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-rw-r--r--kdesu/process.cpp626
1 files changed, 0 insertions, 626 deletions
diff --git a/kdesu/process.cpp b/kdesu/process.cpp
deleted file mode 100644
index d52308f63..000000000
--- a/kdesu/process.cpp
+++ /dev/null
@@ -1,626 +0,0 @@
-/* vi: ts=8 sts=4 sw=4
- *
- * $Id$
- *
- * This file is part of the KDE project, module tdesu.
- * Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org>
- *
- * This file contains code from TEShell.C of the KDE konsole.
- * Copyright (c) 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
- *
- * This is free software; you can use this library under the GNU Library
- * General Public License, version 2. See the file "COPYING.LIB" for the
- * exact licensing terms.
- *
- * process.cpp: Functionality to build a front end to password asking
- * terminal programs.
- */
-
-#include <config.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <errno.h>
-#include <string.h>
-#include <termios.h>
-#include <signal.h>
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/ioctl.h>
-
-#if defined(__SVR4) && defined(sun)
-#include <stropts.h>
-#include <sys/stream.h>
-#endif
-
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h> // Needed on some systems.
-#endif
-
-#include <tqglobal.h>
-#include <tqcstring.h>
-#include <tqfile.h>
-
-#include <kconfig.h>
-#include <kdebug.h>
-#include <kstandarddirs.h>
-
-#include "process.h"
-#include "tdesu_pty.h"
-#include "kcookie.h"
-
-int PtyProcess::waitMS(int fd,int ms)
-{
- struct timeval tv;
- tv.tv_sec = 0;
- tv.tv_usec = 1000*ms;
-
- fd_set fds;
- FD_ZERO(&fds);
- FD_SET(fd,&fds);
- return select(fd+1, &fds, 0L, 0L, &tv);
-}
-
-/*
-** Basic check for the existence of @p pid.
-** Returns true iff @p pid is an extant process.
-*/
-bool PtyProcess::checkPid(pid_t pid)
-{
- KConfig* config = KGlobal::config();
- config->setGroup("super-user-command");
- TQString superUserCommand = config->readEntry("super-user-command", DEFAULT_SUPER_USER_COMMAND);
- //sudo does not accept signals from user so we except it
- if (superUserCommand == "sudo") {
- return true;
- } else {
- return kill(pid,0) == 0;
- }
-}
-
-/*
-** Check process exit status for process @p pid.
-** On error (no child, no exit), return Error (-1).
-** If child @p pid has exited, return its exit status,
-** (which may be zero).
-** If child @p has not exited, return NotExited (-2).
-*/
-
-int PtyProcess::checkPidExited(pid_t pid)
-{
- int state, ret;
- ret = waitpid(pid, &state, WNOHANG);
-
- if (ret < 0)
- {
- kdError(900) << k_lineinfo << "waitpid(): " << perror << "\n";
- return Error;
- }
- if (ret == pid)
- {
- if (WIFEXITED(state))
- return WEXITSTATUS(state);
- return Killed;
- }
-
- return NotExited;
-}
-
-
-class PtyProcess::PtyProcessPrivate
-{
-public:
- QCStringList env;
-};
-
-
-PtyProcess::PtyProcess()
-{
- m_bTerminal = false;
- m_bErase = false;
- m_pPTY = 0L;
- d = new PtyProcessPrivate;
-}
-
-
-int PtyProcess::init()
-{
- delete m_pPTY;
- m_pPTY = new PTY();
- m_Fd = m_pPTY->getpt();
- if (m_Fd < 0)
- return -1;
- if ((m_pPTY->grantpt() < 0) || (m_pPTY->unlockpt() < 0))
- {
- kdError(900) << k_lineinfo << "Master setup failed.\n";
- m_Fd = -1;
- return -1;
- }
- m_TTY = m_pPTY->ptsname();
- m_Inbuf.resize(0);
- return 0;
-}
-
-
-PtyProcess::~PtyProcess()
-{
- delete m_pPTY;
- delete d;
-}
-
-/** Set additinal environment variables. */
-void PtyProcess::setEnvironment( const QCStringList &env )
-{
- d->env = env;
-}
-
-const QCStringList& PtyProcess::environment() const
-{
- return d->env;
-}
-
-/*
- * Read one line of input. The terminal is in canonical mode, so you always
- * read a line at at time, but it's possible to receive multiple lines in
- * one time.
