From bba8f03296d02225672a548f1aacfe8eac7e27d2 Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Thu, 19 Dec 2019 07:47:35 -0500
Subject: [PATCH 1/2] Check for parent existence in mod/display

- Addresses https://github.com/friendica/friendica/issues/7677#issuecomment-566079001
---
 mod/display.php | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/mod/display.php b/mod/display.php
index ba339b9185..b388b915e1 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -93,7 +93,8 @@ function display_init(App $a)
 	}
 
 	if ($item["id"] != $item["parent"]) {
-		$item = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
+		$parent = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
+		$item = $parent ?: $item;
 	}
 
 	$profiledata = display_fetchauthor($a, $item);
@@ -242,16 +243,20 @@ function display_content(App $a, $update = false, $update_uid = 0)
 	$is_remote_contact = false;
 	$item_uid = local_user();
 
-	if (isset($item_parent_uri)) {
+	$parent = null;
+	if (!empty($item_parent_uri)) {
 		$parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
-		if (DBA::isResult($parent)) {
-			$a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
-			$a->profile['profile_uid'] = ($a->profile['profile_uid'] ?? 0) ?: $parent['uid'];
-			$is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
-			if ($is_remote_contact) {
-				$item_uid = $parent['uid'];
-			}
+	}
+
+	if (DBA::isResult($parent)) {
+		$a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
+		$a->profile['profile_uid'] = ($a->profile['profile_uid'] ?? 0) ?: $parent['uid'];
+		$is_remote_contact = Session::getRemoteContactID($a->profile['profile_uid']);
+		if ($is_remote_contact) {
+			$item_uid = $parent['uid'];
 		}
+	} else {
+		$a->profile = ['uid' => intval($item['uid']), 'profile_uid' => intval($item['uid'])];
 	}
 
 	$page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);

From 33ea5dfe3567c39a78cd18e638fc746a19992c68 Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Thu, 19 Dec 2019 07:48:08 -0500
Subject: [PATCH 2/2] Add check for $_REQUEST key existence in
 Module\Item\Compose

- Addresses https://github.com/friendica/friendica/issues/7677#issuecomment-566254464
---
 src/Module/Item/Compose.php | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/Module/Item/Compose.php b/src/Module/Item/Compose.php
index db44ee3d14..b9cda4863e 100644
--- a/src/Module/Item/Compose.php
+++ b/src/Module/Item/Compose.php
@@ -85,15 +85,20 @@ class Compose extends BaseModule
 				$type = 'post';
 				$doesFederate = true;
 
-				if ($_REQUEST['contact_allow']
-					. $_REQUEST['group_allow']
-					. $_REQUEST['contact_deny']
-				    . $_REQUEST['group_deny'])
+				$contact_allow = $_REQUEST['contact_allow'] ?? '';
+				$group_allow = $_REQUEST['group_allow'] ?? '';
+				$contact_deny = $_REQUEST['contact_deny'] ?? '';
+				$group_deny = $_REQUEST['group_deny'] ?? '';
+
+				if ($contact_allow
+					. $group_allow
+					. $contact_deny
+				    . $group_deny)
 				{
-					$contact_allow_list = $_REQUEST['contact_allow'] ? explode(',', $_REQUEST['contact_allow']) : [];
-					$group_allow_list   = $_REQUEST['group_allow']   ? explode(',', $_REQUEST['group_allow'])   : [];
-					$contact_deny_list  = $_REQUEST['contact_deny']  ? explode(',', $_REQUEST['contact_deny'])  : [];
-					$group_deny_list    = $_REQUEST['group_deny']    ? explode(',', $_REQUEST['group_deny'])    : [];
+					$contact_allow_list = $contact_allow ? explode(',', $contact_allow) : [];
+					$group_allow_list   = $group_allow   ? explode(',', $group_allow)   : [];
+					$contact_deny_list  = $contact_deny  ? explode(',', $contact_deny)  : [];
+					$group_deny_list    = $group_deny    ? explode(',', $group_deny)    : [];
 				}
 
 				break;