[4] | 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 | #else
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| 10 | # include <netinet/in.h>
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| 11 | # include <sys/socket.h>
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| 12 | # include <arpa/inet.h>
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| 13 | # include <netdb.h>
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| 14 | # include <unistd.h>
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| 15 | #endif
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| 16 |
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| 17 | #include <string.h>
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| 18 |
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| 19 | #define CHECK_SOCKET_INIT() \
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| 20 | if (!CF_Socket_IsInitialized ()) \
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| 21 | return CF_ERROR_SOCKET_NOT_INITIALIZED
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| 22 |
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| 23 | #define CHECK_INVALID_SOCKET(__sock) \
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| 24 | if (__sock < 0) \
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| 25 | return CF_ERROR_SOCKET_INVALID_SOCKET
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| 26 |
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| 27 | E_CF_BOOL gInitialized = CF_FALSE;
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| 28 |
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| 29 | E_CF_BOOL
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| 30 | CF_Socket_IsInitialized (void)
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| 31 | {
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| 32 | return gInitialized;
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| 33 | }
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| 34 |
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| 35 | int
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| 36 | CF_Socket_Initialize (void)
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| 37 | {
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| 38 | int result = 0;
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| 39 |
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| 40 | #ifdef WIN32
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| 41 | WSADATA winsockData;
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| 42 | result = WSAStartup (MAKEWORD (2, 0), &winsockData);
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| 43 | #endif
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| 44 | gInitialized = CF_TRUE;
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| 45 |
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| 46 | if (result != 0)
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| 47 | return CF_ERROR_SOCKET_INITIALIZE;
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| 48 |
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| 49 | return CF_OK;
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| 50 | }
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| 51 |
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| 52 | int
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| 53 | CF_Socket_Finalize (void)
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| 54 | {
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| 55 | int result = 0;
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| 56 |
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| 57 | if (!CF_Socket_IsInitialized ())
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| 58 | return CF_ERROR_SOCKET_NOT_INITIALIZED;
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| 59 |
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| 60 | #ifdef WIN32
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| 61 | result = WSACleanup ();
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| 62 | #endif
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| 63 | if (result != 0)
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| 64 | return CF_ERROR_SOCKET_FINALIZE;
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| 65 |
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| 66 | return CF_OK;
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| 67 | }
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| 68 |
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| 69 | int
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| 70 | CF_Socket_Close (const int sock)
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| 71 | {
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| 72 | int result = 0;
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| 73 |
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| 74 | CHECK_INVALID_SOCKET (sock);
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| 75 |
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| 76 | result = /* continued */
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| 77 | #ifdef _WIN32
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| 78 | closesocket (socket);
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| 79 | #else
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| 80 | close (sock);
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| 81 | #endif
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| 82 |
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| 83 | if (result != 0)
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| 84 | return CF_ERROR_SOCKET_CLOSE;
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| 85 |
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| 86 | return CF_OK;
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| 87 | }
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| 88 |
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| 89 | int
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| 90 | CF_Socket_SetOption (const int sock,
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| 91 | const int optname,
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| 92 | const void * optval,
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| 93 | const size_t optlen)
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| 94 | {
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| 95 | int result = 0;
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| 96 |
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| 97 | CHECK_INVALID_SOCKET (sock);
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| 98 |
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| 99 | result = setsockopt (sock,
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| 100 | SOL_SOCKET,
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| 101 | optname,
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| 102 | #ifdef _WIN32
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| 103 | (char *) optval,
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| 104 | #else
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| 105 | optval,
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| 106 | #endif
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| 107 | (socklen_t) optlen);
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| 108 | if (result < 0)
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| 109 | return CF_ERROR_SOCKET_SET_OPTION;
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| 110 |
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| 111 | return CF_OK;
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| 112 | }
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| 113 |
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| 114 | int
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| 115 | CF_Socket_GetOption (const int sock,
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| 116 | const int optname,
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| 117 | void * optval,
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| 118 | size_t * optlen)
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| 119 | {
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| 120 | int result = 0;
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| 121 |
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| 122 | CHECK_INVALID_SOCKET (sock);
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| 123 |
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| 124 | result = getsockopt (sock,
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| 125 | SOL_SOCKET,
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| 126 | optname,
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| 127 | #ifdef _WIN32
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| 128 | (char *) optval,
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| 129 | #else
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| 130 | optval,
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| 131 | #endif
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| 132 | (socklen_t *) optlen);
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| 133 | if (result < 0)
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| 134 | return CF_ERROR_SOCKET_GET_OPTION;
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| 135 |
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| 136 | return CF_OK;
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| 137 | }
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| 138 |
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| 139 | int
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| 140 | CF_Socket_SetTimeout (const int sock,
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| 141 | const int timeout)
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| 142 | {
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| 143 | int result = 0;
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| 144 |
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| 145 | CHECK_INVALID_SOCKET (sock);
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| 146 |
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| 147 | if (timeout < 0)
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| 148 | return CF_ERROR_SOCKET_INVALID_ARGS;
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| 149 |
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| 150 | #ifndef _WIN32
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| 151 | struct timeval timeval;
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| 152 | timeval.tv_sec = timeout;
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| 153 | timeval.tv_usec= 0;
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| 154 | #else
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| 155 | int time_ms = timeout * 1000;
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| 156 | #endif
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| 157 |
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| 158 | result = CF_Socket_SetOption (sock,
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| 159 | SO_RCVTIMEO,
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| 160 | #ifdef _WIN32
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| 161 | &time_ms,
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| 162 | sizeof (time_ms));
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| 163 | #else
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| 164 | &timeval,
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| 165 | sizeof (timeval));
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| 166 | #endif
