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fix: add support for big integer (see X509SerialNumber in ISO1)

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git-svn-id: https://svn.code.sf.net/p/openv2g/code/trunk@112 d9f2db14-54d0-4bde-b00c-16405c910529
This commit is contained in:
daniel_peintner 2019-01-23 08:10:50 +00:00
parent 247f4647cf
commit 033a46dd37
8 changed files with 379 additions and 17 deletions
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204
src/codec/DecoderChannel.c
View file

@ -167,7 +167,7 @@ int decodeUnsignedInteger(bitstream_t* stream, exi_integer_t* iv) {
int decodeUnsignedInteger16(bitstream_t* stream, uint16_t* uint16) {
unsigned int mShift = 0;
int errn = 0;
uint8_t b;
uint8_t b = 0;
*uint16 = 0;
do {
@ -190,7 +190,7 @@ int decodeUnsignedInteger32(bitstream_t* stream, uint32_t* uint32) {
/* 0XXXXXXX ... 1XXXXXXX 1XXXXXXX */
unsigned int mShift = 0;
int errn = 0;
uint8_t b;
uint8_t b = 0;
*uint32 = 0;
do {
@ -263,6 +263,182 @@ int decodeUnsignedInteger64(bitstream_t* stream, uint64_t* uint64) {
}
void _reverseArray(uint8_t *array, int number) {
int x, t;
number--;
for(x = 0; x < number; x ++, number --) {
t = array[x];
array[x] = array[number];
array[number] = t;
}
}
/**
* Decode an arbitrary precision non negative integer using a sequence of
* octets. The most significant bit of the last octet is set to zero to
* indicate sequence termination. Only seven bits per octet are used to
* store the integer's value.
*/
int decodeUnsignedIntegerBig(bitstream_t* stream, size_t size, uint8_t* data, size_t* len) {
int errn = 0;
uint8_t b = 0;
unsigned int mShift1 = 0;
unsigned int mShift2 = 0;
unsigned int mShift3 = 0;
unsigned int mShift4 = 0;
unsigned int nBytesRead = 0;
unsigned int nBitsAvailable = 0;
uint64_t uint64_1 = 0;
uint64_t uint64_2 = 0;
uint64_t uint64_3 = 0;
uint64_t uint64_4 = 0;
*len = 0;
do {
errn = decode(stream, &b);
nBytesRead++;
nBitsAvailable += 7;
if(nBytesRead <= 8) {
uint64_1 += ((uint64_t) (b & 127)) << mShift1;
mShift1 += 7;
} else if(nBytesRead <= 16) {
uint64_2 += ((uint64_t) (b & 127)) << mShift2;
mShift2 += 7;
} else if(nBytesRead <= 24) {
uint64_3 += ((uint64_t) (b & 127)) << mShift3;
mShift3 += 7;
} else if(nBytesRead <= 32) {
uint64_4 += ((uint64_t) (b & 127)) << mShift4;
mShift4 += 7;
} else {
return -1; // too large
}
} while (errn == 0 && (b >> 7) == 1);
// shift actual data into array
if(uint64_4 != 0) {
// 7 octets for uint64_1
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 1
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 2
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 3
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 4
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 5
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 6
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 7
// 7 octets for uint64_2
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 1
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 2
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 3
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 4
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 5
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 6
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 7
// 7 octets for uint64_3
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 1
uint64_3 >>= 8;
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 2
uint64_3 >>= 8;
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 3
uint64_3 >>= 8;
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 4
uint64_3 >>= 8;
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 5
uint64_3 >>= 8;
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 6
uint64_3 >>= 8;
data[(*len)++] = (uint8_t)(uint64_3 & 0xFF); // 7
// remaining octets of uint64_4
while (uint64_4 != 0 && errn == 0) {
data[(*len)++] = uint64_4 & 0xFF;
uint64_4 >>= 8;
}
} else if(uint64_3 != 0) {
// 7 octets for uint64_1
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 1
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 2
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 3
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 4
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 5
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 6
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 7
// 7 octets for uint64_2
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 1
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 2
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 3
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 4
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 5
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 6
uint64_2 >>= 8;
data[(*len)++] = (uint8_t)(uint64_2 & 0xFF); // 7
// remaining octets of uint64_3
while (uint64_3 != 0 && errn == 0) {
data[(*len)++] = uint64_3 & 0xFF;
uint64_3 >>= 8;
}
} else if(uint64_2 != 0) {
// 7 octets for uint64_1
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 1
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 2
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 3
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 4
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 5
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 6
uint64_1 >>= 8;
data[(*len)++] = (uint8_t)(uint64_1 & 0xFF); // 7
// remaining octets of uint64_2
while (uint64_2 != 0 && errn == 0) {
data[(*len)++] = uint64_2 & 0xFF;
uint64_2 >>= 8;
}
} else if(uint64_1 != 0) {
while (uint64_1 != 0 && errn == 0) {
data[(*len)++] = uint64_1 & 0xFF;
uint64_1 >>= 8;
}
}
_reverseArray(data, *len);
return errn;
}
int decodeInteger(bitstream_t* stream, exi_integer_t* iv) {
int b;
int errn = decodeBoolean(stream, &b);
@ -355,6 +531,28 @@ int decodeInteger64(bitstream_t* stream, int64_t* int64) {
return errn;
}
/**
* Decode an arbitrary precision integer using a sign bit followed by a
* sequence of octets. The most significant bit of the last octet is set to
* zero to indicate sequence termination. Only seven bits per octet are used
* to store the integer's value.
*/
int decodeIntegerBig(bitstream_t* stream, int* negative, size_t size, uint8_t* data, size_t* len) {
int errn = decodeBoolean(stream, negative);
if (errn == 0) {
if (*negative) {
/* For negative values, the Unsigned Integer holds the
* magnitude of the value minus 1 */
} else {
/* positive */
}
errn = decodeUnsignedIntegerBig(stream, size, data, len);
}
return errn;
}
/**
* Decode a Float datatype as two consecutive Integers.
* The first Integer represents the mantissa of the floating point
@ -554,7 +752,7 @@ int decodeBinary(bitstream_t* stream, exi_bytes_t* bytes) {
int decodeBytes(bitstream_t* stream, size_t len, uint8_t* data) {
unsigned int i;
int errn = 0;
uint8_t b;
uint8_t b = 0;
for (i = 0; i < len && errn == 0; i++) {
errn = decode(stream, &b);

