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 "setupapi.h"
  32 #include "shlobj.h"
  33 #include "wine/unicode.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 ) + strlenW(unknown_str);
  64         if (!(unknown_dirid = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return NULL;
  65         GetSystemDirectoryW( unknown_dirid, len );
  66         strcatW( 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
  90     switch(dirid)
  91     {
  92     case DIRID_NULL:
  93         return Null;
  94     case DIRID_WINDOWS:
  95         GetWindowsDirectoryW( buffer, MAX_PATH );
  96         break;
  97     case DIRID_SYSTEM:
  98         GetSystemDirectoryW( buffer, MAX_PATH );
  99         break;
 100     case DIRID_DRIVERS:
 101         GetSystemDirectoryW( buffer, MAX_PATH );
 102         strcatW( buffer, Drivers );
 103         break;
 104     case DIRID_INF:
 105         GetWindowsDirectoryW( buffer, MAX_PATH );
 106         strcatW( buffer, Inf );
 107         break;
 108     case DIRID_HELP:
 109         GetWindowsDirectoryW( buffer, MAX_PATH );
 110         strcatW( buffer, Help );
 111         break;
 112     case DIRID_FONTS:
 113         GetWindowsDirectoryW( buffer, MAX_PATH );
 114         strcatW( buffer, Fonts );
 115         break;
 116     case DIRID_VIEWERS:
 117         GetSystemDirectoryW( buffer, MAX_PATH );
 118         strcatW( buffer, Viewers );
 119         break;
 120     case DIRID_APPS:
 121         return C_Root;  /* FIXME */
 122     case DIRID_SHARED:
 123         GetWindowsDirectoryW( buffer, MAX_PATH );
 124         break;
 125     case DIRID_BOOT:
 126         return C_Root;  /* FIXME */
 127     case DIRID_SYSTEM16:
 128         GetWindowsDirectoryW( buffer, MAX_PATH );
 129         strcatW( buffer, System );
 130         break;
 131     case DIRID_SPOOL:
 132     case DIRID_SPOOLDRIVERS:  /* FIXME */
 133         GetWindowsDirectoryW( buffer, MAX_PATH );
 134         strcatW( buffer, Spool );
 135         break;
 136     case DIRID_USERPROFILE:
 137         if (GetEnvironmentVariableW( UserProfile, buffer, MAX_PATH )) break;
 138         return get_csidl_dir(CSIDL_PROFILE);
 139     case DIRID_LOADER:
 140         return C_Root;  /* FIXME */
 141     case DIRID_COLOR:  /* FIXME */
 142     case DIRID_PRINTPROCESSOR:  /* FIXME */
 143     default:
 144         FIXME( "unknown dirid %d\n", dirid );
 145         return get_unknown_dirid();
 146     }
 147     len = (strlenW(buffer) + 1) * sizeof(WCHAR);
 148     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 149     return str;
 150 }
 151
 152 static const WCHAR *get_csidl_dir( DWORD csidl )
 153 {
 154     WCHAR buffer[MAX_PATH], *str;
 155     int len;
 156
 157     if (!SHGetSpecialFolderPathW( NULL, buffer, csidl, TRUE ))
 158     {
 159         FIXME( "CSIDL %lx not found\n", csidl );
 160         return get_unknown_dirid();
 161     }
 162     len = (strlenW(buffer) + 1) * sizeof(WCHAR);
 163     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 164     return str;
 165 }
 166
 167 /* retrieve the string corresponding to a dirid, or NULL if none */
 168 const WCHAR *DIRID_get_string( int dirid )
 169 {
 170     int i;
 171
 172     if (dirid == DIRID_ABSOLUTE || dirid == DIRID_ABSOLUTE_16BIT) dirid = DIRID_NULL;
 173
 174     if (dirid >= DIRID_USER)
 175     {
 176         for (i = 0; i < nb_user_dirids; i++)
 177             if (user_dirids[i].id == dirid) return user_dirids[i].str;
 178         WARN("user id %d not found\n", dirid );
 179         return NULL;
