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annotate rogue3/main.c @ 280:70aa5808c782

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Fix potential segfaults at restore related to ctime(). In some games, restore() passes the result of ctime() to mvprintw() or some other variadic message-formatting function. If ctime() has not been declared properly, its return type is inferred to be int instead of char *. This does not cause a warning because the compiler does not know the correct type of variadic arguments. On platforms where ints and pointers are not the same size, this can, probably depending on alignment, result in a segfault that is not easy to trace. Including time.h fixes the problem. Some games manually declared ctime() and avoided the bug. These declarations have also been replaced with the include.
author John "Elwin" Edwards
date Fri, 15 Sep 2017 20:51:10 -0400
parents 3d4252fa2ed3
children e52a8a7ad4c5
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1 /*
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2 * @(#)main.c 3.27 (Berkeley) 6/15/81
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3 *
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4 * Rogue: Exploring the Dungeons of Doom
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5 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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6 * All rights reserved.
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7 *
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8 * See the file LICENSE.TXT for full copyright and licensing information.
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9 */
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10
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11 #include "curses.h"
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12 #include <time.h>
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13 #include <signal.h>
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14 #include <limits.h>
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15 #include <stdlib.h>
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16 #include <stdarg.h>
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17 #include <string.h>
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18 #include "machdep.h"
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19 #include "rogue.h"
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20
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21 int num_checks = 0; /* times we've gone over in checkout() */
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22 WINDOW *cw; /* Window that the player sees */
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23 WINDOW *hw; /* Used for the help command */
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24 WINDOW *mw; /* Used to store mosnters */
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25 FILE *scoreboard = NULL;
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26 FILE *logfi = NULL;
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27
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e5a15b09ce1d rogue3, rogue5: fix all GCC5 warnings.
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28 int
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29 main(int argc, char *argv[], char *envp[])
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30 {
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31 char *env;
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32 struct linked_list *item;
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33 struct object *obj;
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34
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35 md_init(MD_STRIP_CTRL_KEYPAD);
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36
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37 open_score();
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38 open_log();
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39
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40 /*
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41 * check for print-score option
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42 */
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43 if (argc == 2 && strcmp(argv[1], "-s") == 0)
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44 {
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45 waswizard = TRUE;
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46 score(0, -1, 0);
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47 exit(0);
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48 }
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49
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50 #ifdef WIZARD
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51 /*
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52 * Check to see if he is a wizard
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53 */
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54 if (argc >= 2 && argv[1][0] == '\0')
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55 if (strcmp(PASSWD, crypt(md_getpass("Wizard's password: "), "mT")) == 0)
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56 {
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57 wizard = TRUE;
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58 argv++;
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59 argc--;
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60 }
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61 #endif
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62
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63 /* Are we using the system savefile directory? */
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64 #ifdef SAVEDIR
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65 if (argc >= 3 && !strcmp(argv[1], "-n"))
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66 {
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67 strncpy(whoami, argv[2], 79);
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68 whoami[79] = '\0';
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69 use_savedir = TRUE;
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70 /* look for savefile at SAVEDIR/UID-playername.r3sav */
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71 if (snprintf(file_name, 256, "%s/%d-%s.r3sav", SAVEDIR, md_getuid(), whoami) >= 256)
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72 {
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73 /* this shouldn't happen */
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74 strcpy(file_name, "rogue3.save");
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75 use_savedir = FALSE;
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76 }
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77 }
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78 #endif
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79
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80 if (use_savedir == FALSE)
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81 {
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82 md_normaluser();
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83 /* because we don't need to create a file in the common savedir,
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84 * and the scorefile is already open */
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85 strcpy(home, md_gethomedir());
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86
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87 if (strlen(home) > PATH_MAX - strlen("rogue3.save") - 1)
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88 *home = 0;
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90 strcpy(file_name, home);
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91 strcat(file_name, "rogue3.save");
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92 }
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93
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94 if ((env = getenv("ROGUEOPTS")) != NULL)
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95 parse_opts(env);
1
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96 if (!use_savedir && (env == NULL || whoami[0] == '\0'))
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97 strucpy(whoami, md_getusername(), strlen(md_getusername()));
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98 if (env == NULL || fruit[0] == '\0')