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/*
* This file is part of libESMTP, a library for submission of RFC 2822
* formatted electronic mail messages using the SMTP protocol described
* in RFC 2821.
*
* Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include "auth-client.h"
#include "auth-plugin.h"
#define NELT(x) (sizeof x / sizeof x[0])
static int plain_init (void *pctx);
static void plain_destroy (void *ctx);
static const char *plain_response (void *ctx, const char *challenge, int *len,
auth_interact_t interact, void *arg);
const struct auth_client_plugin sasl_client =
{
/* Plugin information */
"PLAIN",
"PLAIN mechanism (RFC 2595 section 6)",
/* Plugin instance */
plain_init,
plain_destroy,
/* Authentication */
plain_response,
AUTH_PLUGIN_PLAIN,
/* Security Layer */
0,
NULL,
NULL,
};
static const struct auth_client_request client_request[] =
{
{ "user", AUTH_CLEARTEXT | AUTH_USER, "User Name", 255, },
{ "passphrase", AUTH_CLEARTEXT | AUTH_PASS, "Pass Phrase", 255, },
};
struct plain_context
{
int state;
char buf[2 * 255 + 3];
};
static int
plain_init (void *pctx)
{
struct plain_context *plain;
plain = malloc (sizeof (struct plain_context));
memset (plain, 0, sizeof (struct plain_context));
*(void **) pctx = plain;
return 1;
}
static void
plain_destroy (void *ctx)
{
struct plain_context *plain = ctx;
memset (plain->buf, '\0', sizeof plain->buf);
free (plain);
}
static const char *
plain_response (void *ctx, const char *challenge __attribute__ ((unused)),
int *len, auth_interact_t interact, void *arg)
{
struct plain_context *plain = ctx;
char *result[NELT (client_request)];
switch (plain->state)
{
case 0:
if (!(*interact) (client_request, result, NELT (client_request), arg))
break;
strcpy (plain->buf + 1, result[0]);
strcpy (plain->buf + strlen (result[0]) + 2, result[1]);
*len = strlen (result[0]) + strlen (result[1]) + 2;
plain->state = -1;
return plain->buf;
}
*len = 0;
return NULL;
}
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