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rcube_install.php
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<?php
/*
+-----------------------------------------------------------------------+
| rcube_install.php |
| |
| This file is part of the Roundcube Webmail package |
| Copyright (C) 2008-2009, The Roundcube Dev Team |
| Licensed under the GNU Public License |
+-----------------------------------------------------------------------+
$Id: $
*/
/**
* Class to control the installation process of the Roundcube Webmail package
*
* @category Install
* @package Roundcube
* @author Thomas Bruederli
*/
class rcube_install
{
var $step;
var $is_post = false;
var $failures = 0;
var $config = array();
var $configured = false;
var $last_error = null;
var $email_pattern = '([a-z0-9][a-z0-9\-\.\+\_]*@[a-z0-9]([a-z0-9\-][.]?)*[a-z0-9])';
var $bool_config_props = array();
var $obsolete_config = array('db_backend');
var $replaced_config = array(
'skin_path' => 'skin',
'locale_string' => 'language',
'multiple_identities' => 'identities_level',
'addrbook_show_images' => 'show_images',
'imap_root' => 'imap_ns_personal',
);
// these config options are required for a working system
var $required_config = array('db_dsnw', 'db_table_contactgroups', 'db_table_contactgroupmembers', 'des_key');
/**
* Constructor
*/
function rcube_install()
{
$this->step = intval($_REQUEST['_step']);
$this->is_post = $_SERVER['REQUEST_METHOD'] == 'POST';
}
/**
* Singleton getter
*/
function get_instance()
{
static $inst;
if (!$inst)
$inst = new rcube_install();
return $inst;
}
/**
* Read the default config files and store properties
*/
function load_defaults()
{
$this->_load_config('.php.dist');
}
/**
* Read the local config files and store properties
*/
function load_config()
{
$this->config = array();
$this->_load_config('.php');
$this->configured = !empty($this->config);
}
/**
* Read the default config file and store properties
* @access private
*/
function _load_config($suffix)
{
@include RCMAIL_CONFIG_DIR . '/main.inc' . $suffix;
if (is_array($rcmail_config)) {
$this->config += $rcmail_config;
}
@include RCMAIL_CONFIG_DIR . '/db.inc'. $suffix;
if (is_array($rcmail_config)) {
$this->config += $rcmail_config;
}
}
/**
* Getter for a certain config property
*
* @param string Property name
* @param string Default value
* @return string The property value
*/
function getprop($name, $default = '')
{
$value = $this->config[$name];
if ($name == 'des_key' && !$this->configured && !isset($_REQUEST["_$name"]))
$value = rcube_install::random_key(24);
return $value !== null && $value !== '' ? $value : $default;
}
/**
* Take the default config file and replace the parameters
* with the submitted form data
*
* @param string Which config file (either 'main' or 'db')
* @return string The complete config file content
*/
function create_config($which, $force = false)
{
$out = @file_get_contents(RCMAIL_CONFIG_DIR . "/{$which}.inc.php.dist");
if (!$out)
return '[Warning: could not read the config template file]';
foreach ($this->config as $prop => $default) {
$value = (isset($_POST["_$prop"]) || $this->bool_config_props[$prop]) ? $_POST["_$prop"] : $default;
// convert some form data
if ($prop == 'debug_level') {
$val = 0;
if (is_array($value))
foreach ($value as $dbgval)
$val += intval($dbgval);
$value = $val;
}
else if ($which == 'db' && $prop == 'db_dsnw' && !empty($_POST['_dbtype'])) {
if ($_POST['_dbtype'] == 'sqlite')
$value = sprintf('%s://%s?mode=0646', $_POST['_dbtype'], $_POST['_dbname']{0} == '/' ? '/' . $_POST['_dbname'] : $_POST['_dbname']);
else
$value = sprintf('%s://%s:%s@%s/%s', $_POST['_dbtype'],
rawurlencode($_POST['_dbuser']), rawurlencode($_POST['_dbpass']), $_POST['_dbhost'], $_POST['_dbname']);
}
else if ($prop == 'smtp_auth_type' && $value == '0') {
