U_NAMESPACE_END
U_NAMESPACE_USE
//-----------------------------------------------------------------------------
//
// ubrk_swap - byte swap and char encoding swap of RBBI data
//
//-----------------------------------------------------------------------------
U_CAPI int32_t U_EXPORT2
ubrk_swap(const UDataSwapper *ds, const void *inData, int32_t length, void *outData,
UErrorCode *status) {
if (status == NULL || U_FAILURE(*status)) {
return 0;
}
if(ds==NULL || inData==NULL || length<-1 || (length>0 && outData==NULL)) {
*status=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
//
// Check that the data header is for for break data.
// (Header contents are defined in genbrk.cpp)
//
const UDataInfo *pInfo = (const UDataInfo *)((const char *)inData+4);
if(!( pInfo->dataFormat[0]==0x42 && /* dataFormat="Brk " */
pInfo->dataFormat[1]==0x72 &&
pInfo->dataFormat[2]==0x6b &&
pInfo->dataFormat[3]==0x20 &&
RBBIDataWrapper::isDataVersionAcceptable(pInfo->formatVersion) )) {
udata_printError(ds, "ubrk_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized\n",
pInfo->dataFormat[0], pInfo->dataFormat[1],
pInfo->dataFormat[2], pInfo->dataFormat[3],
pInfo->formatVersion[0]);
*status=U_UNSUPPORTED_ERROR;
return 0;
}
//
// Swap the data header. (This is the generic ICU Data Header, not the RBBI Specific
// RBBIDataHeader). This swap also conveniently gets us
// the size of the ICU d.h., which lets us locate the start
// of the RBBI specific data.
//
int32_t headerSize=udata_swapDataHeader(ds, inData, length, outData, status);
//
// Get the RRBI Data Header, and check that it appears to be OK.
//
const uint8_t *inBytes =(const uint8_t *)inData+headerSize;
RBBIDataHeader *rbbiDH = (RBBIDataHeader *)inBytes;
if (ds->readUInt32(rbbiDH->fMagic) != 0xb1a0 ||
!RBBIDataWrapper::isDataVersionAcceptable(rbbiDH->fFormatVersion) ||
ds->readUInt32(rbbiDH->fLength) < sizeof(RBBIDataHeader)) {
udata_printError(ds, "ubrk_swap(): RBBI Data header is invalid.\n");
*status=U_UNSUPPORTED_ERROR;
return 0;
}
//
// Prefight operation? Just return the size
//
int32_t breakDataLength = ds->readUInt32(rbbiDH->fLength);
int32_t totalSize = headerSize + breakDataLength;
if (length < 0) {
return totalSize;
}
//
// Check that length passed in is consistent with length from RBBI data header.
//
if (length < totalSize) {
udata_printError(ds, "ubrk_swap(): too few bytes (%d after ICU Data header) for break data.\n",
breakDataLength);
*status=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
//
// Swap the Data. Do the data itself first, then the RBBI Data Header, because
// we need to reference the header to locate the data, and an
// inplace swap of the header leaves it unusable.
//
uint8_t *outBytes = (uint8_t *)outData + headerSize;
RBBIDataHeader *outputDH = (RBBIDataHeader *)outBytes;
int32_t tableStartOffset;
int32_t tableLength;
//
// If not swapping in place, zero out the output buffer before starting.
// Individual tables and other data items within are aligned to 8 byte boundaries
// when originally created. Any unused space between items needs to be zero.
//
if (inBytes != outBytes) {
uprv_memset(outBytes, 0, breakDataLength);
}
//
// Each state table begins with several 32 bit fields. Calculate the size
// in bytes of these.
