Add missing docs

README.md

@@ -461,15 +461,16 @@ archive { '/tmp/staging/master.zip':
 * `ensure`: whether archive file should be present/absent (default: present)
 * `path`: namevar, archive file fully qualified file path.
 * `filename`: archive file name (derived from path).
-* `source`: archive file source, supports http|https|ftp|file|s3|gs uri.
+* `source`: archive file source, supports puppet|http|https|ftp|file|s3|gs uri.
 * `username`: username to download source file.
 * `password`: password to download source file.
 * `allow_insecure`: Ignore HTTPS certificate errors (true|false). (default: false)
 * `cookie`: archive file download cookie.
 * `checksum_type`: archive file checksum type (none|md5|sha1|sha2|sha256|sha384|
   sha512). (default: none)
 * `checksum`: archive file checksum (match checksum_type)
-* `checksum_url`: archive file checksum source (instead of specify checksum)
+* `checksum_url`: archive file checksum source (instead of specify checksum).
+  Supports `file`, `http`, and `https` but not `puppet` urls.
 * `checksum_verify`: whether checksum will be verified (true|false). (default: true)
 * `extract`: whether archive will be extracted after download (true|false).
   (default: false)

REFERENCE.md

@@ -991,7 +991,7 @@ Default value: `none`
 
 ##### <a name="checksum_url"></a>`checksum_url`
 
-archive file checksum source (instead of specifying checksum)
+archive file checksum source (instead of specifying checksum). Supports http|https|ftp|file
 
 ##### <a name="checksum_verify"></a>`checksum_verify`
 

lib/puppet/type/archive.rb

@@ -174,7 +174,12 @@ def should_to_s(value)
   end
 
   newparam(:checksum_url) do
-    desc 'archive file checksum source (instead of specifying checksum)'
+    desc 'archive file checksum source (instead of specifying checksum). Supports http|https|ftp|file'
+    validate do |value|
+      unless value =~ URI.regexp(%w[http https ftp file])
+        raise ArgumentError, "invalid source url: #{value}"
+      end
+    end
   end
   newparam(:digest_url) do
     desc 'archive file checksum source (instead of specifying checksum)