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358 lines
11 KiB
358 lines
11 KiB
2 years ago
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<?php
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/**
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* Static methods for URL/hidden inputs generating
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use PhpMyAdmin\Crypto\Crypto;
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use function base64_decode;
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use function base64_encode;
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use function htmlentities;
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use function htmlspecialchars;
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use function http_build_query;
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use function in_array;
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use function ini_get;
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use function is_array;
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use function json_encode;
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use function str_contains;
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use function strlen;
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use function strtr;
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/**
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* Static methods for URL/hidden inputs generating
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*/
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class Url
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{
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/**
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* Generates text with hidden inputs.
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*
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* @see Url::getCommon()
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*
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* @param string|array $db optional database name
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* (can also be an array of parameters)
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* @param string $table optional table name
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* @param int $indent indenting level
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* @param string|array $skip do not generate a hidden field for this parameter
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* (can be an array of strings)
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*
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* @return string string with input fields
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*/
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public static function getHiddenInputs(
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$db = '',
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$table = '',
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$indent = 0,
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$skip = []
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) {
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global $config;
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if (is_array($db)) {
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$params =& $db;
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} else {
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$params = [];
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if (strlen((string) $db) > 0) {
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$params['db'] = $db;
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}
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if (strlen((string) $table) > 0) {
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$params['table'] = $table;
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}
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}
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if (! empty($GLOBALS['server']) && $GLOBALS['server'] != $GLOBALS['cfg']['ServerDefault']) {
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$params['server'] = $GLOBALS['server'];
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}
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if (empty($config->getCookie('pma_lang')) && ! empty($GLOBALS['lang'])) {
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$params['lang'] = $GLOBALS['lang'];
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}
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if (! is_array($skip)) {
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if (isset($params[$skip])) {
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unset($params[$skip]);
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}
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} else {
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foreach ($skip as $skipping) {
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if (! isset($params[$skipping])) {
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continue;
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}
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unset($params[$skipping]);
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}
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}
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return self::getHiddenFields($params);
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}
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/**
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* create hidden form fields from array with name => value
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*
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* <code>
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* $values = array(
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* 'aaa' => aaa,
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* 'bbb' => array(
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* 'bbb_0',
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* 'bbb_1',
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* ),
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* 'ccc' => array(
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* 'a' => 'ccc_a',
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* 'b' => 'ccc_b',
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* ),
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* );
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* echo Url::getHiddenFields($values);
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*
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* // produces:
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* <input type="hidden" name="aaa" Value="aaa">
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* <input type="hidden" name="bbb[0]" Value="bbb_0">
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* <input type="hidden" name="bbb[1]" Value="bbb_1">
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* <input type="hidden" name="ccc[a]" Value="ccc_a">
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* <input type="hidden" name="ccc[b]" Value="ccc_b">
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* </code>
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*
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* @param array $values hidden values
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* @param string $pre prefix
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* @param bool $is_token if token already added in hidden input field
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*
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* @return string form fields of type hidden
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*/
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public static function getHiddenFields(array $values, $pre = '', $is_token = false)
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{
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$fields = '';
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/* Always include token in plain forms */
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if ($is_token === false && isset($_SESSION[' PMA_token '])) {
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$values['token'] = $_SESSION[' PMA_token '];
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}
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foreach ($values as $name => $value) {
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if (! empty($pre)) {
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$name = $pre . '[' . $name . ']';
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}
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if (is_array($value)) {
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$fields .= self::getHiddenFields($value, $name, true);
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} else {
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// do not generate an ending "\n" because
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// Url::getHiddenInputs() is sometimes called
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// from a JS document.write()
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$fields .= '<input type="hidden" name="' . htmlspecialchars((string) $name)
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. '" value="' . htmlspecialchars((string) $value) . '">';
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}
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}
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return $fields;
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}
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/**
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* Generates text with URL parameters.
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*
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* <code>
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* $params['myparam'] = 'myvalue';
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* $params['db'] = 'mysql';
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* $params['table'] = 'rights';
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* // note the missing ?
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* echo 'script.php' . Url::getCommon($params);
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* // produces with cookies enabled:
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* // script.php?myparam=myvalue&db=mysql&table=rights
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* // with cookies disabled:
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* // script.php?server=1&lang=en&myparam=myvalue&db=mysql
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* // &table=rights
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*
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* // note the missing ?
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* echo 'script.php' . Url::getCommon();
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* // produces with cookies enabled:
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* // script.php
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* // with cookies disabled:
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* // script.php?server=1&lang=en
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* </code>
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*
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* @param array<string,int|string|bool> $params optional, Contains an associative array with url params
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* @param string $divider optional character to use instead of '?'
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* @param bool $encrypt whether to encrypt URL params
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*
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* @return string string with URL parameters
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*/
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public static function getCommon(array $params = [], $divider = '?', $encrypt = true)
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{
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return self::getCommonRaw($params, $divider, $encrypt);
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}
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/**
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* Generates text with URL parameters.
