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fix(core): Clean up when constructor fails to reduce memory fragmentation.

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This commit is contained in:
Andrew Kozlik 2024-03-26 09:47:14 +01:00 committed by Andrew Kozlik
parent 49a64cb3a1
commit 15e02be4e4
10 changed files with 35 additions and 23 deletions
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14
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-aes.h
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@ -62,10 +62,8 @@ STATIC mp_obj_t mod_trezorcrypto_AES_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 2, 3, false);
mp_obj_AES_t *o = m_new_obj_with_finaliser(mp_obj_AES_t);
o->base.type = type;
o->mode = mp_obj_get_int(args[0]);
if (o->mode < ECB || o->mode > CTR) {
mp_int_t mode = mp_obj_get_int(args[0]);
if (mode < ECB || mode > CTR) {
mp_raise_ValueError("Invalid AES mode");
}
mp_buffer_info_t key = {0};
@ -74,13 +72,19 @@ STATIC mp_obj_t mod_trezorcrypto_AES_make_new(const mp_obj_type_t *type,
mp_raise_ValueError(
"Invalid length of key (has to be 128, 192 or 256 bits)");
}
mp_buffer_info_t iv = {0};
if (n_args > 2) {
mp_buffer_info_t iv = {0};
mp_get_buffer_raise(args[2], &iv, MP_BUFFER_READ);
if (iv.len != AES_BLOCK_SIZE) {
mp_raise_ValueError(
"Invalid length of initialization vector (has to be 128 bits)");
}
}
mp_obj_AES_t *o = m_new_obj_with_finaliser(mp_obj_AES_t);
o->base.type = type;
o->mode = mode;
if (iv.len != 0) {
memcpy(o->iv, iv.buf, AES_BLOCK_SIZE);
} else {
memzero(o->iv, AES_BLOCK_SIZE);

1
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-blake2b.h
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@ -98,6 +98,7 @@ STATIC mp_obj_t mod_trezorcrypto_Blake2b_make_new(const mp_obj_type_t *type,
}
if (res < 0) {
m_del_obj(mp_obj_Blake2b_t, o);
mp_raise_ValueError("Invalid Blake2b parameters");
}

1
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-blake2s.h
View File

@ -98,6 +98,7 @@ STATIC mp_obj_t mod_trezorcrypto_Blake2s_make_new(const mp_obj_type_t *type,
}
if (res < 0) {
m_del_obj(mp_obj_Blake2s_t, o);
mp_raise_ValueError("Invalid Blake2s parameters");
}

1
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-cardano.h
View File

@ -113,6 +113,7 @@ STATIC mp_obj_t mod_trezorcrypto_from_secret(mp_obj_t secret) {
o->base.type = &mod_trezorcrypto_HDNode_type;
const int res = hdnode_from_secret_cardano(bufinfo.buf, &o->hdnode);
if (res != 1) {
m_del_obj(mp_obj_HDNode_t, o);
mp_raise_msg(&mp_type_RuntimeError,
"Unexpected failure in constructing Cardano node.");
}

6
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-chacha20poly1305.h
View File

@ -43,9 +43,6 @@ STATIC mp_obj_t mod_trezorcrypto_ChaCha20Poly1305_make_new(
const mp_obj_type_t *type, size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 2, 2, false);
mp_obj_ChaCha20Poly1305_t *o =
m_new_obj_with_finaliser(mp_obj_ChaCha20Poly1305_t);
o->base.type = type;
mp_buffer_info_t key = {0}, nonce = {0};
mp_get_buffer_raise(args[0], &key, MP_BUFFER_READ);
mp_get_buffer_raise(args[1], &nonce, MP_BUFFER_READ);
@ -55,7 +52,10 @@ STATIC mp_obj_t mod_trezorcrypto_ChaCha20Poly1305_make_new(
if (nonce.len != 12) {
mp_raise_ValueError("Invalid length of nonce");
}
mp_obj_ChaCha20Poly1305_t *o =
m_new_obj_with_finaliser(mp_obj_ChaCha20Poly1305_t);
rfc7539_init(&(o->ctx), key.buf, nonce.buf);
o->base.type = type;
o->alen = 0;
o->plen = 0;
return MP_OBJ_FROM_PTR(o);

5
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-hmac.h
View File

@ -57,8 +57,6 @@ STATIC mp_obj_t mod_trezorcrypto_Hmac_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 2, 3, false);
mp_obj_Hmac_t *o = m_new_obj_with_finaliser(mp_obj_Hmac_t);
o->base.type = type;
mp_buffer_info_t key = {0};
mp_get_buffer_raise(args[1], &key, MP_BUFFER_READ);
@ -67,12 +65,15 @@ STATIC mp_obj_t mod_trezorcrypto_Hmac_make_new(const mp_obj_type_t *type,
key.buf = "";
}
mp_obj_Hmac_t *o = m_new_obj_with_finaliser(mp_obj_Hmac_t);
o->base.type = type;
o->hashtype = trezor_obj_get_uint(args[0]);
if (o->hashtype == SHA256) {
hmac_sha256_Init(&(o->ctx256), key.buf, key.len);
} else if (o->hashtype == SHA512) {
hmac_sha512_Init(&(o->ctx512), key.buf, key.len);
} else {
m_del_obj(mp_obj_Hmac_t, o);
mp_raise_ValueError("Invalid hashtype");
}
// constructor called with message as third parameter

