diff options
Diffstat (limited to 'phpBB/includes/functions.php')
| -rw-r--r-- | phpBB/includes/functions.php | 100 |
1 files changed, 99 insertions, 1 deletions
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php index ebe9a9918d..e492f97022 100644 --- a/phpBB/includes/functions.php +++ b/phpBB/includes/functions.php @@ -4894,12 +4894,107 @@ function phpbb_http_login($param) } /** +* Escapes and quotes a string for use as an HTML/XML attribute value. +* +* This is a port of Python xml.sax.saxutils quoteattr. +* +* The function will attempt to choose a quote character in such a way as to +* avoid escaping quotes in the string. If this is not possible the string will +* be wrapped in double quotes and double quotes will be escaped. +* +* @param string $data The string to be escaped +* @param array $entities Associative array of additional entities to be escaped +* @return string Escaped and quoted string +*/ +function phpbb_quoteattr($data, $entities = null) +{ + $data = str_replace('&', '&', $data); + $data = str_replace('>', '>', $data); + $data = str_replace('<', '<', $data); + + $data = str_replace("\n", ' ', $data); + $data = str_replace("\r", ' ', $data); + $data = str_replace("\t", '	', $data); + + if (!empty($entities)) + { + $data = str_replace(array_keys($entities), array_values($entities), $data); + } + + if (strpos($data, '"') !== false) + { + if (strpos($data, "'") !== false) + { + $data = '"' . str_replace('"', '"', $data) . '"'; + } + else + { + $data = "'" . $data . "'"; + } + } + else + { + $data = '"' . $data . '"'; + } + + return $data; +} + +/** +* Converts query string (GET) parameters in request into hidden fields. +* +* Useful for forwarding GET parameters when submitting forms with GET method. +* +* It is possible to omit some of the GET parameters, which is useful if +* they are specified in the form being submitted. +* +* sid is always omitted. +* +* @param phpbb_request $request Request object +* @param array $exclude A list of variable names that should not be forwarded +* @return string HTML with hidden fields +*/ +function phpbb_build_hidden_fields_for_query_params($request, $exclude = null) +{ + $names = $request->variable_names(phpbb_request_interface::GET); + $hidden = ''; + foreach ($names as $name) + { + // Sessions are dealt with elsewhere, omit sid always + if ($name == 'sid') + { + continue; + } + + // Omit any additional parameters requested + if (!empty($exclude) && in_array($name, $exclude)) + { + continue; + } + + $escaped_name = phpbb_quoteattr($name); + + // Note: we might retrieve the variable from POST or cookies + // here. To avoid exposing cookies, skip variables that are + // overwritten somewhere other than GET entirely. + $value = $request->variable($name, '', true); + $get_value = $request->variable($name, '', true, phpbb_request_interface::GET); + if ($value === $get_value) + { + $escaped_value = phpbb_quoteattr($value); + $hidden .= "<input type='hidden' name=$escaped_name value=$escaped_value />"; + } + } + return $hidden; +} + +/** * Generate page header */ function page_header($page_title = '', $display_online_list = true, $item_id = 0, $item = 'forum') { global $db, $config, $template, $SID, $_SID, $_EXTRA_URL, $user, $auth, $phpEx, $phpbb_root_path; - global $phpbb_dispatcher; + global $phpbb_dispatcher, $request; if (defined('HEADER_INC')) { @@ -5088,6 +5183,8 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0 $timezone_name = $user->lang['timezones'][$timezone_name]; } + $hidden_fields_for_jumpbox = phpbb_build_hidden_fields_for_query_params($request, array('f')); + // The following assigns all _common_ variables that may be used at any point in a template. $template->assign_vars(array( 'SITENAME' => $config['sitename'], @@ -5102,6 +5199,7 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0 'RECORD_USERS' => $l_online_record, 'PRIVATE_MESSAGE_INFO' => $l_privmsgs_text, 'PRIVATE_MESSAGE_INFO_UNREAD' => $l_privmsgs_text_unread, + 'HIDDEN_FIELDS_FOR_JUMPBOX' => $hidden_fields_for_jumpbox, 'S_USER_NEW_PRIVMSG' => $user->data['user_new_privmsg'], 'S_USER_UNREAD_PRIVMSG' => $user->data['user_unread_privmsg'], |