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*
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* <code>
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* $params['myparam'] = 'myvalue';
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* $params['db'] = 'mysql';
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* $params['table'] = 'rights';
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* // note the missing ?
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* echo 'script.php' . Url::getCommon($params);
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* // produces with cookies enabled:
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* // script.php?myparam=myvalue&db=mysql&table=rights
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* // with cookies disabled:
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* // script.php?server=1&lang=en&myparam=myvalue&db=mysql
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* // &table=rights
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*
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* // note the missing ?
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* echo 'script.php' . Url::getCommon();
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* // produces with cookies enabled:
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* // script.php
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* // with cookies disabled:
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* // script.php?server=1&lang=en
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* </code>
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*
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* @param array<string|int,int|string|bool> $params optional, Contains an associative array with url params
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* @param string $divider optional character to use instead of '?'
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* @param bool $encrypt whether to encrypt URL params
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*
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* @return string string with URL parameters
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*/
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public static function getCommonRaw(array $params = [], $divider = '?', $encrypt = true)
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{
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global $config;
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// avoid overwriting when creating navigation panel links to servers
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if (
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isset($GLOBALS['server'])
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&& $GLOBALS['server'] != $GLOBALS['cfg']['ServerDefault']
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&& ! isset($params['server'])
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&& ! $config->get('is_setup')
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) {
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$params['server'] = $GLOBALS['server'];
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}
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// Can be null when the user is missing an extension.
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if ($config !== null && empty($config->getCookie('pma_lang')) && ! empty($GLOBALS['lang'])) {
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$params['lang'] = $GLOBALS['lang'];
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}
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$query = self::buildHttpQuery($params, $encrypt);
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if (($divider !== '?' && $divider !== '&') || strlen($query) > 0) {
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return $divider . $query;
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}
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return '';
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}
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/**
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* @param array<int|string, mixed> $params
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* @param bool $encrypt whether to encrypt URL params
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*
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* @return string
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*/
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public static function buildHttpQuery($params, $encrypt = true)
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{
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global $config;
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$separator = self::getArgSeparator();
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if (! $encrypt || ! $config->get('URLQueryEncryption')) {
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return http_build_query($params, '', $separator);
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}
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$data = $params;
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$keys = [
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'db',
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'table',
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'field',
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'sql_query',
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'sql_signature',
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'where_clause',
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'goto',
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'back',
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'message_to_show',
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'username',
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'hostname',
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'dbname',
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'tablename',
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'checkprivsdb',
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'checkprivstable',
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];
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$paramsToEncrypt = [];
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foreach ($params as $paramKey => $paramValue) {
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if (! in_array($paramKey, $keys)) {
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continue;
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}
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$paramsToEncrypt[$paramKey] = $paramValue;
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unset($data[$paramKey]);
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}
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if ($paramsToEncrypt !== []) {
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$data['eq'] = self::encryptQuery((string) json_encode($paramsToEncrypt));
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}
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return http_build_query($data, '', $separator);
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}
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public static function encryptQuery(string $query): string
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{
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$crypto = new Crypto();
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return strtr(base64_encode($crypto->encrypt($query)), '+/', '-_');
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}
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public static function decryptQuery(string $query): ?string
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{
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$crypto = new Crypto();
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return $crypto->decrypt(base64_decode(strtr($query, '-_', '+/')));
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}
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/**
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* Returns url separator
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*
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* extracted from arg_separator.input as set in php.ini
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* we do not use arg_separator.output to avoid problems with & and &
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*
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* @param string $encode whether to encode separator or not,
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* currently 'none' or 'html'
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*
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* @return string character used for separating url parts usually ; or &
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*/
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public static function getArgSeparator($encode = 'none')
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{
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static $separator = null;
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static $html_separator = null;
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if ($separator === null) {
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// use separators defined by php, but prefer ';'
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// as recommended by W3C
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// (see https://www.w3.org/TR/1999/REC-html401-19991224/appendix
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// /notes.html#h-B.2.2)
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$arg_separator = (string) ini_get('arg_separator.input');
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if (str_contains($arg_separator, ';')) {
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$separator = ';';
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} elseif (strlen($arg_separator) > 0) {
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$separator = $arg_separator[0];
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} else {
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$separator = '&';
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}
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$html_separator = htmlentities($separator);
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}
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switch ($encode) {
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case 'html':
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return $html_separator;
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case 'text':
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case 'none':
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default:
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return $separator;
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}
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}
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/**
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* @param string $route Route to use
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* @param array $additionalParameters Additional URL parameters
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*/
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public static function getFromRoute(string $route, array $additionalParameters = []): string
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{
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return 'index.php?route=' . $route . self::getCommon($additionalParameters, '&');
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}
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}
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