From b1c37ed9fe0e2cfac2ac46d757c6037c1c5436c2 Mon Sep 17 00:00:00 2001
From: John Southworth <john.southworth@vyatta.com>
Date: Tue, 16 Aug 2011 18:26:24 -0500
Subject: Create new ping command with the following semantics

    1. ping <ipv4|ipv6|hostname> will use
      * ping for a v4 address
      * ping6 for a v6 address
      * ping or ping6 for a hostname which ever resolves prefering ipv4
    2. ping ipv4 <ipv4|hostname> will ping
    3. ping ipv6 <ipv6|hostname> will ping6
    4. ping <node> option <advanced ping options>
       * allows for options to pass down to ping
       * this is a stop gap while we add the most common options
       * to the CLI
(cherry picked from commit 5145fd68da8f1c7f8289b99f58cb6eb96389fcef)
---
 scripts/vyatta-ping | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 scripts/vyatta-ping

(limited to 'scripts')

diff --git a/scripts/vyatta-ping b/scripts/vyatta-ping
new file mode 100644
index 0000000..d454c19
--- /dev/null
+++ b/scripts/vyatta-ping
@@ -0,0 +1,28 @@
+#!/bin/bash
+ADDR=$1
+# Regular expressions for matching an ipv4 and ipv6 address
+# simple ipv4 matcher
+ip4regex="^(25[0-5]|2[0-4][0-9]|1[0-9]{1,2}|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}$" 
+# based on IPv6 regex from here: http://forums.dartware.com/viewtopic.php?t=452
+ip6regex="^\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:)))(%.+)?\s*$" 
+
+# Main logic
+if [[ "$ADDR" =~ $ip4regex ]]; then
+  /bin/ping ${@:2} $ADDR
+elif [[ "$ADDR" =~ $ip6regex ]]; then
+  /bin/ping6 ${@:2} $ADDR
+else
+  echo "Resolving Address: $ADDR"
+  if host $ADDR | awk {' print $4 '} \
+    | grep -m1 -E "$ip4regex">/dev/null; then
+    # resolve address and check if it is ipv4 or other
+    /bin/ping ${@:2} $ADDR
+  elif host $ADDR | awk {' print $4 '} \
+    | grep -m1 -E "$ip6regex">/dev/null; then
+    # if ipv6 resolution then ping6
+    /bin/ping6 ${@:2} $ADDR
+  else
+    echo -e "\n  Unknown address: [$ADDR]\n"
+  fi
+fi
+
-- 
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