1 files changed, 43 insertions, 0 deletions
diff --git a/lib/facter/couchdb_pwhash_alg.rb b/lib/facter/couchdb_pwhash_alg.rb
new file mode 100644
index 0000000..42b96b7
--- /dev/null
+++ b/lib/facter/couchdb_pwhash_alg.rb
@@ -0,0 +1,43 @@
+require 'facter'
+
+def version_parts ( version )
+  # gives back a hash containing major, minor and patch numbers
+  # of a give version string
+
+  parts = Hash.new
+  first, *rest = version.split(".")
+  parts["major"] = first
+  parts["minor"] = rest[0]
+  parts["patch"] = rest[1]
+  return parts
+end
+
+def couchdb_pwhash_alg
+  # couchdb uses sha1 as pw hash algorithm until v. 1.2,
+  # but pbkdf2 from v.1.3 on.
+  # see http://docs.couchdb.org/en/1.4.x/configuring.html for
+  # details
+
+  couchdb_version = Facter.value(:couchdb_version)
+  version = version_parts (couchdb_version)
+  major = version["major"].to_i
+  alg = case major
+    when 0 then alg = 'n/a'
+    when 1 then
+      minor = version['minor'].to_i
+      if minor < 3
+        alg = 'sha1'
+      else
+        alg = 'pbkdf2'
+      end
+  else
+    alg = 'pbkdf2'
+  end
+  return alg
+end
+
+Facter.add(:couchdb_pwhash_alg) do
+  setcode do
+    couchdb_pwhash_alg
+  end
+end