From 10167fdf515e69c4645da9b0a020d0594c7a55a3 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Mon, 7 Apr 2014 02:55:00 -0700
Subject: prevent follows of and notifications to deceased channels

---
 include/enotify.php | 5 +++--
 include/follow.php  | 6 ++++++
 include/zot.php     | 9 +++++++++
 3 files changed, 18 insertions(+), 2 deletions(-)

(limited to 'include')

diff --git a/include/enotify.php b/include/enotify.php
index 5be21f180..7ab4fe5ed 100644
--- a/include/enotify.php
+++ b/include/enotify.php
@@ -18,8 +18,9 @@ function notification($params) {
 	}
 	if($params['to_xchan']) {
 		$y = q("select channel.*, account.* from channel left join account on channel_account_id = account_id
-			where channel_hash = '%s' limit 1",
-			dbesc($params['to_xchan'])
+			where channel_hash = '%s' and not (channel_pageflags & %d) limit 1",
+			dbesc($params['to_xchan']),
+			intval(PAGE_REMOVED)
 		);
 	}
 	if($x & $y) {
diff --git a/include/follow.php b/include/follow.php
index 0508a8b37..d98a58198 100644
--- a/include/follow.php
+++ b/include/follow.php
@@ -75,11 +75,17 @@ function new_contact($uid,$url,$channel,$interactive = false, $confirm = false)
 			return $result;
 		}
 
+
 		// do we have an xchan and hubloc?
 		// If not, create them.	
 
 		$x = import_xchan($j);
 
+		if(array_key_exists('deleted',$j) && intval($j['deleted'])) {
+			$result['message'] = t('Channel was deleted and no longer exists.');
+			return $result;
+		}
+
 		if(! $x['success']) 
 			return $x;
 
diff --git a/include/zot.php b/include/zot.php
index 48240d5aa..45df09661 100644
--- a/include/zot.php
+++ b/include/zot.php
@@ -632,6 +632,13 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED) {
 		if($adult_changed)
 			$new_flags = $new_flags ^ XCHAN_FLAGS_SELFCENSORED;
 
+		$deleted = (($r[0]['xchan_flags'] & XCHAN_FLAGS_DELETED) ? true : false);
+		$deleted_changed =  ((intval($deleted) != intval($arr['deleted'])) ? true : false);
+		if($deleted_changed)
+			$new_flags = $new_flags ^ XCHAN_FLAGS_DELETED;
+
+
+
 
 		if(($r[0]['xchan_name_date'] != $arr['name_updated']) 
 			|| ($r[0]['xchan_connurl'] != $arr['connections_url']) 
@@ -676,6 +683,8 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED) {
 			$new_flags = 0;
 		if($arr['adult_content'])
 			$new_flags |= XCHAN_FLAGS_SELFCENSORED;
+		if($arr['deleted'])
+			$new_flags |= XCHAN_FLAGS_DELETED;
 		
 		$x = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_mimetype,
 				xchan_photo_l, xchan_addr, xchan_url, xchan_connurl, xchan_follow, xchan_connpage, xchan_name, xchan_network, xchan_photo_date, xchan_name_date, xchan_flags)
-- 
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