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Diffstat (limited to 'testcode/unitzonemd.c')
| -rw-r--r-- | testcode/unitzonemd.c | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/testcode/unitzonemd.c b/testcode/unitzonemd.c new file mode 100644 index 000000000000..5caa68a102c3 --- /dev/null +++ b/testcode/unitzonemd.c @@ -0,0 +1,537 @@ +/* + * testcode/unitzonemd.c - unit test for zonemd. + * + * Copyright (c) 2020, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +/** + * \file + * Unit tests for ZONEMD functionality. + */ + +#include "config.h" +#include <ctype.h> +#include "util/log.h" +#include "testcode/unitmain.h" +#include "sldns/str2wire.h" +#include "services/authzone.h" +#include "util/data/dname.h" +#include "util/regional.h" +#include "validator/val_anchor.h" + +#define xstr(s) str(s) +#define str(s) #s +#define SRCDIRSTR xstr(SRCDIR) + +/** Add zone from file for testing */ +struct auth_zone* authtest_addzone(struct auth_zones* az, const char* name, + char* fname); + +/** zonemd unit test, generate a zonemd digest and check if correct */ +static void zonemd_generate_test(const char* zname, char* zfile, + int scheme, int hashalgo, const char* digest) +{ + uint8_t zonemd_hash[512]; + size_t hashlen = 0; + char output[1024+1]; + size_t i; + struct auth_zones* az; + struct auth_zone* z; + int result; + struct regional* region = NULL; + struct sldns_buffer* buf = NULL; + char* reason = NULL; + char* digestdup; + + if(!zonemd_hashalgo_supported(hashalgo)) + return; /* cannot test unsupported algo */ + + /* setup environment */ + az = auth_zones_create(); + unit_assert(az); + region = regional_create(); + unit_assert(region); + buf = sldns_buffer_new(65535); + unit_assert(buf); + + /* read file */ + z = authtest_addzone(az, zname, zfile); + unit_assert(z); + lock_rw_wrlock(&z->lock); + z->zonemd_check = 1; + lock_rw_unlock(&z->lock); + + /* create zonemd digest */ + result = auth_zone_generate_zonemd_hash(z, scheme, hashalgo, + zonemd_hash, sizeof(zonemd_hash), &hashlen, region, buf, + &reason); + if(reason) printf("zonemd failure reason: %s\n", reason); + unit_assert(result); + + /* check digest */ + unit_assert(hashlen*2+1 <= sizeof(output)); + for(i=0; i<hashlen; i++) { + const char* hexl = "0123456789ABCDEF"; + output[i*2] = hexl[(zonemd_hash[i]&0xf0)>>4]; + output[i*2+1] = hexl[zonemd_hash[i]&0xf]; + } + output[hashlen*2] = 0; + digestdup = strdup(digest); + unit_assert(digestdup); + for(i=0; i<strlen(digestdup); i++) { + digestdup[i] = toupper(digestdup[i]); + } + if(verbosity >= VERB_ALGO) { + char zname[255+1]; + dname_str(z->name, zname); + printf("zonemd generated for %s in %s with " + "scheme=%d hashalgo=%d\n", zname, z->zonefile, + scheme, hashalgo); + printf("digest %s\n", output); + printf("wanted %s\n", digestdup); + } + unit_assert(strcmp(output, digestdup) == 0); + + /* delete environment */ + free(digestdup); + auth_zones_delete(az); + regional_destroy(region); + sldns_buffer_free(buf); + + if(verbosity >= VERB_ALGO) { + printf("\n"); + } +} + +/** loop over files and test generated zonemd digest */ +static void zonemd_generate_tests(void) +{ + unit_show_func("services/authzone.c", "auth_zone_generate_zonemd_hash"); + zonemd_generate_test("example.org", SRCDIRSTR "/testdata/zonemd.example1.zone", + 1, 2, "20564D10F50A0CEBEC856C64032B7DFB53D3C449A421A5BC7A21F7627B4ACEA4DF29F2C6FE82ED9C23ADF6F4D420D5DD63EF6E6349D60FDAB910B65DF8D481B7"); + + /* https://tools.ietf.org/html/draft-ietf-dnsop-dns-zone-digest-12 + * from section A.1 */ + zonemd_generate_test("example", SRCDIRSTR "/testdata/zonemd.example_a1.zone", + 1, 1, "c68090d90a7aed716bc459f9340e3d7c1370d4d24b7e2fc3a1ddc0b9a87153b9a9713b3c9ae5cc27777f98b8e730044c"); + + /* https://tools.ietf.org/html/draft-ietf-dnsop-dns-zone-digest-12 + * from section A.2 */ + zonemd_generate_test("example", SRCDIRSTR "/testdata/zonemd.example_a2.zone", + 1, 1, "31cefb03814f5062ad12fa951ba0ef5f8da6ae354a415767246f7dc932ceb1e742a2108f529db6a33a11c01493de358d"); + + /* https://tools.ietf.org/html/draft-ietf-dnsop-dns-zone-digest-12 + * from section A.3 SHA384 digest */ + zonemd_generate_test("example", SRCDIRSTR "/testdata/zonemd.example_a3.zone", + 1, 1, "62e6cf51b02e54b9b5f967d547ce43136792901f9f88e637493daaf401c92c279dd10f0edb1c56f8080211f8480ee306"); + + /* https://tools.ietf.org/html/draft-ietf-dnsop-dns-zone-digest-12 + * from section A.3 SHA512 digest*/ + zonemd_generate_test("example", SRCDIRSTR "/testdata/zonemd.example_a3.zone", + 1, 2, "08cfa1115c7b948c4163a901270395ea226a930cd2cbcf2fa9a5e6eb85f37c8a4e114d884e66f176eab121cb02db7d652e0cc4827e7a3204f166b47e5613fd27"); + + /* https://tools.ietf.org/html/draft-ietf-dnsop-dns-zone-digest-12 + * from section A.4 */ + zonemd_generate_test("uri.arpa", SRCDIRSTR "/testdata/zonemd.example_a4.zone", + 1, 1, "1291b78ddf7669b1a39d014d87626b709b55774c5d7d58fadc556439889a10eaf6f11d615900a4f996bd46279514e473"); + + /* https://tools.ietf.org/html/draft-ietf-dnsop-dns-zone-digest-12 + * from section A.5 */ + zonemd_generate_test("root-servers.net", SRCDIRSTR "/testdata/zonemd.example_a5.zone", + 1, 1, "f1ca0ccd91bd5573d9f431c00ee0101b2545c97602be0a978a3b11dbfc1c776d5b3e86ae3d973d6b5349ba7f04340f79"); +} + +/** test the zonemd check routine */ +static void zonemd_check_test(void) +{ + const char* zname = "example.org"; + char* zfile = SRCDIRSTR "/testdata/zonemd.example1.zone"; + int scheme = 1; + int hashalgo = 2; + const char* digest = "20564D10F50A0CEBEC856C64032B7DFB53D3C449A421A5BC7A21F7627B4ACEA4DF29F2C6FE82ED9C23ADF6F4D420D5DD63EF6E6349D60FDAB910B65DF8D481B7"; + const char* digestwrong = "20564D10F50A0CEBEC856C64032B7DFB53D3C449A421A5BC7A21F7627B4ACEA4DF29F2C6FE82ED9C23ADF6F4D420D5DD63EF6E6349D60FDAB910B65DF8D48100"; + uint8_t hash[512], hashwrong[512]; + size_t hashlen = 0, hashwronglen = 0; + struct auth_zones* az; + struct auth_zone* z; + int result; + struct regional* region = NULL; + struct sldns_buffer* buf = NULL; + char* reason = NULL; + + if(!zonemd_hashalgo_supported(hashalgo)) + return; /* cannot test unsupported algo */ + unit_show_func("services/authzone.c", "auth_zone_generate_zonemd_check"); + + /* setup environment */ + az = auth_zones_create(); + unit_assert(az); + region = regional_create(); + unit_assert(region); + buf = sldns_buffer_new(65535); + unit_assert(buf); + + /* read file */ + z = authtest_addzone(az, zname, zfile); + unit_assert(z); + lock_rw_wrlock(&z->lock); + z->zonemd_check = 1; + lock_rw_unlock(&z->lock); + hashlen = sizeof(hash); + if(sldns_str2wire_hex_buf(digest, hash, &hashlen) != 0) { + unit_assert(0); /* parse failure */ + } + hashwronglen = sizeof(hashwrong); + if(sldns_str2wire_hex_buf(digestwrong, hashwrong, &hashwronglen) != 0) { + unit_assert(0); /* parse failure */ + } + + /* check return values of the check routine */ + result = auth_zone_generate_zonemd_check(z, scheme, hashalgo, + hash, hashlen, region, buf, &reason); + unit_assert(result && reason == NULL); + result = auth_zone_generate_zonemd_check(z, 