Oops, forgot to add the new TtyProcess files in the last commit.

1 files changed, 91 insertions, 0 deletions

diff --git a/desktop-utilities/lumina-terminal/TtyProcess.cpp b/desktop-utilities/lumina-terminal/TtyProcess.cpp
new file mode 100644
index 00000000..1818a91b
--- /dev/null
+++ b/desktop-utilities/lumina-terminal/TtyProcess.cpp
@@ -0,0 +1,91 @@
+#include "TtyProcess.h"
+
+//Standard C library functions for PTY access/setup
+#include <stdlib.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <signal.h>
+
+TTYProcess::TTYProcess(QObject *parent) : QSerialPort(parent){
+  childProc = 0;	
+}
+
+TTYProcess::~TTYProcess(){
+  kill(childProc, SIGKILL);
+}
+		
+// === PUBLIC ===
+bool TTYProcess::start(QString prog, QStringList args){
+  //Turn the program/arguments into C-compatible arrays
+  char cprog[prog.length()]; strcpy(cprog, prog.toLocal8Bit().data());
+  char *cargs[args.length()+1];
+  for(int i=0; i<args.length()+1; i++){
+    if(i<args.length()){
+      cargs[i] = new char[ args[i].toLocal8Bit().size()+1];
+      strcpy( cargs[i], args[i].toLocal8Bit().data() );
+    }else{
+      cargs[i] = new char[1];
+      strcpy(cargs[i],"\0");
+    }
+  }
+  qDebug() << "PTY Start:" << prog;
+  //Launch the process attached to a new PTY
+  int FD = 0;
+  pid_t tmp = LaunchProcess(FD, cprog, cargs);
+  qDebug() << " - PID:" << tmp;
+  qDebug() << " - FD:" << FD;
+  if(tmp<0){ return false; } //error
+  else{
+    childProc = tmp;
+    this->setPortName( ptsname(FD) );
+    qDebug() << " - PTY:" << this->portName();
+    return this->open(QIODevice::ReadWrite);
+  }
+}
+
+// === PRIVATE ===
+pid_t TTYProcess::LaunchProcess(int& fd, char *prog, char **child_args){
+  //Returns: -1 for errors, positive value (file descriptor) for the master side of the TTY to watch	
+
+  //First open/setup a new pseudo-terminal file/device on the system (master side)
+  fd = posix_openpt(O_RDWR); //open read/write
+  if(fd<0){ return -1; } //could not create pseudo-terminal
+  int rc = grantpt(fd); //set permissions
+  if(rc!=0){ return -1; }
+  rc = unlockpt(fd); //unlock file (ready for use)
+  if(rc!=0){ return -1; }	
+  //Now fork, return the Master device and setup the child
+  pid_t PID = fork();
+  if(PID==0){
+    //SLAVE/child
+    int fds = ::open(ptsname(fd), O_RDWR); //open slave side read/write
+    ::close(fd); //close the master side from the slave thread
+	  
+    //Adjust the slave side mode to RAW
+    struct termios TSET;
+    rc = tcgetattr(fds, &TSET); //read the current settings
+    cfmakeraw(&TSET); //set the RAW mode on the settings
+    tcsetattr(fds, TCSANOW, &TSET); //apply the changed settings
+
+    //Change the controlling terminal in child thread to the slave PTY
+    ::close(0); //close current terminal standard input
+    ::close(1); //close current terminal standard output
+    ::close(2); //close current terminal standard error
+    dup(fds); // Set slave PTY as standard input (0);
+    dup(fds); // Set slave PTY as standard output (1);
+    dup(fds); // Set slave PTY as standard error (2);
+	  
+    setsid();  //Make current process new session leader (so we can set controlling terminal)
+    ioctl(0,TIOCSCTTY, 1); //Set the controlling terminal to the slave PTY
+	  
+    //Execute the designated program
+    rc = execvp(prog, child_args);
+    ::close(fds); //no need to keep original file descriptor open any more
+    exit(rc);
+  }
+  //MASTER thread (or error)
+  return PID;
+}