dll/win32/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 #include "wbemprox_private.h"
  20
  21 typedef struct
  22 {
  23     IWbemLocator IWbemLocator_iface;
  24     LONG refs;
  25 } wbem_locator;
  26
  27 static inline wbem_locator *impl_from_IWbemLocator( IWbemLocator *iface )
  28 {
  29     return CONTAINING_RECORD(iface, wbem_locator, IWbemLocator_iface);
  30 }
  31
  32 static ULONG WINAPI wbem_locator_AddRef(
  33     IWbemLocator *iface )
  34 {
  35     wbem_locator *wl = impl_from_IWbemLocator( iface );
  36     return InterlockedIncrement( &wl->refs );
  37 }
  38
  39 static ULONG WINAPI wbem_locator_Release(
  40     IWbemLocator *iface )
  41 {
  42     wbem_locator *wl = impl_from_IWbemLocator( iface );
  43     LONG refs = InterlockedDecrement( &wl->refs );
  44     if (!refs)
  45     {
  46         TRACE("destroying %p\n", wl);
  47         heap_free( wl );
  48     }
  49     return refs;
  50 }
  51
  52 static HRESULT WINAPI wbem_locator_QueryInterface(
  53     IWbemLocator *iface,
  54     REFIID riid,
  55     void **ppvObject )
  56 {
  57     wbem_locator *This = impl_from_IWbemLocator( iface );
  58
  59     TRACE("%p %s %p\n", This, debugstr_guid( riid ), ppvObject );
  60
  61     if ( IsEqualGUID( riid, &IID_IWbemLocator ) ||
  62          IsEqualGUID( riid, &IID_IUnknown ) )
  63     {
  64         *ppvObject = iface;
  65     }
  66     else
  67     {
  68         FIXME("interface %s not implemented\n", debugstr_guid(riid));
  69         return E_NOINTERFACE;
  70     }
  71     IWbemLocator_AddRef( iface );
  72     return S_OK;
  73 }
  74
  75 static BOOL is_local_machine( const WCHAR *server )
  76 {
  77     static const WCHAR dotW[] = {'.',0};
  78     WCHAR buffer[MAX_COMPUTERNAME_LENGTH + 1];
  79     DWORD len = sizeof(buffer) / sizeof(buffer[0]);
  80
  81     if (!server || !strcmpW( server, dotW )) return TRUE;
  82     if (GetComputerNameW( buffer, &len ) && !strcmpiW( server, buffer )) return TRUE;
  83     return FALSE;
  84 }
  85
  86 static HRESULT parse_resource( const WCHAR *resource, WCHAR **server, WCHAR **namespace )
  87 {
  88     static const WCHAR rootW[] = {'R','O','O','T'};
  89     static const WCHAR cimv2W[] = {'C','I','M','V','2'};
  90     static const WCHAR defaultW[] = {'D','E','F','A','U','L','T'};
  91     HRESULT hr = WBEM_E_INVALID_NAMESPACE;
  92     const WCHAR *p, *q;
  93     unsigned int len;
  94
  95     *server = NULL;
  96     *namespace = NULL;
  97     p = q = resource;
  98     if (*p == '\\' || *p == '/')
  99     {
 100         p++;
 101         if (*p == '\\' || *p == '/') p++;
 102         if (!*p) return WBEM_E_INVALID_NAMESPACE;
 103         if (*p == '\\' || *p == '/') return WBEM_E_INVALID_PARAMETER;
 104         q = p + 1;
 105         while (*q && *q != '\\' && *q != '/') q++;
 106         if (!*q) return WBEM_E_INVALID_NAMESPACE;
 107         len = q - p;
 108         if (!(*server = heap_alloc( (len + 1) * sizeof(WCHAR) )))
 109         {
 110             hr = E_OUTOFMEMORY;
 111             goto done;
 112         }
 113         memcpy( *server, p, len * sizeof(WCHAR) );
 114         (*server)[len] = 0;
