337eebb936be1da1215535e866965ce54c82d755Lennart Poettering

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include <arpa/inet.h>

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include <netinet/in.h>

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include <sys/socket.h>

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include "alloc-util.h"

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include "resolved-dns-dnssec.h"

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include "resolved-dns-rr.h"

82659fd7571bda0f3dce9755b89a23c411d53ddaLennart Poettering#include "string-util.h"

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering#include "hexdecoct.h"

337eebb936be1da1215535e866965ce54c82d755Lennart Poettering

337eebb936be1da1215535e866965ce54c82d755Lennart Poetteringstatic void test_dnssec_verify_rrset2(void) {

static const uint8_t signature_blob[] = {

0x48, 0x45, 0xc8, 0x8b, 0xc0, 0x14, 0x92, 0xf5, 0x15, 0xc6, 0x84, 0x9d, 0x2f, 0xe3, 0x32, 0x11,

0x7d, 0xf1, 0xe6, 0x87, 0xb9, 0x42, 0xd3, 0x8b, 0x9e, 0xaf, 0x92, 0x31, 0x0a, 0x53, 0xad, 0x8b,

0xa7, 0x5c, 0x83, 0x39, 0x8c, 0x28, 0xac, 0xce, 0x6e, 0x9c, 0x18, 0xe3, 0x31, 0x16, 0x6e, 0xca,

0x38, 0x31, 0xaf, 0xd9, 0x94, 0xf1, 0x84, 0xb1, 0xdf, 0x5a, 0xc2, 0x73, 0x22, 0xf6, 0xcb, 0xa2,

0xe7, 0x8c, 0x77, 0x0c, 0x74, 0x2f, 0xc2, 0x13, 0xb0, 0x93, 0x51, 0xa9, 0x4f, 0xae, 0x0a, 0xda,

0x45, 0xcc, 0xfd, 0x43, 0x99, 0x36, 0x9a, 0x0d, 0x21, 0xe0, 0xeb, 0x30, 0x65, 0xd4, 0xa0, 0x27,

0x37, 0x3b, 0xe4, 0xc1, 0xc5, 0xa1, 0x2a, 0xd1, 0x76, 0xc4, 0x7e, 0x64, 0x0e, 0x5a, 0xa6, 0x50,

0x24, 0xd5, 0x2c, 0xcc, 0x6d, 0xe5, 0x37, 0xea, 0xbd, 0x09, 0x34, 0xed, 0x24, 0x06, 0xa1, 0x22,

};

static const uint8_t dnskey_blob[] = {

0x03, 0x01, 0x00, 0x01, 0xc3, 0x7f, 0x1d, 0xd1, 0x1c, 0x97, 0xb1, 0x13, 0x34, 0x3a, 0x9a, 0xea,

0xee, 0xd9, 0x5a, 0x11, 0x1b, 0x17, 0xc7, 0xe3, 0xd4, 0xda, 0x20, 0xbc, 0x5d, 0xba, 0x74, 0xe3,

0x37, 0x99, 0xec, 0x25, 0xce, 0x93, 0x7f, 0xbd, 0x22, 0x73, 0x7e, 0x14, 0x71, 0xe0, 0x60, 0x07,

0xd4, 0x39, 0x8b, 0x5e, 0xe9, 0xba, 0x25, 0xe8, 0x49, 0xe9, 0x34, 0xef, 0xfe, 0x04, 0x5c, 0xa5,

0x27, 0xcd, 0xa9, 0xda, 0x70, 0x05, 0x21, 0xab, 0x15, 0x82, 0x24, 0xc3, 0x94, 0xf5, 0xd7, 0xb7,

0xc4, 0x66, 0xcb, 0x32, 0x6e, 0x60, 0x2b, 0x55, 0x59, 0x28, 0x89, 0x8a, 0x72, 0xde, 0x88, 0x56,

0x27, 0x95, 0xd9, 0xac, 0x88, 0x4f, 0x65, 0x2b, 0x68, 0xfc, 0xe6, 0x41, 0xc1, 0x1b, 0xef, 0x4e,

0xd6, 0xc2, 0x0f, 0x64, 0x88, 0x95, 0x5e, 0xdd, 0x3a, 0x02, 0x07, 0x50, 0xa9, 0xda, 0xa4, 0x49,

0x74, 0x62, 0xfe, 0xd7,

};

_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *nsec = NULL, *rrsig = NULL, *dnskey = NULL;

_cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;

