1 files changed, 261 insertions, 0 deletions
diff --git a/tools/gator/daemon/OlySocket.cpp b/tools/gator/daemon/OlySocket.cpp
new file mode 100755
index 00000000000..a3bf74647cd
--- /dev/null
+++ b/tools/gator/daemon/OlySocket.cpp
@@ -0,0 +1,261 @@
+/**
+ * Copyright (C) ARM Limited 2010-2012. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <stdio.h>
+#ifdef WIN32
+#include <Winsock2.h>
+#else
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <netdb.h>
+#endif
+#include "OlySocket.h"
+#include "Logging.h"
+
+#ifdef WIN32
+#define CLOSE_SOCKET(x) closesocket(x)
+#define SHUTDOWN_RX_TX	SD_BOTH
+#define snprintf				_snprintf
+#else
+#define CLOSE_SOCKET(x) close(x)
+#define SHUTDOWN_RX_TX	SHUT_RDWR
+#endif
+
+extern void handleException();
+
+OlySocket::OlySocket(int port, bool multiple) {
+#ifdef WIN32
+	WSADATA wsaData;
+	if (WSAStartup(0x0202, &wsaData) != 0) {
+		logg->logError(__FILE__, __LINE__, "Windows socket initialization failed");
+		handleException();
+	}
+#endif
+
+	if (multiple) {
+		createServerSocket(port);
+	} else {
+		createSingleServerConnection(port);
+	}
+}
+
+OlySocket::OlySocket(int port, char* host) {
+	mFDServer = 0;
+	createClientSocket(host, port);
+}
+
+OlySocket::~OlySocket() {
+	if (mSocketID > 0) {
+		CLOSE_SOCKET(mSocketID);
+	}
+}
+
+void OlySocket::shutdownConnection() {
+	// Shutdown is primarily used to unblock other threads that are blocking on send/receive functions
+	shutdown(mSocketID, SHUTDOWN_RX_TX);
+}
+
+void OlySocket::closeSocket() {
+	// Used for closing an accepted socket but keeping the server socket active
+	if (mSocketID > 0) {
+		CLOSE_SOCKET(mSocketID);
+		mSocketID = -1;
+	}
+}
+
+void OlySocket::closeServerSocket() {
+	if (CLOSE_SOCKET(mFDServer) != 0) {
+		logg->logError(__FILE__, __LINE__, "Failed to close server socket.");
+		handleException();
+	}
+	mFDServer = 0;
+}
+
+void OlySocket::createClientSocket(char* hostname, int portno) {
+#ifdef WIN32
+	// TODO: Implement for Windows
+#else
+	char buf[32];
+	struct addrinfo hints, *res, *res0;
+
+	snprintf(buf, sizeof(buf), "%d", portno);
+	mSocketID = -1;
+	memset((void*)&hints, 0, sizeof(hints));
+	hints.ai_family = PF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+
+	if (getaddrinfo(hostname, buf, &hints, &res0)) {
+		logg->logError(__FILE__, __LINE__, "Client socket failed to get address info for %s", hostname);
+		handleException();
+	}
+	for (res=res0; res!=NULL; res = res->ai_next) {
+		if ( res->ai_family != PF_INET || res->ai_socktype != SOCK_STREAM ) {
+			continue;
+		}
+		mSocketID = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+		if (mSocketID < 0) {
+			continue;
+		}
+		if (connect(mSocketID, res->ai_addr, res->ai_addrlen) < 0) {
+			close(mSocketID);
+			mSocketID = -1;
+		}
+		if (mSocketID > 0) {
+			break;
+		}
+	}
+	freeaddrinfo(res0);
+	if (mSocketID <= 0) {
+		logg->logError(__FILE__, __LINE__, "Could not connect to client socket. Ensure ARM Streamline is running.");
+		handleException();
+	}
+#endif
+}
+
+void OlySocket::createSingleServerConnection(int port) {
+	createServerSocket(port);
+
+	mSocketID = acceptConnection();
+	closeServerSocket();
+}
+
+void OlySocket::createServerSocket(int port) {
+	// Create socket
+	mFDServer = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (mFDServer < 0) {
+		logg->logError(__FILE__, __LINE__, "Error creating server socket");
+		handleException();
+	}
+
+	// Enable address reuse, another solution would be to create the server socket once and only close it when the object exits
+	int on = 1;
+	if (setsockopt(mFDServer, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on)) != 0) {
