Add install script fpr opendkim (via postfix milter)
This commit is contained in:
582
install_opendkim.sh
Executable file
582
install_opendkim.sh
Executable file
@@ -0,0 +1,582 @@
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#!/usr/bin/env bash
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clear
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echo -e "\n \033[32mStart Installation of OpenDKIM..\033[m"
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# -------------
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# - Settings
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# -------------
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#_src_base_dir="$(realpath $(dirname $0))"
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#conf_file="${_src_base_dir}/conf/install_opendkim.conf"
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log_file="$(mktemp)"
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_opendkim_packages="opendkim opendkim-tools"
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opendkim_base_dir="/etc/opendkim"
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opendkim_key_dir="${opendkim_base_dir}/keys"
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opendkim_conf_file="/etc/opendkim.conf"
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postfix_spool_dir="/var/spool/postfix"
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opendkim_socket_dir="${postfix_spool_dir}/opendkim"
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opendkim_socket_file="${opendkim_socket_dir}/opendkim.sock"
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postfix_needs_restart=false
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opendkim_needs_restart=false
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# -------------
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# --- Some functions
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# -------------
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echononl(){
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echo X\\c > /tmp/shprompt$$
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if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
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echo -e -n "$*\\c" 1>&2
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else
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echo -e -n "$*" 1>&2
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fi
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rm /tmp/shprompt$$
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}
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fatal(){
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echo ""
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echo -e "fatal error: $*"
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echo ""
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echo -e "\t\033[31m\033[1mInstalllation will be interrupted\033[m\033[m"
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echo ""
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exit 1
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}
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error(){
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echo ""
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echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*"
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echo ""
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}
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warn (){
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echo ""
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echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
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echo ""
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}
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info (){
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echo ""
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echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*"
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echo ""
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}
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echo_done() {
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echo -e "\033[80G[ \033[32mdone\033[m ]"
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}
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echo_ok() {
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echo -e "\033[80G[ \033[32mok\033[m ]"
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}
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echo_warning() {
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echo -e "\033[80G[ \033[33m\033[1mwarn\033[m ]"
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}
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echo_failed(){
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echo -e "\033[80G[ \033[1;31mfailed\033[m ]"
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}
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echo_skipped() {
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echo -e "\033[80G[ \033[37mskipped\033[m ]"
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}
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# -------------
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# - Some pre-installation tasks
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# -------------
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# - Is 'systemd' supported on this system
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# -
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if [ "X`which systemd`" = "X" ]; then
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SYSTEMD_EXISTS=false
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else
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SYSTEMD_EXISTS=true
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fi
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# =============
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# - Start Installation
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# =============
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echo ""
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# - Install OpenDKIM
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# -
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echononl " Install needed debian packages.."
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opendkim_packages=""
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packages_installed=false
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for _pkg in $_opendkim_packages ; do
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if aptitude search "$_pkg" | grep " $_pkg " | grep -e "^i" > /dev/null 2>&1 ; then
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continue
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else
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opendkim_packages="$opendkim_packages $_pkg"
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fi
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done
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if [[ -n "$opendkim_packages" ]]; then
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DEBIAN_FRONTEND=noninteractive apt-get -y install $opendkim_packages > /dev/null 2> "$log_file"
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packages_installed=true
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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else
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echo_skipped
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fi
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# - Add user 'postfix' to group 'opendkim'
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# -
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echononl " Add user 'postfix' to group 'opendkim'.."
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if grep opendkim /etc/group | grep -q postfix 2> /dev/null ; then
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echo_skipped
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else
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adduser postfix opendkim 2> "$log_file"
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Save configuration file from distribution
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# -
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echononl " Save configuration file from distribution"
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if $packages_installed ; then
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cp -a $opendkim_conf_file $opendkim_conf_file.ORIG 2> "$log_file"
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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else
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echo_skipped
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fi
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# - Create OpenDKIM configuration
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# -
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echononl " Create OpenDKIM configuration"
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if [[ -f "$opendkim_conf_file" ]] \
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&& grep -i -q -E "Socket\s+local:$opendkim_socket_file" "$opendkim_conf_file" \
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&& grep -i -q -E "SigningTable.*${opendkim_base_dir}/signing.table" "$opendkim_conf_file" \
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&& grep -i -q -E "KeyTable.*${opendkim_base_dir}/key.table" "$opendkim_conf_file" ; then
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echo_skipped
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warn "OpenDKIM seems already be configured."
