1 | /**
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2 | * cf_socket.c
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3 | */
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4 | #include "cf_socket.h"
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5 | #include "cf_local.h"
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6 |
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7 | #ifdef _WIN32
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8 | # include <WinSock2.h>
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9 | # pragma comment (lib, "ws2_32.lib")
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10 | # define close(__sock) closesocket(__sock)
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11 | # define sa_family_t unsigned short
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12 | #else
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13 | # include <netinet/in.h>
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14 | # include <sys/socket.h>
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15 | # include <arpa/inet.h>
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16 | # include <netdb.h>
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17 | # include <unistd.h>
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18 | #endif
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19 |
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20 | #include <string.h>
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21 |
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22 | #define CHECK_SOCKET_INIT() \
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23 | if (!CF_Socket_IsInitialized ()) \
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24 | return CF_ERROR_SOCKET_NOT_INITIALIZED
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25 |
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26 | #define CHECK_INVALID_SOCKET(__sock) \
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27 | if (__sock < 0) \
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28 | return CF_ERROR_SOCKET_INVALID_SOCKET
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29 |
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30 | CF_BOOL gInitialized = CF_FALSE;
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31 |
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32 | CF_BOOL
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33 | CF_Socket_IsInitialized (void)
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34 | {
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35 | return gInitialized;
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36 | }
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37 |
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38 | int
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39 | CF_Socket_Initialize (void)
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40 | {
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41 | int result = 0;
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42 |
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43 | #ifdef WIN32
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44 | WSADATA winsockData;
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45 | result = WSAStartup (MAKEWORD (2, 0), &winsockData);
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46 | #endif
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47 | gInitialized = CF_TRUE;
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48 |
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49 | if (result != 0)
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50 | return CF_ERROR_SOCKET_INITIALIZE;
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51 |
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52 | return CF_OK;
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53 | }
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54 |
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55 | int
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56 | CF_Socket_Finalize (void)
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57 | {
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58 | int result = 0;
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59 |
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60 | CHECK_SOCKET_INIT ();
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61 |
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62 | #ifdef WIN32
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63 | result = WSACleanup ();
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64 | #endif
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65 | if (result != 0)
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66 | return CF_ERROR_SOCKET_FINALIZE;
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67 |
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68 | return CF_OK;
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69 | }
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70 |
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71 | int
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72 | CF_Socket_Close (const int sock)
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73 | {
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74 | int result = 0;
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75 |
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76 | CHECK_INVALID_SOCKET (sock);
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77 |
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78 | result = close (sock);
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79 |
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80 | if (result != 0)
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81 | return CF_ERROR_SOCKET_CLOSE;
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82 |
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83 | return CF_OK;
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84 | }
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85 |
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86 | int
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87 | CF_Socket_SetOption (const int sock,
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88 | const int optname,
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89 | const void * optval,
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90 | const size_t optlen)
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91 | {
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92 | int result = 0;
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93 |
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94 | CHECK_INVALID_SOCKET (sock);
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95 |
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96 | result = setsockopt (sock,
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97 | SOL_SOCKET,
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98 | optname,
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99 | #ifdef _WIN32
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100 | (char *) optval,
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101 | #else
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102 | optval,
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103 | #endif
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104 | (socklen_t) optlen);
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105 | if (result < 0)
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106 | return CF_ERROR_SOCKET_SET_OPTION;
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107 |
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108 | return CF_OK;
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109 | }
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110 |
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111 | int
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112 | CF_Socket_GetOption (const int sock,
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113 | const int optname,
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114 | void * optval,
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115 | size_t * optlen)
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116 | {
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117 | int result = 0;
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118 |
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119 | CHECK_INVALID_SOCKET (sock);
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120 |
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121 | result = getsockopt (sock,
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122 | SOL_SOCKET,
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123 | optname,
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124 | #ifdef _WIN32
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125 | (char *) optval,
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126 | #else
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127 | optval,
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128 | #endif
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129 | (socklen_t *) optlen);
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130 | if (result < 0)
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131 | return CF_ERROR_SOCKET_GET_OPTION;
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132 |
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133 | return CF_OK;
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134 | }
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135 |
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136 | int
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137 | CF_Socket_SetTimeout (const int sock,
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138 | const int timeout)
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139 | {
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140 | int result = 0;
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141 |
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142 | #ifdef _WIN32
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143 | int time_ms = timeout * 1000;
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144 | #else
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145 | struct timeval timeval;
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146 | timeval.tv_sec = timeout;
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147 | timeval.tv_usec= 0;
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148 | #endif
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149 |
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150 | CHECK_INVALID_SOCKET (sock);
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151 |
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152 | if (timeout < 0)
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153 | return CF_ERROR_SOCKET_INVALID_ARGS;
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154 |
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155 | result = CF_Socket_SetOption (sock,
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156 | SO_RCVTIMEO,
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157 | #ifdef _WIN32
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158 | &time_ms,
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159 | sizeof (time_ms));
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160 | #else
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161 | &timeval,
