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refactoring dns_update: use global vars stored in /etc/mailinabox.conf

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This commit is contained in:
Joshua Tauberer 2013-09-08 11:47:27 +00:00
parent 548cc8a0f6
commit 9cd5fc34a9
3 changed files with 10 additions and 31 deletions
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19
scripts/dns.sh
View File

@ -11,30 +11,11 @@
apt-get -qq -y install nsd3
# Get configuraton information.
if [ -z "$PUBLIC_HOSTNAME" ]; then
PUBLIC_HOSTNAME=example.org
fi
if [ -z "$PUBLIC_IP" ]; then
# works on EC2 only...
PUBLIC_IP=`wget -q -O- http://instance-data/latest/meta-data/public-ipv4`
fi
# Prepare nsd3's configuration.
sudo mkdir -p /var/run/nsd3
mkdir -p "$STORAGE_ROOT/dns";
# Store our desired IP address (to put in the zone files) for later.
# Also store our primary hostname, which we'll use for all DKIM signatures
# in case the user is only delegating MX and we aren't setting DKIM on
# the main DNS.
echo $PUBLIC_IP > $STORAGE_ROOT/dns/our_ip
echo $PUBLIC_HOSTNAME > $STORAGE_ROOT/dns/primary_hostname
# Create the default zone if it doesn't exist.
if [ ! -f "$STORAGE_ROOT/dns/$PUBLIC_HOSTNAME.txt" ]; then

21
scripts/dns_update.sh
View File

@ -8,10 +8,7 @@
# This script is safe to run on its own.
# Load $STORAGE_ROOT, $PUBLIC_IP, and $PRIMARY_HOSTNAME.
source /etc/mailinabox.conf
PUBLIC_IP=`cat $STORAGE_ROOT/dns/our_ip`
PRIMARY_HOSTNAME=`cat $STORAGE_ROOT/dns/primary_hostname`
source /etc/mailinabox.conf # load global vars
# Ensure a zone file exists for every domain name in use by a mail user.
for mail_user in `tools/mail.py user`; do
@ -69,7 +66,7 @@ for fn in $STORAGE_ROOT/dns/*.txt; do
\$ORIGIN $zone. ; default zone domain
\$TTL 86400 ; default time to live
@ IN SOA ns1.$PRIMARY_HOSTNAME. hostmaster.$PRIMARY_HOSTNAME. (
@ IN SOA ns1.$PUBLIC_HOSTNAME. hostmaster.$PUBLIC_HOSTNAME. (
$serial ; serial number
28800 ; Refresh
7200 ; Retry
@ -77,18 +74,18 @@ for fn in $STORAGE_ROOT/dns/*.txt; do
86400 ; Min TTL
)
NS ns1.$PRIMARY_HOSTNAME.
NS ns2.$PRIMARY_HOSTNAME.
NS ns1.$PUBLIC_HOSTNAME.
NS ns2.$PUBLIC_HOSTNAME.
IN A $PUBLIC_IP
MX 10 $PRIMARY_HOSTNAME.
MX 10 $PUBLIC_HOSTNAME.
300 TXT "v=spf1 mx -all"
www IN A $PUBLIC_IP
EOF
# In PRIMARY_HOSTNAME, also define ns1 and ns2.
if [ "$zone" = $PRIMARY_HOSTNAME ]; then
# In PUBLIC_HOSTNAME, also define ns1 and ns2.
if [ "$zone" = $PUBLIC_HOSTNAME ]; then
cat >> /etc/nsd3/zones/$fn2 << EOF;
ns1 IN A $PUBLIC_IP
ns2 IN A $PUBLIC_IP
@ -112,12 +109,12 @@ EOF
# the selector, and the path to the private key.
#
# Just in case we don't actually host the DNS for all domains of our mail users,
# we assume that DKIM is at least configured in the DNS of $PRIMARY_HOSTNAME and
# we assume that DKIM is at least configured in the DNS of $PUBLIC_HOSTNAME and
# we use that host for all DKIM signatures.
#
# In SigningTable, we map every email address to a key record called $zone.
# Then we specify for the key record named $zone its domain, selector, and key.
echo "$zone $PRIMARY_HOSTNAME:mail:$STORAGE_ROOT/mail/dkim/mail.private" >> /etc/opendkim/KeyTable
echo "$zone $PUBLIC_HOSTNAME:mail:$STORAGE_ROOT/mail/dkim/mail.private" >> /etc/opendkim/KeyTable
echo "*@$zone $zone" >> /etc/opendkim/SigningTable
done

1
scripts/start.sh
View File

@ -50,6 +50,7 @@ fi
cat > /etc/mailinabox.conf << EOF;
STORAGE_ROOT=$STORAGE_ROOT
PUBLIC_HOSTNAME=$PUBLIC_HOSTNAME
PUBLIC_IP=$PUBLIC_IP
EOF
# Start service configuration.