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< ? php
/**
* StatusNet - the distributed open - source microblogging tool
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* Copyright ( C ) 2009 - 2010 , StatusNet , Inc .
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*
* This program is free software : you can redistribute it and / or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation , either version 3 of the License , or
* ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU Affero General Public License for more details .
*
* You should have received a copy of the GNU Affero General Public License
* along with this program . If not , see < http :// www . gnu . org / licenses />.
*
* @ category Installation
* @ package Installation
*
* @ author Adrian Lang < mail @ adrianlang . de >
* @ author Brenda Wallace < shiny @ cpan . org >
* @ author Brett Taylor < brett @ webfroot . co . nz >
* @ author Brion Vibber < brion @ pobox . com >
* @ author CiaranG < ciaran @ ciarang . com >
* @ author Craig Andrews < candrews @ integralblue . com >
* @ author Eric Helgeson < helfire @ Erics - MBP . local >
* @ author Evan Prodromou < evan @ status . net >
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* @ author Mikael Nordfeldth < mmn @ hethane . se >
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* @ author Robin Millette < millette @ controlyourself . ca >
* @ author Sarven Capadisli < csarven @ status . net >
* @ author Tom Adams < tom @ holizz . com >
* @ author Zach Copley < zach @ status . net >
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* @ copyright 2009 - 2010 StatusNet , Inc http :// status . net
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* @ copyright 2009 - 2014 Free Software Foundation , Inc http :// www . fsf . org
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* @ license GNU Affero General Public License http :// www . gnu . org / licenses /
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* @ version 1.0 . x
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* @ link http :// status . net
*/
abstract class Installer
{
/** Web site info */
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public $sitename , $server , $path , $fancy , $siteProfile , $ssl ;
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/** DB info */
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public $host , $database , $dbtype , $username , $password , $db ;
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/** Storage info */
public $avatarDir , $fileDir ;
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/** Administrator info */
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public $adminNick , $adminPass , $adminEmail ;
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/** Should we skip writing the configuration file? */
public $skipConfig = false ;
public static $dbModules = array (
'mysql' => array (
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'name' => 'MariaDB 10.3+' ,
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'check_module' => 'mysqli' ,
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'scheme' => 'mysqli' , // DSN prefix for PEAR::DB
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),
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/* 'pgsql' => array (
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'name' => 'PostgreSQL' ,
'check_module' => 'pgsql' ,
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'scheme' => 'pgsql' , // DSN prefix for PEAR::DB
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), */
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);
/**
* Attempt to include a PHP file and report if it worked , while
* suppressing the annoying warning messages on failure .
*/
private function haveIncludeFile ( $filename ) {
$old = error_reporting ( error_reporting () & ~ E_WARNING );
$ok = include_once ( $filename );
error_reporting ( $old );
return $ok ;
}
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/**
* Check if all is ready for installation
*
* @ return void
*/
function checkPrereqs ()
{
$pass = true ;
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$config = INSTALLDIR . '/config.php' ;
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if ( ! $this -> skipConfig && file_exists ( $config )) {
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if ( ! is_writable ( $config ) || filesize ( $config ) > 0 ) {
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if ( filesize ( $config ) == 0 ) {
$this -> warning ( 'Config file "config.php" already exists and is empty, but is not writable.' );
} else {
$this -> warning ( 'Config file "config.php" already exists.' );
}
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$pass = false ;
}
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}
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if ( version_compare ( PHP_VERSION , '5.5.0' , '<' )) {
$this -> warning ( 'Require PHP version 5.5.0 or greater.' );
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$pass = false ;
}
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$reqs = array ( 'gd' , 'curl' , 'intl' , 'json' ,
