Retraction do work as well

database.sql

@@ -901,13 +901,11 @@ CREATE TABLE IF NOT EXISTS `session` (
 CREATE TABLE IF NOT EXISTS `sign` (
 	`id` int(10) unsigned NOT NULL auto_increment,
 	`iid` int(10) unsigned NOT NULL DEFAULT 0,
-	`retract_iid` int(10) unsigned NOT NULL DEFAULT 0,
 	`signed_text` mediumtext NOT NULL,
 	`signature` text NOT NULL,
 	`signer` varchar(255) NOT NULL DEFAULT '',
 	 PRIMARY KEY(`id`),
-	 INDEX `iid` (`iid`),
-	 INDEX `retract_iid` (`retract_iid`)
+	 INDEX `iid` (`iid`)
 ) DEFAULT CHARSET=utf8;
 
 --

doc/database/db_sign.md

@@ -5,7 +5,6 @@ Table sign
 | ------------ | ------------- | ---------------- | ---- | --- | ------- | --------------- |
 | id           | sequential ID | int(10) unsigned | NO   | PRI | NULL    | auto_increment  |
 | iid          | item.id       | int(10) unsigned | NO   | MUL | 0       |                 |
-| retract_iid  |               | int(10) unsigned | NO   | MUL | 0       |                 |
 | signed_text  |               | mediumtext       | NO   |     | NULL    |                 |
 | signature    |               | text             | NO   |     | NULL    |                 |
 | signer       |               | varchar(255)     | NO   |     |         |                 |

include/dbstructure.php

@@ -1235,7 +1235,6 @@ function db_definition() {
 			"fields" => array(
 					"id" => array("type" => "int(10) unsigned", "not null" => "1", "extra" => "auto_increment", "primary" => "1"),
 					"iid" => array("type" => "int(10) unsigned", "not null" => "1", "default" => "0"),
-					"retract_iid" => array("type" => "int(10) unsigned", "not null" => "1", "default" => "0"),
 					"signed_text" => array("type" => "mediumtext", "not null" => "1"),
 					"signature" => array("type" => "text", "not null" => "1"),
 					"signer" => array("type" => "varchar(255)", "not null" => "1", "default" => ""),
@@ -1243,7 +1242,6 @@ function db_definition() {
 			"indexes" => array(
 					"PRIMARY" => array("id"),
 					"iid" => array("iid"),
-					"retract_iid" => array("retract_iid"),
 					)
 			);
 	$database["spam"] = array(

include/diaspora.php

@@ -12,8 +12,8 @@
  * - send mail
  * - send status retraction
  * - send comment retraction on own post
- * - send comment retraction on diaspora post
  * - send like retraction on own post
+ * - send comment retraction on diaspora post
  * - send like retraction on diaspora post
  * - receive status
  * - receive reshare
@@ -30,10 +30,10 @@
  * - relay comment retraction from friendica
  * - relay like retraction from diaspora
  * - relay like retraction from friendica
+ * - send share
  *
  * Should work:
  * - receive account deletion
- * - send share
  * - send unshare
  *
  * Unchecked:
@@ -610,15 +610,21 @@ class diaspora {
 		return $r;
 	}
 
-	public static function handle_from_contact($contact_id) {
+	public static function handle_from_contact($contact_id, $gcontact_id = 0) {
 		$handle = False;
 
-		logger("contact id is ".$contact_id, LOGGER_DEBUG);
+		logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
+
+		if ($gcontact_id != 0) {
+			$r = q("SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
+				intval($gcontact_id));
+			if ($r)
+				return $r[0]["addr"];
+		}
 
 		$r = q("SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
-		       intval($contact_id)
-		);
-		if($r) {
+			intval($contact_id));
+		if ($r) {
 			$contact = $r[0];
 
 			logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
@@ -1759,16 +1765,6 @@ class diaspora {
 
 		// Now check if the retraction needs to be relayed by us
 		if($p[0]["origin"]) {
-
-			// Formerly we stored the signed text, the signature and the author in different fields.
-			// We now store the raw data so that we are more flexible.
-			q("INSERT INTO `sign` (`retract_iid`,`signed_text`) VALUES (%d,'%s')",
-				intval($r[0]["id"]),
-				dbesc(json_encode($data))
-			);
-			$s = q("select * from sign where retract_iid = %d", intval($r[0]["id"]));
-			logger("Stored signatur for item ".$r[0]["id"]." - ".print_r($s, true), LOGGER_DEBUG);
-
 			// notify others
 			proc_run("php", "include/notifier.php", "drop", $r[0]["id"]);
 		}
@@ -2380,28 +2376,21 @@ class diaspora {
 
 	public static function send_relay($item, $owner, $contact, $public_batch = false) {
 
