Mercurial > hg > early-roguelike
annotate rogue5/daemons.c @ 176:db1c9a21a7c3
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 |
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date | Sun, 02 Aug 2015 12:14:47 -0400 |
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rev | line source |
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33
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1 /* |
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2 * All the daemon and fuse functions are in here |
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3 * |
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4 * @(#)daemons.c 4.24 (Berkeley) 02/05/99 |
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5 * |
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6 * Rogue: Exploring the Dungeons of Doom |
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7 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman |
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8 * All rights reserved. |
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9 * |
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10 * See the file LICENSE.TXT for full copyright and licensing information. |
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11 */ |
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12 |
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13 #include <curses.h> |
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14 #include "rogue.h" |
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15 |
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16 /* |
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17 * doctor: |
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18 * A healing daemon that restors hit points after rest |
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19 */ |
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20 void |
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21 doctor(void) |
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22 { |
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23 int lv, ohp; |
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24 |
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25 lv = pstats.s_lvl; |
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26 ohp = pstats.s_hpt; |
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27 quiet++; |
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28 if (lv < 8) |
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29 { |
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30 if (quiet + (lv << 1) > 20) |
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31 pstats.s_hpt++; |
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32 } |
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33 else |
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34 if (quiet >= 3) |
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35 pstats.s_hpt += rnd(lv - 7) + 1; |
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36 if (ISRING(LEFT, R_REGEN)) |
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37 pstats.s_hpt++; |
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38 if (ISRING(RIGHT, R_REGEN)) |
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39 pstats.s_hpt++; |
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40 if (ohp != pstats.s_hpt) |
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41 { |
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42 if (pstats.s_hpt > max_hp) |
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43 pstats.s_hpt = max_hp; |
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44 quiet = 0; |
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45 } |
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46 } |
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47 |
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48 /* |
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49 * Swander: |
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50 * Called when it is time to start rolling for wandering monsters |
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51 */ |
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52 void |
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53 swander(void) |
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54 { |
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55 start_daemon(rollwand, 0, BEFORE); |
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56 } |
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57 |
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58 /* |
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59 * rollwand: |
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60 * Called to roll to see if a wandering monster starts up |
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61 */ |
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62 |
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63 void |
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64 rollwand(void) |
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65 { |
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66 |
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67 if (++between >= 4) |
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68 { |
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69 if (roll(1, 6) == 4) |
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70 { |
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71 wanderer(); |
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72 kill_daemon(rollwand); |
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73 fuse(swander, 0, WANDERTIME, BEFORE); |
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74 } |
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75 between = 0; |
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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 * unconfuse: |
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81 * Release the poor player from his confusion |
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82 */ |
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83 void |
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84 unconfuse(void) |
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85 { |
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86 player.t_flags &= ~ISHUH; |
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87 msg("you feel less %s now", choose_str("trippy", "confused")); |
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88 } |
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89 |
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90 /* |
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91 * unsee: |
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92 * Turn off the ability to see invisible |
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93 */ |
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94 void |
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95 unsee(void) |
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96 { |
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97 THING *th; |
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98 |
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99 for (th = mlist; th != NULL; th = next(th)) |
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100 if (on(*th, ISINVIS) && see_monst(th)) |
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101 mvaddch(th->t_pos.y, th->t_pos.x, th->t_oldch); |
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102 player.t_flags &= ~CANSEE; |
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103 } |
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104 |
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105 /* |
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106 * sight: |
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107 * He gets his sight back |