/* tdbdump.c
* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "errors.h"
#include "iobuf.h"
#include "keydb.h"
#include <gcrypt.h>
#include "util.h"
#include "trustdb.h"
#include "options.h"
#include "packet.h"
#include "main.h"
#include "i18n.h"
#include "tdbio.h"
#define HEXTOBIN(x) ( (x) >= '0' && (x) <= '9' ? ((x)-'0') : \
(x) >= 'A' && (x) <= 'F' ? ((x)-'A'+10) : ((x)-'a'+10))
/****************
* Read a record but die if it does not exist
* fixme: duplicate: remove it
*/
#if 0
static void
read_record( ulong recno, TRUSTREC *rec, int rectype )
{
int rc = tdbio_read_record( recno, rec, rectype );
if( !rc )
return;
log_error(_("trust record %lu, req type %d: read failed: %s\n"),
recno, rectype, gpg_errstr(rc) );
tdbio_invalid();
}
#endif
/****************
* Wirte a record but die on error
*/
static void
write_record( TRUSTREC *rec )
{
int rc = tdbio_write_record( rec );
if( !rc )
return;
log_error(_("trust record %lu, type %d: write failed: %s\n"),
rec->recnum, rec->rectype, gpg_errstr(rc) );
tdbio_invalid();
}
/****************
* sync the db
*/
static void
do_sync(void)
{
int rc = tdbio_sync();
if( !rc )
return;
log_error(_("trustdb: sync failed: %s\n"), gpg_errstr(rc) );
gpg_exit(2);
}
#if 0
static int
print_sigflags( FILE *fp, unsigned flags )
{
if( flags & SIGF_CHECKED ) {
fprintf(fp,"%c%c%c",
(flags & SIGF_VALID) ? 'V':'-',
(flags & SIGF_EXPIRED) ? 'E':'-',
(flags & SIGF_REVOKED) ? 'R':'-');
}
else if( flags & SIGF_NOPUBKEY)
fputs("?--", fp);
else
fputs("---", fp);
return 3;
}
#endif
/****************
* Walk through the signatures of a public key.
* The caller must provide a context structure, with all fields set
* to zero, but the local_id field set to the requested key;
* This function does not change this field. On return the context
* is filled with the local-id of the signature and the signature flag.
* No fields should be changed (clearing all fields and setting
* pubkeyid is okay to continue with an other pubkey)
* Returns: 0 - okay, -1 for eof (no more sigs) or any other errorcode
* FIXME: Do we really need this large and complicated function?
*/
#if 0
static int
walk_sigrecs( SIGREC_CONTEXT *c )
{
TRUSTREC *r;
ulong rnum;
if( c->ctl.eof )
return -1;
r = &c->ctl.rec;
if( !c->ctl.init_done ) {
c->ctl.init_done = 1;
read_record( c->lid, r, 0 );
if( r->rectype != RECTYPE_DIR ) {
c->ctl.eof = 1;
return -1; /* return eof */
}
c->ctl.nextuid = r->r.dir.uidlist;
/* force a read */
c->ctl.index = SIGS_PER_RECORD;
r->r.sig.next = 0;
}
/* need a loop to skip over deleted sigs */
do {
if( c->ctl.index >= SIGS_PER_RECORD ) { /* read the record */
rnum = r->r.sig.next;
if( !rnum && c->ctl.nextuid ) { /* read next uid record */
read_record( c->ctl.nextuid, r, RECTYPE_UID );
c->ctl.nextuid = r->r.uid.next;
rnum = r->r.uid.siglist;
}
if( !rnum ) {
c->ctl.eof = 1;
return -1; /* return eof */
}
read_record( rnum, r, RECTYPE_SIG );
if( r->r.sig.lid != c->lid ) {
log_error(_("chained sigrec %lu has a wrong owner\n"), rnum );
c->ctl.eof = 1;
tdbio_invalid();
}
c->ctl.index = 0;
}
} while( !r->r.sig.sig[c->ctl.index++].lid );
c->sig_lid = r->r.sig.sig[c->ctl.index-1].lid;
c->sig_flag = r->r.sig.sig[c->ctl.index-1].flag;
return 0;
}
#endif
#if 0
static int
do_list_sigs( ulong root, ulong pk_lid, int depth,
LOCAL_ID_TABLE lids, unsigned *lineno )
{
SIGREC_CONTEXT sx;
int rc;
u32 keyid[2];
memset( &sx, 0, sizeof sx );
sx.lid = pk_lid;
for(;;) {
rc = walk_sigrecs( &sx ); /* should we replace it and use */
if( rc )
break;
rc = keyid_from_lid( sx.sig_lid, keyid );
if( rc ) {
printf("%6u: %*s????????.%lu:", *lineno, depth*4, "", sx.sig_lid );
print_sigflags( stdout, sx.sig_flag );
putchar('\n');
++*lineno;
}
else {
printf("%6u: %*s%08lX.%lu:", *lineno, depth*4, "",
(ulong)keyid[1], sx.sig_lid );
print_sigflags( stdout, sx.sig_flag );
putchar(' ');
/* check whether we already checked this pk_lid */
if( !qry_lid_table_flag( ultikey_table, sx.sig_lid, NULL ) ) {
print_user_id("[ultimately trusted]", keyid);
