Add sensor monitor server and client skeletons

4 files changed, 564 insertions, 0 deletions

diff --git a/servers/sensor_monitor_server_lin/src/Makefile.am b/servers/sensor_monitor_server_lin/src/Makefile.am
new file mode 100644
index 0000000..bd6b9ee
--- /dev/null
+++ b/servers/sensor_monitor_server_lin/src/Makefile.am
@@ -0,0 +1,11 @@
+INCLUDES= $(all_includes) $(KDE_INCLUDES)/tde -I/usr/include/sasl
+KDE_CXXFLAGS = $(USE_EXCEPTIONS)
+
+bin_PROGRAMS = remotefpga_fpgaprogserver
+
+remotefpga_fpgaprogserver_SOURCES = main.cpp fpga_conn.cpp
+
+remotefpga_fpgaprogserver_METASOURCES = AUTO
+remotefpga_fpgaprogserver_LDFLAGS = $(all_libraries) $(KDE_RPATH) $(LIB_QT) -lDCOP $(LIB_TDECORE) $(LIB_TDEUI) -ltdefx $(LIB_KIO) -lktexteditor -ltdekrbsocket -ltqtrla
+
+KDE_OPTIONS = nofinal
diff --git a/servers/sensor_monitor_server_lin/src/main.cpp b/servers/sensor_monitor_server_lin/src/main.cpp
new file mode 100644
index 0000000..3a5012b
--- /dev/null
+++ b/servers/sensor_monitor_server_lin/src/main.cpp
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *   Copyright (C) 2012 by Timothy Pearson                                 *
+ *   kb9vqf@pearsoncomputing.net                                           *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <tqdatetime.h>
+#include <tqfile.h>
+#include <tqdir.h>
+
+#include <kapplication.h>
+#include <kstartupinfo.h>
+#include <kcmdlineargs.h>
+#include <kaboutdata.h>
+#include <ksimpleconfig.h>
+
+#include "sensor_conn.h"
+
+static const char description[] = I18N_NOOP("RemoteFPGA Sensor Monitor Server");
+
+static const char version[] = "v0.0.1";
+
+int main(int argc, char *argv[])
+{
+	KAboutData aboutData( "remotefpga_sensormon_server", I18N_NOOP("RemoteFPGA Sensor Monitor Server"),
+		version, description, KAboutData::License_GPL,
+		"(c) 2012, Timothy Pearson");
+		aboutData.addAuthor("Timothy Pearson",0, "kb9vqf@pearsoncomputing.net");
+	KCmdLineArgs::init( argc, argv, &aboutData );
+	KApplication::disableAutoDcopRegistration();
+
+	KApplication app(false, false);
+
+	KStartupInfo::appStarted();
+
+	KSimpleConfig config(TQDir::currentDirPath() + "/remotefpga_sensormonserver.conf", false);
+	config.setGroup("Server");
+	SensorServer fpgasvr(0, config.readNumEntry("port", 4014), &config);
+	return app.exec();
+
+}
diff --git a/servers/sensor_monitor_server_lin/src/sensor_conn.cpp b/servers/sensor_monitor_server_lin/src/sensor_conn.cpp
new file mode 100644
index 0000000..b73e480
--- /dev/null
+++ b/servers/sensor_monitor_server_lin/src/sensor_conn.cpp
@@ -0,0 +1,383 @@
+/*
+ * Remote Laboratory FPGA Server
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * (c) 2012 Timothy Pearson
+ * Raptor Engineering
+ * http://www.raptorengineeringinc.com
+ */
+
+#include <stdio.h>                /* perror() */
+#include <stdlib.h>               /* atoi() */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>               /* read() */
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/signal.h>
+#include <sys/types.h>
+
+#include <tqtimer.h>
+#include <tqfile.h>
+
+#include <klocale.h>
+
+#include "sensor_conn.h"
+
+#define ABORT_SOCKET(s) 		s->close();						\
+					s->disconnect();					\
+					delete s;						\
+					s = NULL;
+
+#define NETWORK_COMM_TIMEOUT_MS 5000
+
+/* exception handling */
+struct exit_exception {
+	int c;
+	exit_exception(int c):c(c) { }
+};
+
+enum connectionStates {
+	StateIdle			= 0,
+	StateGetFileSize		= 1,
+	StateGetFileContents		= 2,
+	StateStartProgramming		= 3,
+	StateCheckProgrammingStatus	= 4,
+	StateProgammingFinished		= 5
+};
+
+/*
+  The SensorSocket class provides a socket that is connected with a client.
+  For every client that connects to the server, the server creates a new
+  instance of this class.
