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Possible fix for https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50388

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This commit is contained in:
Sean Owen 2022-08-18 08:42:06 -05:00
parent 45df470227
commit 7fe6d3c108
1 changed files with 7 additions and 5 deletions
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12
core/src/main/java/com/google/zxing/pdf417/decoder/DecodedBitStreamParser.java
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@ -257,8 +257,10 @@ final class DecodedBitStreamParser {
// do not include terminator
optionalFieldsLength--;
}
resultMetadata.setOptionalData(
Arrays.copyOfRange(codewords, optionalFieldsStart, optionalFieldsStart + optionalFieldsLength));
if (optionalFieldsLength > 0) {
resultMetadata.setOptionalData(Arrays.copyOfRange(codewords,
optionalFieldsStart, optionalFieldsStart + optionalFieldsLength));
}
}
return codeIndex;
@ -547,14 +549,14 @@ final class DecodedBitStreamParser {
int codeIndex,
ECIStringBuilder result) throws FormatException {
boolean end = false;
while (codeIndex < codewords[0] && !end) {
//handle leading ECIs
while (codeIndex < codewords[0] && codewords[codeIndex] == ECI_CHARSET) {
result.appendECI(codewords[++codeIndex]);
codeIndex++;
}
if (codeIndex >= codewords[0] || codewords[codeIndex] >= TEXT_COMPACTION_MODE_LATCH) {
end = true;
} else {
@ -564,7 +566,7 @@ final class DecodedBitStreamParser {
do {
value = 900 * value + codewords[codeIndex++];
count++;
} while (count < 5 &&
} while (count < 5 &&
codeIndex < codewords[0] &&
codewords[codeIndex] < TEXT_COMPACTION_MODE_LATCH);
if (count == 5 && (mode == BYTE_COMPACTION_MODE_LATCH_6 ||