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1481 lines
46 KiB
C
1481 lines
46 KiB
C
/* Copyright (C) 2005 Juan Lang
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* Copyright 2008 Henri Verbeet
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* This file implements the schannel provider, or, the SSL/TLS implementations.
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*/
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#include "precomp.h"
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#include <wine/config.h>
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WINE_DEFAULT_DEBUG_CHANNEL(schannel);
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#if defined(SONAME_LIBGNUTLS) || defined (HAVE_SECURITY_SECURITY_H) || defined (SONAME_LIBMBEDTLS)
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#define SCHAN_INVALID_HANDLE ~0UL
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enum schan_handle_type
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{
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SCHAN_HANDLE_CRED,
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SCHAN_HANDLE_CTX,
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SCHAN_HANDLE_FREE
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};
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struct schan_handle
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{
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void *object;
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enum schan_handle_type type;
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};
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struct schan_context
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{
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schan_imp_session session;
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ULONG req_ctx_attr;
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const CERT_CONTEXT *cert;
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};
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static struct schan_handle *schan_handle_table;
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static struct schan_handle *schan_free_handles;
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static SIZE_T schan_handle_table_size;
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static SIZE_T schan_handle_count;
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/* Protocols enabled, only those may be used for the connection. */
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static DWORD config_enabled_protocols;
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/* Protocols disabled by default. They are enabled for using, but disabled when caller asks for default settings. */
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static DWORD config_default_disabled_protocols;
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static ULONG_PTR schan_alloc_handle(void *object, enum schan_handle_type type)
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{
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struct schan_handle *handle;
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if (schan_free_handles)
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{
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DWORD index = schan_free_handles - schan_handle_table;
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/* Use a free handle */
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handle = schan_free_handles;
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if (handle->type != SCHAN_HANDLE_FREE)
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{
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ERR("Handle %d(%p) is in the free list, but has type %#x.\n", index, handle, handle->type);
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return SCHAN_INVALID_HANDLE;
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}
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schan_free_handles = handle->object;
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handle->object = object;
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handle->type = type;
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return index;
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}
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if (!(schan_handle_count < schan_handle_table_size))
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{
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/* Grow the table */
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SIZE_T new_size = schan_handle_table_size + (schan_handle_table_size >> 1);
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struct schan_handle *new_table = HeapReAlloc(GetProcessHeap(), 0, schan_handle_table, new_size * sizeof(*schan_handle_table));
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if (!new_table)
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{
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ERR("Failed to grow the handle table\n");
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return SCHAN_INVALID_HANDLE;
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}
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schan_handle_table = new_table;
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schan_handle_table_size = new_size;
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}
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handle = &schan_handle_table[schan_handle_count++];
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handle->object = object;
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handle->type = type;
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return handle - schan_handle_table;
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}
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static void *schan_free_handle(ULONG_PTR handle_idx, enum schan_handle_type type)
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{
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struct schan_handle *handle;
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void *object;
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if (handle_idx == SCHAN_INVALID_HANDLE) return NULL;
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if (handle_idx >= schan_handle_count) return NULL;
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handle = &schan_handle_table[handle_idx];
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if (handle->type != type)
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{
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ERR("Handle %ld(%p) is not of type %#x\n", handle_idx, handle, type);
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return NULL;
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}
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object = handle->object;
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handle->object = schan_free_handles;
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handle->type = SCHAN_HANDLE_FREE;
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schan_free_handles = handle;
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return object;
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}
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static void *schan_get_object(ULONG_PTR handle_idx, enum schan_handle_type type)
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{
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struct schan_handle *handle;
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if (handle_idx == SCHAN_INVALID_HANDLE) return NULL;
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if (handle_idx >= schan_handle_count) return NULL;
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handle = &schan_handle_table[handle_idx];
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if (handle->type != type)
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{
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ERR("Handle %ld(%p) is not of type %#x\n", handle_idx, handle, type);
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return NULL;
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}
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return handle->object;
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}
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static void read_config(void)
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{
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DWORD enabled = 0, default_disabled = 0;
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HKEY protocols_key, key;
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WCHAR subkey_name[64];
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unsigned i;
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DWORD res;
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static BOOL config_read = FALSE;
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static const WCHAR protocol_config_key_name[] = {
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'S','Y','S','T','E','M','\\',
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'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
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'C','o','n','t','r','o','l','\\',
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'S','e','c','u','r','i','t','y','P','r','o','v','i','d','e','r','s','\\',
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'S','C','H','A','N','N','E','L','\\',
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'P','r','o','t','o','c','o','l','s',0 };
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static const WCHAR clientW[] = {'\\','C','l','i','e','n','t',0};
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static const WCHAR enabledW[] = {'e','n','a','b','l','e','d',0};
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static const WCHAR disabledbydefaultW[] = {'D','i','s','a','b','l','e','d','B','y','D','e','f','a','u','l','t',0};
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static const struct {
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WCHAR key_name[20];
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DWORD prot_client_flag;
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BOOL enabled; /* If no config is present, enable the protocol */
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BOOL disabled_by_default; /* Disable if caller asks for default protocol set */
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} protocol_config_keys[] = {
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{{'S','S','L',' ','2','.','0',0}, SP_PROT_SSL2_CLIENT, FALSE, TRUE}, /* NOTE: TRUE, TRUE on Windows */
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{{'S','S','L',' ','3','.','0',0}, SP_PROT_SSL3_CLIENT, TRUE, FALSE},
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{{'T','L','S',' ','1','.','0',0}, SP_PROT_TLS1_0_CLIENT, TRUE, FALSE},
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{{'T','L','S',' ','1','.','1',0}, SP_PROT_TLS1_1_CLIENT, TRUE, FALSE /* NOTE: not enabled by default on Windows */ },
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{{'T','L','S',' ','1','.','2',0}, SP_PROT_TLS1_2_CLIENT, TRUE, FALSE /* NOTE: not enabled by default on Windows */ }
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};
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/* No need for thread safety */
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if(config_read)
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return;
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res = RegOpenKeyExW(HKEY_LOCAL_MACHINE, protocol_config_key_name, 0, KEY_READ, &protocols_key);
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if(res == ERROR_SUCCESS) {
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DWORD type, size, value;
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for(i=0; i < sizeof(protocol_config_keys)/sizeof(*protocol_config_keys); i++) {
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strcpyW(subkey_name, protocol_config_keys[i].key_name);
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strcatW(subkey_name, clientW);
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res = RegOpenKeyExW(protocols_key, subkey_name, 0, KEY_READ, &key);
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if(res != ERROR_SUCCESS) {
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if(protocol_config_keys[i].enabled)
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enabled |= protocol_config_keys[i].prot_client_flag;
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if(protocol_config_keys[i].disabled_by_default)
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default_disabled |= protocol_config_keys[i].prot_client_flag;
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continue;
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}
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size = sizeof(value);
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res = RegQueryValueExW(key, enabledW, NULL, &type, (BYTE*)&value, &size);
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if(res == ERROR_SUCCESS) {
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if(type == REG_DWORD && value)
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enabled |= protocol_config_keys[i].prot_client_flag;
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}else if(protocol_config_keys[i].enabled) {
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enabled |= protocol_config_keys[i].prot_client_flag;
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}
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size = sizeof(value);
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res = RegQueryValueExW(key, disabledbydefaultW, NULL, &type, (BYTE*)&value, &size);
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if(res == ERROR_SUCCESS) {
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if(type != REG_DWORD || value)
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default_disabled |= protocol_config_keys[i].prot_client_flag;
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}else if(protocol_config_keys[i].disabled_by_default) {
