Hans Leidekker : kerberos: Implement SpInitLsaModeContext.
Alexandre Julliard
julliard at winehq.org
Wed Jan 24 16:02:32 CST 2018
Module: wine
Branch: master
Commit: 61086485e8afa79d5c459b6bd900372a401a7863
URL: https://source.winehq.org/git/wine.git/?a=commit;h=61086485e8afa79d5c459b6bd900372a401a7863
Author: Hans Leidekker <hans at codeweavers.com>
Date: Thu Jan 18 23:51:28 2018 +0800
kerberos: Implement SpInitLsaModeContext.
Signed-off-by: Hans Leidekker <hans at codeweavers.com>
Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/kerberos/krb5_ap.c | 141 +++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 140 insertions(+), 1 deletion(-)
diff --git a/dlls/kerberos/krb5_ap.c b/dlls/kerberos/krb5_ap.c
index 06a0ad4..0821e7c 100644
--- a/dlls/kerberos/krb5_ap.c
+++ b/dlls/kerberos/krb5_ap.c
@@ -187,7 +187,10 @@ static void *libgssapi_krb5_handle;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
MAKE_FUNCPTR(gss_acquire_cred);
+MAKE_FUNCPTR(gss_delete_sec_context);
MAKE_FUNCPTR(gss_import_name);
+MAKE_FUNCPTR(gss_init_sec_context);
+MAKE_FUNCPTR(gss_release_buffer);
MAKE_FUNCPTR(gss_release_name);
#undef MAKE_FUNCPTR
@@ -207,7 +210,10 @@ static BOOL load_gssapi_krb5(void)
}
LOAD_FUNCPTR(gss_acquire_cred)
+ LOAD_FUNCPTR(gss_delete_sec_context)
LOAD_FUNCPTR(gss_import_name)
+ LOAD_FUNCPTR(gss_init_sec_context)
+ LOAD_FUNCPTR(gss_release_buffer)
LOAD_FUNCPTR(gss_release_name)
#undef LOAD_FUNCPTR
@@ -225,11 +231,28 @@ static void unload_gssapi_krb5(void)
libgssapi_krb5_handle = NULL;
}
+static inline gss_cred_id_t credhandle_sspi_to_gss( LSA_SEC_HANDLE cred )
+{
+ if (!cred) return GSS_C_NO_CREDENTIAL;
+ return (gss_cred_id_t)cred;
+}
+
static inline void credhandle_gss_to_sspi( gss_cred_id_t handle, LSA_SEC_HANDLE *cred )
{
*cred = (LSA_SEC_HANDLE)handle;
}
+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 inline void ctxthandle_gss_to_sspi( gss_ctx_id_t handle, LSA_SEC_HANDLE *ctxt )
+{
+ *ctxt = (LSA_SEC_HANDLE)handle;
+}
+
static SECURITY_STATUS status_gss_to_sspi( OM_uint32 status )
{
switch (status)
@@ -286,6 +309,43 @@ static SECURITY_STATUS name_sspi_to_gss( const UNICODE_STRING *name_str, gss_nam
HeapFree( GetProcessHeap(), 0, buf.value );
return status_gss_to_sspi( ret );
}
+
+static ULONG flags_isc_req_to_gss( ULONG flags )
+{
+ ULONG ret = GSS_C_DCE_STYLE;
+ if (flags & ISC_REQ_DELEGATE) ret |= GSS_C_DELEG_FLAG;
+ if (flags & ISC_REQ_MUTUAL_AUTH) ret |= GSS_C_MUTUAL_FLAG;
+ if (flags & ISC_REQ_REPLAY_DETECT) ret |= GSS_C_REPLAY_FLAG;
+ if (flags & ISC_REQ_SEQUENCE_DETECT) ret |= GSS_C_SEQUENCE_FLAG;
+ if (flags & ISC_REQ_CONFIDENTIALITY) ret |= GSS_C_CONF_FLAG;
+ if (flags & ISC_REQ_INTEGRITY) ret |= GSS_C_INTEG_FLAG;
+ if (flags & ISC_REQ_NULL_SESSION) ret |= GSS_C_ANON_FLAG;
+ return ret;
+}
+
+static ULONG flags_gss_to_isc_ret( ULONG flags )
+{
+ ULONG ret = 0;
+ if (flags & GSS_C_DELEG_FLAG) ret |= ISC_RET_DELEGATE;
+ if (flags & GSS_C_MUTUAL_FLAG) ret |= ISC_RET_MUTUAL_AUTH;
+ if (flags & GSS_C_REPLAY_FLAG) ret |= ISC_RET_REPLAY_DETECT;
+ if (flags & GSS_C_SEQUENCE_FLAG) ret |= ISC_RET_SEQUENCE_DETECT;
+ if (flags & GSS_C_CONF_FLAG) ret |= ISC_RET_CONFIDENTIALITY;
+ if (flags & GSS_C_INTEG_FLAG) ret |= ISC_RET_INTEGRITY;
+ if (flags & GSS_C_ANON_FLAG) ret |= ISC_RET_NULL_SESSION;
+ return ret;
+}
+
+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 NTSTATUS NTAPI kerberos_SpAcquireCredentialsHandle(
@@ -344,6 +404,85 @@ static NTSTATUS NTAPI kerberos_SpAcquireCredentialsHandle(
#endif
}
+static NTSTATUS NTAPI kerberos_SpInitLsaModeContext( LSA_SEC_HANDLE credential, LSA_SEC_HANDLE context,
+ UNICODE_STRING *target_name, ULONG context_req, ULONG target_data_rep, SecBufferDesc *input,
+ LSA_SEC_HANDLE *new_context, SecBufferDesc *output, ULONG *context_attr, TimeStamp *ts_expiry,
