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 echo "[Desktop Entry]" >> "$HOME"/.config/autostart/screenlocking.desktop
75 echo "Name='Disable screen locking in guest session'" >> "$HOME"/.config/autostart/screenlocking.desktop
76 echo "Type=Application" >> "$HOME"/.config/autostart/screenlocking.desktop
77 echo "Exec=gsettings set org.gnome.desktop.lockdown disable-lock-screen true" >> "$HOME"/.config/autostart/screenlocking.desktop
79 mkdir -p "$HOME"/.kde/share/config
80 echo "[Basic Settings]" >> "$HOME"/.kde/share/config/nepomukserverrc
81 echo "Start Nepomuk=false" >> "$HOME"/.kde/share/config/nepomukserverrc
83 echo "[Event]" >> "$HOME"/.kde/share/config/notificationhelper
84 echo "hideHookNotifier=true" >> "$HOME"/.kde/share/config/notificationhelper
85 echo "hideInstallNotifier=true" >> "$HOME"/.kde/share/config/notificationhelper
86 echo "hideRestartNotifier=true" >> "$HOME"/.kde/share/config/notificationhelper
88 # Load restricted session
89 #dmrc='[Desktop]\nSession=guest-restricted'
90 #/bin/echo -e "$dmrc" > "$HOME"/.dmrc
92 chown -R $USER:$USER "$HOME"
94 # set possible local guest session preferences
95 if [ -f /etc/guest-session/prefs.sh ]; then
96 . /etc/guest-session/prefs.sh
106 PWENT=`getent passwd "$USER"` || {
107 echo "Error: invalid user $USER"
110 UID=`echo "$PWENT" | cut -f3 -d:`
111 HOME=`echo "$PWENT" | cut -f6 -d:`
113 if [ "$UID" -ge 500 ]; then
114 echo "Error: user $USER is not a system user."
118 if [ "${HOME}" = "${HOME#/tmp/}" ]; then
119 echo "Error: home directory $HOME is not in /tmp/."
123 # kill all remaining processes
124 while ps h -u "$USER" >/dev/null; do
125 killall -9 -u "$USER" || true
129 umount "$HOME" || umount -l "$HOME" || true
132 # remove leftovers in /tmp
133 find /tmp -mindepth 1 -maxdepth 1 -uid "$UID" -print0 | xargs -0 rm -rf || true
135 deluser --system "$USER"
144 echo "Usage: $0 remove [account]"
150 echo "Usage: $0 add|remove"