Sun, 14 Dec 2014 17:53:24 +0200
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1 | #include "rconsession.h" |
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2 | |
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3 | RCONSession* g_rconSession = nullptr; |
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4 | |
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5 | // ------------------------------------------------------------------------------------------------- |
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6 | // |
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7 | RCONSession::RCONSession() : |
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8 | m_state (RCON_DISCONNECTED), |
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9 | m_lastPing (0) |
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10 | { |
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11 | if (g_rconSession != NULL) |
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12 | { |
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13 | g_rconSession->disconnect(); |
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14 | delete g_rconSession; |
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15 | } |
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16 | |
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17 | g_rconSession = this; |
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18 | |
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19 | if (not m_socket.set_blocking (false)) |
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20 | { |
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21 | // TODO: find a better way to deal with errors |
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22 | print ("unable to set socket as non-blocking: %s\n", |
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23 | m_socket.error_string().chars()); |
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24 | } |
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25 | } |
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26 | |
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27 | // ------------------------------------------------------------------------------------------------- |
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28 | // |
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29 | RCONSession::~RCONSession() |
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30 | { |
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31 | if (g_rconSession == this) |
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32 | g_rconSession = nullptr; |
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33 | } |
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34 | |
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35 | // ------------------------------------------------------------------------------------------------- |
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36 | // |
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37 | METHOD |
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38 | RCONSession::connect (IPAddress address) -> void |
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39 | { |
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40 | m_address = address; |
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41 | m_state = RCON_CONNECTING; |
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42 | } |
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43 | |
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44 | // ------------------------------------------------------------------------------------------------- |
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45 | // |
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46 | METHOD |
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47 | RCONSession::disconnect() -> void |
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48 | { |
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49 | if (m_state == RCON_CONNECTED) |
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50 | { |
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51 | // Say goodbye to remote |
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52 | Bytestream packet; |
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53 | packet.write_byte (CLRC_DISCONNECT); |
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54 | this->send (packet); |
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55 | } |
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56 | |
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57 | m_state = RCON_DISCONNECTED; |
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58 | } |
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59 | |
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60 | // ------------------------------------------------------------------------------------------------- |
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61 | // |
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62 | METHOD |
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63 | RCONSession::send (const Bytestream& packet) -> void |
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64 | { |
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65 | m_socket.send (m_address, packet); |
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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 | METHOD |
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71 | RCONSession::tick() -> void |
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72 | { |
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73 | time_t now; |
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74 | time (&now); |
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75 | |
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76 | if (m_lastPing < now) |
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77 | { |
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78 | if (m_state == RCON_CONNECTING) |
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79 | { |
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80 | send_hello(); |
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81 | } |
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82 | else if (m_state == RCON_AUTHENTICATING) |
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83 | { |
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84 | send_password(); |
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85 | } |
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86 | else if (m_state == RCON_CONNECTED and m_lastPing + 5 < now) |
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87 | { |
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88 | Bytestream packet; |
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89 | packet.write_byte (CLRC_PONG); |
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90 | send (packet); |
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91 | bump_last_ping(); |
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92 | } |
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93 | } |
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94 | |
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95 | for (Datagram datagram; m_socket.read (datagram);) |
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96 | handle_packet (datagram.data, datagram.from); |
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97 | } |
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98 | |
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99 | // ------------------------------------------------------------------------------------------------- |
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100 | // |
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101 | METHOD |
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102 | RCONSession::handle_packet (Bytestream& packet, const IPAddress& from) -> void |
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103 | { |
11 | 104 | print ("Processing packet of %1 bytes\n", packet.written_length()); |
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105 | |
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106 | try |
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107 | { |
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108 | while (packet.bytes_left() > 0) |
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109 | { |
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110 | int header = packet.read_byte(); |
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111 | print ("Recieved packet with header %1\n", header); |
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112 | |
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113 | switch (ServerResponse (header)) |
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114 | { |
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115 | case SVRC_OLDPROTOCOL: |
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116 | print ("wrong version\n"); |
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117 | m_state = RCON_DISCONNECTED; |
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118 | break; |
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119 | |
13
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120 | case SVRC_BANNED: |
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121 | print ("you're banned\n"); |
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122 | m_state = RCON_DISCONNECTED; |
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123 | break; |
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124 | |
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125 | case SVRC_SALT: |
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126 | { |
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127 | String salt = packet.read_string(); |
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128 | m_salt = salt; |
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129 | m_state = RCON_AUTHENTICATING; |
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130 | send_password(); |
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131 | } |
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132 | break; |
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133 | |
13