//
int32_t topSize = offsetof(RBBIStateTable, fTableData);
// Forward state table.
tableStartOffset = ds->readUInt32(rbbiDH->fFTable);
tableLength = ds->readUInt32(rbbiDH->fFTableLen);
if (tableLength > 0) {
ds->swapArray32(ds, inBytes+tableStartOffset, topSize,
outBytes+tableStartOffset, status);
ds->swapArray16(ds, inBytes+tableStartOffset+topSize, tableLength-topSize,
outBytes+tableStartOffset+topSize, status);
}
// Reverse state table. Same layout as forward table, above.
tableStartOffset = ds->readUInt32(rbbiDH->fRTable);
tableLength = ds->readUInt32(rbbiDH->fRTableLen);
if (tableLength > 0) {
ds->swapArray32(ds, inBytes+tableStartOffset, topSize,
outBytes+tableStartOffset, status);
ds->swapArray16(ds, inBytes+tableStartOffset+topSize, tableLength-topSize,
outBytes+tableStartOffset+topSize, status);
}
// Trie table for character categories
utrie2_swap(ds, inBytes+ds->readUInt32(rbbiDH->fTrie), ds->readUInt32(rbbiDH->fTrieLen),
outBytes+ds->readUInt32(rbbiDH->fTrie), status);
// Source Rules Text. It's UChar data
ds->swapArray16(ds, inBytes+ds->readUInt32(rbbiDH->fRuleSource), ds->readUInt32(rbbiDH->fRuleSourceLen),
outBytes+ds->readUInt32(rbbiDH->fRuleSource), status);
// Table of rule status values. It's all int_32 values
ds->swapArray32(ds, inBytes+ds->readUInt32(rbbiDH->fStatusTable), ds->readUInt32(rbbiDH->fStatusTableLen),
outBytes+ds->readUInt32(rbbiDH->fStatusTable), status);
// And, last, the header.
// It is all int32_t values except for fFormataVersion, which is an array of four bytes.
// Swap the whole thing as int32_t, then re-swap the one field.
//
ds->swapArray32(ds, inBytes, sizeof(RBBIDataHeader), outBytes, status);
ds->swapArray32(ds, outputDH->fFormatVersion, 4, outputDH->fFormatVersion, status);
return totalSize;
}
/**
* swap a selector into the desired Endianness and Asciiness of
* the system. Just as FYI, selectors are always saved in the format
* of the system that created them. They are only converted if used
* on another system. In other words, selectors created on different
* system can be different even if the params are identical (endianness
* and Asciiness differences only)
*
* @param ds pointer to data swapper containing swapping info
* @param inData pointer to incoming data
* @param length length of inData in bytes
* @param outData pointer to output data. Capacity should
* be at least equal to capacity of inData
* @param status an in/out ICU UErrorCode
* @return 0 on failure, number of bytes swapped on success
* number of bytes swapped can be smaller than length
*/
static int32_t
ucnvsel_swap(const UDataSwapper *ds,
const void *inData, int32_t length,
void *outData, UErrorCode *status) {
/* udata_swapDataHeader checks the arguments */
int32_t headerSize = udata_swapDataHeader(ds, inData, length, outData, status);
if(U_FAILURE(*status)) {
return 0;
}
/* check data format and format version */
const UDataInfo *pInfo = (const UDataInfo *)((const char *)inData + 4);
if(!(
pInfo->dataFormat[0] == 0x43 && /* dataFormat="CSel" */
pInfo->dataFormat[1] == 0x53 &&
pInfo->dataFormat[2] == 0x65 &&
pInfo->dataFormat[3] == 0x6c
)) {
udata_printError(ds, "ucnvsel_swap(): data format %02x.%02x.%02x.%02x is not recognized as UConverterSelector data\n",
pInfo->dataFormat[0], pInfo->dataFormat[1],
pInfo->dataFormat[2], pInfo->dataFormat[3]);
*status = U_INVALID_FORMAT_ERROR;
return 0;
}
if(pInfo->formatVersion[0] != 1) {
udata_printError(ds, "ucnvsel_swap(): format version %02x is not supported\n",
