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msv1_0: Implement SpVerifySignature. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2021-04-30 11:59:38 +02:00 committed by Alexandre Julliard
parent d865c04336
commit 9894c4fba3
1 changed files with 56 additions and 1 deletions
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57
dlls/msv1_0/main.c
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@ -1375,12 +1375,67 @@ static NTSTATUS NTAPI ntlm_SpMakeSignature( LSA_SEC_HANDLE handle, ULONG qop, Se
return create_signature( ctx, ctx->flags, msg, idx, SIGN_SEND, TRUE );
}
static NTSTATUS verify_signature( struct ntlm_ctx *ctx, unsigned int flags, SecBufferDesc *msg, int idx )
{
NTSTATUS status;
unsigned int i;
SecBufferDesc desc;
SecBuffer *buf;
char sig[16];
if (!(buf = malloc( msg->cBuffers * sizeof(*buf) ))) return SEC_E_INSUFFICIENT_MEMORY;
desc.ulVersion = SECBUFFER_VERSION;
desc.cBuffers = msg->cBuffers;
desc.pBuffers = buf;
for (i = 0; i < msg->cBuffers; i++)
{
if (msg->pBuffers[i].BufferType == SECBUFFER_TOKEN)
{
buf[i].BufferType = SECBUFFER_TOKEN;
buf[i].cbBuffer = 16;
buf[i].pvBuffer = sig;
}
else
{
buf[i].BufferType = msg->pBuffers[i].BufferType;
buf[i].cbBuffer = msg->pBuffers[i].cbBuffer;
buf[i].pvBuffer = msg->pBuffers[i].pvBuffer;
}
}
if ((status = create_signature( ctx, flags, &desc, idx, SIGN_RECV, TRUE )) == SEC_E_OK)
{
if (memcmp( (char *)buf[idx].pvBuffer + 8, (char *)msg->pBuffers[idx].pvBuffer + 8, 8 ))
status = SEC_E_MESSAGE_ALTERED;
}
free( buf );
return status;
}
static NTSTATUS NTAPI ntlm_SpVerifySignature( LSA_SEC_HANDLE handle, SecBufferDesc *msg, ULONG msg_seq_no, ULONG *qop )
{
struct ntlm_ctx *ctx = (struct ntlm_ctx *)handle;
int idx;
TRACE( "%lx, %p, %u, %p\n", handle, msg, msg_seq_no, qop );
if (msg_seq_no) FIXME( "ignoring message sequence number %u\n", msg_seq_no );
if (!handle) return SEC_E_INVALID_HANDLE;
if (!msg || !msg->pBuffers || msg->cBuffers < 2 || (idx = get_buffer_index( msg, SECBUFFER_TOKEN )) == -1)
return SEC_E_INVALID_TOKEN;
if (msg->pBuffers[idx].cbBuffer < 16) return SEC_E_BUFFER_TOO_SMALL;
return verify_signature( ctx, ctx->flags, msg, idx );
}
static SECPKG_USER_FUNCTION_TABLE ntlm_user_table =
{
ntlm_SpInstanceInit,
NULL, /* SpInitUserModeContext */
ntlm_SpMakeSignature,
NULL, /* SpVerifySignature */
ntlm_SpVerifySignature,
NULL, /* SpSealMessage */
NULL, /* SpUnsealMessage */
NULL, /* SpGetContextToken */