1 | /**
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2 | * @file network.cpp
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3 | * @author myusgun@gmail.com
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4 | * @brief network
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5 | */
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6 | #include "cf/network.h"
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7 |
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8 | #include <iostream>
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9 | #include <sstream>
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10 | #include <string.h>
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11 |
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12 | #ifdef _ON_WINDOWS
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13 | # include <WinSock2.h>
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14 | # pragma comment(lib, "ws2_32.lib")
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15 | #else
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16 | # include <netinet/in.h>
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17 | # include <sys/socket.h>
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18 | # include <arpa/inet.h>
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19 | # include <netdb.h>
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20 | # include <unistd.h>
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21 | # include <sys/un.h>
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22 | # include <fcntl.h>
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23 | # include <errno.h>
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24 | # include <sys/types.h>
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25 | # include <sys/time.h>
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26 | #endif
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27 |
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28 | #ifdef _ON_WINDOWS
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29 | typedef cf::int32_t socklen_t;
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30 | # define sa_family_t cf::uint16_t
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31 | # define ERROR_INTR WSAEINTR
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32 | # define ERROR_CONNECTING WSAEWOULDBLOCK
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33 | # define SOCKET_API_CALL __stdcall
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34 | #else
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35 | # define closesocket(__sock) ::close(__sock)
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36 | # define ERROR_INTR EINTR
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37 | # define ERROR_CONNECTING EINPROGRESS
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38 | # define SOCKET_API_CALL
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39 | #endif
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40 |
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41 | /*--------------------------------------------------------------*/
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42 | /**
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43 | * do not include "cf/macaddr.[ch]pp"
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44 | * just declare and call
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45 | */
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46 | long GetMACAddress(cf::char_t *addr);
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47 |
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48 | static std::string convertAddressToString(struct sockaddr_in & addr)
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49 | {
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50 | cf::uint8_t * bytes = NULL;
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51 | cf::char_t str[32] = {0x00};
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52 |
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53 | bytes = reinterpret_cast<cf::uint8_t *>(&addr.sin_addr.s_addr);
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54 | snprintf(str, sizeof(str) - 1, "%u.%u.%u.%u", bytes[0],
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55 | bytes[1],
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56 | bytes[2],
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57 | bytes[3]);
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58 |
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59 | return str;
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60 | }
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61 |
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62 | static cf::void_t waitForTimeout(const cf::socket_t sock,
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63 | const cf::int32_t timeout,
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64 | const cf::bool_t checkWriteFD)
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65 | throw (cf::exception)
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66 | {
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67 | cf::int32_t result = 0;
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68 | fd_set rfds;
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69 | fd_set wfds;
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70 | fd_set * wfdsPtr = checkWriteFD ? &wfds : NULL;
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71 |
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72 | struct timeval tv;
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73 |
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74 | if (timeout <= 0)
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75 | return;
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76 |
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77 | FD_ZERO(&rfds);
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78 | FD_SET(sock, &rfds);
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79 |
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80 | FD_ZERO(&wfds);
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81 | FD_SET(sock, &wfds);
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82 |
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83 | tv.tv_sec = timeout;
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84 | tv.tv_usec = 0;
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85 |
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86 | result = select(sock + 1, &rfds, wfdsPtr, NULL, &tv);
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87 | if (result < 0)
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88 | THROW_EXCEPTION("select error");
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89 | else if (result == 0)
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90 | THROW_EXCEPTION("socket timed out");
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91 |
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92 | if (!FD_ISSET(sock, &rfds))
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93 | {
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94 | if (!checkWriteFD)
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95 | THROW_EXCEPTION("read fd is not set");
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96 | else if (!FD_ISSET(sock, &wfds))
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97 | THROW_EXCEPTION("write fd is not set");
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98 | }
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99 | }
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100 |
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101 | static cf::void_t setReuseAddress(const cf::network::tcp & tcp)
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102 | throw (cf::exception)
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103 | {
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104 | try
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105 | {
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106 | cf::int32_t reuseaddr = 1;
