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/* $OpenBSD: map_backend.c,v 1.4 2010/11/28 14:35:58 gilles Exp $ */
/*
* Copyright (c) 2010 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 <db.h>
#include <ctype.h>
#include <err.h>
#include <event.h>
#include <fcntl.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);
/* db(3) backend */
void *map_db_open(char *);
void map_db_close(void *);
char *map_db_get(void *, char *, size_t *);
int map_db_put(void *, char *, char *);
/* stdio(3) backend */
void *map_stdio_open(char *);
void map_stdio_close(void *);
char *map_stdio_get(void *, char *, size_t *);
int map_stdio_put(void *, char *, char *);
struct map_backend map_backends[] = {
{ S_DB,
map_db_open, map_db_close, map_db_get, map_db_put },
{ S_PLAIN,
map_stdio_open, map_stdio_close, map_stdio_get, map_stdio_put },
};
struct map_backend *
map_backend_lookup(enum map_src source)
{
u_int8_t i;
for (i = 0; i < nitems(map_backends); ++i)
if (map_backends[i].source == source)
break;
if (i == nitems(map_backends))
fatalx("invalid map type");
return &map_backends[i];
}
/* db(3) backend */
void *
map_db_open(char *src)
{
return dbopen(src, O_RDONLY, 0600, DB_HASH, NULL);
}
void
map_db_close(void *hdl)
{
DB *db = hdl;
db->close(db);
}
char *
map_db_get(void *hdl, char *key, size_t *len)
{
int ret;
DBT dbk;
DBT dbv;
DB *db = hdl;
char *result = NULL;
dbk.data = key;
dbk.size = strlen(dbk.data) + 1;
if ((ret = db->get(db, &dbk, &dbv, 0)) != 0)
return NULL;
result = calloc(dbv.size, 1);
if (result == NULL)
fatal("calloc");
(void)strlcpy(result, dbv.data, dbv.size);
*len = dbv.size;
return result;
}
int
map_db_put(void *hdl, char *key, char *val)
{
return 0;
}
/* stdio(3) backend */
void *
map_stdio_open(char *src)
{
return fopen(src, "r");
}
void
map_stdio_close(void *hdl)
{
FILE *fp = hdl;
fclose(fp);
}
char *
map_stdio_get(void *hdl, char *key, size_t *len)
{
char *buf, *lbuf;
size_t flen;
char *keyp;
char *valp;
FILE *fp = hdl;
char *result = NULL;
lbuf = NULL;
while ((buf = fgetln(fp, &flen))) {
if (buf[flen - 1] == '\n')
buf[flen - 1] = '\0';
else {
if ((lbuf = malloc(flen + 1)) == NULL)
err(1, NULL);
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 == NULL || valp == keyp)
continue;
if (strcmp(keyp, key) != 0)
continue;
result = strdup(valp);
if (result == NULL)
err(1, NULL);
*len = strlen(result);
break;
}
free(lbuf);
return result;
}
int
map_stdio_put(void *hdl, char *key, char *val)
{
return 0;
}
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