$value = '';
}
else if ($prop == 'default_host' && is_array($value)) {
$value = rcube_install::_clean_array($value);
if (count($value) <= 1)
$value = $value[0];
}
else if ($prop == 'pagesize') {
$value = max(2, intval($value));
}
else if ($prop == 'smtp_user' && !empty($_POST['_smtp_user_u'])) {
$value = '%u';
}
else if ($prop == 'smtp_pass' && !empty($_POST['_smtp_user_u'])) {
$value = '%p';
}
else if ($prop == 'default_imap_folders') {
$value = Array();
foreach ($this->config['default_imap_folders'] as $_folder) {
switch($_folder) {
case 'Drafts': $_folder = $this->config['drafts_mbox']; break;
case 'Sent': $_folder = $this->config['sent_mbox']; break;
case 'Junk': $_folder = $this->config['junk_mbox']; break;
case 'Trash': $_folder = $this->config['trash_mbox']; break;
}
if (!in_array($_folder, $value))
$value[] = $_folder;
}
}
else if (is_bool($default)) {
$value = (bool)$value;
}
else if (is_numeric($value)) {
$value = intval($value);
}
// skip this property
if (!$force && ($value == $default))
continue;
// save change
$this->config[$prop] = $value;
// replace the matching line in config file
$out = preg_replace(
'/(\$rcmail_config\[\''.preg_quote($prop).'\'\])\s+=\s+(.+);/Uie',
"'\\1 = ' . rcube_install::_dump_var(\$value) . ';'",
$out);
}
return trim($out);
}
/**
* Check the current configuration for missing properties
* and deprecated or obsolete settings
*
* @return array List with problems detected
*/
function check_config()
{
$this->config = array();
$this->load_defaults();
$defaults = $this->config;
$this->load_config();
if (!$this->configured)
return null;
$out = $seen = array();
$required = array_flip($this->required_config);
// iterate over the current configuration
foreach ($this->config as $prop => $value) {
if ($replacement = $this->replaced_config[$prop]) {
$out['replaced'][] = array('prop' => $prop, 'replacement' => $replacement);
$seen[$replacement] = true;
}
else if (!$seen[$prop] && in_array($prop, $this->obsolete_config)) {
$out['obsolete'][] = array('prop' => $prop);
$seen[$prop] = true;
}
}
// iterate over default config
foreach ($defaults as $prop => $value) {
if (!isset($seen[$prop]) && !isset($this->config[$prop]) && isset($required[$prop]))
$out['missing'][] = array('prop' => $prop);
}
// check config dependencies and contradictions
if ($this->config['enable_spellcheck'] && $this->config['spellcheck_engine'] == 'pspell') {
if (!extension_loaded('pspell')) {
$out['dependencies'][] = array('prop' => 'spellcheck_engine',
'explain' => 'This requires the <tt>pspell</tt> extension which could not be loaded.');
}
else if (!empty($this->config['spellcheck_languages'])) {
foreach ($this->config['spellcheck_languages'] as $lang => $descr)
if (!pspell_new($lang))
$out['dependencies'][] = array('prop' => 'spellcheck_languages',
'explain' => "You are missing pspell support for language $lang ($descr)");
}
}
if ($this->config['log_driver'] == 'syslog') {
if (!function_exists('openlog')) {
$out['dependencies'][] = array('prop' => 'log_driver',
'explain' => 'This requires the <tt>sylog</tt> extension which could not be loaded.');
}
if (empty($this->config['syslog_id'])) {
$out['dependencies'][] = array('prop' => 'syslog_id',
'explain' => 'Using <tt>syslog</tt> for logging requires a syslog ID to be configured');
}
}
// check ldap_public sources having global_search enabled
if (is_array($this->config['ldap_public']) && !is_array($this->config['autocomplete_addressbooks'])) {
foreach ($this->config['ldap_public'] as $ldap_public) {
if ($ldap_public['global_search']) {
$out['replaced'][] = array('prop' => 'ldap_public::global_search', 'replacement' => 'autocomplete_addressbooks');
break;
}
}
}
return $out;
}
/**
* Merge the current configuration with the defaults
* and copy replaced values to the new options.
