mirror of
git://git.gnupg.org/gnupg.git
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f0f71a721c
* g10/keyring.c (keyring_get_keyblock): Whitelist allowed packet types. * g10/keydb.c (parse_keyblock_image): Ditto. -- The keyring DB code did not reject packets which don't belong into a keyring. If for example the keyblock contains a literal data packet it is expected that the processing code stops at the data packet and reads from the input stream which is referenced from the data packets. Obviously the keyring processing code does not and cannot do that. However, when exporting this messes up the IOBUF and leads to an invalid read of sizeof (int). We now skip all packets which are not allowed in a keyring. Reported-by: Hanno Böck <hanno@hboeck.de> Test data: gpg2 --no-default-keyring --keyring FILE --export >/dev/null With this unpacked data for FILE: -----BEGIN PGP ARMORED FILE----- mI0EVNP2zQEEALvETPVDCJDBXkegF4esiV1fqlne40yJnCmJeDEJYocwFPXfFA86 sSGjInzgDbpbC9gQPwq91Qe9x3Vy81CkyVonPOejhINlzfpzqAAa3A6viJccZTwt DJ8E/I9jg53sbYW8q+VgfLn1hlggH/XQRT0HkXMP5y9ClURYnTsNwJhXABEBAAGs CXRlc3QgdGVzdIi5BBMBCgAjBQJU0/bNAhsDBwsJCAcDAgEGFQgCCQoLBBYCAwEC HgECF4AACgkQlsmuCapsqYLvtQP/byY0tM0Lc3moftbHQZ2eHj9ykLjsCjeMDfPx kZUUtUS3HQaqgZLZOeqPjM7XgGh5hJsd9pfhmRWJ0x+iGB47XQNpRTtdLBV/WMCS l5z3uW7e9Md7QVUVuSlJnBgQHTS6EgP8JQadPkAiF+jgpJZXP+gFs2j3gobS0qUF eyTtxs+wAgAD =uIt9 -----END PGP ARMORED FILE----- Signed-off-by: Werner Koch <wk@gnupg.org>
1559 lines
42 KiB
C
1559 lines
42 KiB
C
/* keydb.c - key database dispatcher
|
||
* Copyright (C) 2001, 2002, 2003, 2004, 2005,
|
||
* 2008, 2009, 2011, 2013 Free Software Foundation, Inc.
|
||
* Coyrright (C) 2013 Werner Koch
|
||
*
|
||
* 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.
|
||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#include <config.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <errno.h>
|
||
#include <assert.h>
|
||
#include <sys/types.h>
|
||
#include <sys/stat.h>
|
||
#include <unistd.h>
|
||
|
||
#include "gpg.h"
|
||
#include "util.h"
|
||
#include "options.h"
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||
#include "main.h" /*try_make_homedir ()*/
|
||
#include "packet.h"
|
||
#include "keyring.h"
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||
#include "../kbx/keybox.h"
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||
#include "keydb.h"
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||
#include "i18n.h"
|
||
|
||
static int active_handles;
|
||
|
||
typedef enum
|
||
{
|
||
KEYDB_RESOURCE_TYPE_NONE = 0,
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||
KEYDB_RESOURCE_TYPE_KEYRING,
|
||
KEYDB_RESOURCE_TYPE_KEYBOX
|
||
} KeydbResourceType;
|
||
#define MAX_KEYDB_RESOURCES 40
|
||
|
||
struct resource_item
|
||
{
|
||
KeydbResourceType type;
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||
union {
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||
KEYRING_HANDLE kr;
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||
KEYBOX_HANDLE kb;
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||
} u;
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||
void *token;
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||
};
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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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||
static void *primary_keyring=NULL;
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||
|
||
struct keydb_handle
|
||
{
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||
int locked;
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||
int found;
|
||
unsigned long skipped_long_blobs;
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||
int no_caching;
|
||
int current;
|
||
int used; /* Number of items in ACTIVE. */
|
||
struct resource_item active[MAX_KEYDB_RESOURCES];
|
||
};
|
||
|
||
|
||
/* This is a simple cache used to return the last result of a
|
||
successful fingerprint search. This works only for keybox resources
|
||
because (due to lack of a copy_keyblock function) we need to store
|
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an image of the keyblock which is fortunately instantly available
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||
for keyboxes. */
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||
enum keyblock_cache_states {
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||
KEYBLOCK_CACHE_EMPTY,
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KEYBLOCK_CACHE_PREPARED,
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KEYBLOCK_CACHE_FILLED
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};
|
||
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struct {
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||
enum keyblock_cache_states state;
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byte fpr[MAX_FINGERPRINT_LEN];
|
||
iobuf_t iobuf; /* Image of the keyblock. */
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||
u32 *sigstatus;
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||
int pk_no;
|
||
int uid_no;
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||
} keyblock_cache;
|
||
|
||
|
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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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||
|
||
static void
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||
keyblock_cache_clear (void)
|
||
{
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||
keyblock_cache.state = KEYBLOCK_CACHE_EMPTY;
|
||
xfree (keyblock_cache.sigstatus);
|
||
keyblock_cache.sigstatus = NULL;
|
||
iobuf_close (keyblock_cache.iobuf);
|
||
keyblock_cache.iobuf = NULL;
|
||
}
|
||
|
||
|
||
/* Handle the creation of a keyring or a keybox if it does not yet
|
||
exist. Take into account that other processes might have the
|
||
keyring/keybox already locked. This lock check does not work if
|
||
the directory itself is not yet available. If is IS_BOX is true
|
||
the filename is expected to be a keybox. If FORCE_CREATE is true
|
||
the keyring or keybox shall be created. */
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static int
|
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maybe_create_keyring_or_box (char *filename, int is_box, int force_create)
|
||
{
|
||
dotlock_t lockhd = NULL;
|
||
IOBUF iobuf;
|
||
int rc;
|
||
mode_t oldmask;
|
||
char *last_slash_in_filename;
|
||
int save_slash;
|
||
|
||
/* A quick test whether the filename already exists. */
|
||
if (!access (filename, F_OK))
|
||
return 0;
|
||
|
||
/* 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_create)
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return gpg_error (GPG_ERR_ENOENT);
|
||
|
||
/* 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
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||
would create the home directory by itself and not rely on gpg's
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tricky auto-creation which is anyway only done for certain home
|
||
directory name pattern. */
|
||
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. */
|
||
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;
|
||
}
|
||
#endif /*HAVE_W32_SYSTEM*/
|
||
if (!last_slash_in_filename)
|
||
return gpg_error (GPG_ERR_ENOENT); /* No slash at all - should
|
||
not happen though. */
|
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save_slash = *last_slash_in_filename;
|
||
*last_slash_in_filename = 0;
|
||
if (access(filename, F_OK))
|
||
{
|
||
static int tried;
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||
|
||
if (!tried)
|
||
{
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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 keyring (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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rc = gpg_error_from_syserror ();
