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hubzilla_ynh/scripts/_common.sh
2019-04-04 22:18:56 +05:30

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#!/bin/bash
#=================================================
# COMMON VARIABLES
#=================================================
# dependencies used by the app
pkg_dependencies="php-mbstring php-cli php-imagick php-xml php-zip"
#=================================================
# PERSONAL HELPERS
#=================================================
#=================================================
# EXPERIMENTAL HELPERS
#=================================================
# Create a dedicated fail2ban config (jail and filter conf files)
#
# usage: ynh_add_fail2ban_config log_file filter [max_retry [ports]]
# | arg: log_file - Log file to be checked by fail2ban
# | arg: failregex - Failregex to be looked for by fail2ban
# | arg: max_retry - Maximum number of retries allowed before banning IP address - default: 3
# | arg: ports - Ports blocked for a banned IP address - default: http,https
ynh_add_fail2ban_config () {
# Process parameters
logpath=$1
failregex=$2
max_retry=${3:-3}
ports=${4:-http,https}
test -n "$logpath" || ynh_die "ynh_add_fail2ban_config expects a logfile path as first argument and received nothing."
test -n "$failregex" || ynh_die "ynh_add_fail2ban_config expects a failure regex as second argument and received nothing."
finalfail2banjailconf="/etc/fail2ban/jail.d/$app.conf"
finalfail2banfilterconf="/etc/fail2ban/filter.d/$app.conf"
ynh_backup_if_checksum_is_different "$finalfail2banjailconf" 1
ynh_backup_if_checksum_is_different "$finalfail2banfilterconf" 1
sudo tee $finalfail2banjailconf <<EOF
[$app]
enabled = true
port = $ports
filter = $app
logpath = $logpath
maxretry = $max_retry
EOF
sudo tee $finalfail2banfilterconf <<EOF
[INCLUDES]
before = common.conf
[Definition]
failregex = $failregex
ignoreregex =
EOF
ynh_store_file_checksum "$finalfail2banjailconf"
ynh_store_file_checksum "$finalfail2banfilterconf"
systemctl restart fail2ban
local fail2ban_error="$(journalctl -u fail2ban | tail -n50 | grep "WARNING.*$app.*")"
if [ -n "$fail2ban_error" ]
then
echo "[ERR] Fail2ban failed to load the jail for $app" >&2
echo "WARNING${fail2ban_error#*WARNING}" >&2
fi
}
# Remove the dedicated fail2ban config (jail and filter conf files)
#
# usage: ynh_remove_fail2ban_config
ynh_remove_fail2ban_config () {
ynh_secure_remove "/etc/fail2ban/jail.d/$app.conf"
ynh_secure_remove "/etc/fail2ban/filter.d/$app.conf"
sudo systemctl restart fail2ban
}
#=================================================
# FUTURE OFFICIAL HELPERS
#=================================================