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_SINT8:
  56     case CIM_UINT8:
  57         return sizeof(INT8);
  58     case CIM_SINT16:
  59     case CIM_UINT16:
  60         return sizeof(INT16);
  61     case CIM_SINT32:
  62     case CIM_UINT32:
  63         return sizeof(INT32);
  64     case CIM_SINT64:
  65     case CIM_UINT64:
  66         return sizeof(INT64);
  67     case CIM_DATETIME:
  68     case CIM_STRING:
  69         return sizeof(WCHAR *);
  70     default:
  71         ERR("unhandled type %u\n", type);
  72         break;
  73     }
  74     return sizeof(LONGLONG);
  75 }
  76
  77 static UINT get_column_size( const struct table *table, UINT column )
  78 {
  79     return get_type_size( table->columns[column].type & COL_TYPE_MASK );
  80 }
  81
  82 static UINT get_column_offset( const struct table *table, UINT column )
  83 {
  84     UINT i, offset = 0;
  85     for (i = 0; i < column; i++) offset += get_column_size( table, i );
  86     return offset;
  87 }
  88
  89 static UINT get_row_size( const struct table *table )
  90 {
  91     return get_column_offset( table, table->num_cols - 1 ) + get_column_size( table, table->num_cols - 1 );
  92 }
  93
  94 HRESULT get_value( const struct table *table, UINT row, UINT column, LONGLONG *val )
  95 {
  96     UINT col_offset, row_size;
  97     const BYTE *ptr;
  98
  99     col_offset = get_column_offset( table, column );
 100     row_size = get_row_size( table );
 101     ptr = table->data + row * row_size + col_offset;
 102
 103     if (table->columns[column].type & CIM_FLAG_ARRAY)
 104     {
 105         *val = (INT_PTR)*(const void **)ptr;
 106         return S_OK;
 107     }
 108     switch (table->columns[column].type & COL_TYPE_MASK)
 109     {
 110     case CIM_BOOLEAN:
 111         *val = *(const int *)ptr;
 112         break;
 113     case CIM_DATETIME:
 114     case CIM_STRING:
 115         *val = (INT_PTR)*(const WCHAR **)ptr;
 116         break;
 117     case CIM_SINT8:
 118         *val = *(const INT8 *)ptr;
 119         break;
 120     case CIM_UINT8:
 121         *val = *(const UINT8 *)ptr;
 122         break;
 123     case CIM_SINT16:
 124         *val = *(const INT16 *)ptr;
 125         break;
 126     case CIM_UINT16:
 127         *val = *(const UINT16 *)ptr;
 128         break;
 129     case CIM_SINT32:
 130         *val = *(const INT32 *)ptr;
 131         break;
 132     case CIM_UINT32:
 133         *val = *(const UINT32 *)ptr;
 134         break;
 135     case CIM_SINT64:
 136         *val = *(const INT64 *)ptr;
 137         break;
 138     case CIM_UINT64:
 139         *val = *(const UINT64 *)ptr;
 140         break;
 141     default:
 142         ERR("invalid column type %u\n", table->columns[column].type & COL_TYPE_MASK);
 143         *val = 0;
 144         break;
 145     }
 146     return S_OK;
 147 }
 148
 149 BSTR get_value_bstr( const struct table *table, UINT row, UINT column )
 150 {
 151     static const WCHAR fmt_signedW[] = {'%','d',0};
 152     static const WCHAR fmt_unsignedW[] = {'%','u',0};
 153     static const WCHAR fmt_signed64W[] = {'%','I','6','4','d',0};
 154     static const WCHAR fmt_unsigned64W[] = {'%','I','6','4','u',0};
 155     static const WCHAR fmt_strW[] = {'\"','%','s','\"',0};
 156     static const WCHAR trueW[] = {'T','R','U','E',0};
 157     static const WCHAR falseW[] = {'F','A','L','S','E',0};
 158     LONGLONG val;
 159     BSTR ret;
 160     WCHAR number[22];
 161     UINT len;
 162
 163     if (table->columns[column].type & CIM_FLAG_ARRAY)
 164     {
 165         FIXME("array to string conversion not handled\n");
 166         return NULL;
 167     }
 168     if (get_value( table, row, column, &val ) != S_OK) return NULL;
 169
 170     switch (table->columns[column].type & COL_TYPE_MASK)
 171     {
 172     case CIM_BOOLEAN:
