view srogue/save.c @ 306:057c5114e244

Super-Rogue: fix some out-of-range constants. Constants K_ARROW etc., for causes of death other than monsters, are in the 240-255 range. They were often passed to functions taking char, which is usually signed, making the values out of range. The function declarations have been changed to unsigned char, which is also the type used by the scoreboard code.
author John "Elwin" Edwards
date Sat, 17 Apr 2021 15:41:12 -0400
parents e52a8a7ad4c5
children
line wrap: on
line source

/*
 * save and restore routines
 *
 * @(#)save.c	9.0	(rdk)	 7/17/84
 *
 * Super-Rogue
 * Copyright (C) 1984 Robert D. Kindelberger
 * All rights reserved.
 *
 * Based on "Rogue: Exploring the Dungeons of Doom"
 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
 * All rights reserved.
 *
 * See the file LICENSE.TXT for full copyright and licensing information.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
#if !defined(_WIN32)
#include <unistd.h>
#endif
#include "rogue.h"
#include "rogue.ext"

EXTCHAR version[];

bool dosave(void);
void save_file(FILE *savef);

typedef struct stat STAT;
STAT sbuf;

/*
 * ignore:
 *	Ignore ALL signals possible
 */
void
ignore(void)
{
	md_ignoreallsignals();
}

/*
 * save_game:
 *	Save the current game
 */
bool
save_game(void)
{
	reg int c;
	char buf[LINLEN];

	mpos = 0;
	if (file_name[0] != '\0') {
		if (use_savedir)
			msg("Save game? (y/n) ");
		else
			msg("Save file (%s)? ", file_name);
		do {
			c = wgetch(cw);
			if(c == ESCAPE) {
				msg("");
				return FALSE;
			}
		} while (c != 'n' && c != 'y');
		mpos = 0;
		if (c == 'y')
			goto gotfile;
	}
	if (use_savedir) {
		msg("");
		return FALSE;
	}
	msg("File name: ");
	mpos = 0;
	buf[0] = '\0';
	if (get_str(buf, cw) == QUIT) {
		msg("");
		return FALSE;
	}
	msg("");
	strcpy(file_name, buf);
gotfile:
	c = dosave();		/* try to save this game */
	if (c == FALSE)
		msg("Could not save game to file %s", file_name);
	return c;
}

/*
 * auto_save:
 *	Automatically save a game
 */
void
auto_save(int a)
{
	dosave();		/* save this game */
	byebye(1);		/* so long for now */
}

/*
 * game_err:
 *	When an error occurs. Set error flag and save game.
 */
void
game_err(int a)
{
	int ok;

	ok = dosave();			/* try to save this game */
	clear();
	refresh();
	endwin();

	printf("\nInternal error !!!\n\nYour game was ");
	if (ok)
		printf("saved.");
	else
		printf("NOT saveable.");

	fflush(stdout);

#ifdef SIGIOT
	signal(SIGIOT, SIG_DFL);	/* allow core dump signal */
#endif

	abort();			/* cause core dump */
	byebye(3);
}

/*
 * dosave:
 *	Save the game.  UID/GID no longer get reset here.
 */
bool
dosave(void)
{
	FILE *savef;

	ignore();
	umask(022);

	if (file_name[0] != '\0') {
		if ((savef = fopen(file_name,"w")) != NULL)
		{
			save_file(savef);
			return TRUE;
		}
	}
	return FALSE;
}

/*
 * save_file:
 *	Do the actual save of this game to a file
 */
void
save_file(FILE *savef)
{
	int slines = LINES;
	int scols = COLS;

#ifdef __DJGPP__                      /* st_ino w/ DJGPP under WinXP broken */
        _djstat_flags |= _STAT_INODE; /* so turn off computing it for now   */
#endif

	encwrite(version,strlen(version)+1,savef);
	encwrite(&slines,sizeof(slines),savef);
	encwrite(&scols,sizeof(scols),savef);
	msg("");
	rs_save_file(savef);
	fclose(savef);
	md_onsignal_exit();
	wclear(cw);
	draw(cw);
}

/*
 * restore:
 *	Restore a saved game from a file
 */
bool
restore(char *file, char **envp)
{
#ifndef _AIX
	extern char **environ;
#endif
#ifdef __DJGPP__                      /* st_ino w/ DJGPP under WinXP broken */
        _djstat_flags |= _STAT_INODE; /* so turn off computing it for now   */
#endif
	FILE *inf;
	char buf[LINLEN];
	STAT sbuf2;
	int slines, scols;

	if ((inf = fopen(file, "r")) == NULL) {
		if (use_savedir && errno == ENOENT)
			return TRUE;
		else {
			printf("Cannot read save game %s\n",file);
			return FALSE;
		}
	}

	encread(buf, strlen(version) + 1, inf);

	if (strcmp(buf, version) != 0) {
		printf("Sorry, saved game version is out of date.\n");
		return FALSE;
	}

	stat(file, &sbuf2);

	encread(&slines,sizeof(slines),inf);
	encread(&scols,sizeof(scols),inf);

	/*
	 * we do not close the file so that we will have a hold of the
	 * inode for as long as possible
	 */

#ifdef __INTERIX
	setenv("TERM","interix");
#endif

	initscr();

	if (slines > LINES)
	{
		endwin();
		printf("Sorry, original game was played on a screen with %d lines.\n",slines);
		printf("Current screen only has %d lines. Unable to restore game\n",LINES);
		return(FALSE);
	}

	if (scols > COLS)
	{
		endwin();
		printf("Sorry, original game was played on a screen with %d columns.\n", scols);
		printf("Current screen only has %d columns. Unable to restore game\n",COLS);
		return(FALSE);
	}

	cw = newwin(LINES, COLS, 0, 0);
	mw = newwin(LINES, COLS, 0, 0);
	hw = newwin(LINES, COLS, 0, 0);
        keypad(cw, 1);

	mpos = 0;
	mvwprintw(cw, 0, 0, "%s: %s", file, ctime(&sbuf2.st_mtime));

	/* defeat multiple restarting from the same place */

	if (!wizard)
	{
		if (sbuf2.st_nlink != 1)
		{
                        endwin();
			printf("Cannot restore from a linked file\n");
			return FALSE;
		}
	}

	if (rs_restore_file(inf) == FALSE)
	{
		endwin();
		printf("Cannot restore file\n");
		return(FALSE);
	}

#if defined(__CYGWIN__) || defined(__DJGPP__)
	fclose(inf);
#endif
	if (!wizard)
	{
		if (md_unlink_open_file(file, inf) < 0)
		{
			endwin();
			printf("Cannot unlink file\n");
			return FALSE;
		}
	}

	if (him->s_hpt <= 0) {
		endwin();
		printf("This character is already dead.\n");
		return FALSE;
	}

	environ = envp;

	strcpy(file_name, file);
	setup();
	restscr(cw);
	md_srandom(md_random_seed());
	playit();
	return FALSE;
}