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61f73d40ca
When wsrep is enabled, an md5 hash of the entire row is calculated for tables with no PK. It, however segfaulted as the md5 context object was not properly constructed. Fixed by ensuring that the YaSSL's context object gets constructed explicitly at the specified pre-allocated location (placement) before its used. Added a test case.
149 lines
3.4 KiB
C++
149 lines
3.4 KiB
C++
/* Copyright (c) 2012, Oracle and/or its affiliates.
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Copyright (c) 2014, SkySQL Ab.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
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/**
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@file
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@brief
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Wrapper functions for OpenSSL and YaSSL. Also provides a Compatibility layer
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to make available YaSSL's MD5 implementation.
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*/
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#include <my_global.h>
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#include <my_md5.h>
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#include <stdarg.h>
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#if defined(HAVE_YASSL)
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#include "md5.hpp"
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typedef TaoCrypt::MD5 MD5_CTX;
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static void md5_init(MD5_CTX *context)
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{
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context= new(context) MD5_CTX;
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context->Init();
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}
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/*
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this is a variant of md5_init to be used in this file only.
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does nothing for yassl, because the context's constructor was called automatically.
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*/
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static void md5_init_fast(MD5_CTX *context)
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{
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}
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static void md5_input(MD5_CTX *context, const uchar *buf, unsigned len)
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{
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context->Update((const TaoCrypt::byte *) buf, len);
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}
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static void md5_result(MD5_CTX *context, uchar digest[MD5_HASH_SIZE])
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{
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context->Final((TaoCrypt::byte *) digest);
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}
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#elif defined(HAVE_OPENSSL)
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#include <openssl/md5.h>
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static void md5_init(MD5_CTX *context)
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{
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MD5_Init(context);
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}
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static void md5_init_fast(MD5_CTX *context)
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{
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md5_init(context);
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}
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static void md5_input(MD5_CTX *context, const uchar *buf, unsigned len)
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{
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MD5_Update(context, buf, len);
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}
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static void md5_result(MD5_CTX *context, uchar digest[MD5_HASH_SIZE])
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{
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MD5_Final(digest, context);
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}
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#endif /* HAVE_YASSL */
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/**
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Wrapper function to compute MD5 message digest.
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@param digest [out] Computed MD5 digest
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@param buf [in] Message to be computed
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@param len [in] Length of the message
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@return void
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*/
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void my_md5(uchar *digest, const char *buf, size_t len)
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{
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MD5_CTX md5_context;
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md5_init_fast(&md5_context);
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md5_input(&md5_context, (const uchar *)buf, len);
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md5_result(&md5_context, digest);
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}
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/**
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Wrapper function to compute MD5 message digest for
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two messages in order to emulate md5(msg1, msg2).
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@param digest [out] Computed MD5 digest
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@param buf1 [in] First message
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@param len1 [in] Length of first message
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@param buf2 [in] Second message
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@param len2 [in] Length of second message
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@return void
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*/
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void my_md5_multi(uchar *digest, ...)
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{
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va_list args;
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va_start(args, digest);
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MD5_CTX md5_context;
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const uchar *str;
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md5_init_fast(&md5_context);
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for (str= va_arg(args, const uchar*); str; str= va_arg(args, const uchar*))
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md5_input(&md5_context, str, va_arg(args, size_t));
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md5_result(&md5_context, digest);
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va_end(args);
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}
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size_t my_md5_context_size()
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{
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return sizeof(MD5_CTX);
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}
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void my_md5_init(void *context)
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{
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md5_init((MD5_CTX *)context);
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}
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void my_md5_input(void *context, const uchar *buf, size_t len)
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{
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md5_input((MD5_CTX *)context, buf, len);
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}
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void my_md5_result(void *context, uchar *digest)
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{
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md5_result((MD5_CTX *)context, digest);
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}
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