dlls/wbemprox/class.c

   1 /*
   2  * Copyright 2012 Hans Leidekker for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #define COBJMACROS
  20
  21 #include "config.h"
  22 #include <stdarg.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "objbase.h"
  27 #include "wbemcli.h"
  28
  29 #include "wine/debug.h"
  30 #include "wbemprox_private.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(wbemprox);
  33
  34 struct enum_class_object
  35 {
  36     IEnumWbemClassObject IEnumWbemClassObject_iface;
  37     LONG refs;
  38     struct query *query;
  39     UINT index;
  40 };
  41
  42 static inline struct enum_class_object *impl_from_IEnumWbemClassObject(
  43     IEnumWbemClassObject *iface )
  44 {
  45     return CONTAINING_RECORD(iface, struct enum_class_object, IEnumWbemClassObject_iface);
  46 }
  47
  48 static ULONG WINAPI enum_class_object_AddRef(
  49     IEnumWbemClassObject *iface )
  50 {
  51     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
  52     return InterlockedIncrement( &ec->refs );
  53 }
  54
  55 static ULONG WINAPI enum_class_object_Release(
  56     IEnumWbemClassObject *iface )
  57 {
  58     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
  59     LONG refs = InterlockedDecrement( &ec->refs );
  60     if (!refs)
  61     {
  62         TRACE("destroying %p\n", ec);
  63         release_query( ec->query );
  64         heap_free( ec );
  65     }
  66     return refs;
  67 }
  68
  69 static HRESULT WINAPI enum_class_object_QueryInterface(
  70     IEnumWbemClassObject *iface,
  71     REFIID riid,
  72     void **ppvObject )
  73 {
  74     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
  75
  76     TRACE("%p, %s, %p\n", ec, debugstr_guid( riid ), ppvObject );
  77
  78     if ( IsEqualGUID( riid, &IID_IEnumWbemClassObject ) ||
  79          IsEqualGUID( riid, &IID_IUnknown ) )
  80     {
  81         *ppvObject = ec;
  82     }
  83     else if ( IsEqualGUID( riid, &IID_IClientSecurity ) )
  84     {
  85         *ppvObject = &client_security;
  86         return S_OK;
  87     }
  88     else
  89     {
  90         FIXME("interface %s not implemented\n", debugstr_guid(riid));
  91         return E_NOINTERFACE;
  92     }
  93     IEnumWbemClassObject_AddRef( iface );
  94     return S_OK;
  95 }
  96
  97 static HRESULT WINAPI enum_class_object_Reset(
  98     IEnumWbemClassObject *iface )
  99 {
 100     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
 101
 102     TRACE("%p\n", iface);
 103
 104     ec->index = 0;
 105     return WBEM_S_NO_ERROR;
 106 }
 107
 108 static HRESULT WINAPI enum_class_object_Next(
 109     IEnumWbemClassObject *iface,
 110     LONG lTimeout,
 111     ULONG uCount,
 112     IWbemClassObject **apObjects,
 113     ULONG *puReturned )
 114 {
 115     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
 116     struct view *view = ec->query->view;
 117     HRESULT hr;
 118
 119     TRACE("%p, %d, %u, %p, %p\n", iface, lTimeout, uCount, apObjects, puReturned);
 120
 121     if (!uCount) return WBEM_S_FALSE;
 122     if (!apObjects || !puReturned) return WBEM_E_INVALID_PARAMETER;
 123     if (lTimeout != WBEM_INFINITE) FIXME("timeout not supported\n");
 124
 125     *puReturned = 0;
 126     if (ec->index + uCount > view->count) return WBEM_S_FALSE;
 127
 128     hr = create_class_object( view->table->name, iface, ec->index, NULL, apObjects );
 129     if (hr != S_OK) return hr;
 130
 131     ec->index++;
 132     *puReturned = 1;
 133     if (ec->index == view->count) return WBEM_S_FALSE;
 134     if (uCount > 1) return WBEM_S_TIMEDOUT;
 135     return WBEM_S_NO_ERROR;
 136 }
 137
 138 static HRESULT WINAPI enum_class_object_NextAsync(
 139     IEnumWbemClassObject *iface,
 140     ULONG uCount,
 141     IWbemObjectSink *pSink )
 142 {