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107 |
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108 | tcp.setOption(SO_REUSEADDR, &reuseaddr, sizeof(reuseaddr));
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109 | }
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110 | catch (cf::exception & e)
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111 | {
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112 | FORWARD_EXCEPTION(e);
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113 | }
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114 | }
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115 |
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116 | typedef cf::int32_t (SOCKET_API_CALL * getSocketNameAPI)(cf::socket_t sock,
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117 | struct sockaddr * addr,
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118 | socklen_t *len);
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119 |
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120 | static cf::network::host getSocketNameFromFunction(const cf::socket_t sock,
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121 | getSocketNameAPI api)
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122 | throw (cf::exception)
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123 | {
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124 | cf::int32_t result = 0;
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125 | struct sockaddr_in addr;
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126 | socklen_t len = sizeof(struct sockaddr_in);
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127 |
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128 | result = api(sock, (struct sockaddr *)&addr, &len);
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129 | if (result < 0)
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130 | THROW_EXCEPTION("cannot get sockket or peer name ("
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131 | << cf::exception::systemCode()
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132 | << ")");
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133 |
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134 | return cf::network::host(convertAddressToString(addr), addr.sin_port);
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135 | }
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136 | /*--------------------------------------------------------------*/
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137 |
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138 | cf::network::host::host(const std::string & address,
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139 | const cf::uint16_t port)
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140 | : mAddress(address),
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141 | mPort(port)
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142 | {
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143 | }
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144 |
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145 | const std::string & cf::network::host::address() const
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146 | {
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147 | return mAddress;
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148 | }
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149 |
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150 | cf::uint16_t cf::network::host::port() const
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151 | {
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152 | return mPort;
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153 | }
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154 |
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155 | cf::bool_t cf::network::host::empty() const
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156 | {
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157 | return (address().empty() || port() <= 0) ? true : false;
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158 | }
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159 |
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160 | cf::network::tcp::tcp(const cf::socket_t attachedSocket)
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161 | throw (cf::exception)
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162 | : mSocket (attachedSocket),
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163 | mTimeout(0)
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164 | {
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165 | static cf::bool_t isInitialized = false;
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166 |
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167 | /* initialize socket */
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168 | if (!isInitialized)
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169 | {
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170 | #if defined(_WIN32) || defined(_WIN64)
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171 | WSADATA winsockData;
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172 | cf::int32_t result = WSAStartup(MAKEWORD(2, 0), &winsockData);
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173 | if (result)
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174 | THROW_EXCEPTION("cannot start-up winsock");
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175 | #endif
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176 |
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177 | isInitialized = true;
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178 | }
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179 |
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180 | if (mSocket == UNUSED_SOCKET)
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181 | mSocket = ::socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
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182 |
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183 | if (mSocket < 0)
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184 | THROW_EXCEPTION("cannot create a socket");
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185 | }
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186 |
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187 | cf::network::tcp::~tcp()
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188 | {
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189 | close();
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190 | }
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191 |
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192 | cf::socket_t cf::network::tcp::descriptor() const
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193 | {
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194 | return mSocket;
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195 | }
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196 |
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197 | cf::void_t cf::network::tcp::close()
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198 | {
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199 | if (mSocket == UNUSED_SOCKET)
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200 | return;
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201 |
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202 | closesocket(mSocket);
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203 |
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204 | mSocket = UNUSED_SOCKET;
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205 | }
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206 |
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207 | cf::void_t cf::network::tcp::connect(const cf::network::host & peer,
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208 | const cf::int32_t timeout)
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209 | throw (cf::exception)
