- last login name is saved

- wait image should be displayed right now
- the qApp object is destroyed before the launcher is started -- this
  should prevent some semaphore permission problems
- added a (very basic) crash handler
- added a simple "respawned too fast" detection in case of qt/e fb problems
- if opie-login is started with -a <user> or --autologin <user> it doesn't
  prompt for a username/password - instead it loads qpe directly using the
  specified user account
  So even if you are not running multiuser, you should now start qpe with:
  opie-login --autologin=root

1 files changed, 112 insertions, 14 deletions

diff --git a/core/opie-login/main.cpp b/core/opie-login/main.cpp
index df9451d..91610af 100644
--- a/core/opie-login/main.cpp
+++ b/core/opie-login/main.cpp
@@ -1,11 +1,16 @@
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+#include <time.h>
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <unistd.h>
 #include <syslog.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>
+#include <getopt.h>
+#include <string.h>
 
 #include <qpe/qpeapplication.h>
@@ -17,6 +22,9 @@
 
 #include <qwindowsystem_qws.h>
-#include <qfile.h>
+#include <qmessagebox.h>
+#include <qlabel.h>
+#include <qtimer.h>
 
+#include "loginapplication.h"
 #include "loginwindowimpl.h"
 #include "calibrate.h"
@@ -25,7 +33,11 @@ using namespace Opie;
 
 int login_main ( int argc, char **argv );
-void sigusr1 ( int sig );
+void sigterm ( int sig );
 void exit_closelog ( );
 
+static struct option long_options [] = {
+        { "autologin", 1, 0, 'a' },
+        { 0, 0, 0, 0 }
+};
 
 
@@ -36,4 +48,19 @@ int main ( int argc, char **argv )
                 return 1;
         }
+        if ( ::getuid ( ) != 0 ) // qt doesn't really like SUID and
+                ::setuid ( 0 );      // messes up things like config files
+
+        char *autolog = 0;
+        int c;
+        while (( c = ::getopt_long ( argc, argv, "a:", long_options, 0 )) != -1 ) {
+                switch ( c ) {
+                        case 'a':
+                                autolog = optarg;
+                                break;
+                        default:
+                                ::fprintf ( stderr, "Usage: %s [-a|--autologin=<user>]\n", argv [0] );
+                                return 2;
+                }
+        }
 
         //struct rlimit rl;
@@ -46,5 +73,5 @@ int main ( int argc, char **argv )
         ::setsid ( );
 
-        ::signal ( SIGUSR1, sigusr1 );
+        ::signal ( SIGTERM, sigterm );
 
         ::openlog ( "opie-login", LOG_CONS, LOG_AUTHPRIV );
@@ -55,15 +82,69 @@ int main ( int argc, char **argv )
 
                 if ( child < 0 ) {
-                        ::syslog ( LOG_ERR, "Could not fork process" );
+                        ::syslog ( LOG_ERR, "Could not fork GUI process\n" );
                         break;
-
                 }
                 else if ( child > 0 ) {
                         int status = 0;
+                        time_t started = ::time ( 0 );
 