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default_disabled |= protocol_config_keys[i].prot_client_flag;
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}
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RegCloseKey(key);
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}
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}else {
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/* No config, enable all known protocols. */
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for(i=0; i < sizeof(protocol_config_keys)/sizeof(*protocol_config_keys); i++) {
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if(protocol_config_keys[i].enabled)
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enabled |= protocol_config_keys[i].prot_client_flag;
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if(protocol_config_keys[i].disabled_by_default)
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default_disabled |= protocol_config_keys[i].prot_client_flag;
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}
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}
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RegCloseKey(protocols_key);
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config_enabled_protocols = enabled & schan_imp_enabled_protocols();
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config_default_disabled_protocols = default_disabled;
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config_read = TRUE;
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TRACE("enabled %x, disabled by default %x\n", config_enabled_protocols, config_default_disabled_protocols);
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}
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static SECURITY_STATUS schan_QueryCredentialsAttributes(
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PCredHandle phCredential, ULONG ulAttribute, VOID *pBuffer)
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{
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struct schan_credentials *cred;
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SECURITY_STATUS ret;
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cred = schan_get_object(phCredential->dwLower, SCHAN_HANDLE_CRED);
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if(!cred)
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return SEC_E_INVALID_HANDLE;
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switch (ulAttribute)
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{
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case SECPKG_ATTR_SUPPORTED_ALGS:
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if (pBuffer)
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{
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/* FIXME: get from CryptoAPI */
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FIXME("SECPKG_ATTR_SUPPORTED_ALGS: stub\n");
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ret = SEC_E_UNSUPPORTED_FUNCTION;
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}
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else
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ret = SEC_E_INTERNAL_ERROR;
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break;
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case SECPKG_ATTR_CIPHER_STRENGTHS:
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if (pBuffer)
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{
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SecPkgCred_CipherStrengths *r = pBuffer;
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/* FIXME: get from CryptoAPI */
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FIXME("SECPKG_ATTR_CIPHER_STRENGTHS: semi-stub\n");
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r->dwMinimumCipherStrength = 40;
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r->dwMaximumCipherStrength = 168;
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ret = SEC_E_OK;
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}
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else
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ret = SEC_E_INTERNAL_ERROR;
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break;
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case SECPKG_ATTR_SUPPORTED_PROTOCOLS:
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if(pBuffer) {
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/* Regardless of MSDN documentation, tests show that this attribute takes into account
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* what protocols are enabled for given credential. */
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((SecPkgCred_SupportedProtocols*)pBuffer)->grbitProtocol = cred->enabled_protocols;
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ret = SEC_E_OK;
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}else {
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ret = SEC_E_INTERNAL_ERROR;
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}
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break;
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default:
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ret = SEC_E_UNSUPPORTED_FUNCTION;
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}
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return ret;
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}
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static SECURITY_STATUS SEC_ENTRY schan_QueryCredentialsAttributesA(
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PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
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{
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SECURITY_STATUS ret;
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TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
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switch (ulAttribute)
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{
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case SECPKG_CRED_ATTR_NAMES:
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FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
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ret = SEC_E_UNSUPPORTED_FUNCTION;
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break;
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default:
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ret = schan_QueryCredentialsAttributes(phCredential, ulAttribute,
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pBuffer);
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}
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return ret;
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}
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SECURITY_STATUS SEC_ENTRY schan_QueryCredentialsAttributesW(
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PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
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{
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SECURITY_STATUS ret;
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TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
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switch (ulAttribute)
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{
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case SECPKG_CRED_ATTR_NAMES:
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FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
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ret = SEC_E_UNSUPPORTED_FUNCTION;
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break;
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default:
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ret = schan_QueryCredentialsAttributes(phCredential, ulAttribute,
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pBuffer);
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}
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return ret;
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}
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static SECURITY_STATUS schan_CheckCreds(const SCHANNEL_CRED *schanCred)
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{
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SECURITY_STATUS st;
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DWORD i;
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TRACE("dwVersion = %d\n", schanCred->dwVersion);
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TRACE("cCreds = %d\n", schanCred->cCreds);
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TRACE("hRootStore = %p\n", schanCred->hRootStore);
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TRACE("cMappers = %d\n", schanCred->cMappers);
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TRACE("cSupportedAlgs = %d:\n", schanCred->cSupportedAlgs);
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for (i = 0; i < schanCred->cSupportedAlgs; i++)
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TRACE("%08x\n", schanCred->palgSupportedAlgs[i]);
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TRACE("grbitEnabledProtocols = %08x\n", schanCred->grbitEnabledProtocols);
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TRACE("dwMinimumCipherStrength = %d\n", schanCred->dwMinimumCipherStrength);
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TRACE("dwMaximumCipherStrength = %d\n", schanCred->dwMaximumCipherStrength);
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TRACE("dwSessionLifespan = %d\n", schanCred->dwSessionLifespan);
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TRACE("dwFlags = %08x\n", schanCred->dwFlags);
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TRACE("dwCredFormat = %d\n", schanCred->dwCredFormat);
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switch (schanCred->dwVersion)
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{
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case SCH_CRED_V3:
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case SCHANNEL_CRED_VERSION:
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break;
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default:
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return SEC_E_INTERNAL_ERROR;
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}
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if (schanCred->cCreds == 0)
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st = SEC_E_NO_CREDENTIALS;
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else if (schanCred->cCreds > 1)
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st = SEC_E_UNKNOWN_CREDENTIALS;
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else
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{
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DWORD keySpec;
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HCRYPTPROV csp;
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BOOL ret, freeCSP;
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ret = CryptAcquireCertificatePrivateKey(schanCred->paCred[0],
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0, /* FIXME: what flags to use? */ NULL,
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&csp, &keySpec, &freeCSP);
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if (ret)
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{
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st = SEC_E_OK;
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if (freeCSP)
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CryptReleaseContext(csp, 0);
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}
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else
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st = SEC_E_UNKNOWN_CREDENTIALS;
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}
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return st;
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}
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static SECURITY_STATUS schan_AcquireClientCredentials(const SCHANNEL_CRED *schanCred,
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PCredHandle phCredential, PTimeStamp ptsExpiry)
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{
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struct schan_credentials *creds;
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unsigned enabled_protocols;
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ULONG_PTR handle;
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SECURITY_STATUS st = SEC_E_OK;
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TRACE("schanCred %p, phCredential %p, ptsExpiry %p\n", schanCred, phCredential, ptsExpiry);
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if (schanCred)
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{
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st = schan_CheckCreds(schanCred);
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if (st != SEC_E_OK && st != SEC_E_NO_CREDENTIALS)
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return st;
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st = SEC_E_OK;
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}
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read_config();
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if(schanCred && schanCred->grbitEnabledProtocols)
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enabled_protocols = schanCred->grbitEnabledProtocols & config_enabled_protocols;
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else
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enabled_protocols = config_enabled_protocols & ~config_default_disabled_protocols;
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if(!enabled_protocols) {
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ERR("Could not find matching protocol\n");
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return SEC_E_NO_AUTHENTICATING_AUTHORITY;
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}
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/* For now, the only thing I'm interested in is the direction of the
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* connection, so just store it.
