Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

lib,zlib: fix brotli flush range #38408

Merged
merged 1 commit into from
May 1, 2021
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
21 changes: 18 additions & 3 deletions lib/zlib.js
Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,7 @@ const {
BROTLI_DECODE, BROTLI_ENCODE,
// Brotli operations (~flush levels)
BROTLI_OPERATION_PROCESS, BROTLI_OPERATION_FLUSH,
BROTLI_OPERATION_FINISH
BROTLI_OPERATION_FINISH, BROTLI_OPERATION_EMIT_METADATA,
} = constants;

// Translation table for return codes.
Expand Down Expand Up @@ -238,6 +238,13 @@ const checkRangesOrGetDefault = hideStackFrames(
}
);

const FLUSH_BOUND = [
[ Z_NO_FLUSH, Z_BLOCK ],
[ BROTLI_OPERATION_PROCESS, BROTLI_OPERATION_EMIT_METADATA ],
];
const FLUSH_BOUND_IDX_NORMAL = 0;
const FLUSH_BOUND_IDX_BROTLI = 1;

// The base class for all Zlib-style streams.
function ZlibBase(opts, mode, handle, { flush, finishFlush, fullFlush }) {
let chunkSize = Z_DEFAULT_CHUNK;
Expand All @@ -247,6 +254,13 @@ function ZlibBase(opts, mode, handle, { flush, finishFlush, fullFlush }) {
assert(typeof mode === 'number');
assert(mode >= DEFLATE && mode <= BROTLI_ENCODE);

let flushBoundIdx;
if (mode !== BROTLI_ENCODE && mode !== BROTLI_DECODE) {
flushBoundIdx = FLUSH_BOUND_IDX_NORMAL;
} else {
flushBoundIdx = FLUSH_BOUND_IDX_BROTLI;
}

if (opts) {
chunkSize = opts.chunkSize;
if (!checkFiniteNumber(chunkSize, 'options.chunkSize')) {
Expand All @@ -258,11 +272,12 @@ function ZlibBase(opts, mode, handle, { flush, finishFlush, fullFlush }) {

flush = checkRangesOrGetDefault(
opts.flush, 'options.flush',
Z_NO_FLUSH, Z_BLOCK, flush);
FLUSH_BOUND[flushBoundIdx][0], FLUSH_BOUND[flushBoundIdx][1], flush);

finishFlush = checkRangesOrGetDefault(
opts.finishFlush, 'options.finishFlush',
Z_NO_FLUSH, Z_BLOCK, finishFlush);
FLUSH_BOUND[flushBoundIdx][0], FLUSH_BOUND[flushBoundIdx][1],
finishFlush);

maxOutputLength = checkRangesOrGetDefault(
opts.maxOutputLength, 'options.maxOutputLength',
Expand Down
21 changes: 21 additions & 0 deletions test/parallel/test-zlib-brotli.js
Original file line number Diff line number Diff line change
Expand Up @@ -71,3 +71,24 @@ const sampleBuffer = fixtures.readSync('/pss-vectors.json');
message: 'Initialization failed'
});
}

{
// Test options.flush range
assert.throws(() => {
zlib.brotliCompressSync('', { flush: zlib.constants.Z_FINISH });
}, {
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "options.flush" is out of range. It must be >= 0 ' +
'and <= 3. Received 4',
});

assert.throws(() => {
zlib.brotliCompressSync('', { finishFlush: zlib.constants.Z_FINISH });
}, {
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "options.finishFlush" is out of range. It must be ' +
'>= 0 and <= 3. Received 4',
});
}