view rogue5/rings.c @ 310:827441d05b3e

Advanced Rogue family: fix some potential buffer overflows. Some code for determining the score file location assumed that PATH_MAX would be less than 1024, which cannot be guaranteed. Advanced Rogue 5 and 7, and XRogue, have had the buffers for the file name enlarged. UltraRogue never called the functions, so the code has been deleted instead.
author John "Elwin" Edwards
date Mon, 03 May 2021 19:05:37 -0400
parents f502bf60e6e4
children
line wrap: on
line source

/*
 * Routines dealing specifically with rings
 *
 * @(#)rings.c	4.19 (Berkeley) 05/29/83
 *
 * Rogue: Exploring the Dungeons of Doom
 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
 * All rights reserved.
 *
 * See the file LICENSE.TXT for full copyright and licensing information.
 */

#include <curses.h>
#include "rogue.h"

/*
 * ring_on:
 *	Put a ring on a hand
 */

void
ring_on(void)
{
    THING *obj;
    int ring;

    obj = get_item("put on", RING);
    /*
     * Make certain that it is somethings that we want to wear
     */
    if (obj == NULL)
	return;
    if (obj->o_type != RING)
    {
	if (!terse)
	    msg("it would be difficult to wrap that around a finger");
	else
	    msg("not a ring");
	return;
    }

    /*
     * find out which hand to put it on
     */
    if (is_current(obj))
	return;

    if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL)
    {
	if ((ring = gethand()) < 0)
	    return;
    }
    else if (cur_ring[LEFT] == NULL)
	ring = LEFT;
    else if (cur_ring[RIGHT] == NULL)
	ring = RIGHT;
    else
    {
	if (!terse)
	    msg("you already have a ring on each hand");
	else
	    msg("wearing two");
	return;
    }
    cur_ring[ring] = obj;

    /*
     * Calculate the effect it has on the poor guy.
     */
    switch (obj->o_which)
    {
	case R_ADDSTR:
	    chg_str(obj->o_arm);
	    break;
	case R_SEEINVIS:
	    invis_on();
	    break;
	case R_AGGR:
	    aggravate();
	    break;
    }

    if (!terse)
	addmsg("you are now wearing ");
    msg("%s (%c)", inv_name(obj, TRUE), obj->o_packch);
}

/*
 * ring_off:
 *	take off a ring
 */

void
ring_off(void)
{
    int ring;
    THING *obj;

    if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL)
    {
	if (terse)
	    msg("no rings");
	else
	    msg("you aren't wearing any rings");
	return;
    }
    else if (cur_ring[LEFT] == NULL)
	ring = RIGHT;
    else if (cur_ring[RIGHT] == NULL)
	ring = LEFT;
    else
	if ((ring = gethand()) < 0)
	    return;
    mpos = 0;
    obj = cur_ring[ring];
    if (obj == NULL)
    {
	msg("not wearing such a ring");
	return;
    }
    if (dropcheck(obj))
	msg("was wearing %s(%c)", inv_name(obj, TRUE), obj->o_packch);
}

/*
 * gethand:
 *	Which hand is the hero interested in?
 */
int
gethand(void)
{
    int c;

    for (;;)
    {
	if (terse)
	    msg("left or right ring? ");
	else
	    msg("left hand or right hand? ");
	if ((c = readchar()) == ESCAPE)
	    return -1;
	mpos = 0;
	if (c == 'l' || c == 'L')
	    return LEFT;
	else if (c == 'r' || c == 'R')
	    return RIGHT;
	if (terse)
	    msg("L or R");
	else
	    msg("please type L or R");
    }
}

/*
 * ring_eat:
 *	How much food does this ring use up?
 */
int
ring_eat(int hand)
{
    THING *ring;
    int eat;
    int uses[] = {
	 1,	/* R_PROTECT */		 1,	/* R_ADDSTR */
	 1,	/* R_SUSTSTR */		-3,	/* R_SEARCH */
	-5,	/* R_SEEINVIS */	 0,	/* R_NOP */
	 0,	/* R_AGGR */		-3,	/* R_ADDHIT */
	-3,	/* R_ADDDAM */		 2,	/* R_REGEN */
	-2,	/* R_DIGEST */		 0,	/* R_TELEPORT */
	 1,	/* R_STEALTH */		 1	/* R_SUSTARM */
    };

    if ((ring = cur_ring[hand]) == NULL)
	return 0;
    if ((eat = uses[ring->o_which]) < 0)
	eat = (rnd(-eat) == 0);
    if (ring->o_which == R_DIGEST)
	eat = -eat;
    return eat;
}

/*
 * ring_num:
 *	Print ring bonuses
 */
const char *
ring_num(const THING *obj)
{
    static char buf[10];

    if (!(obj->o_flags & ISKNOW))
	return "";
    switch (obj->o_which)
    {
	case R_PROTECT:
	case R_ADDSTR:
	case R_ADDDAM:
	case R_ADDHIT:
	    sprintf(buf, " [%s]", num(obj->o_arm, 0, RING));
	otherwise:
	    return "";
    }
    return buf;
}