-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
s->family = family;
s->resend_timeout = MULTICAST_RESEND_TIMEOUT_MIN_USEC;
- s->dnssec_mode = _DNSSEC_MODE_INVALID;
-
if (protocol == DNS_PROTOCOL_DNS) {
/* Copy DNSSEC mode from the link if it is set there,
* otherwise take the manager's DNSSEC mode. Note that
s->dnssec_mode = link_get_dnssec_mode(l);
else
s->dnssec_mode = manager_get_dnssec_mode(m);
- }
+ } else
+ s->dnssec_mode = DNSSEC_NO;
LIST_PREPEND(scopes, m->dns_scopes, s);
union sockaddr_union sa = {};
socklen_t salen;
static const int one = 1;
- int ret, r;
+ int ret, r, ifindex;
assert(s);
assert(family == AF_UNSPEC);
assert(!address);
+ ifindex = dns_server_ifindex(server);
+
sa.sa.sa_family = server->family;
if (server->family == AF_INET) {
sa.in.sin_port = htobe16(port);
} else if (server->family == AF_INET6) {
sa.in6.sin6_port = htobe16(port);
sa.in6.sin6_addr = server->address.in6;
- sa.in6.sin6_scope_id = s->link ? s->link->ifindex : 0;
+ sa.in6.sin6_scope_id = ifindex;
salen = sizeof(sa.in6);
} else
return -EAFNOSUPPORT;
assert(address);
sa.sa.sa_family = family;
+ ifindex = s->link ? s->link->ifindex : 0;
if (family == AF_INET) {
sa.in.sin_port = htobe16(port);
} else if (family == AF_INET6) {
sa.in6.sin6_port = htobe16(port);
sa.in6.sin6_addr = address->in6;
- sa.in6.sin6_scope_id = s->link ? s->link->ifindex : 0;
+ sa.in6.sin6_scope_id = ifindex;
salen = sizeof(sa.in6);
} else
return -EAFNOSUPPORT;
}
if (s->link) {
- uint32_t ifindex = htobe32(s->link->ifindex);
+ be32_t ifindex_be = htobe32(ifindex);
if (sa.sa.sa_family == AF_INET) {
- r = setsockopt(fd, IPPROTO_IP, IP_UNICAST_IF, &ifindex, sizeof(ifindex));
+ r = setsockopt(fd, IPPROTO_IP, IP_UNICAST_IF, &ifindex_be, sizeof(ifindex_be));
if (r < 0)
return -errno;
} else if (sa.sa.sa_family == AF_INET6) {
- r = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_IF, &ifindex, sizeof(ifindex));
+ r = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_IF, &ifindex_be, sizeof(ifindex_be));
if (r < 0)
return -errno;
}
}
}
-int dns_scope_good_key(DnsScope *s, DnsResourceKey *key) {
+bool dns_scope_good_key(DnsScope *s, const DnsResourceKey *key) {
+ int key_family;
+
assert(s);
assert(key);
* this scope. Note that this call assumes as fully qualified
* name, i.e. the search suffixes already appended. */
+ if (key->class != DNS_CLASS_IN)
+ return false;
+
if (s->protocol == DNS_PROTOCOL_DNS) {
/* On classic DNS, looking up non-address RRs is always
* that those should be resolved via LLMNR or search
* path only, and should not be leaked onto the
* internet. */
- return !(dns_name_is_single_label(DNS_RESOURCE_KEY_NAME(key)) ||
- dns_name_is_root(DNS_RESOURCE_KEY_NAME(key)));
+ return !(dns_name_is_single_label(dns_resource_key_name(key)) ||
+ dns_name_is_root(dns_resource_key_name(key)));
}
/* On mDNS and LLMNR, send A and AAAA queries only on the
* respective scopes */
- if (s->family == AF_INET && key->class == DNS_CLASS_IN && key->type == DNS_TYPE_AAAA)
