| -rw-r--r-- | noncore/apps/opie-console/MyPty.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/noncore/apps/opie-console/MyPty.cpp b/noncore/apps/opie-console/MyPty.cpp index c3c58be..23d4966 100644 --- a/noncore/apps/opie-console/MyPty.cpp +++ b/noncore/apps/opie-console/MyPty.cpp @@ -48,323 +48,321 @@ 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() { QStrList lis; int r =run(m_cmd.latin1(), 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); EnvironmentMap::Iterator it; for (it = m_env.begin(); it != m_env.end(); it++) { setenv(it.key().latin1(), it.data().latin1(), 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); delete m_sn_e; m_sn_e = new QSocketNotifier(m_fd,QSocketNotifier::Exception,this); connect(m_sn_r,SIGNAL(activated(int)),this,SLOT(readPty())); connect(m_sn_e,SIGNAL(activated(int)),this,SLOT(error())); return 0; } int MyPty::openPty() { // This is code from the Qt DumbTerminal example int ptyfd = -1; #ifdef HAVE_OPENPTY int ttyfd; if ( openpty(&ptyfd,&ttyfd,ttynam,0,0) ) ptyfd = -1; else close(ttyfd); // we open the ttynam ourselves. #else for (const char* c0 = "pqrstuvwxyzabcde"; ptyfd < 0 && *c0 != 0; c0++) { for (const char* c1 = "0123456789abcdef"; ptyfd < 0 && *c1 != 0; c1++) { sprintf(m_ptynam,"/dev/pty%c%c",*c0,*c1); sprintf(m_ttynam,"/dev/tty%c%c",*c0,*c1); if ((ptyfd = ::open(m_ptynam,O_RDWR)) >= 0) { if (geteuid() != 0 && !access(m_ttynam,R_OK|W_OK) == 0) { ::close(ptyfd); ptyfd = -1; } } } } #endif if ( ptyfd < 0 ) { // qApp->exit(1); return -1; } return ptyfd; } /*! Create an instance. */ MyPty::MyPty(const Profile& prof) : m_cpid(0) { int term = prof.readNumEntry("Terminal", Profile::VT100 ); switch( term ) { default: case Profile::VT100: case Profile::VT102: m_term = "vt100"; break; case Profile::Linux: m_term = "linux"; break; case Profile::XTerm: m_term = "xterm"; break; } m_sn_e = 0l; m_sn_r = 0l; m_fd = openPty(); ProcCtl* ctl = ProcCtl::self(); Q_UNUSED(ctl); reload(prof); } /*! Destructor. Note that the related client program is not killed (yet) when a instance is deleted. */ MyPty::~MyPty() { donePty(); } QString MyPty::identifier()const { return QString::fromLatin1("term"); } QString MyPty::name()const{ return identifier(); } bool MyPty::open() { if (m_fd < 0) m_fd = openPty(); start(); return true; } void MyPty::close() { donePty(); m_fd = openPty(); } void MyPty::reload( const Profile& prof) { m_env.clear(); m_cmd = prof.readEntry("Command", "/bin/sh"); /* * Lets check if m_cmd actually * exists.... * we try to use bin/bash and if * this fails we * will fallback to /bin/sh * which should be there 100% */ - if ( !QFile::exists(QFile::encodeName(m_cmd) ) ) - if (QFile::exists("/bin/bash") ) - m_cmd = "/bin/bash"; - else + if ( m_cmd.stripWhiteSpace() == "/bin/bash" && !QFile::exists(QFile::encodeName(m_cmd) ) ) m_cmd = "/bin/sh"; + int envcount = prof.readNumEntry("EnvVars", 0); for (int i=0; i<envcount; i++) { QString name = prof.readEntry("Env_Name_" + QString::number(i), ""); QString value = prof.readEntry("Env_Value_" + QString::number(i), ""); if (!(name.isEmpty() || value.isEmpty())) { m_env.insert(name, value); } } } /*! sends len bytes through the line */ void MyPty::send(const QByteArray& ar) { #ifdef VERBOSE_DEBUG // verbose debug printf("sending bytes:\n"); for (uint i = 0; i < ar.count(); i++) printf("%c", ar[i]); printf("\n"); #endif ::write(m_fd, ar.data(), ar.count()); } /*! indicates that a block of data is received */ void MyPty::readPty() { QByteArray buf(4096); int len = ::read( m_fd, buf.data(), 4096 ); if (len == -1 || len == 0) { donePty(); return; } if (len < 0) return; buf.resize(len); emit received(buf); #ifdef VERBOSE_DEBUG // verbose debug printf("read bytes:\n"); for (uint i = 0; i < buf.count(); i++) printf("%c", buf[i]); printf("\n"); #endif } QBitArray MyPty::supports()const { QBitArray ar(3); //autoconnect ar[0] = 1; // ar[1] = 0; ar[2] = 0; return ar; } |