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kerberos: Move support for SpUnsealMessage to the Unix library. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2021-04-21 09:47:29 +02:00 committed by Alexandre Julliard
parent 9120045653
commit 44593a6364
3 changed files with 78 additions and 247 deletions
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248
dlls/kerberos/krb5_ap.c
View File

@ -54,8 +54,6 @@ static HINSTANCE instance;
const struct krb5_funcs *krb5_funcs = NULL;
#define KERBEROS_MAX_BUF 12000
#define KERBEROS_CAPS \
( SECPKG_FLAG_INTEGRITY \
| SECPKG_FLAG_PRIVACY \
@ -600,162 +598,6 @@ static NTSTATUS NTAPI kerberos_SpGetInfo(SecPkgInfoW *info)
return STATUS_SUCCESS;
}
#ifdef SONAME_LIBGSSAPI_KRB5
WINE_DECLARE_DEBUG_CHANNEL(winediag);
static void *libgssapi_krb5_handle;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
MAKE_FUNCPTR(gss_accept_sec_context);
MAKE_FUNCPTR(gss_acquire_cred);
MAKE_FUNCPTR(gss_delete_sec_context);
MAKE_FUNCPTR(gss_display_status);
MAKE_FUNCPTR(gss_get_mic);
MAKE_FUNCPTR(gss_import_name);
MAKE_FUNCPTR(gss_init_sec_context);
MAKE_FUNCPTR(gss_inquire_context);
MAKE_FUNCPTR(gss_release_buffer);
MAKE_FUNCPTR(gss_release_cred);
MAKE_FUNCPTR(gss_release_iov_buffer);
MAKE_FUNCPTR(gss_release_name);
MAKE_FUNCPTR(gss_unwrap);
MAKE_FUNCPTR(gss_unwrap_iov);
MAKE_FUNCPTR(gss_verify_mic);
MAKE_FUNCPTR(gss_wrap);
MAKE_FUNCPTR(gss_wrap_iov);
#undef MAKE_FUNCPTR
static BOOL load_gssapi_krb5(void)
{
if (!(libgssapi_krb5_handle = dlopen( SONAME_LIBGSSAPI_KRB5, RTLD_NOW )))
{
ERR_(winediag)( "Failed to load libgssapi_krb5, Kerberos SSP support will not be available.\n" );
return FALSE;
}
#define LOAD_FUNCPTR(f) \
if (!(p##f = dlsym( libgssapi_krb5_handle, #f ))) \
{ \
ERR( "Failed to load %s\n", #f ); \
goto fail; \
}
LOAD_FUNCPTR(gss_accept_sec_context)
LOAD_FUNCPTR(gss_acquire_cred)
LOAD_FUNCPTR(gss_delete_sec_context)
LOAD_FUNCPTR(gss_display_status)
LOAD_FUNCPTR(gss_get_mic)
LOAD_FUNCPTR(gss_import_name)
LOAD_FUNCPTR(gss_init_sec_context)
LOAD_FUNCPTR(gss_inquire_context)
LOAD_FUNCPTR(gss_release_buffer)
LOAD_FUNCPTR(gss_release_cred)
LOAD_FUNCPTR(gss_release_iov_buffer)
LOAD_FUNCPTR(gss_release_name)
LOAD_FUNCPTR(gss_unwrap)
LOAD_FUNCPTR(gss_unwrap_iov)
LOAD_FUNCPTR(gss_verify_mic)
LOAD_FUNCPTR(gss_wrap)
LOAD_FUNCPTR(gss_wrap_iov)
#undef LOAD_FUNCPTR
return TRUE;
fail:
dlclose( libgssapi_krb5_handle );
libgssapi_krb5_handle = NULL;
return FALSE;
}
static void unload_gssapi_krb5(void)
{
dlclose( libgssapi_krb5_handle );
libgssapi_krb5_handle = NULL;
}
static inline gss_ctx_id_t ctxthandle_sspi_to_gss( LSA_SEC_HANDLE ctxt )
{
if (!ctxt) return GSS_C_NO_CONTEXT;
return (gss_ctx_id_t)ctxt;
}
static NTSTATUS status_gss_to_sspi( OM_uint32 status )
{
switch (status)
{
case GSS_S_COMPLETE: return SEC_E_OK;
case GSS_S_BAD_MECH: return SEC_E_SECPKG_NOT_FOUND;
case GSS_S_BAD_SIG: return SEC_E_MESSAGE_ALTERED;
case GSS_S_NO_CRED: return SEC_E_NO_CREDENTIALS;
case GSS_S_NO_CONTEXT: return SEC_E_INVALID_HANDLE;
case GSS_S_DEFECTIVE_TOKEN: return SEC_E_INVALID_TOKEN;
case GSS_S_DEFECTIVE_CREDENTIAL: return SEC_E_NO_CREDENTIALS;
case GSS_S_CREDENTIALS_EXPIRED: return SEC_E_CONTEXT_EXPIRED;
case GSS_S_CONTEXT_EXPIRED: return SEC_E_CONTEXT_EXPIRED;
case GSS_S_BAD_QOP: return SEC_E_QOP_NOT_SUPPORTED;
