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Sweden-Number/dlls/wbemprox/query.c

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/*
* Copyright 2012 Hans Leidekker for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define COBJMACROS
#include "config.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wbemcli.h"
#include "wine/debug.h"
#include "wbemprox_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(wbemprox);
HRESULT create_view( const struct property *proplist, const WCHAR *class,
const struct expr *cond, struct view **ret )
{
struct view *view = heap_alloc( sizeof(struct view) );
if (!view) return E_OUTOFMEMORY;
view->proplist = proplist;
view->table = get_table( class );
view->cond = cond;
view->result = NULL;
view->count = 0;
*ret = view;
return S_OK;
}
void destroy_view( struct view *view )
{
free_table( view->table );
heap_free( view->result );
heap_free( view );
}
static BOOL eval_like( const WCHAR *lstr, const WCHAR *rstr )
{
const WCHAR *p = lstr, *q = rstr;
while (*p && *q)
{
if (*q == '%')
{
while (*q == '%') q++;
if (!*q) return TRUE;
while (*p && toupperW( p[1] ) != toupperW( q[1] )) p++;
if (!*p) return TRUE;
}
if (toupperW( *p++ ) != toupperW( *q++ )) return FALSE;
}
return TRUE;
}
static HRESULT eval_strcmp( UINT op, const WCHAR *lstr, const WCHAR *rstr, LONGLONG *val )
{
switch (op)
{
case OP_EQ:
*val = !strcmpW( lstr, rstr );
break;
case OP_GT:
*val = strcmpW( lstr, rstr ) > 0;
break;
case OP_LT:
*val = strcmpW( lstr, rstr ) < 0;
break;
case OP_LE:
*val = strcmpW( lstr, rstr ) <= 0;
break;
case OP_GE:
*val = strcmpW( lstr, rstr ) >= 0;
break;
case OP_NE:
*val = strcmpW( lstr, rstr );
break;
case OP_LIKE:
*val = eval_like( lstr, rstr );
break;
default:
ERR("unhandled operator %u\n", op);
return WBEM_E_INVALID_QUERY;
}
return S_OK;
}
static inline BOOL is_strcmp( const struct complex_expr *expr )
{
return ((expr->left->type == EXPR_PROPVAL && expr->right->type == EXPR_SVAL) ||
(expr->left->type == EXPR_SVAL && expr->right->type == EXPR_PROPVAL));
}
static HRESULT eval_cond( const struct table *, UINT, const struct expr *, LONGLONG * );
static HRESULT eval_binary( const struct table *table, UINT row, const struct complex_expr *expr,
LONGLONG *val )
{
HRESULT lret, rret;
LONGLONG lval, rval;
lret = eval_cond( table, row, expr->left, &lval );
rret = eval_cond( table, row, expr->right, &rval );
if (lret != S_OK || rret != S_OK) return WBEM_E_INVALID_QUERY;
if (is_strcmp( expr ))
{
const WCHAR *lstr = (const WCHAR *)(INT_PTR)lval;
const WCHAR *rstr = (const WCHAR *)(INT_PTR)rval;
return eval_strcmp( expr->op, lstr, rstr, val );
}
switch (expr->op)
{
case OP_EQ:
*val = (lval == rval);
break;
case OP_AND:
*val = (lval && rval);
break;
case OP_OR:
*val = (lval || rval);
break;
case OP_GT:
*val = (lval > rval);
break;
case OP_LT:
*val = (lval < rval);
break;
case OP_LE:
*val = (lval <= rval);
break;
case OP_GE:
*val = (lval >= rval);
break;
case OP_NE:
*val = (lval != rval);
break;
default:
ERR("unhandled operator %u\n", expr->op);
return WBEM_E_INVALID_QUERY;
}
return S_OK;
}
static HRESULT eval_unary( const struct table *table, UINT row, const struct complex_expr *expr,
