mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-22 10:19:57 +01:00
621 lines
14 KiB
C
621 lines
14 KiB
C
/* get-path.c - Utility functions for the W32 API
|
||
Copyright (C) 1999 Free Software Foundation, Inc
|
||
Copyright (C) 2001 Werner Koch (dd9jn)
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||
Copyright (C) 2001, 2002, 2003, 2004, 2007 g10 Code GmbH
|
||
|
||
This file is part of DirMngr.
|
||
|
||
DirMngr is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
DirMngr is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
||
02111-1307, USA */
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||
|
||
#error Code has been replaced by common/homedir.c
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||
|
||
#ifdef HAVE_CONFIG_H
|
||
#include <config.h>
|
||
#endif
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <assert.h>
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||
#include <errno.h>
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||
#include <sys/time.h>
|
||
#include <sys/types.h>
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||
#include <signal.h>
|
||
#include <fcntl.h>
|
||
#ifdef HAVE_W32_SYSTEM
|
||
#include <windows.h>
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||
#include <shlobj.h>
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||
#include <io.h>
|
||
#endif
|
||
|
||
#include "util.h"
|
||
|
||
#ifdef HAVE_W32_SYSTEM
|
||
#define GNUPG_DEFAULT_HOMEDIR "c:/gnupg"
|
||
#elif defined(__VMS)
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||
#define GNUPG_DEFAULT_HOMEDIR "/SYS\$LOGIN/gnupg"
|
||
#else
|
||
#define GNUPG_DEFAULT_HOMEDIR "~/.gnupg"
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||
#endif
|
||
|
||
#ifdef HAVE_DOSISH_SYSTEM
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||
#define DIRSEP_C '\\'
|
||
#define DIRSEP_S "\\"
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||
#else
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||
#define DIRSEP_C '/'
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||
#define DIRSEP_S "/"
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||
#endif
|
||
|
||
|
||
#ifdef HAVE_W32_SYSTEM
|
||
#define RTLD_LAZY 0
|
||
|
||
static __inline__ void *
|
||
dlopen (const char * name, int flag)
|
||
{
|
||
void * hd = LoadLibrary (name);
|
||
return hd;
|
||
}
|
||
|
||
static __inline__ void *
|
||
dlsym (void * hd, const char * sym)
|
||
{
|
||
if (hd && sym)
|
||
{
|
||
void * fnc = GetProcAddress (hd, sym);
|
||
if (!fnc)
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||
return NULL;
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||
return fnc;
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||
}
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||
return NULL;
|
||
}
|
||
|
||
static __inline__ int
|
||
dlclose (void * hd)
|
||
{
|
||
if (hd)
|
||
{
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||
FreeLibrary (hd);
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||
return 0;
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||
}
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||
return -1;
|
||
}
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||
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||
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||
/* Return a string from the W32 Registry or NULL in case of error.