-		if ($item["deleted"]) {
-			$sql_sign_id = "retract_iid";
-			$type = "relayable_retraction";
-		} elseif ($item['verb'] === ACTIVITY_LIKE) {
-			$sql_sign_id = "iid";
+		if ($item["deleted"])
+			return self::send_retraction($item, $owner, $contact, $public_batch, true);
+		elseif ($item['verb'] === ACTIVITY_LIKE)
 			$type = "like";
-		} else {
-			$sql_sign_id = "iid";
+		else
 			$type = "comment";
-		}
 
 		logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
 
 		// fetch the original signature
 
-		$r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `".$sql_sign_id."` = %d LIMIT 1",
+		$r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
 			intval($item["id"]));
 
 		if (!$r) {
-			if ($item["deleted"])
-				return self::send_retraction($item, $owner, $contact, $public_batch);
-
 			logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
 			return false;
 		}
@@ -2431,23 +2420,17 @@ class diaspora {
 				logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
 		}
 
-		if ($item["deleted"]) {
-			$signed_text = $message["target_guid"].';'.$message["target_type"];
-			$message["parent_author_signature"] = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
-		} else
-			$message["parent_author_signature"] = self::signature($owner, $message);
+		$message["parent_author_signature"] = self::signature($owner, $message);
 
 		logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
 
 		return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
 	}
 
-	public static function send_retraction($item, $owner, $contact, $public_batch = false) {
-
-		/// @todo Fetch handle from every contact (via gcontact)
-		$itemaddr = self::handle_from_contact($item["contact-id"]);
+	public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
 
-		$myaddr = self::my_handle($owner);
+		$itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
+		//$myaddr = self::my_handle($owner);
 
 		// Check whether the retraction is for a top-level post or whether it's a relayable
 		if ($item["uri"] !== $item["parent-uri"]) {
@@ -2458,17 +2441,17 @@ class diaspora {
 			$target_type = "StatusMessage";
 		}
 
+		if ($relay AND ($item["uri"] !== $item["parent-uri"]))
+			$signature = "parent_author_signature";
+		else
+			$signature = "target_author_signature";
+
 		$signed_text = $item["guid"].";".$target_type;
 
 		$message = array("target_guid" => $item['guid'],
 				"target_type" => $target_type,
 				"sender_handle" => $itemaddr,
-				"target_author_signature" => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
-
-		if ($itemaddr != $myaddr) {
-			$message["parent_author_signature"] = $message["target_author_signature"];
-			unset($message["target_author_signature"]);
-		}
+				$signature => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
 
 		logger("Got message ".print_r($message, true), LOGGER_DEBUG);
 

include/items.php

@@ -1980,9 +1980,6 @@ function drop_item($id,$interactive = true) {
 					intval($r[0]['id'])
 				);
 			}
-
-			// Add a relayable_retraction signature for Diaspora.
-			store_diaspora_retract_sig($item, $a->user, $a->get_baseurl());
 		}
 
 		$drop_id = intval($item['id']);
@@ -2115,51 +2112,3 @@ function posted_date_widget($url,$uid,$wall) {
 	));
 	return $o;
 }
-
-function store_diaspora_retract_sig($item, $user, $baseurl) {
-	// Note that we can't add a target_author_signature
-	// if the comment was deleted by a remote user. That should be ok, because if a remote user is deleting
-	// the comment, that means we're the home of the post, and Diaspora will only
-	// check the parent_author_signature of retractions that it doesn't have to relay further
-	//
-	// I don't think this function gets called for an "unlike," but I'll check anyway
-
-	$enabled = intval(get_config('system','diaspora_enabled'));
-	if(! $enabled) {
-		logger('drop_item: diaspora support disabled, not storing retraction signature', LOGGER_DEBUG);
-		return;
-	}
-
-	logger('drop_item: storing diaspora retraction signature');
-
-	$signed_text = $item['guid'] . ';' . ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
-
-	if(local_user() == $item['uid']) {
-
-		$handle = $user['nickname'] . '@' . substr($baseurl, strpos($baseurl,'://') + 3);
-		$authorsig = base64_encode(rsa_sign($signed_text,$user['prvkey'],'sha256'));
-	}
-	else {
-		$r = q("SELECT `nick`, `url` FROM `contact` WHERE `id` = '%d' LIMIT 1",
-			$item['contact-id'] // If this function gets called, drop_item() has already checked remote_user() == $item['contact-id']
-		);
-		if(count($r)) {
-			// The below handle only works for NETWORK_DFRN. I think that's ok, because this function
-			// only handles DFRN deletes
-			$handle_baseurl_start = strpos($r['url'],'://') + 3;
-			$handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
-			$handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
-			$authorsig = '';
-		}
-	}
-
-	if(isset($handle))
-		q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
-			intval($item['id']),
-			dbesc($signed_text),
-			dbesc($authorsig),
-			dbesc($handle)
-		);
-
-	return;
-}