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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': %s\n",
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filename, gpg_strerror (rc));
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if (!force_create)
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return gpg_error (GPG_ERR_ENOENT); /* Won't happen. */
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else
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return rc;
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}
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if ( dotlock_take (lockhd, -1) )
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{
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rc = gpg_error_from_syserror ();
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/* This is something bad. Probably a stale lockfile. */
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log_info ("can't lock '%s': %s\n", filename, gpg_strerror (rc));
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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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if (is_secured_filename (filename))
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{
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iobuf = NULL;
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gpg_err_set_errno (EPERM);
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}
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else
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iobuf = iobuf_create (filename, 0);
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umask (oldmask);
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if (!iobuf)
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{
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rc = gpg_error_from_syserror ();
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if (is_box)
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log_error (_("error creating keybox '%s': %s\n"),
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filename, gpg_strerror (rc));
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else
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log_error (_("error creating keyring '%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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iobuf_close (iobuf);
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/* Must invalidate that ugly cache */
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iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, filename);
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/* Make sure that at least one record is in a new keybox file, so
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that the detection magic will work the next time it is used. */
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if (is_box)
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{
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FILE *fp = fopen (filename, "w");
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if (!fp)
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rc = gpg_error_from_syserror ();
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else
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{
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rc = _keybox_write_header_blob (fp, 1);
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fclose (fp);
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}
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if (rc)
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{
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if (is_box)
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log_error (_("error creating keybox '%s': %s\n"),
|
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filename, gpg_strerror (rc));
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else
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log_error (_("error creating keyring '%s': %s\n"),
|
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filename, gpg_strerror (rc));
|
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goto leave;
|
||
}
|
||
}
|
||
|
||
if (!opt.quiet)
|
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{
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if (is_box)
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log_info (_("keybox '%s' created\n"), filename);
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else
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log_info (_("keyring '%s' created\n"), filename);
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}
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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;
|
||
}
|
||
|
||
|
||
/* Helper for keydb_add_resource. Opens FILENAME to figures out the
|
||
resource type. Returns the resource type and a flag at R_NOTFOUND
|
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indicating whether FILENAME could be opened at all. If the openpgp
|
||
flag is set in a keybox header, R_OPENPGP will be set to true. */
|
||
static KeydbResourceType
|
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rt_from_file (const char *filename, int *r_found, int *r_openpgp)
|
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{
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u32 magic;
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unsigned char verbuf[4];
|
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FILE *fp;
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KeydbResourceType rt = KEYDB_RESOURCE_TYPE_NONE;
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|
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*r_found = *r_openpgp = 0;
|
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fp = fopen (filename, "rb");
|
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if (fp)
|
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{
|
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*r_found = 1;
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|
||
if (fread (&magic, 4, 1, fp) == 1 )
|
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{
|
||
if (magic == 0x13579ace || magic == 0xce9a5713)
|
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; /* GDBM magic - not anymore supported. */
|
||
else if (fread (&verbuf, 4, 1, fp) == 1
|
||
&& verbuf[0] == 1
|
||
&& fread (&magic, 4, 1, fp) == 1
|
||
&& !memcmp (&magic, "KBXf", 4))
|
||
{
|
||
if ((verbuf[3] & 0x02))
|
||
*r_openpgp = 1;
|
||
rt = KEYDB_RESOURCE_TYPE_KEYBOX;
|
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}
|
||
else
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||
rt = KEYDB_RESOURCE_TYPE_KEYRING;
|
||
}
|
||
else /* Maybe empty: assume keyring. */
|
||
rt = KEYDB_RESOURCE_TYPE_KEYRING;
|
||
|
||
fclose (fp);
|
||
}
|
||
|
||
return rt;
|
||
}
|
||
|
||
|
||
/*
|
||
* Register a resource (keyring or aeybox). The first keyring or
|
||
* keybox which is added by this function is created if it does not
|
||
* exist. FLAGS are a combination of the KEYDB_RESOURCE_FLAG_
|
||
* constants as defined in keydb.h.
|
||
*/
|
||
gpg_error_t
|
||
keydb_add_resource (const char *url, unsigned int flags)
|
||
{
|
||
static int any_registered;
|
||
const char *resname = url;
|
||
char *filename = NULL;
|
||
int create;
|
||
int read_only = !!(flags&KEYDB_RESOURCE_FLAG_READONLY);
|
||
int is_default = !!(flags&KEYDB_RESOURCE_FLAG_DEFAULT);
|
||
int rc = 0;
|
||
KeydbResourceType rt = KEYDB_RESOURCE_TYPE_NONE;
|
||
void *token;
|
||
|
||
/* Create the resource if it is the first registered one. */
|
||
create = (!read_only && !any_registered);
|
||
|
||
/* Do we have an URL?
