From 17f3ab464da4832861fc16b3886c098c424ed5dd Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Thu, 21 Oct 2021 19:42:58 +0200
Subject: Added client/server config with env variables

---
 common/CMakeLists.txt         |  5 +++--
 common/include/hwd/internal.h | 13 +++++++++++--
 common/src/internal.cpp       | 27 +++++++++++++++++++++++++++
 daemon/src/daemon.cpp         |  2 +-
 library/src/library.cpp       |  2 +-
 5 files changed, 43 insertions(+), 6 deletions(-)
 create mode 100644 common/src/internal.cpp

diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 5c4c9e1..a126620 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -1,6 +1,7 @@
 project(common CXX)
-add_library(${PROJECT_NAME} INTERFACE
+add_library(${PROJECT_NAME} STATIC
+	src/internal.cpp
 	)
 target_include_directories(${PROJECT_NAME}
-	INTERFACE include
+	PUBLIC include
 	)
diff --git a/common/include/hwd/internal.h b/common/include/hwd/internal.h
index dab1e32..633c5a9 100644
--- a/common/include/hwd/internal.h
+++ b/common/include/hwd/internal.h
@@ -4,6 +4,15 @@ namespace hwd
 {
 namespace internal
 {
+
 constexpr int default_port = 4236;
-}
-}
+constexpr const char * default_host = "127.0.0.1";
+
+constexpr const char * port_variable = "HWDPORT";
+constexpr const char * host_variable = "HWDHOST";
+
+int port();
+const char * host();
+
+}  // namespace internal
+}  // namespace hwd
diff --git a/common/src/internal.cpp b/common/src/internal.cpp
new file mode 100644
index 0000000..de1e7b0
--- /dev/null
+++ b/common/src/internal.cpp
@@ -0,0 +1,27 @@
+#include "hwd/internal.h"
+
+#include <cstdlib>
+
+
+namespace hwd
+{
+namespace internal
+{
+
+int port()
+{
+	if (const char * from_env = std::getenv(port_variable))
+		if (int port_number = std::atoi(from_env))
+			return port_number;
+	return default_port;
+}
+
+const char * host()
+{
+	if (const char * from_env = std::getenv(host_variable))
+		return from_env;
+	return default_host;
+}
+
+}  // namespace internal
+}  // namespace hwd
diff --git a/daemon/src/daemon.cpp b/daemon/src/daemon.cpp
index 449292d..9c841f8 100644
--- a/daemon/src/daemon.cpp
+++ b/daemon/src/daemon.cpp
@@ -9,7 +9,7 @@
 
 int main(int, char **)
 {
-	rpc::server server(hwd::internal::default_port);
+	rpc::server server(hwd::internal::port());
 	Gpio gpio;
 	Assembly assembly {server};
 	assembly.add("gpio", gpio);
diff --git a/library/src/library.cpp b/library/src/library.cpp
index d5c51c7..18c3cff 100644
--- a/library/src/library.cpp
+++ b/library/src/library.cpp
@@ -7,7 +7,7 @@ namespace hwd
 
 static rpc::client & get_client()
 {
-	static rpc::client c("127.0.0.1", hwd::internal::default_port);
+	static rpc::client c(hwd::internal::host(), hwd::internal::port());
 	return c;
 }
 
-- 
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