dlls/wbemprox/security.c

   1 /*
   2  * __SystemSecurity implementation
   3  *
   4  * Copyright 2014 Vincent Povirk for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wbemcli.h"
  28 #include "iads.h"
  29
  30 #include "wine/debug.h"
  31 #include "wbemprox_private.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(wbemprox);
  34
  35 static HRESULT to_byte_array( void *data, DWORD size, VARIANT *var )
  36 {
  37     SAFEARRAY *sa;
  38     void *sadata;
  39     HRESULT hr;
  40
  41     if (!(sa = SafeArrayCreateVector( VT_UI1, 0, size ))) return E_OUTOFMEMORY;
  42
  43     hr = SafeArrayAccessData( sa, &sadata );
  44
  45     if (SUCCEEDED(hr))
  46     {
  47         memcpy( sadata, data, size );
  48
  49         SafeArrayUnaccessData( sa );
  50     }
  51     else
  52     {
  53         SafeArrayDestroy( sa );
  54         return hr;
  55     }
  56
  57     set_variant( VT_UI1|VT_ARRAY, 0, sa, var );
  58     return S_OK;
  59 }
  60
  61 static HRESULT get_sd( SECURITY_DESCRIPTOR **sd, DWORD *size )
  62 {
  63     BYTE sid_admin_buffer[SECURITY_MAX_SID_SIZE];
  64     SID *sid_admin = (SID*)sid_admin_buffer;
  65     BYTE sid_network_buffer[SECURITY_MAX_SID_SIZE];
  66     SID *sid_network = (SID*)sid_network_buffer;
  67     BYTE sid_local_buffer[SECURITY_MAX_SID_SIZE];
  68     SID *sid_local = (SID*)sid_local_buffer;
  69     BYTE sid_users_buffer[SECURITY_MAX_SID_SIZE];
  70     SID *sid_users = (SID*)sid_users_buffer;
  71     BYTE acl_buffer[sizeof(ACL) + 4 * (sizeof(ACCESS_ALLOWED_ACE) - sizeof(DWORD) + SECURITY_MAX_SID_SIZE)];
  72     ACL *acl = (ACL*)acl_buffer;
  73     DWORD sid_size;
  74     SECURITY_DESCRIPTOR absolute_sd;
  75     HRESULT hr = S_OK;
  76
  77     sid_size = sizeof(sid_admin_buffer);
  78     CreateWellKnownSid( WinBuiltinAdministratorsSid, NULL, sid_admin, &sid_size );
  79
  80     sid_size = sizeof(sid_network_buffer);
  81     CreateWellKnownSid( WinNetworkServiceSid, NULL, sid_network, &sid_size );
  82
  83     sid_size = sizeof(sid_local_buffer);
  84     CreateWellKnownSid( WinLocalServiceSid, NULL, sid_local, &sid_size );
  85
  86     sid_size = sizeof(sid_users_buffer);
  87     CreateWellKnownSid( WinAuthenticatedUserSid, NULL, sid_users, &sid_size );
  88
  89     InitializeAcl( acl, sizeof(acl_buffer), ACL_REVISION );
  90
  91     AddAccessAllowedAceEx( acl, ACL_REVISION, CONTAINER_INHERIT_ACE|INHERITED_ACE,
  92         ADS_RIGHT_DS_CREATE_CHILD|ADS_RIGHT_DS_DELETE_CHILD|ADS_RIGHT_ACTRL_DS_LIST|ADS_RIGHT_DS_SELF|
  93         ADS_RIGHT_DS_READ_PROP|ADS_RIGHT_DS_WRITE_PROP|READ_CONTROL|WRITE_DAC,
  94         sid_admin );
  95
  96     AddAccessAllowedAceEx( acl, ACL_REVISION, CONTAINER_INHERIT_ACE|INHERITED_ACE,
  97         ADS_RIGHT_DS_CREATE_CHILD|ADS_RIGHT_DS_DELETE_CHILD|ADS_RIGHT_DS_READ_PROP,
  98         sid_network );
  99
 100     AddAccessAllowedAceEx( acl, ACL_REVISION, CONTAINER_INHERIT_ACE|INHERITED_ACE,
 101         ADS_RIGHT_DS_CREATE_CHILD|ADS_RIGHT_DS_DELETE_CHILD|ADS_RIGHT_DS_READ_PROP,
 102         sid_local );
 103
 104     AddAccessAllowedAceEx( acl, ACL_REVISION, CONTAINER_INHERIT_ACE|INHERITED_ACE,
 105         ADS_RIGHT_DS_CREATE_CHILD|ADS_RIGHT_DS_DELETE_CHILD|ADS_RIGHT_DS_READ_PROP,
 106         sid_users );
 107
 108     InitializeSecurityDescriptor( &absolute_sd, SECURITY_DESCRIPTOR_REVISION );
