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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* 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
*/
/**
* Core libraries.
*/
require_once './libraries/config/FormDisplay.tpl.php';
require_once './libraries/config/validate.lib.php';
require_once './libraries/js_escape.lib.php';
/**
* Form management class, displays and processes forms
*
* @package PhpMyAdmin
*/
class FormDisplay
{
/**
* Form list
* @var Form[]
*/
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 $_translatedPaths = array();
/**
* Server paths change indexes so we define maps from current server
* path to the first one, indexed by work path
* @var array
*/
private $_systemPaths = 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 $_jsLangStrings = array();
/**
* Tells whether forms have been validated
* @var bool
*/
private $_isValidated = true;
/**
* Dictionary with user preferences keys
* @var array
*/
private $_userprefsKeys;
/**
* Dictionary with disallowed user preferences keys
* @var array
*/
private $_userprefsDisallow;
/**
* Constructor
*/
public function __construct()
{
$this->_jsLangStrings = array(
'error_nan_p' => __('Not a positive number'),
'error_nan_nneg' => __('Not a non-negative number'),
'error_incorrect_port' => __('Not a valid port number'),
'error_invalid_value' => __('Incorrect value'),
'error_value_lte' => __('Value must be equal or lower than %s'));
// initialize validators
PMA_config_get_validators();
}
/**
* Registers form in form manager
*
* @param string $form_name
* @param array $form
* @param int $server_id 0 if new server, validation; >= 1 if editing a server
*
* @return void
*/
public function registerForm($form_name, array $form, $server_id = null)
{
$this->_forms[$form_name] = new Form($form_name, $form, $server_id);
$this->_isValidated = false;
foreach ($this->_forms[$form_name]->fields as $path) {
$work_path = $server_id === null
? $path
: str_replace('Servers/1/', "Servers/$server_id/", $path);
$this->_systemPaths[$work_path] = $path;
$this->_translatedPaths[$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
* @param bool $check_form_submit whether check for $_POST['submit_save']
*
* @return boolean whether processing was successful
*/
public function process($allow_partial_save = true, $check_form_submit = true)
{
if ($check_form_submit && !isset($_POST['submit_save'])) {
return false;
}
// save forms
if (count($this->_forms) > 0) {
return $this->save(array_keys($this->_forms), $allow_partial_save);
}
return false;
}
/**
* Runs validation for all registered forms
*
* @return void
*/
private function _validate()
{
if ($this->_isValidated) {
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->_systemPaths);
$values[$path] = $cf->getValue($work_path);
$paths[] = $path;
}
}
// run validation
$errors = PMA_config_validate($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, $this->_systemPaths);
// field error
if (!$work_path) {
// form error, fix path
$work_path = $path;
}
$this->_errors[$work_path] = $error_list;
}
}
$this->_isValidated = true;
}
/**
* Outputs HTML for forms
*
* @param bool $tabbed_form
* @param bool $show_restore_default whether show "restore default" button
* besides the input field
*
* @return void
*/
public function display($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);
$validators = PMA_config_get_validators();
PMA_displayFormTop();
if ($tabbed_form) {
$tabs = array();
foreach ($this->_forms as $form) {
$tabs[$form->name] = PMA_lang("Form_$form->name");
}
PMA_displayTabsTop($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();
}
// user preferences
$this->_loadUserprefsInfo();
// display forms
foreach ($this->_forms as $form) {
/* @var $form Form */
$form_desc = isset($GLOBALS["strConfigForm_{$form->name}_desc"])
? PMA_lang("Form_{$form->name}_desc")
: '';
$form_errors = isset($this->_errors[$form->name])
? $this->_errors[$form->name] : null;
PMA_displayFieldsetTop(
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->_systemPaths);
$translated_path = $this->_translatedPaths[$work_path];
// always true/false for user preferences display
// otherwise null
$userprefs_allow = isset($this->_userprefsKeys[$path])
? !isset($this->_userprefsDisallow[$path])
: null;
// display input
$this->_displayFieldInput(
$form,
$field,
$path,
$work_path,
$translated_path,
$show_restore_default,
$userprefs_allow,
$js_default
);