+		logg->logError(__FILE__, __LINE__, "Setting server socket options failed");
+		handleException();
+	}
+
+	// Create sockaddr_in structure, ensuring non-populated fields are zero
+	struct sockaddr_in	sockaddr;
+	memset((void*)&sockaddr, 0, sizeof(struct sockaddr_in));
+	sockaddr.sin_family = AF_INET;
+	sockaddr.sin_port   = htons(port);
+	sockaddr.sin_addr.s_addr = INADDR_ANY;
+	
+	// Bind the socket to an address
+	if (bind(mFDServer, (const struct sockaddr*)&sockaddr, sizeof(sockaddr)) < 0) {
+		logg->logError(__FILE__, __LINE__, "Binding of server socket failed.\nIs an instance already running?");
+		handleException();
+	}
+
+	// Listen for connections on this socket
+	if (listen(mFDServer, 1) < 0) {
+		logg->logError(__FILE__, __LINE__, "Listening of server socket failed");
+		handleException();
+	}
+}
+
+// mSocketID is always set to the most recently accepted connection
+// The user of this class should maintain the different socket connections, e.g. by forking the process
+int OlySocket::acceptConnection() {
+	if (mFDServer <= 0) {
+		logg->logError(__FILE__, __LINE__, "Attempting multiple connections on a single connection server socket or attempting to accept on a client socket");
+		handleException();
+	}
+
+	// Accept a connection, note that this call blocks until a client connects
+	mSocketID = accept(mFDServer, NULL, NULL);
+	if (mSocketID < 0) {
+		logg->logError(__FILE__, __LINE__, "Socket acceptance failed");
+		handleException();
+	}
+	return mSocketID;
+}
+
+void OlySocket::send(char* buffer, int size) {
+	if (size <= 0 || buffer == NULL) {
+		return;
+	}
+
+	while (size > 0) {
+		int n = ::send(mSocketID, buffer, size, 0);
+		if (n < 0) {
+			logg->logError(__FILE__, __LINE__, "Socket send error");
+			handleException();
+		}
+		size -= n;
+		buffer += n;
+	}
+}
+
+// Returns the number of bytes received
+int OlySocket::receive(char* buffer, int size) {
+	if (size <= 0 || buffer == NULL) {
+		return 0;
+	}
+
+	int bytes = recv(mSocketID, buffer, size, 0);
+	if (bytes < 0) {
+		logg->logError(__FILE__, __LINE__, "Socket receive error");
+		handleException();
+	} else if (bytes == 0) {
+		logg->logMessage("Socket disconnected");
+		return -1;
+	}
+	return bytes;
+}
+
+// Receive exactly size bytes of data. Note, this function will block until all bytes are received
+int OlySocket::receiveNBytes(char* buffer, int size) {
+	int bytes = 0;
+	while (size > 0 && buffer != NULL) {
+		bytes = recv(mSocketID, buffer, size, 0);
+		if (bytes < 0) {
+			logg->logError(__FILE__, __LINE__, "Socket receive error");
+			handleException();
+		} else if (bytes == 0) {
+			logg->logMessage("Socket disconnected");
+			return -1;
+		}
+		buffer += bytes;
+		size -= bytes;
+	}
+	return bytes;
+}
+
+// Receive data until a carriage return, line feed, or null is encountered, or the buffer fills
+int OlySocket::receiveString(char* buffer, int size) {
+	int bytes_received = 0;
+	bool found = false;
+
+	if (buffer == 0) {
+		return 0;
+	}
+
+	while (!found && bytes_received < size) {
+		// Receive a single character
+		int bytes = recv(mSocketID, &buffer[bytes_received], 1, 0);
+		if (bytes < 0) {
+			logg->logError(__FILE__, __LINE__, "Socket receive error");
+			handleException();
+		} else if (bytes == 0) {
+			logg->logMessage("Socket disconnected");
+			return -1;
+		}
+
+		// Replace carriage returns and line feeds with zero
+		if (buffer[bytes_received] == '\n' || buffer[bytes_received] == '\r' || buffer[bytes_received] == '\0') {
+			buffer[bytes_received] = '\0';
+			found = true;
+		}
+
+		bytes_received++;
+	}
+
+	return bytes_received;
+}