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/* $OpenBSD: map_file.c,v 1.2 2012/11/12 14:58:53 eric Exp $ */
/*
* Copyright (c) 2012 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 "includes.h"
#include <sys/types.h>
#include "sys-queue.h"
#include "sys-tree.h"
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "smtpd.h"
#include "log.h"
/* file backend */
static void *map_file_open(struct map *);
static void map_file_update(struct map *);
static void *map_file_lookup(void *, const char *, enum map_kind);
static int map_file_compare(void *, const char *, enum map_kind,
int (*)(const char *, const char *));
static void map_file_close(void *);
struct map_backend *map_backend_lookup(const char *);
struct map_backend map_backend_file = {
map_file_open,
map_file_update,
map_file_close,
map_file_lookup,
map_file_compare
};
static void
file_load(struct map *m, FILE *fp)
{
char *buf, *lbuf;
size_t flen;
char *keyp;
char *valp;
lbuf = NULL;
while ((buf = fgetln(fp, &flen))) {
if (buf[flen - 1] == '\n')
buf[flen - 1] = '\0';
else {
lbuf = xmalloc(flen + 1, "map_stdio_get_entry");
memcpy(lbuf, buf, flen);
lbuf[flen] = '\0';
buf = lbuf;
}
keyp = buf;
while (isspace((int)*keyp))
++keyp;
if (*keyp == '\0' || *keyp == '#')
continue;
valp = keyp;
strsep(&valp, " \t:");
if (valp) {
while (*valp && isspace(*valp))
++valp;
if (*valp == '\0')
valp = NULL;
}
map_add(m, keyp, valp == keyp ? NULL : valp);
}
free(lbuf);
}
static void *
map_file_open(struct map *map)
{
FILE *fp = NULL;
struct map *mp = NULL;
if (map->m_handle)
return map->m_handle;
mp = map_create("static", NULL);
fp = fopen(map->m_config, "r");
if (fp == NULL)
goto err;
file_load(mp, fp);
fclose(fp);
map->m_handle = mp;
log_debug("debug: map_file_open: initialized map \"%s\" from %s",
map->m_name, map->m_config);
return mp;
err:
if (mp)
map_destroy(mp);
if (fp)
fclose(fp);
return NULL;
}
static void
map_file_update(struct map *map)
{
FILE *fp = NULL;
struct map *mp = NULL;
fp = fopen(map->m_config, "r");
if (fp == NULL) {
log_warn("warn: Could not update map \"%s\" from %s",
map->m_name, map->m_config);
return;
}
mp = map_create("static", NULL);
file_load(mp, fp);
fclose(fp);
if (map->m_handle != NULL) {
map_destroy(map->m_handle);
map->m_handle = NULL;
}
map->m_handle = mp;
log_info("info: Updated map \"%s\" from %s", map->m_name, map->m_config);
}
static void
map_file_close(void *hdl)
{
/* ignore */
}
static void *
map_file_lookup(void *hdl, const char *key, enum map_kind kind)
{
struct map *mp = hdl;
return map_lookup(mp->m_id, key, kind);
}
static int
map_file_compare(void *hdl, const char *key, enum map_kind kind,
int (*func)(const char *, const char *))
{
struct map *mp = hdl;
return map_compare(mp->m_id, key, kind, func);
}
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