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*/
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creds = HeapAlloc(GetProcessHeap(), 0, sizeof(*creds));
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if (!creds) return SEC_E_INSUFFICIENT_MEMORY;
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handle = schan_alloc_handle(creds, SCHAN_HANDLE_CRED);
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if (handle == SCHAN_INVALID_HANDLE) goto fail;
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creds->credential_use = SECPKG_CRED_OUTBOUND;
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if (!schan_imp_allocate_certificate_credentials(creds))
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{
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schan_free_handle(handle, SCHAN_HANDLE_CRED);
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goto fail;
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}
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|
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creds->enabled_protocols = enabled_protocols;
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phCredential->dwLower = handle;
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phCredential->dwUpper = 0;
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/* Outbound credentials have no expiry */
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if (ptsExpiry)
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{
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ptsExpiry->LowPart = 0;
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ptsExpiry->HighPart = 0;
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}
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return st;
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fail:
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HeapFree(GetProcessHeap(), 0, creds);
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return SEC_E_INTERNAL_ERROR;
|
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}
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|
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static SECURITY_STATUS schan_AcquireServerCredentials(const SCHANNEL_CRED *schanCred,
|
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PCredHandle phCredential, PTimeStamp ptsExpiry)
|
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{
|
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SECURITY_STATUS st;
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TRACE("schanCred %p, phCredential %p, ptsExpiry %p\n", schanCred, phCredential, ptsExpiry);
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if (!schanCred) return SEC_E_NO_CREDENTIALS;
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st = schan_CheckCreds(schanCred);
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if (st == SEC_E_OK)
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{
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ULONG_PTR handle;
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struct schan_credentials *creds;
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creds = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*creds));
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if (!creds) return SEC_E_INSUFFICIENT_MEMORY;
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creds->credential_use = SECPKG_CRED_INBOUND;
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|
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handle = schan_alloc_handle(creds, SCHAN_HANDLE_CRED);
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if (handle == SCHAN_INVALID_HANDLE)
|
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{
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HeapFree(GetProcessHeap(), 0, creds);
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return SEC_E_INTERNAL_ERROR;
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}
|
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|
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phCredential->dwLower = handle;
|
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phCredential->dwUpper = 0;
|
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|
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/* FIXME: get expiry from cert */
|
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}
|
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return st;
|
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}
|
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|
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static SECURITY_STATUS schan_AcquireCredentialsHandle(ULONG fCredentialUse,
|
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const SCHANNEL_CRED *schanCred, PCredHandle phCredential, PTimeStamp ptsExpiry)
|
|
{
|
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SECURITY_STATUS ret;
|
|
|
|
if (fCredentialUse == SECPKG_CRED_OUTBOUND)
|
|
ret = schan_AcquireClientCredentials(schanCred, phCredential,
|
|
ptsExpiry);
|
|
else
|
|
ret = schan_AcquireServerCredentials(schanCred, phCredential,
|
|
ptsExpiry);
|
|
return ret;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY schan_AcquireCredentialsHandleA(
|
|
SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
|
|
PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
|
|
PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
|
|
{
|
|
TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
|
|
debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
|
|
pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
|
|
return schan_AcquireCredentialsHandle(fCredentialUse,
|
|
pAuthData, phCredential, ptsExpiry);
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY schan_AcquireCredentialsHandleW(
|
|
SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
|
|
PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
|
|
PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
|
|
{
|
|
TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
|
|
debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
|
|
pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
|
|
return schan_AcquireCredentialsHandle(fCredentialUse,
|
|
pAuthData, phCredential, ptsExpiry);
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY schan_FreeCredentialsHandle(
|
|
PCredHandle phCredential)
|
|
{
|
|
struct schan_credentials *creds;
|
|
|
|
TRACE("phCredential %p\n", phCredential);
|
|
|
|
if (!phCredential) return SEC_E_INVALID_HANDLE;
|
|
|
|
creds = schan_free_handle(phCredential->dwLower, SCHAN_HANDLE_CRED);
|
|
if (!creds) return SEC_E_INVALID_HANDLE;
|
|
|
|
if (creds->credential_use == SECPKG_CRED_OUTBOUND)
|
|
schan_imp_free_certificate_credentials(creds);
|
|
HeapFree(GetProcessHeap(), 0, creds);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
static void init_schan_buffers(struct schan_buffers *s, const PSecBufferDesc desc,
|
|
int (*get_next_buffer)(const struct schan_transport *, struct schan_buffers *))
|
|
{
|
|
s->offset = 0;
|
|
s->limit = ~0UL;
|
|
s->desc = desc;
|
|
s->current_buffer_idx = -1;
|
|
s->allow_buffer_resize = FALSE;
|
|
s->get_next_buffer = get_next_buffer;
|
|
}
|
|
|
|
static int schan_find_sec_buffer_idx(const SecBufferDesc *desc, unsigned int start_idx, ULONG buffer_type)
|
|
{
|
|
unsigned int i;
|
|
PSecBuffer buffer;
|
|
|
|
for (i = start_idx; i < desc->cBuffers; ++i)
|
|
{
|
|
buffer = &desc->pBuffers[i];
|
|
if (buffer->BufferType == buffer_type) return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void schan_resize_current_buffer(const struct schan_buffers *s, SIZE_T min_size)
|
|
{
|
|
SecBuffer *b = &s->desc->pBuffers[s->current_buffer_idx];
|
|
SIZE_T new_size = b->cbBuffer ? b->cbBuffer * 2 : 128;
|
|
void *new_data;
|
|
|
|
if (b->cbBuffer >= min_size || !s->allow_buffer_resize || min_size > UINT_MAX / 2) return;
|
|
|
|
while (new_size < min_size) new_size *= 2;
|
|
|
|
if (b->pvBuffer)
|
|
new_data = HeapReAlloc(GetProcessHeap(), 0, b->pvBuffer, new_size);
|
|
else
|
|
new_data = HeapAlloc(GetProcessHeap(), 0, new_size);
|
|
|
|
if (!new_data)
|
|
{
|
|
TRACE("Failed to resize %p from %d to %ld\n", b->pvBuffer, b->cbBuffer, new_size);
|
|
return;
|
|
}
|
|
|
|
b->cbBuffer = new_size;
|
|
b->pvBuffer = new_data;
|
|
}
|
|
|
|
char *schan_get_buffer(const struct schan_transport *t, struct schan_buffers *s, SIZE_T *count)
|
|
{
|
|
SIZE_T max_count;
|
|
PSecBuffer buffer;
|
|
|
|
if (!s->desc)
|
|
{
|
|
TRACE("No desc\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (s->current_buffer_idx == -1)
|
|
{
|
|
/* Initial buffer */
|
|
int buffer_idx = s->get_next_buffer(t, s);
|
|
if (buffer_idx == -1)
|
|
{
|
|
TRACE("No next buffer\n");
|
|
return NULL;
|
|
}
|
|
s->current_buffer_idx = buffer_idx;
|
|
}
|
|
|
|
buffer = &s->desc->pBuffers[s->current_buffer_idx];
|
|
TRACE("Using buffer %d: cbBuffer %d, BufferType %#x, pvBuffer %p\n", s->current_buffer_idx, buffer->cbBuffer, buffer->BufferType, buffer->pvBuffer);
|
|
|
|
schan_resize_current_buffer(s, s->offset + *count);
|
|
max_count = buffer->cbBuffer - s->offset;
|
|
if (s->limit != ~0UL && s->limit < max_count)
|
|
max_count = s->limit;
|
|
if (!max_count)
|
|
{
|
|
int buffer_idx;
|
|
|
|
s->allow_buffer_resize = FALSE;
|
|
buffer_idx = s->get_next_buffer(t, s);
|
|
if (buffer_idx == -1)
|
|
{
|
|
TRACE("No next buffer\n");
|
|
return NULL;
|
|
}
|
|
s->current_buffer_idx = buffer_idx;
|
|
s->offset = 0;
|
|
return schan_get_buffer(t, s, count);
|
|
}
|
|
|
|
if (*count > max_count)
|
|
*count = max_count;
|
|
if (s->limit != ~0UL)
|
|
s->limit -= *count;
|
|
|
|
return (char *)buffer->pvBuffer + s->offset;
|
|
}
|
|
|
|
/* schan_pull
|
|
* Read data from the transport input buffer.