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134 | case SVRC_INVALIDPASSWORD: |
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135 | print ("bad password\n"); |
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136 | m_state = RCON_DISCONNECTED; |
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137 | break; |
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138 | |
13
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139 | case SVRC_MESSAGE: |
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140 | { |
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141 | String message = packet.read_string(); |
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142 | if (message.ends_with ("\n")) |
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143 | message.remove_from_end (1); |
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144 | print ("message: %1\n", message); |
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145 | } |
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146 | break; |
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147 | |
13
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148 | case SVRC_LOGGEDIN: |
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149 | print ("login successful\n"); |
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150 | m_serverProtocol = packet.read_byte(); |
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151 | m_hostname = packet.read_string(); |
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152 | m_state = RCON_CONNECTED; |
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153 | |
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154 | for (int i = packet.read_byte(); i > 0; --i) |
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155 | process_server_updates (packet); |
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156 | |
13
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157 | for (int i = packet.read_byte(); i > 0; --i) |
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158 | { |
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159 | String message = packet.read_string(); |
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160 | message.normalize(); |
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161 | print ("--- %1\n", message); |
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162 | } |
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163 | break; |
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164 | |
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165 | case SVRC_UPDATE: |
12
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166 | process_server_updates (packet); |
13
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167 | break; |
12
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168 | } |
10
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169 | } |
13
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170 | } |
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171 | catch (std::exception& e) |
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172 | { |
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173 | print ("error while reading packet: %1\n", e.what()); |
12
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174 | } |
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175 | } |
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176 | |
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177 | METHOD |
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178 | RCONSession::process_server_updates (Bytestream& packet) -> void |
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179 | { |
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180 | switch (RCONUpdateType (packet.read_byte())) |
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181 | { |
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182 | case SVRCU_PLAYERDATA: |
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183 | { |
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184 | Vector<String> players; |
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185 | for (int i = packet.read_byte(); i > 0; --i) |
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186 | players << packet.read_string(); |
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187 | print ("players: %1\n", players); |
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188 | } |
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189 | break; |
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190 | |
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191 | case SVRCU_ADMINCOUNT: |
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192 | print ("num admins: %d1\n", packet.read_byte()); |
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193 | break; |
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194 | |
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195 | case SVRCU_MAP: |
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196 | print ("new map: %1\n", packet.read_string()); |
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197 | break; |
10
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198 | } |
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199 | } |
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200 | |
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201 | // ------------------------------------------------------------------------------------------------- |
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202 | // |
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203 | METHOD |
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204 | RCONSession::socket() -> UDPSocket* |
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205 | { |
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206 | return &m_socket; |
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207 | } |
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208 | |
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209 | // ------------------------------------------------------------------------------------------------- |
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210 | // |
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211 | METHOD |
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212 | RCONSession::send_hello() -> void |
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213 | { |
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214 | print ("connecting to %1...\n", m_address.to_string (IP_WITH_PORT)); |
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215 | Bytestream packet; |
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216 | packet.write_byte (CLRC_BEGINCONNECTION); |
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217 | packet.write_byte (RCON_PROTOCOL_VERSION); |
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218 | send (packet); |
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219 | bump_last_ping(); |
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220 | } |
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221 | |
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222 | // ------------------------------------------------------------------------------------------------- |
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223 | // |
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224 | METHOD |
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225 | RCONSession::send_password() -> void |
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226 | { |
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227 | print ("sending password...\n"); |
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228 | Bytestream packet; |
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229 | packet.write_byte (CLRC_PASSWORD); |
11 | 230 | print ("password: %1\nsalt: %2\nhashed password: %3\n", m_password, m_salt, (m_salt + m_password).md5()); |
10
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231 | packet.write_string ((m_salt + m_password).md5()); |
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232 | send (packet); |
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233 | bump_last_ping(); |
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234 | } |
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235 | |
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236 | // ------------------------------------------------------------------------------------------------- |
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237 | // |
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238 | METHOD |
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239 | RCONSession::set_password (const String& password) -> void |
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240 | { |
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241 | m_password = password; |
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242 | } |
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243 | |
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244 | // ------------------------------------------------------------------------------------------------- |
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245 | // |
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246 | METHOD |
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247 | RCONSession::bump_last_ping() -> void |
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248 | { |
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249 | time_t now; |
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250 | time (&now); |
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251 | m_lastPing = now; |
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252 | } |
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253 | |
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254 | // ------------------------------------------------------------------------------------------------- |
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255 | // |
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256 | STATIC METHOD |
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257 | RCONSession::get_session() -> RCONSession* |
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258 | { |
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259 | return g_rconSession; |
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260 | } |