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||
Caller must release the return value. A NULL for root is an alias
|
||
for HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE in turn. */
|
||
static char *
|
||
read_w32_registry_string (const char *root, const char *dir, const char *name)
|
||
{
|
||
HKEY root_key, key_handle;
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||
DWORD n1, nbytes, type;
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||
char *result = NULL;
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||
|
||
if ( !root )
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root_key = HKEY_CURRENT_USER;
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||
else if ( !strcmp( root, "HKEY_CLASSES_ROOT" ) )
|
||
root_key = HKEY_CLASSES_ROOT;
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else if ( !strcmp( root, "HKEY_CURRENT_USER" ) )
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root_key = HKEY_CURRENT_USER;
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else if ( !strcmp( root, "HKEY_LOCAL_MACHINE" ) )
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root_key = HKEY_LOCAL_MACHINE;
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else if ( !strcmp( root, "HKEY_USERS" ) )
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root_key = HKEY_USERS;
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else if ( !strcmp( root, "HKEY_PERFORMANCE_DATA" ) )
|
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root_key = HKEY_PERFORMANCE_DATA;
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else if ( !strcmp( root, "HKEY_CURRENT_CONFIG" ) )
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root_key = HKEY_CURRENT_CONFIG;
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else
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return NULL;
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if ( RegOpenKeyEx ( root_key, dir, 0, KEY_READ, &key_handle ) )
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{
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if (root)
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return NULL; /* no need for a RegClose, so return direct */
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/* It seems to be common practise to fall back to HKLM. */
|
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if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, dir, 0, KEY_READ, &key_handle) )
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return NULL; /* still no need for a RegClose, so return direct */
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}
|
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nbytes = 1;
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if ( RegQueryValueEx( key_handle, name, 0, NULL, NULL, &nbytes ) )
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{
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if (root)
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goto leave;
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/* Try to fallback to HKLM also vor a missing value. */
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RegCloseKey (key_handle);
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if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, dir, 0, KEY_READ, &key_handle) )
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return NULL; /* Nope. */
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if (RegQueryValueEx ( key_handle, name, 0, NULL, NULL, &nbytes))
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goto leave;
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}
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result = malloc ( (n1=nbytes+1) );
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if ( !result )
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goto leave;
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if ( RegQueryValueEx ( key_handle, name, 0, &type, result, &n1 ) )
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{
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free(result); result = NULL;
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goto leave;
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}
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result[nbytes] = 0; /* Make sure it is really a string. */
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if (type == REG_EXPAND_SZ && strchr (result, '%'))
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{
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char *tmp;
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n1 += 1000;
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tmp = malloc (n1+1);
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if (!tmp)
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goto leave;
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nbytes = ExpandEnvironmentStrings (result, tmp, n1);
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if (nbytes && nbytes > n1)
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{
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free (tmp);
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n1 = nbytes;
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tmp = malloc (n1 + 1);
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if (!tmp)
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goto leave;
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nbytes = ExpandEnvironmentStrings (result, tmp, n1);
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if (nbytes && nbytes > n1) {
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free (tmp); /* Oops - truncated, better don't expand at all. */
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goto leave;
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}
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tmp[nbytes] = 0;
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free (result);
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result = tmp;
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}
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else if (nbytes) /* Okay, reduce the length. */
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{
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tmp[nbytes] = 0;
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free (result);
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result = malloc (strlen (tmp)+1);
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if (!result)
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result = tmp;