|
|
*
|
|
* t - The session transport object.
|
|
* buff - The buffer into which to store the read data. Must be at least
|
|
* *buff_len bytes in length.
|
|
* buff_len - On input, *buff_len is the desired length to read. On successful
|
|
* return, *buff_len is the number of bytes actually read.
|
|
*
|
|
* Returns:
|
|
* 0 on success, in which case:
|
|
* *buff_len == 0 indicates end of file.
|
|
* *buff_len > 0 indicates that some data was read. May be less than
|
|
* what was requested, in which case the caller should call again if/
|
|
* when they want more.
|
|
* EAGAIN when no data could be read without blocking
|
|
* another errno-style error value on failure
|
|
*
|
|
*/
|
|
int schan_pull(struct schan_transport *t, void *buff, size_t *buff_len)
|
|
{
|
|
char *b;
|
|
SIZE_T local_len = *buff_len;
|
|
|
|
TRACE("Pull %lu bytes\n", local_len);
|
|
|
|
*buff_len = 0;
|
|
|
|
b = schan_get_buffer(t, &t->in, &local_len);
|
|
if (!b)
|
|
return EAGAIN;
|
|
|
|
memcpy(buff, b, local_len);
|
|
t->in.offset += local_len;
|
|
|
|
TRACE("Read %lu bytes\n", local_len);
|
|
|
|
*buff_len = local_len;
|
|
return 0;
|
|
}
|
|
|
|
/* schan_push
|
|
* Write data to the transport output buffer.
|
|
*
|
|
* t - The session transport object.
|
|
* buff - The buffer of data to write. Must be at least *buff_len bytes in length.
|
|
* buff_len - On input, *buff_len is the desired length to write. On successful
|
|
* return, *buff_len is the number of bytes actually written.
|
|
*
|
|
* Returns:
|
|
* 0 on success
|
|
* *buff_len will be > 0 indicating how much data was written. May be less
|
|
* than what was requested, in which case the caller should call again
|
|
if/when they want to write more.
|
|
* EAGAIN when no data could be written without blocking
|
|
* another errno-style error value on failure
|
|
*
|
|
*/
|
|
int schan_push(struct schan_transport *t, const void *buff, size_t *buff_len)
|
|
{
|
|
char *b;
|
|
SIZE_T local_len = *buff_len;
|
|
|
|
TRACE("Push %lu bytes\n", local_len);
|
|
|
|
*buff_len = 0;
|
|
|
|
b = schan_get_buffer(t, &t->out, &local_len);
|
|
if (!b)
|
|
return EAGAIN;
|
|
|
|
memcpy(b, buff, local_len);
|
|
t->out.offset += local_len;
|
|
|
|
TRACE("Wrote %lu bytes\n", local_len);
|
|
|
|
*buff_len = local_len;
|
|
return 0;
|
|
}
|
|
|
|
schan_imp_session schan_session_for_transport(struct schan_transport* t)
|
|
{
|
|
return t->ctx->session;
|
|
}
|
|
|
|
static int schan_init_sec_ctx_get_next_input_buffer(const struct schan_transport *t, struct schan_buffers *s)
|
|
{
|
|
if (s->current_buffer_idx != -1)
|
|
return -1;
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
|
|
}
|
|
|
|
static int schan_init_sec_ctx_get_next_output_buffer(const struct schan_transport *t, struct schan_buffers *s)
|
|
{
|
|
if (s->current_buffer_idx == -1)
|
|
{
|
|
int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
|
|
if (t->ctx->req_ctx_attr & ISC_REQ_ALLOCATE_MEMORY)
|
|
{
|
|
if (idx == -1)
|
|
{
|
|
idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_EMPTY);
|
|
if (idx != -1) s->desc->pBuffers[idx].BufferType = SECBUFFER_TOKEN;
|
|
}
|
|
if (idx != -1 && !s->desc->pBuffers[idx].pvBuffer)
|
|
{
|
|
s->desc->pBuffers[idx].cbBuffer = 0;
|
|
s->allow_buffer_resize = TRUE;
|
|
}
|
|
}
|
|
return idx;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void dump_buffer_desc(SecBufferDesc *desc)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (!desc) return;
|
|
TRACE("Buffer desc %p:\n", desc);
|
|
for (i = 0; i < desc->cBuffers; ++i)
|
|
{
|
|
SecBuffer *b = &desc->pBuffers[i];
|
|
TRACE("\tbuffer %u: cbBuffer %d, BufferType %#x pvBuffer %p\n", i, b->cbBuffer, b->BufferType, b->pvBuffer);
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
* InitializeSecurityContextW
|
|
*/
|
|
SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextW(
|
|
PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
|
|
ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
|
|
PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
|
|
PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
|
|
{
|
|
struct schan_context *ctx;
|
|
struct schan_buffers *out_buffers;
|
|
struct schan_credentials *cred;
|
|
struct schan_transport transport;
|
|
SIZE_T expected_size = ~0UL;
|
|
SECURITY_STATUS ret;
|
|
|
|
TRACE("%p %p %s 0x%08x %d %d %p %d %p %p %p %p\n", phCredential, phContext,
|
|
debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
|
|
Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
|
|
|
|
dump_buffer_desc(pInput);
|
|
dump_buffer_desc(pOutput);
|
|
|
|
if (!phContext)
|
|
{
|
|
ULONG_PTR handle;
|
|
|
|
if (!phCredential) return SEC_E_INVALID_HANDLE;
|
|
|
|
cred = schan_get_object(phCredential->dwLower, SCHAN_HANDLE_CRED);
|
|
if (!cred) return SEC_E_INVALID_HANDLE;
|
|
|
|
if (!(cred->credential_use & SECPKG_CRED_OUTBOUND))
|
|
{
|
|
WARN("Invalid credential use %#x\n", cred->credential_use);
|
|
return SEC_E_INVALID_HANDLE;
|
|
}
|
|
|
|
ctx = HeapAlloc(GetProcessHeap(), 0, sizeof(*ctx));
|
|
if (!ctx) return SEC_E_INSUFFICIENT_MEMORY;
|
|
|
|
ctx->cert = NULL;
|
|
