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<?php
/**
* Form management class, displays and processes forms
*
* Explanation of used terms:
* o work_path - original field path, eg. Servers/4/verbose
* o system_path - work_path modified so that it points to the first server, eg. Servers/1/verbose
* o translated_path - work_path modified for HTML field name, a path with
* slashes changed to hyphens, eg. Servers-4-verbose
*
* @package phpMyAdmin-setup
* @author Piotr Przybylski <piotrprz@gmail.com>
* @license http://www.gnu.org/licenses/gpl.html GNU GPL 2.0
* @version $Id$
*/
/**
* Core libraries.
*/
require_once './setup/lib/FormDisplay.tpl.php';
require_once './setup/lib/validate.lib.php';
require_once './libraries/js_escape.lib.php';
/**
* Form management class, displays and processes forms
* @package phpMyAdmin-setup
*/
class FormDisplay
{
/**
* Form list
* @var array
*/
private $forms = array();
/**
* Stores validation errors, indexed by paths
* [ Form_name ] is an array of form errors
* [path] is a string storing error associated with single field
* @var array
*/
private $errors = array();
/**
* Paths changed so that they can be used as HTML ids, indexed by paths
* @var array
*/
private $translated_paths = array();
/**
* Server paths change indexes so we define maps from current server
* path to the first one, indexed by work path
* @var array
*/
private $system_paths = array();
/**
* Language strings which will be sent to PMA_messages JS variable
* Will be looked up in $GLOBALS: str{value} or strSetup{value}
* @var array
*/
private $js_lang_strings = array('error_nan_p', 'error_nan_nneg',
'error_incorrect_port');
/**
* Tells whether forms have been validated
* @var bool
*/
private $is_valdiated = true;
/**
* Registers form in form manager
*
* @param string $form_name
* @param int $server_id 0 if new server, validation; >= 1 if editing a server
*/
public function registerForm($form_name, $server_id = null)
{
$this->forms[$form_name] = new Form($form_name, $server_id);
$this->is_valdiated = false;
foreach ($this->forms[$form_name]->fields as $path) {
$work_path = $server_id === null
? $path
: str_replace('Servers/1/', "Servers/$server_id/", $path);
$this->system_paths[$work_path] = $path;
$this->translated_paths[$work_path] = str_replace('/', '-', $work_path);
}
}
/**
* Processes forms, returns true on successful save
*
* @param bool $allow_partial_save allows for partial form saving on failed validation
* @return boolean
*/
public function process($allow_partial_save = true)
{
// gather list of forms to save
if (!isset($_POST['submit_save'])) {
return false;
}
// save forms
if (count($this->forms) > 0) {
return $this->save(array_keys($this->forms), $allow_partial_save);
}
return false;
}
/**
* Runs validation for all registered forms
*/
private function _validate()
{
if ($this->is_valdiated) {
return;
}
$cf = ConfigFile::getInstance();
$paths = array();
$values = array();
foreach ($this->forms as $form) {
/* @var $form Form */
$paths[] = $form->name;
// collect values and paths
foreach ($form->fields as $path) {
$work_path = array_search($path, $this->system_paths);
$values[$path] = $cf->getValue($work_path);
$paths[] = $path;
}
}
// run validation
$errors = validate($paths, $values, false);
// change error keys from canonical paths to work paths
if (is_array($errors) && count($errors) > 0) {
$this->errors = array();
foreach ($errors as $path => $error_list) {
$work_path = array_search($path, $this->system_paths);
// field error
if (!$work_path) {
// form error, fix path
$work_path = $path;
}
$this->errors[$work_path] = $error_list;
}
}
$this->is_valdiated = true;
}
/**
* Outputs HTML for forms
*
* @param bool $tabbed_form
* @param bool $show_restore_default whether show "restore default" button besides the input field
*/
public function display($tabbed_form = false, $show_restore_default = false)
{
static $js_lang_sent = false;
$js = array();
$js_default = array();
$tabbed_form = $tabbed_form && (count($this->forms) > 1);
$validators = ConfigFile::getInstance()->getDbEntry('_validators');
display_form_top();
if ($tabbed_form) {
$tabs = array();
foreach ($this->forms as $form) {
$tabs[$form->name] = PMA_lang("Form_$form->name");
}
display_tabs_top($tabs);
}
// valdiate only when we aren't displaying a "new server" form
$is_new_server = false;
foreach ($this->forms as $form) {
/* @var $form Form */
if ($form->index === 0) {
$is_new_server = true;
break;
}
}
if (!$is_new_server) {
$this->_validate();
}
// display forms
foreach ($this->forms as $form) {
/* @var $form Form */
$form_desc = isset($GLOBALS["strSetupForm_{$form->name}_desc"])
