static int test_cbb_fixed(void) {
CBB cbb;
uint8_t buf[1];
uint8_t *out_buf;
size_t out_size;
if (!CBB_init_fixed(&cbb, NULL, 0) ||
CBB_add_u8(&cbb, 1) ||
!CBB_finish(&cbb, &out_buf, &out_size) ||
out_buf != NULL ||
out_size != 0) {
return 0;
}
if (!CBB_init_fixed(&cbb, buf, 1) ||
!CBB_add_u8(&cbb, 1) ||
CBB_add_u8(&cbb, 2) ||
!CBB_finish(&cbb, &out_buf, &out_size) ||
out_buf != buf ||
out_size != 1 ||
buf[0] != 1) {
return 0;
}
return 1;
}
int ECDSA_sign_ex(int type, const uint8_t *digest, size_t digest_len,
uint8_t *sig, unsigned int *sig_len, const BIGNUM *kinv,
const BIGNUM *r, EC_KEY *eckey) {
int ret = 0;
ECDSA_SIG *s = NULL;
s = ECDSA_do_sign_ex(digest, digest_len, kinv, r, eckey);
if (s == NULL) {
*sig_len = 0;
goto err;
}
CBB cbb;
CBB_zero(&cbb);
size_t len;
if (!CBB_init_fixed(&cbb, sig, ECDSA_size(eckey)) ||
!ECDSA_SIG_marshal(&cbb, s) ||
!CBB_finish(&cbb, NULL, &len)) {
OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
CBB_cleanup(&cbb);
*sig_len = 0;
goto err;
}
*sig_len = (unsigned)len;
ret = 1;
err:
ECDSA_SIG_free(s);
return ret;
}
static int hkdf_expand_label(uint8_t *out, const EVP_MD *digest,
const uint8_t *secret, size_t secret_len,
const uint8_t *label, size_t label_len,
const uint8_t *hash, size_t hash_len, size_t len) {
static const char kTLS13LabelVersion[] = "TLS 1.3, ";
CBB cbb, child;
uint8_t *hkdf_label;
size_t hkdf_label_len;
if (!CBB_init(&cbb, 2 + 1 + strlen(kTLS13LabelVersion) + label_len + 1 +
hash_len) ||
!CBB_add_u16(&cbb, len) ||
!CBB_add_u8_length_prefixed(&cbb, &child) ||
!CBB_add_bytes(&child, (const uint8_t *)kTLS13LabelVersion,
strlen(kTLS13LabelVersion)) ||
!CBB_add_bytes(&child, label, label_len) ||
!CBB_add_u8_length_prefixed(&cbb, &child) ||
!CBB_add_bytes(&child, hash, hash_len) ||
!CBB_finish(&cbb, &hkdf_label, &hkdf_label_len)) {
CBB_cleanup(&cbb);
return 0;
}
int ret = HKDF_expand(out, len, digest, secret, secret_len, hkdf_label,
hkdf_label_len);
OPENSSL_free(hkdf_label);
return ret;
}
int CBS_asn1_ber_to_der(CBS *in, uint8_t **out, size_t *out_len) {
CBB cbb;
/* First, do a quick walk to find any indefinite-length elements. Most of the
* time we hope that there aren't any and thus we can quickly return. */
char conversion_needed;
if (!cbs_find_ber(in, &conversion_needed, 0)) {
return 0;
}
if (!conversion_needed) {
*out = NULL;
*out_len = 0;
return 1;
}
if (!CBB_init(&cbb, CBS_len(in)) ||
!cbs_convert_ber(in, &cbb, 0, 0, 0) ||
!CBB_finish(&cbb, out, out_len)) {
CBB_cleanup(&cbb);
return 0;
}
return 1;
}
static int test_cbb_misuse(void) {
CBB cbb, child, contents;
uint8_t *buf;
size_t buf_len;
if (!CBB_init(&cbb, 0) ||
!CBB_add_u8_length_prefixed(&cbb, &child) ||
!CBB_add_u8(&child, 1) ||
!CBB_add_u8(&cbb, 2)) {
return 0;
}
/* Since we wrote to |cbb|, |child| is now invalid and attempts to write to
