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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 "wine/unicode.h"
  33 #include "setupapi_private.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(setupapi);
  37
  38 #define MAX_SYSTEM_DIRID DIRID_PRINTPROCESSOR
  39
  40 struct user_dirid
  41 {
  42     int    id;
  43     WCHAR *str;
  44 };
  45
  46 static int nb_user_dirids;     /* number of user dirids in use */
  47 static int alloc_user_dirids;  /* number of allocated user dirids */
  48 static struct user_dirid *user_dirids;
  49 static const WCHAR *system_dirids[MAX_SYSTEM_DIRID+1];
  50
  51 /* retrieve the string for unknown dirids */
  52 static const WCHAR *get_unknown_dirid(void)
  53 {
  54     static WCHAR *unknown_dirid;
  55     static const WCHAR unknown_str[] = {'\\','u','n','k','n','o','w','n',0};
  56
  57     if (!unknown_dirid)
  58     {
  59         UINT len = GetSystemDirectoryW( NULL, 0 ) + strlenW(unknown_str);
  60         if (!(unknown_dirid = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return NULL;
  61         GetSystemDirectoryW( unknown_dirid, len );
  62         strcatW( unknown_dirid, unknown_str );
  63     }
  64     return unknown_dirid;
  65 }
  66
  67 /* create the string for a system dirid */
  68 static const WCHAR *create_system_dirid( int dirid )
  69 {
  70     static const WCHAR Null[]    = {0};
  71     static const WCHAR C_Root[]  = {'C',':','\\',0};
  72     static const WCHAR Drivers[] = {'\\','d','r','i','v','e','r','s',0};
  73     static const WCHAR Inf[]     = {'\\','i','n','f',0};
  74     static const WCHAR Help[]    = {'\\','h','e','l','p',0};
  75     static const WCHAR Fonts[]   = {'\\','f','o','n','t','s',0};
  76     static const WCHAR Viewers[] = {'\\','v','i','e','w','e','r','s',0};
  77     static const WCHAR System[]  = {'\\','s','y','s','t','e','m',0};
  78     static const WCHAR Spool[]   = {'\\','s','p','o','o','l',0};
  79
  80     WCHAR buffer[MAX_PATH+16], *str;
  81     int len;
  82
  83     switch(dirid)
  84     {
  85     case DIRID_NULL:
  86         return Null;
  87     case DIRID_WINDOWS:
  88         GetWindowsDirectoryW( buffer, MAX_PATH );
  89         break;
  90     case DIRID_SYSTEM:
  91         GetSystemDirectoryW( buffer, MAX_PATH );
  92         break;
  93     case DIRID_DRIVERS:
  94         GetSystemDirectoryW( buffer, MAX_PATH );
  95         strcatW( buffer, Drivers );
  96         break;
  97     case DIRID_INF:
  98         GetWindowsDirectoryW( buffer, MAX_PATH );
  99         strcatW( buffer, Inf );
 100         break;
 101     case DIRID_HELP:
 102         GetWindowsDirectoryW( buffer, MAX_PATH );
 103         strcatW( buffer, Help );
 104         break;
 105     case DIRID_FONTS:
 106         GetWindowsDirectoryW( buffer, MAX_PATH );
 107         strcatW( buffer, Fonts );
 108         break;
 109     case DIRID_VIEWERS:
 110         GetSystemDirectoryW( buffer, MAX_PATH );
 111         strcatW( buffer, Viewers );
 112         break;
 113     case DIRID_APPS:
 114         return C_Root;  /* FIXME */
 115     case DIRID_SHARED:
 116         GetWindowsDirectoryW( buffer, MAX_PATH );
 117         break;
 118     case DIRID_BOOT:
 119         return C_Root;  /* FIXME */
 120     case DIRID_SYSTEM16:
 121         GetWindowsDirectoryW( buffer, MAX_PATH );
 122         strcatW( buffer, System );
 123         break;
 124     case DIRID_SPOOL:
 125     case DIRID_SPOOLDRIVERS:  /* FIXME */
 126         GetWindowsDirectoryW( buffer, MAX_PATH );
 127         strcatW( buffer, Spool );
 128         break;
 129     case DIRID_LOADER:
 130         return C_Root;  /* FIXME */
 131     case DIRID_USERPROFILE:  /* FIXME */
 132     case DIRID_COLOR:  /* FIXME */
 133     case DIRID_PRINTPROCESSOR:  /* FIXME */
 134     default:
 135         FIXME( "unknown dirid %d\n", dirid );
