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/* $OpenBSD: map.c,v 1.33 2012/10/13 08:01:47 eric 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 <err.h>
#include <errno.h>
#include <event.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "smtpd.h"
#include "log.h"
struct map_backend *map_backend_lookup(enum map_src);
extern struct map_backend map_backend_static;
extern struct map_backend map_backend_db;
extern struct map_backend map_backend_stdio;
/* extern struct map_backend map_backend_ldap; */
static objid_t last_map_id = 0;
struct map_backend *
map_backend_lookup(enum map_src source)
{
switch (source) {
case S_NONE:
return &map_backend_static;
case S_DB:
return &map_backend_db;
case S_PLAIN:
return &map_backend_stdio;
/*
case S_LDAP:
return &map_backend_ldap;
*/
default:
fatalx("invalid map type");
}
return NULL;
}
struct map *
map_findbyname(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(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(objid_t mapid, const char *key, enum map_kind kind)
{
void *hdl = NULL;
char *ret = NULL;
struct map *map;
struct map_backend *backend = NULL;
map = map_find(mapid);
if (map == NULL) {
errno = EINVAL;
return NULL;
}
backend = map_backend_lookup(map->m_src);
hdl = backend->open(map);
if (hdl == NULL) {
log_warn("map_lookup: can't open %s", map->m_config);
if (errno == 0)
errno = ENOTSUP;
return NULL;
}
ret = backend->lookup(hdl, key, kind);
backend->close(hdl);
errno = 0;
return ret;
}
int
map_compare(objid_t mapid, const char *key, enum map_kind kind,
int (*func)(const char *, const char *))
{
void *hdl = NULL;
struct map *map;
struct map_backend *backend = NULL;
int ret;
map = map_find(mapid);
if (map == NULL) {
errno = EINVAL;
return 0;
}
backend = map_backend_lookup(map->m_src);
hdl = backend->open(map);
if (hdl == NULL) {
log_warn("map_compare: can't open %s", map->m_config);
if (errno == 0)
errno = ENOTSUP;
return 0;
}
ret = backend->compare(hdl, key, kind, func);
backend->close(hdl);
errno = 0;
return ret;
}
struct map*
map_create(enum map_src src, const char *name)
{
struct map *m;
size_t n;
if (name && map_findbyname(name))
errx(1, "map_create: map \"%s\" already defined", name);
m = xcalloc(1, sizeof(*m), "map_create");
m->m_src = src;
m->m_id = ++last_map_id;
if (m->m_id == INT_MAX)
errx(1, "map_create: too many maps defined");
if (name == NULL)
snprintf(m->m_name, sizeof(m->m_name), "<dynamic:%u>", m->m_id);
else {
n = strlcpy(m->m_name, name, sizeof(m->m_name));
if (n >= sizeof(m->m_name))
errx(1, "map_create: map name too long");
}
TAILQ_INIT(&m->m_contents);
TAILQ_INSERT_TAIL(env->sc_maps, m, m_entry);
return (m);
}
void
map_add(struct map *m, const char *key, const char * val)
{
struct mapel *me;
size_t n;
if (m->m_src != S_NONE)
errx(1, "map_add: cannot add to map");
me = xcalloc(1, sizeof(*me), "map_add");
n = strlcpy(me->me_key.med_string, key, sizeof(me->me_key.med_string));
if (n >= sizeof(me->me_key.med_string))
errx(1, "map_add: key too long");
if (val) {
n = strlcpy(me->me_val.med_string, key,
sizeof(me->me_val.med_string));
if (n >= sizeof(me->me_val.med_string))
errx(1, "map_add: value too long");
}
TAILQ_INSERT_TAIL(&m->m_contents, me, me_entry);
}
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