++*lineno;
}
else if( sx.sig_lid == pk_lid ) {
printf("[self-signature]\n");
++*lineno;
}
else if( sx.sig_lid == root ) {
printf("[closed]\n");
++*lineno;
}
else if( ins_lid_table_item( lids, sx.sig_lid, *lineno ) ) {
unsigned refline;
qry_lid_table_flag( lids, sx.sig_lid, &refline );
printf("[see line %u]\n", refline);
++*lineno;
}
else if( depth+1 >= MAX_LIST_SIGS_DEPTH ) {
print_user_id( "[too deeply nested]", keyid );
++*lineno;
}
else {
print_user_id( "", keyid );
++*lineno;
rc = do_list_sigs( root, sx.sig_lid, depth+1, lids, lineno );
if( rc )
break;
}
}
}
return rc==-1? 0 : rc;
}
#endif
/****************
* List all signatures of a public key
*/
static int
list_sigs( ulong pubkey_id )
{
int rc=0;
#if 0
u32 keyid[2];
LOCAL_ID_TABLE lids;
unsigned lineno = 1;
rc = keyid_from_lid( pubkey_id, keyid );
if( rc )
return rc;
printf("Signatures of %08lX.%lu ", (ulong)keyid[1], pubkey_id );
print_user_id("", keyid);
printf("----------------------\n");
lids = new_lid_table();
rc = do_list_sigs( pubkey_id, pubkey_id, 0, lids, &lineno );
putchar('\n');
release_lid_table(lids);
#endif
return rc;
}
/****************
* List all records of a public key
*/
static int
list_records( ulong lid )
{
int rc;
TRUSTREC dr, ur, rec;
ulong recno;
rc = tdbio_read_record( lid, &dr, RECTYPE_DIR );
if( rc ) {
log_error(_("lid %lu: read dir record failed: %s\n"),
lid, gpg_errstr(rc));
return rc;
}
tdbio_dump_record( &dr, stdout );
for( recno=dr.r.dir.keylist; recno; recno = rec.r.key.next ) {
rc = tdbio_read_record( recno, &rec, 0 );
if( rc ) {
log_error(_("lid %lu: read key record failed: %s\n"),
lid, gpg_errstr(rc));
return rc;
}
tdbio_dump_record( &rec, stdout );
}
for( recno=dr.r.dir.uidlist; recno; recno = ur.r.uid.next ) {
rc = tdbio_read_record( recno, &ur, RECTYPE_UID );
if( rc ) {
log_error(_("lid %lu: read uid record failed: %s\n"),
lid, gpg_errstr(rc));
return rc;
}
tdbio_dump_record( &ur, stdout );
/* preference records */
for(recno=ur.r.uid.prefrec; recno; recno = rec.r.pref.next ) {
rc = tdbio_read_record( recno, &rec, RECTYPE_PREF );
if( rc ) {
log_error(_("lid %lu: read pref record failed: %s\n"),
lid, gpg_errstr(rc));
return rc;
}
tdbio_dump_record( &rec, stdout );
}
/* sig records */
for(recno=ur.r.uid.siglist; recno; recno = rec.r.sig.next ) {
rc = tdbio_read_record( recno, &rec, RECTYPE_SIG );
if( rc ) {
log_error(_("lid %lu: read sig record failed: %s\n"),
lid, gpg_errstr(rc));
return rc;
}
tdbio_dump_record( &rec, stdout );
}
}
/* add cache record dump here */
return rc;
}
/****************
* Dump the complte trustdb or only the entries of one key.
*/
void
list_trustdb( const char *username )
{
TRUSTREC rec;
init_trustdb();
if( username && *username == '#' ) {
int rc;
ulong lid = atoi(username+1);
if( (rc = list_records( lid)) )
log_error(_("user '%s' read problem: %s\n"),
username, gpg_errstr(rc));
else if( (rc = list_sigs( lid )) )
log_error(_("user '%s' list problem: %s\n"),
username, gpg_errstr(rc));
}
else if( username ) {
PKT_public_key *pk = gcry_xcalloc( 1, sizeof *pk );
int rc;
if( (rc = get_pubkey_byname( NULL, pk, username, NULL )) )
log_error(_("user '%s' not found: %s\n"), username, gpg_errstr(rc) );
else if( (rc=tdbio_search_dir_bypk( pk, &rec )) && rc != -1 )
log_error(_("problem finding '%s' in trustdb: %s\n"),
username, gpg_errstr(rc));
else if( rc == -1 )
log_error(_("user '%s' not in trustdb\n"), username);
else if( (rc = list_records( pk->local_id)) )
log_error(_("user '%s' read problem: %s\n"),
username, gpg_errstr(rc));
else if( (rc = list_sigs( pk->local_id )) )
log_error(_("user '%s' list problem: %s\n"),
username, gpg_errstr(rc));
free_public_key( pk );
}
else {
ulong recnum;
int i;
printf("TrustDB: %s\n", tdbio_get_dbname() );
for(i=9+strlen(tdbio_get_dbname()); i > 0; i-- )
putchar('-');
putchar('\n');
for(recnum=0; !tdbio_read_record( recnum, &rec, 0); recnum++ )
tdbio_dump_record( &rec, stdout );
}
}
/****************
* Print a list of all defined owner trust value.
