gnu-social/plugins/OStatus/actions/ostatussub.php

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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2009-2010, StatusNet, Inc.
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*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @package OStatusPlugin
* @maintainer Brion Vibber <brion@status.net>
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*/
if (!defined('GNUSOCIAL') && !defined('STATUSNET')) { exit(1); }
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/**
* Key UI methods:
*
* showInputForm() - form asking for a remote profile account or URL
* We end up back here on errors
*
* showPreviewForm() - surrounding form for preview-and-confirm
* preview() - display profile for a remote user
*
* success() - redirects to subscriptions page on subscribe
*/
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class OStatusSubAction extends Action
{
protected $profile_uri; // provided acct: or URI of remote entity
protected $oprofile; // Ostatus_profile of remote entity, if valid
protected function prepare(array $args=array())
{
parent::prepare($args);
if (!common_logged_in()) {
// XXX: selfURL() didn't work. :<
common_set_returnto($_SERVER['REQUEST_URI']);
if (Event::handle('RedirectToLogin', array($this, null))) {
common_redirect(common_local_url('login'), 303);
}
return false;
}
if ($this->pullRemoteProfile()) {
$this->validateRemoteProfile();
}
return true;
}
/**
* Handle the submission.
*/
protected function handle()
{
parent::handle();
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$this->handlePost();
} else {
$this->showForm();
}
}
/**
* Show the initial form, when we haven't yet been given a valid
* remote profile.
*/
function showInputForm()
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{
$this->elementStart('form', array('method' => 'post',
'id' => 'form_ostatus_sub',
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'class' => 'form_settings',
'action' => $this->selfLink()));
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$this->hidden('token', common_session_token());
$this->elementStart('fieldset', array('id' => 'settings_feeds'));
$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
$this->input('profile',
// TRANS: Field label for a field that takes an OStatus user address.
_m('Subscribe to'),
$this->profile_uri,
// TRANS: Tooltip for field label "Subscribe to".
_m('OStatus user\'s address, like nickname@example.com or http://example.net/nickname.'));
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$this->elementEnd('li');
$this->elementEnd('ul');
// TRANS: Button text.
$this->submit('validate', _m('BUTTON','Continue'));
$this->elementEnd('fieldset');
$this->elementEnd('form');
}
/**
* Show the preview-and-confirm form. We've got a valid remote
* profile and are ready to poke it!
*
* This controls the wrapper form; actual profile display will
* be in previewUser() or previewGroup() depending on the type.
*/
function showPreviewForm()
{
$ok = $this->preview();
if (!$ok) {
// @todo FIXME maybe provide a cancel button or link back?
return;
}
$this->elementStart('div', 'entity_actions');
$this->elementStart('ul');
$this->elementStart('li', 'entity_subscribe');
$this->elementStart('form', array('method' => 'post',
'id' => 'form_ostatus_sub',
'class' => 'form_remote_authorize',
'action' =>
$this->selfLink()));
$this->elementStart('fieldset');
$this->hidden('token', common_session_token());
$this->hidden('profile', $this->profile_uri);
if ($this->oprofile->isGroup()) {
// TRANS: Button text.
$this->submit('submit', _m('Join'), 'submit', null,
// TRANS: Tooltip for button "Join".
_m('BUTTON','Join this group'));
} else {
// TRANS: Button text.
$this->submit('submit', _m('BUTTON','Confirm'), 'submit', null,
// TRANS: Tooltip for button "Confirm".
_m('Subscribe to this user'));
}
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$this->elementEnd('fieldset');
$this->elementEnd('form');
$this->elementEnd('li');
$this->elementEnd('ul');
$this->elementEnd('div');
}
/**
* Show a preview for a remote user's profile
* @return boolean true if we're ok to try subscribing
*/
function preview()
{
// Throws NoProfileException on localProfile when remote user's Profile not found
$profile = $this->oprofile->localProfile();
if ($this->scoped->isSubscribed($profile)) {
$this->element('div', array('class' => 'error'),
// TRANS: Extra paragraph in remote profile view when already subscribed.