241, hashalgo, + hash, hashlen, region, buf, &reason); + unit_assert(!result && strcmp(reason, "unsupported scheme")==0); + result = auth_zone_generate_zonemd_check(z, scheme, 242, + hash, hashlen, region, buf, &reason); + unit_assert(!result && strcmp(reason, "unsupported algorithm")==0); + result = auth_zone_generate_zonemd_check(z, scheme, hashalgo, + hash, 2, region, buf, &reason); + unit_assert(!result && strcmp(reason, "digest length too small, less than 12")==0); + result = auth_zone_generate_zonemd_check(z, scheme, hashalgo, + hashwrong, hashwronglen, region, buf, &reason); + unit_assert(!result && strcmp(reason, "incorrect digest")==0); + result = auth_zone_generate_zonemd_check(z, scheme, hashalgo, + hashwrong, hashwronglen-3, region, buf, &reason); + unit_assert(!result && strcmp(reason, "incorrect digest length")==0); + + /* delete environment */ + auth_zones_delete(az); + regional_destroy(region); + sldns_buffer_free(buf); + + if(verbosity >= VERB_ALGO) { + printf("\n"); + } +} + +/** zonemd test verify */ +static void zonemd_verify_test(char* zname, char* zfile, char* tastr, + char* date_override, char* result_wanted) +{ + time_t now = 0; + struct module_stack mods; + struct module_env env; + char* result = NULL; + struct auth_zone* z; + + /* setup test harness */ + memset(&mods, 0, sizeof(mods)); + memset(&env, 0, sizeof(env)); + env.scratch = regional_create(); + if(!env.scratch) + fatal_exit("out of memory"); + env.scratch_buffer = sldns_buffer_new(65553); + if(!env.scratch_buffer) + fatal_exit("out of memory"); + env.cfg = config_create(); + if(!env.cfg) + fatal_exit("out of memory"); + env.now = &now; + env.cfg->val_date_override = cfg_convert_timeval(date_override); + if(!env.cfg->val_date_override) + fatal_exit("could not parse datetime %s", date_override); + if(env.cfg->module_conf) + free(env.cfg->module_conf); + env.cfg->module_conf = strdup("validator iterator"); + if(!env.cfg->module_conf) + fatal_exit("out of memory"); + if(tastr) { + if(!cfg_strlist_insert(&env.cfg->trust_anchor_list, + strdup(tastr))) + fatal_exit("out of memory"); + } + env.anchors = anchors_create(); + if(!env.anchors) + fatal_exit("out of memory"); + env.auth_zones = auth_zones_create(); + if(!env.auth_zones) + fatal_exit("out of memory"); + modstack_init(&mods); + if(!modstack_setup(&mods, env.cfg->module_conf, &env)) + fatal_exit("could not modstack_setup"); + env.mesh = mesh_create(&mods, &env); + if(!env.mesh) + fatal_exit("out of memory"); + + /* load data */ + z = authtest_addzone(env.auth_zones, zname, zfile); + if(!z) + fatal_exit("could not addzone %s %s", zname, zfile); + + /* test */ + lock_rw_wrlock(&z->lock); + z->zonemd_check = 1; + auth_zone_verify_zonemd(z, &env, &mods, &result, 1, 0); + lock_rw_unlock(&z->lock); + if(verbosity >= VERB_ALGO) { + printf("auth zone %s: ZONEMD verification %s: %s\n", zname, + (strcmp(result, "ZONEMD verification successful")==0?"successful":"failed"), + result); + } + if(!result) + fatal_exit("out of memory"); + unit_assert(strcmp(result, result_wanted) == 0); + if(strcmp(result, "ZONEMD verification successful") == 0 || + strcmp(result, "DNSSEC verified nonexistence of ZONEMD") == 0 || + strcmp(result, "no ZONEMD present") == 0) { + lock_rw_rdlock(&z->lock); + unit_assert(!z->zone_expired); + lock_rw_unlock(&z->lock); + } else { + lock_rw_rdlock(&z->lock); + unit_assert(z->zone_expired); + lock_rw_unlock(&z->lock); + } + free(result); + + /* desetup test harness */ + mesh_delete(env.mesh); + modstack_desetup(&mods, &env); + auth_zones_delete(env.auth_zones); + anchors_delete(env.anchors); + config_delete(env.cfg); + regional_destroy(env.scratch); + sldns_buffer_free(env.scratch_buffer); + + if(verbosity >= VERB_ALGO) { + printf("\n"); + } +} + +/** zonemd test verify suite */ +static void zonemd_verify_tests(void) +{ + unit_show_func("services/authzone.c", "auth_zone_verify_zonemd"); + /* give trustanchor for unsigned zone, should fail */ + zonemd_verify_test("example.org", + SRCDIRSTR "/testdata/zonemd.example1.zone", + "example.org. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20180302005009", + "verify DNSKEY RRset with trust anchor failed: have trust anchor, but zone has no DNSKEY"); + /* unsigned zone without ZONEMD in it */ + zonemd_verify_test("example.org", + SRCDIRSTR "/testdata/zonemd.example1.zone", + NULL, + "20180302005009", + "no ZONEMD present"); + /* no trust anchor, so it succeeds for zone with a correct ZONEMD */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example2.zone", + NULL, + "20180302005009", + "ZONEMD verification successful"); + /* trust anchor for another zone, so it is indeterminate */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example2.zone", + "example.org. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20180302005009", + "ZONEMD verification successful"); + + /* load a DNSSEC signed zone, but no trust anchor */ + /* this zonefile has an incorrect ZONEMD digest, with correct + * DNSSEC signature. */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example3.zone", + NULL, + "20180302005009", + "incorrect digest"); + /* load a DNSSEC zone with NSEC3, but no trust anchor */ + /* this zonefile has an incorrect ZONEMD digest, with correct + * DNSSEC signature. */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example4.zone", + NULL, + "20180302005009", + "incorrect digest"); + /* valid zonemd, in dnssec signed zone, no trust anchor*/ + /* this zonefile has a correct ZONEMD digest and + * correct DNSSEC signature */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example5.zone", + NULL, + "20180302005009", + "ZONEMD verification successful"); + /* valid zonemd, in dnssec NSEC3 zone, no trust anchor*/ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example6.zone", + NULL, + "20180302005009", + "ZONEMD verification successful"); + + /* load a DNSSEC signed zone with a trust anchor, valid ZONEMD */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example5.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "ZONEMD verification successful"); + /* load a DNSSEC NSEC3 signed zone with a trust anchor, valid ZONEMD */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example6.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "ZONEMD verification successful"); + + /* load a DNSSEC NSEC zone without ZONEMD */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example7.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "DNSSEC verified nonexistence of ZONEMD"); + /* load a DNSSEC NSEC3 zone without ZONEMD */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example8.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "DNSSEC verified nonexistence of ZONEMD"); + + /* load DNSSEC zone but RRSIG on ZONEMD is wrong */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example9.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", +#ifdef HAVE_SSL + "DNSSEC verify failed for ZONEMD RRset: signature crypto failed" +#else /* HAVE_NETTLE */ + "DNSSEC verify failed for ZONEMD RRset: RSA signature verification failed" +#endif + ); + /* load DNSSEC zone but RRSIG on SOA is wrong */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example10.