1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340
|
/*
PowerDNS Versatile Database Driven Nameserver
Copyright (C) 2013 - 2015 PowerDNS.COM BV
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation
Additionally, the license of this program contains a special
exception which allows to distribute the program in binary form when
it is linked against OpenSSL.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_NO_MAIN
#include <boost/test/unit_test.hpp>
#include "dnscrypt.hh"
#include "dnsname.hh"
#include "dnsparser.hh"
#include "dnswriter.hh"
#include <unistd.h>
bool g_verbose{true};
bool g_console{true};
bool g_syslog{true};
BOOST_AUTO_TEST_SUITE(dnscrypt_cc)
#ifdef HAVE_DNSCRYPT
// plaintext query for cert
BOOST_AUTO_TEST_CASE(DNSCryptPlaintextQuery) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DNSName name("2.name.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::TXT, QClass::IN, 0);
pw.getHeader()->rd = 0;
uint16_t len = plainQuery.size();
std::shared_ptr<DnsCryptQuery> query = std::make_shared<DnsCryptQuery>();
uint16_t decryptedLen = 0;
ctx.parsePacket((char*) plainQuery.data(), len, query, false, &decryptedLen);
BOOST_CHECK_EQUAL(query->valid, true);
BOOST_CHECK_EQUAL(query->encrypted, false);
std::vector<uint8_t> response;
ctx.getCertificateResponse(query, response);
MOADNSParser mdp((char*) response.data(), response.size());
BOOST_CHECK_EQUAL(mdp.d_header.qdcount, 1);
BOOST_CHECK_EQUAL(mdp.d_header.ancount, 1);
BOOST_CHECK_EQUAL(mdp.d_header.nscount, 0);
BOOST_CHECK_EQUAL(mdp.d_header.arcount, 0);
BOOST_CHECK_EQUAL(mdp.d_qname.toString(), "2.name.");
BOOST_CHECK(mdp.d_qclass == QClass::IN);
BOOST_CHECK(mdp.d_qtype == QType::TXT);
}
// invalid plaintext query (A)
BOOST_AUTO_TEST_CASE(DNSCryptPlaintextQueryInvalidA) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DNSName name("2.name.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::A, QClass::IN, 0);
pw.getHeader()->rd = 0;
uint16_t len = plainQuery.size();
std::shared_ptr<DnsCryptQuery> query = std::make_shared<DnsCryptQuery>();
uint16_t decryptedLen = 0;
ctx.parsePacket((char*) plainQuery.data(), len, query, false, &decryptedLen);
BOOST_CHECK_EQUAL(query->valid, false);
}
// invalid plaintext query (wrong provider name)
BOOST_AUTO_TEST_CASE(DNSCryptPlaintextQueryInvalidProviderName) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DNSName name("2.WRONG.name.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::TXT, QClass::IN, 0);
pw.getHeader()->rd = 0;
uint16_t len = plainQuery.size();
std::shared_ptr<DnsCryptQuery> query = std::make_shared<DnsCryptQuery>();
uint16_t decryptedLen = 0;
ctx.parsePacket((char*) plainQuery.data(), len, query, false, &decryptedLen);
BOOST_CHECK_EQUAL(query->valid, false);
}
// valid encrypted query
BOOST_AUTO_TEST_CASE(DNSCryptEncryptedQueryValid) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DnsCryptPrivateKey clientPrivateKey;
unsigned char clientPublicKey[DNSCRYPT_PUBLIC_KEY_SIZE];
DnsCryptContext::generateResolverKeyPair(clientPrivateKey, clientPublicKey);
unsigned char clientNonce[DNSCRYPT_NONCE_SIZE / 2] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0A, 0x0B };
DNSName name("www.powerdns.com.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::AAAA, QClass::IN, 0);
pw.getHeader()->rd = 1;
size_t requiredSize = plainQuery.size() + sizeof(DnsCryptQueryHeader) + DNSCRYPT_MAC_SIZE;
if (requiredSize < DnsCryptQuery::minUDPLength) {
requiredSize = DnsCryptQuery::minUDPLength;
}
plainQuery.reserve(requiredSize);
uint16_t len = plainQuery.size();
uint16_t encryptedResponseLen = 0;
int res = ctx.encryptQuery((char*) plainQuery.data(), len, plainQuery.capacity(), clientPublicKey, clientPrivateKey, clientNonce, false, &encryptedResponseLen);
BOOST_CHECK_EQUAL(res, 0);
BOOST_CHECK(encryptedResponseLen > len);
std::shared_ptr<DnsCryptQuery> query = std::make_shared<DnsCryptQuery>();
uint16_t decryptedLen = 0;
ctx.parsePacket((char*) plainQuery.data(), encryptedResponseLen, query, false, &decryptedLen);
BOOST_CHECK_EQUAL(query->valid, true);
BOOST_CHECK_EQUAL(query->encrypted, true);
MOADNSParser mdp((char*) plainQuery.data(), decryptedLen);
BOOST_CHECK_EQUAL(mdp.d_header.qdcount, 1);
BOOST_CHECK_EQUAL(mdp.d_header.ancount, 0);
BOOST_CHECK_EQUAL(mdp.d_header.nscount, 0);
BOOST_CHECK_EQUAL(mdp.d_header.arcount, 0);
BOOST_CHECK_EQUAL(mdp.d_qname, name);
BOOST_CHECK(mdp.d_qclass == QClass::IN);
BOOST_CHECK(mdp.d_qtype == QType::AAAA);
}
// valid encrypted query with not enough room
BOOST_AUTO_TEST_CASE(DNSCryptEncryptedQueryValidButShort) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DnsCryptPrivateKey clientPrivateKey;