* it should fail. */
if (CBB_add_u8(&child, 1) ||
CBB_add_u16(&child, 1) ||
CBB_add_u24(&child, 1) ||
CBB_add_u8_length_prefixed(&child, &contents) ||
CBB_add_u16_length_prefixed(&child, &contents) ||
CBB_add_asn1(&child, &contents, 1) ||
CBB_add_bytes(&child, (const uint8_t*) "a", 1)) {
fprintf(stderr, "CBB operation on invalid CBB did not fail.\n");
return 0;
}
if (!CBB_finish(&cbb, &buf, &buf_len) ||
buf_len != 3 ||
memcmp(buf, "\x01\x01\x02", 3) != 0) {
return 0;
}
free(buf);
return 1;
}
static int test_cbb_prefixed(void) {
static const uint8_t kExpected[] = {0, 1, 1, 0, 2, 2, 3, 0, 0, 3,
4, 5, 6, 5, 4, 1, 0, 1, 2};
uint8_t *buf;
size_t buf_len;
CBB cbb, contents, inner_contents, inner_inner_contents;
int ok;
if (!CBB_init(&cbb, 0) ||
!CBB_add_u8_length_prefixed(&cbb, &contents) ||
!CBB_add_u8_length_prefixed(&cbb, &contents) ||
!CBB_add_u8(&contents, 1) ||
!CBB_add_u16_length_prefixed(&cbb, &contents) ||
!CBB_add_u16(&contents, 0x203) ||
!CBB_add_u24_length_prefixed(&cbb, &contents) ||
!CBB_add_u24(&contents, 0x40506) ||
!CBB_add_u8_length_prefixed(&cbb, &contents) ||
!CBB_add_u8_length_prefixed(&contents, &inner_contents) ||
!CBB_add_u8(&inner_contents, 1) ||
!CBB_add_u16_length_prefixed(&inner_contents, &inner_inner_contents) ||
!CBB_add_u8(&inner_inner_contents, 2) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
ok = buf_len == sizeof(kExpected) && memcmp(buf, kExpected, buf_len) == 0;
free(buf);
return ok;
}
static int test_cbb_basic(void) {
static const uint8_t kExpected[] = {1, 2, 3, 4, 5, 6, 7, 8};
uint8_t *buf;
size_t buf_len;
int ok;
CBB cbb;
if (!CBB_init(&cbb, 100)) {
return 0;
}
CBB_cleanup(&cbb);
if (!CBB_init(&cbb, 0) ||
!CBB_add_u8(&cbb, 1) ||
!CBB_add_u16(&cbb, 0x203) ||
!CBB_add_u24(&cbb, 0x40506) ||
!CBB_add_bytes(&cbb, (const uint8_t*) "\x07\x08", 2) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
ok = buf_len == sizeof(kExpected) && memcmp(buf, kExpected, buf_len) == 0;
free(buf);
return ok;
}
static int test_cbb_finish_child(void) {
CBB cbb, child;
uint8_t *out_buf;
size_t out_size;
if (!CBB_init(&cbb, 16) ||
!CBB_add_u8_length_prefixed(&cbb, &child) ||
CBB_finish(&child, &out_buf, &out_size) ||
!CBB_finish(&cbb, &out_buf, &out_size) ||
out_size != 1 ||
out_buf[0] != 0) {
return 0;
}
free(out_buf);
return 1;
}
MONO_API MonoBtlsX509Name *
mono_btls_x509_name_from_data (const void *data, int len, int use_canon_enc)
{
MonoBtlsX509Name *name;
uint8_t *buf;
const unsigned char *ptr;
X509_NAME *ret;
name = OPENSSL_malloc (sizeof (MonoBtlsX509Name));
if (!name)
return NULL;
memset (name, 0, sizeof(MonoBtlsX509Name));
name->owns = 1;
name->name = X509_NAME_new ();
if (!name->name) {
OPENSSL_free (name);
return NULL;
}
if (use_canon_enc) {
CBB cbb, contents;
size_t buf_len;
// re-add ASN1 SEQUENCE header.