+*/
+SensorSocket::SensorSocket(int sock, TQObject *parent, const char *name) :
+	TDEKerberosServerSocket(parent, name), m_criticalSection(0), m_loopTimer(NULL), m_config(static_cast<SensorServer*>(parent)->m_config), m_commandLoopState(StateIdle),
+	m_progpipe(NULL), m_progpipefd(-1), m_progErrorFlag(false), m_progDoneFlag(false)
+{
+
+	// Initialize timers
+	m_kerberosInitTimer = new TQTimer();
+	connect(m_kerberosInitTimer, SIGNAL(timeout()), this, SLOT(finishKerberosHandshake()));
+	m_servClientTimeout = new TQTimer();
+
+	setServiceName("remotefpga");
+
+	line = 0;
+	connect(this, SIGNAL(connectionClosed()), SLOT(connectionClosedHandler()));
+	connect(this, SIGNAL(connectionClosed()), parent, SLOT(remoteConnectionClosed()));
+	setSocket(sock);
+}
+
+SensorSocket::~SensorSocket() {
+	if (m_servClientTimeout) {
+		m_servClientTimeout->stop();
+		delete m_servClientTimeout;
+		m_servClientTimeout = NULL;
+	}
+	if (m_kerberosInitTimer) {
+		m_kerberosInitTimer->stop();
+		delete m_kerberosInitTimer;
+		m_kerberosInitTimer = NULL;
+	}
+	if (m_loopTimer) {
+		m_loopTimer->stop();
+		delete m_loopTimer;
+		m_loopTimer = NULL;
+	}
+}
+
+void SensorSocket::close() {
+	if (state() == TQSocket::Connected) {
+		TDEKerberosServerSocket::close();
+		connectionClosedHandler();
+		TQTimer::singleShot(0, parent(), SLOT(remoteConnectionClosed()));
+	}
+}
+
+void SensorSocket::connectionClosedHandler() {
+	printf("[DEBUG] Connection from %s closed\n\r", m_remoteHost.ascii());
+
+	if (m_criticalSection > 0) {
+		throw exit_exception(-1);
+	}
+}
+
+void SensorSocket::initiateKerberosHandshake() {
+	setUsingKerberos(true);
+	m_kerberosInitTimer->start(100, TRUE);
+}
+
+void SensorSocket::finishKerberosHandshake() {
+	if (kerberosStatus() == TDEKerberosServerSocket::KerberosInitializing) {
+		m_kerberosInitTimer->start(100, TRUE);
+		return;
+	}
+	if (kerberosStatus() == TDEKerberosServerSocket::KerberosInUse) {
+		m_config->setGroup("Security");
+		TQString masterUser = m_config->readEntry("masteruser");
+		TQString masterRealm = m_config->readEntry("masterrealm");
+		if (masterRealm == "") {
+			masterRealm = "(NULL)";
+		}
+		if ((m_authenticatedUserName != masterUser) || (m_authenticatedRealmName != masterRealm)) {
+			printf("[DEBUG] Connection from %s closed due to authentication failure (attempted connection as user %s@%s)\n\r", m_remoteHost.ascii(), masterUser.ascii(), masterRealm.ascii());
+			close();
+			return;
+		}
+
+		setDataTimeout(NETWORK_COMM_TIMEOUT_MS);
+
+		TQDataStream ds(this);
+		ds.setPrintableData(true);
+		ds << TQString("OK");
+		writeEndOfFrame();
+
+		enterCommandLoop();
+		return;
+	}
+	else {
+		printf("[DEBUG] Connection from %s closed due to Kerberos failure\n\r", m_remoteHost.ascii()); fflush(stdout);
+		close();
+		return;
+	}
+}
+
+void SensorSocket::commandLoop() {
+	bool transferred_data;
+
+	m_criticalSection++;
+	try {
+		transferred_data = false;
+		if (state() == TQSocket::Connected) {
+			if ((m_commandLoopState == StateIdle) || (m_commandLoopState == StateStartProgramming) || (m_commandLoopState == StateCheckProgrammingStatus) || (m_commandLoopState == StateProgammingFinished)) {
+				// Certain commands can come in at any time during some operations
+				if (canReadLine()) {
+					processPendingData();
+				}
+				if (canReadFrame()) {
+					TQDataStream ds(this);
+					ds.setPrintableData(true);
+					TQString command;
+					ds >> command;
+					clearFrameTail();
+					if (command == "STATUS") {
+						if (m_logMessages != "") {
+							ds << TQString("LOGMESSAGES");
+							writeEndOfFrame();
+							ds << m_logMessages;
+							writeEndOfFrame();
+							m_logMessages = "";
+						}
+						else if (m_progErrorFlag) {
+							ds << TQString("ERROR");
+							m_progErrorFlag = false;
+							writeEndOfFrame();
+						}
+						else if (m_progDoneFlag) {
+							ds << TQString("DONE");
+							ds << m_progRetCode;
+							m_progDoneFlag = false;
+							writeEndOfFrame();
+						}
+						else if (m_commandLoopState == StateIdle) {
+							ds << TQString("IDLE");
+							writeEndOfFrame();
+						}
+						else if ((m_commandLoopState == StateStartProgramming) || (m_commandLoopState == StateCheckProgrammingStatus) || (m_commandLoopState == StateProgammingFinished)) {
+							ds << TQString("PROGRAMMING");
