1 files changed, 396 insertions, 0 deletions

diff --git a/src/OSSupport/Socket.cpp b/src/OSSupport/Socket.cpp
new file mode 100644
index 000000000..48b5d704d
--- /dev/null
+++ b/src/OSSupport/Socket.cpp
@@ -0,0 +1,396 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "Socket.h"
+
+#ifndef _WIN32
+	#include <netdb.h>
+	#include <unistd.h>
+	#include <arpa/inet.h>		//inet_ntoa()
+#else
+	#define socklen_t int
+#endif
+
+
+
+
+
+cSocket::cSocket(xSocket a_Socket)
+	: m_Socket(a_Socket)
+{
+}
+
+
+
+
+
+cSocket::~cSocket()
+{
+	// Do NOT close the socket; this class is an API wrapper, not a RAII!
+}
+
+
+
+
+
+cSocket::operator cSocket::xSocket() const
+{
+	return m_Socket;
+}
+
+
+
+
+
+cSocket::xSocket cSocket::GetSocket() const
+{
+	return m_Socket;
+}
+
+
+
+
+
+bool cSocket::IsValidSocket(cSocket::xSocket a_Socket)
+{
+	#ifdef _WIN32
+	return (a_Socket != INVALID_SOCKET);
+	#else  // _WIN32
+	return (a_Socket >= 0);
+	#endif  // else _WIN32
+}
+
+
+
+
+
+void cSocket::CloseSocket()
+{
+	#ifdef _WIN32
+	
+	closesocket(m_Socket);
+	
+	#else  // _WIN32
+	
+	if (shutdown(m_Socket, SHUT_RDWR) != 0)//SD_BOTH);
+	{
+		LOGWARN("Error on shutting down socket %d (%s): %s", m_Socket, m_IPString.c_str(), GetLastErrorString().c_str());
+	}
+	if (close(m_Socket) != 0)
+	{
+		LOGWARN("Error closing socket %d (%s): %s", m_Socket, m_IPString.c_str(), GetLastErrorString().c_str());
+	}
+	
+	#endif  // else _WIN32
+
+	// Invalidate the socket so that this object can be re-used for another connection
+	m_Socket = INVALID_SOCKET;
+}
+
+
+
+
+
+AString cSocket::GetErrorString( int a_ErrNo )
+{
+	char buffer[ 1024 ];
+	AString Out;
+
+	#ifdef _WIN32
+
+	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, a_ErrNo, 0, buffer, ARRAYCOUNT(buffer), NULL);
+	Printf(Out, "%d: %s", a_ErrNo, buffer);
+	if (!Out.empty() && (Out[Out.length() - 1] == '\n'))
+	{
+		Out.erase(Out.length() - 2);
+	}
+	return Out;
+	
+	#else  // _WIN32
+	
+	// According to http://linux.die.net/man/3/strerror_r there are two versions of strerror_r():
+	
+	#if ( _GNU_SOURCE ) && !defined(ANDROID_NDK)  // GNU version of strerror_r()
+	
+	char * res = strerror_r( errno, buffer, ARRAYCOUNT(buffer) );
+	if( res != NULL )
+	{
+		Printf(Out, "%d: %s", a_ErrNo, res);
+		return Out;
+	}
+	
+	#else  // XSI version of strerror_r():
+	
+	int res = strerror_r( errno, buffer, ARRAYCOUNT(buffer) );
+	if( res == 0 )
+	{
+		Printf(Out, "%d: %s", a_ErrNo, buffer);
+		return Out;
+	}
+	
+	#endif  // strerror_r() version
+	
+	else
+	{
+		Printf(Out, "Error %d while getting error string for error #%d!", errno, a_ErrNo);
+		return Out;
+	}
+	
+	#endif  // else _WIN32
+}
+
+
+
+
+int cSocket::GetLastError()
+{
+#ifdef _WIN32
+	return WSAGetLastError();
+#else
+	return errno;
+#endif
+}
+
+
+
+
+
+bool cSocket::SetReuseAddress(void)
+{
+	#if defined(_WIN32) || defined(ANDROID_NDK)
+		char yes = 1;
+	#else
+		int yes = 1;
+	#endif
+	return (setsockopt(m_Socket, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == 0);
+}
+
+
+
+
+
+int cSocket::WSAStartup()
+{
+#ifdef _WIN32
+	WSADATA wsaData;
+	memset(&wsaData, 0, sizeof(wsaData));
+	return ::WSAStartup(MAKEWORD(2, 2),&wsaData);
+#else
+	return 0;
+#endif
+}
+
+
+
+
+
+cSocket cSocket::CreateSocket(eFamily a_Family)
+{
+	return socket((int)a_Family, SOCK_STREAM, 0);
+}
+
+
+
+
+
+bool cSocket::BindToAnyIPv4(unsigned short a_Port)
+{
+	sockaddr_in local;
+	memset(&local, 0, sizeof(local));
+
+	local.sin_family = AF_INET;
+	local.sin_port = htons((u_short)a_Port);
+
+	return (bind(m_Socket, (sockaddr *)&local, sizeof(local)) == 0);
+}
+
+
+
+
+
+bool cSocket::BindToAnyIPv6(unsigned short a_Port)
+{
+	// Cannot use socckaddr_in6, because it is not defined in the default VS2008 SDK
+	// Must jump through hoops here
+	
+	sockaddr_in6 local;
+	memset(&local, 0, sizeof(local));
+
+	local.sin6_family = AF_INET6;
+	local.sin6_port = htons((u_short)a_Port);