_m('You are already subscribed to this user.'));
$ok = false;
} else {
$ok = true;
}
$avatarUrl = $profile->avatarUrl(AVATAR_PROFILE_SIZE);
$this->showEntity($profile,
$profile->profileurl,
$avatarUrl,
$profile->bio);
return $ok;
}
function showEntity($entity, $profile, $avatar, $note)
{
$nickname = $entity->nickname;
$fullname = $entity->fullname;
$homepage = $entity->homepage;
$location = $entity->location;
$this->elementStart('div', 'entity_profile vcard');
$this->element('img', array('src' => $avatar,
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'class' => 'photo avatar entity_depiction',
'width' => AVATAR_PROFILE_SIZE,
'height' => AVATAR_PROFILE_SIZE,
'alt' => $nickname));
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$hasFN = ($fullname !== '') ? 'nickname' : 'fn nickname entity_nickname';
$this->elementStart('a', array('href' => $profile,
'class' => 'url '.$hasFN));
$this->text($nickname);
$this->elementEnd('a');
if (!is_null($fullname)) {
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$this->elementStart('div', 'fn entity_fn');
$this->text($fullname);
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$this->elementEnd('div');
}
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if (!is_null($location)) {
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$this->elementStart('div', 'label entity_location');
$this->text($location);
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$this->elementEnd('div');
}
if (!is_null($homepage)) {
$this->elementStart('a', array('href' => $homepage,
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'class' => 'url entity_url'));
$this->text($homepage);
$this->elementEnd('a');
}
if (!is_null($note)) {
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$this->elementStart('div', 'note entity_note');
$this->text($note);
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$this->elementEnd('div');
}
$this->elementEnd('div');
}
/**
* Redirect on successful remote user subscription
*/
function success()
{
$url = common_local_url('subscriptions', array('nickname' => $this->scoped->nickname));
common_redirect($url, 303);
}
/**
* Pull data for a remote profile and check if it's valid.
* Fills out error UI string in $this->error
* Fills out $this->oprofile on success.
*
* @return boolean
*/
function pullRemoteProfile()
{
$validate = new Validate();
$this->profile_uri = Discovery::normalize($this->trimmed('profile'));
try {
if (Discovery::isAcct($this->profile_uri) && $validate->email(mb_substr($this->profile_uri, 5))) {
$this->oprofile = Ostatus_profile::ensureWebfinger($this->profile_uri);
} else if ($validate->uri($this->profile_uri)) {
$this->oprofile = Ostatus_profile::ensureProfileURL($this->profile_uri);
} else {
// TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
// TRANS: and example.net, as these are official standard domain names for use in examples.
$this->error = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.");
common_debug('Invalid address format.', __FILE__);
return false;
}
return true;
} catch (FeedSubBadURLException $e) {
// TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
// TRANS: and example.net, as these are official standard domain names for use in examples.
$this->error = _m('Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.');
common_debug('Invalid URL or could not reach server.', __FILE__);
} catch (FeedSubBadResponseException $e) {
// TRANS: Error text.
$this->error = _m('Sorry, we could not reach that feed. Please try that OStatus address again later.');
common_debug('Cannot read feed; server returned error.', __FILE__);
} catch (FeedSubEmptyException $e) {
// TRANS: Error text.
$this->error = _m('Sorry, we could not reach that feed. Please try that OStatus address again later.');
common_debug('Cannot read feed; server returned an empty page.', __FILE__);
} catch (FeedSubBadHTMLException $e) {
// TRANS: Error text.
$this->error = _m('Sorry, we could not reach that feed. Please try that OStatus address again later.');
common_debug('Bad HTML, could not find feed link.', __FILE__);
} catch (FeedSubNoFeedException $e) {
// TRANS: Error text.
