1 files changed, 25 insertions, 0 deletions
diff --git a/app/validators/certificate_key_validator.rb b/app/validators/certificate_key_validator.rb
new file mode 100644
index 00000000000..098b16017d2
--- /dev/null
+++ b/app/validators/certificate_key_validator.rb
@@ -0,0 +1,25 @@
+# UrlValidator
+#
+# Custom validator for private keys.
+#
+#   class Project < ActiveRecord::Base
+#     validates :certificate_key, certificate_key: true
+#   end
+#
+class CertificateKeyValidator < ActiveModel::EachValidator
+  def validate_each(record, attribute, value)
+    unless valid_private_key_pem?(value)
+      record.errors.add(attribute, "must be a valid PEM private key")
+    end
+  end
+
+  private
+
+  def valid_private_key_pem?(value)
+    return false unless value
+    pkey = OpenSSL::PKey::RSA.new(value)
+    pkey.private?
+  rescue OpenSSL::PKey::PKeyError
+    false
+  end
+end