handle = schan_alloc_handle(ctx, SCHAN_HANDLE_CTX);
|
|
if (handle == SCHAN_INVALID_HANDLE)
|
|
{
|
|
HeapFree(GetProcessHeap(), 0, ctx);
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (!schan_imp_create_session(&ctx->session, cred))
|
|
{
|
|
schan_free_handle(handle, SCHAN_HANDLE_CTX);
|
|
HeapFree(GetProcessHeap(), 0, ctx);
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (pszTargetName)
|
|
{
|
|
UINT len = WideCharToMultiByte( CP_UNIXCP, 0, pszTargetName, -1, NULL, 0, NULL, NULL );
|
|
char *target = HeapAlloc( GetProcessHeap(), 0, len );
|
|
|
|
if (target)
|
|
{
|
|
WideCharToMultiByte( CP_UNIXCP, 0, pszTargetName, -1, target, len, NULL, NULL );
|
|
schan_imp_set_session_target( ctx->session, target );
|
|
HeapFree( GetProcessHeap(), 0, target );
|
|
}
|
|
}
|
|
phNewContext->dwLower = handle;
|
|
phNewContext->dwUpper = 0;
|
|
}
|
|
else
|
|
{
|
|
SIZE_T record_size = 0;
|
|
unsigned char *ptr;
|
|
SecBuffer *buffer;
|
|
int idx;
|
|
|
|
if (!pInput)
|
|
return SEC_E_INCOMPLETE_MESSAGE;
|
|
|
|
idx = schan_find_sec_buffer_idx(pInput, 0, SECBUFFER_TOKEN);
|
|
if (idx == -1)
|
|
return SEC_E_INCOMPLETE_MESSAGE;
|
|
|
|
buffer = &pInput->pBuffers[idx];
|
|
ptr = buffer->pvBuffer;
|
|
expected_size = 0;
|
|
|
|
while (buffer->cbBuffer > expected_size + 5)
|
|
{
|
|
record_size = 5 + ((ptr[3] << 8) | ptr[4]);
|
|
|
|
if (buffer->cbBuffer < expected_size + record_size)
|
|
break;
|
|
|
|
expected_size += record_size;
|
|
ptr += record_size;
|
|
}
|
|
|
|
if (!expected_size)
|
|
{
|
|
TRACE("Expected at least %lu bytes, but buffer only contains %u bytes.\n",
|
|
max(6, record_size), buffer->cbBuffer);
|
|
return SEC_E_INCOMPLETE_MESSAGE;
|
|
}
|
|
|
|
TRACE("Using expected_size %lu.\n", expected_size);
|
|
|
|
ctx = schan_get_object(phContext->dwLower, SCHAN_HANDLE_CTX);
|
|
}
|
|
|
|
ctx->req_ctx_attr = fContextReq;
|
|
|
|
transport.ctx = ctx;
|
|
init_schan_buffers(&transport.in, pInput, schan_init_sec_ctx_get_next_input_buffer);
|
|
transport.in.limit = expected_size;
|
|
init_schan_buffers(&transport.out, pOutput, schan_init_sec_ctx_get_next_output_buffer);
|
|
schan_imp_set_session_transport(ctx->session, &transport);
|
|
|
|
/* Perform the TLS handshake */
|
|
ret = schan_imp_handshake(ctx->session);
|
|
|
|
if(transport.in.offset && transport.in.offset != pInput->pBuffers[0].cbBuffer) {
|
|
if(pInput->cBuffers<2 || pInput->pBuffers[1].BufferType!=SECBUFFER_EMPTY)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
pInput->pBuffers[1].BufferType = SECBUFFER_EXTRA;
|
|
pInput->pBuffers[1].cbBuffer = pInput->pBuffers[0].cbBuffer-transport.in.offset;
|
|
}
|
|
|
|
out_buffers = &transport.out;
|
|
if (out_buffers->current_buffer_idx != -1)
|
|
{
|
|
SecBuffer *buffer = &out_buffers->desc->pBuffers[out_buffers->current_buffer_idx];
|
|
buffer->cbBuffer = out_buffers->offset;
|
|
}
|
|
|
|
*pfContextAttr = 0;
|
|
if (ctx->req_ctx_attr & ISC_REQ_ALLOCATE_MEMORY)
|
|
*pfContextAttr |= ISC_RET_ALLOCATED_MEMORY;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* InitializeSecurityContextA
|
|
*/
|
|
SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextA(
|
|
PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
|
|
ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
|
|
PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
|
|
PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
|
|
{
|
|
SECURITY_STATUS ret;
|
|
SEC_WCHAR *target_name = NULL;
|
|
|
|
TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
|
|
debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
|
|
Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
|
|
|
|
if (pszTargetName)
|
|
{
|
|
INT len = MultiByteToWideChar(CP_ACP, 0, pszTargetName, -1, NULL, 0);
|
|
target_name = HeapAlloc(GetProcessHeap(), 0, len * sizeof(*target_name));
|
|
MultiByteToWideChar(CP_ACP, 0, pszTargetName, -1, target_name, len);
|
|
}
|
|
|
|
ret = schan_InitializeSecurityContextW(phCredential, phContext, target_name,
|
|
fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
|
|
phNewContext, pOutput, pfContextAttr, ptsExpiry);
|
|
|
|
HeapFree(GetProcessHeap(), 0, target_name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static
|
|
SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesW(
|
|
PCtxtHandle context_handle, ULONG attribute, PVOID buffer)
|
|
{
|
|
struct schan_context *ctx;
|
|
|
|
TRACE("context_handle %p, attribute %#x, buffer %p\n",
|
|
context_handle, attribute, buffer);
|
|
|
|
if (!context_handle) return SEC_E_INVALID_HANDLE;
|
|
ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
|
|
|
|
switch(attribute)
|
|
{
|
|
case SECPKG_ATTR_STREAM_SIZES:
|
|
{
|
|
SecPkgContext_ConnectionInfo info;
|
|
SECURITY_STATUS status = schan_imp_get_connection_info(ctx->session, &info);
|
|
if (status == SEC_E_OK)
|
|
{
|
|
SecPkgContext_StreamSizes *stream_sizes = buffer;
|
|
SIZE_T mac_size = info.dwHashStrength;
|
|
unsigned int block_size = schan_imp_get_session_cipher_block_size(ctx->session);
|
|
unsigned int message_size = schan_imp_get_max_message_size(ctx->session);
|
|
|
|
