ssize_t
trn_cell_introduce_ack_encode(uint8_t *output, const size_t avail, const trn_cell_introduce_ack_t *obj)
{
ssize_t result = 0;
size_t written = 0;
uint8_t *ptr = output;
const char *msg;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
const ssize_t encoded_len = trn_cell_introduce_ack_encoded_len(obj);
#endif
if (NULL != (msg = trn_cell_introduce_ack_check(obj)))
goto check_failed;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
trunnel_assert(encoded_len >= 0);
#endif
/* Encode u16 status IN [0, 1, 2] */
trunnel_assert(written <= avail);
if (avail - written < 2)
goto truncated;
trunnel_set_uint16(ptr, trunnel_htons(obj->status));
written += 2; ptr += 2;
/* Encode struct trn_cell_extension extensions */
trunnel_assert(written <= avail);
result = trn_cell_extension_encode(ptr, avail - written, obj->extensions);
if (result < 0)
goto fail; /* XXXXXXX !*/
written += result; ptr += result;
trunnel_assert(ptr == output + written);
#ifdef TRUNNEL_CHECK_ENCODED_LEN
{
trunnel_assert(encoded_len >= 0);
trunnel_assert((size_t)encoded_len == written);
}
#endif
return written;
truncated:
result = -2;
goto fail;
check_failed:
(void)msg;
result = -1;
goto fail;
fail:
trunnel_assert(result < 0);
return result;
}
ssize_t
trn_cell_introduce1_encode(uint8_t *output, const size_t avail, const trn_cell_introduce1_t *obj)
{
ssize_t result = 0;
size_t written = 0;
uint8_t *ptr = output;
const char *msg;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
const ssize_t encoded_len = trn_cell_introduce1_encoded_len(obj);
#endif
if (NULL != (msg = trn_cell_introduce1_check(obj)))
goto check_failed;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
trunnel_assert(encoded_len >= 0);
#endif
/* Encode u8 legacy_key_id[TRUNNEL_SHA1_LEN] */
trunnel_assert(written <= avail);
if (avail - written < TRUNNEL_SHA1_LEN)
goto truncated;
memcpy(ptr, obj->legacy_key_id, TRUNNEL_SHA1_LEN);
written += TRUNNEL_SHA1_LEN; ptr += TRUNNEL_SHA1_LEN;
/* Encode u8 auth_key_type IN [0, 1, 2] */
trunnel_assert(written <= avail);
if (avail - written < 1)
goto truncated;
trunnel_set_uint8(ptr, (obj->auth_key_type));
written += 1; ptr += 1;
/* Encode u16 auth_key_len */
trunnel_assert(written <= avail);
if (avail - written < 2)
goto truncated;
trunnel_set_uint16(ptr, trunnel_htons(obj->auth_key_len));
written += 2; ptr += 2;
/* Encode u8 auth_key[auth_key_len] */
{
size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->auth_key);
trunnel_assert(obj->auth_key_len == elt_len);
trunnel_assert(written <= avail);
if (avail - written < elt_len)
goto truncated;
if (elt_len)
memcpy(ptr, obj->auth_key.elts_, elt_len);
written += elt_len; ptr += elt_len;
}
/* Encode struct trn_cell_extension extensions */
trunnel_assert(written <= avail);
result = trn_cell_extension_encode(ptr, avail - written, obj->extensions);
if (result < 0)
goto fail; /* XXXXXXX !*/
written += result; ptr += result;
/* Encode u8 encrypted[] */
{
size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->encrypted);
trunnel_assert(written <= avail);
if (avail - written < elt_len)
goto truncated;
if (elt_len)
memcpy(ptr, obj->encrypted.elts_, elt_len);
written += elt_len; ptr += elt_len;
}
trunnel_assert(ptr == output + written);
#ifdef TRUNNEL_CHECK_ENCODED_LEN
{
trunnel_assert(encoded_len >= 0);
trunnel_assert((size_t)encoded_len == written);
}
#endif
return written;
truncated:
result = -2;
goto fail;
check_failed:
(void)msg;
result = -1;
goto fail;
fail:
trunnel_assert(result < 0);
return result;
}
ssize_t
auth_challenge_cell_encode(uint8_t *output, const size_t avail, const auth_challenge_cell_t *obj)
{
ssize_t result = 0;
size_t written = 0;
uint8_t *ptr = output;
const char *msg;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
const ssize_t encoded_len = auth_challenge_cell_encoded_len(obj);
#endif
if (NULL != (msg = auth_challenge_cell_check(obj)))
goto check_failed;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
trunnel_assert(encoded_len >= 0);
#endif
/* Encode u8 challenge[32] */
trunnel_assert(written <= avail);
if (avail - written < 32)
goto truncated;
memcpy(ptr, obj->challenge, 32);
written += 32; ptr += 32;
/* Encode u16 n_methods */
trunnel_assert(written <= avail);
if (avail - written < 2)
goto truncated;
trunnel_set_uint16(ptr, trunnel_htons(obj->n_methods));
written += 2; ptr += 2;