CBB_init(&cbb, 0);
if (!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, data, len) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
CBB_cleanup (&cbb);
mono_btls_x509_name_free (name);
return NULL;
}
ptr = buf;
len = (int)buf_len;
} else {
ptr = data;
buf = NULL;
}
ret = d2i_X509_NAME (&name->name, &ptr, len);
if (buf)
OPENSSL_free (buf);
if (ret != name->name) {
mono_btls_x509_name_free (name);
return NULL;
}
return name;
}
int tls13_get_cert_verify_signature_input(
SSL *ssl, uint8_t **out, size_t *out_len,
enum ssl_cert_verify_context_t cert_verify_context) {
CBB cbb;
if (!CBB_init(&cbb, 64 + 33 + 1 + 2 * EVP_MAX_MD_SIZE)) {
goto err;
}
for (size_t i = 0; i < 64; i++) {
if (!CBB_add_u8(&cbb, 0x20)) {
goto err;
}
}
const uint8_t *context;
size_t context_len;
if (cert_verify_context == ssl_cert_verify_server) {
/* Include the NUL byte. */
static const char kContext[] = "TLS 1.3, server CertificateVerify";
context = (const uint8_t *)kContext;
context_len = sizeof(kContext);
} else if (cert_verify_context == ssl_cert_verify_client) {
static const char kContext[] = "TLS 1.3, client CertificateVerify";
context = (const uint8_t *)kContext;
context_len = sizeof(kContext);
} else if (cert_verify_context == ssl_cert_verify_channel_id) {
static const char kContext[] = "TLS 1.3, Channel ID";
context = (const uint8_t *)kContext;
context_len = sizeof(kContext);
} else {
goto err;
}
if (!CBB_add_bytes(&cbb, context, context_len)) {
goto err;
}
uint8_t context_hash[EVP_MAX_MD_SIZE];
size_t context_hash_len;
if (!tls13_get_context_hash(ssl, context_hash, &context_hash_len) ||
!CBB_add_bytes(&cbb, context_hash, context_hash_len) ||
!CBB_finish(&cbb, out, out_len)) {
goto err;
}
return 1;
err:
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
CBB_cleanup(&cbb);
return 0;
}
int RSA_private_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
const RSA *rsa) {
CBB cbb;
CBB_zero(&cbb);
if (!CBB_init(&cbb, 0) ||
!RSA_marshal_private_key(&cbb, rsa) ||
!CBB_finish(&cbb, out_bytes, out_len)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
CBB_cleanup(&cbb);
return 0;
}
return 1;
}
int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
const ECDSA_SIG *sig) {
CBB cbb;
CBB_zero(&cbb);
if (!CBB_init(&cbb, 0) ||
!ECDSA_SIG_marshal(&cbb, sig) ||
!CBB_finish(&cbb, out_bytes, out_len)) {
OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
CBB_cleanup(&cbb);
return 0;
}
return 1;
}
static int test_asn1_uint64(void) {
size_t i;
for (i = 0; i < sizeof(kAsn1Uint64Tests) / sizeof(kAsn1Uint64Tests[0]); i++) {
const ASN1_UINT64_TEST *test = &kAsn1Uint64Tests[i];
CBS cbs;
uint64_t value;
CBB cbb;
uint8_t *out;
size_t len;
CBS_init(&cbs, (const uint8_t *)test->encoding, test->encoding_len);
if (!CBS_get_asn1_uint64(&cbs, &value) ||
CBS_len(&cbs) != 0 ||
value != test->value) {
return 0;
}
if (!CBB_init(&cbb, 0)) {
return 0;
}
if (!CBB_add_asn1_uint64(&cbb, test->value) ||
!CBB_finish(&cbb, &out, &len)) {
CBB_cleanup(&cbb);
return 0;
}
if (len != test->encoding_len || memcmp(out, test->encoding, len) != 0) {
free(out);
return 0;
}
free(out);
}
for (i = 0;
i < sizeof(kAsn1InvalidUint64Tests) / sizeof(kAsn1InvalidUint64Tests[0]);
i++) {
const ASN1_INVALID_UINT64_TEST *test = &kAsn1InvalidUint64Tests[i];
CBS cbs;
uint64_t value;
CBS_init(&cbs, (const uint8_t *)test->encoding, test->encoding_len);
if (CBS_get_asn1_uint64(&cbs, &value)) {
return 0;
}
}
return 1;
}
int CBS_get_asn1_implicit_string(CBS *in, CBS *out, uint8_t **out_storage,
unsigned outer_tag, unsigned inner_tag) {
assert(!(outer_tag & CBS_ASN1_CONSTRUCTED));
assert(!(inner_tag & CBS_ASN1_CONSTRUCTED));
assert(is_string_type(inner_tag));
if (CBS_peek_asn1_tag(in, outer_tag)) {
/* Normal implicitly-tagged string. */
*out_storage = NULL;
return CBS_get_asn1(in, out, outer_tag);
}
/* Otherwise, try to parse an implicitly-tagged constructed string.
