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install.php 29.2 KB
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<?php
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/**
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 * StatusNet - the distributed open-source microblogging tool
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 * Copyright (C) 2009, 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/>.
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 *
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 * @category Installation
 * @package  Installation
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 *
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 * @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>
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 * @author   Eric Helgeson <helfire@Erics-MBP.local>
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 * @author   Evan Prodromou <evan@status.net>
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 * @author   Robin Millette <millette@controlyourself.ca>
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 * @author   Sarven Capadisli <csarven@status.net>
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 * @author   Tom Adams <tom@holizz.com>
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 * @author   Zach Copley <zach@status.net>
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 * @license  GNU Affero General Public License http://www.gnu.org/licenses/
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 * @version  0.9.x
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 * @link     http://status.net
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 */
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define('INSTALLDIR', dirname(__FILE__));

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$external_libraries=array(
    array(
        'name'=>'gettext',
        'url'=>'http://us.php.net/manual/en/book.gettext.php',
        'check_function'=>'gettext'
    ),
    array(
        'name'=>'PEAR',
        'url'=>'http://pear.php.net/',
        'deb'=>'php-pear',
        'include'=>'PEAR.php',
        'check_class'=>'PEAR'
    ),
    array(
        'name'=>'DB',
        'pear'=>'DB',
        'url'=>'http://pear.php.net/package/DB',
        'deb'=>'php-db',
        'include'=>'DB/common.php',
        'check_class'=>'DB_common'
    ),
    array(
        'name'=>'DB_DataObject',
        'pear'=>'DB_DataObject',
        'url'=>'http://pear.php.net/package/DB_DataObject',
        'include'=>'DB/DataObject.php',
        'check_class'=>'DB_DataObject'
    ),
    array(
        'name'=>'Console_Getopt',
        'pear'=>'Console_Getopt',
        'url'=>'http://pear.php.net/package/Console_Getopt',
        'include'=>'Console/Getopt.php',
        'check_class'=>'Console_Getopt'
    ),
    array(
        'name'=>'Facebook API',
        'url'=>'http://developers.facebook.com/',
        'include'=>'facebook/facebook.php',
        'check_class'=>'Facebook'
    ),
    array(
        'name'=>'htmLawed',
        'url'=>'http://www.bioinformatics.org/phplabware/internal_utilities/htmLawed',
        'include'=>'htmLawed/htmLawed.php',
        'check_function'=>'htmLawed'
    ),
    array(
        'name'=>'HTTP_Request',
        'pear'=>'HTTP_Request',
        'url'=>'http://pear.php.net/package/HTTP_Request',
        'deb'=>'php-http-request',
        'include'=>'HTTP/Request.php',
        'check_class'=>'HTTP_Request'
    ),
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    array(
        'name'=>'HTTP_Request2',
        'pear'=>'HTTP_Request2',
        'url'=>'http://pear.php.net/package/HTTP_Request2',
        'include'=>'HTTP/Request2.php',
        'check_class'=>'HTTP_Request2'
    ),
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    array(
        'name'=>'Mail',
        'pear'=>'Mail',
        'url'=>'http://pear.php.net/package/Mail',
        'deb'=>'php-mail',
        'include'=>'Mail.php',
        'check_class'=>'Mail'
    ),
    array(
        'name'=>'Mail_mimeDecode',
        'pear'=>'Mail_mimeDecode',
        'url'=>'http://pear.php.net/package/Mail_mimeDecode',
        'deb'=>'php-mail-mimedecode',
        'include'=>'Mail/mimeDecode.php',
        'check_class'=>'Mail_mimeDecode'
    ),
    array(
        'name'=>'Mime_Type',
        'pear'=>'Mime_Type',
        'url'=>'http://pear.php.net/package/Mime_Type',
        'include'=>'MIME/Type.php',
        'check_class'=>'Mime_Type'
    ),
    array(
        'name'=>'Net_URL_Mapper',
        'pear'=>'Net_URL_Mapper',
        'url'=>'http://pear.php.net/package/Net_URL_Mapper',
        'include'=>'Net/URL/Mapper.php',
        'check_class'=>'Net_URL_Mapper'
    ),
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    array(
        'name'=>'Net_LDAP2',
        'pear'=>'Net_LDAP2',
        'url'=>'http://pear.php.net/package/Net_LDAP2',
        'deb'=>'php-net-ldap2',
        'include'=>'Net/LDAP2.php',
        'check_class'=>'Net_LDAP2'
    ),
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    array(
        'name'=>'Net_Socket',
        'pear'=>'Net_Socket',
        'url'=>'http://pear.php.net/package/Net_Socket',
        'deb'=>'php-net-socket',
