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Prevent failures in the "scanning for endstream" code, in Parser_makeStream, by handling the case where 'endstream' is split between contiguous chunks (issue 1536)

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This commit is contained in:
Jonas Jenwald 2016-01-25 22:56:34 +01:00
parent 051a0746e1
commit 15ce96a6eb
4 changed files with 32 additions and 13 deletions
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25
src/core/parser.js
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@ -488,23 +488,22 @@ var Parser = (function ParserClosure() {
break;
}
found = false;
for (i = 0, j = 0; i < scanLength; i++) {
var b = scanBytes[i];
if (b !== ENDSTREAM_SIGNATURE[j]) {
i -= j;
j = 0;
} else {
i = 0;
while (i < scanLength) {
j = 0;
while (j < ENDSTREAM_SIGNATURE_LENGTH &&
scanBytes[i + j] === ENDSTREAM_SIGNATURE[j]) {
j++;
if (j >= ENDSTREAM_SIGNATURE_LENGTH) {
i++;
found = true;
break;
}
}
if (j >= ENDSTREAM_SIGNATURE_LENGTH) {
found = true;
break;
}
i++;
}
if (found) {
skipped += i - ENDSTREAM_SIGNATURE_LENGTH;
stream.pos += i - ENDSTREAM_SIGNATURE_LENGTH;
skipped += i;
stream.pos += i;
break;
}
skipped += scanLength;