* |CBS_asn1_ber_to_der| is assumed to have run, so only allow one level deep
* of nesting. */
CBB result;
CBS child;
if (!CBB_init(&result, CBS_len(in)) ||
!CBS_get_asn1(in, &child, outer_tag | CBS_ASN1_CONSTRUCTED)) {
goto err;
}
while (CBS_len(&child) > 0) {
CBS chunk;
if (!CBS_get_asn1(&child, &chunk, inner_tag) ||
!CBB_add_bytes(&result, CBS_data(&chunk), CBS_len(&chunk))) {
goto err;
}
}
uint8_t *data;
size_t len;
if (!CBB_finish(&result, &data, &len)) {
goto err;
}
CBS_init(out, data, len);
*out_storage = data;
return 1;
err:
CBB_cleanup(&result);
return 0;
}
static int tls13_get_cert_verify_signature_input(SSL *ssl, uint8_t **out,
size_t *out_len, int server) {
CBB cbb;
if (!CBB_init(&cbb, 64 + 33 + 1 + 2 * EVP_MAX_MD_SIZE)) {
goto err;
}
for (size_t i = 0; i < 64; i++) {
if (!CBB_add_u8(&cbb, 0x20)) {
goto err;
}
}
if (server) {
/* Include the NUL byte. */
static const char kContext[] = "TLS 1.3, server CertificateVerify";
if (!CBB_add_bytes(&cbb, (const uint8_t *)kContext, sizeof(kContext))) {
goto err;
}
} else {
static const char kContext[] = "TLS 1.3, client CertificateVerify";
if (!CBB_add_bytes(&cbb, (const uint8_t *)kContext, sizeof(kContext))) {
goto err;
}
}
uint8_t context_hashes[2 * EVP_MAX_MD_SIZE];
size_t context_hashes_len;
if (!tls13_get_context_hashes(ssl, context_hashes, &context_hashes_len) ||
!CBB_add_bytes(&cbb, context_hashes, context_hashes_len) ||
!CBB_finish(&cbb, out, out_len)) {
goto err;
}
return 1;
err:
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
CBB_cleanup(&cbb);
return 0;
}
static int test_crl_reparse(const uint8_t *der_bytes, size_t der_len) {
CBS pkcs7;
CBB cbb;
STACK_OF(X509_CRL) *crls = sk_X509_CRL_new_null();
STACK_OF(X509_CRL) *crls2 = sk_X509_CRL_new_null();
uint8_t *result_data, *result2_data;
size_t result_len, result2_len, i;
CBS_init(&pkcs7, der_bytes, der_len);
if (!PKCS7_get_CRLs(crls, &pkcs7)) {
fprintf(stderr, "PKCS7_get_CRLs failed.\n");
return 0;
}
CBB_init(&cbb, der_len);
if (!PKCS7_bundle_CRLs(&cbb, crls) ||
!CBB_finish(&cbb, &result_data, &result_len)) {
fprintf(stderr, "PKCS7_bundle_CRLs failed.\n");
return 0;
}
CBS_init(&pkcs7, result_data, result_len);
if (!PKCS7_get_CRLs(crls2, &pkcs7)) {
fprintf(stderr, "PKCS7_get_CRLs reparse failed.\n");
return 0;
}
if (sk_X509_CRL_num(crls) != sk_X509_CRL_num(crls)) {
fprintf(stderr, "Number of CRLs in results differ.\n");
return 0;
}
for (i = 0; i < sk_X509_CRL_num(crls); i++) {
X509_CRL *a = sk_X509_CRL_value(crls, i);
X509_CRL *b = sk_X509_CRL_value(crls2, i);
if (X509_CRL_cmp(a, b) != 0) {
fprintf(stderr, "CRL %u differs.\n", (unsigned) i);
return 0;
}
}
CBB_init(&cbb, der_len);
if (!PKCS7_bundle_CRLs(&cbb, crls2) ||
!CBB_finish(&cbb, &result2_data, &result2_len)) {
fprintf(stderr,
"PKCS7_bundle_CRLs failed the second time.\n");
return 0;
}
if (result_len != result2_len ||
memcmp(result_data, result2_data, result_len) != 0) {
fprintf(stderr, "Serialisation is not stable.\n");
return 0;
}
OPENSSL_free(result_data);
OPENSSL_free(result2_data);
sk_X509_CRL_pop_free(crls, X509_CRL_free);
sk_X509_CRL_pop_free(crls2, X509_CRL_free);
return 1;
}
static int test_cbb_asn1(void) {
static const uint8_t kExpected[] = {0x30, 3, 1, 2, 3};
uint8_t *buf, *test_data;
size_t buf_len;
CBB cbb, contents, inner_contents;
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, (const uint8_t*) "\x01\x02\x03", 3) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != sizeof(kExpected) || memcmp(buf, kExpected, buf_len) != 0) {
return 0;
}
free(buf);
test_data = malloc(100000);
