577 lines
22 KiB
PHP
577 lines
22 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Server config checks management
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*
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* @package PhpMyAdmin
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*/
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/**
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* Performs various compatibility, security and consistency checks on current config
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*
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* Outputs results to message list, must be called between PMA_messagesBegin()
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* and PMA_messagesEnd()
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*
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* @package PhpMyAdmin
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*/
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class ServerConfigChecks
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{
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/**
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* @var ConfigFile configurations being checked
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*/
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protected $cfg;
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/**
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* Constructor.
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*
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* @param ConfigFile $cfg Configuration
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*/
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public function __construct(ConfigFile $cfg)
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{
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$this->cfg = $cfg;
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}
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/**
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* Perform config checks
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*
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* @return void
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*/
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public function performConfigChecks()
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{
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$blowfishSecret = $this->cfg->get('blowfish_secret');
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$blowfishSecretSet = false;
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$cookieAuthUsed = false;
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list(
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$sAllowArbitraryServerWarn, $sBlowfishSecretMsg,
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$sBZipDumpWarn, $sDirectoryNotice, $sForceSSLNotice,
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$sGZipDumpWarn, $sLoginCookieValidityWarn,
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$sLoginCookieValidityWarn2, $sLoginCookieValidityWarn3,
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$sSecurityInfoMsg, $sSrvAuthCfgMsg, $sZipDumpExportWarn,
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$sZipDumpImportWarn
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) = self::defineMessages();
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list($cookieAuthUsed, $blowfishSecret, $blowfishSecretSet)
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= $this->performConfigChecksServers(
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$cookieAuthUsed, $blowfishSecret, $sSrvAuthCfgMsg,
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$sSecurityInfoMsg, $blowfishSecretSet
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);
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$this->performConfigChecksCookieAuthUsed(
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$cookieAuthUsed, $blowfishSecretSet, $sBlowfishSecretMsg,
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$blowfishSecret
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);
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//
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// $cfg['ForceSSL']
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// should be enabled if possible
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//
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if (!$this->cfg->getValue('ForceSSL')) {
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PMA_messagesSet(
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'notice',
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'ForceSSL',
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PMA_lang(PMA_langName('ForceSSL')),
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PMA_lang($sForceSSLNotice)
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);
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}
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//
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// $cfg['AllowArbitraryServer']
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// should be disabled
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//
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if ($this->cfg->getValue('AllowArbitraryServer')) {
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PMA_messagesSet(
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'notice',
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'AllowArbitraryServer',
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PMA_lang(PMA_langName('AllowArbitraryServer')),
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PMA_lang($sAllowArbitraryServerWarn)
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);
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}
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$this->performConfigChecksLoginCookie(
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$sLoginCookieValidityWarn, $sLoginCookieValidityWarn2,
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$sLoginCookieValidityWarn3
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);
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//
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// $cfg['SaveDir']
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// should not be world-accessible
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//
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if ($this->cfg->getValue('SaveDir') != '') {
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PMA_messagesSet(
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'notice',
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'SaveDir',
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PMA_lang(PMA_langName('SaveDir')),
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PMA_lang($sDirectoryNotice)
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);
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}
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//
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// $cfg['TempDir']
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// should not be world-accessible
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//
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if ($this->cfg->getValue('TempDir') != '') {
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PMA_messagesSet(
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'notice',
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'TempDir',
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PMA_lang(PMA_langName('TempDir')),
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PMA_lang($sDirectoryNotice)
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);
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}
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$this->performConfigChecksZips(
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$sGZipDumpWarn, $sBZipDumpWarn, $sZipDumpImportWarn,
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$sZipDumpExportWarn
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);
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}
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/**
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* Check config of servers
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*
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* @param boolean $cookieAuthUsed Cookie auth is used
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* @param string $blowfishSecret Blowfish secret
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* @param string $sServerAuthCfgMsg Message for server auth config
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* @param string $sSecurityInfoMsg Message for security information
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* @param boolean $blowfishSecretSet Blowfish secret set
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*
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* @return array
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*/
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protected function performConfigChecksServers(
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$cookieAuthUsed, $blowfishSecret, $sServerAuthCfgMsg,
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$sSecurityInfoMsg, $blowfishSecretSet
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) {
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$serverCnt = $this->cfg->getServerCount();
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for ($i = 1; $i <= $serverCnt; $i++) {
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$cookieAuthServer
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= ($this->cfg->getValue("Servers/$i/auth_type") == 'cookie');
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$cookieAuthUsed |= $cookieAuthServer;
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$serverName = $this->performConfigChecksServersGetServerName(
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$this->cfg->getServerName($i), $i
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);
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$serverName = htmlspecialchars($serverName);
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list($blowfishSecret, $blowfishSecretSet)
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= $this->performConfigChecksServersSetBlowfishSecret(
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$blowfishSecret, $cookieAuthServer, $blowfishSecretSet
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);
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//
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// $cfg['Servers'][$i]['ssl']
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// should be enabled if possible
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//
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if (!$this->cfg->getValue("Servers/$i/ssl")) {
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$title = PMA_lang(PMA_langName('Servers/1/ssl')) . " ($serverName)";
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PMA_messagesSet(
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'notice',
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"Servers/$i/ssl",
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$title,
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__('You should use SSL connections if your database server supports it.')