        'include'=>'Net/Socket.php',
        'check_class'=>'Net_Socket'
    ),
    array(
        'name'=>'Net_SMTP',
        'pear'=>'Net_SMTP',
        'url'=>'http://pear.php.net/package/Net_SMTP',
        'deb'=>'php-net-smtp',
        'include'=>'Net/SMTP.php',
        'check_class'=>'Net_SMTP'
    ),
    array(
        'name'=>'Net_URL',
        'pear'=>'Net_URL',
        'url'=>'http://pear.php.net/package/Net_URL',
        'deb'=>'php-net-url',
        'include'=>'Net/URL.php',
        'check_class'=>'Net_URL'
    ),
    array(
        'name'=>'Net_URL2',
        'pear'=>'Net_URL2',
        'url'=>'http://pear.php.net/package/Net_URL2',
        'include'=>'Net/URL2.php',
        'check_class'=>'Net_URL2'
    ),
    array(
        'name'=>'Services_oEmbed',
        'pear'=>'Services_oEmbed',
        'url'=>'http://pear.php.net/package/Services_oEmbed',
        'include'=>'Services/oEmbed.php',
        'check_class'=>'Services_oEmbed'
    ),
    array(
        'name'=>'Stomp',
        'url'=>'http://stomp.codehaus.org/PHP',
        'include'=>'Stomp.php',
        'check_class'=>'Stomp'
    ),
    array(
        'name'=>'System_Command',
        'pear'=>'System_Command',
        'url'=>'http://pear.php.net/package/System_Command',
        'include'=>'System/Command.php',
        'check_class'=>'System_Command'
    ),
    array(
        'name'=>'XMPPHP',
        'url'=>'http://code.google.com/p/xmpphp',
        'include'=>'XMPPHP/XMPP.php',
        'check_class'=>'XMPPHP_XMPP'
    ),
    array(
        'name'=>'PHP Markdown',
        'url'=>'http://www.michelf.com/projects/php-markdown/',
        'include'=>'markdown.php',
        'check_class'=>'Markdown_Parser'
    ),
    array(
        'name'=>'OAuth',
        'url'=>'http://code.google.com/p/oauth-php',
        'include'=>'OAuth.php',
        'check_class'=>'OAuthRequest'
    ),
    array(
        'name'=>'Validate',
        'pear'=>'Validate',
        'url'=>'http://pear.php.net/package/Validate',
        'include'=>'Validate.php',
        'check_class'=>'Validate'
    )
);
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$dbModules = array(
    'mysql' => array(
        'name' => 'MySQL',
        'check_module' => 'mysql', // mysqli?
        'installer' => 'mysql_db_installer',
    ),
    'pgsql' => array(
        'name' => 'PostgreSQL',
        'check_module' => 'pgsql',
        'installer' => 'pgsql_db_installer',
    ),
);
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/**
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 * the actual installation.
 * If call libraries are present, then install
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 *
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 * @return void
 */
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function main()
{
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    if (!checkPrereqs()) {
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        return;
    }
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    if (!empty($_GET['checklibs'])) {
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        showLibs();
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    } else {
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        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
            handlePost();
        } else {
            showForm();
        }
    }
}
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/**
 * checks if an external libary is present
 *
 * @param string $external_library Name of library
 *
 * @return boolean indicates if library present
 */
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function haveExternalLibrary($external_library)
{
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    if (isset($external_library['include']) && !haveIncludeFile($external_library['include'])) {
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        return false;
    }
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    if (isset($external_library['check_function']) && ! function_exists($external_library['check_function'])) {
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        return false;
    }
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    if (isset($external_library['check_class']) && ! class_exists($external_library['check_class'])) {
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        return false;
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    }
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    return true;
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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.
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
 */
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function checkPrereqs()
{
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    $pass = true;
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    if (file_exists(INSTALLDIR.'/config.php')) {
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         printf('<p class="error">Config file &quot;config.php&quot; already exists.</p>');
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        $pass = false;
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    }

