mirror of
git://git.gnupg.org/gnupg.git
synced 2024-10-31 20:08:43 +01:00
260bbb4ab2
* g10/trustdb.c (how_to_fix_the_trustdb): Use gnupg_homedir. * common/homedir.c (standard_homedir): Annotate leaked memory. (gnupg_daemon_rootdir): Ditto. (gnupg_socketdir): Ditto. (gnupg_sysconfdir): Ditto. (gnupg_bindir): Ditto. (gnupg_libdir): Ditto. (gnupg_datadir): Ditto. (gnupg_localedir): Ditto. (gnupg_cachedir): Ditto. (gpg_agent_socket_name): Ditto. (dirmngr_socket_name): Ditto. (keyboxd_socket_name): Ditto. (get_default_pinentry_name): Ditto. (gnupg_module_name): Ditto. (default_homedir): Ditto. Make static. Signed-off-by: Werner Koch <wk@gnupg.org>
1282 lines
32 KiB
C
1282 lines
32 KiB
C
/* homedir.c - Setup the home directory.
|
|
* Copyright (C) 2004, 2006, 2007, 2010 Free Software Foundation, Inc.
|
|
* Copyright (C) 2013, 2016 Werner Koch
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* This file is free software; you can redistribute it and/or modify
|
|
* it under the terms of either
|
|
*
|
|
* - the GNU Lesser General Public License as published by the Free
|
|
* Software Foundation; either version 3 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* or
|
|
*
|
|
* - 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.
|
|
*
|
|
* or both in parallel, as here.
|
|
*
|
|
* This file 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, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
#include <winsock2.h> /* Due to the stupid mingw64 requirement to
|
|
include this header before windows.h which
|
|
is often implicitly included. */
|
|
#include <shlobj.h>
|
|
#ifndef CSIDL_APPDATA
|
|
#define CSIDL_APPDATA 0x001a
|
|
#endif
|
|
#ifndef CSIDL_LOCAL_APPDATA
|
|
#define CSIDL_LOCAL_APPDATA 0x001c
|
|
#endif
|
|
#ifndef CSIDL_COMMON_APPDATA
|
|
#define CSIDL_COMMON_APPDATA 0x0023
|
|
#endif
|
|
#ifndef CSIDL_FLAG_CREATE
|
|
#define CSIDL_FLAG_CREATE 0x8000
|
|
#endif
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
#ifdef HAVE_STAT
|
|
#include <sys/stat.h> /* for stat() */
|
|
#endif
|
|
|
|
|
|
|
|
#include "util.h"
|
|
#include "sysutils.h"
|
|
#include "i18n.h"
|
|
#include "zb32.h"
|
|
|
|
/* The GnuPG homedir. This is only accessed by the functions
|
|
* gnupg_homedir and gnupg_set_homedir. Malloced. */
|
|
static char *the_gnupg_homedir;
|
|
|
|
/* Flag indicating that home directory is not the default one. */
|
|
static byte non_default_homedir;
|
|
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
/* A flag used to indicate that a control file for gpgconf has been
|
|
detected. Under Windows the presence of this file indicates a
|
|
portable installations and triggers several changes:
|
|
|
|
- The GNUGHOME directory is fixed relative to installation
|
|
directory. All other means to set the home directory are ignore.
|
|
|
|
- All registry variables will be ignored.
|
|
|
|
This flag is not used on Unix systems.
|
|
*/
|
|
static byte w32_portable_app;
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
/* This flag is true if this process's binary has been installed under
|
|
bin and not in the root directory as often used before GnuPG 2.1. */
|
|
static byte w32_bin_is_bin;
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static const char *w32_rootdir (void);
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static void
|
|
w32_try_mkdir (const char *dir)
|
|
{
|
|
#ifdef HAVE_W32CE_SYSTEM
|
|
wchar_t *wdir = utf8_to_wchar (dir);
|
|
if (wdir)
|
|
{
|
|
CreateDirectory (wdir, NULL);
|
|
xfree (wdir);
|
|
}
|
|
#else
|
|
CreateDirectory (dir, NULL);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
|
|
/* This is a helper function to load and call a Windows function from
|
|
* either of one DLLs. On success an UTF-8 file name is returned.