34
src/codec/DecoderChannel.h
View file

@ -163,6 +163,23 @@ int decodeUnsignedIntegerSizeT(bitstream_t* stream, size_t* sizeT);
*/
int decodeUnsignedInteger64(bitstream_t* stream, uint64_t* uint64);
/**
* \brief Decode unsigned integer
*
* Decode an arbitrary precision non negative integer using
* a sequence of octets. The most significant bit of the last
* octet is set to zero to indicate sequence termination.
* Only seven bits per octet are used to store the integer's value.
*
* \param stream Input Stream
* \param size size array
* \param data data array
* \param len length array
* \return Error-Code <> 0
*
*/
int decodeUnsignedIntegerBig(bitstream_t* stream, size_t size, uint8_t* data, size_t* len);
/**
* \brief Decode integer
@ -227,6 +244,23 @@ int decodeInteger32(bitstream_t* stream, int32_t* int32);
*/
int decodeInteger64(bitstream_t* stream, int64_t* int64);
/**
* \brief Decode integer
*
* Decode an arbitrary precision integer using a sign bit
* followed by a sequence of octets. The most significant bit
* of the last octet is set to zero to indicate sequence termination.
* Only seven bits per octet are used to store the integer's value.
*
* \param stream Input Stream
* \param negative negative integer
* \param size size array
* \param data data array
* \param len length array
* \return Error-Code <> 0
*
*/
int decodeIntegerBig(bitstream_t* stream, int* negative, size_t size, uint8_t* data, size_t* len);
/**
* \brief Decode float

5
src/codec/EXITypes.h
View file

@ -437,14 +437,9 @@ typedef struct {
exi_name_entry_t localName;
} exi_qname_t;
/*TODO Doxygen Documentation */
/* ==================================== */
/* URI and LocalName Entries */
typedef struct exiNameTablePrepopulated {

