ubusd: make ACL path configurable on the command line

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

ubusd.c

@@ -356,6 +356,7 @@ static int usage(const char *progname)
 {
 	fprintf(stderr, "Usage: %s [<options>]\n"
 		"Options: \n"
+		"  -A <path>:		Set the path to ACL files\n"
 		"  -s <socket>:		Set the unix domain socket to listen on\n"
 		"\n", progname);
 	return 1;
@@ -378,11 +379,14 @@ int main(int argc, char **argv)
 	openlog("ubusd", LOG_PID, LOG_DAEMON);
 	uloop_init();
 
-	while ((ch = getopt(argc, argv, "s:")) != -1) {
+	while ((ch = getopt(argc, argv, "A:s:")) != -1) {
 		switch (ch) {
 		case 's':
 			ubus_socket = optarg;
 			break;
+		case 'A':
+			ubusd_acl_dir = optarg;
+			break;
 		default:
 			return usage(argv[0]);
 		}

ubusd.h

@@ -64,6 +64,8 @@ struct ubus_path {
 	const char name[];
 };
 
+extern const char *ubusd_acl_dir;
+
 struct ubus_msg_buf *ubus_msg_new(void *data, int len, bool shared);
 void ubus_msg_send(struct ubus_client *cl, struct ubus_msg_buf *ub, bool free);
 void ubus_msg_free(struct ubus_msg_buf *ub);

ubusd_acl.c

@@ -62,6 +62,7 @@ struct ubusd_acl_file {
 	int ok;
 };
 
+const char *ubusd_acl_dir = "/usr/share/acl.d";
 static struct blob_buf bbuf;
 static struct avl_tree ubusd_acls;
 static int ubusd_acl_seq;
@@ -379,8 +380,11 @@ ubusd_acl_load(void)
 	struct stat st;
 	glob_t gl;
 	int j;
+	const char *suffix = "/*.json";
+	char *path = alloca(strlen(ubusd_acl_dir) + strlen(suffix) + 1);
 
-	if (glob("/usr/share/acl.d/*.json", GLOB_NOESCAPE | GLOB_MARK, NULL, &gl))
+	sprintf(path, "%s%s", ubusd_acl_dir, suffix);
+	if (glob(path, GLOB_NOESCAPE | GLOB_MARK, NULL, &gl))
 		return;
 
 	vlist_update(&ubusd_acl_files);