n-api: throw RangeError in napi_create_dataview() with invalid range by romandev · Pull Request #17869 · nodejs/node · GitHub

The API is required that byte_length + byte_offset is less than or
equal to the size in bytes of the array passed in. If not, a RangeError
exception is raised.

Refs: https://nodejs.org/api/n-api.html#n_api_napi_create_dataview

Checklist

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

Affected core subsystem(s)

n-api

Shouldn't there be some kind of early return in this case? Otherwise we still create the DataView instance & pass it in *result... right?

You're right. I missed return statement. :(
Done. Thank you for review.

The fact that V8 isn’t throwing an error on cases like this sounds like a bug to me, as the JS DataView constructor does throw. But, this LGTM.

Thank you for review. You're right. In JS code, new DataView(new ArrayBuffer(10), 3, 20) will throw RangeError[1] but V8 public API is not.

[1] https://cs.chromium.org/chromium/src/v8/src/builtins/builtins-dataview.cc?sq=package:chromium&l=74

Gentle ping :)

The CODE passed in should be defined in https://github.com/nodejs/node/blob/master/lib/internal/errors.js right after ERR_NAPI_CONTS_PROTOTYPE_OBJECT, and I'd suggest it be ERR_NAPI_INVALID_DATAVIEW_ARGS

Thank you for review. Done.

Just one comment about how we define the error code but after that it fixed up it looks good.

The message here should match the message in src/node_api.cc. There will be a better way to handle errors on the native side but for now I think we want to make the messages the same.

I should have suggested that in the original comment.

Thank you for explanation.
I've addressed your comment in my latest patch.

LGTM

CI run: https://ci.nodejs.org/job/node-test-pull-request/12409/

The API is required that `byte_length + byte_offset` is less than or equal to the size in bytes of the array passed in. If not, a RangeError exception is raised[1]. [1] https://nodejs.org/api/n-api.html#n_api_napi_create_dataview

@mhdawson I've just fixed the CI error in latest patch. Also, I tested it on my Mac and Linux. (Used this command /usr/bin/python2.7 tools/test.py --mode=release -J addons-napi)
Could you please re-run CI?

FYI, a crash occurred because there was no this line.

new CI : https://ci.nodejs.org/job/node-test-pull-request/12421/

The API is required that `byte_length + byte_offset` is less than or equal to the size in bytes of the array passed in. If not, a RangeError exception is raised[1]. [1] https://nodejs.org/api/n-api.html#n_api_napi_create_dataview PR-URL: #17869 Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>

Landed in 91c1ccd

The API is required that `byte_length + byte_offset` is less than or equal to the size in bytes of the array passed in. If not, a RangeError exception is raised[1]. [1] https://nodejs.org/api/n-api.html#n_api_napi_create_dataview PR-URL: #17869 Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>

The API is required that `byte_length + byte_offset` is less than or equal to the size in bytes of the array passed in. If not, a RangeError exception is raised[1]. [1] https://nodejs.org/api/n-api.html#n_api_napi_create_dataview PR-URL: nodejs#17869 Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>

The API is required that `byte_length + byte_offset` is less than or equal to the size in bytes of the array passed in. If not, a RangeError exception is raised[1]. [1] https://nodejs.org/api/n-api.html#n_api_napi_create_dataview Backport-PR-URL: #19447 PR-URL: #17869 Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>

The API is required that `byte_length + byte_offset` is less than or equal to the size in bytes of the array passed in. If not, a RangeError exception is raised[1]. [1] https://nodejs.org/api/n-api.html#n_api_napi_create_dataview Backport-PR-URL: #19265 PR-URL: #17869 Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. dont-land-on-v4.x node-api Issues and PRs related to the Node-API. labels Dec 26, 2017

romandev mentioned this pull request Dec 26, 2017

Implement an initial implementation of DataView class nodejs/node-addon-api#205

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evanlucas mentioned this pull request Jan 30, 2018

v9.5.0 release proposal #18464

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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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+                      "ERR_NAPI_INVALID_DATAVIEW_ARGS",
+                      "byte_offset + byte_length should be less than or "
+                      "equal to the size in bytes of the array passed in");
+                  return napi_set_last_error(env, napi_pending_exception);

n-api: throw RangeError in napi_create_dataview() with invalid range by romandev · Pull Request #17869 · nodejs/node · GitHub

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n-api: throw RangeError in napi_create_dataview() with invalid range - #17869

n-api: throw RangeError in napi_create_dataview() with invalid range#17869romandev wants to merge 1 commit intonodejs:masternodejs/node:masterfrom romandev:dataview_rangeromandev/node:dataview_rangeCopy head branch name to clipboard

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romandev commented Dec 26, 2017

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n-api: throw RangeError in napi_create_dataview() with invalid range#17869
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