 180     }
 181     else if (dirid >= MIN_CSIDL_DIRID)
 182     {
 183         if (dirid > MAX_CSIDL_DIRID) return get_unknown_dirid();
 184         dirid -= MIN_CSIDL_DIRID;
 185         if (!csidl_dirids[dirid]) csidl_dirids[dirid] = get_csidl_dir( dirid );
 186         return csidl_dirids[dirid];
 187     }
 188     else
 189     {
 190         if (dirid > MAX_SYSTEM_DIRID) return get_unknown_dirid();
 191         if (!system_dirids[dirid]) system_dirids[dirid] = create_system_dirid( dirid );
 192         return system_dirids[dirid];
 193     }
 194 }
 195
 196 /* store a user dirid string */
 197 static BOOL store_user_dirid( HINF hinf, int id, WCHAR *str )
 198 {
 199     int i;
 200
 201     for (i = 0; i < nb_user_dirids; i++) if (user_dirids[i].id == id) break;
 202
 203     if (i < nb_user_dirids) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 204     else
 205     {
 206         if (nb_user_dirids >= alloc_user_dirids)
 207         {
 208             int new_size = max( 32, alloc_user_dirids * 2 );
 209
 210             struct user_dirid *new;
 211
 212             if (user_dirids)
 213                 new = HeapReAlloc( GetProcessHeap(), 0, user_dirids,
 214                                                   new_size * sizeof(*new) );
 215             else
 216                 new = HeapAlloc( GetProcessHeap(), 0,
 217                                                   new_size * sizeof(*new) );
 218
 219             if (!new) return FALSE;
 220             user_dirids = new;
 221             alloc_user_dirids = new_size;
 222         }
 223         nb_user_dirids++;
 224     }
 225     user_dirids[i].id  = id;
 226     user_dirids[i].str = str;
 227     TRACE("id %d -> %s\n", id, debugstr_w(str) );
 228     return TRUE;
 229 }
 230
 231
 232 /***********************************************************************
 233  *              SetupSetDirectoryIdA    (SETUPAPI.@)
 234  */
 235 BOOL WINAPI SetupSetDirectoryIdA( HINF hinf, DWORD id, PCSTR dir )
 236 {
 237     UNICODE_STRING dirW;
 238     int i;
 239
 240     if (!id)  /* clear everything */
 241     {
 242         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 243         nb_user_dirids = 0;
 244         return TRUE;
 245     }
 246     if (id < DIRID_USER)
 247     {
 248         SetLastError( ERROR_INVALID_PARAMETER );
 249         return FALSE;
 250     }
 251
 252     /* duplicate the string */
 253     if (!RtlCreateUnicodeStringFromAsciiz( &dirW, dir ))
 254     {
 255         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 256         return FALSE;
 257     }
 258     return store_user_dirid( hinf, id, dirW.Buffer );
 259 }
 260
 261
 262 /***********************************************************************
 263  *              SetupSetDirectoryIdW    (SETUPAPI.@)
 264  */
 265 BOOL WINAPI SetupSetDirectoryIdW( HINF hinf, DWORD id, PCWSTR dir )
 266 {
 267     int i, len;
 268     WCHAR *str;
 269
 270     if (!id)  /* clear everything */
 271     {
 272         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 273         nb_user_dirids = 0;
 274         return TRUE;
 275     }
 276     if (id < DIRID_USER)
 277     {
 278         SetLastError( ERROR_INVALID_PARAMETER );
 279         return FALSE;
 280     }
 281
 282     /* duplicate the string */
 283     len = (strlenW(dir)+1) * sizeof(WCHAR);
 284     if (!(str = HeapAlloc( GetProcessHeap(), 0, len ))) return FALSE;
 285     memcpy( str, dir, len );
 286     return store_user_dirid( hinf, id, str );
 287 }