|
||
* gnupg-ring:filename := this is a plain keyring.
|
||
* gnupg-kbx:filename := this is a keybox file.
|
||
* filename := See what is is, but create as plain keyring.
|
||
*/
|
||
if (strlen (resname) > 11 && !strncmp( resname, "gnupg-ring:", 11) )
|
||
{
|
||
rt = KEYDB_RESOURCE_TYPE_KEYRING;
|
||
resname += 11;
|
||
}
|
||
else if (strlen (resname) > 10 && !strncmp (resname, "gnupg-kbx:", 10) )
|
||
{
|
||
rt = KEYDB_RESOURCE_TYPE_KEYBOX;
|
||
resname += 10;
|
||
}
|
||
#if !defined(HAVE_DRIVE_LETTERS) && !defined(__riscos__)
|
||
else if (strchr (resname, ':'))
|
||
{
|
||
log_error ("invalid key resource URL '%s'\n", url );
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
goto leave;
|
||
}
|
||
#endif /* !HAVE_DRIVE_LETTERS && !__riscos__ */
|
||
|
||
if (*resname != DIRSEP_C )
|
||
{
|
||
/* Do tilde expansion etc. */
|
||
if (strchr(resname, DIRSEP_C) )
|
||
filename = make_filename (resname, NULL);
|
||
else
|
||
filename = make_filename (opt.homedir, resname, NULL);
|
||
}
|
||
else
|
||
filename = xstrdup (resname);
|
||
|
||
/* See whether we can determine the filetype. */
|
||
if (rt == KEYDB_RESOURCE_TYPE_NONE)
|
||
{
|
||
int found, openpgp_flag;
|
||
int pass = 0;
|
||
size_t filenamelen;
|
||
|
||
check_again:
|
||
filenamelen = strlen (filename);
|
||
rt = rt_from_file (filename, &found, &openpgp_flag);
|
||
if (found)
|
||
{
|
||
/* The file exists and we have the resource type in RT.
|
||
|
||
Now let us check whether in addition to the "pubring.gpg"
|
||
a "pubring.kbx with openpgp keys exists. This is so that
|
||
GPG 2.1 will use an existing "pubring.kbx" by default iff
|
||
that file has been created or used by 2.1. This check is
|
||
needed because after creation or use of the kbx file with
|
||
2.1 an older version of gpg may have created a new
|
||
pubring.gpg for its own use. */
|
||
if (!pass && is_default && rt == KEYDB_RESOURCE_TYPE_KEYRING
|
||
&& filenamelen > 4 && !strcmp (filename+filenamelen-4, ".gpg"))
|
||
{
|
||
strcpy (filename+filenamelen-4, ".kbx");
|
||
if ((rt_from_file (filename, &found, &openpgp_flag)
|
||
== KEYDB_RESOURCE_TYPE_KEYBOX) && found && openpgp_flag)
|
||
rt = KEYDB_RESOURCE_TYPE_KEYBOX;
|
||
else /* Restore filename */
|
||
strcpy (filename+filenamelen-4, ".gpg");
|
||
}
|
||
}
|
||
else if (!pass
|
||
&& is_default && create
|
||
&& filenamelen > 4 && !strcmp (filename+filenamelen-4, ".gpg"))
|
||
{
|
||
/* The file does not exist, the default resource has been
|
||
requested, the file shall be created, and the file has a
|
||
".gpg" suffix. Change the suffix to ".kbx" and try once
|
||
more. This way we achieve that we open an existing
|
||
".gpg" keyring, but create a new keybox file with an
|
||
".kbx" suffix. */
|
||
strcpy (filename+filenamelen-4, ".kbx");
|
||
pass++;
|
||
goto check_again;
|
||
}
|
||
else /* No file yet: create keybox. */
|
||
rt = KEYDB_RESOURCE_TYPE_KEYBOX;
|
||
}
|
||
|
||
switch (rt)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
log_error ("unknown type of key resource '%s'\n", url );
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
goto leave;
|
||
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
rc = maybe_create_keyring_or_box (filename, 0, create);
|
||
if (rc)
|
||
goto leave;
|
||
|
||
if (keyring_register_filename (filename, read_only, &token))
|
||
{
|
||
if (used_resources >= MAX_KEYDB_RESOURCES)
|
||
rc = gpg_error (GPG_ERR_RESOURCE_LIMIT);
|
||
else
|
||
{
|
||
if ((flags & KEYDB_RESOURCE_FLAG_PRIMARY))
|
||
primary_keyring = token;
|
||
all_resources[used_resources].type = rt;
|
||
all_resources[used_resources].u.kr = NULL; /* Not used here */
|
||
all_resources[used_resources].token = token;
|
||
used_resources++;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* This keyring was already registered, so ignore it.
