Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 442 insertions, 0 deletions

diff --git a/kdmlib/dmctl.cpp b/kdmlib/dmctl.cpp
new file mode 100644
index 000000000..4475ae1e7
--- /dev/null
+++ b/kdmlib/dmctl.cpp
@@ -0,0 +1,442 @@
+/*
+   Copyright (C) 2004 Oswald Buddenhagen <ossi@kde.org>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the Lesser GNU General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This program 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
+    General Public License for more details.
+
+   You should have received a copy of the Lesser GNU General Public License
+   along with this program; see the file COPYING.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#include "dmctl.h"
+
+#ifdef Q_WS_X11
+
+#include <klocale.h>
+#include <dcopclient.h>
+
+#include <qregexp.h>
+
+#include <X11/Xauth.h>
+#include <X11/Xlib.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+
+static enum { Dunno, NoDM, NewKDM, OldKDM, GDM } DMType = Dunno;
+static const char *ctl, *dpy;
+
+DM::DM() : fd( -1 )
+{
+	const char *ptr;
+	struct sockaddr_un sa;
+
+	if (DMType == Dunno) {
+		if (!(dpy = ::getenv( "DISPLAY" )))
+			DMType = NoDM;
+		else if ((ctl = ::getenv( "DM_CONTROL" )))
+			DMType = NewKDM;
+		else if ((ctl = ::getenv( "XDM_MANAGED" )) && ctl[0] == '/')
+			DMType = OldKDM;
+		else if (::getenv( "GDMSESSION" ))
+			DMType = GDM;
+		else
+			DMType = NoDM;
+	}
+	switch (DMType) {
+	default:
+		return;
+	case NewKDM:
+	case GDM:
+		if ((fd = ::socket( PF_UNIX, SOCK_STREAM, 0 )) < 0)
+			return;
+		sa.sun_family = AF_UNIX;
+		if (DMType == GDM) {
+			strcpy( sa.sun_path, "/var/run/gdm_socket" );
+			if (::connect( fd, (struct sockaddr *)&sa, sizeof(sa) )) {
+				strcpy( sa.sun_path, "/tmp/.gdm_socket" );
+				if (::connect( fd, (struct sockaddr *)&sa, sizeof(sa) )) {
+					::close( fd );
+					fd = -1;
+					break;
+				}
+			}
+			GDMAuthenticate();
+		} else {
+			if ((ptr = strchr( dpy, ':' )))
+				ptr = strchr( ptr, '.' );
+			snprintf( sa.sun_path, sizeof(sa.sun_path),
+			          "%s/dmctl-%.*s/socket",
+			          ctl, ptr ? int(ptr - dpy) : 512, dpy );
+			if (::connect( fd, (struct sockaddr *)&sa, sizeof(sa) )) {
+				::close( fd );
+				fd = -1;
+			}
+		}
+		break;
+	case OldKDM:
+		{
+			QString tf( ctl );
+			tf.truncate( tf.find( ',' ) );
+			fd = ::open( tf.latin1(), O_WRONLY );
+		}
+		break;
+	}
+}
+
+DM::~DM()
+{
+	if (fd >= 0)
+		close( fd );
+}
+
+bool
+DM::exec( const char *cmd )
+{
+	QCString buf;
+
+	return exec( cmd, buf );
+}
+
+/**
+ * Execute a KDM/GDM remote control command.
+ * @param cmd the command to execute. FIXME: undocumented yet.
+ * @param buf the result buffer.
+ * @return result:
+ *  @li If true, the command was successfully executed.
+ *   @p ret might contain addional results.
+ *  @li If false and @p ret is empty, a communication error occurred
+ *   (most probably KDM is not running).
+ *  @li If false and @p ret is non-empty, it contains the error message
+ *   from KDM.
