diff options
Diffstat (limited to 'kdecore/kpty.cpp')
| -rw-r--r-- | kdecore/kpty.cpp | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/kdecore/kpty.cpp b/kdecore/kpty.cpp deleted file mode 100644 index f6fc9d5cd..000000000 --- a/kdecore/kpty.cpp +++ /dev/null @@ -1,579 +0,0 @@ -/* - - This file is part of the KDE libraries - Copyright (C) 1997-2002 The Konsole Developers - Copyright (C) 2002 Waldo Bastian <bastian@kde.org> - Copyright (C) 2002-2003 Oswald Buddenhagen <ossi@kde.org> - - 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. -*/ - -#include <config.h> - -#include "kpty.h" -#include "kprocess.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> - -#ifdef HAVE_SYS_STROPTS_H -# include <sys/stropts.h> // Defines I_PUSH -# define _NEW_TTY_CTRL -#endif - -#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 HAVE_LIBUTIL_H -# include <libutil.h> -# define USE_LOGIN -#elif defined(HAVE_UTIL_H) -# include <util.h> -# define USE_LOGIN -#endif - -#ifdef USE_LOGIN -# include <utmp.h> -#endif - -#ifdef HAVE_TERMIOS_H -/* for HP-UX (some versions) the extern C is needed, and for other - platforms it doesn't hurt */ -extern "C" { -# include <termios.h> -} -#endif - -#if !defined(__osf__) -# ifdef HAVE_TERMIO_H -/* needed at least on AIX */ -# include <termio.h> -# endif -#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 -#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 -#endif - -#if defined (_HPUX_SOURCE) -# define _TERMIOS_INCLUDED -# include <bsdtty.h> -#endif - -#if defined(HAVE_PTY_H) -# include <pty.h> -#endif - -#include <kdebug.h> -#include <kstandarddirs.h> // locate - -#ifndef CINTR -#define CINTR 0x03 -#endif -#ifndef CQUIT -#define CQUIT 0x1c -#endif -#ifndef CERASE -#define CERASE 0x7f -#endif - -#define TTY_GROUP "tty" - -/////////////////////// -// private functions // -/////////////////////// - -#ifdef HAVE_UTEMPTER -class KProcess_Utmp : public KProcess -{ -public: - int commSetupDoneC() - { - dup2(cmdFd, 0); - dup2(cmdFd, 1); - dup2(cmdFd, 3); - return 1; - } - int cmdFd; -}; -#endif - -#define BASE_CHOWN "kgrantpty" - - - -////////////////// -// private data // -////////////////// - -struct KPtyPrivate { - KPtyPrivate() : - xonXoff(false), - utf8(false), - masterFd(-1), slaveFd(-1) - { - memset(&winSize, 0, sizeof(winSize)); - winSize.ws_row = 24; - winSize.ws_col = 80; - } - - bool xonXoff : 1; - bool utf8 : 1; - int masterFd; - int slaveFd; - struct winsize winSize; - - TQCString ttyName; -}; - -///////////////////////////// -// public member functions // -///////////////////////////// - -KPty::KPty() -{ - d = new KPtyPrivate; -} - -KPty::~KPty() -{ - close(); - delete d; -} - -bool KPty::setPty(int pty_master) -{ - kdWarning(175) - << "setPty()" << endl; - // a pty is already open - if(d->masterFd >= 0) { - kdWarning(175) - << "d->masterFd >= 0" << endl; - return false; - } - d->masterFd = pty_master; - return _attachPty(pty_master); -} - -bool KPty::_attachPty(int pty_master) -{ - TQCString ptyName; - - kdWarning(175) - << "_attachPty() " << pty_master << endl; -#if defined(HAVE_PTSNAME) && defined(HAVE_GRANTPT) - char *ptsn = ptsname(d->masterFd); - if (ptsn) { - grantpt(d->masterFd); - d->ttyName = ptsn; - } else { - ::close(d->masterFd); - d->masterFd = -1; - } -#endif - - 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))) && - !chownpty(true)) - { - kdWarning(175) - << "chownpty