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/***
This file is part of systemd.
Copyright 2016 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <netinet/ip.h>
#include "sd-bus.h"
#include "af-list.h"
#include "alloc-util.h"
#include "bus-common-errors.h"
#include "dns-type.h"
#include "random-util.h"
#include "string-util.h"
#include "time-util.h"
#define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
static void prefix_random(const char *name, char **ret) {
uint64_t i, u;
char *m = NULL;
u = 1 + (random_u64() & 3);
for (i = 0; i < u; i++) {
_cleanup_free_ char *b = NULL;
char *x;
assert_se(asprintf(&b, "x%" PRIu64 "x", random_u64()));
x = strjoin(b, ".", name, NULL);
assert_se(x);
free(m);
m = x;
}
*ret = m;
}
static void test_rr_lookup(sd_bus *bus, const char *name, uint16_t type, const char *result) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *m = NULL;
int r;
/* If the name starts with a dot, we prefix one to three random labels */
if (startswith(name, ".")) {
prefix_random(name + 1, &m);
name = m;
}
assert_se(sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"ResolveRecord") >= 0);
assert_se(sd_bus_message_append(req, "isqqt", 0, name, DNS_CLASS_IN, type, UINT64_C(0)) >= 0);
r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
if (r < 0) {
assert_se(result);
assert_se(sd_bus_error_has_name(&error, result));
log_info("[OK] %s/%s resulted in <%s>.", name, dns_type_to_string(type), error.name);
} else {
assert_se(!result);
log_info("[OK] %s/%s succeeded.", name, dns_type_to_string(type));
}
}
static void test_hostname_lookup(sd_bus *bus, const char *name, int family, const char *result) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *m = NULL;
const char *af;
int r;
af = family == AF_UNSPEC ? "AF_UNSPEC" : af_to_name(family);
/* If the name starts with a dot, we prefix one to three random labels */
if (startswith(name, ".")) {
prefix_random(name + 1, &m);
name = m;
}
assert_se(sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"ResolveHostname") >= 0);
assert_se(sd_bus_message_append(req, "isit", 0, name, family, UINT64_C(0)) >= 0);
r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
if (r < 0) {
assert_se(result);
assert_se(sd_bus_error_has_name(&error, result));
log_info("[OK] %s/%s resulted in <%s>.", name, af, error.name);
} else {
assert_se(!result);
log_info("[OK] %s/%s succeeded.", name, af);
}
}
int main(int argc, char* argv[]) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
/* Note that this is a manual test as it requires:
*
* Full network access
* A DNSSEC capable DNS server
* That zones contacted are still set up as they were when I wrote this.
*/
assert_se(sd_bus_open_system(&bus) >= 0);
/* Normally signed */
test_rr_lookup(bus, "www.eurid.eu", DNS_TYPE_A, NULL);
test_hostname_lookup(bus, "www.eurid.eu", AF_UNSPEC, NULL);
test_rr_lookup(bus, "sigok.verteiltesysteme.net", DNS_TYPE_A, NULL);
test_hostname_lookup(bus, "sigok.verteiltesysteme.net", AF_UNSPEC, NULL);
/* Normally signed, NODATA */
test_rr_lookup(bus, "www.eurid.eu", DNS_TYPE_RP, BUS_ERROR_NO_SUCH_RR);
test_rr_lookup(bus, "sigok.verteiltesysteme.net", DNS_TYPE_RP, BUS_ERROR_NO_SUCH_RR);
/* Invalid signature */
test_rr_lookup(bus, "sigfail.verteiltesysteme.net", DNS_TYPE_A, BUS_ERROR_DNSSEC_FAILED);
test_hostname_lookup(bus, "sigfail.verteiltesysteme.net", AF_INET, BUS_ERROR_DNSSEC_FAILED);
/* Invalid signature, RSA, wildcard */
test_rr_lookup(bus, ".wilda.rhybar.0skar.cz", DNS_TYPE_A, BUS_ERROR_DNSSEC_FAILED);
test_hostname_lookup(bus, ".wilda.rhybar.0skar.cz", AF_INET, BUS_ERROR_DNSSEC_FAILED);
/* Invalid signature, ECDSA, wildcard */
test_rr_lookup(bus, ".wilda.rhybar.ecdsa.0skar.cz", DNS_TYPE_A, BUS_ERROR_DNSSEC_FAILED);
