#!/bin/bash

# Run this script from the root of the systemd's git repository
# or set REPO_ROOT to a correct path.
#
# Example execution on Fedora:
# dnf install docker
# systemctl start docker
# export CONT_NAME="my-fancy-container"
# ci/travis-centos.sh SETUP RUN CLEANUP

PHASES=(${@:-SETUP RUN CLEANUP})
CENTOS_RELEASE="${CENTOS_RELEASE:-latest}"
CONT_NAME="${CONT_NAME:-centos-$CENTOS_RELEASE-$RANDOM}"
DOCKER_EXEC="${DOCKER_EXEC:-docker exec -it $CONT_NAME}"
DOCKER_RUN="${DOCKER_RUN:-docker run}"
REPO_ROOT="${REPO_ROOT:-$PWD}"
ADDITIONAL_DEPS=(libasan libubsan net-tools strace nc e2fsprogs quota dnsmasq)
# RHEL8 options
CONFIGURE_OPTS=(
    -Dsysvinit-path=/etc/rc.d/init.d
    -Drc-local=/etc/rc.d/rc.local
    -Ddns-servers=''
    -Ddev-kvm-mode=0666
    -Dkmod=true
    -Dxkbcommon=true
    -Dblkid=true
    -Dseccomp=true
    -Dima=true
    -Dselinux=true
    -Dapparmor=false
    -Dpolkit=true
    -Dxz=true
    -Dzlib=true
    -Dbzip2=true
    -Dlz4=true
    -Dpam=true
    -Dacl=true
    -Dsmack=true
    -Dgcrypt=true
    -Daudit=true
    -Delfutils=true
    -Dlibcryptsetup=true
    -Delfutils=true
    -Dqrencode=false
    -Dgnutls=true
    -Dmicrohttpd=true
    -Dlibidn2=true
    -Dlibiptc=true
    -Dlibcurl=true
    -Defi=true
    -Dtpm=true
    -Dhwdb=true
    -Dsysusers=true
    -Ddefault-kill-user-processes=false
    -Dtests=unsafe
    -Dinstall-tests=true
    -Dtty-gid=5
    -Dusers-gid=100
    -Dnobody-user=nobody
    -Dnobody-group=nobody
    -Dsplit-usr=false
    -Dsplit-bin=true
    -Db_lto=false
    -Dnetworkd=false
    -Dtimesyncd=false
    -Ddefault-hierarchy=legacy
)

function info() {
    echo -e "\033[33;1m$1\033[0m"
}

set -e

source "$(dirname $0)/travis_wait.bash"

for phase in "${PHASES[@]}"; do
    case $phase in
        SETUP)
            info "Setup phase"
            info "Using Travis $CENTOS_RELEASE"
            # Pull a Docker image and start a new container
            docker pull centos:$CENTOS_RELEASE
            info "Starting container $CONT_NAME"
            $DOCKER_RUN -v $REPO_ROOT:/build:rw \
                        -w /build --privileged=true --name $CONT_NAME \
                        -dit --net=host centos:$CENTOS_RELEASE /sbin/init
            # Beautiful workaround for Fedora's version of Docker
            sleep 1
            $DOCKER_EXEC dnf makecache
            # Install and enable EPEL
            $DOCKER_EXEC dnf -q -y install epel-release dnf-utils "${ADDITIONAL_DEPS[@]}"
            $DOCKER_EXEC dnf config-manager -q --enable epel
            # Upgrade the container to get the most recent environment
            $DOCKER_EXEC dnf -y upgrade
            # Install systemd's build dependencies
            $DOCKER_EXEC dnf -q -y --enablerepo "PowerTools" builddep systemd
            ;;
        RUN)
            info "Run phase"
            # Build systemd
            docker exec -it -e CFLAGS='-g -O0 -ftrapv' $CONT_NAME meson build -Dtests=unsafe -Dslow-tests=true "${CONFIGURE_OPTS[@]}"
            $DOCKER_EXEC ninja -v -C build
            # Let's install the new systemd and "reboot" the container to avoid
            # unexpected fails due to incompatibilities with older systemd
            $DOCKER_EXEC ninja -C build install
            docker restart $CONT_NAME
            $DOCKER_EXEC ninja -C build test
            ;;
        RUN_ASAN|RUN_CLANG_ASAN)
            if [[ "$phase" = "RUN_CLANG_ASAN" ]]; then
                ENV_VARS="-e CC=clang -e CXX=clang++"
                MESON_ARGS="-Db_lundef=false" # See https://github.com/mesonbuild/meson/issues/764
            fi
            docker exec $ENV_VARS -it $CONT_NAME meson build --werror -Dtests=unsafe -Db_sanitize=address,undefined $MESON_ARGS "${CONFIGURE_OPTS[@]}"
            docker exec -it $CONT_NAME ninja -v -C build

            # Never remove halt_on_error from UBSAN_OPTIONS. See https://github.com/systemd/systemd/commit/2614d83aa06592aedb.
            travis_wait docker exec --interactive=false \
                -e UBSAN_OPTIONS=print_stacktrace=1:print_summary=1:halt_on_error=1 \
                -e ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1 \
                -e "TRAVIS=$TRAVIS" \
                -t $CONT_NAME \
                meson test --timeout-multiplier=3 -C ./build/ --print-errorlogs
            ;;
        CLEANUP)
            info "Cleanup phase"
            docker stop $CONT_NAME
            docker rm -f $CONT_NAME
            ;;
        *)
            echo >&2 "Unknown phase '$phase'"
            exit 1
    esac
done