From 2d78ed5127a335a88a7c3cc83b19dbb8e11b0dd9 Mon Sep 17 00:00:00 2001
From: Graham Percival <gperciva@tarsnap.com>
Date: Tue, 24 Dec 2024 11:51:50 -0800
Subject: [PATCH] Reject relative path for test refdir (#2445)

(cherry picked from commit af4a3562cd436d8b469404759f780c1ca7fe8f12)
---
 test_utils/test_main.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test_utils/test_main.c b/test_utils/test_main.c
index ac4d3a078..a823de14d 100644
--- a/test_utils/test_main.c
+++ b/test_utils/test_main.c
@@ -4124,6 +4124,19 @@ main(int argc, char **argv)
 		strncat(testprg, "\"", testprg_len);
 		testprog = testprg;
 	}
+
+	/* Sanity check: reject a relative path for refdir. */
+	if (refdir != NULL) {
+#if defined(_WIN32) && !defined(__CYGWIN__)
+		/* TODO: probably use PathIsRelative() from <shlwapi.h>. */
+#else
+		if (refdir[0] != '/') {
+			fprintf(stderr,
+			    "ERROR: Cannot use relative path for refdir\n");
+			exit(1);
+		}
+#endif
+	}
 #endif
 
 #if !defined(_WIN32) && defined(SIGPIPE)
-- 
2.47.3