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Diffstat (limited to '')
| -rw-r--r-- | tests/dns/dst_test.c | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/tests/dns/dst_test.c b/tests/dns/dst_test.c new file mode 100644 index 0000000..283a7ba --- /dev/null +++ b/tests/dns/dst_test.c @@ -0,0 +1,487 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +#include <inttypes.h> +#include <sched.h> /* IWYU pragma: keep */ +#include <setjmp.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdlib.h> +#include <unistd.h> + +/* + * As a workaround, include an OpenSSL header file before including cmocka.h, + * because OpenSSL 3.1.0 uses __attribute__(malloc), conflicting with a + * redefined malloc in cmocka.h. + */ +#include <openssl/err.h> + +#define UNIT_TESTING +#include <cmocka.h> + +#include <isc/file.h> +#include <isc/hex.h> +#include <isc/result.h> +#include <isc/stdio.h> +#include <isc/string.h> +#include <isc/util.h> + +#include <dst/dst.h> + +#include "dst_internal.h" + +#include <tests/dns.h> + +static int +setup_test(void **state) { + UNUSED(state); + + dst_lib_init(mctx, NULL); + + return (0); +} + +static int +teardown_test(void **state) { + UNUSED(state); + + dst_lib_destroy(); + + return (0); +} + +/* Read sig in file at path to buf. Check signature ineffability */ +static isc_result_t +sig_fromfile(const char *path, isc_buffer_t *buf) { + isc_result_t result; + size_t rval, len; + FILE *fp = NULL; + unsigned char val; + char *p, *data; + off_t size; + + result = isc_stdio_open(path, "rb", &fp); + assert_int_equal(result, ISC_R_SUCCESS); + + result = isc_file_getsizefd(fileno(fp), &size); + assert_int_equal(result, ISC_R_SUCCESS); + + data = isc_mem_get(mctx, (size + 1)); + assert_non_null(data); + + len = (size_t)size; + p = data; + while (len != 0U) { + result = isc_stdio_read(p, 1, len, fp, &rval); + assert_int_equal(result, ISC_R_SUCCESS); + len -= rval; + p += rval; + } + isc_stdio_close(fp); + + p = data; + len = size; + while (len > 0U) { + if ((*p == '\r') || (*p == '\n')) { + ++p; + --len; + continue; + } else if (len < 2U) { + goto err; + } + if (('0' <= *p) && (*p <= '9')) { + val = *p - '0'; + } else if (('A' <= *p) && (*p <= 'F')) { + val = *p - 'A' + 10; + } else { + result = ISC_R_BADHEX; + goto err; + } + ++p; + val <<= 4; + --len; + if (('0' <= *p) && (*p <= '9')) { + val |= (*p - '0'); + } else if (('A' <= *p) && (*p <= 'F')) { + val |= (*p - 'A' + 10); + } else { + result = ISC_R_BADHEX; + goto err; + } + ++p; + --len; + isc_buffer_putuint8(buf, val); + } + + result = ISC_R_SUCCESS; + +err: + isc_mem_put(mctx, data, size + 1); + return (result); +} + +static void +check_sig(const char *datapath, const char *sigpath, const char *keyname, + dns_keytag_t id, dns_secalg_t alg, int type, bool expect) { + isc_result_t result; + size_t rval, len; + FILE *fp; + dst_key_t *key = NULL; + unsigned char sig[512]; + unsigned char *p; + unsigned char *data; + off_t size; + isc_buffer_t b; + isc_buffer_t databuf, sigbuf; + isc_region_t datareg, sigreg; + dns_fixedname_t fname; + dns_name_t *name; + dst_context_t *ctx = NULL; + + /* + * Read data from file in a form usable by dst_verify. + */ + result = isc_stdio_open(datapath, "rb", &fp); + assert_int_equal(result, ISC_R_SUCCESS); + + result = isc_file_getsizefd(fileno(fp), &size); + assert_int_equal(result, ISC_R_SUCCESS); + + data = isc_mem_get(mctx, (size + 1)); + assert_non_null(data); + + p = data; + len = (size_t)size; + do { + result = isc_stdio_read(p, 1, len, fp, &rval); + assert_int_equal(result, ISC_R_SUCCESS); + len -= rval; + p += rval; + } while (len); + isc_stdio_close(fp); + + /* + * Read key from file in a form usable by dst_verify. + */ + name = dns_fixedname_initname(&fname); + isc_buffer_constinit(&b, keyname, strlen(keyname)); + isc_buffer_add(&b, strlen(keyname)); + result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL); + assert_int_equal(result, ISC_R_SUCCESS); + result = dst_key_fromfile(name, id, alg, type, + TESTS_DIR "/testdata/dst", mctx, &key); + assert_int_equal(result, ISC_R_SUCCESS); + + isc_buffer_init(&databuf, data, (unsigned int)size); + isc_buffer_add(&databuf, (unsigned int)size); + isc_buffer_usedregion(&databuf, &datareg); + + memset(sig, 0, sizeof(sig)); + isc_buffer_init(&sigbuf, sig, sizeof(sig)); + + /* + * Read precomputed signature from file in a form usable by dst_verify. + */ + result = sig_fromfile(sigpath, &sigbuf); + assert_int_equal(result, ISC_R_SUCCESS); + + /* + * Verify that the key signed the data. + */ + isc_buffer_remainingregion(&sigbuf, &sigreg); + + result = dst_context_create(key, mctx, DNS_LOGCATEGORY_GENERAL, false, + 0, &ctx); + assert_int_equal(result, ISC_R_SUCCESS); + + result = dst_context_adddata(ctx, &datareg); + assert_int_equal(result, ISC_R_SUCCESS); + result = dst_context_verify(ctx, &sigreg); + + /* + * Compute the expected signature and emit it + * so the precomputed signature can be updated. + * This should only be done if the covered data + * is updated. + */ + if (expect && result != ISC_R_SUCCESS) { + isc_result_t result2; + + dst_context_destroy(&ctx); + result2 = dst_context_create(key, mctx, DNS_LOGCATEGORY_GENERAL, + false, 0, &ctx); + assert_int_equal(result2, ISC_R_SUCCESS); + + result2 = dst_context_adddata(ctx, &datareg); + assert_int_equal(result2, ISC_R_SUCCESS); + + char sigbuf2[4096]; + isc_buffer_t sigb; + isc_buffer_init(&sigb, sigbuf2, sizeof(sigbuf2)); + + result2 = dst_context_sign(ctx, &sigb); + assert_int_equal(result2, ISC_R_SUCCESS); + + isc_region_t r; + isc_buffer_usedregion(&sigb, &r); + + char hexbuf[4096] = { 0 }; + isc_buffer_t hb; + isc_buffer_init(&hb, hexbuf, sizeof(hexbuf)); + + isc_hex_totext(&r, 0, "", &hb); + + fprintf(stderr, "# %s:\n# %s\n", sigpath, hexbuf); + } + + isc_mem_put(mctx, data, size + 1); + dst_context_destroy(&ctx); + dst_key_free(&key); + + assert_true((expect && (result == ISC_R_SUCCESS)) || + (!expect && (result != ISC_R_SUCCESS))); + + return; +} + +ISC_RUN_TEST_IMPL(sig_test) { + struct { + const char *datapath; + const char *sigpath; + const char *keyname; + dns_keytag_t keyid; + dns_secalg_t alg; + bool expect; + } testcases[] = { + { TESTS_DIR "/testdata/dst/test1.data", + TESTS_DIR "/testdata/dst/test1.ecdsa256sig", "test.", 49130, + DST_ALG_ECDSA256, true }, + { TESTS_DIR "/testdata/dst/test1.data", + TESTS_DIR "/testdata/dst/test1.rsasha256sig", "test.", 11349, + DST_ALG_RSASHA256, true }, + { /* wrong sig */ + TESTS_DIR "/testdata/dst/test1.data", + TESTS_DIR "/testdata/dst/test1.ecdsa256sig", "test.", 11349, + DST_ALG_RSASHA256, false }, + { /* wrong data */ + TESTS_DIR "/testdata/dst/test2.data", + TESTS_DIR "/testdata/dst/test1.ecdsa256sig", "test.", 49130, + DST_ALG_ECDSA256, false }, + }; + unsigned int i; + + for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) { + if (!dst_algorithm_supported(testcases[i].alg)) { + continue; + } + + check_sig(testcases[i].datapath, testcases[i].sigpath, + testcases[i].keyname, testcases[i].keyid, + testcases[i].alg, DST_TYPE_PRIVATE | DST_TYPE_PUBLIC, + testcases[i].expect); + } +} + +static void +check_cmp(const char *key1_name, dns_keytag_t key1_id, const char *key2_name, + dns_keytag_t key2_id, dns_secalg_t alg, int type, bool expect) { + isc_result_t result; + dst_key_t *key1 = NULL; + dst_key_t *key2 = NULL; + isc_buffer_t b1; + isc_buffer_t b2; + dns_fixedname_t fname1; + dns_fixedname_t fname2; + dns_name_t *name1; + dns_name_t *name2; + + /* + * Read key1 from the file. + */ + name1 = dns_fixedname_initname(&fname1); + isc_buffer_constinit(&b1, key1_name, strlen(key1_name)); + isc_buffer_add(&b1, strlen(key1_name)); + result = dns_name_fromtext(name1, &b1, dns_rootname, 0, NULL); + assert_int_equal(result, ISC_R_SUCCESS); + result = dst_key_fromfile(name1, key1_id, alg, type, + TESTS_DIR "/comparekeys", mctx, &key1); + assert_int_equal(result, ISC_R_SUCCESS); + + /* + * Read key2 from the file. + */ + name2 = dns_fixedname_initname(&fname2); + isc_buffer_constinit(&b2, key2_name, strlen(key2_name)); + isc_buffer_add(&b2, strlen(key2_name)); + result = dns_name_fromtext(name2, &b2, dns_rootname, 0, NULL); + assert_int_equal(result, ISC_R_SUCCESS); + result = dst_key_fromfile(name2, key2_id, alg, type, + TESTS_DIR "/comparekeys", mctx, &key2); + assert_int_equal(result, ISC_R_SUCCESS); + + /* + * Compare the keys (for public-only keys). + */ + if ((type & DST_TYPE_PRIVATE) == 0) { + assert_true(dst_key_pubcompare(key1, key2, false) == expect); + } + + /* + * Compare the keys (for both public-only keys and keypairs). + */ + assert_true(dst_key_compare(key1, key2) == expect); + + /* + * Free the keys + */ + dst_key_free(&key2); + dst_key_free(&key1); + + return; +} + +ISC_RUN_TEST_IMPL(cmp_test) { + struct { + const char *key1_name; + dns_keytag_t