*/
void
export_ownertrust()
{
TRUSTREC rec;
TRUSTREC rec2;
ulong recnum;
int i;
byte *p;
int rc;
init_trustdb();
printf(_("# List of assigned trustvalues, created %s\n"
"# (Use \"gpg --import-ownertrust\" to restore them)\n"),
asctimestamp( make_timestamp() ) );
for(recnum=0; !tdbio_read_record( recnum, &rec, 0); recnum++ ) {
if( rec.rectype == RECTYPE_DIR ) {
if( !rec.r.dir.keylist ) {
log_error(_("directory record w/o primary key\n"));
continue;
}
if( !rec.r.dir.ownertrust )
continue;
rc = tdbio_read_record( rec.r.dir.keylist, &rec2, RECTYPE_KEY);
if( rc ) {
log_error(_("error reading key record: %s\n"), gpg_errstr(rc));
continue;
}
p = rec2.r.key.fingerprint;
for(i=0; i < rec2.r.key.fingerprint_len; i++, p++ )
printf("%02X", *p );
printf(":%u:\n", (unsigned)rec.r.dir.ownertrust );
}
}
}
void
import_ownertrust( const char *fname )
{
FILE *fp;
int is_stdin=0;
char line[256];
char *p;
size_t n, fprlen;
unsigned otrust;
init_trustdb();
if( !fname || (*fname == '-' && !fname[1]) ) {
fp = stdin;
fname = "[stdin]";
is_stdin = 1;
}
else if( !(fp = fopen( fname, "r" )) ) {
log_error_f(fname, _("can't open file: %s\n"), strerror(errno) );
return;
}
while( fgets( line, DIM(line)-1, fp ) ) {
TRUSTREC rec;
int rc;
if( !*line || *line == '#' )
continue;
n = strlen(line);
if( line[n-1] != '\n' ) {
log_error_f(fname, _("line too long\n") );
/* ... or last line does not have a LF */
break; /* can't continue */
}
for(p = line; *p && *p != ':' ; p++ )
if( !isxdigit(*p) )
break;
if( *p != ':' ) {
log_error_f(fname, _("error: missing colon\n") );
continue;
}
fprlen = p - line;
if( fprlen != 32 && fprlen != 40 ) {
log_error_f(fname, _("error: invalid fingerprint\n") );
continue;
}
if( sscanf(p, ":%u:", &otrust ) != 1 ) {
log_error_f(fname, _("error: no ownertrust value\n") );
continue;
}
if( !otrust )
continue; /* no otrust defined - no need to update or insert */
/* convert the ascii fingerprint to binary */
for(p=line, fprlen=0; *p != ':'; p += 2 )
line[fprlen++] = HEXTOBIN(p[0]) * 16 + HEXTOBIN(p[1]);
line[fprlen] = 0;
repeat:
rc = tdbio_search_dir_byfpr( line, fprlen, 0, &rec );
if( !rc ) { /* found: update */
if( rec.r.dir.ownertrust )
log_info("LID %lu: changing trust from %u to %u\n",
rec.r.dir.lid, rec.r.dir.ownertrust, otrust );
else
log_info("LID %lu: setting trust to %u\n",
rec.r.dir.lid, otrust );
rec.r.dir.ownertrust = otrust;
write_record( &rec );
}
else if( rc == -1 ) { /* not found; get the key from the ring */
PKT_public_key *pk = gcry_xcalloc( 1, sizeof *pk );
log_info_f(fname, _("key not in trustdb, searching ring.\n"));
rc = get_pubkey_byfprint( pk, line, fprlen );
if( rc )
log_info_f(fname, _("key not in ring: %s\n"), gpg_errstr(rc));
else {
rc = query_trust_record( pk ); /* only as assertion */
if( rc != -1 )
log_error_f(fname, _("Oops: key is now in trustdb???\n"));
else {
rc = insert_trust_record_by_pk( pk );
if( !rc )
goto repeat; /* update the ownertrust */
log_error_f(fname, _("insert trust record failed: %s\n"),
gpg_errstr(rc) );
}
}
}
else /* error */
log_error_f(fname, _("error finding dir record: %s\n"),
gpg_errstr(rc));
}
if( ferror(fp) )
log_error_f(fname, _("read error: %s\n"), strerror(errno) );
if( !is_stdin )
fclose(fp);
do_sync();
sync_trustdb();
}