Mercurial > hg > early-roguelike
annotate rogue5/main.c @ 83:09db0cf536af
Properly handle invalid room references in savefiles.
In all games, rs_write_room_reference() stored -1 for a nonexistent
room, but rs_read_room_reference() did not check for out-of-bounds
values, leading to pointers to rooms[-1], which sometimes caused
crashes. rs_read_room_reference() has now been modified to use NULL
instead.
Some of the games required further changes to replace NULL with the
pointer to the actual room. Others are capable of handling NULL for
objects not in any room.
author | John "Elwin" Edwards |
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date | Thu, 08 Aug 2013 12:41:35 -0700 |
parents | 24e6beb9e7aa |
children | ee250e3646fd |
rev | line source |
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33
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1 /* |
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2 * Rogue: Exploring the Dungeons of Doom |
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3 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman |
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4 * All rights reserved. |
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5 * |
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6 * See the file LICENSE.TXT for full copyright and licensing information. |
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7 * |
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8 * @(#)main.c 4.22 (Berkeley) 02/05/99 |
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9 */ |
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10 |
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11 #include <stdlib.h> |
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12 #include <string.h> |
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13 #include <signal.h> |
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14 #include <time.h> |
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15 #include <curses.h> |
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16 #include "rogue.h" |
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17 |
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18 /* |
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19 * main: |
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20 * The main program, of course |
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21 */ |
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22 int |
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23 main(int argc, char **argv) |
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24 { |
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25 char *env; |
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26 time_t lowtime; |
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27 |
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28 md_init(); |
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29 |
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30 #ifdef MASTER |
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31 /* |
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32 * Check to see if he is a wizard |
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33 */ |
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34 if (argc >= 2 && argv[1][0] == '\0') |
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35 if (strcmp(PASSWD, md_crypt(md_getpass("wizard's password: "), "mT")) == 0) |
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36 { |
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37 wizard = TRUE; |
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38 player.t_flags |= SEEMONST; |
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39 argv++; |
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40 argc--; |
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41 } |
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42 |
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43 #endif |
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44 |
34 | 45 /* Check to see if savefiles should be stored in the system location */ |
46 #ifdef SAVEDIR | |
47 if (argc >= 3 && !strcmp(argv[1], "-n")) | |
48 { | |
49 use_savedir = TRUE; | |
50 strncpy(whoami, argv[2], MAXSTR); | |
51 whoami[MAXSTR-1] = '\0'; | |
52 snprintf(file_name, MAXSTR, "%s/%d-%.10s.r5sav", SAVEDIR, | |
53 md_getuid(), whoami); | |
54 } | |
55 #endif | |
56 | |
57 open_score(); | |
58 open_log(); | |
59 | |
33
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60 /* |
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61 * get home and options from environment |
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62 */ |
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63 |
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64 strcpy(home, md_gethomedir()); |
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65 |
34 | 66 if (strlen(home) > MAXSTR - strlen("rogue5.save") - 1) |
33
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67 *home = 0; |
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68 |
34 | 69 if (!use_savedir) |
70 { | |
71 md_normaluser(); | |
72 strcpy(file_name, home); | |
73 strcat(file_name, "rogue5.save"); | |
74 } | |
33
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75 |
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76 if ((env = getenv("ROGUEOPTS")) != NULL) |
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77 parse_opts(env); |
34 | 78 if (!use_savedir && (env == NULL || whoami[0] == '\0')) |
33
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79 strucpy(whoami, md_getusername(), strlen(md_getusername())); |
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80 lowtime = time(NULL); |
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81 if (getenv("SEED") != NULL) |
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82 { |
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83 dnum = atoi(getenv("SEED")); |
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84 noscore = 1; |
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85 } |
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86 else |
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87 dnum = (unsigned int) lowtime + md_getpid(); |
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88 seed = dnum; |
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89 |
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90 /* |
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91 * check for print-score option |
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92 */ |
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93 |
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94 if (argc == 2) |
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95 { |
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96 if (strcmp(argv[1], "-s") == 0) |
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97 { |
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98 noscore = TRUE; |
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99 score(0, -1, 0); |
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100 exit(0); |
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101 } |
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102 else if (strcmp(argv[1], "-d") == 0) |
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103 { |
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104 dnum = rnd(100); /* throw away some rnd()s to break patterns */ |
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