mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-22 10:19:57 +01:00
1510 lines
36 KiB
C
1510 lines
36 KiB
C
/* keydb.c - key database dispatcher
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* Copyright (C) 2001, 2003, 2004 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* 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
|
||
* the Free Software Foundation; either version 2 of the License, or
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||
* (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,
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||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
|
||
* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "gpgsm.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_KEYBOX
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} KeydbResourceType;
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#define MAX_KEYDB_RESOURCES 20
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struct resource_item {
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KeydbResourceType type;
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union {
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KEYBOX_HANDLE kr;
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} u;
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void *token;
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int secret;
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DOTLOCK lockhandle;
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};
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static struct resource_item all_resources[MAX_KEYDB_RESOURCES];
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static int used_resources;
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struct keydb_handle {
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int locked;
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int found;
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int current;
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int is_ephemeral;
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int used; /* items in active */
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struct resource_item active[MAX_KEYDB_RESOURCES];
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};
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static int lock_all (KEYDB_HANDLE hd);
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static void unlock_all (KEYDB_HANDLE hd);
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/*
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* Register a resource (which currently may only be a keybox file).
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* The first keybox which is added by this function is
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* created if it does not exist.
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* Note: this function may be called before secure memory is
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* available.
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*/
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int
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keydb_add_resource (const char *url, int force, int secret)
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{
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static int any_secret, any_public;
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const char *resname = url;
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char *filename = NULL;
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int rc = 0;
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FILE *fp;
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KeydbResourceType rt = KEYDB_RESOURCE_TYPE_NONE;
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const char *created_fname = NULL;
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/* Do we have an URL?
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gnupg-kbx:filename := this is a plain keybox
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filename := See what is is, but create as plain keybox.
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*/
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if (strlen (resname) > 10)
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{
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if (!strncmp (resname, "gnupg-kbx:", 10) )
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{
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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resname += 10;
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}
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#if !defined(HAVE_DRIVE_LETTERS) && !defined(__riscos__)
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else if (strchr (resname, ':'))
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{
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log_error ("invalid key resource URL `%s'\n", url );
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rc = gpg_error (GPG_ERR_GENERAL);
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goto leave;
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}
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#endif /* !HAVE_DRIVE_LETTERS && !__riscos__ */
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}
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if (*resname != DIRSEP_C )
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{ /* do tilde expansion etc */
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if (strchr(resname, DIRSEP_C) )
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filename = make_filename (resname, NULL);
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else
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filename = make_filename (opt.homedir, resname, NULL);
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}
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else
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filename = xstrdup (resname);
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if (!force)
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force = secret? !any_secret : !any_public;
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/* see whether we can determine the filetype */
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if (rt == KEYDB_RESOURCE_TYPE_NONE)
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{
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FILE *fp2 = fopen( filename, "rb" );
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if (fp2) {
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u32 magic;
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/* FIXME: check for the keybox magic */
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if (fread( &magic, 4, 1, fp2) == 1 )
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{
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if (magic == 0x13579ace || magic == 0xce9a5713)
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; /* GDBM magic - no more support */
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else
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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}
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else /* maybe empty: assume ring */
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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fclose (fp2);
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}
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else /* no file yet: create ring */
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rt = KEYDB_RESOURCE_TYPE_KEYBOX;
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}
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switch (rt)
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{
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case KEYDB_RESOURCE_TYPE_NONE:
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log_error ("unknown type of key resource `%s'\n", url );
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rc = gpg_error (GPG_ERR_GENERAL);
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goto leave;
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case KEYDB_RESOURCE_TYPE_KEYBOX:
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fp = fopen (filename, "rb");
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if (!fp && !force)
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{
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rc = gpg_error (gpg_err_code_from_errno (errno));
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goto leave;
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}
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if (!fp)
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{ /* no file */
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#if 0 /* no autocreate of the homedirectory yet */
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{
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char *last_slash_in_filename;
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last_slash_in_filename = strrchr (filename, DIRSEP_C);
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*last_slash_in_filename = 0;
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if (access (filename, F_OK))
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{ /* on the first time we try to create the default