LONGLONG *val )
{
HRESULT hr;
UINT column;
LONGLONG lval;
hr = get_column_index( table, expr->left->u.propval->name, &column );
if (hr != S_OK)
return hr;
hr = get_value( table, row, column, &lval );
if (hr != S_OK)
return hr;
switch (expr->op)
{
case OP_ISNULL:
*val = !lval;
break;
case OP_NOTNULL:
*val = lval;
break;
default:
ERR("unknown operator %u\n", expr->op);
return WBEM_E_INVALID_QUERY;
}
return S_OK;
}
static HRESULT eval_propval( const struct table *table, UINT row, const struct property *propval,
LONGLONG *val )
{
HRESULT hr;
UINT column;
hr = get_column_index( table, propval->name, &column );
if (hr != S_OK)
return hr;
return get_value( table, row, column, val );
}
static HRESULT eval_cond( const struct table *table, UINT row, const struct expr *cond,
LONGLONG *val )
{
if (!cond)
{
*val = 1;
return S_OK;
}
switch (cond->type)
{
case EXPR_COMPLEX:
return eval_binary( table, row, &cond->u.expr, val );
case EXPR_UNARY:
return eval_unary( table, row, &cond->u.expr, val );
case EXPR_PROPVAL:
return eval_propval( table, row, cond->u.propval, val );
case EXPR_SVAL:
*val = (LONGLONG)(INT_PTR)cond->u.sval;
return S_OK;
case EXPR_IVAL:
case EXPR_BVAL:
*val = cond->u.ival;
return S_OK;
default:
ERR("invalid expression type\n");
break;
}
return WBEM_E_INVALID_QUERY;
}
static HRESULT execute_view( struct view *view )
{
UINT i, j = 0, len;
if (!view->table || !view->table->num_rows) return S_OK;
len = min( view->table->num_rows, 16 );
if (!(view->result = heap_alloc( len * sizeof(UINT) ))) return E_OUTOFMEMORY;
for (i = 0; i < view->table->num_rows; i++)
{
HRESULT hr;
LONGLONG val = 0;
if (j >= len)
{
UINT *tmp;
len *= 2;
if (!(tmp = heap_realloc( view->result, len * sizeof(UINT) ))) return E_OUTOFMEMORY;
view->result = tmp;
}
if ((hr = eval_cond( view->table, i, view->cond, &val )) != S_OK) return hr;
if (val) view->result[j++] = i;
}
view->count = j;
return S_OK;
}
static struct query *create_query(void)
{
struct query *query;
if (!(query = heap_alloc( sizeof(*query) ))) return NULL;
list_init( &query->mem );
query->refs = 1;
return query;
}
static void free_query( struct query *query )
{
struct list *mem, *next;
destroy_view( query->view );
LIST_FOR_EACH_SAFE( mem, next, &query->mem )
{
heap_free( mem );
}
heap_free( query );
}
void addref_query( struct query *query )
{
InterlockedIncrement( &query->refs );
}
void release_query( struct query *query )
{
if (!InterlockedDecrement( &query->refs )) free_query( query );
}
HRESULT exec_query( const WCHAR *str, IEnumWbemClassObject **result )
{
HRESULT hr;
struct query *query;
*result = NULL;
if (!(query = create_query())) return E_OUTOFMEMORY;
hr = parse_query( str, &query->view, &query->mem );
if (hr != S_OK) goto done;
hr = execute_view( query->view );
if (hr != S_OK) goto done;
hr = EnumWbemClassObject_create( NULL, query, (void **)result );
done:
release_query( query );
return hr;
}
static BOOL is_selected_prop( const struct view *view, const WCHAR *name )
{
const struct property *prop = view->proplist;
if (!prop) return TRUE;
while (prop)
{
if (!strcmpiW( prop->name, name )) return TRUE;
prop = prop->next;
}
return FALSE;
}
static BOOL is_system_prop( const WCHAR *name )