unsigned char clientPublicKey[DNSCRYPT_PUBLIC_KEY_SIZE];
DnsCryptContext::generateResolverKeyPair(clientPrivateKey, clientPublicKey);
unsigned char clientNonce[DNSCRYPT_NONCE_SIZE / 2] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0A, 0x0B };
DNSName name("www.powerdns.com.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::AAAA, QClass::IN, 0);
pw.getHeader()->rd = 1;
uint16_t len = plainQuery.size();
uint16_t encryptedResponseLen = 0;
int res = ctx.encryptQuery((char*) plainQuery.data(), len, plainQuery.capacity(), clientPublicKey, clientPrivateKey, clientNonce, false, &encryptedResponseLen);
BOOST_CHECK_EQUAL(res, ENOBUFS);
}
// valid encrypted query with old key
BOOST_AUTO_TEST_CASE(DNSCryptEncryptedQueryValidWithOldKey) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DnsCryptPrivateKey clientPrivateKey;
unsigned char clientPublicKey[DNSCRYPT_PUBLIC_KEY_SIZE];
DnsCryptContext::generateResolverKeyPair(clientPrivateKey, clientPublicKey);
unsigned char clientNonce[DNSCRYPT_NONCE_SIZE / 2] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0A, 0x0B };
DNSName name("www.powerdns.com.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::AAAA, QClass::IN, 0);
pw.getHeader()->rd = 1;
size_t requiredSize = plainQuery.size() + sizeof(DnsCryptQueryHeader) + DNSCRYPT_MAC_SIZE;
if (requiredSize < DnsCryptQuery::minUDPLength) {
requiredSize = DnsCryptQuery::minUDPLength;
}
plainQuery.reserve(requiredSize);
uint16_t len = plainQuery.size();
uint16_t encryptedResponseLen = 0;
int res = ctx.encryptQuery((char*) plainQuery.data(), len, plainQuery.capacity(), clientPublicKey, clientPrivateKey, clientNonce, false, &encryptedResponseLen);
BOOST_CHECK_EQUAL(res, 0);
BOOST_CHECK(encryptedResponseLen > len);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
ctx.setNewCertificate(resolverCert, resolverPrivateKey);
std::shared_ptr<DnsCryptQuery> query = std::make_shared<DnsCryptQuery>();
uint16_t decryptedLen = 0;
ctx.parsePacket((char*) plainQuery.data(), encryptedResponseLen, query, false, &decryptedLen);
BOOST_CHECK_EQUAL(query->valid, true);
BOOST_CHECK_EQUAL(query->encrypted, true);
MOADNSParser mdp((char*) plainQuery.data(), decryptedLen);
BOOST_CHECK_EQUAL(mdp.d_header.qdcount, 1);
BOOST_CHECK_EQUAL(mdp.d_header.ancount, 0);
BOOST_CHECK_EQUAL(mdp.d_header.nscount, 0);
BOOST_CHECK_EQUAL(mdp.d_header.arcount, 0);
BOOST_CHECK_EQUAL(mdp.d_qname, name);
BOOST_CHECK(mdp.d_qclass == QClass::IN);
BOOST_CHECK(mdp.d_qtype == QType::AAAA);
}
// valid encrypted query with wrong key
BOOST_AUTO_TEST_CASE(DNSCryptEncryptedQueryInvalidWithWrongKey) {
DnsCryptPrivateKey resolverPrivateKey;
DnsCryptCert resolverCert;
unsigned char providerPublicKey[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE];
unsigned char providerPrivateKey[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE];
time_t now = time(NULL);
DnsCryptContext::generateProviderKeys(providerPublicKey, providerPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
DnsCryptContext ctx("2.name", resolverCert, resolverPrivateKey);
DnsCryptPrivateKey clientPrivateKey;
unsigned char clientPublicKey[DNSCRYPT_PUBLIC_KEY_SIZE];
DnsCryptContext::generateResolverKeyPair(clientPrivateKey, clientPublicKey);
unsigned char clientNonce[DNSCRYPT_NONCE_SIZE / 2] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0A, 0x0B };
DNSName name("www.powerdns.com.");
vector<uint8_t> plainQuery;
DNSPacketWriter pw(plainQuery, name, QType::AAAA, QClass::IN, 0);
pw.getHeader()->rd = 1;
size_t requiredSize = plainQuery.size() + sizeof(DnsCryptQueryHeader) + DNSCRYPT_MAC_SIZE;
if (requiredSize < DnsCryptQuery::minUDPLength) {
requiredSize = DnsCryptQuery::minUDPLength;
}
plainQuery.reserve(requiredSize);
uint16_t len = plainQuery.size();
uint16_t encryptedResponseLen = 0;
int res = ctx.encryptQuery((char*) plainQuery.data(), len, plainQuery.capacity(), clientPublicKey, clientPrivateKey, clientNonce, false, &encryptedResponseLen);
BOOST_CHECK_EQUAL(res, 0);
BOOST_CHECK(encryptedResponseLen > len);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
ctx.setNewCertificate(resolverCert, resolverPrivateKey);
DnsCryptContext::generateCertificate(1, now, now + (24 * 60 * 3600), providerPrivateKey, resolverPrivateKey, resolverCert);
ctx.setNewCertificate(resolverCert, resolverPrivateKey);
/* we have changed the key two times, we don't have the one used to encrypt this query */
std::shared_ptr<DnsCryptQuery> query = std::make_shared<DnsCryptQuery>();
uint16_t decryptedLen = 0;
ctx.parsePacket((char*) plainQuery.data(), encryptedResponseLen, query, false, &decryptedLen);
BOOST_CHECK_EQUAL(query->valid, false);
}
#endif
BOOST_AUTO_TEST_SUITE_END();
|