// register JS validators for this field
if (isset($validators[$path])) {
PMA_addJsValidate($translated_path, $validators[$path], $js);
}
}
PMA_displayFieldsetBottom();
}
if ($tabbed_form) {
PMA_displayTabsBottom();
}
PMA_displayFormBottom();
// if not already done, send strings used for valdiation to JavaScript
if (!$js_lang_sent) {
$js_lang_sent = true;
$js_lang = array();
foreach ($this->_jsLangStrings as $strName => $strValue) {
$js_lang[] = "'$strName': '" . PMA_jsFormat($strValue, false) . '\'';
}
$js[] = "$.extend(PMA_messages, {\n\t" . implode(",\n\t", $js_lang) . '})';
}
$js[] = "$.extend(defaultValues, {\n\t" . implode(",\n\t", $js_default) . '})';
PMA_displayJavascript($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 mixed $userprefs_allow whether user preferences are enabled
* for this field (null - no support,
* true/false - enabled/disabled)
* @param array &$js_default array which stores JavaScript code
* to be displayed
*
* @return void
*/
private function _displayFieldInput(
Form $form, $field, $system_path, $work_path,
$translated_path, $show_restore_default, $userprefs_allow, array &$js_default
) {
$name = PMA_lang_name($system_path);
$description = PMA_lang_name($system_path, 'desc', '');
$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,
'userprefs_allow' => $userprefs_allow,
'userprefs_comment' => PMA_lang_name($system_path, 'cmt', ''));
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 'short_string':
$type = 'short_text';
break;
case 'double':
case 'integer':
$type = 'number_text';
break;
case 'boolean':
$type = 'checkbox';
break;
case 'select':
$type = 'select';
$opts['values'] = $form->getOptionValueList($form->fields[$field]);
break;
case 'array':
$type = 'list';
$value = (array) $value;
$value_default = (array) $value_default;
break;
case 'group':
// :group:end is changed to :group:end:{unique id} in Form class
if (substr($field, 7, 4) != 'end:') {
PMA_displayGroupHeader(substr($field, 7));
} else {
PMA_displayGroupFooter();
}
return;
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;
}
}
}
$this->_setComments($system_path, $opts);
// send default value to form's JS
$js_line = '\'' . $translated_path . '\': ';
switch ($type) {
case 'text':
case 'short_text':
case 'number_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;
PMA_displayInput(
$translated_path, $name, $type, $value,
$description, $value_is_default, $opts
);
}
/**
* Displays errors
*
* @return void
*/
public function displayErrors()
{
$this->_validate();
if (count($this->_errors) == 0) {
return;
}
foreach ($this->_errors as $system_path => $error_list) {
if (isset($this->_systemPaths[$system_path])) {
$path = $this->_systemPaths[$system_path];
$name = PMA_lang_name($path);
} else {
$name = $GLOBALS["strConfigForm_$system_path"];
}
PMA_displayErrors($name, $error_list);
}
}
/**
* Reverts erroneous fields to their default values
*
* @return void
*/
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->_systemPaths[$work_path])) {
continue;
}
$canonical_path = $this->_systemPaths[$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)
{
$value_cmp = is_bool($value)
? (int) $value
: $value;
foreach ($allowed as $vk => $v) {
// equality comparison only if both values are numeric or not numeric
// (allows to skip 0 == 'string' equalling to true)
// or identity (for string-string)
if (($vk == $value && !(is_numeric($value_cmp) xor is_numeric($vk)))
|| $vk === $value
) {
// keep boolean value as boolean
if (!is_bool($value)) {
settype($value, gettype($vk));
}
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();
$is_setup_script = defined('PMA_SETUP');
if ($is_setup_script) {
$this->_loadUserprefsInfo();
}
$this->_errors = array();
foreach ($forms as $form_name) {
/* @var $form Form */
if (isset($this->_forms[$form_name])) {
$form = $this->_forms[$form_name];
} 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->_systemPaths);
$key = $this->_translatedPaths[$work_path];
$type = $form->getOptionType($field);
// skip groups
if ($type == 'group') {
continue;
}
// ensure the value is set
if (!isset($_POST[$key])) {
// checkboxes aren't set by browsers if they're off
if ($type == 'boolean') {
$_POST[$key] = false;
} else {
$this->_errors[$form->name][] = sprintf(
__('Missing data for %s'),
'<i>' . PMA_lang_name($system_path) . '</i>'
);
$result = false;
continue;
}
}
// user preferences allow/disallow
if ($is_setup_script
&& isset($this->_userprefsKeys[$system_path])
