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/* $OpenBSD: map_parser.c,v 1.6 2011/04/17 13:36:07 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 <ctype.h>
#include <event.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "smtpd.h"
#include "log.h"
struct map_parser *map_parser_lookup(enum map_kind);
static void *map_parse_secret(char *, char *, size_t);
static void *map_parse_alias(char *, char *, size_t);
static void *map_parse_virtual(char *, char *, size_t);
struct map_parser map_parsers[] = {
{ K_NONE, NULL },
{ K_ALIAS, map_parse_alias },
{ K_VIRTUAL, map_parse_virtual },
{ K_SECRET, map_parse_secret }
};
struct map_parser *
map_parser_lookup(enum map_kind kind)
{
u_int8_t i;
for (i = 0; i < nitems(map_parsers); ++i)
if (map_parsers[i].kind == kind)
break;
if (i == nitems(map_parsers))
fatalx("invalid map kind");
return &map_parsers[i];
}
static void *
map_parse_secret(char *key, char *line, size_t len)
{
struct map_secret *map_secret = NULL;
char *p;
/* credentials are stored as user:password */
if (len < 3)
return NULL;
/* too big to fit in a smtp session line */
if (len >= MAX_LINE_SIZE)
return NULL;
p = strchr(line, ':');
if (p == NULL)
return NULL;
if (p == line || p == line + len - 1)
return NULL;
*p++ = '\0';
map_secret = calloc(1, sizeof(struct map_secret));
if (map_secret == NULL)
fatalx("calloc");
if (strlcpy(map_secret->username, line,
sizeof(map_secret->username)) >=
sizeof(map_secret->username))
goto err;
if (strlcpy(map_secret->password, p,
sizeof(map_secret->password)) >=
sizeof(map_secret->password))
goto err;
return map_secret;
err:
free(map_secret);
return NULL;
}
static void *
map_parse_alias(char *key, char *line, size_t len)
{
char *subrcpt;
char *endp;
struct map_alias *map_alias = NULL;
struct expandnode expnode;
map_alias = calloc(1, sizeof(struct map_alias));
if (map_alias == NULL)
fatalx("calloc");
while ((subrcpt = strsep(&line, ",")) != NULL) {
/* subrcpt: strip initial whitespace. */
while (isspace((int)*subrcpt))
++subrcpt;
if (*subrcpt == '\0')
goto error;
/* subrcpt: strip trailing whitespace. */
endp = subrcpt + strlen(subrcpt) - 1;
while (subrcpt < endp && isspace((int)*endp))
*endp-- = '\0';
bzero(&expnode, sizeof (struct expandnode));
if (! alias_parse(&expnode, subrcpt))
goto error;
expandtree_increment_node(&map_alias->expandtree, &expnode);
map_alias->nbnodes++;
}
return map_alias;
error:
/* free elements in map_alias->expandtree */
expandtree_free_nodes(&map_alias->expandtree);
free(map_alias);
return NULL;
}
static void *
map_parse_virtual(char *key, char *line, size_t len)
{
char *subrcpt;
char *endp;
struct map_virtual *map_virtual = NULL;
struct expandnode expnode;
map_virtual = calloc(1, sizeof(struct map_virtual));
if (map_virtual == NULL)
fatalx("calloc");
/* domain key, discard value */
if (strchr(key, '@') == NULL)
return map_virtual;
while ((subrcpt = strsep(&line, ",")) != NULL) {
/* subrcpt: strip initial whitespace. */
while (isspace((int)*subrcpt))
++subrcpt;
if (*subrcpt == '\0')
goto error;
/* subrcpt: strip trailing whitespace. */
endp = subrcpt + strlen(subrcpt) - 1;
while (subrcpt < endp && isspace((int)*endp))
*endp-- = '\0';
bzero(&expnode, sizeof (struct expandnode));
if (! alias_parse(&expnode, subrcpt))
goto error;
expandtree_increment_node(&map_virtual->expandtree, &expnode);
map_virtual->nbnodes++;
}
return map_virtual;
error:
/* free elements in map_virtual->expandtree */
expandtree_free_nodes(&map_virtual->expandtree);
free(map_virtual);
return NULL;
}
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