DnssecResult result;

nsec = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_NSEC, "nasa.gov");

assert_se(nsec);

nsec->nsec.next_domain_name = strdup("3D-Printing.nasa.gov");

assert_se(nsec->nsec.next_domain_name);

nsec->nsec.types = bitmap_new();

assert_se(nsec->nsec.types);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_A) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_NS) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_SOA) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_MX) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_TXT) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_RRSIG) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_NSEC) >= 0);

assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_DNSKEY) >= 0);

assert_se(bitmap_set(nsec->nsec.types, 65534) >= 0);

log_info("NSEC: %s", strna(dns_resource_record_to_string(nsec)));

rrsig = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_RRSIG, "NaSa.GOV.");

assert_se(rrsig);

rrsig->rrsig.type_covered = DNS_TYPE_NSEC;

rrsig->rrsig.algorithm = DNSSEC_ALGORITHM_RSASHA256;

rrsig->rrsig.labels = 2;

rrsig->rrsig.original_ttl = 300;

rrsig->rrsig.expiration = 0x5689002f;

rrsig->rrsig.inception = 0x56617230;

rrsig->rrsig.key_tag = 30390;

rrsig->rrsig.signer = strdup("Nasa.Gov.");

assert_se(rrsig->rrsig.signer);

rrsig->rrsig.signature_size = sizeof(signature_blob);

rrsig->rrsig.signature = memdup(signature_blob, rrsig->rrsig.signature_size);

assert_se(rrsig->rrsig.signature);

log_info("RRSIG: %s", strna(dns_resource_record_to_string(rrsig)));

dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "nASA.gOV");

assert_se(dnskey);

dnskey->dnskey.flags = 256;

dnskey->dnskey.protocol = 3;

dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_RSASHA256;

dnskey->dnskey.key_size = sizeof(dnskey_blob);

dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));

assert_se(dnskey->dnskey.key);

log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));

log_info("DNSKEY keytag: %u", dnssec_keytag(dnskey, false));

assert_se(dnssec_key_match_rrsig(nsec->key, rrsig) > 0);

assert_se(dnssec_rrsig_match_dnskey(rrsig, dnskey, false) > 0);

answer = dns_answer_new(1);

assert_se(answer);

assert_se(dns_answer_add(answer, nsec, 0, DNS_ANSWER_AUTHENTICATED) >= 0);

/* Validate the RR as it if was 2015-12-11 today */

assert_se(dnssec_verify_rrset(answer, nsec->key, rrsig, dnskey, 1449849318*USEC_PER_SEC, &result) >= 0);

assert_se(result == DNSSEC_VALIDATED);

}

static void test_dnssec_verify_rrset(void) {

static const uint8_t signature_blob[] = {

0x7f, 0x79, 0xdd, 0x5e, 0x89, 0x79, 0x18, 0xd0, 0x34, 0x86, 0x8c, 0x72, 0x77, 0x75, 0x48, 0x4d,

0xc3, 0x7d, 0x38, 0x04, 0xab, 0xcd, 0x9e, 0x4c, 0x82, 0xb0, 0x92, 0xca, 0xe9, 0x66, 0xe9, 0x6e,

0x47, 0xc7, 0x68, 0x8c, 0x94, 0xf6, 0x69, 0xcb, 0x75, 0x94, 0xe6, 0x30, 0xa6, 0xfb, 0x68, 0x64,

0x96, 0x1a, 0x84, 0xe1, 0xdc, 0x16, 0x4c, 0x83, 0x6c, 0x44, 0xf2, 0x74, 0x4d, 0x74, 0x79, 0x8f,

0xf3, 0xf4, 0x63, 0x0d, 0xef, 0x5a, 0xe7, 0xe2, 0xfd, 0xf2, 0x2b, 0x38, 0x7c, 0x28, 0x96, 0x9d,

0xb6, 0xcd, 0x5c, 0x3b, 0x57, 0xe2, 0x24, 0x78, 0x65, 0xd0, 0x9e, 0x77, 0x83, 0x09, 0x6c, 0xff,

0x3d, 0x52, 0x3f, 0x6e, 0xd1, 0xed, 0x2e, 0xf9, 0xee, 0x8e, 0xa6, 0xbe, 0x9a, 0xa8, 0x87, 0x76,

0xd8, 0x77, 0xcc, 0x96, 0xa0, 0x98, 0xa1, 0xd1, 0x68, 0x09, 0x43, 0xcf, 0x56, 0xd9, 0xd1, 0x66,