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homedir and in this case the process will be
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terminated, so that on the next invocation can
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read the options file in on startup */
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try_make_homedir (filename);
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rc = gpg_error (GPG_ERR_FILE_OPEN_ERROR);
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*last_slash_in_filename = DIRSEP_C;
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goto leave;
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}
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*last_slash_in_filename = DIRSEP_C;
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}
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#endif
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fp = fopen (filename, "w");
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if (!fp)
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{
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rc = gpg_error (gpg_err_code_from_errno (errno));
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log_error (_("error creating keybox `%s': %s\n"),
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filename, strerror(errno));
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if (errno == ENOENT)
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log_info (_("you may want to start the gpg-agent first\n"));
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goto leave;
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}
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if (!opt.quiet)
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log_info (_("keybox `%s' created\n"), filename);
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created_fname = filename;
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}
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fclose (fp);
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fp = NULL;
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/* now register the file */
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{
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void *token = keybox_register_file (filename, secret);
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if (!token)
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; /* already registered - ignore it */
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else if (used_resources >= MAX_KEYDB_RESOURCES)
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rc = gpg_error (GPG_ERR_RESOURCE_LIMIT);
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else
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{
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all_resources[used_resources].type = rt;
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all_resources[used_resources].u.kr = NULL; /* Not used here */
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all_resources[used_resources].token = token;
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all_resources[used_resources].secret = secret;
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all_resources[used_resources].lockhandle
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= create_dotlock (filename);
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if (!all_resources[used_resources].lockhandle)
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log_fatal ( _("can't create lock for `%s'\n"), filename);
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/* Do a compress run if needed and the file is not locked. */
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if (!make_dotlock (all_resources[used_resources].lockhandle, 0))
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{
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KEYBOX_HANDLE kbxhd = keybox_new (token, secret);
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if (kbxhd)
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{
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keybox_compress (kbxhd);
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keybox_release (kbxhd);
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}
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release_dotlock (all_resources[used_resources].lockhandle);
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}
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used_resources++;
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}
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}
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break;
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default:
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log_error ("resource type of `%s' not supported\n", url);
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rc = gpg_error (GPG_ERR_NOT_SUPPORTED);
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goto leave;
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}
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/* fixme: check directory permissions and print a warning */
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leave:
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if (rc)
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log_error ("keyblock resource `%s': %s\n", filename, gpg_strerror(rc));
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else if (secret)
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any_secret = 1;
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else
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any_public = 1;
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xfree (filename);
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return rc;
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}
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KEYDB_HANDLE
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keydb_new (int secret)
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{
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KEYDB_HANDLE hd;
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int i, j;
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hd = xcalloc (1, sizeof *hd);
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hd->found = -1;
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assert (used_resources <= MAX_KEYDB_RESOURCES);
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for (i=j=0; i < used_resources; i++)
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{
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if (!all_resources[i].secret != !secret)
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continue;
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switch (all_resources[i].type)
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{
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case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
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break;
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case KEYDB_RESOURCE_TYPE_KEYBOX:
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hd->active[j].type = all_resources[i].type;
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hd->active[j].token = all_resources[i].token;
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hd->active[j].secret = all_resources[i].secret;
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hd->active[j].lockhandle = all_resources[i].lockhandle;
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hd->active[j].u.kr = keybox_new (all_resources[i].token, secret);
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if (!hd->active[j].u.kr)
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{
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xfree (hd);
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return NULL; /* fixme: release all previously allocated handles*/
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}
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j++;
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break;
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}
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}
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hd->used = j;
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active_handles++;
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return hd;
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}
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void
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keydb_release (KEYDB_HANDLE hd)
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{
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int i;
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if (!hd)
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return;
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assert (active_handles > 0);
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active_handles--;
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unlock_all (hd);
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for (i=0; i < hd->used; i++)
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{
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switch (hd->active[i].type)
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{