+ */
+bool
+DM::exec( const char *cmd, QCString &buf )
+{
+	bool ret = false;
+	int tl;
+	unsigned len = 0;
+
+	if (fd < 0)
+		goto busted;
+
+	tl = strlen( cmd );
+	if (::write( fd, cmd, tl ) != tl) {
+	    bust:
+		::close( fd );
+		fd = -1;
+	    busted:
+		buf.resize( 0 );
+		return false;
+	}
+	if (DMType == OldKDM) {
+		buf.resize( 0 );
+		return true;
+	}
+	for (;;) {
+		if (buf.size() < 128)
+			buf.resize( 128 );
+		else if (buf.size() < len * 2)
+			buf.resize( len * 2 );
+		if ((tl = ::read( fd, buf.data() + len, buf.size() - len)) <= 0) {
+			if (tl < 0 && errno == EINTR)
+				continue;
+			goto bust;
+		}
+		len += tl;
+		if (buf[len - 1] == '\n') {
+			buf[len - 1] = 0;
+			if (len > 2 && (buf[0] == 'o' || buf[0] == 'O') &&
+			    (buf[1] == 'k' || buf[1] == 'K') && buf[2] <= 32)
+				ret = true;
+			break;
+		}
+	}
+	return ret;
+}
+
+bool
+DM::canShutdown()
+{
+	if (DMType == OldKDM)
+		return strstr( ctl, ",maysd" ) != 0;
+
+	QCString re;
+
+	if (DMType == GDM)
+		return exec( "QUERY_LOGOUT_ACTION\n", re ) && re.find("HALT") >= 0;
+
+	return exec( "caps\n", re ) && re.find( "\tshutdown" ) >= 0;
+}
+
+void
+DM::shutdown( KApplication::ShutdownType shutdownType,
+              KApplication::ShutdownMode shutdownMode, /* NOT Default */
+              const QString &bootOption )
+{
+	if (shutdownType == KApplication::ShutdownTypeNone)
+		return;
+
+	bool cap_ask;
+	if (DMType == NewKDM) {
+		QCString re;
+		cap_ask = exec( "caps\n", re ) && re.find( "\tshutdown ask" ) >= 0;
+	} else {
+		if (!bootOption.isEmpty())
+			return;
+		cap_ask = false;
+	}
+	if (!cap_ask && shutdownMode == KApplication::ShutdownModeInteractive)
+		shutdownMode = KApplication::ShutdownModeForceNow;
+
+	QCString cmd;
+	if (DMType == GDM) {
+		cmd.append( shutdownMode == KApplication::ShutdownModeForceNow ?
+		            "SET_LOGOUT_ACTION " : "SET_SAFE_LOGOUT_ACTION " );
+		cmd.append( shutdownType == KApplication::ShutdownTypeReboot ?
+		            "REBOOT\n" : "HALT\n" );
+	} else {
+		cmd.append( "shutdown\t" );
+		cmd.append( shutdownType == KApplication::ShutdownTypeReboot ?
+		            "reboot\t" : "halt\t" );
+		if (!bootOption.isEmpty())
+			cmd.append( "=" ).append( bootOption.local8Bit() ).append( "\t" );
+		cmd.append( shutdownMode == KApplication::ShutdownModeInteractive ?
+		            "ask\n" :
+		            shutdownMode == KApplication::ShutdownModeForceNow ?
+		            "forcenow\n" :
+		            shutdownMode == KApplication::ShutdownModeTryNow ?
+		            "trynow\n" : "schedule\n" );
+	}
+	exec( cmd.data() );
+}
+
+bool
+DM::bootOptions( QStringList &opts, int &defopt, int &current )
+{
+	if (DMType != NewKDM)
+		return false;
+
+	QCString re;
+	if (!exec( "listbootoptions\n", re ))
+		return false;
+
+	opts = QStringList::split( '\t', QString::fromLocal8Bit( re.data() ) );
+	if (opts.size() < 4)
+		return false;
+
+	bool ok;
+	defopt = opts[2].toInt( &ok );
+	if (!ok)
+		return false;
+	current = opts[3].toInt( &ok );
+	if (!ok)
+		return false;
+
+	opts = QStringList::split( ' ', opts[1] );
+	for (QStringList::Iterator it = opts.begin(); it != opts.end(); ++it)
+		(*it).replace( "\\s", " " );
+
+	return true;
+}
+
+void
+DM::setLock( bool on )
+{
+	if (DMType != GDM)
+		exec( on ? "lock\n" : "unlock\n" );
+}
+
+bool
+DM::isSwitchable()
+{
+	if (DMType == OldKDM)
+		return dpy[0] == ':';
+
+	if (DMType == GDM)
+		return exec( "QUERY_VT\n" );
+
+	QCString re;
+
+	return exec( "caps\n", re ) && re.find( "\tlocal" ) >= 0;
+}
+
+int
+DM::numReserve()
+{
+	if (DMType == GDM)
+		return 1; /* Bleh */
+
+	if (DMType == OldKDM)
+		return strstr( ctl, ",rsvd" ) ? 1 : -1;
+
+	QCString re;