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    if (version_compare(PHP_VERSION, '5.2.3', '<')) {
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        printf('<p class="error">Require PHP version 5.2.3 or greater.</p>');
        $pass = false;
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    }

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    $reqs = array('gd', 'curl',
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                  'xmlwriter', 'mbstring', 'xml', 'dom', 'simplexml');
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    foreach ($reqs as $req) {
        if (!checkExtension($req)) {
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            printf('<p class="error">Cannot load required extension: <code>%s</code></p>', $req);
            $pass = false;
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        }
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    }
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    // Make sure we have at least one database module available
    global $dbModules;
    $missingExtensions = array();
    foreach ($dbModules as $type => $info) {
        if (!checkExtension($info['check_module'])) {
            $missingExtensions[] = $info['check_module'];
        }
    }
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    if (count($missingExtensions) == count($dbModules)) {
        $req = implode(', ', $missingExtensions);
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        printf('<p class="error">Cannot find mysql or pgsql extension. You need one or the other.');
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        $pass = false;
    }
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    if (!is_writable(INSTALLDIR)) {
        printf('<p class="error">Cannot write config file to: <code>%s</code></p>', INSTALLDIR);
        printf('<p>On your server, try this command: <code>chmod a+w %s</code>', INSTALLDIR);
        $pass = false;
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    }
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    // Check the subdirs used for file uploads
    $fileSubdirs = array('avatar', 'background', 'file');
    foreach ($fileSubdirs as $fileSubdir) {
        $fileFullPath = INSTALLDIR."/$fileSubdir/";
        if (!is_writable($fileFullPath)) {
            printf('<p class="error">Cannot write to %s directory: <code>%s</code></p>', $fileSubdir, $fileFullPath);
            printf('<p>On your server, try this command: <code>chmod a+w %s</code></p>', $fileFullPath);
            $pass = false;
        }
    }
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    return $pass;
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}

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/**
 * Checks if a php extension is both installed and loaded
 *
 * @param string $name of extension to check
 *
 * @return boolean whether extension is installed and loaded
 */
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function checkExtension($name)
{
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    if (extension_loaded($name)) {
        return true;
    } elseif (function_exists('dl') && ini_get('enable_dl') && !ini_get('safe_mode')) {
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        // 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);
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    } else {
        return false;
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    }
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}