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case KEYDB_RESOURCE_TYPE_NONE:
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break;
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case KEYDB_RESOURCE_TYPE_KEYBOX:
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keybox_release (hd->active[i].u.kr);
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break;
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}
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}
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xfree (hd);
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}
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/* Return the name of the current resource. This is function first
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looks for the last found found, then for the current search
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position, and last returns the first available resource. The
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returned string is only valid as long as the handle exists. This
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function does only return NULL if no handle is specified, in all
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other error cases an empty string is returned. */
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const char *
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keydb_get_resource_name (KEYDB_HANDLE hd)
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{
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int idx;
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const char *s = NULL;
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if (!hd)
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return NULL;
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if ( hd->found >= 0 && hd->found < hd->used)
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idx = hd->found;
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else if ( hd->current >= 0 && hd->current < hd->used)
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idx = hd->current;
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else
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idx = 0;
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switch (hd->active[idx].type)
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{
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case KEYDB_RESOURCE_TYPE_NONE:
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s = NULL;
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break;
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case KEYDB_RESOURCE_TYPE_KEYBOX:
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s = keybox_get_resource_name (hd->active[idx].u.kr);
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break;
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}
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return s? s: "";
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}
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/* Switch the handle into ephemeral mode and return the orginal value. */
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int
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keydb_set_ephemeral (KEYDB_HANDLE hd, int yes)
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{
|
||
int i;
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||
|
||
if (!hd)
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return 0;
|
||
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yes = !!yes;
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if (hd->is_ephemeral != yes)
|
||
{
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||
for (i=0; i < hd->used; i++)
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{
|
||
switch (hd->active[i].type)
|
||
{
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case KEYDB_RESOURCE_TYPE_NONE:
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||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
keybox_set_ephemeral (hd->active[i].u.kr, yes);
|
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break;
|
||
}
|
||
}
|
||
}
|
||
|
||
i = hd->is_ephemeral;
|
||
hd->is_ephemeral = yes;
|
||
return i;
|
||
}
|
||
|
||
|
||
/* If the keyring has not yet been locked, lock it now. This
|
||
operation is required before any update opeations; it is optionaly
|
||
for an insert operation. The lock is released with
|
||
keydb_released. */
|
||
gpg_error_t
|
||
keydb_lock (KEYDB_HANDLE hd)
|
||
{
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_HANDLE);
|
||
if (hd->locked)
|
||
return 0; /* Already locked. */
|
||
return lock_all (hd);
|
||
}
|
||
|
||
|
||
|
||
static int
|
||
lock_all (KEYDB_HANDLE hd)
|
||
{
|
||
int i, rc = 0;
|
||
|
||
/* Fixme: This locking scheme may lead to deadlock if the resources
|
||
are not added in the same order by all processes. We are
|
||
currently only allowing one resource so it is not a problem. */
|
||
for (i=0; i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (hd->active[i].lockhandle)
|
||
rc = make_dotlock (hd->active[i].lockhandle, -1);
|
||
break;
|
||
}
|
||
if (rc)
|
||
break;
|
||
}
|
||
|
||
if (rc)
|
||
{
|
||
/* revert the already set locks */
|
||
for (i--; i >= 0; i--)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (hd->active[i].lockhandle)
|
||
release_dotlock (hd->active[i].lockhandle);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
hd->locked = 1;
|
||
|
||
/* make_dotlock () does not yet guarantee that errno is set, thus
|
||
we can't rely on the error reason and will simply use
|
||
EACCES. */
|
||
return rc? gpg_error (GPG_ERR_EACCES) : 0;
|
||
}
|
||
|
||
static void
|
||
unlock_all (KEYDB_HANDLE hd)
|
||
{
|
||
int i;
|
||
|
||
if (!hd->locked)
|
||
return;
|
||
|
||
for (i=hd->used-1; i >= 0; i--)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (hd->active[i].lockhandle)
|
||
release_dotlock (hd->active[i].lockhandle);
|
||
break;
|
||
}
|
||
}
|
||
hd->locked = 0;
|
||
}
|
||
|
||
|
||
#if 0
|
||
/*
|
||
* Return the last found keybox. Caller must free it.
|
||
* The returned keyblock has the kbode flag bit 0 set for the node with
|
||
* the public key used to locate the keyblock or flag bit 1 set for
|
||
* the user ID node.
|
||
*/
|
||
int
|
||
keydb_get_keyblock (KEYDB_HANDLE hd, KBNODE *ret_kb)
|
||
{
|
||
int rc = 0;
|
||
|
||
if (!hd)
|
||
return G10ERR_INV_ARG;
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
switch (hd->active[hd->found].type) {
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = G10ERR_GENERAL; /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_get_keyblock (hd->active[hd->found].u.kr, ret_kb);
|
||
break;
|
||
}
|
||
|
||
return rc;
|
||
}
|
||
|
||
/*
|
||
* update the current keyblock with KB
|
||
*/
|
||
int
|
||
keydb_update_keyblock (KEYDB_HANDLE hd, KBNODE kb)
|
||
{
|
||
int rc = 0;
|
||
|
||
if (!hd)
|
||
return G10ERR_INV_ARG;
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
if( opt.dry_run )
|
||
return 0;
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
switch (hd->active[hd->found].type) {
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = G10ERR_GENERAL; /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_update_keyblock (hd->active[hd->found].u.kr, kb);
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
/*
|
||
* Insert a new KB into one of the resources.
|
||
*/
|
||
int
|
||
keydb_insert_keyblock (KEYDB_HANDLE hd, KBNODE kb)
|
||
{
|
||
int rc = -1;
|
||
int idx;
|
||
|
||
if (!hd)
|
||
return G10ERR_INV_ARG;
|
||
|
||
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 G10ERR_GENERAL;
|
||
|
||
rc = lock_all (hd);
|
||
if (rc)
|
||
return rc;
|
||
|
||
switch (hd->active[idx].type) {
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = G10ERR_GENERAL; /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_insert_keyblock (hd->active[idx].u.kr, kb);
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
#endif /*disabled code*/
|
||
|
||
|
||
|
||
/*
|
||
Return the last found object. Caller must free it. The returned
|
||
keyblock has the kbode flag bit 0 set for the node with the public
|
||
key used to locate the keyblock or flag bit 1 set for the user ID
|
||
node. */
|
||
int
|
||
keydb_get_cert (KEYDB_HANDLE hd, ksba_cert_t *r_cert)
|
||
{
|
||
int rc = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_get_cert (hd->active[hd->found].u.kr, r_cert);
|
||
break;
|
||
}
|
||
|
||
return rc;
|
||
}
|
||
|
||
/* Return a flag of the last found object. WHICH is the flag requested;
|
||
it should be one of the KEYBOX_FLAG_ values. If the operation is
|
||
successful, the flag value will be stored at the address given by
|
||
VALUE. Return 0 on success or an error code. */
|
||
gpg_error_t
|
||
keydb_get_flags (KEYDB_HANDLE hd, int which, int idx, unsigned int *value)
|
||
{
|
||
int err = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_NOTHING_FOUND);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
err = keybox_get_flags (hd->active[hd->found].u.kr, which, idx, value);
|
||
break;
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
/* Set a flag of the last found object. WHICH is the flag to be set; it
|
||
should be one of the KEYBOX_FLAG_ values. If the operation is
|
||
successful, the flag value will be stored in the keybox. Note,
|
||
that some flag values can't be updated and thus may return an
|
||
error, some other flag values may be masked out before an update.