|
|
* ERRNO is _not_ set on error. */
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static char *
|
|
w32_shgetfolderpath (HWND a, int b, HANDLE c, DWORD d)
|
|
{
|
|
static int initialized;
|
|
static HRESULT (WINAPI * func)(HWND,int,HANDLE,DWORD,LPWSTR);
|
|
wchar_t wfname[MAX_PATH];
|
|
|
|
if (!initialized)
|
|
{
|
|
static char *dllnames[] = { "shell32.dll", "shfolder.dll", NULL };
|
|
void *handle;
|
|
int i;
|
|
|
|
initialized = 1;
|
|
|
|
for (i=0, handle = NULL; !handle && dllnames[i]; i++)
|
|
{
|
|
handle = dlopen (dllnames[i], RTLD_LAZY);
|
|
if (handle)
|
|
{
|
|
func = dlsym (handle, "SHGetFolderPathW");
|
|
if (!func)
|
|
{
|
|
dlclose (handle);
|
|
handle = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (func && func (a,b,c,d,wfname) >= 0)
|
|
return wchar_to_utf8 (wfname);
|
|
else
|
|
return NULL;
|
|
}
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
|
|
/* Check whether DIR is the default homedir. */
|
|
static int
|
|
is_gnupg_default_homedir (const char *dir)
|
|
{
|
|
int result;
|
|
char *a = make_absfilename (dir, NULL);
|
|
char *b = make_absfilename (GNUPG_DEFAULT_HOMEDIR, NULL);
|
|
result = !compare_filenames (a, b);
|
|
xfree (b);
|
|
xfree (a);
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Helper to remove trailing slashes from NEWDIR. Return a new
|
|
* allocated string if that has been done or NULL if there are no
|
|
* slashes to remove. Also inserts a missing slash after a Windows
|
|
* drive letter. */
|
|
static char *
|
|
copy_dir_with_fixup (const char *newdir)
|
|
{
|
|
char *result = NULL;
|
|
char *p;
|
|
|
|
if (!*newdir)
|
|
return NULL;
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
if (newdir[0] && newdir[1] == ':'
|
|
&& !(newdir[2] == '/' || newdir[2] == '\\'))
|
|
{
|
|
/* Drive letter with missing leading slash. */
|
|
p = result = xmalloc (strlen (newdir) + 1 + 1);
|
|
*p++ = newdir[0];
|
|
*p++ = newdir[1];
|
|
*p++ = '\\';
|
|
strcpy (p, newdir+2);
|
|
|
|
/* Remove trailing slashes. */
|
|
p = result + strlen (result) - 1;
|
|
while (p > result+2 && (*p == '/' || *p == '\\'))
|
|
*p-- = 0;
|
|
}
|
|
else if (newdir[strlen (newdir)-1] == '/'
|
|
|| newdir[strlen (newdir)-1] == '\\' )
|
|
{
|
|
result = xstrdup (newdir);
|
|
p = result + strlen (result) - 1;
|
|
while (p > result
|
|
&& (*p == '/' || *p == '\\')
|
|
&& (p-1 > result && p[-1] != ':')) /* We keep "c:/". */
|
|
*p-- = 0;
|
|
}
|
|
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
|
|
if (newdir[strlen (newdir)-1] == '/')
|
|
{
|
|
result = xstrdup (newdir);
|
|
p = result + strlen (result) - 1;
|
|
while (p > result && *p == '/')
|
|
*p-- = 0;
|
|
}
|
|
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Get the standard home directory. In general this function should
|
|
not be used as it does not consider a registry value (under W32) or
|
|
the GNUPGHOME environment variable. It is better to use
|
|
gnupg_homedir(). */
|
|
const char *
|
|
standard_homedir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static const char *dir;
|
|
|
|
if (!dir)
|
|
{
|
|
const char *rdir;
|
|
|
|
rdir = w32_rootdir ();
|
|
if (w32_portable_app)
|
|
{
|
|
dir = xstrconcat (rdir, DIRSEP_S "home", NULL);
|
|
gpgrt_annotate_leaked_object (dir);
|
|
}
|
|
else
|
|
{
|
|
char *path;
|
|
|
|
path = w32_shgetfolderpath (NULL, CSIDL_APPDATA|CSIDL_FLAG_CREATE,
|
|
NULL, 0);
|
|
if (path)
|
|
{
|
|
dir = xstrconcat (path, "\\gnupg", NULL);
|
|
xfree (path);
|
|
gpgrt_annotate_leaked_object (dir);
|
|
|
|
/* Try to create the directory if it does not yet exists. */
|
|
if (gnupg_access (dir, F_OK))
|
|
w32_try_mkdir (dir);
|
|
}
|
|
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. */
|
|
static const char *
|
|
default_homedir (void)
|
|
{
|
|
const char *dir;
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
/* For a portable application we only use the standard homedir. */
|
|
w32_rootdir ();
|
|
if (w32_portable_app)
|
|
return standard_homedir ();
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
dir = getenv ("GNUPGHOME");
|
|
#ifdef HAVE_W32_SYSTEM
|
|
if (!dir || !*dir)
|
|
{
|
|
static const char *saved_dir;
|
|
|
|
if (!saved_dir)
|
|
{
|
|
if (!dir || !*dir)
|
|
{
|
|
char *tmp, *p;
|
|
|
|
/* This is deprecated; gpgconf --list-dirs prints a
|
|
* warning if the homedir has been taken from the
|
|
* registry. */
|
|
tmp = read_w32_registry_string (NULL,
|
|
GNUPG_REGISTRY_DIR,
|
|
"HomeDir");
|
|
if (tmp && !*tmp)
|
|
{
|
|
xfree (tmp);
|
|
tmp = NULL;
|
|
}
|
|
if (tmp)
|
|
{
|
|
/* Strip trailing backslashes. */
|
|
p = tmp + strlen (tmp) - 1;
|
|
while (p > tmp && *p == '\\')
|
|
*p-- = 0;
|
|
saved_dir = tmp;
|
|
}
|
|
}
|
|
|
|
if (!saved_dir)
|
|
saved_dir = standard_homedir ();
|
|
}
|
|
dir = saved_dir;
|
|
}
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
if (!dir || !*dir)
|
|
dir = GNUPG_DEFAULT_HOMEDIR;
|
|
else
|
|
{
|
|
char *p;
|
|
|
|
p = copy_dir_with_fixup (dir);
|
|
if (p)
|
|
{
|
|
/* A new buffer has been allocated with proper semantics.
