install_postfix_advanced.sh: add support for DMARC reporting.

install_postfix_advanced.sh

@@ -131,6 +131,8 @@ DEFAULT_SASL_AUTH_ENABLED=no
 
 DEFAULT_LISTEN_ON_ADDITIONAL_RELAY_PORT=false
 
+DEFAULT_INSTALL_DMARC_REPORT_SUPPORT=false
+
 
 # - Is this a systemd system?
 # -
@@ -174,6 +176,11 @@ if [[ -z "$_LISTEN_ON_ADDITIONAL_RELAY_PORT" ]] ; then
    _LISTEN_ON_ADDITIONAL_RELAY_PORT=${DEFAULT_LISTEN_ON_ADDITIONAL_RELAY_PORT}
 fi
 
+if [[ -z "$_INSTALL_DMARC_REPORT_SUPPORT" ]] ; then
+   _INSTALL_DMARC_REPORT_SUPPORT=${DEFAULT_INSTALL_DMARC_REPORT_SUPPORT}
+fi
+
+
 echo ""
 echo ""
 echo ""
@@ -443,6 +450,24 @@ else
 fi
 
 
+if ! ${IS_RELAY_HOST} ; then
+   INSTALL_DMARC_REPORT_SUPPORT=false
+   echo ""
+   echo -e "\033[32m--\033[m"
+   echo ""
+   echo "Should this mail server support DMARC reporting?"
+   echo ""
+   echononl "Support DMARC reporting ? [ ${_INSTALL_DMARC_REPORT_SUPPORT} ]: "
+   read INPUT
+   if [[ "X${INPUT}" == "X" ]]; then
+      INPUT=$_INSTALL_DMARC_REPORT_SUPPORT
+   fi
+   if [[ "${INPUT,,}" == "yes" || "${INPUT,,}" == "true" ]]; then
+      INSTALL_DMARC_REPORT_SUPPORT=true
+   fi 
+fi
+
+
 ADMIN_EMAIL=
 echo ""
 echo ""
@@ -459,10 +484,10 @@ if [[ -n "$_ADMIN_EMAIL" ]]; then
    fi
 else
    while [[ "X${ADMIN_EMAIL}" = "X" ]]; do
-   echononl "Admin e-mail address: "
-   read ADMIN_EMAIL
-   if [[ "X${ADMIN_EMAIL}" = "X" ]]; then
-       echo -e "\n\t\033[33m\033[1mAdmin e-mail address is reqired\033[m\n"
+      echononl "Admin e-mail address: "
+      read ADMIN_EMAIL
+      if [[ "X${ADMIN_EMAIL}" = "X" ]]; then
+         echo -e "\n\t\033[33m\033[1mAdmin e-mail address is reqired\033[m\n"
       fi
    done
 fi
@@ -492,6 +517,8 @@ if $IS_RELAY_HOST ; then
 else
    echo -e "\tConfigure as relay host?..........: $IS_RELAY_HOST"
    echo -e "\tConfigure as complete mailserver..: \033[33m\033[1mtrue\033[m"
+   echo ""
+   echo -e "\tSupport DMARC reporting...........: \033[33m\033[1m${INSTALL_DMARC_REPORT_SUPPORT}\033[m"
 fi
 echo ""
 echononl "einverstanden (yes/no): "
@@ -535,6 +562,10 @@ EOF
 _ADDITIONAL_RELAY_LISTEN_PORT=${ADDITIONAL_RELAY_LISTEN_PORT}
 EOF
    fi
+else
+   cat << EOF >> $conf_file
+_INSTALL_DMARC_REPORT_SUPPORT=${INSTALL_DMARC_REPORT_SUPPORT}
+EOF
 fi
 if [[ $? -ne 0 ]]; then
    _failed=true
@@ -547,6 +578,9 @@ fi
 
 [[ "$IPV6" = "disabled" ]] && IPV6=""
 
+exit
+clean_up 1
+
 
 # - Synchronise package index files with the repository
 # -
@@ -592,6 +626,9 @@ _needed_packages="postfix postfix-pgsql postfix-mysql postfix-pcre libsasl2-modu
 if [[ "$SASL_AUTH_ENABLED" = "yes" ]]; then
    _needed_packages="$_needed_packages sasl2-bin"
 fi
+if ${INSTALL_DMARC_REPORT_SUPPORT} ; then
+   _needed_packages="$_needed_packages ripmime xmlstarlet unzip gzip"
+fi
 for _pkg in $_needed_packages ; do
    if `dpkg -l | grep $_pkg | grep -e "^i" > /dev/null 2>&1` ; then
       continue
@@ -3411,6 +3448,7 @@ else
 fi
 
 
+
 echononl "   Create file \"relay_domains\""
 if [[ ! -f /etc/postfix/relay_domains ]] ; then
    touch /etc/postfix/relay_domains
@@ -3752,6 +3790,133 @@ EOF
 fi
 
