acl/lib_tls/tls/tls_level.c

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2014-11-19 00:25:21 +08:00
/*++
* NAME
* tls_level 3
* SUMMARY
* TLS security level conversion
* SYNOPSIS
* #include <tls.h>
*
* int tls_level_lookup(name)
* const char *name;
*
* const char *str_tls_level(level)
* int level;
* DESCRIPTION
* The macros in this module convert TLS levels from symbolic
* name to internal form and vice versa. The macros are safe
* because they evaluate their arguments only once.
*
* tls_level_lookup() converts a TLS level from symbolic name
* to internal form. When an unknown level is specified,
* tls_level_lookup() logs no warning, and returns TLS_LEV_INVALID.
*
* str_tls_level() converts a TLS level from internal form to
* symbolic name. The result is a null pointer for an unknown
* level.
* SEE ALSO
* name_code(3) name to number mapping
* LICENSE
* .ad
* .fi
* The Secure Mailer license must be distributed with this software.
* AUTHOR(S)
* Wietse Venema
* IBM T.J. Watson Research
* P.O. Box 704
* Yorktown Heights, NY 10598, USA
*
* Victor Duchovni
* Morgan Stanley
*--*/
#include "StdAfx.h"
#ifdef USE_TLS
/* Utility library. */
#include "../util/name_code.h"
/* TLS library. */
#include "tls_private.h"
/* Application-specific. */
/*
* Order is critical:
*
* Levels > "encrypt" are expected to match a peer certificate.
*
* Levels >= "verify" are expected to require a valid CA trust-chain
*
* This forces "fingerprint" between "encrypt" and "verify".
*/
const NAME_CODE tls_level_table[] = {
{ "none", TLS_LEV_NONE },
{ "may", TLS_LEV_MAY },
{ "encrypt", TLS_LEV_ENCRYPT },
{ "fingerprint", TLS_LEV_FPRINT },
{ "verify", TLS_LEV_VERIFY },
{ "secure", TLS_LEV_SECURE },
{ 0, TLS_LEV_INVALID },
};
#endif