/**
* Finds a pingback server URI based on the given URL.
*
* Checks the HTML for the rel="pingback" link and x-pingback headers. It does
* a check for the x-pingback headers first and returns that, if available. The
* check for the rel="pingback" has more overhead than just the header.
*
* @since 0.0.1
*
* @param string $url URL to ping.
* @param int $deprecated Not Used.
* @return false|string False on failure, string containing URI on success.
*/
function discover_pingback_server_uri($url, $deprecated = '')
{
if (!empty($deprecated)) {
_deprecated_argument(__FUNCTION__, '2.7');
}
$pingback_str_dquote = 'rel="pingback"';
$pingback_str_squote = 'rel=\'pingback\'';
/** @todo Should use Filter Extension or custom preg_match instead. */
$parsed_url = parse_url($url);
if (!isset($parsed_url['host'])) {
// Not an URL. This should never happen.
return false;
}
//Do not search for a pingback server on our own uploads
$uploads_dir = hq_upload_dir();
if (0 === strpos($url, $uploads_dir['baseurl'])) {
return false;
}
$response = hq_safe_remote_head($url, array('timeout' => 2, 'httpversion' => '1.0'));
if (is_hq_error($response)) {
return false;
}
if (hq_remote_retrieve_header($response, 'x-pingback')) {
return hq_remote_retrieve_header($response, 'x-pingback');
}
// Not an (x)html, sgml, or xml page, no use going further.
if (preg_match('#(image|audio|video|model)/#is', hq_remote_retrieve_header($response, 'content-type'))) {
return false;
}
// Now do a GET since we're going to look in the html headers (and we're sure it's not a binary file)
$response = hq_safe_remote_get($url, array('timeout' => 2, 'httpversion' => '1.0'));
if (is_hq_error($response)) {
return false;
}
$contents = hq_remote_retrieve_body($response);
$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
if ($pingback_link_offset_dquote || $pingback_link_offset_squote) {
$quote = $pingback_link_offset_dquote ? '"' : '\'';
$pingback_link_offset = $quote == '"' ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
$pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
$pingback_href_start = $pingback_href_pos + 6;
$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
$pingback_server_url_len = $pingback_href_end - $pingback_href_start;
$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
// We may find rel="pingback" but an incomplete pingback URL
if ($pingback_server_url_len > 0) {
// We got it!
return $pingback_server_url;
}
}
return false;
}
/**
* Create a file in the upload folder with given content.
*
* If there is an error, then the key 'error' will exist with the error message.
* If success, then the key 'file' will have the unique file path, the 'url' key
* will have the link to the new file. and the 'error' key will be set to false.
*
* This function will not move an uploaded file to the upload folder. It will
* create a new file with the content in $bits parameter. If you move the upload
* file, read the content of the uploaded file, and then you can give the
* filename and content to this function, which will add it to the upload
* folder.
*
* The permissions will be set on the new file automatically by this function.
*
* @since 0.0.1
*
* @param string $name Filename.
* @param null|string $deprecated Never used. Set to null.
* @param mixed $bits File content
* @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
* @return array
*/
function hq_upload_bits($name, $deprecated, $bits, $time = null)
{
if (!empty($deprecated)) {
_deprecated_argument(__FUNCTION__, '2.0');
}
if (empty($name)) {
return array('error' => __('Empty filename'));
}
$hq_filetype = hq_check_filetype($name);
if (!$hq_filetype['ext'] && !current_user_can('unfiltered_upload')) {
return array('error' => __('Invalid file type'));
}
$upload = hq_upload_dir($time);
if ($upload['error'] !== false) {
return $upload;
}
/**
* Filter whether to treat the upload bits as an error.
*
* Passing a non-array to the filter will effectively short-circuit preparing
* the upload bits, returning that value instead.
*
* @since 0.0.1
*
* @param mixed $upload_bits_error An array of upload bits data, or a non-array error to return.
