tdm: a more robust Xsession scriptfeat/tdm-xsession

- source *xprofile and /etc/X11/xinit/xinitrc.d/* files
- provide a fallback for running session if Xsession does not present
- import Xresources via xrdb

For reference see also:

- older Xsession version used in gentoo:
  https://mirror.git.trinitydesktop.org/gitea/TDE/tde-packaging-gentoo/src/branch/master/trinity-base/tdm/files/tdm-14.0.8-xsession.script
- Xsession version from sddm (ultimately derived from kdm3 one as well):
  https://github.com/sddm/sddm/blob/662a409aabec39bdbff2a13fa008e6a7a873dca1/data/scripts/Xsession

Closes: https://mirror.git.trinitydesktop.org/gitea/TDE/tdebase/issues/668
Signed-off-by: Alexander Golubev <fatzer2@gmail.com>

1 files changed, 50 insertions, 4 deletions

diff --git a/tdm/kfrontend/gentdmconf.c b/tdm/kfrontend/gentdmconf.c
index 0576eef56..e4f907693 100644
--- a/tdm/kfrontend/gentdmconf.c
+++ b/tdm/kfrontend/gentdmconf.c
@@ -632,8 +632,6 @@ static const char def_session1[] =
 "#! /bin/sh\n"
 "# Xsession - run as user\n"
 "\n"
-"session=$1\n"
-"\n"
 "# Note that the respective logout scripts are not sourced.\n"
 "case $SHELL in\n"
 "  */bash)\n"
@@ -675,8 +673,56 @@ static const char def_session2[] =
 "    [ -f $HOME/.profile ] && . $HOME/.profile\n"
 "    ;;\n"
 "esac\n"
-"# invoke global X session script\n"
-". /etc/X11/Xsession\n";
+"\n"
+"# source system & user xprofiles\n"
+"[ -f /etc/xprofile ] && . /etc/xprofile\n"
+"[ -f $HOME/.xprofile ] && . $HOME/.xprofile\n"
+"\n"
+"# run system xinitrc shell scripts\n"
+"if [ -d /etc/X11/xinit/xinitrc.d ]; then\n"
+"  for i in /etc/X11/xinit/xinitrc.d/* ; do\n"
+"    [ -x \"$i\" ] && . \"$i\"\n"
+"  done\n"
+"fi\n"
+"\n"
+"# if the system Xsession startup script is present use it\n"
+"if [ -x /etc/X11/Xsession ]; then\n"
+"  exec /etc/X11/Xsession \"$@\"\n"
+"else # otherwice fallback to running the session manually\n"
+"  # apply Xresources configs\n"
+"  if type xrdb >/dev/null 2>&1; then\n"
+"    if [ -d /etc/X11/Xresources ]; then\n"
+"      for i in /etc/X11/Xresources/*; do\n"
+"        [ -f \"$i\" ] && xrdb -merge \"$i\"\n"
+"      done\n"
+"    elif [ -f /etc/X11/Xresources ]; then\n"
+"          xrdb -merge /etc/X11/Xresources\n"
+"    fi\n"
+"    [ -f $HOME/.Xresources ] && xrdb -merge $HOME/.Xresources\n"
+"  fi\n"
+"  \n"
+"  session=$1\n"
+"\n"
+"  case \"$session\" in\n"
+"    \"\")\n"
+"      exec xmessage -center -buttons OK:0 -default OK \"Sorry, \\\"$DESKTOP_SESSION\\\" is not a valid session.\"\n"
+"      ;;\n"
+"    failsafe)\n"
+"      exec xterm -geometry 80x24-0-0\n"
+"      ;;\n"
+"    custom)\n"
+"      exec ${SHELL:-/bin/sh} $HOME/.xsession\n"
+"      ;;\n"
+"    default)\n"
+"      exec " KDE_BINDIR "/starttde\n"
+"      ;;\n"
+"    *)\n"
+"      eval exec \"$session\"\n"
+"      ;;\n"
+"  esac\n"
+"fi\n"
+"\n"
+"exec xmessage -center -buttons OK:0 -default OK \"Sorry, cannot execute $session. Check $DESKTOP_SESSION.desktop.\"\n";
 
 static const char def_background[] =
 "[Desktop0]\n"