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/* =================================================================

 *

 *      auth.h

 *

 *      Improved HTTPD server.

 *

 * =================================================================

 * ####ECOSGPLCOPYRIGHTBEGIN####

 * -------------------------------------------

 * This file is part of eCos, the Embedded Configurable Operating System.

 * Copyright (C) 2005 Free Software Foundation, Inc.

 *

 * eCos 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 or (at your option) any later

 * version.

 *

 * eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,

 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 *

 * As a special exception, if other files instantiate templates or use

 * macros or inline functions from this file, or you compile this file

 * and link it with other works to produce a work based on this file,

 * this file does not by itself cause the resulting work to be covered by

 * the GNU General Public License. However the source code for this file

 * must still be made available in accordance with section (3) of the GNU

 * General Public License v2.

 *

 * This exception does not invalidate any other reasons why a work based

 * on this file might be covered by the GNU General Public License.

 * -------------------------------------------

 * ####ECOSGPLCOPYRIGHTEND####

 * =================================================================

 * #####DESCRIPTIONBEGIN####

 *

 *  Author(s):    Anthony Tonizzo (atonizzo@gmail.com)

 *  Contributors:

 *  Date:         2006-06-12

 *  Purpose:

 *  Description:

 *

 * ####DESCRIPTIONEND####

 *

 * =================================================================

 */

#ifndef __AUTH_H__

#define __AUTH_H__

#include <pkgconf/system.h>

#include <pkgconf/isoinfra.h>

#include <cyg/hal/hal_tables.h>

#define badchar(c,p) (!(p = memchr(b64string, c, 64)))

extern cyg_uint8 *cyg_httpd_current_authName;

typedef enum cyg_httpd_auth_type

{

    CYG_HTTPD_AUTH_BASIC = 0,

    CYG_HTTPD_AUTH_DIGEST = 1

} cyg_httpd_auth_type;

#define AUTH_STORAGE_BUFFER_LENGTH_LOGIN             32

#define AUTH_STORAGE_BUFFER_LENGTH_PASSWORD          32

#define AUTH_STORAGE_BUFFER_LENGTH        (AUTH_STORAGE_BUFFER_LENGTH_LOGIN +\

                                           AUTH_STORAGE_BUFFER_LENGTH_PASSWORD)

// It must be stressed that the auth_dirname field is the directory name

//  that will be requested by the web server, and _not_ the absolute name

//  in the eCos file system. 

// Lets' make an example. Let's say that the files of your web site reside in 

//  the directory '/fs/jffs2/html'. Your CYG_HTTPD_DEFAULT_PATH will likely be

//  set to '/fs/jffs2/' and the CYG_HTTPD_DEFAULT_HTML_DIR will likely be

//  set to 'html/'. The web server will then request a file 

//  (i.e. 'images/foo.jpg') whose absolute location in the eCos file system is

//  '/fs/jffs2/html/images/foo.jpg', and if we want to protect the 'images/'

//  directory with some kind of authentication, the auth_dirname must be 

//  pointing to a string such as "images/".

struct cyg_httpd_auth_table_entry

{

    char                *auth_dirname;

    char                *auth_domainname;

    char                *auth_username;

    char                *auth_password;

    cyg_httpd_auth_type  auth_mode;

} CYG_HAL_TABLE_TYPE;

typedef struct cyg_httpd_auth_table_entry cyg_httpd_auth_table_entry;

#define CYG_HTTPD_AUTH_TABLE_ENTRY( __name, __path, __domain, __un, __pw, __mode )  \

 cyg_httpd_auth_table_entry __name CYG_HAL_TABLE_ENTRY( httpd_auth_table ) =  \

                             { __path, __domain, __un, __pw, __mode }

cyg_httpd_auth_table_entry* cyg_httpd_auth_entry_from_path(char *);

cyg_httpd_auth_table_entry* cyg_httpd_auth_entry_from_domain(char *);

cyg_httpd_auth_table_entry* cyg_httpd_is_authenticated(char*);

char* cyg_httpd_digest_data(char *, char *);

char* cyg_httpd_digest_skip(char *);

// The following code is a slightly modified version of those available at the

//  end of RFC1270.

#define HASHLEN 16

typedef char HASH[HASHLEN];

#define HASHHEXLEN 32

typedef char HASHHEX[HASHHEXLEN+1];

//extern char cyg_httpd_md5_username[];

//extern char cyg_httpd_md5_opaque[];

//extern char cyg_httpd_md5_alg[];

//extern char cyg_httpd_md5_realm[];

extern char cyg_httpd_md5_nonce[];

extern char cyg_httpd_md5_cnonce[];

extern char cyg_httpd_md5_digest[];

extern char cyg_httpd_md5_qop[];

extern char cyg_httpd_md5_response[];

extern char cyg_httpd_md5_noncecount[];

extern char cyg_httpd_md5_ha2[];

extern char cyg_httpd_md5_ha1[];

#endif // __AUTH_H__