Mercurial > hg > early-roguelike
annotate xrogue/save.c @ 280:70aa5808c782
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 |
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date | Fri, 15 Sep 2017 20:51:10 -0400 |
parents | d3968e9cb98d |
children |
rev | line source |
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133
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1 /* |
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2 save.c - save and restore routines |
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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 #include <curses.h> |
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20 #include <ctype.h> |
135 | 21 #include <string.h> |
205 | 22 #include <stdlib.h> |
133
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23 #include <sys/types.h> |
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24 #include <signal.h> |
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25 #include <fcntl.h> |
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26 #include <errno.h> |
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27 #include "rogue.h" |
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28 #include "mach_dep.h" |
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29 |
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30 extern char version[]; |
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31 extern unsigned char encstr[]; |
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32 extern int big_endian; |
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33 |
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34 bool rs_write_int(FILE *savef, int c); |
279
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35 bool rs_read_int(FILE *inf, int *i); |
220
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36 bool rs_save_file(FILE *savef); |
279
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37 bool rs_restore_file(FILE *inf); |
220
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38 |
206
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39 int md_unlink(char *file); |
220
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40 bool save_file(FILE *savef); |
206
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41 |
133
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42 bool |
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43 save_game(void) |
133
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44 { |
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45 register FILE *savef; |
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46 register int c; |
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47 char buf[LINELEN]; |
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48 |
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49 /* |
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50 * get file name |
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51 */ |
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52 mpos = 0; |
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53 if (file_name[0] != '\0') |
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54 { |
137
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55 if (use_savedir) |
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56 msg("Save game? "); |
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57 else |
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58 msg("Save file (%s)? ", file_name); |
133
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59 do |
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60 { |
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61 c = wgetch(cw); |
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62 if (c == ESC) return(0); |
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63 } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y'); |
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64 mpos = 0; |
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65 if (c == 'y' || c == 'Y') |
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66 { |
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67 msg("File name: %s", file_name); |
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68 goto gotfile; |
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69 } |
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70 } |
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71 else |
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72 goto gotfile; /* must save to file restored from */ |
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73 |
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74 if (use_savedir) { |
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75 msg(""); |
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76 return FALSE; |
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77 } |
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78 |
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79 do |
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80 { |
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81 msg("File name: "); |
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82 mpos = 0; |
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83 buf[0] = '\0'; |
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84 if (get_str(buf, msgw) == QUIT) |
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85 { |
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86 msg(""); |
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87 return FALSE; |
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88 } |
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89 strcpy(file_name, buf); |
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90 gotfile: |
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91 |
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92 if ((savef = fopen(file_name, "wb")) == NULL) { |
133
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93 msg(strerror(errno)); |
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94 if (use_savedir) |
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95 return FALSE; |
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96 } |
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97 } while (savef == NULL); |
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98 |
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99 msg(""); |
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100 /* |
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101 * write out encrpyted file |
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102 */ |
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103 if (save_file(savef) == FALSE) { |
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104 fclose(savef); |
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105 msg("Cannot create save file."); |
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106 md_unlink(file_name); |
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107 return(FALSE); |
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108 } |
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109 fclose(savef); |
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110 return(TRUE); |
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111 } |
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112 |
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113 /* |
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114 * automatically save a file. This is used if a HUP signal is recieved |
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115 */ |
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116 |
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117 void |
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118 auto_save(int sig) |
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119 { |
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120 register FILE *savef = NULL; |
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121 register int i; |
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122 NOOP(sig); |
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123 for (i = 0; i < NSIG; i++) |
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124 signal(i, SIG_IGN); |
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125 if (file_name[0] != '\0' && |
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126 pstats.s_hpt > 0 && |
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127 ((savef = fopen(file_name, "wb")) != NULL)) |
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128 save_file(savef); |
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129 fclose(savef); |
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130 exit_game(EXIT_ENDWIN); |
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diff
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|
131 } |
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parents:
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|
132 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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133 /* |
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|
134 * write the saved game on the file |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
135 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
136 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
137 bool |
220
f54901b9c39b
XRogue: convert to ANSI-style function declarations.
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206
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138 save_file(FILE *savef) |
133
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139 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
140 int slines = LINES; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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141 int scols = COLS; |
220
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206
diff
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142 bool ret = FALSE; |
133
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143 int endian = 0x01020304; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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144 big_endian = ( *((char *)&endian) == 0x01 ); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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145 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
changeset
|
146 wmove(cw, LINES-1, 0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
147 draw(cw); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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148 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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changeset
|
149 encwrite(version,strlen(version)+1,savef); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
150 rs_write_int(savef,slines); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
151 rs_write_int(savef,scols); |
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152 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
153 ret = rs_save_file(savef); |
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154 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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|
155 return(ret); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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|
156 } |
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157 |
220
f54901b9c39b
XRogue: convert to ANSI-style function declarations.
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206
diff
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|
158 bool |
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206
diff
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159 restore(char *file, char *envp[]) |
133
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160 { |
279
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Use C stdio functions for score files and save files.
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220
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161 FILE *inf; |
133
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162 extern char **environ; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
163 char buf[LINELEN]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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164 int endian = 0x01020304; |
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165 big_endian = ( *((char *)&endian) == 0x01 ); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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166 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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167 if (strcmp(file, "-r") == 0) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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168 file = file_name; |
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169 |
279
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220
diff
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170 if ((inf = fopen(file, "r")) == NULL) |
133
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171 { |
136
1fbdefa82533
xrogue: initial support for the -n option.
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135
diff
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|
172 if (use_savedir && errno == ENOENT) |
1fbdefa82533
xrogue: initial support for the -n option.
