mirror of
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bdd22e3a08
* g10/keydb.c (keydb_add_resource): Allow forward slash under Windows. -- GnuPG-bug-id: 1546
1567 lines
42 KiB
C
1567 lines
42 KiB
C
/* keydb.c - key database dispatcher
|
||
* Copyright (C) 2001, 2002, 2003, 2004, 2005,
|
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* 2008, 2009, 2011, 2013 Free Software Foundation, Inc.
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* Coyrright (C) 2013 Werner Koch
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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
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* it under the terms of the GNU General Public License as published by
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||
* the Free Software Foundation; either version 3 of the License, or
|
||
* (at your option) any later version.
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||
*
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||
* 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>
|
||
#include <sys/stat.h>
|
||
#include <unistd.h>
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||
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||
#include "gpg.h"
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||
#include "util.h"
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||
#include "options.h"
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||
#include "main.h" /*try_make_homedir ()*/
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||
#include "packet.h"
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||
#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"
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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_KEYRING,
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||
KEYDB_RESOURCE_TYPE_KEYBOX
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} KeydbResourceType;
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#define MAX_KEYDB_RESOURCES 40
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||
|
||
struct resource_item
|
||
{
|
||
KeydbResourceType type;
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||
union {
|
||
KEYRING_HANDLE kr;
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||
KEYBOX_HANDLE kb;
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||
} u;
|
||
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;
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||
unsigned long skipped_long_blobs;
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||
int no_caching;
|
||
int current;
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||
int used; /* Number of items in ACTIVE. */
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struct resource_item active[MAX_KEYDB_RESOURCES];
|
||
};
|
||
|
||
|
||
/* This is a simple cache used to return the last result of a
|
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successful fingerprint search. This works only for keybox resources
|
||
because (due to lack of a copy_keyblock function) we need to store
|
||
an image of the keyblock which is fortunately instantly available
|
||
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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||
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struct {
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enum keyblock_cache_states state;
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||
byte fpr[MAX_FINGERPRINT_LEN];
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iobuf_t iobuf; /* Image of the keyblock. */
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u32 *sigstatus;
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int pk_no;
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int uid_no;
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||
} keyblock_cache;
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||
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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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static void
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keyblock_cache_clear (void)
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{
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keyblock_cache.state = KEYBLOCK_CACHE_EMPTY;
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xfree (keyblock_cache.sigstatus);
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keyblock_cache.sigstatus = NULL;
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||
iobuf_close (keyblock_cache.iobuf);
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keyblock_cache.iobuf = NULL;
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}
|
||
|
||
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/* Handle the creation of a keyring or a keybox if it does not yet
|
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exist. Take into account that other processes might have the
|
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keyring/keybox already locked. This lock check does not work if
|
||
the directory itself is not yet available. If is IS_BOX is true
|
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the filename is expected to be a keybox. If FORCE_CREATE is true
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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)
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{
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dotlock_t lockhd = NULL;
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IOBUF iobuf;
|
||
int rc;
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mode_t oldmask;
|
||
char *last_slash_in_filename;
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int save_slash;
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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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/* 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
|
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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
|
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tricky auto-creation which is anyway only done for certain home
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directory name pattern. */
|
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last_slash_in_filename = strrchr (filename, DIRSEP_C);
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#if HAVE_W32_SYSTEM
|
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{
|
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/* 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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}
|
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#endif /*HAVE_W32_SYSTEM*/
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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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||
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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 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;
|
||
}
|
||
}
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||
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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;
|
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}
|
||
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||
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||
/* Helper for keydb_add_resource. Opens FILENAME to figures out the
|
||
resource type. Returns the resource type and a flag at R_NOTFOUND
|
||
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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{
|
||
u32 magic;
|
||
unsigned char verbuf[4];
|
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FILE *fp;
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KeydbResourceType rt = KEYDB_RESOURCE_TYPE_NONE;
|
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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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|
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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
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&& !memcmp (&magic, "KBXf", 4))
|
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{
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||
if ((verbuf[3] & 0x02))
|
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*r_openpgp = 1;
|
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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}
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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
|
||
#ifdef HAVE_W32_SYSTEM
|
||
&& *resname != '/' /* Fixme: does not handle drive letters. */
|
||
#endif
|
||
)
|
||
{
|
||
/* Do tilde expansion etc. */
|
||
if (strchr (resname, DIRSEP_C)
|
||
#ifdef HAVE_W32_SYSTEM
|
||
|| strchr (resname, '/') /* Windows also accepts this. */
|
||
#endif
|
||
)
|
||
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);
|
||
}
|