From c906a1c0f454295ddb4006a6e55123f748d2fce7 Mon Sep 17 00:00:00 2001
From: Guilherme Lawless <guilherme@nano.org>
Date: Sat, 24 Aug 2019 10:26:02 +0100
Subject: [PATCH] No required options in TOML parsing (#2245)

---
 nano/core_test/toml.cpp       | 51 +++++++++++++++++++++++++++++++++++
 nano/lib/rpcconfig.cpp        | 14 +++++-----
 nano/node/websocketconfig.cpp |  2 +-
 3 files changed, 59 insertions(+), 8 deletions(-)

diff --git a/nano/core_test/toml.cpp b/nano/core_test/toml.cpp
index 6645895a2..0de22167b 100644
--- a/nano/core_test/toml.cpp
+++ b/nano/core_test/toml.cpp
@@ -447,6 +447,36 @@ TEST (toml, daemon_config_deserialize_no_defaults)
 	ASSERT_NE (conf.node.stat_config.log_samples_filename, defaults.node.stat_config.log_samples_filename);
 }
 
+/** There should be no required values **/
+TEST (toml, daemon_config_no_required)
+{
+	std::stringstream ss;
+
+	// A config with no values, only categories
+	ss << R"toml(
+	[node]
+	[node.diagnostics.txn_tracking]
+	[node.httpcallback]
+	[node.ipc.local]
+	[node.ipc.tcp]
+	[node.logging]
+	[node.statistics.log]
+	[node.statistics.sampling]
+	[node.websocket]
+	[opencl]
+	[rpc]
+	[rpc.child_process]
+	)toml";
+
+	nano::tomlconfig toml;
+	toml.read (ss);
+	nano::daemon_config conf;
+	nano::daemon_config defaults;
+	conf.deserialize_toml (toml);
+
+	ASSERT_FALSE (toml.get_error ()) << toml.get_error ().get_message ();
+}
+
 /** Deserialize an rpc config with non-default values */
 TEST (toml, rpc_config_deserialize_no_defaults)
 {
@@ -485,3 +515,24 @@ TEST (toml, rpc_config_deserialize_no_defaults)
 	ASSERT_NE (conf.rpc_process.ipc_port, defaults.rpc_process.ipc_port);
 	ASSERT_NE (conf.rpc_process.num_ipc_connections, defaults.rpc_process.num_ipc_connections);
 }
+
+/** There should be no required values **/
+TEST (toml, rpc_config_no_required)
+{
+	std::stringstream ss;
+
+	// A config with no values, only categories
+	ss << R"toml(
+	[version]
+	[process]
+	[secure]
+	)toml";
+
+	nano::tomlconfig toml;
+	toml.read (ss);
+	nano::rpc_config conf;
+	nano::rpc_config defaults;
+	conf.deserialize_toml (toml);
+
+	ASSERT_FALSE (toml.get_error ()) << toml.get_error ().get_message ();
+}
diff --git a/nano/lib/rpcconfig.cpp b/nano/lib/rpcconfig.cpp
index 7ef2477ce..90c73a891 100644
--- a/nano/lib/rpcconfig.cpp
+++ b/nano/lib/rpcconfig.cpp
@@ -43,13 +43,13 @@ nano::error nano::rpc_secure_config::serialize_toml (nano::tomlconfig & toml) co
 
 nano::error nano::rpc_secure_config::deserialize_toml (nano::tomlconfig & toml)
 {
-	toml.get_required<bool> ("enable", enable);
-	toml.get_required<bool> ("verbose_logging", verbose_logging);
-	toml.get_required<std::string> ("server_key_passphrase", server_key_passphrase);
-	toml.get_required<std::string> ("server_cert_path", server_cert_path);
-	toml.get_required<std::string> ("server_key_path", server_key_path);
-	toml.get_required<std::string> ("server_dh_path", server_dh_path);
-	toml.get_required<std::string> ("client_certs_path", client_certs_path);
+	toml.get<bool> ("enable", enable);
+	toml.get<bool> ("verbose_logging", verbose_logging);
+	toml.get<std::string> ("server_key_passphrase", server_key_passphrase);
+	toml.get<std::string> ("server_cert_path", server_cert_path);
+	toml.get<std::string> ("server_key_path", server_key_path);
+	toml.get<std::string> ("server_dh_path", server_dh_path);
+	toml.get<std::string> ("client_certs_path", client_certs_path);
 	return toml.get_error ();
 }
 
diff --git a/nano/node/websocketconfig.cpp b/nano/node/websocketconfig.cpp
index 611519993..14a5ce9ab 100644
--- a/nano/node/websocketconfig.cpp
+++ b/nano/node/websocketconfig.cpp
@@ -18,7 +18,7 @@ nano::error nano::websocket::config::serialize_toml (nano::tomlconfig & toml) co
 nano::error nano::websocket::config::deserialize_toml (nano::tomlconfig & toml)
 {
 	toml.get<bool> ("enable", enabled);
-	toml.get_required<boost::asio::ip::address_v6> ("address", address);
+	toml.get<boost::asio::ip::address_v6> ("address", address);
 	toml.get<uint16_t> ("port", port);
 	return toml.get_error ();
 }