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/*
* Copyright (C) 1996-8 Michael R. Elkins <me@mutt.org>
* Copyright (C) 1996-9 Brandon Long <blong@fiction.net>
* Copyright (C) 1999-2001 Brendan Cully <brendan@kublai.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*/
/* IMAP login/authentication code */
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include "mutt.h"
#include "imap_private.h"
#include "auth.h"
static imap_auth_t imap_authenticators[] = {
#ifdef USE_SASL
{ imap_auth_sasl, NULL },
#else
{ imap_auth_anon, "anonymous" },
#endif
#ifdef USE_GSS
{ imap_auth_gss, "gssapi" },
#endif
/* SASL includes CRAM-MD5 (and GSSAPI, but that's not enabled by default) */
#ifndef USE_SASL
{ imap_auth_cram_md5, "cram-md5" },
#endif
{ imap_auth_login, "login" },
{ NULL }
};
/* imap_authenticate: Attempt to authenticate using either user-specified
* authentication method if specified, or any. */
int imap_authenticate (IMAP_DATA* idata)
{
imap_auth_t* authenticator;
char* methods;
char* method;
char* delim;
int r = -1;
if (ImapAuthenticators && *ImapAuthenticators)
{
/* Try user-specified list of authentication methods */
methods = safe_strdup (ImapAuthenticators);
for (method = methods; method; method = delim)
{
delim = strchr (method, ':');
if (delim)
*delim++ = '\0';
if (! method[0])
continue;
dprint (2, (debugfile, "imap_authenticate: Trying method %s\n", method));
authenticator = imap_authenticators;
while (authenticator->authenticate)
{
if (!authenticator->method ||
!ascii_strcasecmp (authenticator->method, method))
if ((r = authenticator->authenticate (idata, method)) !=
IMAP_AUTH_UNAVAIL)
{
FREE (&methods);
return r;
}
authenticator++;
}
}
FREE (&methods);
}
else
{
/* Fall back to default: any authenticator */
dprint (2, (debugfile, "imap_authenticate: Using any available method.\n"));
authenticator = imap_authenticators;
while (authenticator->authenticate)
{
if ((r = authenticator->authenticate (idata, NULL)) != IMAP_AUTH_UNAVAIL)
return r;
authenticator++;
}
}
if (r == IMAP_AUTH_UNAVAIL)
{
mutt_error (_("No authenticators available"));
mutt_sleep (1);
}
return r;
}
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