2 Copyright (C) 1999-2007 id Software, Inc. and contributors.
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3 For a list of contributors, see the accompanying CONTRIBUTORS file.
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5 This file is part of GtkRadiant.
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7 GtkRadiant is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2 of the License, or
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10 (at your option) any later version.
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12 GtkRadiant is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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17 You should have received a copy of the GNU General Public License
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18 along with GtkRadiant; if not, write to the Free Software
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19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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22 //===========================================================================
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24 // Name: l_net_wins.c
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25 // Function: WinSock
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26 // Programmer: MrElusive
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27 // Last update: TTimo: cross-platform version, l_net library
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30 //===========================================================================
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32 //#include <windows.h>
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38 #include "l_net_wins.h"
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40 #include <arpa/inet.h>
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41 #include <sys/types.h>
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42 #include <sys/socket.h>
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43 #include <sys/ioctl.h>
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44 #include <netinet/in.h>
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45 #include <netinet/tcp.h>
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48 #define SOCKET_ERROR -1
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49 #define INVALID_SOCKET -1
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51 extern void WinPrint(char *str, ...);
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53 #define WinError WinPrint
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58 #define ioctlsocket ioctl
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59 #define closesocket close
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61 int WSAGetLastError()
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67 typedef struct tag_error_struct
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74 typedef struct tag_error_struct
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80 #define NET_NAMELEN 64
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82 static char my_tcpip_address[NET_NAMELEN];
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84 #define DEFAULTnet_hostport 26000
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86 #define MAXHOSTNAMELEN 256
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88 static int net_acceptsocket = -1; // socket for fielding new connections
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89 static int net_controlsocket;
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90 static int net_hostport; // udp port number for acceptsocket
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91 static int net_broadcastsocket = 0;
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92 //static qboolean ifbcastinit = qfalse;
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93 //static struct sockaddr_s broadcastaddr;
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94 static struct sockaddr_s broadcastaddr;
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96 static unsigned long myAddr;
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98 ERROR_STRUCT errlist[] = {
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99 {EACCES,"EACCES - The address is protected, user is not root"},
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100 {EAGAIN,"EAGAIN - Operation on non-blocking socket that cannot return immediatly"},
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101 {EBADF, "EBADF - sockfd is not a valid descriptor"},
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102 {EFAULT, "EFAULT - The parameter is not in a writable part of the user address space"},
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103 {EINVAL,"EINVAL - The socket is already bound to an address"},
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104 {ENOBUFS,"ENOBUFS - not enough memory"},
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105 {ENOMEM, "ENOMEM - not enough memory"},
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106 {ENOTCONN, "ENOTCONN - not connected"},
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107 {ENOTSOCK,"ENOTSOCK - Argument is file descriptor not a socket"},
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108 {EOPNOTSUPP,"ENOTSUPP - The referenced socket is not of type SOCK_STREAM"},
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109 {EPERM, "EPERM - Firewall rules forbid connection"},
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113 //===========================================================================
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117 // Changes Globals: -
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118 //===========================================================================
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119 char *WINS_ErrorMessage(int error)
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123 if (!error) return "No error occurred";
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125 for (search = 0; errlist[search].errstr; search++)
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127 if (error == errlist[search].errnum)
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128 return (char *)errlist[search].errstr;
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131 return "Unknown error";
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132 } //end of the function WINS_ErrorMessage
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133 //===========================================================================
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137 // Changes Globals: -
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138 //===========================================================================
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139 int WINS_Init(void)
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142 struct hostent *local;
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143 char buff[MAXHOSTNAMELEN];
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144 struct sockaddr_s addr;
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148 linux doesn't have anything to initialize for the net
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149 "Windows .. built for the internet .. the internet .. built with unix"
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152 WORD wVersionRequested;
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154 wVersionRequested = MAKEWORD(2, 2);
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156 r = WSAStartup (wVersionRequested, &winsockdata);
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160 WinPrint("Winsock initialization failed.\n");
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165 i = COM_CheckParm ("-udpport");
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167 net_hostport = DEFAULTnet_hostport;
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169 else if (i < com_argc-1)
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170 net_hostport = Q_atoi (com_argv[i+1]);
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172 Sys_Error ("WINS_Init: you must specify a number after -udpport");
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175 // determine my name & address
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176 gethostname(buff, MAXHOSTNAMELEN);
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177 local = gethostbyname(buff);
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178 myAddr = *(int *)local->h_addr_list[0];
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180 // if the quake hostname isn't set, set it to the machine name
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181 // if (Q_strcmp(hostname.string, "UNNAMED") == 0)
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183 // see if it's a text IP address (well, close enough)
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184 for (p = buff; *p; p++)
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185 if ((*p < '0' || *p > '9') && *p != '.')