failed for device " << ptyName << "::" << d->ttyName - << "\nThis means the communication can be eavesdropped." << endl; - } - -#ifdef BSD - revoke(d->ttyName.data()); -#endif - -#ifdef HAVE_UNLOCKPT - unlockpt(d->masterFd); -#endif - - d->slaveFd = ::open(d->ttyName.data(), O_RDWR | O_NOCTTY); - if (d->slaveFd < 0) - { - kdWarning(175) << "Can't open slave pseudo teletype" << endl; - ::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 - - // set xon/xoff & control keystrokes - // without the '::' some version of HP-UX thinks, this declares - // the struct in this class, in this method, and fails to find - // the correct tc[gs]etattr - struct ::termios ttmode; - - _tcgetattr(d->slaveFd, &ttmode); - - if (!d->xonXoff) - ttmode.c_iflag &= ~(IXOFF | IXON); - else - ttmode.c_iflag |= (IXOFF | IXON); - -#ifdef IUTF8 - if (!d->utf8) - ttmode.c_iflag &= ~IUTF8; - else - ttmode.c_iflag |= IUTF8; -#endif - - ttmode.c_cc[VINTR] = CINTR; - ttmode.c_cc[VQUIT] = CQUIT; - ttmode.c_cc[VERASE] = CERASE; - - _tcsetattr(d->slaveFd, &ttmode); - - // set screen size - ioctl(d->slaveFd, TIOCSWINSZ, (char *)&d->winSize); - - fcntl(d->masterFd, F_SETFD, FD_CLOEXEC); - fcntl(d->slaveFd, F_SETFD, FD_CLOEXEC); - - return true; -} - -bool KPty::open() -{ - if (d->masterFd >= 0) - return true; - - TQCString 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. - -#if defined(HAVE_PTSNAME) && defined(HAVE_GRANTPT) -#ifdef _AIX - d->masterFd = ::open("/dev/ptc",O_RDWR); -#else - d->masterFd = ::open("/dev/ptmx",O_RDWR); -#endif - if (d->masterFd >= 0) - { - char *ptsn = ptsname(d->masterFd); - if (ptsn) { - grantpt(d->masterFd); - d->ttyName = ptsn; - goto gotpty; - } else { - ::close(d->masterFd); - d->masterFd = -1; - } - } -#endif - - // Linux device names, FIXME: Trouble on other systems? - for (const char* s3 = "pqrstuvwxyzabcdefghijklmno"; *s3; s3++) - { - for (const char* s4 = "0123456789abcdefghijklmnopqrstuvwxyz"; *s4; s4++) - { - ptyName.sprintf("/dev/pty%c%c", *s3, *s4); - d->ttyName.sprintf("/dev/tty%c%c", *s3, *s4); - - d->masterFd = ::open(ptyName.data(), O_RDWR); - if (d->masterFd >= 0) - { -#ifdef __sun - /* 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 /* sun */ - 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 (); - - chown(d->ttyName.data(), getuid(), gid); - chmod(d->ttyName.data(), S_IRUSR|S_IWUSR|S_IWGRP); - } - goto gotpty; - } - ::close(d->masterFd); - d->masterFd = -1; - } - } - } - - kdWarning(175) << "Can't open a pseudo teletype" << endl; - return false; - - gotpty: - return _attachPty(d->masterFd); - - return true; -} - -void KPty::close() -{ - if (d->masterFd < 0) - return; - // 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)) { - 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); - chownpty(false); - } - } - ::close(d->slaveFd); - ::close(d->masterFd); - d->masterFd = d->slaveFd = -1; -} - -void KPty::setCTty() -{ - // Setup job control ////////////////////////////////// - - // Become session leader, process group leader, - // and get rid of the old controlling terminal. - setsid(); - - // make our slave pty the new controlling terminal. -#ifdef TIOCSCTTY - ioctl(d->slaveFd, TIOCSCTTY, 0); -#else - // SVR4 hack: the first tty opened after setsid() becomes controlling tty - ::close(::open(d->ttyName, O_WRONLY, 0)); -#endif - - // make