|
||
Returns 0 on success or an error code. */
|
||
gpg_error_t
|
||
keydb_set_flags (KEYDB_HANDLE hd, int which, int idx, unsigned int value)
|
||
{
|
||
int err = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return gpg_error (GPG_ERR_NOTHING_FOUND);
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
err = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
err = keybox_set_flags (hd->active[hd->found].u.kr, which, idx, value);
|
||
break;
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
/*
|
||
* Insert a new Certificate into one of the resources.
|
||
*/
|
||
int
|
||
keydb_insert_cert (KEYDB_HANDLE hd, ksba_cert_t cert)
|
||
{
|
||
int rc = -1;
|
||
int idx;
|
||
unsigned char digest[20];
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if (opt.dry_run)
|
||
return 0;
|
||
|
||
if ( hd->found >= 0 && hd->found < hd->used)
|
||
idx = hd->found;
|
||
else if ( hd->current >= 0 && hd->current < hd->used)
|
||
idx = hd->current;
|
||
else
|
||
return gpg_error (GPG_ERR_GENERAL);
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
gpgsm_get_fingerprint (cert, GCRY_MD_SHA1, digest, NULL); /* kludge*/
|
||
|
||
switch (hd->active[idx].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_insert_cert (hd->active[idx].u.kr, cert, digest);
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
/* update the current keyblock with KB */
|
||
int
|
||
keydb_update_cert (KEYDB_HANDLE hd, ksba_cert_t cert)
|
||
{
|
||
int rc = 0;
|
||
unsigned char digest[20];
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
if (opt.dry_run)
|
||
return 0;
|
||
|
||
rc = lock_all (hd);
|
||
if (rc)
|
||
return rc;
|
||
|
||
gpgsm_get_fingerprint (cert, GCRY_MD_SHA1, digest, NULL); /* kludge*/
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL); /* oops */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_update_cert (hd->active[hd->found].u.kr, cert, digest);
|
||
break;
|
||
}
|
||
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
/*
|
||
* The current keyblock or cert will be deleted.
|
||
*/
|
||
int
|
||
keydb_delete (KEYDB_HANDLE hd, int unlock)
|
||
{
|
||
int rc = -1;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
if ( hd->found < 0 || hd->found >= hd->used)
|
||
return -1; /* nothing found */
|
||
|
||
if( opt.dry_run )
|
||
return 0;
|
||
|
||
if (!hd->locked)
|
||
return gpg_error (GPG_ERR_NOT_LOCKED);
|
||
|
||
switch (hd->active[hd->found].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
rc = gpg_error (GPG_ERR_GENERAL);
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_delete (hd->active[hd->found].u.kr);
|
||
break;
|
||
}
|
||
|
||
if (unlock)
|
||
unlock_all (hd);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
* Locate the default writable key resource, so that the next
|
||
* operation (which is only relevant for inserts) will be done on this
|
||
* resource.
|
||
*/
|
||
int
|
||
keydb_locate_writable (KEYDB_HANDLE hd, const char *reserved)
|
||
{
|
||
int rc;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
rc = keydb_search_reset (hd); /* this does reset hd->current */
|
||
if (rc)
|
||
return rc;
|
||
|
||
for ( ; hd->current >= 0 && hd->current < hd->used; hd->current++)
|
||
{
|
||
switch (hd->active[hd->current].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
BUG();
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
if (keybox_is_writable (hd->active[hd->current].token))
|
||
return 0; /* found (hd->current is set to it) */
|
||
break;
|
||
}
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
* Rebuild the caches of all key resources.
|
||
*/
|
||
void
|
||
keydb_rebuild_caches (void)
|
||
{
|
||
int i;
|
||
|
||
for (i=0; i < used_resources; i++)
|
||
{
|
||
if (all_resources[i].secret)
|
||
continue;
|
||
switch (all_resources[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
/* rc = keybox_rebuild_cache (all_resources[i].token); */
|
||
/* if (rc) */
|
||
/* log_error (_("failed to rebuild keybox cache: %s\n"), */
|
||
/* g10_errstr (rc)); */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
* Start the next search on this handle right at the beginning
|
||
*/
|
||
int
|
||
keydb_search_reset (KEYDB_HANDLE hd)
|
||
{
|
||
int i, rc = 0;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
hd->current = 0;
|
||
hd->found = -1;
|
||
/* and reset all resources */
|
||
for (i=0; !rc && i < hd->used; i++)
|
||
{
|
||
switch (hd->active[i].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_search_reset (hd->active[i].u.kr);
|
||
break;
|
||
}
|
||
}
|
||
return rc; /* fixme: we need to map error codes or share them with
|
||
all modules*/
|
||
}
|
||
|
||
/*
|
||
* Search through all keydb resources, starting at the current position,
|
||
* for a keyblock which contains one of the keys described in the DESC array.
