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annotate srogue/save.c @ 82:f11eeafc6568

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srogue: don't store machine-dependent metadata in the savefile. Super-Rogue, like Rogue V4, stored data of machine-dependent length in the savefile, to prevent cheating. This made saved games non-portable. Also deleted was a check that used this data, and prevented restoring savefiles from backup. This change BREAKS SAVEFILE COMPATIBILITY, but old files can be converted by removing the block at offset 0x1e with length sizeof(ino_t) + sizeof(dev_t) + 2 * sizeof(time_t). That seems to be 0x14 on i686 and 0x20 on x86_64.
author John "Elwin" Edwards
date Tue, 06 Aug 2013 19:02:58 -0700
parents 3aa87373c908
children d852b8f088c5
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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 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
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17 #include <stdlib.h>
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18 #include <string.h>
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19 #include <unistd.h>
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20 #include <ctype.h>
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21 #include <fcntl.h>
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22 #include <sys/types.h>
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23 #include <sys/stat.h>
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24 #include <signal.h>
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25 #include <errno.h>
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26 #include "rogue.h"
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27 #include "rogue.ext"
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28
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29 #ifdef BSD
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30 #define srand48(seed) srandom(seed)
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31 #endif
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32
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33 EXTCHAR version[];
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34 EXTCHAR *ctime();
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35
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36 typedef struct stat STAT;
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37 STAT sbuf;
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38
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39 /*
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40 * ignore:
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41 * Ignore ALL signals possible
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42 */
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43 ignore()
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44 {
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45 int i;
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46
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47 for (i = 0; i < NSIG; i++)
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48 signal(i, SIG_IGN);
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49 }
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50
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51 /*
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52 * save_game:
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53 * Save the current game
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54 */
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55 save_game()
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56 {
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57 reg FILE *savef;
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58 reg int c;
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59 char buf[LINLEN];
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60
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61 mpos = 0;
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62 if (file_name[0] != '\0') {
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63 if (use_savedir)
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64 msg("Save game? (y/n) ");
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65 else
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66 msg("Save file (%s)? ", file_name);
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67 do {
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68 c = wgetch(cw);
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69 if(c == ESCAPE) {
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70 msg("");
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71 return FALSE;
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72 }
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73 } while (c != 'n' && c != 'y');
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74 mpos = 0;
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75 if (c == 'y')
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76 goto gotfile;
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77 }
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78 if (use_savedir) {
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79 msg("");
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80 return FALSE;
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81 }
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82 msg("File name: ");
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83 mpos = 0;
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84 buf[0] = '\0';
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85 if (get_str(buf, cw) == QUIT) {
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86 msg("");
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87 return FALSE;
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88 }
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89 msg("");
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90 strcpy(file_name, buf);
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91 gotfile:
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92 c = dosave(); /* try to save this game */
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93 if (c == FALSE)
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94 msg("Could not save game to file %s", file_name);
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95 return c;
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96 }
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97
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98 /*
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99 * auto_save:
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100 * Automatically save a game
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101 */
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102 void
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103 auto_save(int a)
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104 {
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105 dosave(); /* save this game */
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