n-api: throw RangeError in napi_create_typedarray() with invalid args #18037

romandev · 2018-01-08T14:43:08Z

According to the ECMA spec, we should throw a RangeError in the
following cases:

(length * elementSize) + offset > the size of the array passed in
offset % elementSize != 0

In the current implementation, this check was omitted. So, the following
code will cause a crash.

  napi_create_typedarray(env, napi_uint16_array, 2 /* length */,
                         buffer, 1 /* byte_offset */, &output_array);

This change fixes the problem and write some related tests.

Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
documentation is changed or added
commit message follows commit guidelines

Affected core subsystem(s)

n-api

romandev

@mhdawson (or others) PTAL

cjihrig

LGTM with a few nits.

cjihrig · 2018-01-08T15:37:34Z

doc/api/errors.md

+<a id="ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT"></a>
+### ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT
+
+While calling `napi_create_typedarray()`, a given `offset` was not a multiple of


Maybe change "a given" to "the provided"?

cjihrig · 2018-01-08T15:38:30Z

doc/api/errors.md

+### ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT
+
+While calling `napi_create_typedarray()`, a given `offset` was not a multiple of
+size of element of given type.


Maybe change "size of element of given type" to "the element size"?

cjihrig · 2018-01-08T15:39:40Z

doc/api/errors.md

+### ERR_NAPI_INVALID_TYPEDARRAY_LENGTH
+
+While calling `napi_create_typedarray()`, `(length * size_of_element) +
+byte_offset` was larger than a length of given `buffer`.


"a length of given" -> "the length of"

cjihrig · 2018-01-08T15:43:44Z

test/addons-napi/test_typedarray/test.js

+  const template = Reflect.construct(currentType, buffer);
+  assert.throws(() => {
+    test_typedarray.CreateTypedArray(template, buffer, 0, 129);
+  }, RangeError);


Instead of just checking for RangeError, can you also validate the error message.

romandev

Thank you for review.
I addressed all your comments.

Another look?

romandev · 2018-01-08T16:50:25Z

doc/api/errors.md

+<a id="ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT"></a>
+### ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT
+
+While calling `napi_create_typedarray()`, a given `offset` was not a multiple of


romandev · 2018-01-08T16:50:33Z

doc/api/errors.md

+### ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT
+
+While calling `napi_create_typedarray()`, a given `offset` was not a multiple of
+size of element of given type.


romandev · 2018-01-08T16:50:39Z

doc/api/errors.md

+### ERR_NAPI_INVALID_TYPEDARRAY_LENGTH
+
+While calling `napi_create_typedarray()`, `(length * size_of_element) +
+byte_offset` was larger than a length of given `buffer`.


romandev · 2018-01-08T16:50:47Z

test/addons-napi/test_typedarray/test.js

+  const template = Reflect.construct(currentType, buffer);
+  assert.throws(() => {
+    test_typedarray.CreateTypedArray(template, buffer, 0, 129);
+  }, RangeError);


mhdawson

LGTM

mhdawson · 2018-01-08T23:14:48Z

Will leave a bit more time for comments and then kick of CI run tomorrow.

mhdawson · 2018-01-09T15:30:08Z

CI run: https://ci.nodejs.org/job/node-test-pull-request/12461/

mhdawson · 2018-01-10T16:59:21Z

@romandev either the test does not handle big endian or we have a bug as one of the tests failed on all of the Big Endian platforms:

https://ci.nodejs.org/job/node-test-commit-plinux/14443/nodes=ppcbe-ubuntu1404/console

not ok 1876 addons-napi/test_typedarray/test

duration_ms: 0.173
severity: fail
stack: |-
assert.js:288
throw actual;
^

RangeError [ERR_NAPI_INVALID_TYPEDARRAY_LENGTH]: Invalid typed array length
    at assert.throws (/home/iojs/build/workspace/node-test-commit-plinux/nodes/ppcbe-ubuntu1404/test/addons-napi/test_typedarray/test.js:71:21)
    at getActual (assert.js:252:5)
    at Function.throws (assert.js:260:18)
    at nonByteArrayTypes.forEach (/home/iojs/build/workspace/node-test-commit-plinux/nodes/ppcbe-ubuntu1404/test/addons-napi/test_typedarray/test.js:70:10)
    at Array.forEach (<anonymous>)
    at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-plinux/nodes/ppcbe-ubuntu1404/test/addons-napi/test_typedarray/test.js:68:19)
    at Module._compile (module.js:660:30)
    at Object.Module._extensions..js (module.js:671:10)
    at Module.load (module.js:577:32)
    at tryModuleLoad (module.js:517:12)

...

romandev · 2018-01-11T12:46:17Z

Should I use virtual machine to test on the platforms? or is there a better way?

mhdawson · 2018-01-11T22:00:02Z

@jBarz can you take a quick look at the change/code to see if you can easily suggest a fix ? @romandev if @jBarz can't come up with a suggestion easily we can request access to one of the community BE machines so you can investigate.

jBarz · 2018-01-12T02:59:29Z

test/addons-napi/test_typedarray/test_typedarray.c

+    NAPI_ASSERT(env, valuetype2 == napi_number,
+        "Wrong type of arguments. Expects a number as third argument.");
+
+    NAPI_CALL(env, napi_get_value_uint32(env, args[2], (uint32_t*)(&length)));


The cast won't work on big-endian. So something like this maybe?

uint32_t locallength = length; NAPI_CALL(..., &locallength); length = locallength;

Thank you for input. Done.

jBarz · 2018-01-12T03:00:01Z

test/addons-napi/test_typedarray/test_typedarray.c

+        "Wrong type of arguments. Expects a number as third argument.");
+
+    NAPI_CALL(env, napi_get_value_uint32(
+        env, args[3], (uint32_t*)(&byte_offset)));


jBarz

I made some comments about some explicit pointer casts that might be causing the big endian issues.