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'xmlwriter' , 'mbstring' , 'xml' , 'dom' , 'simplexml' );
foreach ( $reqs as $req ) {
if ( ! $this -> checkExtension ( $req )) {
$this -> warning ( sprintf ( 'Cannot load required extension: <code>%s</code>' , $req ));
$pass = false ;
}
}
// Make sure we have at least one database module available
$missingExtensions = array ();
foreach ( self :: $dbModules as $type => $info ) {
if ( ! $this -> checkExtension ( $info [ 'check_module' ])) {
$missingExtensions [] = $info [ 'check_module' ];
}
}
if ( count ( $missingExtensions ) == count ( self :: $dbModules )) {
$req = implode ( ', ' , $missingExtensions );
$this -> warning ( sprintf ( 'Cannot find a database extension. You need at least one of %s.' , $req ));
$pass = false ;
}
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// @fixme this check seems to be insufficient with Windows ACLs
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if ( ! $this -> skipConfig && ! is_writable ( INSTALLDIR )) {
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$this -> warning ( sprintf ( 'Cannot write config file to: <code>%s</code></p>' , INSTALLDIR ),
sprintf ( 'On your server, try this command: <code>chmod a+w %s</code>' , INSTALLDIR ));
$pass = false ;
}
// Check the subdirs used for file uploads
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// TODO get another flag for this --skipFileSubdirCreation
if ( ! $this -> skipConfig ) {
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define ( 'GNUSOCIAL' , true );
define ( 'STATUSNET' , true );
require_once INSTALLDIR . '/lib/language.php' ;
$_server = $this -> server ; $_path = $this -> path ; // We won't be using those so it's safe to do this small hack
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require_once INSTALLDIR . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'util.php' ;
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require_once INSTALLDIR . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'default.php' ;
$fileSubdirs = [ empty ( $this -> avatarDir ) ? $default [ 'avatar' ][ 'dir' ] : $this -> avatarDir ,
empty ( $this -> fileDir ) ? $default [ 'attachments' ][ 'dir' ] : $this -> fileDir ];
unset ( $default );
foreach ( $fileSubdirs as $fileFullPath ) {
if ( ! file_exists ( $fileFullPath )) {
$pass = $pass && mkdir ( $fileFullPath );
} elseif ( ! is_dir ( $fileFullPath )) {
$this -> warning ( sprintf ( 'GNU social expected a directory but found something else on this path: %s' , $fileFullPath ),
'Either make sure it goes to a directory or remove it and a directory will be created.' );
$pass = false ;
} elseif ( ! is_writable ( $fileFullPath )) {
$this -> warning ( sprintf ( 'Cannot write to %s directory: <code>%s</code>' , $fileSubdir , $fileFullPath ),
sprintf ( 'On your server, try this command: <code>chmod a+w %s</code>' , $fileFullPath ));
$pass = false ;
}
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}
}
return $pass ;
}
/**
* Checks if a php extension is both installed and loaded
*
* @ param string $name of extension to check
*
* @ return boolean whether extension is installed and loaded
*/
function checkExtension ( $name )
{
if ( extension_loaded ( $name )) {
return true ;
} elseif ( function_exists ( 'dl' ) && ini_get ( 'enable_dl' ) && ! ini_get ( 'safe_mode' )) {
// dl will throw a fatal error if it's disabled or we're in safe mode.
// More fun, it may not even exist under some SAPIs in 5.3.0 or later...
$soname = $name . '.' . PHP_SHLIB_SUFFIX ;
if ( PHP_SHLIB_SUFFIX == 'dll' ) {
$soname = " php_ " . $soname ;
}
return @ dl ( $soname );
} else {
return false ;
}
}
/**
* Basic validation on the database paramters
* Side effects : error output if not valid
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*
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* @ return boolean success
*/
function validateDb ()
{
$fail = false ;
if ( empty ( $this -> host )) {
$this -> updateStatus ( " No hostname specified. " , true );
$fail = true ;
}
if ( empty ( $this -> database )) {
$this -> updateStatus ( " No database specified. " , true );
$fail = true ;
}
if ( empty ( $this -> username )) {
$this -> updateStatus ( " No username specified. " , true );
$fail = true ;
}
if ( empty ( $this -> sitename )) {
$this -> updateStatus ( " No sitename specified. " , true );
$fail = true ;
}
return ! $fail ;
}
/**
* Basic validation on the administrator user paramters
* Side effects : error output if not valid
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*
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* @ return boolean success
*/
function validateAdmin ()
{
$fail = false ;
if ( empty ( $this -> adminNick )) {
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$this -> updateStatus ( " No initial user nickname specified. " , true );
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$fail = true ;
}
if ( $this -> adminNick && ! preg_match ( '/^[0-9a-z]{1,64}$/' , $this -> adminNick )) {
$this -> updateStatus ( 'The user nickname "' . htmlspecialchars ( $this -> adminNick ) .