 136         return get_unknown_dirid();
 137     }
 138     len = (strlenW(buffer) + 1) * sizeof(WCHAR);
 139     if ((str = HeapAlloc( GetProcessHeap(), 0, len ))) memcpy( str, buffer, len );
 140     return str;
 141 }
 142
 143 /* retrieve the string corresponding to a dirid, or NULL if none */
 144 const WCHAR *DIRID_get_string( HINF hinf, int dirid )
 145 {
 146     int i;
 147
 148     if (dirid == DIRID_ABSOLUTE || dirid == DIRID_ABSOLUTE_16BIT) dirid = DIRID_NULL;
 149
 150     if (dirid >= DIRID_USER)
 151     {
 152         for (i = 0; i < nb_user_dirids; i++)
 153             if (user_dirids[i].id == dirid) return user_dirids[i].str;
 154         ERR("user id %d not found\n", dirid );
 155         return NULL;
 156     }
 157     else
 158     {
 159         if (dirid > MAX_SYSTEM_DIRID) return get_unknown_dirid();
 160         if (dirid == DIRID_SRCPATH) return PARSER_get_src_root( hinf );
 161         if (!system_dirids[dirid]) system_dirids[dirid] = create_system_dirid( dirid );
 162         return system_dirids[dirid];
 163     }
 164 }
 165
 166 /* store a user dirid string */
 167 static BOOL store_user_dirid( HINF hinf, int id, WCHAR *str )
 168 {
 169     int i;
 170
 171     for (i = 0; i < nb_user_dirids; i++) if (user_dirids[i].id == id) break;
 172
 173     if (i < nb_user_dirids) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 174     else
 175     {
 176         if (nb_user_dirids >= alloc_user_dirids)
 177         {
 178             int new_size = max( 32, alloc_user_dirids * 2 );
 179             struct user_dirid *new = HeapReAlloc( GetProcessHeap(), 0, user_dirids,
 180                                                   new_size * sizeof(*new) );
 181             if (!new) return FALSE;
 182             user_dirids = new;
 183             alloc_user_dirids = new_size;
 184         }
 185         nb_user_dirids++;
 186     }
 187     user_dirids[i].id  = id;
 188     user_dirids[i].str = str;
 189     TRACE("id %d -> %s\n", id, debugstr_w(str) );
 190     return TRUE;
 191 }
 192
 193
 194 /***********************************************************************
 195  *              SetupSetDirectoryIdA    (SETUPAPI.@)
 196  */
 197 BOOL WINAPI SetupSetDirectoryIdA( HINF hinf, DWORD id, PCSTR dir )
 198 {
 199     UNICODE_STRING dirW;
 200     int i;
 201
 202     if (!id)  /* clear everything */
 203     {
 204         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 205         nb_user_dirids = 0;
 206         return TRUE;
 207     }
 208     if (id < DIRID_USER)
 209     {
 210         SetLastError( ERROR_INVALID_PARAMETER );
 211         return FALSE;
 212     }
 213
 214     /* duplicate the string */
 215     if (!RtlCreateUnicodeStringFromAsciiz( &dirW, dir ))
 216     {
 217         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 218         return FALSE;
 219     }
 220     return store_user_dirid( hinf, id, dirW.Buffer );
 221 }
 222
 223
 224 /***********************************************************************
 225  *              SetupSetDirectoryIdW    (SETUPAPI.@)
 226  */
 227 BOOL WINAPI SetupSetDirectoryIdW( HINF hinf, DWORD id, PCWSTR dir )
 228 {
 229     int i, len;
 230     WCHAR *str;
 231
 232     if (!id)  /* clear everything */
 233     {
 234         for (i = 0; i < nb_user_dirids; i++) HeapFree( GetProcessHeap(), 0, user_dirids[i].str );
 235         nb_user_dirids = 0;
 236         return TRUE;
 237     }
 238     if (id < DIRID_USER)
 239     {
 240         SetLastError( ERROR_INVALID_PARAMETER );
 241         return FALSE;
 242     }
 243
 244     /* duplicate the string */
 245     len = (strlenW(dir)+1) * sizeof(WCHAR);
 246     if (!(str = HeapAlloc( GetProcessHeap(), 0, len ))) return FALSE;
 247     memcpy( str, dir, len );
 248     return store_user_dirid( hinf, id, str );
 249 }