|
||
However, we can still mark it as primary even if it was
|
||
already registered. */
|
||
if ((flags & KEYDB_RESOURCE_FLAG_PRIMARY))
|
||
primary_keyring = token;
|
||
}
|
||
break;
|
||
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
{
|
||
rc = maybe_create_keyring_or_box (filename, 1, create);
|
||
if (rc)
|
||
goto leave;
|
||
|
||
/* FIXME: How do we register a read-only keybox? */
|
||
token = keybox_register_file (filename, 0);
|
||
if (token)
|
||
{
|
||
if (used_resources >= MAX_KEYDB_RESOURCES)
|
||
rc = gpg_error (GPG_ERR_RESOURCE_LIMIT);
|
||
else
|
||
{
|
||
/* if ((flags & KEYDB_RESOURCE_FLAG_PRIMARY)) */
|
||
/* primary_keyring = token; */
|
||
all_resources[used_resources].type = rt;
|
||
all_resources[used_resources].u.kb = NULL; /* Not used here */
|
||
all_resources[used_resources].token = token;
|
||
|
||
/* FIXME: Do a compress run if needed and no other
|
||
user is currently using the keybox. */
|
||
|
||
used_resources++;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Already registered. We will mark it as the primary key
|
||
if requested. */
|
||
/* FIXME: How to do that? Change the keybox interface? */
|
||
/* if ((flags & KEYDB_RESOURCE_FLAG_PRIMARY)) */
|
||
/* primary_keyring = token; */
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
log_error ("resource type of '%s' not supported\n", url);
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
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
|
||
any_registered = 1;
|
||
xfree (filename);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
|
||
KEYDB_HANDLE
|
||
keydb_new (void)
|
||
{
|
||
KEYDB_HANDLE hd;
|
||
int i, j;
|
||
|
||
if (DBG_CLOCK)
|
||
log_clock ("keydb_new");
|
||
|
||
hd = xmalloc_clear (sizeof *hd);
|
||
hd->found = -1;
|
||
|
||
assert (used_resources <= MAX_KEYDB_RESOURCES);
|
||
for (i=j=0; i < used_resources; i++)
|
||
{
|
||
switch (all_resources[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
hd->active[j].type = all_resources[i].type;
|
||
hd->active[j].token = all_resources[i].token;
|
||
hd->active[j].u.kr = keyring_new (all_resources[i].token);
|
||
if (!hd->active[j].u.kr) {
|
||
xfree (hd);
|
||
return NULL; /* fixme: release all previously allocated handles*/
|
||
}
|
||
j++;
|
||
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].u.kb = keybox_new_openpgp (all_resources[i].token, 0);
|
||
if (!hd->active[j].u.kb)
|
||
{
|
||
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_KEYRING:
|
||
keyring_release (hd->active[i].u.kr);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_release (hd->active[i].u.kb);
|
||
break;
|
||
}
|
||
}
|
||
|
||
xfree (hd);
|
||
}
|
||
|
||
|
||
/* Set a flag on handle to not use cached results. This is required
|
||
for updating a keyring and for key listins. Fixme: Using a new
|
||
parameter for keydb_new might be a better solution. */
|
||
void
|
||
keydb_disable_caching (KEYDB_HANDLE hd)
|
||
{
|
||
if (hd)
|
||
hd->no_caching = 1;
|
||
}
|
||
|
||
|
||
/*
|
||
* 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_KEYRING:
|
||
s = keyring_get_resource_name (hd->active[idx].u.kr);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
s = keybox_get_resource_name (hd->active[idx].u.kb);
|
||
break;
|
||
}
|
||
|
||
return s? s: "";
|
||
}
|
||
|
||
|
||
|
||
static int
|
||
lock_all (KEYDB_HANDLE hd)
|
||
{
|
||
int i, rc = 0;
|
||
|
||
/* Fixme: This locking scheme may lead to a 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.
|
||
[Oops: Who claimed the latter]
|
||
|
||
To fix this we need to use a lock file to protect lock_all. */
|
||
|
||
for (i=0; !rc && i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
rc = keyring_lock (hd->active[i].u.kr, 1);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_lock (hd->active[i].u.kb, 1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (rc)
|
||
{
|
||
/* Revert the already taken locks. */
|
||
for (i--; i >= 0; i--)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
keyring_lock (hd->active[i].u.kr, 0);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_lock (hd->active[i].u.kb, 0);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
hd->locked = 1;
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
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_KEYRING:
|
||
keyring_lock (hd->active[i].u.kr, 0);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_lock (hd->active[i].u.kb, 0);
|
||
break;
|
||
}
|
||
}
|
||
hd->locked = 0;
|
||
}
|
||
|
||
|
||
static gpg_error_t
|
||
parse_keyblock_image (iobuf_t iobuf, int pk_no, int uid_no,
|
||
const u32 *sigstatus, kbnode_t *r_keyblock)
|
||
{
|
||
gpg_error_t err;
|
||
PACKET *pkt;
|
||
kbnode_t keyblock = NULL;
|
||
kbnode_t node, *tail;
|
||
int in_cert, save_mode;
|
||
u32 n_sigs;
|
||
int pk_count, uid_count;
|
||
|
||
*r_keyblock = NULL;
|
||
|
||
pkt = xtrymalloc (sizeof *pkt);
|
||
if (!pkt)
|
||