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);
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}
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//
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// $cfg['Servers'][$i]['auth_type']
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// warn about full user credentials if 'auth_type' is 'config'
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//
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if ($this->cfg->getValue("Servers/$i/auth_type") == 'config'
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&& $this->cfg->getValue("Servers/$i/user") != ''
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&& $this->cfg->getValue("Servers/$i/password") != ''
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) {
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$title = PMA_lang(PMA_langName('Servers/1/auth_type'))
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. " ($serverName)";
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PMA_messagesSet(
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'notice',
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"Servers/$i/auth_type",
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$title,
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PMA_lang($sServerAuthCfgMsg, $i) . ' '
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. PMA_lang($sSecurityInfoMsg, $i)
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);
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}
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//
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// $cfg['Servers'][$i]['AllowRoot']
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// $cfg['Servers'][$i]['AllowNoPassword']
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// serious security flaw
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//
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if ($this->cfg->getValue("Servers/$i/AllowRoot")
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&& $this->cfg->getValue("Servers/$i/AllowNoPassword")
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) {
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$title = PMA_lang(PMA_langName('Servers/1/AllowNoPassword'))
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. " ($serverName)";
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PMA_messagesSet(
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'notice',
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"Servers/$i/AllowNoPassword",
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$title,
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__('You allow for connecting to the server without a password.') . ' '
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. PMA_lang($sSecurityInfoMsg, $i)
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);
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}
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}
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return array($cookieAuthUsed, $blowfishSecret, $blowfishSecretSet);
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}
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/**
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* Set blowfish secret
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*
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* @param string $blowfishSecret Blowfish secret
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* @param boolean $cookieAuthServer Cookie auth is used
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* @param boolean $blowfishSecretSet Blowfish secret set
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*
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* @return array
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*/
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protected function performConfigChecksServersSetBlowfishSecret(
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$blowfishSecret, $cookieAuthServer, $blowfishSecretSet
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) {
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if ($cookieAuthServer && $blowfishSecret === null) {
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$blowfishSecret = uniqid('', true);
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$blowfishSecretSet = true;
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$this->cfg->set('blowfish_secret', $blowfishSecret);
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return array($blowfishSecret, $blowfishSecretSet);
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}
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return array($blowfishSecret, $blowfishSecretSet);
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}
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/**
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* Define server name
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*
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* @param string $serverName Server name
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* @param int $serverId Server id
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*
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* @return string Server name
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*/
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protected function performConfigChecksServersGetServerName(
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$serverName, $serverId
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) {
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if ($serverName == 'localhost') {
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$serverName .= " [$serverId]";
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return $serverName;
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}
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return $serverName;
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}
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/**
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* Perform config checks for zip part.
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*
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* @param string $sGZipDumpWarning Gzip dump warning
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* @param string $sBZipDumpWarning Bzip dump warning
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* @param string $sZipDumpImportWarn Zip dump import warning
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* @param string $sZipDumpExportWarn Zip dump export warning
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*
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* @return void
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*/
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protected function performConfigChecksZips(
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$sGZipDumpWarning, $sBZipDumpWarning, $sZipDumpImportWarn,
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$sZipDumpExportWarn
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) {
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$this->performConfigChecksServerGZipdump($sGZipDumpWarning);
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$this->performConfigChecksServerBZipdump($sBZipDumpWarning);
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$this->performConfigChecksServersZipdump(
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$sZipDumpImportWarn, $sZipDumpExportWarn
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);
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}
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/**
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* Perform config checks for zip part.
