X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=setup_opendkim.sh;h=ce1e3d5a4790871297064ddcb1a470c4bc4f6d5f;hb=762054bca32482e64b896873fd5544a1247dd2cc;hp=a8b5402176c676169cc1db875c04494ef9d8d7a8;hpb=ec7cf5e045fbdc6f415a47851e15caf593dcaa46;p=config

diff --git a/setup_opendkim.sh b/setup_opendkim.sh
index a8b5402..ce1e3d5 100755
--- a/setup_opendkim.sh
+++ b/setup_opendkim.sh
@@ -1,29 +1,49 @@
 #!/bin/sh
-set -x
 set -e
 selector=$1
 file=$2
 
+if [ ! -n "$selector" ]; then
+    cat << EOF
+Usage: $0 SELECTOR [KEYFILE] - set up DKIM system and configuration
+
+If existing KEYFILE is given, set up DKIM to use SELECTOR and apply key from
+KEYFILE.
+
+If existing KEYFILE is not given, generate KEYFILE and DNS TXT file for
+SELECTOR.
+EOF
+    exit
+fi
+
 if [ ! "$(id -u)" -eq "0" ]; then
     echo "Must be run as root."
-    exit
+    exit 1
 fi
 
+set -x
 apt-get -y install opendkim
 
-if [ -n $file ] || [ ! -f $file ]; then
+if [ ! -n "$file" ]; then
     apt-get -y install opendkim-tools
     opendkim-genkey -d plomlompom.com -s $selector
-    apt-get --purge autoremove opendkim-tools
+    apt-get -y --purge autoremove opendkim-tools
     set +x
     echo
     echo 'Generated key file at '$selector'.private.'
-    echo 'APPLY the content of '$selector'.txt below to your DNS record.'
+    echo 'Also generated '$selector'.txt, APPLY its content below to your DNS' \
+         'record.'
     echo 'AFTER the waiting time for DNS propagation RERUN this script with' \
           'the key file as SECOND parameter (still use selector as first one).'
     echo
     cat $selector.txt
 else
+    if [ ! -f "$file" ]; then
+        set +x
+        echo
+        echo "Keyfile $file does not exist."
+        exit 1
+    fi
     cp ~/config/systemfiles/opendkim.conf /etc/opendkim.conf
     sed -r -i 's/^#Selector .*$/Selector '$selector'/' /etc/opendkim.conf
     mkdir -p /etc/opendkim