- */
-
-TQCString PtyProcess::readLine(bool block)
-{
- int pos;
- TQCString ret;
-
- if (!m_Inbuf.isEmpty())
- {
- pos = m_Inbuf.find('\n');
- if (pos == -1)
- {
- ret = m_Inbuf;
- m_Inbuf.resize(0);
- } else
- {
- ret = m_Inbuf.left(pos);
- m_Inbuf = m_Inbuf.mid(pos+1);
- }
- return ret;
- }
-
- int flags = fcntl(m_Fd, F_GETFL);
- if (flags < 0)
- {
- kdError(900) << k_lineinfo << "fcntl(F_GETFL): " << perror << "\n";
- return ret;
- }
- int oflags = flags;
- if (block)
- flags &= ~O_NONBLOCK;
- else
- flags |= O_NONBLOCK;
-
- if ((flags != oflags) && (fcntl(m_Fd, F_SETFL, flags) < 0))
- {
- // We get an error here when the child process has closed
- // the file descriptor already.
- return ret;
- }
-
- int nbytes;
- char buf[256];
- while (1)
- {
- nbytes = read(m_Fd, buf, 255);
- if (nbytes == -1)
- {
- if (errno == EINTR)
- continue;
- else break;
- }
- if (nbytes == 0)
- break; // eof
-
- buf[nbytes] = '\000';
- m_Inbuf += buf;
-
- pos = m_Inbuf.find('\n');
- if (pos == -1)
- {
- ret = m_Inbuf;
- m_Inbuf.resize(0);
- } else
- {
- ret = m_Inbuf.left(pos);
- m_Inbuf = m_Inbuf.mid(pos+1);
- }
- break;
- }
-
- return ret;
-}
-
-TQCString PtyProcess::readAll(bool block)
-{
- TQCString ret;
-
- if (!m_Inbuf.isEmpty())
- {
- // if there is still something in the buffer, we need not block.
- // we should still try to read any further output, from the fd, though.
- block = false;
- ret = m_Inbuf;
- m_Inbuf.resize(0);
- }
-
- int flags = fcntl(m_Fd, F_GETFL);
- if (flags < 0)
- {
- kdError(900) << k_lineinfo << "fcntl(F_GETFL): " << perror << "\n";
- return ret;
- }
- int oflags = flags;
- if (block)
- flags &= ~O_NONBLOCK;
- else
- flags |= O_NONBLOCK;
-
- if ((flags != oflags) && (fcntl(m_Fd, F_SETFL, flags) < 0))
- {
- // We get an error here when the child process has closed
- // the file descriptor already.
- return ret;
- }
-
- int nbytes;
- char buf[256];
- while (1)
- {
- nbytes = read(m_Fd, buf, 255);
- if (nbytes == -1)
- {
- if (errno == EINTR)
- continue;
- else break;
- }
- if (nbytes == 0)
- break; // eof
-
- buf[nbytes] = '\000';
- ret += buf;
- break;
- }
-
- return ret;
-}
-
-
-void PtyProcess::writeLine(const TQCString &line, bool addnl)
-{
- if (!line.isEmpty())
- write(m_Fd, line, line.length());
- if (addnl)
- write(m_Fd, "\n", 1);
-}
-
-
-void PtyProcess::unreadLine(const TQCString &line, bool addnl)
-{
- TQCString tmp = line;
- if (addnl)
- tmp += '\n';
- if (!tmp.isEmpty())
- m_Inbuf.prepend(tmp);
-}
-
-/*
- * Fork and execute the command. This returns in the parent.