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*
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* @param string $sZipDumpImportWarn Zip dump import warning
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* @param string $sZipDumpExportWarn Zip dump export warning
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*
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* @return void
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*/
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protected function performConfigChecksServersZipdump(
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$sZipDumpImportWarn, $sZipDumpExportWarn
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) {
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//
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// $cfg['ZipDump']
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// requires zip_open in import
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//
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if ($this->cfg->getValue('ZipDump') && !@function_exists('zip_open')) {
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PMA_messagesSet(
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'error',
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'ZipDump_import',
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PMA_lang(PMA_langName('ZipDump')),
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PMA_lang($sZipDumpImportWarn, 'zip_open')
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);
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}
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//
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// $cfg['ZipDump']
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// requires gzcompress in export
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//
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if ($this->cfg->getValue('ZipDump') && !@function_exists('gzcompress')) {
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PMA_messagesSet(
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'error',
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'ZipDump_export',
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PMA_lang(PMA_langName('ZipDump')),
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PMA_lang($sZipDumpExportWarn, 'gzcompress')
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);
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}
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}
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/**
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* Check config of servers
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*
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* @param boolean $cookieAuthUsed Cookie auth is used
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* @param boolean $blowfishSecretSet Blowfish secret set
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* @param string $sBlowfishSecretMsg Blowfish secret message
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* @param string $blowfishSecret Blowfish secret
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*
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* @return array
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*/
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protected function performConfigChecksCookieAuthUsed(
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$cookieAuthUsed, $blowfishSecretSet, $sBlowfishSecretMsg,
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$blowfishSecret
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) {
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//
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// $cfg['blowfish_secret']
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// it's required for 'cookie' authentication
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//
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if ($cookieAuthUsed) {
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if ($blowfishSecretSet) {
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// 'cookie' auth used, blowfish_secret was generated
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PMA_messagesSet(
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'notice',
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'blowfish_secret_created',
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PMA_lang(PMA_langName('blowfish_secret')),
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PMA_lang($sBlowfishSecretMsg)
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);
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} else {
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$blowfishWarnings = array();
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// check length
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if (/*overload*/mb_strlen($blowfishSecret) < 8) {
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// too short key
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$blowfishWarnings[] = __('Key is too short, it should have at least 8 characters.');
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}
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// check used characters
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$hasDigits = (bool)preg_match('/\d/', $blowfishSecret);
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$hasChars = (bool)preg_match('/\S/', $blowfishSecret);
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$hasNonword = (bool)preg_match('/\W/', $blowfishSecret);
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if (!$hasDigits || !$hasChars || !$hasNonword) {
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$blowfishWarnings[] = PMA_lang(__('Key should contain letters, numbers [em]and[/em] special characters.'));
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}
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if (!empty($blowfishWarnings)) {
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PMA_messagesSet(
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'error',
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'blowfish_warnings' . count($blowfishWarnings),
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PMA_lang(PMA_langName('blowfish_secret')),