+ BOOLEAN *mapped_context, SecBuffer *context_data )
+{
+#ifdef SONAME_LIBGSSAPI_KRB5
+ static const ULONG supported = ISC_REQ_CONFIDENTIALITY | ISC_REQ_INTEGRITY | ISC_REQ_SEQUENCE_DETECT |
+ ISC_REQ_REPLAY_DETECT | ISC_REQ_MUTUAL_AUTH;
+ OM_uint32 ret, minor_status, ret_flags, expiry_time, req_flags = flags_isc_req_to_gss( context_req );
+ gss_cred_id_t cred_handle;
+ gss_ctx_id_t ctxt_handle;
+ gss_buffer_desc input_token, output_token;
+ gss_name_t target = GSS_C_NO_NAME;
+ int idx;
+
+ TRACE( "(%lx %lx %s 0x%08x %u %p %p %p %p %p %p %p)\n", credential, context, debugstr_us(target_name),
+ context_req, target_data_rep, input, new_context, output, context_attr, ts_expiry,
+ mapped_context, context_data );
+ if (context_req & ~supported)
+ {
+ FIXME( "flags 0x%08x not supported\n", context_req & ~supported );
+ return SEC_E_UNSUPPORTED_FUNCTION;
+ }
+
+ if (!context && !input && !credential) return SEC_E_INVALID_HANDLE;
+ cred_handle = credhandle_sspi_to_gss( credential );
+ ctxt_handle = ctxthandle_sspi_to_gss( context );
+
+ if (!input) input_token.length = 0;
+ else
+ {
+ if ((idx = get_buffer_index( input, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
+ input_token.length = input->pBuffers[idx].cbBuffer;
+ input_token.value = input->pBuffers[idx].pvBuffer;
+ }
+
+ if ((idx = get_buffer_index( output, SECBUFFER_TOKEN )) == -1) return SEC_E_INVALID_TOKEN;
+ output_token.length = 0;
+ output_token.value = NULL;
+
+ if (target_name && ((ret = name_sspi_to_gss( target_name, &target )) != SEC_E_OK)) return ret;
+
+ ret = pgss_init_sec_context( &minor_status, cred_handle, &ctxt_handle, target, GSS_C_NO_OID, req_flags, 0,
+ GSS_C_NO_CHANNEL_BINDINGS, &input_token, NULL, &output_token, &ret_flags,
+ &expiry_time );
+ TRACE( "gss_init_sec_context returned %08x minor status %08x ret_flags %08x\n", ret, minor_status, ret_flags );
+ if (ret == GSS_S_COMPLETE || ret == GSS_S_CONTINUE_NEEDED)
+ {
+ if (output_token.length > output->pBuffers[idx].cbBuffer) /* FIXME: check if larger buffer exists */
+ {
+ TRACE( "buffer too small %lu > %u\n", (SIZE_T)output_token.length, output->pBuffers[idx].cbBuffer );
+ pgss_release_buffer( &minor_status, &output_token );
+ pgss_delete_sec_context( &minor_status, &ctxt_handle, GSS_C_NO_BUFFER );
+ return SEC_E_INCOMPLETE_MESSAGE;
+ }
+ output->pBuffers[idx].cbBuffer = output_token.length;
+ memcpy( output->pBuffers[idx].pvBuffer, output_token.value, output_token.length );
+ pgss_release_buffer( &minor_status, &output_token );
+
+ ctxthandle_gss_to_sspi( ctxt_handle, new_context );
+ if (context_attr) *context_attr = flags_gss_to_isc_ret( ret_flags );
+ expirytime_gss_to_sspi( expiry_time, ts_expiry );
+ }
+
+ if (target != GSS_C_NO_NAME) pgss_release_name( &minor_status, &target );
+
+ /* we do support user mode SSP/AP functions */
+ *mapped_context = TRUE;
+ /* FIXME: initialize context_data */
+
+ return status_gss_to_sspi( ret );
+#else
+ FIXME( "(%lx %lx %s 0x%08x %u %p %p %p %p %p %p %p)\n", credential, context, debugstr_us(target_name),
+ context_req, target_data_rep, input, new_context, output, context_attr, ts_expiry,
+ mapped_context, context_data );
+ return SEC_E_UNSUPPORTED_FUNCTION;
+#endif
+}
+
static NTSTATUS NTAPI kerberos_SpInitialize(ULONG_PTR package_id, SECPKG_PARAMETERS *params,
LSA_SECPKG_FUNCTION_TABLE *lsa_function_table)
{
@@ -387,7 +526,7 @@ static SECPKG_FUNCTION_TABLE kerberos_table =
NULL, /* SaveCredentials */
NULL, /* GetCredentials */
NULL, /* DeleteCredentials */
- NULL, /* InitLsaModeContext */
+ kerberos_SpInitLsaModeContext,
NULL, /* AcceptLsaModeContext */
NULL, /* DeleteContext */
NULL, /* ApplyControlToken */
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