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/**
 * Show list of libraries
 *
 * @return void
 */
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function showLibs()
{
    global $external_libraries;
    $present_libraries=array();
    $absent_libraries=array();
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    foreach ($external_libraries as $external_library) {
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        if (haveExternalLibrary($external_library)) {
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            $present_libraries[]=$external_library;
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        } else {
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            $absent_libraries[]=$external_library;
        }
    }
    echo<<<E_O_T
    <div class="instructions">
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        <p>StatusNet comes bundled with a number of libraries required for the application to work. However, it is best that you use PEAR or you distribution to manage
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        libraries instead, as they tend to provide security updates faster, and may offer improved performance.</p>
        <p>On Debian based distributions, such as Ubuntu, use a package manager (such as &quot;aptitude&quot;, &quot;apt-get&quot;, and &quot;synaptic&quot;) to install the package listed.</p>
        <p>On RPM based distributions, such as Red Hat, Fedora, CentOS, Scientific Linux, Yellow Dog Linux and Oracle Enterprise Linux, use a package manager (such as &quot;yum&quot;, &quot;apt-rpm&quot;, and &quot;up2date&quot;) to install the package listed.</p>
        <p>On servers without a package manager (such as Windows), or if the library is not packaged for your distribution, you can use PHP's PEAR to install the library. Simply run &quot;pear install &lt;name&gt;&quot;.</p>
    </div>
    <h2>Absent Libraries</h2>
    <ul id="absent_libraries">
E_O_T;
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    foreach ($absent_libraries as $library) {
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        echo '<li>';
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        if (isset($library['url'])) {
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            echo '<a href="'.$library['url'].'">'.htmlentities($library['name']).'</a>';
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        } else {
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            echo htmlentities($library['name']);
        }
        echo '<ul>';
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        if (isset($library['deb'])) {
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            echo '<li class="deb package">deb: <a href="apt:' . urlencode($library['deb']) . '">' . htmlentities($library['deb']) . '</a></li>';
        }
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        if (isset($library['rpm'])) {
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            echo '<li class="rpm package">rpm: ' . htmlentities($library['rpm']) . '</li>';
        }
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        if (isset($library['pear'])) {
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            echo '<li class="pear package">pear: ' . htmlentities($library['pear']) . '</li>';
        }
        echo '</ul>';
    }
    echo<<<E_O_T
    </ul>
    <h2>Installed Libraries</h2>
    <ul id="present_libraries">
E_O_T;
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    foreach ($present_libraries as $library) {
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        echo '<li>';
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        if (isset($library['url'])) {
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            echo '<a href="'.$library['url'].'">'.htmlentities($library['name']).'</a>';
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        } else {
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            echo htmlentities($library['name']);
        }
        echo '</li>';
    }
    echo<<<E_O_T
    </ul>
E_O_T;
}

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/**
 * Helper class for building form
 */
class Posted {
    function value($name)
    {
        if (isset($_POST[$name])) {
            return htmlspecialchars(strval($_POST[$name]));
        } else {
            return '';
        }
    }
}

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function showForm()
{
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    global $dbModules;
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    $post = new Posted();
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    $dbRadios = '';
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    if (isset($_POST['dbtype'])) {
        $dbtype = $_POST['dbtype'];
    } else {
        $dbtype = null;
    }
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    foreach ($dbModules as $type => $info) {
        if (checkExtension($info['check_module'])) {
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            if ($dbtype == null || $dbtype == $type) {
                $checked = 'checked="checked" ';
                $dbtype = $type; // if we didn't have one checked, hit the first
            } else {
                $checked = '';
            }
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            $dbRadios .= "<input type=\"radio\" name=\"dbtype\" id=\"dbtype-$type\" value=\"$type\" $checked/> $info[name]<br />\n";
        }
    }
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    echo<<<E_O_T
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        </ul>
    </dd>
</dl>
<form method="post" action="install.php" class="form_settings" id="form_install">
    <fieldset>
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        <fieldset id="settings_site">
            <legend>Site settings</legend>
            <ul class="form_data">
                <li>
                    <label for="sitename">Site name</label>
                    <input type="text" id="sitename" name="sitename" value="{$post->value('sitename')}" />
                    <p class="form_guide">The name of your site</p>
                </li>
                <li>
                    <label for="fancy-enable">Fancy URLs</label>
                    <input type="radio" name="fancy" id="fancy-enable" value="enable" checked='checked' /> enable<br />
                    <input type="radio" name="fancy" id="fancy-disable" value="" /> disable<br />
                    <p class="form_guide" id='fancy-form_guide'>Enable fancy (pretty) URLs. Auto-detection failed, it depends on Javascript.</p>
                </li>
            </ul>
        </fieldset>
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        <fieldset id="settings_db">
            <legend>Database settings</legend>
            <ul class="form_data">
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                <li>
                    <label for="host">Hostname</label>
                    <input type="text" id="host" name="host" value="{$post->value('host')}" />
                    <p class="form_guide">Database hostname</p>
                </li>
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                <li>
                    <label for="dbtype">Type</label>
                    $dbRadios
                    <p class="form_guide">Database type</p>
                </li>
                <li>
                    <label for="database">Name</label>
                    <input type="text" id="database" name="database" value="{$post->value('database')}" />
                    <p class="form_guide">Database name</p>
                </li>
                <li>
                    <label for="dbusername">DB username</label>
                    <input type="text" id="dbusername" name="dbusername" value="{$post->value('dbusername')}" />
                    <p class="form_guide">Database username</p>
                </li>
                <li>
                    <label for="dbpassword">DB password</label>
                    <input type="password" id="dbpassword" name="dbpassword" value="{$post->value('dbpassword')}" />
                    <p class="form_guide">Database password (optional)</p>
                </li>
            </ul>
        </fieldset>
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        <fieldset id="settings_admin">
            <legend>Administrator settings</legend>
            <ul class="form_data">
                <li>
                    <label for="admin_nickname">Administrator nickname</label>
                    <input type="text" id="admin_nickname" name="admin_nickname" value="{$post->value('admin_nickname')}" />
                    <p class="form_guide">Nickname for the initial StatusNet user (administrator)</p>
                </li>
                <li>
                    <label for="admin_password">Administrator password</label>
                    <input type="password" id="admin_password" name="admin_password" value="{$post->value('admin_password')}" />
                    <p class="form_guide">Password for the initial StatusNet user (administrator)</p>
                </li>
                <li>
                    <label for="admin_password2">Confirm password</label>
                    <input type="password" id="admin_password2" name="admin_password2" value="{$post->value('admin_password2')}" />
                </li>
                <li>
                    <label for="admin_email">Administrator e-mail</label>
                    <input id="admin_email" name="admin_email" value="{$post->value('admin_email')}" />
                    <p class="form_guide">Optional email address for the initial StatusNet user (administrator)</p>
                </li>
            </ul>
        </fieldset>
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        <input type="submit" name="submit" class="submit" value="Submit" />
    </fieldset>
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</form>
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E_O_T;
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}

