init push

libmariadb/secure/openssl_crypt.c

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+/*
+    Copyright (C) 2018 MariaDB Corporation AB
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc.,
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+*/
+#include <ma_global.h>
+#include <ma_crypt.h>
+#include <openssl/evp.h>
+
+static const EVP_MD *ma_hash_get_algorithm(unsigned int alg)
+{
+  switch(alg)
+  {
+  case MA_HASH_MD5:
+    return EVP_md5();
+  case MA_HASH_SHA1:
+    return EVP_sha1();
+  case MA_HASH_SHA224:
+    return EVP_sha224();
+  case MA_HASH_SHA256:
+    return EVP_sha256();
+  case MA_HASH_SHA384:
+    return EVP_sha384();
+  case MA_HASH_SHA512:
+    return EVP_sha512();
+  case MA_HASH_RIPEMD160:
+    return EVP_ripemd160();
+  default:
+    return NULL;
+  }
+}
+
+MA_HASH_CTX *ma_hash_new(unsigned int algorithm, MA_HASH_CTX *unused __attribute__((unused)))
+{
+  EVP_MD_CTX *ctx= NULL;
+  const EVP_MD *evp_md= ma_hash_get_algorithm(algorithm);
+
+  /* unknown or unsupported hash algorithm */
+  if (!evp_md)
+    return NULL;
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+  if (!(ctx= EVP_MD_CTX_new()))
+#else
+  if (!(ctx= EVP_MD_CTX_create()))
+#endif
+    return NULL;
+  if (!EVP_DigestInit(ctx, evp_md))
+  {
+    ma_hash_free(ctx);
+    return NULL;
+  }
+  return ctx;
+}
+
+void ma_hash_free(MA_HASH_CTX *ctx)
+{
+  if (ctx)
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+    EVP_MD_CTX_free(ctx);
+#else
+    EVP_MD_CTX_destroy(ctx);
+#endif
+}
+
+void ma_hash_input(MA_HASH_CTX *ctx,
+                    const unsigned char *buffer,
+                    size_t len)
+{
+  EVP_DigestUpdate(ctx, buffer, len);
+}
+
+void ma_hash_result(MA_HASH_CTX *ctx, unsigned char *digest)
+{
+  EVP_DigestFinal_ex(ctx, digest, NULL);
+}