mirror of
git://git.gnupg.org/gnupg.git
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935edf88ab
* kbx/keybox.h (keybox_blobtype_t): New. * kbx/keybox-defs.h (BLOBTYPE_*): Replace by KEYBOX_BLOBTYPE_*. * kbx/keybox-search.c (keybox_search): Add arg want_blobtype and skip non-matching blobs. * sm/keydb.c (keydb_search): Pass KEYBOX_BLOBTYPE_X509 to keybox_search. * g10/keydb.c (keydb_search): Pass KEYBOX_BLOBTYPE_PGP to keybox_search. -- Without this fix a listing of all keys would fail because the wrong blob type would be returned for the gpg or gpgsm. Signed-off-by: Werner Koch <wk@gnupg.org>
1324 lines
31 KiB
C
1324 lines
31 KiB
C
/* keydb.c - key database dispatcher
|
||
* Copyright (C) 2001, 2003, 2004 Free Software Foundation, Inc.
|
||
* Copyright (C) 2014 g10 Code GmbH
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||
*
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||
* This file is part of GnuPG.
|
||
*
|
||
* GnuPG 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 3 of the License, or
|
||
* (at your option) any later version.
|
||
*
|
||
* GnuPG 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.
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||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
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||
#include <config.h>
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||
#include <stdio.h>
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||
#include <stdlib.h>
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||
#include <string.h>
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||
#include <errno.h>
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||
#include <assert.h>
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||
#include <sys/types.h>
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||
#include <sys/stat.h>
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||
#include <unistd.h>
|
||
|
||
#include "gpgsm.h"
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||
#include "../kbx/keybox.h"
|
||
#include "keydb.h"
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||
#include "i18n.h"
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||
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||
static int active_handles;
|
||
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||
typedef enum {
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||
KEYDB_RESOURCE_TYPE_NONE = 0,
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KEYDB_RESOURCE_TYPE_KEYBOX
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} KeydbResourceType;
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#define MAX_KEYDB_RESOURCES 20
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struct resource_item {
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KeydbResourceType type;
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union {
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||
KEYBOX_HANDLE kr;
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||
} u;
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||
void *token;
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||
int secret;
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||
dotlock_t lockhandle;
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||
};
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static struct resource_item all_resources[MAX_KEYDB_RESOURCES];
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static int used_resources;
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||
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struct keydb_handle {
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int locked;
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||
int found;
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int saved_found;
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int current;
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int is_ephemeral;
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int used; /* items in active */
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struct resource_item active[MAX_KEYDB_RESOURCES];
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};
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static int lock_all (KEYDB_HANDLE hd);
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||
static void unlock_all (KEYDB_HANDLE hd);
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||
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||
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static void
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||
try_make_homedir (const char *fname)
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||
{
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||
const char *defhome = standard_homedir ();
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||
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||
/* Create the 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
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||
default homedir does start with a tilde. */
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if ( opt.dry_run || opt.no_homedir_creation )
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return;
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||
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||
if (
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#ifdef HAVE_W32_SYSTEM
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( !compare_filenames (fname, defhome) )
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#else
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( *defhome == '~'
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&& (strlen(fname) >= strlen (defhome+1)
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&& !strcmp(fname+strlen(fname)-strlen(defhome+1), defhome+1 ) ))
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|| (*defhome != '~' && !compare_filenames( fname, defhome ) )
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||
#endif
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||
)
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{
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||
if (gnupg_mkdir (fname, "-rwx"))
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log_info (_("can't create directory '%s': %s\n"),
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fname, strerror(errno) );
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||
else if (!opt.quiet )
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||
log_info (_("directory '%s' created\n"), fname);
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||
}
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}
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||
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||
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/* Handle the creation of a keybox if it does not yet exist. Take
|
||
into acount that other processes might have the keybox already
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locked. This lock check does not work if the directory itself is
|
||
not yet available. If R_CREATED is not NULL it will be set to true
|
||
if the function created a new keybox. */
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||
static int
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||
maybe_create_keybox (char *filename, int force, int *r_created)
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||
{
|
||
dotlock_t lockhd = NULL;
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||
FILE *fp;
|
||
int rc;
|
||
mode_t oldmask;
|
||
char *last_slash_in_filename;
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int save_slash;
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||
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if (r_created)
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*r_created = 0;
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||
|
||
/* A quick test whether the filename already exists. */
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||
if (!access (filename, F_OK))
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||
return 0;
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||
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||
/* If we don't want to create a new file at all, there is no need to
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||
go any further - bail out right here. */
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||
if (!force)