|
||
*/
|
||
int
|
||
keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc, size_t ndesc)
|
||
{
|
||
int rc = -1;
|
||
|
||
if (!hd)
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
|
||
while (rc == -1 && hd->current >= 0 && hd->current < hd->used)
|
||
{
|
||
switch (hd->active[hd->current].type)
|
||
{
|
||
case KEYDB_RESOURCE_TYPE_NONE:
|
||
BUG(); /* we should never see it here */
|
||
break;
|
||
case KEYDB_RESOURCE_TYPE_KEYBOX:
|
||
rc = keybox_search (hd->active[hd->current].u.kr, desc, ndesc);
|
||
break;
|
||
}
|
||
if (rc == -1) /* EOF -> switch to next resource */
|
||
hd->current++;
|
||
else if (!rc)
|
||
hd->found = hd->current;
|
||
}
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
int
|
||
keydb_search_first (KEYDB_HANDLE hd)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_FIRST;
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_next (KEYDB_HANDLE hd)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_NEXT;
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_kid (KEYDB_HANDLE hd, u32 *kid)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_LONG_KID;
|
||
/* desc.u.kid[0] = kid[0]; */
|
||
/* desc.u.kid[1] = kid[1]; */
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_fpr (KEYDB_HANDLE hd, const byte *fpr)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_FPR;
|
||
memcpy (desc.u.fpr, fpr, 20);
|
||
return keydb_search (hd, &desc, 1);
|
||
}
|
||
|
||
int
|
||
keydb_search_issuer (KEYDB_HANDLE hd, const char *issuer)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
int rc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_ISSUER;
|
||
desc.u.name = issuer;
|
||
rc = keydb_search (hd, &desc, 1);
|
||
return rc;
|
||
}
|
||
|
||
int
|
||
keydb_search_issuer_sn (KEYDB_HANDLE hd,
|
||
const char *issuer, ksba_const_sexp_t serial)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
int rc;
|
||
const unsigned char *s;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_ISSUER_SN;
|
||
s = serial;
|
||
if (*s !='(')
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
s++;
|
||
for (desc.snlen = 0; digitp (s); s++)
|
||
desc.snlen = 10*desc.snlen + atoi_1 (s);
|
||
if (*s !=':')
|
||
return gpg_error (GPG_ERR_INV_VALUE);
|
||
desc.sn = s+1;
|
||
desc.u.name = issuer;
|
||
rc = keydb_search (hd, &desc, 1);
|
||
return rc;
|
||
}
|
||
|
||
int
|
||
keydb_search_subject (KEYDB_HANDLE hd, const char *name)
|
||
{
|
||
KEYDB_SEARCH_DESC desc;
|
||
int rc;
|
||
|
||
memset (&desc, 0, sizeof desc);
|
||
desc.mode = KEYDB_SEARCH_MODE_SUBJECT;
|
||
desc.u.name = name;
|
||
rc = keydb_search (hd, &desc, 1);
|
||
return rc;
|
||
}
|
||
|
||
|
||
static int
|
||
classify_user_id (const char *name,
|
||
KEYDB_SEARCH_DESC *desc,
|
||
int *force_exact )
|
||
{
|
||
const char *s;
|
||
int hexprefix = 0;
|
||
int hexlength;
|
||
int mode = 0;
|
||
|
||
/* clear the structure so that the mode field is set to zero unless
|
||
* we set it to the correct value right at the end of this function */
|
||
memset (desc, 0, sizeof *desc);
|
||
*force_exact = 0;
|
||
/* Skip leading spaces. Fixme: what about trailing white space? */
|
||
for(s = name; *s && spacep (s); s++ )
|
||
;
|
||
|
||
switch (*s)
|
||
{
|
||
case 0: /* empty string is an error */
|
||
return 0;
|
||
|
||
case '.': /* an email address, compare from end */
|
||
mode = KEYDB_SEARCH_MODE_MAILEND;
|
||
s++;
|
||
desc->u.name = s;
|
||
break;
|
||
|
||
case '<': /* an email address */
|
||
mode = KEYDB_SEARCH_MODE_MAIL;
|
||
s++;
|
||
desc->u.name = s;
|
||
break;
|
||
|
||
case '@': /* part of an email address */
|
||
mode = KEYDB_SEARCH_MODE_MAILSUB;