*/
function merge_config()
{
$current = $this->config;
$this->config = array();
$this->load_defaults();
foreach ($this->replaced_config as $prop => $replacement)
if (isset($current[$prop])) {
if ($prop == 'skin_path')
$this->config[$replacement] = preg_replace('#skins/(\w+)/?$#', '\\1', $current[$prop]);
else if ($prop == 'multiple_identities')
$this->config[$replacement] = $current[$prop] ? 2 : 0;
else
$this->config[$replacement] = $current[$prop];
unset($current[$prop]);
}
foreach ($this->obsolete_config as $prop) {
unset($current[$prop]);
}
// add all ldap_public sources having global_search enabled to autocomplete_addressbooks
if (is_array($current['ldap_public'])) {
foreach ($current['ldap_public'] as $key => $ldap_public) {
if ($ldap_public['global_search']) {
$this->config['autocomplete_addressbooks'][] = $key;
unset($current['ldap_public'][$key]['global_search']);
}
}
}
$this->config = array_merge($this->config, $current);
foreach ((array)$current['ldap_public'] as $key => $values) {
$this->config['ldap_public'][$key] = $current['ldap_public'][$key];
}
}
/**
* Compare the local database schema with the reference schema
* required for this version of Roundcube
*
* @param boolean True if the schema schould be updated
* @return boolean True if the schema is up-to-date, false if not or an error occured
*/
function db_schema_check($DB, $update = false)
{
if (!$this->configured)
return false;
// simple ad hand-made db schema
$db_schema = array(
'users' => array(),
'identities' => array(),
'contacts' => array(),
'contactgroups' => array(),
'contactgroupmembers' => array(),
'cache' => array(),
'messages' => array(),
'session' => array(),
);
$errors = array();
// check list of tables
$existing_tables = $DB->list_tables();
foreach ($db_schema as $table => $cols) {
$table = !empty($this->config['db_table_'.$table]) ? $this->config['db_table_'.$table] : $table;
if (!in_array($table, $existing_tables))
$errors[] = "Missing table ".$table;
// TODO: check cols and indices
}
return !empty($errors) ? $errors : false;
}
/**
* Compare the local database schema with the reference schema
* required for this version of Roundcube
*
* @param boolean True if the schema schould be updated
* @return boolean True if the schema is up-to-date, false if not or an error occured
*/
function mdb2_schema_check($update = false)
{
if (!$this->configured)
return false;
$options = array(
'use_transactions' => false,
'log_line_break' => "\n",
'idxname_format' => '%s',
'debug' => false,
'quote_identifier' => true,
'force_defaults' => false,
'portability' => true
);
$dsnw = $this->config['db_dsnw'];
$schema = MDB2_Schema::factory($dsnw, $options);
$schema->db->supported['transactions'] = false;
if (PEAR::isError($schema)) {
$this->raise_error(array('code' => $schema->getCode(), 'message' => $schema->getMessage() . ' ' . $schema->getUserInfo()));
return false;
}
else {
$definition = $schema->getDefinitionFromDatabase();
$definition['charset'] = 'utf8';
if (PEAR::isError($definition)) {
$this->raise_error(array('code' => $definition->getCode(), 'message' => $definition->getMessage() . ' ' . $definition->getUserInfo()));
return false;
}
// load reference schema
$dsn_arr = MDB2::parseDSN($this->config['db_dsnw']);
$ref_schema = INSTALL_PATH . 'SQL/' . $dsn_arr['phptype'] . '.schema.xml';
if (is_readable($ref_schema)) {
$reference = $schema->parseDatabaseDefinition($ref_schema, false, array(), $schema->options['fail_on_invalid_names']);
if (PEAR::isError($reference)) {
$this->raise_error(array('code' => $reference->getCode(), 'message' => $reference->getMessage() . ' ' . $reference->getUserInfo()));
}
else {
$diff = $schema->compareDefinitions($reference, $definition);
if (empty($diff)) {
return true;
}
else if ($update) {
// update database schema with the diff from the above check
$success = $schema->alterDatabase($reference, $definition, $diff);
if (PEAR::isError($success)) {
$this->raise_error(array('code' => $success->getCode(), 'message' => $success->getMessage() . ' ' . $success->getUserInfo()));