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function updateStatus($status, $error=false)
{
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    echo '<li' . ($error ? ' class="error"': '' ) . ">$status</li>";
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}

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function handlePost()
{
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    $host     = $_POST['host'];
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    $dbtype   = $_POST['dbtype'];
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    $database = $_POST['database'];
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    $username = $_POST['dbusername'];
    $password = $_POST['dbpassword'];
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    $sitename = $_POST['sitename'];
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    $fancy    = !empty($_POST['fancy']);
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    $adminNick = $_POST['admin_nickname'];
    $adminPass = $_POST['admin_password'];
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    $adminPass2 = $_POST['admin_password2'];
    $adminEmail = $_POST['admin_email'];
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    $server = $_SERVER['HTTP_HOST'];
    $path = substr(dirname($_SERVER['PHP_SELF']), 1);
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    echo <<<STR
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    <dl class="system_notice">
        <dt>Page notice</dt>
        <dd>
            <ul>
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STR;
    $fail = false;
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    if (empty($host)) {
        updateStatus("No hostname specified.", true);
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        $fail = true;
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    }

    if (empty($database)) {
        updateStatus("No database specified.", true);
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        $fail = true;
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    }

    if (empty($username)) {
        updateStatus("No username specified.", true);
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        $fail = true;
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    }

    if (empty($sitename)) {
        updateStatus("No sitename specified.", true);
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        $fail = true;
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    }

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    if (empty($adminNick)) {
        updateStatus("No initial StatusNet user nickname specified.", true);
        $fail = true;
    }

    if (empty($adminPass)) {
        updateStatus("No initial StatusNet user password specified.", true);
        $fail = true;
    }
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    if ($adminPass != $adminPass2) {
        updateStatus("Administrator passwords do not match. Did you mistype?", true);
        $fail = true;
    }
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    if ($fail) {
        showForm();
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        return;
    }
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    global $dbModules;
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    $db = call_user_func($dbModules[$dbtype]['installer'], $host, $database, $username, $password);
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    if (!$db) {
        // database connection failed, do not move on to create config file.
        return false;
    }
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    updateStatus("Writing config file...");
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    $res = writeConf($sitename, $server, $path, $fancy, $db);
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    if (!$res) {
        updateStatus("Can't write config file.", true);
        showForm();
        return;
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    }
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    // Okay, cross fingers and try to register an initial user
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    if (registerInitialUser($adminNick, $adminPass, $adminEmail)) {
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        updateStatus(
            "An initial user with the administrator role has been created."
        );
    } else {
        updateStatus(
            "Could not create initial StatusNet user (administrator).",
            true
        );
        showForm();
        return;
    }

