Diaspora: Support for new fetch functionality (replacement for /p/)

include/diaspora.php

@@ -2287,10 +2287,10 @@ class diaspora {
 		$sig = base64url_encode($signature);
 
 		$xmldata = array("diaspora" => array("header" => array("author_id" => $handle),
-						"me:env" => array("me:encoding" => "base64url",
+						"me:env" => array("me:encoding" => $encoding,
-								"me:alg" => "RSA-SHA256",
+								"me:alg" => $alg,
 								"me:data" => $data,
-								"@attributes" => array("type" => "application/xml"),
+								"@attributes" => array("type" => $type),
 								"me:sig" => $sig)));
 
 		$namespaces = array("" => "https://joindiaspora.com/protocol",
@@ -2377,10 +2377,10 @@ class diaspora {
 		$cipher_json = base64_encode($encrypted_header_json_object);
 
 		$xmldata = array("diaspora" => array("encrypted_header" => $cipher_json,
-						"me:env" => array("me:encoding" => "base64url",
+						"me:env" => array("me:encoding" => $encoding,
-								"me:alg" => "RSA-SHA256",
+								"me:alg" => $alg,
 								"me:data" => $data,
-								"@attributes" => array("type" => "application/xml"),
+								"@attributes" => array("type" => $type),
 								"me:sig" => $sig)));
 
 		$namespaces = array("" => "https://joindiaspora.com/protocol",

include/notifier.php

@@ -132,17 +132,24 @@ function notifier_run(&$argv, &$argc){
 		$recipients[] = $suggest[0]['cid'];
 		$item = $suggest[0];
 	} elseif($cmd === 'removeme') {
-		$r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($item_id));
+		$r = q("SELECT `contact`.*, `user`.`pubkey` AS `upubkey`, `user`.`prvkey` AS `uprvkey`,
+				`user`.`timezone`, `user`.`nickname`, `user`.`sprvkey`, `user`.`spubkey`,
+				`user`.`page-flags`, `user`.`prvnets`
+			FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
+				WHERE `contact`.`uid` = %d AND `contact`.`self` LIMIT 1",
+				intval($item_id));
 		if (!$r)
 			return;
 
 		$user = $r[0];
-		$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1", intval($item_id));
+
+		$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` LIMIT 1", intval($item_id));
 		if (!$r)
 			return;
 
 		$self = $r[0];
-		$r = q("SELECT * FROM `contact` WHERE `self` = 0 AND `uid` = %d", intval($item_id));
+
+		$r = q("SELECT * FROM `contact` WHERE NOT `self` AND `uid` = %d", intval($item_id));
 		if(!$r)
 			return;
 

include/xml.php

@@ -44,7 +44,7 @@ class xml {
 		}
 
 		foreach($array as $key => $value) {
-			if ($key == "@attributes") {
+			if (substr($key, 0, 11) == "@attributes") {
 				if (!isset($element) OR !is_array($value))
 					continue;
 

mod/fetch.php

@@ -0,0 +1,88 @@
+<?php
+/*
+This file is part of the Diaspora protocol. It is used for fetching single public posts.
+*/
+require_once("include/diaspora.php");
+
+function fetch_init($a){
+
+	if (($a->argc != 3) OR (!in_array($a->argv[1], array("post", "status_message", "reshare")))) {
+		header($_SERVER["SERVER_PROTOCOL"].' 404 '.t('Not Found'));
+		killme();
+	}
+
+	$guid = $a->argv[2];
+
+	$item = q("SELECT `uid`, `title`, `body`, `guid`, `contact-id`, `private`, `created`, `app`, `location`
+			FROM `item` WHERE `wall` AND NOT `private`  AND `guid` = '%s' AND `network` IN ('%s', '%s') AND `id` = `parent` LIMIT 1",
+		dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
+	if (!$item) {
+		header($_SERVER["SERVER_PROTOCOL"].' 404 '.t('Not Found'));
+		killme();
+	}
+	$post = array();
+
+	$reshared = diaspora::is_reshare($item[0]["body"]);
+
+	if ($reshared) {
+		$nodename = "reshare";
+		$post["root_diaspora_id"] = $reshared["root_handle"];
+		$post["root_guid"] = $reshared["root_guid"];
+		$post["guid"] = $item[0]["guid"];
+		$post["diaspora_handle"] = diaspora::handle_from_contact($item[0]["contact-id"]);
+		$post["public"] = (!$item[0]["private"] ? 'true':'false');
+		$post["created_at"] = datetime_convert('UTC','UTC',$item[0]["created"]);
+	} else {
+		$body = bb2diaspora($item[0]["body"]);
+
+		if(strlen($item[0]["title"]))
+			$body = "## ".html_entity_decode($item[0]["title"])."\n\n".$body;
+
+		$nodename = "status_message";
+		$post["raw_message"] = str_replace("&", "&amp;", $body);
+		$post["location"] = $item[0]["location"];
+		$post["guid"] = $item[0]["guid"];
+		$post["diaspora_handle"] = diaspora::handle_from_contact($item[0]["contact-id"]);
+		$post["public"] = (!$item[0]["private"] ? 'true':'false');
+		$post["created_at"] = datetime_convert('UTC','UTC',$item[0]["created"]);
+		$post["provider_display_name"] = $item[0]["app"];
+	}
+
+	$data = array("XML" => array("post" => array($nodename => $post)));
+	$xml = xml::from_array($data, $xmlobj);
+
+	$r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d", intval($item[0]["uid"]));
+	if (!$r) {
+		header($_SERVER["SERVER_PROTOCOL"].' 404 '.t('Not Found'));
+		killme();
+	}
+
+	$user = $r[0];
+
+	$key_id = "";
+
+	$b64url_data = base64url_encode($xml);
+	$data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
+
+	$type = "application/xml";
+	$encoding = "base64url";
+	$alg = "RSA-SHA256";
+	$signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
+	$signature = rsa_sign($signable_data, $user["prvkey"]);
+	$sig = base64url_encode($signature);
+
+	$xmldata = array("me:env" => array("me:data" => $data,
+							"@attributes" => array("type" => $type),
+							"me:encoding" => $encoding,
+							"me:alg" => $alg,
+							"me:sig" => $sig,
+							"@attributes2" => array("key_id" => $key_id)));
+
+	$namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
+
+	$envelope = xml::from_array($xmldata, $xml, false, $namespaces);
+	header("Content-Type: application/xml; charset=utf-8");
+	echo $envelope;
+
+	killme();
+}