ltcp/aufgabe3/newuser

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2013-11-04 22:14:21 +00:00
#!/bin/bash
set -e
# check for root
if [[ $EUID -ne 0 ]]; then
echo "This script must be run as root" 1>&2
exit 1
fi
# check for arguments
if [[ $# -ne 1 ]]; then
echo "USAGE: $0 username" 1>&2
exit 1
fi
# check if user already exists
if ! id "$1" &> /dev/null; then
echo "Adding user..."
useradd --base-dir /home --create-home "$1"
fi
# check if SSH key for user already exists
if [[ ! -f "/home/$1/.ssh/id_ecdsa" ]]; then
echo "Generating SSH key for user..."
sudo --user "$1" ssh-keygen -t ecdsa -N "" -b 521 -f "/home/$1/.ssh/id_ecdsa" > /dev/null
fi
# check if SSH key is already added to list of authorized keys
sudo -u "$1" touch /home/$1/.ssh/authorized_keys
if ! grep -q "`cat /home/$1/.ssh/id_ecdsa.pub`" /home/$1/.ssh/authorized_keys; then
echo "Adding SSH key to list of authorized keys for user..."
cat "/home/$1/.ssh/id_ecdsa.pub" | sudo --user "$1" tee "/home/$1/.ssh/authorized_keys" > /dev/null
fi
export DIR="`mktemp -d`"
trap "cd /; rm -rf $DIR" EXIT
cd "$DIR"
export GIT_AUTHOR_NAME=$SUDO_USER
git clone "git@zotac0:gitolite-admin" "$DIR" > /dev/null
# check if SSH key is already registered with git
if [[ ! -f "$DIR/keydir/$1@$HOSTNAME.pub" ]]; then
echo "Adding SSH key to git..."
cp "/home/$1/.ssh/id_ecdsa.pub" "$DIR/keydir/$1@$HOSTNAME.pub"
git add "$DIR/keydir/$1@$HOSTNAME.pub"
git commit --all --message="User \"$1\" added" > /dev/null
git push > /dev/null
fi