| -rw-r--r-- | noncore/apps/opie-console/MyPty.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/noncore/apps/opie-console/MyPty.cpp b/noncore/apps/opie-console/MyPty.cpp index 984e347..2570826 100644 --- a/noncore/apps/opie-console/MyPty.cpp +++ b/noncore/apps/opie-console/MyPty.cpp @@ -22,171 +22,177 @@ /*! \file */ /*! \class TEPty \brief Ptys provide a pseudo terminal connection to a program. Although closely related to pipes, these pseudo terminal connections have some ability, that makes it nessesary to uses them. Most importent, they know about changing screen sizes and UNIX job control. Within the terminal emulation framework, this class represents the host side of the terminal together with the connecting serial line. One can create many instances of this class within a program. As a side effect of using this class, a signal(2) handler is installed on SIGCHLD. \par FIXME [NOTE: much of the technical stuff below will be replaced by forkpty.] publish the SIGCHLD signal if not related to an instance. clearify TEPty::done vs. TEPty::~TEPty semantics. check if pty is restartable via run after done. \par Pseudo terminals Pseudo terminals are a unique feature of UNIX, and always come in form of pairs of devices (/dev/ptyXX and /dev/ttyXX), which are connected to each other by the operating system. One may think of them as two serial devices linked by a null-modem cable. Being based on devices the number of simultanous instances of this class is (globally) limited by the number of those device pairs, which is 256. Another technic are UNIX 98 PTY's. These are supported also, and prefered over the (obsolete) predecessor. There's a sinister ioctl(2), signal(2) and job control stuff nessesary to make everything work as it should. */ #include <qapplication.h> #include <qsocketnotifier.h> #include <qstring.h> +#include <qfile.h> #include <stdlib.h> #include <stdio.h> #include <signal.h> #include <fcntl.h> #include <unistd.h> #include <termios.h> #include <sys/types.h> #include <sys/ioctl.h> #include <sys/wait.h> #ifdef HAVE_OPENPTY #include <pty.h> #endif #include "procctl.h" #include "MyPty.h" #undef VERBOSE_DEBUG /* -------------------------------------------------------------------------- */ /*! Informs the client program about the actual size of the window. */ void MyPty::setSize(int lines, int columns) { qWarning("setting size"); struct winsize wsize; wsize.ws_row = (unsigned short)lines; wsize.ws_col = (unsigned short)columns; if(m_fd < 0) return; ioctl(m_fd,TIOCSWINSZ,(char *)&wsize); } void MyPty::donePty() { // This is code from the Qt DumbTerminal example ::close(m_fd); if (m_cpid) { kill(m_cpid, SIGHUP); //waitpid(m_cpid, &status, 0); delete m_sn_e; delete m_sn_r; m_sn_e = 0l; m_sn_r = 0l; } m_cpid = 0; m_fd = -1; // emit done(status); } const char* MyPty::deviceName() { return m_ttynam; } void MyPty::error() { // This is code from the Qt DumbTerminal example donePty(); } void MyPty::start() { char* cmd = "/bin/sh"; + + if ( QFile::exists( "/bin/bash" ) ) { + char* cmd = "/bin/bash"; + } + QStrList lis; int r =run(cmd, lis, 0, 0); r = r; } /*! start the client program. */ int MyPty::run(const char* cmd, QStrList &, const char*, int) { // This is code from the Qt DumbTerminal example m_cpid = fork(); if ( !m_cpid ) { // child - exec shell on tty for (int sig = 1; sig < NSIG; sig++) signal(sig,SIG_DFL); int ttyfd = ::open(m_ttynam, O_RDWR); dup2(ttyfd, STDIN_FILENO); dup2(ttyfd, STDOUT_FILENO); dup2(ttyfd, STDERR_FILENO); // should be done with tty, so close it ::close(ttyfd); static struct termios ttmode; if ( setsid() < 0 ) perror( "failed to set process group" ); #if defined (TIOCSCTTY) // grabbed from APUE by Stevens ioctl(STDIN_FILENO, TIOCSCTTY, 0); #endif tcgetattr( STDIN_FILENO, &ttmode ); ttmode.c_cc[VINTR] = 3; ttmode.c_cc[VERASE] = 8; tcsetattr( STDIN_FILENO, TCSANOW, &ttmode ); setenv("TERM",m_term,1); setenv("COLORTERM","0",1); if (getuid() == 0) { char msg[] = "WARNING: You are running this shell as root!\n"; write(ttyfd, msg, sizeof(msg)); } execl(cmd, cmd, 0); donePty(); exit(-1); } // parent - continue as a widget delete m_sn_r; m_sn_r = new QSocketNotifier(m_fd,QSocketNotifier::Read,this); |