diff options
Diffstat (limited to 'kdm/kfrontend/kgreeter.cpp')
| -rw-r--r-- | kdm/kfrontend/kgreeter.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/kdm/kfrontend/kgreeter.cpp b/kdm/kfrontend/kgreeter.cpp index fd4f07d96..0a476d2b9 100644 --- a/kdm/kfrontend/kgreeter.cpp +++ b/kdm/kfrontend/kgreeter.cpp @@ -71,8 +71,25 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. #include <utmp.h> #include <utmpx.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <limits.h> +#include <dirent.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/select.h> +#include <sys/time.h> +#include <termios.h> +#include <signal.h> + #include <X11/Xlib.h> +#define FIFO_DIR "/tmp/ksocket-global/kdm" +#define FIFO_FILE "/tmp/ksocket-global/kdm/kdmctl-%1" +#define FIFO_SAK_FILE "/tmp/ksocket-global/kdm/kdmctl-sak-%1" + class UserListView : public KListView { public: UserListView( bool _them, TQWidget *parent = 0, const char *name = 0 ) @@ -161,6 +178,8 @@ KGreeter::KGreeter( bool framed ) , prevValid( true ) , needLoad( false ) , themed( framed ) + , mPipe_fd( -1 ) + , closingDown( false ) { stsFile = new KSimpleConfig( _stsFile ); stsFile->setGroup( "PrevUser" ); @@ -185,16 +204,95 @@ KGreeter::KGreeter( bool framed ) curPlugin = 0; pluginList = KGVerify::init( _pluginsLogin ); } + + TQTimer::singleShot( 0, this, TQT_SLOT(handleInputPipe()) ); } KGreeter::~KGreeter() { + if (mPipe_fd != -1) { + closingDown = true; + ::close(mPipe_fd); + ::unlink(mPipeFilename.ascii()); + } hide(); delete userList; delete verify; delete stsFile; } +void KGreeter::handleInputPipe(void) { + if (closingDown) { + ::unlink(mPipeFilename.ascii()); + return; + } + + if (isShown() == false) { + TQTimer::singleShot( 100, this, TQT_SLOT(handleInputPipe()) ); + return; + } + + char readbuf[2048]; + int displayNumber; + TQString currentDisplay; + currentDisplay = TQString(getenv("DISPLAY")); + currentDisplay = currentDisplay.replace(":", ""); + displayNumber = currentDisplay.toInt(); + mPipeFilename = TQString(FIFO_FILE).tqarg(displayNumber); + ::unlink((TQString(FIFO_SAK_FILE).tqarg(displayNumber)).ascii()); + + /* Create the FIFOs if they do not exist */ + umask(0); + struct stat buffer; + int status; + status = stat(FIFO_DIR, &buffer); + if (status == 0) { + int file_mode = ((buffer.st_mode & S_IRWXU) >> 6) * 100; + file_mode = file_mode + ((buffer.st_mode & S_IRWXG) >> 3) * 10; + file_mode = file_mode + ((buffer.st_mode & S_IRWXO) >> 0) * 1; + if ((file_mode != 600) || (buffer.st_uid != 0) || (buffer.st_gid != 0)) { + ::unlink(mPipeFilename.ascii()); + printf("[WARNING] Possible security breach! Please check permissions on " FIFO_DIR " (must be 600 and owned by root/root, got %d %d/%d). Not listening for login credentials on remote control socket.\n", file_mode, buffer.st_uid, buffer.st_gid); fflush(stdout); + return; + } + } + mkdir(FIFO_DIR,0600); + mknod(mPipeFilename.ascii(), S_IFIFO|0600, 0); + chmod(mPipeFilename.ascii(), 0600); + + mPipe_fd = ::open(mPipeFilename.ascii(), O_RDONLY | O_NONBLOCK); + int numread; + TQString inputcommand = ""; + while ((!inputcommand.contains('\n')) && (!closingDown)) { + numread = ::read(mPipe_fd, readbuf, 2048); + readbuf[numread] = 0; + readbuf[2047] = 0; + inputcommand += readbuf; + tqApp->processEvents(); + } + if (closingDown) { + ::unlink(mPipeFilename.ascii()); + return; + } + inputcommand = inputcommand.replace('\n', ""); + TQStringList commandList = TQStringList::split('\t', inputcommand, false); + if ((*(commandList.at(0))) == "LOGIN") { + if (verify) { + verify->setUser( (*(commandList.at(1))) ); + verify->setPassword( (*(commandList.at(2))) ); + accept(); + } + } + if (!closingDown) { + TQTimer::singleShot( 0, this, TQT_SLOT(handleInputPipe()) ); + ::close(mPipe_fd); + ::unlink(mPipeFilename.ascii()); + } + else { + ::unlink(mPipeFilename.ascii()); + } +} + void KGreeter::readFacesList() { FILE *f = fopen( TQFile::encodeName( _faceDir + "/.randomlist" ), "rt" ); @@ -742,6 +840,7 @@ KGreeter::verifyOk() GSendStr( "default" ); } GSendInt( G_Ready ); + closingDown = true; done( ex_exit ); } @@ -1165,6 +1264,7 @@ KThemedGreeter::slotAskAdminPassword() if (k.exec()) { GSendInt(G_Ready); hide(); + closingDown = true; done(ex_exit); } } |