'" is invalid; should be plain letters and numbers no longer than 64 characters.' , true );
$fail = true ;
}
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// @fixme hardcoded list; should use Nickname::isValid()
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// if/when it's safe to have loaded the infrastructure here
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$blacklist = array ( 'main' , 'panel' , 'twitter' , 'settings' , 'rsd.xml' , 'favorited' , 'featured' , 'favoritedrss' , 'featuredrss' , 'rss' , 'getfile' , 'api' , 'groups' , 'group' , 'peopletag' , 'tag' , 'user' , 'message' , 'conversation' , 'notice' , 'attachment' , 'search' , 'index.php' , 'doc' , 'opensearch' , 'robots.txt' , 'xd_receiver.html' , 'facebook' , 'activity' );
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if ( in_array ( $this -> adminNick , $blacklist )) {
$this -> updateStatus ( 'The user nickname "' . htmlspecialchars ( $this -> adminNick ) .
'" is reserved.' , true );
$fail = true ;
}
if ( empty ( $this -> adminPass )) {
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$this -> updateStatus ( " No initial user password specified. " , true );
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$fail = true ;
}
return ! $fail ;
}
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/**
* Make sure a site profile was selected
*
* @ return type boolean success
*/
function validateSiteProfile ()
{
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if ( empty ( $this -> siteProfile )) {
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$this -> updateStatus ( " No site profile selected. " , true );
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return false ;
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}
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return true ;
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}
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/**
* Set up the database with the appropriate function for the selected type ...
* Saves database info into $this -> db .
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*
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* @ fixme escape things in the connection string in case we have a funny pass etc
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* @ return mixed array of database connection params on success , false on failure
*/
function setupDatabase ()
{
if ( $this -> db ) {
throw new Exception ( " Bad order of operations: DB already set up. " );
}
$this -> updateStatus ( " Starting installation... " );
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if ( empty ( $this -> password )) {
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$auth = '' ;
} else {
$auth = " : $this->password " ;
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}
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$scheme = self :: $dbModules [ $this -> dbtype ][ 'scheme' ];
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$dsn = " { $scheme } :// { $this -> username } { $auth } @ { $this -> host } / { $this -> database } " ;
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$this -> updateStatus ( " Checking database... " );
$conn = $this -> connectDatabase ( $dsn );
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if ( ! $conn instanceof DB_common ) {
// Is not the right instance
throw new Exception ( 'Cannot connect to database: ' . $conn -> getMessage ());
}
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// ensure database encoding is UTF8
if ( $this -> dbtype == 'mysql' ) {
// @fixme utf8m4 support for mysql 5.5?
// Force the comms charset to utf8 for sanity
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// This doesn't currently work. :P
//$conn->executes('set names utf8');
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} else if ( $this -> dbtype == 'pgsql' ) {
$record = $conn -> getRow ( 'SHOW server_encoding' );
if ( $record -> server_encoding != 'UTF8' ) {
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$this -> updateStatus ( " GNU social requires UTF8 character encoding. Your database is " . htmlentities ( $record -> server_encoding ));
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return false ;
}
}
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$res = $this -> updateStatus ( " Creating database tables... " );
if ( ! $this -> createCoreTables ( $conn )) {
$this -> updateStatus ( " Error creating tables. " , true );
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return false ;
}
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foreach ( array ( 'sms_carrier' => 'SMS carrier' ,
'notice_source' => 'notice source' ,
'foreign_services' => 'foreign service' )
as $scr => $name ) {
$this -> updateStatus ( sprintf ( " Adding %s data to database... " , $name ));
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$res = $this -> runDbScript ( $scr . '.sql' , $conn );
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if ( $res === false ) {
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$this -> updateStatus ( sprintf ( " Can't run %s script. " , $name ), true );
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return false ;
}
}
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$db = array ( 'type' => $this -> dbtype , 'database' => $dsn );
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return $db ;
}
/**
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* Open a connection to the database .
*
* @ param < type > $dsn
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* @ return < type >
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*/
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function connectDatabase ( $dsn )
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{
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global $_DB ;
return $_DB -> connect ( $dsn );
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}
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/**
* Create core tables on the given database connection .
*
* @ param DB_common $conn
*/
function createCoreTables ( DB_common $conn )
{
$schema = Schema :: get ( $conn );
$tableDefs = $this -> getCoreSchema ();
foreach ( $tableDefs as $name => $def ) {
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if ( defined ( 'DEBUG_INSTALLER' )) {
echo " $name " ;
}
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$schema -> ensureTable ( $name , $def );
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}
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return true ;
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}
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/**
* Fetch the core table schema definitions .
*
* @ return array of table names => table def arrays
*/
function getCoreSchema ()
{
$schema = array ();
include INSTALLDIR . '/db/core.php' ;
return $schema ;
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}
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/**
* Return a parseable PHP literal for the given value .
