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MDEV-19617 Assertion `src' failed in MyCTX::update

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Apprently, sometimes there will be null pointers with 0 length
passed to the MyCTX::update() function, and  will need to return
a valid buffer.

So weaken the assertion, and use a valid pointer for src if it was NULL.
This commit is contained in:
Vladislav Vaintroub 2019-05-28 20:03:44 +02:00
parent 5e36f5dd00
commit 1df42a2ca0
1 changed files with 10 additions and 1 deletions
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11
mysys_ssl/my_crypt.cc
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@ -60,7 +60,16 @@ public:
}
virtual int update(const uchar *src, uint slen, uchar *dst, uint *dlen)
{
DBUG_ASSERT(src);
#ifdef HAVE_WOLFSSL
// WolfSSL checks parameters and does not like NULL pointers to be passed to function below.
if (!src)
{
static const uchar dummy[MY_AES_BLOCK_SIZE];
DBUG_ASSERT(!slen);
src=dummy;
}
#endif
if (EVP_CipherUpdate(ctx, dst, (int*)dlen, src, slen) != 1)
return MY_AES_OPENSSL_ERROR;
return MY_AES_OK;