404 lines
12 KiB
PHP
404 lines
12 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Remote Follow implementation for GNU social
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*
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* @package GNUsocial
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* @author Bruno Casteleiro <brunoccast@fc.up.pt>
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* @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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defined('GNUSOCIAL') || die();
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/**
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* Remote-follow follow action
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*
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* @category Plugin
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* @package GNUsocial
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* @author Bruno Casteleiro <brunoccast@fc.up.pt>
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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class RemoteFollowSubAction extends Action
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{
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protected $uri; // acct: or uri of remote entity
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protected $profile; // profile of remote entity, if valid
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protected function prepare(array $args = [])
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{
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parent::prepare($args);
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if (!common_logged_in()) {
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common_set_returnto($_SERVER['REQUEST_URI']);
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if (Event::handle('RedirectToLogin', [$this, null])) {
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common_redirect(common_local_url('login'), 303);
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}
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return false;
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}
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if (!$this->profile && $this->arg('profile')) {
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$this->uri = $this->trimmed('profile');
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$profile = null;
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if (!Event::handle('RemoteFollowPullProfile', [$this->uri, &$profile]) && !is_null($profile)) {
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$this->profile = $profile;
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} else {
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// TRANS: Error displayed when there's failure in fetching the remote profile.
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$this->error = _m('Sorry, we could not reach that address. ' .
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'Please make sure it is a valid address and try again later.');
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}
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}
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return true;
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}
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/**
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* Handles the submission.
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*
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* @return void
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*/
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protected function handle(): void
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{
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parent::handle();
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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$this->handlePost();
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} else {
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$this->showForm();
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}
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}
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/**
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* Show the initial form, when we haven't yet been given a valid
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* remote profile.
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*
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* @return void
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*/
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public function showInputForm(): void
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{
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$this->elementStart('form', ['method' => 'post',
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'id' => 'form_ostatus_sub',
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'class' => 'form_settings',
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'action' => $this->selfLink()]);
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$this->hidden('token', common_session_token());
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$this->elementStart('fieldset', ['id' => 'settings_feeds']);
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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$this->input(
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'profile',
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// TRANS: Field label for a field that takes an user address.
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_m('Subscribe to'),
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$this->uri,
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// TRANS: Tooltip for field label "Subscribe to".
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_m('User\'s address, like nickname@example.com or http://example.net/nickname.')
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);
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$this->elementEnd('li');
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$this->elementEnd('ul');
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// TRANS: Button text.
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$this->submit('validate', _m('BUTTON', 'Continue'));
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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}
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/**
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* Show the preview-and-confirm form. We've got a valid remote
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* profile and are ready to poke it!
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*
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* @return void
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*/
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public function showPreviewForm(): void
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{
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if (!$this->preview()) {
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return;
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}
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$this->elementStart('div', 'entity_actions');
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$this->elementStart('ul');
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$this->elementStart('li', 'entity_subscribe');
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$this->elementStart('form', ['method' => 'post',
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'id' => 'form_ostatus_sub',
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'class' => 'form_remote_authorize',
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'action' => $this->selfLink()]);
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$this->elementStart('fieldset');
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$this->hidden('token', common_session_token());
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$this->hidden('profile', $this->uri);
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$this->submit(
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'submit',
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// TRANS: Button text.
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_m('BUTTON', 'Confirm'),
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'submit',
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null,
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// TRANS: Tooltip for button "Confirm".
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_m('Subscribe to this user')
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);
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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$this->elementEnd('li');
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$this->elementEnd('ul');
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$this->elementEnd('div');
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}
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/**
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* Show a preview for a remote user's profile.
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*
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* @return bool true if we're ok to try subscribing, false otherwise
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*/
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public function preview(): bool
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{
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if ($this->scoped->isSubscribed($this->profile)) {
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$this->element(
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'div',
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['class' => 'error'],
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// TRANS: Extra paragraph in remote profile view when already subscribed.
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_m('You are already subscribed to this user.')
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);
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$ok = false;
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} else {
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$ok = true;
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}
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$avatarUrl = $this->profile->avatarUrl(AVATAR_PROFILE_SIZE);
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$this->showEntity(
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$this->profile,
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$this->profile->getUrl(),
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$avatarUrl,
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$this->profile->getDescription()
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);
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return $ok;
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}
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/**
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* Show someone's profile.
