324 lines
10 KiB
PHP
324 lines
10 KiB
PHP
<?php
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require_once('include/items.php');
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function dfrn_feed(&$a, $dfrn_id, $owner_nick, $last_update, $direction = 0) {
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$sitefeed = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
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$public_feed = (($dfrn_id) ? false : true);
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$starred = false; // not yet implemented, possible security issues
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$converse = false;
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if($public_feed && $a->argc > 2) {
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for($x = 2; $x < $a->argc; $x++) {
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if($a->argv[$x] == 'converse')
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$converse = true;
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if($a->argv[$x] == 'starred')
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$starred = true;
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if($a->argv[$x] === 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1]))
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$category = $a->argv[$x+1];
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}
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}
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// default permissions - anonymous user
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$sql_extra = " AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid` = '' AND `item`.`deny_gid` = '' ";
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$r = q("SELECT `contact`.*, `user`.`uid` AS `user_uid`, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
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FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
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WHERE `contact`.`self` = 1 AND `user`.`nickname` = '%s' LIMIT 1",
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dbesc($owner_nick)
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);
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if(! count($r))
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killme();
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$owner = $r[0];
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$owner_id = $owner['user_uid'];
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$owner_nick = $owner['nickname'];
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$birthday = feed_birthday($owner_id,$owner['timezone']);
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$sql_post_table = "";
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$visibility = "";
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if(! $public_feed) {
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$sql_extra = '';
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switch($direction) {
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case (-1):
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$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
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$my_id = $dfrn_id;
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break;
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case 0:
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$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '1:' . $dfrn_id;
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break;
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case 1:
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$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '0:' . $dfrn_id;
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break;
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default:
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return false;
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break; // NOTREACHED
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}
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$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
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intval($owner_id)
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);
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if(! count($r))
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killme();
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$contact = $r[0];
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require_once('include/security.php');
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$groups = init_groups_visitor($contact['id']);
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if(count($groups)) {
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for($x = 0; $x < count($groups); $x ++)
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$groups[$x] = '<' . intval($groups[$x]) . '>' ;
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$gs = implode('|', $groups);
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}
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else
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$gs = '<<>>' ; // Impossible to match
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$sql_extra = sprintf("
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AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' )
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AND ( `deny_cid` = '' OR NOT `deny_cid` REGEXP '<%d>' )
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AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
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AND ( `deny_gid` = '' OR NOT `deny_gid` REGEXP '%s')
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",
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intval($contact['id']),
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intval($contact['id']),
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dbesc($gs),
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dbesc($gs)
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);
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}
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if($public_feed)
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$sort = 'DESC';
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else
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$sort = 'ASC';
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$date_field = "`changed`";
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$sql_order = "`item`.`parent` ".$sort.", `item`.`created` ASC";
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if(! strlen($last_update))
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$last_update = 'now -30 days';
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if(isset($category)) {
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$sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
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dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($owner_id));
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//$sql_extra .= file_tag_file_query('item',$category,'category');
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}
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if($public_feed) {
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if(! $converse)
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$sql_extra .= " AND `contact`.`self` = 1 ";
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}
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$check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
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// AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
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// dbesc($check_date),
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$r = q("SELECT STRAIGHT_JOIN `item`.*, `item`.`id` AS `item_id`,
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`contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
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`contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
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`contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
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`contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`,
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`sign`.`signed_text`, `sign`.`signature`, `sign`.`signer`
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FROM `item` $sql_post_table
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INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
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AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
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LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
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WHERE `item`.`uid` = %d AND `item`.`visible` = 1 and `item`.`moderated` = 0 AND `item`.`parent` != 0
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AND ((`item`.`wall` = 1) $visibility) AND `item`.$date_field > '%s'
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$sql_extra
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ORDER BY $sql_order LIMIT 0, 300",
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intval($owner_id),
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dbesc($check_date),
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dbesc($sort)
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);
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// Will check further below if this actually returned results.
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// We will provide an empty feed if that is the case.
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$items = $r;
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//$feed_template = get_markup_template(($dfrn_id) ? 'atom_feed_dfrn.tpl' : 'atom_feed.tpl');
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//$atom = '';
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$doc = new DOMDocument('1.0', 'utf-8');
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$doc->formatOutput = true;
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$xpath = new DomXPath($doc);
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$xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
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$xpath->registerNamespace('thr', "http://purl.org/syndication/thread/1.0");
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$xpath->registerNamespace('georss', "http://www.georss.org/georss");
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$xpath->registerNamespace('activity', "http://activitystrea.ms/spec/1.0/");
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$xpath->registerNamespace('media', "http://purl.org/syndication/atommedia");
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$xpath->registerNamespace('poco', "http://portablecontacts.net/spec/1.0");
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$xpath->registerNamespace('ostatus', "http://ostatus.org/schema/1.0");
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$xpath->registerNamespace('statusnet', "http://status.net/schema/api/1/");
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$root = ostatus_add_header($doc, $owner);
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dfrn_add_header($root, $doc, $xpath, $owner);
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// Todo $hubxml = feed_hublinks();
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// Todo $salmon = feed_salmonlinks($owner_nick);
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// todo $alternatelink = $owner['url'];
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/*
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if(isset($category))
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$alternatelink .= "/category/".$category;
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$atom .= replace_macros($feed_template, array(
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'$version' => xmlify(FRIENDICA_VERSION),
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'$feed_id' => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
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'$feed_title' => xmlify($owner['name']),
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'$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
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'$hub' => $hubxml,
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'$salmon' => $salmon,
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'$alternatelink' => xmlify($alternatelink),
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'$name' => xmlify($owner['name']),
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'$profile_page' => xmlify($owner['url']),
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'$photo' => xmlify($owner['photo']),
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'$thumb' => xmlify($owner['thumb']),
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'$picdate' => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
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'$uridate' => xmlify(datetime_convert('UTC','UTC',$owner['uri-date'] . '+00:00' , ATOM_TIME)) ,
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'$namdate' => xmlify(datetime_convert('UTC','UTC',$owner['name-date'] . '+00:00' , ATOM_TIME)) ,
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'$birthday' => ((strlen($birthday)) ? '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>' : ''),
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'$community' => (($owner['page-flags'] == PAGE_COMMUNITY) ? '<dfrn:community>1</dfrn:community>' : '')
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));
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*/
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call_hooks('atom_feed', $atom);
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if(! count($items)) {
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call_hooks('atom_feed_end', $atom);
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//$atom .= '</feed>' . "\r\n";
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//return $atom;
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return(trim($doc->saveXML()));
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}
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foreach($items as $item) {
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// prevent private email from leaking.
