2 # (C) 2008 Canonical Ltd.
3 # Author: Martin Pitt <martin.pitt@ubuntu.com>
4 # License: GPL v2 or later
5 # modified by David D Lowe and Thomas Detoux
7 # Setup user and temporary home directory for guest session.
8 # If this succeeds, this script needs to print the username as the last line to
13 HOME=`mktemp -td guest-XXXXXX`
14 USER=`echo $HOME | sed 's/\(.*\)guest/guest/'`
16 # if $USER already exists, it must be a locked system account with no existing
18 if PWSTAT=`passwd -S "$USER"` 2>/dev/null; then
19 if [ "`echo \"$PWSTAT\" | cut -f2 -d\ `" != "L" ]; then
20 echo "User account $USER already exists and is not locked"
23 PWENT=`getent passwd "$USER"` || {
24 echo "getent passwd $USER failed"
27 GUEST_UID=`echo "$PWENT" | cut -f3 -d:`
28 if [ "$GUEST_UID" -ge 500 ]; then
29 echo "Account $USER is not a system user"
32 HOME=`echo "$PWENT" | cut -f6 -d:`
33 if [ "$HOME" != / ] && [ "${HOME#/tmp}" = "$HOME" ] && [ -d "$HOME" ]; then
34 echo "Home directory of $USER already exists"
38 # does not exist, so create it
39 adduser --system --no-create-home --home / --gecos "Guest" --group --shell /bin/bash $USER || {
46 # create temporary home directory
47 mount -t tmpfs -o mode=700 none "$HOME" || { rm -rf "$HOME"; exit 1; }
48 chown $USER:$USER "$HOME"
49 gs_skel=/etc/guest-session/skel/
50 if [ -d "$gs_skel" ] && [ -n "`find $gs_skel -type f`" ]; then
51 cp -rT $gs_skel "$HOME"
53 cp -rT /etc/skel/ "$HOME"
55 chown -R $USER:$USER "$HOME"
56 usermod -d "$HOME" "$USER"
62 # disable some services that are unnecessary for the guest session
63 mkdir --parents "$HOME"/.config/autostart
64 cd /etc/xdg/autostart/
65 services="jockey-kde.desktop jockey-gtk.desktop update-notifier.desktop user-dirs-update-gtk.desktop"
66 for service in $services
68 if [ -e /etc/xdg/autostart/"$service" ] ; then
69 cp "$service" "$HOME"/.config/autostart
70 echo "X-GNOME-Autostart-enabled=false" >> "$HOME"/.config/autostart/"$service"
74 # disable Unity shortcut hint
75 mkdir -p "$HOME"/.cache/unity
76 touch "$HOME"/.cache/unity/first_run.stamp
78 STARTUP="$HOME"/.config/autostart/startup-commands.desktop
79 echo "[Desktop Entry]" > $STARTUP
80 echo "Name=Startup commands" >> $STARTUP
81 echo "Type=Application" >> $STARTUP
82 echo "NoDisplay=true" >> $STARTUP
83 echo "Exec=/usr/lib/lightdm/guest-session-auto.sh" >> $STARTUP
85 echo "export DIALOG_SLEEP=4" >> "$HOME"/.profile
87 mkdir -p "$HOME"/.kde/share/config
88 echo "[Basic Settings]" >> "$HOME"/.kde/share/config/nepomukserverrc
89 echo "Start Nepomuk=false" >> "$HOME"/.kde/share/config/nepomukserverrc
91 echo "[Event]" >> "$HOME"/.kde/share/config/notificationhelper
92 echo "hideHookNotifier=true" >> "$HOME"/.kde/share/config/notificationhelper
93 echo "hideInstallNotifier=true" >> "$HOME"/.kde/share/config/notificationhelper
94 echo "hideRestartNotifier=true" >> "$HOME"/.kde/share/config/notificationhelper
96 # Load restricted session
97 #dmrc='[Desktop]\nSession=guest-restricted'
98 #/bin/echo -e "$dmrc" > "$HOME"/.dmrc
100 # set possible local guest session preferences
101 if [ -f /etc/guest-session/prefs.sh ]; then
102 . /etc/guest-session/prefs.sh
105 chown -R $USER:$USER "$HOME"
114 PWENT=`getent passwd "$USER"` || {
115 echo "Error: invalid user $USER"
118 UID=`echo "$PWENT" | cut -f3 -d:`
119 HOME=`echo "$PWENT" | cut -f6 -d:`
121 if [ "$UID" -ge 500 ]; then
122 echo "Error: user $USER is not a system user."
126 if [ "${HOME}" = "${HOME#/tmp/}" ]; then
127 echo "Error: home directory $HOME is not in /tmp/."
131 # kill all remaining processes
132 while ps h -u "$USER" >/dev/null; do
133 killall -9 -u "$USER" || true
137 umount "$HOME" || umount -l "$HOME" || true
140 # remove leftovers in /tmp
141 find /tmp -mindepth 1 -maxdepth 1 -uid "$UID" -print0 | xargs -0 rm -rf || true
143 # remove possible /media/guest-XXXXXX folder
144 if [ -d /media/"$USER" ]; then
145 for dir in $( find /media/"$USER" -mindepth 1 -maxdepth 1 ); do
146 umount "$dir" || true
148 rmdir /media/"$USER" || true
151 deluser --system "$USER"
160 echo "Usage: $0 remove [account]"
166 echo "Usage: $0 add|remove"