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1 /*--------------------------------------------------------------------------
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2 NETREK II -- Paradise
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3
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4 Permission to use, copy, modify, and distribute this software and its
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5 documentation, or any derivative works thereof, for any NON-COMMERCIAL
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6 purpose and without fee is hereby granted, provided that this copyright
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7 notice appear in all copies. No representations are made about the
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8 suitability of this software for any purpose. This software is provided
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9 "as is" without express or implied warranty.
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10
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11 Xtrek Copyright 1986 Chris Guthrie
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12 Netrek (Xtrek II) Copyright 1989 Kevin P. Smith
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13 Scott Silvey
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14 Paradise II (Netrek II) Copyright 1993 Larry Denys
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15 Kurt Olsen
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16 Brandon Gillespie
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17 --------------------------------------------------------------------------*/
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18
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19
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20 #include "config.h"
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21
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22 #include <stdio.h>
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23 #include <string.h>
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24 #include <time.h>
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25
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26 #include "path.h"
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27 #include "config.h"
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28
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29
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30
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31 /*--------------------------------DESCRIPTION-------------------------------
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32 This module contains the code to see if players are allowed to play
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33 depending on the time of day. This is done with a matrix that contains
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34 an element for each hour in each day of the week. If the element is zero,
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35 access is not allow. If it is not, then access is allowed. The time_access
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36 function is called to check the time and look up the time in the access
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37 matrix.
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38 Before the time_access function is called, the load_time_access function
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39 needs to be called. This function loads the access matrix from a file.
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40 The format of the file is:
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41 udfgaergfhggdfhg --These are three garbage lines
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42 sdjkhgfsadhghsdghdgh --They are ignored
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43 fjishgfsdhgdfhjghdahgdtu
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44 SUN 0 0 0 0 1 1 1 ... --name of day followed by 24 0's or 1's
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45 MON 0 1 1 1 1 ... -- 0 = closed 1 = open
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46 The time_access function checks the time access matrix to see if access
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47 should be allowed. The function makes a provision for overriding the
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48 access matrix. If the file OVERRIDE exists, then access is automaticly
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49 allowed. If the file DENY exists then access is disallowed. If they both
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50 exists then access is allowed.
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51 ---------------------------------------------------------------------------*/
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52
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53
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54
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55
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56
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57
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58
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59 /*-------------------------------NUMBER DEFINES----------------------------*/
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60 #define HOURS "etc/conf.hours"
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61 #define OVERRIDE "etc/ALLOW"
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62 #define DENY "etc/DENY"
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63 /*------------------------------------------------------------------------*/
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64
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65
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66
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67
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68
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69
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70
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71 /*-------------------------------MODULE VARIABLES--------------------------*/
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72
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73 /*
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74 * The access matrix that is looked up to see if the server is open. 0 =
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75 * closed 1 = open
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76 */
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77 int timematrix[7][24];
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78
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79 /*-------------------------------------------------------------------------*/
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80
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81
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82
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83
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84
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85
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86 /*------------------------------VISIBLE FUNCTIONS--------------------------*/
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87
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88 /*---------------------------------LOAD_TIME_ACCESS------------------------*/
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89 /*
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90 * This function loads the time access matrix from the time access file. If
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91 * the file cannot be opened, a warning is printed out and the access matrix
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92 * is filled with 1's, allowing access at all times.
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93 */
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94
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95
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96 extern int fclose();
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97 #ifndef IRIX
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98 extern int fscanf();
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99 extern int fprintf();
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100 #endif
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101 extern time_t time();
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102
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103 void
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104 load_time_access()
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105 {
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106 FILE *f; /* to open time access file with */
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107 char *filename; /* to hold full path plus filename */
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108 int i, j; /* looping vars */
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109
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110 filename = build_path(HOURS);
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111
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112 if ((f = fopen(filename, "r")) != NULL)
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113 { /* file opened correctly? */
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114 fgets(filename, 256, f); /* get rid of first three lines */
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115 fgets(filename, 256, f);
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116 fgets(filename, 256, f);
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117 for (i = 0; i < 7; i++)
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118 { /* go through each day */
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119 fscanf(f, "%s", filename);/* get day name */
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120 for (j = 0; j < 24; j++) /* go through each hour */
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121 fscanf(f, "%d", &(timematrix[i][j])); /* get access for that hour */
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122 }
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123 fclose(f); /* clsoe time access file */
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124 }
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125 else
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126 { /* else no timecheck file */
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127 fprintf(stderr, "Warning, no .hours file found.");
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128 fprintf(stderr, " Allowing access at all hours, all days.\n");
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129 for (i = 0; i < 7; i++) /* go through all days */
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130 for (j = 0; j < 24; j++) /* go through all hours */
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131 timematrix[i][j] = 1; /* set access okay at this day,hour */
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132 }
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133 }
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134
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135
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136
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137
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138 /*---------------------------------TIME_ACCESS-----------------------------*/
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139 /*
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140 * This function checks to see if the server is open. It returns a 1 if the
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141 * server is open at the current time of day and day of the week. It returns
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142 * a 0 otherwise.
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143 */
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144
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145 int
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146 time_access()
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147 {
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148 struct tm *tm; /* points to structure containing local time */
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149 time_t secs; /* to get number of seconds */
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150 FILE *fd; /* to open override file with */
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151 char *filename; /* to hold full path and filename */
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152
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153 filename = build_path(OVERRIDE);
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154 if ((fd = fopen(filename, "r")) != NULL)
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155 { /* if override open file */
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156 fclose(fd); /* exists then */
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157 return 1; /* return server is open */
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158 }
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159 filename = build_path(DENY);
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160 if ((fd = fopen(filename, "r")) != NULL)
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161 { /* if override close file */
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162 fclose(fd); /* exists then */
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163 return 0; /* return server is closed */
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164 }
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165 time(&secs); /* get calendar time */
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166 tm = localtime(&secs); /* convert it to local time */
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167 return (timematrix[tm->tm_wday][tm->tm_hour]); /* check time access
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168 * matrix */
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169 }
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170
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171 /*------------------------------------------------------------------------*/
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172
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173
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174
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175
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176
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177 /*--------END OF FILE----------*/
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