) {
if (isset($this->_userprefsDisallow[$system_path])
&& isset($_POST[$key . '-userprefs-allow'])
) {
unset($this->_userprefsDisallow[$system_path]);
} else if (!isset($_POST[$key . '-userprefs-allow'])) {
$this->_userprefsDisallow[$system_path] = true;
}
}
// cast variables to correct type
switch ($type) {
case 'double':
settype($_POST[$key], 'float');
break;
case 'boolean':
case 'integer':
if ($_POST[$key] !== '') {
settype($_POST[$key], $type);
}
break;
case 'select':
$successfully_validated = $this->_validateSelect(
$_POST[$key],
$form->getOptionValueList($system_path)
);
if (! $successfully_validated) {
$this->_errors[$work_path][] = __('Incorrect value');
$result = false;
continue;
}
break;
case 'string':
case 'short_string':
$_POST[$key] = trim($_POST[$key]);
break;
case 'array':
// eliminate empty values and ensure we have an array
$post_values = is_array($_POST[$key])
? $_POST[$key]
: 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();
$match = preg_match(
"/^(.+):(?:[ ]?)(\\w+)$/", $value, $matches
);
if ($match) {
// 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], $path);
}
if ($is_setup_script) {
$cf->set(
'UserprefsDisallow',
array_keys($this->_userprefsDisallow)
);
}
}
// 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 PMA_Util::getDocuLink(
'config',
'cfg_' . $this->_getOptName($path)
);
}
/**
* Returns link to wiki
*
* @param string $path
*
* @return string
*/
public function getWikiLink($path)
{
$opt_name = $this->_getOptName($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 PMA_linkURL('http://wiki.phpmyadmin.net/pma/Config#' . $opt_name);
}
/**
* Changes path so it can be used in URLs
*
* @param string $path
*
* @return string
*/
private function _getOptName($path)
{
return str_replace(array('Servers/1/', '/'), array('Servers/', '_'), $path);
}
/**
* Fills out {@link userprefs_keys} and {@link userprefs_disallow}
*
* @return void
*/
private function _loadUserprefsInfo()
{
if ($this->_userprefsKeys === null) {
$this->_userprefsKeys = array_flip(PMA_readUserprefsFieldNames());
// read real config for user preferences display
$userprefs_disallow = defined('PMA_SETUP')
? ConfigFile::getInstance()->get('UserprefsDisallow', array())
: $GLOBALS['cfg']['UserprefsDisallow'];
$this->_userprefsDisallow = array_flip($userprefs_disallow);
}
}
/**
* Sets field comments and warnings based on current environment
*
* @param string $system_path
* @param array $opts
*
* @return void
*/
private function _setComments($system_path, array &$opts)
{
// RecodingEngine - mark unavailable types
if ($system_path == 'RecodingEngine') {
$comment = '';
if (!function_exists('iconv')) {
$opts['values']['iconv'] .= ' (' . __('unavailable') . ')';
$comment = sprintf(
__('"%s" requires %s extension'), 'iconv', 'iconv'
);
}
if (!function_exists('recode_string')) {
$opts['values']['recode'] .= ' (' . __('unavailable') . ')';
$comment .= ($comment ? ", " : '') . sprintf(
__('"%s" requires %s extension'),
'recode', 'recode'
);
}
$opts['comment'] = $comment;
$opts['comment_warning'] = true;
}
// ZipDump, GZipDump, BZipDump - check function availability
if ($system_path == 'ZipDump'
|| $system_path == 'GZipDump'
|| $system_path == 'BZipDump'
) {
$comment = '';
$funcs = array(
'ZipDump' => array('zip_open', 'gzcompress'),
'GZipDump' => array('gzopen', 'gzencode'),
'BZipDump' => array('bzopen', 'bzcompress'));
if (!function_exists($funcs[$system_path][0])) {
$comment = sprintf(
__('import will not work, missing function (%s)'),
$funcs[$system_path][0]
);
}
if (!function_exists($funcs[$system_path][1])) {
$comment .= ($comment ? '; ' : '') . sprintf(
__('export will not work, missing function (%s)'),
$funcs[$system_path][1]
);
}
$opts['comment'] = $comment;
$opts['comment_warning'] = true;
}
if ($system_path == 'SQLQuery/Validate'
&& ! $GLOBALS['cfg']['SQLValidator']['use']
) {
$opts['comment'] = __('SQL Validator is disabled');
$opts['comment_warning'] = true;
}
if ($system_path == 'SQLValidator/use') {
if (!class_exists('SOAPClient')) {
@include_once 'SOAP/Client.php';
if (!class_exists('SOAP_Client')) {
$opts['comment'] = __('SOAP extension not found');
$opts['comment_warning'] = true;
}
}
}
if (!defined('PMA_SETUP')) {
if (($system_path == 'MaxDbList' || $system_path == 'MaxTableList'
|| $system_path == 'QueryHistoryMax')
) {
$opts['comment'] = sprintf(
__('maximum %s'), $GLOBALS['cfg'][$system_path]
);
}
}
}
}
?>