memset(test_data, 0x42, 100000);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, test_data, 130) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != 3 + 130 ||
memcmp(buf, "\x30\x81\x82", 3) != 0 ||
memcmp(buf + 3, test_data, 130) != 0) {
return 0;
}
free(buf);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, test_data, 1000) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != 4 + 1000 ||
memcmp(buf, "\x30\x82\x03\xe8", 4) != 0 ||
memcmp(buf + 4, test_data, 1000)) {
return 0;
}
free(buf);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_asn1(&contents, &inner_contents, 0x30) ||
!CBB_add_bytes(&inner_contents, test_data, 100000) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != 5 + 5 + 100000 ||
memcmp(buf, "\x30\x83\x01\x86\xa5\x30\x83\x01\x86\xa0", 10) != 0 ||
memcmp(buf + 10, test_data, 100000)) {
return 0;
}
free(buf);
free(test_data);
return 1;
}
int
i2d_SSL_SESSION(SSL_SESSION *s, unsigned char **pp)
{
CBB cbb, session, cipher_suite, session_id, master_key, time, timeout;
CBB peer_cert, sidctx, verify_result, hostname, lifetime, ticket;
CBB value;
unsigned char *data = NULL, *peer_cert_bytes = NULL;
size_t data_len = 0;
int len, rv = -1;
uint16_t cid;
if (s == NULL)
return (0);
if (s->cipher == NULL && s->cipher_id == 0)
return (0);
if (!CBB_init(&cbb, 0))
goto err;
if (!CBB_add_asn1(&cbb, &session, CBS_ASN1_SEQUENCE))
goto err;
/* Session ASN1 version. */
if (!CBB_add_asn1_uint64(&session, SSL_SESSION_ASN1_VERSION))
goto err;
/* TLS/SSL protocol version. */
if (s->ssl_version < 0)
goto err;
if (!CBB_add_asn1_uint64(&session, s->ssl_version))
goto err;
/* Cipher suite ID. */
/* XXX - require cipher to be non-NULL or always/only use cipher_id. */
cid = (uint16_t)(s->cipher_id & 0xffff);
if (s->cipher != NULL)
cid = ssl3_cipher_get_value(s->cipher);
if (!CBB_add_asn1(&session, &cipher_suite, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_u16(&cipher_suite, cid))
goto err;
/* Session ID. */
if (!CBB_add_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&session_id, s->session_id, s->session_id_length))
goto err;
/* Master key. */
if (!CBB_add_asn1(&session, &master_key, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&master_key, s->master_key, s->master_key_length))
goto err;
/* Time [1]. */
if (s->time != 0) {
if (s->time < 0)
goto err;
if (!CBB_add_asn1(&session, &time, SSLASN1_TIME_TAG))
goto err;
if (!CBB_add_asn1_uint64(&time, s->time))
goto err;
}
/* Timeout [2]. */
if (s->timeout != 0) {
if (s->timeout < 0)
goto err;
if (!CBB_add_asn1(&session, &timeout, SSLASN1_TIMEOUT_TAG))
goto err;
if (!CBB_add_asn1_uint64(&timeout, s->timeout))
goto err;
}
/* Peer certificate [3]. */
if (s->peer != NULL) {
if ((len = i2d_X509(s->peer, &peer_cert_bytes)) <= 0)
goto err;
if (!CBB_add_asn1(&session, &peer_cert, SSLASN1_PEER_CERT_TAG))
goto err;
if (!CBB_add_bytes(&peer_cert, peer_cert_bytes, len))
goto err;
}
/* Session ID context [4]. */
/* XXX - Actually handle this as optional? */
if (!CBB_add_asn1(&session, &sidctx, SSLASN1_SESSION_ID_CTX_TAG))
goto err;
if (!CBB_add_asn1(&sidctx, &value, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&value, s->sid_ctx, s->sid_ctx_length))
goto err;
/* Verify result [5]. */
if (s->verify_result != X509_V_OK) {
if (s->verify_result < 0)
goto err;
if (!CBB_add_asn1(&session, &verify_result,
SSLASN1_VERIFY_RESULT_TAG))
goto err;
if (!CBB_add_asn1_uint64(&verify_result, s->verify_result))
goto err;
}
/* Hostname [6]. */
if (s->tlsext_hostname != NULL) {
if (!CBB_add_asn1(&session, &hostname, SSLASN1_HOSTNAME_TAG))
goto err;