TRACE("Using %lu mac bytes, message size %u, block size %u\n",
|
|
mac_size, message_size, block_size);
|
|
|
|
/* These are defined by the TLS RFC */
|
|
stream_sizes->cbHeader = 5;
|
|
stream_sizes->cbTrailer = mac_size + 256; /* Max 255 bytes padding + 1 for padding size */
|
|
stream_sizes->cbMaximumMessage = message_size;
|
|
stream_sizes->cbBuffers = 4;
|
|
stream_sizes->cbBlockSize = block_size;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
case SECPKG_ATTR_REMOTE_CERT_CONTEXT:
|
|
{
|
|
PCCERT_CONTEXT *cert = buffer;
|
|
|
|
if (!ctx->cert) {
|
|
HCERTSTORE cert_store;
|
|
SECURITY_STATUS status;
|
|
|
|
cert_store = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0, CERT_STORE_CREATE_NEW_FLAG, NULL);
|
|
if(!cert_store)
|
|
return GetLastError();
|
|
|
|
status = schan_imp_get_session_peer_certificate(ctx->session, cert_store, &ctx->cert);
|
|
CertCloseStore(cert_store, 0);
|
|
if(status != SEC_E_OK)
|
|
return status;
|
|
}
|
|
|
|
*cert = CertDuplicateCertificateContext(ctx->cert);
|
|
return SEC_E_OK;
|
|
}
|
|
case SECPKG_ATTR_CONNECTION_INFO:
|
|
{
|
|
SecPkgContext_ConnectionInfo *info = buffer;
|
|
return schan_imp_get_connection_info(ctx->session, info);
|
|
}
|
|
|
|
default:
|
|
FIXME("Unhandled attribute %#x\n", attribute);
|
|
return SEC_E_UNSUPPORTED_FUNCTION;
|
|
}
|
|
}
|
|
|
|
static
|
|
SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesA(
|
|
PCtxtHandle context_handle, ULONG attribute, PVOID buffer)
|
|
{
|
|
TRACE("context_handle %p, attribute %#x, buffer %p\n",
|
|
context_handle, attribute, buffer);
|
|
|
|
switch(attribute)
|
|
{
|
|
case SECPKG_ATTR_STREAM_SIZES:
|
|
return schan_QueryContextAttributesW(context_handle, attribute, buffer);
|
|
case SECPKG_ATTR_REMOTE_CERT_CONTEXT:
|
|
return schan_QueryContextAttributesW(context_handle, attribute, buffer);
|
|
case SECPKG_ATTR_CONNECTION_INFO:
|
|
return schan_QueryContextAttributesW(context_handle, attribute, buffer);
|
|
|
|
default:
|
|
FIXME("Unhandled attribute %#x\n", attribute);
|
|
return SEC_E_UNSUPPORTED_FUNCTION;
|
|
}
|
|
}
|
|
|
|
static int schan_encrypt_message_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s)
|
|
{
|
|
SecBuffer *b;
|
|
|
|
if (s->current_buffer_idx == -1)
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_STREAM_HEADER);
|
|
|
|
b = &s->desc->pBuffers[s->current_buffer_idx];
|
|
|
|
if (b->BufferType == SECBUFFER_STREAM_HEADER)
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA);
|
|
|
|
if (b->BufferType == SECBUFFER_DATA)
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_STREAM_TRAILER);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int schan_encrypt_message_get_next_buffer_token(const struct schan_transport *t, struct schan_buffers *s)
|
|
{
|
|
SecBuffer *b;
|
|
|
|
if (s->current_buffer_idx == -1)
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
|
|
|
|
b = &s->desc->pBuffers[s->current_buffer_idx];
|
|
|
|
if (b->BufferType == SECBUFFER_TOKEN)
|
|
{
|
|
int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
|
|
if (idx != s->current_buffer_idx) return -1;
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA);
|
|
}
|
|
|
|
if (b->BufferType == SECBUFFER_DATA)
|
|
{
|
|
int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
|
|
if (idx != -1)
|
|
idx = schan_find_sec_buffer_idx(s->desc, idx + 1, SECBUFFER_TOKEN);
|
|
return idx;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static SECURITY_STATUS SEC_ENTRY schan_EncryptMessage(PCtxtHandle context_handle,
|
|
ULONG quality, PSecBufferDesc message, ULONG message_seq_no)
|
|
{
|
|
struct schan_transport transport;
|
|
struct schan_context *ctx;
|
|
struct schan_buffers *b;
|
|
SECURITY_STATUS status;
|
|
SecBuffer *buffer;
|
|
SIZE_T data_size;
|
|
SIZE_T length;
|
|
char *data;
|
|
int idx;
|
|
|
|
TRACE("context_handle %p, quality %d, message %p, message_seq_no %d\n",
|
|
context_handle, quality, message, message_seq_no);
|
|
|
|
if (!context_handle) return SEC_E_INVALID_HANDLE;
|
|
ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
|
|
|
|
dump_buffer_desc(message);
|
|
|
|
idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_DATA);
|
|
if (idx == -1)
|
|
{
|
|
WARN("No data buffer passed\n");
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
buffer = &message->pBuffers[idx];
|
|
|
|
data_size = buffer->cbBuffer;
|
|
data = HeapAlloc(GetProcessHeap(), 0, data_size);
|
|
memcpy(data, buffer->pvBuffer, data_size);
|
|
|
|
transport.ctx = ctx;
|
|
init_schan_buffers(&transport.in, NULL, NULL);
|
|
if (schan_find_sec_buffer_idx(message, 0, SECBUFFER_STREAM_HEADER) != -1)
|
|
init_schan_buffers(&transport.out, message, schan_encrypt_message_get_next_buffer);
|
|
else
|
|
init_schan_buffers(&transport.out, message, schan_encrypt_message_get_next_buffer_token);
|
|
schan_imp_set_session_transport(ctx->session, &transport);
|
|
|
|
length = data_size;
|
|
status = schan_imp_send(ctx->session, data, &length);
|
|
|
|
TRACE("Sent %ld bytes.\n", length);
|
|
|
|
if (length != data_size)
|
|
status = SEC_E_INTERNAL_ERROR;
|
|
|
|
b = &transport.out;
|
|