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    /*
        TODO https needs to be considered
    */
    $link = "http://".$server.'/'.$path;
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    updateStatus("StatusNet has been installed at $link");
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    updateStatus(
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        "<strong>DONE!</strong> You can visit your <a href='$link'>new StatusNet site</a> (login as '$adminNick'). If this is your first StatusNet install, you may want to poke around our <a href='http://status.net/wiki/Getting_started'>Getting Started guide</a>."
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    );
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}

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function Pgsql_Db_installer($host, $database, $username, $password)
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{
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    $connstring = "dbname=$database host=$host user=$username";

    //No password would mean trust authentication used.
    if (!empty($password)) {
        $connstring .= " password=$password";
    }
    updateStatus("Starting installation...");
    updateStatus("Checking database...");
    $conn = pg_connect($connstring);

    if ($conn ===false) {
        updateStatus("Failed to connect to database: $connstring");
        showForm();
        return false;
    }

    //ensure database encoding is UTF8
    $record = pg_fetch_object(pg_query($conn, 'SHOW server_encoding'));
    if ($record->server_encoding != 'UTF8') {
        updateStatus("StatusNet requires UTF8 character encoding. Your database is ". htmlentities($record->server_encoding));
        showForm();
        return false;
    }

    updateStatus("Running database script...");
    //wrap in transaction;
    pg_query($conn, 'BEGIN');
    $res = runDbScript(INSTALLDIR.'/db/statusnet_pg.sql', $conn, 'pgsql');

    if ($res === false) {
        updateStatus("Can't run database script.", true);
        showForm();
        return false;
    }
    foreach (array('sms_carrier' => 'SMS carrier',
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                'notice_source' => 'notice source',
                'foreign_services' => 'foreign service')
          as $scr => $name) {
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        updateStatus(sprintf("Adding %s data to database...", $name));
        $res = runDbScript(INSTALLDIR.'/db/'.$scr.'.sql', $conn, 'pgsql');
        if ($res === false) {
            updateStatus(sprintf("Can't run %d script.", $name), true);
            showForm();
            return false;
        }
    }
    pg_query($conn, 'COMMIT');

    if (empty($password)) {
        $sqlUrl = "pgsql://$username@$host/$database";
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    } else {
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        $sqlUrl = "pgsql://$username:$password@$host/$database";
    }

    $db = array('type' => 'pgsql', 'database' => $sqlUrl);

    return $db;
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}

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function Mysql_Db_installer($host, $database, $username, $password)
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{
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    updateStatus("Starting installation...");
    updateStatus("Checking database...");

    $conn = mysql_connect($host, $username, $password);
    if (!$conn) {
        updateStatus("Can't connect to server '$host' as '$username'.", true);
        showForm();
        return false;
    }
    updateStatus("Changing to database...");
    $res = mysql_select_db($database, $conn);
    if (!$res) {
        updateStatus("Can't change to database.", true);
        showForm();
        return false;
    }
    updateStatus("Running database script...");
    $res = runDbScript(INSTALLDIR.'/db/statusnet.sql', $conn);
    if ($res === false) {
        updateStatus("Can't run database script.", true);
        showForm();
        return false;
    }
    foreach (array('sms_carrier' => 'SMS carrier',
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                'notice_source' => 'notice source',
                'foreign_services' => 'foreign service')
          as $scr => $name) {
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        updateStatus(sprintf("Adding %s data to database...", $name));
        $res = runDbScript(INSTALLDIR.'/db/'.$scr.'.sql', $conn);
        if ($res === false) {
            updateStatus(sprintf("Can't run %d script.", $name), true);
            showForm();
            return false;
        }
    }

    $sqlUrl = "mysqli://$username:$password@$host/$database";
    $db = array('type' => 'mysql', 'database' => $sqlUrl);
    return $db;
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}