case GSS_S_CONTINUE_NEEDED: return SEC_I_CONTINUE_NEEDED;
case GSS_S_DUPLICATE_TOKEN: return SEC_E_INVALID_TOKEN;
case GSS_S_OLD_TOKEN: return SEC_E_INVALID_TOKEN;
case GSS_S_UNSEQ_TOKEN: return SEC_E_OUT_OF_SEQUENCE;
case GSS_S_GAP_TOKEN: return SEC_E_OUT_OF_SEQUENCE;
case GSS_S_FAILURE: return SEC_E_INTERNAL_ERROR;
default:
FIXME( "couldn't convert status 0x%08x to NTSTATUS\n", status );
return SEC_E_INTERNAL_ERROR;
}
}
static void trace_gss_status_ex( OM_uint32 code, int type )
{
OM_uint32 ret, minor_status;
gss_buffer_desc buf;
OM_uint32 message_context = 0;
for (;;)
{
ret = pgss_display_status( &minor_status, code, type, GSS_C_NULL_OID, &message_context, &buf );
if (GSS_ERROR(ret))
{
TRACE( "gss_display_status(0x%08x,%d) returned %08x minor status %08x\n",
code, type, ret, minor_status );
return;
}
TRACE( "GSS-API error: 0x%08x: %s\n", code, debugstr_an(buf.value, buf.length) );
pgss_release_buffer( &minor_status, &buf );
if (!message_context) return;
}
}
static void trace_gss_status( OM_uint32 major_status, OM_uint32 minor_status )
{
if (TRACE_ON(kerberos))
{
trace_gss_status_ex( major_status, GSS_C_GSS_CODE );
trace_gss_status_ex( minor_status, GSS_C_MECH_CODE );
}
}
static BOOL is_dce_style_context( gss_ctx_id_t ctxt_handle )
{
OM_uint32 ret, minor_status, flags;
ret = pgss_inquire_context( &minor_status, ctxt_handle, NULL, NULL, NULL, NULL, &flags, NULL, NULL );
return (ret == GSS_S_COMPLETE && (flags & GSS_C_DCE_STYLE));
}
static int get_buffer_index( SecBufferDesc *desc, DWORD type )
{
UINT i;
if (!desc) return -1;
for (i = 0; i < desc->cBuffers; i++)
{
if (desc->pBuffers[i].BufferType == type) return i;
}
return -1;
}
#endif /* SONAME_LIBGSSAPI_KRB5 */
static char *get_str_unixcp( const UNICODE_STRING *str )
{
char *ret;
@ -955,20 +797,12 @@ static NTSTATUS NTAPI kerberos_SpInitialize(ULONG_PTR package_id, SECPKG_PARAMET
WARN( "no Kerberos support\n" );
return STATUS_UNSUCCESSFUL;
}
#ifdef SONAME_LIBGSSAPI_KRB5
if (load_gssapi_krb5()) return STATUS_SUCCESS;
#endif
return STATUS_SUCCESS;
}
static NTSTATUS NTAPI kerberos_SpShutdown(void)
{
TRACE("\n");
#ifdef SONAME_LIBGSSAPI_KRB5
unload_gssapi_krb5();
#endif
return STATUS_SUCCESS;
}
@ -1060,93 +894,14 @@ static NTSTATUS NTAPI kerberos_SpSealMessage( LSA_SEC_HANDLE context, ULONG qual
return krb5_funcs->seal_message( context, message, quality_of_protection );
}
#ifdef SONAME_LIBGSSAPI_KRB5
static NTSTATUS unseal_message_iov( gss_ctx_id_t ctxt_handle, SecBufferDesc *message, ULONG *quality_of_protection )
{
gss_iov_buffer_desc iov[4];
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
if ((data_idx = get_buffer_index( message, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( message, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
iov[0].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[0].buffer.length = 0;
iov[0].buffer.value = NULL;
iov[1].type = GSS_IOV_BUFFER_TYPE_DATA;
iov[1].buffer.length = message->pBuffers[data_idx].cbBuffer;
iov[1].buffer.value = message->pBuffers[data_idx].pvBuffer;
iov[2].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[2].buffer.length = 0;
iov[2].buffer.value = NULL;
iov[3].type = GSS_IOV_BUFFER_TYPE_HEADER;
iov[3].buffer.length = message->pBuffers[token_idx].cbBuffer;
