Make deleted comments visible to Trusted Users

This allows Trusted Users to check whether a user posted a politically
incorrect comment, even if he already deleted it.
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

web/html/css/aur.css

@@ -68,3 +68,7 @@
 	padding: 0;
 	border: none;
 }
+
+.comment-deleted {
+	color: #999;
+}

web/lib/credentials.inc.php

@@ -7,6 +7,7 @@ define("CRED_ACCOUNT_EDIT_DEV", 3);
 define("CRED_ACCOUNT_LAST_LOGIN", 4);
 define("CRED_ACCOUNT_SEARCH", 5);
 define("CRED_COMMENT_DELETE", 6);
+define("CRED_COMMENT_VIEW_DELETED", 22);
 define("CRED_PKGBASE_ADOPT", 7);
 define("CRED_PKGBASE_CHANGE_CATEGORY", 8);
 define("CRED_PKGBASE_DELETE", 9);
@@ -55,6 +56,7 @@ function has_credential($credential, $approved_users=array()) {
 	case CRED_ACCOUNT_LAST_LOGIN:
 	case CRED_ACCOUNT_SEARCH:
 	case CRED_COMMENT_DELETE:
+	case CRED_COMMENT_VIEW_DELETED:
 	case CRED_PKGBASE_ADOPT:
 	case CRED_PKGBASE_CHANGE_CATEGORY:
 	case CRED_PKGBASE_DELETE:

web/lib/pkgbasefuncs.inc.php

@@ -25,10 +25,11 @@ function pkgbase_categories() {
  * Get the number of non-deleted comments for a specific package base
  *
  * @param string $base_id The package base ID to get comment count for
+ * @param bool $include_deleted True if deleted comments should be included
  *
  * @return string The number of comments left for a specific package
  */
-function pkgbase_comments_count($base_id) {
+function pkgbase_comments_count($base_id, $include_deleted) {
 	$base_id = intval($base_id);
 	if (!$base_id) {
 		return null;
@@ -37,7 +38,9 @@ function pkgbase_comments_count($base_id) {
 	$dbh = DB::connect();
 	$q = "SELECT COUNT(*) FROM PackageComments ";
 	$q.= "WHERE PackageBaseID = " . $base_id . " ";
-	$q.= "AND DelUsersID IS NULL";
+	if (!$include_deleted) {
+		$q.= "AND DelUsersID IS NULL";
+	}
 	$result = $dbh->query($q);
 	if (!$result) {
 		return null;
@@ -51,10 +54,11 @@ function pkgbase_comments_count($base_id) {
  *
  * @param int $base_id The package base ID to get comments for
  * @param int $limit Maximum number of comments to return (0 means unlimited)
+ * @param bool $include_deleted True if deleted comments should be included
  *
  * @return array All package comment information for a specific package base
  */
-function pkgbase_comments($base_id, $limit) {
+function pkgbase_comments($base_id, $limit, $include_deleted) {
 	$base_id = intval($base_id);
 	$limit = intval($limit);
 	if (!$base_id) {
@@ -63,10 +67,13 @@ function pkgbase_comments($base_id, $limit) {
 
 	$dbh = DB::connect();
 	$q = "SELECT PackageComments.ID, UserName, UsersID, Comments, ";
-	$q.= "CommentTS FROM PackageComments LEFT JOIN Users ";
+	$q.= "CommentTS, DelUsersID FROM PackageComments LEFT JOIN Users ";
 	$q.= "ON PackageComments.UsersID = Users.ID ";
 	$q.= "WHERE PackageBaseID = " . $base_id . " ";
-	$q.= "AND DelUsersID IS NULL ORDER BY CommentTS DESC";
+	if (!$include_deleted) {
+		$q.= "AND DelUsersID IS NULL ";
+	}
+	$q.= "ORDER BY CommentTS DESC";
 	if ($limit > 0) {
 		$q.=" LIMIT " . $limit;
 	}
@@ -242,7 +249,8 @@ function pkgbase_display_details($base_id, $row, $SID="") {
 		}
 
 		$limit = isset($_GET['comments']) ? 0 : 10;
-		$comments = pkgbase_comments($base_id, $limit);
+		$include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
+		$comments = pkgbase_comments($base_id, $limit, $include_deleted);
 		if (!empty($comments)) {
 			include('pkg_comments.php');
 		}

web/lib/pkgfuncs.inc.php

@@ -436,7 +436,8 @@ function pkg_display_details($id=0, $row, $SID="") {
 		}
 
 		$limit = isset($_GET['comments']) ? 0 : 10;
-		$comments = pkgbase_comments($base_id, $limit);
+		$include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
+		$comments = pkgbase_comments($base_id, $limit, $include_deleted);
 		if (!empty($comments)) {
 			include('pkg_comments.php');
 		}

web/template/pkg_comments.php

@@ -6,7 +6,8 @@ if (isset($row['BaseID'])) {
 	/* On a package base details page. */
 	$base_id = $row['ID'];
 }
-$count = pkgbase_comments_count($base_id);
+$include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
+$count = pkgbase_comments_count($base_id, $include_deleted);
 ?>
 <div id="news">
 	<h3>
@@ -18,8 +19,8 @@ $count = pkgbase_comments_count($base_id);
 		<?php if ($row['UserName'] && $SID):
 			$row['UserName'] = "<a href=\"" . get_user_uri($row['UserName']) . "\">{$row['UserName']}</a>";
 		endif; ?>
-		<h4>
-			<?php if (can_delete_comment_array($row)): ?>
+		<h4<?php if ($row['DelUsersID']): ?> class="comment-deleted"<?php endif; ?>>
+			<?php if (!$row['DelUsersID'] && can_delete_comment_array($row)): ?>
 				<form method="post" action="<?= htmlspecialchars(get_pkgbase_uri($pkgbase_name), ENT_QUOTES); ?>">
 					<fieldset style="display:inline;">
 						<input type="hidden" name="action" value="do_DeleteComment" />
@@ -39,10 +40,13 @@ $count = pkgbase_comments_count($base_id);
 			<?php else: ?>
 			<?= __('Anonymous comment') ?>
 			<?php endif; ?>
+			<?php if ($row['DelUsersID']): ?>
+			(<?= __('deleted') ?>)
+			<?php endif; ?>
 			<?php endif; ?>
 		</h4>
 		<p class="timestamp"><?= gmdate('Y-m-d H:i', $row['CommentTS']) ?></p>
-		<div class="article-content">
+		<div class="article-content<?php if ($row['DelUsersID']): ?> comment-deleted<?php endif; ?>">
 			<p>
 				<?= parse_comment($row['Comments']) ?>
 			</p>