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else
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cat <<EOF > $opendkim_conf_file 2> $log_file
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# Datei $opendkim_conf_file
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# OpenDKIM agiert als Mail Filter (= Milter) in den
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# Modi signer (s) und verifier (v) und verwendet eine
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# Socket-Datei zur Kommunikation (alternativ: lokaler Port)
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Mode sv
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# Socket local:/var/run/opendkim/opendkim.sock
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# Socket local:$opendkim_socket_file
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# Socket inet:12345@localhost
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# OpenDKIM verwendet diesen Benutzer bzw.
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# diese Gruppe
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UserID opendkim:opendkim
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UMask 002
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PidFile /var/run/opendkim/opendkim.pid
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# OpenDKIM bei Problemen neustarten,
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# aber max. 10 mal pro Stunde
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AutoRestart yes
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AutoRestartRate 10/1h
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# Logging (wenn alles funktioniert eventuell reduzieren)
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Syslog yes
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SyslogSuccess yes
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LogWhy yes
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# Verfahren, wie Header und Body durch
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# OpenDKIM verarbeitet werden sollen.
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Canonicalization relaxed/simple
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# interne Mails nicht mit OpenDKIM verarbeiten
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ExternalIgnoreList refile:${opendkim_base_dir}/trusted
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InternalHosts refile:${opendkim_base_dir}/trusted
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# welche Verschlüsselungs-Keys sollen für welche
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# Domains verwendet werden
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# (refile: für Dateien mit regulären Ausdrücke)
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SigningTable refile:${opendkim_base_dir}/signing.table
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KeyTable ${opendkim_base_dir}/key.table
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# diesen Signatur-Algorithmus verwenden
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SignatureAlgorithm rsa-sha256
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# Always oversign From (sign using actual From and a null From to prevent
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# malicious signatures header fields (From and/or others) between the signer
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# and the verifier. From is oversigned by default in the Debian pacakge
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# because it is often the identity key used by reputation systems and thus
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# somewhat security sensitive.
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OversignHeaders From
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EOF
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Assign ownership to the opendkim user and restrict tthe
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# - file permissions:
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# -
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echononl " Assign ownership and file permissions.."
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chmod u=rw,go=r $opendkim_conf_file 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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# - Create the directories to hold OpenDKIM’s data files, assign
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# - ownership to the opendkim user, and restrict the file
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# - permissions:
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# -
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echononl " Create directory '$opendkim_base_dir'"
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if [[ -d "$opendkim_base_dir" ]] ; then
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echo_skipped
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else
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opendkim_needs_restart=true
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mkdir ${opendkim_base_dir} 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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echononl " Create directory '$opendkim_key_dir'"
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if [[ -d "$opendkim_key_dir" ]] ; then
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echo_skipped
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else
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opendkim_needs_restart=true
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mkdir $opendkim_key_dir 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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echononl " Set ownership on directory '${opendkim_base_dir}' (recursive).."
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chown -R opendkim:opendkim ${opendkim_base_dir} 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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echononl " Set file-permission on $opendkim_key_dir"
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chmod go-rw $opendkim_key_dir 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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# - Create empty files
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# - ${opendkim_base_dir}/signing.table
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# - ${opendkim_base_dir}/key.table
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# -
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echononl " Create empty file '${opendkim_base_dir}/signing.table'.."
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if [[ -f "${opendkim_base_dir}/signing.table" ]] ; then
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echo_skipped
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else
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touch ${opendkim_base_dir}/signing.table 2> $log_file
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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echononl " Create empty file '${opendkim_base_dir}/key.table'.."
