Mercurial > hg > early-roguelike
view urogue/save.c @ 314:2f0eb38da609
Advanced Rogue 7: fix a crash when casting magic missile.
do_zap() dereferenced a struct object pointer while ignoring the result
of a NULL check. XRogue had the same problem, though triggering it was
unlikely, since XRogue does not include a magic missile spell.
Reported by John Harris of @Play.
author | John "Elwin" Edwards |
---|---|
date | Thu, 21 Oct 2021 21:00:15 -0400 |
parents | 1db299e868b8 |
children |
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/* save.c - save and restore routines UltraRogue: The Ultimate Adventure in the Dungeons of Doom Copyright (C) 1985, 1986, 1992, 1993, 1995 Herb Chong All rights reserved. Based on "Advanced Rogue" Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka 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. */ #define _ALL_SOURCE /* need to remove need for this AIXism */ #include <time.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include <errno.h> #include "rogue.h" int save_savedir_game(void); int save_game(void) { FILE *savefd; char buf[2 * LINELEN]; char oldfile[2*LINELEN]; if (use_savedir) return save_savedir_game(); /* get file name */ strcpy(oldfile,file_name); do { mpos = 0; if (oldfile[0] != '\0') msg("Save file [%s]: ", file_name); else msg("Save file as: "); mpos = 0; buf[0] = '\0'; if (get_string(buf, cw) == QUIT) { msg(""); return(FALSE); } if ( (buf[0] == 0) && (oldfile[0] != 0) ) strcpy(file_name, oldfile); else if (buf[0] != 0) strcpy(file_name, buf); else { msg(""); return(FALSE); } wclear(hw); wmove(hw, LINES - 1, 0); wrefresh(hw); if ((savefd = fopen(file_name, "w")) == NULL) msg(strerror(errno)); /* fake perror() */ } while (savefd == NULL); /* write out [compressed?] file */ save_file(savefd); return(TRUE); } /* * save_savedir_game() * Simplified save function for when system savefiles are used. */ int save_savedir_game(void) { FILE *savef; char c; mpos = 0; msg("Save game? "); c = readcharw(cw); if (c == 'y' || c == 'Y') { if ((savef = fopen(file_name, "w")) == NULL) { msg(strerror(errno)); return(FALSE); } msg(""); save_file(savef); return(TRUE); } else { msg(""); return(FALSE); } } void auto_save(int sig) { FILE *savef; md_ignore_signals(); if (file_name[0] && (savef = fopen(file_name, "w"))) { save_file(savef); } exit(0); } int restore(char *file) { FILE *infd; char *sp; if (strcmp(file, "-r") == 0) file = file_name; if ((infd = fopen(file, "r")) == NULL) { if (use_savedir && errno == ENOENT) return TRUE; perror(file); return(FALSE); } if ( restore_file(infd) == FALSE ) return(FALSE); /* * we do not close the file so that we will have a hold of the inode * for as long as possible */ if (remove(file) < 0) { printf("Cannot unlink file\n"); return(FALSE); } if ((sp = getenv("OPTIONS")) != NULL) parse_opts(sp); strcpy(file_name, file); clearok(cw, TRUE); touchwin(cw); noecho(); nonl(); while(playing) { do_daemons(BEFORE); do_fuses(BEFORE); command(); /* Command execution */ if (after) do_after_effects(); } fatal(""); return(FALSE); }