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implode('<br />', $blowfishWarnings)
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);
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}
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}
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}
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}
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/**
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* Define all messages
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*
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* @return array
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*/
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protected static function defineMessages()
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{
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$sAllowArbitraryServerWarn = __('This %soption%s should be disabled as it allows attackers to bruteforce login to any MySQL server. If you feel this is necessary, use %srestrict login to MySQL server%s or %strusted proxies list%s. However, IP-based protection with trusted proxies list may not be reliable if your IP belongs to an ISP where thousands of users, including you, are connected to.');
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$sAllowArbitraryServerWarn = sprintf(
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$sAllowArbitraryServerWarn,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]',
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]',
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]'
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);
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$sBlowfishSecretMsg = __('You didn\'t have blowfish secret set and have enabled [kbd]cookie[/kbd] authentication, so a key was automatically generated for you. It is used to encrypt cookies; you don\'t need to remember it.');
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$sBZipDumpWarning = __('%sBzip2 compression and decompression%s requires functions (%s) which are unavailable on this system.');
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$sBZipDumpWarning = sprintf(
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$sBZipDumpWarning,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Import_export]',
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'[/a]', '%s'
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);
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$sDirectoryNotice = __('This value should be double checked to ensure that this directory is neither world accessible nor readable or writable by other users on your server.');
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$sForceSSLNotice = __('This %soption%s should be enabled if your web server supports it.');
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$sForceSSLNotice = sprintf(
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$sForceSSLNotice,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]'
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);
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$sGZipDumpWarning = __('%sGZip compression and decompression%s requires functions (%s) which are unavailable on this system.');
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$sGZipDumpWarning = sprintf(
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$sGZipDumpWarning,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Import_export]',
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'[/a]',
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'%s'
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);
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$sLoginCookieValidityWarn = __('%sLogin cookie validity%s greater than %ssession.gc_maxlifetime%s may cause random session invalidation (currently session.gc_maxlifetime is %d).');
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$sLoginCookieValidityWarn = sprintf(
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$sLoginCookieValidityWarn,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]',
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'[a@' . PMA_getPHPDocLink(
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'session.configuration.php#ini.session.gc-maxlifetime'
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) . ']',
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'[/a]',
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ini_get('session.gc_maxlifetime')
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);
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$sLoginCookieValidityWarn2 = __('%sLogin cookie validity%s should be set to 1800 seconds (30 minutes) at most. Values larger than 1800 may pose a security risk such as impersonation.');
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$sLoginCookieValidityWarn2 = sprintf(
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$sLoginCookieValidityWarn2,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]'
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);
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$sLoginCookieValidityWarn3 = __('If using [kbd]cookie[/kbd] authentication and %sLogin cookie store%s is not 0, %sLogin cookie validity%s must be set to a value less or equal to it.');
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$sLoginCookieValidityWarn3 = sprintf(
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$sLoginCookieValidityWarn3,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]',
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]'
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);
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$sSecurityInfoMsg = __('If you feel this is necessary, use additional protection settings - %shost authentication%s settings and %strusted proxies list%s. However, IP-based protection may not be reliable if your IP belongs to an ISP where thousands of users, including you, are connected to.');
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$sSecurityInfoMsg = sprintf(
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$sSecurityInfoMsg,
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'[a@?page=servers' . PMA_URL_getCommon(array(), 'html', '&') . '&mode=edit&id=%1$d#tab_Server_config]',
