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newgroup.php 7.86 KB
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<?php
/**
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 * StatusNet, the distributed open-source microblogging tool
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 *
 * Add a new group
 *
 * PHP version 5
 *
 * LICENCE: 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  Group
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 * @package   StatusNet
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 * @author    Evan Prodromou <evan@status.net>
 * @author    Sarven Capadisli <csarven@status.net>
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 * @copyright 2008-2009 StatusNet, Inc.
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 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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 * @link      http://status.net/
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 */

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if (!defined('STATUSNET') && !defined('LACONICA')) {
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    exit(1);
}

/**
 * Add a new group
 *
 * This is the form for adding a new group
 *
 * @category Group
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 * @package  StatusNet
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 * @author   Evan Prodromou <evan@status.net>
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 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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 * @link     http://status.net/
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 */
class NewgroupAction extends Action
{
    var $msg;

    function title()
    {
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        // TRANS: Title for form to create a group.
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        return _('New group');
    }

    /**
     * Prepare to run
     */
    function prepare($args)
    {
        parent::prepare($args);

        if (!common_logged_in()) {
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            // TRANS: Client error displayed trying to create a group while not logged in.
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            $this->clientError(_('You must be logged in to create a group.'));
            return false;
        }

        return true;
    }

    /**
     * Handle the request
     *
     * On GET, show the form. On POST, try to save the group.
     *
     * @param array $args unused
     *
     * @return void
     */
    function handle($args)
    {
        parent::handle($args);
        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
            $this->trySave();
        } else {
            $this->showForm();
        }
    }

    function showForm($msg=null)
    {
        $this->msg = $msg;
        $this->showPage();
    }

    function showContent()
    {
        $form = new GroupEditForm($this);
        $form->show();
    }

    function showPageNotice()
    {
        if ($this->msg) {
            $this->element('p', 'error', $this->msg);
        } else {
            $this->element('p', 'instructions',
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                           // TRANS: Form instructions for group create form.
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                           _('Use this form to create a new group.'));
        }
    }

    function trySave()
    {
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        try {
            $nickname = Nickname::normalize($this->trimmed('nickname'));
        } catch (NicknameException $e) {
            $this->showForm($e->getMessage());
        }
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        $fullname    = $this->trimmed('fullname');
        $homepage    = $this->trimmed('homepage');
        $description = $this->trimmed('description');
        $location    = $this->trimmed('location');
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        $aliasstring = $this->trimmed('aliases');
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        if ($this->nicknameExists($nickname)) {
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            // TRANS: Group create form validation error.
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            $this->showForm(_('Nickname already in use. Try another one.'));
            return;
        } else if (!User_group::allowedNickname($nickname)) {
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            // TRANS: Group create form validation error.
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            $this->showForm(_('Not a valid nickname.'));
            return;
        } else if (!is_null($homepage) && (strlen($homepage) > 0) &&
                   !Validate::uri($homepage,
                                  array('allowed_schemes' =>
                                        array('http', 'https')))) {
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            // TRANS: Group create form validation error.
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            $this->showForm(_('Homepage is not a valid URL.'));
            return;
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        } else if (!is_null($fullname) && mb_strlen($fullname) > 255) {
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            // TRANS: Group create form validation error.
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            $this->showForm(_('Full name is too long (maximum 255 characters).'));
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            return;
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        } else if (User_group::descriptionTooLong($description)) {
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            // TRANS: Group create form validation error.
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            // TRANS: %d is the maximum number of allowed characters.
            $this->showForm(sprintf(_m('Description is too long (maximum %d character).',
                                       'Description is too long (maximum %d characters).',
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                                       User_group::maxDescription()),
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                                    User_group::maxDescription()));
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            return;
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        } else if (!is_null($location) && mb_strlen($location) > 255) {
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            // TRANS: Group create form validation error.
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            $this->showForm(_('Location is too long (maximum 255 characters).'));
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            return;
        }

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        if (!empty($aliasstring)) {
            $aliases = array_map('common_canonical_nickname', array_unique(preg_split('/[\s,]+/', $aliasstring)));
        } else {
            $aliases = array();
        }

        if (count($aliases) > common_config('group', 'maxaliases')) {
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            // TRANS: Group create form validation error.
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            // TRANS: %d is the maximum number of allowed aliases.
            $this->showForm(sprintf(_m('Too many aliases! Maximum %d allowed.',
                                       'Too many aliases! Maximum %d allowed.',
                                       common_config('group', 'maxaliases')),
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                                    common_config('group', 'maxaliases')));
            return;
        }

        foreach ($aliases as $alias) {
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            if (!Nickname::isValid($alias)) {
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                // TRANS: Group create form validation error.
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                $this->showForm(sprintf(_('Invalid alias: "%s"'), $alias));
                return;
            }
            if ($this->nicknameExists($alias)) {
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                // TRANS: Group create form validation error.
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                $this->showForm(sprintf(_('Alias "%s" already in use. Try another one.'),
                                        $alias));
                return;
            }
            // XXX assumes alphanum nicknames
            if (strcmp($alias, $nickname) == 0) {
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                // TRANS: Group create form validation error.
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                $this->showForm(_('Alias can\'t be the same as nickname.'));
                return;
            }
        }

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        $mainpage = common_local_url('showgroup', array('nickname' => $nickname));

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        $cur = common_current_user();

        // Checked in prepare() above

        assert(!is_null($cur));

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        $group = User_group::register(array('nickname' => $nickname,
                                            'fullname' => $fullname,
                                            'homepage' => $homepage,
                                            'description' => $description,
                                            'location' => $location,
                                            'aliases'  => $aliases,
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                                            'userid'   => $cur->id,
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                                            'mainpage' => $mainpage,
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                                            'local'    => true));
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        common_redirect($group->homeUrl(), 303);
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    }

    function nicknameExists($nickname)
    {
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        $local = Local_group::staticGet('nickname', $nickname);
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        if (!empty($local)) {
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            return true;
        }

        $alias = Group_alias::staticGet('alias', $nickname);

        if (!empty($alias)) {
            return true;
        }

        return false;
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    }
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}