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csi: params_to_rectangular_area(): ensure left/right is within bounds

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Daniel Eklöf 2024-03-10 17:37:11 +01:00
parent 4ea4e5da4e
commit e2b3eb91dd
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1 changed files with 3 additions and 2 deletions
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csi.c
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@ -678,15 +678,16 @@ params_to_rectangular_area(const struct terminal *term, int first_idx,
int *top, int *left, int *bottom, int *right) int *top, int *left, int *bottom, int *right)
{ {
int rel_top = vt_param_get(term, first_idx + 0, 1) - 1; int rel_top = vt_param_get(term, first_idx + 0, 1) - 1;
*left = vt_param_get(term, first_idx + 1, 1) - 1; *left = min(vt_param_get(term, first_idx + 1, 1) - 1, term->cols - 1);
int rel_bottom = vt_param_get(term, first_idx + 2, term->rows) - 1; int rel_bottom = vt_param_get(term, first_idx + 2, term->rows) - 1;
*right = vt_param_get(term, first_idx + 3, term->cols) - 1; *right = min(vt_param_get(term, first_idx + 3, term->cols) - 1, term->cols - 1);
if (rel_top > rel_bottom || *left > *right) if (rel_top > rel_bottom || *left > *right)
return false; return false;
*top = term_row_rel_to_abs(term, rel_top); *top = term_row_rel_to_abs(term, rel_top);
*bottom = term_row_rel_to_abs(term, rel_bottom); *bottom = term_row_rel_to_abs(term, rel_bottom);
return true; return true;
} }