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return gpg_error (GPG_ERR_ENOENT);
|
||
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||
/* First of all we try to create the home directory. Note, that we
|
||
don't do any locking here because any sane application of gpg
|
||
would create the home directory by itself and not rely on gpg's
|
||
tricky auto-creation which is anyway only done for some home
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||
directory name patterns. */
|
||
last_slash_in_filename = strrchr (filename, DIRSEP_C);
|
||
#if HAVE_W32_SYSTEM
|
||
{
|
||
/* Windows may either have a slash or a backslash. Take care of it. */
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char *p = strrchr (filename, '/');
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if (!last_slash_in_filename || p > last_slash_in_filename)
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last_slash_in_filename = p;
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||
}
|
||
#endif /*HAVE_W32_SYSTEM*/
|
||
if (!last_slash_in_filename)
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||
return gpg_error (GPG_ERR_ENOENT); /* No slash at all - should
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not happen though. */
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save_slash = *last_slash_in_filename;
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||
*last_slash_in_filename = 0;
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||
if (access(filename, F_OK))
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||
{
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||
static int tried;
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if (!tried)
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{
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tried = 1;
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try_make_homedir (filename);
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}
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if (access (filename, F_OK))
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{
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rc = gpg_error_from_syserror ();
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*last_slash_in_filename = save_slash;
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goto leave;
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}
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}
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*last_slash_in_filename = save_slash;
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/* To avoid races with other instances of gpg trying to create or
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update the keybox (it is removed during an update for a short
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time), we do the next stuff in a locked state. */
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lockhd = dotlock_create (filename, 0);
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if (!lockhd)
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{
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/* A reason for this to fail is that the directory is not
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writable. However, this whole locking stuff does not make
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sense if this is the case. An empty non-writable directory
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with no keyring is not really useful at all. */
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if (opt.verbose)
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log_info ("can't allocate lock for '%s'\n", filename );
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if (!force)
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return gpg_error (GPG_ERR_ENOENT);
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else
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return gpg_error (GPG_ERR_GENERAL);
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}
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if ( dotlock_take (lockhd, -1) )
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{
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/* This is something bad. Probably a stale lockfile. */
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log_info ("can't lock '%s'\n", filename);
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rc = gpg_error (GPG_ERR_GENERAL);
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goto leave;
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}
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/* Now the real test while we are locked. */
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if (!access(filename, F_OK))
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{
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rc = 0; /* Okay, we may access the file now. */
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goto leave;
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}
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/* The file does not yet exist, create it now. */
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oldmask = umask (077);
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fp = fopen (filename, "w");
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if (!fp)
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{
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rc = gpg_error_from_syserror ();
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umask (oldmask);
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log_error (_("error creating keybox '%s': %s\n"),
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filename, gpg_strerror (rc));
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goto leave;
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}
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umask (oldmask);
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if (!opt.quiet)
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log_info (_("keybox '%s' created\n"), filename);
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if (r_created)
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*r_created = 1;
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fclose (fp);
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rc = 0;
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leave:
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if (lockhd)
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{
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dotlock_release (lockhd);
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dotlock_destroy (lockhd);
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}
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return rc;
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}
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/*
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* Register a resource (which currently may only be a keybox file).
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* The first keybox which is added by this function is created if it
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* does not exist. If AUTO_CREATED is not NULL it will be set to true
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* if the function has created a new keybox.
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*/
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int
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keydb_add_resource (const char *url, int force, int secret, int *auto_created)
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{
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static int any_secret, any_public;
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const char *resname = url;
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char *filename = NULL;
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int rc = 0;
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KeydbResourceType rt = KEYDB_RESOURCE_TYPE_NONE;
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if (auto_created)
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*auto_created = 0;
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/* Do we have an URL?
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gnupg-kbx:filename := this is a plain keybox
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filename := See what is is, but create as plain keybox.
