livecd-rootfs/live-build/ubuntu-touch/hooks/01-setup_user.chroot

#!/bin/sh -x

USER=phablet
UGID=32011

echo "I: creating default user $USER"
adduser --gecos $USER --disabled-login $USER --uid $UGID

echo "I: set user $USER password to blank"
passwd -d $USER

adduser --gecos system --no-create-home --disabled-login --disabled-password system --uid 1000
adduser --gecos radio --no-create-home --disabled-login --disabled-password radio --uid 1001

# Enable libnss-extrusers
sed -i 's/^group:.*compat/\0 extrausers/' /etc/nsswitch.conf
sed -i 's/^passwd:.*compat/\0 extrausers/' /etc/nsswitch.conf
sed -i 's/^shadow:.*compat/\0 extrausers/' /etc/nsswitch.conf

# Allow using pam_extrausers, with relatively weak passwords (no obscure keyword, and with minlen=4)
sed -i '/Primary/a password        [success=2 default=ignore]      pam_extrausers.so minlen=4 sha512' /etc/pam.d/common-password
sed -i '/Primary/a auth    [success=2 authinfo_unavail=ignore default=1] pam_extrausers.so nullok' /etc/pam.d/common-auth

# Move user from /etc to extrausers location
grep "^$USER" /etc/group >> /var/lib/extrausers/group
grep "^$USER" /etc/passwd >> /var/lib/extrausers/passwd
grep "^$USER" /etc/shadow >> /var/lib/extrausers/shadow
chmod 0644 /var/lib/extrausers/group
chmod 0644 /var/lib/extrausers/passwd
chmod 0640 /var/lib/extrausers/shadow
chown root:shadow /var/lib/extrausers/shadow
sed -i "/^$USER/d" /etc/group
sed -i "/^$USER/d" /etc/passwd
sed -i "/^$USER/d" /etc/shadow

# Prevent the system user from being presented in the greeter by bumping MIN_UID
sed -i 's/^\(UID_MIN\s\+\).*/\11002/g' /etc/login.defs

mkdir -p /home/$USER/Music
mkdir -p /home/$USER/Pictures
mkdir -p /home/$USER/Videos
mkdir -p /home/$USER/Downloads
mkdir -p /home/$USER/Documents
chown -R $UGID:$UGID /home/$USER