install.php

<?php
/*
 *  Jirafeau, your web file repository
 *  Copyright (C) 2008  Julien "axolotl" BERNARD <axolotl@magieeternelle.org>
 *  Copyright (C) 2015  Nicola Spanti (RyDroid) <dev@nicola-spanti.info>
 *
 *  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 <https://www.gnu.org/licenses/>.
 */
define ('JIRAFEAU_ROOT', dirname (__FILE__) . '/');
define ('NL', "\n");
define ('QUOTE', "'");
define ('JIRAFEAU_CFG', JIRAFEAU_ROOT . 'lib/config.local.php');
define ('JIRAFEAU_VAR_RAND_LENGTH', 15);

require (JIRAFEAU_ROOT . 'lib/settings.php');
require (JIRAFEAU_ROOT . 'lib/functions.php');
require (JIRAFEAU_ROOT . 'lib/lang.php');

/**
 * Prepend used functions
 **/

function
jirafeau_quoted ($str)
{
    return QUOTE . str_replace (QUOTE, "\'", $str) . QUOTE;
}

function
jirafeau_export_cfg ($cfg)
{
    $content = '<?php' . NL;
    $content .= '/* ' . t ('This file was generated by the install process. ' .
               'You can edit it. Please see config.original.php to understand the ' .
               'configuration items.') . ' */' . NL;
    $content .= '$cfg = ' . var_export($cfg, true) . ';';

    $fileWrite = file_put_contents(JIRAFEAU_CFG, $content);

    if (false === $fileWrite) {
        jirafeau_fatal_error(t('Can not write local configuration file'));
    }
}

function
jirafeau_mkdir ($path)
{
    return !(!file_exists ($path) && !@mkdir ($path, 0755));
}

/**
 * Returns true whether the path is writable or we manage to make it
 * so, which essentially is the same thing.
 * @param $path is the file or directory to be tested.
 * @return true if $path is writable.
 */
function
jirafeau_is_writable ($path)
{
    /* "@" gets rid of error messages. */
    return is_writable ($path) || @chmod ($path, 0777);
}

function
jirafeau_check_var_dir ($path)
{
    $mkdir_str1 = t('The following directory could not be created') . ':';
    $mkdir_str2 = t('You should create this directory manually.');
    $write_str1 = t('The following directory is not writable') . ':';
    $write_str2 = t('You should give the write permission to the web server on ' .
                    'this directory.');
    $solution_str = t('Here is a solution') . ':';

    if (!jirafeau_mkdir ($path) || !jirafeau_is_writable ($path))
        return array ('has_error' => true,
                      'why' => $mkdir_str1 . '<br /><code>' .
                               $path . '</code><br />' . $solution_str .
                               '<br />' . $mkdir_str2);

    foreach (array ('files', 'links', 'async', 'alias') as $subdir)
    {
        $subpath = $path.$subdir;

        if (!jirafeau_mkdir ($subpath) || !jirafeau_is_writable ($subpath))
            return array ('has_error' => true,
                          'why' => $mkdir_str1 . '<br /><code>' .
                                   $subpath . '</code><br />' . $solution_str .
                                   '<br />' . $mkdir_str2);
    }

    return array ('has_error' => false, 'why' => '');
}

function
jirafeau_add_ending_slash ($path)
{
    return $path . ((substr ($path, -1) == '/') ? '' : '/');
}

function
jirafeau_fatal_error($errorText)
{
    echo '<div class="error"><h2>Error</h2><p>' . $errorText . '</p></div>';
    require (JIRAFEAU_ROOT . 'lib/template/footer.php');
    exit;
}

/**
 * Check installation
 **/

// Is the installation process done already?
// Then there is nothing to do here → redirect to the main page.
if ($cfg['installation_done'] === true)
{
	header('Location: index.php');
	exit;
}

/**
 * Prepare installation process
 **/

require (JIRAFEAU_ROOT . 'lib/template/header.php');

// does the local configuration file exist?
if (!file_exists (JIRAFEAU_CFG))
{
    // show an error if it is not possible to create the file
    if (!@touch (JIRAFEAU_CFG))
    {
        jirafeau_fatal_error(
            t('The local configuration file could not be created. Create a ' .
               '<code>lib/config.local.php</code> file and give the write ' .
               'permission to the web server (preferred solution), or give the ' .
               'write permission to the web server on the <code>lib</code> ' .
               'directory.')
        );
    }
}