 173         if (val) return SysAllocString( trueW );
 174         else return SysAllocString( falseW );
 175
 176     case CIM_DATETIME:
 177     case CIM_STRING:
 178         if (!val) return NULL;
 179         len = strlenW( (const WCHAR *)(INT_PTR)val ) + 2;
 180         if (!(ret = SysAllocStringLen( NULL, len ))) return NULL;
 181         sprintfW( ret, fmt_strW, (const WCHAR *)(INT_PTR)val );
 182         return ret;
 183
 184     case CIM_SINT16:
 185     case CIM_SINT32:
 186         sprintfW( number, fmt_signedW, val );
 187         return SysAllocString( number );
 188
 189     case CIM_UINT16:
 190     case CIM_UINT32:
 191         sprintfW( number, fmt_unsignedW, val );
 192         return SysAllocString( number );
 193
 194     case CIM_SINT64:
 195         wsprintfW( number, fmt_signed64W, val );
 196         return SysAllocString( number );
 197
 198     case CIM_UINT64:
 199         wsprintfW( number, fmt_unsigned64W, val );
 200         return SysAllocString( number );
 201
 202     default:
 203         FIXME("unhandled column type %u\n", table->columns[column].type & COL_TYPE_MASK);
 204         break;
 205     }
 206     return NULL;
 207 }
 208
 209 HRESULT set_value( const struct table *table, UINT row, UINT column, LONGLONG val,
 210                    CIMTYPE type )
 211 {
 212     UINT col_offset, row_size;
 213     BYTE *ptr;
 214
 215     if ((table->columns[column].type & COL_TYPE_MASK) != type) return WBEM_E_TYPE_MISMATCH;
 216
 217     col_offset = get_column_offset( table, column );
 218     row_size = get_row_size( table );
 219     ptr = table->data + row * row_size + col_offset;
 220
 221     switch (table->columns[column].type & COL_TYPE_MASK)
 222     {
 223     case CIM_DATETIME:
 224     case CIM_STRING:
 225         *(WCHAR **)ptr = (WCHAR *)(INT_PTR)val;
 226         break;
 227     case CIM_SINT8:
 228         *(INT8 *)ptr = val;
 229         break;
 230     case CIM_UINT8:
 231         *(UINT8 *)ptr = val;
 232         break;
 233     case CIM_SINT16:
 234         *(INT16 *)ptr = val;
 235         break;
 236     case CIM_UINT16:
 237         *(UINT16 *)ptr = val;
 238         break;
 239     case CIM_SINT32:
 240         *(INT32 *)ptr = val;
 241         break;
 242     case CIM_UINT32:
 243         *(UINT32 *)ptr = val;
 244         break;
 245     case CIM_SINT64:
 246         *(INT64 *)ptr = val;
 247         break;
 248     case CIM_UINT64:
 249         *(UINT64 *)ptr = val;
 250         break;
 251     default:
 252         FIXME("unhandled column type %u\n", type);
 253         return WBEM_E_FAILED;
 254     }
 255     return S_OK;
 256 }
 257
 258 HRESULT get_method( const struct table *table, const WCHAR *name, class_method **func )
 259 {
 260     UINT i, j;
 261
 262     for (i = 0; i < table->num_rows; i++)
 263     {
 264         for (j = 0; j < table->num_cols; j++)
 265         {
 266             if (table->columns[j].type & COL_FLAG_METHOD && !strcmpW( table->columns[j].name, name ))
 267             {
 268                 HRESULT hr;
 269                 LONGLONG val;
 270
 271                 if ((hr = get_value( table, i, j, &val )) != S_OK) return hr;
 272                 *func = (class_method *)(INT_PTR)val;
 273                 return S_OK;
 274             }
 275         }
 276     }
 277     return WBEM_E_INVALID_METHOD;
 278
 279 }
 280
 281 void free_row_values( const struct table *table, UINT row )
 282 {
 283     UINT i, type;
 284     LONGLONG val;
 285
 286     for (i = 0; i < table->num_cols; i++)
 287     {
 288         if (!(table->columns[i].type & COL_FLAG_DYNAMIC)) continue;
 289
 290         type = table->columns[i].type & COL_TYPE_MASK;
 291         if (type == CIM_STRING || type == CIM_DATETIME || (type & CIM_FLAG_ARRAY))
 292         {
 293             if (get_value( table, row, i, &val ) == S_OK) heap_free( (void *)(INT_PTR)val );