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else
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{
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strcpy (result, tmp);
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free (tmp);
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}
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}
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else /* Error - don't expand. */
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{
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free (tmp);
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}
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}
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leave:
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RegCloseKey( key_handle );
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return result;
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}
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/* This is a helper function to load and run a Windows function from
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either of one DLLs. */
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static HRESULT
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w32_shgetfolderpath (HWND a, int b, HANDLE c, DWORD d, LPSTR e)
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{
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static int initialized;
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static HRESULT (WINAPI * func)(HWND,int,HANDLE,DWORD,LPSTR);
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if (!initialized)
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{
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static char *dllnames[] = { "shell32.dll", "shfolder.dll", NULL };
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void *handle;
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int i;
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initialized = 1;
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for (i=0, handle = NULL; !handle && dllnames[i]; i++)
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{
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handle = dlopen (dllnames[i], RTLD_LAZY);
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if (handle)
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{
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func = dlsym (handle, "SHGetFolderPathA");
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if (!func)
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{
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dlclose (handle);
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handle = NULL;
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}
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}
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}
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}
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if (func)
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return func (a,b,c,d,e);
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else
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return -1;
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}
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#if 0
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static char *
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find_program_in_inst_dir (const char *name)
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{
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char *result = NULL;
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char *tmp;
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tmp = read_w32_registry_string ("HKEY_LOCAL_MACHINE",
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"Software\\GNU\\GnuPG",
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"Install Directory");
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if (!tmp)
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return NULL;
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result = malloc (strlen (tmp) + 1 + strlen (name) + 1);
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if (!result)
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{
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free (tmp);
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return NULL;
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}
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strcpy (stpcpy (stpcpy (result, tmp), "\\"), name);
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free (tmp);
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if (access (result, F_OK))
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{
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free (result);
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return NULL;
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}
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return result;
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}
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static char *
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find_program_at_standard_place (const char *name)
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{
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char path[MAX_PATH];
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char *result = NULL;
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if (w32_shgetfolderpath (NULL, CSIDL_PROGRAM_FILES, NULL, 0, path) >= 0)
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{
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result = malloc (strlen (path) + 1 + strlen (name) + 1);
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if (result)
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{
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strcpy (stpcpy (stpcpy (result, path), "\\"), name);
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if (access (result, F_OK))
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{
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free (result);
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result = NULL;
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}
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}
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}
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return result;
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}
