From: Aleksei Vereshchagin <avereschagin@dev.rtsoft.ru>
Date: Thu, 13 Sep 2018 18:37:25 +0000 (+0300)
Subject: Implement injection logic with injectLibrary() stub
X-Git-Tag: submit/tizen/20181001.123900~2^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b73905c1c5c1cc6746c5246433e95433754a8c3f;p=platform%2Fcore%2Fdotnet%2Flauncher.git

Implement injection logic with injectLibrary() stub
---

diff --git a/NativeLauncher/CMakeLists.txt b/NativeLauncher/CMakeLists.txt
index 93cd551..e9ddfc7 100644
--- a/NativeLauncher/CMakeLists.txt
+++ b/NativeLauncher/CMakeLists.txt
@@ -78,6 +78,7 @@ TARGET_LINK_LIBRARIES(${DOTNET_LAUNCHER_UTIL} ${${PROJECT_NAME}_LDFLAGS})
 SET(DOTNET_LAUNCHER "dotnet-launcher")
 SET(${DOTNET_LAUNCHER}_SOURCE_FILES
     launcher/main.cc
+    launcher/injection.cc
     launcher/launcher.cc
     launcher/dotnet/dotnet_launcher.cc
 )
@@ -139,4 +140,3 @@ INSTALL(FILES inc/coreclr_host.h DESTINATION ${INCLUDEDIR})
 INSTALL(FILES inc/dotnet_launcher_plugin.h DESTINATION ${INCLUDEDIR})
 INSTALL(FILES installer-plugin/ni_common.h DESTINATION ${INCLUDEDIR})
 INSTALL(FILES ../dotnet-launcher.pc DESTINATION ${LIBDIR}/pkgconfig)
-
diff --git a/NativeLauncher/launcher/injection.cc b/NativeLauncher/launcher/injection.cc
new file mode 100644
index 0000000..6aeaa61
--- /dev/null
+++ b/NativeLauncher/launcher/injection.cc
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "log.h"
+
+#include <cstdlib>
+#include <cstring>
+
+static int injectLibrary(const char path[])
+{
+	return 0;
+}
+
+int doInjection()
+{
+	int res = -1;
+	char *env = nullptr;
+	char* injectableLibs = nullptr;
+	const char *delim = ", ";
+	char *lib = nullptr;
+
+	env = getenv("DOTNET_LAUNCHER_INJECT");
+	if (env == nullptr) {
+		res = 0;
+		goto ret;
+	}
+
+	_INFO("##### Perform injection #########");
+
+	injectableLibs = strdup(env);
+	if (injectableLibs == nullptr) {
+		_ERR("Fail to allocate memory for injectable library paths\n");
+		goto ret;
+	}
+
+	res = 0;
+	lib = strtok(injectableLibs, delim);
+	for(; lib != nullptr; lib = strtok(nullptr, delim)) {
+		if (injectLibrary(lib) != 0) {
+			res = -1;
+			break;
+		}
+	}
+
+	if (res == 0) {
+		_INFO("##### Injection finished #########");
+	} else {
+		_INFO("##### Injection failed #########");
+	}
+
+ret:
+	free(injectableLibs);
+
+	return res;
+}
diff --git a/NativeLauncher/launcher/injection.h b/NativeLauncher/launcher/injection.h
new file mode 100644
index 0000000..3a08992
--- /dev/null
+++ b/NativeLauncher/launcher/injection.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __INJETION_INTERFACE_H__
+#define __INJETION_INTERFACE_H__
+
+int doInjection();
+
+#endif // __INJETION_INTERFACE_H__
diff --git a/NativeLauncher/launcher/main.cc b/NativeLauncher/launcher/main.cc
index d1e3ce4..c11c423 100644
--- a/NativeLauncher/launcher/main.cc
+++ b/NativeLauncher/launcher/main.cc
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include "injection.h"
 #include "dotnet/dotnet_launcher.h"
 #include "utils.h"
 #include "log.h"
@@ -151,6 +152,10 @@ extern "C" int realMain(int argc, char *argv[], const char* mode)
 
 int main(int argc, char *argv[])
 {
+	int res = doInjection();
+	if (res != 0) {
+		return 1;
+	}
+
 	return realMain(argc, argv, "default");
 }
-
diff --git a/README.md b/README.md
index e85863e..1ac01f9 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,14 @@ dotnet-launcher [options...] [args...]
 * --standalone [assembly path]  
    Run assembly with the current user environment.
 
+#### environment
+
+* DOTNET_LAUNCHER_INJECT  
+   A list of additional libraries to be loaded with `dlopen()` and call to
+   `int dotnet_launcher_inject()` initialization hook. If hook returns non-zero
+   status initialization will be failed. The items of the list can be separated
+   by spaces or colons, and there is no support for escaping either separator.
+
 ----
 
 ### Anatomy