87
src/codec/EncoderChannel.c
View file

@ -205,6 +205,69 @@ int encodeUnsignedInteger64(bitstream_t* stream, uint64_t n) {
return errn;
}
void _shiftRight7(uint8_t* buf, int len) {
const int shift = 7;
unsigned char tmp = 0x00, tmp2 = 0x00;
for (int k = 0; k <= len; k++) {
if (k == 0) {
tmp = buf[k];
buf[k] >>= shift;
} else {
tmp2 = buf[k];
buf[k] >>= shift;
buf[k] |= ((tmp & 0x7F) << (8 - shift));
if (k != len) {
tmp = tmp2;
}
}
}
}
/**
* Encode an arbitrary precision non negative integer using a sequence of
* octets. The most significant bit of the last octet is set to zero to
* indicate sequence termination. Only seven bits per octet are used to
* store the integer's value.
*/
int encodeUnsignedIntegerBig(bitstream_t* stream, size_t size, uint8_t* data, size_t len) {
int errn = 0;
int i;
int lenM1 = len - 1;
const int MAX_BIGINT_ARRAY = 25;
uint8_t lastEncode = 0;
uint8_t bytesToShift[MAX_BIGINT_ARRAY]; // MAXIMUM
size_t bitsToEncode = len * 8;
if(MAX_BIGINT_ARRAY <= len) {
return -1;
}
/* init */
for(i=0; i<MAX_BIGINT_ARRAY; i++) {
bytesToShift[i] = 0;
}
/* copy bytes first in same order for shifting */
for(i=0; i < len; i++) {
bytesToShift[i] = data[i];
}
while(bitsToEncode > 7) {
lastEncode = bytesToShift[lenM1];
lastEncode = lastEncode | 128;
errn = encode(stream, lastEncode);
_shiftRight7(bytesToShift, len);
bitsToEncode -= 7;
}
if (errn == 0) {
errn = encode(stream, bytesToShift[lenM1]);
}
return errn;
}
int encodeInteger(bitstream_t* stream, exi_integer_t* iv) {
int errn = 0;
switch (iv->type) {
@ -314,6 +377,30 @@ int encodeInteger64(bitstream_t* stream, int64_t n) {
return errn;
}
/**
* Encode an arbitrary precision integer using a sign bit followed by a
* sequence of octets. The most significant bit of the last octet is set to
* zero to indicate sequence termination. Only seven bits per octet are used
* to store the integer's value.
*/
int encodeIntegerBig(bitstream_t* stream, int negative, size_t size, uint8_t* data, size_t len) {
int errn;
/* signalize sign */
if (negative) {
errn = encodeBoolean(stream, 1);
/* For negative values, the Unsigned Integer holds the
* magnitude of the value minus 1 */
/* n = (-n) - 1; */
} else {
errn = encodeBoolean(stream, 0);
}
if (errn == 0) {
errn = encodeUnsignedIntegerBig(stream, size, data, len);
}
return errn;
}
/**
* The Float datatype representation is two consecutive Integers.
* The first Integer represents the mantissa of the floating point

34
src/codec/EncoderChannel.h
View file

@ -148,6 +148,23 @@ int encodeUnsignedInteger32(bitstream_t* stream, uint32_t n);
*/
int encodeUnsignedInteger64(bitstream_t* stream, uint64_t n);
/**
* \brief Encode unsigned integer
*
* Encode an arbitrary precision non negative integer using
* a sequence of octets. The most significant bit of the last
* octet is set to zero to indicate sequence termination.
* Only seven bits per octet are used to store the integer's value.
*
* \param stream Output Stream
* \param size size array
* \param data data array
* \param len length array
* \return Error-Code <> 0
*
*/
int encodeUnsignedIntegerBig(bitstream_t* stream, size_t size, uint8_t* data, size_t len);
/**
* \brief Encode integer
@ -211,6 +228,23 @@ int encodeInteger32(bitstream_t* stream, int32_t n);
*/
int encodeInteger64(bitstream_t* stream, int64_t n);
/**
* \brief Encode integer
*
* Encode an arbitrary precision integer using a sign boolean
* followed by a sequence of octets. The most significant bit
* of the last octet is set to zero to indicate sequence termination.
* Only seven bits per octet are used to store the integer's value.
*
* \param stream Output Stream
* \param negative negative integer
* \param size size array
* \param data data array
* \param len length array
* \return Error-Code <> 0
*
*/
int encodeIntegerBig(bitstream_t* stream, int negative, size_t size, uint8_t* data, size_t len);
/**
* \brief Encode float