|
||
s++;
|
||
desc->u.name = s;
|
||
break;
|
||
|
||
case '=': /* exact compare */
|
||
mode = KEYDB_SEARCH_MODE_EXACT;
|
||
s++;
|
||
desc->u.name = s;
|
||
break;
|
||
|
||
case '*': /* case insensitive substring search */
|
||
mode = KEYDB_SEARCH_MODE_SUBSTR;
|
||
s++;
|
||
desc->u.name = s;
|
||
break;
|
||
|
||
case '+': /* compare individual words */
|
||
mode = KEYDB_SEARCH_MODE_WORDS;
|
||
s++;
|
||
desc->u.name = s;
|
||
break;
|
||
|
||
case '/': /* subject's DN */
|
||
s++;
|
||
if (!*s || spacep (s))
|
||
return 0; /* no DN or prefixed with a space */
|
||
desc->u.name = s;
|
||
mode = KEYDB_SEARCH_MODE_SUBJECT;
|
||
break;
|
||
|
||
case '#':
|
||
{
|
||
const char *si;
|
||
|
||
s++;
|
||
if ( *s == '/')
|
||
{ /* "#/" indicates an issuer's DN */
|
||
s++;
|
||
if (!*s || spacep (s))
|
||
return 0; /* no DN or prefixed with a space */
|
||
desc->u.name = s;
|
||
mode = KEYDB_SEARCH_MODE_ISSUER;
|
||
}
|
||
else
|
||
{ /* serialnumber + optional issuer ID */
|
||
for (si=s; *si && *si != '/'; si++)
|
||
{
|
||
if (!strchr("01234567890abcdefABCDEF", *si))
|
||
return 0; /* invalid digit in serial number*/
|
||
}
|
||
desc->sn = (const unsigned char*)s;
|
||
desc->snlen = -1;
|
||
if (!*si)
|
||
mode = KEYDB_SEARCH_MODE_SN;
|
||
else
|
||
{
|
||
s = si+1;
|
||
if (!*s || spacep (s))
|
||
return 0; /* no DN or prefixed with a space */
|
||
desc->u.name = s;
|
||
mode = KEYDB_SEARCH_MODE_ISSUER_SN;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case ':': /*Unified fingerprint */
|
||
{
|
||
const char *se, *si;
|
||
int i;
|
||
|
||
se = strchr (++s,':');
|
||
if (!se)
|
||
return 0;
|
||
for (i=0,si=s; si < se; si++, i++ )
|
||
{
|
||
if (!strchr("01234567890abcdefABCDEF", *si))
|
||
return 0; /* invalid digit */
|
||
}
|
||
if (i != 32 && i != 40)
|
||
return 0; /* invalid length of fpr*/
|
||
for (i=0,si=s; si < se; i++, si +=2)
|
||
desc->u.fpr[i] = hextobyte(si);
|
||
for (; i < 20; i++)
|
||
desc->u.fpr[i]= 0;
|
||
s = se + 1;
|
||
mode = KEYDB_SEARCH_MODE_FPR;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
if (s[0] == '0' && s[1] == 'x')
|
||
{
|
||
hexprefix = 1;
|
||
s += 2;
|
||
}
|
||
|
||
hexlength = strspn(s, "0123456789abcdefABCDEF");
|
||
if (hexlength >= 8 && s[hexlength] =='!')
|
||
{
|
||
*force_exact = 1;
|
||
hexlength++; /* just for the following check */
|
||
}
|
||
|
||
/* check if a hexadecimal number is terminated by EOS or blank */
|
||
if (hexlength && s[hexlength] && !spacep (s+hexlength))
|
||
{
|
||
if (hexprefix) /* a "0x" prefix without correct */
|
||
return 0; /* termination is an error */
|
||
/* The first chars looked like a hex number, but really is
|
||
not */
|
||
hexlength = 0;
|
||
}
|
||
|
||
if (*force_exact)
|
||
hexlength--; /* remove the bang */
|
||
|
||
if (hexlength == 8
|
||
|| (!hexprefix && hexlength == 9 && *s == '0'))
|
||
{ /* short keyid */
|
||
unsigned long kid;
|
||
if (hexlength == 9)
|
||
s++;
|
||
kid = strtoul( s, NULL, 16 );
|
||
desc->u.kid[4] = kid >> 24;
|
||
desc->u.kid[5] = kid >> 16;
|
||
desc->u.kid[6] = kid >> 8;
|
||
desc->u.kid[7] = kid;
|
||
mode = KEYDB_SEARCH_MODE_SHORT_KID;
|
||
}
|
||
else if (hexlength == 16
|
||
|| (!hexprefix && hexlength == 17 && *s == '0'))
|
||
{ /* complete keyid */
|
||
unsigned long kid0, kid1;
|
||
char buf[9];
|
||
if (hexlength == 17)
|
||
s++;
|
||
mem2str(buf, s, 9 );
|
||
kid0 = strtoul (buf, NULL, 16);
|
||
kid1 = strtoul (s+8, NULL, 16);
|
||
desc->u.kid[0] = kid0 >> 24;
|
||
desc->u.kid[1] = kid0 >> 16;
|
||
desc->u.kid[2] = kid0 >> 8;
|
||
desc->u.kid[3] = kid0;
|
||
desc->u.kid[4] = kid1 >> 24;
|
||
desc->u.kid[5] = kid1 >> 16;
