gnu-social/lib/command.php

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<?php
/*
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* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, 2010 StatusNet, Inc.
*
* 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/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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require_once(INSTALLDIR.'/lib/channel.php');
class Command
{
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var $user = null;
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function __construct($user=null)
{
$this->user = $user;
}
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/**
* Execute the command and send success or error results
* back via the given communications channel.
*
* @param Channel
*/
public function execute($channel)
{
try {
$this->handle($channel);
} catch (CommandException $e) {
$channel->error($this->user, $e->getMessage());
} catch (Exception $e) {
common_log(LOG_ERR, "Error handling " . get_class($this) . ": " . $e->getMessage());
$channel->error($this->user, $e->getMessage());
}
}
/**
* Override this with the meat!
*
* An error to send back to the user may be sent by throwing
* a CommandException with a formatted message.
*
* @param Channel
* @throws CommandException
*/
function handle($channel)
{
return false;
}
/**
* Look up a notice from an argument, by poster's name to get last post
* or notice_id prefixed with #.
*
* @return Notice
* @throws CommandException
*/
function getNotice($arg)
{
$notice = null;
if (Event::handle('StartCommandGetNotice', array($this, $arg, &$notice))) {
if(substr($this->other,0,1)=='#'){
// A specific notice_id #123
$notice = Notice::staticGet(substr($arg,1));
if (!$notice) {
throw new CommandException(_('Notice with that id does not exist'));
}
}
if (Validate::uri($this->other)) {
// A specific notice by URI lookup
$notice = Notice::staticGet('uri', $arg);
}
if (!$notice) {
// Local or remote profile name to get their last notice.
// May throw an exception and report 'no such user'
$recipient = $this->getProfile($arg);
$notice = $recipient->getCurrentNotice();
if (!$notice) {
throw new CommandException(_('User has no last notice'));
}
}
}
Event::handle('EndCommandGetNotice', array($this, $arg, &$notice));
if (!$notice) {
throw new CommandException(_('Notice with that id does not exist'));
}
return $notice;
}
/**
* Look up a local or remote profile by nickname.
*
* @return Profile
* @throws CommandException
*/
function getProfile($arg)
{
$profile = null;
if (Event::handle('StartCommandGetProfile', array($this, $arg, &$profile))) {
$profile =
common_relative_profile($this->user, common_canonical_nickname($arg));
}
Event::handle('EndCommandGetProfile', array($this, $arg, &$profile));
if (!$profile) {
throw new CommandException(sprintf(_('Could not find a user with nickname %s'), $arg));
}
return $profile;
}
/**
* Get a local user by name
* @return User
* @throws CommandException
*/
function getUser($arg)
{
$user = null;
if (Event::handle('StartCommandGetUser', array($this, $arg, &$user))) {
$user = User::staticGet('nickname', $arg);
}
Event::handle('EndCommandGetUser', array($this, $arg, &$user));
if (!$user){
throw new CommandException(sprintf(_('Could not find a local user with nickname %s'),
$arg));
}
return $user;
}
/**
* Get a local or remote group by name.
* @return User_group
* @throws CommandException
*/
function getGroup($arg)
{
$group = null;
if (Event::handle('StartCommandGetGroup', array($this, $arg, &$group))) {
$group = User_group::getForNickname($arg, $this->user->getProfile());
}
Event::handle('EndCommandGetGroup', array($this, $arg, &$group));
if (!$group) {
throw new CommandException(_('No such group.'));
}
return $group;
}
}
class CommandException extends Exception
{
}
class UnimplementedCommand extends Command
{
function handle($channel)
{
$channel->error($this->user, _("Sorry, this command is not yet implemented."));
}
}
class TrackingCommand extends UnimplementedCommand
{
}
class TrackOffCommand extends UnimplementedCommand
{
}
class TrackCommand extends UnimplementedCommand
{
var $word = null;
function __construct($user, $word)
{
parent::__construct($user);
$this->word = $word;
}
}
class UntrackCommand extends UnimplementedCommand
{
var $word = null;
function __construct($user, $word)
{
parent::__construct($user);
$this->word = $word;
}
}
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class NudgeCommand extends Command
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
function handle($channel)
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{
$recipient = $this->getUser($this->other);
if ($recipient->id == $this->user->id) {
throw new CommandException(_('It does not make a lot of sense to nudge yourself!'));
} else {
if ($recipient->email && $recipient->emailnotifynudge) {
mail_notify_nudge($this->user, $recipient);
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}
// XXX: notify by IM
// XXX: notify by SMS
$channel->output($this->user, sprintf(_('Nudge sent to %s'),
$recipient->nickname));
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}
}
}
class InviteCommand extends UnimplementedCommand
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
}
class StatsCommand extends Command
{
function handle($channel)
{
$profile = $this->user->getProfile();
$subs_count = $profile->subscriptionCount();
$subbed_count = $profile->subscriberCount();
$notice_count = $profile->noticeCount();
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$channel->output($this->user, sprintf(_("Subscriptions: %1\$s\n".
