diff options
| author | C. Davis <cd.rattan@gmail.com> | 2012-08-19 19:11:16 -0700 |
|---|---|---|
| committer | Michael Adam <obnox@samba.org> | 2013-04-29 13:07:54 +0200 |
| commit | 8ea38ce970d7539c25d4da08065d6bfa999f3e96 (patch) | |
| tree | 17d68242f17a8535bf4e3d6554e8cefd7cd882c9 /source3/utils/regedit_hexedit.c | |
| parent | ad15a83357dccc9a41ade1642cca24a0b7de92df (diff) | |
| download | samba-8ea38ce970d7539c25d4da08065d6bfa999f3e96.tar.gz | |
regedit: Handle zero-length buffers better with hexedit.
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Diffstat (limited to 'source3/utils/regedit_hexedit.c')
| -rw-r--r-- | source3/utils/regedit_hexedit.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/source3/utils/regedit_hexedit.c b/source3/utils/regedit_hexedit.c index e2864e3fae3..8f1c2c72f87 100644 --- a/source3/utils/regedit_hexedit.c +++ b/source3/utils/regedit_hexedit.c @@ -93,8 +93,12 @@ static size_t bytes_per_screen(WINDOW *win) void hexedit_set_cursor(struct hexedit *buf) { werase(buf->status_line); - wprintw(buf->status_line, "Len:%lu Off:%lu Val:0x%X", buf->len, - buf->cursor_offset, buf->data[buf->cursor_offset]); + if (buf->len) { + wprintw(buf->status_line, "Len:%lu Off:%lu Val:0x%X", buf->len, + buf->cursor_offset, buf->data[buf->cursor_offset]); + } else { + wprintw(buf->status_line, "Len:%lu (empty)", buf->len); + } wmove(buf->win, buf->cursor_y, buf->cursor_x); wcursyncup(buf->win); wsyncup(buf->win); @@ -108,6 +112,10 @@ void hexedit_refresh(struct hexedit *buf) size_t off; werase(buf->win); + if (buf->len == 0) { + mvwprintw(buf->win, 0, 0, "%08X", 0); + return; + } end = buf->offset + bytes_per_screen(buf->win); if (end > buf->len) { @@ -294,6 +302,9 @@ static void cursor_right(struct hexedit *buf) { int new_x = buf->cursor_x + 1; + if (buf->len == 0) { + return; + } if (new_x == ASCII_COL_END) { return; } @@ -335,6 +346,10 @@ static void do_edit(struct hexedit *buf, int c) { uint8_t *byte; + if (buf->len == 0) { + return; + } + byte = buf->data + buf->cursor_offset; if (buf->cursor_x >= ASCII_COL) { |