|
||
desc->u.kid[6] = kid1 >> 8;
|
||
desc->u.kid[7] = kid1;
|
||
mode = KEYDB_SEARCH_MODE_LONG_KID;
|
||
}
|
||
else if (hexlength == 32
|
||
|| (!hexprefix && hexlength == 33 && *s == '0'))
|
||
{ /* md5 fingerprint */
|
||
int i;
|
||
if (hexlength == 33)
|
||
s++;
|
||
memset(desc->u.fpr+16, 0, 4);
|
||
for (i=0; i < 16; i++, s+=2)
|
||
{
|
||
int c = hextobyte(s);
|
||
if (c == -1)
|
||
return 0;
|
||
desc->u.fpr[i] = c;
|
||
}
|
||
mode = KEYDB_SEARCH_MODE_FPR16;
|
||
}
|
||
else if (hexlength == 40
|
||
|| (!hexprefix && hexlength == 41 && *s == '0'))
|
||
{ /* sha1/rmd160 fingerprint */
|
||
int i;
|
||
if (hexlength == 41)
|
||
s++;
|
||
for (i=0; i < 20; i++, s+=2)
|
||
{
|
||
int c = hextobyte(s);
|
||
if (c == -1)
|
||
return 0;
|
||
desc->u.fpr[i] = c;
|
||
}
|
||
mode = KEYDB_SEARCH_MODE_FPR20;
|
||
}
|
||
else if (!hexprefix)
|
||
{
|
||
/* The fingerprint in an X.509 listing is often delimited by
|
||
colons, so we try to single this case out. */
|
||
mode = 0;
|
||
hexlength = strspn (s, ":0123456789abcdefABCDEF");
|
||
if (hexlength == 59 && (!s[hexlength] || spacep (s+hexlength)))
|
||
{
|
||
int i;
|
||
|
||
for (i=0; i < 20; i++, s += 3)
|
||
{
|
||
int c = hextobyte(s);
|
||
if (c == -1 || (i < 19 && s[2] != ':'))
|
||
break;
|
||
desc->u.fpr[i] = c;
|
||
}
|
||
if (i == 20)
|
||
mode = KEYDB_SEARCH_MODE_FPR20;
|
||
}
|
||
if (!mode) /* default is substring search */
|
||
{
|
||
*force_exact = 0;
|
||
desc->u.name = s;
|
||
mode = KEYDB_SEARCH_MODE_SUBSTR;
|
||
}
|
||
}
|
||
else
|
||
{ /* hex number with a prefix but a wrong length */
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
desc->mode = mode;
|
||
return mode;
|
||
}
|
||
|
||
|
||
int
|
||
keydb_classify_name (const char *name, KEYDB_SEARCH_DESC *desc)
|
||
{
|
||
int dummy;
|
||
KEYDB_SEARCH_DESC dummy_desc;
|
||
|
||
if (!desc)
|
||
desc = &dummy_desc;
|
||
|
||
if (!classify_user_id (name, desc, &dummy))
|
||
return gpg_error (GPG_ERR_INV_NAME);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Store the certificate in the key DB but make sure that it does not
|
||
already exists. We do this simply by comparing the fingerprint.
|
||
If EXISTED is not NULL it will be set to true if the certificate
|
||
was already in the DB. */
|
||
int
|
||
keydb_store_cert (ksba_cert_t cert, int ephemeral, int *existed)
|
||
{
|
||
KEYDB_HANDLE kh;
|
||
int rc;
|
||
unsigned char fpr[20];
|
||
|
||
if (existed)
|
||
*existed = 0;
|
||
|
||
if (!gpgsm_get_fingerprint (cert, 0, fpr, NULL))
|
||
{
|
||
log_error (_("failed to get the fingerprint\n"));
|
||
return gpg_error (GPG_ERR_GENERAL);
|
||
}
|
||
|
||
kh = keydb_new (0);
|
||
if (!kh)
|
||
{
|
||
log_error (_("failed to allocate keyDB handle\n"));
|
||
return gpg_error (GPG_ERR_ENOMEM);;
|
||
}
|
||
|
||
if (ephemeral)
|
||
keydb_set_ephemeral (kh, 1);
|
||
|
||
rc = lock_all (kh);
|
||
if (rc)
|
||
return rc;
|
||
|
||
rc = keydb_search_fpr (kh, fpr);
|
||
if (rc != -1)
|
||
{
|
||
keydb_release (kh);
|
||
if (!rc)
|
||
{
|
||
if (existed)
|
||
*existed = 1;
|
||
return 0; /* okay */
|
||
}
|
||
log_error (_("problem looking for existing certificate: %s\n"),
|
||
gpg_strerror (rc));
|
||
return rc;
|
||
}
|
||
|
||
rc = keydb_locate_writable (kh, 0);
|
||
if (rc)
|
||
{
|
||
log_error (_("error finding writable keyDB: %s\n"), gpg_strerror (rc));
|
||
keydb_release (kh);
|
||
return rc;
|
||
}
|
||
|
||
rc = keydb_insert_cert (kh, cert);
|
||
if (rc)
|
||
{
|
||
log_error (_("error storing certificate: %s\n"), gpg_strerror (rc));
|
||
keydb_release (kh);
|
||
return rc;
|
||
}
|
||
