1 | #include "cf/codec.h"
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2 |
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3 | #include "msgclnt.h"
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4 | #include "msg.hpp"
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5 |
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6 | #include <algorithm>
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7 |
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8 | #include <stdlib.h>
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9 |
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10 | // --------------------------------------------------------------
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11 |
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12 | typedef struct SMessageQWorkerArg
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13 | {
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14 | SecureSocket * secureSocket;
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15 | MessageQ * messageQ;
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16 | } SMessageQWorkerArg;
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17 |
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18 | typedef struct SCallbackWorkerArg
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19 | {
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20 | MessageQ * messageQ;
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21 | SCallback callback;
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22 | std::map<std::string, cf::bin> * keyMap;
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23 | } SCallbackWorkerArg;
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24 |
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25 | static int messageQworker(void * arg)
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26 | {
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27 | SMessageQWorkerArg * inst = (SMessageQWorkerArg *)arg;
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28 |
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29 | Protocol::Message message;
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30 | cf::size_t size;
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31 |
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32 | while (true)
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33 | {
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34 | try
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35 | {
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36 | size = 0;
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37 |
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38 | cf::bin raw = inst->secureSocket->receive();
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39 | size = raw.size();
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40 |
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41 | message.parse(raw.toString());
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42 | }
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43 | catch (cf::exception & e)
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44 | {
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45 | LOG(e.stackTrace());
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46 |
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47 | // closed
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48 | if (size == 0)
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49 | {
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50 | // dummy logout
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51 | message.parse(Protocol::Request().logout());
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52 | inst->messageQ->push(message);
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53 | break;
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54 | }
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55 | }
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56 |
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57 | inst->messageQ->push(message);
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58 | }
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59 |
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60 | free(inst);
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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 | static inline SConversation toConversation(const Protocol::Message & message, std::map<std::string, cf::bin> * keyMap)
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66 | {
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67 | SConversation c;
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68 |
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69 | c.sessid = message.get<std::string>(ProtocolType::SESSION_ID);
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70 | c.sensitive = message.get<bool>(ProtocolType::SENSITIVE);
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71 | c.from = message.get<std::string>(ProtocolType::FROM);
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72 |
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73 | std::string chat = message.get<std::string>(ProtocolType::MESSAGE);
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74 | if (chat.length() > 0)
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75 | {
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76 | crypto aria;
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77 | aria.setKey((*keyMap)[c.sessid]);
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78 |
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79 | cf::bin decoded = cf::codec::hex::getInstance()->decode(chat);
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80 | cf::bin plain = aria.decrypt(decoded);
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81 | c.message = plain.toString();
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82 | }
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83 |
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84 | return c;
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85 | }
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86 |
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87 | static inline SOpenSession toOpenSession(const Protocol::Message & message, std::map<std::string, cf::bin> * keyMap)
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88 | {
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89 | SOpenSession o;
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90 |
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91 | if (message.mObject.HasKey(ProtocolType::SESSION_KEY))
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92 | {
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93 | o.sessid = message.get<std::string>(ProtocolType::SESSION_ID);
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94 | o.idList = message.getList<std::string>(ProtocolType::ID_LIST);
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95 |
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96 | std::string encodedKey = message.get<std::string>(ProtocolType::SESSION_KEY);
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97 | cf::bin key = cf::codec::hex::getInstance()->decode(encodedKey);
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98 | (*keyMap)[o.sessid] = key;
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99 | }
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100 |
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101 | return o;
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102 | }
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103 |
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104 | static int callbackWorker(void * arg)
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105 | {
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106 | SCallbackWorkerArg * inst = (SCallbackWorkerArg *)arg;
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107 |
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108 | Protocol::Message message;
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109 |
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110 | while (true)
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111 | {
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112 | message = inst->messageQ->pop(ProtocolType::LISTEN, false);
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113 | if (message.type() != ProtocolType::NONE)
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114 | inst->callback.onListen(toConversation(message, inst->keyMap));
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115 |
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116 | message = inst->messageQ->pop(ProtocolType::OPEN_SESSION, false);
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117 | if (message.type() != ProtocolType::NONE)
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118 | inst->callback.onOpenSession(toOpenSession(message, inst->keyMap));
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119 |
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120 | message = inst->messageQ->pop(ProtocolType::LOGOUT, false);
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121 | if (message.type() != ProtocolType::NONE)
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122 | break;
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123 | }
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124 |
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125 | free(inst);
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126 |
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127 | return 0;
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128 | }
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129 |
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130 | static inline std::string hashPassword(const std::string & pw)
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131 | {
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132 | return cf::codec::hex::getInstance()->encode(crypto().sha256(cf::bin(pw)));
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133 | }
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134 |
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135 | static inline std::string getSecret(const std::string & msg, const std::string & sms, const std::string & random)
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136 | {
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137 | crypto crypt;