return gpg_error_from_syserror ();
|
||
init_packet (pkt);
|
||
save_mode = set_packet_list_mode (0);
|
||
in_cert = 0;
|
||
n_sigs = 0;
|
||
tail = NULL;
|
||
pk_count = uid_count = 0;
|
||
while ((err = parse_packet (iobuf, pkt)) != -1)
|
||
{
|
||
if (gpg_err_code (err) == GPG_ERR_UNKNOWN_PACKET)
|
||
{
|
||
free_packet (pkt);
|
||
init_packet (pkt);
|
||
continue;
|
||
}
|
||
if (err)
|
||
{
|
||
log_error ("parse_keyblock_image: read error: %s\n",
|
||
gpg_strerror (err));
|
||
err = gpg_error (GPG_ERR_INV_KEYRING);
|
||
break;
|
||
}
|
||
|
||
/* Filter allowed packets. */
|
||
switch (pkt->pkttype)
|
||
{
|
||
case PKT_PUBLIC_KEY:
|
||
case PKT_PUBLIC_SUBKEY:
|
||
case PKT_SECRET_KEY:
|
||
case PKT_SECRET_SUBKEY:
|
||
case PKT_USER_ID:
|
||
case PKT_ATTRIBUTE:
|
||
case PKT_SIGNATURE:
|
||
break; /* Allowed per RFC. */
|
||
|
||
default:
|
||
/* Note that can't allow ring trust packets here and some of
|
||
the other GPG specific packets don't make sense either. */
|
||
log_error ("skipped packet of type %d in keybox\n",
|
||
(int)pkt->pkttype);
|
||
free_packet(pkt);
|
||
init_packet(pkt);
|
||
continue;
|
||
}
|
||
|
||
/* Other sanity checks. */
|
||
if (!in_cert && pkt->pkttype != PKT_PUBLIC_KEY)
|
||
{
|
||
log_error ("parse_keyblock_image: first packet in a keybox blob "
|
||
"is not a public key packet\n");
|
||
err = gpg_error (GPG_ERR_INV_KEYRING);
|
||
break;
|
||
}
|
||
if (in_cert && (pkt->pkttype == PKT_PUBLIC_KEY
|
||
|| pkt->pkttype == PKT_SECRET_KEY))
|
||
{
|
||
log_error ("parse_keyblock_image: "
|
||
"multiple keyblocks in a keybox blob\n");
|
||
err = gpg_error (GPG_ERR_INV_KEYRING);
|
||
break;
|
||
}
|
||
in_cert = 1;
|
||
|
||
if (pkt->pkttype == PKT_SIGNATURE && sigstatus)
|
||
{
|
||
PKT_signature *sig = pkt->pkt.signature;
|
||
|
||
n_sigs++;
|
||
if (n_sigs > sigstatus[0])
|
||
{
|
||
log_error ("parse_keyblock_image: "
|
||
"more signatures than found in the meta data\n");
|
||
err = gpg_error (GPG_ERR_INV_KEYRING);
|
||
break;
|
||
|
||
}
|
||
if (sigstatus[n_sigs])
|
||
{
|
||
sig->flags.checked = 1;
|
||
if (sigstatus[n_sigs] == 1 )
|
||
; /* missing key */
|
||
else if (sigstatus[n_sigs] == 2 )
|
||
; /* bad signature */
|
||
else if (sigstatus[n_sigs] < 0x10000000)
|
||
; /* bad flag */
|
||
else
|
||
{
|
||
sig->flags.valid = 1;
|
||
/* Fixme: Shall we set the expired flag here? */
|
||
}
|
||
}
|
||
}
|
||
|
||
node = new_kbnode (pkt);
|
||
|
||
switch (pkt->pkttype)
|
||
{
|
||
case PKT_PUBLIC_KEY:
|
||
case PKT_PUBLIC_SUBKEY:
|
||
case PKT_SECRET_KEY:
|
||
case PKT_SECRET_SUBKEY:
|
||
if (++pk_count == pk_no)
|
||
node->flag |= 1;
|
||
break;
|
||
|
||
case PKT_USER_ID:
|
||
if (++uid_count == uid_no)
|
||
node->flag |= 2;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (!keyblock)
|
||
keyblock = node;
|
||
else
|
||
*tail = node;
|
||
tail = &node->next;
|
||
pkt = xtrymalloc (sizeof *pkt);
|
||
if (!pkt)
|
||
{
|
||
err = gpg_error_from_syserror ();
|
||
break;
|
||
}
|
||
init_packet (pkt);
|
||
}
|
||
set_packet_list_mode (save_mode);
|
||
|
||
if (err == -1 && keyblock)
|
||
err = 0; /* Got the entire keyblock. */
|
||
|
||
if (!err && sigstatus && n_sigs != sigstatus[0])
|
||
{
|
||
log_error ("parse_keyblock_image: signature count does not match\n");
|
||
err = gpg_error (GPG_ERR_INV_KEYRING);
|
||
}
|
||
|
||
if (err)
|
||
release_kbnode (keyblock);
|
||
else
|
||
*r_keyblock = keyblock;
|
||
free_packet (pkt);
|
||
xfree (pkt);
|
||
return err;
|
||
}
|
||
|
||
|
||
/*
|
||
* Return the last found keyring. 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.
|
||
*/
|
||
gpg_error_t
|
||
keydb_get_keyblock (KEYDB_HANDLE hd, KBNODE *ret_kb)
|
||
{
|
||
gpg_error_t err = 0;
|
||
|
||
*ret_kb = NULL;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_ARG);
|
||
|
||
if (keyblock_cache.state == KEYBLOCK_CACHE_FILLED)
|
||
{
|
||
iobuf_seek (keyblock_cache.iobuf, 0);
|
||
err = parse_keyblock_image (keyblock_cache.iobuf,
|
||
keyblock_cache.pk_no,
|
||
keyblock_cache.uid_no,
|
||
keyblock_cache.sigstatus,
|
||
ret_kb);
|
||
if (err)
|
||
keyblock_cache_clear ();
|
||
return err;
|
||
}
|
||
|
||
if (hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_VALUE_NOT_FOUND);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
err = keyring_get_keyblock (hd->active[hd->found].u.kr, ret_kb);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
{
|
||
iobuf_t iobuf;
|
||
u32 *sigstatus;
|
||
int pk_no, uid_no;
|
||
|
||
err = keybox_get_keyblock (hd->active[hd->found].u.kb,
|
||
&iobuf, &pk_no, &uid_no, &sigstatus);
|
||
if (!err)
|
||
{
|
||
err = parse_keyblock_image (iobuf, pk_no, uid_no, sigstatus,
|
||
ret_kb);
|
||
if (!err && keyblock_cache.state == KEYBLOCK_CACHE_PREPARED)
|
||
{
|
||
keyblock_cache.state = KEYBLOCK_CACHE_FILLED;
|
||
keyblock_cache.sigstatus = sigstatus;
|
||
keyblock_cache.iobuf = iobuf;
|
||
keyblock_cache.pk_no = pk_no;
|
||
keyblock_cache.uid_no = uid_no;
