dll/win32/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 "setupapi_private.h"
  22
  23 #define MAX_SYSTEM_DIRID DIRID_PRINTPROCESSOR
  24 #define MIN_CSIDL_DIRID 0x4000
  25 #define MAX_CSIDL_DIRID 0x403f
  26
  27 struct user_dirid
  28 {
  29     int    id;
  30     WCHAR *str;
  31 };
  32
  33 static int nb_user_dirids;     /* number of user dirids in use */
  34 static int alloc_user_dirids;  /* number of allocated user dirids */
  35 static struct user_dirid *user_dirids;
  36 static const WCHAR *system_dirids[MAX_SYSTEM_DIRID+1];
  37 static const WCHAR *csidl_dirids[MAX_CSIDL_DIRID-MIN_CSIDL_DIRID+1];
  38
  39 /* retrieve the string for unknown dirids */
  40 static const WCHAR *get_unknown_dirid(void)
  41 {
  42     static WCHAR *unknown_dirid;
  43     static const WCHAR unknown_str[] = {'\\','u','n','k','n','o','w','n',0};
  44
  45     if (!unknown_dirid)
  46     {
  47         UINT len = GetSystemDirectoryW( NULL, 0 ) + strlenW(unknown_str);
  48         if (!(unknown_dirid = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return NULL;
  49         GetSystemDirectoryW( unknown_dirid, len );
  50         strcatW( unknown_dirid, unknown_str );
  51     }
  52     return unknown_dirid;
  53 }
  54
  55 static const WCHAR *get_csidl_dir(DWORD csidl);
  56
  57 /* create the string for a system dirid */
  58 static const WCHAR *create_system_dirid( int dirid )
  59 {
  60     static const WCHAR Null[]    = {0};
  61     static const WCHAR C_Root[]  = {'C',':','\\',0};
  62     static const WCHAR Drivers[] = {'\\','d','r','i','v','e','r','s',0};
  63     static const WCHAR Inf[]     = {'\\','i','n','f',0};
  64     static const WCHAR Help[]    = {'\\','h','e','l','p',0};
  65     static const WCHAR Fonts[]   = {'\\','f','o','n','t','s',0};
  66     static const WCHAR Viewers[] = {'\\','v','i','e','w','e','r','s',0};
  67     static const WCHAR System[]  = {'\\','s','y','s','t','e','m',0};
  68     static const WCHAR Spool[]   = {'\\','s','p','o','o','l',0};
  69     static const WCHAR UserProfile[] = {'U','S','E','R','P','R','O','F','I','L','E',0};
  70
  71     WCHAR buffer[MAX_PATH+32], *str;
  72     int len;
  73
  74     switch(dirid)
  75     {
  76     case DIRID_NULL:
  77         return Null;
  78     case DIRID_WINDOWS:
  79         GetWindowsDirectoryW( buffer, MAX_PATH );
  80         break;
  81     case DIRID_SYSTEM:
  82         GetSystemDirectoryW( buffer, MAX_PATH );
  83         break;
  84     case DIRID_DRIVERS:
  85         GetSystemDirectoryW( buffer, MAX_PATH );
  86         strcatW( buffer, Drivers );
  87         break;
  88     case DIRID_INF:
  89         GetWindowsDirectoryW( buffer, MAX_PATH );
  90         strcatW( buffer, Inf );
  91         break;
  92     case DIRID_HELP:
  93         GetWindowsDirectoryW( buffer, MAX_PATH );
  94         strcatW( buffer, Help );
  95         break;
  96     case DIRID_FONTS:
  97         GetWindowsDirectoryW( buffer, MAX_PATH );
  98         strcatW( buffer, Fonts );
  99         break;
 100     case DIRID_VIEWERS:
 101         GetSystemDirectoryW( buffer, MAX_PATH );
 102         strcatW( buffer, Viewers );
 103         break;
 104     case DIRID_APPS:
 105         return C_Root;  /* FIXME */
 106     case DIRID_SHARED:
 107         GetWindowsDirectoryW( buffer, MAX_PATH );
 108         break;
 109     case DIRID_BOOT:
 110         return C_Root;  /* FIXME */
 111     case DIRID_SYSTEM16:
 112         GetWindowsDirectoryW( buffer, MAX_PATH );
 113         strcatW( buffer, System );
 114         break;
 115     case DIRID_SPOOL:
 116     case DIRID_SPOOLDRIVERS:  /* FIXME */
 117         GetWindowsDirectoryW( buffer, MAX_PATH );
 118         strcatW( buffer, Spool );
 119         break;
 120     case DIRID_USERPROFILE:
 121         if (GetEnvironmentVariableW( UserProfile, buffer, MAX_PATH )) break;
 122         return get_csidl_dir(CSIDL_PROFILE);
 123     case DIRID_LOADER:
 124         return C_Root;  /* FIXME */
 125     case DIRID_COLOR:  /* FIXME */
 126     case DIRID_PRINTPROCESSOR:  /* FIXME */
 127     default:
 128         FIXME( "unknown dirid %d\n", dirid );
 129         return get_unknown_dirid();
 130     }
 131     len = (strlenW(buffer) + 1) * sizeof(WCHAR);
 132     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 133     return str;
 134 }
 135
 136 static const WCHAR *get_csidl_dir( DWORD csidl )
 137 {