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188 // if it is a real name, strip off the domain; we only want the host
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191 for (i = 0; i < 15; i++)
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192 if (buff[i] == '.')
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196 // Cvar_Set ("hostname", buff);
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199 //++timo WTF is that net_controlsocket? it's sole purpose is to retrieve the local IP?
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200 if ((net_controlsocket = WINS_OpenSocket (0)) == SOCKET_ERROR)
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201 WinError("WINS_Init: Unable to open control socket\n");
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203 ((struct sockaddr_in *)&broadcastaddr)->sin_family = AF_INET;
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204 ((struct sockaddr_in *)&broadcastaddr)->sin_addr.s_addr = INADDR_BROADCAST;
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205 ((struct sockaddr_in *)&broadcastaddr)->sin_port = htons((u_short)net_hostport);
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207 WINS_GetSocketAddr (net_controlsocket, &addr);
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208 strcpy(my_tcpip_address, WINS_AddrToString (&addr));
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209 p = strrchr (my_tcpip_address, ':');
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211 WinPrint("Winsock Initialized\n");
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213 return net_controlsocket;
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214 } //end of the function WINS_Init
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215 //===========================================================================
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219 // Changes Globals: -
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220 //===========================================================================
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221 char *WINS_MyAddress(void)
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223 return my_tcpip_address;
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224 } //end of the function WINS_MyAddress
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225 //===========================================================================
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229 // Changes Globals: -
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230 //===========================================================================
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231 void WINS_Shutdown(void)
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234 WINS_CloseSocket(net_controlsocket);
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237 WinPrint("Winsock Shutdown\n");
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238 } //end of the function WINS_Shutdown
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239 //===========================================================================
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243 // Changes Globals: -
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244 //===========================================================================
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246 void WINS_Listen(int state)
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248 // enable listening
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251 if (net_acceptsocket != -1)
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253 if ((net_acceptsocket = WINS_OpenSocket (net_hostport)) == -1)
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254 WinError ("WINS_Listen: Unable to open accept socket\n");
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258 // disable listening
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259 if (net_acceptsocket == -1)
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261 WINS_CloseSocket (net_acceptsocket);
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262 net_acceptsocket = -1;
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263 } //end of the function WINS_Listen*/
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264 //===========================================================================
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268 // Changes Globals: -
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269 //===========================================================================
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270 int WINS_OpenSocket(int port)
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273 struct sockaddr_in address;
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276 if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == SOCKET_ERROR)
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278 WinPrint("WINS_OpenSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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282 if (ioctlsocket (newsocket, FIONBIO, &_true) == SOCKET_ERROR)
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284 WinPrint("WINS_OpenSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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285 closesocket(newsocket);
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289 memset((char *) &address, 0, sizeof(address));
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290 address.sin_family = AF_INET;
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291 address.sin_addr.s_addr = INADDR_ANY;
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292 address.sin_port = htons((u_short)port);
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293 if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
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295 WinPrint("WINS_OpenSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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296 closesocket(newsocket);
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301 } //end of the function WINS_OpenSocket
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302 //===========================================================================
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306 // Changes Globals: -
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307 //===========================================================================
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308 int WINS_OpenReliableSocket(int port)
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311 struct sockaddr_in address;
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312 qboolean _true = 0xFFFFFFFF;
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316 if ((newsocket = socket(AF_INET, SOCK_STREAM, 0)) == -1)
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318 WinPrint("WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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322 memset((char *) &address, 0, sizeof(address));