 115         q++;
 116     }
 117     if (!*q) goto done;
 118     p = q;
 119     while (*q && *q != '\\' && *q != '/') q++;
 120     len = q - p;
 121     if (len >= sizeof(rootW) / sizeof(rootW[0]) && memicmpW( rootW, p, len )) goto done;
 122     if (!*q)
 123     {
 124         hr = S_OK;
 125         goto done;
 126     }
 127     q++;
 128     len = strlenW( q );
 129     if ((len != sizeof(cimv2W) / sizeof(cimv2W[0]) || memicmpW( q, cimv2W, len )) &&
 130         (len != sizeof(defaultW) / sizeof(defaultW[0]) || memicmpW( q, defaultW, len )))
 131         goto done;
 132     if (!(*namespace = heap_alloc( (len + 1) * sizeof(WCHAR) ))) hr = E_OUTOFMEMORY;
 133     else
 134     {
 135         memcpy( *namespace, p, len * sizeof(WCHAR) );
 136         (*namespace)[len] = 0;
 137         hr = S_OK;
 138     }
 139
 140 done:
 141     if (hr != S_OK)
 142     {
 143         heap_free( *server );
 144         heap_free( *namespace );
 145     }
 146     return hr;
 147 }
 148
 149 static HRESULT WINAPI wbem_locator_ConnectServer(
 150     IWbemLocator *iface,
 151     const BSTR NetworkResource,
 152     const BSTR User,
 153     const BSTR Password,
 154     const BSTR Locale,
 155     LONG SecurityFlags,
 156     const BSTR Authority,
 157     IWbemContext *pCtx,
 158     IWbemServices **ppNamespace)
 159 {
 160     HRESULT hr;
 161     WCHAR *server, *namespace;
 162
 163     TRACE("%p, %s, %s, %s, %s, 0x%08x, %s, %p, %p)\n", iface, debugstr_w(NetworkResource), debugstr_w(User),
 164           debugstr_w(Password), debugstr_w(Locale), SecurityFlags, debugstr_w(Authority), pCtx, ppNamespace);
 165
 166     hr = parse_resource( NetworkResource, &server, &namespace );
 167     if (hr != S_OK) return hr;
 168
 169     if (!is_local_machine( server ))
 170     {
 171         FIXME("remote computer not supported\n");
 172         heap_free( server );
 173         heap_free( namespace );
 174         return WBEM_E_TRANSPORT_FAILURE;
 175     }
 176     if (User || Password || Authority)
 177         FIXME("authentication not supported\n");
 178     if (Locale)
 179         FIXME("specific locale not supported\n");
 180     if (SecurityFlags)
 181         FIXME("unsupported flags\n");
 182
 183     hr = WbemServices_create( NULL, namespace, (void **)ppNamespace );
 184     heap_free( namespace );
 185     heap_free( server );
 186     if (SUCCEEDED( hr ))
 187         return WBEM_NO_ERROR;
 188
 189     return WBEM_E_FAILED;
 190 }
 191
 192 static const IWbemLocatorVtbl wbem_locator_vtbl =
 193 {
 194     wbem_locator_QueryInterface,
 195     wbem_locator_AddRef,
 196     wbem_locator_Release,
 197     wbem_locator_ConnectServer
 198 };
 199
 200 HRESULT WbemLocator_create( IUnknown *pUnkOuter, LPVOID *ppObj )
 201 {
 202     wbem_locator *wl;
 203
 204     TRACE("(%p,%p)\n", pUnkOuter, ppObj);
 205
 206     wl = heap_alloc( sizeof(*wl) );
 207     if (!wl) return E_OUTOFMEMORY;
 208
 209     wl->IWbemLocator_iface.lpVtbl = &wbem_locator_vtbl;
 210     wl->refs = 1;
 211
 212     *ppObj = &wl->IWbemLocator_iface;
 213
 214     TRACE("returning iface %p\n", *ppObj);
 215     return S_OK;
 216 }