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REM: remove unused files

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iceman1001 2019-01-09 16:28:06 +01:00
commit 8a514ea8f1
2 changed files with 0 additions and 132 deletions
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94
armsrc/tlv.c
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#include <tlv.h>
int decode_ber_tlv_item(uint8_t* data, tlvtag* returnedtag)
{
uint8_t tag[TAG_LENGTH] = {0x00, 0x00, 0x00, 0x00};
uint16_t length = 0;
//uint8_t value[VALUE_LENGTH];
uint8_t lenlen = 0;
int i = 0;
int z = 0;
//decode tag
tag[0] = data[0];
if ((tag[0] & TLV_TAG_NUMBER_MASK) == TLV_TAG_NUMBER_MASK) { //see subsequent bytes
i++;
tag[i] = data[i];
while((data[i] & TLV_TAG_MASK) == TLV_TAG_MASK){
i++;
tag[i] = data[i];
}
}
i++;
//decode length
if ((data[i] & TLV_LENGTH_MASK) == TLV_LENGTH_MASK) {
lenlen = data[i] ^ TLV_LENGTH_MASK;
i++;
length = (uint16_t)data[i];
z = 1;
while (z < lenlen) {
i++;
z++;
length <<= 8;
length += (uint16_t)data[i];
}
i++;
} else {
length = (uint16_t)data[i];
i++;
}
// copy results into the structure and return
memcpy(returnedtag->tag, tag, TAG_LENGTH);
// return length of tag value
(*returnedtag).valuelength = length;
// return length of total field
(*returnedtag).fieldlength = length + i + 1;
memcpy(returnedtag->value, &(data[i]), length);
return 0;
}
//generate a TLV tag off input data
int encode_ber_tlv_item(uint8_t* tag, uint8_t taglen, uint8_t* data, uint32_t datalen, uint8_t* outputtag, uint32_t* outputtaglen)
{
if (!tag || !data || !outputtag || !outputtaglen)
return 0;
// field length of the tag
uint8_t datafieldlen = (datalen / 128) + 1;
// total length of the tag
uint8_t tlvtotallen = taglen + datafieldlen + datalen;
// buffer for the returned tag
uint8_t returnedtag[tlvtotallen];
uint8_t counter = 0;
// copy tag into buffer
memcpy(returnedtag, tag, taglen);
counter += taglen;
// 1 byte length value
if (datalen < 128){
returnedtag[counter++] = datalen;
} else {
// high bit set and number of length bytes
returnedtag[counter++] = datafieldlen | 0x80;
for (uint8_t i = datafieldlen; i !=0; i--) {
// get current byte
returnedtag[counter++] = (datalen >> (i * 8)) & 0xFF;
}
}
memcpy(&returnedtag[counter], data, datalen);
*outputtaglen = tlvtotallen;
memcpy(outputtag, returnedtag, tlvtotallen);
return 0;
}

38
armsrc/tlv.h
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#ifndef __TLV_H
#define __TLV_H
#include <stdint.h>
#include <string.h>
#include <stddef.h>
//structure buffer definitions
#ifndef TAG_LENGTH
# define TAG_LENGTH 4
#endif
#ifndef VALUE_LENGTH
# define VALUE_LENGTH 1024
#endif
//masks
//if TLV_TAG_NUMBER_MASK bits are set, refer to the next byte for the tag number
//otherwise its located in bits 1-5
#define TLV_TAG_NUMBER_MASK 0x1f
//if TLV_DATA_MASK set then its a 'constructed data object'
//otherwise a 'primitive data object'
#define TLV_DATA_MASK 0x20
#define TLV_TAG_MASK 0x80
#define TLV_LENGTH_MASK 0x80
//tlv tag structure, tag can be max of 4 bytes, length up to 0xFFFFFFFF and value 1024 bytes long
typedef struct {
uint8_t tag[TAG_LENGTH];
uint16_t fieldlength;
uint16_t valuelength;
uint8_t value[VALUE_LENGTH];
} tlvtag;
//decode a BER TLV
extern int decode_ber_tlv_item(uint8_t* data, tlvtag* returnedtag);
extern int encode_ber_tlv_item(uint8_t* tag, uint8_t taglen, uint8_t*data, uint32_t datalen, uint8_t* outputtag, uint32_t* outputtaglen);
#endif //__TLV_H