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323 address.sin_family = AF_INET;
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324 address.sin_addr.s_addr = htonl(INADDR_ANY);
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325 address.sin_port = htons((u_short)port);
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326 if (bind(newsocket, (void *)&address, sizeof(address)) == -1)
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328 WinPrint("WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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329 closesocket(newsocket);
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334 if (setsockopt(newsocket, IPPROTO_TCP, TCP_NODELAY, (void *) &_true, sizeof(int)) == -1)
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336 WinPrint("WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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337 WinPrint("setsockopt error\n");
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341 } //end of the function WINS_OpenReliableSocket
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342 //===========================================================================
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346 // Changes Globals: -
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347 //===========================================================================
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348 int WINS_Listen(int socket)
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352 if (ioctlsocket(socket, FIONBIO, &_true) == -1)
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354 WinPrint("WINS_Listen: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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357 if (listen(socket, SOMAXCONN) == SOCKET_ERROR)
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359 WinPrint("WINS_Listen: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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363 } //end of the function WINS_Listen
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364 //===========================================================================
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368 // Changes Globals: -
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369 //===========================================================================
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370 int WINS_Accept(int socket, struct sockaddr_s *addr)
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372 int addrlen = sizeof (struct sockaddr_s);
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374 qboolean _true = 1;
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376 newsocket = accept(socket, (struct sockaddr *)addr, &addrlen);
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377 if (newsocket == INVALID_SOCKET)
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379 if (errno == EAGAIN) return -1;
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380 WinPrint("WINS_Accept: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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384 if (setsockopt(newsocket, IPPROTO_TCP, TCP_NODELAY, (void *) &_true, sizeof(int)) == SOCKET_ERROR)
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386 WinPrint("WINS_Accept: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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387 WinPrint("setsockopt error\n");
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390 } //end of the function WINS_Accept
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391 //===========================================================================
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395 // Changes Globals: -
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396 //===========================================================================
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397 int WINS_CloseSocket(int socket)
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400 if (socket == net_broadcastsocket)
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401 net_broadcastsocket = 0;
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403 // shutdown(socket, SD_SEND);
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405 if (closesocket(socket) == SOCKET_ERROR)
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407 WinPrint("WINS_CloseSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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408 return SOCKET_ERROR;
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411 } //end of the function WINS_CloseSocket
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412 //===========================================================================
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413 // this lets you type only as much of the net address as required, using
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414 // the local network components to fill in the rest
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418 // Changes Globals: -
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419 //===========================================================================
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420 static int PartialIPAddress (char *in, struct sockaddr_s *hostaddr)
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430 strcpy(buff+1, in);
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431 if (buff[1] == '.') b++;
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438 if (*++b < '0' || *b > '9') return -1;
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439 while (!( *b < '0' || *b > '9'))
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440 num = num*10 + *(b++) - '0';
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442 addr = (addr<<8) + num;
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445 hostaddr->sa_family = AF_INET;
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446 ((struct sockaddr_in *)hostaddr)->sin_port = htons((u_short)net_hostport);
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447 ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr = (myAddr & htonl(mask)) | htonl(addr);
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450 } //end of the function PartialIPAddress
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451 //===========================================================================
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455 // Changes Globals: -
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456 //===========================================================================
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457 int WINS_Connect(int socket, struct sockaddr_s *addr)
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460 u_long _true2 = 0xFFFFFFFF;
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462 ret = connect(socket, (struct sockaddr *)addr, sizeof(struct sockaddr_s));
