195 lines
4.8 KiB
C
195 lines
4.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include "alloc-util.h"
|
|
#include "dns-domain.h"
|
|
#include "resolved-dns-search-domain.h"
|
|
#include "resolved-link.h"
|
|
#include "resolved-manager.h"
|
|
|
|
int dns_search_domain_new(
|
|
Manager *m,
|
|
DnsSearchDomain **ret,
|
|
DnsSearchDomainType type,
|
|
Link *l,
|
|
const char *name) {
|
|
|
|
_cleanup_free_ char *normalized = NULL;
|
|
DnsSearchDomain *d;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert((type == DNS_SEARCH_DOMAIN_LINK) == !!l);
|
|
assert(name);
|
|
|
|
r = dns_name_normalize(name, 0, &normalized);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (l) {
|
|
if (l->n_search_domains >= LINK_SEARCH_DOMAINS_MAX)
|
|
return -E2BIG;
|
|
} else {
|
|
if (m->n_search_domains >= MANAGER_SEARCH_DOMAINS_MAX)
|
|
return -E2BIG;
|
|
}
|
|
|
|
d = new0(DnsSearchDomain, 1);
|
|
if (!d)
|
|
return -ENOMEM;
|
|
|
|
d->n_ref = 1;
|
|
d->manager = m;
|
|
d->type = type;
|
|
d->name = TAKE_PTR(normalized);
|
|
|
|
switch (type) {
|
|
|
|
case DNS_SEARCH_DOMAIN_LINK:
|
|
d->link = l;
|
|
LIST_APPEND(domains, l->search_domains, d);
|
|
l->n_search_domains++;
|
|
break;
|
|
|
|
case DNS_SERVER_SYSTEM:
|
|
LIST_APPEND(domains, m->search_domains, d);
|
|
m->n_search_domains++;
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Unknown search domain type");
|
|
}
|
|
|
|
d->linked = true;
|
|
|
|
if (ret)
|
|
*ret = d;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static DnsSearchDomain* dns_search_domain_free(DnsSearchDomain *d) {
|
|
assert(d);
|
|
|
|
free(d->name);
|
|
return mfree(d);
|
|
}
|
|
|
|
DEFINE_TRIVIAL_REF_UNREF_FUNC(DnsSearchDomain, dns_search_domain, dns_search_domain_free);
|
|
|
|
void dns_search_domain_unlink(DnsSearchDomain *d) {
|
|
assert(d);
|
|
assert(d->manager);
|
|
|
|
if (!d->linked)
|
|
return;
|
|
|
|
switch (d->type) {
|
|
|
|
case DNS_SEARCH_DOMAIN_LINK:
|
|
assert(d->link);
|
|
assert(d->link->n_search_domains > 0);
|
|
LIST_REMOVE(domains, d->link->search_domains, d);
|
|
d->link->n_search_domains--;
|
|
break;
|
|
|
|
case DNS_SEARCH_DOMAIN_SYSTEM:
|
|
assert(d->manager->n_search_domains > 0);
|
|
LIST_REMOVE(domains, d->manager->search_domains, d);
|
|
d->manager->n_search_domains--;
|
|
break;
|
|
}
|
|
|
|
d->linked = false;
|
|
|
|
dns_search_domain_unref(d);
|
|
}
|
|
|
|
void dns_search_domain_move_back_and_unmark(DnsSearchDomain *d) {
|
|
DnsSearchDomain *tail;
|
|
|
|
assert(d);
|
|
|
|
if (!d->marked)
|
|
return;
|
|
|
|
d->marked = false;
|
|
|
|
if (!d->linked || !d->domains_next)
|
|
return;
|
|
|
|
switch (d->type) {
|
|
|
|
case DNS_SEARCH_DOMAIN_LINK:
|
|
assert(d->link);
|
|
LIST_FIND_TAIL(domains, d, tail);
|
|
LIST_REMOVE(domains, d->link->search_domains, d);
|
|
LIST_INSERT_AFTER(domains, d->link->search_domains, tail, d);
|
|
break;
|
|
|
|
case DNS_SEARCH_DOMAIN_SYSTEM:
|
|
LIST_FIND_TAIL(domains, d, tail);
|
|
LIST_REMOVE(domains, d->manager->search_domains, d);
|
|
LIST_INSERT_AFTER(domains, d->manager->search_domains, tail, d);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Unknown search domain type");
|
|
}
|
|
}
|
|
|
|
void dns_search_domain_unlink_all(DnsSearchDomain *first) {
|
|
DnsSearchDomain *next;
|
|
|
|
if (!first)
|
|
return;
|
|
|
|
next = first->domains_next;
|
|
dns_search_domain_unlink(first);
|
|
|
|
dns_search_domain_unlink_all(next);
|
|
}
|
|
|
|
void dns_search_domain_unlink_marked(DnsSearchDomain *first) {
|
|
DnsSearchDomain *next;
|
|
|
|
if (!first)
|
|
return;
|
|
|
|
next = first->domains_next;
|
|
|
|
if (first->marked)
|
|
dns_search_domain_unlink(first);
|
|
|
|
dns_search_domain_unlink_marked(next);
|
|
}
|
|
|
|
void dns_search_domain_mark_all(DnsSearchDomain *first) {
|
|
if (!first)
|
|
return;
|
|
|
|
first->marked = true;
|
|
dns_search_domain_mark_all(first->domains_next);
|
|
}
|
|
|
|
int dns_search_domain_find(DnsSearchDomain *first, const char *name, DnsSearchDomain **ret) {
|
|
DnsSearchDomain *d;
|
|
int r;
|
|
|
|
assert(name);
|
|
assert(ret);
|
|
|
|
LIST_FOREACH(domains, d, first) {
|
|
|
|
r = dns_name_equal(name, d->name);
|
|
if (r < 0)
|
|
return r;
|
|
if (r > 0) {
|
|
*ret = d;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
*ret = NULL;
|
|
return 0;
|
|
}
|