From 60a80bb4d29a0d6a41ae21431ad75fb4e6def837 Mon Sep 17 00:00:00 2001
From: Uladzislau Harbuz <u.harbuz@samsung.com>
Date: Tue, 19 Sep 2017 14:13:56 +0200
Subject: [PATCH] Destroy tizen context, get right uid of client

Change-Id: I85cbd1773a304d376c61477e9b1202e366e3f32c
---
 simulatordaemon/inc/SecurityContext.h   |  2 +-
 simulatordaemon/src/SecurityContext.cpp | 46 ++++++++++++++++++++++-----------
 2 files changed, 32 insertions(+), 16 deletions(-)

diff --git a/simulatordaemon/inc/SecurityContext.h b/simulatordaemon/inc/SecurityContext.h
index b9b7655..2ebf6b6 100644
--- a/simulatordaemon/inc/SecurityContext.h
+++ b/simulatordaemon/inc/SecurityContext.h
@@ -44,7 +44,7 @@ private:
 		TEE_TASTORE_ROOT,
 	};
 
-	static std::string getCaFullPathFromPkgId(char*);
+	std::string getCaFullPathFromPkgId(char*);
 
 public:
 	SecurityContext();
diff --git a/simulatordaemon/src/SecurityContext.cpp b/simulatordaemon/src/SecurityContext.cpp
index 699f6be..a70c9e8 100644
--- a/simulatordaemon/src/SecurityContext.cpp
+++ b/simulatordaemon/src/SecurityContext.cpp
@@ -32,10 +32,12 @@
 #include <stdexcept>
 #include <tzplatform_config.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
 
 using p_char = std::unique_ptr<char, std::function<void(void*)>>;
 using p_cynara_conf = std::unique_ptr<cynara_configuration, std::function<void(cynara_configuration*)>>;
-using p_tzplatform_context= std::unique_ptr<tzplatform_context, std::function<void(tzplatform_context*)>>;
+using p_tzplatform_context = std::unique_ptr<tzplatform_context, std::function<void(tzplatform_context*)>>;
 
 namespace fs = boost::filesystem;
 
@@ -51,40 +53,54 @@ pthread_mutex_t cynara_mutex = PTHREAD_MUTEX_INITIALIZER;
 #define BOOST_FILESYSTEM_VERSION 3
 #define RETURN_UNLOCK(ret, mtx) {pthread_mutex_unlock(&mtx); return ret;}
 
-/* TODO: this function needs to be tested.
- */
+
 std::string SecurityContext::getCaFullPathFromPkgId(char* pkgid) {
 
 	std::string path;
 
 	tzplatform_variable ids[3] = {TZ_USER_APP, TZ_SYS_RW_APP, TZ_SYS_RO_APP};
 	tzplatform_context *ctx;
-	if (! tzplatform_context_create(&ctx)) {
-	    LOGE(SIM_DAEMON, "Can't create tizen context");
-	    return path;
+	if (tzplatform_context_create(&ctx) != 0) {
+		LOGE(SIM_DAEMON, "Can't create tizen context");
+		return "";
+	}
+
+	p_tzplatform_context p_ctx(ctx, &tzplatform_context_destroy);
+
+	auto len = sizeof(struct ucred);
+	struct ucred ucred;
+
+	if (getsockopt(connFd, SOL_SOCKET, SO_PEERCRED, &ucred, &len) == -1) {
+		LOGE(SIM_DAEMON, "Can't get uid of client");
+		return "";
 	}
 
-	p_tzplatform_context p_ctx(ctx, &free);
+	auto clientUID = ucred.uid;
 
-	if (! tzplatform_context_set_user(p_ctx.get(), getuid())) {
-	    LOGE(SIM_DAEMON, "Can not set user for context");
-	    return path;
+	if (tzplatform_context_set_user(p_ctx.get(), clientUID) != 0) {
+		LOGE(SIM_DAEMON, "Can not set user for context");
+		return "";
 	}
 
 	for (auto &id : ids) {
-	    path = std::move(tzplatform_context_getenv(p_ctx.get(), id));
-	    LOGD(SIM_DAEMON, "Path is : %s", path.c_str());
-	    if (! path.empty()) break;
+		path = std::move(tzplatform_context_getenv(p_ctx.get(), id));
+		LOGD(SIM_DAEMON, "Path is : %s", path.c_str());
+		if (!path.empty()) break;
+	}
+
+	if (!fs::exists(path)) {
+		LOGE(SIM_DAEMON, "Path doesn't exist: %s", path.c_str());
+		return "";
 	}
 
-	path = fs::read_symlink(fs::path(path)).parent_path().string();
+	path = fs::read_symlink(fs::path(path)).string();
 
 	if (path.empty()) {
 		LOGE(SIM_DAEMON, "Bad CA path. Does this directory exist: %s ?", path.c_str());
 	}
 
 	path += "/" + std::string(pkgid) + TA_LOCAL_PATH;
-	LOGD(SIM_DAEMON, "Path::::: &s", path.c_str());
+	LOGD(SIM_DAEMON, "Path: %s", path.c_str());
 
 	return path;
 }
-- 
2.7.4