diff options
| -rw-r--r-- | net.c | 16 |
1 files changed, 14 insertions, 2 deletions
@@ -2044,8 +2044,20 @@ static char *encode_ui(const game_ui *ui) static void decode_ui(game_ui *ui, const char *encoding, const game_state *state) { - sscanf(encoding, "O%d,%d;C%d,%d", - &ui->org_x, &ui->org_y, &ui->cx, &ui->cy); + int org_x, org_y, cx, cy; + + if (sscanf(encoding, "O%d,%d;C%d,%d", &org_x, &org_y, &cx, &cy) == 4) { + if (0 <= org_x && org_x < state->width && + 0 <= org_y && org_y < state->height) { + ui->org_x = org_x; + ui->org_y = org_y; + } + if (0 <= cx && cx < state->width && + 0 <= cy && cy < state->height) { + ui->cx = cx; + ui->cy = cy; + } + } } static void game_changed_state(game_ui *ui, const game_state *oldstate, |