John "Elwin" Edwards
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135
diff
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|
173 { |
1fbdefa82533
xrogue: initial support for the -n option.
John "Elwin" Edwards
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135
diff
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|
174 /* No game in progress, so one will be started. */ |
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xrogue: initial support for the -n option.
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135
diff
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|
175 return TRUE; |
1fbdefa82533
xrogue: initial support for the -n option.
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135
diff
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|
176 } |
133
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|
177 perror(file); |
136
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xrogue: initial support for the -n option.
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135
diff
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|
178 return FALSE; |
133
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|
179 } |
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|
180 |
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|
181 fflush(stdout); |
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diff
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|
182 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
183 encread(buf, strlen(version) + 1, inf); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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184 |
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185 if (strcmp(buf, version) != 0) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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186 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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|
187 printf("Sorry, saved game is out of date.\n"); |
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|
188 return FALSE; |
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parents:
diff
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|
189 } |
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diff
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|
190 |
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diff
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|
191 fflush(stdout); |
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|
192 |
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|
193 rs_read_int(inf,&lines); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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|
194 rs_read_int(inf,&cols); |
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195 |
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|
196 initscr(); |
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|
197 |
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|
198 if (lines > LINES) |
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diff
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|
199 { |
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parents:
diff
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|
200 endwin(); |
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parents:
diff
changeset
|
201 printf("Sorry, original game was played on a screen with %d lines.\n",lines); |
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202 printf("Current screen only has %d lines. Unable to restore game\n",LINES); |
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203 return(FALSE); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
204 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
205 if (cols > COLS) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
206 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
207 endwin(); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
208 printf("Sorry, original game was played on a screen with %d columns.\n",cols); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
209 printf("Current screen only has %d columns. Unable to restore game\n",COLS); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
210 return(FALSE); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
211 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
212 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
213 typeahead(-1); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
214 setup(); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
215 cw = newwin(LINES, COLS, 0, 0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
216 mw = newwin(LINES, COLS, 0, 0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
217 hw = newwin(LINES, COLS, 0, 0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
218 msgw = newwin(4, cols, 0, 0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
219 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
220 keypad(cw, TRUE); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
221 keypad(hw, TRUE); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
222 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
223 if (rs_restore_file(inf) == FALSE) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
224 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
225 endwin(); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
226 printf("Cannot restore file\n"); |
279
d3968e9cb98d
Use C stdio functions for score files and save files.
John "Elwin" Edwards
parents:
220
diff
changeset
|
227 fclose(inf); |
133
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
228 return(FALSE); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
229 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
230 |
279
d3968e9cb98d
Use C stdio functions for score files and save files.
John "Elwin" Edwards
parents:
220
diff
changeset
|
231 fclose(inf); |
133
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
232 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
233 if (!wizard) |
206
a3d90e31a001
XRogue: add and use more md_ functions.
John "Elwin" Edwards
parents:
205
diff
changeset
|
234 md_unlink(file); |
133
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
235 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
236 mpos = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
237 environ = envp; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
238 strcpy(file_name, file); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
239 clearok(curscr, TRUE); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
240 touchwin(cw); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
241 wrefresh(cw); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
242 msg("Welcome back! --More-- "); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
243 wait_for(' '); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
244 msg(""); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
245 playit(); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
246 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
247 /*NOTREACHED*/ |
136
1fbdefa82533
xrogue: initial support for the -n option.
John "Elwin" Edwards
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135
diff
changeset
|
248 return FALSE; |
133
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
249 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
250 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
251 #define ENCWBSIZ 1024 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
252 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
253 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
254 * perform an encrypted write |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
255 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
256 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
257 long |
220
f54901b9c39b
XRogue: convert to ANSI-style function declarations.
John "Elwin" Edwards
parents:
206
diff
changeset
|
258 encwrite(char *start, unsigned long size, FILE *outf) |
133
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
259 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
260 register unsigned char *ep; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
261 register int i = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
262 unsigned long num_written = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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263 char buf[ENCWBSIZ]; |
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264 int ret; |
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265 |
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266 ep = encstr; |
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267 |
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268 while (size--) |
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269 { |
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270 buf[i++] = *start++ ^ *ep++; |
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271 if (*ep == '\0') |
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272 ep = encstr; |
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273 |
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274 if (i == ENCWBSIZ || size == 0) |
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275 { |
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276 ret = (unsigned int) fwrite(buf, 1, i, outf); |
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277 if (ret > 0) |
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278 num_written += ret; |
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279 |
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280 if (ret < i) |
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281 return(num_written); |
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282 |
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283 i = 0; |
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284 } |
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285 } |
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286 return(num_written); |
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287 } |
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288 |
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289 #define ENCRBSIZ 32768 |
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290 |
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291 /* |
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292 * perform an encrypted read |
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293 */ |
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294 |
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295 long |
279
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296 encread(char *start, unsigned long size, FILE *inf) |
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297 { |
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298 register unsigned char *ep; |
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299 register int rd_siz; |
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300 register unsigned long total_read; |
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301 |
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302 total_read = 0; |
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303 while (total_read < size) { |
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304 rd_siz = ENCRBSIZ; |
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305 rd_siz = ((size-total_read) > ENCRBSIZ) ? ENCRBSIZ : (size-total_read); |
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306 rd_siz = fread(&start[total_read], 1, rd_siz, inf); |
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307 if(rd_siz==0) |
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308 break; |
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309 total_read += rd_siz; |
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310 } |
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311 ep = encstr; |
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312 |
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313 size = total_read; |
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314 while (size--) |
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315 { |
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316 *start++ ^= *ep++; |
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317 if (*ep == '\0') |
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318 ep = encstr; |
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319 } |
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320 return total_read; |
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321 } |
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322 |