From: Baptiste Daroussin <bapt@FreeBSD.org>
Date: Thu, 28 Oct 2021 15:10:00 +0000 (+0200)
Subject: mlmmj-unsub: fix an issue when the reported subdir of pointer is NULL
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9add22717c98f73178532e7964bb5f64683c7beb;p=thirdparty%2Fmlmmj.git

mlmmj-unsub: fix an issue when the reported subdir of pointer is NULL
---

diff --git a/src/subscriberfuncs.c b/src/subscriberfuncs.c
index ea4960e7..c539681e 100644
--- a/src/subscriberfuncs.c
+++ b/src/subscriberfuncs.c
@@ -182,22 +182,26 @@ int
 open_subscriber_directory(struct mlmmj_list *list, enum subtype typesub, const char **subdir)
 {
 	int fd;
+	const char *dir;
+
 	switch (typesub) {
 	default:
 	case SUB_NORMAL:
-		*subdir = "subscribers.d";
+		dir = "subscribers.d";
 		break;
 	case SUB_DIGEST:
-		*subdir = "digesters.d";
+		dir = "digesters.d";
 		break;
 	case SUB_NOMAIL:
-		*subdir = "nomailsubs.d";
+		dir = "nomailsubs.d";
 		break;
 	}
 
-	fd = openat(list->fd, *subdir, O_DIRECTORY|O_CLOEXEC);
+	if (subdir != NULL)
+		*subdir = dir;
+	fd = openat(list->fd, dir, O_DIRECTORY|O_CLOEXEC);
 	if (fd == -1)
-		err(EXIT_FAILURE, "Unable to open %s/%s", list->dir, *subdir);
+		err(EXIT_FAILURE, "Unable to open %s/%s", list->dir, dir);
 	return (fd);
 }