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Pull request 2017: 6226 legacy rewrite sort

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Merge in DNS/adguard-home from 6226-legacy-rewrite-sort to master

Updates #6226.

Squashed commit of the following:

commit e47e8c9088d42dcf636101db94bff82b3b03fd2e
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Sep 19 17:16:43 2023 +0300

    all: imp log of changes

commit e551a745df2dc95b82ef562d6ff677217f3b88a0
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Sep 19 16:29:46 2023 +0300

    all: fix alphabetical order

commit 2ce10c7346e2e4fc61b973f48ab0b80bbc95e2a5
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Sep 19 16:28:08 2023 +0300

    all: log changes

commit 545dd7039b6440e87b08f8d0c0982e0421a566f7
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Sep 19 16:25:13 2023 +0300

    filtering: fix sort
This commit is contained in:
Eugene Burkov
2023-09-19 17:58:37 +03:00
parent 5c20bf7cd4
commit af38476efa
3 changed files with 36 additions and 11 deletions
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21
internal/filtering/rewrites.go
View File

@@ -118,23 +118,22 @@ func matchDomainWildcard(host, wildcard string) (ok bool) {
// 2. wildcard > exact;
// 3. lower level wildcard > higher level wildcard;
func (rw *LegacyRewrite) Compare(b *LegacyRewrite) (res int) {
if rw.Type == dns.TypeCNAME && b.Type != dns.TypeCNAME {
return -1
} else if rw.Type != dns.TypeCNAME && b.Type == dns.TypeCNAME {
if rw.Type == dns.TypeCNAME {
if b.Type != dns.TypeCNAME {
return -1
}
} else if b.Type == dns.TypeCNAME {
return 1
}
aIsWld, bIsWld := isWildcard(rw.Domain), isWildcard(b.Domain)
if aIsWld == bIsWld {
if aIsWld, bIsWld := isWildcard(rw.Domain), isWildcard(b.Domain); aIsWld == bIsWld {
// Both are either wildcards or both aren't.
return len(rw.Domain) - len(b.Domain)
}
if aIsWld {
return len(b.Domain) - len(rw.Domain)
} else if aIsWld {
return 1
} else {
return -1
}
return -1
}
// prepareRewrites normalizes and validates all legacy DNS rewrites.