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function writeConf($sitename, $server, $path, $fancy, $db)
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{
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    // assemble configuration file in a string
    $cfg =  "<?php\n".
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            "if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }\n\n".
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            // site name
            "\$config['site']['name'] = '$sitename';\n\n".
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            // site location
            "\$config['site']['server'] = '$server';\n".
            "\$config['site']['path'] = '$path'; \n\n".
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            // checks if fancy URLs are enabled
            ($fancy ? "\$config['site']['fancy'] = true;\n\n":'').
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            // database
            "\$config['db']['database'] = '{$db['database']}';\n\n".
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            ($db['type'] == 'pgsql' ? "\$config['db']['quote_identifiers'] = true;\n\n":'').
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            "\$config['db']['type'] = '{$db['type']}';\n\n";
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    // write configuration file out to install directory
    $res = file_put_contents(INSTALLDIR.'/config.php', $cfg);

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    return $res;
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}
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/**
 * Install schema into the database
 *
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 * @param string $filename location of database schema file
 * @param dbconn $conn     connection to database
 * @param string $type     type of database, currently mysql or pgsql
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 *
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 * @return boolean - indicating success or failure
 */
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function runDbScript($filename, $conn, $type = 'mysqli')
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{
    $sql = trim(file_get_contents($filename));
    $stmts = explode(';', $sql);
    foreach ($stmts as $stmt) {
        $stmt = trim($stmt);
        if (!mb_strlen($stmt)) {
            continue;
        }
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        // FIXME: use PEAR::DB or PDO instead of our own switch
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        switch ($type) {
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        case 'mysqli':
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            $res = mysql_query($stmt, $conn);
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            if ($res === false) {
                $error = mysql_error();
            }
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            break;
        case 'pgsql':
            $res = pg_query($conn, $stmt);
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            if ($res === false) {
                $error = pg_last_error();
            }
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            break;
        default:
            updateStatus("runDbScript() error: unknown database type ". $type ." provided.");
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        }
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        if ($res === false) {
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            updateStatus("ERROR ($error) for SQL '$stmt'");
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            return $res;
        }
    }
    return true;
}

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function registerInitialUser($nickname, $password, $email)
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{
    define('STATUSNET', true);
    define('LACONICA', true); // compatibility

    require_once INSTALLDIR . '/lib/common.php';

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    $data = array('nickname' => $nickname,
                  'password' => $password,
                  'fullname' => $nickname);
    if ($email) {
        $data['email'] = $email;
    }
    $user = User::register($data);
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    if (empty($user)) {
        return false;
    }

    // give initial user carte blanche

    $user->grantRole('owner');
    $user->grantRole('moderator');
    $user->grantRole('administrator');

    return true;
}

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?>
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<?php echo"<?"; ?> xml version="1.0" encoding="UTF-8" <?php echo "?>"; ?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
    <head>
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        <title>Install StatusNet</title>
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	<link rel="shortcut icon" href="favicon.ico"/>
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        <link rel="stylesheet" type="text/css" href="theme/default/css/display.css" media="screen, projection, tv"/>
        <!--[if IE]><link rel="stylesheet" type="text/css" href="theme/base/css/ie.css" /><![endif]-->
        <!--[if lte IE 6]><link rel="stylesheet" type="text/css" theme/base/css/ie6.css" /><![endif]-->
        <!--[if IE]><link rel="stylesheet" type="text/css" href="theme/default/css/ie.css" /><![endif]-->
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        <script src="js/jquery.min.js"></script>
        <script src="js/install.js"></script>
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    </head>
    <body id="install">
        <div id="wrap">
            <div id="header">
                <address id="site_contact" class="vcard">
                    <a class="url home bookmark" href=".">
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                        <img class="logo photo" src="theme/default/logo.png" alt="StatusNet"/>
                        <span class="fn org">StatusNet</span>
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                    </a>
                </address>
            </div>
            <div id="core">
                <div id="content">
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                     <div id="content_inner">
                        <h1>Install StatusNet</h1>
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<?php main(); ?>
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                   </div>
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                </div>
            </div>
        </div>
    </body>
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</html>