|
||
}
|
||
else
|
||
{
|
||
xfree (sigstatus);
|
||
iobuf_close (iobuf);
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (keyblock_cache.state != KEYBLOCK_CACHE_FILLED)
|
||
keyblock_cache_clear ();
|
||
|
||
return err;
|
||
}
|
||
|
||
|
||
/* Build a keyblock image from KEYBLOCK. Returns 0 on success and
|
||
only then stores a new iobuf object at R_IOBUF and a signature
|
||
status vecotor at R_SIGSTATUS. */
|
||
static gpg_error_t
|
||
build_keyblock_image (kbnode_t keyblock, iobuf_t *r_iobuf, u32 **r_sigstatus)
|
||
{
|
||
gpg_error_t err;
|
||
iobuf_t iobuf;
|
||
kbnode_t kbctx, node;
|
||
u32 n_sigs;
|
||
u32 *sigstatus;
|
||
|
||
*r_iobuf = NULL;
|
||
if (r_sigstatus)
|
||
*r_sigstatus = NULL;
|
||
|
||
/* Allocate a vector for the signature cache. This is an array of
|
||
u32 values with the first value giving the number of elements to
|
||
follow and each element descriping the cache status of the
|
||
signature. */
|
||
if (r_sigstatus)
|
||
{
|
||
for (kbctx=NULL, n_sigs=0; (node = walk_kbnode (keyblock, &kbctx, 0));)
|
||
if (node->pkt->pkttype == PKT_SIGNATURE)
|
||
n_sigs++;
|
||
sigstatus = xtrycalloc (1+n_sigs, sizeof *sigstatus);
|
||
if (!sigstatus)
|
||
return gpg_error_from_syserror ();
|
||
}
|
||
else
|
||
sigstatus = NULL;
|
||
|
||
iobuf = iobuf_temp ();
|
||
for (kbctx = NULL, n_sigs = 0; (node = walk_kbnode (keyblock, &kbctx, 0));)
|
||
{
|
||
/* Make sure to use only packets valid on a keyblock. */
|
||
switch (node->pkt->pkttype)
|
||
{
|
||
case PKT_PUBLIC_KEY:
|
||
case PKT_PUBLIC_SUBKEY:
|
||
case PKT_SIGNATURE:
|
||
case PKT_USER_ID:
|
||
case PKT_ATTRIBUTE:
|
||
/* Note that we don't want the ring trust packets. They are
|
||
not useful. */
|
||
break;
|
||
default:
|
||
continue;
|
||
}
|
||
|
||
err = build_packet (iobuf, node->pkt);
|
||
if (err)
|
||
{
|
||
iobuf_close (iobuf);
|
||
return err;
|
||
}
|
||
|
||
/* Build signature status vector. */
|
||
if (node->pkt->pkttype == PKT_SIGNATURE)
|
||
{
|
||
PKT_signature *sig = node->pkt->pkt.signature;
|
||
|
||
n_sigs++;
|
||
/* Fixme: Detect the "missing key" status. */
|
||
if (sig->flags.checked && sigstatus)
|
||
{
|
||
if (sig->flags.valid)
|
||
{
|
||
if (!sig->expiredate)
|
||
sigstatus[n_sigs] = 0xffffffff;
|
||
else if (sig->expiredate < 0x1000000)
|
||
sigstatus[n_sigs] = 0x10000000;
|
||
else
|
||
sigstatus[n_sigs] = sig->expiredate;
|
||
}
|
||
else
|
||
sigstatus[n_sigs] = 0x00000002; /* Bad signature. */
|
||
}
|
||
}
|
||
}
|
||
if (sigstatus)
|
||
sigstatus[0] = n_sigs;
|
||
|
||
*r_iobuf = iobuf;
|
||
if (r_sigstatus)
|
||
*r_sigstatus = sigstatus;
|
||
return 0;
|
||
}
|
||
|
||
|
||
/*
|
||
* Update the current keyblock with the keyblock KB
|
||
*/
|
||
gpg_error_t
|
||
keydb_update_keyblock (KEYDB_HANDLE hd, kbnode_t kb)
|
||
{
|
||
gpg_error_t err;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_ARG);
|
||
|
||
keyblock_cache_clear ();
|
||
|
||
if (hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_VALUE_NOT_FOUND);
|
||
|
||
if (opt.dry_run)
|
||
return 0;
|
||
|
||
err = lock_all (hd);
|
||
if (err)
|
||
return err;
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
err = keyring_update_keyblock (hd->active[hd->found].u.kr, kb);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
{
|
||
iobuf_t iobuf;
|
||
|
||
err = build_keyblock_image (kb, &iobuf, NULL);
|
||
if (!err)
|
||
{
|
||
err = keybox_update_keyblock (hd->active[hd->found].u.kb,
|
||
iobuf_get_temp_buffer (iobuf),
|
||
iobuf_get_temp_length (iobuf));
|
||
iobuf_close (iobuf);
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return err;
|
||
}
|
||
|
||
|
||
/*
|
||
* Insert a new KB into one of the resources.
|
||
*/
|
||
gpg_error_t
|
||
keydb_insert_keyblock (KEYDB_HANDLE hd, kbnode_t kb)
|
||
{
|
||
gpg_error_t err;
|
||
int idx;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_ARG);
|
||
|
||
keyblock_cache_clear ();
|
||
|
||
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);
|
||
|
||
err = lock_all (hd);
|
||
if (err)
|
||
return err;
|
||
|
||
switch (hd->active[idx].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
err = keyring_insert_keyblock (hd->active[idx].u.kr, kb);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
{ /* We need to turn our kbnode_t list of packets into a proper
|
||
keyblock first. This is required by the OpenPGP key parser
|
||
included in the keybox code. Eventually we can change this
|
||
kludge to have the caller pass the image. */
|
||
iobuf_t iobuf;
|
||
u32 *sigstatus;
|
||
|
||
err = build_keyblock_image (kb, &iobuf, &sigstatus);
|
||
if (!err)
|
||
{
|
||
err = keybox_insert_keyblock (hd->active[idx].u.kb,
|
||
iobuf_get_temp_buffer (iobuf),
|
||
iobuf_get_temp_length (iobuf),
|
||
sigstatus);
|
||
xfree (sigstatus);
|
||
iobuf_close (iobuf);
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return err;
|
||
}
|
||
|
||
|
||
/*
|
||
* Delete the current keyblock.