"Subscribers: %2\$s\n".
"Notices: %3\$s"),
$subs_count,
$subbed_count,
$notice_count));
}
}
class FavCommand extends Command
{
var $other = null;
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function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
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function handle($channel)
{
$notice = $this->getNotice($this->other);
$fave = Fave::addNew($this->user, $notice);
if (!$fave) {
$channel->error($this->user, _('Could not create favorite.'));
return;
}
// @fixme favorite notification should be triggered
// at a lower level
$other = User::staticGet('id', $notice->profile_id);
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if ($other && $other->id != $user->id) {
if ($other->email && $other->emailnotifyfav) {
mail_notify_fave($other, $this->user, $notice);
}
}
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$this->user->blowFavesCache();
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$channel->output($this->user, _('Notice marked as fave.'));
}
}
class JoinCommand extends Command
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
function handle($channel)
{
$group = $this->getGroup($this->other);
$cur = $this->user;
if ($cur->isMember($group)) {
$channel->error($cur, _('You are already a member of that group'));
return;
}
if (Group_block::isBlocked($group, $cur->getProfile())) {
$channel->error($cur, _('You have been blocked from that group by the admin.'));
return;
}
try {
if (Event::handle('StartJoinGroup', array($group, $cur))) {
Group_member::join($group->id, $cur->id);
Event::handle('EndJoinGroup', array($group, $cur));
}
} catch (Exception $e) {
$channel->error($cur, sprintf(_('Could not join user %s to group %s'),
$cur->nickname, $group->nickname));
return;
}
$channel->output($cur, sprintf(_('%s joined group %s'),
$cur->nickname,
$group->nickname));
}
}
class DropCommand extends Command
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
function handle($channel)
{
$group = $this->getGroup($this->other);
$cur = $this->user;
if (!$group) {
$channel->error($cur, _('No such group.'));
return;
}
if (!$cur->isMember($group)) {
$channel->error($cur, _('You are not a member of that group.'));
return;
}
try {
if (Event::handle('StartLeaveGroup', array($group, $cur))) {
Group_member::leave($group->id, $cur->id);
Event::handle('EndLeaveGroup', array($group, $cur));
}
} catch (Exception $e) {
$channel->error($cur, sprintf(_('Could not remove user %s to group %s'),
$cur->nickname, $group->nickname));
return;
}
$channel->output($cur, sprintf(_('%s left group %s'),
$cur->nickname,
$group->nickname));
}
}
class WhoisCommand extends Command
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
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function handle($channel)
{
$recipient = $this->getProfile($this->other);
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$whois = sprintf(_("%1\$s (%2\$s)"), $recipient->nickname,
$recipient->profileurl);
if ($recipient->fullname) {
$whois .= "\n" . sprintf(_('Fullname: %s'), $recipient->fullname);
}
if ($recipient->location) {
$whois .= "\n" . sprintf(_('Location: %s'), $recipient->location);
}
if ($recipient->homepage) {
$whois .= "\n" . sprintf(_('Homepage: %s'), $recipient->homepage);
}
if ($recipient->bio) {
$whois .= "\n" . sprintf(_('About: %s'), $recipient->bio);
}
$channel->output($this->user, $whois);
}
}
class MessageCommand extends Command
{
var $other = null;
var $text = null;
function __construct($user, $other, $text)
{
parent::__construct($user);
$this->other = $other;
$this->text = $text;
}
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function handle($channel)
{
try {
$other = $this->getUser($this->other);
} catch (CommandException $e) {
try {
$profile = $this->getProfile($this->other);
} catch (CommandException $f) {
throw $e;
}
throw new CommandException(sprintf(_('%s is a remote profile; you can only send direct messages to users on the same server.'), $this->other));
}
$len = mb_strlen($this->text);
if ($len == 0) {
$channel->error($this->user, _('No content!'));
return;
}
$this->text = common_shorten_links($this->text);
if (Message::contentTooLong($this->text)) {
$channel->error($this->user, sprintf(_('Message too long - maximum is %d characters, you sent %d'),
Message::maxContent(), mb_strlen($this->text)));
return;
}
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if (!$other) {
$channel->error($this->user, _('No such user.'));
return;
} else if (!$this->user->mutuallySubscribed($other)) {
$channel->error($this->user, _('You can\'t send a message to this user.'));
return;
} else if ($this->user->id == $other->id) {
