From dbccdcdcca24e04282e1d4558dc3b1935b6e6737 Mon Sep 17 00:00:00 2001
From: Alexey Vereschagin <avereschagin@dev.rtsoft.ru>
Date: Thu, 13 Sep 2018 02:35:27 +0300
Subject: [PATCH] Implement injectLibrary() function

---
 NativeLauncher/launcher/injection.cc | 29 +++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/NativeLauncher/launcher/injection.cc b/NativeLauncher/launcher/injection.cc
index 6aeaa61..31134f6 100644
--- a/NativeLauncher/launcher/injection.cc
+++ b/NativeLauncher/launcher/injection.cc
@@ -19,9 +19,36 @@
 #include <cstdlib>
 #include <cstring>
 
+#include <dlfcn.h>
+
 static int injectLibrary(const char path[])
 {
-	return 0;
+	typedef int inject_func();
+
+	int res = -1;
+	void *lib = nullptr;
+	inject_func *inject = nullptr;
+	const char *inject_sym = "dotnet_launcher_inject";
+
+	_INFO("Inject %s library", path);
+
+	// FIXME: remove RTLD_GLOBAL?
+	lib = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
+	if (lib == nullptr) {
+		_ERR("%s", dlerror());
+		goto ret;
+	}
+
+	inject = reinterpret_cast<inject_func*>(dlsym(lib, inject_sym));
+	if (inject == nullptr) {
+		_ERR("%s is not found in the %s", inject_sym, path);
+		goto ret;
+	}
+
+	res = inject();
+
+ret:
+	return res;
 }
 
 int doInjection()
-- 
2.34.1