src/server.c

Tue, 28 Aug 2018 15:56:33 +0200

author
Mike Becker <universe@uap-core.de>
date
Tue, 28 Aug 2018 15:56:33 +0200
changeset 62
564af8a16828
parent 60
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child 64
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permissions
-rw-r--r--

fixes move validation working on old king's position, when the king moves

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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54ea19938d57 updated copyright and version info
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4 * Copyright 2016 Mike Becker. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 *
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28 */
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29
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30 #include "terminal-chess.h"
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31 #include "game.h"
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32 #include <ncurses.h>
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33 #include <errno.h>
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34 #include <string.h>
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35
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36 static int server_open(Server *server, char *port) {
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37 printw("\nListening for client...\n");
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38 refresh();
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39 if (net_create(server, port)) {
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40 addstr("Server creation failed");
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41 return 1;
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42 }
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43
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44 if (net_listen(server)) {
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45 addstr("Listening for client failed");
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46 return 1;
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47 }
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48
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49 return 0;
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50 }
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51
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52 static int server_handshake(Client *client) {
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53 net_send_code(client->fd, NETCODE_VERSION);
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54 if (net_recieve_code(client->fd) != NETCODE_VERSION) {
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55 addstr("Client uses an incompatible software version.");
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56 return 1;
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57 }
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58
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59 addstr("Client connected - transmitting gameinfo...");
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60 refresh();
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61
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62 return 0;
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63 }
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64
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65 int server_run(Settings *settings) {
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66 Server server;
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67
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68 dump_gameinfo(&(settings->gameinfo));
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69 GameState continuegame;
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70 gamestate_init(&continuegame);
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71 if (settings->continuepgn) {
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72 // preload PGN data before handshake
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73 FILE *pgnfile = fopen(settings->continuepgn, "r");
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74 if (pgnfile) {
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75 int result = read_pgn(pgnfile, &continuegame,
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76 &(settings->gameinfo));
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77 long position = ftell(pgnfile);
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78 fclose(pgnfile);
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79 if (result) {
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80 printw("Invalid PGN file content at position %ld:\n%s\n",
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81 position, pgn_error_str(result));
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82 return 1;
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83 }
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84 if (!is_game_running(&continuegame)) {
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85 addstr("Game has ended. Use -S to analyze it.\n");
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86 return 1;
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87 }
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88 addch('\n');
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89 dump_moveinfo(&continuegame);
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90 addch('\n');
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91 } else {
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92 printw("Can't read PGN file (%s)\n", strerror(errno));
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93 return 1;
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94 }
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95 }
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96
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97 if (server_open(&server, settings->port)) {
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98 net_destroy(&server);
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99 return 1;
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100 }
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101
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102 if (server_handshake(server.client)) {
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103 net_destroy(&server);
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104 return 1;
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105 }
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106
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107 int fd = server.client->fd;
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108 if (settings->continuepgn) {
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109 // Continue game, send PGN data
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110 uint16_t mc = 0;
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111 MoveList *movelist = continuegame.movelist;
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112 while (movelist) {
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113 mc++;
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114 movelist = movelist->next;
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115 }
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116
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117 Move* moves = calloc(mc, sizeof(Move));
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118
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119 movelist = continuegame.movelist;
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120 mc = 0;
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121 while (movelist) {
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122 moves[mc] = movelist->move;
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123 mc++;
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124 movelist = movelist->next;
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125 }
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126
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127 size_t pgndata_size = sizeof(GameInfo)+sizeof(mc)+mc*sizeof(Move);
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128 char *pgndata = malloc(pgndata_size);
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129 memcpy(pgndata, &(settings->gameinfo), sizeof(GameInfo));
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130 memcpy(pgndata+sizeof(GameInfo), &mc, sizeof(mc));
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131 memcpy(pgndata+sizeof(GameInfo)+sizeof(mc), moves, mc*sizeof(Move));
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132 free(moves);
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133 net_send_data(fd, NETCODE_PGNDATA, pgndata, pgndata_size);
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134 free(pgndata);
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135 } else {
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136 // Start new game
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137 net_send_data(fd, NETCODE_GAMEINFO,
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138 &(settings->gameinfo), sizeof(GameInfo));
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139 }
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140 addstr("\rClient connected - awaiting challenge acceptance...");
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141 refresh();
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142 int code = net_recieve_code(fd);
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143 if (code == NETCODE_ACCEPT) {
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144 addstr("\rClient connected - challenge accepted.");
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145 clrtoeol();
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146 if (settings->continuepgn) {
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147 game_continue(settings, fd, &continuegame);
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148 } else {
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149 game_start(settings, fd);
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150 }
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151 } else if (code == NETCODE_DECLINE) {
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152 addstr("\rClient connected - challenge declined.");
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153 clrtoeol();
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154 } else if (code == NETCODE_CONNLOST) {
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155 addstr("\rClient connected - but gave no response.");
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156 clrtoeol();
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157 } else {
34
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158 addstr("\rInvalid client response");
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159 clrtoeol();
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160
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161 net_destroy(&server);
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162 return 1;
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163 }
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164
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165 net_destroy(&server);
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166 return 0;
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167 }

mercurial