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210 | {
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211 | if (peer.empty())
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212 | THROW_EXCEPTION("invalid host info");
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213 |
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214 | cf::int32_t result = 0;
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215 | cf::int32_t retval = 0;
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216 | cf::int32_t length = 0;
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217 | struct sockaddr_in addr;
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218 | struct hostent * hostEnt;
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219 |
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220 | const cf::char_t * host = peer.address().c_str();
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221 | cf::uint16_t port = peer.port();
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222 |
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223 | /* 1. set data */
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224 | addr.sin_family = AF_INET;
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225 | addr.sin_port = htons(port);
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226 | addr.sin_addr.s_addr = inet_addr(host);
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227 |
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228 | /* 2. get ip from hostname if inet_addr() is failed */
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229 | if (addr.sin_addr.s_addr == (unsigned int)-1)
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230 | {
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231 | hostEnt = gethostbyname(host);
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232 | if (hostEnt == NULL)
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233 | THROW_EXCEPTION("cannot get host by name");
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234 |
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235 | addr.sin_family = (sa_family_t)hostEnt->h_addrtype;
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236 | memcpy(&(addr.sin_addr.s_addr),
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237 | hostEnt->h_addr,
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238 | (size_t)hostEnt->h_length);
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239 | }
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240 |
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241 | /* 3. set options */
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242 | try
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243 | {
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244 | setReuseAddress(*this);
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245 | }
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246 | catch (cf::exception & e)
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247 | {
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248 | FORWARD_EXCEPTION(e);
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249 | }
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250 |
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251 | setTimeout(timeout);
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252 |
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253 | /* 4. connect */
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254 | result = ::connect(mSocket, (struct sockaddr *)&addr, sizeof(addr));
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255 | if (result < 0)
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256 | {
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257 | if (timeout > 0)
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258 | {
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259 | if (cf::exception::systemCode() != ERROR_CONNECTING)
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260 | THROW_EXCEPTION("socket connect error");
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261 |
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262 | try
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263 | {
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264 | length = sizeof(retval);
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265 | waitForTimeout(mSocket, timeout, true);
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266 | getOption(SO_ERROR, &retval, &length);
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267 | }
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268 | catch (cf::exception & e)
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269 | {
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270 | FORWARD_EXCEPTION(e);
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271 | }
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272 |
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273 | if (retval)
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274 | THROW_EXCEPTION("cannot get error from socket option");
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275 | }
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276 | else
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277 | {
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278 | THROW_EXCEPTION("cannot connect to " << host << ":" << port);
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279 | }
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280 | }
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281 | }
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282 |
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283 | cf::void_t cf::network::tcp::bind(const cf::uint16_t port) const
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284 | throw (cf::exception)
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285 | {
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286 | if (!port)
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287 | THROW_EXCEPTION("invalid port number");
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288 |
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289 | cf::int32_t result = 0;
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290 | struct sockaddr_in addr;
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291 |
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292 | /* 1. set data */
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293 | addr.sin_family = AF_INET;
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294 | addr.sin_addr.s_addr = htonl(INADDR_ANY);
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295 | addr.sin_port = htons(port);
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296 |
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297 | /* 2. set options */
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298 | try
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299 | {
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300 | setReuseAddress(*this);
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301 | }
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302 | catch (cf::exception & e)
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303 | {
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304 | FORWARD_EXCEPTION(e);
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305 | }
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306 |
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307 | result = ::bind(mSocket, (struct sockaddr *)&addr, sizeof(struct sockaddr));
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308 | if (result < 0)
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309 | THROW_EXCEPTION("cannot bind to " << port);
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310 | }
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311 |
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312 | cf::void_t cf::network::tcp::listen(const cf::int32_t backlog) const
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313 | throw (cf::exception)
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314 | {
