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--- wan_ip_retrieval_and_dynamic_dns_mdns [2021/03/22 06:51] – created hc9
+++ wan_ip_retrieval_and_dynamic_dns_mdns [2021/03/22 06:58] (current) – hc9
@@ Line 3: / Line 3: @@
 There are myriad ways to automatically keep your **mdns** updated on SDF. Below are a couple:
-The first script depends on passwordless SSH logons. Also, make sure the file permissions for your scripts are executable. For more info, see the SDF tutorial on [[http://sdf.org/index.cgi?tutorials/permissions|File Permissions]].
+The first script depends on passwordless SSH logons. Also, make sure the file permissions for your scripts are executable. For more info, see the SDF tutorial on [[permissions|File Permissions]].
 === Script 1 ===
@@ Line 10: / Line 10: @@
 <code>
-  echo $SSH_CLIENT
+echo $SSH_CLIENT
 </code>
 <code>
-  echo $SSH_CONNECTION
+echo $SSH_CONNECTION
 </code>
@@ Line 22: / Line 22: @@
 <code>
-  #!/bin/sh
+#!/bin/sh
-  IP=$(echo $SSH_CLIENT | awk '{print $1}')
+IP=$(echo $SSH_CLIENT | awk '{print $1}')
-  OLDIP=$(cat ~/bin/.ip)
+OLDIP=$(cat ~/bin/.ip)
-  if [ "$IP" != "$OLDIP" ] ;
+if [ "$IP" != "$OLDIP" ] ;
-  then
+then
-          echo "$IP" > ~/bin/.ip
+        echo "$IP" > ~/bin/.ip
-          mdns "$IP"
+        mdns "$IP"
-  fi
+fi
 </code>
@@ Line 37: / Line 37: @@
 <code>
-  #!/bin/ksh
+#!/bin/ksh
-  ssh me@remote.host '~/bin/ip' >/dev/null
+ssh me@remote.host '~/bin/ip' >/dev/null
 </code>
@@ Line 44: / Line 44: @@
 <code>
-  #!/bin/ksh
+#!/bin/ksh
-  ssh me@remote.host '~/bin/ip' >>$HOME/logs/ip_update
+ssh me@remote.host '~/bin/ip' >>$HOME/logs/ip_update
 </code>
@@ Line 51: / Line 51: @@
 <code>
-  * */24 * * * $HOME/bin/ipset
+* */24 * * * $HOME/bin/ipset
 </code>
@@ Line 59: / Line 59: @@
 <code>
-  IP=$(ssh me@remote.host 'echo $SSH_CLIENT' | awk '{print $1}')
+IP=$(ssh me@remote.host 'echo $SSH_CLIENT' | awk '{print $1}')
-  echo $IP
+echo $IP
 </code>
@@ Line 84: / Line 84: @@
 <code>
-  #!/bin/sh
+#!/bin/sh
-  # GPL 2007,2009 Yargo C Bonetti
+# GPL 2007,2009 Yargo C Bonetti
-  # Use however you like, at your own risk!
+# Use however you like, at your own risk!
-  OLDIP=./.oldip
+OLDIP=./.oldip
-  DNSCOM=mdns
+DNSCOM=mdns
-  LOGF=./.setmdns.log
+LOGF=./.setmdns.log
-  KEYWORD=setmdns
+KEYWORD=setmdns
-  LOGNAME=${LOGNAME:-${HTTP_HOST%%.*}}
+LOGNAME=${LOGNAME:-${HTTP_HOST%%.*}}
-  HOME=`finger $LOGNAME|awk '/^Directory:/{print $2}'`
+HOME=`finger $LOGNAME|awk '/^Directory:/{print $2}'`
-  export LOGNAME HOME
+export LOGNAME HOME
-  echo "`date -u +%c`     $REMOTE_ADDR    $QUERY_STRING" >>$LOGF
+echo "`date -u +%c`     $REMOTE_ADDR    $QUERY_STRING" >>$LOGF
-  chmod 600 $LOGF
+chmod 600 $LOGF
-  cat <&1 >/dev/null ; then
+cat <&1 >/dev/null ; then
-   if [ -d "$HOME" ] ; then
+ if [ -d "$HOME" ] ; then
-    if [ "$REMOTE_ADDR" = "`cat $OLDIP`" ] ; then
+  if [ "$REMOTE_ADDR" = "`cat $OLDIP`" ] ; then
-     echo "Keeping ip at $REMOTE_ADDR"
+   echo "Keeping ip at $REMOTE_ADDR"
-    else
-     $DNSCOM $REMOTE_ADDR
-     echo $REMOTE_ADDR >$OLDIP
-    fi
-   else echo "no $DNSCOM due to bad HOME=$HOME"
-   fi
   else
-   echo $QUERY_STRING
+   $DNSCOM $REMOTE_ADDR
+   echo $REMOTE_ADDR >$OLDIP
   fi
+ else echo "no $DNSCOM due to bad HOME=$HOME"
+ fi
+else
+ echo $QUERY_STRING
+fi
 </code>
 $Id: mdns-tutorial.html,v 1.19 2019/09/29 15:35:43 amrowsell Exp $ [[http://sdf.org/?tutorials/mdns-tutorial|WAN IP Retrieval and Dynamic DNS (mdns)]] - traditional link (using [[wp>Revision_Control_System|RCS]])