dlls/wbemprox/wbemlocator.c

   1 /*
   2  * Copyright 2009 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 "objbase.h"
  27 #include "wbemcli.h"
  28
  29 #include "wine/debug.h"
  30 #include "wine/unicode.h"
  31 #include "wbemprox_private.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(wbemprox);
  34
  35 typedef struct
  36 {
  37     IWbemLocator IWbemLocator_iface;
  38     LONG refs;
  39 } wbem_locator;
  40
  41 static inline wbem_locator *impl_from_IWbemLocator( IWbemLocator *iface )
  42 {
  43     return CONTAINING_RECORD(iface, wbem_locator, IWbemLocator_iface);
  44 }
  45
  46 static ULONG WINAPI wbem_locator_AddRef(
  47     IWbemLocator *iface )
  48 {
  49     wbem_locator *wl = impl_from_IWbemLocator( iface );
  50     return InterlockedIncrement( &wl->refs );
  51 }
  52
  53 static ULONG WINAPI wbem_locator_Release(
  54     IWbemLocator *iface )
  55 {
  56     wbem_locator *wl = impl_from_IWbemLocator( iface );
  57     LONG refs = InterlockedDecrement( &wl->refs );
  58     if (!refs)
  59     {
  60         TRACE("destroying %p\n", wl);
  61         heap_free( wl );
  62     }
  63     return refs;
  64 }
  65
  66 static HRESULT WINAPI wbem_locator_QueryInterface(
  67     IWbemLocator *iface,
  68     REFIID riid,
  69     void **ppvObject )
  70 {
  71     wbem_locator *This = impl_from_IWbemLocator( iface );
  72
  73     TRACE("%p %s %p\n", This, debugstr_guid( riid ), ppvObject );
  74
  75     if ( IsEqualGUID( riid, &IID_IWbemLocator ) ||
  76          IsEqualGUID( riid, &IID_IUnknown ) )
  77     {
  78         *ppvObject = iface;
  79     }
  80     else
  81     {
  82         FIXME("interface %s not implemented\n", debugstr_guid(riid));
  83         return E_NOINTERFACE;
  84     }
  85     IWbemLocator_AddRef( iface );
  86     return S_OK;
  87 }
  88
  89 static BOOL is_local_machine( const WCHAR *server )
  90 {
  91     static const WCHAR dotW[] = {'.',0};
  92     WCHAR buffer[MAX_COMPUTERNAME_LENGTH + 1];
  93     DWORD len = sizeof(buffer) / sizeof(buffer[0]);
  94
  95     if (!server || !strcmpW( server, dotW )) return TRUE;
  96     if (GetComputerNameW( buffer, &len ) && !strcmpiW( server, buffer )) return TRUE;
  97     return FALSE;
  98 }
  99
 100 static HRESULT parse_resource( const WCHAR *resource, WCHAR **server, WCHAR **namespace )
 101 {
 102     static const WCHAR rootW[] = {'R','O','O','T'};
 103     static const WCHAR cimv2W[] = {'C','I','M','V','2'};
 104     HRESULT hr = WBEM_E_INVALID_NAMESPACE;
 105     const WCHAR *p, *q;
 106     unsigned int len;
 107
 108     *server = NULL;
 109     *namespace = NULL;
 110     p = q = resource;
 111     if (*p == '\\' || *p == '/')
 112     {
 113         p++;
 114         if (*p == '\\' || *p == '/') p++;
 115         if (!*p) return WBEM_E_INVALID_NAMESPACE;
 116         if (*p == '\\' || *p == '/') return WBEM_E_INVALID_PARAMETER;
 117         q = p + 1;
 118         while (*q && *q != '\\' && *q != '/') q++;
 119         if (!*q) return WBEM_E_INVALID_NAMESPACE;
 120         len = q - p;
 121         if (!(*server = heap_alloc( (len + 1) * sizeof(WCHAR) )))
 122         {
