#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>
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;
}