|
||
*/
|
||
gpg_error_t
|
||
keydb_delete_keyblock (KEYDB_HANDLE hd)
|
||
{
|
||
gpg_error_t rc;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_ARG);
|
||
|
||
keyblock_cache_clear ();
|
||
|
||
if (hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_VALUE_NOT_FOUND);
|
||
|
||
if (opt.dry_run)
|
||
return 0;
|
||
|
||
rc = lock_all (hd);
|
||
if (rc)
|
||
return rc;
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
rc = keyring_delete_keyblock (hd->active[hd->found].u.kr);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_delete (hd->active[hd->found].u.kb);
|
||
break;
|
||
}
|
||
|
||
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.
|
||
*/
|
||
gpg_error_t
|
||
keydb_locate_writable (KEYDB_HANDLE hd, const char *reserved)
|
||
{
|
||
gpg_error_t rc;
|
||
|
||
(void)reserved;
|
||
|
||
if (!hd)
|
||
return GPG_ERR_INV_ARG;
|
||
|
||
rc = keydb_search_reset (hd); /* this does reset hd->current */
|
||
if (rc)
|
||
return rc;
|
||
|
||
/* If we have a primary set, try that one first */
|
||
if (primary_keyring)
|
||
{
|
||
for ( ; hd->current >= 0 && hd->current < hd->used; hd->current++)
|
||
{
|
||
if(hd->active[hd->current].token==primary_keyring)
|
||
{
|
||
if(keyring_is_writable (hd->active[hd->current].token))
|
||
return 0;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
|
||
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_KEYRING:
|
||
if (keyring_is_writable (hd->active[hd->current].token))
|
||
return 0; /* found (hd->current is set to it) */
|
||
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 gpg_error (GPG_ERR_NOT_FOUND);
|
||
}
|
||
|
||
/*
|
||
* Rebuild the caches of all key resources.
|
||
*/
|
||
void
|
||
keydb_rebuild_caches (int noisy)
|
||
{
|
||
int i, rc;
|
||
|
||
keyblock_cache_clear ();
|
||
|
||
for (i=0; i < used_resources; i++)
|
||
{
|
||
if (!keyring_is_writable (all_resources[i].token))
|
||
continue;
|
||
switch (all_resources[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYRING:
|
||
rc = keyring_rebuild_cache (all_resources[i].token,noisy);
|
||
if (rc)
|
||
log_error (_("failed to rebuild keyring cache: %s\n"),
|
||
gpg_strerror (rc));
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
/* N/A. */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Return the number of skipped blocks since the last search reset. */
|
||
unsigned long
|
||
keydb_get_skipped_counter (KEYDB_HANDLE hd)
|
||
{
|
||
return hd ? hd->skipped_long_blobs : 0;
|
||
}
|
||
|
||
|
||
/*
|
||
* Start the next search on this handle right at the beginning
|
||
*/
|
||
gpg_error_t
|
||
keydb_search_reset (KEYDB_HANDLE hd)
|
||
{
|
||
gpg_error_t rc = 0;
|
||
int i;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_ARG);
|
||
|
||
keyblock_cache_clear ();
|
||
|
||
if (DBG_CLOCK)
|
||
log_clock ("keydb_search_reset");
|
||
|
||
if (DBG_CACHE)
|
||
log_debug ("keydb_search: reset (hd=%p)", hd);
|
||
|
||
hd->skipped_long_blobs = 0;
|
||
hd->current = 0;
|
||
hd->found = -1;
|
||
/* Now 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_KEYRING:
|
||
rc = keyring_search_reset (hd->active[i].u.kr);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_search_reset (hd->active[i].u.kb);
|
||
break;
|
||
}
|
||
}
|
||
return rc;
|
||
}
|
||
|
||
|
||
static void
|
||
dump_search_desc (KEYDB_HANDLE hd, const char *text,
|
||
KEYDB_SEARCH_DESC *desc, size_t ndesc)
|
||
{
|
||
int n;
|
||
const char *s;
|
||
|
||
for (n=0; n < ndesc; n++)
|
||
{
|
||
switch (desc[n].mode)
|
||
{
|
||
case KEYDB_SEARCH_MODE_NONE: s = "none"; break;
|
||
case KEYDB_SEARCH_MODE_EXACT: s = "exact"; break;
|
||
case KEYDB_SEARCH_MODE_SUBSTR: s = "substr"; break;
|
||
case KEYDB_SEARCH_MODE_MAIL: s = "mail"; break;
|
||
case KEYDB_SEARCH_MODE_MAILSUB: s = "mailsub"; break;
|
||
case KEYDB_SEARCH_MODE_MAILEND: s = "mailend"; break;
|
||
case KEYDB_SEARCH_MODE_WORDS: s = "words"; break;
|
||
case KEYDB_SEARCH_MODE_SHORT_KID: s = "short_kid"; break;
|
||
case KEYDB_SEARCH_MODE_LONG_KID: s = "long_kid"; break;
|
||
case KEYDB_SEARCH_MODE_FPR16: s = "fpr16"; break;
|
||
case KEYDB_SEARCH_MODE_FPR20: s = "fpr20"; break;
|
||
case KEYDB_SEARCH_MODE_FPR: s = "fpr"; break;
|
||
case KEYDB_SEARCH_MODE_ISSUER: s = "issuer"; break;
|
||
case KEYDB_SEARCH_MODE_ISSUER_SN: s = "issuer_sn"; break;
|
||
case KEYDB_SEARCH_MODE_SN: s = "sn"; break;
|
||
case KEYDB_SEARCH_MODE_SUBJECT: s = "subject"; break;
|
||
case KEYDB_SEARCH_MODE_KEYGRIP: s = "keygrip"; break;
|
||
case KEYDB_SEARCH_MODE_FIRST: s = "first"; break;
|
||
case KEYDB_SEARCH_MODE_NEXT: s = "next"; break;
|
||
default: s = "?"; break;
|
||
}
|
||
if (!n)
|
||
log_debug ("%s: mode=%s (hd=%p)", text, s, hd);
|
||
else
|
||
log_debug ("%*s mode=%s", (int)strlen (text), "", s);
|
||
if (desc[n].mode == KEYDB_SEARCH_MODE_LONG_KID)
|
||
log_printf (" %08lX%08lX", (unsigned long)desc[n].u.kid[0],
|
||
(unsigned long)desc[n].u.kid[1]);
|
||
else if (desc[n].mode == KEYDB_SEARCH_MODE_SHORT_KID)
|
||
log_printf (" %08lX", (unsigned long)desc[n].u.kid[1]);
|
||
else if (desc[n].mode == KEYDB_SEARCH_MODE_SUBSTR)
|
||
log_printf (" '%s'", desc[n].u.name);
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
* Search through all keydb resources, starting at the current
|
||
* position, for a keyblock which contains one of the keys described
|
||
* in the DESC array. Returns GPG_ERR_NOT_FOUND if no matching
|
||
* keyring was found.