*/
$upload_bits_error = apply_filters('hq_upload_bits', array('name' => $name, 'bits' => $bits, 'time' => $time));
if (!is_array($upload_bits_error)) {
$upload['error'] = $upload_bits_error;
return $upload;
}
$filename = hq_unique_filename($upload['path'], $name);
$new_file = $upload['path'] . "/{$filename}";
if (!hq_mkdir_p(dirname($new_file))) {
if (0 === strpos($upload['basedir'], ABSPATH)) {
$error_path = str_replace(ABSPATH, '', $upload['basedir']) . $upload['subdir'];
} else {
$error_path = basename($upload['basedir']) . $upload['subdir'];
}
$message = sprintf(__('Unable to create directory %s. Is its parent directory writable by the server?'), $error_path);
return array('error' => $message);
}
$ifp = @fopen($new_file, 'hq');
if (!$ifp) {
return array('error' => sprintf(__('Could not write file %s'), $new_file));
}
@fwrite($ifp, $bits);
fclose($ifp);
clearstatcache();
// Set correct file permissions
$stat = @stat(dirname($new_file));
$perms = $stat['mode'] & 07777;
$perms = $perms & 0666;
@chmod($new_file, $perms);
clearstatcache();
// Compute the URL
$url = $upload['url'] . "/{$filename}";
return array('file' => $new_file, 'url' => $url, 'error' => false);
}
/**
* Outputs the form used by the importers to accept the data to be imported
*
* @since 0.0.1
*
* @param string $action The action attribute for the form.
*/
function hq_import_upload_form($action)
{
/**
* Filter the maximum allowed upload size for import files.
*
* @since 0.0.1
*
* @see hq_max_upload_size()
*
* @param int $max_upload_size Allowed upload size. Default 1 MB.
*/
$bytes = apply_filters('import_upload_size_limit', hq_max_upload_size());
$size = size_format($bytes);
$upload_dir = hq_upload_dir();
if (!empty($upload_dir['error'])) {
?>
<div class="error"><p><?php
_e('Before you can upload your import file, you will need to fix the following error:');
?>
</p>
<p><strong><?php
echo $upload_dir['error'];
?>
</strong></p></div><?php
} else {
?>
<form enctype="multipart/form-data" id="import-upload-form" method="post" class="hq-upload-form" action="<?php
echo esc_url(hq_nonce_url($action, 'import-upload'));
?>
">
<p>
<label for="upload"><?php
_e('Choose a file from your computer:');
?>
</label> (<?php
printf(__('Maximum size: %s'), $size);
?>
)
<input type="file" id="upload" name="import" size="25" />
<input type="hidden" name="action" value="save" />
<input type="hidden" name="max_file_size" value="<?php
echo $bytes;
?>
" />
</p>
<?php
submit_button(__('Upload file and import'), 'button');
?>
</form>
<?php
}
}
/**
* Tries to convert an attachment URL into a post ID.
*
* @since 0.0.1
*
* @global hqdb $hqdb HiveQueen database abstraction object.
*
* @param string $url The URL to resolve.
* @return int The found post ID, or 0 on failure.
*/
function attachment_url_to_postid($url)
{
global $hqdb;
$dir = hq_upload_dir();
$path = $url;
if (0 === strpos($path, $dir['baseurl'] . '/')) {
$path = substr($path, strlen($dir['baseurl'] . '/'));
}
$sql = $hqdb->prepare("SELECT post_id FROM {$hqdb->postmeta} WHERE meta_key = '_hq_attached_file' AND meta_value = %s", $path);
$post_id = $hqdb->get_var($sql);
/**
* Filter an attachment id found by URL.
*
* @since 0.0.1
*
* @param int|null $post_id The post_id (if any) found by the function.
* @param string $url The URL being looked up.
*/
$post_id = apply_filters('attachment_url_to_postid', $post_id, $url);
return (int) $post_id;
}
/**
* Retrieve the URL for an attachment.
*
* @since 0.0.1
*
* @global string $pagenow
*
* @param int $post_id Optional. Attachment ID. Default 0.
* @return string|false Attachment URL, otherwise false.
