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annotate srogue/state.c @ 173:78fa1d0e5d25

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srogue: open the score and log files when the program starts. Super-Rogue can now use the same privilege-dropping scheme as the other games.
author John "Elwin" Edwards
date Sat, 01 Aug 2015 15:12:11 -0400
parents 09db0cf536af
children 94a0d9dd5ce1
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1 /*
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2 state.c - Portable Rogue Save State Code
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3
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4 Copyright (C) 1999, 2000, 2005 Nicholas J. Kisseberth
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5
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6 Redistribution and use in source and binary forms, with or without
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7 modification, are permitted provided that the following conditions
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8 are met:
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9 1. Redistributions of source code must retain the above copyright
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10 notice, this list of conditions and the following disclaimer.
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11 2. Redistributions in binary form must reproduce the above copyright
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12 notice, this list of conditions and the following disclaimer in the
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13 documentation and/or other materials provided with the distribution.
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14 3. Neither the name(s) of the author(s) nor the names of other contributors
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15 may be used to endorse or promote products derived from this software
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16 without specific prior written permission.
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17
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18 THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
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19 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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20 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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21 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
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22 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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23 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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24 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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25 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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27 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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28 SUCH DAMAGE.
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29 */
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30
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31 /************************************************************************/
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32 /* Save State Code */
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33 /************************************************************************/
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34
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35 #define RSID_STATS 0xABCD0001
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36 #define RSID_THING 0xABCD0002
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37 #define RSID_THING_NULL 0xDEAD0002
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38 #define RSID_OBJECT 0xABCD0003
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39 #define RSID_MAGICITEMS 0xABCD0004
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40 #define RSID_KNOWS 0xABCD0005
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41 #define RSID_GUESSES 0xABCD0006
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42 #define RSID_OBJECTLIST 0xABCD0007
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43 #define RSID_BAGOBJECT 0xABCD0008
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44 #define RSID_MONSTERLIST 0xABCD0009
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45 #define RSID_MONSTERSTATS 0xABCD000A
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46 #define RSID_MONSTERS 0xABCD000B
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47 #define RSID_TRAP 0xABCD000C
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48 #define RSID_WINDOW 0xABCD000D
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49 #define RSID_DAEMONS 0xABCD000E
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50 #define RSID_IWEAPS 0xABCD000F
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51 #define RSID_IARMOR 0xABCD0010
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52 #define RSID_SPELLS 0xABCD0011
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53 #define RSID_ILIST 0xABCD0012
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54 #define RSID_HLIST 0xABCD0013
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55 #define RSID_DEATHTYPE 0xABCD0014
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56 #define RSID_CTYPES 0XABCD0015
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57 #define RSID_COORDLIST 0XABCD0016
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58 #define RSID_ROOMS 0XABCD0017
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59
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60
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61 #include <curses.h>
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62 #include <sys/stat.h>
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63 #include <stdio.h>
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64 #include <stdlib.h>
60
3aa87373c908 srogue: include missing headers.
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65 #include <string.h>
36
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66 #include <assert.h>
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67 #include "rogue.h"
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68 #include "rogue.ext"
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69
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70 #define READSTAT ((format_error == 0) && (read_error == 0))
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71 #define WRITESTAT (write_error == 0)
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72
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73 int read_error = FALSE;
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74 int write_error = FALSE;
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75 int format_error = FALSE;
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76 int end_of_file = FALSE;
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77 int big_endian = 0;
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78 const char *fmterr = "";
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79
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80 char encstr[] = "\354\251\243\332A\201|\301\321p\210\251\327\"\257\365t\341%3\271^`~\203z{\341};\f\341\231\222e\234\351]\321";
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81
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82 /*
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83 * perform an encrypted write
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84 */
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85 encwrite(starta, size, outf)
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86 register void *starta;
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87 unsigned int size;
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88 register FILE *outf;
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89 {
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90 register char *ep;
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91 register char *start = starta;
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92
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93 ep = encstr;
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94
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95 while (size--)
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96 {
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97 putc(*start++ ^ *ep++, outf);
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98 if (*ep == '\0')
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99 ep = encstr;
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100 }
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101 }
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102
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103 /*
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104 * perform an encrypted read