Add functions to validate ipv4 and ipv6 addresses

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/validate_ipv6_address.rb b/lib/puppet/parser/functions/validate_ipv6_address.rb
new file mode 100644
index 0000000..d270b4d
--- /dev/null
+++ b/lib/puppet/parser/functions/validate_ipv6_address.rb
@@ -0,0 +1,42 @@
+module Puppet::Parser::Functions
+
+  newfunction(:validate_ipv6_address, :doc => <<-ENDHEREDOC
+    Validate that all values passed are valid IPv6 addresses.
+    Fail compilation if any value fails this check.
+
+    The following values will pass:
+
+    $my_ip = "3ffe:505:2"
+    validate_ipv6_address(1)
+    validate_ipv6_address($my_ip)
+    validate_bool("fe80::baf6:b1ff:fe19:7507", $my_ip)
+
+    The following values will fail, causing compilation to abort:
+
+    $some_array = [ true, false, "garbage string", "1.2.3.4" ]
+    validate_ipv6_address($some_array)
+
+    ENDHEREDOC
+  ) do |args|
+
+    unless args.length > 0 then
+      raise Puppet::ParseError, ("validate_ipv6_address(): wrong number of arguments (#{args.length}; must be > 0)")
+    end
+
+    args.each do |arg|
+      unless arg.is_a?(String)
+        raise Puppet::ParseError, "#{arg.inspect} is not a string."
+      end
+
+      begin
+        unless IPAddr.new(arg).ipv6?
+          raise Puppet::ParseError, "#{arg.inspect} is not a valid IPv6 address."
+        end
+      rescue ArgumentError
+        raise Puppet::ParseError, "#{arg.inspect} is not a valid IPv6 address."
+      end
+    end
+
+  end
+
+end