output options: expand ~

1 files 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");