[#20862] Add functions to validate ipv4 and ipv6 addresses

lib/puppet/parser/functions/validate_ipv4_address.rb

@@ -0,0 +1,48 @@
+module Puppet::Parser::Functions
+
+  newfunction(:validate_ipv4_address, :doc => <<-ENDHEREDOC
+    Validate that all values passed are valid IPv4 addresses.
+    Fail compilation if any value fails this check.
+
+    The following values will pass:
+
+    $my_ip = "1.2.3.4"
+    validate_ipv4_address($my_ip)
+    validate_bool("8.8.8.8", "172.16.0.1", $my_ip)
+
+    The following values will fail, causing compilation to abort:
+
+    $some_array = [ 1, true, false, "garbage string", "3ffe:505:2" ]
+    validate_ipv4_address($some_array)
+
+    ENDHEREDOC
+  ) do |args|
+
+    require "ipaddr"
+    rescuable_exceptions = [ ArgumentError ]
+
+    if defined?(IPAddr::InvalidAddressError)
+      rescuable_exceptions << IPAddr::InvalidAddressError
+    end
+
+    unless args.length > 0 then
+      raise Puppet::ParseError, ("validate_ipv4_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).ipv4?
+          raise Puppet::ParseError, "#{arg.inspect} is not a valid IPv4 address."
+        end
+      rescue *rescuable_exceptions
+        raise Puppet::ParseError, "#{arg.inspect} is not a valid IPv4 address."
+      end
+    end
+
+  end
+
+end

lib/puppet/parser/functions/validate_ipv6_address.rb

@@ -0,0 +1,49 @@
+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|
+
+    require "ipaddr"
+    rescuable_exceptions = [ ArgumentError ]
+
+    if defined?(IPAddr::InvalidAddressError)
+      rescuable_exceptions << IPAddr::InvalidAddressError
+    end
+
+    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 *rescuable_exceptions
+        raise Puppet::ParseError, "#{arg.inspect} is not a valid IPv6 address."
+      end
+    end
+
+  end
+
+end

spec/unit/puppet/parser/functions/validate_ipv4_address_spec.rb

@@ -0,0 +1,64 @@
+#! /usr/bin/env/ruby -S rspec
+
+require "spec_helper"
+
+describe Puppet::Parser::Functions.function(:validate_ipv4_address) do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  describe "when calling validate_ipv4_address from puppet" do
+    describe "when given IPv4 address strings" do
+      it "should compile with one argument" do
+        Puppet[:code] = "validate_ipv4_address('1.2.3.4')"
+        scope.compiler.compile
+      end
+
+      it "should compile with multiple arguments" do
+        Puppet[:code] = "validate_ipv4_address('1.2.3.4', '5.6.7.8')"
+        scope.compiler.compile
+      end
+    end
+
+    describe "when given an IPv6 address" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv4_address('3ffe:505')"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /not a valid IPv4 address/)
+      end
+    end
+
+    describe "when given other strings" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv4_address('hello', 'world')"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /not a valid IPv4 address/)
+      end
+    end
+
+    describe "when given numbers" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv4_address(1, 2)"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /is not a valid IPv4 address/)
+      end
+    end
+
+    describe "when given booleans" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv4_address(true, false)"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /is not a string/)
+      end
+    end
+
+    it "should not compile when no arguments are passed" do
+      Puppet[:code] = "validate_ipv4_address()"
+      expect {
+        scope.compiler.compile
+      }.to raise_error(Puppet::ParseError, /wrong number of arguments/)
+    end
+  end
+end

spec/unit/puppet/parser/functions/validate_ipv6_address_spec.rb

@@ -0,0 +1,67 @@
+#! /usr/bin/env/ruby -S rspec
+
+require "spec_helper"
+
+describe Puppet::Parser::Functions.function(:validate_ipv6_address) do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  describe "when calling validate_ipv6_address from puppet" do
+    describe "when given IPv6 address strings" do
+      it "should compile with one argument" do
+        Puppet[:code] = "validate_ipv6_address('3ffe:0505:0002::')"
+        scope.compiler.compile
+      end
+
+      it "should compile with multiple arguments" do
+        Puppet[:code] = "validate_ipv6_address('3ffe:0505:0002::', '3ffe:0505:0001::')"
+        scope.compiler.compile
+      end
+    end
+
+    describe "when given an ipv4 address" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv6_address('1.2.3.4')"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /not a valid IPv6 address/)
+      end
+    end
+
+    describe "when given other strings" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv6_address('hello', 'world')"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /not a valid IPv6 address/)
+      end
+    end
+
+    # 1.8.7 is EOL'd and also absolutely insane about ipv6
+    unless RUBY_VERSION == '1.8.7'
+      describe "when given numbers" do
+        it "should not compile" do
+          Puppet[:code] = "validate_ipv6_address(1, 2)"
+          expect {
+            scope.compiler.compile
+          }.to raise_error(Puppet::ParseError, /not a valid IPv6 address/)
+        end
+      end
+    end
+
+    describe "when given booleans" do
+      it "should not compile" do
+        Puppet[:code] = "validate_ipv6_address(true, false)"
+        expect {
+          scope.compiler.compile
+        }.to raise_error(Puppet::ParseError, /is not a string/)
+      end
+    end
+
+    it "should not compile when no arguments are passed" do
+      Puppet[:code] = "validate_ipv6_address()"
+      expect {
+        scope.compiler.compile
+      }.to raise_error(Puppet::ParseError, /wrong number of arguments/)
+    end
+  end
+end