? PMA_lang("Form_{$form->name}_desc")
: '';
$form_errors = isset($this->errors[$form->name])
? $this->errors[$form->name] : null;
display_fieldset_top(PMA_lang("Form_$form->name"),
$form_desc, $form_errors, array('id' => $form->name));
foreach ($form->fields as $field => $path) {
$work_path = array_search($path, $this->system_paths);
$translated_path = $this->translated_paths[$work_path];
// display input
$this->_displayFieldInput($form, $field, $path, $work_path,
$translated_path, $show_restore_default, $js_default);
// register JS validators for this field
if (isset($validators[$path])) {
js_validate($translated_path, $validators[$path], $js);
}
}
display_fieldset_bottom();
}
if ($tabbed_form) {
display_tabs_bottom();
}
display_form_bottom();
// if not already done, send strings used for valdiation to JavaScript
if (!$js_lang_sent) {
$js_lang_sent = true;
$js_lang = array();
foreach ($this->js_lang_strings as $str) {
$lang = isset($GLOBALS["strSetup$str"])
? $GLOBALS["strSetup$str"]
: filter_input($GLOBALS["str$str"]); // null if not set
$js_lang[] = "'$str': '" . PMA_jsFormat($lang, false) . '\'';
}
$js[] = '$extend(PMA_messages, {' . implode(",\n\t", $js_lang) . '})';
}
$js[] = '$extend(defaultValues, {' . implode(",\n\t", $js_default) . '})';
display_js($js);
}
/**
* Prepares data for input field display and outputs HTML code
*
* @param Form $form
* @param string $field field name as it appears in $form
* @param string $system_path field path, eg. Servers/1/verbose
* @param string $work_path work path, eg. Servers/4/verbose
* @param string $translated_path work path changed so that it can be used as XHTML id
* @param bool $show_restore_default whether show "restore default" button besides the input field
* @param array &$js_default array which stores JavaScript code to be displayed
*/
private function _displayFieldInput(Form $form, $field, $system_path, $work_path,
$translated_path, $show_restore_default, array &$js_default)
{
$name = PMA_lang_name($system_path);
$description = PMA_lang_desc($system_path);
$cf = ConfigFile::getInstance();
$value = $cf->get($work_path);
$value_default = $cf->getDefault($system_path);
$value_is_default = false;
if ($value === null || $value === $value_default) {
$value = $value_default;
$value_is_default = true;
}
$opts = array(
'doc' => $this->getDocLink($system_path),
'wiki' => $this->getWikiLink($system_path),
'show_restore_default' => $show_restore_default);
if (isset($form->default[$system_path])) {
$opts['setvalue'] = $form->default[$system_path];
}
if (isset($this->errors[$work_path])) {
$opts['errors'] = $this->errors[$work_path];
}
switch ($form->getOptionType($field)) {
case 'string':
$type = 'text';
break;
case 'double':
$type = 'text';
break;
case 'integer':
$type = 'text';
break;
case 'boolean':
$type = 'checkbox';
break;
case 'select':
$type = 'select';
$opts['values'] = array();
$values = $form->getOptionValueList($form->fields[$field]);
foreach ($values as $v) {
$opts['values'][$v] = $v;
}
break;
case 'array':
$type = 'list';
$value = (array) $value;
$value_default = (array) $value_default;
break;
case 'NULL':
trigger_error("Field $system_path has no type", E_USER_WARNING);
return;
}
// TrustedProxies requires changes before displaying
if ($system_path == 'TrustedProxies') {
foreach ($value as $ip => &$v) {
if (!preg_match('/^-\d+$/', $ip)) {
$v = $ip . ': ' . $v;
}
}
}
// send default value to form's JS
$js_line = '\'' . $translated_path . '\': ';
switch ($type) {
case 'text':
$js_line .= '\'' . PMA_escapeJsString($value_default) . '\'';
break;
case 'checkbox':
$js_line .= $value_default ? 'true' : 'false';
break;
case 'select':
$value_default_js = is_bool($value_default)
? (int) $value_default
: $value_default;
$js_line .= '[\'' . PMA_escapeJsString($value_default_js) . '\']';
break;
case 'list':
$js_line .= '\'' . PMA_escapeJsString(implode("\n", $value_default)) . '\'';
break;
}
$js_default[] = $js_line;
display_input($translated_path, $name, $description, $type,
$value, $value_is_default, $opts);
}
/**
* Displays errors
*/
public function displayErrors()
{
$this->_validate();
if (count($this->errors) == 0) {
return;
}
foreach ($this->errors as $system_path => $error_list) {
if (isset($this->system_paths[$system_path])) {
$path = $this->system_paths[$system_path];
$name = PMA_lang_name($path);
} else {
$name = $GLOBALS["strSetupForm_$system_path"];
}
display_errors($name, $error_list);
}
}
/**
* Reverts erroneous fields to their default values
*/
public function fixErrors()
{
$this->_validate();
if (count($this->errors) == 0) {
return;
}
$cf = ConfigFile::getInstance();
