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/* $Id$ */
/***
This file is part of syrep.
syrep 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.
syrep 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 syrep; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <time.h>
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include "forget.h"
#include "dbstruct.h"
#include "util.h"
#include "dbutil.h"
#include "update.h"
static int copy_entries(struct syrep_db_context *c, struct syrep_db_context *target, uint32_t limit) {
int ret, r = -1;
DBT key, data;
DBC *cursor = NULL;
unsigned n = 0, t = 0;
assert(c);
if ((ret = c->db_id_meta->cursor(c->db_id_meta, NULL, &cursor, 0)) != 0) {
c->db_id_meta->err(c->db_id_meta, ret, "id_meta");
goto finish;
}
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
while ((ret = cursor->c_get(cursor, &key, &data, DB_NEXT)) == 0) {
struct syrep_id *id = (struct syrep_id*) key.data;
struct syrep_meta *meta = (struct syrep_meta*) data.data;
struct syrep_name name;
uint32_t ts;
if (interrupted) {
fprintf(stderr, "Canceled.\n");
goto finish;
}
rotdash();
t++;
if ((ts = get_version_timestamp(c, meta->last_seen)) == (uint32_t) -1)
goto finish;
if (ts < limit)
continue;
n++;
/* copy it */
if (get_name_by_nrecno(c, &id->nrecno, &name) < 0)
goto finish;
if (write_entry(target, &name, &id->md, meta) < 0)
goto finish;
}
if (ret != DB_NOTFOUND) {
c->db_version_timestamp->err(c->db_id_meta, ret, "id_meta::c_get");
goto finish;
}
if (args.verbose_flag)
fprintf(stderr, "Removed %u of %u file entries.\n", t-n, t);
r = 0;
finish:
if (cursor)
cursor->c_close(cursor);
return r;
}
static int copy_history(struct syrep_db_context *c, struct syrep_db_context *target, uint32_t limit) {
int ret, r = -1;
DBT key, data;
DBC *cursor = NULL;
unsigned n = 0, t = 0;
assert(c);
if ((ret = c->db_version_timestamp->cursor(c->db_version_timestamp, NULL, &cursor, 0)) != 0) {
c->db_version_timestamp->err(c->db_version_timestamp, ret, "version_timestamp");
goto finish;
}
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
while ((ret = cursor->c_get(cursor, &key, &data, DB_NEXT)) == 0) {
struct syrep_timestamp *timestamp = (struct syrep_timestamp*) data.data;
assert(timestamp);
if (interrupted) {
fprintf(stderr, "Canceled.\n");
goto finish;
}
rotdash();
t++;
if (timestamp->t < limit)
continue;
n++;
/* copy it */
if ((ret = target->db_version_timestamp->put(target->db_version_timestamp, NULL, &key, &data, 0)) != 0) {
c->db_version_timestamp->err(c->db_version_timestamp, ret, "version_timestamp::put");
goto finish;
}
}
if (ret != DB_NOTFOUND) {
c->db_version_timestamp->err(c->db_version_timestamp, ret, "version_timestamp::c_get");
goto finish;
}
if (args.verbose_flag)
fprintf(stderr, "Removed %u of %u history entries.\n", t-n, t);
r = 0;
finish:
if (cursor)
cursor->c_close(cursor);
return r;
}
int forget(struct syrep_db_context *c, struct syrep_db_context *target) {
time_t t;
time_t now, limit;
assert(c && target);
if (args.remember_arg < 0) {
fprintf(stderr, "ERROR: The remembrance time has to be greater or equal to 0\n");
return -1;
}
t = (time_t) args.remember_arg*24*60*60;
time(&now);
limit = t > now ? 0 : now-t;
if (args.verbose_flag) {
fprintf(stderr, "Current time is %s", ctime(&now));
fprintf(stderr, "Forgetting all entries prior to %s", ctime(&limit));
}
if (copy_entries(c, target, (uint32_t) limit) < 0)
return -1;
if (copy_history(c, target, (uint32_t) limit) < 0)
return -1;
target->timestamp = c->timestamp;
target->version = c->version;
free(target->origin);
target->origin = strdup(c->origin);
target->modified = 1;
return 0;
}
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