8 files changed, 58 insertions, 3 deletions
diff --git a/phpBB/includes/acp/acp_board.php b/phpBB/includes/acp/acp_board.php
index 05871e4157..2441a37edc 100644
--- a/phpBB/includes/acp/acp_board.php
+++ b/phpBB/includes/acp/acp_board.php
@@ -101,6 +101,7 @@ class acp_board
 						'allow_bookmarks'				=> array('lang' => 'ALLOW_BOOKMARKS',				'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'allow_birthdays'				=> array('lang' => 'ALLOW_BIRTHDAYS',				'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'display_last_subject'			=> array('lang' => 'DISPLAY_LAST_SUBJECT',			'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
+						'display_unapproved_posts'		=> array('lang' => 'DISPLAY_UNAPPROVED_POSTS',		'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'allow_quick_reply'				=> array('lang' => 'ALLOW_QUICK_REPLY',				'validate' => 'bool',	'type' => 'custom', 'method' => 'quick_reply', 'explain' => true),
 
 						'legend2'							=> 'ACP_SUBMIT_CHANGES',
diff --git a/phpBB/language/en/acp/board.php b/phpBB/language/en/acp/board.php
index fdc02d9ae8..cb9013805d 100644
--- a/phpBB/language/en/acp/board.php
+++ b/phpBB/language/en/acp/board.php
@@ -52,6 +52,8 @@ $lang = array_merge($lang, array(
 	'DISABLE_BOARD_EXPLAIN'			=> 'This will make the board unavailable to users who are neither administrators nor moderators. You can also enter a short (255 character) message to display if you wish.',
 	'DISPLAY_LAST_SUBJECT'			=> 'Display subject of last added post on forum list',
 	'DISPLAY_LAST_SUBJECT_EXPLAIN'	=> 'The subject of the last added post will be displayed in the forum list with a hyperlink to the post. Subjects from password protected forums and forums in which user doesn’t have read access are not shown.',
+	'DISPLAY_UNAPPROVED_POSTS'		=> 'Display unapproved posts to the author',
+	'DISPLAY_UNAPPROVED_POSTS_EXPLAIN'	=> 'Unapproved posts can be viewed by the author. Does not apply to Guest posts.',
 	'GUEST_STYLE'					=> 'Guest style',
 	'GUEST_STYLE_EXPLAIN'			=> 'The board style for guests.',
 	'OVERRIDE_STYLE'				=> 'Override user style',
diff --git a/phpBB/language/en/common.php b/phpBB/language/en/common.php
index 8190bad83c..609ae4fe53 100644
--- a/phpBB/language/en/common.php
+++ b/phpBB/language/en/common.php
@@ -616,6 +616,7 @@ $lang = array_merge($lang, array(
 	'POST_TOPIC'			=> 'Post a new topic',
 	'POST_UNAPPROVED_ACTION'	=> 'Post awaiting approval:',
 	'POST_UNAPPROVED'		=> 'This post has not been approved.',
+	'POST_UNAPPROVED_EXPLAIN'	=> 'This post is not visible to other users until it has been approved by a moderator.',
 	'POWERED_BY'			=> 'Powered by %s',
 	'PREVIEW'				=> 'Preview',
 	'PREVIOUS'				=> 'Previous',		// Used in pagination
diff --git a/phpBB/phpbb/content_visibility.php b/phpBB/phpbb/content_visibility.php
index 704ec6badb..fbc56f3db2 100644
--- a/phpBB/phpbb/content_visibility.php
+++ b/phpBB/phpbb/content_visibility.php
@@ -144,7 +144,14 @@ class content_visibility
 	*/
 	public function is_visible($mode, $forum_id, $data)
 	{
-		$is_visible = $this->auth->acl_get('m_approve', $forum_id) || $data[$mode . '_visibility'] == ITEM_APPROVED;
+		$visibility = $data[$mode . '_visibility'];
+		$poster_key = ($mode === 'topic') ? 'topic_poster' : 'poster_id';
+		$is_visible = ($visibility == ITEM_APPROVED) ||
+			($this->config['display_unapproved_posts'] &&
+				($this->user->data['user_id'] != ANONYMOUS) &&
+				($visibility == ITEM_UNAPPROVED || $visibility == ITEM_REAPPROVE) &&
+				($this->user->data['user_id'] == $data[$poster_key])) ||
+			 $this->auth->acl_get('m_approve', $forum_id);
 
 		/**
 		* Allow changing the result of calling is_visible
@@ -216,9 +223,16 @@ class content_visibility
 		}
 		else
 		{
-			$where_sql .= $table_alias . $mode . '_visibility = ' . ITEM_APPROVED;
-		}
+			$visibility_query = $table_alias . $mode . '_visibility = ';
 
