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annotate arogue5/save.c @ 66:c56f672244f4

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arogue5: close security holes. Prevent whoami (player name), file_name, and score_file from being changed if the systemwide save location is being used.
author elwin
date Sat, 11 Aug 2012 16:27:20 +0000
parents a98834ce7e04
children c49f7927b0fa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490)
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1 /*
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2 * save and restore routines
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985 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 <fcntl.h>
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17 #include <errno.h>
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18 #include <ctype.h>
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19 #include <sys/types.h>
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20 #include <sys/stat.h>
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21 #include <signal.h>
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22 #include "rogue.h"
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23
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24 typedef struct stat STAT;
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25
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26 extern char version[], encstr[];
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27 /* extern bool _endwin; */
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28
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29 STAT sbuf;
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30
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31 bool
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32 save_game()
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33 {
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34 register FILE *savef;
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35 register int c;
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36 char buf[LINELEN];
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37
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38 /*
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39 * get file name
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40 */
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41 mpos = 0;
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42 if (file_name[0] != '\0')
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43 {
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44 if (use_savedir)
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45 msg("Save game? ");
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46 else
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47 msg("Save file (%s)? ", file_name);
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48 do
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49 {
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50 c = readchar();
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51 if (c == ESCAPE) return(0);
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52 } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y');
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53 mpos = 0;
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54 if (c == 'y' || c == 'Y')
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55 {
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56 msg("File name: %s", file_name);
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57 goto gotfile;
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58 }
66
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59 if (use_savedir) {
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60 msg("");
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61 return FALSE;
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62 }
63
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63 }
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64
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65 do
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66 {
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67 msg("File name: ");
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68 mpos = 0;
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69 buf[0] = '\0';
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70 if (get_str(buf, cw) == QUIT)
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71 {
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72 msg("");
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73 return FALSE;
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74 }
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75 msg("");
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76 strcpy(file_name, buf);
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77 gotfile:
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78 if ((savef = fopen(file_name, "w")) == NULL)
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79 {
63
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80 msg(strerror(errno)); /* fake perror() */
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81 if (use_savedir)
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82 return FALSE;
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83 }
63
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84 } while (savef == NULL);
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85
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86 /*
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87 * write out encrpyted file (after a stat)
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88 * The fwrite is to force allocation of the buffer before the write
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89 */
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90 if (save_file(savef) != 0) {
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91 msg("Cannot create save file.");
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92 unlink(file_name);
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93 return(FALSE);
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94 }
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95 else return(TRUE);
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96 }
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97
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98 /*
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99 * automatically save a file. This is used if a HUP signal is
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100 * recieved
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101 */
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102 void
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103 auto_save(int sig)
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104 {
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