$this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
common_debug('Could not find a feed linked from this URL.', __FILE__);
} catch (FeedSubUnrecognizedTypeException $e) {
// TRANS: Error text.
$this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
common_debug('Not a recognized feed type.', __FILE__);
} catch (FeedSubNoHubException $e) {
// TRANS: Error text.
$this->error = _m("Sorry, that feed is not Pubsubhubub enabled.");
common_debug('No hub found.', __FILE__);
} catch (Exception $e) {
// Any new ones we forgot about
// TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
// TRANS: and example.net, as these are official standard domain names for use in examples.
$this->error = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.");
common_debug(sprintf('Bad feed URL: %s %s', get_class($e), $e->getMessage()), __FILE__);
}
return false;
}
function validateRemoteProfile()
{
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// Send us to the respective subscription form for conf
if ($this->oprofile->isGroup()) {
$target = common_local_url('ostatusgroup', array(), array('profile' => $this->profile_uri));
common_redirect($target, 303);
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} else if ($this->oprofile->isPeopletag()) {
$target = common_local_url('ostatuspeopletag', array(), array('profile' => $this->profile_uri));
common_redirect($target, 303);
}
}
/**
* Attempt to finalize subscription.
* validateFeed must have been run first.
*
* Calls showForm on failure or success on success.
*/
function saveFeed()
{
// And subscribe the current user to the local profile
$local = $this->oprofile->localProfile();
if ($this->scoped->isSubscribed($local)) {
// TRANS: OStatus remote subscription dialog error.
$this->showForm(_m('Already subscribed!'));
} elseif (Subscription::start($this->scoped, $local)) {
$this->success();
} else {
// TRANS: OStatus remote subscription dialog error.
$this->showForm(_m('Remote subscription failed!'));
}
}
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/**
* Handle posts to this form
*
* @return void
*/
function handlePost()
{
// CSRF protection
$token = $this->trimmed('token');
if (!$token || $token != common_session_token()) {
// TRANS: Client error displayed when the session token does not match or is not given.
$this->showForm(_m('There was a problem with your session token. '.
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'Try again, please.'));
return;
}
if ($this->oprofile) {
if ($this->arg('submit')) {
$this->saveFeed();
return;
}
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}
$this->showForm();
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}
/**
* Show the appropriate form based on our input state.
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*/
function showForm($err=null)
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{
if ($err) {
$this->error = $err;
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}
if ($this->boolean('ajax')) {
$this->startHTML('text/xml;charset=utf-8');
$this->elementStart('head');
// TRANS: Form title.
$this->element('title', null, _m('Subscribe to user'));
$this->elementEnd('head');
$this->elementStart('body');
$this->showContent();
$this->elementEnd('body');
$this->endHTML();
} else {
$this->showPage();
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}
}
/**
* Title of the page
*
* @return string Title of the page
*/
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function title()
{
// TRANS: Page title for OStatus remote subscription form.
return _m('Confirm');
}
/**
* Instructions for use
*
* @return instructions for use
*/
function getInstructions()
{
// TRANS: Instructions.
return _m('You can subscribe to users from other supported sites. Paste their address or profile URI below:');
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}
function showPageNotice()
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{
if (!empty($this->error)) {
$this->element('p', 'error', $this->error);
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}
}
/**
* Content area of the page
*
* Shows a form for associating a remote OStatus account with this
* StatusNet account.
*
* @return void
*/
function showContent()
{
if ($this->oprofile) {
$this->showPreviewForm();
} else {
$this->showInputForm();
}
}
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function showScripts()
{
parent::showScripts();
$this->autofocus('feedurl');
}
function selfLink()
{
return common_local_url('ostatussub');
}
/**
* Disable the send-notice form at the top of the page.
* This is really just a hack for the broken CSS in the Cloudy theme,
* I think; copying from other non-notice-navigation pages that do this
* as well. There will be plenty of others also broken.
*
* @fixme fix the cloudy theme
* @fixme do this in a more general way
*/
function showNoticeForm() {
// nop
}
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}