439 lines
11 KiB
C
439 lines
11 KiB
C
/*
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* Copyright 2012 Hans Leidekker for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define COBJMACROS
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#include "config.h"
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wbemcli.h"
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#include "wine/debug.h"
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#include "wbemprox_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(wbemprox);
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static HRESULT get_column_index( const struct table *table, const WCHAR *name, UINT *column )
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{
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UINT i;
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for (i = 0; i < table->num_cols; i++)
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{
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if (!strcmpiW( table->columns[i].name, name ))
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{
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*column = i;
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return S_OK;
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}
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}
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return WBEM_E_INVALID_QUERY;
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}
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static UINT get_column_size( const struct table *table, UINT column )
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{
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if (table->columns[column].type & CIM_FLAG_ARRAY) return sizeof(void *);
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switch (table->columns[column].type & COL_TYPE_MASK)
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{
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case CIM_SINT16:
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case CIM_UINT16:
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return sizeof(INT16);
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case CIM_SINT32:
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case CIM_UINT32:
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return sizeof(INT32);
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case CIM_DATETIME:
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case CIM_STRING:
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return sizeof(WCHAR *);
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default:
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ERR("unkown column type %u\n", table->columns[column].type & COL_TYPE_MASK);
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break;
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}
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return sizeof(INT32);
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}
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static UINT get_column_offset( const struct table *table, UINT column )
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{
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UINT i, offset = 0;
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for (i = 0; i < column; i++) offset += get_column_size( table, i );
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return offset;
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}
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static UINT get_row_size( const struct table *table )
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{
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return get_column_offset( table, table->num_cols - 1 ) + get_column_size( table, table->num_cols - 1 );
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}
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static HRESULT get_value( const struct table *table, UINT row, UINT column, INT_PTR *val )
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{
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UINT col_offset, row_size;
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const BYTE *ptr;
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col_offset = get_column_offset( table, column );
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row_size = get_row_size( table );
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ptr = table->data + row * row_size + col_offset;
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if (table->columns[column].type & CIM_FLAG_ARRAY)
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{
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*val = (INT_PTR)*(const void **)ptr;
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return S_OK;
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}
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switch (table->columns[column].type & COL_TYPE_MASK)
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{
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case CIM_DATETIME:
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case CIM_STRING:
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*val = (INT_PTR)*(const WCHAR **)ptr;
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break;
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case CIM_SINT16:
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*val = *(const INT16 *)ptr;
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break;
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case CIM_UINT16:
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*val = *(const UINT16 *)ptr;
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break;
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case CIM_SINT32:
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*val = *(const INT32 *)ptr;
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break;
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case CIM_UINT32:
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*val = *(const UINT32 *)ptr;
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break;
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default:
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ERR("invalid column type %u\n", table->columns[column].type & COL_TYPE_MASK);
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*val = 0;
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break;
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}
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return S_OK;
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}
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HRESULT create_view( const struct property *proplist, const WCHAR *class,
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const struct expr *cond, struct view **ret )
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{
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struct view *view = heap_alloc( sizeof(struct view) );
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if (!view) return E_OUTOFMEMORY;
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view->proplist = proplist;
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view->table = get_table( class );
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view->cond = cond;
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view->result = NULL;
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view->count = 0;
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view->index = 0;
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*ret = view;
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return S_OK;
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}
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static void clear_table( struct table *table )
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{
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UINT i, j, type;
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if (!table->fill || !table->data) return;
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for (i = 0; i < table->num_rows; i++)
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{
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for (j = 0; j < table->num_cols; j++)
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{
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if (!(table->columns[j].type & COL_FLAG_DYNAMIC)) continue;
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type = table->columns[j].type & COL_TYPE_MASK;
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if (type == CIM_STRING || type == CIM_DATETIME || (type & CIM_FLAG_ARRAY))
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{
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void *ptr;
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if (get_value( table, i, j, (INT_PTR *)&ptr ) == S_OK) heap_free( ptr );
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}
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}
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}
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heap_free( table->data );