+
+	return (bind(m_Socket, (sockaddr *)&local, sizeof(local)) == 0);
+}
+
+
+
+
+
+bool cSocket::BindToLocalhostIPv4(unsigned short a_Port)
+{
+	sockaddr_in local;
+	memset(&local, 0, sizeof(local));
+
+	local.sin_family = AF_INET;;
+	local.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+	local.sin_port = htons((u_short)a_Port);
+
+	return (bind(m_Socket, (sockaddr*)&local, sizeof(local)) == 0);
+}
+
+
+
+
+
+bool cSocket::Listen(int a_Backlog)
+{
+	return (listen(m_Socket, a_Backlog) == 0);
+}
+
+
+
+
+
+cSocket cSocket::AcceptIPv4(void)
+{
+	sockaddr_in from;
+	socklen_t fromlen = sizeof(from);
+
+	cSocket SClient = accept(m_Socket, (sockaddr *)&from, &fromlen);
+
+	if (SClient.IsValid() && (from.sin_addr.s_addr != 0))  // Get IP in string form
+	{
+		SClient.m_IPString = inet_ntoa(from.sin_addr);
+	}
+	return SClient;
+}
+
+
+
+
+
+cSocket cSocket::AcceptIPv6(void)
+{
+	sockaddr_in6 from;
+	socklen_t fromlen = sizeof(from);
+
+	cSocket SClient = accept(m_Socket, (sockaddr *)&from, &fromlen);
+
+	// Get IP in string form:
+	if (SClient.IsValid())
+	{
+		#if defined(_WIN32)
+			// Windows XP doesn't have inet_ntop, so we need to improvise. And MSVC has different headers than GCC
+			#ifdef _MSC_VER
+				// MSVC version
+				Printf(SClient.m_IPString, "%x:%x:%x:%x:%x:%x:%x:%x", 
+					from.sin6_addr.u.Word[0],
+					from.sin6_addr.u.Word[1],
+					from.sin6_addr.u.Word[2],
+					from.sin6_addr.u.Word[3],
+					from.sin6_addr.u.Word[4],
+					from.sin6_addr.u.Word[5],
+					from.sin6_addr.u.Word[6],
+					from.sin6_addr.u.Word[7]
+				);
+			#else  // _MSC_VER
+				// MinGW
+				Printf(SClient.m_IPString, "%x:%x:%x:%x:%x:%x:%x:%x", 
+					from.sin6_addr.s6_addr16[0],
+					from.sin6_addr.s6_addr16[1],
+					from.sin6_addr.s6_addr16[2],
+					from.sin6_addr.s6_addr16[3],
+					from.sin6_addr.s6_addr16[4],
+					from.sin6_addr.s6_addr16[5],
+					from.sin6_addr.s6_addr16[6],
+					from.sin6_addr.s6_addr16[7]
+				);
+			#endif  // else _MSC_VER
+		#else
+			char buffer[INET6_ADDRSTRLEN];
+			inet_ntop(AF_INET6, &(from.sin6_addr), buffer, sizeof(buffer));
+			SClient.m_IPString.assign(buffer);
+		#endif  // _WIN32
+	}
+	return SClient;
+}
+
+
+
+
+
+bool cSocket::ConnectToLocalhostIPv4(unsigned short a_Port)
+{
+	sockaddr_in server;
+	server.sin_family = AF_INET;
+	server.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+	server.sin_port = htons(a_Port);
+	return (connect(m_Socket, (sockaddr *)&server, sizeof(server)) == 0);
+}
+
+
+
+
+
+bool cSocket::ConnectIPv4(const AString & a_HostNameOrAddr, unsigned short a_Port)
+{
+	// First try IP Address string to hostent conversion, because it's faster
+	unsigned long addr = inet_addr(a_HostNameOrAddr.c_str());
+	hostent * hp = gethostbyaddr((char*)&addr, sizeof(addr), AF_INET);
+	if (hp == NULL)
+	{
+		// It is not an IP Address string, but rather a regular hostname, resolve:
+		hp = gethostbyname(a_HostNameOrAddr.c_str());
+		if (hp == NULL)
+		{
+			LOGWARN("cTCPLink: Could not resolve hostname \"%s\"", a_HostNameOrAddr.c_str());
+			CloseSocket();
+			return false;
+		}
+	}
+
+	sockaddr_in server;
+	server.sin_addr.s_addr = *((unsigned long*)hp->h_addr);
+	server.sin_family = AF_INET;
+	server.sin_port = htons( (unsigned short)a_Port );
+	return (connect(m_Socket, (sockaddr *)&server, sizeof(server)) == 0);
+}
+
+
+
+
+
+int cSocket::Receive(char* a_Buffer, unsigned int a_Length, unsigned int a_Flags)
+{
+	return recv(m_Socket, a_Buffer, a_Length, a_Flags);
+}
+
+
+
+
+
+int cSocket::Send(const char * a_Buffer, unsigned int a_Length)
+{
+	return send(m_Socket, a_Buffer, a_Length, 0);
+}
+
+
+
+
+
+unsigned short cSocket::GetPort(void) const
+{
+	ASSERT(IsValid());
+	
+	sockaddr_in Addr;
+	socklen_t AddrSize = sizeof(Addr);
+	if (getsockname(m_Socket, (sockaddr *)&Addr, &AddrSize) != 0)
+	{
+		return 0;
+	}
+	return ntohs(Addr.sin_port);
+}
+
+
+
+