Initial rogue libcc
This commit is contained in:
jl777
400
src/cc/rogue/save.c
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400
src/cc/rogue/save.c
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/*
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* save and restore routines
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*
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* @(#)save.c 4.33 (Berkeley) 06/01/83
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*
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* Rogue: Exploring the Dungeons of Doom
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* Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
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* All rights reserved.
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*
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* See the file LICENSE.TXT for full copyright and licensing information.
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*/
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <signal.h>
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#include <string.h>
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#include <curses.h>
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#include "rogue.h"
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#include "score.h"
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typedef struct stat STAT;
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extern char version[], encstr[];
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static STAT sbuf;
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/*
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* save_game:
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* Implement the "save game" command
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*/
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void
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save_game(struct rogue_state *rs)
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{
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FILE *savef;
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int c;
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auto char buf[MAXSTR];
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/*
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* get file name
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*/
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mpos = 0;
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over:
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if (file_name[0] != '\0')
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{
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for (;;)
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{
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msg(rs,"save file (%s)? ", file_name);
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c = readchar(rs);
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mpos = 0;
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if (c == ESCAPE)
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{
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msg(rs,"");
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return;
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}
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else if (c == 'n' || c == 'N' || c == 'y' || c == 'Y')
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break;
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else
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msg(rs,"please answer Y or N");
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}
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if (c == 'y' || c == 'Y')
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{
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addstr("Yes\n");
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refresh();
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strcpy(buf, file_name);
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goto gotfile;
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}
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}
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do
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{
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mpos = 0;
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msg(rs,"file name: ");
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buf[0] = '\0';
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if (get_str(rs,buf, stdscr) == QUIT)
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{
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quit_it:
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msg(rs,"");
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return;
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}
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mpos = 0;
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gotfile:
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/*
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* test to see if the file exists
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*/
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if (stat(buf, &sbuf) >= 0)
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{
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for (;;)
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{
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msg(rs,"File exists. Do you wish to overwrite it?");
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mpos = 0;
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if ((c = readchar(rs)) == ESCAPE)
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goto quit_it;
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if (c == 'y' || c == 'Y')
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break;
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else if (c == 'n' || c == 'N')
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goto over;
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else
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msg(rs,"Please answer Y or N");
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}
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msg(rs,"file name: %s", buf);
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md_unlink(file_name);
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}
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strcpy(file_name, buf);
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if ((savef = fopen(file_name, "w")) == NULL)
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msg(rs,strerror(errno));
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} while (savef == NULL);
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save_file(savef,1);
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/* NOTREACHED */
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}
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/*
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* auto_save:
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* Automatically save a file. This is used if a HUP signal is
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* recieved
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*/
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void
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auto_save(int sig)
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{
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FILE *savef;
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NOOP(sig);
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md_ignoreallsignals();
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if (file_name[0] != '\0' && ((savef = fopen(file_name, "w")) != NULL ||
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(md_unlink_open_file(file_name, savef) >= 0 && (savef = fopen(file_name, "w")) != NULL)))
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save_file(savef,1);
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exit(0);
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}
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/*
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* save_file:
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* Write the saved game on the file
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*/
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void
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save_file(FILE *savef,int32_t guiflag)
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{
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char buf[80];
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mvcur(0, COLS - 1, LINES - 1, 0);
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putchar('\n');
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endwin();
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resetltchars();
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md_chmod(file_name, 0400);
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if ( guiflag != 0 )
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{
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encwrite(version, strlen(version)+1, savef);
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sprintf(buf,"%d x %d\n", LINES, COLS);
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encwrite(buf,80,savef);
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}
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rs_save_file(savef);
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fflush(savef);
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fclose(savef);
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if ( guiflag != 0 )
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exit(0);
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}
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/*
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* restore:
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* Restore a saved game from a file with elaborate checks for file
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* integrity from cheaters
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*/
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bool
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restore(struct rogue_state *rs,char *file, char **envp)
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{
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FILE *inf;
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int syml;
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extern char **environ;
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auto char buf[MAXSTR];
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auto STAT sbuf2;
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int lines, cols;
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if (strcmp(file, "-r") == 0)
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file = file_name;
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md_tstphold();
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if ((inf = fopen(file,"r")) == NULL)
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{
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perror(file);
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return FALSE;
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}
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stat(file, &sbuf2);
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syml = is_symlink(file);
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fflush(stdout);
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encread(buf, (unsigned) strlen(version) + 1, inf);
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if (strcmp(buf, version) != 0)
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{
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printf("Sorry, saved game is out of date.\n");
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return FALSE;
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}
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encread(buf,80,inf);
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sscanf(buf,"%d x %d\n", &lines, &cols);
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initscr(); /* Start up cursor package */
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keypad(stdscr, 1);