+			$where_sql .= '(' . $visibility_query . ITEM_APPROVED . ')';
+			if ($this->config['display_unapproved_posts'] && ($this->user->data['user_id'] != ANONYMOUS))
+			{
+				$poster_key = ($mode === 'topic') ? 'topic_poster' : 'poster_id';
+				$where_sql .= ' OR ((' . $visibility_query . ITEM_UNAPPROVED . ' OR ' . $visibility_query . ITEM_REAPPROVE .')';
+				$where_sql .= ' AND ' . $table_alias . $poster_key . ' = ' . ((int) $this->user->data['user_id']) . ')';
+			}
+		}
 		return '(' . $where_sql . ')';
 	}
 
diff --git a/phpBB/phpbb/db/migration/data/v330/add_display_unapproved_posts_config.php b/phpBB/phpbb/db/migration/data/v330/add_display_unapproved_posts_config.php
new file mode 100644
index 0000000000..b429270827
--- /dev/null
+++ b/phpBB/phpbb/db/migration/data/v330/add_display_unapproved_posts_config.php
@@ -0,0 +1,24 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\db\migration\data\v330;
+
+class add_display_unapproved_posts_config extends \phpbb\db\migration\migration
+{
+	public function update_data()
+	{
+		return [
+			['config.add', ['display_unapproved_posts', 1]],
+		];
+	}
+}
diff --git a/phpBB/styles/prosilver/template/viewtopic_body.html b/phpBB/styles/prosilver/template/viewtopic_body.html
index 9bfa07e52b..6af33f2f87 100644
--- a/phpBB/styles/prosilver/template/viewtopic_body.html
+++ b/phpBB/styles/prosilver/template/viewtopic_body.html
@@ -294,6 +294,7 @@
 			<!-- EVENT viewtopic_body_postrow_post_details_after -->
 
 			<!-- IF postrow.S_POST_UNAPPROVED -->
+			<!-- IF postrow.S_CAN_APPROVE -->
 			<form method="post" class="mcp_approve" action="{postrow.U_APPROVE_ACTION}">
 				<p class="post-notice unapproved">
 					<span><i class="icon fa-question icon-red fa-fw" aria-hidden="true"></i></span>
@@ -304,6 +305,12 @@
 					{S_FORM_TOKEN}
 				</p>
 			</form>
+			<!-- ELSE -->
+				<p class="post-notice unapproved">
+					<span><i class="icon fa-exclamation icon-red fa-fw" aria-hidden="true"></i></span>
+					<strong>{L_POST_UNAPPROVED_EXPLAIN}</strong>
+				</p>
+			<!-- ENDIF -->
 			<!-- ELSEIF postrow.S_POST_DELETED -->
 			<form method="post" class="mcp_approve" action="{postrow.U_APPROVE_ACTION}">
 				<p class="post-notice deleted">
diff --git a/phpBB/viewforum.php b/phpBB/viewforum.php
index 4691512cbd..eb6b37ada8 100644
--- a/phpBB/viewforum.php
+++ b/phpBB/viewforum.php
@@ -899,6 +899,11 @@ if (count($topic_list))
 
 		// Replies
 		$replies = $phpbb_content_visibility->get_count('topic_posts', $row, $topic_forum_id) - 1;
+		// Correction for case of unapproved topic visible to poster
+		if ($replies < 0)
+		{
+			$replies = 0;
+		}
 
 		if ($row['topic_status'] == ITEM_MOVED)
 		{
diff --git a/phpBB/viewtopic.php b/phpBB/viewtopic.php
index 4e502538c8..df241a5e8b 100644
--- a/phpBB/viewtopic.php
+++ b/phpBB/viewtopic.php
@@ -2092,6 +2092,7 @@ for ($i = 0, $end = count($post_list); $i < $end; ++$i)
 		'S_HAS_ATTACHMENTS'	=> (!empty($attachments[$row['post_id']])) ? true : false,
 		'S_MULTIPLE_ATTACHMENTS'	=> !empty($attachments[$row['post_id']]) && count($attachments[$row['post_id']]) > 1,
 		'S_POST_UNAPPROVED'	=> ($row['post_visibility'] == ITEM_UNAPPROVED || $row['post_visibility'] == ITEM_REAPPROVE) ? true : false,
+		'S_CAN_APPROVE'		=> $auth->acl_get('m_approve', $forum_id),
 		'S_POST_DELETED'	=> ($row['post_visibility'] == ITEM_DELETED) ? true : false,
 		'L_POST_DELETED_MESSAGE'	=> $l_deleted_message,
 		'S_POST_REPORTED'	=> ($row['post_reported'] && $auth->acl_get('m_report', $forum_id)) ? true : false,