src: add a condition if the argument of `DomainToUnicode` is empty #49097

pluris · 2023-08-10T16:16:56Z

Add an empty check for the input, like DomainToASCII in the line below.

Lines 79 to 82 in f1b3ade

    
           std::string input = Utf8Value(env->isolate(), args[0]).ToString(); 
        
           if (input.empty()) { 
        
             return args.GetReturnValue().Set(FIXED_ONE_BYTE_STRING(env->isolate(), "")); 
        
           }

Refs : #46410

nodejs-github-bot · 2023-08-10T16:17:01Z

Review requested:

@nodejs/url

anonrig

What's the goal of this pull request? Can you provide an example and update your PR with a test?

pluris · 2023-08-11T16:44:01Z

@anonrig Thank you for your comments.
I referred to the IDNA Mapping Table from the WhatWG URL.
I checked the handling of empty strings,
I saw that DomainToASCII and DomainToUnicode should be treated the same.
Therefore, in my opinion, it is in DomainToASCII, but it seems to be missing in DomainToUnicode, so I added it.

IDNA Mapping Table : https://www.unicode.org/reports/tr46/#TableDerivationStep6
DomainToASCII : https://www.unicode.org/reports/tr46/#ToUnicode
DomainToUnicode : https://www.unicode.org/reports/tr46/#ToASCII
WhatWG URL : https://url.spec.whatwg.org/
The same considerations as with domain-to-ASCII apply.

anonrig · 2023-08-11T16:46:06Z

@pluris It already returns an empty string when an empty string is passed. It seems like this is an optimization for performance for the empty input to perform faster.

Welcome to Node.js v20.5.0.
Type ".help" for more information.
> require('url').domainToUnicode('')
''

anonrig · 2023-08-11T16:46:27Z

src/node_url.cc

+    return args.GetReturnValue().Set(
+        String::NewFromUtf8(env->isolate(), "").ToLocalChecked());


Suggested change

return args.GetReturnValue().Set(

String::NewFromUtf8(env->isolate(), "").ToLocalChecked());

return args.GetReturnValue().Set(FIXED_ONE_BYTE_STRING(env->isolate(), ""));

Can you apply the changes?

@anonrig Oh, I'm so sorry. I checked this comment too late. I thought I fixed it, but maybe I didn't add a commit...
It seems that the PR has been merged, but I will fix it.

pluris · 2023-08-11T16:56:50Z

@anonrig
If so, would it be better to do the same by removing the line below?

node/src/node_url.cc

Lines 79 to 82 in f1b3ade

    
           std::string input = Utf8Value(env->isolate(), args[0]).ToString(); 
        
           if (input.empty()) { 
        
             return args.GetReturnValue().Set(FIXED_ONE_BYTE_STRING(env->isolate(), "")); 
        
           }

anonrig · 2023-08-11T16:59:27Z

@pluris I don't think removing it would make a difference since it is a single branch (in c++). So, personally I'm fine with adding it to domainToUnicode as well.

pluris · 2023-08-11T17:07:55Z

@anonrig Thank you for your opinion. It helped me a lot. 😄

nodejs-github-bot · 2023-08-11T17:18:59Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53205/

anonrig · 2023-08-11T21:52:31Z

@pluris Can you rebase from main and force-push?

pluris · 2023-08-12T00:55:21Z

@anonrig Yes, I did rebase and force-push.

nodejs-github-bot · 2023-08-12T01:02:05Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53216/

nodejs-github-bot · 2023-08-12T21:13:47Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53253/

nodejs-github-bot · 2023-08-16T14:08:55Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53379/

nodejs-github-bot · 2023-08-17T11:51:39Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53402/

nodejs-github-bot · 2023-08-18T13:39:53Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53427/

nodejs-github-bot · 2023-08-20T03:14:44Z

CI: https://ci.nodejs.org/job/node-test-pull-request/53457/

nodejs-github-bot · 2023-08-20T09:55:45Z

Landed in 45e5ec8

PR-URL: #49336 Refs: #49097 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Debadree Chatterjee <[email protected]>

PR-URL: #49097 Refs: #46410 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Deokjin Kim <[email protected]>

PR-URL: #49336 Refs: #49097 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Debadree Chatterjee <[email protected]>

PR-URL: nodejs#49336 Refs: nodejs#49097 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Debadree Chatterjee <[email protected]>

PR-URL: #49097 Refs: #46410 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Deokjin Kim <[email protected]>

PR-URL: nodejs/node#49097 Refs: nodejs/node#46410 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Deokjin Kim <[email protected]>

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src: add a condition if the argument of DomainToUnicode is empty

adf338b

pluris force-pushed the fix/check_empty_input branch from 4e380fd to adf338b Compare August 18, 2023 04:18

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src: modify code for empty string #49336

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src: add a condition if the argument of DomainToUnicode is empty

4a9ae31

PR-URL: #49097 Refs: #46410 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Deokjin Kim <[email protected]>

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v20.7.0 proposal #49592

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src: add a condition if the argument of DomainToUnicode is empty

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PR-URL: #49097 Refs: #46410 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Deokjin Kim <[email protected]>

targos mentioned this pull request Nov 28, 2023

v18.19.0 release proposal #50953

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src: add a condition if the argument of `DomainToUnicode` is empty #49097

src: add a condition if the argument of `DomainToUnicode` is empty #49097

pluris commented Aug 10, 2023 •

edited

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	std::string input = Utf8Value(env->isolate(), args[0]).ToString();
	if (input.empty()) {
	return args.GetReturnValue().Set(FIXED_ONE_BYTE_STRING(env->isolate(), ""));
	}

		return args.GetReturnValue().Set(
		String::NewFromUtf8(env->isolate(), "").ToLocalChecked());

src: add a condition if the argument of DomainToUnicode is empty #49097

src: add a condition if the argument of DomainToUnicode is empty #49097

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src: add a condition if the argument of `DomainToUnicode` is empty #49097

src: add a condition if the argument of `DomainToUnicode` is empty #49097

pluris commented Aug 10, 2023 •

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