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if (lines > LINES)
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{
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endwin();
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printf("Sorry, original game was played on a screen with %d lines.\n",lines);
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printf("Current screen only has %d lines. Unable to restore game\n",LINES);
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return(FALSE);
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}
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if (cols > COLS)
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{
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endwin();
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printf("Sorry, original game was played on a screen with %d columns.\n",cols);
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printf("Current screen only has %d columns. Unable to restore game\n",COLS);
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return(FALSE);
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}
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hw = newwin(LINES, COLS, 0, 0);
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setup();
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rs_restore_file(inf);
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/*
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* we do not close the file so that we will have a hold of the
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* inode for as long as possible
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*/
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if (
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#ifdef MASTER
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!wizard &&
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#endif
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md_unlink_open_file(file, inf) < 0)
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{
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printf("Cannot unlink file\n");
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return FALSE;
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}
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mpos = 0;
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/* printw(0, 0, "%s: %s", file, ctime(&sbuf2.st_mtime)); */
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/*
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printw("%s: %s", file, ctime(&sbuf2.st_mtime));
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*/
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clearok(stdscr,TRUE);
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/*
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* defeat multiple restarting from the same place
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*/
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#ifdef MASTER
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if (!wizard)
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#endif
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if (sbuf2.st_nlink != 1 || syml)
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{
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endwin();
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printf("\nCannot restore from a linked file\n");
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return FALSE;
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}
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if (pstats.s_hpt <= 0)
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{
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endwin();
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printf("\n\"He's dead, Jim\"\n");
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return FALSE;
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}
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md_tstpresume();
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environ = envp;
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strcpy(file_name, file);
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clearok(curscr, TRUE);
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srand((int32_t)rs->seed);//md_getpid());
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msg(rs,"file name: %s", file);
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playit(rs);
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/*NOTREACHED*/
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return(0);
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}
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/*
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* encwrite:
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* Perform an encrypted write
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*/
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#define CRYPT_ENABLE 0
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size_t
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encwrite(char *start, size_t size, FILE *outf)
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{
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char *e1, *e2, fb;
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int temp;
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extern char statlist[];
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size_t o_size = size;
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e1 = encstr;
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e2 = statlist;
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fb = 0;
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while(size)
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{
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if ( CRYPT_ENABLE )
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{
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if (putc(*start++ ^ *e1 ^ *e2 ^ fb, outf) == EOF)
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break;
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temp = *e1++;
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fb = fb + ((char) (temp * *e2++));
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if (*e1 == '\0')
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e1 = encstr;
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if (*e2 == '\0')
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e2 = statlist;
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}
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else if ( putc(*start++,outf) == EOF )
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break;
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size--;
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}
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return(o_size - size);
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}
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/*
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* encread:
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* Perform an encrypted read
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*/
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size_t
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encread(char *start, size_t size, FILE *inf)
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{
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char *e1, *e2, fb;
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int temp;
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size_t read_size;
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extern char statlist[];
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fb = 0;
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if ((read_size = fread(start,1,size,inf)) == 0 || read_size == -1)
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return(read_size);
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if ( CRYPT_ENABLE )
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{
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e1 = encstr;
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e2 = statlist;
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while (size--)
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{
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*start++ ^= *e1 ^ *e2 ^ fb;
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temp = *e1++;
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fb = fb + (char)(temp * *e2++);
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if (*e1 == '\0')
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e1 = encstr;
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if (*e2 == '\0')
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e2 = statlist;
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}
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}
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return(read_size);
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}
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static char scoreline[100];
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/*
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* read_scrore
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* Read in the score file
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*/
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void
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rd_score(SCORE *top_ten)
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{
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unsigned int i;
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if (scoreboard == NULL)
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return;
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rewind(scoreboard);
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for(i = 0; i < numscores; i++)
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{
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encread(top_ten[i].sc_name, MAXSTR, scoreboard);
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encread(scoreline, 100, scoreboard);
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sscanf(scoreline, " %u %d %u %hu %d %x \n",
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&top_ten[i].sc_uid, &top_ten[i].sc_score,
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&top_ten[i].sc_flags, &top_ten[i].sc_monster,
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&top_ten[i].sc_level, &top_ten[i].sc_time);
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}
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rewind(scoreboard);
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}
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/*
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* write_scrore
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* Read in the score file
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*/
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void
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wr_score(SCORE *top_ten)
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{
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unsigned int i;
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if (scoreboard == NULL)
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return;
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rewind(scoreboard);
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for(i = 0; i < numscores; i++)
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{
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memset(scoreline,0,100);
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encwrite(top_ten[i].sc_name, MAXSTR, scoreboard);
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sprintf(scoreline, " %u %d %u %hu %d %x \n",
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top_ten[i].sc_uid, top_ten[i].sc_score,
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top_ten[i].sc_flags, top_ten[i].sc_monster,
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top_ten[i].sc_level, top_ten[i].sc_time);
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encwrite(scoreline,100,scoreboard);
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}
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rewind(scoreboard);
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}
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