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#endif
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#endif
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const char *
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get_dirmngr_ldap_path (void)
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{
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static char *pgmname;
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#ifdef HAVE_W32_SYSTEM
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if (! pgmname)
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{
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const char *dir = dirmngr_libexecdir ();
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const char *exe = "\\dirmngr_ldap.exe";
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pgmname = malloc (strlen (dir) + strlen (exe) + 1);
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if (pgmname)
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strcpy (stpcpy (pgmname, dir), exe);
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}
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#endif
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if (!pgmname)
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pgmname = DIRMNGR_LIBEXECDIR "/dirmngr_ldap";
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return pgmname;
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}
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/* Home directory. */
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#ifdef HAVE_W32_SYSTEM
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#ifndef CSIDL_APPDATA
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#define CSIDL_APPDATA 0x001a
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#endif
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#ifndef CSIDL_LOCAL_APPDATA
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#define CSIDL_LOCAL_APPDATA 0x001c
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#endif
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#ifndef CSIDL_COMMON_APPDATA
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#define CSIDL_COMMON_APPDATA 0x0023
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#endif
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#ifndef CSIDL_FLAG_CREATE
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#define CSIDL_FLAG_CREATE 0x8000
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#endif
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#endif /*HAVE_W32_SYSTEM*/
|
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|
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/* Get the standard home directory. In general this function should
|
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not be used as it does not consider a registry value (under W32) or
|
||
the GNUPGHOME environment variable. It is better to use
|
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default_homedir(). */
|
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const char *
|
||
standard_homedir (void)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
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static const char *dir;
|
||
|
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if (!dir)
|
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{
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char path[MAX_PATH];
|
||
|
||
/* It might be better to use LOCAL_APPDATA because this is
|
||
defined as "non roaming" and thus more likely to be kept
|
||
locally. For private keys this is desired. However, given
|
||
that many users copy private keys anyway forth and back,
|
||
using a system roaming services might be better than to let
|
||
them do it manually. A security conscious user will anyway
|
||
use the registry entry to have better control. */
|
||
if (w32_shgetfolderpath (NULL, CSIDL_APPDATA|CSIDL_FLAG_CREATE,
|
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NULL, 0, path) >= 0)
|
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{
|
||
char *tmp = xmalloc (strlen (path) + 6 +1);
|
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strcpy (stpcpy (tmp, path), "\\gnupg");
|
||
dir = tmp;
|
||
|
||
/* Try to create the directory if it does not yet exists. */
|
||
if (access (dir, F_OK))
|
||
CreateDirectory (dir, NULL);
|
||
}
|
||
else
|
||
dir = GNUPG_DEFAULT_HOMEDIR;
|
||
}
|
||
return dir;
|
||
#else/*!HAVE_W32_SYSTEM*/
|
||
return GNUPG_DEFAULT_HOMEDIR;
|
||
#endif /*!HAVE_W32_SYSTEM*/
|
||
}
|
||
|
||
/* Set up the default home directory. The usual --homedir option
|
||
should be parsed later. */
|
||
const char *
|
||
default_homedir (void)
|
||
{
|
||
const char *dir;
|
||
|
||
dir = getenv ("GNUPGHOME");
|
||
#ifdef HAVE_W32_SYSTEM
|
||
if (!dir || !*dir)
|
||
{
|
||
static const char *saved_dir;
|
||
|
||
if (!saved_dir)
|
||
{
|
||
if (!dir || !*dir)
|
||
{
|
||
char *tmp;
|
||
|
||
tmp = read_w32_registry_string (NULL, "Software\\GNU\\GnuPG",
|
||
"HomeDir");
|
||
if (tmp && *tmp)
|
||
{
|
||
xfree (tmp);
|
||
tmp = NULL;
|
||
}
|
||
if (tmp)
|
||
saved_dir = tmp;
|
||
}
|
||
|
||
if (!saved_dir)
|
||
saved_dir = standard_homedir ();
|
||
}
|
||
dir = saved_dir;
|
||
}
|
||
#endif /*HAVE_W32_SYSTEM*/
|
||
if (!dir || !*dir)
|
||
dir = GNUPG_DEFAULT_HOMEDIR;
|
||
|
||
return dir;
|
||
}
|
||
|
||
|
||
#ifdef HAVE_W32_SYSTEM
|
||
static const char *
|
||
w32_rootdir (void)
|
||
{
|
||
static int got_dir;
|
||
static char dir[MAX_PATH+5];
|
||
|
||
if (!got_dir)
|
||
{
|
||
char *p;
|
||
|
||
if ( !GetModuleFileName ( NULL, dir, MAX_PATH) )
|
||
{
|
||
log_debug ("GetModuleFileName failed: %s\n", w32_strerror (0));
|
||
*dir = 0;
|
||
}
|
||
got_dir = 1;
|
||
p = strrchr (dir, DIRSEP_C);
|
||
if (p)
|
||
*p = 0;
|
||
else
|
||
{
|
||
log_debug ("bad filename `%s' returned for this process\n", dir);
|
||
*dir = 0;
|
||
}
|
||
}
|
||
|
||
if (*dir)
|
||
return dir;
|
||
/* Fallback to the hardwired value. */
|
||
return DIRMNGR_LIBEXECDIR;
|
||
}
|
||
|
||
static const char *
|
||
w32_commondir (void)
|
||
{
|
||
static char *dir;
|
||
|
||
if (!dir)
|
||
{
|
||
char path[MAX_PATH];
|
||
|
||
if (w32_shgetfolderpath (NULL, CSIDL_COMMON_APPDATA,
|
||
NULL, 0, path) >= 0)
|
||
{
|
||
char *tmp = xmalloc (strlen (path) + 4 +1);
|
||
strcpy (stpcpy (tmp, path), "\\GNU");
|
||
dir = tmp;
|
||
/* No auto create of the directory. Either the installer or
|
||
the admin has to create these directories. */
|
||
}
|
||
else
|
||
{
|
||
/* Ooops: Not defined - probably an old Windows version.
