From 9ab4547491e1bc0ba0564581a9390ed63b09348e Mon Sep 17 00:00:00 2001
From: =?utf8?q?=EC=9D=B4=ED=98=95=EC=A3=BC/MDE=20Lab=28SR=29/=EC=82=BC?=
 =?utf8?q?=EC=84=B1=EC=A0=84=EC=9E=90?= <leee.lee@samsung.com>
Date: Mon, 24 Jul 2023 13:31:33 +0900
Subject: [PATCH] Fix deprecated SHA* to EVP_MD* (#473)

* Fix deprecated SHA* to EVP_MD*
---
 NativeLauncher/util/utils.cc | 63 ++++++++++++++++++++++++++++++++++----------
 1 file changed, 49 insertions(+), 14 deletions(-)

diff --git a/NativeLauncher/util/utils.cc b/NativeLauncher/util/utils.cc
index 963cb7f..9f34fb4 100644
--- a/NativeLauncher/util/utils.cc
+++ b/NativeLauncher/util/utils.cc
@@ -23,7 +23,10 @@
 #include <pkgmgr_installer_info.h>
 #include <sys/smack.h>
 #include <sys/prctl.h>
-#include <openssl/sha.h>
+
+#include <openssl/evp.h>
+#include <openssl/crypto.h>
+
 #include <mntent.h>
 
 #include <cstdlib>
@@ -707,36 +710,68 @@ std::string getFileName(const std::string& path)
 
 std::string SHA256(const std::string& path)
 {
+	int bytesRead = 0;
+	const int bufSize = 32768;
+
+	unsigned int digest_len = 0;
+	unsigned char* digest = NULL;
+
+	std::stringstream ss;
+	EVP_MD_CTX *mdctx = NULL;
 	std::string output = "";
+
 	FILE *file = fopen(path.c_str(), "rb");
 	if (!file) {
 		return output;
 	}
 
-	unsigned char hash[SHA256_DIGEST_LENGTH];
-	SHA256_CTX sha256;
-	SHA256_Init(&sha256);
-	int bytesRead = 0;
-	const int bufSize = 32768;
 	char *buffer = (char*)malloc(bufSize);
 	if (!buffer) {
-		fclose(file);
-		return output;
+		goto cleanup4;
+	}
+
+	mdctx = EVP_MD_CTX_new();
+	if (mdctx == NULL) {
+		_ERR("Message Digest Context creation NULL");
+		goto cleanup3;
+	}
+
+	digest = (unsigned char*)OPENSSL_malloc(EVP_MD_size(EVP_sha256()));
+	if (!digest) {
+		_ERR("Memory Allocation for SHA256 failed");
+		goto cleanup2;
+	}
+
+	if (!EVP_DigestInit_ex(mdctx, EVP_sha256(), NULL)) {
+		_ERR("Message Digest init failed");
+		goto cleanup1;
 	}
 
 	while ((bytesRead = fread(buffer, 1, bufSize, file))) {
-		SHA256_Update(&sha256, buffer, bytesRead);
+		if (!EVP_DigestUpdate(mdctx, buffer, bytesRead)) {
+			_ERR("Message Digest update failed");
+			goto cleanup1;
+		}
 	}
-	SHA256_Final(hash, &sha256);
 
-	std::stringstream ss;
-	for (int i = 0; i < SHA256_DIGEST_LENGTH; i++) {
-		ss << std::hex << std::setw(2) << std::setfill('0') << (int)hash[i];
+	if (!EVP_DigestFinal_ex(mdctx, digest, &digest_len)) {
+		_ERR("Message Digest Finalization falied");
+		goto cleanup1;
+	}
+
+	for (unsigned int i = 0; i < digest_len; i++) {
+		ss << std::hex << std::setw(2) << std::setfill('0') << (int)digest[i];
 	}
 	output = ss.str();
 
-	fclose(file);
+cleanup1:
+	EVP_MD_CTX_free(mdctx);
+cleanup2:
+	OPENSSL_free(digest);
+cleanup3:
 	free(buffer);
+cleanup4:
+	fclose(file);
 
 	return output;
 }
-- 
2.7.4