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*/
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if (strlen (resname) > 10)
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{
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if (!strncmp (resname, "gnupg-kbx:", 10) )
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{
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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resname += 10;
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}
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#if !defined(HAVE_DRIVE_LETTERS) && !defined(__riscos__)
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else if (strchr (resname, ':'))
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{
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log_error ("invalid key resource URL '%s'\n", url );
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rc = gpg_error (GPG_ERR_GENERAL);
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goto leave;
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}
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#endif /* !HAVE_DRIVE_LETTERS && !__riscos__ */
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}
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if (*resname != DIRSEP_C )
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{ /* do tilde expansion etc */
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if (strchr(resname, DIRSEP_C) )
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filename = make_filename (resname, NULL);
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else
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filename = make_filename (opt.homedir, resname, NULL);
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}
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else
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filename = xstrdup (resname);
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if (!force)
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force = secret? !any_secret : !any_public;
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/* see whether we can determine the filetype */
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if (rt == KEYDB_RESOURCE_TYPE_NONE)
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{
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FILE *fp = fopen( filename, "rb" );
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if (fp)
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{
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u32 magic;
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/* FIXME: check for the keybox magic */
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if (fread (&magic, 4, 1, fp) == 1 )
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{
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if (magic == 0x13579ace || magic == 0xce9a5713)
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; /* GDBM magic - no more support */
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else
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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}
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else /* maybe empty: assume keybox */
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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fclose (fp);
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}
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else /* no file yet: create keybox */
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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}
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switch (rt)
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{
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case KEYDB_RESOURCE_TYPE_NONE:
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log_error ("unknown type of key resource '%s'\n", url );
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rc = gpg_error (GPG_ERR_GENERAL);
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goto leave;
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case KEYDB_RESOURCE_TYPE_KEYBOX:
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rc = maybe_create_keybox (filename, force, auto_created);
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if (rc)
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goto leave;
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/* Now register the file */
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{
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void *token = keybox_register_file (filename, secret);
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if (!token)
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; /* already registered - ignore it */
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else if (used_resources >= MAX_KEYDB_RESOURCES)
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rc = gpg_error (GPG_ERR_RESOURCE_LIMIT);
|
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else
|
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{