+							writeEndOfFrame();
+						}
+						else {
+							ds << TQString("UNKNOWN");
+							writeEndOfFrame();
+						}
+					}
+					else if (m_commandLoopState == StateIdle) {
+						if (command == "FILE") {
+							m_commandLoopState = StateGetFileSize;
+						}
+						else if (command == "PROGRAM") {
+							m_commandLoopState = StateStartProgramming;
+						}
+						else {
+							printf("[WARNING] Received unknown command '%s'\n\r", command.ascii());
+						}
+					}
+					transferred_data = true;
+				}
+			}
+			if (m_commandLoopState == StateGetFileSize) {
+				if (canReadLine()) {
+					processPendingData();
+				}
+				if (canReadFrame()) {
+					TQDataStream ds(this);
+					ds.setPrintableData(true);
+					ds >> m_programmingFileSize;
+					clearFrameTail();
+					m_servClientTimeout->start(NETWORK_COMM_TIMEOUT_MS, TRUE);
+					m_commandLoopState = StateGetFileContents;
+				}
+			}
+			else if (m_commandLoopState == StateGetFileContents) {
+				if (canReadLine()) {
+					m_servClientTimeout->start(NETWORK_COMM_TIMEOUT_MS, TRUE);
+					processPendingData();
+				}
+				if (bytesAvailable() >= m_programmingFileSize) {
+					TQByteArray fileContents(m_programmingFileSize);
+					readBlock(fileContents.data(), fileContents.size());
+					m_programmingFileName = TQString("/tmp/%1#%2.dat").arg(m_remoteHost).arg(port());
+					TQFile outputFile(m_programmingFileName);
+					if (outputFile.open(IO_ReadWrite)) {
+						outputFile.writeBlock(fileContents);
+						outputFile.flush();
+						outputFile.close();
+					}
+					transferred_data = true;
+					m_commandLoopState = StateIdle;
+				}
+				else {
+					if (!m_servClientTimeout->isActive()) {
+						m_progErrorFlag = true;
+						transferred_data = true;
+						m_commandLoopState = StateIdle;
+					}
+				}
+			}
+			else if (m_commandLoopState == StateStartProgramming) {
+				// Start programming!
+
+				// Open programming process
+				m_config->setGroup("Programming");
+				TQString programmingScript = m_config->readEntry("script");
+				programmingScript.replace("%f", m_programmingFileName);
+				if (!programmingScript.contains("2>&1")) {
+					programmingScript.append(" 2>&1");
+				}
+				if ((m_progpipe = popen(programmingScript.ascii(), "r")) == NULL) {
+					m_logMessages.append(TQString("The system was unable to execute '%1'\nPlease contact your system administrator with this information").arg(programmingScript));
+					m_progErrorFlag = true;
+					transferred_data = true;
+					m_commandLoopState = StateIdle;
+				}
+				else {
+					m_progpipefd = fileno(m_progpipe);
+					fcntl(m_progpipefd, F_SETFL, O_NONBLOCK);
+				}
+				m_commandLoopState = StateCheckProgrammingStatus;
+			}
+			else if (m_commandLoopState == StateCheckProgrammingStatus) {
+				// Check programming status
+				TQCString buf;
+				buf.resize(8192);
+				ssize_t r = read(m_progpipefd, buf.data(), buf.size());
+				if ((r == -1) && (errno == EAGAIN)) {
+					// No data available yet
+				}
+				else if (r > 0) {
+					// Data was received
+					buf.data()[r] = 0;
+					m_logMessages.append(buf);
+				}
+				else {
+					// Process terminated
+					m_commandLoopState = StateProgammingFinished;
+				}
+			}
+			else if (m_commandLoopState == StateProgammingFinished) {
+				// Programming process terminated; get exit code and clean up
+				if (m_progpipe) {
+					m_progRetCode = pclose(m_progpipe);
+				}
+				else {
+					m_progRetCode = -1;
+				}
+				m_progpipe = NULL;
+				m_progpipefd = -1;
+
+				m_progDoneFlag = true;
+				m_commandLoopState = StateIdle;
+			}
+		}
+		m_criticalSection--;
+		if (transferred_data) {
+			if (m_loopTimer) m_loopTimer->start(0, TRUE);
+		}
+		else {
+			if (m_loopTimer) m_loopTimer->start(100, TRUE);
+		}
+		return;
+	}
+	catch (...) {
+		m_criticalSection--;
+		return;
+	}
+}
+
+int SensorSocket::enterCommandLoop() {
+	m_commandLoopState = StateIdle;
+	if (!m_loopTimer) {
+		m_loopTimer = new TQTimer();
+		connect(m_loopTimer, SIGNAL(timeout()), this, SLOT(commandLoop()));
+	}
+	if (m_loopTimer) m_loopTimer->start(0, TRUE);
+	return 0;
+}
+
+/*
+  The SensorServer class handles new connections to the server. For every
+  client that connects, it creates a new SensorSocket -- that instance is now
+  responsible for the communication with that client.
