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Merge pull request #768 from poettering/resolved-localhost

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resolved: never attempt to resolve loopback addresses via DNS/LLMNR/mDNS
This commit is contained in:
Daniel Mack
2015-07-29 12:44:22 +02:00
parent 19a9bc49df 9436e8cae4
commit 3512af1706
2 changed files with 7 additions and 0 deletions
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src/resolve/resolved-dns-scope.c
+5
View File
@@ -313,6 +313,11 @@ DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, co
if (is_localhost(domain))
return DNS_SCOPE_NO;
/* Never resolve any loopback IP address via DNS, LLMNR or mDNS */
if (dns_name_endswith(domain, "127.in-addr.arpa") > 0 ||
dns_name_equal(domain, "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa") > 0)
return DNS_SCOPE_NO;
if (s->protocol == DNS_PROTOCOL_DNS) {
if (dns_name_endswith(domain, "254.169.in-addr.arpa") == 0 &&
dns_name_endswith(domain, "0.8.e.f.ip6.arpa") == 0 &&
src/test/test-dns-domain.c
+2
View File
@@ -247,6 +247,8 @@ static void test_dns_name_reverse_one(const char *address, const char *name) {
static void test_dns_name_reverse(void) {
test_dns_name_reverse_one("47.11.8.15", "15.8.11.47.in-addr.arpa");
test_dns_name_reverse_one("fe80::47", "7.4.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa");
test_dns_name_reverse_one("127.0.0.1", "1.0.0.127.in-addr.arpa");
test_dns_name_reverse_one("::1", "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa");
}
int main(int argc, char *argv[]) {