Add server-side logic for EXT API calls

The implementation tries to call specialized backend API functions
as defined in the EXT API header.

Change-Id: I9554dbb114e2627fcde8190279076bf77b2f561e

diff --git a/src/dcm-daemon/dcm_session.cpp b/src/dcm-daemon/dcm_session.cpp
index 4eac7b784205ecf6c041188c8a87cd31e110ef86..cb429a753775515376b45875aa65f68953610460 100644 (file)
--- a/src/dcm-daemon/dcm_session.cpp
+++ b/src/dcm-daemon/dcm_session.cpp
@@ -27,6 +27,7 @@
 
 #include "dcm_session.h"
 #include "dcm_server.h"
+#include "../dcm-client/device_certificate_manager_ext_types.h"
 #include "log.h"
 
 #define DCM_DEFAULT_PRIVILEGE "http://tizen.org/privilege/devicecertificate"
@@ -104,6 +105,9 @@ void dcm_session::decode_message() noexcept
                        case RequestMessage::kSignData:
                                handle_sign_request(requestMessage.sign_data());
                                break;
+                       case RequestMessage::kExtCall:
+                               handle_ext_call_request(requestMessage.ext_call());
+                               break;
                        default:
                                LOGE("Incorrect request message type");
                                // This will terminate connection
@@ -360,4 +364,53 @@ void dcm_session::handle_sign_request(const SignRequest& message)
 
        signingResponse->set_result(error);
        reply(msg);
-}
\ No newline at end of file
+}
+
+void dcm_session::handle_ext_call_request(const ExtCallRequest& message)
+{
+       LOGD("Request EXT API call from backend");
+       ResponseMessage msg;
+       auto* extCallResponse = msg.mutable_ext_call();
+       std::string privilege;
+
+       try {
+               if(fSoResolver->invoke<int, const std::string&, std::string&>(
+                               "dcm_ext_backend_get_api_privilege", message.method_name(), privilege)) {
+                       LOGE("Invalid method name for EXT API call - method name: " << message.method_name());
+                       extCallResponse->set_result(DCM_EXT_ERROR_INVALID_PARAMETER);
+                       reply(msg);
+                       return;
+               }
+       } catch (std::runtime_error&) {
+               LOGE("Couldn't call backend EXT API - backend doesn't support this functionality");
+               extCallResponse->set_result(DCM_EXT_ERROR_NOT_SUPPORTED);
+               reply(msg);
+               return;
+       }
+
+       if(!privilege.empty()) {
+               if(!verify_privileges(fSocket.native_handle(), privilege.c_str())) {
+                       LOGE("Client privilege check failure - access denied for method " << message.method_name()
+                       << " and privilege " << privilege);
+                       extCallResponse->set_result(DCM_EXT_ERROR_PERMISSION_DENIED);
+                       reply(msg);
+                       return;
+               }
+       } else {
+               LOGD("Access to method " << message.method_name()  << "  granted, no privilege check required");
+       }
+
+       try {
+               int error = fSoResolver->invoke<int, const std::string&, const std::string&, std::string&>(
+                               "dcm_ext_backend_call_api", message.method_name(), message.input_data(), *extCallResponse->mutable_output_data());
+
+               if(error) {
+                       LOGE("Error in dcm_ext_backend_call_api for method " << message.method_name() << " , error: " << error);
+               }
+               extCallResponse->set_result(error ? DCM_EXT_ERROR_UNKNOWN : DCM_EXT_ERROR_NONE);
+       } catch (std::runtime_error&) {
+               LOGE("Couldn't call backend EXT API - backend doesn't support this functionality");
+               extCallResponse->set_result(DCM_EXT_ERROR_NOT_SUPPORTED);
+       }
+       reply(msg);
+}

diff --git a/src/dcm-daemon/dcm_session.h b/src/dcm-daemon/dcm_session.h
index faf30a214dbe9ebf6beb0dbf27f8381ff89b4d14..dbb095da1ab90f9d836cf5b5e3ee217d965afc0a 100644 (file)
--- a/src/dcm-daemon/dcm_session.h
+++ b/src/dcm-daemon/dcm_session.h
@@ -60,6 +60,7 @@ private:
        void handle_context_association(const AssociateKeyContext& message);
        void handle_cert_chain(const RequestCertificateChain& message);
        void handle_sign_request(const SignRequest& message);
+       void handle_ext_call_request(const ExtCallRequest& message);
 
 private:
        boost::asio::local::stream_protocol::socket             fSocket;