Process start/stop/view functionality

processWidget - shows a list of processes on one client, allows to start ans stop processes
processesDialog - shows every processWidget as a tab
processesStartDialog - starts process entered in messageEdit

added handling of new pvscommands

1 files changed, 78 insertions, 5 deletions

diff --git a/src/pvs.cpp b/src/pvs.cpp
index 2aaec8a..b343f29 100755
--- a/src/pvs.cpp
+++ b/src/pvs.cpp
@@ -183,15 +183,21 @@ void PVS::onCommand(PVSMsg cmdMessage)
     }
     if (ident.compare("SHOWPROCESSES") == 0)
     {
-        // do stuff to show processes
-    	// to test if SHOWPROCESSES command is submitted correct uncomment following lines
-    	// a messagebox will appear on the client
-    	// emit showMessage("Show Processes", "", true);
+    	_pvsServerConnection->sendMessage(PVSMsg(PVSCOMMAND, "PROCESSES", "SHOW clear")); //tell the client that we want to clear his process-list
+    	showProc();
         return;
     }
+    if (ident.compare("STARTPROCESS") == 0)
+    {
+    	QProcess *proc = new QProcess( this );
+    	proc->start(message); //we try to run the process with the name message
+    	_pvsServerConnection->sendMessage(PVSMsg(PVSCOMMAND, "PROCESSES", "START Process "+message+": started"));
+    	return;
+    }
     if (ident.compare("KILLPROCESS") == 0)
     {
-        // do stuff to kill a process
+		QProcess *proc = new QProcess( this );
+		proc->start("kill "+message); //we try to kill the process with the given ID
         return;
     }
 
@@ -658,3 +664,70 @@ QString PVS::getConfigValue(QString key)
     return _settings.value(key).toString();
 }
 
+void PVS::showProc()
+{
+	//look at procfs
+	QDir procfs("/proc");
+	QStringList proc = procfs.entryList();
+	int uid = getuid();
+	bool write;
+
+	for (int i=0;i<proc.length();i++) //every directory in /proc is checked
+	{
+		write = false;
+		QString tmp = proc.at(i);
+		QString snd = "";
+		if (!tmp.contains(QRegExp("\\D"))) //we have to check if name is number
+		{
+			QString name = "";
+			QFile file("/proc/"+tmp+QString("/status")); //read status file
+			     if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
+			         return;
+
+			     QTextStream in(&file);
+			     QString line = in.readLine();
+			     while (!line.isNull())
+			     {
+			    	 if (line.startsWith("Name:")) //to get the name of our process
+					 {
+			    		 name = line.remove(0,6);
+			    		 snd.append(tmp).append(QString("<#>")).append(line).append("<#>");
+			    		 //lets check if the process belongs to our PVS better not to show it if we dont want to crash PVS
+					 } else if (line.startsWith("Gid:")) //and to check that the process is a user process
+														 //we had to read name first because every file in /proc
+														 //has size 0 byte
+					 {
+						 line.remove(0,5);
+						 if (line.startsWith(QString::number(uid)))
+							 write = true;
+						 else break;
+
+					 }
+			         line = in.readLine();
+			     }
+			     if (write)
+			     {
+			    	 if ((name.startsWith("pvs")) || (name.startsWith("dbus")))
+			    			 write = false;
+			     }
+			     if (write) //if process belongs to user (and not to PVS) we go on
+			     {
+			    	 QFile file("/proc/"+tmp+QString("/cmdline")); //and read cmdline
+			    	 			     if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
+			    	 			         return;
+
+			    	 			     QTextStream in(&file);
+			    	 			     QString line = in.readLine();
+			    	 			     while (!line.isNull())
+			    	 			     {
+			    	 			    	 int templength = snd.length()+3;
+			    	 			    	 snd.append(line.left(150+templength)); //but only up to a length of 150-name-id-seperators
+			    	 			    	 break;
+			    	 			     }
+			     }
+			     if (write) //if process belongs to user we send the line to client
+			    	 _pvsServerConnection->sendMessage(PVSMsg(PVSCOMMAND, "PROCESSES", "SHOW "+snd));
+		}
+	}
+	_pvsServerConnection->sendMessage(PVSMsg(PVSCOMMAND, "PROCESSES", "SHOW finished")); //at the end we send that every process has been sent
+}