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| Current File : //usr/src/sys/contrib/ngatm/netnatm/api/unisap.c |
/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
* Copyright (c) 2004
* Hartmut Brandt
*
* Author: Hartmut Brandt <harti@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Begemot: libunimsg/netnatm/api/unisap.c,v 1.4 2004/07/08 08:22:01 brandt Exp $
*/
#include <sys/types.h>
#ifdef _KERNEL
#include <sys/ctype.h>
#include <sys/libkern.h>
#else
#include <ctype.h>
#include <string.h>
#endif
#include <netnatm/msg/unistruct.h>
#include <netnatm/api/unisap.h>
int
unisve_check_addr(const struct unisve_addr *sve)
{
if (sve->tag == UNISVE_ABSENT)
return (UNISVE_OK);
if (sve->tag == UNISVE_ANY)
return (UNISVE_OK);
if (sve->tag != UNISVE_PRESENT)
return (UNISVE_ERROR_BAD_TAG);
if (sve->type == UNI_ADDR_INTERNATIONAL) {
if (sve->plan != UNI_ADDR_E164)
return (UNISVE_ERROR_TYPE_PLAN_CONFLICT);
if (sve->len == 0 || sve->len > 15)
return (UNISVE_ERROR_ADDR_LEN);
} else if (sve->type == UNI_ADDR_UNKNOWN) {
if (sve->plan != UNI_ADDR_ATME)
return (UNISVE_ERROR_TYPE_PLAN_CONFLICT);
if (sve->len != 19)
return (UNISVE_ERROR_ADDR_LEN);
} else
return (UNISVE_ERROR_BAD_ADDR_TYPE);
return (UNISVE_OK);
}
int
unisve_check_selector(const struct unisve_selector *sve)
{
if (sve->tag != UNISVE_PRESENT &&
sve->tag != UNISVE_ABSENT &&
sve->tag != UNISVE_ANY)
return (UNISVE_ERROR_BAD_TAG);
return (UNISVE_OK);
}
/*
* We don't want to check the protocol values here.
*/
int
unisve_check_blli_id2(const struct unisve_blli_id2 *sve)
{
if (sve->tag != UNISVE_PRESENT &&
sve->tag != UNISVE_ABSENT &&
sve->tag != UNISVE_ANY)
return (UNISVE_ERROR_BAD_TAG);
return (UNISVE_OK);
}
/*
* We don't want to check the protocol values here.
*/
int
unisve_check_blli_id3(const struct unisve_blli_id3 *sve)
{
if (sve->tag != UNISVE_PRESENT &&
sve->tag != UNISVE_ABSENT &&
sve->tag != UNISVE_ANY)
return (UNISVE_ERROR_BAD_TAG);
return (UNISVE_OK);
}
int
unisve_check_bhli(const struct unisve_bhli *sve)
{
if (sve->tag == UNISVE_ABSENT)
return (UNISVE_OK);
if (sve->tag == UNISVE_ANY)
return (UNISVE_OK);
if (sve->tag != UNISVE_PRESENT)
return (UNISVE_ERROR_BAD_TAG);
if (sve->type != UNI_BHLI_ISO &&
sve->type != UNI_BHLI_USER &&
sve->type != UNI_BHLI_VENDOR)
return (UNISVE_ERROR_BAD_BHLI_TYPE);
if (sve->len > sizeof(sve->info))
return (UNISVE_ERROR_BAD_BHLI_LEN);
return (UNISVE_OK);
}
int