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table->data = NULL;
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}
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void destroy_view( struct view *view )
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{
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if (view->table) clear_table( view->table );
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heap_free( view->result );
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heap_free( view );
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}
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static BOOL eval_like( INT_PTR lval, INT_PTR rval )
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{
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const WCHAR *p = (const WCHAR *)lval, *q = (const WCHAR *)rval;
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while (*p && *q)
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{
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if (*q == '%')
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{
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while (*q == '%') q++;
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if (!*q) return TRUE;
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while (*p && toupperW( p[1] ) != toupperW( q[1] )) p++;
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if (!*p) return TRUE;
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}
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if (toupperW( *p++ ) != toupperW( *q++ )) return FALSE;
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}
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return TRUE;
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}
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static HRESULT eval_cond( const struct table *, UINT, const struct expr *, INT_PTR * );
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static BOOL eval_binary( const struct table *table, UINT row, const struct complex_expr *expr,
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INT_PTR *val )
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{
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HRESULT lret, rret;
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INT_PTR lval, rval;
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lret = eval_cond( table, row, expr->left, &lval );
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rret = eval_cond( table, row, expr->right, &rval );
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if (lret != S_OK || rret != S_OK) return WBEM_E_INVALID_QUERY;
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switch (expr->op)
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{
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case OP_EQ:
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*val = (lval == rval);
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break;
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case OP_AND:
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*val = (lval && rval);
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break;
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case OP_OR:
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*val = (lval || rval);
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break;
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case OP_GT:
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*val = (lval > rval);
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break;
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case OP_LT:
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*val = (lval < rval);
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break;
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case OP_LE:
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*val = (lval <= rval);
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break;
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case OP_GE:
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*val = (lval >= rval);
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break;
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case OP_NE:
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*val = (lval != rval);
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break;
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case OP_LIKE:
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*val = eval_like( lval, rval );
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break;
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default:
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ERR("unknown operator %u\n", expr->op);
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return WBEM_E_INVALID_QUERY;
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}
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return S_OK;
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}
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static HRESULT eval_unary( const struct table *table, UINT row, const struct complex_expr *expr,
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INT_PTR *val )
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{
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HRESULT hr;
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UINT column;
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INT_PTR lval;
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hr = get_column_index( table, expr->left->u.propval->name, &column );
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if (hr != S_OK)
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return hr;
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hr = get_value( table, row, column, &lval );
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if (hr != S_OK)
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return hr;
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switch (expr->op)
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{
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case OP_ISNULL:
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*val = !lval;
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break;
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case OP_NOTNULL:
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*val = lval;
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break;
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default:
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ERR("unknown operator %u\n", expr->op);
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return WBEM_E_INVALID_QUERY;
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}
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return S_OK;
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}
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static HRESULT eval_propval( const struct table *table, UINT row, const struct property *propval,
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INT_PTR *val )
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{
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HRESULT hr;
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UINT column;
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hr = get_column_index( table, propval->name, &column );
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if (hr != S_OK)
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return hr;
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return get_value( table, row, column, val );
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}
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static HRESULT eval_cond( const struct table *table, UINT row, const struct expr *cond,
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INT_PTR *val )
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{
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if (!cond)
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{
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*val = 1;
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return S_OK;
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}
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switch (cond->type)
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{
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case EXPR_COMPLEX:
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return eval_binary( table, row, &cond->u.expr, val );
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case EXPR_UNARY:
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return eval_unary( table, row, &cond->u.expr, val );
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case EXPR_PROPVAL:
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return eval_propval( table, row, cond->u.propval, val );
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case EXPR_SVAL:
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*val = (INT_PTR)cond->u.sval;
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return S_OK;
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case EXPR_IVAL:
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case EXPR_BVAL:
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*val = cond->u.ival;
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return S_OK;
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default:
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ERR("invalid expression type\n");
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break;
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}
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return WBEM_E_INVALID_QUERY;
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}
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static HRESULT execute_view( struct view *view )
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{
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UINT i, j = 0, len;
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if (!view->table || !view->table->num_rows) return S_OK;
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len = min( view->table->num_rows, 16 );
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if (!(view->result = heap_alloc( len * sizeof(UINT) ))) return E_OUTOFMEMORY;
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for (i = 0; i < view->table->num_rows; i++)
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{
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HRESULT hr;
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INT_PTR val = 0;
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if (j >= len)
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{
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UINT *tmp;
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len *= 2;
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if (!(tmp = heap_realloc( view->result, len * sizeof(UINT) ))) return E_OUTOFMEMORY;
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view->result = tmp;
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}
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if ((hr = eval_cond( view->table, i, view->cond, &val )) != S_OK) return hr;
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if (val) view->result[j++] = i;
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}
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view->count = j;
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return S_OK;
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}
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static struct query *alloc_query(void)
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{
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struct query *query;
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if (!(query = heap_alloc( sizeof(*query) ))) return NULL;
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list_init( &query->mem );
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return query;
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}
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void free_query( struct query *query )
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{
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struct list *mem, *next;
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destroy_view( query->view );
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LIST_FOR_EACH_SAFE( mem, next, &query->mem )
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{
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heap_free( mem );
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}
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heap_free( query );
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}
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HRESULT exec_query( const WCHAR *str, IEnumWbemClassObject **result )
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{
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HRESULT hr;
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struct query *query;
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*result = NULL;
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if (!(query = alloc_query())) return E_OUTOFMEMORY;
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hr = parse_query( str, &query->view, &query->mem );
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if (hr != S_OK) goto done;
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hr = execute_view( query->view );
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if (hr != S_OK) goto done;
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hr = EnumWbemClassObject_create( NULL, query, (void **)result );
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done:
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if (hr != S_OK) free_query( query );
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return hr;
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}
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static BOOL is_selected_prop( const struct view *view, const WCHAR *name )
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{
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const struct property *prop = view->proplist;
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if (!prop) return TRUE;
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while (prop)
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{
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if (!strcmpiW( prop->name, name )) return TRUE;
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prop = prop->next;
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}
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return FALSE;
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}
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HRESULT get_propval( const struct view *view, UINT index, const WCHAR *name, VARIANT *ret, CIMTYPE *type )
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{
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HRESULT hr;
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UINT column, row = view->result[index];
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INT_PTR val;
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if (!is_selected_prop( view, name )) return WBEM_E_NOT_FOUND;
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hr = get_column_index( view->table, name, &column );
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if (hr != S_OK) return WBEM_E_NOT_FOUND;
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hr = get_value( view->table, row, column, &val );
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if (hr != S_OK) return hr;
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switch (view->table->columns[column].type & COL_TYPE_MASK)
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{
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case CIM_STRING:
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case CIM_DATETIME:
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V_VT( ret ) = VT_BSTR;
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V_BSTR( ret ) = SysAllocString( (const WCHAR *)val );
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break;
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default:
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ERR("unhandled column type %u\n", view->table->columns[column].type);
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return WBEM_E_FAILED;
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}
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if (type) *type = view->table->columns[column].type & COL_TYPE_MASK;
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return S_OK;
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}
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HRESULT get_properties( const struct view *view, SAFEARRAY **props )
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{
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SAFEARRAY *sa;
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BSTR str;
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LONG i;
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if (!(sa = SafeArrayCreateVector( VT_BSTR, 0, view->table->num_cols ))) return E_OUTOFMEMORY;
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for (i = 0; i < view->table->num_cols; i++)
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{
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str = SysAllocString( view->table->columns[i].name );
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if (!str || SafeArrayPutElement( sa, &i, str ) != S_OK)
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{
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SysFreeString( str );
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SafeArrayDestroy( sa );
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return E_OUTOFMEMORY;
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}
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}
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*props = sa;
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return S_OK;
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}
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