programs/wmic/main.c

   1 /*
   2  * Copyright 2010 Louis Lenders
   3  * Copyright 2012 Hans Leidekker for CodeWeavers
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #define COBJMACROS
  21
  22 #include <stdio.h>
  23 #include "windows.h"
  24 #include "ocidl.h"
  25 #include "initguid.h"
  26 #include "objidl.h"
  27 #include "wbemcli.h"
  28 #include "wmic.h"
  29
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(wmic);
  33
  34 static const struct
  35 {
  36     const WCHAR *alias;
  37     const WCHAR *class;
  38 }
  39 alias_map[] =
  40 {
  41     { L"bios", L"Win32_BIOS" },
  42     { L"computersystem", L"Win32_ComputerSystem" },
  43     { L"cpu", L"Win32_Processor" },
  44     { L"LogicalDisk", L"Win32_LogicalDisk" },
  45     { L"nic", L"Win32_NetworkAdapter" },
  46     { L"os", L"Win32_OperatingSystem" },
  47     { L"process", L"Win32_Process" }
  48 };
  49
  50 static const WCHAR *find_class( const WCHAR *alias )
  51 {
  52     unsigned int i;
  53
  54     for (i = 0; i < ARRAY_SIZE(alias_map); i++)
  55     {
  56         if (!wcsicmp( alias, alias_map[i].alias )) return alias_map[i].class;
  57     }
  58     return NULL;
  59 }
  60
  61 static inline WCHAR *strdupW( const WCHAR *src )
  62 {
  63     WCHAR *dst;
  64     if (!src) return NULL;
  65     if (!(dst = HeapAlloc( GetProcessHeap(), 0, (lstrlenW( src ) + 1) * sizeof(WCHAR) ))) return NULL;
  66     lstrcpyW( dst, src );
  67     return dst;
  68 }
  69
  70 static WCHAR *find_prop( IWbemClassObject *class, const WCHAR *prop )
  71 {
  72     SAFEARRAY *sa;
  73     WCHAR *ret = NULL;
  74     LONG i, last_index = 0;
  75     BSTR str;
  76
  77     if (IWbemClassObject_GetNames( class, NULL, WBEM_FLAG_ALWAYS, NULL, &sa ) != S_OK) return NULL;
  78
  79     SafeArrayGetUBound( sa, 1, &last_index );
  80     for (i = 0; i <= last_index; i++)
  81     {
  82         SafeArrayGetElement( sa, &i, &str );
  83         if (!wcsicmp( str, prop ))
  84         {
  85             ret = strdupW( str );
  86             break;
  87         }
  88     }
  89     SafeArrayDestroy( sa );
  90     return ret;
  91 }
  92
  93 static int WINAPIV output_string( HANDLE handle, const WCHAR *msg, ... )
  94 {
  95     __ms_va_list va_args;
  96     int len;
  97     DWORD count;
  98     WCHAR buffer[8192];
  99
 100     __ms_va_start( va_args, msg );
 101     len = vswprintf( buffer, ARRAY_SIZE(buffer), msg, va_args );
 102     __ms_va_end( va_args );
 103
 104     if (!WriteConsoleW( handle, buffer, len, &count, NULL ))
 105         WriteFile( handle, buffer, len * sizeof(WCHAR), &count, FALSE );
 106
 107     return count;
 108 }
 109
 110 static int output_error( int msg )
 111 {
 112     WCHAR buffer[8192];
 113
 114     LoadStringW( GetModuleHandleW(NULL), msg, buffer, ARRAY_SIZE(buffer));
 115     return output_string( GetStdHandle(STD_ERROR_HANDLE), L"%s", buffer );
 116 }
 117
 118 static int output_header( const WCHAR *prop, ULONG column_width )
 119 {
 120     static const WCHAR bomW[] = {0xfeff};
 121     int len;
 122     DWORD count;
 123     WCHAR buffer[8192];
 124
 125     len = swprintf( buffer, ARRAY_SIZE(buffer), L"%-*s\r\n", column_width, prop );
 126
 127     if (!WriteConsoleW( GetStdHandle(STD_OUTPUT_HANDLE), buffer, len, &count, NULL )) /* redirected */
 128     {
 129         WriteFile( GetStdHandle(STD_OUTPUT_HANDLE), bomW, sizeof(bomW), &count, FALSE );
 130         WriteFile( GetStdHandle(STD_OUTPUT_HANDLE), buffer, len * sizeof(WCHAR), &count, FALSE );
 131         count += sizeof(bomW);
 132     }
 133
 134     return count;
 135 }
 136
 137 static int output_line( const WCHAR *str, ULONG column_width )
 138 {
 139     return output_string( GetStdHandle(STD_OUTPUT_HANDLE), L"%-*s\r\n", column_width, str );
 140 }
 141
 142 static int query_prop( const WCHAR *class, const WCHAR *propname )
 143 {
 144     HRESULT hr;
 145     IWbemLocator *locator = NULL;
 146     IWbemServices *services = NULL;
 147     IEnumWbemClassObject *result = NULL;
 148     LONG flags = WBEM_FLAG_RETURN_IMMEDIATELY | WBEM_FLAG_FORWARD_ONLY;
 149     BSTR path = NULL, wql = NULL, query = NULL;
 150     WCHAR *prop = NULL;
 151     BOOL first = TRUE;
 152     int len, ret = -1;
 153     IWbemClassObject *obj;
 154     ULONG count, width = 0;
 155     VARIANT v;
 156