|
|
* Assign this to DIR. If DIR is passed again to
|
|
* copy_dir_with_fixup there will be no need for a fix up
|
|
* and the function returns NULL. Thus we leak only once.
|
|
* Setting the homedir is usually a one-off task but might
|
|
* be called a second time. We also ignore such extra leaks
|
|
* because we don't know who still references the former
|
|
* string. */
|
|
gpgrt_annotate_leaked_object (p);
|
|
dir = p;
|
|
}
|
|
|
|
if (!is_gnupg_default_homedir (dir))
|
|
non_default_homedir = 1;
|
|
}
|
|
|
|
return dir;
|
|
}
|
|
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
/* Check whether gpgconf is installed and if so read the gpgconf.ctl
|
|
file. */
|
|
static void
|
|
check_portable_app (const char *dir)
|
|
{
|
|
char *fname;
|
|
|
|
fname = xstrconcat (dir, DIRSEP_S "gpgconf.exe", NULL);
|
|
if (!gnupg_access (fname, F_OK))
|
|
{
|
|
strcpy (fname + strlen (fname) - 3, "ctl");
|
|
if (!gnupg_access (fname, F_OK))
|
|
{
|
|
/* gpgconf.ctl file found. Record this fact. */
|
|
w32_portable_app = 1;
|
|
{
|
|
unsigned int flags;
|
|
log_get_prefix (&flags);
|
|
log_set_prefix (NULL, (flags | GPGRT_LOG_NO_REGISTRY));
|
|
}
|
|
/* FIXME: We should read the file to detect special flags
|
|
and print a warning if we don't understand them */
|
|
}
|
|
}
|
|
xfree (fname);
|
|
}
|
|
|
|
|
|
/* Determine the root directory of the gnupg installation on Windows. */
|
|
static const char *
|
|
w32_rootdir (void)
|
|
{
|
|
static int got_dir;
|
|
static char dir[MAX_PATH+5];
|
|
|
|
if (!got_dir)
|
|
{
|
|
char *p;
|
|
int rc;
|
|
wchar_t wdir [MAX_PATH+5];
|
|
|
|
rc = GetModuleFileNameW (NULL, wdir, MAX_PATH);
|
|
if (rc && WideCharToMultiByte (CP_UTF8, 0, wdir, -1, dir, MAX_PATH-4,
|
|
NULL, NULL) < 0)
|
|
rc = 0;
|
|
if (!rc)
|
|
{
|
|
log_debug ("GetModuleFileName failed: %s\n", w32_strerror (-1));
|
|
*dir = 0;
|
|
}
|
|
got_dir = 1;
|
|
p = strrchr (dir, DIRSEP_C);
|
|
if (p)
|
|
{
|
|
*p = 0;
|
|
|
|
check_portable_app (dir);
|
|
|
|
/* If we are installed below "bin" we strip that and use
|
|
the top directory instead. */
|
|
p = strrchr (dir, DIRSEP_C);
|
|
if (p && !strcmp (p+1, "bin"))
|
|
{
|
|
*p = 0;
|
|
w32_bin_is_bin = 1;
|
|
}
|
|
}
|
|
if (!p)
|
|
{
|
|
log_debug ("bad filename '%s' returned for this process\n", dir);
|
|
*dir = 0;
|
|
}
|
|
}
|
|
|
|
if (*dir)
|
|
return dir;
|
|
/* Fallback to the hardwired value. */
|
|
return GNUPG_LIBEXECDIR;
|
|
}
|
|
|
|
static const char *
|
|
w32_commondir (void)
|
|
{
|
|
static char *dir;
|
|
|
|
if (!dir)
|
|
{
|
|
const char *rdir;
|
|
char *path;
|
|
|
|
/* Make sure that w32_rootdir has been called so that we are
|
|
able to check the portable application flag. The common dir
|
|
is the identical to the rootdir. In that case there is also
|
|
no need to strdup its value. */
|
|
rdir = w32_rootdir ();
|
|
if (w32_portable_app)
|
|
return rdir;
|
|
|
|
path = w32_shgetfolderpath (NULL, CSIDL_COMMON_APPDATA, NULL, 0);
|
|
if (path)
|
|
{
|
|
dir = xstrconcat (path, "\\GNU", NULL);
|
|
/* No auto create of the directory. Either the installer or
|
|
* the admin has to create these directories. */
|
|
}
|
|
else
|
|
{
|
|
/* Folder not found or defined - probably an old Windows
|
|
* version. Use the installation directory instead. */
|
|
dir = xstrdup (rdir);
|
|
}
|
|
gpgrt_annotate_leaked_object (dir);
|
|
}
|
|
|
|
return dir;
|
|
}
|
|
#endif /*HAVE_W32_SYSTEM*/
|
|
|
|
|
|
/* Change the homedir. Some care must be taken to set this early
|
|
* enough because previous calls to gnupg_homedir may else return a
|
|
* different string. */
|
|
void
|
|
