/*** 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; }