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||
all_resources[used_resources].type = rt;
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all_resources[used_resources].u.kr = NULL; /* Not used here */
|
||
all_resources[used_resources].token = token;
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||
all_resources[used_resources].secret = secret;
|
||
|
||
all_resources[used_resources].lockhandle
|
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= dotlock_create (filename, 0);
|
||
if (!all_resources[used_resources].lockhandle)
|
||
log_fatal ( _("can't create lock for '%s'\n"), filename);
|
||
|
||
/* Do a compress run if needed and the file is not locked. */
|
||
if (!dotlock_take (all_resources[used_resources].lockhandle, 0))
|
||
{
|
||
KEYBOX_HANDLE kbxhd = keybox_new_x509 (token, secret);
|
||
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||
if (kbxhd)
|
||
{
|
||
keybox_compress (kbxhd);
|
||
keybox_release (kbxhd);
|
||
}
|
||
dotlock_release (all_resources[used_resources].lockhandle);
|
||
}
|
||
|
||
used_resources++;
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
log_error ("resource type of '%s' not supported\n", url);
|
||
rc = gpg_error (GPG_ERR_NOT_SUPPORTED);
|
||
goto leave;
|
||
}
|
||
|
||
/* fixme: check directory permissions and print a warning */
|
||
|
||
leave:
|
||
if (rc)
|
||
log_error ("keyblock resource '%s': %s\n", filename, gpg_strerror(rc));
|
||
else if (secret)
|
||
any_secret = 1;
|
||
else
|
||
any_public = 1;
|
||
xfree (filename);
|
||
return rc;
|
||
}
|
||
|
||
|
||
KEYDB_HANDLE
|
||
keydb_new (int secret)
|
||
{
|
||
KEYDB_HANDLE hd;
|
||
int i, j;
|
||
|
||
hd = xcalloc (1, sizeof *hd);
|
||
hd->found = -1;
|
||
hd->saved_found = -1;
|
||
|
||
assert (used_resources <= MAX_KEYDB_RESOURCES);
|
||
for (i=j=0; i < used_resources; i++)
|
||
{
|
||
if (!all_resources[i].secret != !secret)
|
||
continue;
|
||
switch (all_resources[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
hd->active[j].type = all_resources[i].type;
|
||
hd->active[j].token = all_resources[i].token;
|
||
hd->active[j].secret = all_resources[i].secret;
|
||
hd->active[j].lockhandle = all_resources[i].lockhandle;
|
||
hd->active[j].u.kr = keybox_new_x509 (all_resources[i].token, secret);
|
||
if (!hd->active[j].u.kr)
|
||
{
|
||
xfree (hd);
|
||
return NULL; /* fixme: release all previously allocated handles*/
|
||
}
|
||
j++;
|
||
break;
|
||
}
|
||
}
|
||
hd->used = j;
|
||
|
||
active_handles++;
|
||
return hd;
|
||
}
|
||
|
||
void
|
||
keydb_release (KEYDB_HANDLE hd)
|
||
{
|
||
int i;
|
||
|
||
if (!hd)
|
||
return;
|
||
assert (active_handles > 0);
|
||
active_handles--;
|
||
|
||
unlock_all (hd);
|
||
for (i=0; i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_release (hd->active[i].u.kr);
|
||
break;
|
||
}
|
||
}
|
||
|
||
xfree (hd);
|
||
}
|
||
|
||
|
||
/* Return the name of the current resource. This is function first
|
||
looks for the last found found, then for the current search
|
||
position, and last returns the first available resource. The
|
||
returned string is only valid as long as the handle exists. This
|
||
function does only return NULL if no handle is specified, in all
|
||
other error cases an empty string is returned. */
|
||
const char *
|
||
keydb_get_resource_name (KEYDB_HANDLE hd)
|
||
{
|
||
int idx;
|
||
const char *s = NULL;
|
||
|
||
if (!hd)
|
||
return NULL;
|
||
|
||
if ( hd->found >= 0 && hd->found < hd->used)
|
||
idx = hd->found;
|
||
else if ( hd->current >= 0 && hd->current < hd->used)
|
||
idx = hd->current;
|
||
else
|
||
idx = 0;
|
||
|
||
switch (hd->active[idx].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
s = NULL;
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
s = keybox_get_resource_name (hd->active[idx].u.kr);
|
||
break;
|
||
}
|
||
|
||
return s? s: "";
|
||
}
|
||
|
||
/* Switch the handle into ephemeral mode and return the orginal value. */
|
||
int
|
||
keydb_set_ephemeral (KEYDB_HANDLE hd, int yes)
|
||
{
|
||
int i;
|
||
|
||
if (!hd)
|
||
return 0;
|
||
|
||
yes = !!yes;
|
||
if (hd->is_ephemeral != yes)
|
||
{
|
||
for (i=0; i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_set_ephemeral (hd->active[i].u.kr, yes);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
i = hd->is_ephemeral;
|
||
hd->is_ephemeral = yes;
|
||
return i;
|
||
}
|
||
|
||
|
||
/* If the keyring has not yet been locked, lock it now. This
|
||
operation is required before any update operation; it is optional
|
||
for an insert operation. The lock is released with
|
||
keydb_released. */
|
||
gpg_error_t
|
||
keydb_lock (KEYDB_HANDLE hd)
|
||
{
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_HANDLE);
|
||
if (hd->locked)
|
||
return 0; /* Already locked. */
|
||
return lock_all (hd);
|
||
}
|
||
|
||
|
||
|
||
static int
|
||
lock_all (KEYDB_HANDLE hd)
|
||
{
|
||
int i, rc = 0;
|
||
|
||
/* Fixme: This locking scheme may lead to deadlock if the resources
|
||
are not added in the same order by all processes. We are
|
||
currently only allowing one resource so it is not a problem. */
|
||
for (i=0; i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (hd->active[i].lockhandle)
