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[dns] match DNS name with specific domain (#6114)

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This commit adds:
- a new method Dns::Name::IsSubDomainOf that matches a DNS name with
given domain. This is useful for SRP and DNS-SD server to verify if a
RR is in our authorized domain.
- domain checks for names in a SRP update to the SRP server.
This commit is contained in:
kangping
2021-01-29 07:22:09 -08:00
committed by GitHub
parent 46f796d4f0
commit 4bb22d78de
5 changed files with 135 additions and 39 deletions
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tests/unit/test_dns.cpp
+37
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@@ -145,6 +145,43 @@ void TestDnsName(void)
message->SetOffset(0);
printf("----------------------------------------------------------------\n");
printf("Verify domain name match:\n");
{
const char *subDomain;
const char *domain;
subDomain = "my-service._ipps._tcp.local.";
domain = "local.";
VerifyOrQuit(Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() failed");
subDomain = "my-service._ipps._tcp.local";
domain = "local.";
VerifyOrQuit(Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() failed");
subDomain = "my-service._ipps._tcp.local.";
domain = "local";
VerifyOrQuit(Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() failed");
subDomain = "my-service._ipps._tcp.local";
domain = "local";
VerifyOrQuit(Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() failed");
subDomain = "my-service._ipps._tcp.default.service.arpa.";
domain = "default.service.arpa.";
VerifyOrQuit(Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() failed");
subDomain = "my-service._ipps._tcp.default.service.arpa.";
domain = "service.arpa.";
VerifyOrQuit(Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() failed");
// Verify it doesn't match a portion of a label.
subDomain = "my-service._ipps._tcp.default.service.arpa.";
domain = "vice.arpa.";
VerifyOrQuit(!Dns::Name::IsSubDomainOf(subDomain, domain), "Name::IsSubDomainOf() succeed");
}
printf("----------------------------------------------------------------\n");
printf("Append names, check encoded bytes, parse name and read labels:\n");