dlls/setupapi/dirid.c

   1 /*
   2  * Directory id handling
   3  *
   4  * Copyright 2002 Alexandre Julliard for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winreg.h"
  26 #include "winternl.h"
  27 #include "winerror.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "winnls.h"
  31 #include "winspool.h"
  32 #include "setupapi.h"
  33 #include "shlobj.h"
  34 #include "setupapi_private.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(setupapi);
  38
  39 #define MAX_SYSTEM_DIRID DIRID_PRINTPROCESSOR
  40 #define MIN_CSIDL_DIRID 0x4000
  41 #define MAX_CSIDL_DIRID 0x403f
  42
  43 struct user_dirid
  44 {
  45     int    id;
  46     WCHAR *str;
  47 };
  48
  49 static int nb_user_dirids;     /* number of user dirids in use */
  50 static int alloc_user_dirids;  /* number of allocated user dirids */
  51 static struct user_dirid *user_dirids;
  52 static const WCHAR *system_dirids[MAX_SYSTEM_DIRID+1];
  53 static const WCHAR *csidl_dirids[MAX_CSIDL_DIRID-MIN_CSIDL_DIRID+1];
  54
  55 /* retrieve the string for unknown dirids */
  56 static const WCHAR *get_unknown_dirid(void)
  57 {
  58     static WCHAR *unknown_dirid;
  59     static const WCHAR unknown_str[] = {'\\','u','n','k','n','o','w','n',0};
  60
  61     if (!unknown_dirid)
  62     {
  63         UINT len = GetSystemDirectoryW( NULL, 0 ) + lstrlenW(unknown_str);
  64         if (!(unknown_dirid = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return NULL;
  65         GetSystemDirectoryW( unknown_dirid, len );
  66         lstrcatW( unknown_dirid, unknown_str );
  67     }
  68     return unknown_dirid;
  69 }
  70
  71 static const WCHAR *get_csidl_dir(DWORD csidl);
  72
  73 /* create the string for a system dirid */
  74 static const WCHAR *create_system_dirid( int dirid )
  75 {
  76     static const WCHAR Null[]    = {0};
  77     static const WCHAR C_Root[]  = {'C',':','\\',0};
  78     static const WCHAR Drivers[] = {'\\','d','r','i','v','e','r','s',0};
  79     static const WCHAR Inf[]     = {'\\','i','n','f',0};
  80     static const WCHAR Help[]    = {'\\','h','e','l','p',0};
  81     static const WCHAR Fonts[]   = {'\\','f','o','n','t','s',0};
  82     static const WCHAR Viewers[] = {'\\','v','i','e','w','e','r','s',0};
  83     static const WCHAR System[]  = {'\\','s','y','s','t','e','m',0};
  84     static const WCHAR Spool[]   = {'\\','s','p','o','o','l',0};
  85     static const WCHAR UserProfile[] = {'U','S','E','R','P','R','O','F','I','L','E',0};
  86
  87     WCHAR buffer[MAX_PATH+32], *str;
  88     int len;
  89     DWORD needed;
  90
  91     switch(dirid)
  92     {
  93     case DIRID_NULL:
  94         return Null;
  95     case DIRID_WINDOWS:
  96         GetWindowsDirectoryW( buffer, MAX_PATH );
  97         break;
  98     case DIRID_SYSTEM:
  99         GetSystemDirectoryW( buffer, MAX_PATH );
 100         break;
 101     case DIRID_DRIVERS:
 102         GetSystemDirectoryW( buffer, MAX_PATH );
 103         lstrcatW( buffer, Drivers );
 104         break;
 105     case DIRID_INF:
 106         GetWindowsDirectoryW( buffer, MAX_PATH );
 107         lstrcatW( buffer, Inf );
 108         break;
 109     case DIRID_HELP:
 110         GetWindowsDirectoryW( buffer, MAX_PATH );
 111         lstrcatW( buffer, Help );
 112         break;
 113     case DIRID_FONTS:
 114         GetWindowsDirectoryW( buffer, MAX_PATH );
 115         lstrcatW( buffer, Fonts );
 116         break;
 117     case DIRID_VIEWERS:
 118         GetSystemDirectoryW( buffer, MAX_PATH );
 119         lstrcatW( buffer, Viewers );
 120         break;
 121     case DIRID_APPS:
 122         return C_Root;  /* FIXME */
 123     case DIRID_SHARED:
 124         GetWindowsDirectoryW( buffer, MAX_PATH );
 125         break;
 126     case DIRID_BOOT:
 127         return C_Root;  /* FIXME */
 128     case DIRID_SYSTEM16:
 129         GetWindowsDirectoryW( buffer, MAX_PATH );
 130         lstrcatW( buffer, System );
 131         break;
 132     case DIRID_SPOOL:
 133     case DIRID_SPOOLDRIVERS:  /* FIXME */
 134         GetWindowsDirectoryW( buffer, MAX_PATH );
 135         lstrcatW( buffer, Spool );
 136         break;
 137     case DIRID_USERPROFILE:
 138         if (GetEnvironmentVariableW( UserProfile, buffer, MAX_PATH )) break;
 139         return get_csidl_dir(CSIDL_PROFILE);
 140     case DIRID_LOADER:
 141         return C_Root;  /* FIXME */
 142     case DIRID_PRINTPROCESSOR:
 143         if (!GetPrintProcessorDirectoryW(NULL, NULL, 1, (LPBYTE)buffer, sizeof(buffer), &needed))
 144         {
 145             WARN( "cannot retrieve print processor directory\n" );
 146             return get_unknown_dirid();
 147         }
 148         break;
 149     case DIRID_COLOR:  /* FIXME */