|
||
rc = dotlock_take (hd->active[i].lockhandle, -1);
|
||
break;
|
||
}
|
||
if (rc)
|
||
break;
|
||
}
|
||
|
||
if (rc)
|
||
{
|
||
/* revert the already set locks */
|
||
for (i--; i >= 0; i--)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (hd->active[i].lockhandle)
|
||
dotlock_release (hd->active[i].lockhandle);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
hd->locked = 1;
|
||
|
||
/* make_dotlock () does not yet guarantee that errno is set, thus
|
||
we can't rely on the error reason and will simply use
|
||
EACCES. */
|
||
return rc? gpg_error (GPG_ERR_EACCES) : 0;
|
||
}
|
||
|
||
static void
|
||
unlock_all (KEYDB_HANDLE hd)
|
||
{
|
||
int i;
|
||
|
||
if (!hd->locked)
|
||
return;
|
||
|
||
for (i=hd->used-1; i >= 0; i--)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (hd->active[i].lockhandle)
|
||
dotlock_release (hd->active[i].lockhandle);
|
||
break;
|
||
}
|
||
}
|
||
hd->locked = 0;
|
||
}
|
||
|
||
|
||
|
||
/* Push the last found state if any. */
|
||
void
|
||
keydb_push_found_state (KEYDB_HANDLE hd)
|
||
{
|
||
if (!hd)
|
||
return;
|
||
|
||
if (hd->found < 0 || hd->found >= hd->used)
|
||
{
|
||
hd->saved_found = -1;
|
||
return;
|
||
}
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_push_found_state (hd->active[hd->found].u.kr);
|
||
break;
|
||
}
|
||
|
||
hd->saved_found = hd->found;
|
||
hd->found = -1;
|
||
}
|
||
|
||
|
||
/* Pop the last found state. */
|
||
void
|
||
keydb_pop_found_state (KEYDB_HANDLE hd)
|
||
{
|
||
if (!hd)
|
||
return;
|
||
|
||
hd->found = hd->saved_found;
|
||
hd->saved_found = -1;
|
||
if (hd->found < 0 || hd->found >= hd->used)
|
||
return;
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_pop_found_state (hd->active[hd->found].u.kr);
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
Return the last found object. Caller must free it. The returned
|
||
keyblock has the kbode flag bit 0 set for the node with the public
|
||
key used to locate the keyblock or flag bit 1 set for the user ID
|
||
node. */
|
||
int
|
||
keydb_get_cert (KEYDB_HANDLE hd, ksba_cert_t *r_cert)
|
||
{
|
||
int rc = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_get_cert (hd->active[hd->found].u.kr, r_cert);
|
||
break;
|
||
}
|
||
|
||
return rc;
|
||
}
|
||
|
||
/* Return a flag of the last found object. WHICH is the flag requested;
|
||
it should be one of the KEYBOX_FLAG_ values. If the operation is
|
||
successful, the flag value will be stored at the address given by
|
||
VALUE. Return 0 on success or an error code. */
|
||
gpg_error_t
|
||
keydb_get_flags (KEYDB_HANDLE hd, int which, int idx, unsigned int *value)
|
||
{
|
||
int err = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_NOTHING_FOUND);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
err = keybox_get_flags (hd->active[hd->found].u.kr, which, idx, value);
|
||
break;
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
/* Set a flag of the last found object. WHICH is the flag to be set; it
|
||
should be one of the KEYBOX_FLAG_ values. If the operation is
|
||
successful, the flag value will be stored in the keybox. Note,
|
||
that some flag values can't be updated and thus may return an
|
||
error, some other flag values may be masked out before an update.
|
||
Returns 0 on success or an error code. */
|
||
gpg_error_t
|
||
keydb_set_flags (KEYDB_HANDLE hd, int which, int idx, unsigned int value)
|
||
{
|
||
int err = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_NOTHING_FOUND);
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
err = keybox_set_flags (hd->active[hd->found].u.kr, which, idx, value);
|
||
break;
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
/*
|
||
* Insert a new Certificate into one of the resources.
|
||
*/
|
||
int
|
||
keydb_insert_cert (KEYDB_HANDLE hd, ksba_cert_t cert)
|
||
{
|
||
int rc = -1;
|
||
int idx;
|
||
unsigned char digest[20];
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if (opt.dry_run)
|
||
return 0;
|
||
|
||
if ( hd->found >= 0 && hd->found < hd->used)
|
||
idx = hd->found;
|
||
else if ( hd->current >= 0 && hd->current < hd->used)
|
||
idx = hd->current;
|
||
else
|
||
return gpg_error (GPG_ERR_GENERAL);
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
gpgsm_get_fingerprint (cert, GCRY_MD_SHA1, digest, NULL); /* kludge*/
|
||
|
||
switch (hd->active[idx].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_insert_cert (hd->active[idx].u.kr, cert, digest);
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
/* Update the current keyblock with KB. */
|
||
int
|
||
keydb_update_cert (KEYDB_HANDLE hd, ksba_cert_t cert)
|
||
{
|
||
int rc = 0;
|
||
unsigned char digest[20];
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
if (opt.dry_run)
|
||
return 0;
|
||
|
||
rc = lock_all (hd);
|
||
if (rc)
|
||
return rc;
|
||
|
||
gpgsm_get_fingerprint (cert, GCRY_MD_SHA1, digest, NULL); /* kludge*/
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_update_cert (hd->active[hd->found].u.kr, cert, digest);
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
/*
|
||
* The current keyblock or cert will be deleted.