};

static const uint8_t dnskey_blob[] = {

0x03, 0x01, 0x00, 0x01, 0x9b, 0x49, 0x9b, 0xc1, 0xf9, 0x9a, 0xe0, 0x4e, 0xcf, 0xcb, 0x14, 0x45,

0x2e, 0xc9, 0xf9, 0x74, 0xa7, 0x18, 0xb5, 0xf3, 0xde, 0x39, 0x49, 0xdf, 0x63, 0x33, 0x97, 0x52,

0xe0, 0x8e, 0xac, 0x50, 0x30, 0x8e, 0x09, 0xd5, 0x24, 0x3d, 0x26, 0xa4, 0x49, 0x37, 0x2b, 0xb0,

0x6b, 0x1b, 0xdf, 0xde, 0x85, 0x83, 0xcb, 0x22, 0x4e, 0x60, 0x0a, 0x91, 0x1a, 0x1f, 0xc5, 0x40,

0xb1, 0xc3, 0x15, 0xc1, 0x54, 0x77, 0x86, 0x65, 0x53, 0xec, 0x10, 0x90, 0x0c, 0x91, 0x00, 0x5e,

0x15, 0xdc, 0x08, 0x02, 0x4c, 0x8c, 0x0d, 0xc0, 0xac, 0x6e, 0xc4, 0x3e, 0x1b, 0x80, 0x19, 0xe4,

0xf7, 0x5f, 0x77, 0x51, 0x06, 0x87, 0x61, 0xde, 0xa2, 0x18, 0x0f, 0x40, 0x8b, 0x79, 0x72, 0xfa,

0x8d, 0x1a, 0x44, 0x47, 0x0d, 0x8e, 0x3a, 0x2d, 0xc7, 0x39, 0xbf, 0x56, 0x28, 0x97, 0xd9, 0x20,

0x4f, 0x00, 0x51, 0x3b,

};

_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *a = NULL, *rrsig = NULL, *dnskey = NULL;

_cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;

DnssecResult result;

a = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, "nAsA.gov");

assert_se(a);

a->a.in_addr.s_addr = inet_addr("52.0.14.116");

log_info("A: %s", strna(dns_resource_record_to_string(a)));

rrsig = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_RRSIG, "NaSa.GOV.");

assert_se(rrsig);

rrsig->rrsig.type_covered = DNS_TYPE_A;

rrsig->rrsig.algorithm = DNSSEC_ALGORITHM_RSASHA256;

rrsig->rrsig.labels = 2;

rrsig->rrsig.original_ttl = 600;

rrsig->rrsig.expiration = 0x5683135c;

rrsig->rrsig.inception = 0x565b7da8;

rrsig->rrsig.key_tag = 63876;

rrsig->rrsig.signer = strdup("Nasa.Gov.");

assert_se(rrsig->rrsig.signer);

rrsig->rrsig.signature_size = sizeof(signature_blob);

rrsig->rrsig.signature = memdup(signature_blob, rrsig->rrsig.signature_size);

assert_se(rrsig->rrsig.signature);

log_info("RRSIG: %s", strna(dns_resource_record_to_string(rrsig)));

dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "nASA.gOV");

assert_se(dnskey);

dnskey->dnskey.flags = 256;

dnskey->dnskey.protocol = 3;

dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_RSASHA256;

dnskey->dnskey.key_size = sizeof(dnskey_blob);

dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));

assert_se(dnskey->dnskey.key);

log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));

log_info("DNSKEY keytag: %u", dnssec_keytag(dnskey, false));

assert_se(dnssec_key_match_rrsig(a->key, rrsig) > 0);

assert_se(dnssec_rrsig_match_dnskey(rrsig, dnskey, false) > 0);

answer = dns_answer_new(1);

assert_se(answer);

assert_se(dns_answer_add(answer, a, 0, DNS_ANSWER_AUTHENTICATED) >= 0);

/* Validate the RR as it if was 2015-12-2 today */

assert_se(dnssec_verify_rrset(answer, a->key, rrsig, dnskey, 1449092754*USEC_PER_SEC, &result) >= 0);

assert_se(result == DNSSEC_VALIDATED);

}

static void test_dnssec_verify_dns_key(void) {

static const uint8_t ds1_fprint[] = {

0x46, 0x8B, 0xC8, 0xDD, 0xC7, 0xE8, 0x27, 0x03, 0x40, 0xBB, 0x8A, 0x1F, 0x3B, 0x2E, 0x45, 0x9D,