iov[3].buffer.value = message->pBuffers[token_idx].pvBuffer;
ret = pgss_unwrap_iov( &minor_status, ctxt_handle, &conf_state, NULL, iov, 4 );
TRACE( "gss_unwrap_iov returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR(ret)) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE && quality_of_protection)
{
*quality_of_protection = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
}
return status_gss_to_sspi( ret );
}
static NTSTATUS unseal_message( gss_ctx_id_t ctxt_handle, SecBufferDesc *message, ULONG *quality_of_protection )
{
gss_buffer_desc input, output;
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
DWORD len_data, len_token;
if ((data_idx = get_buffer_index( message, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( message, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
len_data = message->pBuffers[data_idx].cbBuffer;
len_token = message->pBuffers[token_idx].cbBuffer;
input.length = len_data + len_token;
if (!(input.value = heap_alloc( input.length ))) return SEC_E_INSUFFICIENT_MEMORY;
memcpy( input.value, message->pBuffers[data_idx].pvBuffer, len_data );
memcpy( (char *)input.value + len_data, message->pBuffers[token_idx].pvBuffer, len_token );
ret = pgss_unwrap( &minor_status, ctxt_handle, &input, &output, &conf_state, NULL );
heap_free( input.value );
TRACE( "gss_unwrap returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR(ret)) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE)
{
if (quality_of_protection) *quality_of_protection = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
memcpy( message->pBuffers[data_idx].pvBuffer, output.value, len_data );
pgss_release_buffer( &minor_status, &output );
}
return status_gss_to_sspi( ret );
}
#endif
static NTSTATUS NTAPI kerberos_SpUnsealMessage( LSA_SEC_HANDLE context, SecBufferDesc *message,
ULONG message_seq_no, ULONG *quality_of_protection )
{
#ifdef SONAME_LIBGSSAPI_KRB5
gss_ctx_id_t ctxt_handle;
TRACE( "(%lx %p %u %p)\n", context, message, message_seq_no, quality_of_protection );
if (message_seq_no) FIXME( "ignoring message_seq_no %u\n", message_seq_no );
if (!context) return SEC_E_INVALID_HANDLE;
ctxt_handle = ctxthandle_sspi_to_gss( context );
if (is_dce_style_context( ctxt_handle )) return unseal_message_iov( ctxt_handle, message, quality_of_protection );
return unseal_message( ctxt_handle, message, quality_of_protection );
#else
FIXME( "(%lx %p %u %p)\n", context, message, message_seq_no, quality_of_protection );
return SEC_E_UNSUPPORTED_FUNCTION;
#endif
return krb5_funcs->unseal_message( context, message, quality_of_protection );
}
static SECPKG_USER_FUNCTION_TABLE kerberos_user_table =
@ -1175,7 +930,6 @@ NTSTATUS NTAPI SpUserModeInitialize(ULONG lsa_version, PULONG package_version,
*package_version = SECPKG_INTERFACE_VERSION;
*table = &kerberos_user_table;
*table_count = 1;
return STATUS_SUCCESS;
}

76
dlls/kerberos/unixlib.c
View File

@ -734,6 +734,81 @@ static NTSTATUS CDECL seal_message( LSA_SEC_HANDLE context, SecBufferDesc *msg,
return seal_message_no_vector( ctx, msg, qop );
}
static NTSTATUS unseal_message_vector( gss_ctx_id_t ctx, SecBufferDesc *msg, ULONG *qop )
{
gss_iov_buffer_desc iov[4];
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
