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resolve: also compare port and SNI in dns_server_find()

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This commit is contained in:
Yu Watanabe 2020-07-13 09:05:15 +09:00
parent da9de7385a
commit 1b86009298
5 changed files with 13 additions and 6 deletions
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5
src/resolve/resolved-conf.c
View File

@ -41,6 +41,9 @@ static int manager_add_dns_server_by_string(Manager *m, DnsServerType type, cons
if (r < 0)
return r;
if (IN_SET(port, 53, 853))
port = 0;
/* Silently filter out 0.0.0.0 and 127.0.0.53 (our own stub DNS listener) */
if (!dns_server_address_valid(family, &address))
return 0;
@ -51,7 +54,7 @@ static int manager_add_dns_server_by_string(Manager *m, DnsServerType type, cons
port = 0;
/* Filter out duplicates */
s = dns_server_find(manager_get_first_dns_server(m, type), family, &address, ifindex);
s = dns_server_find(manager_get_first_dns_server(m, type), family, &address, port, ifindex, server_name);
if (s) {
/*
* Drop the marker. This is used to find the servers

8
src/resolve/resolved-dns-server.c
View File

@ -666,11 +666,15 @@ void dns_server_mark_all(DnsServer *first) {
dns_server_mark_all(first->servers_next);
}
DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr, int ifindex) {
DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr, uint16_t port, int ifindex, const char *name) {
DnsServer *s;
LIST_FOREACH(servers, s, first)
if (s->family == family && in_addr_equal(family, &s->address, in_addr) > 0 && s->ifindex == ifindex)
if (s->family == family &&
in_addr_equal(family, &s->address, in_addr) > 0 &&
s->port == port &&
s->ifindex == ifindex &&
streq_ptr(s->server_name, name))
return s;
return NULL;

2
src/resolve/resolved-dns-server.h
View File

@ -131,7 +131,7 @@ bool dns_server_dnssec_supported(DnsServer *server);
void dns_server_warn_downgrade(DnsServer *server);
DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr, int ifindex);
DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr, uint16_t port, int ifindex, const char *name);
void dns_server_unlink_all(DnsServer *first);
void dns_server_unlink_marked(DnsServer *first);

2
src/resolve/resolved-link-bus.c
View File

@ -281,7 +281,7 @@ int bus_link_method_set_dns_servers(sd_bus_message *message, void *userdata, sd_
for (i = 0; i < n; i++) {
DnsServer *s;
s = dns_server_find(l->dns_servers, dns[i].family, &dns[i].address, 0);
s = dns_server_find(l->dns_servers, dns[i].family, &dns[i].address, 0, 0, NULL);
if (s)
dns_server_move_back_and_unmark(s);
else {

2
src/resolve/resolved-link.c
View File

@ -263,7 +263,7 @@ static int link_update_dns_server_one(Link *l, const char *name) {
if (r < 0)
return r;
s = dns_server_find(l->dns_servers, family, &a, 0);
s = dns_server_find(l->dns_servers, family, &a, 0, 0, NULL);
if (s) {
dns_server_move_back_and_unmark(s);
return 0;