|
||
*/
|
||
int
|
||
keydb_delete (KEYDB_HANDLE hd, int unlock)
|
||
{
|
||
int rc = -1;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
if( opt.dry_run )
|
||
return 0;
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_delete (hd->active[hd->found].u.kr);
|
||
break;
|
||
}
|
||
|
||
if (unlock)
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
* Locate the default writable key resource, so that the next
|
||
* operation (which is only relevant for inserts) will be done on this
|
||
* resource.
|
||
*/
|
||
int
|
||
keydb_locate_writable (KEYDB_HANDLE hd, const char *reserved)
|
||
{
|
||
int rc;
|
||
|
||
(void)reserved;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
rc = keydb_search_reset (hd); /* this does reset hd->current */
|
||
if (rc)
|
||
return rc;
|
||
|
||
for ( ; hd->current >= 0 && hd->current < hd->used; hd->current++)
|
||
{
|
||
switch (hd->active[hd->current].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
BUG();
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (keybox_is_writable (hd->active[hd->current].token))
|
||
return 0; /* found (hd->current is set to it) */
|
||
break;
|
||
}
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
* Rebuild the caches of all key resources.
|
||
*/
|
||
void
|
||
keydb_rebuild_caches (void)
|
||
{
|
||
int i;
|
||
|
||
for (i=0; i < used_resources; i++)
|
||
{
|
||
if (all_resources[i].secret)
|
||
continue;
|
||
switch (all_resources[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
/* rc = keybox_rebuild_cache (all_resources[i].token); */
|
||
/* if (rc) */
|
||
/* log_error (_("failed to rebuild keybox cache: %s\n"), */
|
||
/* g10_errstr (rc)); */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
* Start the next search on this handle right at the beginning
|
||
*/
|
||
int
|
||
keydb_search_reset (KEYDB_HANDLE hd)
|
||
{
|
||
int i, rc = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
hd->current = 0;
|
||
hd->found = -1;
|
||
/* and reset all resources */
|
||
for (i=0; !rc && i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_search_reset (hd->active[i].u.kr);
|
||
break;
|
||
}
|
||
}
|
||
return rc; /* fixme: we need to map error codes or share them with
|
||
all modules*/
|
||
}
|
||
|
||
/*
|
||
* Search through all keydb resources, starting at the current position,
|
||
* for a keyblock which contains one of the keys described in the DESC array.
|
||
*/
|
||
int
|
||
keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc, size_t ndesc)
|
||
{
|
||
int rc = -1;
|
||
unsigned long skipped;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
while (rc == -1 && hd->current >= 0 && hd->current < hd->used)
|
||
{
|
||
switch (hd->active[hd->current].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
BUG(); /* we should never see it here */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_search (hd->active[hd->current].u.kr, desc, ndesc,
|
||
KEYBOX_BLOBTYPE_X509,
|
||
NULL, &skipped);
|
||
break;
|
||
}
|
||
if (rc == -1) /* EOF -> switch to next resource */
|
||
hd->current++;
|
||
else if (!rc)
|
||
hd->found = hd->current;
|
||
}
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
int
|
||
keydb_search_first (KEYDB_HANDLE hd)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_FIRST;
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_next (KEYDB_HANDLE hd)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_NEXT;
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_kid (KEYDB_HANDLE hd, u32 *kid)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
(void)kid;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_LONG_KID;
|
||
desc.u.kid[0] = kid[0];
|
||
desc.u.kid[1] = kid[1];
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_fpr (KEYDB_HANDLE hd, const byte *fpr)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_FPR;
|
||
memcpy (desc.u.fpr, fpr, 20);
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_issuer (KEYDB_HANDLE hd, const char *issuer)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
int rc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_ISSUER;
|
||
desc.u.name = issuer;
|
||
rc = keydb_search (hd, &desc, 1);
|
||
return rc;
|
||
}
|
||
|
||
int
|
||
keydb_search_issuer_sn (KEYDB_HANDLE hd,
|
||
const char *issuer, ksba_const_sexp_t serial)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
int rc;
|
||
const unsigned char *s;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_ISSUER_SN;
|
||
s = serial;
|
||
if (*s !='(')
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
s++;
|
||
for (desc.snlen = 0; digitp (s); s++)
|
||
desc.snlen = 10*desc.snlen + atoi_1 (s);
|
||
if (*s !=':')
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
desc.sn = s+1;
|
||
desc.u.name = issuer;
|
||
rc = keydb_search (hd, &desc, 1);
|
||
return rc;
|
||
}
|
||
|
||
int
|
||
keydb_search_subject (KEYDB_HANDLE hd, const char *name)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
int rc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_SUBJECT;
|
||
desc.u.name = name;
|
||
rc = keydb_search (hd, &desc, 1);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
/* Store the certificate in the key DB but make sure that it does not
|
||
already exists. We do this simply by comparing the fingerprint.