}
else
return true;
}
echo '<pre>'; var_dump($diff); echo '</pre>';
return false;
}
}
else
$this->raise_error(array('message' => "Could not find reference schema file ($ref_schema)"));
return false;
}
return false;
}
/**
* Getter for the last error message
*
* @return string Error message or null if none exists
*/
function get_error()
{
return $this->last_error['message'];
}
/**
* Return a list with all imap hosts configured
*
* @return array Clean list with imap hosts
*/
function get_hostlist()
{
$default_hosts = (array)$this->getprop('default_host');
$out = array();
foreach ($default_hosts as $key => $name) {
if (!empty($name))
$out[] = rcube_parse_host(is_numeric($key) ? $name : $key);
}
return $out;
}
/**
* Display OK status
*
* @param string Test name
* @param string Confirm message
*/
function pass($name, $message = '')
{
echo Q($name) . ':&nbsp; <span class="success">OK</span>';
$this->_showhint($message);
}
/**
* Display an error status and increase failure count
*
* @param string Test name
* @param string Error message
* @param string URL for details
*/
function fail($name, $message = '', $url = '')
{
$this->failures++;
echo Q($name) . ':&nbsp; <span class="fail">NOT OK</span>';
$this->_showhint($message, $url);
}
/**
* Display an error status for optional settings/features
*
* @param string Test name
* @param string Error message
* @param string URL for details
*/
function optfail($name, $message = '', $url = '')
{
echo Q($name) . ':&nbsp; <span class="na">NOT OK</span>';
$this->_showhint($message, $url);
}
/**
* Display warning status
*
* @param string Test name
* @param string Warning message
* @param string URL for details
*/
function na($name, $message = '', $url = '')
{
echo Q($name) . ':&nbsp; <span class="na">NOT AVAILABLE</span>';
$this->_showhint($message, $url);
}
function _showhint($message, $url = '')
{
$hint = Q($message);
if ($url)
$hint .= ($hint ? '; ' : '') . 'See <a href="' . Q($url) . '" target="_blank">' . Q($url) . '</a>';
if ($hint)
echo '<span class="indent">(' . $hint . ')</span>';
}
static function _clean_array($arr)
{
$out = array();
foreach (array_unique($arr) as $k => $val) {
if (!empty($val)) {
if (is_numeric($k))
$out[] = $val;
else
$out[$k] = $val;
}
}
return $out;
}
static function _dump_var($var) {
if (is_array($var)) {
if (empty($var)) {
return 'array()';
}
else { // check if all keys are numeric
$isnum = true;
foreach ($var as $key => $value) {
if (!is_numeric($key)) {
$isnum = false;
break;
}
}
if ($isnum)
return 'array(' . join(', ', array_map(array('rcube_install', '_dump_var'), $var)) . ')';
}
}
return var_export($var, true);
}
/**
* Initialize the database with the according schema
*
* @param object rcube_db Database connection
* @return boolen True on success, False on error
*/
function init_db($DB)
{
$db_map = array('pgsql' => 'postgres', 'mysqli' => 'mysql');
$engine = isset($db_map[$DB->db_provider]) ? $db_map[$DB->db_provider] : $DB->db_provider;
// read schema file from /SQL/*
$fname = "../SQL/$engine.initial.sql";
if ($lines = @file($fname, FILE_SKIP_EMPTY_LINES)) {
$buff = '';
foreach ($lines as $i => $line) {
if (preg_match('/^--/', $line))
continue;
$buff .= $line . "\n";
if (preg_match('/;$/', trim($line))) {
$DB->query($buff);
$buff = '';
if ($this->get_error())
break;
}
}
}
else {
$this->fail('DB Schema', "Cannot read the schema file: $fname");
return false;
}
if ($err = $this->get_error()) {
$this->fail('DB Schema', "Error creating database schema: $err");
return false;
}
return true;
}
/**
* Handler for Roundcube errors
*/
function raise_error($p)
{
$this->last_error = $p;
}
/**
* Generarte a ramdom string to be used as encryption key
*
* @param int Key length
* @return string The generated random string
* @static
*/
function random_key($length)
{
$alpha = 'ABCDEFGHIJKLMNOPQERSTUVXYZabcdefghijklmnopqrtsuvwxyz0123456789+*%&?!$-_=';
$out = '';
for ($i=0; $i < $length; $i++)
$out .= $alpha{rand(0, strlen($alpha)-1)};
return $out;
}
}

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