if ((data_idx = get_buffer_index( msg, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( msg, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
iov[0].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[0].buffer.length = 0;
iov[0].buffer.value = NULL;
iov[1].type = GSS_IOV_BUFFER_TYPE_DATA;
iov[1].buffer.length = msg->pBuffers[data_idx].cbBuffer;
iov[1].buffer.value = msg->pBuffers[data_idx].pvBuffer;
iov[2].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[2].buffer.length = 0;
iov[2].buffer.value = NULL;
iov[3].type = GSS_IOV_BUFFER_TYPE_HEADER;
iov[3].buffer.length = msg->pBuffers[token_idx].cbBuffer;
iov[3].buffer.value = msg->pBuffers[token_idx].pvBuffer;
ret = pgss_unwrap_iov( &minor_status, ctx, &conf_state, NULL, iov, 4 );
TRACE( "gss_unwrap_iov returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR( ret )) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE && qop)
{
*qop = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
}
return status_gss_to_sspi( ret );
}
static NTSTATUS unseal_message_no_vector( gss_ctx_id_t ctx, SecBufferDesc *msg, ULONG *qop )
{
gss_buffer_desc input, output;
OM_uint32 ret, minor_status;
int token_idx, data_idx, conf_state;
DWORD len_data, len_token;
if ((data_idx = get_buffer_index( msg, SECBUFFER_DATA )) == -1) return SEC_E_INVALID_TOKEN;
if ((token_idx = get_buffer_index( msg, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
len_data = msg->pBuffers[data_idx].cbBuffer;
len_token = msg->pBuffers[token_idx].cbBuffer;
input.length = len_data + len_token;
if (!(input.value = RtlAllocateHeap( GetProcessHeap(), 0, input.length ))) return SEC_E_INSUFFICIENT_MEMORY;
memcpy( input.value, msg->pBuffers[data_idx].pvBuffer, len_data );
memcpy( (char *)input.value + len_data, msg->pBuffers[token_idx].pvBuffer, len_token );
ret = pgss_unwrap( &minor_status, ctx, &input, &output, &conf_state, NULL );
RtlFreeHeap( GetProcessHeap(), 0, input.value );
TRACE( "gss_unwrap returned %08x minor status %08x\n", ret, minor_status );
if (GSS_ERROR( ret )) trace_gss_status( ret, minor_status );
if (ret == GSS_S_COMPLETE)
{
if (qop) *qop = (conf_state ? 0 : SECQOP_WRAP_NO_ENCRYPT);
memcpy( msg->pBuffers[data_idx].pvBuffer, output.value, len_data );
pgss_release_buffer( &minor_status, &output );
}
return status_gss_to_sspi( ret );
}
static NTSTATUS CDECL unseal_message( LSA_SEC_HANDLE context, SecBufferDesc *msg, ULONG *qop )
{
gss_ctx_id_t ctx = ctxhandle_sspi_to_gss( context );
if (is_dce_style_context( ctx )) return unseal_message_vector( ctx, msg, qop );
return unseal_message_no_vector( ctx, msg, qop );
}
static NTSTATUS CDECL verify_signature( LSA_SEC_HANDLE context, SecBufferDesc *msg, ULONG *qop )
{
OM_uint32 ret, minor_status;
@ -767,6 +842,7 @@ static const struct krb5_funcs funcs =
make_signature,
query_context_attributes,
seal_message,
unseal_message,
verify_signature,
};

1
dlls/kerberos/unixlib.h
View File

@ -34,6 +34,7 @@ struct krb5_funcs
NTSTATUS (CDECL *make_signature)(LSA_SEC_HANDLE, SecBufferDesc *);
NTSTATUS (CDECL *query_context_attributes)(LSA_SEC_HANDLE, ULONG, void *);
NTSTATUS (CDECL *seal_message)(LSA_SEC_HANDLE, SecBufferDesc *, ULONG);
NTSTATUS (CDECL *unseal_message)(LSA_SEC_HANDLE, SecBufferDesc *, ULONG *);
NTSTATUS (CDECL *verify_signature)(LSA_SEC_HANDLE, SecBufferDesc *, ULONG *);
};