 143     FIXME("%p, %u, %p\n", iface, uCount, pSink);
 144     return E_NOTIMPL;
 145 }
 146
 147 static HRESULT WINAPI enum_class_object_Clone(
 148     IEnumWbemClassObject *iface,
 149     IEnumWbemClassObject **ppEnum )
 150 {
 151     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
 152
 153     TRACE("%p, %p\n", iface, ppEnum);
 154
 155     return EnumWbemClassObject_create( NULL, ec->query, (void **)ppEnum );
 156 }
 157
 158 static HRESULT WINAPI enum_class_object_Skip(
 159     IEnumWbemClassObject *iface,
 160     LONG lTimeout,
 161     ULONG nCount )
 162 {
 163     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( iface );
 164     struct view *view = ec->query->view;
 165
 166     TRACE("%p, %d, %u\n", iface, lTimeout, nCount);
 167
 168     if (lTimeout != WBEM_INFINITE) FIXME("timeout not supported\n");
 169
 170     if (!view->count) return WBEM_S_FALSE;
 171
 172     if (nCount > view->count - ec->index)
 173     {
 174         ec->index = view->count - 1;
 175         return WBEM_S_FALSE;
 176     }
 177     ec->index += nCount;
 178     return WBEM_S_NO_ERROR;
 179 }
 180
 181 static const IEnumWbemClassObjectVtbl enum_class_object_vtbl =
 182 {
 183     enum_class_object_QueryInterface,
 184     enum_class_object_AddRef,
 185     enum_class_object_Release,
 186     enum_class_object_Reset,
 187     enum_class_object_Next,
 188     enum_class_object_NextAsync,
 189     enum_class_object_Clone,
 190     enum_class_object_Skip
 191 };
 192
 193 HRESULT EnumWbemClassObject_create(
 194     IUnknown *pUnkOuter, struct query *query, LPVOID *ppObj )
 195 {
 196     struct enum_class_object *ec;
 197
 198     TRACE("%p, %p\n", pUnkOuter, ppObj);
 199
 200     ec = heap_alloc( sizeof(*ec) );
 201     if (!ec) return E_OUTOFMEMORY;
 202
 203     ec->IEnumWbemClassObject_iface.lpVtbl = &enum_class_object_vtbl;
 204     ec->refs  = 1;
 205     ec->query = query;
 206     addref_query( query );
 207     ec->index = 0;
 208
 209     *ppObj = &ec->IEnumWbemClassObject_iface;
 210
 211     TRACE("returning iface %p\n", *ppObj);
 212     return S_OK;
 213 }
 214
 215 static struct record *create_record( const struct column *columns, UINT num_cols )
 216 {
 217     UINT i;
 218     struct record *record;
 219
 220     if (!(record = heap_alloc( sizeof(struct record) ))) return NULL;
 221     if (!(record->fields = heap_alloc( num_cols * sizeof(struct field) )))
 222     {
 223         heap_free( record );
 224         return NULL;
 225     }
 226     for (i = 0; i < num_cols; i++)
 227     {
 228         record->fields[i].type   = columns[i].type;
 229         record->fields[i].u.ival = 0;
 230     }
 231     record->count = num_cols;
 232     return record;
 233 }
 234
 235 static void destroy_record( struct record *record )
 236 {
 237     UINT i;
 238
 239     if (!record) return;
 240     for (i = 0; i < record->count; i++)
 241     {
 242         if (record->fields[i].type == CIM_STRING || record->fields[i].type == CIM_DATETIME)
 243             heap_free( record->fields[i].u.sval );
 244     }
 245     heap_free( record->fields );
 246     heap_free( record );
 247 }
 248
 249 struct class_object
 250 {
 251     IWbemClassObject IWbemClassObject_iface;
 252     LONG refs;
 253     WCHAR *name;
 254     IEnumWbemClassObject *iter;
 255     UINT index;
 256     UINT index_method;
 257     UINT index_property;
 258     struct record *record; /* uncommitted instance */
 259 };
 260
 261 static inline struct class_object *impl_from_IWbemClassObject(
 262     IWbemClassObject *iface )
 263 {
 264     return CONTAINING_RECORD(iface, struct class_object, IWbemClassObject_iface);
 265 }
 266
 267 static ULONG WINAPI class_object_AddRef(
 268     IWbemClassObject *iface )
 269 {
 270     struct class_object *co = impl_from_IWbemClassObject( iface );
