tbrennan3
352 lines
10 KiB
C
352 lines
10 KiB
C
/*####COPYRIGHTBEGIN####
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-------------------------------------------
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Copyright (C) 2008 John Minack
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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The Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA.
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As a special exception, if other files instantiate templates or
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use macros or inline functions from this file, or you compile
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this file and link it with other works to produce a work based
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on this file, this file does not by itself cause the resulting
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work to be covered by the GNU General Public License. However
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the source code for this file must still be made available in
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accordance with section (3) of the GNU General Public License.
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This exception does not invalidate any other reasons why a work
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based on this file might be covered by the GNU General Public
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License.
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-------------------------------------------
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####COPYRIGHTEND####*/
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#include "assert.h"
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#include "timestamp.h"
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/** @file timestamp.c Encode/Decode BACnet Timestamps */
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void bacapp_timestamp_copy(
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BACNET_TIMESTAMP * dest,
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BACNET_TIMESTAMP * src)
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{
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if (dest && src) {
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dest->tag = src->tag;
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switch (src->tag) {
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case TIME_STAMP_TIME:
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datetime_copy_time(&dest->value.time, &src->value.time);
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break;
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case TIME_STAMP_SEQUENCE:
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dest->value.sequenceNum = src->value.sequenceNum;
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break;
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case TIME_STAMP_DATETIME:
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datetime_copy(&dest->value.dateTime, &src->value.dateTime);
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break;
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default:
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break;
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}
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}
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}
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int bacapp_encode_timestamp(
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uint8_t * apdu,
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BACNET_TIMESTAMP * value)
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{
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int len = 0; /* length of each encoding */
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if (value && apdu) {
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switch (value->tag) {
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case TIME_STAMP_TIME:
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len = encode_context_time(&apdu[0], 0, &value->value.time);
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break;
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case TIME_STAMP_SEQUENCE:
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len =
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encode_context_unsigned(&apdu[0], 1,
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value->value.sequenceNum);
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break;
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case TIME_STAMP_DATETIME:
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len =
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bacapp_encode_context_datetime(&apdu[0], 2,
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&value->value.dateTime);
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break;
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default:
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len = 0;
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assert(0);
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break;
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}
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}
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return len;
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}
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int bacapp_encode_context_timestamp(
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uint8_t * apdu,
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uint8_t tag_number,
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BACNET_TIMESTAMP * value)
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{
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int len = 0; /* length of each encoding */
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int apdu_len = 0;
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if (value && apdu) {
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len = encode_opening_tag(&apdu[apdu_len], tag_number);
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apdu_len += len;
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len = bacapp_encode_timestamp(&apdu[apdu_len], value);
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apdu_len += len;
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len = encode_closing_tag(&apdu[apdu_len], tag_number);
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apdu_len += len;
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}
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return apdu_len;
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}
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int bacapp_decode_timestamp(
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uint8_t * apdu,
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BACNET_TIMESTAMP * value)
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{
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int len = 0;
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int section_len;
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uint32_t len_value_type;
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uint32_t sequenceNum;
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if (apdu) {
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section_len =
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decode_tag_number_and_value(&apdu[len], &value->tag,
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&len_value_type);
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if (-1 == section_len) {
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return -1;
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}
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switch (value->tag) {
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case TIME_STAMP_TIME:
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if ((section_len =
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decode_context_bacnet_time(&apdu[len], TIME_STAMP_TIME,
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&value->value.time)) == -1) {
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return -1;
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} else {
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len += section_len;
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}
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break;
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case TIME_STAMP_SEQUENCE:
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if ((section_len =
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decode_context_unsigned(&apdu[len],
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TIME_STAMP_SEQUENCE, &sequenceNum)) == -1) {
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return -1;
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} else {
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if (sequenceNum <= 0xffff) {
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len += section_len;
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value->value.sequenceNum = (uint16_t) sequenceNum;
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} else {
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return -1;
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}
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}
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break;
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case TIME_STAMP_DATETIME:
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if ((section_len =
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bacapp_decode_context_datetime(&apdu[len],
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TIME_STAMP_DATETIME,
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&value->value.dateTime)) == -1) {
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return -1;
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} else {
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len += section_len;
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}
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break;
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default:
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return -1;
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}
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}
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return len;
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}
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int bacapp_decode_context_timestamp(
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uint8_t * apdu,
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uint8_t tag_number,
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BACNET_TIMESTAMP * value)
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{
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int len = 0;
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int section_len;