pInfo->formatVersion[0]);
*status = U_UNSUPPORTED_ERROR;
return 0;
}
if(length >= 0) {
length -= headerSize;
if(length < 16*4) {
udata_printError(ds, "ucnvsel_swap(): too few bytes (%d after header) for UConverterSelector data\n",
length);
*status = U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
}
const uint8_t *inBytes = (const uint8_t *)inData + headerSize;
uint8_t *outBytes = (uint8_t *)outData + headerSize;
/* read the indexes */
const int32_t *inIndexes = (const int32_t *)inBytes;
int32_t indexes[16];
int32_t i;
for(i = 0; i < 16; ++i) {
indexes[i] = udata_readInt32(ds, inIndexes[i]);
}
/* get the total length of the data */
int32_t size = indexes[UCNVSEL_INDEX_SIZE];
if(length >= 0) {
if(length < size) {
udata_printError(ds, "ucnvsel_swap(): too few bytes (%d after header) for all of UConverterSelector data\n",
length);
*status = U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
/* copy the data for inaccessible bytes */
if(inBytes != outBytes) {
uprv_memcpy(outBytes, inBytes, size);
}
int32_t offset = 0, count;
/* swap the int32_t indexes[] */
count = UCNVSEL_INDEX_COUNT*4;
ds->swapArray32(ds, inBytes, count, outBytes, status);
offset += count;
/* swap the UTrie2 */
count = indexes[UCNVSEL_INDEX_TRIE_SIZE];
utrie2_swap(ds, inBytes + offset, count, outBytes + offset, status);
offset += count;
/* swap the uint32_t pv[] */
count = indexes[UCNVSEL_INDEX_PV_COUNT]*4;
ds->swapArray32(ds, inBytes + offset, count, outBytes + offset, status);
offset += count;
/* swap the encoding names */
count = indexes[UCNVSEL_INDEX_NAMES_LENGTH];
ds->swapInvChars(ds, inBytes + offset, count, outBytes + offset, status);
offset += count;
U_ASSERT(offset == size);
}
return headerSize + size;
}
U_NAMESPACE_END
U_NAMESPACE_USE
//-----------------------------------------------------------------------------
//
// uspoof_swap - byte swap and char encoding swap of spoof data
//
//-----------------------------------------------------------------------------
U_CAPI int32_t U_EXPORT2
uspoof_swap(const UDataSwapper *ds, const void *inData, int32_t length, void *outData,
UErrorCode *status) {
if (status == NULL || U_FAILURE(*status)) {
return 0;
}
if(ds==NULL || inData==NULL || length<-1 || (length>0 && outData==NULL)) {
*status=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
//
// Check that the data header is for spoof data.
// (Header contents are defined in gencfu.cpp)
//
const UDataInfo *pInfo = (const UDataInfo *)((const char *)inData+4);
if(!( pInfo->dataFormat[0]==0x43 && /* dataFormat="Cfu " */
pInfo->dataFormat[1]==0x66 &&
pInfo->dataFormat[2]==0x75 &&
pInfo->dataFormat[3]==0x20 &&
pInfo->formatVersion[0]==1 )) {
udata_printError(ds, "uspoof_swap(): data format %02x.%02x.%02x.%02x "
"(format version %02x %02x %02x %02x) is not recognized\n",
pInfo->dataFormat[0], pInfo->dataFormat[1],
pInfo->dataFormat[2], pInfo->dataFormat[3],
pInfo->formatVersion[0], pInfo->formatVersion[1],
pInfo->formatVersion[2], pInfo->formatVersion[3]);
*status=U_UNSUPPORTED_ERROR;
return 0;
}
//
// Swap the data header. (This is the generic ICU Data Header, not the uspoof Specific
// header). This swap also conveniently gets us
// the size of the ICU d.h., which lets us locate the start
// of the uspoof specific data.
//
int32_t headerSize=udata_swapDataHeader(ds, inData, length, outData, status);
//
// Get the Spoof Data Header, and check that it appears to be OK.
