Diffstat (limited to 'core/opie-login/qdmdialogimpl.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | core/opie-login/qdmdialogimpl.cpp | 535 |
1 files changed, 535 insertions, 0 deletions
diff --git a/core/opie-login/qdmdialogimpl.cpp b/core/opie-login/qdmdialogimpl.cpp new file mode 100644 index 0000000..bb1b453 --- a/dev/null +++ b/core/opie-login/qdmdialogimpl.cpp @@ -0,0 +1,535 @@ +/********************************************************************** +** Copyright (C) 2001 LISA Systems +** +** This file is an additional part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** For further information contact info@lisa.de +** +**********************************************************************/ + +/* + * AUTHOR: Christian Rahn + * EMAIL: cdr@lisa.de + * + * $Id$ + */ + +#include "qdm_config.h" + +#ifdef QT_QWS_LOGIN + +#include <pwd.h> +#include <unistd.h> +#include <stdlib.h> +#include <iostream.h> +#include <assert.h> + +#include <qlabel.h> +#include <qregexp.h> +#include <qdatetime.h> +#include <qmessagebox.h> +#include <qcombobox.h> +#include <qlineedit.h> +#include <qtranslator.h> +#include <qpeapplication.h> + +#include <qwsdisplay_qws.h> + +#include <string.h> +#include <stdio.h> +#include <errno.h> +#include <unistd.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/sem.h> +#include <sys/shm.h> +#include <sys/ipc.h> + +#include <global.h> + +#if defined(QT_QWS_LOGIN_USEPAM) +extern "C" { +#include <security/pam_appl.h> +} +#else +#define _XOPEN_SOURCE +#include <unistd.h> +#include <crypt.h> +#endif + + +#include "qdmdialogimpl.h" +#include "../taskbar/inputmethods.h" + + +//---------------------------------------------------------------------------- + +//-- taken from semctl man page +#if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED) +//-- union semun is defined by including <sys/sem.h> +#else +//-- according to X/OPEN we have to define it ourselves +union semun { + int val; // value for SETVAL + struct semid_ds *buf; // buffer for IPC_STAT, IPC_SET + unsigned short int *array; // array for GETALL, SETALL + struct seminfo *__buf; // buffer for IPC_INFO +}; +#endif + +//---------------------------------------------------------------------------- + +static const int ShowClockFreq = 1; + +QDM_SHOWNUSERS; + +#ifdef QT_QWS_LOGIN_USEPAM + +static const char *_PAM_SERVICE = "xdm"; +static const char *PAM_password; + +typedef const struct pam_message pam_message_type; + +static int PAM_conv( int, pam_message_type **, struct pam_response **, void * ); + +static struct pam_conv PAM_conversation = { + &PAM_conv, + NULL +}; + +//---------------------------------------------------------------------------- + +static char *COPY_STRING( const char * s ) { + return (s) ? strdup(s) : (char *)NULL; +} + +#define GET_MEM if (reply) realloc(reply, size);\ + else reply = (struct pam_response *)malloc(size); \ + if (!reply) return PAM_CONV_ERR; \ + size += sizeof(struct pam_response) + + +static int PAM_conv( int num_msg, pam_message_type **msg, + struct pam_response **resp, void *) +{ + int count = 0, replies = 0; + struct pam_response *reply = NULL; + int size = sizeof(struct pam_response); + + for( count = 0; count < num_msg; count++ ) { + switch (msg[count]->msg_style) { + case PAM_PROMPT_ECHO_ON: + /* user name given to PAM already */ + return PAM_CONV_ERR; + + case PAM_PROMPT_ECHO_OFF: + /* wants password */ + GET_MEM; + reply[replies].resp_retcode = PAM_SUCCESS; + reply[replies].resp = COPY_STRING(PAM_password); + replies++; + /* PAM frees resp */ + break; + case PAM_TEXT_INFO: + break; + default: + /* unknown or PAM_ERROR_MSG */ + if (reply) free (reply); + return PAM_CONV_ERR; + } + } + if (reply) *resp = reply; + return PAM_SUCCESS; +} + +#endif + + +//---------------------------------------------------------------------------- + +QDMDialogImpl::QDMDialogImpl( QWidget* parent, const char* name, bool modal, WFlags f ) + : QDMDialog( parent, name, modal, f ) +{ + showTime(); + clockTimer = startTimer( ShowClockFreq * 1000 ); //-- call timer evry min. + setActiveWindow(); + setFocus(); + + input = new InputMethods( this ); + input->resize( input->sizeHint() ); + input->move( 0, height() - input->height() ); + + for( int i=0; Shown_Users[i]; ++i ) { + input_user->insertItem( Shown_Users[i] ); + } + input_user->clearEdit(); + + label_welcome->setText( QDM_WELCOME_STRING ); + +}; + + + +QDMDialogImpl::~QDMDialogImpl() +{ + input->lower(); + input->close( false ); + input->hide(); + delete input; + input = 0; + if( parent() ) { + ((QWidget*)parent())->repaint(true); + } +}; + + +void QDMDialogImpl::accept () { }; +void QDMDialogImpl::reject () { }; + + +void QDMDialogImpl::showTime( void ) +{ + label_date->setText( QDate::currentDate().toString() ); + label_time->setText( QTime::currentTime().toString() ); +} + + +void QDMDialogImpl::timerEvent( QTimerEvent * e ) +{ + if( e->timerId() == clockTimer ) + showTime(); +} + + +//---------------------------------------------------------------------------- + +void QDMDialogImpl::slot_sleepmode() +{ + const int button = QMessageBox::warning( this, "Shutdown", tr( "Do you really want to go\nto sleep mode now?" ), + QString::null, tr( "Cancel" ), QString::null,0,1 ); + switch( button ) { + case 0: + done( Rejected ); + // Global::execute( cmd_shutdown ); + if( vfork() == 0 ) { + execl( QDM_CMD_SLEEP, 0 ); + cerr << "Sleepmode: " << strerror( errno ) << endl; + } + break; + + default: + break; + } +} + + +//---------------------------------------------------------------------------- + +void QDMDialogImpl::slot_shutdown() +{ + const int button = QMessageBox::warning( this, "Shutdown", tr("Do you really want to shut\nthe system down now?"), + QString::null, tr("Cancel"), QString::null,0,1 ); + switch( button ) { + case 0: + done( Rejected ); + // Global::execute( cmd_shutdown ); + if( vfork() == 0 ) { + execl( QDM_CMD_SHUTDOWN, 0 ); + cerr << "Shutdown: " << strerror( errno ) << endl; + } + break; + + default: + break; + } +} + + + + +//---------------------------------------------------------------------------- + +void QDMDialogImpl::informBadPassword() +{ + QMessageBox::warning( this, tr("Password wrong"), + tr("The given password is incorrect") ); +} + + +//---------------------------------------------------------------------------- + +#if defined(QT_QWS_LOGIN_USEPAM) + +static bool pwcheck_PAM( const char *user, const char *password ) +{ + bool pw_correct = false; + int pam_error; + int pam_return = 0; + pam_handle_t *pamh = 0; + PAM_password = password.latin1(); + + pam_error = pam_start( _PAM_SERVICE, user, &PAM_conversation, &pamh ); + if( pam_error == PAM_SUCCESS ) { + pam_error = pam_authenticate( pamh, 0 ); + if( pam_error == PAM_SUCCESS ) { + //-- password correct + pw_correct = true; + pam_return = PAM_SUCCESS; + } else { + pam_return = pam_error; + } + } else { + // cerr << "PAM error: " << pam_strerror( pamh, pam_error ) << endl; + } + pam_end( pamh, pam_return ); + return pw_correct; +} + +#else + +//---------------------------------------------------------------------------- + +static bool pwcheck_Unix( const char *user, const char *password ) +{ + struct passwd * pword = getpwnam( user ); + if( pword ) { + if( strcmp( crypt(password, password), pword->pw_passwd) == 0 ) { + return true; + } + } + return false; +} + +#endif + + + +//---------------------------------------------------------------------------- + +void QDMDialogImpl::slot_login() +{ + bool pw_correct = false; + const char *username = input_user->currentText().latin1(); + const char *password = input_password->text().latin1(); + + assert( username ); + +#if defined(QT_QWS_LOGIN_USEPAM) + pw_correct = pwcheck_PAM( username, password ); +#else + pw_correct = pwcheck_Unix( username, password ); +#endif + + if( pw_correct ) { + if( changePersona( username ) ) { + // cerr << "Password correct" << endl; + done( Accepted ); + return; + } + } else { + // cerr << "Password incorrect" << endl; + } + informBadPassword(); +} + + +//---------------------------------------------------------------------------- + +bool QDMDialogImpl::changePersona( const char *username ) +{ + int err; + + //-- get some info on user <username> + struct passwd * pword; + pword = getpwnam( username ); + + if( pword == 0 ) + return false; + + gid_t gid = pword->pw_gid; + uid_t uid = pword->pw_uid; + + //-- some very dirty hacks following + // extern int qws_display_id; + extern QString qws_qtePipeFilename(); + extern QString qws_dataDir(); + + + const QString QTEdataDir = qws_dataDir(); + QString QTEdataDirNew = QTEdataDir; + QTEdataDirNew.replace( QRegExp("root"), username ); + + const char *qws_display_str = getenv("QWS_DISPLAY"); + + //-- get name of semaphore and lock + QString pipe = qws_qtePipeFilename(); + + //-- change owner of semaphore + key_t semkey = ftok( pipe.latin1(), 'd' ); + int semid = semget( semkey, 0, 0 ); + if( semid < 0 ) + cerr << "error: semget, " << strerror( errno ) << endl; + + struct shmid_ds shminfo; + semun arg; + semid_ds semidds; + arg.buf = & semidds; + + if( semctl( semid, 0, IPC_STAT, arg ) < 0 ) + cerr << "error: semctl stat, " << strerror( errno ) << endl; + + arg.buf->sem_perm.uid = uid; + arg.buf->sem_perm.gid = gid; + + if( semctl( semid, 0, IPC_SET, arg ) < 0 ) + cerr << "error: semctl set, " << strerror( errno ) << endl; + + //-- change owner of shared memory + key_t memkey = ftok( pipe.latin1(), 'm' ); + int ramid = shmget( memkey, 0, 0 ); + if( ramid < 0 ) cerr << "error: shmget, " << strerror( errno ) << endl; + + if( shmctl( ramid, IPC_STAT, &shminfo ) < 0 ) + cerr << "error: shmctl stat, " << strerror( errno ) << endl; + + shminfo.shm_perm.uid = uid; + shminfo.shm_perm.gid = gid; + + if( shmctl( ramid, IPC_SET, &shminfo ) < 0 ) + cerr << "error: shmctl set, " << strerror( errno ) << endl; + + //-- change owner of region manager + memkey = ftok( pipe.latin1(), 'r' ); + int regionid = shmget( memkey, 0, 0 ); + if( regionid < 0 ) + cerr << "error: shmget, " << strerror( errno ) << endl; + + if( shmctl( regionid, IPC_STAT, &shminfo ) < 0 ) + cerr << "error: shmctl stat, " << strerror( errno ) << endl; + + shminfo.shm_perm.uid = uid; + shminfo.shm_perm.gid = gid; + + if( shmctl( regionid, IPC_SET, &shminfo ) < 0 ) + cerr << "error: shmctl set, " << strerror( errno ) << endl; + + // cerr << "ungrabbing qws display: " << qws_display_id << " on lock " << pipe << endl; + // QWSDisplay::ungrab(); + + //-- presenting socket-file to new user + chown( pipe.latin1(), uid, gid ); + chown( QTEdataDir.latin1(), uid, gid ); + + + //-- another dirty hack - force framebuffer to be writeable... + struct stat devstat; + if( ! stat( "/dev/fb0", &devstat ) ) { + if( chmod( "/dev/fb0", devstat.st_mode |S_IWOTH |S_IWUSR |S_IWGRP ) ) { + cerr << "chmod error: " << strerror( errno ) << endl; + } + } + + err = rename( QTEdataDir, QTEdataDirNew ) ; + if( err < 0 ) cerr << "error: rename " << strerror(errno) + << " , " << QTEdataDir << " -> " << QTEdataDirNew << endl; + + // + //-- actually change uid and gid + // + // cerr << "changing persona, uid: " << uid << " gid: " << gid << endl; + + err = setgid( gid ); + if( err != 0 ) cerr << "error: gid changePersona " << err << endl; + + err = setuid( uid ); + if( err != 0 ) cerr << "error: uid changePersona " << err << endl; + + + //-- set some environment + setenv( "QWS_DISPLAY", qws_display_str, true ); + setenv( "LOGNAME", username, true ); + setenv( "USER", username, true ); + setenv( "HOME", pword->pw_dir, true ); + + // cout << "QTE data dir: " << qws_dataDir() << endl; + + //-- I am reborn + + return true; +} + + + +//---------------------------------------------------------------------------- + +bool QDMDialogImpl::login( QWidget *parent ) +{ + //-- only when called as 'root' do login-box + if( getuid() != 0 ) + return true; + + + //-- are we coming from a 'restart' ? + if( getenv("QDM_STARTED") ) + return true; + else + unsetenv("QDM_STARTED"); + + +#ifndef QT_NO_TRANSLATION + QString lang = getenv( "LANG" ); + + QTranslator * trans = new QTranslator(qApp); + QString tfn = QPEApplication::qpeDir()+"/i18n/"+lang+"/login.qm"; + if ( trans->load( tfn )) + qApp->installTranslator( trans ); + else { + delete trans; + trans = 0; + } +#endif + + if( parent ) parent->erase(); + + QDMDialog *dialog = new QDMDialogImpl( parent, "Login", true //); + ,WStyle_NoBorder | WStyle_Customize ); + +#if QT_VERSION >= 300 + Q_CHECK_PTR( dialog ); +#else + CHECK_PTR( dialog ); +#endif + int result = dialog->exec(); + delete dialog; + + if( parent ) parent->erase(); + +#ifndef QT_NO_TRANSLATION + if( trans ) { + qApp->removeTranslator( trans ); + delete trans; + trans = 0; + } +#endif + + setenv( "QDM_STARTED", "", true ); + + // if( parent ) parent->erase(); + + //-- get all configs going + Global::restart(); + + return result; +} + + +#endif //-- QT_QWS_LOGIN |