#!/bin/bash

# Run integration tests (on the installed packages).
#
# (C) 2005-2012 Martin Pitt <mpitt@debian.org>
# (C) 2012-2022 Christoph Berg <myon@debian.org>
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.

set -eu

# default config
TESTSDIR="$(dirname $0)/t"
: ${PG_UMASKS="077"} # default umask(s) to try

help ()
{
    echo "postgresql-common testsuite"
    echo "Syntax: $0 [options] [test ...]"
    echo "    -D               drop all existing clusters (USE WITH CARE)"
    echo "    -f number        run tests starting at this number"
    echo "    -i               install packages for versions specified by -v"
    echo "    -M               don't mount tmpfses, run in the host system"
    echo "    -s               start a shell in the testbed on failure"
    echo "    -u 'umask ...'   umasks to run testsuite with [default: 077]"
    echo "    -v 'version ...' PostgreSQL versions to test [default: client versions installed]"
    echo "    -V               debug output"
    exit ${1:-0}
}

# option parsing
while getopts "Dhf:iMsu:v:V" opt ; do
    case $opt in
        D) DROP_ALL_CLUSTERS=1 ;;
        f) FROM="$OPTARG" ;;
        i) INSTALL=1 ;;
        h) help ;;
        M) export NO_TMPFS=1 ;;
        s) export FAILURE="shell" ;;
        u) PG_UMASKS="$OPTARG" ;;
        v) export PG_VERSIONS="$OPTARG" ;; # used in t/TestLib.pm
        V) VERBOSE=1 ;;
        *) help 1 ;;
    esac
done

if [ "$(id -u)" != 0 ]; then
    echo "Error: this test suite needs to be run as root" >&2
    exit 1
fi

# install packages for versions specified by -v
# needs network for apt, so run before unshare
if [ "${INSTALL:-}" ] && [ -z "${UNSHARED:-}" ]; then
    . /etc/os-release
    case $ID in
        debian|ubuntu)
            for v in $PG_VERSIONS; do
                case $v in 8.*|9.*|10|11)
                    [ "$(perl -I. -le 'use PgCommon; print $PgCommon::have_python2')" = "1" ] && PYTHON2_PACKAGE=postgresql-plpython-$v
                    ;;
                esac
                apt-get install -y \
                    postgresql-contrib-$v \
                    postgresql-plperl-$v \
                    ${PYTHON2_PACKAGE:-} \
                    $(dpkg --compare-versions $v ge 9.1 && echo postgresql-plpython3-$v) \
                    postgresql-pltcl-$v \
                    postgresql-server-dev-$v
            done
            apt-get install -y \
                debhelper \
                libecpg-dev \
                procps systemd \
                netcat-openbsd \
                hunspell-en-us \
                gcc
        ;;
        redhat|centos)
            for v in $PG_VERSIONS; do
                vv=$(echo $v | tr -d .)
                yum install -y \
                    postgresql$vv-contrib \
                    postgresql$vv-plperl \
                    postgresql$vv-plpython3 \
                    postgresql$vv-pltcl \
                    postgresql$vv-devel
            done
            yum install -y \
                nmap-ncat \
                perl-Test-Simple perl-Time-HiRes \
                gcc
        ;;
        *)
            echo "Unknown distribution ID $ID in /etc/os-release"
            exit 1
        ;;
    esac
fi

# shift away args
shift $(($OPTIND - 1))

# stop currently running clusters
if [ -d /run/systemd/system ] ; then
    # stop postgresql@* explicitly (#759725)
    systemctl stop postgresql "postgresql@*" "pg_receivewal@*"
else
    service postgresql stop
fi

# drop all existing clusters if the user requested it
if [ "${DROP_ALL_CLUSTERS:-}" ]; then
    pg_lsclusters -h | while read ver cluster rest; do
        pg_dropcluster $ver $cluster
    done
fi

# set up test directories
dirs="/etc/postgresql /var/lib/postgresql /var/log/postgresql /var/run/postgresql /var/backups/postgresql"

if [ -z "${NO_TMPFS:-}" ]; then
    # clean up after us
    cleanup () {
        set +e
        umount -l $dirs
        sed -i -e '/# by pg-testsuite/d' /etc/postgresql-common/createcluster.conf
        ./pg_updateaptconfig
        systemctl daemon-reload 2> /dev/null || : # poke generator to handle the system's clusters again
    }
    trap "cleanup" 0 HUP INT QUIT ILL ABRT PIPE TERM

    for d in $dirs; do
        mkdir -p $d
        mount -t tmpfs tmpfs $d
    done

    chown postgres:postgres     /etc/postgresql ; chmod  755     /etc/postgresql
    chown postgres:postgres /var/lib/postgresql ; chmod  755 /var/lib/postgresql
    chown     root:postgres /var/log/postgresql ; chmod 1775 /var/log/postgresql
    chown postgres:postgres /var/run/postgresql ; chmod 2775 /var/run/postgresql /var/backups/postgresql
fi

if [ -d /run/systemd/system ]; then
    systemctl daemon-reload # poke generator to forget the system's clusters
fi

# the RPM packages enable the logging_collector by default, which the testsuite
# doesn't like. We disable it unconditionally here.
if ! grep -q logging_collector /etc/postgresql-common/createcluster.conf; then
    echo "logging_collector = off # by pg-testsuite" >> /etc/postgresql-common/createcluster.conf
fi

# reset core limit for pg_ctl tests
ulimit -S -c 0

# set environment
unset TMPDIR
unset LC_ALL
export LANG=en_US.utf8

# set variables which cause taint check errors
export IFS
export CDPATH=/usr
export ENV=/nonexisting
export BASH_ENV=/nonexisting

if [ $# -eq 0 ]; then
    set -- $TESTSDIR/*.t
fi

# dump environment for debugging
if [ "${VERBOSE:-}" ]; then
    echo "Environment:"
    env | sort
    echo "Mounts:"
    cat /proc/mounts
    echo "Namespaces:"
    ls -l /proc/self/ns
    echo
fi

for U in $PG_UMASKS; do
    echo "====== Running all tests with umask $U ======="
    umask $U
    for T; do
        TBASE=${T##*/}
        [ "${FROM:-}" ] && [ "${TBASE%%_*}" -lt "${FROM:-}" ] && continue
        echo "### PostgreSQL test $TBASE ###"
        perl -I. $T || {
            EXIT=$?
            FAILED_TESTS="${FAILED_TESTS:-} $T"
            if [ "${FAILURE:-}" ]; then
                echo "*** $TBASE failed with status $EXIT, dropping you into a shell in the testbed ***"
                ${SHELL:-/bin/sh}
            fi
        }
        echo "### End test $TBASE ###"
        echo
    done
done

if [ "${FAILED_TESTS:-}" ]; then
    echo "Failed tests: $FAILED_TESTS"
    echo
fi

exit ${EXIT:-0}