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if [[ -f "${opendkim_base_dir}/key.table" ]] ; then
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echo_skipped
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else
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touch ${opendkim_base_dir}/key.table 2> $log_file
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Create the trusted hosts file ${opendkim_base_dir}/trusted.hosts.
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# -
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echononl " Create trusted hosts file '${opendkim_base_dir}/trusted'.."
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if [[ -f "${opendkim_base_dir}/trusted" ]] ; then
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echo_skipped
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else
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cat <<EOF > ${opendkim_base_dir}/trusted 2> $log_file
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127.0.0.1
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::1
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localhost
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$(hostname -f)
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EOF
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Create the OpenDKIM socket directory in Postfix’s work area
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# - and make sure it has the correct ownership:
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# -
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echononl " Create the OpenDKIM socket directory in Postfix’s work area.."
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if [[ -d "${postfix_spool_dir}/opendkim" ]] ; then
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echo_skipped
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else
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mkdir ${postfix_spool_dir}/opendkim 2> $log_file
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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echononl " Set ownership on directory '${postfix_spool_dir}/opendkim'.."
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chown opendkim:postfix ${postfix_spool_dir}/opendkim 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Edit /etc/default/opendkim
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# -
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# - Set:
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# - SOCKET="local:${postfix_spool_dir}/opendkim/opendkim.sock"
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# -
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echononl " Set 'SOCKET' at file /etc/default/opendkim.."
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if grep -q -E "^\s*SOCKET" /etc/default/opendkim 2>/dev/null ; then
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if grep -q -E "^\s*SOCKET.*local:$opendkim_socket_file" /etc/default/opendkim 2>/dev/null ; then
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echo_skipped
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else
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perl -i -n -p -e "s#^\s*SOCKET=.*#SOCKET=\"local:$opendkim_socket_file\"#" /etc/default/opendkim 2> $log_file
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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else
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cat <<EOF >>/etc/default/opendkim 2> $log_file
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SOCKET=.*$/SOCKET="local:$opendkim_socket_file"
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EOF
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opendkim_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Edit /etc/postfix/main.cf and add a section to activate
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# - processing of e-mail through the OpenDKIM daemon:
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# -
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backup_date="$(date +%Y-%m-%d-%H%M)"
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echononl " Backup existing postfix configuration (main.cf).."
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cp -a /etc/postfix/main.cf /etc/postfix/main.cf.$backup_date 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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echononl " Activate processing of e-mail through the OpenDKIM daemon.."
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if grep -q -E "milter_default_action\s*=\s*accept" /etc/postfix/main.cf ; then
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echo_skipped
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warn "Postfix (main.cf) seems already be configured for milters"
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echononl " Delete previosly saved Postfix configuration.."
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rm /etc/postfix/main.cf.$backup_date 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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else
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cat <<EOF >> /etc/postfix/main.cf 2> $log_file
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# Milter configuration
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# OpenDKIM
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milter_default_action = accept
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# Postfix ≥ 2.6 milter_protocol = 6, Postfix ≤ 2.5 milter_protocol = 2
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milter_protocol = 6
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smtpd_milters = local:/opendkim/opendkim.sock
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non_smtpd_milters = local:/opendkim/opendkim.sock
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EOF
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postfix_needs_restart=true
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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error "$(cat $log_file)"
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fi
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fi
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# - Prevent Postfix from setting the DKIM Header twice (one befor
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# - and one after processing amavis
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# -
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# - To disable milter processing after amavis, add to your master.cf in
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# - the after-amavis section:
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# - 127.0.0.1:10025 inet n - - - - smtpd
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# - [...]
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# - -o smtpd_milters=
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# -
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# - If you want to run the milter after amavis, set in main.cf
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# - smtpd_milters=
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# - to an empty string and add the smtpd_milters configuration to master.cf
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# - (after-section amavis) instead:
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# - -o smtpd_milters=local:/opendkim/opendkim.sock
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# -
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echononl " Backup file '/etc/postfix/master.cf'.."
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cp -a /etc/postfix/master.cf /etc/postfix/master.cf.$backup_date 2> $log_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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||||
else
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||||
echo_failed
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||||
error "$(cat $log_file)"
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||||
fi
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||||
echononl " Adjust /etc/postfix/master.cf to prevent setting DKIM Header twice.."