 123             hr = E_OUTOFMEMORY;
 124             goto done;
 125         }
 126         memcpy( *server, p, len * sizeof(WCHAR) );
 127         (*server)[len] = 0;
 128         q++;
 129     }
 130     if (!*q) goto done;
 131     p = q;
 132     while (*q && *q != '\\' && *q != '/') q++;
 133     len = q - p;
 134     if (len >= sizeof(rootW) / sizeof(rootW[0]) && memicmpW( rootW, p, len )) goto done;
 135     if (!*q)
 136     {
 137         hr = S_OK;
 138         goto done;
 139     }
 140     q++;
 141     if ((len = strlenW( q )) != sizeof(cimv2W) / sizeof(cimv2W[0]) || memicmpW( q, cimv2W, len ))
 142         goto done;
 143     if (!(*namespace = heap_alloc( (len + 1) * sizeof(WCHAR) ))) hr = E_OUTOFMEMORY;
 144     else
 145     {
 146         memcpy( *namespace, p, len * sizeof(WCHAR) );
 147         (*namespace)[len] = 0;
 148         hr = S_OK;
 149     }
 150
 151 done:
 152     if (hr != S_OK)
 153     {
 154         heap_free( *server );
 155         heap_free( *namespace );
 156     }
 157     return hr;
 158 }
 159
 160 static HRESULT WINAPI wbem_locator_ConnectServer(
 161     IWbemLocator *iface,
 162     const BSTR NetworkResource,
 163     const BSTR User,
 164     const BSTR Password,
 165     const BSTR Locale,
 166     LONG SecurityFlags,
 167     const BSTR Authority,
 168     IWbemContext *pCtx,
 169     IWbemServices **ppNamespace)
 170 {
 171     HRESULT hr;
 172     WCHAR *server, *namespace;
 173
 174     TRACE("%p, %s, %s, %s, %s, 0x%08x, %s, %p, %p)\n", iface, debugstr_w(NetworkResource), debugstr_w(User),
 175           debugstr_w(Password), debugstr_w(Locale), SecurityFlags, debugstr_w(Authority), pCtx, ppNamespace);
 176
 177     hr = parse_resource( NetworkResource, &server, &namespace );
 178     if (hr != S_OK) return hr;
 179
 180     if (!is_local_machine( server ))
 181     {
 182         FIXME("remote computer not supported\n");
 183         heap_free( server );
 184         heap_free( namespace );
 185         return WBEM_E_TRANSPORT_FAILURE;
 186     }
 187     if (User || Password || Authority)
 188         FIXME("authentication not supported\n");
 189     if (Locale)
 190         FIXME("specific locale not supported\n");
 191     if (SecurityFlags)
 192         FIXME("unsupported flags\n");
 193
 194     hr = WbemServices_create( NULL, namespace, (void **)ppNamespace );
 195     heap_free( namespace );
 196     if (SUCCEEDED( hr ))
 197         return WBEM_NO_ERROR;
 198
 199     return WBEM_E_FAILED;
 200 }
 201
 202 static const IWbemLocatorVtbl wbem_locator_vtbl =
 203 {
 204     wbem_locator_QueryInterface,
 205     wbem_locator_AddRef,
 206     wbem_locator_Release,
 207     wbem_locator_ConnectServer
 208 };
 209
 210 HRESULT WbemLocator_create( IUnknown *pUnkOuter, LPVOID *ppObj )
 211 {
 212     wbem_locator *wl;
 213
 214     TRACE("(%p,%p)\n", pUnkOuter, ppObj);
 215
 216     wl = heap_alloc( sizeof(*wl) );
 217     if (!wl) return E_OUTOFMEMORY;
 218
 219     wl->IWbemLocator_iface.lpVtbl = &wbem_locator_vtbl;
 220     wl->refs = 1;
 221
 222     *ppObj = &wl->IWbemLocator_iface;
 223
 224     TRACE("returning iface %p\n", *ppObj);
 225     return S_OK;
 226 }