 271     return InterlockedIncrement( &co->refs );
 272 }
 273
 274 static ULONG WINAPI class_object_Release(
 275     IWbemClassObject *iface )
 276 {
 277     struct class_object *co = impl_from_IWbemClassObject( iface );
 278     LONG refs = InterlockedDecrement( &co->refs );
 279     if (!refs)
 280     {
 281         TRACE("destroying %p\n", co);
 282         if (co->iter) IEnumWbemClassObject_Release( co->iter );
 283         destroy_record( co->record );
 284         heap_free( co->name );
 285         heap_free( co );
 286     }
 287     return refs;
 288 }
 289
 290 static HRESULT WINAPI class_object_QueryInterface(
 291     IWbemClassObject *iface,
 292     REFIID riid,
 293     void **ppvObject )
 294 {
 295     struct class_object *co = impl_from_IWbemClassObject( iface );
 296
 297     TRACE("%p, %s, %p\n", co, debugstr_guid( riid ), ppvObject );
 298
 299     if ( IsEqualGUID( riid, &IID_IWbemClassObject ) ||
 300          IsEqualGUID( riid, &IID_IUnknown ) )
 301     {
 302         *ppvObject = co;
 303     }
 304     else if (IsEqualGUID( riid, &IID_IClientSecurity ))
 305     {
 306         *ppvObject = &client_security;
 307         return S_OK;
 308     }
 309     else
 310     {
 311         FIXME("interface %s not implemented\n", debugstr_guid(riid));
 312         return E_NOINTERFACE;
 313     }
 314     IWbemClassObject_AddRef( iface );
 315     return S_OK;
 316 }
 317
 318 static HRESULT WINAPI class_object_GetQualifierSet(
 319     IWbemClassObject *iface,
 320     IWbemQualifierSet **ppQualSet )
 321 {
 322     FIXME("%p, %p\n", iface, ppQualSet);
 323     return E_NOTIMPL;
 324 }
 325
 326 static HRESULT WINAPI class_object_Get(
 327     IWbemClassObject *iface,
 328     LPCWSTR wszName,
 329     LONG lFlags,
 330     VARIANT *pVal,
 331     CIMTYPE *pType,
 332     LONG *plFlavor )
 333 {
 334     struct class_object *co = impl_from_IWbemClassObject( iface );
 335     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( co->iter );
 336     struct view *view = ec->query->view;
 337
 338     TRACE("%p, %s, %08x, %p, %p, %p\n", iface, debugstr_w(wszName), lFlags, pVal, pType, plFlavor);
 339
 340     return get_propval( view, co->index, wszName, pVal, pType, plFlavor );
 341 }
 342
 343 static HRESULT record_set_value( struct record *record, UINT index, VARIANT *var )
 344 {
 345     LONGLONG val;
 346     CIMTYPE type;
 347     HRESULT hr;
 348
 349     if ((hr = variant_to_longlong( var, &val, &type )) != S_OK) return hr;
 350     if (type != record->fields[index].type) return WBEM_E_TYPE_MISMATCH;
 351
 352     switch (type)
 353     {
 354     case CIM_STRING:
 355     case CIM_DATETIME:
 356         record->fields[index].u.sval = (WCHAR *)(INT_PTR)val;
 357         return S_OK;
 358     case CIM_SINT16:
 359     case CIM_UINT16:
 360     case CIM_SINT32:
 361     case CIM_UINT32:
 362         record->fields[index].u.ival = val;
 363         return S_OK;
 364     default:
 365         FIXME("unhandled type %u\n", type);
 366         break;
 367     }
 368     return WBEM_E_INVALID_PARAMETER;
 369 }
 370
 371 static HRESULT WINAPI class_object_Put(
 372     IWbemClassObject *iface,
 373     LPCWSTR wszName,
 374     LONG lFlags,
 375     VARIANT *pVal,
 376     CIMTYPE Type )
 377 {
 378     struct class_object *co = impl_from_IWbemClassObject( iface );
 379     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( co->iter );
 380
 381     TRACE("%p, %s, %08x, %p, %u\n", iface, debugstr_w(wszName), lFlags, pVal, Type);
 382
 383     if (co->record)
 384     {
 385         struct table *table = get_table( co->name );
 386         UINT index;
 387         HRESULT hr;
 388
 389         if ((hr = get_column_index( table, wszName, &index )) != S_OK) return hr;
 390         return record_set_value( co->record, index, pVal );
