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annotate xrogue/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 5a77931393f4
children f54901b9c39b
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1 /*
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2 rip.c - File for the fun ends Death or a total win
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3
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4 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #define REALLIFE 1 /* Print out machine and logname */
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20 #define EDITSCORE 2 /* Edit the current score file */
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21 #define ADDSCORE 3 /* Add a new score */
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22
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23 #include <curses.h>
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24 #include <time.h>
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25 #include <signal.h>
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26 #include <ctype.h>
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27 #include <string.h>
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28 #include <sys/types.h>
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29 #include <fcntl.h>
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30 #include "mach_dep.h"
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31 #include "network.h"
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32 #include "rogue.h"
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33
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34 /* Network machines (for mutual score keeping) */
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35 struct network Network[] = {
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36 { "", "" },
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37 };
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38
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39 static char *rip[] = {
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40 " ___________",
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41 " / \\",
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42 " / \\",
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43 " / R. I. P. \\",
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44 " / \\",
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45 " / \\",
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46 " | |",
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47 " | |",
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48 " | killed by |",
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49 " | |",
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50 " | |",
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51 " | |",
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52 " *| * * * |*",
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53 " _________)|//\\\\///\\///\\//\\//\\/|(_________",
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54 NULL
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55 };
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56
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57 char *killname();
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58
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59 extern FILE *scorefi, *logfile;
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60
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61 /*UNUSED*/
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62 void
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63 byebye(sig)
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64 int sig;
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65 {
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66 NOOP(sig);
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67 exit_game(EXIT_ENDWIN);
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68 }
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69
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70
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71 /*
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72 * death:
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73 * Do something really fun when he dies
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74 */
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75
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76 death(monst)
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77 register short monst;
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78 {
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79 register char **dp = rip, *killer;
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80 register struct tm *lt;
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81 time_t date;
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82 char buf[LINELEN];
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83 struct tm *localtime();
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84
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85 writelog(pstats.s_exp, KILLED, monst);
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86 time(&date);
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87 lt = localtime(&date);
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88 clear();
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89 move(8, 0);
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90 while (*dp)
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91 printw("%s\n", *dp++);
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92 mvaddstr(14, 28-((strlen(whoami)+1)/2), whoami);
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