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*
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* @return void
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*/
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public function showEntity(Profile $entity, string $profile_url, string $avatar, ?string $note): void
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{
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$nickname = $entity->getNickname();
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$fullname = $entity->getFullname();
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$homepage = $entity->getHomepage();
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$location = $entity->getLocation();
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$this->elementStart('div', 'entity_profile vcard');
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$this->element('img', ['src' => $avatar,
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'class' => 'photo avatar entity_depiction',
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'width' => AVATAR_PROFILE_SIZE,
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'height' => AVATAR_PROFILE_SIZE,
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'alt' => $nickname]);
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$hasFN = ($fullname !== '') ? 'nickname' : 'fn nickname entity_nickname';
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$this->elementStart('a', ['href' => $profile_url,
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'class' => 'url '.$hasFN]);
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$this->text($nickname);
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$this->elementEnd('a');
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if (!is_null($fullname)) {
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$this->elementStart('div', 'fn entity_fn');
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$this->text($fullname);
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$this->elementEnd('div');
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}
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$location_name = (is_null($location) ? null : $location->getName());
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if (!is_null($location_name)) {
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$this->elementStart('div', 'label entity_location');
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$this->text($location_name);
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$this->elementEnd('div');
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}
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if (!is_null($homepage)) {
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$this->elementStart('a', ['href' => $homepage,
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'class' => 'url entity_url']);
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$this->text($homepage);
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$this->elementEnd('a');
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}
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if (!is_null($note)) {
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$this->elementStart('div', 'note entity_note');
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$this->text($note);
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$this->elementEnd('div');
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}
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$this->elementEnd('div');
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}
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/**
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* Redirect on successful remote follow
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*
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* @return void
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*/
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public function success(): void
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{
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$url = common_local_url('subscriptions', ['nickname' => $this->scoped->getNickname()]);
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common_redirect($url, 303);
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}
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/**
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* Attempt to finalize subscription.
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*
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* @return void
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*/
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public function follow(): void
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{
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if ($this->scoped->isSubscribed($this->profile)) {
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// TRANS: Remote subscription dialog error.
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$this->showForm(_m('Already subscribed!'));
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} elseif (Subscription::start($this->scoped, $this->profile)) {
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$this->success();
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} else {
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// TRANS: Remote subscription dialog error.
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$this->showForm(_m('Remote subscription failed!'));
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}
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}
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/**
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* Handle posts to this form
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*
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* @return void
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*/
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public function handlePost(): void
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{
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// CSRF protection
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$token = $this->trimmed('token');
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if (!$token || $token != common_session_token()) {
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// TRANS: Client error displayed when the session token does not match or is not given.
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$this->showForm(_m('There was a problem with your session token. '.
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'Try again, please.'));
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return;
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}
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if ($this->profile && $this->arg('submit')) {
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$this->follow();
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return;
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}
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$this->showForm();
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}
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/**
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* Show the appropriate form based on our input state.
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*
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* @return void
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*/
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public function showForm(?string $err = null): void
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{
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if ($err) {
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$this->error = $err;
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}
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if ($this->boolean('ajax')) {
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$this->startHTML('text/xml;charset=utf-8');
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$this->elementStart('head');
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// TRANS: Form title.
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$this->element('title', null, _m('Subscribe to user'));
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$this->elementEnd('head');
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$this->elementStart('body');
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$this->showContent();
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$this->elementEnd('body');
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$this->endHTML();
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} else {
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$this->showPage();
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}
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}
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/**
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* Title of the page
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*
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* @return string title of the page
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*/
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public function title(): string
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{
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// TRANS: Page title for remote subscription form.
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return !empty($this->uri) ? _m('Confirm') : _m('Remote subscription');
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}
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/**
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* Instructions for use
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*
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* @return string instructions for use
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*/
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public function getInstructions(): string
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{
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// TRANS: Instructions.
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return _m('You can subscribe to users from other supported sites. Paste their address or profile URI below:');
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}
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/**
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* Show page notice.
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*
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* @return void
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*/
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public function showPageNotice(): void
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{
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if (!empty($this->error)) {
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$this->element('p', 'error', $this->error);
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}
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}
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/**
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* Content area of the page
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*
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* @return void
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*/
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public function showContent(): void
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{
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if ($this->profile) {
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$this->showPreviewForm();
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} else {
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$this->showInputForm();
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}
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}
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/**
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* Show javascript headers
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*
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* @return void
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*/
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public function showScripts(): void
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{
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parent::showScripts();
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$this->autofocus('profile');
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}
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/**
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* Return url for this action
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*
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* @return string
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*/
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public function selfLink(): string
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{
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return common_local_url('RemoteFollowSub');
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}
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/**
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* Disable the send-notice form at the top of the page.
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* This is really just a hack for the broken CSS in the Cloudy theme,
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* I think; copying from other non-notice-navigation pages that do this
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* as well. There will be plenty of others also broken.
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*
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* @fixme fix the cloudy theme
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* @fixme do this in a more general way
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*/
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public function showNoticeForm(): void
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{
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// nop
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}
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}
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