gnupg_set_homedir (const char *newdir)
|
|
{
|
|
char *tmp = NULL;
|
|
|
|
if (!newdir || !*newdir)
|
|
newdir = default_homedir ();
|
|
else
|
|
{
|
|
tmp = copy_dir_with_fixup (newdir);
|
|
if (tmp)
|
|
newdir = tmp;
|
|
|
|
if (!is_gnupg_default_homedir (newdir))
|
|
non_default_homedir = 1;
|
|
}
|
|
xfree (the_gnupg_homedir);
|
|
the_gnupg_homedir = make_absfilename (newdir, NULL);;
|
|
xfree (tmp);
|
|
/* Fixme: Should we use
|
|
* gpgrt_annotate_leaked_object(the_gnupg_homedir)
|
|
* despite that we may free and allocate a new one in some
|
|
* cases? */
|
|
}
|
|
|
|
|
|
/* Create the homedir directory only if the supplied directory name is
|
|
* the same as the default one. This way we avoid to create arbitrary
|
|
* directories when a non-default home directory is used. To cope
|
|
* with HOME, we do compare only the suffix if we see that the default
|
|
* homedir does start with a tilde. If the mkdir fails the function
|
|
* terminates the process. If QUIET is set not diagnostic is printed
|
|
* on homedir creation. */
|
|
void
|
|
gnupg_maybe_make_homedir (const char *fname, int quiet)
|
|
{
|
|
const char *defhome = standard_homedir ();
|
|
|
|
if (
|
|
#ifdef HAVE_W32_SYSTEM
|
|
( !compare_filenames (fname, defhome) )
|
|
#else
|
|
( *defhome == '~'
|
|
&& (strlen(fname) >= strlen (defhome+1)
|
|
&& !strcmp(fname+strlen(fname)-strlen(defhome+1), defhome+1 ) ))
|
|
|| (*defhome != '~' && !compare_filenames( fname, defhome ) )
|
|
#endif
|
|
)
|
|
{
|
|
if (gnupg_mkdir (fname, "-rwx"))
|
|
log_fatal ( _("can't create directory '%s': %s\n"),
|
|
fname, strerror(errno) );
|
|
else if (!quiet )
|
|
log_info ( _("directory '%s' created\n"), fname );
|
|
}
|
|
}
|
|
|
|
|
|
/* Return the homedir. The returned string is valid until another
|
|
* gnupg-set-homedir call. This is always an absolute directory name.
|
|
* The function replaces the former global var opt.homedir. */
|
|
const char *
|
|
gnupg_homedir (void)
|
|
{
|
|
/* If a homedir has not been set, set it to the default. */
|
|
if (!the_gnupg_homedir)
|
|
the_gnupg_homedir = make_absfilename (default_homedir (), NULL);
|
|
return the_gnupg_homedir;
|
|
}
|
|
|
|
|
|
/* Return whether the home dir is the default one. */
|
|
int
|
|
gnupg_default_homedir_p (void)
|
|
{
|
|
return !non_default_homedir;
|
|
}
|
|
|
|
|
|
/* Return the directory name used by daemons for their current working
|
|
* directory. */
|
|
const char *
|
|
gnupg_daemon_rootdir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
char path[MAX_PATH];
|
|
size_t n;
|
|
|
|
n = GetSystemDirectoryA (path, sizeof path);
|
|
if (!n || n >= sizeof path)
|
|
name = xstrdup ("/"); /* Error - use the curret top dir instead. */
|
|
else
|
|
name = xstrdup (path);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
|
|
return name;
|
|
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return "/";
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
|
|
/* Helper for gnupg-socketdir. This is a global function, so that
|
|
* gpgconf can use it for its --create-socketdir command. If
|
|
* SKIP_CHECKS is set permission checks etc. are not done. The
|
|
* function always returns a malloced directory name and stores these
|
|
* bit flags at R_INFO:
|
|
*
|
|
* 1 := Internal error, stat failed, out of core, etc.
|
|
* 2 := No /run/user directory.
|
|
* 4 := Directory not owned by the user, not a directory
|
|
* or wrong permissions.
|
|
* 8 := Same as 4 but for the subdir.
|
|
* 16 := mkdir failed
|
|
* 32 := Non default homedir; checking subdir.
|
|
* 64 := Subdir does not exist.
|
|
* 128 := Using homedir as fallback.