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315 | cf::int32_t result = ::listen(mSocket, backlog);
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316 | if (result < 0)
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317 | THROW_EXCEPTION("cannot listen");
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318 | }
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319 |
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320 | cf::network::tcp cf::network::tcp::accept() const
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321 | throw (cf::exception)
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322 | {
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323 | cf::socket_t sock = 0;
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324 | struct sockaddr_in addr;
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325 | socklen_t len = sizeof(addr);
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326 |
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327 | sock = ::accept(mSocket, (struct sockaddr *)&addr, /* in/out */&len);
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328 | if (sock < 0)
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329 | THROW_EXCEPTION("cannot accept client");
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330 |
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331 | return cf::network::tcp(sock).detach();
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332 | }
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333 |
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334 | cf::void_t cf::network::tcp::attach(const cf::socket_t sock)
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335 | throw (exception)
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336 | {
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337 | if (sock == UNUSED_SOCKET)
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338 | THROW_EXCEPTION("has invalid socket");
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339 |
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340 | mSocket = sock;
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341 | }
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342 |
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343 | cf::socket_t cf::network::tcp::detach()
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344 | throw (exception)
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345 | {
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346 | if (mSocket == UNUSED_SOCKET)
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347 | THROW_EXCEPTION("has invalid socket");
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348 |
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349 | cf::socket_t sock = mSocket;
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350 |
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351 | mSocket = UNUSED_SOCKET;
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352 |
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353 | return sock;
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354 | }
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355 |
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356 | cf::void_t cf::network::tcp::send(const cf::bin & in) const
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357 | throw (cf::exception)
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358 | {
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359 | if (in.empty())
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360 | THROW_EXCEPTION("send data is null or zero-bytes");
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361 |
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362 | cf::char_t * buf = reinterpret_cast<cf::char_t *>(in.buffer());
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363 | cf::int32_t size = static_cast<cf::int32_t>(in.size());
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364 |
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365 | cf::int32_t sentSize = (cf::int32_t)::send (mSocket, buf, size, 0);
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366 | if (sentSize != size)
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367 | THROW_EXCEPTION("cannot send (" << cf::exception::systemCode() << ")");
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368 | }
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369 |
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370 | cf::void_t cf::network::tcp::receive(cf::bin & out) const
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371 | throw (cf::exception)
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372 | {
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373 | if (out.size() == 0)
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374 | THROW_EXCEPTION("binary buffer is not created");
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375 |
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376 | try
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377 | {
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378 | waitForTimeout(mSocket, mTimeout, false);
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379 | }
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380 | catch (cf::exception & e)
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381 | {
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382 | FORWARD_EXCEPTION(e);
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383 | }
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384 |
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385 | cf::char_t * buf = reinterpret_cast<cf::char_t *>(out.buffer());
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386 | cf::int32_t size = static_cast<cf::int32_t>(out.size());
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387 |
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388 | cf::int32_t receivedSize = (cf::int32_t)::recv(mSocket, buf, size, 0);
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389 | if (receivedSize < 0)
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390 | THROW_EXCEPTION("cannot receive (" << cf::exception::systemCode() << ")");
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391 | else if (receivedSize == 0)
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392 | THROW_EXCEPTION("connection closed");
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393 | else if (receivedSize < size)
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394 | out.resize(receivedSize);
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395 | }
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396 |
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397 | cf::bin cf::network::tcp::receive(const cf::int32_t size) const
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398 | throw (cf::exception)
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399 | {
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400 | cf::bin out;
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401 |
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402 | out.resize(size);
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403 | receive(out);
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404 |
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405 | return out;
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406 | }
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407 |
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408 | cf::bin cf::network::tcp::receive() const
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409 | throw (cf::exception)
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410 | {
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411 | const cf::size_t bufferSize = 1024;
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412 |
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413 | cf::bin buffer;
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414 | cf::bin out;
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415 |
