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TAPE: Fix potential buffer overflow when staging an in memory ANSI tape image

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This commit is contained in:
Mark Pizzolato
2023-12-04 10:57:52 -10:00
parent 6d376b2fd9
commit f4f302982e
1 changed files with 3 additions and 3 deletions
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6
sim_tape.c
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@@ -4543,9 +4543,9 @@ static void ansi_make_HDR1 (HDR1 *hdr1, VOL1 *vol, HDR4 *hdr4, const char *filen
memcpy (hdr4->type, "HDR", 3);
hdr4->num = '4';
to_ansi_a (hdr1->file_ident, fn, sizeof (hdr1->file_ident));
if (strlen (fn) > 17) {
to_ansi_a (hdr4->extra_name, fn + 17, sizeof (hdr4->extra_name));
sprintf (extra_name_used, "%02d", (int)(strlen (fn) - 17));
if (strlen (fn) > sizeof (hdr1->file_ident)) {
to_ansi_a (hdr4->extra_name, fn + sizeof (hdr1->file_ident), sizeof (hdr4->extra_name));
snprintf (extra_name_used, sizeof (extra_name_used), "%02d", (int)(MIN((strlen (fn) - sizeof (hdr1->file_ident)), sizeof (hdr4->extra_name))));
}
memcpy (hdr4->extra_name_used, extra_name_used, 2);
memcpy (hdr1->file_set, vol->ident, sizeof (hdr1->file_set));