#!/bin/bash

if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail

SCRIPTDIR=$(dirname $0)
VENVDIR=/opt/keylime

KLDIR=/tmp/keylime

# create the virtual environment
if [ $DIB_PYTHON_VERSION == 3 ]; then
    $DIB_PYTHON -m venv $VENVDIR
else
    $DIB_PYTHON -m virtualenv $VENVDIR
fi

install -d /etc/ima/

install -c -m 0644 ${SCRIPTDIR}/ima-policy /etc/ima/ima-policy

# install Keylime-agent inside the virtual environment
$VENVDIR/bin/pip install 'pip>=19.1.1'
$VENVDIR/bin/pip install -r $KLDIR/requirements.txt $KLDIR
# dataclasses are missing in python3.6, so we have to install it manually
$VENVDIR/bin/pip install dataclasses
ln -s $VENVDIR/bin/keylime_agent /usr/local/bin/keylime_agent

if [ "$DIB_KEYLIME_AGENT_REGISTRAR_IP" != "0" ]; then
    sed -i "s/registrar_ip = 127.0.0.1/registrar_ip = "$DIB_KEYLIME_AGENT_REGISTRAR_IP"/" /etc/keylime.conf
fi
if [ "$DIB_KEYLIME_AGENT_REGISTRAR_PORT" != "8890" ]; then
    sed -i "s/registrar_port = 8890/registrar_port = "$DIB_KEYLIME_AGENT_REGISTRAR_PORT"/" /etc/keylime.conf
fi
if [ "$DIB_KEYLIME_AGENT_PORT" != "9002" ]; then
    sed -i "s/cloudagent_port = 9002/cloudagent_port = "$DIB_KEYLIME_AGENT_PORT"/" /etc/keylime.conf
fi
# set the agent uuid to hash_ek
sed -i 's/^\(agent\_uuid\s*=\s*\).*$/\1hash_ek/' /etc/keylime.conf
sed -i 's/^\(level\s*=\s*\).*$/\1DEBUG/' /etc/keylime.conf
sed -i 's/^\(cloudagent\_ip\s*=\s*\).*$/\10.0.0.0/' /etc/keylime.conf

# create allowlist and checksum
./$KLDIR/scripts/create_allowlist.sh /root/allowlist.txt sha256sum
touch /root/checksum.txt
sha256sum /root/allowlist.txt > /root/checksum.txt

case "$DIB_INIT_SYSTEM" in
    systemd)
        install -D -g root -o root -m 0644 ${SCRIPTDIR}/keylime-agent.service /usr/lib/systemd/system/keylime-agent.service
        ;;
    sysv)
        install -D -g root -o root -m 0755 ${SCRIPTDIR}/keylime-agent.init /etc/init.d/keylime-agent.init
        update-rc.d keylime-agent.init defaults
        ;;
    *)
        echo "Unsupported init system"
        exit 1
        ;;
esac