dlls/wbemprox/table.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 "wbemcli.h"
  27
  28 #include "wine/debug.h"
  29 #include "wbemprox_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(wbemprox);
  32
  33 HRESULT get_column_index( const struct table *table, const WCHAR *name, UINT *column )
  34 {
  35     UINT i;
  36     for (i = 0; i < table->num_cols; i++)
  37     {
  38         if (!strcmpiW( table->columns[i].name, name ))
  39         {
  40             *column = i;
  41             return S_OK;
  42         }
  43     }
  44     return WBEM_E_INVALID_QUERY;
  45 }
  46
  47 UINT get_type_size( CIMTYPE type )
  48 {
  49     if (type & CIM_FLAG_ARRAY) return sizeof(void *);
  50
  51     switch (type)
  52     {
  53     case CIM_BOOLEAN:
  54         return sizeof(int);
  55     case CIM_SINT16:
  56     case CIM_UINT16:
  57         return sizeof(INT16);
  58     case CIM_SINT32:
  59     case CIM_UINT32:
  60         return sizeof(INT32);
  61     case CIM_SINT64:
  62     case CIM_UINT64:
  63         return sizeof(INT64);
  64     case CIM_DATETIME:
  65     case CIM_STRING:
  66         return sizeof(WCHAR *);
  67     default:
  68         ERR("unhandled type %u\n", type);
  69         break;
  70     }
  71     return sizeof(LONGLONG);
  72 }
  73
  74 static UINT get_column_size( const struct table *table, UINT column )
  75 {
  76     return get_type_size( table->columns[column].type & COL_TYPE_MASK );
  77 }
  78
  79 static UINT get_column_offset( const struct table *table, UINT column )
  80 {
  81     UINT i, offset = 0;
  82     for (i = 0; i < column; i++) offset += get_column_size( table, i );
  83     return offset;
  84 }
  85
  86 static UINT get_row_size( const struct table *table )
  87 {
  88     return get_column_offset( table, table->num_cols - 1 ) + get_column_size( table, table->num_cols - 1 );
  89 }
  90
  91 HRESULT get_value( const struct table *table, UINT row, UINT column, LONGLONG *val )
  92 {
  93     UINT col_offset, row_size;
  94     const BYTE *ptr;
  95
  96     col_offset = get_column_offset( table, column );
  97     row_size = get_row_size( table );
  98     ptr = table->data + row * row_size + col_offset;
  99
 100     if (table->columns[column].type & CIM_FLAG_ARRAY)
 101     {
 102         *val = (INT_PTR)*(const void **)ptr;
 103         return S_OK;
 104     }
 105     switch (table->columns[column].type & COL_TYPE_MASK)
 106     {
 107     case CIM_BOOLEAN:
 108         *val = *(const int *)ptr;
 109         break;
 110     case CIM_DATETIME:
 111     case CIM_STRING:
 112         *val = (INT_PTR)*(const WCHAR **)ptr;
 113         break;
 114     case CIM_SINT16:
 115         *val = *(const INT16 *)ptr;
 116         break;
 117     case CIM_UINT16:
 118         *val = *(const UINT16 *)ptr;
 119         break;
 120     case CIM_SINT32:
 121         *val = *(const INT32 *)ptr;
 122         break;
 123     case CIM_UINT32:
 124         *val = *(const UINT32 *)ptr;
 125         break;
 126     case CIM_SINT64:
 127         *val = *(const INT64 *)ptr;
 128         break;
 129     case CIM_UINT64:
 130         *val = *(const UINT64 *)ptr;
 131         break;
 132     default:
 133         ERR("invalid column type %u\n", table->columns[column].type & COL_TYPE_MASK);
 134         *val = 0;
 135         break;
 136     }
 137     return S_OK;
 138 }
 139
 140 BSTR get_value_bstr( const struct table *table, UINT row, UINT column )
 141 {
 142     static const WCHAR fmt_signedW[] = {'%','d',0};
 143     static const WCHAR fmt_unsignedW[] = {'%','u',0};
 144     static const WCHAR fmt_signed64W[] = {'%','I','6','4','d',0};
 145     static const WCHAR fmt_unsigned64W[] = {'%','I','6','4','u',0};
 146     static const WCHAR fmt_strW[] = {'\"','%','s','\"',0};
 147     static const WCHAR trueW[] = {'T','R','U','E',0};
 148     static const WCHAR falseW[] = {'F','A','L','S','E',0};
 149     LONGLONG val;
 150     BSTR ret;
 151     WCHAR number[22];
 152     UINT len;
 153
 154     if (table->columns[column].type & CIM_FLAG_ARRAY)
 155     {
 156         FIXME("array to string conversion not handled\n");