|
||
Use the installation directory instead. */
|
||
dir = xstrdup (w32_rootdir ());
|
||
}
|
||
}
|
||
|
||
return dir;
|
||
}
|
||
#endif /*HAVE_W32_SYSTEM*/
|
||
|
||
|
||
|
||
|
||
/* Return the name of the sysconfdir. This is a static string. This
|
||
function is required because under Windows we can't simply compile
|
||
it in. */
|
||
const char *
|
||
dirmngr_sysconfdir (void)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
||
static char *name;
|
||
|
||
if (!name)
|
||
{
|
||
const char *s1, *s2;
|
||
s1 = w32_commondir ();
|
||
s2 = DIRSEP_S "etc" DIRSEP_S "dirmngr";
|
||
name = xmalloc (strlen (s1) + strlen (s2) + 1);
|
||
strcpy (stpcpy (name, s1), s2);
|
||
}
|
||
return name;
|
||
#else /*!HAVE_W32_SYSTEM*/
|
||
return DIRMNGR_SYSCONFDIR;
|
||
#endif /*!HAVE_W32_SYSTEM*/
|
||
}
|
||
|
||
|
||
/* Return the name of the libexec directory. The name is allocated in
|
||
a static area on the first use. This function won't fail. */
|
||
const char *
|
||
dirmngr_libexecdir (void)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
||
return w32_rootdir ();
|
||
#else /*!HAVE_W32_SYSTEM*/
|
||
return DIRMNGR_LIBEXECDIR;
|
||
#endif /*!HAVE_W32_SYSTEM*/
|
||
}
|
||
|
||
|
||
const char *
|
||
dirmngr_datadir (void)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
||
static char *name;
|
||
|
||
if (!name)
|
||
{
|
||
const char *s1, *s2;
|
||
s1 = w32_commondir ();
|
||
s2 = DIRSEP_S "lib" DIRSEP_S "dirmngr";
|
||
name = xmalloc (strlen (s1) + strlen (s2) + 1);
|
||
strcpy (stpcpy (name, s1), s2);
|
||
}
|
||
return name;
|
||
#else /*!HAVE_W32_SYSTEM*/
|
||
return DIRMNGR_DATADIR;
|
||
#endif /*!HAVE_W32_SYSTEM*/
|
||
}
|
||
|
||
|
||
const char *
|
||
dirmngr_cachedir (void)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
||
static const char *dir;
|
||
|
||
if (!dir)
|
||
{
|
||
char path[MAX_PATH];
|
||
const char *s1[] = { "GNU", "cache", "dirmngr", NULL };
|
||
int s1_len;
|
||
const char **comp;
|
||
|
||
s1_len = 0;
|
||
for (comp = s1; *comp; comp++)
|
||
{
|
||
/* Take account for the separator. */
|
||
s1_len += 1 + strlen (*comp);
|
||
}
|
||
|
||
if (w32_shgetfolderpath (NULL, CSIDL_LOCAL_APPDATA|CSIDL_FLAG_CREATE,
|
||
NULL, 0, path) >= 0)
|
||
{
|
||
char *tmp = xmalloc (strlen (path) + s1_len + 1);
|
||
char *p;
|
||
|
||
p = stpcpy (tmp, path);
|
||
for (comp = s1; *comp; comp++)
|
||
{
|
||
p = stpcpy (p, "\\");
|
||
p = stpcpy (p, *comp);
|
||
|
||
if (access (tmp, F_OK))
|
||
CreateDirectory (tmp, NULL);
|
||
}
|
||
|
||
dir = tmp;
|
||
}
|
||
else
|
||
dir = "c:\\temp\\cache\\dirmngr";
|
||
}
|
||
return dir;
|
||
#else /*!HAVE_W32_SYSTEM*/
|
||
return DIRMNGR_CACHEDIR;
|
||
#endif /*!HAVE_W32_SYSTEM*/
|
||
}
|
||
|
||
|
||
const char *
|
||
default_socket_name (void)
|
||
{
|
||
#ifdef HAVE_W32_SYSTEM
|
||
static char *name;
|
||
|
||
if (!name)
|
||
{
|
||
char s1[MAX_PATH];
|
||
const char *s2;
|
||
|
||
/* We need something akin CSIDL_COMMON_PROGRAMS, but local
|
||
(non-roaming). This is becuase the file needs to be on the
|
||
local machine and makes only sense on that machine.
|
||
CSIDL_WINDOWS seems to be the only location which guarantees
|
||
that. */
|
||
if (w32_shgetfolderpath (NULL, CSIDL_WINDOWS, NULL, 0, s1) < 0)
|
||
strcpy (s1, "C:\\WINDOWS");
|
||
s2 = DIRSEP_S "S.dirmngr";
|
||
name = xmalloc (strlen (s1) + strlen (s2) + 1);
|
||
strcpy (stpcpy (name, s1), s2);
|
||
}
|
||
return name;
|
||
#else /*!HAVE_W32_SYSTEM*/
|
||
return DIRMNGR_SOCKETDIR "/socket";
|
||
#endif /*!HAVE_W32_SYSTEM*/
|
||
}
|