if (!CBB_add_asn1(&hostname, &value, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&value, (const uint8_t *)s->tlsext_hostname,
strlen(s->tlsext_hostname)))
goto err;
}
/* PSK identity hint [7]. */
/* PSK identity [8]. */
/* Ticket lifetime hint [9]. */
if (s->tlsext_tick_lifetime_hint > 0) {
if (!CBB_add_asn1(&session, &lifetime, SSLASN1_LIFETIME_TAG))
goto err;
if (!CBB_add_asn1_uint64(&lifetime,
s->tlsext_tick_lifetime_hint))
goto err;
}
/* Ticket [10]. */
if (s->tlsext_tick) {
if (!CBB_add_asn1(&session, &ticket, SSLASN1_TICKET_TAG))
goto err;
if (!CBB_add_asn1(&ticket, &value, CBS_ASN1_OCTETSTRING))
goto err;
if (!CBB_add_bytes(&value, s->tlsext_tick, s->tlsext_ticklen))
goto err;
}
/* Compression method [11]. */
/* SRP username [12]. */
if (!CBB_finish(&cbb, &data, &data_len))
goto err;
if (data_len > INT_MAX)
goto err;
if (pp != NULL) {
if (*pp == NULL) {
*pp = data;
data = NULL;
} else {
memcpy(*pp, data, data_len);
*pp += data_len;
}
}
rv = (int)data_len;
err:
CBB_cleanup(&cbb);
freezero(data, data_len);
free(peer_cert_bytes);
return rv;
}
static int SSL_SESSION_to_bytes_full(const SSL_SESSION *in, uint8_t **out_data,
size_t *out_len, int for_ticket) {
CBB cbb, session, child, child2;
if (in == NULL || in->cipher == NULL) {
return 0;
}
CBB_zero(&cbb);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &session, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&session, kVersion) ||
!CBB_add_asn1_uint64(&session, in->ssl_version) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
!CBB_add_u16(&child, (uint16_t)(in->cipher->id & 0xffff)) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
/* The session ID is irrelevant for a session ticket. */
!CBB_add_bytes(&child, in->session_id,
for_ticket ? 0 : in->session_id_length) ||
!CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child, in->master_key, in->master_key_length) ||
!CBB_add_asn1(&session, &child, kTimeTag) ||
!CBB_add_asn1_uint64(&child, in->time) ||
!CBB_add_asn1(&session, &child, kTimeoutTag) ||
!CBB_add_asn1_uint64(&child, in->timeout)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
/* The peer certificate is only serialized if the SHA-256 isn't
* serialized instead. */
if (sk_CRYPTO_BUFFER_num(in->certs) > 0 && !in->peer_sha256_valid) {
const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs, 0);
if (!CBB_add_asn1(&session, &child, kPeerTag) ||
!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
CRYPTO_BUFFER_len(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
/* Although it is OPTIONAL and usually empty, OpenSSL has
* historically always encoded the sid_ctx. */
if (!CBB_add_asn1(&session, &child, kSessionIDContextTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->sid_ctx, in->sid_ctx_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->verify_result != X509_V_OK) {
if (!CBB_add_asn1(&session, &child, kVerifyResultTag) ||
!CBB_add_asn1_uint64(&child, in->verify_result)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_hostname) {
if (!CBB_add_asn1(&session, &child, kHostNameTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, (const uint8_t *)in->tlsext_hostname,
strlen(in->tlsext_hostname))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->psk_identity) {
if (!CBB_add_asn1(&session, &child, kPSKIdentityTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, (const uint8_t *)in->psk_identity,
strlen(in->psk_identity))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_tick_lifetime_hint > 0) {
if (!CBB_add_asn1(&session, &child, kTicketLifetimeHintTag) ||
!CBB_add_asn1_uint64(&child, in->tlsext_tick_lifetime_hint)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_tick && !for_ticket) {