{
return (name[0] == '_' && name[1] == '_');
}
static BSTR build_servername( const struct view *view )
{
WCHAR server[MAX_COMPUTERNAME_LENGTH + 1], *p;
DWORD len = sizeof(server)/sizeof(server[0]);
if (view->proplist) return NULL;
if (!(GetComputerNameW( server, &len ))) return NULL;
for (p = server; *p; p++) *p = toupperW( *p );
return SysAllocString( server );
}
static BSTR build_classname( const struct view *view )
{
return SysAllocString( view->table->name );
}
static BSTR build_namespace( const struct view *view )
{
static const WCHAR cimv2W[] = {'R','O','O','T','\\','C','I','M','V','2',0};
if (view->proplist) return NULL;
return SysAllocString( cimv2W );
}
static BSTR build_proplist( const struct view *view, UINT index, UINT count, UINT *len )
{
static const WCHAR fmtW[] = {'%','s','=','%','s',0};
UINT i, j, offset, row = view->result[index];
BSTR *values, ret = NULL;
if (!(values = heap_alloc( count * sizeof(BSTR) ))) return NULL;
*len = j = 0;
for (i = 0; i < view->table->num_cols; i++)
{
if (view->table->columns[i].type & COL_FLAG_KEY)
{
const WCHAR *name = view->table->columns[i].name;
values[j] = get_value_bstr( view->table, row, i );
*len += strlenW( fmtW ) + strlenW( name ) + strlenW( values[j] );
j++;
}
}
if ((ret = SysAllocStringLen( NULL, *len )))
{
offset = j = 0;
for (i = 0; i < view->table->num_cols; i++)
{
if (view->table->columns[i].type & COL_FLAG_KEY)
{
const WCHAR *name = view->table->columns[i].name;
offset += sprintfW( ret + offset, fmtW, name, values[j] );
if (j < count - 1) ret[offset++] = ',';
j++;
}
}
}
for (i = 0; i < count; i++) SysFreeString( values[i] );
heap_free( values );
return ret;
}
static UINT count_key_columns( const struct view *view )
{
UINT i, num_keys = 0;
for (i = 0; i < view->table->num_cols; i++)
{
if (view->table->columns[i].type & COL_FLAG_KEY) num_keys++;
}
return num_keys;
}
static BSTR build_relpath( const struct view *view, UINT index, const WCHAR *name )
{
static const WCHAR fmtW[] = {'%','s','.','%','s',0};
BSTR class, proplist, ret = NULL;
UINT num_keys, len;
if (view->proplist) return NULL;
if (!(class = build_classname( view ))) return NULL;
if (!(num_keys = count_key_columns( view ))) return class;
if (!(proplist = build_proplist( view, index, num_keys, &len ))) goto done;
len += strlenW( fmtW ) + SysStringLen( class );
if (!(ret = SysAllocStringLen( NULL, len ))) goto done;
sprintfW( ret, fmtW, class, proplist );
done:
SysFreeString( class );
SysFreeString( proplist );
return ret;
}
static BSTR build_path( const struct view *view, UINT index, const WCHAR *name )
{
static const WCHAR fmtW[] = {'\\','\\','%','s','\\','%','s',':','%','s',0};
BSTR server, namespace = NULL, relpath = NULL, ret = NULL;
UINT len;
if (view->proplist) return NULL;
if (!(server = build_servername( view ))) return NULL;
if (!(namespace = build_namespace( view ))) goto done;
if (!(relpath = build_relpath( view, index, name ))) goto done;
len = strlenW( fmtW ) + SysStringLen( server ) + SysStringLen( namespace ) + SysStringLen( relpath );
if (!(ret = SysAllocStringLen( NULL, len ))) goto done;
sprintfW( ret, fmtW, server, namespace, relpath );
done:
