From 6902cc582eef6eb59cd5252208eca5ac608995bd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABl=20Pinson?= <raphink@gmail.com>
Date: Thu, 6 Dec 2012 11:01:19 +0100
Subject: Add validate_cmd function
---
lib/puppet/parser/functions/validate_cmd.rb | 41 +++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 lib/puppet/parser/functions/validate_cmd.rb
(limited to 'lib/puppet/parser')
diff --git a/lib/puppet/parser/functions/validate_cmd.rb b/lib/puppet/parser/functions/validate_cmd.rb
new file mode 100644
index 0000000..e7793c3
--- /dev/null
+++ b/lib/puppet/parser/functions/validate_cmd.rb
@@ -0,0 +1,41 @@
+module Puppet::Parser::Functions
+ newfunction(:validate_cmd, :doc => <<-'ENDHEREDOC') do |args|
+ Perform validation of a string with an external command.
+ The first argument of this function should be a string to
+ test, and the second argument should be a path to a test command
+ taking a file as last argument. If the command, launched against
+ a tempfile containing the passed string, returns a non-null value,
+ compilation will abort with a parse error.
+
+ If a third argument is specified, this will be the error message raised and
+ seen by the user.
+
+ A helpful error message can be returned like this:
+
+ Example:
+
+ validate_cmd($sudoerscontent, '/usr/sbin/visudo -c -f', 'Visudo failed to validate sudoers content')
+
+ ENDHEREDOC
+ if (args.length < 2) or (args.length > 3) then
+ raise Puppet::ParseError, ("validate_cmd(): wrong number of arguments (#{args.length}; must be 2 or 3)")
+ end
+
+ msg = args[2] || "validate_cmd(): failed to validate content with command #{args[1].inspect}"
+
+ content = args[0]
+ checkscript = args[1]
+
+ # Test content in a temporary file
+ tmpfile = Tempfile.new("validate_cmd")
+ tmpfile.write(content)
+ tmpfile.close
+ output = `#{checkscript} #{tmpfile.path} 2>&1 1>/dev/null`
+ r = $?
+ File.delete(tmpfile.path)
+ if output
+ msg += "\nOutput is:\n#{output}"
+ end
+ raise Puppet::ParseError, (msg) unless r == 0
+ end
+end
--
cgit v1.2.3