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416 | buffer.resize(bufferSize);
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417 |
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418 | do
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419 | {
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420 | receive(buffer);
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421 | out.append(buffer);
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422 | } while (buffer.size() == bufferSize);
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423 |
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424 | return out;
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425 | }
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426 |
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427 | cf::void_t cf::network::tcp::getOption(const cf::int32_t optname,
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428 | cf::void_t * optval,
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429 | cf::int32_t * optlen) const
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430 | throw (cf::exception)
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431 | {
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432 | cf::int32_t result = getsockopt(mSocket,
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433 | SOL_SOCKET,
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434 | optname,
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435 | #ifdef _ON_WINDOWS
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436 | (cf::char_t *)optval,
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437 | #else
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438 | optval,
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439 | #endif
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440 | (socklen_t *)optlen);
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441 | if (result < 0)
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442 | THROW_EXCEPTION("cannot get socket option ("
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443 | << cf::exception::systemCode()
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444 | << ")");
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445 | }
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446 |
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447 | cf::void_t cf::network::tcp::setOption(const cf::int32_t optname,
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448 | const cf::void_t * optval,
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449 | const cf::int32_t optlen) const
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450 | throw (cf::exception)
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451 | {
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452 | cf::int32_t result = setsockopt(mSocket,
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453 | SOL_SOCKET,
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454 | optname,
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455 | #ifdef _ON_WINDOWS
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456 | (cf::char_t *)optval,
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457 | #else
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458 | optval,
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459 | #endif
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460 | (socklen_t)optlen);
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461 | if (result < 0)
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462 | THROW_EXCEPTION("cannot set socket option ("
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463 | << cf::exception::systemCode()
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464 | << ")");
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465 | }
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466 |
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467 | cf::void_t cf::network::tcp::setNonBlocking(const cf::bool_t flag)
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468 | {
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469 | #ifdef _ON_WINDOWS
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470 | cf::ulong_t mode = flag ? 1 : 0;
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471 | ioctlsocket(mSocket, FIONBIO, &mode);
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472 | #else
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473 | cf::int32_t mode = fcntl(mSocket, F_GETFL, 0);
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474 |
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475 | if (flag) mode |= O_NONBLOCK;
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476 | else mode &= ~O_NONBLOCK;
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477 |
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478 | fcntl(mSocket, F_SETFL, mode);
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479 | #endif
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480 | }
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481 |
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482 | cf::void_t cf::network::tcp::setTimeout(const cf::int32_t seconds)
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483 | {
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484 | setNonBlocking(seconds > 0 /*? true : false*/);
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485 | mTimeout = seconds;
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486 | }
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487 |
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488 | cf::network::host cf::network::tcp::peer() const
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489 | throw (cf::exception)
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490 | {
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491 | try
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492 | {
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493 | return getSocketNameFromFunction(mSocket, getpeername);
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494 | }
|
---|
495 | catch (cf::exception & e)
|
---|
496 | {
|
---|
497 | FORWARD_EXCEPTION(e);
|
---|
498 | }
|
---|
499 | }
|
---|
500 |
|
---|
501 | cf::network::host cf::network::tcp::local() const
|
---|
502 | throw (cf::exception)
|
---|
503 | {
|
---|
504 | try
|
---|
505 | {
|
---|
506 | return getSocketNameFromFunction(mSocket, getsockname);
|
---|
507 | }
|
---|
508 | catch (cf::exception & e)
|
---|
509 | {
|
---|
510 | FORWARD_EXCEPTION(e);
|
---|
511 | }
|
---|
512 | }
|
---|
513 |
|
---|
514 | std::string cf::network::nic::getMACAddress()
|
---|
515 | throw (cf::exception)
|
---|
516 | {
|
---|
517 | static const cf::int32_t macSize = 6; /* = 48-bits */
|
---|
518 | static cf::bool_t isDone = false;
|
---|
519 | static cf::uint8_t bytes[macSize] = {0x00,};
|
---|
520 | static cf::char_t asciiz[macSize * 2 + 1] = {0x00,};
|
---|
521 |
|
---|
522 | if (!isDone)
|
---|
523 | {
|
---|
524 | long result = 0;
|
---|
525 |
|
---|
526 | result = GetMACAddress(reinterpret_cast<cf::char_t *>(bytes));
|
---|
527 | if (result)
|
---|
528 | THROW_EXCEPTION("cannot get mac-address");
|
---|
529 |
|
---|
530 | for (cf::int32_t iter = 0 ; iter < macSize ; iter++)
|
---|
531 | snprintf(asciiz + (iter * 2), sizeof(asciiz) - 1,
|
---|
532 | "%02x",
|
---|
533 | bytes[iter]);
|
---|
534 |
|
---|
535 | isDone = true;
|
---|
536 | }
|
---|
537 |
|
---|
538 | return std::string(asciiz);
|
---|
539 | }
|
---|
540 |
|
---|
541 |
|
---|
542 | cf::uint32_t cf::network::byteOrder::htonl(cf::uint32_t in)
|
---|
543 | {
|
---|
544 | return ::htonl(in);
|
---|
545 | }
|
---|
546 |
|
---|
547 | cf::uint16_t cf::network::byteOrder::htons(cf::uint16_t in)
|
---|
548 | {
|
---|
549 | return ::htons(in);
|
---|
550 | }
|
---|
551 |
|
---|
552 | cf::uint32_t cf::network::byteOrder::ntohl(cf::uint32_t in)
|
---|
553 | {
|
---|
554 | return ::ntohl(in);
|
---|
555 | }
|
---|
556 |
|
---|
557 | cf::uint16_t cf::network::byteOrder::ntohs(cf::uint16_t in)
|
---|
558 | {
|
---|
559 | return ::ntohs(in);
|
---|
560 | }
|
---|