Skip to content

Extract out fs validation functions #17682

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.

Sign up for GitHub

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

Closed
maclover7 wants to merge 6 commits into from
Closed

Extract out fs validation functions #17682

Changes from 1 commit
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
df6ceef
fs: extract out validateFd function
maclover7 Dec 13, 2017
3b7a7aa
fs: extract out validateOffsetLengthRead function
maclover7 Dec 13, 2017
0de5472
fs: extract out validateBuffer function
maclover7 Dec 14, 2017
b2a7296
fs: extract out validateOffsetLengthWrite function
maclover7 Dec 22, 2017
f225d4f
fs: extract out validatePath function
maclover7 Dec 22, 2017
bfd1e14
fs: extract out validateUint32 and validateLen functions
maclover7 Dec 23, 2017
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
Prev Previous commit
Next Next commit
fs: extract out validateOffsetLengthWrite function
  • Loading branch information
@maclover7
maclover7 committed Dec 31, 2017
commit b2a72961936af5ae69be22e01c346479d799d1c7
27 changes: 17 additions & 10 deletions lib/fs.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -189,6 +189,21 @@ function validateOffsetLengthRead(offset, length, bufferLength) {
}
}

function validateOffsetLengthWrite(offset, length, byteLength) {
let err;

if (offset > byteLength) {
err = new errors.RangeError('ERR_OUT_OF_RANGE', 'offset');
} else if (offset + length > byteLength || offset + length > kMaxLength) {
err = new errors.RangeError('ERR_OUT_OF_RANGE', 'length');
}

if (err !== undefined) {
Error.captureStackTrace(err, validateOffsetLengthWrite);
throw err;
}
}

// Special case of `makeCallback()` that is specific to async `*stat()` calls as
// an optimization, since the data passed back to the callback needs to be
// transformed anyway.
Expand Down Expand Up @@ -826,11 +841,7 @@ fs.write = function(fd, buffer, offset, length, position, callback) {
length = buffer.length - offset;
if (typeof position !== 'number')
position = null;
const byteLength = buffer.byteLength;
if (offset > byteLength)
throw new errors.RangeError('ERR_OUT_OF_RANGE', 'offset');
if (offset + length > byteLength || offset + length > kMaxLength)
throw new errors.RangeError('ERR_OUT_OF_RANGE', 'length');
validateOffsetLengthWrite(offset, length, buffer.byteLength);
return binding.writeBuffer(fd, buffer, offset, length, position, req);
}

Expand Down Expand Up @@ -865,11 +876,7 @@ fs.writeSync = function(fd, buffer, offset, length, position) {
offset = 0;
if (typeof length !== 'number')
length = buffer.length - offset;
const byteLength = buffer.byteLength;
if (offset > byteLength)
throw new errors.RangeError('ERR_OUT_OF_RANGE', 'offset');
if (offset + length > byteLength || offset + length > kMaxLength)
throw new errors.RangeError('ERR_OUT_OF_RANGE', 'length');
validateOffsetLengthWrite(offset, length, buffer.byteLength);
return binding.writeBuffer(fd, buffer, offset, length, position);
}
if (typeof buffer !== 'string')
Expand Down