From 3457f8583307367f6308e938eca0c09720387133 Mon Sep 17 00:00:00 2001
From: Michael Vogel <icarus@dabo.de>
Date: Mon, 13 Jul 2015 14:34:28 +0200
Subject: [PATCH] Salmon: Don't store contact data before the message was
 authenticated.

---
 include/ostatus.php | 14 ++++++++------
 mod/salmon.php      | 31 ++++++++-----------------------
 2 files changed, 16 insertions(+), 29 deletions(-)

diff --git a/include/ostatus.php b/include/ostatus.php
index 7b657577a..901ae95f7 100644
--- a/include/ostatus.php
+++ b/include/ostatus.php
@@ -12,7 +12,7 @@ define('OSTATUS_DEFAULT_POLL_INTERVAL', 30); // given in minutes
 define('OSTATUS_DEFAULT_POLL_TIMEFRAME', 1440); // given in minutes
 define('OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS', 14400); // given in minutes
 
-function ostatus_fetchauthor($xpath, $context, $importer, &$contact) {
+function ostatus_fetchauthor($xpath, $context, $importer, &$contact, $onlyfetch) {
 
 	$author = array();
 	$author["author-link"] = $xpath->evaluate('atom:author/atom:uri/text()', $context)->item(0)->nodeValue;
@@ -63,7 +63,7 @@ function ostatus_fetchauthor($xpath, $context, $importer, &$contact) {
 	$author["owner-link"] = $author["author-link"];
 	$author["owner-avatar"] = $author["author-avatar"];
 
-	if ($r) {
+	if ($r AND !$onlyfetch) {
 		// Update contact data
 		$update_contact = ($r[0]['name-date'] < datetime_convert('','','now -12 hours'));
 		if ($update_contact) {
@@ -132,7 +132,7 @@ function ostatus_salmon_author($xml, $importer) {
 
 	foreach ($entries AS $entry) {
 		// fetch the author
-		$author = ostatus_fetchauthor($xpath, $entry, $importer, $contact);
+		$author = ostatus_fetchauthor($xpath, $entry, $importer, $contact, true);
 		return $author;
 	}
 }
@@ -201,9 +201,9 @@ function ostatus_import($xml,$importer,&$contact, &$hub) {
 
 		// fetch the author
 		if ($first_child == "feed")
-			$author = ostatus_fetchauthor($xpath, $doc->firstChild, $importer, $contact);
+			$author = ostatus_fetchauthor($xpath, $doc->firstChild, $importer, $contact, false);
 		else
-			$author = ostatus_fetchauthor($xpath, $entry, $importer, $contact);
+			$author = ostatus_fetchauthor($xpath, $entry, $importer, $contact, false);
 
 		$item = array_merge($header, $author);
 
@@ -243,11 +243,13 @@ function ostatus_import($xml,$importer,&$contact, &$hub) {
 
 		if ($item["verb"] == ACTIVITY_FOLLOW) {
 			// ignore "Follow" messages
+			// new_follower($importer,$contact,$datarray,$item);
 			continue;
 		}
 
 		if ($item["verb"] == NAMESPACE_OSTATUS."/unfollow") {
 			// ignore "Unfollow" messages
+			// lose_follower($importer,$contact,$datarray,$item);
 			continue;
 		}
 
@@ -399,7 +401,7 @@ function ostatus_import($xml,$importer,&$contact, &$hub) {
 				$orig_created = $xpath->query('atom:published/text()', $activityobjects)->item(0)->nodeValue;
 
 				$orig_contact = $contact;
-				$orig_author = ostatus_fetchauthor($xpath, $activityobjects, $importer, $orig_contact);
+				$orig_author = ostatus_fetchauthor($xpath, $activityobjects, $importer, $orig_contact, false);
 
 				//if (!intval(get_config('system','wall-to-wall_share'))) {
 				//	$prefix = share_header($orig_author['author-name'], $orig_author['author-link'], $orig_author['author-avatar'], "", $orig_created, $orig_link);
diff --git a/mod/salmon.php b/mod/salmon.php
index f04a2e228..9c22e42d1 100644
--- a/mod/salmon.php
+++ b/mod/salmon.php
@@ -1,12 +1,10 @@
 <?php
 
-
-// There is a lot of debug stuff in here because this is quite a
-// complicated process to try and sort out.
-
 require_once('include/salmon.php');
 require_once('include/ostatus.php');
 require_once('include/crypto.php');
+require_once('include/items.php');
+require_once('include/follow.php');
 
 function salmon_return($val) {
 
@@ -96,8 +94,7 @@ function salmon_post(&$a) {
 
 	// Once we have the author URI, go to the web and try to find their public key
 
-	logger('mod-salmon: Fetching key for ' . $author_link );
-
+	logger('mod-salmon: Fetching key for ' . $author_link);
 
 	$key = get_salmon_key($author_link,$keyhash);
 
@@ -156,10 +153,9 @@ function salmon_post(&$a) {
 	if(! count($r)) {
 		logger('mod-salmon: Author unknown to us.');
 		if(get_pconfig($importer['uid'],'system','ostatus_autofriend')) {
-			require_once('include/follow.php');
 			$result = new_contact($importer['uid'],$author_link);
 			if($result['success']) {
-				$r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND ( `url` = '%s' OR `alias` = '%s' ) 
+				$r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND ( `url` = '%s' OR `alias` = '%s') 
 					AND `uid` = %d LIMIT 1",
 					dbesc(NETWORK_OSTATUS),
 					dbesc($author_link),
@@ -170,32 +166,21 @@ function salmon_post(&$a) {
 		}
 	}
 
-	// is this a follower? Or have we ignored the person?
+	// Have we ignored the person?
 	// If so we can not accept this post.
 
-	if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
+	//if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
+	if(count($r) && $r[0]['blocked']) {
 		logger('mod-salmon: Ignoring this author.');
 		http_status_exit(202);
 		// NOTREACHED
 	}
 
-	require_once('include/items.php');
-
-	// Placeholder for hub discovery. We shouldn't find any hubs
-	// since we supplied the fake feed header - and it doesn't have any.
-
+	// Placeholder for hub discovery.
 	$hub = '';
 
-	/**
-	 *
-	 * anti-spam measure: consume_feed will accept a follow activity from 
-	 * this person (and nothing else) if there is no existing contact record.
-	 *
-	 */
-
 	$contact_rec = ((count($r)) ? $r[0] : null);
 
-	//consume_feed($feedxml,$importer,$contact_rec,$hub);
 	ostatus_import($data,$importer,$contact_rec, $hub);
 
 	http_status_exit(200);