 150     default:
 151         FIXME( "unknown dirid %d\n", dirid );
 152         return get_unknown_dirid();
 153     }
 154     len = (lstrlenW(buffer) + 1) * sizeof(WCHAR);
 155     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 156     return str;
 157 }
 158
 159 static const WCHAR *get_csidl_dir( DWORD csidl )
 160 {
 161     WCHAR buffer[MAX_PATH], *str;
 162     int len;
 163
 164     if (!SHGetSpecialFolderPathW( NULL, buffer, csidl, TRUE ))
 165     {
 166         FIXME( "CSIDL %x not found\n", csidl );
 167         return get_unknown_dirid();
 168     }
 169     len = (lstrlenW(buffer) + 1) * sizeof(WCHAR);
 170     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 171     return str;
 172 }
 173
 174 /* retrieve the string corresponding to a dirid, or NULL if none */
 175 const WCHAR *DIRID_get_string( int dirid )
 176 {
 177     int i;
 178
 179     if (dirid == DIRID_ABSOLUTE || dirid == DIRID_ABSOLUTE_16BIT) dirid = DIRID_NULL;
 180
 181     if (dirid >= DIRID_USER)
 182     {
 183         for (i = 0; i < nb_user_dirids; i++)
 184             if (user_dirids[i].id == dirid) return user_dirids[i].str;
 185         WARN("user id %d not found\n", dirid );
 186         return NULL;
 187     }
 188     else if (dirid >= MIN_CSIDL_DIRID)
 189     {
 190         if (dirid > MAX_CSIDL_DIRID) return get_unknown_dirid();
 191         dirid -= MIN_CSIDL_DIRID;
 192         if (!csidl_dirids[dirid]) csidl_dirids[dirid] = get_csidl_dir( dirid );
 193         return csidl_dirids[dirid];
 194     }
 195     else
 196     {
 197         if (dirid > MAX_SYSTEM_DIRID) return get_unknown_dirid();
 198         if (!system_dirids[dirid]) system_dirids[dirid] = create_system_dirid( dirid );
 199         return system_dirids[dirid];
 200     }
 201 }
 202
 203 /* store a user dirid string */
 204 static BOOL store_user_dirid( HINF hinf, int id, WCHAR *str )
 205 {
 206     int i;
 207
 208     for (i = 0; i < nb_user_dirids; i++) if (user_dirids[i].id == id) break;
 209
 210     if (i < nb_user_dirids) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 211     else
 212     {
 213         if (nb_user_dirids >= alloc_user_dirids)
 214         {
 215             int new_size = max( 32, alloc_user_dirids * 2 );
 216
 217             struct user_dirid *new;
 218
 219             if (user_dirids)
 220                 new = HeapReAlloc( GetProcessHeap(), 0, user_dirids,
 221                                                   new_size * sizeof(*new) );
 222             else
 223                 new = HeapAlloc( GetProcessHeap(), 0,
 224                                                   new_size * sizeof(*new) );
 225
 226             if (!new) return FALSE;
 227             user_dirids = new;
 228             alloc_user_dirids = new_size;
 229         }
 230         nb_user_dirids++;
 231     }
 232     user_dirids[i].id  = id;
 233     user_dirids[i].str = str;
 234     TRACE("id %d -> %s\n", id, debugstr_w(str) );
 235     return TRUE;
 236 }
 237
 238
 239 /***********************************************************************
 240  *              SetupSetDirectoryIdA    (SETUPAPI.@)
 241  */
 242 BOOL WINAPI SetupSetDirectoryIdA( HINF hinf, DWORD id, PCSTR dir )
 243 {
 244     UNICODE_STRING dirW;
 245     int i;
 246
 247     if (!id)  /* clear everything */
 248     {
 249         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 250         nb_user_dirids = 0;
 251         return TRUE;
 252     }
 253     if (id < DIRID_USER)
 254     {
 255         SetLastError( ERROR_INVALID_PARAMETER );
 256         return FALSE;
 257     }
 258
 259     /* duplicate the string */
 260     if (!RtlCreateUnicodeStringFromAsciiz( &dirW, dir ))
 261     {
 262         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 263         return FALSE;
 264     }
 265     return store_user_dirid( hinf, id, dirW.Buffer );
 266 }
 267
 268
 269 /***********************************************************************
 270  *              SetupSetDirectoryIdW    (SETUPAPI.@)
 271  */
 272 BOOL WINAPI SetupSetDirectoryIdW( HINF hinf, DWORD id, PCWSTR dir )
 273 {
 274     int i, len;
 275     WCHAR *str;
 276
 277     if (!id)  /* clear everything */
 278     {
 279         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 280         nb_user_dirids = 0;
 281         return TRUE;
 282     }
 283     if (id < DIRID_USER)
 284     {
 285         SetLastError( ERROR_INVALID_PARAMETER );
 286         return FALSE;
 287     }
 288
 289     /* duplicate the string */
 290     len = (lstrlenW(dir)+1) * sizeof(WCHAR);
 291     if (!(str = HeapAlloc( GetProcessHeap(), 0, len ))) return FALSE;
 292     memcpy( str, dir, len );
 293     return store_user_dirid( hinf, id, str );
 294 }