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annotate arogue5/rip.c @ 176:db1c9a21a7c3

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srogue: prevent overflowing the score file name. If SCOREFILE is not defined, roguehome() is called to find a directory for the score file. It copies up to PATH_MAX-20 bytes from an environment variable to a static buffer. Later these are strcpy()'d to scorefile, which is of size LINLEN. Unfortunately LINLEN is 80 and PATH_MAX is at least 256. On Linux, it happens to be 4096. I haven't yet managed to crash or exploit it, but there are surely no beneficial consequences, so roguehome() has been modified to check the length, and the string it returns is also checked in main().
author John "Elwin" Edwards
date Sun, 02 Aug 2015 12:14:47 -0400
parents 7faf4568c295
children 80a590e67206
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1 /*
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2 * File for the fun ends
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3 * Death or a total win
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4 *
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5 * Advanced Rogue
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6 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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7 * All rights reserved.
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8 *
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9 * Based on "Rogue: Exploring the Dungeons of Doom"
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10 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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11 * All rights reserved.
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12 *
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13 * See the file LICENSE.TXT for full copyright and licensing information.
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14 */
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15
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16 /* Print flags for scoring */
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17 #define REALLIFE 1 /* Print out machine and logname */
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18 #define EDITSCORE 2 /* Edit the current score file */
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19 #define ADDSCORE 3 /* Add a new score */
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20
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21 #include <fcntl.h>
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22 #include <stdio.h>
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23 #include <stdlib.h>
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c49f7927b0fa arogue5: add missing header files.
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24 #include <string.h>
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25 #include "curses.h"
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26 #include <time.h>
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27 #include <signal.h>
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28 #include <ctype.h>
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29 #include <sys/types.h>
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30 #include "network.h"
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31 #include "rogue.h"
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32 #include "mach_dep.h"
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33
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34 /*
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35 * If you change this structure, change the compatibility routines
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36 * scoreout() and scorein() to reflect the change. Also update SCORELEN.
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37 */
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38
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39 extern int scorefd;
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40 extern FILE *logfile;
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41
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42 struct sc_ent {
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43 unsigned long sc_score;
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44 char sc_name[LINELEN];
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45 char sc_system[SYSLEN];
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46 char sc_login[LOGLEN];
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47 short sc_flgs;
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48 short sc_level;
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49 short sc_ctype;
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50 short sc_monster;
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51 short sc_quest;
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52 };
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53
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54 #define SCORELEN \
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55 (sizeof(unsigned long) + LINELEN + SYSLEN + LOGLEN + 5*sizeof(short))
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56
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57 static char *rip[] = {
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58 " __________",
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59 " / \\",
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60 " / REST \\",
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61 " / IN \\",
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62 " / PEACE \\",
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63 " / \\",
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64 " | |",
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65 " | |",
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66 " | killed by |",
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67 " | |",
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68 " | 1984 |",
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69 " *| * * * | *",
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70 " ________)/\\\\_//(\\/(/\\)/\\//\\/|_)_______",
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71 0
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72 };
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73
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74 char *killname();
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75
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76
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77
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78
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79
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80 void
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81 byebye(sig)
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82 int sig;
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83 {
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84 NOOP(sig);
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85 if (!isendwin()) {
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86 clear();
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87 endwin();
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88 }
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89 printf("\n");
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90 exit(0);
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91 }
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92
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93
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94 /*
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95 * death:
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96 * Do something really fun when he dies
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97 */
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98
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99 death(monst)
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100 register short monst;
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101 {
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102 register char **dp = rip, *killer;
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103 register struct tm *lt;
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104 time_t date;
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