15
src/iso1/iso1EXIDatatypes.h
View file

@ -464,6 +464,7 @@ struct iso1KeyValueType {
/* Complex type name='http://www.w3.org/2000/09/xmldsig#,X509IssuerSerialType', base type name='anyType', content type='ELEMENT', isAbstract='false', hasTypeId='false', final='0', block='0', particle='("http://www.w3.org/2000/09/xmldsig#":X509IssuerName,"http://www.w3.org/2000/09/xmldsig#":X509SerialNumber)', derivedBy='RESTRICTION'. */
#define iso1X509IssuerSerialType_X509IssuerName_CHARACTERS_SIZE 50 + EXTRA_CHAR
uint8_t characters[20];
struct iso1X509IssuerSerialType {
/* element: "http://www.w3.org/2000/09/xmldsig#":X509IssuerName, http://www.w3.org/2001/XMLSchema,string */
struct {
@ -471,7 +472,19 @@ struct iso1X509IssuerSerialType {
uint16_t charactersLen;
} X509IssuerName ;
/* element: "http://www.w3.org/2000/09/xmldsig#":X509SerialNumber, http://www.w3.org/2001/XMLSchema,integer */
int64_t X509SerialNumber ;
/* int64_t X509SerialNumber; */
struct {
/** a sign value */
int negative;
/* container size */
size_t size;
/** array data container */
/* For negative values, the Unsigned Integer holds the
* magnitude of the value minus 1 */
uint8_t* data;
/** array length (len <= size) */
size_t len;
} X509SerialNumber;
};
typedef enum {

2
src/iso1/iso1EXIDatatypesDecoder.c
View file

@ -8060,7 +8060,7 @@ static int decode_iso1X509IssuerSerialType(bitstream_t* stream, struct iso1X509I
errn = decodeNBitUnsignedInteger(stream, 1, &eventCode);
if(errn == 0) {
if(eventCode == 0) {
errn = decodeInteger64(stream, &iso1X509IssuerSerialType->X509SerialNumber);
errn = decodeIntegerBig(stream, &iso1X509IssuerSerialType->X509SerialNumber.negative, iso1X509IssuerSerialType->X509SerialNumber.size, iso1X509IssuerSerialType->X509SerialNumber.data, &iso1X509IssuerSerialType->X509SerialNumber.len);
} else {
/* Second level event (e.g., xsi:type, xsi:nil, ...) */
errn = EXI_UNSUPPORTED_EVENT_CODE_CHARACTERISTICS;

3
src/iso1/iso1EXIDatatypesEncoder.c
View file

@ -5814,7 +5814,8 @@ static int encode_iso1X509IssuerSerialType(bitstream_t* stream, struct iso1X509I
/* First(xsi:type)StartTag[CHARACTERS[INTEGER]] */
errn = encodeNBitUnsignedInteger(stream, 1, 0);
if(errn == 0) {
errn = encodeInteger64(stream, iso1X509IssuerSerialType->X509SerialNumber);
/* errn = encodeInteger64(stream, iso1X509IssuerSerialType->X509SerialNumber); */
errn = encodeIntegerBig(stream, iso1X509IssuerSerialType->X509SerialNumber.negative, iso1X509IssuerSerialType->X509SerialNumber.size, iso1X509IssuerSerialType->X509SerialNumber.data, iso1X509IssuerSerialType->X509SerialNumber.len);
/* valid EE */
errn = encodeNBitUnsignedInteger(stream, 1, 0);
}