// is the local configuration writable?
if (!is_writable (JIRAFEAU_CFG) && !@chmod (JIRAFEAU_CFG, '0666'))
{
    jirafeau_fatal_error(
        t('The local configuration is not writable by the web server. ' .
            'Give the write permission to the web server on the ' .
            '<code>lib/config.local.php</code> file.')
    );
}

/**
 * Run trough each installation step
 **/

if (isset ($_POST['step']) && isset ($_POST['next']))
{
    switch ($_POST['step'])
    {
    case 1:
        $cfg['lang'] = $_POST['lang'];
        jirafeau_export_cfg ($cfg);
        break;

    case 2:
        $cfg['admin_password'] = hash('sha256', $_POST['admin_password']);
        jirafeau_export_cfg ($cfg);
        break;

    case 3:
        $cfg['web_root'] = jirafeau_add_ending_slash ($_POST['web_root']);
        $cfg['var_root'] = jirafeau_add_ending_slash ($_POST['var_root']);
        jirafeau_export_cfg ($cfg);
        break;

    case 4:
        $cfg['web_root'] = jirafeau_add_ending_slash ($_POST['web_root']);
        $cfg['var_root'] = jirafeau_add_ending_slash ($_POST['var_root']);
        jirafeau_export_cfg ($cfg);
        break;
    }

}

$current = 1;
if (isset ($_POST['next']))
    $current = $_POST['step'] + 1;
else if (isset ($_POST['previous']))
    $current = $_POST['step'] - 1;
else if (isset ($_POST['retry']))
    $current = $_POST['step'];

switch ($current)
{
case 1:
default:
    ?><h2><?php printf (t('Installation of Jirafeau') . ' - ' . t('step') .
    ' %d ' . t('out of') . ' %d', 1, 4);
    ?></h2> <div id = "install"> <form action =
        "<?php echo basename(__FILE__); ?>" method = "post"> <input type =
        "hidden" name = "jirafeau" value =
        "<?php echo JIRAFEAU_VERSION; ?>" /><input type = "hidden" name =
        "step" value = "1" /><fieldset> <legend><?php echo t('Language');
    ?></legend> <table> <tr> <td class = "info" colspan =
        "2"><?php echo
        t
        ('Jirafeau is internationalised. Choose a specific langage or ' .
         'choose Automatic (langage is provided by user\'s browser).');
    ?></td> </tr> <tr> <td class = "label"><label for = "select_lang"
       ><?php echo t('Choose the default language') . ':';
    ?></label></td>
        <td class = "field">
        <select name = "lang" id = "select_lang">
        <?php foreach ($languages_list as $key => $item)
    {
        echo '<option value="'.$key.'"'.($key ==
                      $cfg['lang'] ? ' selected="selected"'
                      : '').'>'.$item.'</option>'.NL;
    }
    ?></select>
        </td>
        </tr>
        <tr class = "nav">
        <td></td>
        <td class = "nav next"><input type = "submit" name = "next" value =
        "<?php echo t('Next step'); ?>" /></td> </tr> </table>
        </fieldset> </form> </div> <?php
break;

case 2:
    ?><h2><?php printf (t('Installation of Jirafeau') . ' - ' . t('step') .
    ' %d ' . t('out of') . ' %d', 2, 4);
    ?></h2> <div id = "install"> <form action =
        "<?php echo basename(__FILE__); ?>" method = "post"> <input type =
        "hidden" name = "jirafeau" value =
        "<?php echo JIRAFEAU_VERSION; ?>" /><input type = "hidden" name =
        "step" value = "2" /><fieldset> <legend><?php
        echo t('Administration password');
    ?></legend> <table> <tr> <td class = "info" colspan =
        "2"><?php echo
        t
        ('Jirafeau has an administration interface (through admin.php). ' .
        'You can set a password to access the interface or leave it empty ' .
        'to disable the interface.');
    ?></td> </tr> <tr> <td class = "label"><label for = "select_password"
       ><?php echo t('Administration password') . ':';
    ?></label></td>
        <td class = "field"><input type = "password" name = "admin_password"
        id = "admin_password" size = "40" /></td>
        </tr>
        <tr class = "nav">
        <td></td>
        <td class = "nav next">
        <input type = "submit"
        class = "navleft" name = "previous" value = "<?php
        echo t('Previous step'); ?>" />
        <input type = "submit" name = "next" value =
        "<?php echo t('Next step'); ?>" /></td> </tr> </table>
        </fieldset> </form> </div> <?php
break;