b->desc->pBuffers[b->current_buffer_idx].cbBuffer = b->offset;
|
|
HeapFree(GetProcessHeap(), 0, data);
|
|
|
|
TRACE("Returning %#x.\n", status);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int schan_decrypt_message_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s)
|
|
{
|
|
if (s->current_buffer_idx == -1)
|
|
return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int schan_validate_decrypt_buffer_desc(PSecBufferDesc message)
|
|
{
|
|
int data_idx = -1;
|
|
unsigned int empty_count = 0;
|
|
unsigned int i;
|
|
|
|
if (message->cBuffers < 4)
|
|
{
|
|
WARN("Less than four buffers passed\n");
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < message->cBuffers; ++i)
|
|
{
|
|
SecBuffer *b = &message->pBuffers[i];
|
|
if (b->BufferType == SECBUFFER_DATA)
|
|
{
|
|
if (data_idx != -1)
|
|
{
|
|
WARN("More than one data buffer passed\n");
|
|
return -1;
|
|
}
|
|
data_idx = i;
|
|
}
|
|
else if (b->BufferType == SECBUFFER_EMPTY)
|
|
++empty_count;
|
|
}
|
|
|
|
if (data_idx == -1)
|
|
{
|
|
WARN("No data buffer passed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (empty_count < 3)
|
|
{
|
|
WARN("Less than three empty buffers passed\n");
|
|
return -1;
|
|
}
|
|
|
|
return data_idx;
|
|
}
|
|
|
|
static void schan_decrypt_fill_buffer(PSecBufferDesc message, ULONG buffer_type, void *data, ULONG size)
|
|
{
|
|
int idx;
|
|
SecBuffer *buffer;
|
|
|
|
idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_EMPTY);
|
|
buffer = &message->pBuffers[idx];
|
|
|
|
buffer->BufferType = buffer_type;
|
|
buffer->pvBuffer = data;
|
|
buffer->cbBuffer = size;
|
|
}
|
|
|
|
static SECURITY_STATUS SEC_ENTRY schan_DecryptMessage(PCtxtHandle context_handle,
|
|
PSecBufferDesc message, ULONG message_seq_no, PULONG quality)
|
|
{
|
|
struct schan_transport transport;
|
|
struct schan_context *ctx;
|
|
SecBuffer *buffer;
|
|
SIZE_T data_size;
|
|
char *data;
|
|
unsigned expected_size;
|
|
SSIZE_T received = 0;
|
|
int idx;
|
|
unsigned char *buf_ptr;
|
|
|
|
TRACE("context_handle %p, message %p, message_seq_no %d, quality %p\n",
|
|
context_handle, message, message_seq_no, quality);
|
|
|
|
if (!context_handle) return SEC_E_INVALID_HANDLE;
|
|
ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
|
|
|
|
dump_buffer_desc(message);
|
|
|
|
idx = schan_validate_decrypt_buffer_desc(message);
|
|
if (idx == -1)
|
|
return SEC_E_INVALID_TOKEN;
|
|
buffer = &message->pBuffers[idx];
|
|
buf_ptr = buffer->pvBuffer;
|
|
|
|
expected_size = 5 + ((buf_ptr[3] << 8) | buf_ptr[4]);
|
|
if(buffer->cbBuffer < expected_size)
|
|
{
|
|
TRACE("Expected %u bytes, but buffer only contains %u bytes\n", expected_size, buffer->cbBuffer);
|
|
buffer->BufferType = SECBUFFER_MISSING;
|
|
buffer->cbBuffer = expected_size - buffer->cbBuffer;
|
|
|
|
/* This is a bit weird, but windows does it too */
|
|
idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_EMPTY);
|
|
buffer = &message->pBuffers[idx];
|
|
buffer->BufferType = SECBUFFER_MISSING;
|
|
buffer->cbBuffer = expected_size - buffer->cbBuffer;
|
|
|
|
TRACE("Returning SEC_E_INCOMPLETE_MESSAGE\n");
|
|
return SEC_E_INCOMPLETE_MESSAGE;
|
|
}
|
|
|
|
data_size = expected_size - 5;
|
|
data = HeapAlloc(GetProcessHeap(), 0, data_size);
|
|
|
|
transport.ctx = ctx;
|
|
init_schan_buffers(&transport.in, message, schan_decrypt_message_get_next_buffer);
|
|
transport.in.limit = expected_size;
|
|
init_schan_buffers(&transport.out, NULL, NULL);
|
|
schan_imp_set_session_transport(ctx->session, &transport);
|
|
|
|
while (received < data_size)
|
|
{
|
|
SIZE_T length = data_size - received;
|
|
SECURITY_STATUS status = schan_imp_recv(ctx->session, data + received, &length);
|
|
|
|
if (status == SEC_I_CONTINUE_NEEDED)
|
|
break;
|
|
|
|
if (status != SEC_E_OK)
|
|
{
|
|
HeapFree(GetProcessHeap(), 0, data);
|
|
ERR("Returning %x\n", status);
|
|
return status;
|
|
}
|
|
|
|
if (!length)
|
|
break;
|
|
|
|
received += length;
|
|
}
|
|
|
|
TRACE("Received %ld bytes\n", received);
|
|
|
|
memcpy(buf_ptr + 5, data, received);
|
|
HeapFree(GetProcessHeap(), 0, data);
|
|
|
|
schan_decrypt_fill_buffer(message, SECBUFFER_DATA,
|
|
buf_ptr + 5, received);
|
|
|
|
schan_decrypt_fill_buffer(message, SECBUFFER_STREAM_TRAILER,
|
|
buf_ptr + 5 + received, buffer->cbBuffer - 5 - received);
|
|
|
|
if(buffer->cbBuffer > expected_size)
|
|
schan_decrypt_fill_buffer(message, SECBUFFER_EXTRA,
|
|
buf_ptr + expected_size, buffer->cbBuffer - expected_size);
|
|
|
|
buffer->BufferType = SECBUFFER_STREAM_HEADER;
|
|
buffer->cbBuffer = 5;
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY schan_DeleteSecurityContext(PCtxtHandle context_handle)
|
|
{
|
|
struct schan_context *ctx;
|
|
|
|
TRACE("context_handle %p\n", context_handle);
|
|
|
|
if (!context_handle) return SEC_E_INVALID_HANDLE;
|
|
|
|
ctx = schan_free_handle(context_handle->dwLower, SCHAN_HANDLE_CTX);
|
|
if (!ctx) return SEC_E_INVALID_HANDLE;
|
|
|
|
if (ctx->cert)
|
|
CertFreeCertificateContext(ctx->cert);
|
|
schan_imp_dispose_session(ctx->session);
|
|
HeapFree(GetProcessHeap(), 0, ctx);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SecurityFunctionTableA schanTableA = {
