auth.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2004, 2005 Free Software Foundation, Inc.
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 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <mailutils/errno.h>
#include <auth0.h>
static int
_authenticate_null (authority_t auth ARG_UNUSED)
{
return 0;
}
int
authority_create_null (authority_t *pauthority, void *owner)
{
int rc = authority_create(pauthority, NULL, owner);
if (rc)
return rc;
authority_set_authenticate (*pauthority, _authenticate_null, owner);
return 0;
}
int
authority_create (authority_t *pauthority, ticket_t ticket, void *owner)
{
authority_t authority;
if (pauthority == NULL)
return MU_ERR_OUT_PTR_NULL;
authority = calloc (1, sizeof (*authority));
if (authority == NULL)
return ENOMEM;
authority->ticket = ticket;
authority->owner = owner;
*pauthority = authority;
return 0;
}
void
authority_destroy (authority_t *pauthority, void *owner)
{
if (pauthority && *pauthority)
{
authority_t authority = *pauthority;
if (authority->owner == owner)
{
ticket_destroy (&(authority->ticket), authority);
free (authority);
}
*pauthority = NULL;
}
}
void *
authority_get_owner (authority_t authority)
{
return (authority) ? authority->owner : NULL;
}
int
authority_set_ticket (authority_t authority, ticket_t ticket)
{
if (authority == NULL)
return EINVAL;
if (authority->ticket)
ticket_destroy (&(authority->ticket), authority);
authority->ticket = ticket;
return 0;
}
int
authority_get_ticket (authority_t authority, ticket_t *pticket)
{
if (authority == NULL)
return EINVAL;
if (pticket == NULL)
return MU_ERR_OUT_PTR_NULL;
if (authority->ticket == NULL)
{
int status = ticket_create (&(authority->ticket), authority);
if (status != 0)
return status;
}
*pticket = authority->ticket;
return 0;
}
struct auth_cb
{
int status;
authority_t authority;
};
static int
try_auth (void *item, void *data)
{
int (*authenticate) (authority_t) = item;
struct auth_cb *cb = data;
if (authenticate (cb->authority) == 0)
{
cb->status = 0;
return 1;
}
return 0;
}
int
authority_authenticate (authority_t authority)
{
if (authority && authority->auth_methods)
{
struct auth_cb cb;
cb.status = MU_ERR_AUTH_FAILURE;
cb.authority = authority;
list_do (authority->auth_methods, try_auth, &cb);
return cb.status;
}
return EINVAL;
}
int
authority_set_authenticate (authority_t authority,
int (*_authenticate) (authority_t),
void *owner)
{
if (authority == NULL)
return EINVAL;
if (authority->owner != owner)
return EACCES;
if (!authority->auth_methods)
{
int rc = list_create (&authority->auth_methods);
if (rc)
return rc;
}
list_append (authority->auth_methods, _authenticate);
return 0;
}