+	int p;
+
+	if (!(exec( "caps\n", re ) && (p = re.find( "\treserve " )) >= 0))
+		return -1;
+	return atoi( re.data() + p + 9 );
+}
+
+void
+DM::startReserve()
+{
+	if (DMType == GDM)
+		exec("FLEXI_XSERVER\n");
+	else
+		exec("reserve\n");
+}
+
+bool
+DM::localSessions( SessList &list )
+{
+	if (DMType == OldKDM)
+		return false;
+
+	QCString re;
+
+	if (DMType == GDM) {
+		if (!exec( "CONSOLE_SERVERS\n", re ))
+			return false;
+		QStringList sess = QStringList::split( QChar(';'), re.data() + 3 );
+		for (QStringList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
+			QStringList ts = QStringList::split( QChar(','), *it, true );
+			SessEnt se;
+			se.display = ts[0];
+			se.user = ts[1];
+			se.vt = ts[2].toInt();
+			se.session = "<unknown>";
+			se.self = ts[0] == ::getenv( "DISPLAY" ); /* Bleh */
+			se.tty = false;
+			list.append( se );
+		}
+	} else {
+		if (!exec( "list\talllocal\n", re ))
+			return false;
+		QStringList sess = QStringList::split( QChar('\t'), re.data() + 3 );
+		for (QStringList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
+			QStringList ts = QStringList::split( QChar(','), *it, true );
+			SessEnt se;
+			se.display = ts[0];
+			if (ts[1][0] == '@')
+				se.from = ts[1].mid( 1 ), se.vt = 0;
+			else
+				se.vt = ts[1].mid( 2 ).toInt();
+			se.user = ts[2];
+			se.session = ts[3];
+			se.self = (ts[4].find( '*' ) >= 0);
+			se.tty = (ts[4].find( 't' ) >= 0);
+			list.append( se );
+		}
+	}
+	return true;
+}
+
+void
+DM::sess2Str2( const SessEnt &se, QString &user, QString &loc )
+{
+	if (se.tty) {
+		user = i18n("user: ...", "%1: TTY login").arg( se.user );
+		loc = se.vt ? QString("vt%1").arg( se.vt ) : se.display ;
+	} else {
+		user =
+			se.user.isEmpty() ?
+				se.session.isEmpty() ?
+					i18n("Unused") :
+					se.session == "<remote>" ?
+						i18n("X login on remote host") :
+						i18n("... host", "X login on %1").arg( se.session ) :
+				se.session == "<unknown>" ?
+					se.user :
+					i18n("user: session type", "%1: %2")
+						.arg( se.user ).arg( se.session );
+		loc =
+			se.vt ?
+				QString("%1, vt%2").arg( se.display ).arg( se.vt ) :
+				se.display;
+	}
+}
+
+QString
+DM::sess2Str( const SessEnt &se )
+{
+	QString user, loc;
+
+	sess2Str2( se, user, loc );
+	return i18n("session (location)", "%1 (%2)").arg( user ).arg( loc );
+}
+
+bool
+DM::switchVT( int vt )
+{
+	if (DMType == GDM)
+		return exec( QString("SET_VT %1\n").arg(vt).latin1() );
+
+	return exec( QString("activate\tvt%1\n").arg(vt).latin1() );
+}
+
+void
+DM::lockSwitchVT( int vt )
+{
+	if (switchVT( vt ))
+		kapp->dcopClient()->send( "kdesktop", "KScreensaverIface", "lock()", "" );
+}
+
+void
+DM::GDMAuthenticate()
+{
+	FILE *fp;
+	const char *dpy, *dnum, *dne;
+	int dnl;
+	Xauth *xau;
+
+	dpy = DisplayString( QPaintDevice::x11AppDisplay() );
+	if (!dpy) {
+		dpy = ::getenv( "DISPLAY" );
+		if (!dpy)
+			return;
+	}
+	dnum = strchr( dpy, ':' ) + 1;
+	dne = strchr( dpy, '.' );
+	dnl = dne ? dne - dnum : strlen( dnum );
+
+	/* XXX should do locking */
+	if (!(fp = fopen( XauFileName(), "r" )))
+		return;
+
+	while ((xau = XauReadAuth( fp ))) {
+		if (xau->family == FamilyLocal &&
+		    xau->number_length == dnl && !memcmp( xau->number, dnum, dnl ) &&
+		    xau->data_length == 16 &&
+		    xau->name_length == 18 && !memcmp( xau->name, "MIT-MAGIC-COOKIE-1", 18 ))
+		{
+			QString cmd( "AUTH_LOCAL " );
+			for (int i = 0; i < 16; i++)
+				cmd += QString::number( (uchar)xau->data[i], 16 ).rightJustify( 2, '0');
+			cmd += "\n";
+			if (exec( cmd.latin1() )) {
+				XauDisposeAuth( xau );
+				break;
+			}
+		}
+		XauDisposeAuth( xau );
+	}
+
+	fclose (fp);
+}
+
+#endif // Q_WS_X11