foreach (array_keys($this->errors) as $work_path) {
if (!isset($this->system_paths[$work_path])) {
continue;
}
$canonical_path = $this->system_paths[$work_path];
$cf->set($work_path, $cf->getDefault($canonical_path));
}
}
/**
* Validates select field and casts $value to correct type
*
* @param string $value
* @param array $allowed
* @return bool
*/
private function _validateSelect(&$value, array $allowed)
{
foreach ($allowed as $v) {
if ($value == $v) {
settype($value, gettype($v));
return true;
}
}
return false;
}
/**
* Validates and saves form data to session
*
* @param array|string $forms array of form names
* @param bool $allow_partial_save allows for partial form saving on failed validation
* @return boolean true on success (no errors and all saved)
*/
public function save($forms, $allow_partial_save = true)
{
$result = true;
$cf = ConfigFile::getInstance();
$forms = (array) $forms;
$values = array();
$to_save = array();
$this->errors = array();
foreach ($forms as $form) {
/* @var $form Form */
if (isset($this->forms[$form])) {
$form = $this->forms[$form];
} else {
continue;
}
// get current server id
$change_index = $form->index === 0
? $cf->getServerCount() + 1
: false;
// grab POST values
foreach ($form->fields as $field => $system_path) {
$work_path = array_search($system_path, $this->system_paths);
$key = $this->translated_paths[$work_path];
// ensure the value is set
if (!isset($_POST[$key])) {
// checkboxes aren't set by browsers if they're off
if ($form->getOptionType($field) == 'boolean') {
$_POST[$key] = false;
} else {
$this->errors[$form->name][] = PMA_lang(
'error_missing_field_data',
'<i>' . PMA_lang_name($system_path) . '</i>');
$result = false;
continue;
}
}
// cast variables to correct type
$type = $form->getOptionType($field);
switch ($type) {
case 'double':
settype($_POST[$key], 'float');
break;
case 'boolean':
case 'integer':
if ($_POST[$key] !== '') {
settype($_POST[$key], $type);
}
break;
case 'select':
if (!$this->_validateSelect($_POST[$key], $form->getOptionValueList($system_path))) {
$this->errors[$work_path][] = $GLOBALS["strSetuperror_incorrect_value"];
$result = false;
continue;
}
break;
case 'string':
$_POST[$key] = trim($_POST[$key]);
break;
case 'array':
// eliminate empty values and ensure we have an array
$post_values = explode("\n", $_POST[$key]);
$_POST[$key] = array();
foreach ($post_values as $v) {
$v = trim($v);
if ($v !== '') {
$_POST[$key][] = $v;
}
}
break;
}
// now we have value with proper type
$values[$system_path] = $_POST[$key];
if ($change_index !== false) {
$work_path = str_replace("Servers/$form->index/",
"Servers/$change_index/", $work_path);
}
$to_save[$work_path] = $system_path;
}
}
// save forms
if ($allow_partial_save || empty($this->errors)) {
foreach ($to_save as $work_path => $path) {
// TrustedProxies requires changes before saving
if ($path == 'TrustedProxies') {
$proxies = array();
$i = 0;
foreach ($values[$path] as $value) {
$matches = array();
if (preg_match("/^(.+):(?:[ ]?)(\\w+)$/", $value, $matches)) {
// correct 'IP: HTTP header' pair
$ip = trim($matches[1]);
$proxies[$ip] = trim($matches[2]);
} else {
// save also incorrect values
$proxies["-$i"] = $value;
$i++;
}
}
$values[$path] = $proxies;
}
$cf->set($work_path, $values[$path], $path);
}
}
// don't look for non-critical errors
$this->_validate();
return $result;
}
/**
* Tells whether form validation failed
*
* @return boolean
*/
public function hasErrors()
{
return count($this->errors) > 0;
}
/**
* Returns link to documentation
*
* @param string $path
* @return string
*/
public function getDocLink($path)
{
$test = substr($path, 0, 6);
if ($test == 'Import' || $test == 'Export') {
return '';
}
return '../Documentation.html#cfg_' . self::_getOptName($path);
}
/**
* Returns link to wiki
*
* @param string $path
* @return string
*/
public function getWikiLink($path)
{
$opt_name = self::_getOptName($path);
if (substr($opt_name, 0, 7) == 'Servers') {
$opt_name = substr($opt_name, 8);
if (strpos($opt_name, 'AllowDeny') === 0) {
$opt_name = str_replace('_', '_.28', $opt_name) . '.29';
}
}
$test = substr($path, 0, 6);
if ($test == 'Import') {
$opt_name = substr($opt_name, 7);
if ($opt_name == 'format') {
$opt_name = 'format_2';
}
}
if ($test == 'Export') {
$opt_name = substr($opt_name, 7);
}
return 'http://wiki.phpmyadmin.net/pma/Config#' . $opt_name;
}
/**
* Changes path so it can be used in URLs
*
* @param string $path
* @return string
*/
private static function _getOptName($path)
{
return str_replace(array('Servers/1/', '/'), array('Servers/', '_'), $path);
}
}
?>
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