 391     }
 392     return put_propval( ec->query->view, co->index, wszName, pVal, Type );
 393 }
 394
 395 static HRESULT WINAPI class_object_Delete(
 396     IWbemClassObject *iface,
 397     LPCWSTR wszName )
 398 {
 399     FIXME("%p, %s\n", iface, debugstr_w(wszName));
 400     return E_NOTIMPL;
 401 }
 402
 403 static HRESULT WINAPI class_object_GetNames(
 404     IWbemClassObject *iface,
 405     LPCWSTR wszQualifierName,
 406     LONG lFlags,
 407     VARIANT *pQualifierVal,
 408     SAFEARRAY **pNames )
 409 {
 410     struct class_object *co = impl_from_IWbemClassObject( iface );
 411     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( co->iter );
 412
 413     TRACE("%p, %s, %08x, %p, %p\n", iface, debugstr_w(wszQualifierName), lFlags, pQualifierVal, pNames);
 414
 415     if (wszQualifierName || pQualifierVal)
 416     {
 417         FIXME("qualifier not supported\n");
 418         return E_NOTIMPL;
 419     }
 420     if (lFlags != WBEM_FLAG_ALWAYS)
 421     {
 422         FIXME("flags %08x not supported\n", lFlags);
 423         return E_NOTIMPL;
 424     }
 425     return get_properties( ec->query->view, pNames );
 426 }
 427
 428 static HRESULT WINAPI class_object_BeginEnumeration(
 429     IWbemClassObject *iface,
 430     LONG lEnumFlags )
 431 {
 432     struct class_object *co = impl_from_IWbemClassObject( iface );
 433
 434     TRACE("%p, %08x\n", iface, lEnumFlags);
 435
 436     if (lEnumFlags) FIXME("flags 0x%08x not supported\n", lEnumFlags);
 437
 438     co->index_property = 0;
 439     return S_OK;
 440 }
 441
 442 static HRESULT WINAPI class_object_Next(
 443     IWbemClassObject *iface,
 444     LONG lFlags,
 445     BSTR *strName,
 446     VARIANT *pVal,
 447     CIMTYPE *pType,
 448     LONG *plFlavor )
 449 {
 450     struct class_object *co = impl_from_IWbemClassObject( iface );
 451     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( co->iter );
 452     struct view *view = ec->query->view;
 453     const WCHAR *property;
 454     HRESULT hr;
 455
 456     TRACE("%p, %08x, %p, %p, %p, %p\n", iface, lFlags, strName, pVal, pType, plFlavor);
 457
 458     if (!(property = get_property_name( co->name, co->index_property ))) return WBEM_S_NO_MORE_DATA;
 459     if (!(*strName = SysAllocString( property ))) return E_OUTOFMEMORY;
 460     if ((hr = get_propval( view, co->index, property, pVal, pType, plFlavor ) != S_OK))
 461     {
 462         SysFreeString( *strName );
 463         return hr;
 464     }
 465     co->index_property++;
 466     return S_OK;
 467 }
 468
 469 static HRESULT WINAPI class_object_EndEnumeration(
 470     IWbemClassObject *iface )
 471 {
 472     struct class_object *co = impl_from_IWbemClassObject( iface );
 473
 474     TRACE("%p\n", iface);
 475
 476     co->index_property = 0;
 477     return S_OK;
 478 }
 479
 480 static HRESULT WINAPI class_object_GetPropertyQualifierSet(
 481     IWbemClassObject *iface,
 482     LPCWSTR wszProperty,
 483     IWbemQualifierSet **ppQualSet )
 484 {
 485     FIXME("%p, %s, %p\n", iface, debugstr_w(wszProperty), ppQualSet);
 486     return E_NOTIMPL;
 487 }
 488
 489 static HRESULT WINAPI class_object_Clone(
 490     IWbemClassObject *iface,
 491     IWbemClassObject **ppCopy )
 492 {
 493     FIXME("%p, %p\n", iface, ppCopy);
 494     return E_NOTIMPL;
 495 }
 496
 497 static BSTR get_body_text( const struct table *table, UINT row, UINT *len )
 498 {
 499     static const WCHAR fmtW[] = {'\n','\t','%','s',' ','=',' ','%','s',';',0};
 500     BSTR value, ret;
 501     WCHAR *p;
 502     UINT i;
 503
 504     *len = 0;
 505     for (i = 0; i < table->num_cols; i++)
 506     {
 507         *len += sizeof(fmtW) / sizeof(fmtW[0]);
 508         *len += strlenW( table->columns[i].name );
