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view libgui/qterminal/libqterminal/unix/kpty.cpp @ 21301:40de9f8f23a6
Use '#include "config.h"' rather than <config.h>.
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octave-config.in.cc:
Use '#include "config.h"' rather than <config.h>.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 18 Feb 2016 13:34:50 -0800 |
parents | 92c0fead20da |
children | 2d3972b802ff |
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/* This file is part of the KDE libraries Copyright (C) 2002, 2013 Waldo Bastian <bastian@kde.org> Copyright (C) 2002-2003,2007 Oswald Buddenhagen <ossi@kde.org> Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008 This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "unix/kpty_p.h" #ifdef __sgi #define __svr4__ #endif #ifdef __osf__ #define _OSF_SOURCE #include <float.h> #endif #ifdef _AIX #define _ALL_SOURCE #endif // __USE_XOPEN isn't defined by default in ICC // (needed for ptsname(), grantpt() and unlockpt()) #ifdef __INTEL_COMPILER # ifndef __USE_XOPEN # define __USE_XOPEN # endif #endif #include <sys/types.h> #include <sys/ioctl.h> #include <sys/time.h> #include <sys/resource.h> #include <sys/stat.h> #include <sys/param.h> #include <errno.h> #include <fcntl.h> #include <time.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <grp.h> #ifdef Q_OS_MAC # include <util.h> #else # if defined(HAVE_PTY_H) # include <pty.h> # endif # ifdef HAVE_LIBUTIL_H # include <libutil.h> # elif defined(HAVE_UTIL_H) # include <util.h> # endif #endif /* #ifdef HAVE_UTEMPTER extern "C" { # include <utempter.h> } #else # include <utmp.h> # ifdef HAVE_UTMPX # include <utmpx.h> # endif # if !defined(_PATH_UTMPX) && defined(_UTMPX_FILE) # define _PATH_UTMPX _UTMPX_FILE # endif # if !defined(_PATH_WTMPX) && defined(_WTMPX_FILE) # define _PATH_WTMPX _WTMPX_FILE # endif #endif */ /* for HP-UX (some versions) the extern C is needed, and for other platforms it doesn't hurt */ extern "C" { #include <termios.h> #if defined(HAVE_TERMIO_H) # include <termio.h> // struct winsize on some systems #endif } #if defined (_HPUX_SOURCE) # define _TERMIOS_INCLUDED # include <bsdtty.h> #endif #ifdef HAVE_SYS_STROPTS_H # include <sys/stropts.h> // Defines I_PUSH # define _NEW_TTY_CTRL #endif #if defined(HAVE_TCGETATTR) # define _tcgetattr(fd, ttmode) tcgetattr(fd, ttmode) #elif defined(TIOCGETA) # define _tcgetattr(fd, ttmode) ioctl(fd, TIOCGETA, (char *)ttmode) #elif defined(TCGETS) # define _tcgetattr(fd, ttmode) ioctl(fd, TCGETS, (char *)ttmode) #else # error No method available to get terminal attributes #endif #if defined(HAVE_TCSETATTR) && defined(TCSANOW) # define _tcsetattr(fd, ttmode) tcsetattr(fd, TCSANOW, ttmode) #elif defined(TIOCSETA) # define _tcsetattr(fd, ttmode) ioctl(fd, TIOCSETA, (char *)ttmode) #elif defined(TCSETS) # define _tcsetattr(fd, ttmode) ioctl(fd, TCSETS, (char *)ttmode) #else # error No method available to set terminal attributes #endif #include <QtCore> // not defined on HP-UX for example #ifndef CTRL # define CTRL(x) ((x) & 037) #endif #define TTY_GROUP "tty" #ifndef PATH_MAX # ifdef MAXPATHLEN # define PATH_MAX MAXPATHLEN # else # define PATH_MAX 1024 # endif #endif /////////////////////// // private