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if (decode_is_opening_tag_number(&apdu[len], tag_number)) {
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len++;
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section_len = bacapp_decode_timestamp(&apdu[len], value);
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if (section_len > 0) {
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len += section_len;
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if (decode_is_closing_tag_number(&apdu[len], tag_number)) {
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len++;
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} else {
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return -1;
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}
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}
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}
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return len;
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}
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#ifdef TEST
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#include <assert.h>
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#include <string.h>
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#include "ctest.h"
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void testTimestampSequence(
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Test * pTest)
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{
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BACNET_TIMESTAMP testTimestampIn;
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BACNET_TIMESTAMP testTimestampOut;
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uint8_t buffer[MAX_APDU];
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int inLen;
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int outLen;
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testTimestampIn.tag = TIME_STAMP_SEQUENCE;
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testTimestampIn.value.sequenceNum = 0x1234;
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memset(&testTimestampOut, 0, sizeof(testTimestampOut));
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inLen = bacapp_encode_context_timestamp(buffer, 2, &testTimestampIn);
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outLen = bacapp_decode_context_timestamp(buffer, 2, &testTimestampOut);
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ct_test(pTest, inLen == outLen);
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ct_test(pTest, testTimestampIn.tag == testTimestampOut.tag);
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ct_test(pTest,
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testTimestampIn.value.sequenceNum ==
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testTimestampOut.value.sequenceNum);
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}
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void testTimestampTime(
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Test * pTest)
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{
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BACNET_TIMESTAMP testTimestampIn;
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BACNET_TIMESTAMP testTimestampOut;
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uint8_t buffer[MAX_APDU];
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int inLen;
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int outLen;
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testTimestampIn.tag = TIME_STAMP_TIME;
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testTimestampIn.value.time.hour = 1;
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testTimestampIn.value.time.min = 2;
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testTimestampIn.value.time.sec = 3;
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testTimestampIn.value.time.hundredths = 4;
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memset(&testTimestampOut, 0, sizeof(testTimestampOut));
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inLen = bacapp_encode_context_timestamp(buffer, 2, &testTimestampIn);
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outLen = bacapp_decode_context_timestamp(buffer, 2, &testTimestampOut);
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ct_test(pTest, inLen == outLen);
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ct_test(pTest, testTimestampIn.tag == testTimestampOut.tag);
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ct_test(pTest,
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testTimestampIn.value.time.hour == testTimestampOut.value.time.hour);
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ct_test(pTest,
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testTimestampIn.value.time.min == testTimestampOut.value.time.min);
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ct_test(pTest,
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testTimestampIn.value.time.sec == testTimestampOut.value.time.sec);
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ct_test(pTest,
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testTimestampIn.value.time.hundredths ==
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testTimestampOut.value.time.hundredths);
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}
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void testTimestampTimeDate(
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Test * pTest)
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{
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BACNET_TIMESTAMP testTimestampIn;
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BACNET_TIMESTAMP testTimestampOut;
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uint8_t buffer[MAX_APDU];
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int inLen;
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int outLen;
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testTimestampIn.tag = TIME_STAMP_DATETIME;
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testTimestampIn.value.dateTime.time.hour = 1;
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testTimestampIn.value.dateTime.time.min = 2;
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testTimestampIn.value.dateTime.time.sec = 3;
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testTimestampIn.value.dateTime.time.hundredths = 4;
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testTimestampIn.value.dateTime.date.year = 1901;
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testTimestampIn.value.dateTime.date.month = 1;
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testTimestampIn.value.dateTime.date.wday = 2;
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testTimestampIn.value.dateTime.date.day = 3;
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memset(&testTimestampOut, 0, sizeof(testTimestampOut));
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inLen = bacapp_encode_context_timestamp(buffer, 2, &testTimestampIn);
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outLen = bacapp_decode_context_timestamp(buffer, 2, &testTimestampOut);
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ct_test(pTest, inLen == outLen);
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ct_test(pTest, testTimestampIn.tag == testTimestampOut.tag);
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ct_test(pTest,
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testTimestampIn.value.dateTime.time.hour ==
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testTimestampOut.value.dateTime.time.hour);
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ct_test(pTest,
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testTimestampIn.value.dateTime.time.min ==
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testTimestampOut.value.dateTime.time.min);
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ct_test(pTest,
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testTimestampIn.value.dateTime.time.sec ==
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testTimestampOut.value.dateTime.time.sec);
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ct_test(pTest,
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testTimestampIn.value.dateTime.time.hundredths ==
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testTimestampOut.value.dateTime.time.hundredths);
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ct_test(pTest,
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testTimestampIn.value.dateTime.date.year ==
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testTimestampOut.value.dateTime.date.year);
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ct_test(pTest,
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testTimestampIn.value.dateTime.date.month ==
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testTimestampOut.value.dateTime.date.month);
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ct_test(pTest,
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testTimestampIn.value.dateTime.date.wday ==
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testTimestampOut.value.dateTime.date.wday);
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ct_test(pTest,
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testTimestampIn.value.dateTime.date.day ==
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testTimestampOut.value.dateTime.date.day);
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}
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#ifdef TEST_TIME_STAMP
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int main(
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void)
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{
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Test *pTest;
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bool rc;
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pTest = ct_create("BACnet Time Stamp", NULL);
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/* individual tests */
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rc = ct_addTestFunction(pTest, testTimestampSequence);
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assert(rc);
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rc = ct_addTestFunction(pTest, testTimestampTime);
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assert(rc);
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rc = ct_addTestFunction(pTest, testTimestampTimeDate);
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assert(rc);
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ct_setStream(pTest, stdout);
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ct_run(pTest);
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(void) ct_report(pTest);
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ct_destroy(pTest);
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return 0;
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}
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#endif /* TEST_TIME_STAMP */
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#endif /* TEST */
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