 509         value = get_value_bstr( table, row, i );
 510         *len += SysStringLen( value );
 511         SysFreeString( value );
 512     }
 513     if (!(ret = SysAllocStringLen( NULL, *len ))) return NULL;
 514     p = ret;
 515     for (i = 0; i < table->num_cols; i++)
 516     {
 517         value = get_value_bstr( table, row, i );
 518         p += sprintfW( p, fmtW, table->columns[i].name, value );
 519         SysFreeString( value );
 520     }
 521     return ret;
 522 }
 523
 524 static BSTR get_object_text( const struct view *view, UINT index )
 525 {
 526     static const WCHAR fmtW[] =
 527         {'\n','i','n','s','t','a','n','c','e',' ','o','f',' ','%','s','\n','{','%','s','\n','}',';',0};
 528     UINT len, len_body, row = view->result[index];
 529     BSTR ret, body;
 530
 531     len = sizeof(fmtW) / sizeof(fmtW[0]);
 532     len += strlenW( view->table->name );
 533     if (!(body = get_body_text( view->table, row, &len_body ))) return NULL;
 534     len += len_body;
 535
 536     if (!(ret = SysAllocStringLen( NULL, len ))) return NULL;
 537     sprintfW( ret, fmtW, view->table->name, body );
 538     SysFreeString( body );
 539     return ret;
 540 }
 541
 542 static HRESULT WINAPI class_object_GetObjectText(
 543     IWbemClassObject *iface,
 544     LONG lFlags,
 545     BSTR *pstrObjectText )
 546 {
 547     struct class_object *co = impl_from_IWbemClassObject( iface );
 548     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( co->iter );
 549     struct view *view = ec->query->view;
 550     BSTR text;
 551
 552     TRACE("%p, %08x, %p\n", iface, lFlags, pstrObjectText);
 553
 554     if (lFlags) FIXME("flags %08x not implemented\n", lFlags);
 555
 556     if (!(text = get_object_text( view, co->index ))) return E_OUTOFMEMORY;
 557     *pstrObjectText = text;
 558     return S_OK;
 559 }
 560
 561 static HRESULT WINAPI class_object_SpawnDerivedClass(
 562     IWbemClassObject *iface,
 563     LONG lFlags,
 564     IWbemClassObject **ppNewClass )
 565 {
 566     FIXME("%p, %08x, %p\n", iface, lFlags, ppNewClass);
 567     return E_NOTIMPL;
 568 }
 569
 570 static HRESULT WINAPI class_object_SpawnInstance(
 571     IWbemClassObject *iface,
 572     LONG lFlags,
 573     IWbemClassObject **ppNewInstance )
 574 {
 575     struct class_object *co = impl_from_IWbemClassObject( iface );
 576     struct enum_class_object *ec = impl_from_IEnumWbemClassObject( co->iter );
 577     struct view *view = ec->query->view;
 578     struct record *record;
 579
 580     TRACE("%p, %08x, %p\n", iface, lFlags, ppNewInstance);
 581
 582     if (!(record = create_record( view->table->columns, view->table->num_cols )))
 583         return E_OUTOFMEMORY;
 584
 585     return create_class_object( co->name, NULL, 0, record, ppNewInstance );
 586 }
 587
 588 static HRESULT WINAPI class_object_CompareTo(
 589     IWbemClassObject *iface,
 590     LONG lFlags,
 591     IWbemClassObject *pCompareTo )
 592 {
 593     FIXME("%p, %08x, %p\n", iface, lFlags, pCompareTo);
 594     return E_NOTIMPL;
 595 }
 596
 597 static HRESULT WINAPI class_object_GetPropertyOrigin(
 598     IWbemClassObject *iface,
 599     LPCWSTR wszName,
 600     BSTR *pstrClassName )
 601 {
 602     FIXME("%p, %s, %p\n", iface, debugstr_w(wszName), pstrClassName);
 603     return E_NOTIMPL;
 604 }
 605
 606 static HRESULT WINAPI class_object_InheritsFrom(
 607     IWbemClassObject *iface,
 608     LPCWSTR strAncestor )
 609 {
 610     FIXME("%p, %s\n", iface, debugstr_w(strAncestor));
 611     return E_NOTIMPL;
 612 }
 613
 614 static UINT count_instances( IEnumWbemClassObject *iter )
 615 {
 616     UINT count = 0;
 617     while (!IEnumWbemClassObject_Skip( iter, WBEM_INFINITE, 1 )) count++;
 618     IEnumWbemClassObject_Reset( iter );
 619     return count;
 620 }
 621
