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<?php
/*
Question2Answer by Gideon Greenspan and contributors
http://www.question2answer.org/
File: qa-include/qa-app-messages.php
Description: Handling private or public messages (wall posts)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
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 General Public License for more details.
More about this license: http://www.question2answer.org/license.php
*/
if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
header('Location: ../');
exit;
}
function qa_wall_error_html($fromuserid, $touserid, $touserflags)
/*
Returns an HTML string describing the reason why user $fromuserid cannot post on the wall of $touserid who has
user flags $touserflags. If there is no such reason the function returns false.
*/
{
require_once QA_INCLUDE_DIR.'app/limits.php';
if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
if (!QA_FINAL_EXTERNAL_USERS && qa_opt('allow_user_walls')) {
if ( ($touserflags & QA_USER_FLAGS_NO_WALL_POSTS) && !(isset($fromuserid) && $fromuserid == $touserid) )
return qa_lang_html('profile/post_wall_blocked');
else {
switch (qa_user_permit_error('permit_post_wall', QA_LIMIT_WALL_POSTS)) {
case 'limit':
return qa_lang_html('profile/post_wall_limit');
break;
case 'login':
return qa_insert_login_links(qa_lang_html('profile/post_wall_must_login'), qa_request());
break;
case 'confirm':
return qa_insert_login_links(qa_lang_html('profile/post_wall_must_confirm'), qa_request());
break;
case 'approve':
return qa_lang_html('profile/post_wall_must_be_approved');
break;
case false:
return false;
break;
}
}
}
return qa_lang_html('users/no_permission');
}
function qa_wall_add_post($userid, $handle, $cookieid, $touserid, $tohandle, $content, $format)
/*
Adds a post to the wall of user $touserid with handle $tohandle, containing $content in $format (e.g. '' for text or 'html')
The post is by user $userid with handle $handle, and $cookieid is the user's current cookie (used for reporting the event).
*/
{
if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
require_once QA_INCLUDE_DIR.'app/format.php';
require_once QA_INCLUDE_DIR.'db/messages.php';
$messageid = qa_db_message_create($userid, $touserid, $content, $format, true);
qa_db_user_recount_posts($touserid);
qa_report_event('u_wall_post', $userid, $handle, $cookieid, array(
'userid' => $touserid,
'handle' => $tohandle,
'messageid' => $messageid,
'content' => $content,
'format' => $format,
'text' => qa_viewer_text($content, $format),
));
return $messageid;
}
function qa_wall_delete_post($userid, $handle, $cookieid, $message)
/*
Deletes the wall post described in $message (as obtained via qa_db_recent_messages_selectspec()). The deletion was performed
by user $userid with handle $handle, and $cookieid is the user's current cookie (all used for reporting the event).
*/
{
require_once QA_INCLUDE_DIR.'db/messages.php';
qa_db_message_delete($message['messageid']);
qa_db_user_recount_posts($message['touserid']);
qa_report_event('u_wall_delete', $userid, $handle, $cookieid, array(
'messageid' => $message['messageid'],
'oldmessage' => $message,
));
}
function qa_wall_posts_add_rules($usermessages, $start)
/*
Return the list of messages in $usermessages (as obtained via qa_db_recent_messages_selectspec()) with additional
fields indicating what actions can be performed on them by the current user. The messages were retrieved beginning
at offset $start in the database. Currently only 'deleteable' is relevant.
*/
{
if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
$userid = qa_get_logged_in_userid();
$userdeleteall = !(qa_user_permit_error('permit_hide_show') || qa_user_permit_error('permit_delete_hidden'));
// reuse "Hiding or showing any post" and "Deleting hidden posts" permissions
$userrecent = $start == 0 && isset($userid); // User can delete all of the recent messages they wrote on someone's wall...
foreach ($usermessages as $key => $message) {
if ($message['fromuserid'] != $userid)
$userrecent = false; // ... until we come across one that they didn't write (which could be a reply)
$usermessages[$key]['deleteable'] =
$message['touserid'] == $userid || // if it's this user's wall
($userrecent && $message['fromuserid'] == $userid) || // if it's one the user wrote that no one replied to yet
$userdeleteall; // if the user has enough permissions to delete from any wall
}
return $usermessages;
}
function qa_wall_post_view($message)
/*
Returns an element to add to $qa_content['message_list']['messages'] for $message (as obtained via
qa_db_recent_messages_selectspec() and then qa_wall_posts_add_rules()).
*/
{
require_once QA_INCLUDE_DIR.'app/format.php';
$options = qa_message_html_defaults();
$htmlfields = qa_message_html_fields($message, $options);
if ($message['deleteable']) {
$htmlfields['form'] = array(
'style' => 'light',
'buttons' => array(
'delete' => array(
'tags' => 'name="m'.qa_html($message['messageid']).'_dodelete" onclick="return qa_wall_post_click('.qa_js($message['messageid']).', this);"',
'label' => qa_lang_html('question/delete_button'),
'popup' => qa_lang_html('profile/delete_wall_post_popup'),
),
),
);
}
return $htmlfields;
}
function qa_wall_view_more_link($handle, $start)
/*
Returns an element to add to $qa_content['message_list']['messages'] with a link to view all wall posts
*/
{
$url = qa_path_html( 'user/'.$handle.'/wall', array('start' => $start) );
return array(
'content' => '<a href="'.$url.'">'.qa_lang_html('profile/wall_view_more').'</a>',
);
}
function qa_pm_delete($userid, $handle, $cookieid, $message, $box)
/*
Hides the private message described in $message (as obtained via qa_db_messages_inbox_selectspec() or qa_db_messages_outbox_selectspec()).
If both sender and receiver have hidden the message, it gets deleted from the database.
Note: currently no event is reported here, so $handle/$cookieid are unused.
*/
{
require_once QA_INCLUDE_DIR.'db/messages.php';
qa_db_message_user_hide($message['messageid'], $box);
qa_db_message_delete($message['messageid'], false);
}
/*
Omit PHP closing tag to help avoid accidental output
*/