 109
 110     SetSecurityDescriptorOwner( &absolute_sd, sid_admin, TRUE );
 111     SetSecurityDescriptorGroup( &absolute_sd, sid_admin, TRUE );
 112     SetSecurityDescriptorDacl( &absolute_sd, TRUE, acl, TRUE );
 113
 114     *size = GetSecurityDescriptorLength( &absolute_sd );
 115
 116     *sd = HeapAlloc( GetProcessHeap(), 0, *size );
 117     if (!*sd)
 118         hr = E_OUTOFMEMORY;
 119
 120     if (SUCCEEDED(hr))
 121     {
 122         if (!MakeSelfRelativeSD(&absolute_sd, *sd, size))
 123         {
 124             HeapFree( GetProcessHeap(), 0, *sd );
 125             *sd = NULL;
 126             hr = E_FAIL;
 127         }
 128     }
 129
 130     return hr;
 131 }
 132
 133 HRESULT security_get_sd( IWbemClassObject *obj, IWbemContext *context, IWbemClassObject *in, IWbemClassObject **out )
 134 {
 135     VARIANT var_sd, retval;
 136     IWbemClassObject *sig, *out_params = NULL;
 137     HRESULT hr, ret;
 138     SECURITY_DESCRIPTOR *sd;
 139     DWORD sd_size;
 140
 141     TRACE("%p, %p, %p, %p\n", obj, context, in, out);
 142
 143     hr = create_signature( L"__SystemSecurity", L"GetSD", PARAM_OUT, &sig );
 144
 145     if (SUCCEEDED(hr))
 146     {
 147         hr = IWbemClassObject_SpawnInstance( sig, 0, &out_params );
 148
 149         IWbemClassObject_Release( sig );
 150     }
 151
 152     if (SUCCEEDED(hr))
 153     {
 154         ret = get_sd( &sd, &sd_size );
 155
 156         if (SUCCEEDED(ret))
 157         {
 158             VariantInit( &var_sd );
 159
 160             hr = to_byte_array( sd, sd_size, &var_sd );
 161
 162             if (SUCCEEDED(hr))
 163                 hr = IWbemClassObject_Put( out_params, L"SD", 0, &var_sd, CIM_UINT8|CIM_FLAG_ARRAY );
 164
 165             HeapFree( GetProcessHeap(), 0, sd );
 166             VariantClear( &var_sd );
 167         }
 168
 169         if (SUCCEEDED(hr))
 170         {
 171             set_variant( VT_UI4, ret, NULL, &retval );
 172             hr = IWbemClassObject_Put( out_params, L"ReturnValue", 0, &retval, CIM_UINT32 );
 173         }
 174
 175         if (SUCCEEDED(hr) && out)
 176         {
 177             *out = out_params;
 178             IWbemClassObject_AddRef( out_params );
 179         }
 180
 181         IWbemClassObject_Release( out_params );
 182     }
 183
 184     return hr;
 185 }
 186
 187
 188 HRESULT security_set_sd( IWbemClassObject *obj, IWbemContext *context, IWbemClassObject *in, IWbemClassObject **out )
 189 {
 190     VARIANT retval;
 191     IWbemClassObject *sig, *out_params = NULL;
 192     HRESULT hr;
 193
 194     FIXME("stub\n");
 195
 196     hr = create_signature( L"__SystemSecurity", L"SetSD", PARAM_OUT, &sig );
 197
 198     if (SUCCEEDED(hr))
 199     {
 200         hr = IWbemClassObject_SpawnInstance( sig, 0, &out_params );
 201
 202         IWbemClassObject_Release( sig );
 203     }
 204
 205     if (SUCCEEDED(hr))
 206     {
 207         set_variant( VT_UI4, S_OK, NULL, &retval );
 208         hr = IWbemClassObject_Put( out_params, L"ReturnValue", 0, &retval, CIM_UINT32 );
 209
 210         if (SUCCEEDED(hr) && out)
 211         {
 212             *out = out_params;
 213             IWbemClassObject_AddRef( out_params );
 214         }
 215
 216         IWbemClassObject_Release( out_params );
 217     }
 218
 219     return hr;
 220 }