SysFreeString( server );
SysFreeString( namespace );
SysFreeString( relpath );
return ret;
}
static inline BOOL is_method( const struct table *table, UINT column )
{
return table->columns[column].type & COL_FLAG_METHOD;
}
static UINT count_properties( const struct view *view )
{
UINT i, num_props = 0;
for (i = 0; i < view->table->num_cols; i++)
{
if (!is_method( view->table, i)) num_props++;
}
return num_props;
}
static UINT count_selected_properties( const struct view *view )
{
const struct property *prop = view->proplist;
UINT count;
if (!prop) return count_properties( view );
count = 1;
while ((prop = prop->next)) count++;
return count;
}
static HRESULT get_system_propval( const struct view *view, UINT index, const WCHAR *name,
VARIANT *ret, CIMTYPE *type, LONG *flavor )
{
static const WCHAR classW[] = {'_','_','C','L','A','S','S',0};
static const WCHAR genusW[] = {'_','_','G','E','N','U','S',0};
static const WCHAR pathW[] = {'_','_','P','A','T','H',0};
static const WCHAR namespaceW[] = {'_','_','N','A','M','E','S','P','A','C','E',0};
static const WCHAR propcountW[] = {'_','_','P','R','O','P','E','R','T','Y','_','C','O','U','N','T',0};
static const WCHAR relpathW[] = {'_','_','R','E','L','P','A','T','H',0};
static const WCHAR serverW[] = {'_','_','S','E','R','V','E','R',0};
if (flavor) *flavor = WBEM_FLAVOR_ORIGIN_SYSTEM;
if (!strcmpiW( name, classW ))
{
V_VT( ret ) = VT_BSTR;
V_BSTR( ret ) = build_classname( view );
if (type) *type = CIM_STRING;
return S_OK;
}
if (!strcmpiW( name, genusW ))
{
V_VT( ret ) = VT_I4;
V_I4( ret ) = WBEM_GENUS_INSTANCE; /* FIXME */
if (type) *type = CIM_SINT32;
return S_OK;
}
else if (!strcmpiW( name, namespaceW ))
{
V_VT( ret ) = VT_BSTR;
V_BSTR( ret ) = build_namespace( view );
if (type) *type = CIM_STRING;
return S_OK;
}
else if (!strcmpiW( name, pathW ))
{
V_VT( ret ) = VT_BSTR;
V_BSTR( ret ) = build_path( view, index, name );
if (type) *type = CIM_STRING;
return S_OK;
}
if (!strcmpiW( name, propcountW ))
{
V_VT( ret ) = VT_I4;
V_I4( ret ) = count_selected_properties( view );
if (type) *type = CIM_SINT32;
return S_OK;
}
else if (!strcmpiW( name, relpathW ))
{
V_VT( ret ) = VT_BSTR;
V_BSTR( ret ) = build_relpath( view, index, name );
if (type) *type = CIM_STRING;
return S_OK;
}
else if (!strcmpiW( name, serverW ))
{
V_VT( ret ) = VT_BSTR;
V_BSTR( ret ) = build_servername( view );
if (type) *type = CIM_STRING;
return S_OK;
}
FIXME("system property %s not implemented\n", debugstr_w(name));
return WBEM_E_NOT_FOUND;
}
static void set_variant( VARTYPE vartype, LONGLONG val, BSTR val_bstr, VARIANT *ret )
{
switch (vartype)
{
case VT_BSTR:
V_VT( ret ) = VT_BSTR;
V_BSTR( ret ) = val_bstr;
return;
case VT_I2:
V_VT( ret ) = VT_I2;
V_I2( ret ) = val;
return;
case VT_UI2:
V_VT( ret ) = VT_UI2;
V_UI2( ret ) = val;
return;
case VT_I4:
V_VT( ret ) = VT_I4;
V_I4( ret ) = val;
return;
case VT_UI4:
V_VT( ret ) = VT_UI4;
V_UI4( ret ) = val;
return;
case VT_NULL:
V_VT( ret ) = VT_NULL;
return;
default:
ERR("unhandled variant type %u\n", vartype);
return;
}
}
HRESULT get_propval( const struct view *view, UINT index, const WCHAR *name, VARIANT *ret,
CIMTYPE *type, LONG *flavor )
{
HRESULT hr;
