Opie login becomes useable now:

 - pre- and post-session scripts (in $OPIEDIR/share/opie-login) to fix
   things like device ownership to user/root
 - logging in now doesn't simply mean: execute bin/qpe. instead opie-login
    * first tries to execute ~/.opie-session
    * if that doesn't exist $OPIEDIR/share/opie-login/opie-session
    * if that fails too, execute $OPIEDIR/bin/qpe
   you can now handle things like ssh-agent on a per-user basis.
(I'll commit the scripts later - for now it simply works like before)

3 files changed, 81 insertions, 9 deletions

diff --git a/core/opie-login/loginapplication.cpp b/core/opie-login/loginapplication.cpp
index 8d86a71..1facf2d 100644
--- a/core/opie-login/loginapplication.cpp
+++ b/core/opie-login/loginapplication.cpp
@@ -31,4 +31,6 @@
 #include <stdlib.h>
 #include <signal.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
 
 #ifdef USEPAM
@@ -159,4 +161,8 @@ bool LoginApplication::changeIdentity ( )
 		return false;
 
+	// we are still root at this point - try to run the pre-session script
+	if ( !runRootScript ( "OPIEDIR", "share/opie-login/pre-session", s_username ))
+		qWarning ( "failed to run $OPIEDIR/share/opie-login/pre-session" );
+
 	bool fail = false;
 	fail |= ( ::initgroups ( pw-> pw_name, pw-> pw_gid ));
@@ -178,14 +184,68 @@ bool LoginApplication::changeIdentity ( )
 bool LoginApplication::login ( )
 {
-	char *opie = ::getenv ( "OPIEDIR" );
-	char *arg = new char [::strlen ( opie ) + 8 + 1];
+	execUserScript ( "HOME", ".opie-session" );
+	execUserScript ( "OPIEDIR", "share/opie-login/opie-session" );
+	execUserScript ( "OPIEDIR", "bin/qpe" );
 
-	::strcpy ( arg, opie );
-	::strcat ( arg, "/bin/qpe" );
+	qWarning ( "failed to start an Opie session" );
+	return false;
+}
 
-	// start qpe via a login shell
-	::execl ( "/bin/sh", "-sh", "-c", arg, 0 );
+void LoginApplication::logout ( )
+{
+	// we are now root again - try to run the post-session script
+	if ( !runRootScript ( "OPIEDIR", "share/opie-login/post-session" ))
+		qWarning ( "failed to run $OPIEDIR/scripts/post-session" );	
+}
 
-	return false;
+
+static char *buildarg ( const char *base, const char *script )
+{
+	const char *dir = base ? ::getenv ( base ) : "/";
+	char *arg = new char [::strlen ( dir ) + ::strlen ( script ) + 2];
+
+	::strcpy ( arg, dir );
+	::strcat ( arg, "/" );
+	::strcat ( arg, script );
+
+	return arg;
+}
+
+bool LoginApplication::runRootScript ( const char *base, const char *script, const char *param )
+{
+	bool res = false;
+	char *arg = buildarg ( base, script );
+
+	struct stat st;
+	if (( ::stat ( arg, &st ) == 0 ) && ( st. st_uid == 0 )) {
+		pid_t child = ::fork ( );	
+		
+		if ( child == 0 ) {
+			::execl ( "/bin/sh", "-sh", arg, param, 0 );
+			::_exit ( -1 );
+		}
+		else if ( child > 0 ) {
+			int status = 0;
+		
+			while ( ::waitpid ( child, &status, 0 ) < 0 ) { }
+			res = ( WIFEXITED( status )) && ( WEXITSTATUS( status ) == 0 );
+		}
+	}
+		
+	delete [] arg;
+	return res;
+}
+
+void LoginApplication::execUserScript ( const char *base, const char *script )
+{
+	char *arg = buildarg ( base, script );
+
+	struct stat st;
+	if ( ::stat ( arg, &st ) == 0 ) {
+		if ( st. st_mode & S_IXUSR )
+			::execl ( "/bin/sh", "-sh", "-c", arg, 0 );
+		else
+			::execl ( "/bin/sh", "-sh", arg, 0 );
+	}
 }
 
diff --git a/core/opie-login/loginapplication.h b/core/opie-login/loginapplication.h
index 4e7cf79..d8264ea 100644
--- a/core/opie-login/loginapplication.h
+++ b/core/opie-login/loginapplication.h
@@ -29,6 +29,6 @@
 #define __OPIE_LOGINAPPLICATION_H__
 
+#include <sys/types.h>
 #include <qstringlist.h>
-
 #include <qpe/qpeapplication.h>
 
@@ -49,4 +49,5 @@ public:
 	static bool changeIdentity ( );
 	static bool login ( );
+	static void logout ( );
 
 	static QStringList allUsers ( );
@@ -54,4 +55,7 @@ public:
 	void quitToConsole ( );
 
+	static bool runRootScript ( const char *base, const char *script, const char *param = 0 );
+	static void execUserScript ( const char *base, const char *script );
+
 private:
 	static const char *s_username;
diff --git a/core/opie-login/main.cpp b/core/opie-login/main.cpp
index 674829d..81f4d1e 100644
--- a/core/opie-login/main.cpp
+++ b/core/opie-login/main.cpp
@@ -63,4 +63,5 @@ using namespace Opie;
 int login_main ( int argc, char **argv, pid_t ppid );
 void sigterm ( int sig );
+void sigint ( int sig );
 void exit_closelog ( );
 
@@ -75,5 +76,4 @@ int main ( int argc, char **argv )
 	pid_t ppid = ::getpid ( );
 
-
 	if ( ::geteuid ( ) != 0 ) {
 		::fprintf ( stderr, "%s can only be executed by root. (or chmod +s)", argv [0] );
@@ -106,4 +106,5 @@ int main ( int argc, char **argv )
 
 	::signal ( SIGTERM, sigterm );
+	::signal ( SIGINT, sigterm );
 
 	::openlog ( "opie-login", LOG_CONS, LOG_AUTHPRIV );
@@ -123,4 +124,6 @@ int main ( int argc, char **argv )
 			while ( ::waitpid ( child, &status, 0 ) < 0 ) { }
 
+			LoginApplication::logout ( );
+
 			if (( ::time ( 0 ) - started ) < 3 ) {
 				if ( autolog ) {
@@ -150,4 +153,6 @@ int main ( int argc, char **argv )
 				qApp = 0;
 
+				::syslog ( LOG_ERR, "Opie was killed by a signal #%d", killedbysig );
+
 				QWSServer::setDesktopBackground ( QImage ( ));
 				QApplication *app = new QApplication ( argc, argv, QApplication::GuiServer );
@@ -304,4 +309,5 @@ private:
 
 
+namespace Opie { extern int force_appearance; }  // HACK to get around the force-style setting
 
 
@@ -311,4 +317,6 @@ int login_main ( int argc, char **argv, pid_t ppid )
 	LoginApplication *app = new LoginApplication ( argc, argv, ppid );
 
+	Opie::force_appearance = 0;
+
 	app-> setFont ( QFont ( "Helvetica", 10 ));
 	app-> setStyle ( new QPEStyle ( ));