mirror of https://github.com/friendica/friendica
90 lines
3.0 KiB
PHP
90 lines
3.0 KiB
PHP
<?php
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/*
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This file is part of the Diaspora protocol. It is used for fetching single public posts.
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*/
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require_once("include/crypto.php");
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require_once("include/diaspora.php");
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require_once("include/xml.php");
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function fetch_init($a){
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if (($a->argc != 3) OR (!in_array($a->argv[1], array("post", "status_message", "reshare")))) {
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header($_SERVER["SERVER_PROTOCOL"].' 404 '.t('Not Found'));
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killme();
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}
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$guid = $a->argv[2];
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$item = q("SELECT `uid`, `title`, `body`, `guid`, `contact-id`, `private`, `created`, `app`, `location`
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FROM `item` WHERE `wall` AND NOT `private` AND `guid` = '%s' AND `network` IN ('%s', '%s') AND `id` = `parent` LIMIT 1",
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dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
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if (!$item) {
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header($_SERVER["SERVER_PROTOCOL"].' 404 '.t('Not Found'));
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killme();
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}
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$post = array();
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$reshared = diaspora::is_reshare($item[0]["body"]);
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if ($reshared) {
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$nodename = "reshare";
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$post["root_diaspora_id"] = $reshared["root_handle"];
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$post["root_guid"] = $reshared["root_guid"];
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$post["guid"] = $item[0]["guid"];
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$post["diaspora_handle"] = diaspora::handle_from_contact($item[0]["contact-id"]);
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$post["public"] = (!$item[0]["private"] ? 'true':'false');
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$post["created_at"] = datetime_convert('UTC','UTC',$item[0]["created"]);
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} else {
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$body = bb2diaspora($item[0]["body"]);
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if(strlen($item[0]["title"]))
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$body = "## ".html_entity_decode($item[0]["title"])."\n\n".$body;
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$nodename = "status_message";
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$post["raw_message"] = str_replace("&", "&", $body);
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$post["location"] = $item[0]["location"];
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$post["guid"] = $item[0]["guid"];
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$post["diaspora_handle"] = diaspora::handle_from_contact($item[0]["contact-id"]);
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$post["public"] = (!$item[0]["private"] ? 'true':'false');
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$post["created_at"] = datetime_convert('UTC','UTC',$item[0]["created"]);
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$post["provider_display_name"] = $item[0]["app"];
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}
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$data = array("XML" => array("post" => array($nodename => $post)));
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$xml = xml::from_array($data, $xmlobj);
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$r = q("SELECT `guid`, `prvkey` FROM `user` WHERE `uid` = %d", intval($item[0]["uid"]));
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if (!$r) {
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header($_SERVER["SERVER_PROTOCOL"].' 404 '.t('Not Found'));
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killme();
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}
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$user = $r[0];
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$b64url_data = base64url_encode($xml);
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$data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
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$key_id = base64url_encode($user["guid"]);
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$type = "application/xml";
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$encoding = "base64url";
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$alg = "RSA-SHA256";
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$signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
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$signature = rsa_sign($signable_data, $user["prvkey"]);
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$sig = base64url_encode($signature);
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$xmldata = array("me:env" => array("me:data" => $data,
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"@attributes" => array("type" => $type),
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"me:encoding" => $encoding,
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"me:alg" => $alg,
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"me:sig" => $sig,
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"@attributes2" => array("key_id" => $key_id)));
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$namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
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$envelope = xml::from_array($xmldata, $xml, false, $namespaces);
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header("Content-Type: application/xml; charset=utf-8");
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echo $envelope;
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killme();
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}
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