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463 if (ret == SOCKET_ERROR)
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465 WinPrint("WINS_Connect: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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468 if (ioctlsocket(socket, FIONBIO, &_true2) == -1)
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470 WinPrint("WINS_Connect: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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474 } //end of the function WINS_Connect
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475 //===========================================================================
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479 // Changes Globals: -
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480 //===========================================================================
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481 int WINS_CheckNewConnections(void)
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485 if (net_acceptsocket == -1)
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488 if (recvfrom(net_acceptsocket, buf, 4, MSG_PEEK, NULL, NULL) > 0)
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489 return net_acceptsocket;
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491 } //end of the function WINS_CheckNewConnections
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492 //===========================================================================
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493 // returns the number of bytes read
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494 // 0 if no bytes available
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499 // Changes Globals: -
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500 //===========================================================================
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501 int WINS_Read(int socket, byte *buf, int len, struct sockaddr_s *addr)
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503 int addrlen = sizeof (struct sockaddr_s);
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508 ret = recvfrom(socket, buf, len, 0, (struct sockaddr *)addr, &addrlen);
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511 // errno = WSAGetLastError();
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513 if (errno == EAGAIN || errno == ENOTCONN)
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519 ret = recv(socket, buf, len, 0);
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520 // if there's no data on the socket ret == -1 and errno == EAGAIN
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521 // MSDN states that if ret == 0 the socket has been closed
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522 // man recv doesn't say anything
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525 if (ret == SOCKET_ERROR)
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527 // errno = WSAGetLastError();
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529 if (errno == EAGAIN || errno == ENOTCONN)
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533 if (ret == SOCKET_ERROR)
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535 WinPrint("WINS_Read: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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538 } //end of the function WINS_Read
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539 //===========================================================================
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543 // Changes Globals: -
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544 //===========================================================================
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545 int WINS_MakeSocketBroadcastCapable (int socket)
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549 // make this socket broadcast capable
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550 if (setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i)) < 0)
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552 net_broadcastsocket = socket;
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555 } //end of the function WINS_MakeSocketBroadcastCapable
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556 //===========================================================================
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560 // Changes Globals: -
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561 //===========================================================================
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562 int WINS_Broadcast (int socket, byte *buf, int len)
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566 if (socket != net_broadcastsocket)
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568 if (net_broadcastsocket != 0)
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569 WinError("Attempted to use multiple broadcasts sockets\n");
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570 ret = WINS_MakeSocketBroadcastCapable (socket);
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573 WinPrint("Unable to make socket broadcast capable\n");
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578 return WINS_Write (socket, buf, len, &broadcastaddr);
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579 } //end of the function WINS_Broadcast
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580 //===========================================================================
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581 // returns qtrue on success or qfalse on failure
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585 // Changes Globals: -
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586 //===========================================================================
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587 int WINS_Write(int socket, byte *buf, int len, struct sockaddr_s *addr)
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594 while(written < len)
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596 ret = sendto (socket, &buf[written], len-written, 0, (struct sockaddr *)addr, sizeof(struct sockaddr_s));
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597 if (ret == SOCKET_ERROR)
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599 if (WSAGetLastError() != EAGAIN)
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601 //++timo FIXME: what is this used for?
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613 while(written < len)
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615 ret = send(socket, buf, len, 0);
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616 if (ret == SOCKET_ERROR)
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618 if (WSAGetLastError() != EAGAIN)
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620 //++timo FIXME: what is this used for?