|
||
If EXISTED is not NULL it will be set to true if the certificate
|
||
was already in the DB. */
|
||
int
|
||
keydb_store_cert (ksba_cert_t cert, int ephemeral, int *existed)
|
||
{
|
||
KEYDB_HANDLE kh;
|
||
int rc;
|
||
unsigned char fpr[20];
|
||
|
||
if (existed)
|
||
*existed = 0;
|
||
|
||
if (!gpgsm_get_fingerprint (cert, 0, fpr, NULL))
|
||
{
|
||
log_error (_("failed to get the fingerprint\n"));
|
||
return gpg_error (GPG_ERR_GENERAL);
|
||
}
|
||
|
||
kh = keydb_new (0);
|
||
if (!kh)
|
||
{
|
||
log_error (_("failed to allocate keyDB handle\n"));
|
||
return gpg_error (GPG_ERR_ENOMEM);;
|
||
}
|
||
|
||
if (ephemeral)
|
||
keydb_set_ephemeral (kh, 1);
|
||
|
||
rc = lock_all (kh);
|
||
if (rc)
|
||
return rc;
|
||
|
||
rc = keydb_search_fpr (kh, fpr);
|
||
if (rc != -1)
|
||
{
|
||
keydb_release (kh);
|
||
if (!rc)
|
||
{
|
||
if (existed)
|
||
*existed = 1;
|
||
return 0; /* okay */
|
||
}
|
||
log_error (_("problem looking for existing certificate: %s\n"),
|
||
gpg_strerror (rc));
|
||
return rc;
|
||
}
|
||
|
||
rc = keydb_locate_writable (kh, 0);
|
||
if (rc)
|
||
{
|
||
log_error (_("error finding writable keyDB: %s\n"), gpg_strerror (rc));
|
||
keydb_release (kh);
|
||
return rc;
|
||
}
|
||
|
||
rc = keydb_insert_cert (kh, cert);
|
||
if (rc)
|
||
{
|
||
log_error (_("error storing certificate: %s\n"), gpg_strerror (rc));
|
||
keydb_release (kh);
|
||
return rc;
|
||
}
|
||
keydb_release (kh);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* This is basically keydb_set_flags but it implements a complete
|
||
transaction by locating the certificate in the DB and updating the
|
||
flags. */
|
||
gpg_error_t
|
||
keydb_set_cert_flags (ksba_cert_t cert, int ephemeral,
|
||
int which, int idx,
|
||
unsigned int mask, unsigned int value)
|
||
{
|
||
KEYDB_HANDLE kh;
|
||
gpg_error_t err;
|
||
unsigned char fpr[20];
|
||
unsigned int old_value;
|
||
|
||
if (!gpgsm_get_fingerprint (cert, 0, fpr, NULL))
|
||
{
|
||
log_error (_("failed to get the fingerprint\n"));
|
||
return gpg_error (GPG_ERR_GENERAL);
|
||
}
|
||
|
||
kh = keydb_new (0);
|
||
if (!kh)
|
||
{
|
||
log_error (_("failed to allocate keyDB handle\n"));
|
||
return gpg_error (GPG_ERR_ENOMEM);;
|
||
}
|
||
|
||
if (ephemeral)
|
||
keydb_set_ephemeral (kh, 1);
|
||
|
||
err = keydb_lock (kh);
|
||
if (err)
|
||
{
|
||
log_error (_("error locking keybox: %s\n"), gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
|
||
err = keydb_search_fpr (kh, fpr);
|
||
if (err)
|
||
{
|
||
if (err == -1)
|
||
err = gpg_error (GPG_ERR_NOT_FOUND);
|
||
else
|
||
log_error (_("problem re-searching certificate: %s\n"),
|
||
gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
|
||
err = keydb_get_flags (kh, which, idx, &old_value);
|
||
if (err)
|
||
{
|
||
log_error (_("error getting stored flags: %s\n"), gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
|
||
value = ((old_value & ~mask) | (value & mask));
|
||
|
||
if (value != old_value)
|
||
{
|
||
err = keydb_set_flags (kh, which, idx, value);
|
||
if (err)
|
||
{
|
||
log_error (_("error storing flags: %s\n"), gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
}
|
||
|
||
keydb_release (kh);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Reset all the certificate flags we have stored with the certificates
|
||
for performance reasons. */
|
||
void
|
||
keydb_clear_some_cert_flags (ctrl_t ctrl, strlist_t names)
|
||
{
|
||
gpg_error_t err;
|
||
KEYDB_HANDLE hd = NULL;
|
||
KEYDB_SEARCH_DESC *desc = NULL;
|
||
int ndesc;
|
||
strlist_t sl;
|
||
int rc=0;
|
||
unsigned int old_value, value;
|
||
|
||
(void)ctrl;
|
||
|
||
hd = keydb_new (0);
|
||
if (!hd)
|
||
{
|
||
log_error ("keydb_new failed\n");
|
||
goto leave;
|
||
}
|
||
|
||
if (!names)
|
||
ndesc = 1;
|
||
else
|
||
{
|
||
for (sl=names, ndesc=0; sl; sl = sl->next, ndesc++)
|
||
;
|
||
}
|
||
|
||
desc = xtrycalloc (ndesc, sizeof *desc);
|
||
if (!ndesc)
|
||
{
|
||
log_error ("allocating memory failed: %s\n",
|
||
gpg_strerror (out_of_core ()));
|
||
goto leave;
|
||
}
|
||
|
||
if (!names)
|
||
desc[0].mode = KEYDB_SEARCH_MODE_FIRST;
|
||
else
|
||
{
|
||
for (ndesc=0, sl=names; sl; sl = sl->next)
|
||
{
|
||
rc = classify_user_id (sl->d, desc+ndesc, 0);
|
||
if (rc)
|
||
{
|
||
log_error ("key '%s' not found: %s\n",
|
||
sl->d, gpg_strerror (rc));
|
||
rc = 0;
|
||
}
|
||
else
|
||
ndesc++;
|
||
}
|
||
}
|
||
|
||
err = keydb_lock (hd);
|
||
if (err)
|
||
{
|
||
log_error (_("error locking keybox: %s\n"), gpg_strerror (err));
|
||
goto leave;
|
||
}
|
||
|
||
while (!(rc = keydb_search (hd, desc, ndesc)))
|
||
{
|
||
if (!names)
|
||
desc[0].mode = KEYDB_SEARCH_MODE_NEXT;
|
||
|
||
err = keydb_get_flags (hd, KEYBOX_FLAG_VALIDITY, 0, &old_value);
|
||
if (err)
|
||
{
|
||
log_error (_("error getting stored flags: %s\n"),
|
||
gpg_strerror (err));
|
||
goto leave;
|
||
}
|
||
|
||
value = (old_value & ~VALIDITY_REVOKED);
|
||
if (value != old_value)
|
||
{
|
||
err = keydb_set_flags (hd, KEYBOX_FLAG_VALIDITY, 0, value);
|
||
if (err)
|
||
{
|
||
log_error (_("error storing flags: %s\n"), gpg_strerror (err));
|
||
goto leave;
|
||
}
|
||
}
|
||
}
|
||
if (rc && rc != -1)
|
||
log_error ("keydb_search failed: %s\n", gpg_strerror (rc));
|
||
|
||
leave:
|
||
xfree (desc);
|
||
keydb_release (hd);
|
||
}
|