|
|
*/
|
|
char *
|
|
_gnupg_socketdir_internal (int skip_checks, unsigned *r_info)
|
|
{
|
|
#if defined(HAVE_W32_SYSTEM) || !defined(HAVE_STAT)
|
|
|
|
char *name;
|
|
|
|
(void)skip_checks;
|
|
*r_info = 0;
|
|
name = xstrdup (gnupg_homedir ());
|
|
|
|
#else /* Unix and stat(2) available. */
|
|
|
|
static const char * const bases[] = {
|
|
#ifdef USE_RUN_GNUPG_USER_SOCKET
|
|
"/run/gnupg",
|
|
#endif
|
|
"/run",
|
|
#ifdef USE_RUN_GNUPG_USER_SOCKET
|
|
"/var/run/gnupg",
|
|
#endif
|
|
"/var/run",
|
|
NULL
|
|
};
|
|
int i;
|
|
struct stat sb;
|
|
char prefix[19 + 1 + 20 + 6 + 1];
|
|
const char *s;
|
|
char *name = NULL;
|
|
|
|
*r_info = 0;
|
|
|
|
/* First make sure that non_default_homedir can be set. */
|
|
gnupg_homedir ();
|
|
|
|
/* It has been suggested to first check XDG_RUNTIME_DIR envvar.
|
|
* However, the specs state that the lifetime of the directory MUST
|
|
* be bound to the user being logged in. Now GnuPG may also be run
|
|
* as a background process with no (desktop) user logged in. Thus
|
|
* we better don't do that. */
|
|
|
|
/* Check whether we have a /run/[gnupg/]user dir. */
|
|
for (i=0; bases[i]; i++)
|
|
{
|
|
snprintf (prefix, sizeof prefix, "%s/user/%u",
|
|
bases[i], (unsigned int)getuid ());
|
|
if (!stat (prefix, &sb) && S_ISDIR(sb.st_mode))
|
|
break;
|
|
}
|
|
if (!bases[i])
|
|
{
|
|
*r_info |= 2; /* No /run/user directory. */
|
|
goto leave;
|
|
}
|
|
|
|
if (sb.st_uid != getuid ())
|
|
{
|
|
*r_info |= 4; /* Not owned by the user. */
|
|
if (!skip_checks)
|
|
goto leave;
|
|
}
|
|
|
|
if (strlen (prefix) + 7 >= sizeof prefix)
|
|
{
|
|
*r_info |= 1; /* Ooops: Buffer too short to append "/gnupg". */
|
|
goto leave;
|
|
}
|
|
strcat (prefix, "/gnupg");
|
|
|
|
/* Check whether the gnupg sub directory has proper permissions. */
|
|
if (stat (prefix, &sb))
|
|
{
|
|
if (errno != ENOENT)
|
|
{
|
|
*r_info |= 1; /* stat failed. */
|
|
goto leave;
|
|
}
|
|
|
|
/* Try to create the directory and check again. */
|
|
if (gnupg_mkdir (prefix, "-rwx"))
|
|
{
|
|
*r_info |= 16; /* mkdir failed. */
|
|
goto leave;
|
|
}
|
|
if (stat (prefix, &sb))
|
|
{
|
|
*r_info |= 1; /* stat failed. */
|
|
goto leave;
|
|
}
|
|
}
|
|
/* Check that it is a directory, owned by the user, and only the
|
|
* user has permissions to use it. */
|
|
if (!S_ISDIR(sb.st_mode)
|
|
|| sb.st_uid != getuid ()
|
|
|| (sb.st_mode & (S_IRWXG|S_IRWXO)))
|
|
{
|
|
*r_info |= 4; /* Bad permissions or not a directory. */
|
|
if (!skip_checks)
|
|
goto leave;
|
|
}
|
|
|
|
/* If a non default homedir is used, we check whether an
|
|
* corresponding sub directory below the socket dir is available
|
|
* and use that. We hash the non default homedir to keep the new
|
|
* subdir short enough. */
|
|
if (non_default_homedir)
|
|
{
|
|
char sha1buf[20];
|
|
char *suffix;
|
|
|
|
*r_info |= 32; /* Testing subdir. */
|
|
s = gnupg_homedir ();
|
|
gcry_md_hash_buffer (GCRY_MD_SHA1, sha1buf, s, strlen (s));
|
|
suffix = zb32_encode (sha1buf, 8*15);
|
|
if (!suffix)
|
|
{
|
|
*r_info |= 1; /* Out of core etc. */
|
|
goto leave;
|
|
}
|
|
name = strconcat (prefix, "/d.", suffix, NULL);
|
|
xfree (suffix);
|
|
if (!name)
|
|
{
|
|
*r_info |= 1; /* Out of core etc. */
|
|
goto leave;
|
|
}
|
|
|
|
/* Stat that directory and check constraints.