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138 | crypt.setKey(cf::bin(sms + DELIMITER + random));
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139 |
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140 | return cf::codec::hex::getInstance()->encode(crypt.encrypt(cf::bin(msg)));
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141 | }
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142 |
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143 | // --------------------------------------------------------------
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144 |
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145 | void MessageQ::push(const Protocol::Message & message)
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146 | {
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147 | mutex.lock();
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148 | messageQ.push_back(message);
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149 | mutex.unlock();
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150 | }
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151 |
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152 | Protocol::Message MessageQ::pop(const std::string & requestType, bool isWait)
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153 | {
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154 | Protocol::Message msg;
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155 |
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156 | do
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157 | {
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158 | if (messageQ.size() == 0)
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159 | continue;
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160 |
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161 | mutex.lock();
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162 | if (messageQ.size() > 0)
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163 | {
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164 | if (messageQ.front().type() == requestType)
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165 | {
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166 | msg = messageQ.front();
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167 | messageQ.pop_front();
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168 | isWait = false;
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169 | }
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170 | }
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171 | mutex.unlock();
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172 | } while (isWait);
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173 |
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174 | return msg;
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175 | }
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176 |
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177 | static bool handshake(cf::network::tcp & socket, std::string & msg, const std::string & type)
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178 | {
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179 | Protocol::Message parser;
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180 |
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181 | socket.send(msg);
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182 |
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183 | parser.parse(socket.receive().toString());
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184 | if (parser.type() != type)
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185 | THROW_EXCEPTION("invalid message type");
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186 |
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187 | return parser.get<bool>(ProtocolType::RESULT);
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188 | }
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189 |
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190 | // --------------------------------------------------------------
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191 |
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192 | chev::chev()
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193 | : listener(messageQworker),
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194 | caller(callbackWorker)
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195 | {
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196 | }
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197 |
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198 | chev::~chev()
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199 | {
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200 | secureSocket.close();
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201 | }
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202 |
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203 | const std::string & chev::getLastError() const
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204 | {
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205 | return error;
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206 | }
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207 |
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208 | bool chev::connect(const std::string & host, const unsigned short port)
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209 | {
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210 | try
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211 | {
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212 | socket.connect(host, port);
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213 | secureSocket.setSocket(&socket);
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214 | return true;
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215 | }
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216 | catch (cf::exception & e)
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217 | {
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218 | LOG(e.what());
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219 | error = e.stackTrace();
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220 | return false;
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221 | }
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222 | }
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223 |
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224 | bool chev::join(const std::string & id, const std::string & pw, const std::string & sms)
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225 | {
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226 | try
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227 | {
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228 | std::string random = cf::codec::hex::getInstance()->encode(generateRandom());
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229 | std::string sub = request.join(id, hashPassword(pw), sms);
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230 | std::string secret = getSecret(sub, sms, random);
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231 | std::string msg = request.secretWithRandom(ProtocolType::JOIN, id, secret, random);
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232 |
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233 | return handshake(socket, msg, ProtocolType::JOIN);
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234 | }
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235 | catch (cf::exception & e)
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236 | {
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237 | LOG(e.what());
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238 | error = e.stackTrace();
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239 | return false;
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240 | }
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241 | }
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242 |
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243 | bool chev::login(const std::string & id, const std::string & pw, const std::string & sms)
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244 | {
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245 | try
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246 | {
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247 | request.setUserID(id);
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248 |
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249 | std::string random = cf::codec::hex::getInstance()->encode(generateRandom());
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250 | std::string sub = request.login(hashPassword(pw));
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251 | std::string secret = getSecret(sub, sms, random);
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252 | std::string msg = request.secretWithRandom(ProtocolType::LOGIN, id, secret, random);
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253 |
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254 | bool succeed = handshake(socket, msg, ProtocolType::LOGIN);
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255 | if (succeed)
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256 | {
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257 | secureSocket.setKey(socket.local().address(), sms);
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258 |
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259 | SMessageQWorkerArg * arg = (SMessageQWorkerArg *)malloc(sizeof(SMessageQWorkerArg));
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260 | if (!arg)
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261 | return false;
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262 |
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263 | arg->secureSocket = &secureSocket;
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264 | arg->messageQ = &messageQ;
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265 |
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266 | listener.start(arg);
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267 | }
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268 | return succeed;
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269 | }
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270 | catch (cf::exception & e)
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271 | {
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272 | LOG(e.what());
