file);
} else {
continue;
}
}
$template = trim($template);
if (($template != 'default') && (! file_exists("$theme_root/$template/index.php"))) {
continue;
}
if (empty($name)) {
$name = dirname($theme_file);
$title = $name;
}
$stylesheet_files = array();
if ($stylesheet != 'default') {
$stylesheet_dir = @ dir("$theme_root/$stylesheet");
if ($stylesheet_dir) {
while(($file = $stylesheet_dir->read()) !== false) {
if ( !preg_match('|^\.+$|', $file) && preg_match('|\.css$|', $file) )
$stylesheet_files[] = "$theme_loc/$stylesheet/$file";
}
}
} else {
$stylesheet_files = $default_stylesheet_files;
}
$template_files = array();
if ($template != 'default') {
$template_dir = @ dir("$theme_root/$template");
if ($template_dir) {
while(($file = $template_dir->read()) !== false) {
if ( !preg_match('|^\.+$|', $file) && preg_match('|\.php$|', $file) )
$template_files[] = "$theme_loc/$template/$file";
}
}
} else {
$template_files = $default_template_files;
}
$template_dir = dirname($template_files[0]);
$stylesheet_dir = dirname($stylesheet_files[0]);
if (empty($template_dir)) $template_dir = '/';
if (empty($stylesheet_dir)) $stylesheet_dir = '/';
$themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template, 'Stylesheet' => $stylesheet, 'Template Files' => $template_files, 'Stylesheet Files' => $stylesheet_files, 'Template Dir' => $template_dir, 'Stylesheet Dir' => $stylesheet_dir);
}
// Resolve theme dependencies.
$theme_names = array_keys($themes);
foreach ($theme_names as $theme_name) {
$themes[$theme_name]['Parent Theme'] = '';
if ($themes[$theme_name]['Stylesheet'] != $themes[$theme_name]['Template']) {
foreach ($theme_names as $parent_theme_name) {
if (($themes[$parent_theme_name]['Stylesheet'] == $themes[$parent_theme_name]['Template']) && ($themes[$parent_theme_name]['Template'] == $themes[$theme_name]['Template'])) {
$themes[$theme_name]['Parent Theme'] = $themes[$parent_theme_name]['Name'];
break;
}
}
}
}
return $themes;
}
function get_current_theme() {
$themes = get_themes();
$theme_names = array_keys($themes);
$current_template = get_settings('template');
$current_stylesheet = get_settings('stylesheet');
$current_theme = 'Default';
if ($themes) {
foreach ($theme_names as $theme_name) {
if ($themes[$theme_name]['Stylesheet'] == $current_stylesheet &&
$themes[$theme_name]['Template'] == $current_template) {
$current_theme = $themes[$theme_name]['Name'];
}
}
}
return $current_theme;
}
function validate_current_theme() {
$theme_loc = 'wp-content/themes';
$theme_root = ABSPATH . $theme_loc;
$template = get_settings('template');
$stylesheet = get_settings('stylesheet');
if (($template != 'default') && (! file_exists("$theme_root/$template/index.php"))) {
update_option('template', 'default');
update_option('stylesheet', 'default');
return false;
}
if (($stylesheet != 'default') && (! file_exists("$theme_root/$stylesheet/style.css"))) {
update_option('template', 'default');
update_option('stylesheet', 'default');
return false;
}
return true;
}
?>