|
|
* The command
|
|
* gpgconf --remove-socketdir
|
|
* can be used to remove that directory. */
|
|
if (stat (name, &sb))
|
|
{
|
|
if (errno != ENOENT)
|
|
*r_info |= 1; /* stat failed. */
|
|
else if (!skip_checks)
|
|
{
|
|
/* Try to create the directory and check again. */
|
|
if (gnupg_mkdir (name, "-rwx"))
|
|
*r_info |= 16; /* mkdir failed. */
|
|
else if (stat (prefix, &sb))
|
|
{
|
|
if (errno != ENOENT)
|
|
*r_info |= 1; /* stat failed. */
|
|
else
|
|
*r_info |= 64; /* Subdir does not exist. */
|
|
}
|
|
else
|
|
goto leave; /* Success! */
|
|
}
|
|
else
|
|
*r_info |= 64; /* Subdir does not exist. */
|
|
if (!skip_checks)
|
|
{
|
|
xfree (name);
|
|
name = NULL;
|
|
goto leave;
|
|
}
|
|
}
|
|
else if (!S_ISDIR(sb.st_mode)
|
|
|| sb.st_uid != getuid ()
|
|
|| (sb.st_mode & (S_IRWXG|S_IRWXO)))
|
|
{
|
|
*r_info |= 8; /* Bad permissions or subdir is not a directory. */
|
|
if (!skip_checks)
|
|
{
|
|
xfree (name);
|
|
name = NULL;
|
|
goto leave;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
name = xstrdup (prefix);
|
|
|
|
leave:
|
|
/* If nothing works fall back to the homedir. */
|
|
if (!name)
|
|
{
|
|
*r_info |= 128; /* Fallback. */
|
|
name = xstrdup (gnupg_homedir ());
|
|
}
|
|
|
|
#endif /* Unix */
|
|
|
|
return name;
|
|
}
|
|
|
|
|
|
/*
|
|
* Return the name of the socket dir. That is the directory used for
|
|
* the IPC local sockets. This is an absolute directory name.
|
|
*/
|
|
const char *
|
|
gnupg_socketdir (void)
|
|
{
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
unsigned int dummy;
|
|
name = _gnupg_socketdir_internal (0, &dummy);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
|
|
/* 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 *
|
|
gnupg_sysconfdir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
const char *s1, *s2;
|
|
s1 = w32_commondir ();
|
|
s2 = DIRSEP_S "etc" DIRSEP_S "gnupg";
|
|
name = xmalloc (strlen (s1) + strlen (s2) + 1);
|
|
strcpy (stpcpy (name, s1), s2);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return GNUPG_SYSCONFDIR;
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
|
|
const char *
|
|
gnupg_bindir (void)
|
|
{
|
|
#if defined (HAVE_W32CE_SYSTEM)
|
|
static char *name;
|
|
|
|
if (!name)
|
|
name = xstrconcat (w32_rootdir (), DIRSEP_S "bin", NULL);
|
|
return name;
|
|
#elif defined(HAVE_W32_SYSTEM)
|
|
const char *rdir;
|
|
|
|
rdir = w32_rootdir ();
|
|
if (w32_bin_is_bin)
|
|
{
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = xstrconcat (rdir, DIRSEP_S "bin", NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
}
|
|
else
|
|
return rdir;
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return GNUPG_BINDIR;
|
|
#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 *
|
|
gnupg_libexecdir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
return gnupg_bindir ();
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return GNUPG_LIBEXECDIR;
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
const char *
|
|
gnupg_libdir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = xstrconcat (w32_rootdir (), DIRSEP_S "lib" DIRSEP_S "gnupg", NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return GNUPG_LIBDIR;
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
const char *
|
|
gnupg_datadir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = xstrconcat (w32_rootdir (), DIRSEP_S "share" DIRSEP_S "gnupg",
|
|
NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return GNUPG_DATADIR;
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
|
|
const char *
|
|
gnupg_localedir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = xstrconcat (w32_rootdir (), DIRSEP_S "share" DIRSEP_S "locale",
|
|
NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return LOCALEDIR;
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
|
|
/* Return the name of the cache directory. The name is allocated in a
|
|
static area on the first use. Windows only: If the directory does
|
|
not exist it is created. */
|
|
const char *
|
|
gnupg_cachedir (void)
|
|
{
|
|
#ifdef HAVE_W32_SYSTEM
|
|