unisve_check_sap(const struct uni_sap *sap)
{
int err;
if ((err = unisve_check_addr(&sap->addr)) != 0 ||
(err = unisve_check_selector(&sap->selector)) != 0 ||
(err = unisve_check_blli_id2(&sap->blli_id2)) != 0 ||
(err = unisve_check_blli_id3(&sap->blli_id3)) != 0 ||
(err = unisve_check_bhli(&sap->bhli)) != 0)
return (err);
if (sap->addr.plan == UNI_ADDR_E164) {
if (sap->selector.tag == UNISVE_PRESENT)
return (UNISVE_ERROR_ADDR_SEL_CONFLICT);
} else if (sap->addr.plan == UNI_ADDR_ATME) {
if (sap->selector.tag == UNISVE_ABSENT)
return (UNISVE_ERROR_ADDR_SEL_CONFLICT);
}
return (0);
}
#define COMMON_OVERLAP(A1,A2) \
if ((A1->tag == UNISVE_ABSENT && A2->tag == UNISVE_ABSENT) || \
A1->tag == UNISVE_ANY || A2->tag == UNISVE_ANY) \
return (1); \
if ((A1->tag == UNISVE_ABSENT && A2->tag == UNISVE_PRESENT) || \
(A2->tag == UNISVE_ABSENT && A1->tag == UNISVE_PRESENT)) \
return (0);
int
unisve_overlap_addr(const struct unisve_addr *s1, const struct unisve_addr *s2)
{
COMMON_OVERLAP(s1, s2);
return (s1->type == s2->type && s1->plan == s2->plan &&
s1->len == s2->len && memcmp(s1->addr, s2->addr, s1->len) == 0);
}
int
unisve_overlap_selector(const struct unisve_selector *s1,
const struct unisve_selector *s2)
{
COMMON_OVERLAP(s1, s2);
return (s1->selector == s2->selector);
}
int
unisve_overlap_blli_id2(const struct unisve_blli_id2 *s1,
const struct unisve_blli_id2 *s2)
{
COMMON_OVERLAP(s1, s2);
return (s1->proto == s2->proto &&
(s1->proto != UNI_BLLI_L2_USER || s1->user == s2->user));
}
int
unisve_overlap_blli_id3(const struct unisve_blli_id3 *s1,
const struct unisve_blli_id3 *s2)
{
COMMON_OVERLAP(s1, s2);
if (s1->proto != s2->proto)
return (0);
if (s1->proto == UNI_BLLI_L3_USER)
return (s1->user == s2->user);
if (s1->proto == UNI_BLLI_L3_TR9577) {
if (s1->noipi && s2->noipi)
return (1);
if (!s1->noipi && !s2->noipi) {
if (s1->ipi == s2->ipi) {
if (s1->ipi != UNI_BLLI_L3_SNAP)
return (1);
if (s1->oui == s2->oui && s1->pid == s2->pid)
return (1);
}
}
return (0);
}
return (1);
}
int
unisve_overlap_bhli(const struct unisve_bhli *s1, const struct unisve_bhli *s2)
{
COMMON_OVERLAP(s1, s2);
return (s1->type == s2->type && s1->len == s2->len &&
memcmp(s1->info, s2->info, s1->len) == 0);
}
int
unisve_overlap_sap(const struct uni_sap *s1, const struct uni_sap *s2)
{
int any1, any2;
/*
* Two catch-all's SAP's are not allowed. A catch-all does never
* overlap with a non-catch all SAP.