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| 167 | if (result < 0)
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| 168 | return CF_ERROR_SOCKET_SET_TIMEOUT;
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| 169 | /*----------------------------------------------------------------*/
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| 170 |
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| 171 | return CF_OK;
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| 172 | }
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| 173 |
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| 174 | int
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| 175 | CF_Socket_Connect (const char * ip,
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| 176 | const unsigned short port)
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| 177 | {
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| 178 | int result = 0;
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| 179 | int sock = 0;
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| 180 | struct sockaddr_in address;
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| 181 | struct hostent * hostEnt;
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| 182 |
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| 183 | CHECK_SOCKET_INIT ();
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| 184 |
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| 185 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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| 186 | if (sock < 0)
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| 187 | return CF_ERROR_SOCKET_CREATE;
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| 188 |
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| 189 | address.sin_family = AF_INET;
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| 190 | address.sin_port = htons (port);
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| 191 | address.sin_addr.s_addr = inet_addr (ip);
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| 192 |
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| 193 | TRY
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| 194 | {
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| 195 | if (address.sin_addr.s_addr == (unsigned int)-1)
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| 196 | {
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| 197 | hostEnt = gethostbyname (ip);
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| 198 | if (hostEnt == NULL)
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| 199 | {
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| 200 | result = CF_ERROR_SOCKET_GET_HOST;
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| 201 | TRY_BREAK;
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| 202 | }
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| 203 |
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| 204 | address.sin_family = (sa_family_t) hostEnt->h_addrtype;
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| 205 | memcpy (&(address.sin_addr.s_addr), hostEnt->h_addr, (size_t) hostEnt->h_length);
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| 206 | }
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| 207 |
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| 208 | result = connect (sock, (struct sockaddr *) &address, sizeof (address));
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| 209 | if (result < 0)
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| 210 | {
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| 211 | result = CF_ERROR_SOCKET_CONNECT;
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| 212 | TRY_BREAK;
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| 213 | }
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| 214 | }
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| 215 | CATCH_IF (result < 0)
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| 216 | {
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| 217 | CF_Socket_Close (sock);
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| 218 | return result;
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| 219 | }
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| 220 |
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| 221 | return CF_OK;
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| 222 | }
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| 223 |
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| 224 | int
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| 225 | CF_Socket_Server (const unsigned short port,
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| 226 | const int backlog)
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| 227 | {
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| 228 | int result = 0;
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| 229 | int sock = 0;
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| 230 | struct sockaddr_in address;
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| 231 |
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| 232 | CHECK_SOCKET_INIT ();
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| 233 |
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| 234 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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| 235 | if (sock < 0)
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| 236 | return CF_ERROR_SOCKET_CREATE;
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| 237 |
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| 238 | address.sin_family = AF_INET;
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| 239 | address.sin_addr.s_addr = htonl (INADDR_ANY);
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| 240 | address.sin_port = htons (port);
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| 241 |
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| 242 | TRY {
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| 243 | result = bind (sock, (struct sockaddr *) &address, sizeof (struct sockaddr));
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| 244 | if (result < 0)
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| 245 | {
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| 246 | result = CF_ERROR_SOCKET_BIND;
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| 247 | TRY_BREAK;
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| 248 | }
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| 249 |
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| 250 | result = listen (sock, backlog);
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| 251 | if (result < 0)
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| 252 | {
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| 253 | result = CF_ERROR_SOCKET_LISTEN;
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| 254 | TRY_BREAK;
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| 255 | }
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| 256 | }
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| 257 | CATCH_IF (result < 0)
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| 258 | {
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| 259 | CF_Socket_Close (sock);
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| 260 | return result;
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| 261 | }
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| 262 |
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| 263 | return sock;
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| 264 | }
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| 265 |
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| 266 | int
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| 267 | CF_Socket_Accept (const int sock,
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| 268 | void * address)
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| 269 | {
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| 270 | int sockClient;
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| 271 | struct sockaddr_in remoteAddress;
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| 272 | socklen_t len = sizeof (remoteAddress);
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| 273 |
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| 274 | CHECK_INVALID_SOCKET (sock);
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| 275 |
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| 276 | sockClient = accept (sock, (struct sockaddr *) &remoteAddress, &len);
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| 277 | if (sockClient < 0)
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| 278 | return CF_ERROR_SOCKET_ACCEPT;
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| 279 |
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| 280 | if (address != NULL)
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| 281 | memcpy ((void *) address, (void *) &remoteAddress, sizeof (struct sockaddr_in));
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| 282 |
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| 283 | return sockClient;
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| 284 | }
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| 285 |
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| 286 | int
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| 287 | CF_Socket_Send (const int sock,
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| 288 | const void * buf,
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| 289 | const int len)
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| 290 | {
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| 291 | int result = 0;
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| 292 |
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| 293 | CHECK_INVALID_SOCKET (sock);
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| 294 |
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| 295 | result = (int) send (sock, buf, (size_t) len, 0);
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| 296 | if (result != len)
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| 297 | return CF_ERROR_SOCKET_SEND;
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| 298 |
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| 299 | return CF_OK;
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| 300 | }
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| 301 |
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| 302 | int
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| 303 | CF_Socket_Recv (const int sock,
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| 304 | void * buf,
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| 305 | const int len)
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| 306 | {
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| 307 | int result = 0;
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| 308 |
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| 309 | CHECK_INVALID_SOCKET (sock);
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| 310 |
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| 311 | result = (int) recv (sock, buf, (size_t) len, 0);
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| 312 | if (result < 0)
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| 313 | return CF_ERROR_SOCKET_RECV;
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| 314 |
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| 315 | return result;
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| 316 | }
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