static const char *dir;
|
|
|
|
if (!dir)
|
|
{
|
|
const char *rdir;
|
|
|
|
rdir = w32_rootdir ();
|
|
if (w32_portable_app)
|
|
{
|
|
dir = xstrconcat (rdir,
|
|
DIRSEP_S, "var",
|
|
DIRSEP_S, "cache",
|
|
DIRSEP_S, "gnupg", NULL);
|
|
gpgrt_annotate_leaked_object (dir);
|
|
}
|
|
else
|
|
{
|
|
char *path;
|
|
const char *s1[] = { "GNU", "cache", "gnupg", NULL };
|
|
int s1_len;
|
|
const char **comp;
|
|
|
|
s1_len = 0;
|
|
for (comp = s1; *comp; comp++)
|
|
s1_len += 1 + strlen (*comp);
|
|
|
|
path = w32_shgetfolderpath (NULL,
|
|
CSIDL_LOCAL_APPDATA|CSIDL_FLAG_CREATE,
|
|
NULL, 0);
|
|
if (path)
|
|
{
|
|
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 (gnupg_access (tmp, F_OK))
|
|
w32_try_mkdir (tmp);
|
|
}
|
|
|
|
dir = tmp;
|
|
xfree (path);
|
|
gpgrt_annotate_leaked_object (dir);
|
|
}
|
|
else
|
|
{
|
|
dir = "c:\\temp\\cache\\gnupg";
|
|
#ifdef HAVE_W32CE_SYSTEM
|
|
dir += 2;
|
|
w32_try_mkdir ("\\temp\\cache");
|
|
w32_try_mkdir ("\\temp\\cache\\gnupg");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
return dir;
|
|
#else /*!HAVE_W32_SYSTEM*/
|
|
return GNUPG_LOCALSTATEDIR "/cache/" PACKAGE_NAME;
|
|
#endif /*!HAVE_W32_SYSTEM*/
|
|
}
|
|
|
|
|
|
/* Return the standard socket name used by gpg-agent. */
|
|
const char *
|
|
gpg_agent_socket_name (void)
|
|
{
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = make_filename (gnupg_socketdir (), GPG_AGENT_SOCK_NAME, NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
/* Return the user socket name used by DirMngr. */
|
|
const char *
|
|
dirmngr_socket_name (void)
|
|
{
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = make_filename (gnupg_socketdir (), DIRMNGR_SOCK_NAME, NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
|
|
/* Return the user socket name used by Keyboxd. */
|
|
const char *
|
|
keyboxd_socket_name (void)
|
|
{
|
|
static char *name;
|
|
|
|
if (!name)
|
|
{
|
|
name = make_filename (gnupg_socketdir (), KEYBOXD_SOCK_NAME, NULL);
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
|
|
/* Return the default pinentry name. If RESET is true the internal
|
|
cache is first flushed. */
|
|
static const char *
|
|
get_default_pinentry_name (int reset)
|
|
{
|
|
static struct {
|
|
const char *(*rfnc)(void);
|
|
const char *name;
|
|
} names[] = {
|
|
/* The first entry is what we return in case we found no
|
|
other pinentry. */
|
|
{ gnupg_bindir, DIRSEP_S "pinentry" EXEEXT_S },
|
|
#ifdef HAVE_W32_SYSTEM
|
|
/* Try Gpg4win directory (with bin and without.) */
|
|
{ w32_rootdir, "\\..\\Gpg4win\\bin\\pinentry.exe" },
|
|
{ w32_rootdir, "\\..\\Gpg4win\\pinentry.exe" },
|
|
/* Try a pinentry in a dir above us */
|
|
{ w32_rootdir, "\\..\\bin\\pinentry.exe" },
|
|
/* Try old Gpgwin directory. */
|
|
{ w32_rootdir, "\\..\\GNU\\GnuPG\\pinentry.exe" },
|
|
/* Try a Pinentry from the common GNU dir. */
|
|
{ w32_rootdir, "\\..\\GNU\\bin\\pinentry.exe" },
|
|
#endif
|
|
/* Last chance is a pinentry-basic (which comes with the
|
|
GnuPG 2.1 Windows installer). */
|
|
{ gnupg_bindir, DIRSEP_S "pinentry-basic" EXEEXT_S }
|
|
};
|
|
static char *name;
|
|
|
|
if (reset)
|
|
{
|
|
xfree (name);
|
|
name = NULL;
|
|
}
|
|
|
|
if (!name)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i < DIM(names); i++)
|
|
{
|
|
char *name2;
|
|
|
|
name2 = xstrconcat (names[i].rfnc (), names[i].name, NULL);
|
|
if (!gnupg_access (name2, F_OK))
|
|
{
|
|
/* Use that pinentry. */
|
|
xfree (name);
|
|
name = name2;
|
|
break;
|
|
}
|
|
if (!i) /* Store the first as fallback return. */
|
|
name = name2;
|
|
else
|
|
xfree (name2);
|
|
}
|
|
if (name)
|
|
gpgrt_annotate_leaked_object (name);
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
|
|
/* If set, 'gnupg_module_name' returns modules from that build
|
|
* directory. */
|
|
static char *gnupg_build_directory;
|
|
|
|
/* For sanity checks. */
|
|
static int gnupg_module_name_called;
|
|
|
|
|
|
/* Set NEWDIR as the new build directory. This will make
|
|
* 'gnupg_module_name' return modules from that build directory. Must
|
|
* be called before any invocation of 'gnupg_module_name', and must