if (!CBB_add_asn1(&session, &child, kTicketTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->tlsext_tick, in->tlsext_ticklen)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->peer_sha256_valid) {
if (!CBB_add_asn1(&session, &child, kPeerSHA256Tag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->peer_sha256, sizeof(in->peer_sha256))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->original_handshake_hash_len > 0) {
if (!CBB_add_asn1(&session, &child, kOriginalHandshakeHashTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->original_handshake_hash,
in->original_handshake_hash_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->tlsext_signed_cert_timestamp_list_length > 0) {
if (!CBB_add_asn1(&session, &child, kSignedCertTimestampListTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->tlsext_signed_cert_timestamp_list,
in->tlsext_signed_cert_timestamp_list_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->ocsp_response_length > 0) {
if (!CBB_add_asn1(&session, &child, kOCSPResponseTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, in->ocsp_response, in->ocsp_response_length)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->extended_master_secret) {
if (!CBB_add_asn1(&session, &child, kExtendedMasterSecretTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_BOOLEAN) ||
!CBB_add_u8(&child2, 0xff)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->group_id > 0 &&
(!CBB_add_asn1(&session, &child, kGroupIDTag) ||
!CBB_add_asn1_uint64(&child, in->group_id))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
/* The certificate chain is only serialized if the leaf's SHA-256 isn't
* serialized instead. */
if (in->certs != NULL &&
!in->peer_sha256_valid &&
sk_CRYPTO_BUFFER_num(in->certs) >= 2) {
if (!CBB_add_asn1(&session, &child, kCertChainTag)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(in->certs); i++) {
const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs, i);
if (!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
CRYPTO_BUFFER_len(buffer))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
}
if (in->ticket_age_add_valid) {
if (!CBB_add_asn1(&session, &child, kTicketAgeAddTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_u32(&child2, in->ticket_age_add)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (!in->is_server) {
if (!CBB_add_asn1(&session, &child, kIsServerTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_BOOLEAN) ||
!CBB_add_u8(&child2, 0x00)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (in->peer_signature_algorithm != 0 &&
(!CBB_add_asn1(&session, &child, kPeerSignatureAlgorithmTag) ||
!CBB_add_asn1_uint64(&child, in->peer_signature_algorithm))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->ticket_max_early_data != 0 &&
(!CBB_add_asn1(&session, &child, kTicketMaxEarlyDataTag) ||
!CBB_add_asn1_uint64(&child, in->ticket_max_early_data))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->timeout != in->auth_timeout &&
(!CBB_add_asn1(&session, &child, kAuthTimeoutTag) ||
!CBB_add_asn1_uint64(&child, in->auth_timeout))) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (in->early_alpn) {
if (!CBB_add_asn1(&session, &child, kEarlyALPNTag) ||
!CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
!CBB_add_bytes(&child2, (const uint8_t *)in->early_alpn,
in->early_alpn_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (!CBB_finish(&cbb, out_data, out_len)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
return 1;
err:
CBB_cleanup(&cbb);
return 0;
}