*/
function hq_get_attachment_url($post_id = 0)
{
$post_id = (int) $post_id;
if (!($post = get_post($post_id))) {
return false;
}
if ('attachment' != $post->post_type) {
return false;
}
$url = '';
// Get attached file.
if ($file = get_post_meta($post->ID, '_hq_attached_file', true)) {
// Get upload directory.
if (($uploads = hq_upload_dir()) && false === $uploads['error']) {
// Check that the upload base exists in the file location.
if (0 === strpos($file, $uploads['basedir'])) {
// Replace file location with url location.
$url = str_replace($uploads['basedir'], $uploads['baseurl'], $file);
} elseif (false !== strpos($file, 'hq-content/uploads')) {
$url = $uploads['baseurl'] . substr($file, strpos($file, 'hq-content/uploads') + 18);
} else {
// It's a newly-uploaded file, therefore $file is relative to the basedir.
$url = $uploads['baseurl'] . "/{$file}";
}
}
}
/*
* If any of the above options failed, Fallback on the GUID as used pre-2.7,
* not recommended to rely upon this.
*/
if (empty($url)) {
$url = get_the_guid($post->ID);
}
// On SSL front-end, URLs should be HTTPS.
if (is_ssl() && !is_admin() && 'hq-login.php' !== $GLOBALS['pagenow']) {
$url = set_url_scheme($url);
}
/**
* Filter the attachment URL.
*
* @since 0.0.1
*
* @param string $url URL for the given attachment.
* @param int $post_id Attachment ID.
*/
$url = apply_filters('hq_get_attachment_url', $url, $post->ID);
if (empty($url)) {
return false;
}
return $url;
}
/**
* Handle PHP uploads in HiveQueen, sanitizing file names, checking extensions for mime type,
* and moving the file to the appropriate directory within the uploads directory.
*
* @since 0.0.1
*
* @see hq_handle_upload_error
*
* @param array $file Reference to a single element of $_FILES. Call the function once for each uploaded file.
* @param array|false $overrides An associative array of names => values to override default variables. Default false.
* @param string $time Time formatted in 'yyyy/mm'.
* @param string $action Expected value for $_POST['action'].
* @return array On success, returns an associative array of file attributes. On failure, returns
* $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
*/
function _hq_handle_upload(&$file, $overrides, $time, $action)
{
// The default error handler.
if (!function_exists('hq_handle_upload_error')) {
function hq_handle_upload_error(&$file, $message)
{
return array('error' => $message);
}
}
/**
* Filter the data for a file before it is uploaded to HiveQueen.
*
* The dynamic portion of the hook name, `$action`, refers to the post action.
*
* @since 0.0.1
* @since 0.0.1
*
* @param array $file An array of data for a single file.
*/
$file = apply_filters("{$action}_prefilter", $file);
// You may define your own function and pass the name in $overrides['upload_error_handler']
$upload_error_handler = 'hq_handle_upload_error';
if (isset($overrides['upload_error_handler'])) {
$upload_error_handler = $overrides['upload_error_handler'];
}
// You may have had one or more 'hq_handle_upload_prefilter' functions error out the file. Handle that gracefully.
if (isset($file['error']) && !is_numeric($file['error']) && $file['error']) {
return $upload_error_handler($file, $file['error']);
}
// Install user overrides. Did we mention that this voids your warranty?
// You may define your own function and pass the name in $overrides['unique_filename_callback']
$unique_filename_callback = null;
if (isset($overrides['unique_filename_callback'])) {
$unique_filename_callback = $overrides['unique_filename_callback'];
}
/*
* This may not have orignially been intended to be overrideable,
* but historically has been.
*/
if (isset($overrides['upload_error_strings'])) {
$upload_error_strings = $overrides['upload_error_strings'];
} else {
// Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error'].
$upload_error_strings = array(false, __('The uploaded file exceeds the upload_max_filesize directive in php.ini.'), __('The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.'), __('The uploaded file was only partially uploaded.'), __('No file was uploaded.'), '', __('Missing a temporary folder.'), __('Failed to write file to disk.'), __('File upload stopped by extension.'));
}
// All tests are on by default. Most can be turned off by $overrides[{test_name}] = false;
$test_form = isset($overrides['test_form']) ? $overrides['test_form'] : true;
$test_size = isset($overrides['test_size']) ? $overrides['test_size'] : true;
// If you override this, you must provide $ext and $type!!
