From 02ebd9a0998917c6b60d8a9d16cd6430cdd8dc26 Mon Sep 17 00:00:00 2001
From: smitsohu <smitsohu@gmail.com>
Date: Wed, 21 Jul 2021 23:56:26 +0200
Subject: output options: expand ~

---
 src/firejail/output.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/firejail/output.c b/src/firejail/output.c
index 835dff2db..ce10ab157 100644
--- a/src/firejail/output.c
+++ b/src/firejail/output.c
@@ -50,13 +50,21 @@ void check_output(int argc, char **argv) {
 	if (!outindex)
 		return;
 
-
-	// check filename
 	drop_privs(0);
 	char *outfile = argv[outindex];
 	outfile += (enable_stderr)? 16:9;
+
+	// check filename
 	invalid_filename(outfile, 0); // no globbing
 
+	// expand user home directory
+	if (outfile[0] == '~') {
+		char *full;
+		if (asprintf(&full, "%s%s", cfg.homedir, outfile + 1) == -1)
+			errExit("asprintf");
+		outfile = full;
+	}
+
 	// do not accept directories, links, and files with ".."
 	if (strstr(outfile, "..") || is_link(outfile) || is_dir(outfile)) {
 		fprintf(stderr, "Error: invalid output file. Links, directories and files with \"..\" are not allowed.\n");
-- 
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