 157     WINE_TRACE("%s, %s\n", debugstr_w(class), debugstr_w(propname));
 158
 159     CoInitialize( NULL );
 160     CoInitializeSecurity( NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT,
 161                           RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL );
 162
 163     hr = CoCreateInstance( &CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER, &IID_IWbemLocator,
 164                            (void **)&locator );
 165     if (hr != S_OK) goto done;
 166
 167     if (!(path = SysAllocString(L"ROOT\\CIMV2" ))) goto done;
 168     hr = IWbemLocator_ConnectServer( locator, path, NULL, NULL, NULL, 0, NULL, NULL, &services );
 169     if (hr != S_OK) goto done;
 170
 171     len = lstrlenW( class ) + ARRAY_SIZE(L"SELECT * FROM ");
 172     if (!(query = SysAllocStringLen( NULL, len ))) goto done;
 173     lstrcpyW( query, L"SELECT * FROM " );
 174     lstrcatW( query, class );
 175
 176     if (!(wql = SysAllocString(L"WQL" ))) goto done;
 177     hr = IWbemServices_ExecQuery( services, wql, query, flags, NULL, &result );
 178     if (hr != S_OK) goto done;
 179
 180     for (;;) /* get column width */
 181     {
 182         IEnumWbemClassObject_Next( result, WBEM_INFINITE, 1, &obj, &count );
 183         if (!count) break;
 184
 185         if (!prop && !(prop = find_prop( obj, propname )))
 186         {
 187             output_error( STRING_INVALID_QUERY );
 188             goto done;
 189         }
 190         if (IWbemClassObject_Get( obj, prop, 0, &v, NULL, NULL ) == WBEM_S_NO_ERROR)
 191         {
 192             VariantChangeType( &v, &v, 0, VT_BSTR );
 193             width = max( lstrlenW( V_BSTR( &v ) ), width );
 194             VariantClear( &v );
 195         }
 196         IWbemClassObject_Release( obj );
 197     }
 198     width += 2;
 199
 200     IEnumWbemClassObject_Reset( result );
 201     for (;;)
 202     {
 203         IEnumWbemClassObject_Next( result, WBEM_INFINITE, 1, &obj, &count );
 204         if (!count) break;
 205
 206         if (first)
 207         {
 208             output_header( prop, width );
 209             first = FALSE;
 210         }
 211         if (IWbemClassObject_Get( obj, prop, 0, &v, NULL, NULL ) == WBEM_S_NO_ERROR)
 212         {
 213             VariantChangeType( &v, &v, 0, VT_BSTR );
 214             output_line( V_BSTR( &v ), width );
 215             VariantClear( &v );
 216         }
 217         IWbemClassObject_Release( obj );
 218     }
 219     ret = 0;
 220
 221 done:
 222     if (result) IEnumWbemClassObject_Release( result );
 223     if (services) IWbemServices_Release( services );
 224     if (locator) IWbemLocator_Release( locator );
 225     SysFreeString( path );
 226     SysFreeString( query );
 227     SysFreeString( wql );
 228     HeapFree( GetProcessHeap(), 0, prop );
 229     CoUninitialize();
 230     return ret;
 231 }
 232
 233 int __cdecl wmain(int argc, WCHAR *argv[])
 234 {
 235     const WCHAR *class, *value;
 236     int i;
 237
 238     for (i = 1; i < argc && argv[i][0] == '/'; i++)
 239         WINE_FIXME( "command line switch %s not supported\n", debugstr_w(argv[i]) );
 240
 241     if (i >= argc)
 242         goto not_supported;
 243
 244     if (!wcsicmp( argv[i], L"quit" ) || !wcsicmp( argv[i], L"exit" ))
 245     {
 246         return 0;
 247     }
 248
 249     if (!wcsicmp( argv[i], L"class") || !wcsicmp( argv[i], L"context" ))
 250     {
 251         WINE_FIXME( "command %s not supported\n", debugstr_w(argv[i]) );
 252         goto not_supported;
 253     }
 254
 255     if (!wcsicmp( argv[i], L"path" ))
 256     {
 257         if (++i >= argc)
 258         {
 259             output_error( STRING_INVALID_PATH );
 260             return 1;
 261         }
 262         class = argv[i];
 263     }
 264     else
 265     {
 266         class = find_class( argv[i] );
 267         if (!class)
 268         {
 269             output_error( STRING_ALIAS_NOT_FOUND );
 270             return 1;
 271         }
 272     }
 273
 274     if (++i >= argc)
 275         goto not_supported;
 276
 277     if (!wcsicmp( argv[i], L"get" ))
 278     {
 279         if (++i >= argc)
 280             goto not_supported;
 281         value = argv[i];
 282         return query_prop( class, value );
 283     }
 284
 285 not_supported:
 286     output_error( STRING_CMDLINE_NOT_SUPPORTED );
 287     return 1;
 288 }