//
//
const uint8_t *inBytes =(const uint8_t *)inData+headerSize;
SpoofDataHeader *spoofDH = (SpoofDataHeader *)inBytes;
if (ds->readUInt32(spoofDH->fMagic) != USPOOF_MAGIC ||
ds->readUInt32(spoofDH->fLength) < sizeof(SpoofDataHeader))
{
udata_printError(ds, "uspoof_swap(): Spoof Data header is invalid.\n");
*status=U_UNSUPPORTED_ERROR;
return 0;
}
//
// Prefight operation? Just return the size
//
int32_t spoofDataLength = ds->readUInt32(spoofDH->fLength);
int32_t totalSize = headerSize + spoofDataLength;
if (length < 0) {
return totalSize;
}
//
// Check that length passed in is consistent with length from Spoof data header.
//
if (length < totalSize) {
udata_printError(ds, "uspoof_swap(): too few bytes (%d after ICU Data header) for spoof data.\n",
spoofDataLength);
*status=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
//
// Swap the Data. Do the data itself first, then the Spoof Data Header, because
// we need to reference the header to locate the data, and an
// inplace swap of the header leaves it unusable.
//
uint8_t *outBytes = (uint8_t *)outData + headerSize;
SpoofDataHeader *outputDH = (SpoofDataHeader *)outBytes;
int32_t sectionStart;
int32_t sectionLength;
//
// If not swapping in place, zero out the output buffer before starting.
// Gaps may exist between the individual sections, and these must be zeroed in
// the output buffer. The simplest way to do that is to just zero the whole thing.
//
if (inBytes != outBytes) {
uprv_memset(outBytes, 0, spoofDataLength);
}
// Confusables Keys Section (fCFUKeys)
sectionStart = ds->readUInt32(spoofDH->fCFUKeys);
sectionLength = ds->readUInt32(spoofDH->fCFUKeysSize) * 4;
ds->swapArray32(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// String Index Section
sectionStart = ds->readUInt32(spoofDH->fCFUStringIndex);
sectionLength = ds->readUInt32(spoofDH->fCFUStringIndexSize) * 2;
ds->swapArray16(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// String Table Section
sectionStart = ds->readUInt32(spoofDH->fCFUStringTable);
sectionLength = ds->readUInt32(spoofDH->fCFUStringTableLen) * 2;
ds->swapArray16(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// String Lengths Section
sectionStart = ds->readUInt32(spoofDH->fCFUStringLengths);
sectionLength = ds->readUInt32(spoofDH->fCFUStringLengthsSize) * 4;
ds->swapArray16(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// Any Case Trie
sectionStart = ds->readUInt32(spoofDH->fAnyCaseTrie);
sectionLength = ds->readUInt32(spoofDH->fAnyCaseTrieLength);
utrie2_swap(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// Lower Case Trie
sectionStart = ds->readUInt32(spoofDH->fLowerCaseTrie);
sectionLength = ds->readUInt32(spoofDH->fLowerCaseTrieLength);
utrie2_swap(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// Script Sets. The data is an array of int32_t
sectionStart = ds->readUInt32(spoofDH->fScriptSets);
sectionLength = ds->readUInt32(spoofDH->fScriptSetsLength) * sizeof(ScriptSet);
ds->swapArray32(ds, inBytes+sectionStart, sectionLength, outBytes+sectionStart, status);
// And, last, swap the header itself.
// int32_t fMagic // swap this
// uint8_t fFormatVersion[4] // Do not swap this, just copy
// int32_t fLength and all the rest // Swap the rest, all is 32 bit stuff.
//
uint32_t magic = ds->readUInt32(spoofDH->fMagic);
ds->writeUInt32((uint32_t *)&outputDH->fMagic, magic);
if (outputDH->fFormatVersion != spoofDH->fFormatVersion) {
uprv_memcpy(outputDH->fFormatVersion, spoofDH->fFormatVersion, sizeof(spoofDH->fFormatVersion));
}
// swap starting at fLength
ds->swapArray32(ds, &spoofDH->fLength, sizeof(SpoofDataHeader)-8 /* minus magic and fFormatVersion[4] */, &outputDH->fLength, status);
return totalSize;
}