 622 static void set_default_value( CIMTYPE type, UINT val, BYTE *ptr )
 623 {
 624     switch (type)
 625     {
 626     case CIM_SINT16:
 627         *(INT16 *)ptr = val;
 628         break;
 629     case CIM_UINT16:
 630         *(UINT16 *)ptr = val;
 631         break;
 632     case CIM_SINT32:
 633         *(INT32 *)ptr = val;
 634         break;
 635     case CIM_UINT32:
 636         *(UINT32 *)ptr = val;
 637         break;
 638     default:
 639         FIXME("unhandled type %u\n", type);
 640         break;
 641     }
 642 }
 643
 644 static HRESULT create_signature_columns_and_data( IEnumWbemClassObject *iter, UINT *num_cols,
 645                                            struct column **cols, BYTE **data )
 646 {
 647     static const WCHAR parameterW[] = {'P','a','r','a','m','e','t','e','r',0};
 648     static const WCHAR typeW[] = {'T','y','p','e',0};
 649     static const WCHAR defaultvalueW[] = {'D','e','f','a','u','l','t','V','a','l','u','e',0};
 650     struct column *columns;
 651     BYTE *row;
 652     IWbemClassObject *param;
 653     VARIANT val;
 654     HRESULT hr = E_OUTOFMEMORY;
 655     UINT offset = 0;
 656     ULONG count;
 657     int i = 0;
 658
 659     count = count_instances( iter );
 660     if (!(columns = heap_alloc( count * sizeof(struct column) ))) return E_OUTOFMEMORY;
 661     if (!(row = heap_alloc_zero( count * sizeof(LONGLONG) ))) goto error;
 662
 663     for (;;)
 664     {
 665         IEnumWbemClassObject_Next( iter, WBEM_INFINITE, 1, &param, &count );
 666         if (!count) break;
 667
 668         hr = IWbemClassObject_Get( param, parameterW, 0, &val, NULL, NULL );
 669         if (hr != S_OK) goto error;
 670         columns[i].name = heap_strdupW( V_BSTR( &val ) );
 671         VariantClear( &val );
 672
 673         hr = IWbemClassObject_Get( param, typeW, 0, &val, NULL, NULL );
 674         if (hr != S_OK) goto error;
 675         columns[i].type    = V_UI4( &val );
 676         columns[i].vartype = 0;
 677
 678         hr = IWbemClassObject_Get( param, defaultvalueW, 0, &val, NULL, NULL );
 679         if (hr != S_OK) goto error;
 680         if (V_UI4( &val )) set_default_value( columns[i].type, V_UI4( &val ), row + offset );
 681         offset += get_type_size( columns[i].type );
 682
 683         IWbemClassObject_Release( param );
 684         i++;
 685     }
 686     *num_cols = i;
 687     *cols = columns;
 688     *data = row;
 689     return S_OK;
 690
 691 error:
 692     for (; i >= 0; i--) heap_free( (WCHAR *)columns[i].name );
 693     heap_free( columns );
 694     heap_free( row );
 695     return hr;
 696 }
 697
 698 static HRESULT create_signature_table( IEnumWbemClassObject *iter, WCHAR *name )
 699 {
 700     HRESULT hr;
 701     struct table *table;
 702     struct column *columns;
 703     UINT num_cols;
 704     BYTE *row;
 705
 706     hr = create_signature_columns_and_data( iter, &num_cols, &columns, &row );
 707     if (hr != S_OK) return hr;
 708
 709     if (!(table = create_table( name, num_cols, columns, 1, row, NULL )))
 710     {
 711         free_columns( columns, num_cols );
 712         heap_free( row );
 713         return E_OUTOFMEMORY;
 714     }
 715     if (!add_table( table )) free_table( table ); /* already exists */
 716     return S_OK;
 717 }
 718
 719 static WCHAR *build_signature_table_name( const WCHAR *class, const WCHAR *method, enum param_direction dir )
 720 {
 721     static const WCHAR fmtW[] = {'_','_','%','s','_','%','s','_','%','s',0};
 722     static const WCHAR outW[] = {'O','U','T',0};
 723     static const WCHAR inW[] = {'I','N',0};
 724     UINT len = SIZEOF(fmtW) + SIZEOF(outW) + strlenW( class ) + strlenW( method );
 725     WCHAR *ret;
 726
 727     if (!(ret = heap_alloc( len * sizeof(WCHAR) ))) return NULL;