our new process group the foreground group on the pty - int pgrp = getpid(); -#if defined(_POSIX_VERSION) || defined(__svr4__) - tcsetpgrp (d->slaveFd, pgrp); -#elif defined(TIOCSPGRP) - ioctl(d->slaveFd, TIOCSPGRP, (char *)&pgrp); -#endif -} - -void KPty::login(const char *user, const char *remotehost) -{ -#ifdef HAVE_UTEMPTER - KProcess_Utmp utmp; - utmp.cmdFd = d->masterFd; - utmp << "/usr/lib/utempter/utempter" << "add"; - if (remotehost) - utmp << remotehost; - utmp.start(KProcess::Block); - Q_UNUSED(user); - Q_UNUSED(remotehost); -#elif defined(USE_LOGIN) - const char *str_ptr; - struct utmp l_struct; - memset(&l_struct, 0, sizeof(struct utmp)); - // note: strncpy without terminators _is_ correct here. man 4 utmp - - if (user) - strncpy(l_struct.ut_name, user, UT_NAMESIZE); - - if (remotehost) - strncpy(l_struct.ut_host, remotehost, UT_HOSTSIZE); - -# ifndef __GLIBC__ - str_ptr = d->ttyName.data(); - if (!memcmp(str_ptr, "/dev/", 5)) - str_ptr += 5; - strncpy(l_struct.ut_line, str_ptr, UT_LINESIZE); -# endif - - // Handle 64-bit time_t properly, where it may be larger - // than the integral type of ut_time. - { - time_t ut_time_temp; - time(&ut_time_temp); - l_struct.ut_time=ut_time_temp; - } - - ::login(&l_struct); -#else - Q_UNUSED(user); - Q_UNUSED(remotehost); -#endif -} - -void KPty::logout() -{ -#ifdef HAVE_UTEMPTER - KProcess_Utmp utmp; - utmp.cmdFd = d->masterFd; - utmp << "/usr/lib/utempter/utempter" << "del"; - utmp.start(KProcess::Block); -#elif defined(USE_LOGIN) - const char *str_ptr = d->ttyName.data(); - if (!memcmp(str_ptr, "/dev/", 5)) - str_ptr += 5; -# ifdef __GLIBC__ - else { - const char *sl_ptr = strrchr(str_ptr, '/'); - if (sl_ptr) - str_ptr = sl_ptr + 1; - } -# endif - ::logout(str_ptr); -#endif -} - -void KPty::setWinSize(int lines, int columns) -{ - d->winSize.ws_row = (unsigned short)lines; - d->winSize.ws_col = (unsigned short)columns; - if (d->masterFd >= 0) - ioctl( d->masterFd, TIOCSWINSZ, (char *)&d->winSize ); -} - -void KPty::setXonXoff(bool useXonXoff) -{ - d->xonXoff = useXonXoff; - if (d->masterFd >= 0) { - // without the '::' some version of HP-UX thinks, this declares - // the struct in this class, in this method, and fails to find - // the correct tc[gs]etattr - struct ::termios ttmode; - - _tcgetattr(d->masterFd, &ttmode); - - if (!useXonXoff) - ttmode.c_iflag &= ~(IXOFF | IXON); - else - ttmode.c_iflag |= (IXOFF | IXON); - - _tcsetattr(d->masterFd, &ttmode); - } -} - -void KPty::setUtf8Mode(bool useUtf8) -{ - d->utf8 = useUtf8; -#ifdef IUTF8 - if (d->masterFd >= 0) { - // without the '::' some version of HP-UX thinks, this declares - // the struct in this class, in this method, and fails to find - // the correct tc[gs]etattr - struct ::termios ttmode; - - _tcgetattr(d->masterFd, &ttmode); - - if (!useUtf8) - ttmode.c_iflag &= ~IUTF8; - else - ttmode.c_iflag |= IUTF8; - - _tcsetattr(d->masterFd, &ttmode); - } -#endif -} - -const char *KPty::ttyName() const -{ - return d->ttyName.data(); -} - -int KPty::masterFd() const -{ - return d->masterFd; -} - -int KPty::slaveFd() const -{ - return d->slaveFd; -} - -// private -bool KPty::chownpty(bool grant) -{ - KProcess proc; - proc << locate("exe", BASE_CHOWN) << (grant?"--grant":"--revoke") << TQString::number(d->masterFd); - return proc.start(KProcess::Block) && proc.normalExit() && !proc.exitStatus(); -} - |