Mercurial > hg > early-roguelike
view urogue/save.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 | 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); }