keydb_release (kh);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* This is basically keydb_set_flags but it implements a complete
|
||
transaction by locating the certificate in the DB and updating the
|
||
flags. */
|
||
gpg_error_t
|
||
keydb_set_cert_flags (ksba_cert_t cert, int which, int idx, unsigned int value)
|
||
{
|
||
KEYDB_HANDLE kh;
|
||
gpg_error_t err;
|
||
unsigned char fpr[20];
|
||
unsigned int old_value;
|
||
|
||
if (!gpgsm_get_fingerprint (cert, 0, fpr, NULL))
|
||
{
|
||
log_error (_("failed to get the fingerprint\n"));
|
||
return gpg_error (GPG_ERR_GENERAL);
|
||
}
|
||
|
||
kh = keydb_new (0);
|
||
if (!kh)
|
||
{
|
||
log_error (_("failed to allocate keyDB handle\n"));
|
||
return gpg_error (GPG_ERR_ENOMEM);;
|
||
}
|
||
|
||
err = keydb_lock (kh);
|
||
if (err)
|
||
{
|
||
log_error (_("error locking keybox: %s\n"), gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
|
||
err = keydb_search_fpr (kh, fpr);
|
||
if (err)
|
||
{
|
||
log_error (_("problem re-searching certificate: %s\n"),
|
||
gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
|
||
err = keydb_get_flags (kh, which, idx, &old_value);
|
||
if (err)
|
||
{
|
||
log_error (_("error getting stored flags: %s\n"), gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
if (value != old_value)
|
||
{
|
||
err = keydb_set_flags (kh, which, idx, value);
|
||
if (err)
|
||
{
|
||
log_error (_("error storing flags: %s\n"), gpg_strerror (err));
|
||
keydb_release (kh);
|
||
return err;
|
||
}
|
||
}
|
||
keydb_release (kh);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Reset all the certificate flags we have stored with the certificates
|
||
for performance reasons. */
|
||
void
|
||
keydb_clear_some_cert_flags (ctrl_t ctrl, STRLIST names)
|
||
{
|
||
gpg_error_t err;
|
||
KEYDB_HANDLE hd = NULL;
|
||
KEYDB_SEARCH_DESC *desc = NULL;
|
||
int ndesc;
|
||
STRLIST sl;
|
||
int rc=0;
|
||
unsigned int old_value, value;
|
||
|
||
hd = keydb_new (0);
|
||
if (!hd)
|
||
{
|
||
log_error ("keydb_new failed\n");
|
||
goto leave;
|
||
}
|
||
|
||
if (!names)
|
||
ndesc = 1;
|
||
else
|
||
{
|
||
for (sl=names, ndesc=0; sl; sl = sl->next, ndesc++)
|
||
;
|
||
}
|
||
|
||
desc = xtrycalloc (ndesc, sizeof *desc);
|
||
if (!ndesc)
|
||
{
|
||
log_error ("allocating memory failed: %s\n",
|
||
gpg_strerror (OUT_OF_CORE (errno)));
|
||
goto leave;
|
||
}
|
||
|
||
if (!names)
|
||
desc[0].mode = KEYDB_SEARCH_MODE_FIRST;
|
||
else
|
||
{
|
||
for (ndesc=0, sl=names; sl; sl = sl->next)
|
||
{
|
||
rc = keydb_classify_name (sl->d, desc+ndesc);
|
||
if (rc)
|
||
{
|
||
log_error ("key `%s' not found: %s\n",
|
||
sl->d, gpg_strerror (rc));
|
||
rc = 0;
|
||
}
|
||
else
|
||
ndesc++;
|
||
}
|
||
}
|
||
|
||
err = keydb_lock (hd);
|
||
if (err)
|
||
{
|
||
log_error (_("error locking keybox: %s\n"), gpg_strerror (err));
|
||
goto leave;
|
||
}
|
||
|
||
while (!(rc = keydb_search (hd, desc, ndesc)))
|
||
{
|
||
if (!names)
|
||
desc[0].mode = KEYDB_SEARCH_MODE_NEXT;
|
||
|
||
err = keydb_get_flags (hd, KEYBOX_FLAG_VALIDITY, 0, &old_value);
|
||
if (err)
|
||
{
|
||
log_error (_("error getting stored flags: %s\n"),
|
||
gpg_strerror (err));
|
||
goto leave;
|
||
}
|
||
|
||
value = (old_value & ~VALIDITY_REVOKED);
|
||
if (value != old_value)
|
||
{
|
||
err = keydb_set_flags (hd, KEYBOX_FLAG_VALIDITY, 0, value);
|
||
if (err)
|
||
{
|
||
log_error (_("error storing flags: %s\n"), gpg_strerror (err));
|
||
goto leave;
|
||
}
|
||
}
|
||
}
|
||
if (rc && rc != -1)
|
||
log_error ("keydb_search failed: %s\n", gpg_strerror (rc));
|
||
|
||
leave:
|
||
xfree (desc);
|
||
keydb_release (hd);
|
||
}
|
||
|
||
|