$channel->error($this->user, _('Don\'t send a message to yourself; just say it to yourself quietly instead.'));
return;
}
$message = Message::saveNew($this->user->id, $other->id, $this->text, $channel->source());
if ($message) {
$message->notify();
$channel->output($this->user, sprintf(_('Direct message to %s sent'), $this->other));
} else {
$channel->error($this->user, _('Error sending direct message.'));
}
}
}
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class RepeatCommand extends Command
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
function handle($channel)
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{
$notice = $this->getNotice($this->other);
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if($this->user->id == $notice->profile_id)
{
$channel->error($this->user, _('Cannot repeat your own notice'));
return;
}
if ($this->user->getProfile()->hasRepeated($notice->id)) {
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$channel->error($this->user, _('Already repeated that notice'));
return;
}
$repeat = $notice->repeat($this->user->id, $channel->source);
if ($repeat) {
Offload inbox updates to a queue handler to speed up posting online Moved much of the writing that happens when posting a notice to a new queuehandler, distribqueuehandler. This updates tags, groups, replies and inboxes at queue time (or at Web time, if queues are disabled). To make this work well, I had to break up the monolithic Notice::blowCaches() and make cache blowing happen closer to where data is updated. Squashed commit of the following: commit 5257626c62750ac4ac1db0ce2b71410c5711cfa3 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 14:56:41 2010 -0500 slightly better handling of blowing tag memory cache commit 8a22a3cdf6ec28685da129a0313e7b2a0837c9ef Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 01:42:56 2010 -0500 change 'distribute' to 'distrib' so not too long for dbqueue commit 7a063315b0f7fad27cb6fbd2bdd74e253af83e4f Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 01:39:15 2010 -0500 change handle_notice() to handle() in distributqueuehandler commit 1a39ccd28b9994137d7bfd21bb4f230546938e77 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 16:05:25 2010 -0500 error with queuemanager commit e6b3bb93f305cfd2de71a6340b8aa6fb890049b7 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 01:11:34 2010 -0500 Blow memcache at different point rather than one big function for Notice class commit 94d557cdc016187d1d0647ae1794cd94d6fb8ac8 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 00:48:44 2010 -0500 Blow memcache at different point rather than one big function for Notice class commit 1c781dd08c88a35dafc5c01230b4872fd6b95182 Author: Evan Prodromou <evan@status.net> Date: Wed Jan 20 08:54:18 2010 -0500 move broadcasting and distributing to new queuehandler commit da3e46d26b84e4f028f34a13fd2ee373e4c1b954 Author: Evan Prodromou <evan@status.net> Date: Wed Jan 20 08:53:12 2010 -0500 Move distribution of notices to new distribute queue handler
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$channel->output($this->user, sprintf(_('Notice from %s repeated'), $recipient->nickname));
} else {
$channel->error($this->user, _('Error repeating notice.'));
}
}
}
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class ReplyCommand extends Command
{
var $other = null;
var $text = null;
function __construct($user, $other, $text)
{
parent::__construct($user);
$this->other = $other;
$this->text = $text;
}
function handle($channel)
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{
$notice = $this->getNotice($this->other);
$recipient = $notice->getProfile();
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$len = mb_strlen($this->text);
if ($len == 0) {
$channel->error($this->user, _('No content!'));
return;
}
$this->text = common_shorten_links($this->text);
if (Notice::contentTooLong($this->text)) {
$channel->error($this->user, sprintf(_('Notice too long - maximum is %d characters, you sent %d'),
Notice::maxContent(), mb_strlen($this->text)));
return;
}
$notice = Notice::saveNew($this->user->id, $this->text, $channel->source(),
array('reply_to' => $notice->id));
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if ($notice) {
$channel->output($this->user, sprintf(_('Reply to %s sent'), $recipient->nickname));
} else {
$channel->error($this->user, _('Error saving notice.'));
}