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'[/a]',
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Security]',
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'[/a]'
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);
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$sServerAuthConfigMsg = __('You set the [kbd]config[/kbd] authentication type and included username and password for auto-login, which is not a desirable option for live hosts. Anyone who knows or guesses your phpMyAdmin URL can directly access your phpMyAdmin panel. Set %sauthentication type%s to [kbd]cookie[/kbd] or [kbd]http[/kbd].');
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$sServerAuthConfigMsg = sprintf(
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$sServerAuthConfigMsg,
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'[a@?page=servers' . PMA_URL_getCommon(array(), 'html', '&') . '&mode=edit&id=%1$d#tab_Server]',
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'[/a]'
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);
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$sZipDumpExportWarn = __('%sZip compression%s requires functions (%s) which are unavailable on this system.');
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$sZipDumpExportWarn = sprintf(
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$sZipDumpExportWarn,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Import_export]',
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'[/a]',
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'%s'
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);
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$sZipDumpImportWarn = __('%sZip decompression%s requires functions (%s) which are unavailable on this system.');
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$sZipDumpImportWarn = sprintf(
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$sZipDumpImportWarn,
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'[a@?page=form' . PMA_URL_getCommon(array(), 'html', '&') . '&formset=Features#tab_Import_export]',
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'[/a]',
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'%s'
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);
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return array(
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$sAllowArbitraryServerWarn, $sBlowfishSecretMsg, $sBZipDumpWarning,
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$sDirectoryNotice, $sForceSSLNotice, $sGZipDumpWarning,
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$sLoginCookieValidityWarn, $sLoginCookieValidityWarn2,
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$sLoginCookieValidityWarn3, $sSecurityInfoMsg, $sServerAuthConfigMsg,
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$sZipDumpExportWarn, $sZipDumpImportWarn
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);
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}
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/**
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* Check configuration for login cookie
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*
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* @param string $sLoginCookieValidityWarn Warning 1 for login cookie validity
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* @param string $sLoginCookieValidityWarn2 Warning 2 for login cookie validity
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* @param string $sLoginCookieValidityWarn3 Warning 3 for login cookie validity
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|
*
|
|
* @return void
|
|
*/
|
|
protected function performConfigChecksLoginCookie(
|
|
$sLoginCookieValidityWarn, $sLoginCookieValidityWarn2,
|
|
$sLoginCookieValidityWarn3
|
|
) {
|
|
//
|
|
// $cfg['LoginCookieValidity']
|
|
// value greater than session.gc_maxlifetime will cause
|
|
// random session invalidation after that time
|
|
$loginCookieValidity = $this->cfg->getValue('LoginCookieValidity');
|
|
if ($loginCookieValidity > ini_get('session.gc_maxlifetime')
|
|
) {
|
|
PMA_messagesSet(
|
|
'error',
|
|
'LoginCookieValidity',
|
|
PMA_lang(PMA_langName('LoginCookieValidity')),
|
|
PMA_lang($sLoginCookieValidityWarn)
|
|
);
|
|
}
|
|
|
|
//
|
|
// $cfg['LoginCookieValidity']
|
|
// should be at most 1800 (30 min)
|
|
//
|
|
if ($loginCookieValidity > 1800) {
|
|
PMA_messagesSet(
|
|
'notice',
|
|
'LoginCookieValidity',
|
|
PMA_lang(PMA_langName('LoginCookieValidity')),
|
|
PMA_lang($sLoginCookieValidityWarn2)
|
|
);
|
|
}
|
|
|
|
//
|
|
// $cfg['LoginCookieValidity']
|
|
// $cfg['LoginCookieStore']
|
|
// LoginCookieValidity must be less or equal to LoginCookieStore
|
|
//
|
|
if (($this->cfg->getValue('LoginCookieStore') != 0)
|
|
&& ($loginCookieValidity > $this->cfg->getValue('LoginCookieStore'))
|
|
) {
|
|
PMA_messagesSet(
|
|
'error',
|
|
'LoginCookieValidity',
|
|
PMA_lang(PMA_langName('LoginCookieValidity')),
|
|
PMA_lang($sLoginCookieValidityWarn3)
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check GZipDump configuration
|
|
*
|
|
* @param string $sBZipDumpWarn Warning for BZipDumpWarning
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function performConfigChecksServerBZipdump($sBZipDumpWarn)
|
|
{
|
|
//
|
|
// $cfg['BZipDump']
|
|
// requires bzip2 functions
|
|
//
|
|
if ($this->cfg->getValue('BZipDump')
|
|
&& (!@function_exists('bzopen') || !@function_exists('bzcompress'))
|
|
) {
|
|
$functions = @function_exists('bzopen')
|
|
? '' :
|
|
'bzopen';
|
|
$functions .= @function_exists('bzcompress')
|
|
? ''
|
|
: ($functions ? ', ' : '') . 'bzcompress';
|
|
PMA_messagesSet(
|
|
'error',
|
|
'BZipDump',
|
|
PMA_lang(PMA_langName('BZipDump')),
|
|
PMA_lang($sBZipDumpWarn, $functions)
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check GZipDump configuration
|
|
*
|
|
* @param string $sGZipDumpWarn Warning for GZipDumpWarning
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function performConfigChecksServerGZipdump($sGZipDumpWarn)
|
|
{
|
|
//
|
|
// $cfg['GZipDump']
|
|
// requires zlib functions
|
|
//
|
|
if ($this->cfg->getValue('GZipDump')
|
|
&& (@!function_exists('gzopen') || @!function_exists('gzencode'))
|
|
) {
|
|
PMA_messagesSet(
|
|
'error',
|
|
'GZipDump',
|
|
PMA_lang(PMA_langName('GZipDump')),
|
|
PMA_lang($sGZipDumpWarn, 'gzencode')
|
|
);
|
|
}
|
|
}
|
|
}
|