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162 | sizeof (timeval));
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163 | #endif
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164 | if (result < 0)
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165 | return CF_ERROR_SOCKET_SET_TIMEOUT;
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166 | /*----------------------------------------------------------------*/
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167 |
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168 | return CF_OK;
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169 | }
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170 |
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171 | int
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172 | CF_Socket_Connect (const char * ip,
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173 | const unsigned short port)
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174 | {
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175 | int result = 0;
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176 | int sock = 0;
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177 | struct sockaddr_in address;
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178 | struct hostent * hostEnt;
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179 |
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180 | CHECK_SOCKET_INIT ();
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181 |
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182 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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183 | if (sock < 0)
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184 | return CF_ERROR_SOCKET_CREATE;
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185 |
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186 | address.sin_family = AF_INET;
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187 | address.sin_port = htons (port);
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188 | address.sin_addr.s_addr = inet_addr (ip);
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189 |
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190 | TRY
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191 | {
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192 | if (address.sin_addr.s_addr == (unsigned int)-1)
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193 | {
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194 | hostEnt = gethostbyname (ip);
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195 | if (hostEnt == NULL)
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196 | {
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197 | result = CF_ERROR_SOCKET_GET_HOST;
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198 | TRY_BREAK;
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199 | }
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200 |
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201 | address.sin_family = (sa_family_t) hostEnt->h_addrtype;
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202 | memcpy (&(address.sin_addr.s_addr), hostEnt->h_addr, (size_t) hostEnt->h_length);
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203 | }
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204 |
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205 | result = connect (sock, (struct sockaddr *) &address, sizeof (address));
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206 | if (result < 0)
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207 | {
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208 | result = CF_ERROR_SOCKET_CONNECT;
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209 | TRY_BREAK;
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210 | }
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211 | }
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212 | CATCH_IF (result < 0)
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213 | {
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214 | CF_Socket_Close (sock);
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215 | return result;
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216 | }
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217 |
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218 | return CF_OK;
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219 | }
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220 |
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221 | int
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222 | CF_Socket_Server (const unsigned short port,
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223 | const int backlog)
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224 | {
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225 | int result = 0;
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226 | int sock = 0;
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227 | struct sockaddr_in address;
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228 |
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229 | CHECK_SOCKET_INIT ();
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230 |
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231 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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232 | if (sock < 0)
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233 | return CF_ERROR_SOCKET_CREATE;
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234 |
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235 | address.sin_family = AF_INET;
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236 | address.sin_addr.s_addr = htonl (INADDR_ANY);
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237 | address.sin_port = htons (port);
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238 |
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239 | TRY {
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240 | result = bind (sock, (struct sockaddr *) &address, sizeof (struct sockaddr));
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241 | if (result < 0)
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242 | {
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243 | result = CF_ERROR_SOCKET_BIND;
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244 | TRY_BREAK;
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245 | }
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246 |
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247 | result = listen (sock, backlog);
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248 | if (result < 0)
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249 | {
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250 | result = CF_ERROR_SOCKET_LISTEN;
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251 | TRY_BREAK;
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252 | }
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253 | }
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254 | CATCH_IF (result < 0)
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255 | {
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256 | CF_Socket_Close (sock);
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257 | return result;
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258 | }
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259 |
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260 | return sock;
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261 | }
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262 |
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263 | int
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264 | CF_Socket_Accept (const int sock,
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265 | void * address)
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266 | {
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267 | int sockClient;
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268 | struct sockaddr_in remoteAddress;
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269 | socklen_t len = sizeof (remoteAddress);
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270 |
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271 | CHECK_INVALID_SOCKET (sock);
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272 |
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273 | sockClient = accept (sock, (struct sockaddr *) &remoteAddress, &len);
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274 | if (sockClient < 0)
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275 | return CF_ERROR_SOCKET_ACCEPT;
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276 |
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277 | if (address != NULL)
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278 | memcpy ((void *) address, (void *) &remoteAddress, sizeof (struct sockaddr_in));
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279 |
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280 | return sockClient;
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281 | }
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282 |
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283 | int
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284 | CF_Socket_Send (const int sock,
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285 | const void * buf,
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286 | const int len)
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287 | {
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288 | int result = 0;
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289 |
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290 | CHECK_INVALID_SOCKET (sock);
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291 |
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292 | result = (int) send (sock, buf, (size_t) len, 0);
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293 | if (result != len)
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294 | return CF_ERROR_SOCKET_SEND;
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295 |
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296 | return CF_OK;
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297 | }
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298 |
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299 | int
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300 | CF_Socket_Recv (const int sock,
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301 | void * buf,
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302 | const int len)
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303 | {
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304 | int result = 0;
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305 |
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306 | CHECK_INVALID_SOCKET (sock);
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307 |
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308 | result = (int) recv (sock, buf, (size_t) len, 0);
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309 | if (result < 0)
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310 | return CF_ERROR_SOCKET_RECV;
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311 |
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312 | return result;
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313 | }
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