 728     sprintfW( ret, fmtW, class, method, dir == PARAM_IN ? inW : outW );
 729     return struprW( ret );
 730 }
 731
 732 static HRESULT create_signature( const WCHAR *class, const WCHAR *method, enum param_direction dir,
 733                                  IWbemClassObject **sig )
 734 {
 735     static const WCHAR selectW[] =
 736         {'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
 737          '_','_','P','A','R','A','M','E','T','E','R','S',' ','W','H','E','R','E',' ',
 738          'C','l','a','s','s','=','\'','%','s','\'',' ','A','N','D',' ',
 739          'M','e','t','h','o','d','=','\'','%','s','\'',' ','A','N','D',' ',
 740          'D','i','r','e','c','t','i','o','n','%','s',0};
 741     static const WCHAR geW[] = {'>','=','0',0};
 742     static const WCHAR leW[] = {'<','=','0',0};
 743     UINT len = SIZEOF(selectW) + SIZEOF(geW);
 744     IEnumWbemClassObject *iter;
 745     WCHAR *query, *name;
 746     HRESULT hr;
 747
 748     len += strlenW( class ) + strlenW( method );
 749     if (!(query = heap_alloc( len * sizeof(WCHAR) ))) return E_OUTOFMEMORY;
 750     sprintfW( query, selectW, class, method, dir >= 0 ? geW : leW );
 751
 752     hr = exec_query( query, &iter );
 753     heap_free( query );
 754     if (hr != S_OK) return hr;
 755
 756     if (!(name = build_signature_table_name( class, method, dir )))
 757     {
 758         IEnumWbemClassObject_Release( iter );
 759         return E_OUTOFMEMORY;
 760     }
 761     hr = create_signature_table( iter, name );
 762     IEnumWbemClassObject_Release( iter );
 763     if (hr != S_OK)
 764     {
 765         heap_free( name );
 766         return hr;
 767     }
 768     return get_object( name, sig );
 769 }
 770
 771 static HRESULT WINAPI class_object_GetMethod(
 772     IWbemClassObject *iface,
 773     LPCWSTR wszName,
 774     LONG lFlags,
 775     IWbemClassObject **ppInSignature,
 776     IWbemClassObject **ppOutSignature )
 777 {
 778     struct class_object *co = impl_from_IWbemClassObject( iface );
 779     HRESULT hr;
 780
 781     TRACE("%p, %s, %08x, %p, %p\n", iface, debugstr_w(wszName), lFlags, ppInSignature, ppOutSignature);
 782
 783     hr = create_signature( co->name, wszName, PARAM_IN, ppInSignature );
 784     if (hr != S_OK) return hr;
 785
 786     hr = create_signature( co->name, wszName, PARAM_OUT, ppOutSignature );
 787     if (hr != S_OK) IWbemClassObject_Release( *ppInSignature );
 788     return hr;
 789 }
 790
 791 static HRESULT WINAPI class_object_PutMethod(
 792     IWbemClassObject *iface,
 793     LPCWSTR wszName,
 794     LONG lFlags,
 795     IWbemClassObject *pInSignature,
 796     IWbemClassObject *pOutSignature )
 797 {
 798     FIXME("%p, %s, %08x, %p, %p\n", iface, debugstr_w(wszName), lFlags, pInSignature, pOutSignature);
 799     return E_NOTIMPL;
 800 }
 801
 802 static HRESULT WINAPI class_object_DeleteMethod(
 803     IWbemClassObject *iface,
 804     LPCWSTR wszName )
 805 {
 806     FIXME("%p, %s\n", iface, debugstr_w(wszName));
 807     return E_NOTIMPL;
 808 }
 809
 810 static HRESULT WINAPI class_object_BeginMethodEnumeration(
 811     IWbemClassObject *iface,
 812     LONG lEnumFlags)
 813 {
 814     struct class_object *co = impl_from_IWbemClassObject( iface );
 815
 816     TRACE("%p, %08x\n", iface, lEnumFlags);
 817
 818     if (lEnumFlags) FIXME("flags 0x%08x not supported\n", lEnumFlags);
 819
 820     if (co->iter)
 821     {
 822         WARN("not allowed on instance\n");
 823         return WBEM_E_ILLEGAL_OPERATION;
 824     }
 825     co->index_method = 0;
 826     return S_OK;
 827 }
 828
 829 static HRESULT WINAPI class_object_NextMethod(
 830     IWbemClassObject *iface,
 831     LONG lFlags,
 832     BSTR *pstrName,
 833     IWbemClassObject **ppInSignature,
 834     IWbemClassObject **ppOutSignature)
 835 {