- */
-
-int PtyProcess::exec(const TQCString &command, const QCStringList &args)
-{
- kdDebug(900) << k_lineinfo << "Running `" << command << "'\n";
-
- if (init() < 0)
- return -1;
-
- // Open the pty slave before forking. See SetupTTY()
- int slave = open(m_TTY, O_RDWR);
- if (slave < 0)
- {
- kdError(900) << k_lineinfo << "Could not open slave pty.\n";
- return -1;
- }
-
- if ((m_Pid = fork()) == -1)
- {
- kdError(900) << k_lineinfo << "fork(): " << perror << "\n";
- return -1;
- }
-
- // Parent
- if (m_Pid)
- {
- close(slave);
- return 0;
- }
-
- // Child
- if (SetupTTY(slave) < 0)
- _exit(1);
-
- for(QCStringList::ConstIterator it = d->env.begin();
- it != d->env.end(); it++)
- {
- putenv(const_cast<TQCString&>(*it).data());
- }
- unsetenv("TDE_FULL_SESSION");
-
- // set temporarily LC_ALL to C, for su (to be able to parse "Password:")
- const char* old_lc_all = getenv( "LC_ALL" );
- if( old_lc_all != NULL )
- setenv( "KDESU_LC_ALL", old_lc_all, 1 );
- else
- unsetenv( "KDESU_LC_ALL" );
- setenv("LC_ALL", "C", 1);
-
- // From now on, terminal output goes through the tty.
-
- TQCString path;
- if (command.contains('/'))
- path = command;
- else
- {
- TQString file = KStandardDirs::findExe(command);
- if (file.isEmpty())
- {
- kdError(900) << k_lineinfo << command << " not found\n";
- _exit(1);
- }
- path = TQFile::encodeName(file);
- }
-
- const char **argp = (const char **)malloc((args.count()+2)*sizeof(char *));
- int i = 0;
- argp[i++] = path;
- for (QCStringList::ConstIterator it=args.begin(); it!=args.end(); ++it)
- argp[i++] = *it;
-
- argp[i] = 0L;
-
- execv(path, (char * const *)argp);
- kdError(900) << k_lineinfo << "execv(\"" << path << "\"): " << perror << "\n";
- _exit(1);
- return -1; // Shut up compiler. Never reached.
-}
-
-
-/*
- * Wait until the terminal is set into no echo mode. At least one su
- * (RH6 w/ Linux-PAM patches) sets noecho mode AFTER writing the Password:
- * prompt, using TCSAFLUSH. This flushes the terminal I/O queues, possibly
- * taking the password with it. So we wait until no echo mode is set
- * before writing the password.
- * Note that this is done on the slave fd. While Linux allows tcgetattr() on
- * the master side, Solaris doesn't.
- */
-
-int PtyProcess::WaitSlave()
-{
- int slave = open(m_TTY, O_RDWR);
- if (slave < 0)
- {
- kdError(900) << k_lineinfo << "Could not open slave tty.\n";
- return -1;
- }
-
- kdDebug(900) << k_lineinfo << "Child pid " << m_Pid << endl;
-
- struct termios tio;
- while (1)
- {
- if (!checkPid(m_Pid))
- {
- close(slave);
- return -1;
- }
- if (tcgetattr(slave, &tio) < 0)
- {
- kdError(900) << k_lineinfo << "tcgetattr(): " << perror << "\n";
- close(slave);
- return -1;
- }
- if (tio.c_lflag & ECHO)
- {
- kdDebug(900) << k_lineinfo << "Echo mode still on.\n";
- waitMS(slave,100);
- continue;
- }
- break;
- }
- close(slave);
- return 0;
-}
-
-
-int PtyProcess::enableLocalEcho(bool enable)
-{
- int slave = open(m_TTY, O_RDWR);
- if (slave < 0)
- {
- kdError(900) << k_lineinfo << "Could not open slave tty.\n";
- return -1;
- }
- struct termios tio;
- if (tcgetattr(slave, &tio) < 0)
- {
- kdError(900) << k_lineinfo << "tcgetattr(): " << perror << "\n";
- close(slave); return -1;
- }
- if (enable)
- tio.c_lflag |= ECHO;
- else
- tio.c_lflag &= ~ECHO;
- if (tcsetattr(slave, TCSANOW, &tio) < 0)
- {
- kdError(900) << k_lineinfo << "tcsetattr(): " << perror << "\n";
- close(slave); return -1;
- }
- close(slave);
- return 0;
-}
-
-
-/*
- * Copy output to stdout until the child process exists, or a line of output
- * matches `m_Exit'.
