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skarg
2005-03-10 01:17:31 +00:00
parent 3db7414ff8
commit 9abde620f5
3 changed files with 282 additions and 0 deletions
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bacnet-stack/whois.c
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/*####COPYRIGHTBEGIN####
-------------------------------------------
Copyright (C) 2005 Steve Karg
This program 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
of the License, or (at your option) any later version.
This program 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 this program; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, 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.
This exception does not invalidate any other reasons why a work
based on this file might be covered by the GNU General Public
License.
-------------------------------------------
####COPYRIGHTEND####*/
#include <stdint.h>
#include "bacenum.h"
#include "bacdcode.h"
#include "bacdef.h"
// encode I-Am service - use -1 for limit if you want unlimited
int whois_encode_apdu(
uint8_t *apdu,
int32_t low_limit,
int32_t high_limit)
{
int len = 0; // length of each encoding
int apdu_len = 0; // total length of the apdu, return value
if (apdu) {
apdu[0] = PDU_TYPE_UNCONFIRMED_SERVICE_REQUEST;
apdu[1] = SERVICE_UNCONFIRMED_WHO_IS; // service choice
apdu_len = 2;
// optional limits - must be used as a pair
if ((low_limit >= 0) && (low_limit <= BACNET_MAX_INSTANCE) &&
(high_limit >= 0) && (high_limit <= BACNET_MAX_INSTANCE))
{
len = encode_tagged_unsigned(
&apdu[apdu_len],
low_limit);
apdu_len += len;
len = encode_tagged_unsigned(
&apdu[apdu_len],
high_limit);
apdu_len += len;
}
}
return apdu_len;
}
int whois_decode_apdu(
uint8_t *apdu,
unsigned apdu_len,
int32_t *pLow_limit,
int32_t *pHigh_limit)
{
int len = 0;
uint8_t tag_number = 0;
uint32_t len_value = 0;
unsigned int decoded_value = 0;
if (!apdu)
return -1;
// optional checking - most likely was already done prior to this call
if (apdu[0] != PDU_TYPE_UNCONFIRMED_SERVICE_REQUEST)
return -1;
if (apdu[1] != SERVICE_UNCONFIRMED_WHO_IS)
return -1;
// optional limits - must be used as a pair
if (apdu_len > 2)
{
len = 2;
len += decode_tag_number_and_value(&apdu[len], &tag_number, &len_value);
if (tag_number != BACNET_APPLICATION_TAG_UNSIGNED_INT)
return -1;
len += decode_unsigned(&apdu[len], len_value, &decoded_value);
if ((decoded_value >= 0) && (decoded_value <= BACNET_MAX_INSTANCE))
{
if (pLow_limit)
*pLow_limit = decoded_value;
}
len += decode_tag_number_and_value(&apdu[len], &tag_number, &len_value);
if (tag_number != BACNET_APPLICATION_TAG_UNSIGNED_INT)
return -1;
len += decode_unsigned(&apdu[len], len_value, &decoded_value);
if ((decoded_value >= 0) && (decoded_value <= BACNET_MAX_INSTANCE))
{
if (pHigh_limit)
*pHigh_limit = decoded_value;
}
}
return len;
}
#ifdef TEST
#include <assert.h>
#include <string.h>
#include "ctest.h"
void testWhoIs(Test * pTest)
{
uint8_t apdu[480] = {0};
int len = 0;
int apdu_len = 0;
int32_t low_limit = -1;
int32_t high_limit = -1;
int32_t test_low_limit = -1;
int32_t test_high_limit = -1;
len = whois_encode_apdu(
&apdu[0],
low_limit,
high_limit);
ct_test(pTest, len != 0);
apdu_len = len;
len = whois_decode_apdu(
&apdu[0],
apdu_len,
&test_low_limit,
&test_high_limit);
ct_test(pTest, len != -1);
ct_test(pTest, test_low_limit == low_limit);
ct_test(pTest, test_high_limit == high_limit);
for (
low_limit = 0;
low_limit <= BACNET_MAX_INSTANCE;
low_limit += (BACNET_MAX_INSTANCE/4))
{
for (
high_limit = 0;
high_limit <= BACNET_MAX_INSTANCE;
high_limit += (BACNET_MAX_INSTANCE/4))
{
len = whois_encode_apdu(
&apdu[0],
low_limit,
high_limit);
apdu_len = len;
ct_test(pTest, len != 0);
len = whois_decode_apdu(
&apdu[0],
apdu_len,
&test_low_limit,
&test_high_limit);
ct_test(pTest, len != -1);
ct_test(pTest, test_low_limit == low_limit);
ct_test(pTest, test_high_limit == high_limit);
}
}
}
#ifdef TEST_WHOIS
int main(void)
{
Test *pTest;
bool rc;
pTest = ct_create("BACnet Who-Is", NULL);
/* individual tests */
rc = ct_addTestFunction(pTest, testWhoIs);
assert(rc);
ct_setStream(pTest, stdout);
ct_run(pTest);
(void) ct_report(pTest);
ct_destroy(pTest);
return 0;
}
#endif /* TEST_WHOIS */
#endif /* TEST */
bacnet-stack/whois.h
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/*####COPYRIGHTBEGIN####
-------------------------------------------
Copyright (C) 2004 Steve Karg
This program 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
of the License, or (at your option) any later version.
This program 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 this program; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, 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.
This exception does not invalidate any other reasons why a work
based on this file might be covered by the GNU General Public
License.
-------------------------------------------
####COPYRIGHTEND####*/
#ifndef WHOIS_H
#define WHOIS_H
#include <stdint.h>
#include <stdbool.h>
// encode I-Am service - use -1 for limit if you want unlimited
int whois_encode_apdu(
uint8_t *apdu,
int32_t low_limit,
int32_t high_limit);
int whois_decode_apdu(
uint8_t *apdu,
unsigned apdu_len,
int32_t *pLow_limit,
int32_t *pHigh_limit);
#ifdef TEST
void testWhoIs(Test * pTest);
#endif
#endif
bacnet-stack/whois.mak
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#Makefile to build test case
CC = gcc
BASEDIR = .
#CFLAGS = -Wall -I.
# -g for debugging with gdb
#CFLAGS = -Wall -I. -g
CFLAGS = -Wall -I. -Itest -DTEST -DTEST_WHOIS -g
SRCS = bacdcode.c \
bigend.c \
whois.c \
test/ctest.c
OBJS = ${SRCS:.c=.o}
TARGET = whois
all: ${TARGET}
${TARGET}: ${OBJS}
${CC} -o $@ ${OBJS}
.c.o:
${CC} -c ${CFLAGS} $*.c -o $@
depend:
rm -f .depend
${CC} -MM ${CFLAGS} *.c >> .depend
clean:
rm -rf core ${TARGET} $(OBJS) *.bak *.1 *.ini
include: .depend