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if($item['network'] === NETWORK_MAIL)
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continue;
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// public feeds get html, our own nodes use bbcode
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if($public_feed) {
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$type = 'html';
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// catch any email that's in a public conversation and make sure it doesn't leak
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if($item['private'])
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continue;
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}
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else {
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$type = 'text';
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}
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//$atom .= atom_entry($item,$type,null,$owner,true);
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$entry = ostatus_entry($doc, $item, $owner);
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dfrn_entry($entry, $doc, $xpath, $item, $owner);
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$root->appendChild($entry);
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}
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call_hooks('atom_feed_end', $atom);
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//$atom .= '</feed>' . "\r\n";
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//return $atom;
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return(trim($doc->saveXML()));
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}
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/**
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* @brief Adds the header elements for thr DFRN protocol
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*
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* We use the XML from OStatus as a base and are adding the DFRN parts to it.
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*
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* @root Class XML root element
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* @doc Class XML document
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* @xpath Class XML xpath
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* @owner array Owner record
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*
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*/
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function dfrn_add_header(&$root, $doc, $xpath, $owner) {
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$root->setAttribute("xmlns:at", "http://purl.org/atompub/tombstones/1.0");
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$root->setAttribute("xmlns:xmlns:dfrn", "http://purl.org/macgirvin/dfrn/1.0");
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$attributes = array("href" => "http://creativecommons.org/licenses/by/3.0/", "rel" => "license");
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xml_add_element($doc, $root, "link", "", $attributes);
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xml_replace_element($doc, $root, $xpath, "title", $owner["name"]);
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xml_remove_element($root, $xpath, "/atom:feed/subtitle");
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xml_remove_element($root, $xpath, "/atom:feed/logo");
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xml_remove_element($root, $xpath, "/atom:feed/author");
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$author = dfrn_add_author($doc, $owner);
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$root->appendChild($author);
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}
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function dfrn_add_author($doc, $owner) {
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$a = get_app();
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$author = $doc->createElement("author");
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$namdate = datetime_convert('UTC', 'UTC', $owner['name-date'].'+00:00' , ATOM_TIME);
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$uridate = datetime_convert('UTC', 'UTC', $owner['uri-date'].'+00:00', ATOM_TIME);
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$picdate = datetime_convert('UTC', 'UTC', $owner['avatar-date'].'+00:00', ATOM_TIME);
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$attributes = array("dfrn:updated" => $namdate);
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xml_add_element($doc, $author, "name", $owner["name"], $attributes);
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$attributes = array("dfrn:updated" => $namdate);
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xml_add_element($doc, $author, "uri", $a->get_baseurl().'/profile/'.$owner["nickname"], $attributes);
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$attributes = array("rel" => "photo", "type" => "image/jpeg", "dfrn:updated" => $picdate,
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"media:width" => 175, "media:height" => 175, "href" => $owner['photo']);
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xml_add_element($doc, $author, "link", "", $attributes);
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$attributes = array("rel" => "avatar", "type" => "image/jpeg", "dfrn:updated" => $picdate,
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"media:width" => 175, "media:height" => 175, "href" => $owner['photo']);
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xml_add_element($doc, $author, "link", "", $attributes);
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return $author;
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}
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function dfrn_entry($entry, $doc, $xpath, $item, $owner) {
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$a = get_app();
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$author = ostatus_add_author($doc, $owner);
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$entry->appendChild($author);
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}
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function xml_replace_element($doc, $parent, $xpath, $element, $value = "", $attributes = array()) {
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$old_element = $xpath->query("/atom:feed/".$element)->item(0);
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$element = $doc->createElement($element, xmlify($value));
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foreach ($attributes AS $key => $value) {
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$attribute = $doc->createAttribute($key);
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$attribute->value = xmlify($value);
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$element->appendChild($attribute);
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}
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$parent->replaceChild($element, $old_element);
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}
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function xml_remove_element($parent, $xpath, $element) {
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$old_element = $xpath->query($element)->item(0);
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$parent->removeChild($old_element);
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}
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