Initial checkin of gRPC to third_party/

third_party/grpc/src/cpp/server/secure_server_credentials.cc

+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <functional>
+#include <map>
+#include <memory>
+
+#include "src/cpp/common/secure_auth_context.h"
+#include "src/cpp/server/secure_server_credentials.h"
+
+#include <grpc++/security/auth_metadata_processor.h>
+
+namespace grpc {
+
+void AuthMetadataProcessorAyncWrapper::Destroy(void* wrapper) {
+  auto* w = reinterpret_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
+  delete w;
+}
+
+void AuthMetadataProcessorAyncWrapper::Process(
+    void* wrapper, grpc_auth_context* context, const grpc_metadata* md,
+    size_t num_md, grpc_process_auth_metadata_done_cb cb, void* user_data) {
+  auto* w = reinterpret_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
+  if (!w->processor_) {
+    // Early exit.
+    cb(user_data, nullptr, 0, nullptr, 0, GRPC_STATUS_OK, nullptr);
+    return;
+  }
+  if (w->processor_->IsBlocking()) {
+    w->thread_pool_->Add(
+        std::bind(&AuthMetadataProcessorAyncWrapper::InvokeProcessor, w,
+                  context, md, num_md, cb, user_data));
+  } else {
+    // invoke directly.
+    w->InvokeProcessor(context, md, num_md, cb, user_data);
+  }
+}
+
+void AuthMetadataProcessorAyncWrapper::InvokeProcessor(
+    grpc_auth_context* ctx, const grpc_metadata* md, size_t num_md,
+    grpc_process_auth_metadata_done_cb cb, void* user_data) {
+  AuthMetadataProcessor::InputMetadata metadata;
+  for (size_t i = 0; i < num_md; i++) {
+    metadata.insert(std::make_pair(
+        md[i].key, grpc::string_ref(md[i].value, md[i].value_length)));
+  }
+  SecureAuthContext context(ctx, false);
+  AuthMetadataProcessor::OutputMetadata consumed_metadata;
+  AuthMetadataProcessor::OutputMetadata response_metadata;
+
+  Status status = processor_->Process(metadata, &context, &consumed_metadata,
+                                      &response_metadata);
+
+  std::vector<grpc_metadata> consumed_md;
+  for (auto it = consumed_metadata.begin(); it != consumed_metadata.end();
+       ++it) {
+    grpc_metadata md_entry;
+    md_entry.key = it->first.c_str();
+    md_entry.value = it->second.data();
+    md_entry.value_length = it->second.size();
+    md_entry.flags = 0;
+    consumed_md.push_back(md_entry);
+  }
+  std::vector<grpc_metadata> response_md;
+  for (auto it = response_metadata.begin(); it != response_metadata.end();
+       ++it) {
+    grpc_metadata md_entry;
+    md_entry.key = it->first.c_str();
+    md_entry.value = it->second.data();
+    md_entry.value_length = it->second.size();
+    md_entry.flags = 0;
+    response_md.push_back(md_entry);
+  }
+  auto consumed_md_data = consumed_md.empty() ? nullptr : &consumed_md[0];
+  auto response_md_data = response_md.empty() ? nullptr : &response_md[0];
+  cb(user_data, consumed_md_data, consumed_md.size(), response_md_data,
+     response_md.size(), static_cast<grpc_status_code>(status.error_code()),
+     status.error_message().c_str());
+}
+
+int SecureServerCredentials::AddPortToServer(const grpc::string& addr,
+                                             grpc_server* server) {
+  return grpc_server_add_secure_http2_port(server, addr.c_str(), creds_);
+}
+
+void SecureServerCredentials::SetAuthMetadataProcessor(
+    const std::shared_ptr<AuthMetadataProcessor>& processor) {
+  auto* wrapper = new AuthMetadataProcessorAyncWrapper(processor);
+  grpc_server_credentials_set_auth_metadata_processor(
+      creds_, {AuthMetadataProcessorAyncWrapper::Process,
+               AuthMetadataProcessorAyncWrapper::Destroy, wrapper});
+}
+
+std::shared_ptr<ServerCredentials> SslServerCredentials(
+    const SslServerCredentialsOptions& options) {
+  std::vector<grpc_ssl_pem_key_cert_pair> pem_key_cert_pairs;
+  for (auto key_cert_pair = options.pem_key_cert_pairs.begin();
+       key_cert_pair != options.pem_key_cert_pairs.end(); key_cert_pair++) {
+    grpc_ssl_pem_key_cert_pair p = {key_cert_pair->private_key.c_str(),
+                                    key_cert_pair->cert_chain.c_str()};
+    pem_key_cert_pairs.push_back(p);
+  }
+  grpc_server_credentials* c_creds = grpc_ssl_server_credentials_create(
+      options.pem_root_certs.empty() ? nullptr : options.pem_root_certs.c_str(),
+      pem_key_cert_pairs.empty() ? nullptr : &pem_key_cert_pairs[0],
+      pem_key_cert_pairs.size(), options.force_client_auth, nullptr);
+  return std::shared_ptr<ServerCredentials>(
+      new SecureServerCredentials(c_creds));
+}
+
+}  // namespace grpc