- * We have to use waitpid() to test for exit. Merely waiting for EOF on the
- * pty does not work, because the target process may have children still
- * attached to the terminal.
- */
-
-int PtyProcess::waitForChild()
-{
- int retval = 1;
-
- fd_set fds;
- FD_ZERO(&fds);
-
- while (1)
- {
- FD_SET(m_Fd, &fds);
- int ret = select(m_Fd+1, &fds, 0L, 0L, 0L);
- if (ret == -1)
- {
- if (errno != EINTR)
- {
- kdError(900) << k_lineinfo << "select(): " << perror << "\n";
- return -1;
- }
- ret = 0;
- }
-
- if (ret)
- {
- TQCString output = readAll(false);
- bool lineStart = true;
- while (!output.isNull())
- {
- if (!m_Exit.isEmpty())
- {
- // match exit string only at line starts
- int pos = output.find(m_Exit.data());
- if ((pos >= 0) && ((pos == 0 && lineStart) || (output.at (pos - 1) == '\n')))
- {
- kill(m_Pid, SIGTERM);
- }
- }
- if (m_bTerminal)
- {
- fputs(output, stdout);
- fflush(stdout);
- }
- lineStart = output.tqat( output.length() - 1 ) == '\n';
- output = readAll(false);
- }
- }
-
- ret = checkPidExited(m_Pid);
- if (ret == Error)
- {
- if (errno == ECHILD) retval = 0;
- else retval = 1;
- break;
- }
- else if (ret == Killed)
- {
- retval = 0;
- break;
- }
- else if (ret == NotExited)
- {
- // keep checking
- }
- else
- {
- retval = ret;
- break;
- }
- }
- return retval;
-}
-
-/*
- * SetupTTY: Creates a new session. The filedescriptor "fd" should be
- * connected to the tty. It is closed after the tty is reopened to make it
- * our controlling terminal. This way the tty is always opened at least once
- * so we'll never get EIO when reading from it.
- */
-
-int PtyProcess::SetupTTY(int fd)
-{
- // Reset signal handlers
- for (int sig = 1; sig < NSIG; sig++)
- signal(sig, SIG_DFL);
- signal(SIGHUP, SIG_IGN);
-
- // Close all file handles
- struct rlimit rlp;
- getrlimit(RLIMIT_NOFILE, &rlp);
- for (int i = 0; i < (int)rlp.rlim_cur; i++)
- if (i != fd) close(i);
-
- // Create a new session.
- setsid();
-
- // Open slave. This will make it our controlling terminal
- int slave = open(m_TTY, O_RDWR);
- if (slave < 0)
- {
- kdError(900) << k_lineinfo << "Could not open slave side: " << perror << "\n";
- return -1;
- }
- close(fd);
-
-#if defined(__SVR4) && defined(sun)
-
- // Solaris STREAMS environment.
- // Push these modules to make the stream look like a terminal.
- ioctl(slave, I_PUSH, "ptem");
- ioctl(slave, I_PUSH, "ldterm");
-
-#endif
-
-#ifdef TIOCSCTTY
- ioctl(slave, TIOCSCTTY, NULL);
-#endif
-
- // Connect stdin, stdout and stderr
- dup2(slave, 0); dup2(slave, 1); dup2(slave, 2);
- if (slave > 2)
- close(slave);
-
- // Disable OPOST processing. Otherwise, '\n' are (on Linux at least)
- // translated to '\r\n'.
- struct termios tio;
- if (tcgetattr(0, &tio) < 0)
- {
- kdError(900) << k_lineinfo << "tcgetattr(): " << perror << "\n";
- return -1;
- }
- tio.c_oflag &= ~OPOST;
- if (tcsetattr(0, TCSANOW, &tio) < 0)
- {
- kdError(900) << k_lineinfo << "tcsetattr(): " << perror << "\n";
- return -1;
- }
-
- return 0;
-}
-
-void PtyProcess::virtual_hook( int, void* )
-{ /*BASE::virtual_hook( id, data );*/ }
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-21 21:44:52 +0000