- return false;
-
- if (s->family == AF_INET6 && key->class == DNS_CLASS_IN && key->type == DNS_TYPE_A)
- return false;
+ key_family = dns_type_to_af(key->type);
+ if (key_family < 0)
+ return true;
- return true;
+ return key_family == s->family;
}
static int dns_scope_multicast_membership(DnsScope *s, bool b, struct in_addr in, struct in6_addr in6) {
}
int dns_scope_llmnr_membership(DnsScope *s, bool b) {
+ assert(s);
if (s->protocol != DNS_PROTOCOL_LLMNR)
return 0;
}
int dns_scope_mdns_membership(DnsScope *s, bool b) {
+ assert(s);
if (s->protocol != DNS_PROTOCOL_MDNS)
return 0;
DnsPacket **ret) {
_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
- unsigned i;
int r;
assert(s);
assert(ret);
- if ((!q || q->n_keys <= 0)
- && (!answer || answer->n_rrs <= 0)
- && (!soa || soa->n_rrs <= 0))
+ if (dns_question_isempty(q) &&
+ dns_answer_isempty(answer) &&
+ dns_answer_isempty(soa))
return -EINVAL;
r = dns_packet_new(&p, s->protocol, 0);
0 /* (cd) */,
rcode));
- if (q) {
- for (i = 0; i < q->n_keys; i++) {
- r = dns_packet_append_key(p, q->keys[i], NULL);
- if (r < 0)
- return r;
- }
-
- DNS_PACKET_HEADER(p)->qdcount = htobe16(q->n_keys);
- }
-
- if (answer) {
- for (i = 0; i < answer->n_rrs; i++) {
- r = dns_packet_append_rr(p, answer->items[i].rr, NULL, NULL);
- if (r < 0)
- return r;
- }
-
- DNS_PACKET_HEADER(p)->ancount = htobe16(answer->n_rrs);
- }
+ r = dns_packet_append_question(p, q);
+ if (r < 0)
+ return r;
+ DNS_PACKET_HEADER(p)->qdcount = htobe16(dns_question_size(q));
- if (soa) {
- for (i = 0; i < soa->n_rrs; i++) {
- r = dns_packet_append_rr(p, soa->items[i].rr, NULL, NULL);
- if (r < 0)
- return r;
- }
+ r = dns_packet_append_answer(p, answer);
+ if (r < 0)
+ return r;
+ DNS_PACKET_HEADER(p)->ancount = htobe16(dns_answer_size(answer));
- DNS_PACKET_HEADER(p)->arcount = htobe16(soa->n_rrs);
- }
+ r = dns_packet_append_answer(p, soa);
+ if (r < 0)
+ return r;
+ DNS_PACKET_HEADER(p)->arcount = htobe16(dns_answer_size(soa));
*ret = p;
p = NULL;
return;
}
- assert(p->question->n_keys == 1);
+ assert(dns_question_size(p->question) == 1);
key = p->question->keys[0];
- r = dns_zone_lookup(&s->zone, key, &answer, &soa, &tentative);
+ r = dns_zone_lookup(&s->zone, key, 0, &answer, &soa, &tentative);
if (r < 0) {
log_debug_errno(r, "Failed to lookup key: %m");
return;
return dns_name_is_single_label(name);
}
+
+bool dns_scope_network_good(DnsScope *s) {
+ /* Checks whether the network is in good state for lookups on this scope. For mDNS/LLMNR/Classic DNS scopes
+ * bound to links this is easy, as they don't even exist if the link isn't in a suitable state. For the global
+ * DNS scope we check whether there are any links that are up and have an address. */
+
+ if (s->link)
+ return true;
+
+ return manager_routable(s->manager, AF_UNSPEC);
+}
+
+int dns_scope_ifindex(DnsScope *s) {
+ assert(s);
+
+ if (s->link)
+ return s->link->ifindex;
+
+ return 0;
+}
projects / thirdparty / systemd.git / blobdiff