case 3:
    ?><h2><?php printf (t('Installation of Jirafeau') . ' - ' . t('step') .
    ' %d ' . t('out of') . ' %d', 3, 4);
    ?></h2> <div id = "install"> <form action =
        "<?php echo basename(__FILE__); ?>" method = "post"> <input type =
        "hidden" name = "jirafeau" value =
        "<?php echo JIRAFEAU_VERSION; ?>" /><input type = "hidden" name =
        "step" value =
        "3" /><fieldset> <legend><?php echo t('Information');
    ?></legend> <table> <tr> <td class = "info" colspan =
        "2"><?php echo
        t
        ('The base address of Jirafeau is the first part of the URL, until ' .
         '(and including) the last slash. For example: ' .
         '"http://www.example.com/". Do not forget the trailing slash!');
    ?></td> </tr> <tr> <td class = "label"><label for = "input_web_root"
       ><?php echo t('Base address') . ':';
    ?></label></td>
        <td class = "field"><input type = "text" name = "web_root"
        id = "input_web_root" value = "<?php
        echo (empty($cfg['web_root']) ?
          'http://' . $_SERVER['HTTP_HOST'] . str_replace(basename(__FILE__),
          '', $_SERVER['REQUEST_URI']) : $cfg['web_root']);
      ?>" size = "40" /></td>
        </tr> <tr> <td class = "info" colspan = "2"><?php
        echo t('The data directory is where your files and information about' .
        ' your files will be stored. You should put it outside your web ' .
        'site, or at least restrict the access to this directory. Do not ' .
        'forget the trailing slash!');
    ?></td> </tr> <tr> <td class = "label"><label for = "input_var_root"
       ><?php echo t('Data directory') . ':';
    ?></label></td>
        <td class = "field"><input type = "text" name = "var_root"
        id = "input_var_root" value = "<?php
        if(empty($cfg['var_root'])) {
          $alphanum = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' .
          'abcdefghijklmnopqrstuvwxyz' . '0123456789';
          $len_alphanum = strlen($alphanum);
          $var = 'var-';
          for($i = 0; $i <JIRAFEAU_VAR_RAND_LENGTH; $i++) {
            $var .= substr($alphanum, mt_rand(0, $len_alphanum - 1), 1);
          }
          echo JIRAFEAU_ROOT . $var . '/';
        }
        else
          echo $cfg['var_root'];
      ?>" size = "40" /></td>
        </tr> <tr> <td colspan = "2"><input type = "submit"
        class = "navleft" name = "previous" value = "<?php
        echo t('Previous step'); ?>" />
         <input type = "submit" class = "navright" name = "next" value = "
        <?php echo t('Next step'); ?>" />
        </td> </tr> </table> </fieldset>
        </form> </div> <?php
break;

case 4:
    ?><h2><?php printf (t('Installation of Jirafeau') . ' - ' . t('step') .
    ' %d ' . t('out of') . ' %d', 4, 4);
    ?></h2> <div id = "install"> <form action =
        "<?php echo basename(__FILE__); ?>" method = "post"> <input type =
        "hidden" name = "jirafeau" value =
        "<?php echo JIRAFEAU_VERSION; ?>" /><input type = "hidden" name =
        "step" value =
        "4" /><fieldset> <legend><?php echo t('Finalisation');
    ?></legend> <table> <tr> <td class = "info" colspan =
        "2"><?php echo
        t ('Jirafeau is setting the website according to the configuration ' .
           'you provided.');
    ?></td> </tr> <tr> <td class = "nav previous"><input type =
        "submit" name = "previous" value =
        "
    <?php
    echo t('Previous step');
    ?>" /></td> <td></td> </tr>
        </table> </fieldset> </form> </div>
    <?php
    $err = jirafeau_check_var_dir ($cfg['var_root']);
    if ($err['has_error'])
    {
        echo '<div class="error"><p>'.$err['why'].'<br />'.NL;
        ?><form action = "<?php echo basename(__FILE__); ?>" method =
            "post"> <input type = "hidden" name = "jirafeau" value =
            "<?php echo JIRAFEAU_VERSION; ?>" /><input type = "hidden" name =
            "step" value = "4" /><input type = "submit" name =
            "retry" value =
            "<?php echo t('Retry this step'); ?>" /></form>
            <?php echo '</p></div>';
    }
    else
    {
        $cfg['installation_done'] = true;
        jirafeau_export_cfg ($cfg);
        echo '<div class="message"><p>' .
             t('Jirafeau is now fully operational') . ':' .
             '<br /><a href="' . $cfg['web_root'] . '">' .
             $cfg['web_root'].'</a></p></div>';
    }
break;
}

require (JIRAFEAU_ROOT . 'lib/template/footer.php');