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/* $OpenBSD: map.c,v 1.20 2010/10/09 22:05:35 gilles Exp $ */
/*
* Copyright (c) 2008 Gilles Chehade <gilles@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <ctype.h>
#include <db.h>
#include <err.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "smtpd.h"
struct map_backend *map_backend_lookup(enum map_src);
struct map_parser *map_parser_lookup(enum map_kind);
struct map *
map_findbyname(struct smtpd *env, const char *name)
{
struct map *m;
TAILQ_FOREACH(m, env->sc_maps, m_entry) {
if (strcmp(m->m_name, name) == 0)
break;
}
return (m);
}
struct map *
map_find(struct smtpd *env, objid_t id)
{
struct map *m;
TAILQ_FOREACH(m, env->sc_maps, m_entry) {
if (m->m_id == id)
break;
}
return (m);
}
void *
map_lookup(struct smtpd *env, objid_t mapid, char *key, enum map_kind kind)
{
void *hdl = NULL;
char *result = NULL;
char *ret = NULL;
size_t len;
struct map *map;
struct map_backend *backend = NULL;
struct map_parser *parser = NULL;
map = map_find(env, mapid);
if (map == NULL)
return NULL;
backend = map_backend_lookup(map->m_src);
parser = map_parser_lookup(kind);
hdl = backend->open(map->m_config);
if (hdl == NULL) {
log_warn("map_lookup: can't open %s", map->m_config);
return NULL;
}
ret = result = backend->get(hdl, key, &len);
if (ret == NULL)
goto end;
if (parser->extract != NULL) {
ret = parser->extract(key, result, len);
free(result);
}
end:
backend->close(hdl);
return ret;
}
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