$test_type = isset($overrides['test_type']) ? $overrides['test_type'] : true;
$mimes = isset($overrides['mimes']) ? $overrides['mimes'] : false;
// A correct form post will pass this test.
if ($test_form && (!isset($_POST['action']) || $_POST['action'] != $action)) {
return call_user_func($upload_error_handler, $file, __('Invalid form submission.'));
}
// A successful upload will pass this test. It makes no sense to override this one.
if (isset($file['error']) && $file['error'] > 0) {
return call_user_func($upload_error_handler, $file, $upload_error_strings[$file['error']]);
}
$test_file_size = 'hq_handle_upload' === $action ? $file['size'] : filesize($file['tmp_name']);
// A non-empty file will pass this test.
if ($test_size && !($test_file_size > 0)) {
if (is_multisite()) {
$error_msg = __('File is empty. Please upload something more substantial.');
} else {
$error_msg = __('File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.');
}
return call_user_func($upload_error_handler, $file, $error_msg);
}
// A properly uploaded file will pass this test. There should be no reason to override this one.
$test_uploaded_file = 'hq_handle_upload' === $action ? @is_uploaded_file($file['tmp_name']) : @is_file($file['tmp_name']);
if (!$test_uploaded_file) {
return call_user_func($upload_error_handler, $file, __('Specified file failed upload test.'));
}
// A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
if ($test_type) {
$hq_filetype = hq_check_filetype_and_ext($file['tmp_name'], $file['name'], $mimes);
$ext = empty($hq_filetype['ext']) ? '' : $hq_filetype['ext'];
$type = empty($hq_filetype['type']) ? '' : $hq_filetype['type'];
$proper_filename = empty($hq_filetype['proper_filename']) ? '' : $hq_filetype['proper_filename'];
// Check to see if hq_check_filetype_and_ext() determined the filename was incorrect
if ($proper_filename) {
$file['name'] = $proper_filename;
}
if ((!$type || !$ext) && !current_user_can('unfiltered_upload')) {
return call_user_func($upload_error_handler, $file, __('Sorry, this file type is not permitted for security reasons.'));
}
if (!$type) {
$type = $file['type'];
}
} else {
$type = '';
}
/*
* A writable uploads dir will pass this test. Again, there's no point
* overriding this one.
*/
if (!(($uploads = hq_upload_dir($time)) && false === $uploads['error'])) {
return call_user_func($upload_error_handler, $file, $uploads['error']);
}
$filename = hq_unique_filename($uploads['path'], $file['name'], $unique_filename_callback);
// Move the file to the uploads dir.
$new_file = $uploads['path'] . "/{$filename}";
if ('hq_handle_upload' === $action) {
$move_new_file = @move_uploaded_file($file['tmp_name'], $new_file);
} else {
$move_new_file = @rename($file['tmp_name'], $new_file);
}
if (false === $move_new_file) {
if (0 === strpos($uploads['basedir'], ABSPATH)) {
$error_path = str_replace(ABSPATH, '', $uploads['basedir']) . $uploads['subdir'];
} else {
$error_path = basename($uploads['basedir']) . $uploads['subdir'];
}
return $upload_error_handler($file, sprintf(__('The uploaded file could not be moved to %s.'), $error_path));
}
// Set correct file permissions.
$stat = stat(dirname($new_file));
$perms = $stat['mode'] & 0666;
@chmod($new_file, $perms);
// Compute the URL.
$url = $uploads['url'] . "/{$filename}";
if (is_multisite()) {
delete_transient('dirsize_cache');
}
/**
* Filter the data array for the uploaded file.
*
* @since 0.0.1
*
* @param array $upload {
* Array of upload data.
*
* @type string $file Filename of the newly-uploaded file.
* @type string $url URL of the uploaded file.
* @type string $type File type.
* }
* @param string $context The type of upload action. Values include 'upload' or 'sideload'.
*/
return apply_filters('hq_handle_upload', array('file' => $new_file, 'url' => $url, 'type' => $type), 'hq_handle_sideload' === $action ? 'sideload' : 'upload');
}
