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+/* tdbio.h - Trust database I/O functions
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2012 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef G10_TDBIO_H
+#define G10_TDBIO_H
+
+#include "../common/host2net.h"
+
+#define TRUST_RECORD_LEN 40
+#define SIGS_PER_RECORD ((TRUST_RECORD_LEN-10)/5)
+#define ITEMS_PER_HTBL_RECORD ((TRUST_RECORD_LEN-2)/4)
+#define ITEMS_PER_HLST_RECORD ((TRUST_RECORD_LEN-6)/5)
+#define ITEMS_PER_PREF_RECORD (TRUST_RECORD_LEN-10)
+#if ITEMS_PER_PREF_RECORD % 2
+#error ITEMS_PER_PREF_RECORD must be even
+#endif
+#define MAX_LIST_SIGS_DEPTH 20
+
+
+#define RECTYPE_VER 1
+#define RECTYPE_HTBL 10
+#define RECTYPE_HLST 11
+#define RECTYPE_TRUST 12
+#define RECTYPE_VALID 13
+#define RECTYPE_FREE 254
+
+
+struct trust_record {
+ int rectype;
+ int mark;
+ int dirty; /* for now only used internal by functions */
+ struct trust_record *next; /* help pointer to build lists in memory */
+ ulong recnum;
+ union {
+ struct { /* version record: */
+ byte version; /* should be 3 */
+ byte marginals;
+ byte completes;
+ byte cert_depth;
+ byte trust_model;
+ byte min_cert_level;
+ ulong created; /* timestamp of trustdb creation */
+ ulong nextcheck; /* timestamp of next scheduled check */
+ ulong reserved;
+ ulong reserved2;
+ ulong firstfree;
+ ulong reserved3;
+ ulong trusthashtbl;
+ } ver;
+ struct { /* free record */
+ ulong next;
+ } free;
+ struct {
+ ulong item[ITEMS_PER_HTBL_RECORD];
+ } htbl;
+ struct {
+ ulong next;
+ ulong rnum[ITEMS_PER_HLST_RECORD]; /* of another record */
+ } hlst;
+ struct {
+ byte fingerprint[20];
+ byte ownertrust;
+ byte depth;
+ ulong validlist;
+ byte min_ownertrust;
+ byte flags;
+ } trust;
+ struct {
+ byte namehash[20];
+ ulong next;
+ byte validity;
+ byte full_count;
+ byte marginal_count;
+ } valid;
+ } r;
+};
+typedef struct trust_record TRUSTREC;
+
+/*-- tdbio.c --*/
+int tdbio_update_version_record (ctrl_t ctrl);
+int tdbio_set_dbname (ctrl_t ctrl, const char *new_dbname,
+ int create, int *r_nofile);
+const char *tdbio_get_dbname(void);
+void tdbio_dump_record( TRUSTREC *rec, estream_t fp );
+int tdbio_read_record( ulong recnum, TRUSTREC *rec, int expected );
+int tdbio_write_record (ctrl_t ctrl, TRUSTREC *rec);
+int tdbio_db_matches_options(void);
+byte tdbio_read_model(void);
+ulong tdbio_read_nextcheck (void);
+int tdbio_write_nextcheck (ctrl_t ctrl, ulong stamp);
+int tdbio_is_dirty(void);
+int tdbio_sync(void);
+int tdbio_begin_transaction(void);
+int tdbio_end_transaction(void);
+int tdbio_cancel_transaction(void);
+int tdbio_delete_record (ctrl_t ctrl, ulong recnum);
+ulong tdbio_new_recnum (ctrl_t ctrl);
+gpg_error_t tdbio_search_trust_byfpr (ctrl_t ctrl, const byte *fingerprint,
+ TRUSTREC *rec);
+gpg_error_t tdbio_search_trust_bypk (ctrl_t ctrl, PKT_public_key *pk,
+ TRUSTREC *rec);
+
+void tdbio_how_to_fix (void);
+void tdbio_invalid(void);
+
+#endif /*G10_TDBIO_H*/