151 lines
4.0 KiB
C
151 lines
4.0 KiB
C
/* $OpenBSD: asn1evp.c,v 1.5 2022/09/05 21:06:31 tb Exp $ */
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/*
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* Copyright (c) 2017 Joel Sing <jsing@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 <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <openssl/asn1.h>
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#define TEST_NUM 0x7fffffffL
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unsigned char asn1_atios[] = {
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0x30, 0x10, 0x02, 0x04, 0x7f, 0xff, 0xff, 0xff,
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0x04, 0x08, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
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0x06, 0x07,
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};
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unsigned char test_octetstring[] = {
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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};
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static void
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hexdump(const unsigned char *buf, size_t len)
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{
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size_t i;
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for (i = 1; i <= len; i++)
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fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n");
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fprintf(stderr, "\n");
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}
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static int
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compare_data(const char *label, const unsigned char *d1, size_t d1_len,
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const unsigned char *d2, size_t d2_len)
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{
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if (d1_len != d2_len) {
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fprintf(stderr, "FAIL: got %s with length %zu, want %zu\n",
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label, d1_len, d2_len);
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return -1;
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}
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if (memcmp(d1, d2, d1_len) != 0) {
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fprintf(stderr, "FAIL: %s differs\n", label);
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fprintf(stderr, "got:\n");
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hexdump(d1, d1_len);
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fprintf(stderr, "want:\n");
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hexdump(d2, d2_len);
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return -1;
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}
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return 0;
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}
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int
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main(int argc, char **argv)
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{
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unsigned char data[16];
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long num = TEST_NUM;
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ASN1_TYPE *at = NULL;
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int failed = 1;
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int len;
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if ((at = ASN1_TYPE_new()) == NULL) {
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fprintf(stderr, "FAIL: ASN1_TYPE_new returned NULL\n");
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goto done;
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}
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if (!ASN1_TYPE_set_int_octetstring(at, num, test_octetstring,
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sizeof(test_octetstring))) {
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fprintf(stderr, "FAIL: ASN1_TYPE_set_int_octetstring failed\n");
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goto done;
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}
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if (at->type != V_ASN1_SEQUENCE) {
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fprintf(stderr, "FAIL: not a V_ASN1_SEQUENCE (%d != %d)\n",
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at->type, V_ASN1_SEQUENCE);
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goto done;
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}
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if (at->value.sequence->type != V_ASN1_OCTET_STRING) {
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fprintf(stderr, "FAIL: not a V_ASN1_OCTET_STRING (%d != %d)\n",
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at->type, V_ASN1_OCTET_STRING);
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goto done;
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}
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if (compare_data("sequence", at->value.sequence->data,
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at->value.sequence->length, asn1_atios, sizeof(asn1_atios)) == -1)
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goto done;
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memset(&data, 0, sizeof(data));
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num = 0;
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if ((len = ASN1_TYPE_get_int_octetstring(at, &num, data,
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sizeof(data))) < 0) {
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fprintf(stderr, "FAIL: ASN1_TYPE_get_int_octetstring failed\n");
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goto done;
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}
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if (num != TEST_NUM) {
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fprintf(stderr, "FAIL: got num %ld, want %ld\n", num, TEST_NUM);
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goto done;
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}
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if (compare_data("octet string", data, len,
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test_octetstring, sizeof(test_octetstring)) == -1)
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goto done;
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if (data[len] != 0) {
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fprintf(stderr, "FAIL: octet string overflowed buffer\n");
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goto done;
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}
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memset(&data, 0, sizeof(data));
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num = 0;
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/* With a limit buffer, the output should be truncated... */
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if ((len = ASN1_TYPE_get_int_octetstring(at, &num, data, 4)) < 0) {
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fprintf(stderr, "FAIL: ASN1_TYPE_get_int_octetstring failed\n");
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goto done;
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}
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if (num != TEST_NUM) {
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fprintf(stderr, "FAIL: got num %ld, want %ld\n", num, TEST_NUM);
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goto done;
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}
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if (len != sizeof(test_octetstring)) {
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fprintf(stderr, "FAIL: got length mismatch (%d != %zu)\n",
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len, sizeof(test_octetstring));
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goto done;
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}
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if (compare_data("octet string", data, 4, test_octetstring, 4) == -1)
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goto done;
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if (data[4] != 0) {
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fprintf(stderr, "FAIL: octet string overflowed buffer\n");
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goto done;
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}
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failed = 0;
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done:
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ASN1_TYPE_free(at);
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return failed;
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}
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