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kerberos: Allocate a buffer for the package info structure in kerberos_SpQueryContextAttributes. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2018-02-08 11:53:59 +01:00 committed by Alexandre Julliard
parent 64cbf292bb
commit c6e607ff1f
1 changed files with 20 additions and 1 deletions
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21
dlls/kerberos/krb5_ap.c
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@ -46,6 +46,7 @@
#include "wine/heap.h"
#include "wine/library.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(kerberos);
@ -1059,6 +1060,24 @@ static NTSTATUS NTAPI kerberos_SpDeleteContext( LSA_SEC_HANDLE context )
#endif
}
static SecPkgInfoW *build_package_info( const SecPkgInfoW *info )
{
SecPkgInfoW *ret;
DWORD size_name = (strlenW(info->Name) + 1) * sizeof(WCHAR);
DWORD size_comment = (strlenW(info->Comment) + 1) * sizeof(WCHAR);
if (!(ret = heap_alloc( sizeof(*ret) + size_name + size_comment ))) return NULL;
ret->fCapabilities = info->fCapabilities;
ret->wVersion = info->wVersion;
ret->wRPCID = info->wRPCID;
ret->cbMaxToken = info->cbMaxToken;
ret->Name = (SEC_WCHAR *)(ret + 1);
memcpy( ret->Name, info->Name, size_name );
ret->Comment = (SEC_WCHAR *)((char *)ret->Name + size_name);
memcpy( ret->Comment, info->Comment, size_comment );
return ret;
}
static NTSTATUS NTAPI kerberos_SpQueryContextAttributes( LSA_SEC_HANDLE context, ULONG attribute, void *buffer )
{
TRACE( "(%lx %u %p)\n", context, attribute, buffer );
@ -1103,7 +1122,7 @@ static NTSTATUS NTAPI kerberos_SpQueryContextAttributes( LSA_SEC_HANDLE context,
case SECPKG_ATTR_NEGOTIATION_INFO:
{
SecPkgContext_NegotiationInfoW *info = (SecPkgContext_NegotiationInfoW *)buffer;
info->PackageInfo = (SecPkgInfoW *)&infoW;
if (!(info->PackageInfo = build_package_info( &infoW ))) return SEC_E_INSUFFICIENT_MEMORY;
info->NegotiationState = SECPKG_NEGOTIATION_COMPLETE;
return SEC_E_OK;
}