280 lines
5.7 KiB
C
280 lines
5.7 KiB
C
/* $OpenBSD: asn1oct.c,v 1.4 2023/05/13 07:17:32 tb Exp $ */
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/*
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* Copyright (c) 2023 Theo Buehler <tb@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <assert.h>
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#include <err.h>
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#include <string.h>
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#include <openssl/asn1.h>
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#include <openssl/x509v3.h>
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#define TESTBUFFER_SIZE 20
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static const struct i2s_asn1_octet_string_test {
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const char *desc;
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const uint8_t buf[TESTBUFFER_SIZE];
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long len;
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const char *want;
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} i2s_test[] = {
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{
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.desc = "Empty buffer gives empty string",
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.buf = { 0x00, },
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.len = 0,
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.want = "",
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},
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{
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.desc = "all hex digits",
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.buf = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, },
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.len = 8,
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.want = "01:23:45:67:89:AB:CD:EF",
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},
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{
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.desc = "all hex digits, scrambled",
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.buf = { 0x98, 0x24, 0xbf, 0x3a, 0xc7, 0xd6, 0x01, 0x5e, },
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.len = 8,
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.want = "98:24:BF:3A:C7:D6:01:5E",
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},
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{
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.desc = "Embedded 0 byte",
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.buf = { 0x7a, 0x00, 0xbb, },
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.len = 3,
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.want = "7A:00:BB",
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},
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{
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.desc = "All zeroes",
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.buf = { 0x00, 0x00, 0x00, 0x00, 0x00, },
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.len = 4,
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.want = "00:00:00:00",
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},
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{
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.desc = "All bits set",
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.buf = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, },
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.len = 8,
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.want = "FF:FF:FF:FF:FF:FF:FF:FF",
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},
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{
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.desc = "negative length",
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.buf = { 0x00, },
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.len = -1,
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},
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};
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#define N_I2S_TESTS (sizeof(i2s_test) / sizeof(i2s_test[0]))
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static int
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test_i2s_ASN1_OCTET_STRING(const struct i2s_asn1_octet_string_test *test)
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{
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ASN1_OCTET_STRING *aos = NULL;
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int should_fail = test->want == NULL;
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char *got = NULL;
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int failed = 0;
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if ((aos = ASN1_OCTET_STRING_new()) == NULL)
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errx(1, "ASN1_OCTET_STRING_new");
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if (!ASN1_STRING_set(aos, (void *)test->buf, test->len))
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errx(1, "ASN1_STRING_set");
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if ((got = i2s_ASN1_OCTET_STRING(NULL, aos)) == NULL) {
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if (!should_fail)
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errx(1, "i2s_ASN1_OCTET_STRING");
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}
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if (!should_fail && strcmp(test->want, got) != 0) {
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fprintf(stderr, "%s: \"%s\" failed: want \"%s\", got \"%s\"\n",
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__func__, test->desc, test->want, got);
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failed |= 1;
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}
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ASN1_OCTET_STRING_free(aos);
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free(got);
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return failed;
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}
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static int
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test_new_ASN1_OCTET_STRING(void)
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{
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ASN1_OCTET_STRING *aos = NULL;
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char *got;
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int failed = 0;
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if ((aos = ASN1_OCTET_STRING_new()) == NULL)
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errx(1, "%s: ASN1_OCTET_STRING_new", __func__);
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if ((got = i2s_ASN1_OCTET_STRING(NULL, aos)) == NULL)
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errx(1, "%s: i2s_ASN1_OCTET_STRING", __func__);
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if (strcmp("", got) != 0) {
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fprintf(stderr, "%s failed: want \"\", got \"%s\"\n",
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__func__, got);
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failed |= 1;
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}
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ASN1_OCTET_STRING_free(aos);
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free(got);
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return failed;
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}
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static int
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run_i2s_ASN1_OCTET_STRING_tests(void)
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{
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size_t i;
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int failed = 0;
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failed |= test_new_ASN1_OCTET_STRING();
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for (i = 0; i < N_I2S_TESTS; i++)
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failed |= test_i2s_ASN1_OCTET_STRING(&i2s_test[i]);
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return failed;
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}
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static const struct s2i_asn1_octet_string_test {
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const char *desc;
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const char *in;
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const char *want;
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} s2i_test[] = {
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/* Tests that should succeed. */
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{
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.desc = "empty string",
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.in = "",
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.want = "",
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},
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{
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.desc = "only colons",
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.in = ":::::::",
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.want = "",
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},
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{
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.desc = "a 0 octet",
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.in = "00",
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.want = "00",
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},
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{
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.desc = "a 0 octet with stupid colons",
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.in = ":::00:::::",
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.want = "00",
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},
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{
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.desc = "more stupid colons",
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.in = ":::C0fF::Ee:::::",
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.want = "C0:FF:EE",
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},
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{
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.desc = "all hex digits",
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.in = "0123456789abcdef",
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.want = "01:23:45:67:89:AB:CD:EF",
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},
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/* Tests that should fail. */
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{
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.desc = "colons between hex digits",
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.in = "A:F",
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},
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{
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.desc = "more colons between hex digits",
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.in = "5:7",
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},
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{
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.desc = "one hex digit",
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.in = "1",
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},
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{
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.desc = "three hex digits",
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.in = "bad",
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},
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{
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.desc = "three hex digits, colon after first digit",
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.in = "b:ad",
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},
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{
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.desc = "three hex digits, colon after second digit",
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.in = "ba:d",
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},
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{
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.desc = "non-hex digit",
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.in = "g00d",
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},
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{
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.desc = "non-hex digits",
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.in = "d0gged",
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},
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{
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.desc = "trailing non-hex digit",
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.in = "d00der",
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},
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};
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#define N_S2I_TESTS (sizeof(s2i_test) / sizeof(s2i_test[0]))
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static int
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test_s2i_ASN1_OCTET_STRING(const struct s2i_asn1_octet_string_test *test)
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{
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ASN1_OCTET_STRING *aos = NULL;
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char *got = NULL;
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int should_fail = test->want == NULL;
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int failed = 0;
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if ((aos = s2i_ASN1_OCTET_STRING(NULL, NULL, test->in)) == NULL) {
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if (!should_fail)
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errx(1, "%s: s2i_ASN1_OCTET_STRING", test->desc);
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goto done;
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}
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if ((got = i2s_ASN1_OCTET_STRING(NULL, aos)) == NULL)
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errx(1, "%s: i2s_ASN1_OCTET_STRING", test->desc);
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assert(test->want != NULL);
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if (strcmp(test->want, got) != 0) {
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fprintf(stderr, "%s: \"%s\" failed: want \"%s\", got \"%s\"\n",
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__func__, test->desc, test->want, got);
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failed |= 1;
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}
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done:
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ASN1_OCTET_STRING_free(aos);
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free(got);
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return failed;
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}
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static int
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run_s2i_ASN1_OCTET_STRING_tests(void)
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{
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size_t i;
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int failed = 0;
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failed |= test_new_ASN1_OCTET_STRING();
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for (i = 0; i < N_S2I_TESTS; i++)
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failed |= test_s2i_ASN1_OCTET_STRING(&s2i_test[i]);
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return failed;
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}
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int
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main(void)
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{
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int failed = 0;
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failed |= run_i2s_ASN1_OCTET_STRING_tests();
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failed |= run_s2i_ASN1_OCTET_STRING_tests();
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return failed;
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}
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