UINT column, row = view->result[index];
VARTYPE vartype;
BSTR val_bstr = NULL;
LONGLONG val;
if (is_system_prop( name )) return get_system_propval( view, index, name, ret, type, flavor );
if (!is_selected_prop( view, name )) return WBEM_E_NOT_FOUND;
hr = get_column_index( view->table, name, &column );
if (hr != S_OK || is_method( view->table, column )) return WBEM_E_NOT_FOUND;
vartype = view->table->columns[column].vartype;
hr = get_value( view->table, row, column, &val );
if (hr != S_OK) return hr;
switch (view->table->columns[column].type & COL_TYPE_MASK)
{
case CIM_STRING:
case CIM_DATETIME:
if (val)
{
vartype = VT_BSTR;
val_bstr = SysAllocString( (const WCHAR *)(INT_PTR)val );
}
else
vartype = VT_NULL;
break;
case CIM_SINT16:
if (!vartype) vartype = VT_I2;
break;
case CIM_UINT16:
if (!vartype) vartype = VT_UI2;
break;
case CIM_SINT32:
if (!vartype) vartype = VT_I4;
break;
case CIM_UINT32:
if (!vartype) vartype = VT_UI4;
break;
case CIM_SINT64:
vartype = VT_BSTR;
val_bstr = get_value_bstr( view->table, row, column );
break;
case CIM_UINT64:
vartype = VT_BSTR;
val_bstr = get_value_bstr( view->table, row, column );
break;
default:
ERR("unhandled column type %u\n", view->table->columns[column].type);
return WBEM_E_FAILED;
}
set_variant( vartype, val, val_bstr, ret );
if (type) *type = view->table->columns[column].type & COL_TYPE_MASK;
if (flavor) *flavor = 0;
return S_OK;
}
static HRESULT variant_to_longlong( VARIANT *var, LONGLONG *val, CIMTYPE *type )
{
if (!var)
{
*val = 0;
return S_OK;
}
switch (V_VT( var ))
{
case VT_BSTR:
*val = (INT_PTR)SysAllocString( V_BSTR( var ) );
if (!*val) return E_OUTOFMEMORY;
*type = CIM_STRING;
break;
case VT_I2:
*val = V_I2( var );
*type = CIM_SINT16;
break;
case VT_UI2:
*val = V_UI2( var );
*type = CIM_UINT16;
break;
case VT_I4:
*val = V_I4( var );
*type = CIM_SINT32;
break;
case VT_UI4:
*val = V_UI4( var );
*type = CIM_UINT32;
break;
case VT_NULL:
*val = 0;
break;
default:
ERR("unhandled type %u\n", V_VT( var ));
return WBEM_E_FAILED;
}
return S_OK;
}
HRESULT put_propval( const struct view *view, UINT index, const WCHAR *name, VARIANT *var, CIMTYPE type )
{
HRESULT hr;
UINT column, row = view->result[index];
LONGLONG val;
hr = get_column_index( view->table, name, &column );
if (hr != S_OK)
{
FIXME("no support for creating new properties\n");
return WBEM_E_FAILED;
}
if (is_method( view->table, column ) || !(view->table->columns[column].type & COL_FLAG_DYNAMIC))
return WBEM_E_FAILED;
hr = variant_to_longlong( var, &val, &type );
if (hr != S_OK) return hr;
return set_value( view->table, row, column, val, type );
}
HRESULT get_properties( const struct view *view, SAFEARRAY **props )
{
SAFEARRAY *sa;
BSTR str;
LONG i;
UINT num_props = count_properties( view );
if (!(sa = SafeArrayCreateVector( VT_BSTR, 0, num_props ))) return E_OUTOFMEMORY;
for (i = 0; i < view->table->num_cols; i++)
{
if (is_method( view->table, i )) continue;
str = SysAllocString( view->table->columns[i].name );
if (!str || SafeArrayPutElement( sa, &i, str ) != S_OK)
{
SysFreeString( str );
SafeArrayDestroy( sa );
return E_OUTOFMEMORY;
}
}
*props = sa;
return S_OK;
}
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