From 500021adcf08495453dea3c654905217e04a7875 Mon Sep 17 00:00:00 2001
From: Simon Vieille <simon@deblan.fr>
Date: Mon, 2 Mar 2015 21:39:36 +0100
Subject: [PATCH] init

---
 DEBIAN/conffiles     |   1 +
 DEBIAN/control       |   7 ++
 DEBIAN/postins       |   2 +
 DEBIAN/postrm        |   1 +
 usr/bin/spfgenerator | 156 +++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 167 insertions(+)
 create mode 100644 DEBIAN/conffiles
 create mode 100644 DEBIAN/control
 create mode 100755 DEBIAN/postins
 create mode 100755 DEBIAN/postrm
 create mode 100755 usr/bin/spfgenerator

diff --git a/DEBIAN/conffiles b/DEBIAN/conffiles
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/DEBIAN/conffiles
@@ -0,0 +1 @@
+
diff --git a/DEBIAN/control b/DEBIAN/control
new file mode 100644
index 0000000..7695129
--- /dev/null
+++ b/DEBIAN/control
@@ -0,0 +1,7 @@
+Package: spfgenerator
+Version: 1.1.1
+Section: base
+Priority: optional
+Architecture: all
+Maintainer: Simon Vieille <simon+spfgenerator@deblan.fr>
+Description: SPF Generator
diff --git a/DEBIAN/postins b/DEBIAN/postins
new file mode 100755
index 0000000..13f4793
--- /dev/null
+++ b/DEBIAN/postins
@@ -0,0 +1,2 @@
+#!/bin/sh
+
diff --git a/DEBIAN/postrm b/DEBIAN/postrm
new file mode 100755
index 0000000..1a24852
--- /dev/null
+++ b/DEBIAN/postrm
@@ -0,0 +1 @@
+#!/bin/sh
diff --git a/usr/bin/spfgenerator b/usr/bin/spfgenerator
new file mode 100755
index 0000000..774843f
--- /dev/null
+++ b/usr/bin/spfgenerator
@@ -0,0 +1,156 @@
+#!/bin/sh
+
+showHelp() {
+    cat <<EOF
+NAME
+    spfgenerator generate SPF DNS entry
+
+SYNOPSIS
+    spfgenerator [-h] [-s] [-mx] [-a [domain]] [-i domain] [-p fail|soft|neutral] [-d domain]
+
+DESCRIPTION
+    spfgenerator generates SPF DNS entry
+
+    -h, --help
+        show this help.
+
+    -mx
+        Allow servers listed as MX to send email for the domain.
+
+    -ip <ip>
+        Allow IP to send email for the domain.
+        Can be used several times.
+
+    -i, --include <domain>
+        Any domains that may deliver or relay mail for the domain.
+        Can be used several times.
+
+    -a <domain>
+        Add any other server hostname that may deliver or relay mail for the domain.
+        If domain is empty, it allow current IP address of the domain to send email for the domain.
+        Can be used several times.
+
+    -p, --policy <fail|soft|neutral
+        How strict should be the servers treating the emails
+
+        neutral:
+            Mails will be probably accepted
+            Default value.
+
+        fail:
+            Not compliant will be rejected
+
+        soft:
+            Not compliant will be accepted but marked
+
+    -d,  --domain <domain>
+        Default value: @
+
+    -s, --short
+        Only show the value
+EOF
+}
+
+MX=0
+IPv4s=
+IPv6s=
+INCLUDEs=
+POLICY='?all'
+DOMAIN=@
+SHORT=0
+As=
+
+testData() {
+    if [ -z "$1" ]; then
+        (
+            echo "Invalid parameter ($2)\n"
+            showHelp
+        ) >&2
+        exit 1
+    fi
+}
+
+addIp() {
+    if [ -n "$1" ]; then
+        if [ $(echo "$1" | egrep "^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+") ]; then
+            IPv4s="$IPv4s ip4:$1"
+        else
+            IPv6s="$IPv6s ip6:$1"
+        fi
+    fi
+}
+
+addA() {
+    if [ -z "$1" ]; then
+        As="$As a"
+    else
+        As="$As a:$1"
+    fi
+}
+
+addInclude() {
+    if [ -n "$1" ]; then
+        INCLUDEs="$INCLUDEs include:$1"
+    fi
+}
+
+for i in $@; do
+    case $1 in
+        -h|--help)
+            showHelp
+            exit 0
+            ;;
+        -mx)
+            MX=1
+            shift
+            ;;
+        -s|--short)
+            SHORT=1
+            shift
+            ;;
+        -a)
+            shift
+            addA $1
+            shift
+            ;;
+        -ip)
+            shift
+            addIp $1
+            shift
+            ;;
+        -i|--include)
+            shift
+            addInclude $1
+            shift
+            ;;
+        -p|--policy)
+            shift
+                case $1 in
+                    neutral) POLICY='?all';;
+                    soft) POLICY='~all';;
+                    fail) POLICY='-all';;
+                esac
+            shift
+            ;;
+        -d|--domain)
+            shift
+            DOMAIN=$1
+            shift
+            ;;
+    esac
+done
+
+testData "$DOMAIN" domain
+testData "$IPv4s$IPv6s" ip
+
+(
+    if [ $MX -eq 1 ]; then
+        MX=mx
+    fi
+
+    if [ $SHORT -eq 0 ]; then
+        echo "$DOMAIN	IN	TXT	\"v=spf1 $MX $As $IPv4s $IPv6s $INCLUDEs $POLICY\""
+    else
+        echo "v=spf1 $MX $As $IPv4s $IPv6s $INCLUDEs $POLICY"
+    fi
+) | sed 's/  */ /g'