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 = (LONGLONG)(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 = (LONGLONG)(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     LONGLONG val;
 148     BSTR ret;
 149     WCHAR number[22];
 150     UINT len;
 151
 152     if (table->columns[column].type & CIM_FLAG_ARRAY)
 153     {
 154         FIXME("array to string conversion not handled\n");
 155         return NULL;
 156     }
 157     if (get_value( table, row, column, &val ) != S_OK) return NULL;
 158
 159     switch (table->columns[column].type & COL_TYPE_MASK)
 160     {
 161     case CIM_DATETIME:
 162     case CIM_STRING:
 163         len = strlenW( (const WCHAR *)(INT_PTR)val ) + 2;
 164         if (!(ret = SysAllocStringLen( NULL, len ))) return NULL;
 165         sprintfW( ret, fmt_strW, (const WCHAR *)(INT_PTR)val );
 166         return ret;
 167
 168     case CIM_SINT16:
 169     case CIM_SINT32:
 170         sprintfW( number, fmt_signedW, val );
 171         return SysAllocString( number );
 172
 173     case CIM_UINT16:
 174     case CIM_UINT32:
 175         sprintfW( number, fmt_unsignedW, val );
 176         return SysAllocString( number );
 177
 178     case CIM_SINT64:
 179         wsprintfW( number, fmt_signed64W, val );
 180         return SysAllocString( number );
 181
 182     case CIM_UINT64:
 183         wsprintfW( number, fmt_unsigned64W, val );
 184         return SysAllocString( number );
 185
 186     default:
 187         FIXME("unhandled column type %u\n", table->columns[column].type & COL_TYPE_MASK);
 188         break;
 189     }
 190     return NULL;
 191 }
 192
 193 HRESULT set_value( const struct table *table, UINT row, UINT column, LONGLONG val,
 194                    CIMTYPE type )
 195 {
 196     UINT col_offset, row_size;
 197     BYTE *ptr;
 198
 199     if ((table->columns[column].type & COL_TYPE_MASK) != type) return WBEM_E_TYPE_MISMATCH;
 200
 201     col_offset = get_column_offset( table, column );
 202     row_size = get_row_size( table );
 203     ptr = table->data + row * row_size + col_offset;
 204
 205     switch (table->columns[column].type & COL_TYPE_MASK)
 206     {
 207     case CIM_DATETIME:
 208     case CIM_STRING:
 209         *(WCHAR **)ptr = (WCHAR *)(INT_PTR)val;
 210         break;
 211     case CIM_SINT16:
 212         *(INT16 *)ptr = val;
 213         break;
 214     case CIM_UINT16:
 215         *(UINT16 *)ptr = val;
 216         break;
 217     case CIM_SINT32:
 218         *(INT32 *)ptr = val;
 219         break;
 220     case CIM_UINT32:
 221         *(UINT32 *)ptr = val;
 222         break;
 223     case CIM_SINT64:
 224         *(INT64 *)ptr = val;
 225         break;
 226     case CIM_UINT64:
 227         *(UINT64 *)ptr = val;
 228         break;
 229     default:
 230         FIXME("unhandled column type %u\n", type);
 231         return WBEM_E_FAILED;
 232     }
 233     return S_OK;
 234 }
 235
 236 static void clear_table( struct table *table )
 237 {
 238     UINT i, j, type;
 239     LONGLONG val;
 240
 241     if (!table->data) return;
 242
 243     for (i = 0; i < table->num_rows; i++)
 244     {
 245         for (j = 0; j < table->num_cols; j++)
 246         {
 247             if (!(table->columns[j].type & COL_FLAG_DYNAMIC)) continue;
 248
 249             type = table->columns[j].type & COL_TYPE_MASK;
 250             if (type == CIM_STRING || type == CIM_DATETIME || (type & CIM_FLAG_ARRAY))
 251             {
 252                 if (get_value( table, i, j, &val ) == S_OK) heap_free( (void *)(INT_PTR)val );
 253             }
 254         }
 255     }
 256     if (table->fill)
 257     {
 258         table->num_rows = 0;
 259         heap_free( table->data );
 260         table->data = NULL;
 261     }
 262 }
 263
 264 void free_columns( struct column *columns, UINT num_cols )
 265 {
 266     UINT i;
 267
 268     for (i = 0; i < num_cols; i++)
 269     {
 270         heap_free( (WCHAR *)columns[i].name );
 271     }
 272     heap_free( columns );
 273 }
 274
 275 void free_table( struct table *table )
 276 {
 277     if (!table) return;
 278
 279     clear_table( table );
 280     if (table->flags & TABLE_FLAG_DYNAMIC)
 281     {
 282         heap_free( (WCHAR *)table->name );
 283         free_columns( (struct column *)table->columns, table->num_cols );
 284         heap_free( table );
 285     }
 286 }
 287
 288 struct table *get_table( const WCHAR *name )
 289 {
 290     struct table *table;
 291
 292     LIST_FOR_EACH_ENTRY( table, table_list, struct table, entry )
 293     {
 294         if (!strcmpiW( table->name, name ))
 295         {
 296             if (table->fill && !table->data) table->fill( table );
 297             return table;
 298         }
 299     }
 300     return NULL;
 301 }
 302
 303 struct table *create_table( const WCHAR *name, UINT num_cols, const struct column *columns,
 304                             UINT num_rows, BYTE *data, void (*fill)(struct table *) )
 305 {
 306     struct table *table;
 307
 308     if (!(table = heap_alloc( sizeof(*table) ))) return NULL;
 309     table->name     = name;
 310     table->num_cols = num_cols;
 311     table->columns  = columns;
 312     table->num_rows = num_rows;
 313     table->data     = data;
 314     table->fill     = fill;
 315     table->flags    = TABLE_FLAG_DYNAMIC;
 316     return table;
 317 }
 318
 319 BOOL add_table( struct table *table )
 320 {
 321     struct table *iter;
 322
 323     LIST_FOR_EACH_ENTRY( iter, table_list, struct table, entry )
 324     {
 325         if (!strcmpiW( iter->name, table->name ))
 326         {
 327             TRACE("table %s already exists\n", debugstr_w(table->name));
 328             return FALSE;
 329         }
 330     }
 331     list_add_tail( table_list, &table->entry );
 332     return TRUE;
 333 }