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81 lines
2.3 KiB
81 lines
2.3 KiB
/*
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* Digest Authentication Module
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*
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* one-time nonce support
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*
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* Copyright (C) 2008 iptelorg GmbH
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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/*
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* Defines:
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* USE_OT_NONCE - if not defined no one-time nonce specific code will be
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* compiled
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* OTN_CELL_T_LONG - uses unsigned long instead os unsigned int for the
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* array cells
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*/
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#ifndef _ot_nonce_h
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#define _ot_nonce_h
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extern int otn_enabled;
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/* instead of storing only the 2^k size we store also k
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* for faster operations */
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extern unsigned otn_in_flight_k; /* maximum in-flight nonces (k in 2^k) */
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extern unsigned otn_in_flight_no ; /* 2^k == 1<<otn_in_flight_no */
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#ifdef USE_OT_NONCE
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#include "nid.h" /* nid_t */
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#include "../../atomic_ops.h"
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/* default number of maximum in-flight nonces */
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#define DEFAULT_OTN_IN_FLIGHT (1024*1024U) /* 1M nonces => 128k mem. */
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#define MIN_OTN_IN_FLIGHT (128*1024U) /* warn if < then 128k nonces */
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#define MAX_OTN_IN_FLIGHT (2*1024*1024*1024U) /* warn if size > 250Mb */
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#define MIN_OTN_PARTITION 65536U /* warn if < 65k nonces per partition*/
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#ifdef OTN_CELL_T_LONG
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typedef unsigned long otn_cell_t;
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#else
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typedef unsigned int otn_cell_t;
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#endif
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int init_ot_nonce();
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void destroy_ot_nonce();
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enum otn_check_ret{
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OTN_OK=0, OTN_INV_POOL=-1, OTN_ID_OVERFLOW=-2, OTN_REPLAY=-3
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};
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/* check if nonce w/ index i is valid & expected and record receiving it */
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enum otn_check_ret otn_check_id(nid_t i, unsigned pool);
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/* re-init the stored nonce state for nonce id in pool pool_no */
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nid_t otn_new(nid_t id, unsigned char pool_no);
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#endif /* USE_OT_NONCE */
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#endif /* _ot_nonce_h */
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