functions // /////////////////////// ////////////////// // private data // ////////////////// KPtyPrivate::KPtyPrivate(KPty* parent) : masterFd(-1), slaveFd(-1), ownMaster(true), q_ptr(parent) { } KPtyPrivate::KPtyPrivate(KPty *parent, int _masterFd, int _slaveFd): masterFd(_masterFd), slaveFd(_slaveFd), ownMaster(true), q_ptr(parent) { } KPtyPrivate::~KPtyPrivate() { } bool KPtyPrivate::chownpty(bool) { // return !QProcess::execute(KStandardDirs::findExe("kgrantpty"), // QStringList() << (grant?"--grant":"--revoke") << QString::number(masterFd)); return true; } ///////////////////////////// // public member functions // ///////////////////////////// KPty::KPty() : d_ptr(new KPtyPrivate(this)) { } KPty::KPty(int masterFd, int slaveFd) : d_ptr(new KPtyPrivate(this, masterFd, slaveFd)) { } KPty::KPty(KPtyPrivate *d) : d_ptr(d) { d_ptr->q_ptr = this; } KPty::~KPty() { close(); delete d_ptr; } bool KPty::open() { Q_D(KPty); if (d->masterFd >= 0) { return true; } d->ownMaster = true; QByteArray ptyName; // Find a master pty that we can open //////////////////////////////// // Because not all the pty animals are created equal, they want to // be opened by several different methods. // We try, as we know them, one by one. #ifdef HAVE_OPENPTY char ptsn[PATH_MAX]; if (::openpty( &d->masterFd, &d->slaveFd, ptsn, 0, 0)) { d->masterFd = -1; d->slaveFd = -1; qWarning() << "Can't open a pseudo teletype"; return false; } d->ttyName = ptsn; #else #ifdef HAVE__GETPTY // irix char *ptsn = _getpty(&d->masterFd, O_RDWR|O_NOCTTY, S_IRUSR|S_IWUSR, 0); if (ptsn) { d->ttyName = ptsn; goto grantedpt; } #elif defined(HAVE_PTSNAME) || defined(TIOCGPTN) #ifdef HAVE_POSIX_OPENPT d->masterFd = ::posix_openpt(O_RDWR|O_NOCTTY); #elif defined(HAVE_GETPT) d->masterFd = ::getpt(); #elif defined(PTM_DEVICE) d->masterFd = ::open(PTM_DEVICE, O_RDWR|O_NOCTTY); #else # error No method to open a PTY master detected. #endif if (d->masterFd >= 0) { #ifdef HAVE_PTSNAME char *ptsn = ptsname(d->masterFd); if (ptsn) { d->ttyName = ptsn; #else int ptyno; if (!ioctl(d->masterFd, TIOCGPTN, &ptyno)) { char buf[32]; sprintf(buf, "/dev/pts/%d", ptyno); d->ttyName = buf; #endif #ifdef HAVE_GRANTPT if (!grantpt(d->masterFd)) goto grantedpt; #else goto gotpty; #endif } ::close(d->masterFd); d->masterFd = -1; } #endif // HAVE_PTSNAME || TIOCGPTN // Linux device names, FIXME: Trouble on other systems? for (const char* s3 = "pqrstuvwxyzabcde"; *s3; s3++) { for (const char* s4 = "0123456789abcdef"; *s4; s4++) { ptyName = QString().sprintf("/dev/pty%c%c", *s3, *s4).toAscii(); d->ttyName = QString().sprintf("/dev/tty%c%c", *s3, *s4).toAscii(); d->masterFd = ::open(ptyName.data(), O_RDWR); if (d->masterFd >= 0) { #ifdef Q_OS_SOLARIS /* Need to check the process group of the pty. * If it exists, then the slave pty is in use, * and we need to get another one. */ int pgrp_rtn; if (ioctl(d->masterFd, TIOCGPGRP, &pgrp_rtn) == 0 || errno != EIO) { ::close(d->masterFd); d->masterFd = -1; continue; } #endif /* Q_OS_SOLARIS */ if (!access(d->ttyName.data(),R_OK|W_OK)) // checks availability based on permission bits { if (!geteuid()) { struct group* p = getgrnam(TTY_GROUP); if (!p) p = getgrnam("wheel"); gid_t gid = p ? p->gr_gid : getgid (); if (!chown(d->ttyName.data(), getuid(), gid)) { chmod(d->ttyName.data(), S_IRUSR|S_IWUSR|S_IWGRP); } } goto gotpty; } ::close(d->masterFd); d->masterFd = -1; } } } qWarning() << "Can't open a pseudo teletype"; return false; gotpty: struct stat st; if (stat(d->ttyName.data(), &st)) return false; // this just cannot happen ... *cough* Yeah right, I just // had it happen when pty #349 was allocated. I guess // there was some sort of leak? I only had a few open. if (((st.st_uid != getuid()) || (st.st_mode & (S_IRGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH))) && !d->chownpty(true)) { qWarning() << "chownpty failed for device " << ptyName << "::" << d->ttyName << "\nThis means the communication can be eavesdropped." << endl; } #if defined(HAVE_GRANTPT) || defined(HAVE__GETPTY) grantedpt: #endif #ifdef HAVE_REVOKE revoke(d->ttyName.data()); #endif #ifdef HAVE_UNLOCKPT unlockpt(d->masterFd); #elif defined(TIOCSPTLCK) int flag = 0; ioctl(d->masterFd, TIOCSPTLCK, &flag); #endif d->slaveFd = ::open(d->ttyName.data(), O_RDWR | O_NOCTTY); if (d->slaveFd < 0) { qWarning() << "Can't open slave pseudo teletype"; ::close(d->masterFd); d->masterFd = -1; return false; } #if (defined(__svr4__) || defined(__sgi__)) // Solaris ioctl(d->slaveFd, I_PUSH, "ptem"); ioctl(d->slaveFd, I_PUSH, "ldterm"); #endif #endif /* HAVE_OPENPTY */ fcntl(d->masterFd, F_SETFD, FD_CLOEXEC); fcntl(d->slaveFd, F_SETFD, FD_CLOEXEC); struct ::termios t; tcGetAttr(&t); t.c_iflag &= ~IXON; t.c_lflag &= ~ECHOCTL; tcSetAttr(&t); return true; } void KPty::closeSlave() { Q_D(KPty); if (d->slaveFd < 0) return; ::close(d->slaveFd); d->slaveFd = -1; } void KPty::close() { Q_D(KPty); if (d->masterFd < 0) return; closeSlave(); if (d->ownMaster) { #ifndef HAVE_OPENPTY // don't bother resetting unix98 pty, it will go away after closing master anyway. if (memcmp(d->ttyName.data(), "/dev/pts/", 9)) { if (!geteuid()) { struct stat st; if (!stat(d->ttyName.data(), &st)) { if (!chown(d->ttyName.data(), 0, st.st_gid == getgid() ? 0 : -1)) { chmod(d->ttyName.data(), S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH); } } } else { fcntl(d->masterFd, F_SETFD, 0); d->chownpty(false); } } #endif } ::close(d->masterFd); d->masterFd = -1; } // XXX Supposedly, tc[gs]etattr do not work with the master on Solaris. // Please verify. bool KPty::tcGetAttr(struct ::termios *ttmode) const { Q_D(const KPty); return _tcgetattr(d->masterFd, ttmode) == 0; } bool KPty::tcSetAttr(struct ::termios *ttmode) { Q_D(KPty); return _tcsetattr(d->masterFd, ttmode) == 0; } bool KPty::setWinSize(int lines, int columns) { Q_D(KPty); struct winsize winSize; memset(&winSize, 0, sizeof(winSize)); winSize.ws_row = (unsigned short)lines; winSize.ws_col = (unsigned short)columns; return ioctl(d->masterFd, TIOCSWINSZ, (char *)&winSize) == 0; } bool KPty::setEcho(bool echo) { struct ::termios ttmode; if (!tcGetAttr(&ttmode)) return false; if (!echo) ttmode.c_lflag &= ~ECHO; else ttmode.c_lflag |= ECHO; return tcSetAttr(&ttmode); } const char *KPty::ttyName() const { Q_D(const KPty); return d->ttyName.data(); } int KPty::masterFd() const { Q_D(const KPty); return d->masterFd; } int KPty::slaveFd() const { Q_D(const KPty); return d->slaveFd; }