#!/usr/share/ucs-test/runner bash
# shellcheck shell=bash
## desc: Check unclosed file handles after umc password change
## bugs: [51366]
## packages:
##  - univention-management-console-module-udm
##  - univention-management-console-module-passwordchange
## roles-not:
##  - memberserver
##  - basesystem
## tags:
##  - skip_admember
## join: true
## exposure: dangerous

# shellcheck source=../../lib/base.sh
. "$TESTLIBPATH/base.sh" || exit 137
# shellcheck source=../../lib/user.sh
. "$TESTLIBPATH/user.sh" || exit 137
# shellcheck source=../../lib/udm.sh
. "$TESTLIBPATH/udm.sh" || exit 137
# shellcheck source=../../lib/random.sh
. "$TESTLIBPATH/random.sh" || exit 137

MAX_USERS=4
username="$(random_chars)"

# we work in parallel and we want to abort all executions with a single CTRL-C:
function ctrl_c {
	killall umc-set "$0"
}
trap ctrl_c INT
trap "systemctl restart univention-management-console-server" EXIT

# returns the number of open connections by the umc-server
function get_number_of_close_waits() {
    lsof -p "$(pidof -x univention-management-console-server)" | grep -c CLOSE_WAIT
}

function get_user_ldap_domain() {
    ucr get tests/domainadmin/account | grep -Eo 'cn=.*'
}

# $1 = number of users
function create_sample_users {
	DOMAIN=$(get_user_ldap_domain)
    for i in $(seq 1 "$1"); do
        set -x
        # if the user already exists we want to reset the password
        udm users/user modify --dn uid="$username""$i","$DOMAIN" \
            --set overridePWHistory=1 \
            --set password="univention_0" ||\
        udm users/user create  --superordinate "$DOMAIN" \
            --set lastname="nobody" \
            --set username="$username$i" \
            --set password="univention_0"
        set +x
    done
}

function remove_sample_users {
    DOMAIN=$(get_user_ldap_domain)
    for i in $(seq 1 "$1"); do
        set -x
        # if the user already exists we want to reset the password
        udm users/user remove --dn uid="$username""$i","$DOMAIN"
        set +x
    done
}

function umc_cycle_password {
	USER=$1
	umc-set -U "$USER" -P "univention_0" -e -o '{"password": {"password": "univention_0", "new_password": "univention_1"}}';
	umc-set -U "$USER" -P "univention_1" -e -o '{"password": {"password": "univention_1", "new_password": "univention_2"}}';
	umc-set -U "$USER" -P "univention_2" -e -o '{"password": {"password": "univention_2", "new_password": "univention_3"}}';
	umc-set -U "$USER" -P "univention_3" -e -o '{"password": {"password": "univention_3", "new_password": "univention_0"}}';
}

# $1 = number of users
function parallel_cycle_passwords {
    for i in $(seq 1 "$1"); do
        set -x
        umc_cycle_password "$username""$i" &
        set +x
    done
}

set -e
systemctl restart univention-management-console-server

create_sample_users $MAX_USERS
parallel_cycle_passwords $MAX_USERS
sleep 60
systemctl restart slapd.service
sleep 2

close_wait=$(get_number_of_close_waits)
echo "number of close wait connections: $close_wait"

remove_sample_users $MAX_USERS
if [ "$close_wait" -gt 3 ]; then
    fail_fast 110 "number of close wait connections > 3"
fi

# vim: ft=sh
