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annotate arogue7/main.c @ 144:708bb2dea17c

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arogue7, xrogue: prevent potential NULL dereferencing. It is possible for getpwuid() to fail and return NULL. Various md_get* functions now check for this.
author John "Elwin" Edwards
date Mon, 18 May 2015 10:53:22 -0400
parents 7faf4568c295
children aac28331e71d
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1 /*
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2 * main.c - setup code
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985, 1986 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 #include "curses.h"
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16 #include <stdlib.h>
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17 #include <string.h>
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18 #include <signal.h>
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19 #include <sys/types.h>
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20 #include <fcntl.h>
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21 #ifdef BSD
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22 #include <sys/time.h>
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23 #else
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24 #include <time.h>
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25 #endif
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26 #include "mach_dep.h"
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27 #include "network.h"
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28 #include "rogue.h"
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29 #ifdef PC7300
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30 #include "sys/window.h"
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31 #include <ctype.h>
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32 extern struct uwdata wdata, oldwin;
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33 extern char oldtext[WTXTNUM][WTXTLEN];
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34 #endif
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35
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36 int scorefd = -1;
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37 FILE *logfile = NULL;
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38 void open_records(void);
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39
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40 main(argc, argv, envp)
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41 char **argv;
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42 char **envp;
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43 {
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44 register char *env;
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45 int lowtime;
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46 time_t now;
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47 #ifdef PC7300
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48 int hardwindow; /* Do we have a hardware window? */
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49 #endif
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50
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51 md_init();
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52
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53 /*
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54 * get home and options from environment
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55 */
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56
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57 strncpy(home, md_gethomedir(), LINELEN);
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58
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59 /* Get default save file */
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60 strcpy(file_name, home);
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61 strcat(file_name, "arogue77.sav");
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62
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63 /* Get default score file */
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64 #ifdef SCOREFILE
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65 strncpy(score_file, SCOREFILE, LINELEN);
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66 score_file[LINELEN-1] = '\0';
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67 #else
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68 strcpy(score_file, md_getroguedir());
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69
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70 if (*score_file)
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71 strcat(score_file,"/");
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72
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73 strcat(score_file,"arogue77.scr");
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74 #endif
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75
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76 #ifdef SAVEDIR
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77 /* Check for common save location */
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78 if (argc >= 3 && strcmp(argv[1], "-n") == 0)
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79 {
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80 strncpy(whoami, argv[2], 79);
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81 whoami[79] = '\0';
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82 use_savedir = TRUE;
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83 if (LINELEN <= snprintf(file_name, LINELEN, "%s/%d-%s.ar7sav", SAVEDIR,
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84 md_getuid(), whoami))
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85 {
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86 strcpy(file_name, "xrogue.sav");
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87 use_savedir = FALSE;
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88 }
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89 }
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