*/
any1 = unisve_is_catchall(s1);
any2 = unisve_is_catchall(s2);
if (any1 && any2)
return (1);
if(any1 || any2)
return (0);
return (unisve_overlap_addr(&s1->addr, &s2->addr) &&
unisve_overlap_selector(&s1->selector, &s2->selector) &&
unisve_overlap_blli_id2(&s1->blli_id2, &s2->blli_id2) &&
unisve_overlap_blli_id3(&s1->blli_id3, &s2->blli_id3) &&
unisve_overlap_bhli(&s1->bhli, &s2->bhli));
}
int
unisve_is_catchall(const struct uni_sap *sap)
{
return (sap->addr.tag == UNISVE_ANY &&
sap->selector.tag == UNISVE_ANY &&
sap->blli_id2.tag == UNISVE_ANY &&
sap->blli_id3.tag == UNISVE_ANY &&
sap->bhli.tag == UNISVE_ANY);
}
int
unisve_match(const struct uni_sap *sap, const struct uni_ie_called *called,
const struct uni_ie_blli *blli, const struct uni_ie_bhli *bhli)
{
switch (sap->addr.tag) {
case UNISVE_ABSENT:
if (IE_ISGOOD(*called))
return (0);
break;
case UNISVE_ANY:
break;
case UNISVE_PRESENT:
if (!IE_ISGOOD(*called))
return (0);
if (called->addr.type != sap->addr.type ||
called->addr.plan != sap->addr.plan)
return (0);
if (called->addr.plan == UNI_ADDR_E164) {
if (called->addr.len != sap->addr.len ||
memcmp(called->addr.addr, sap->addr.addr,
called->addr.len) != 0)
return (0);
} else if (called->addr.plan == UNI_ADDR_ATME) {
if (called->addr.len != 20 ||
memcmp(called->addr.addr, sap->addr.addr, 19) != 0)
return (0);
}
break;
default:
return (0);
}
switch (sap->selector.tag) {
case UNISVE_ABSENT:
if (IE_ISGOOD(*called) && called->addr.plan == UNI_ADDR_ATME)
return (0);
break;
case UNISVE_ANY:
break;
case UNISVE_PRESENT:
if (!IE_ISGOOD(*called))
return (0);
if (called->addr.plan != UNI_ADDR_ATME)
return (0);
if (called->addr.addr[19] != sap->selector.selector)
return (0);
break;
default:
return (0);
}
switch (sap->blli_id2.tag) {
case UNISVE_ABSENT:
if (IE_ISGOOD(*blli) && (blli->h.present & UNI_BLLI_L2_P))
return (0);
break;
case UNISVE_ANY:
break;
case UNISVE_PRESENT:
if (!IE_ISGOOD(*blli) || (blli->h.present & UNI_BLLI_L2_P) == 0)
return (0);
if (blli->l2 != sap->blli_id2.proto)
return (0);
if (blli->l2 == UNI_BLLI_L2_USER) {
if ((blli->h.present & UNI_BLLI_L2_USER_P) == 0)
return (0);
if (blli->l2_user != sap->blli_id2.user)
return (0);
}
break;
default:
return (0);
}
switch (sap->blli_id3.tag) {
case UNISVE_ABSENT:
if (IE_ISGOOD(*blli) && (blli->h.present & UNI_BLLI_L3_P))
return (0);
break;
case UNISVE_ANY:
break;
case UNISVE_PRESENT:
if (!IE_ISGOOD(*blli) || (blli->h.present & UNI_BLLI_L3_P) == 0)
return (0);
if (blli->l3 != sap->blli_id3.proto)
return (0);
if (blli->l3 == UNI_BLLI_L3_USER) {
if ((blli->h.present & UNI_BLLI_L3_USER_P) == 0)
return (0);
if (blli->l3_user != sap->blli_id3.user)
return (0);
break;
}
if (blli->l3 == UNI_BLLI_L3_TR9577) {
if (sap->blli_id3.noipi) {
if (blli->h.present & UNI_BLLI_L3_IPI_P)
return (0);
} else {
if (!(blli->h.present & UNI_BLLI_L3_IPI_P))
return (0);
if (blli->l3_ipi != sap->blli_id3.ipi)
return (0);
if (blli->l3_ipi == UNI_BLLI_L3_SNAP) {
if (!(blli->h.present &
UNI_BLLI_L3_SNAP_P))
return (0);
if (blli->oui != sap->blli_id3.oui ||
blli->pid != sap->blli_id3.pid)
return (0);
}
}
}
break;
default:
return (0);
}
switch (sap->bhli.tag) {
case UNISVE_ABSENT:
if (IE_ISGOOD(*bhli))
return (0);
break;
case UNISVE_ANY:
break;
case UNISVE_PRESENT:
if (!IE_ISGOOD(*bhli))
return (0);
if (sap->bhli.type != bhli->type)
return (0);
if (sap->bhli.len != bhli->len)
return (0);
if (memcmp(sap->bhli.info, bhli->info, bhli->len) != 0)
return (0);
break;
default:
return (0);
}
/* Uff */
return (1);
}