Adding C++ auth metadata processor.

- We always do the processing asynchronously but maintain a synchronous
  API for the implementor of the processor.
- there are a lot of string copies right now. Having a StringPiece
  object in grpc++ would really help with that (as we would use it for
  C++ metadata).
- Please review the API carefully and if you're happy with it, I'll
  proceed with tests.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/cpp/common/secure_auth_context.cc b/src/cpp/common/secure_auth_context.cc
index 87d7bab75c..dc41083a48 100644
--- a/src/cpp/common/secure_auth_context.cc
+++ b/src/cpp/common/secure_auth_context.cc
@@ -93,4 +93,16 @@ AuthPropertyIterator SecureAuthContext::end() const {
   return AuthPropertyIterator();
 }
 
+void SecureAuthContext::AddProperty(const grpc::string& key,
+                                    const grpc::string& value) {
+  if (!ctx_) return;
+  grpc_auth_context_add_property(ctx_, key.c_str(), value.data(), value.size());
+}
+
+bool SecureAuthContext::SetPeerIdentityPropertyName(const grpc::string& name) {
+  if (!ctx_) return false;
+  return grpc_auth_context_set_peer_identity_property_name(ctx_,
+                                                           name.c_str()) != 0;
+}
+
 }  // namespace grpc