|
|
1,
|
|
schan_EnumerateSecurityPackagesA,
|
|
schan_QueryCredentialsAttributesA,
|
|
schan_AcquireCredentialsHandleA,
|
|
schan_FreeCredentialsHandle,
|
|
NULL, /* Reserved2 */
|
|
schan_InitializeSecurityContextA,
|
|
NULL, /* AcceptSecurityContext */
|
|
NULL, /* CompleteAuthToken */
|
|
schan_DeleteSecurityContext,
|
|
NULL, /* ApplyControlToken */
|
|
schan_QueryContextAttributesA,
|
|
NULL, /* ImpersonateSecurityContext */
|
|
NULL, /* RevertSecurityContext */
|
|
NULL, /* MakeSignature */
|
|
NULL, /* VerifySignature */
|
|
schan_FreeContextBuffer,
|
|
NULL, /* QuerySecurityPackageInfoA */
|
|
NULL, /* Reserved3 */
|
|
NULL, /* Reserved4 */
|
|
NULL, /* ExportSecurityContext */
|
|
NULL, /* ImportSecurityContextA */
|
|
NULL, /* AddCredentialsA */
|
|
NULL, /* Reserved8 */
|
|
NULL, /* QuerySecurityContextToken */
|
|
schan_EncryptMessage,
|
|
schan_DecryptMessage,
|
|
NULL, /* SetContextAttributesA */
|
|
};
|
|
|
|
SecurityFunctionTableW schanTableW = {
|
|
1,
|
|
schan_EnumerateSecurityPackagesW,
|
|
schan_QueryCredentialsAttributesW,
|
|
schan_AcquireCredentialsHandleW,
|
|
schan_FreeCredentialsHandle,
|
|
NULL, /* Reserved2 */
|
|
schan_InitializeSecurityContextW,
|
|
NULL, /* AcceptSecurityContext */
|
|
NULL, /* CompleteAuthToken */
|
|
schan_DeleteSecurityContext,
|
|
NULL, /* ApplyControlToken */
|
|
schan_QueryContextAttributesW,
|
|
NULL, /* ImpersonateSecurityContext */
|
|
NULL, /* RevertSecurityContext */
|
|
NULL, /* MakeSignature */
|
|
NULL, /* VerifySignature */
|
|
schan_FreeContextBuffer,
|
|
NULL, /* QuerySecurityPackageInfoW */
|
|
NULL, /* Reserved3 */
|
|
NULL, /* Reserved4 */
|
|
NULL, /* ExportSecurityContext */
|
|
NULL, /* ImportSecurityContextW */
|
|
NULL, /* AddCredentialsW */
|
|
NULL, /* Reserved8 */
|
|
NULL, /* QuerySecurityContextToken */
|
|
schan_EncryptMessage,
|
|
schan_DecryptMessage,
|
|
NULL, /* SetContextAttributesW */
|
|
};
|
|
|
|
static const WCHAR schannelComment[] = { 'S','c','h','a','n','n','e','l',' ',
|
|
'S','e','c','u','r','i','t','y',' ','P','a','c','k','a','g','e',0 };
|
|
static const WCHAR schannelDllName[] = { 's','c','h','a','n','n','e','l','.','d','l','l',0 };
|
|
|
|
void SECUR32_initSchannelSP(void)
|
|
{
|
|
/* This is what Windows reports. This shouldn't break any applications
|
|
* even though the functions are missing, because the wrapper will
|
|
* return SEC_E_UNSUPPORTED_FUNCTION if our function is NULL.
|
|
*/
|
|
static const LONG caps =
|
|
SECPKG_FLAG_INTEGRITY |
|
|
SECPKG_FLAG_PRIVACY |
|
|
SECPKG_FLAG_CONNECTION |
|
|
SECPKG_FLAG_MULTI_REQUIRED |
|
|
SECPKG_FLAG_EXTENDED_ERROR |
|
|
SECPKG_FLAG_IMPERSONATION |
|
|
SECPKG_FLAG_ACCEPT_WIN32_NAME |
|
|
SECPKG_FLAG_STREAM;
|
|
static const short version = 1;
|
|
static const LONG maxToken = 16384;
|
|
SEC_WCHAR *uniSPName = (SEC_WCHAR *)UNISP_NAME_W,
|
|
*schannel = (SEC_WCHAR *)SCHANNEL_NAME_W;
|
|
const SecPkgInfoW info[] = {
|
|
{ caps, version, UNISP_RPC_ID, maxToken, uniSPName, uniSPName },
|
|
{ caps, version, UNISP_RPC_ID, maxToken, schannel,
|
|
(SEC_WCHAR *)schannelComment },
|
|
};
|
|
SecureProvider *provider;
|
|
|
|
if (!schan_imp_init())
|
|
return;
|
|
|
|
schan_handle_table = HeapAlloc(GetProcessHeap(), 0, 64 * sizeof(*schan_handle_table));
|
|
if (!schan_handle_table)
|
|
{
|
|
ERR("Failed to allocate schannel handle table.\n");
|
|
goto fail;
|
|
}
|
|
schan_handle_table_size = 64;
|
|
|
|
provider = SECUR32_addProvider(&schanTableA, &schanTableW, schannelDllName);
|
|
if (!provider)
|
|
{
|
|
ERR("Failed to add schannel provider.\n");
|
|
goto fail;
|
|
}
|
|
|
|
SECUR32_addPackages(provider, sizeof(info) / sizeof(info[0]), NULL, info);
|
|
|
|
return;
|
|
|
|
fail:
|
|
HeapFree(GetProcessHeap(), 0, schan_handle_table);
|
|
schan_handle_table = NULL;
|
|
schan_imp_deinit();
|
|
return;
|
|
}
|
|
|
|
void SECUR32_deinitSchannelSP(void)
|
|
{
|
|
SIZE_T i = schan_handle_count;
|
|
|
|
if (!schan_handle_table) return;
|
|
|
|
/* deinitialized sessions first because a pointer to the credentials
|
|
* may be stored for the session. */
|
|
while (i--)
|
|
{
|
|
if (schan_handle_table[i].type == SCHAN_HANDLE_CTX)
|
|
{
|
|
struct schan_context *ctx = schan_free_handle(i, SCHAN_HANDLE_CTX);
|
|
schan_imp_dispose_session(ctx->session);
|
|
HeapFree(GetProcessHeap(), 0, ctx);
|
|
}
|
|
}
|
|
i = schan_handle_count;
|
|
while (i--)
|
|
{
|
|
if (schan_handle_table[i].type != SCHAN_HANDLE_FREE)
|
|
{
|
|
struct schan_credentials *cred;
|
|
cred = schan_free_handle(i, SCHAN_HANDLE_CRED);
|
|
schan_imp_free_certificate_credentials(cred);
|
|
HeapFree(GetProcessHeap(), 0, cred);
|
|
}
|
|
}
|
|
HeapFree(GetProcessHeap(), 0, schan_handle_table);
|
|
schan_imp_deinit();
|
|
}
|
|
|
|
#else /* SONAME_LIBGNUTLS || HAVE_SECURITY_SECURITY_H || SONAME_LIBMBEDTLS */
|
|
|
|
void SECUR32_initSchannelSP(void)
|
|
{
|
|
ERR("TLS library not found, SSL connections will fail\n");
|
|
}
|
|
|
|
void SECUR32_deinitSchannelSP(void) {}
|
|
|
|
#endif /* SONAME_LIBGNUTLS || HAVE_SECURITY_SECURITY_H || SONAME_LIBMBEDTLS */
|