url: treat special characters in hostnames more strictly in url.parse() #45046
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lpinca
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Oct 18, 2022
lib/url.js
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| this.host = rest.slice(start, nonHost); | ||
| // WHATWG URL removes tabs, newlines, and carriage returns. Let's do that too. |
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It does it everywhere, not only on the host component. I'm not sure if url.parse() should do the same and how many breaking changes are tolerable.
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It does it everywhere, not only on the host component. I'm not sure if
url.parse()should do the same and how many breaking changes are tolerable.
I agree in principle, but I think narrowly scoping to hostname to start (and maybe even stopping there) makes a lot of sense as hostname spoofing is a bigger security concern than path or scheme spoofing. (Or at least that's my assumption. If anyone else thinks that's incorrect, I'm open to being persuaded.)
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BridgeAR
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Oct 18, 2022
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@Trott Can we run a benchmark to see the performance impact of this pull request? |
Sure. But I think I'm OK if |
jasnell
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Oct 18, 2022
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when this goes out in a release, let's be sure to include details on the performance impact of these changes. The perf regression is a key reason why these kinds of changes weren't made before. What we're essentially saying is that we are no longer committing to maintaining the same perf on url.parse().
anonrig
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Oct 18, 2022
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To unbreak one of the benchmark URL, we use toAscii()/punycode when we find % in a domain, like WHATWG URL. |
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Here are all 55 of the three-star/highest-confidence results from the benchmark run. 😱 |
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Benchmark with
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This was referenced Oct 20, 2022
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Throw if ^, |, and some other special characters are in the hostname, similar to WHATWG URL. Use punycode/toAscii when % appears in a hostname, like WHATWG URL.
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Benchmark on latest changes: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/1206/ |
watilde
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Nov 3, 2022
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Throw if ^, |, and some other special characters are in the hostname, similar to WHATWG URL.