Mercurial > hg > early-roguelike
annotate rogue4/save.c @ 81:0e212d46b68f
rogue4: don't put savefile metadata into the savefile.
The save_file() function in save.c stored the savefile's device number,
inode number, creation time, and modification time in the file. The
restore() function read them back, and apparently used to compare them
to protect against cheaters.
Unfortunately, the types and sizes of these numbers differ from system
to system, which ruins the Roguelike Restoration Project's fine
portability work. So they have been removed from the savefile.
This BREAKS SAVEFILE COMPATIBILITY, but old files can be converted by
excising the chunk starting at offset 0x22 with length sizeof(ino_t) +
sizeof(dev_t) + 2 * sizeof(time_t). That's 0x14 on i686 and 0x20 on
x86_64, at least with current versions of Linux and glibc.
author | John "Elwin" Edwards |
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date | Mon, 05 Aug 2013 20:49:41 -0700 |
parents | 09da55b986ca |
children | a0d4caead33b |
rev | line source |
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12
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1 /* |
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2 * save and restore routines |
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3 * |
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4 * @(#)save.c 4.15 (Berkeley) 5/10/82 |
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5 * |
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6 * Rogue: Exploring the Dungeons of Doom |
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7 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman |
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8 * All rights reserved. |
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9 * |
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10 * See the file LICENSE.TXT for full copyright and licensing information. |
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11 */ |
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12 |
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13 #include <curses.h> |
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14 #include <sys/types.h> |
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15 #include <sys/stat.h> |
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16 #include <errno.h> |
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17 #include <string.h> |
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18 #include <stdlib.h> |
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19 #define KERNEL |
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20 #include <signal.h> |
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21 #undef KERNEL |
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22 #include "rogue.h" |
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23 |
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24 typedef struct stat STAT; |
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25 |
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26 extern char version[], encstr[]; |
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27 extern bool _endwin; |
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28 |
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29 STAT sbuf; |
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30 |
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31 /* |
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32 * save_game: |
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33 * Implement the "save game" command |
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34 */ |
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35 /* This has to be cleaned up, these goto's are annoying. */ |
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36 save_game() |
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37 { |
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38 register FILE *savef; |
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39 register int c; |
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40 char buf[MAXSTR]; |
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41 |
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42 /* |
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43 * get file name |
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44 */ |
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45 mpos = 0; |
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46 over: |
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47 if (file_name[0] != '\0') |
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48 { |
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49 for (;;) |
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50 { |
30 | 51 if (use_savedir) |
52 msg("Save game? "); | |
53 else | |
54 msg("save file (%s)? ", file_name); | |
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55 c = getchar(); |
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56 mpos = 0; |
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57 if (c == ESCAPE) |
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58 { |
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59 msg(""); |
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60 return FALSE; |
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61 } |
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62 else if (c == 'n' || c == 'N' || c == 'y' || c == 'Y') |
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63 break; |
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64 else |
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65 msg("please answer Y or N"); |
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66 } |
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67 if (c == 'y' || c == 'Y') |
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68 { |
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69 strcpy(buf, file_name); |
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70 goto gotfile; |
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71 } |
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72 } |
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73 |
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74 if (use_savedir) |
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75 { |
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76 /* You can't change the savefile if you're using the system |
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77 savedir, because that means you have privileges. */ |
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78 msg(""); |
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79 return FALSE; |
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80 } |
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81 |
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82 do |
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83 { |
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84 mpos = 0; |
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85 msg("file name: "); |
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86 buf[0] = '\0'; |
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87 if (get_str(buf, stdscr) == QUIT) |
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88 { |
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89 quit: |
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90 msg(""); |
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91 return FALSE; |
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92 } |
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93 mpos = 0; |
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94 gotfile: |
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95 /* |
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96 * test to see if the file exists |
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97 */ |
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98 if (stat(buf, &sbuf) >= 0) |
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99 { |
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100 for (;;) |
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101 { |
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102 msg("File exists. Do you wish to overwrite it?"); |
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103 mpos = 0; |
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