 
+if ${INSTALL_DMARC_REPORT_SUPPORT} ; then
+   # ----
+   # - Add support for DMARC report
+   # ----
+
+   # -   /var/lib/dmarc/
+   # -   ├── reports/                 # Eingegangene XML-, GZ-, ZIP-Dateien
+   # -   │   └── YYYY/MM/DD/          # Datumsbasierte Ablage
+   # -   ├── processed/               # Originalmails (Archiv)
+   # -   ├── exports/                 # CSV- und Top-Auswertungen
+   # -   └── logs/                    # Logdateien
+   echononl "Add directory Structure for collecting and analysing DMARC reports.."
+   install -d -o root -g root -m 750 /var/lib/dmarc/{reports,processed,exports,logs} > /dev/null 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   echononl "Add 'dmarc-pipe' entry to $postfix_master_cf .."
+   cat <<EOF >> /etc/postfix/transport 2> $log_file
+
+# - Take care your master.cf file ($postfix_master_cf) contains:
+# - 
+# -    dmarc-pipe  unix  -  n  n  -  -  pipe
+# -      flags=Rq user=vmail argv=/usr/local/bin/dmarc-collect.sh
+# - 
+dmarc-reports@oopen.de   dmarc-pipe:
+
+EOF
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   echononl "Create Postfix lookup table '/etc/postfix/transport'.."
+   postmap btree:/etc/postfix/transport > /dev/null 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   echononl "Create script '/usr/local/bin/dmarc-collect.sh'.."
+   tee /usr/local/bin/dmarc-collect.sh > /dev/null 2> $log_file <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+INBOX="$BASE/reports"
+PROC="$BASE/processed"
+LOGF="$BASE/logs/collector.log"
+
+umask 027
+
+TMPDIR="$(mktemp -d)"
+EML="$TMPDIR/mail.eml"
+cat > "$EML"
+
+ripmime --no-nameless --name-by-type --overwrite -i "$EML" -d "$TMPDIR" >>"$LOGF" 2>&1 || true
+
+TODAY="$(date -u +%Y/%m/%d)"
+OUTDIR="$INBOX/$TODAY"
+mkdir -p "$OUTDIR"
+
+moved=0
+shopt -s nullglob
+for f in "$TMPDIR"/*; do
+  case "$f" in
+    *.xml|*.XML|*.gz|*.zip)
+      sha="$(sha256sum "$f" | awk '{print $1}')"
+      base="$(basename "$f")"
+      dst="$OUTDIR/$(date -u +%Y%m%dT%H%M%SZ)_${sha:0:12}_$base"
+      mv "$f" "$dst"
+      echo "$(date -Is) stored $dst" >> "$LOGF"
+      moved=$((moved+1))
+      ;;
+    *) : ;;
+  esac
+done
+
+mkdir -p "$PROC"
+mv "$EML" "$PROC/$(date -u +%Y%m%dT%H%M%SZ)_mail.eml" || true
+rm -rf "$TMPDIR"
+
+if (( moved > 0 )); then
+  exit 0
+else
+  echo "$(date -Is) no usable attachment in message" >> "$LOGF"
+  exit 0
+fi
+
+EOF
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   _failed=false
+   echononl "Set permissions for '/usr/local/bin/dmarc-collect.sh'.."
+   chown vmail:vmail /usr/local/bin/dmarc-collect.sh > /dev/null 2> $log_file
+   if [[ $? -ne 0 ]] ; then
+      _failed=true
+   fi
+
+   chmod 750 /usr/local/bin/dmarc-collect.sh  > /dev/null 2>> $log_file
+   if [[ $? -ne 0 ]] ; then
+      _failed=true
+   fi
+
+ 
+  if ${_failed} ; then
+      echo_failed
+      error "$(cat $log_file)"
+   else
+      echo_ok
+   fi
+
+fi
+
+
 ## - /etc/postfix/master.cf
 ## -
 ## - Create Listener for user authenticated smtp connection port 587 (submission)
@@ -3784,6 +3949,12 @@ else
 	policyd_spf_present=false
 fi
 
+if grep -iq -E "^dmarc-pipe\s+" $postfix_master_cf > /dev/null 2>&1 ; then
+   dmarc_pipe_present=true
+else
+   dmarc_pipe_present=false
+fi
+
 _found=false
 echononl "   Create new file \"${postfix_master_cf}\""
 if [[ -f "${postfix_master_cf}.$backup_date" ]]; then
@@ -3894,6 +4065,18 @@ smtp-ipv6-only      unix  -       -       n       -       -       smtp
 EOF
    fi
 
+   # - Add support for DMARC reporting
+   # -
+   if ${INSTALL_DMARC_REPORT_SUPPORT} ; then
+      if ! $(grep -iq -E "^dmarc-pipe\s+" "$postfix_master_cf" 2> /dev/null) ; then
+         cat <<EOF >> $postfix_master_cf
+
+dmarc-pipe  unix  -  n  n  -  -  pipe
+  flags=Rq user=vmail argv=/usr/local/bin/dmarc-collect.sh
+EOF
+      fi
+   fi
+
 	echo_done
 	warn "Please check file \"$postfix_master_cf\" !"
 else