0x80, 0x67, 0x14, 0x01,

};

static const uint8_t ds2_fprint[] = {

0x8A, 0xEE, 0x80, 0x47, 0x05, 0x5F, 0x83, 0xD1, 0x48, 0xBA, 0x8F, 0xF6, 0xDD, 0xA7, 0x60, 0xCE,

0x94, 0xF7, 0xC7, 0x5E, 0x52, 0x4C, 0xF2, 0xE9, 0x50, 0xB9, 0x2E, 0xCB, 0xEF, 0x96, 0xB9, 0x98,

};

static const uint8_t dnskey_blob[] = {

0x03, 0x01, 0x00, 0x01, 0xa8, 0x12, 0xda, 0x4f, 0xd2, 0x7d, 0x54, 0x14, 0x0e, 0xcc, 0x5b, 0x5e,

0x45, 0x9c, 0x96, 0x98, 0xc0, 0xc0, 0x85, 0x81, 0xb1, 0x47, 0x8c, 0x7d, 0xe8, 0x39, 0x50, 0xcc,

0xc5, 0xd0, 0xf2, 0x00, 0x81, 0x67, 0x79, 0xf6, 0xcc, 0x9d, 0xad, 0x6c, 0xbb, 0x7b, 0x6f, 0x48,

0x97, 0x15, 0x1c, 0xfd, 0x0b, 0xfe, 0xd3, 0xd7, 0x7d, 0x9f, 0x81, 0x26, 0xd3, 0xc5, 0x65, 0x49,

0xcf, 0x46, 0x62, 0xb0, 0x55, 0x6e, 0x47, 0xc7, 0x30, 0xef, 0x51, 0xfb, 0x3e, 0xc6, 0xef, 0xde,

0x27, 0x3f, 0xfa, 0x57, 0x2d, 0xa7, 0x1d, 0x80, 0x46, 0x9a, 0x5f, 0x14, 0xb3, 0xb0, 0x2c, 0xbe,

0x72, 0xca, 0xdf, 0xb2, 0xff, 0x36, 0x5b, 0x4f, 0xec, 0x58, 0x8e, 0x8d, 0x01, 0xe9, 0xa9, 0xdf,

0xb5, 0x60, 0xad, 0x52, 0x4d, 0xfc, 0xa9, 0x3e, 0x8d, 0x35, 0x95, 0xb3, 0x4e, 0x0f, 0xca, 0x45,

0x1b, 0xf7, 0xef, 0x3a, 0x88, 0x25, 0x08, 0xc7, 0x4e, 0x06, 0xc1, 0x62, 0x1a, 0xce, 0xd8, 0x77,

0xbd, 0x02, 0x65, 0xf8, 0x49, 0xfb, 0xce, 0xf6, 0xa8, 0x09, 0xfc, 0xde, 0xb2, 0x09, 0x9d, 0x39,

0xf8, 0x63, 0x9c, 0x32, 0x42, 0x7c, 0xa0, 0x30, 0x86, 0x72, 0x7a, 0x4a, 0xc6, 0xd4, 0xb3, 0x2d,

0x24, 0xef, 0x96, 0x3f, 0xc2, 0xda, 0xd3, 0xf2, 0x15, 0x6f, 0xda, 0x65, 0x4b, 0x81, 0x28, 0x68,

0xf4, 0xfe, 0x3e, 0x71, 0x4f, 0x50, 0x96, 0x72, 0x58, 0xa1, 0x89, 0xdd, 0x01, 0x61, 0x39, 0x39,

0xc6, 0x76, 0xa4, 0xda, 0x02, 0x70, 0x3d, 0xc0, 0xdc, 0x8d, 0x70, 0x72, 0x04, 0x90, 0x79, 0xd4,

0xec, 0x65, 0xcf, 0x49, 0x35, 0x25, 0x3a, 0x14, 0x1a, 0x45, 0x20, 0xeb, 0x31, 0xaf, 0x92, 0xba,

0x20, 0xd3, 0xcd, 0xa7, 0x13, 0x44, 0xdc, 0xcf, 0xf0, 0x27, 0x34, 0xb9, 0xe7, 0x24, 0x6f, 0x73,

0xe7, 0xea, 0x77, 0x03,

};

_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *dnskey = NULL, *ds1 = NULL, *ds2 = NULL;