 294         }
 295     }
 296 }
 297
 298 void clear_table( struct table *table )
 299 {
 300     UINT i;
 301
 302     if (!table->data) return;
 303
 304     for (i = 0; i < table->num_rows; i++) free_row_values( table, i );
 305     if (table->fill)
 306     {
 307         table->num_rows = 0;
 308         table->num_rows_allocated = 0;
 309         heap_free( table->data );
 310         table->data = NULL;
 311     }
 312 }
 313
 314 void free_columns( struct column *columns, UINT num_cols )
 315 {
 316     UINT i;
 317
 318     for (i = 0; i < num_cols; i++) { heap_free( (WCHAR *)columns[i].name ); }
 319     heap_free( columns );
 320 }
 321
 322 void free_table( struct table *table )
 323 {
 324     if (!table) return;
 325
 326     clear_table( table );
 327     if (table->flags & TABLE_FLAG_DYNAMIC)
 328     {
 329         TRACE("destroying %p\n", table);
 330         heap_free( (WCHAR *)table->name );
 331         free_columns( (struct column *)table->columns, table->num_cols );
 332         list_remove( &table->entry );
 333         heap_free( table );
 334     }
 335 }
 336
 337 void release_table( struct table *table )
 338 {
 339     if (!InterlockedDecrement( &table->refs )) free_table( table );
 340 }
 341
 342 struct table *addref_table( struct table *table )
 343 {
 344     InterlockedIncrement( &table->refs );
 345     return table;
 346 }
 347
 348 struct table *grab_table( const WCHAR *name )
 349 {
 350     struct table *table;
 351
 352     LIST_FOR_EACH_ENTRY( table, table_list, struct table, entry )
 353     {
 354         if (!strcmpiW( table->name, name ))
 355         {
 356             TRACE("returning %p\n", table);
 357             return addref_table( table );
 358         }
 359     }
 360     return NULL;
 361 }
 362
 363 struct table *create_table( const WCHAR *name, UINT num_cols, const struct column *columns,
 364                             UINT num_rows, UINT num_allocated, BYTE *data,
 365                             enum fill_status (*fill)(struct table *, const struct expr *cond) )
 366 {
 367     struct table *table;
 368
 369     if (!(table = heap_alloc( sizeof(*table) ))) return NULL;
 370     table->name               = heap_strdupW( name );
 371     table->num_cols           = num_cols;
 372     table->columns            = columns;
 373     table->num_rows           = num_rows;
 374     table->num_rows_allocated = num_allocated;
 375     table->data               = data;
 376     table->fill               = fill;
 377     table->flags              = TABLE_FLAG_DYNAMIC;
 378     table->refs               = 0;
 379     list_init( &table->entry );
 380     return table;
 381 }
 382
 383 BOOL add_table( struct table *table )
 384 {
 385     struct table *iter;
 386
 387     LIST_FOR_EACH_ENTRY( iter, table_list, struct table, entry )
 388     {
 389         if (!strcmpiW( iter->name, table->name ))
 390         {
 391             TRACE("table %s already exists\n", debugstr_w(table->name));
 392             return FALSE;
 393         }
 394     }
 395     list_add_tail( table_list, &table->entry );
 396     TRACE("added %p\n", table);
 397     return TRUE;
 398 }
 399
 400 BSTR get_method_name( const WCHAR *class, UINT index )
 401 {
 402     struct table *table;
 403     UINT i, count = 0;
 404     BSTR ret;
 405
 406     if (!(table = grab_table( class ))) return NULL;
 407
 408     for (i = 0; i < table->num_cols; i++)
 409     {
 410         if (table->columns[i].type & COL_FLAG_METHOD)
 411         {
 412             if (index == count)
 413             {
 414                 ret = SysAllocString( table->columns[i].name );
 415                 release_table( table );
 416                 return ret;
 417             }
 418             count++;
 419         }
 420     }
 421     release_table( table );
 422     return NULL;
 423 }