test_hostname_lookup(bus, ".wilda.rhybar.ecdsa.0skar.cz", AF_INET, BUS_ERROR_DNSSEC_FAILED);
/* NXDOMAIN in NSEC domain */
test_rr_lookup(bus, "hhh.nasa.gov", DNS_TYPE_A, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "hhh.nasa.gov", AF_UNSPEC, _BUS_ERROR_DNS "NXDOMAIN");
/* wildcard, NSEC zone */
test_rr_lookup(bus, ".wilda.nsec.0skar.cz", DNS_TYPE_A, NULL);
test_hostname_lookup(bus, ".wilda.nsec.0skar.cz", AF_INET, NULL);
/* wildcard, NSEC zone, NODATA */
test_rr_lookup(bus, ".wilda.nsec.0skar.cz", DNS_TYPE_RP, BUS_ERROR_NO_SUCH_RR);
/* wildcard, NSEC3 zone */
test_rr_lookup(bus, ".wilda.0skar.cz", DNS_TYPE_A, NULL);
test_hostname_lookup(bus, ".wilda.0skar.cz", AF_INET, NULL);
/* wildcard, NSEC3 zone, NODATA */
test_rr_lookup(bus, ".wilda.0skar.cz", DNS_TYPE_RP, BUS_ERROR_NO_SUCH_RR);
/* wildcard, NSEC zone, CNAME */
test_rr_lookup(bus, ".wild.nsec.0skar.cz", DNS_TYPE_A, NULL);
test_hostname_lookup(bus, ".wild.nsec.0skar.cz", AF_UNSPEC, NULL);
test_hostname_lookup(bus, ".wild.nsec.0skar.cz", AF_INET, NULL);
/* wildcard, NSEC zone, NODATA, CNAME */
test_rr_lookup(bus, ".wild.nsec.0skar.cz", DNS_TYPE_RP, BUS_ERROR_NO_SUCH_RR);
/* wildcard, NSEC3 zone, CNAME */
test_rr_lookup(bus, ".wild.0skar.cz", DNS_TYPE_A, NULL);
test_hostname_lookup(bus, ".wild.0skar.cz", AF_UNSPEC, NULL);
test_hostname_lookup(bus, ".wild.0skar.cz", AF_INET, NULL);
/* wildcard, NSEC3 zone, NODATA, CNAME */
test_rr_lookup(bus, ".wild.0skar.cz", DNS_TYPE_RP, BUS_ERROR_NO_SUCH_RR);
/* NODATA due to empty non-terminal in NSEC domain */
test_rr_lookup(bus, "herndon.nasa.gov", DNS_TYPE_A, BUS_ERROR_NO_SUCH_RR);
test_hostname_lookup(bus, "herndon.nasa.gov", AF_UNSPEC, BUS_ERROR_NO_SUCH_RR);
test_hostname_lookup(bus, "herndon.nasa.gov", AF_INET, BUS_ERROR_NO_SUCH_RR);
test_hostname_lookup(bus, "herndon.nasa.gov", AF_INET6, BUS_ERROR_NO_SUCH_RR);
/* NXDOMAIN in NSEC root zone: */
test_rr_lookup(bus, "jasdhjas.kjkfgjhfjg", DNS_TYPE_A, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "jasdhjas.kjkfgjhfjg", AF_UNSPEC, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "jasdhjas.kjkfgjhfjg", AF_INET, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "jasdhjas.kjkfgjhfjg", AF_INET6, _BUS_ERROR_DNS "NXDOMAIN");
/* NXDOMAIN in NSEC3 .com zone: */
test_rr_lookup(bus, "kjkfgjhfjgsdfdsfd.com", DNS_TYPE_A, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "kjkfgjhfjgsdfdsfd.com", AF_INET, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "kjkfgjhfjgsdfdsfd.com", AF_INET6, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, "kjkfgjhfjgsdfdsfd.com", AF_UNSPEC, _BUS_ERROR_DNS "NXDOMAIN");
/* Unsigned A */
test_rr_lookup(bus, "poettering.de", DNS_TYPE_A, NULL);
test_rr_lookup(bus, "poettering.de", DNS_TYPE_AAAA, NULL);
test_hostname_lookup(bus, "poettering.de", AF_UNSPEC, NULL);
test_hostname_lookup(bus, "poettering.de", AF_INET, NULL);
test_hostname_lookup(bus, "poettering.de", AF_INET6, NULL);
#ifdef HAVE_LIBIDN
/* Unsigned A with IDNA conversion necessary */
test_hostname_lookup(bus, "pöttering.de", AF_UNSPEC, NULL);
test_hostname_lookup(bus, "pöttering.de", AF_INET, NULL);
test_hostname_lookup(bus, "pöttering.de", AF_INET6, NULL);
#endif
/* DNAME, pointing to NXDOMAIN */
test_rr_lookup(bus, ".ireallyhpoethisdoesnexist.xn--kprw13d.", DNS_TYPE_A, _BUS_ERROR_DNS "NXDOMAIN");
test_rr_lookup(bus, ".ireallyhpoethisdoesnexist.xn--kprw13d.", DNS_TYPE_RP, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, ".ireallyhpoethisdoesntexist.xn--kprw13d.", AF_UNSPEC, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, ".ireallyhpoethisdoesntexist.xn--kprw13d.", AF_INET, _BUS_ERROR_DNS "NXDOMAIN");
test_hostname_lookup(bus, ".ireallyhpoethisdoesntexist.xn--kprw13d.", AF_INET6, _BUS_ERROR_DNS "NXDOMAIN");
return 0;
}
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