* This will include quotes for strings , etc .
*
* @ param mixed $val
* @ return string
*/
function phpVal ( $val )
{
return var_export ( $val , true );
}
/**
* Return an array of parseable PHP literal for the given values .
* These will include quotes for strings , etc .
*
* @ param mixed $val
* @ return array
*/
function phpVals ( $map )
{
return array_map ( array ( $this , 'phpVal' ), $map );
}
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/**
* Write a stock configuration file .
*
* @ return boolean success
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*
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* @ fixme escape variables in output in case we have funny chars , apostrophes etc
*/
function writeConf ()
{
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$vals = $this -> phpVals ( array (
'sitename' => $this -> sitename ,
'server' => $this -> server ,
'path' => $this -> path ,
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'ssl' => in_array ( $this -> ssl , array ( 'never' , 'always' ))
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? $this -> ssl
: 'never' ,
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'db_database' => $this -> db [ 'database' ],
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'db_type' => $this -> db [ 'type' ]
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));
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// assemble configuration file in a string
$cfg = " <?php \n " .
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" if (!defined('GNUSOCIAL')) { exit(1); } \n \n " .
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// site name
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" \$ config['site']['name'] = { $vals [ 'sitename' ] } ; \n \n " .
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// site location
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" \$ config['site']['server'] = { $vals [ 'server' ] } ; \n " .
" \$ config['site']['path'] = { $vals [ 'path' ] } ; \n \n " .
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" \$ config['site']['ssl'] = { $vals [ 'ssl' ] } ; \n \n " .
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// checks if fancy URLs are enabled
( $this -> fancy ? " \$ config['site']['fancy'] = true; \n \n " : '' ) .
// database
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" \$ config['db']['database'] = { $vals [ 'db_database' ] } ; \n \n " .
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( $this -> db [ 'type' ] == 'pgsql' ? " \$ config['db']['quote_identifiers'] = true; \n \n " : '' ) .
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" \$ config['db']['type'] = { $vals [ 'db_type' ] } ; \n \n " .
" // Uncomment below for better performance. Just remember you must run \n " .
" // php scripts/checkschema.php whenever your enabled plugins change! \n " .
" // \$ config['db']['schemacheck'] = 'script'; \n \n " ;
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// Normalize line endings for Windows servers
$cfg = str_replace ( " \n " , PHP_EOL , $cfg );
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// write configuration file out to install directory
$res = file_put_contents ( INSTALLDIR . '/config.php' , $cfg );
return $res ;
}
/**
* Write the site profile . We do this after creating the initial user
* in case the site profile is set to single user . This gets around the
* 'chicken-and-egg' problem of the system requiring a valid user for
* single user mode , before the intial user is actually created . Yeah ,
* we should probably do this in smarter way .
*
* @ return int res number of bytes written
*/
function writeSiteProfile ()
{
$vals = $this -> phpVals ( array (
'site_profile' => $this -> siteProfile ,
'nickname' => $this -> adminNick
));
$cfg =
// site profile
" \$ config['site']['profile'] = { $vals [ 'site_profile' ] } ; \n " ;
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if ( $this -> siteProfile == " singleuser " ) {
$cfg .= " \$ config['singleuser']['nickname'] = { $vals [ 'nickname' ] } ; \n \n " ;
} else {
$cfg .= " \n " ;
}
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// Normalize line endings for Windows servers
$cfg = str_replace ( " \n " , PHP_EOL , $cfg );
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// write configuration file out to install directory
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$res = file_put_contents ( INSTALLDIR . '/config.php' , $cfg , FILE_APPEND );
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return $res ;
}
/**
* Install schema into the database
*
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* @ param string $filename location of database schema file
* @ param DB_common $conn connection to database
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*
* @ return boolean - indicating success or failure
*/
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function runDbScript ( $filename , DB_common $conn )
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{
$sql = trim ( file_get_contents ( INSTALLDIR . '/db/' . $filename ));
$stmts = explode ( ';' , $sql );
foreach ( $stmts as $stmt ) {
$stmt = trim ( $stmt );
if ( ! mb_strlen ( $stmt )) {
continue ;
}
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try {
$res = $conn -> simpleQuery ( $stmt );
} catch ( Exception $e ) {
$error = $e -> getMessage ();
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$this -> updateStatus ( " ERROR ( $error ) for SQL ' $stmt ' " );
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return false ;
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}
}
return true ;
}
/**
* Create the initial admin user account .
