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tdebase/kdmlib/dmctl.cpp

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/*
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 <tqregexp.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 )
{
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 = (char*)strchr( dpy, ':' )))
ptr = (char*)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:
{
TQString 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 )
{
TQCString 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, TQCString &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;
TQCString 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 TQString &bootOption )
{
if (shutdownType == KApplication::ShutdownTypeNone)
return;
bool cap_ask;
if (DMType == NewKDM) {
TQCString 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;
TQCString 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( TQStringList &opts, int &defopt, int &current )
{
if (DMType != NewKDM)
return false;
TQCString re;
if (!exec( "listbootoptions\n", re ))
return false;
opts = TQStringList::split( '\t', TQString::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 = TQStringList::split( ' ', opts[1] );
for (TQStringList::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" );
TQCString 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;
TQCString 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;
TQCString re;
if (DMType == GDM) {
if (!exec( "CONSOLE_SERVERS\n", re ))
return false;
TQStringList sess = TQStringList::split( TQChar(';'), re.data() + 3 );
for (TQStringList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
TQStringList ts = TQStringList::split( TQChar(','), *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;
TQStringList sess = TQStringList::split( TQChar('\t'), re.data() + 3 );
for (TQStringList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
TQStringList ts = TQStringList::split( TQChar(','), *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, TQString &user, TQString &loc )
{
if (se.tty) {
user = i18n("user: ...", "%1: TTY login").arg( se.user );
loc = se.vt ? TQString("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 ?
TQString("%1, vt%2").arg( se.display ).arg( se.vt ) :
se.display;
}
}
QString
DM::sess2Str( const SessEnt &se )
{
TQString 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( TQString("SET_VT %1\n").arg(vt).latin1() );
return exec( TQString("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( TQPaintDevice::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 ))
{
TQString cmd( "AUTH_LOCAL " );
for (int i = 0; i < 16; i++)
cmd += TQString::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