According to the ECMA spec, we should throw a RangeError in the following cases: - `(length * elementSize) + offset` > the size of the array passed in - `offset % elementSize` != `0` In the current implementation, this check was omitted. So, the following code will cause a crash. ``` napi_create_typedarray(env, napi_uint16_array, 2 /* length */, buffer, 1 /* byte_offset */, &output_array); ``` This change fixes the problem and write some related tests. Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length

mhdawson · 2018-01-15T18:39:58Z

New CI run: https://ci.nodejs.org/job/node-test-pull-request/12546/

romandev · 2018-01-16T01:33:06Z

@mhdawson Thank you for triggering CI.
It looks bot failure but it's not related to this PR.

sequential/test-timers-set-interval-excludes-callback-duration (failure)

mhdawson · 2018-01-16T20:17:04Z

CI failure is known issue -> #18160 and not related. CI looks clean.

According to the ECMA spec, we should throw a RangeError in the following cases: - `(length * elementSize) + offset` > the size of the array passed in - `offset % elementSize` != `0` In the current implementation, this check was omitted. So, the following code will cause a crash. ``` napi_create_typedarray(env, napi_uint16_array, 2 /* length */, buffer, 1 /* byte_offset */, &output_array); ``` This change fixes the problem and write some related tests. Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length PR-URL: #18037 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

mhdawson · 2018-01-16T20:24:35Z

Landed as 316b5ef

According to the ECMA spec, we should throw a RangeError in the following cases: - `(length * elementSize) + offset` > the size of the array passed in - `offset % elementSize` != `0` In the current implementation, this check was omitted. So, the following code will cause a crash. ``` napi_create_typedarray(env, napi_uint16_array, 2 /* length */, buffer, 1 /* byte_offset */, &output_array); ``` This change fixes the problem and write some related tests. Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length PR-URL: #18037 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

MylesBorins · 2018-02-27T05:42:41Z

Should this be backported to v8.x-staging? If yes please follow the guide and raise a backport PR, if not let me know or add the dont-land-on label.

According to the ECMA spec, we should throw a RangeError in the following cases: - `(length * elementSize) + offset` > the size of the array passed in - `offset % elementSize` != `0` In the current implementation, this check was omitted. So, the following code will cause a crash. ``` napi_create_typedarray(env, napi_uint16_array, 2 /* length */, buffer, 1 /* byte_offset */, &output_array); ``` This change fixes the problem and write some related tests. Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length PR-URL: nodejs#18037 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

According to the ECMA spec, we should throw a RangeError in the following cases: - `(length * elementSize) + offset` > the size of the array passed in - `offset % elementSize` != `0` In the current implementation, this check was omitted. So, the following code will cause a crash. ``` napi_create_typedarray(env, napi_uint16_array, 2 /* length */, buffer, 1 /* byte_offset */, &output_array); ``` This change fixes the problem and write some related tests. Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length Backport-PR-URL: #19447 PR-URL: #18037 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

According to the ECMA spec, we should throw a RangeError in the following cases: - `(length * elementSize) + offset` > the size of the array passed in - `offset % elementSize` != `0` In the current implementation, this check was omitted. So, the following code will cause a crash. ``` napi_create_typedarray(env, napi_uint16_array, 2 /* length */, buffer, 1 /* byte_offset */, &output_array); ``` This change fixes the problem and write some related tests. Refs: https://tc39.github.io/ecma262/#sec-typedarray-buffer-byteoffset-length Backport-PR-URL: #19265 PR-URL: #18037 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. lib / src Issues and PRs related to general changes in the lib or src directory. labels Jan 8, 2018

romandev commented Jan 8, 2018

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cjihrig approved these changes Jan 8, 2018

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jasnell approved these changes Jan 8, 2018

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romandev force-pushed the typedarray branch 2 times, most recently from 3677e16 to 48503c6 Compare January 8, 2018 16:52

romandev commented Jan 8, 2018

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mhdawson approved these changes Jan 8, 2018

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jBarz reviewed Jan 12, 2018

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jBarz suggested changes Jan 12, 2018

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romandev force-pushed the typedarray branch from 48503c6 to 3e6d561 Compare January 14, 2018 01:32

mhdawson closed this Jan 16, 2018

joyeecheung mentioned this pull request Jan 18, 2018

Investigate flaky sequential/test-async-wrap-getasyncid #18190

Closed

evanlucas mentioned this pull request Jan 30, 2018

v9.5.0 release proposal #18464

Merged

MylesBorins added dont-land-on-v6.x labels Feb 27, 2018

MylesBorins mentioned this pull request Apr 16, 2018

v6.14.2 proposal #19996

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MylesBorins mentioned this pull request May 2, 2018

v8.11.2 proposal #20478

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n-api: throw RangeError in napi_create_typedarray() with invalid args #18037

n-api: throw RangeError in napi_create_typedarray() with invalid args #18037

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n-api: throw RangeError in napi_create_typedarray() with invalid args #18037

n-api: throw RangeError in napi_create_typedarray() with invalid args #18037

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not ok 1876 addons-napi/test_typedarray/test

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