 138     WCHAR buffer[MAX_PATH], *str;
 139     int len;
 140
 141     if (!SHGetSpecialFolderPathW( NULL, buffer, csidl, TRUE ))
 142     {
 143         FIXME( "CSIDL %x not found\n", csidl );
 144         return get_unknown_dirid();
 145     }
 146     len = (strlenW(buffer) + 1) * sizeof(WCHAR);
 147     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 148     return str;
 149 }
 150
 151 /* retrieve the string corresponding to a dirid, or NULL if none */
 152 const WCHAR *DIRID_get_string( int dirid )
 153 {
 154     int i;
 155
 156     if (dirid == DIRID_ABSOLUTE || dirid == DIRID_ABSOLUTE_16BIT) dirid = DIRID_NULL;
 157
 158     if (dirid >= DIRID_USER)
 159     {
 160         for (i = 0; i < nb_user_dirids; i++)
 161             if (user_dirids[i].id == dirid) return user_dirids[i].str;
 162         WARN("user id %d not found\n", dirid );
 163         return NULL;
 164     }
 165     else if (dirid >= MIN_CSIDL_DIRID)
 166     {
 167         if (dirid > MAX_CSIDL_DIRID) return get_unknown_dirid();
 168         dirid -= MIN_CSIDL_DIRID;
 169         if (!csidl_dirids[dirid]) csidl_dirids[dirid] = get_csidl_dir( dirid );
 170         return csidl_dirids[dirid];
 171     }
 172     else
 173     {
 174         if (dirid > MAX_SYSTEM_DIRID) return get_unknown_dirid();
 175         if (!system_dirids[dirid]) system_dirids[dirid] = create_system_dirid( dirid );
 176         return system_dirids[dirid];
 177     }
 178 }
 179
 180 /* store a user dirid string */
 181 static BOOL store_user_dirid( HINF hinf, int id, WCHAR *str )
 182 {
 183     int i;
 184
 185     for (i = 0; i < nb_user_dirids; i++) if (user_dirids[i].id == id) break;
 186
 187     if (i < nb_user_dirids) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 188     else
 189     {
 190         if (nb_user_dirids >= alloc_user_dirids)
 191         {
 192             int new_size = max( 32, alloc_user_dirids * 2 );
 193
 194             struct user_dirid *new;
 195
 196             if (user_dirids)
 197                 new = HeapReAlloc( GetProcessHeap(), 0, user_dirids,
 198                                                   new_size * sizeof(*new) );
 199             else
 200                 new = HeapAlloc( GetProcessHeap(), 0,
 201                                                   new_size * sizeof(*new) );
 202
 203             if (!new) return FALSE;
 204             user_dirids = new;
 205             alloc_user_dirids = new_size;
 206         }
 207         nb_user_dirids++;
 208     }
 209     user_dirids[i].id  = id;
 210     user_dirids[i].str = str;
 211     TRACE("id %d -> %s\n", id, debugstr_w(str) );
 212     return TRUE;
 213 }
 214
 215
 216 /***********************************************************************
 217  *              SetupSetDirectoryIdA    (SETUPAPI.@)
 218  */
 219 BOOL WINAPI SetupSetDirectoryIdA( HINF hinf, DWORD id, PCSTR dir )
 220 {
 221     UNICODE_STRING dirW;
 222     int i;
 223
 224     if (!id)  /* clear everything */
 225     {
 226         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 227         nb_user_dirids = 0;
 228         return TRUE;
 229     }
 230     if (id < DIRID_USER)
 231     {
 232         SetLastError( ERROR_INVALID_PARAMETER );
 233         return FALSE;
 234     }
 235
 236     /* duplicate the string */
 237     if (!RtlCreateUnicodeStringFromAsciiz( &dirW, dir ))
 238     {
 239         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 240         return FALSE;
 241     }
 242     return store_user_dirid( hinf, id, dirW.Buffer );
 243 }
 244
 245
 246 /***********************************************************************
 247  *              SetupSetDirectoryIdW    (SETUPAPI.@)
 248  */
 249 BOOL WINAPI SetupSetDirectoryIdW( HINF hinf, DWORD id, PCWSTR dir )
 250 {
 251     int i, len;
 252     WCHAR *str;
 253
 254     if (!id)  /* clear everything */
 255     {
 256         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 257         nb_user_dirids = 0;
 258         return TRUE;
 259     }
 260     if (id < DIRID_USER)
 261     {
 262         SetLastError( ERROR_INVALID_PARAMETER );
 263         return FALSE;
 264     }
 265
 266     /* duplicate the string */
 267     len = (strlenW(dir)+1) * sizeof(WCHAR);
 268     if (!(str = HeapAlloc( GetProcessHeap(), 0, len ))) return FALSE;
 269     memcpy( str, dir, len );
 270     return store_user_dirid( hinf, id, str );
 271 }