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* Side effect : may load portions of GNU social framework .
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* Side effect : outputs program info
*/
function registerInitialUser ()
{
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// initalize hostname from install arguments, so it can be used to find
// the /etc config file from the commandline installer
$server = $this -> server ;
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require_once INSTALLDIR . '/lib/common.php' ;
$data = array ( 'nickname' => $this -> adminNick ,
'password' => $this -> adminPass ,
'fullname' => $this -> adminNick );
if ( $this -> adminEmail ) {
$data [ 'email' ] = $this -> adminEmail ;
}
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try {
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$user = User :: register ( $data , true ); // true to skip email sending verification
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} catch ( Exception $e ) {
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return false ;
}
// give initial user carte blanche
$user -> grantRole ( 'owner' );
$user -> grantRole ( 'moderator' );
$user -> grantRole ( 'administrator' );
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return true ;
}
/**
* The beef of the installer !
* Create database , config file , and admin user .
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*
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* Prerequisites : validation of input data .
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*
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* @ return boolean success
*/
function doInstall ()
{
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global $config ;
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$this -> updateStatus ( " Initializing... " );
ini_set ( 'display_errors' , 1 );
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error_reporting ( E_ALL & ~ E_STRICT & ~ E_NOTICE );
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if ( ! defined ( 'GNUSOCIAL' )) {
define ( 'GNUSOCIAL' , true );
}
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if ( ! defined ( 'STATUSNET' )) {
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define ( 'STATUSNET' , true );
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}
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require_once INSTALLDIR . '/lib/framework.php' ;
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GNUsocial :: initDefaults ( $this -> server , $this -> path );
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if ( $this -> siteProfile == " singleuser " ) {
// Until we use ['site']['profile']==='singleuser' everywhere
$config [ 'singleuser' ][ 'enabled' ] = true ;
}
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try {
$this -> db = $this -> setupDatabase ();
if ( ! $this -> db ) {
// database connection failed, do not move on to create config file.
return false ;
}
} catch ( Exception $e ) {
// Lower-level DB error!
$this -> updateStatus ( " Database error: " . $e -> getMessage (), true );
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return false ;
}
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if ( ! $this -> skipConfig ) {
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// Make sure we can write to the file twice
$oldUmask = umask ( 000 );
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$this -> updateStatus ( " Writing config file... " );
$res = $this -> writeConf ();
if ( ! $res ) {
$this -> updateStatus ( " Can't write config file. " , true );
return false ;
}
}
if ( ! empty ( $this -> adminNick )) {
// Okay, cross fingers and try to register an initial user
if ( $this -> registerInitialUser ()) {
$this -> updateStatus (
" An initial user with the administrator role has been created. "
);
} else {
$this -> updateStatus (
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" Could not create initial user account. " ,
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true
);
return false ;
}
}
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if ( ! $this -> skipConfig ) {
$this -> updateStatus ( " Setting site profile... " );
$res = $this -> writeSiteProfile ();
if ( ! $res ) {
$this -> updateStatus ( " Can't write to config file. " , true );
return false ;
}
// Restore original umask
umask ( $oldUmask );
// Set permissions back to something decent
chmod ( INSTALLDIR . '/config.php' , 0644 );
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}
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$scheme = $this -> ssl === 'always' ? 'https' : 'http' ;
$link = " { $scheme } :// { $this -> server } / { $this -> path } " ;
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$this -> updateStatus ( " GNU social has been installed at $link " );
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$this -> updateStatus (
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'<strong>DONE!</strong> You can visit your <a href="' . htmlspecialchars ( $link ) . '">new GNU social site</a> (log in as "' . htmlspecialchars ( $this -> adminNick ) . '"). If this is your first GNU social install, make your experience the best possible by visiting our resource site to join the <a href="https://gnu.io/social/resources/">mailing list or IRC</a>. <a href="' . htmlspecialchars ( $link ) . '/doc/faq">FAQ is found here</a>.'
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);
return true ;
}
/**
* Output a pre - install - time warning message
* @ param string $message HTML ok , but should be plaintext - able
* @ param string $submessage HTML ok , but should be plaintext - able
*/
abstract function warning ( $message , $submessage = '' );
/**
* Output an install - time progress message
* @ param string $message HTML ok , but should be plaintext - able
* @ param boolean $error true if this should be marked as an error condition
*/
abstract function updateStatus ( $status , $error = false );
}