From 4ed967f2cb719aabd74f80be4ccb60a6594b089a Mon Sep 17 00:00:00 2001
From: Michele Calgaro <michele.calgaro@yahoo.it>
Date: Sun, 31 Mar 2019 23:49:47 +0900
Subject: Fixed use of SAK in lock process when autologin is used in TDM. This
 resolves bug 2945.

Manually cherry-picked from commit 7aa9258f.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
---
 tdm/backend/CMakeLists.txt |  3 ++-
 tdm/backend/dm.c           |  4 ++--
 tdm/backend/session.c      | 25 +++++++++++++++++++++++++
 3 files changed, 29 insertions(+), 3 deletions(-)

(limited to 'tdm/backend')

diff --git a/tdm/backend/CMakeLists.txt b/tdm/backend/CMakeLists.txt
index da3f3ac03..bece8be72 100644
--- a/tdm/backend/CMakeLists.txt
+++ b/tdm/backend/CMakeLists.txt
@@ -15,6 +15,7 @@ include_directories(
   ${CMAKE_CURRENT_BINARY_DIR}
   ${CMAKE_BINARY_DIR}
   ${DBUS_INCLUDE_DIRS}
+  ${CMAKE_SOURCE_DIR}/tdm/kfrontend
 )
 
 link_directories(
@@ -27,7 +28,7 @@ add_custom_command( OUTPUT config.ci
   COMMAND perl -w ${CMAKE_SOURCE_DIR}/tdm/confproc.pl ${CMAKE_SOURCE_DIR}/tdm/config.def config.ci
   DEPENDS ${CMAKE_SOURCE_DIR}/tdm/confproc.pl ${CMAKE_SOURCE_DIR}/tdm/config.def )
 
-set_property( SOURCE auth.c APPEND PROPERTY OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/config.ci )
+set_property( SOURCE auth.c session.c APPEND PROPERTY OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/config.ci )
 
 if( WITH_XDMCP )
   set( XDMCP_LIBRARIES "Xdmcp" )
diff --git a/tdm/backend/dm.c b/tdm/backend/dm.c
index cd672f39a..996059c87 100644
--- a/tdm/backend/dm.c
+++ b/tdm/backend/dm.c
@@ -570,12 +570,12 @@ StartRemoteLogin( struct display *d )
 		/* Let's try again with some standard paths */
 		argv[0] = (char *)realloc(argv[0], strlen("/usr/X11R6/bin/X") + 1);
 		if (argv[0] != NULL) {
-			argv[0] = "/usr/X11R6/bin/X";
+			strcpy(argv[0], "/usr/X11R6/bin/X");
 			Debug( "exec %\"[s\n", argv );
 			(void)execv( argv[0], argv );
 			LogError( "X server %\"s cannot be executed\n", argv[0] );
 		
-			argv[0] = "/usr/bin/X"; /* Shorter than the previous file name */
+			strcpy(argv[0], "/usr/bin/X"); // Shorter than the previous file name
 			Debug( "exec %\"[s\n", argv );
 			(void)execv( argv[0], argv );
 			LogError( "X server %\"s cannot be executed\n", argv[0] );
diff --git a/tdm/backend/session.c b/tdm/backend/session.c
index 4b5f372db..0bcd92d5f 100644
--- a/tdm/backend/session.c
+++ b/tdm/backend/session.c
@@ -34,6 +34,8 @@ from the copyright holder.
  * subdaemon event loop, etc.
  */
 
+
+#include "tdmconfig.h"
 #include "dm.h"
 #include "dm_error.h"
 
@@ -49,6 +51,8 @@ from the copyright holder.
 #include "consolekit.h"
 #endif
 
+#define TSAK_FIFO_FILE "/tmp/tdesocket-global/tsak"
+
 struct display *td;
 const char *td_setup = "auto";
 
@@ -576,6 +580,27 @@ ManageSession( struct display *d )
 		goto regreet;
 	}
 
+	int start_tsak = 0;
+#ifdef BUILD_TSAK
+  start_tsak = d->useSAK;
+#endif
+  if (start_tsak) {
+		if (system(KDE_BINDIR "/tsak checkdeps") != 0) {
+			start_tsak = 0;
+		}
+	}
+  if (start_tsak) {
+		int ret_pid = fork();
+		if (ret_pid == 0) {
+			// Child process
+			system(KDE_BINDIR "/tsak");
+			exit(0);
+		}
+	}
+	else {
+		remove(TSAK_FIFO_FILE);
+	}
+
 	tdiff = time( 0 ) - td->hstent->lastExit - td->openDelay;
 	if (AutoLogon( tdiff )) {
 		if (!Verify( conv_auto, FALSE ))
-- 
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