include/like.php

@@ -151,9 +151,6 @@ function do_like($item_id, $verb) {
 			intval($like_item['id'])
 		);
 
-		// Save the author information for the unlike in case we need to relay to Diaspora
-		store_diaspora_like_retract_sig($activity, $item, $like_item, $contact);
-
 		$like_item_id = $like_item['id'];
 		proc_run('php',"include/notifier.php","like","$like_item_id");
 
@@ -251,72 +248,6 @@ EOT;
 	return true;
 }
 
-
-
-function store_diaspora_like_retract_sig($activity, $item, $like_item, $contact) {
-	// Note that we can only create a signature for a user of the local server. We don't have
-	// a key for remote users. That is ok, because if a remote user is "unlike"ing a post, it
-	// means we are the relay, and for relayable_retractions, Diaspora
-	// only checks the parent_author_signature if it doesn't have to relay further
-	//
-	// If $item['resource-id'] exists, it means the item is a photo. Diaspora doesn't support
-	// likes on photos, so don't bother.
-
-	$enabled = intval(get_config('system','diaspora_enabled'));
-	if(! $enabled) {
-		logger('mod_like: diaspora support disabled, not storing like retraction signature', LOGGER_DEBUG);
-		return;
-	}
-
-	logger('mod_like: storing diaspora like retraction signature');
-
-	if(($activity === ACTIVITY_LIKE) && (! $item['resource-id'])) {
-		$signed_text = $like_item['guid'] . ';' . 'Like';
-
-		// Only works for NETWORK_DFRN
-		$contact_baseurl_start = strpos($contact['url'],'://') + 3;
-		$contact_baseurl_length = strpos($contact['url'],'/profile') - $contact_baseurl_start;
-		$contact_baseurl = substr($contact['url'], $contact_baseurl_start, $contact_baseurl_length);
-		$diaspora_handle = $contact['nick'] . '@' . $contact_baseurl;
-
-		// This code could never had worked (the return values form the queries were used in a wrong way.
-		// Additionally it is needlessly complicated. Either the contact is owner or not. And we have this data already.
-/*
-		// Get contact's private key if he's a user of the local Friendica server
-		$r = q("SELECT `contact`.`uid` FROM `contact` WHERE `url` = '%s' AND `self` = 1 LIMIT 1",
-			dbesc($contact['url'])
-		);
-
-		if( $r) {
-			$contact_uid = $r['uid'];
-			$r = q("SELECT prvkey FROM user WHERE uid = %d LIMIT 1",
-				intval($contact_uid)
-			);
-*/
-		// Is the contact the owner? Then fetch the private key
-		if ($contact['self'] AND ($contact['uid'] > 0)) {
-			$r = q("SELECT prvkey FROM user WHERE uid = %d LIMIT 1",
-				intval($contact['uid'])
-			);
-
-			if($r)
-				$authorsig = base64_encode(rsa_sign($signed_text,$r[0]['prvkey'],'sha256'));
-		}
-
-		if(! isset($authorsig))
-			$authorsig = '';
-
-		q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
-			intval($like_item['id']),
-			dbesc($signed_text),
-			dbesc($authorsig),
-			dbesc($diaspora_handle)
-		);
-	}
-
-	return;
-}
-
 function store_diaspora_like_sig($activity, $post_type, $contact, $post_id) {
 	// Note that we can only create a signature for a user of the local server. We don't have
 	// a key for remote users. That is ok, because if a remote user is "unlike"ing a post, it

include/notifier.php

@@ -628,13 +628,6 @@ function notifier_run(&$argv, &$argc){
 		proc_run('php','include/pubsubpublish.php');
 	}
 
-	// If the item was deleted, clean up the `sign` table
-	/* if($target_item['deleted']) {
-		$r = q("DELETE FROM sign where `retract_iid` = %d",
-			intval($target_item['id'])
-		);
-	} */
-
 	logger('notifier: calling hooks', LOGGER_DEBUG);
 
 	if($normal_mode)