|
||
*/
|
||
gpg_error_t
|
||
keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
|
||
size_t ndesc, size_t *descindex)
|
||
{
|
||
gpg_error_t rc;
|
||
|
||
if (descindex)
|
||
*descindex = 0; /* Make sure it is always set on return. */
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_ARG);
|
||
|
||
if (DBG_CLOCK)
|
||
log_clock ("keydb_search enter");
|
||
|
||
if (DBG_CACHE)
|
||
dump_search_desc (hd, "keydb_search", desc, ndesc);
|
||
|
||
/* NB: If one of the exact search modes below is used in a loop to
|
||
walk over all keys (with the same fingerprint) the caching must
|
||
have been disabled for the handle. */
|
||
if (!hd->no_caching
|
||
&& ndesc == 1
|
||
&& (desc[0].mode == KEYDB_SEARCH_MODE_FPR20
|
||
|| desc[0].mode == KEYDB_SEARCH_MODE_FPR)
|
||
&& keyblock_cache.state == KEYBLOCK_CACHE_FILLED
|
||
&& !memcmp (keyblock_cache.fpr, desc[0].u.fpr, 20))
|
||
{
|
||
/* (DESCINDEX is already set). */
|
||
if (DBG_CLOCK)
|
||
log_clock ("keydb_search leave (cached)");
|
||
return 0;
|
||
}
|
||
|
||
rc = -1;
|
||
while ((rc == -1 || gpg_err_code (rc) == GPG_ERR_EOF)
|
||
&& 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_KEYRING:
|
||
rc = keyring_search (hd->active[hd->current].u.kr, desc,
|
||
ndesc, descindex);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_search (hd->active[hd->current].u.kb, desc,
|
||
ndesc, KEYBOX_BLOBTYPE_PGP,
|
||
descindex, &hd->skipped_long_blobs);
|
||
break;
|
||
}
|
||
if (rc == -1 || gpg_err_code (rc) == GPG_ERR_EOF)
|
||
{
|
||
/* EOF -> switch to next resource */
|
||
hd->current++;
|
||
}
|
||
else if (!rc)
|
||
hd->found = hd->current;
|
||
}
|
||
|
||
rc = ((rc == -1 || gpg_err_code (rc) == GPG_ERR_EOF)
|
||
? gpg_error (GPG_ERR_NOT_FOUND)
|
||
: rc);
|
||
|
||
keyblock_cache_clear ();
|
||
if (!hd->no_caching
|
||
&& !rc
|
||
&& ndesc == 1 && (desc[0].mode == KEYDB_SEARCH_MODE_FPR20
|
||
|| desc[0].mode == KEYDB_SEARCH_MODE_FPR))
|
||
{
|
||
keyblock_cache.state = KEYBLOCK_CACHE_PREPARED;
|
||
memcpy (keyblock_cache.fpr, desc[0].u.fpr, 20);
|
||
}
|
||
|
||
if (DBG_CLOCK)
|
||
log_clock (rc? "keydb_search leave (not found)"
|
||
: "keydb_search leave (found)");
|
||
return rc;
|
||
}
|
||
|
||
|
||
/* Note that in contrast to using keydb_search in search first mode,
|
||
this function skips legacy keys. */
|
||
gpg_error_t
|
||
keydb_search_first (KEYDB_HANDLE hd)
|
||
{
|
||
gpg_error_t err;
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_FIRST;
|
||
err = keydb_search (hd, &desc, 1, NULL);
|
||
if (gpg_err_code (err) == GPG_ERR_LEGACY_KEY)
|
||
err = keydb_search_next (hd);
|
||
return err;
|
||
}
|
||
|
||
|
||
/* Note that in contrast to using keydb_search in search next mode,
|
||
this fucntion skips legacy keys. */
|
||
gpg_error_t
|
||
keydb_search_next (KEYDB_HANDLE hd)
|
||
{
|
||
gpg_error_t err;
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
do
|
||
{
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_NEXT;
|
||
err = keydb_search (hd, &desc, 1, NULL);
|
||
}
|
||
while (gpg_err_code (err) == GPG_ERR_LEGACY_KEY);
|
||
|
||
return err;
|
||
}
|
||
|
||
gpg_error_t
|
||
keydb_search_kid (KEYDB_HANDLE hd, u32 *kid)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
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, NULL);
|
||
}
|
||
|
||
gpg_error_t
|
||
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, MAX_FINGERPRINT_LEN);
|
||
return keydb_search (hd, &desc, 1, NULL);
|
||
}
|