2
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-monero.h
View File

@ -160,6 +160,7 @@ STATIC mp_obj_t mod_trezorcrypto_monero_ge25519_make_new(
} else if (n_args == 1 && MP_OBJ_IS_STR_OR_BYTES(args[0])) {
mp_unpack_ge25519(&o->p, args[0], 0);
} else {
m_del_obj(mp_obj_ge25519_t, o);
mp_raise_ValueError("Invalid ge25519 constructor");
}
@ -202,6 +203,7 @@ STATIC mp_obj_t mod_trezorcrypto_monero_bignum256modm_make_new(
uint64_t v = trezor_obj_get_uint64(args[0]);
set256_modm(o->p, v);
} else {
m_del_obj(mp_obj_bignum256modm_t, o);
mp_raise_ValueError("Invalid scalar constructor");
}

8
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-pbkdf2.h
View File

@ -59,8 +59,6 @@ STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 3, 4, false);
mp_obj_Pbkdf2_t *o = m_new_obj_with_finaliser(mp_obj_Pbkdf2_t);
o->base.type = type;
mp_buffer_info_t password = {0};
mp_get_buffer_raise(args[1], &password, MP_BUFFER_READ);
@ -79,7 +77,10 @@ STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_make_new(const mp_obj_type_t *type,
blocknr = trezor_obj_get_uint(args[4]);
}
o->prf = trezor_obj_get_uint(args[0]);
mp_uint_t prf = trezor_obj_get_uint(args[0]);
mp_obj_Pbkdf2_t *o = m_new_obj_with_finaliser(mp_obj_Pbkdf2_t);
o->base.type = type;
o->prf = prf;
if (o->prf == PRF_HMAC_SHA256) {
pbkdf2_hmac_sha256_Init(&(o->ctx256), password.buf, password.len, salt.buf,
salt.len, blocknr);
@ -87,6 +88,7 @@ STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_make_new(const mp_obj_type_t *type,
pbkdf2_hmac_sha512_Init(&(o->ctx512), password.buf, password.len, salt.buf,
salt.len, blocknr);
} else {
m_del_obj(mp_obj_Pbkdf2_t, o);
mp_raise_ValueError("Invalid PRF");
}
// constructor called with iterations as fourth parameter

10
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-sha3-256.h
View File

@ -50,11 +50,6 @@ STATIC mp_obj_t mod_trezorcrypto_Sha3_256_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 1, true);
mp_obj_Sha3_256_t *o = m_new_obj_with_finaliser(mp_obj_Sha3_256_t);
o->base.type = type;
o->keccak = 0;
sha3_256_Init(&(o->ctx));
STATIC const mp_arg_t allowed_args[] = {
{MP_QSTR_data, MP_ARG_OBJ, {.u_obj = mp_const_none}},
{MP_QSTR_keccak, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = MP_OBJ_NULL}},
@ -62,6 +57,11 @@ STATIC mp_obj_t mod_trezorcrypto_Sha3_256_make_new(const mp_obj_type_t *type,
mp_arg_val_t vals[MP_ARRAY_SIZE(allowed_args)] = {0};
mp_arg_parse_all_kw_array(n_args, n_kw, args, MP_ARRAY_SIZE(allowed_args),
allowed_args, vals);
mp_obj_Sha3_256_t *o = m_new_obj_with_finaliser(mp_obj_Sha3_256_t);
o->base.type = type;
o->keccak = 0;
sha3_256_Init(&(o->ctx));
if (vals[1].u_obj != MP_OBJ_NULL) {
o->keccak = mp_obj_is_true(vals[1].u_obj);
}

10
core/embed/extmod/modtrezorcrypto/modtrezorcrypto-sha3-512.h
View File

@ -50,11 +50,6 @@ STATIC mp_obj_t mod_trezorcrypto_Sha3_512_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 1, true);
mp_obj_Sha3_512_t *o = m_new_obj_with_finaliser(mp_obj_Sha3_512_t);
o->base.type = type;
o->keccak = 0;
sha3_512_Init(&(o->ctx));
STATIC const mp_arg_t allowed_args[] = {
{MP_QSTR_data, MP_ARG_OBJ, {.u_obj = mp_const_none}},
{MP_QSTR_keccak, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = MP_OBJ_NULL}},
@ -62,6 +57,11 @@ STATIC mp_obj_t mod_trezorcrypto_Sha3_512_make_new(const mp_obj_type_t *type,
mp_arg_val_t vals[MP_ARRAY_SIZE(allowed_args)] = {0};
mp_arg_parse_all_kw_array(n_args, n_kw, args, MP_ARRAY_SIZE(allowed_args),
allowed_args, vals);
mp_obj_Sha3_512_t *o = m_new_obj_with_finaliser(mp_obj_Sha3_512_t);
o->base.type = type;
o->keccak = 0;
sha3_512_Init(&(o->ctx));
if (vals[1].u_obj != MP_OBJ_NULL) {
o->keccak = mp_obj_is_true(vals[1].u_obj);
}