/* The two DS RRs in effect for nasa.gov on 2015-12-01. */

ds1 = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DS, "nasa.gov");

assert_se(ds1);

ds1->ds.key_tag = 47857;

ds1->ds.algorithm = DNSSEC_ALGORITHM_RSASHA256;

ds1->ds.digest_type = DNSSEC_DIGEST_SHA1;

ds1->ds.digest_size = sizeof(ds1_fprint);

ds1->ds.digest = memdup(ds1_fprint, ds1->ds.digest_size);

assert_se(ds1->ds.digest);

log_info("DS1: %s", strna(dns_resource_record_to_string(ds1)));

ds2 = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DS, "NASA.GOV");

assert_se(ds2);

ds2->ds.key_tag = 47857;

ds2->ds.algorithm = DNSSEC_ALGORITHM_RSASHA256;

ds2->ds.digest_type = DNSSEC_DIGEST_SHA256;

ds2->ds.digest_size = sizeof(ds2_fprint);

ds2->ds.digest = memdup(ds2_fprint, ds2->ds.digest_size);

assert_se(ds2->ds.digest);

log_info("DS2: %s", strna(dns_resource_record_to_string(ds2)));

dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "nasa.GOV");

assert_se(dnskey);

dnskey->dnskey.flags = 257;

dnskey->dnskey.protocol = 3;

dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_RSASHA256;

dnskey->dnskey.key_size = sizeof(dnskey_blob);

dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));

assert_se(dnskey->dnskey.key);

log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));

log_info("DNSKEY keytag: %u", dnssec_keytag(dnskey, false));

assert_se(dnssec_verify_dnskey(dnskey, ds1, false) > 0);

assert_se(dnssec_verify_dnskey(dnskey, ds2, false) > 0);

}

static void test_dnssec_canonicalize_one(const char *original, const char *canonical, int r) {

char canonicalized[DNSSEC_CANONICAL_HOSTNAME_MAX];

assert_se(dnssec_canonicalize(original, canonicalized, sizeof(canonicalized)) == r);

if (r < 0)

return;

assert_se(streq(canonicalized, canonical));

}

static void test_dnssec_canonicalize(void) {

test_dnssec_canonicalize_one("", ".", 1);

test_dnssec_canonicalize_one(".", ".", 1);

test_dnssec_canonicalize_one("foo", "foo.", 4);

test_dnssec_canonicalize_one("foo.", "foo.", 4);

test_dnssec_canonicalize_one("FOO.", "foo.", 4);

test_dnssec_canonicalize_one("FOO.bar.", "foo.bar.", 8);

test_dnssec_canonicalize_one("FOO..bar.", NULL, -EINVAL);

}

static void test_dnssec_nsec3_hash(void) {

static const uint8_t salt[] = { 0xB0, 0x1D, 0xFA, 0xCE };

static const uint8_t next_hashed_name[] = { 0x84, 0x10, 0x26, 0x53, 0xc9, 0xfa, 0x4d, 0x85, 0x6c, 0x97, 0x82, 0xe2, 0x8f, 0xdf, 0x2d, 0x5e, 0x87, 0x69, 0xc4, 0x52 };

_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;

uint8_t h[DNSSEC_HASH_SIZE_MAX];

_cleanup_free_ char *b = NULL;

int k;

/* The NSEC3 RR for eurid.eu on 2015-12-14. */

rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_NSEC3, "PJ8S08RR45VIQDAQGE7EN3VHKNROTBMM.eurid.eu.");

assert_se(rr);

rr->nsec3.algorithm = DNSSEC_DIGEST_SHA1;

rr->nsec3.flags = 1;

rr->nsec3.iterations = 1;

rr->nsec3.salt = memdup(salt, sizeof(salt));

assert_se(rr->nsec3.salt);

rr->nsec3.salt_size = sizeof(salt);

rr->nsec3.next_hashed_name = memdup(next_hashed_name, sizeof(next_hashed_name));

assert_se(rr->nsec3.next_hashed_name);

rr->nsec3.next_hashed_name_size = sizeof(next_hashed_name);

log_info("NSEC3: %s", strna(dns_resource_record_to_string(rr)));

k = dnssec_nsec3_hash(rr, "eurid.eu", &h);

assert_se(k >= 0);

b = base32hexmem(h, k, false);

assert_se(b);

assert_se(strcasecmp(b, "PJ8S08RR45VIQDAQGE7EN3VHKNROTBMM") == 0);

}

int main(int argc, char*argv[]) {

test_dnssec_canonicalize();

test_dnssec_verify_dns_key();

test_dnssec_verify_rrset();

test_dnssec_verify_rrset2();

test_dnssec_nsec3_hash();

return 0;

}