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629 if (ret == SOCKET_ERROR)
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631 WinPrint("WINS_Write: %s\n", WINS_ErrorMessage(WSAGetLastError()));
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633 return (ret == len);
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634 } //end of the function WINS_Write
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635 //===========================================================================
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639 // Changes Globals: -
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640 //===========================================================================
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641 char *WINS_AddrToString (struct sockaddr_s *addr)
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643 static char buffer[22];
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646 haddr = ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr);
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647 sprintf(buffer, "%d.%d.%d.%d:%d", (haddr >> 24) & 0xff, (haddr >> 16) & 0xff, (haddr >> 8) & 0xff, haddr & 0xff, ntohs(((struct sockaddr_in *)addr)->sin_port));
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649 } //end of the function WINS_AddrToString
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650 //===========================================================================
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654 // Changes Globals: -
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655 //===========================================================================
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656 int WINS_StringToAddr(char *string, struct sockaddr_s *addr)
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658 int ha1, ha2, ha3, ha4, hp;
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661 sscanf(string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp);
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662 ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4;
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664 addr->sa_family = AF_INET;
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665 ((struct sockaddr_in *)addr)->sin_addr.s_addr = htonl(ipaddr);
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666 ((struct sockaddr_in *)addr)->sin_port = htons((u_short)hp);
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668 } //end of the function WINS_StringToAddr
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669 //===========================================================================
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673 // Changes Globals: -
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674 //===========================================================================
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675 int WINS_GetSocketAddr(int socket, struct sockaddr_s *addr)
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677 int addrlen = sizeof(struct sockaddr_s);
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680 memset(addr, 0, sizeof(struct sockaddr_s));
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681 getsockname(socket, (struct sockaddr *)addr, &addrlen);
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682 a = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
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683 if (a == 0 || a == inet_addr("127.0.0.1"))
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684 ((struct sockaddr_in *)addr)->sin_addr.s_addr = myAddr;
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687 } //end of the function WINS_GetSocketAddr
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688 //===========================================================================
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692 // Changes Globals: -
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693 //===========================================================================
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694 int WINS_GetNameFromAddr (struct sockaddr_s *addr, char *name)
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696 struct hostent *hostentry;
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698 hostentry = gethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr, sizeof(struct in_addr), AF_INET);
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701 strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1);
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705 strcpy (name, WINS_AddrToString (addr));
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707 } //end of the function WINS_GetNameFromAddr
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708 //===========================================================================
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712 // Changes Globals: -
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713 //===========================================================================
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714 int WINS_GetAddrFromName(char *name, struct sockaddr_s *addr)
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716 struct hostent *hostentry;
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718 if (name[0] >= '0' && name[0] <= '9')
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719 return PartialIPAddress (name, addr);
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721 hostentry = gethostbyname (name);
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725 addr->sa_family = AF_INET;
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726 ((struct sockaddr_in *)addr)->sin_port = htons((u_short)net_hostport);
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727 ((struct sockaddr_in *)addr)->sin_addr.s_addr = *(int *)hostentry->h_addr_list[0];
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730 } //end of the function WINS_GetAddrFromName
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731 //===========================================================================
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735 // Changes Globals: -
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736 //===========================================================================
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737 int WINS_AddrCompare (struct sockaddr_s *addr1, struct sockaddr_s *addr2)
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739 if (addr1->sa_family != addr2->sa_family)
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742 if (((struct sockaddr_in *)addr1)->sin_addr.s_addr != ((struct sockaddr_in *)addr2)->sin_addr.s_addr)
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745 if (((struct sockaddr_in *)addr1)->sin_port != ((struct sockaddr_in *)addr2)->sin_port)
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749 } //end of the function WINS_AddrCompare
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750 //===========================================================================
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754 // Changes Globals: -
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755 //===========================================================================
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756 int WINS_GetSocketPort (struct sockaddr_s *addr)
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758 return ntohs(((struct sockaddr_in *)addr)->sin_port);
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759 } //end of the function WINS_GetSocketPort
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760 //===========================================================================
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764 // Changes Globals: -
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765 //===========================================================================
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766 int WINS_SetSocketPort (struct sockaddr_s *addr, int port)
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768 ((struct sockaddr_in *)addr)->sin_port = htons((u_short)port);
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770 } //end of the function WINS_SetSocketPort
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