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net/url: fix missing handling for opaque value in ResolveReference method

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The current implementation doesn't resolve as per spec RFC 3986 the case
where the base URL has an opaque value, and the reference doesn't have
either a scheme, authority or path. Currently, this specific case falls
back to the "abs_path" or "rel_path" cases, where the final path results
of the base_path being resolved relatively to the reference's, but since
the opaque value is stored independently, it needs a case of its own.

The algorith for resolving references is defined in RFC 3986 section 5.2.2:
https://www.rfc-editor.org/rfc/rfc3986.html#section-5.2.2

Fixes #66084

Change-Id: I82813e2333d8f2c4433c742f10e8c941888b55ac
GitHub-Last-Rev: cb96626988
GitHub-Pull-Request: golang/go#66415
Reviewed-on: https://go-review.googlesource.com/c/go/+/572915
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
This commit is contained in:
Fábio Mata 2024-03-19 22:58:26 +00:00 committed by Damien Neil
parent a8eaf56fe1
commit cf06b1f1db
2 changed files with 15 additions and 0 deletions
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7
src/net/url/url.go
View File

@ -1124,6 +1124,13 @@ func (u *URL) ResolveReference(ref *URL) *URL {
url.RawFragment = u.RawFragment
}
}
if ref.Path == "" && u.Opaque != "" {
url.Opaque = u.Opaque
url.User = nil
url.Host = ""
url.Path = ""
return &url
}
// The "abs_path" or "rel_path" cases.
url.Host = u.Host
url.User = u.User

8
src/net/url/url_test.go
View File

@ -1248,6 +1248,14 @@ var resolveReferenceTests = []struct {
// Empty path and query but with ForceQuery (issue 46033).
{"https://a/b/c/d;p?q#s", "?", "https://a/b/c/d;p?"},
// Opaque URLs (issue 66084).
{"https://foo.com/bar?a=b", "http:opaque", "http:opaque"},
{"http:opaque?x=y#zzz", "https:/foo?a=b#frag", "https:/foo?a=b#frag"},
{"http:opaque?x=y#zzz", "https:foo:bar", "https:foo:bar"},
{"http:opaque?x=y#zzz", "https:bar/baz?a=b#frag", "https:bar/baz?a=b#frag"},
{"http:opaque?x=y#zzz", "https://user@host:1234?a=b#frag", "https://user@host:1234?a=b#frag"},
{"http:opaque?x=y#zzz", "?a=b#frag", "http:opaque?a=b#frag"},
}
func TestResolveReference(t *testing.T) {