+*/
+SensorServer::SensorServer(TQObject* parent, int port, KSimpleConfig* config) :
+	TQServerSocket( port, 1, parent ), m_config(config), m_numberOfConnections(0) {
+
+	if ( !ok() ) {
+		printf("[ERROR] Failed to bind to port %d\n\r", port);
+		exit(1);
+	}
+
+	printf("[INFO] Server started on port %d\n\r", port); fflush(stdout);
+}
+
+SensorServer::~SensorServer() {
+	//
+}
+
+void SensorServer::newConnection(int socket) {
+	SensorSocket *s = new SensorSocket(socket, this);
+	s->m_remoteHost = s->peerAddress().toString();
+	printf("[DEBUG] New connection from %s\n\r", s->m_remoteHost.ascii());
+	if (m_numberOfConnections > 0) {
+		printf("[DEBUG] Connection from %s closed due to multiple access attempt\n\r", s->m_remoteHost.ascii());
+		ABORT_SOCKET(s)
+		return;
+	}
+	connect(s, SIGNAL(connectionClosed()), s, SLOT(deleteLater()));
+	s->initiateKerberosHandshake();
+	emit newConnect(s);
+}
+
+void SensorServer::remoteConnectionClosed() {
+	m_numberOfConnections--;
+}
\ No newline at end of file
diff --git a/servers/sensor_monitor_server_lin/src/sensor_conn.h b/servers/sensor_monitor_server_lin/src/sensor_conn.h
new file mode 100644
index 0000000..9486c6f
--- /dev/null
+++ b/servers/sensor_monitor_server_lin/src/sensor_conn.h
@@ -0,0 +1,106 @@
+/*
+ * Remote Laboratory FPGA Server
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * (c) 2012 Timothy Pearson
+ * Raptor Engineering
+ * http://www.raptorengineeringinc.com
+ */
+
+#include <tqsocket.h>
+#include <tqserversocket.h>
+#include <tqapplication.h>
+#include <tqvbox.h>
+#include <tqtextview.h>
+#include <tqlabel.h>
+#include <tqpushbutton.h>
+#include <tqtextstream.h>
+
+#include <ksimpleconfig.h>
+
+#include <tdekrbserversocket.h>
+
+#include <tqtrla.h>
+
+#define MAGIC_NUMBER 1
+#define PROTOCOL_VERSION 1
+
+class SensorServer : public TDEKerberosServerSocket
+{
+	Q_OBJECT
+
+	public:
+		SensorServer(int sock, TQObject *parent=0, const char *name=0);
+		~SensorServer();
+
+	public:
+		void close();
+		void initiateKerberosHandshake();
+		int enterCommandLoop();
+
+	private slots:
+		void finishKerberosHandshake();
+		void connectionClosedHandler();
+		void commandLoop();
+	
+	private:
+		int line;
+		int m_criticalSection;
+		TQString m_remoteHost;
+
+		TQTimer* m_kerberosInitTimer;
+		TQTimer* m_loopTimer;
+		TQTimer* m_servClientTimeout;
+
+		KSimpleConfig* m_config;
+		int m_commandLoopState;
+
+		TQ_ULONG m_programmingFileSize;
+		TQString m_programmingFileName;
+		FILE *m_progpipe;
+		int m_progpipefd;
+
+		bool m_progErrorFlag;
+		bool m_progDoneFlag;
+		TQ_INT32 m_progRetCode;
+		TQString m_logMessages;
+
+		friend class FPGAServer;
+};
+
+class FPGAServer : public TQServerSocket
+{
+	Q_OBJECT
+
+	public:
+		FPGAServer(TQObject* parent=0, int port=0, KSimpleConfig* config=0);
+		~FPGAServer();
+	
+		void newConnection(int socket);
+
+	private slots:
+		void remoteConnectionClosed();
+	
+	signals:
+		void newConnect(SensorServer*);
+
+	private:
+		KSimpleConfig* m_config;
+		int m_numberOfConnections;
+
+		friend class SensorServer;
+
+};
\ No newline at end of file