/* Encode u16 methods[n_methods] */
{
unsigned idx;
for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->methods); ++idx) {
trunnel_assert(written <= avail);
if (avail - written < 2)
goto truncated;
trunnel_set_uint16(ptr, trunnel_htons(TRUNNEL_DYNARRAY_GET(&obj->methods, idx)));
written += 2; ptr += 2;
}
}
trunnel_assert(ptr == output + written);
#ifdef TRUNNEL_CHECK_ENCODED_LEN
{
trunnel_assert(encoded_len >= 0);
trunnel_assert((size_t)encoded_len == written);
}
#endif
return written;
truncated:
result = -2;
goto fail;
check_failed:
(void)msg;
result = -1;
goto fail;
fail:
trunnel_assert(result < 0);
return result;
}
ssize_t
certs_cell_cert_encode(uint8_t *output, const size_t avail, const certs_cell_cert_t *obj)
{
ssize_t result = 0;
size_t written = 0;
uint8_t *ptr = output;
const char *msg;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
const ssize_t encoded_len = certs_cell_cert_encoded_len(obj);
#endif
if (NULL != (msg = certs_cell_cert_check(obj)))
goto check_failed;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
trunnel_assert(encoded_len >= 0);
#endif
/* Encode u8 cert_type */
trunnel_assert(written <= avail);
if (avail - written < 1)
goto truncated;
trunnel_set_uint8(ptr, (obj->cert_type));
written += 1; ptr += 1;
/* Encode u16 cert_len */
trunnel_assert(written <= avail);
if (avail - written < 2)
goto truncated;
trunnel_set_uint16(ptr, trunnel_htons(obj->cert_len));
written += 2; ptr += 2;
/* Encode u8 body[cert_len] */
{
size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->body);
trunnel_assert(obj->cert_len == elt_len);
trunnel_assert(written <= avail);
if (avail - written < elt_len)
goto truncated;
memcpy(ptr, obj->body.elts_, elt_len);
written += elt_len; ptr += elt_len;
}
trunnel_assert(ptr == output + written);
#ifdef TRUNNEL_CHECK_ENCODED_LEN
{
trunnel_assert(encoded_len >= 0);
trunnel_assert((size_t)encoded_len == written);
}
#endif
return written;
truncated:
result = -2;
goto fail;
check_failed:
(void)msg;
result = -1;
goto fail;
fail:
trunnel_assert(result < 0);
return result;
}
ssize_t
ed25519_cert_extension_encode(uint8_t *output, const size_t avail, const ed25519_cert_extension_t *obj)
{
ssize_t result = 0;
size_t written = 0;
uint8_t *ptr = output;
const char *msg;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
const ssize_t encoded_len = ed25519_cert_extension_encoded_len(obj);
#endif
uint8_t *backptr_ext_length = NULL;
if (NULL != (msg = ed25519_cert_extension_check(obj)))
goto check_failed;
#ifdef TRUNNEL_CHECK_ENCODED_LEN
trunnel_assert(encoded_len >= 0);
#endif
/* Encode u16 ext_length */
backptr_ext_length = ptr;
trunnel_assert(written <= avail);
if (avail - written < 2)
goto truncated;
trunnel_set_uint16(ptr, trunnel_htons(obj->ext_length));
written += 2; ptr += 2;
/* Encode u8 ext_type */
trunnel_assert(written <= avail);
if (avail - written < 1)
goto truncated;
trunnel_set_uint8(ptr, (obj->ext_type));
written += 1; ptr += 1;
/* Encode u8 ext_flags */
trunnel_assert(written <= avail);
if (avail - written < 1)
goto truncated;
trunnel_set_uint8(ptr, (obj->ext_flags));
written += 1; ptr += 1;
{
size_t written_before_union = written;
/* Encode union un[ext_type] */
trunnel_assert(written <= avail);
switch (obj->ext_type) {
case CERTEXT_SIGNED_WITH_KEY:
/* Encode u8 un_signing_key[32] */
trunnel_assert(written <= avail);
if (avail - written < 32)
goto truncated;
memcpy(ptr, obj->un_signing_key, 32);
written += 32; ptr += 32;
break;
default:
/* Encode u8 un_unparsed[] */
{
size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->un_unparsed);
trunnel_assert(written <= avail);
if (avail - written < elt_len)
goto truncated;
memcpy(ptr, obj->un_unparsed.elts_, elt_len);
written += elt_len; ptr += elt_len;
}
break;
}
/* Write the length field back to ext_length */
trunnel_assert(written >= written_before_union);
#if UINT16_MAX < SIZE_MAX
if (written - written_before_union > UINT16_MAX)
goto check_failed;
#endif
trunnel_set_uint16(backptr_ext_length, trunnel_htons(written - written_before_union));
}
trunnel_assert(ptr == output + written);
#ifdef TRUNNEL_CHECK_ENCODED_LEN
{
trunnel_assert(encoded_len >= 0);
trunnel_assert((size_t)encoded_len == written);
}
#endif
return written;
truncated:
result = -2;
goto fail;
check_failed:
(void)msg;
result = -1;
goto fail;
fail:
trunnel_assert(result < 0);
return result;
}