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273 | error = e.stackTrace();
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274 | return false;
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275 | }
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276 | }
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277 |
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278 | bool chev::sms(const std::string & phone)
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279 | {
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280 | try
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281 | {
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282 | return handshake(socket, request.sms(phone), ProtocolType::SMS);
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283 | }
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284 | catch (cf::exception & e)
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285 | {
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286 | LOG(e.what());
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287 | error = e.stackTrace();
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288 | return false;
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289 | }
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290 | }
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291 |
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292 | bool chev::addFriend(const std::string & id)
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293 | {
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294 | try
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295 | {
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296 | secureSocket.send(request.addFriend(id));
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297 |
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298 | return messageQ.pop(ProtocolType::ADD_FRIEND).get<bool>(ProtocolType::RESULT);
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299 | }
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300 | catch (cf::exception & e)
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301 | {
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302 | LOG(e.what());
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303 | error = e.stackTrace();
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304 | return false;
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305 | }
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306 | }
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307 |
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308 | bool chev::getFriendList(std::vector<SFriend> & friends)
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309 | {
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310 | std::vector<SFriend> friendList;
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311 |
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312 | try
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313 | {
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314 | secureSocket.send(request.getFriendList());
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315 |
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316 | friends = messageQ.pop(ProtocolType::FRIEND_LIST).getFriendList();
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317 |
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318 | return messageQ.pop(ProtocolType::GET_FRIEND_LIST).get<bool>(ProtocolType::RESULT);
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319 | }
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320 | catch (cf::exception & e)
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321 | {
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322 | LOG(e.what());
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323 | error = e.stackTrace();
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324 | return false;
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325 | }
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326 | }
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327 |
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328 | std::string chev::getSessionID(const std::vector<std::string> & idList)
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329 | {
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330 | try
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331 | {
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332 | std::vector<std::string> toList = idList;
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333 | toList.insert(toList.begin(), request.getUserID());
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334 |
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335 | std::string concat = joinStrings(toList);
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336 |
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337 | if (sessionMap.find(concat) == sessionMap.end())
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338 | {
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339 | secureSocket.send(request.openSession(toList));
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340 |
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341 | Protocol::Message message = messageQ.pop(ProtocolType::OPEN_SESSION);
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342 |
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343 | if (message.mObject.HasKey(ProtocolType::SESSION_KEY))
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344 | {
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345 | std::string sessionID = message.get<std::string>(ProtocolType::SESSION_ID);
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346 | sessionMap[concat] = sessionID;
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347 | std::string encodedKey = message.get<std::string>(ProtocolType::SESSION_KEY);
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348 | cf::bin key = cf::codec::hex::getInstance()->decode(encodedKey);
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349 | keyMap[sessionID] = key;
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350 | }
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351 |
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352 | bool result = messageQ.pop(ProtocolType::OPEN_SESSION).get<bool>(ProtocolType::RESULT);
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353 | if (!result)
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354 | THROW_EXCEPTION("cannot open session for [" + concat + "]");
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355 | }
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356 |
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357 | return sessionMap[concat];
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358 | }
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359 | catch (cf::exception & e)
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360 | {
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361 | LOG(e.what());
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362 | error = e.stackTrace();
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363 | return "";
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364 | }
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365 | }
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366 |
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367 | bool chev::tell(const SConversation & conversation)
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368 | {
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369 | try
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370 | {
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371 | SConversation c = conversation;
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372 |
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373 | if (c.message.length() > 0)
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374 | {
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375 | crypto aria;
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376 | aria.setKey(keyMap[c.sessid]);
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377 |
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378 | cf::bin cipher = aria.encrypt(cf::bin(c.message));
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379 | c.message = cf::codec::hex::getInstance()->encode(cipher);
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380 | }
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381 |
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382 | secureSocket.send(request.tell(c.sessid, c.message, c.sensitive));
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383 |
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384 | return messageQ.pop(ProtocolType::TELL).get<bool>(ProtocolType::RESULT);
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385 | }
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386 | catch (cf::exception & e)
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387 | {
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388 | LOG(e.what());
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389 | error = e.stackTrace();
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390 | return false;
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391 | }
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392 | }
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393 |
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394 | bool chev::listen(const SCallback & callback)
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395 | {
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396 | SCallbackWorkerArg * arg = (SCallbackWorkerArg *)malloc(sizeof(SCallbackWorkerArg));
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397 | if (!arg)
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398 | return false;
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399 |
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400 | arg->messageQ = &messageQ;
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401 | arg->callback = callback;
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402 | arg->keyMap = &keyMap;
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403 |
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404 | caller.start(arg);
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405 |
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406 | return true;
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407 | }
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