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fix(ext/node): fix Buffer.copy when sourceStart > source.length (#21345)

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Yoshiya Hinosawa 2023-11-28 22:28:07 +09:00 committed by GitHub
parent 4ed9278bf4
commit 567d7ff923
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4 changed files with 7 additions and 6 deletions
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1
cli/tests/node_compat/config.jsonc
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@ -22,7 +22,6 @@
"test-buffer-alloc.js", "test-buffer-alloc.js",
"test-buffer-arraybuffer.js", "test-buffer-arraybuffer.js",
"test-buffer-bytelength.js", "test-buffer-bytelength.js",
"test-buffer-copy.js",
"test-buffer-from.js", "test-buffer-from.js",
"test-buffer-includes.js", "test-buffer-includes.js",
"test-buffer-indexof.js", "test-buffer-indexof.js",

2
cli/tests/node_compat/test/parallel/test-buffer-alloc.js
View file

@ -131,7 +131,7 @@ b.copy(Buffer.alloc(0), 1, 1, 1);
b.copy(Buffer.alloc(1), 1, 1, 1); b.copy(Buffer.alloc(1), 1, 1, 1);
// Try to copy 0 bytes from past the end of the source buffer // Try to copy 0 bytes from past the end of the source buffer
b.copy(Buffer.alloc(1), 0, 2048, 2048); b.copy(Buffer.alloc(1), 0, 1024, 1024);
// Testing for smart defaults and ability to pass string values as offset // Testing for smart defaults and ability to pass string values as offset
{ {

2
cli/tests/node_compat/test/parallel/test-buffer-copy.js
View file

@ -165,7 +165,6 @@ assert.throws(
} }
); );
/*
// Copy throws if sourceStart is greater than length of source // Copy throws if sourceStart is greater than length of source
assert.throws( assert.throws(
() => Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, 100), () => Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, 100),
@ -174,7 +173,6 @@ assert.throws(
name: 'RangeError', name: 'RangeError',
} }
); );
*/
{ {
// Check sourceEnd resets to targetEnd if former is greater than the latter // Check sourceEnd resets to targetEnd if former is greater than the latter

8
ext/node/polyfills/internal/buffer.mjs
View file

@ -1536,8 +1536,12 @@ Buffer.prototype.copy = function copy(
sourceStart = 0; sourceStart = 0;
} else { } else {
sourceStart = toInteger(sourceStart, 0); sourceStart = toInteger(sourceStart, 0);
if (sourceStart < 0) { if (sourceStart < 0 || sourceStart > this.length) {
throw new codes.ERR_OUT_OF_RANGE("sourceStart", ">= 0", sourceStart); throw new codes.ERR_OUT_OF_RANGE(
"sourceStart",
`>= 0 && <= ${this.length}`,
sourceStart,
);
} }
if (sourceStart >= MAX_UINT32) { if (sourceStart >= MAX_UINT32) {
throw new codes.ERR_OUT_OF_RANGE( throw new codes.ERR_OUT_OF_RANGE(