key1_id; + const char *key2_name; + dns_keytag_t key2_id; + dns_secalg_t alg; + int type; + bool expect; + } testcases[] = { + /* RSA Keypair: self */ + { "example.", 53461, "example.", 53461, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, true }, + + /* RSA Keypair: different key */ + { "example.", 53461, "example2.", 37993, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* RSA Keypair: different PublicExponent (e) */ + { "example.", 53461, "example-e.", 53973, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* RSA Keypair: different Modulus (n) */ + { "example.", 53461, "example-n.", 37464, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* RSA Keypair: different PrivateExponent (d) */ + { "example.", 53461, "example-d.", 53461, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* RSA Keypair: different Prime1 (p) */ + { "example.", 53461, "example-p.", 53461, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* RSA Keypair: different Prime2 (q) */ + { "example.", 53461, "example-q.", 53461, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* RSA Public Key: self */ + { "example.", 53461, "example.", 53461, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC, true }, + + /* RSA Public Key: different key */ + { "example.", 53461, "example2.", 37993, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC, false }, + + /* RSA Public Key: different PublicExponent (e) */ + { "example.", 53461, "example-e.", 53973, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC, false }, + + /* RSA Public Key: different Modulus (n) */ + { "example.", 53461, "example-n.", 37464, DST_ALG_RSASHA256, + DST_TYPE_PUBLIC, false }, + + /* ECDSA Keypair: self */ + { "example.", 19786, "example.", 19786, DST_ALG_ECDSA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, true }, + + /* ECDSA Keypair: different key */ + { "example.", 19786, "example2.", 16384, DST_ALG_ECDSA256, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* ECDSA Public Key: self */ + { "example.", 19786, "example.", 19786, DST_ALG_ECDSA256, + DST_TYPE_PUBLIC, true }, + + /* ECDSA Public Key: different key */ + { "example.", 19786, "example2.", 16384, DST_ALG_ECDSA256, + DST_TYPE_PUBLIC, false }, + + /* EdDSA Keypair: self */ + { "example.", 63663, "example.", 63663, DST_ALG_ED25519, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, true }, + + /* EdDSA Keypair: different key */ + { "example.", 63663, "example2.", 37529, DST_ALG_ED25519, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, false }, + + /* EdDSA Public Key: self */ + { "example.", 63663, "example.", 63663, DST_ALG_ED25519, + DST_TYPE_PUBLIC, true }, + + /* EdDSA Public Key: different key */ + { "example.", 63663, "example2.", 37529, DST_ALG_ED25519, + DST_TYPE_PUBLIC, false }, + + /* DH Keypair: self */ + { "example.", 65316, "example.", 65316, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE | DST_TYPE_KEY, true }, + + /* DH Keypair: different key */ + { "example.", 65316, "example2.", 19823, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE | DST_TYPE_KEY, false }, + + /* DH Keypair: different key (with generator=5) */ + { "example.", 65316, "example3.", 17187, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE | DST_TYPE_KEY, false }, + + /* DH Keypair: different private key */ + { "example.", 65316, "example-private.", 65316, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE | DST_TYPE_KEY, false }, + + /* DH Public Key: self */ + { "example.", 65316, "example.", 65316, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_KEY, true }, + + /* DH Public Key: different key */ + { "example.", 65316, "example2.", 19823, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_KEY, false }, + + /* DH Public Key: different key (with generator=5) */ + { "example.", 65316, "example3.", 17187, DST_ALG_DH, + DST_TYPE_PUBLIC | DST_TYPE_KEY, false }, + }; + unsigned int i; + + for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) { + if (!dst_algorithm_supported(testcases[i].alg)) { + continue; + } + + check_cmp(testcases[i].key1_name, testcases[i].key1_id, + testcases[i].key2_name, testcases[i].key2_id, + testcases[i].alg, testcases[i].type, + testcases[i].expect); + } +} + +ISC_TEST_LIST_START +ISC_TEST_ENTRY_CUSTOM(sig_test, setup_test, teardown_test) +ISC_TEST_ENTRY_CUSTOM(cmp_test, setup_test, teardown_test) +ISC_TEST_LIST_END + +ISC_TEST_MAIN |