|
|
* not be called twice. It can be used by test suites to make sure
|
|
* the components from the build directory are used instead of
|
|
* potentially outdated installed ones. */
|
|
void
|
|
gnupg_set_builddir (const char *newdir)
|
|
{
|
|
log_assert (! gnupg_module_name_called);
|
|
log_assert (! gnupg_build_directory);
|
|
gnupg_build_directory = xtrystrdup (newdir);
|
|
}
|
|
|
|
|
|
/* If no build directory has been configured, try to set it from the
|
|
* environment. We only do this in development builds to avoid
|
|
* increasing the set of influential environment variables and hence
|
|
* the attack surface of production builds. */
|
|
static void
|
|
gnupg_set_builddir_from_env (void)
|
|
{
|
|
#if defined(IS_DEVELOPMENT_VERSION) || defined(ENABLE_GNUPG_BUILDDIR_ENVVAR)
|
|
if (gnupg_build_directory)
|
|
return;
|
|
|
|
gnupg_build_directory = getenv ("GNUPG_BUILDDIR");
|
|
#endif
|
|
}
|
|
|
|
|
|
/* Return the file name of a helper tool. WHICH is one of the
|
|
GNUPG_MODULE_NAME_foo constants. */
|
|
const char *
|
|
gnupg_module_name (int which)
|
|
{
|
|
gnupg_set_builddir_from_env ();
|
|
gnupg_module_name_called = 1;
|
|
|
|
#define X(a,b,c) do { \
|
|
static char *name; \
|
|
if (!name) { \
|
|
name = gnupg_build_directory \
|
|
? xstrconcat (gnupg_build_directory, \
|
|
DIRSEP_S b DIRSEP_S c EXEEXT_S, NULL) \
|
|
: xstrconcat (gnupg_ ## a (), DIRSEP_S c EXEEXT_S, NULL); \
|
|
gpgrt_annotate_leaked_object (name); \
|
|
} \
|
|
return name; \
|
|
} while (0)
|
|
|
|
switch (which)
|
|
{
|
|
case GNUPG_MODULE_NAME_AGENT:
|
|
#ifdef GNUPG_DEFAULT_AGENT
|
|
return GNUPG_DEFAULT_AGENT;
|
|
#else
|
|
X(bindir, "agent", "gpg-agent");
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_PINENTRY:
|
|
#ifdef GNUPG_DEFAULT_PINENTRY
|
|
return GNUPG_DEFAULT_PINENTRY; /* (Set by a configure option) */
|
|
#else
|
|
return get_default_pinentry_name (0);
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_SCDAEMON:
|
|
#ifdef GNUPG_DEFAULT_SCDAEMON
|
|
return GNUPG_DEFAULT_SCDAEMON;
|
|
#else
|
|
X(libexecdir, "scd", "scdaemon");
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_TPM2DAEMON:
|
|
#ifdef GNUPG_DEFAULT_TPM2DAEMON
|
|
return GNUPG_DEFAULT_TPM2DAEMON;
|
|
#else
|
|
X(libexecdir, "tpm2d", TPM2DAEMON_NAME);
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_DIRMNGR:
|
|
#ifdef GNUPG_DEFAULT_DIRMNGR
|
|
return GNUPG_DEFAULT_DIRMNGR;
|
|
#else
|
|
X(bindir, "dirmngr", DIRMNGR_NAME);
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_KEYBOXD:
|
|
#ifdef GNUPG_DEFAULT_KEYBOXD
|
|
return GNUPG_DEFAULT_KEYBOXD;
|
|
#else
|
|
X(libexecdir, "kbx", KEYBOXD_NAME);
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_PROTECT_TOOL:
|
|
#ifdef GNUPG_DEFAULT_PROTECT_TOOL
|
|
return GNUPG_DEFAULT_PROTECT_TOOL;
|
|
#else
|
|
X(libexecdir, "agent", "gpg-protect-tool");
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_DIRMNGR_LDAP:
|
|
#ifdef GNUPG_DEFAULT_DIRMNGR_LDAP
|
|
return GNUPG_DEFAULT_DIRMNGR_LDAP;
|
|
#else
|
|
X(libexecdir, "dirmngr", "dirmngr_ldap");
|
|
#endif
|
|
|
|
case GNUPG_MODULE_NAME_CHECK_PATTERN:
|
|
X(libexecdir, "tools", "gpg-check-pattern");
|
|
|
|
case GNUPG_MODULE_NAME_GPGSM:
|
|
X(bindir, "sm", "gpgsm");
|
|
|
|
case GNUPG_MODULE_NAME_GPG:
|
|
#if USE_GPG2_HACK
|
|
if (! gnupg_build_directory)
|
|
X(bindir, "g10", GPG_NAME "2");
|
|
else
|
|
#endif
|
|
X(bindir, "g10", GPG_NAME);
|
|
|
|
case GNUPG_MODULE_NAME_GPGV:
|
|
#if USE_GPG2_HACK
|
|
if (! gnupg_build_directory)
|
|
X(bindir, "g10", GPG_NAME "v2");
|
|
else
|
|
#endif
|
|
X(bindir, "g10", GPG_NAME "v");
|
|
|
|
case GNUPG_MODULE_NAME_CONNECT_AGENT:
|
|
X(bindir, "tools", "gpg-connect-agent");
|
|
|
|
case GNUPG_MODULE_NAME_GPGCONF:
|
|
X(bindir, "tools", "gpgconf");
|
|
|
|
default:
|
|
BUG ();
|
|
}
|
|
#undef X
|
|
}
|
|
|
|
|
|
/* Flush some of the cached module names. This is for example used by
|
|
gpg-agent to allow configuring a different pinentry. */
|
|
void
|
|
gnupg_module_name_flush_some (void)
|
|
{
|
|
(void)get_default_pinentry_name (1);
|
|
}
|