Offload inbox updates to a queue handler to speed up posting online Moved much of the writing that happens when posting a notice to a new queuehandler, distribqueuehandler. This updates tags, groups, replies and inboxes at queue time (or at Web time, if queues are disabled). To make this work well, I had to break up the monolithic Notice::blowCaches() and make cache blowing happen closer to where data is updated. Squashed commit of the following: commit 5257626c62750ac4ac1db0ce2b71410c5711cfa3 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 14:56:41 2010 -0500 slightly better handling of blowing tag memory cache commit 8a22a3cdf6ec28685da129a0313e7b2a0837c9ef Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 01:42:56 2010 -0500 change 'distribute' to 'distrib' so not too long for dbqueue commit 7a063315b0f7fad27cb6fbd2bdd74e253af83e4f Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 01:39:15 2010 -0500 change handle_notice() to handle() in distributqueuehandler commit 1a39ccd28b9994137d7bfd21bb4f230546938e77 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 16:05:25 2010 -0500 error with queuemanager commit e6b3bb93f305cfd2de71a6340b8aa6fb890049b7 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 01:11:34 2010 -0500 Blow memcache at different point rather than one big function for Notice class commit 94d557cdc016187d1d0647ae1794cd94d6fb8ac8 Author: Evan Prodromou <evan@status.net> Date: Mon Jan 25 00:48:44 2010 -0500 Blow memcache at different point rather than one big function for Notice class commit 1c781dd08c88a35dafc5c01230b4872fd6b95182 Author: Evan Prodromou <evan@status.net> Date: Wed Jan 20 08:54:18 2010 -0500 move broadcasting and distributing to new queuehandler commit da3e46d26b84e4f028f34a13fd2ee373e4c1b954 Author: Evan Prodromou <evan@status.net> Date: Wed Jan 20 08:53:12 2010 -0500 Move distribution of notices to new distribute queue handler
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}
}
class GetCommand extends Command
{
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var $other = null;
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function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
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function handle($channel)
{
$target = $this->getProfile($this->other);
$notice = $target->getCurrentNotice();
if (!$notice) {
$channel->error($this->user, _('User has no last notice'));
return;
}
$notice_content = $notice->content;
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$channel->output($this->user, $target->nickname . ": " . $notice_content);
}
}
class SubCommand extends Command
{
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var $other = null;
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function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
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function handle($channel)
{
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if (!$this->other) {
$channel->error($this->user, _('Specify the name of the user to subscribe to'));
return;
}
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$target = $this->getProfile($this->other);
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$remote = Remote_profile::staticGet('id', $target->id);
if ($remote) {
throw new CommandException(_("Can't subscribe to OMB profiles by command."));
}
try {
Subscription::start($this->user->getProfile(),
$target);
$channel->output($this->user, sprintf(_('Subscribed to %s'), $this->other));
} catch (Exception $e) {
$channel->error($this->user, $e->getMessage());
}
}
}
class UnsubCommand extends Command
{
var $other = null;
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function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
function handle($channel)
{
if(!$this->other) {
$channel->error($this->user, _('Specify the name of the user to unsubscribe from'));
return;
}
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$target = $this->getProfile($this->other);
try {
Subscription::cancel($this->user->getProfile(),
$target);
$channel->output($this->user, sprintf(_('Unsubscribed from %s'), $this->other));
} catch (Exception $e) {
$channel->error($this->user, $e->getMessage());
}
}
}
class OffCommand extends Command
{
var $other = null;
function __construct($user, $other=null)
{
parent::__construct($user);
$this->other = $other;
}
function handle($channel)
{
if ($other) {
$channel->error($this->user, _("Command not yet implemented."));
} else {
if ($channel->off($this->user)) {
$channel->output($this->user, _('Notification off.'));
} else {
$channel->error($this->user, _('Can\'t turn off notification.'));
}
}
}
}
class OnCommand extends Command
{
var $other = null;
function __construct($user, $other=null)
{
parent::__construct($user);
$this->other = $other;
}
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function handle($channel)
{
if ($other) {
$channel->error($this->user, _("Command not yet implemented."));
} else {
