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#ifndef _auth_client_h
#define _auth_client_h
/*
* 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 __cplusplus
extern "C" {
#endif
/* Someday this will expand into a standalone SASL library. For now the
application must use the remainder of the SASL implementation's API
to set things up before calling smtp_start_session(). */
typedef struct auth_context *auth_context_t;
/* These flags are set for standard user authentication info */
#define AUTH_USER 0x0001
#define AUTH_REALM 0x0002
#define AUTH_PASS 0x0004
/* This flag is set for information passed in clear text on the wire */
#define AUTH_CLEARTEXT 0x0008
struct auth_client_request
{
const char *name; /* Name of field requested from the application,
e.g. "user", "passphrase" "realm" etc. */
unsigned flags; /* Alternative version of above */
const char *prompt; /* Text that the application can use to prompt
for input. */
unsigned size; /* Maximum length of response allowed. 0 == no limit */
};
typedef const struct auth_client_request *auth_client_request_t;
typedef int (*auth_interact_t) (auth_client_request_t request,
char **result, int fields, void *arg);
typedef const char *(*auth_response_t) (void *ctx,
const char *challenge, int *len,
auth_interact_t interact, void *arg);
typedef int (*auth_recode_t) (void *ctx, char **dstbuf, int *dstlen,
const char *srcbuf, int srclen);
/* For enabling mechanisms */
#define AUTH_PLUGIN_ANONYMOUS 0x01 /* mechanism is anonymous */
#define AUTH_PLUGIN_PLAIN 0x02 /* mechanism uses plaintext passwords */
#define AUTH_PLUGIN_EXTERNAL 0x04 /* mechanism is EXTERNAL */
void auth_client_init(void);
void auth_client_exit(void);
auth_context_t auth_create_context(void);
int auth_destroy_context(auth_context_t context);
int auth_set_mechanism_flags (auth_context_t context,
unsigned set, unsigned clear);
int auth_set_mechanism_ssf (auth_context_t context, int min_ssf);
int auth_set_interact_cb (auth_context_t context,
auth_interact_t interact, void *arg);
int auth_client_enabled(auth_context_t context);
int auth_set_mechanism(auth_context_t context, const char *name);
const char *auth_mechanism_name (auth_context_t context);
const char *auth_response(auth_context_t context, const char *challenge, int *len);
int auth_get_ssf(auth_context_t context);
void auth_encode(char **dstbuf, int *dstlen, const char *srcbuf, int srclen, void *arg);
void auth_decode(char **dstbuf, int *dstlen, const char *srcbuf, int srclen, void *arg);
int auth_set_external_id (auth_context_t context, const char *identity);
#ifdef __cplusplus
};
#endif
#endif
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