 836     struct class_object *co = impl_from_IWbemClassObject( iface );
 837     const WCHAR *method;
 838     HRESULT hr;
 839
 840     TRACE("%p, %08x, %p, %p, %p\n", iface, lFlags, pstrName, ppInSignature, ppOutSignature);
 841
 842     if (!(method = get_method_name( co->name, co->index_method ))) return WBEM_S_NO_MORE_DATA;
 843
 844     hr = create_signature( co->name, method, PARAM_IN, ppInSignature );
 845     if (hr != S_OK) return hr;
 846
 847     hr = create_signature( co->name, method, PARAM_OUT, ppOutSignature );
 848     if (hr != S_OK) IWbemClassObject_Release( *ppInSignature );
 849     else
 850     {
 851         if (!(*pstrName = SysAllocString( method )))
 852         {
 853             IWbemClassObject_Release( *ppInSignature );
 854             IWbemClassObject_Release( *ppOutSignature );
 855             return E_OUTOFMEMORY;
 856         }
 857         co->index_method++;
 858     }
 859     return hr;
 860 }
 861
 862 static HRESULT WINAPI class_object_EndMethodEnumeration(
 863     IWbemClassObject *iface )
 864 {
 865     struct class_object *co = impl_from_IWbemClassObject( iface );
 866
 867     TRACE("%p\n", iface);
 868
 869     co->index_method = 0;
 870     return S_OK;
 871 }
 872
 873 static HRESULT WINAPI class_object_GetMethodQualifierSet(
 874     IWbemClassObject *iface,
 875     LPCWSTR wszMethod,
 876     IWbemQualifierSet **ppQualSet)
 877 {
 878     FIXME("%p, %s, %p\n", iface, debugstr_w(wszMethod), ppQualSet);
 879     return E_NOTIMPL;
 880 }
 881
 882 static HRESULT WINAPI class_object_GetMethodOrigin(
 883     IWbemClassObject *iface,
 884     LPCWSTR wszMethodName,
 885     BSTR *pstrClassName)
 886 {
 887     FIXME("%p, %s, %p\n", iface, debugstr_w(wszMethodName), pstrClassName);
 888     return E_NOTIMPL;
 889 }
 890
 891 static const IWbemClassObjectVtbl class_object_vtbl =
 892 {
 893     class_object_QueryInterface,
 894     class_object_AddRef,
 895     class_object_Release,
 896     class_object_GetQualifierSet,
 897     class_object_Get,
 898     class_object_Put,
 899     class_object_Delete,
 900     class_object_GetNames,
 901     class_object_BeginEnumeration,
 902     class_object_Next,
 903     class_object_EndEnumeration,
 904     class_object_GetPropertyQualifierSet,
 905     class_object_Clone,
 906     class_object_GetObjectText,
 907     class_object_SpawnDerivedClass,
 908     class_object_SpawnInstance,
 909     class_object_CompareTo,
 910     class_object_GetPropertyOrigin,
 911     class_object_InheritsFrom,
 912     class_object_GetMethod,
 913     class_object_PutMethod,
 914     class_object_DeleteMethod,
 915     class_object_BeginMethodEnumeration,
 916     class_object_NextMethod,
 917     class_object_EndMethodEnumeration,
 918     class_object_GetMethodQualifierSet,
 919     class_object_GetMethodOrigin
 920 };
 921
 922 HRESULT create_class_object( const WCHAR *name, IEnumWbemClassObject *iter, UINT index,
 923                              struct record *record, IWbemClassObject **obj )
 924 {
 925     struct class_object *co;
 926
 927     TRACE("%s, %p\n", debugstr_w(name), obj);
 928
 929     co = heap_alloc( sizeof(*co) );
 930     if (!co) return E_OUTOFMEMORY;
 931
 932     co->IWbemClassObject_iface.lpVtbl = &class_object_vtbl;
 933     co->refs  = 1;
 934     co->name  = heap_strdupW( name );
 935     if (!co->name)
 936     {
 937         heap_free( co );
 938         return E_OUTOFMEMORY;
 939     }
 940     co->iter           = iter;
 941     co->index          = index;
 942     co->index_method   = 0;
 943     co->index_property = 0;
 944     co->record         = record;
 945     if (iter) IEnumWbemClassObject_AddRef( iter );
 946
 947     *obj = &co->IWbemClassObject_iface;
 948
 949     TRACE("returning iface %p\n", *obj);
 950     return S_OK;
 951 }