1 files changed, 24 insertions, 0 deletions
diff --git a/app/validators/certificate_validator.rb b/app/validators/certificate_validator.rb
new file mode 100644
index 00000000000..e3d18097f71
--- /dev/null
+++ b/app/validators/certificate_validator.rb
@@ -0,0 +1,24 @@
+# UrlValidator
+#
+# Custom validator for private keys.
+#
+#   class Project < ActiveRecord::Base
+#     validates :certificate_key, certificate: true
+#   end
+#
+class CertificateValidator < ActiveModel::EachValidator
+  def validate_each(record, attribute, value)
+    unless valid_certificate_pem?(value)
+      record.errors.add(attribute, "must be a valid PEM certificate")
+    end
+  end
+
+  private
+
+  def valid_certificate_pem?(value)
+    return false unless value
+    OpenSSL::X509::Certificate.new(value).present?
+  rescue OpenSSL::X509::CertificateError
+    false
+  end
+end