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||||
_found=false
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||||
_changed=false
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||||
tmp_master_file="/tmp/postfix_master.cf"
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> $tmp_master_file
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while IFS='' read -r _line || [[ -n $_line ]] ; do
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||||
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||||
if $_found && ! echo "$_line" | grep -i -q -E "^\s*-o" 2> /dev/null ; then
|
||||
echo " -o smtpd_milters=" >> "$tmp_master_file"
|
||||
changed=true
|
||||
fi
|
||||
|
||||
if $_found && echo "$_line" | grep -i -q -E "^\s*-o\s+smtpd_milters=\s*" ; then
|
||||
_found=false
|
||||
fi
|
||||
|
||||
if echo "$_line" | grep -i -q -E "^\s*127.0.0.1:10025\s+inet\s+" 2> /dev/null ; then
|
||||
_found=true
|
||||
fi
|
||||
|
||||
echo "$_line" >> "$tmp_master_file"
|
||||
|
||||
done < "/etc/postfix/master.cf"
|
||||
if $_changed ; then
|
||||
cp $tmp_master_file /etc/postfix/master.cf 2> $log_file
|
||||
postfix_needs_restart=true
|
||||
if [[ $? -eq 0 ]] ; then
|
||||
echo_ok
|
||||
else
|
||||
echo_failed
|
||||
error "$(cat $log_file)"
|
||||
fi
|
||||
else
|
||||
echo_skipped
|
||||
warn "Postfix (master.cf) seems already be configured."
|
||||
echononl " Delete previosly saved file '/etc/postfix/master.cf'.."
|
||||
rm /etc/postfix/master.cf.$backup_date 2> $log_file
|
||||
if [[ $? -eq 0 ]] ; then
|
||||
echo_ok
|
||||
else
|
||||
echo_failed
|
||||
error "$(cat $log_file)"
|
||||
fi
|
||||
fi
|
||||
rm -f $tmp_master_file
|
||||
|
||||
echo ""
|
||||
|
||||
# - Restart OpenDKIM
|
||||
# -
|
||||
echononl " Restart OpenDKIM.."
|
||||
if $opendkim_needs_restart ; then
|
||||
if $SYSTEMD_EXISTS ; then
|
||||
systemctl restart opendkim > $log_file 2>&1
|
||||
if [[ $? -eq 0 ]] ; then
|
||||
echo_ok
|
||||
else
|
||||
echo_failed
|
||||
error "$(cat $log_file)"
|
||||
fi
|
||||
else
|
||||
/etc/init.d/opendkim restart > $log_file 2>&1
|
||||
if [[ $? -eq 0 ]] ; then
|
||||
echo_ok
|
||||
else
|
||||
echo_failed
|
||||
error "$(cat $log_file)"
|
||||
fi
|
||||
fi
|
||||
else
|
||||
echo_skipped
|
||||
fi
|
||||
|
||||
|
||||
# - Restart Postfix so it starts using OpenDKIM when processing mail:
|
||||
# -
|
||||
echononl " Restart Postfix.."
|
||||
if $postfix_needs_restart ; then
|
||||
if $SYSTEMD_EXISTS ; then
|
||||
systemctl restart postfix > $log_file 2>&1
|
||||
if [[ $? -eq 0 ]] ; then
|
||||
echo_ok
|
||||
else
|
||||
echo_failed
|
||||
error "$(cat $log_file)"
|
||||
fi
|
||||
else
|
||||
/etc/init.d/postfix restart > $log_file 2>&1
|
||||
if [[ $? -eq 0 ]] ; then
|
||||
echo_ok
|
||||
else
|
||||
echo_failed
|
||||
error "$(cat $log_file)"
|
||||
fi
|
||||
fi
|
||||
else
|
||||
echo_skipped
|
||||
fi
|
||||
|
||||
echo ""
|
||||
rm -f "$log_file"
|
||||
exit 0
|
||||
Reference in New Issue
Block a user