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", +#ifdef HAVE_SSL + "DNSSEC verify failed for SOA RRset: signature crypto failed" +#else /* HAVE_NETTLE */ + "DNSSEC verify failed for SOA RRset: RSA signature verification failed" +#endif + ); + + /* load DNSSEC zone without ZONEMD, but NSEC bitmap says it exists */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example11.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "DNSSEC NSEC bitmap says type ZONEMD exists"); + /* load DNSSEC zone without ZONEMD, but NSEC3 bitmap says it exists */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example12.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "DNSSEC NSEC3 bitmap says type ZONEMD exists"); + + /* load DNSSEC zone without ZONEMD, but RRSIG on NSEC not okay */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example13.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", +#ifdef HAVE_SSL + "DNSSEC verify failed for NSEC RRset: signature crypto failed" +#else /* HAVE_NETTLE */ + "DNSSEC verify failed for NSEC RRset: RSA signature verification failed" +#endif + ); + /* load DNSSEC zone without ZONEMD, but RRSIG on NSEC3 not okay */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example14.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", +#ifdef HAVE_SSL + "DNSSEC verify failed for NSEC3 RRset: signature crypto failed" +#else /* HAVE_NETTLE */ + "DNSSEC verify failed for NSEC3 RRset: RSA signature verification failed" +#endif + ); + + /* load DNSSEC zone, with ZONEMD, but DNSKEY RRSIG is not okay. */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example15.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", +#ifdef HAVE_SSL + "verify DNSKEY RRset with trust anchor failed: signature crypto failed" +#else /* HAVE_NETTLE */ + "verify DNSKEY RRset with trust anchor failed: RSA signature verification failed" +#endif + ); + /* load DNSSEC zone, but trust anchor mismatches DNSKEY */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example5.zone", + /* okay anchor is + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", */ + "example.com. IN DS 55566 8 2 0000000000111111222223333444444dfcf92595148022f2c2fd98e5deee90af", + "20201020135527", + "verify DNSKEY RRset with trust anchor failed: DS hash mismatches key"); + /* load DNSSEC zone, but trust anchor fails because the zone + * has expired signatures. We set the date for it */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example5.zone", + "example.com. IN DS 55566 8 2 9c148338951ce1c3b5cd3da532f3d90dfcf92595148022f2c2fd98e5deee90af", + /* okay date: "20201020135527", */ + "20221020135527", + "verify DNSKEY RRset with trust anchor failed: signature expired"); + + /* duplicate zonemd with same scheme and algorithm */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example16.zone", + NULL, + "20180302005009", + "ZONEMD RRSet contains more than one RR with the same scheme and hash algorithm"); + /* different capitalisation of ns name and owner names, should + * be canonicalized. */ + zonemd_verify_test("example.com", + SRCDIRSTR "/testdata/zonemd.example17.zone", + NULL, + "20180302005009", + "ZONEMD verification successful"); +} + +/** zonemd unit tests */ +void zonemd_test(void) +{ + unit_show_feature("zonemd"); + zonemd_generate_tests(); + zonemd_check_test(); + zonemd_verify_tests(); +} |