if ($channel->on($this->user)) {
$channel->output($this->user, _('Notification on.'));
} else {
$channel->error($this->user, _('Can\'t turn on notification.'));
}
}
}
}
class LoginCommand extends Command
{
function handle($channel)
{
$disabled = common_config('logincommand','disabled');
$disabled = isset($disabled) && $disabled;
if($disabled) {
$channel->error($this->user, _('Login command is disabled'));
return;
}
try {
$login_token = Login_token::makeNew($this->user);
} catch (Exception $e) {
$channel->error($this->user, $e->getMessage());
}
$channel->output($this->user,
sprintf(_('This link is useable only once, and is good for only 2 minutes: %s'),
common_local_url('otp',
array('user_id' => $login_token->user_id, 'token' => $login_token->token))));
}
}
class LoseCommand extends Command
{
var $other = null;
function __construct($user, $other)
{
parent::__construct($user);
$this->other = $other;
}
function execute($channel)
{
if(!$this->other) {
$channel->error($this->user, _('Specify the name of the user to unsubscribe from'));
return;
}
$result = Subscription::cancel($this->other, $this->user);
if ($result) {
$channel->output($this->user, sprintf(_('Unsubscribed %s'), $this->other));
} else {
$channel->error($this->user, $result);
}
}
}
class SubscriptionsCommand extends Command
{
function handle($channel)
{
$profile = $this->user->getSubscriptions(0);
$nicknames=array();
while ($profile->fetch()) {
$nicknames[]=$profile->nickname;
}
if(count($nicknames)==0){
$out=_('You are not subscribed to anyone.');
}else{
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$out = ngettext('You are subscribed to this person:',
'You are subscribed to these people:',
count($nicknames));
$out .= ' ';
$out .= implode(', ',$nicknames);
}
$channel->output($this->user,$out);
}
}
class SubscribersCommand extends Command
{
function handle($channel)
{
$profile = $this->user->getSubscribers();
$nicknames=array();
while ($profile->fetch()) {
$nicknames[]=$profile->nickname;
}
if(count($nicknames)==0){
$out=_('No one is subscribed to you.');
}else{
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$out = ngettext('This person is subscribed to you:',
'These people are subscribed to you:',
count($nicknames));
$out .= ' ';
$out .= implode(', ',$nicknames);
}
$channel->output($this->user,$out);
}
}
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class GroupsCommand extends Command
{
function handle($channel)
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{
$group = $this->user->getGroups();
$groups=array();
while ($group->fetch()) {
$groups[]=$group->nickname;
}
if(count($groups)==0){
$out=_('You are not a member of any groups.');
}else{
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$out = ngettext('You are a member of this group:',
'You are a member of these groups:',
count($nicknames));
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$out.=implode(', ',$groups);
}
$channel->output($this->user,$out);
}
}
class HelpCommand extends Command
{
function handle($channel)
{
$channel->output($this->user,
_("Commands:\n".
"on - turn on notifications\n".
"off - turn off notifications\n".
"help - show this help\n".
"follow <nickname> - subscribe to user\n".
"groups - lists the groups you have joined\n".
"subscriptions - list the people you follow\n".
"subscribers - list the people that follow you\n".
"leave <nickname> - unsubscribe from user\n".
"d <nickname> <text> - direct message to user\n".
"get <nickname> - get last notice from user\n".
"whois <nickname> - get profile info on user\n".
"lose <nickname> - force user to stop following you\n".
"fav <nickname> - add user's last notice as a 'fave'\n".
"fav #<notice_id> - add notice with the given id as a 'fave'\n".
"repeat #<notice_id> - repeat a notice with a given id\n".
"repeat <nickname> - repeat the last notice from user\n".
"reply #<notice_id> - reply to notice with a given id\n".
"reply <nickname> - reply to the last notice from user\n".
"join <group> - join group\n".
"login - Get a link to login to the web interface\n".
"drop <group> - leave group\n".
"stats - get your stats\n".
"stop - same as 'off'\n".
"quit - same as 'off'\n".
"sub <nickname> - same as 'follow'\n".
"unsub <nickname> - same as 'leave'\n".
"last <nickname> - same as 'get'\n".
"on <nickname> - not yet implemented.\n".
"off <nickname> - not yet implemented.\n".
"nudge <nickname> - remind a user to update.\n".
"invite <phone number> - not yet implemented.\n".
"track <word> - not yet implemented.\n".
"untrack <word> - not yet implemented.\n".
"track off - not yet implemented.\n".
"untrack all - not yet implemented.\n".
"tracks - not yet implemented.\n".
"tracking - not yet implemented.\n"));
}
}