                         while ( ::waitpid ( child, &status, 0 ) < 0 ) { }
+
+                        if (( ::time ( 0 ) - started ) < 3 ) {
+                                if ( autolog ) {
+                                        ::syslog ( LOG_ERR, "Respawning too fast -- disabling auto-login\n" );
+                                        autolog = 0;
+                                }
+                                else {
+                                        ::syslog ( LOG_ERR, "Respawning too fast -- going down\n" );
+                                        break;
+                                }
+                        }
+                        int killedbysig = 0;
+
+                        if ( WIFSIGNALED( status )) {
+                                switch ( WTERMSIG( status )) {
+                                        case SIGINT :
+                                        case SIGTERM:
+                                        case SIGKILL:
+                                                break;
+
+                                        default     :
+                                                killedbysig = WTERMSIG( status );
+                                                break;
+                                }
+                        }
+                        if ( killedbysig ) {  // qpe was killed by an uncaught signal
+                                qApp = 0;
+
+                                QWSServer::setDesktopBackground ( QImage ( ));
+                                QApplication *app = new QApplication ( argc, argv, QApplication::GuiServer );
+                                app-> setFont ( QFont ( "Helvetica", 10 ));
+                                app-> setStyle ( new QPEStyle ( ));
+
+                                const char *sig = ::strsignal ( killedbysig );
+                                QLabel *l = new QLabel ( 0, "sig", Qt::WStyle_Customize | Qt::WStyle_NoBorder | Qt::WStyle_Tool );
+                                l-> setText ( LoginWindowImpl::tr( "OPIE was terminated\nby an uncaught signal\n(%1)\n" ). arg ( sig ));
+                                l-> setAlignment ( Qt::AlignCenter );
+                                l-> move ( 0, 0 );
+                                l-> resize ( app-> desktop ( )-> width ( ), app-> desktop ( )-> height ( ));
+                                l-> show ( );
+                                QTimer::singleShot ( 3000, app, SLOT( quit ( )));
+                                app-> exec ( );
+                                delete app;
+                                qApp = 0;
+                        }
                 }
                 else {
-                        ::exit ( login_main ( argc, argv ));
+                        if ( autolog ) {
+                                LoginApplication::setLoginAs ( autolog );
+
+                                if ( LoginApplication::changeIdentity ( ))
+                                        ::exit ( LoginApplication::login ( ));
+                                else
+                                        ::exit ( 0 );
+                        }
+                        else
+                                ::exit ( login_main ( argc, argv ));
                 }
         }
@@ -71,9 +152,10 @@ int main ( int argc, char **argv )
 }
 
-void sigusr1 ( int /*sig*/ )
+void sigterm ( int /*sig*/ )
 {
         ::exit ( 0 );
 }
 
+
 void exit_closelog ( )
 {
@@ -182,11 +264,12 @@ private:
 
 
+
 int login_main ( int argc, char **argv )
 {
         QWSServer::setDesktopBackground( QImage() );
-        QPEApplication app ( argc, argv, QApplication::GuiServer );
+        LoginApplication *app = new LoginApplication ( argc, argv );
 
-        app. setFont ( QFont ( "Helvetica", 10 ));
-        app. setStyle ( new QPEStyle ( ));
+        app-> setFont ( QFont ( "Helvetica", 10 ));
+        app-> setStyle ( new QPEStyle ( ));
 
         ODevice::inst ( )-> setSoftSuspend ( true );
@@ -209,12 +292,27 @@ int login_main ( int argc, char **argv )
 
         LoginWindowImpl *lw = new LoginWindowImpl ( );
-        app. setMainWidget ( lw );
-        lw-> setGeometry ( 0, 0, app. desktop ( )-> width ( ), app. desktop ( )-> height ( ));
+        app-> setMainWidget ( lw );
+        lw-> setGeometry ( 0, 0, app-> desktop ( )-> width ( ), app-> desktop ( )-> height ( ));
         lw-> show ( );
 
-        int rc = app. exec ( );
+        int rc = app-> exec ( );
 
         ODevice::inst ( )-> setSoftSuspend ( false );
 
+        if ( app-> loginAs ( )) {
+                if ( app-> changeIdentity ( )) {
+                        app-> login ( );
+
+                        // if login succeeds, it never comes back
+
+                        QMessageBox::critical ( 0, LoginWindowImpl::tr( "Failure" ), LoginWindowImpl::tr( "Could not start OPIE." ));
+                        rc = 1;
+                }
+                else {
+                        QMessageBox::critical ( 0, LoginWindowImpl::tr( "Failure" ), LoginWindowImpl::tr( "Could not switch to new user identity" ));
+                        rc = 2;
+                }
+
+        }
         return rc;
 }