 157         return NULL;
 158     }
 159     if (get_value( table, row, column, &val ) != S_OK) return NULL;
 160
 161     switch (table->columns[column].type & COL_TYPE_MASK)
 162     {
 163     case CIM_BOOLEAN:
 164         if (val) return SysAllocString( trueW );
 165         else return SysAllocString( falseW );
 166
 167     case CIM_DATETIME:
 168     case CIM_STRING:
 169         len = strlenW( (const WCHAR *)(INT_PTR)val ) + 2;
 170         if (!(ret = SysAllocStringLen( NULL, len ))) return NULL;
 171         sprintfW( ret, fmt_strW, (const WCHAR *)(INT_PTR)val );
 172         return ret;
 173
 174     case CIM_SINT16:
 175     case CIM_SINT32:
 176         sprintfW( number, fmt_signedW, val );
 177         return SysAllocString( number );
 178
 179     case CIM_UINT16:
 180     case CIM_UINT32:
 181         sprintfW( number, fmt_unsignedW, val );
 182         return SysAllocString( number );
 183
 184     case CIM_SINT64:
 185         wsprintfW( number, fmt_signed64W, val );
 186         return SysAllocString( number );
 187
 188     case CIM_UINT64:
 189         wsprintfW( number, fmt_unsigned64W, val );
 190         return SysAllocString( number );
 191
 192     default:
 193         FIXME("unhandled column type %u\n", table->columns[column].type & COL_TYPE_MASK);
 194         break;
 195     }
 196     return NULL;
 197 }
 198
 199 HRESULT set_value( const struct table *table, UINT row, UINT column, LONGLONG val,
 200                    CIMTYPE type )
 201 {
 202     UINT col_offset, row_size;
 203     BYTE *ptr;
 204
 205     if ((table->columns[column].type & COL_TYPE_MASK) != type) return WBEM_E_TYPE_MISMATCH;
 206
 207     col_offset = get_column_offset( table, column );
 208     row_size = get_row_size( table );
 209     ptr = table->data + row * row_size + col_offset;
 210
 211     switch (table->columns[column].type & COL_TYPE_MASK)
 212     {
 213     case CIM_DATETIME:
 214     case CIM_STRING:
 215         *(WCHAR **)ptr = (WCHAR *)(INT_PTR)val;
 216         break;
 217     case CIM_SINT16:
 218         *(INT16 *)ptr = val;
 219         break;
 220     case CIM_UINT16:
 221         *(UINT16 *)ptr = val;
 222         break;
 223     case CIM_SINT32:
 224         *(INT32 *)ptr = val;
 225         break;
 226     case CIM_UINT32:
 227         *(UINT32 *)ptr = val;
 228         break;
 229     case CIM_SINT64:
 230         *(INT64 *)ptr = val;
 231         break;
 232     case CIM_UINT64:
 233         *(UINT64 *)ptr = val;
 234         break;
 235     default:
 236         FIXME("unhandled column type %u\n", type);
 237         return WBEM_E_FAILED;
 238     }
 239     return S_OK;
 240 }
 241
 242 HRESULT get_method( const struct table *table, const WCHAR *name, class_method **func )
 243 {
 244     UINT i, j;
 245
 246     for (i = 0; i < table->num_rows; i++)
 247     {
 248         for (j = 0; j < table->num_cols; j++)
 249         {
 250             if (table->columns[j].type & COL_FLAG_METHOD && !strcmpW( table->columns[j].name, name ))
 251             {
 252                 HRESULT hr;
 253                 LONGLONG val;
 254
 255                 if ((hr = get_value( table, i, j, &val )) != S_OK) return hr;
 256                 *func = (class_method *)(INT_PTR)val;
 257                 return S_OK;
 258             }
 259         }
 260     }
 261     return WBEM_E_INVALID_METHOD;
 262
 263 }
 264
 265 static void clear_table( struct table *table )
 266 {
 267     UINT i, j, type;
 268     LONGLONG val;
 269
 270     if (!table->data) return;
 271
 272     for (i = 0; i < table->num_rows; i++)
 273     {
 274         for (j = 0; j < table->num_cols; j++)
 275         {
 276             if (!(table->columns[j].type & COL_FLAG_DYNAMIC)) continue;
 277
 278             type = table->columns[j].type & COL_TYPE_MASK;
 279             if (type == CIM_STRING || type == CIM_DATETIME || (type & CIM_FLAG_ARRAY))
 280             {
 281                 if (get_value( table, i, j, &val ) == S_OK) heap_free( (void *)(INT_PTR)val );
 282             }
 283         }
 284     }
 285     if (table->fill)
 286     {
 287         table->num_rows = 0;
 288         heap_free( table->data );
 289         table->data = NULL;
 290     }
 291 }
 292
 293 void free_columns( struct column *columns, UINT num_cols )
 294 {
 295     UINT i;
 296
 297     for (i = 0; i < num_cols; i++)
 298     {
 299         heap_free( (WCHAR *)columns[i].name );
 300     }
 301     heap_free( columns );
 302 }
 303
 304 void free_table( struct table *table )
 305 {
 306     if (!table) return;
 307
 308     clear_table( table );
 309     if (table->flags & TABLE_FLAG_DYNAMIC)
 310     {
 311         TRACE("destroying %p\n", table);
 312         heap_free( (WCHAR *)table->name );
 313         free_columns( (struct column *)table->columns, table->num_cols );
 314         list_remove( &table->entry );
 315         heap_free( table );
 316     }
 317 }
 318
 319 void release_table( struct table *table )
 320 {
 321     if (!InterlockedDecrement( &table->refs )) free_table( table );
 322 }
 323
 324 struct table *addref_table( struct table *table )
 325 {
 326     InterlockedIncrement( &table->refs );
 327     return table;
 328 }
 329
 330 struct table *grab_table( const WCHAR *name )
 331 {
 332     struct table *table;
 333
 334     LIST_FOR_EACH_ENTRY( table, table_list, struct table, entry )
 335     {
 336         if (!strcmpiW( table->name, name ))
 337         {
 338             if (table->fill && !table->data) table->fill( table );
 339             TRACE("returning %p\n", table);
 340             return addref_table( table );
 341         }
 342     }
 343     return NULL;
 344 }
 345
 346 struct table *create_table( const WCHAR *name, UINT num_cols, const struct column *columns,
 347                             UINT num_rows, BYTE *data, void (*fill)(struct table *) )
 348 {
 349     struct table *table;
 350
 351     if (!(table = heap_alloc( sizeof(*table) ))) return NULL;
 352     table->name     = heap_strdupW( name );
 353     table->num_cols = num_cols;
 354     table->columns  = columns;
 355     table->num_rows = num_rows;
 356     table->data     = data;
 357     table->fill     = fill;
 358     table->flags    = TABLE_FLAG_DYNAMIC;
 359     table->refs     = 0;
 360     list_init( &table->entry );
 361     return table;
 362 }
 363
 364 BOOL add_table( struct table *table )
 365 {
 366     struct table *iter;
 367
 368     LIST_FOR_EACH_ENTRY( iter, table_list, struct table, entry )
 369     {
 370         if (!strcmpiW( iter->name, table->name ))
 371         {
 372             TRACE("table %s already exists\n", debugstr_w(table->name));
 373             return FALSE;
 374         }
 375     }
 376     list_add_tail( table_list, &table->entry );
 377     TRACE("added %p\n", table);
 378     return TRUE;
 379 }
 380
 381 BSTR get_method_name( const WCHAR *class, UINT index )
 382 {
 383     struct table *table;
 384     UINT i, count = 0;
 385     BSTR ret;
 386
 387     if (!(table = grab_table( class ))) return NULL;
 388
 389     for (i = 0; i < table->num_cols; i++)
 390     {
 391         if (table->columns[i].type & COL_FLAG_METHOD)
 392         {
 393             if (index == count)
 394             {
 395                 ret = SysAllocString( table->columns[i].name );
 396                 release_table( table );
 397                 return ret;
 398             }
 399             count++;
 400         }
 401     }
 402     release_table( table );
 403     return NULL;
 404 }
 405
 406 BSTR get_property_name( const WCHAR *class, UINT index )
 407 {
 408     struct table *table;
 409     UINT i, count = 0;
 410     BSTR ret;
 411
 412     if (!(table = grab_table( class ))) return NULL;
 413
 414     for (i = 0; i < table->num_cols; i++)
 415     {
 416         if (!(table->columns[i].type & COL_FLAG_METHOD))
 417         {
 418             if (index == count)
 419             {
 420                 ret = SysAllocString( table->columns[i].name );
 421                 release_table( table );
 422                 return ret;
 423             }
 424             count++;
 425         }
 426     }
 427     release_table( table );
 428     return NULL;
 429 }