From a04a7c41c9327144cc11ffd030c0efc2a4f85534 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 14 Jun 2024 18:17:58 +0200 Subject: Adding upstream version 3.3.6. Signed-off-by: Daniel Baumann --- src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.c | 819 +---------------------- 1 file changed, 10 insertions(+), 809 deletions(-) (limited to 'src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.c') diff --git a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.c b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.c index 0a3ecf6..9f61791 100644 --- a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.c +++ b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.c @@ -27,11 +27,7 @@ #include #include -#include "ngtcp2_str.h" -#include "ngtcp2_conv.h" -#include "ngtcp2_conn.h" #include "ngtcp2_net.h" -#include "ngtcp2_conversion.h" int ngtcp2_crypto_km_new(ngtcp2_crypto_km **pckm, const uint8_t *secret, size_t secretlen, @@ -85,6 +81,16 @@ void ngtcp2_crypto_km_del(ngtcp2_crypto_km *ckm, const ngtcp2_mem *mem) { return; } + if (ckm->secret.len) { +#ifdef WIN32 + SecureZeroMemory(ckm->secret.base, ckm->secret.len); +#elif defined(HAVE_EXPLICIT_BZERO) + explicit_bzero(ckm->secret.base, ckm->secret.len); +#elif defined(HAVE_MEMSET_S) + memset_s(ckm->secret.base, ckm->secret.len, 0, ckm->secret.len); +#endif /* HAVE_MEMSET_S */ + } + ngtcp2_mem_free(mem, ckm); } @@ -102,808 +108,3 @@ void ngtcp2_crypto_create_nonce(uint8_t *dest, const uint8_t *iv, size_t ivlen, dest[ivlen - 8 + i] ^= ((uint8_t *)&n)[i]; } } - -/* - * varint_paramlen returns the length of a single transport parameter - * which has variable integer in its parameter. - */ -static size_t varint_paramlen(ngtcp2_transport_param_id id, uint64_t param) { - size_t valuelen = ngtcp2_put_uvarintlen(param); - return ngtcp2_put_uvarintlen(id) + ngtcp2_put_uvarintlen(valuelen) + valuelen; -} - -/* - * write_varint_param writes parameter |id| of the given |value| in - * varint encoding. It returns p + the number of bytes written. - */ -static uint8_t *write_varint_param(uint8_t *p, ngtcp2_transport_param_id id, - uint64_t value) { - p = ngtcp2_put_uvarint(p, id); - p = ngtcp2_put_uvarint(p, ngtcp2_put_uvarintlen(value)); - return ngtcp2_put_uvarint(p, value); -} - -/* - * zero_paramlen returns the length of a single transport parameter - * which has zero length value in its parameter. - */ -static size_t zero_paramlen(ngtcp2_transport_param_id id) { - return ngtcp2_put_uvarintlen(id) + 1; -} - -/* - * write_zero_param writes parameter |id| that has zero length value. - * It returns p + the number of bytes written. - */ -static uint8_t *write_zero_param(uint8_t *p, ngtcp2_transport_param_id id) { - p = ngtcp2_put_uvarint(p, id); - *p++ = 0; - - return p; -} - -/* - * cid_paramlen returns the length of a single transport parameter - * which has |cid| as value. - */ -static size_t cid_paramlen(ngtcp2_transport_param_id id, - const ngtcp2_cid *cid) { - return ngtcp2_put_uvarintlen(id) + ngtcp2_put_uvarintlen(cid->datalen) + - cid->datalen; -} - -/* - * write_cid_param writes parameter |id| of the given |cid|. It - * returns p + the number of bytes written. - */ -static uint8_t *write_cid_param(uint8_t *p, ngtcp2_transport_param_id id, - const ngtcp2_cid *cid) { - assert(cid->datalen == 0 || cid->datalen >= NGTCP2_MIN_CIDLEN); - assert(cid->datalen <= NGTCP2_MAX_CIDLEN); - - p = ngtcp2_put_uvarint(p, id); - p = ngtcp2_put_uvarint(p, cid->datalen); - if (cid->datalen) { - p = ngtcp2_cpymem(p, cid->data, cid->datalen); - } - return p; -} - -static const uint8_t empty_address[16]; - -ngtcp2_ssize ngtcp2_transport_params_encode_versioned( - uint8_t *dest, size_t destlen, int transport_params_version, - const ngtcp2_transport_params *params) { - uint8_t *p; - size_t len = 0; - /* For some reason, gcc 7.3.0 requires this initialization. */ - size_t preferred_addrlen = 0; - size_t version_infolen = 0; - const ngtcp2_sockaddr_in *sa_in; - const ngtcp2_sockaddr_in6 *sa_in6; - ngtcp2_transport_params paramsbuf; - - params = ngtcp2_transport_params_convert_to_latest( - ¶msbuf, transport_params_version, params); - - if (params->original_dcid_present) { - len += - cid_paramlen(NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID, - ¶ms->original_dcid); - } - - if (params->stateless_reset_token_present) { - len += ngtcp2_put_uvarintlen(NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN) + - ngtcp2_put_uvarintlen(NGTCP2_STATELESS_RESET_TOKENLEN) + - NGTCP2_STATELESS_RESET_TOKENLEN; - } - - if (params->preferred_addr_present) { - assert(params->preferred_addr.cid.datalen >= NGTCP2_MIN_CIDLEN); - assert(params->preferred_addr.cid.datalen <= NGTCP2_MAX_CIDLEN); - preferred_addrlen = 4 /* ipv4Address */ + 2 /* ipv4Port */ + - 16 /* ipv6Address */ + 2 /* ipv6Port */ - + 1 + params->preferred_addr.cid.datalen /* CID */ + - NGTCP2_STATELESS_RESET_TOKENLEN; - len += ngtcp2_put_uvarintlen(NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS) + - ngtcp2_put_uvarintlen(preferred_addrlen) + preferred_addrlen; - } - if (params->retry_scid_present) { - len += cid_paramlen(NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID, - ¶ms->retry_scid); - } - - if (params->initial_scid_present) { - len += cid_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID, - ¶ms->initial_scid); - } - - if (params->initial_max_stream_data_bidi_local) { - len += varint_paramlen( - NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL, - params->initial_max_stream_data_bidi_local); - } - if (params->initial_max_stream_data_bidi_remote) { - len += varint_paramlen( - NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE, - params->initial_max_stream_data_bidi_remote); - } - if (params->initial_max_stream_data_uni) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI, - params->initial_max_stream_data_uni); - } - if (params->initial_max_data) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA, - params->initial_max_data); - } - if (params->initial_max_streams_bidi) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI, - params->initial_max_streams_bidi); - } - if (params->initial_max_streams_uni) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI, - params->initial_max_streams_uni); - } - if (params->max_udp_payload_size != - NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE, - params->max_udp_payload_size); - } - if (params->ack_delay_exponent != NGTCP2_DEFAULT_ACK_DELAY_EXPONENT) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT, - params->ack_delay_exponent); - } - if (params->disable_active_migration) { - len += zero_paramlen(NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION); - } - if (params->max_ack_delay != NGTCP2_DEFAULT_MAX_ACK_DELAY) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY, - params->max_ack_delay / NGTCP2_MILLISECONDS); - } - if (params->max_idle_timeout) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT, - params->max_idle_timeout / NGTCP2_MILLISECONDS); - } - if (params->active_connection_id_limit && - params->active_connection_id_limit != - NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT, - params->active_connection_id_limit); - } - if (params->max_datagram_frame_size) { - len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE, - params->max_datagram_frame_size); - } - if (params->grease_quic_bit) { - len += zero_paramlen(NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT); - } - if (params->version_info_present) { - version_infolen = - sizeof(uint32_t) + params->version_info.available_versionslen; - len += ngtcp2_put_uvarintlen(NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION) + - ngtcp2_put_uvarintlen(version_infolen) + version_infolen; - } - - if (dest == NULL && destlen == 0) { - return (ngtcp2_ssize)len; - } - - if (destlen < len) { - return NGTCP2_ERR_NOBUF; - } - - p = dest; - - if (params->original_dcid_present) { - p = write_cid_param( - p, NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID, - ¶ms->original_dcid); - } - - if (params->stateless_reset_token_present) { - p = ngtcp2_put_uvarint(p, NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN); - p = ngtcp2_put_uvarint(p, sizeof(params->stateless_reset_token)); - p = ngtcp2_cpymem(p, params->stateless_reset_token, - sizeof(params->stateless_reset_token)); - } - - if (params->preferred_addr_present) { - p = ngtcp2_put_uvarint(p, NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS); - p = ngtcp2_put_uvarint(p, preferred_addrlen); - - if (params->preferred_addr.ipv4_present) { - sa_in = ¶ms->preferred_addr.ipv4; - p = ngtcp2_cpymem(p, &sa_in->sin_addr, sizeof(sa_in->sin_addr)); - p = ngtcp2_put_uint16(p, sa_in->sin_port); - } else { - p = ngtcp2_cpymem(p, empty_address, sizeof(sa_in->sin_addr)); - p = ngtcp2_put_uint16(p, 0); - } - - if (params->preferred_addr.ipv6_present) { - sa_in6 = ¶ms->preferred_addr.ipv6; - p = ngtcp2_cpymem(p, &sa_in6->sin6_addr, sizeof(sa_in6->sin6_addr)); - p = ngtcp2_put_uint16(p, sa_in6->sin6_port); - } else { - p = ngtcp2_cpymem(p, empty_address, sizeof(sa_in6->sin6_addr)); - p = ngtcp2_put_uint16(p, 0); - } - - *p++ = (uint8_t)params->preferred_addr.cid.datalen; - if (params->preferred_addr.cid.datalen) { - p = ngtcp2_cpymem(p, params->preferred_addr.cid.data, - params->preferred_addr.cid.datalen); - } - p = ngtcp2_cpymem(p, params->preferred_addr.stateless_reset_token, - sizeof(params->preferred_addr.stateless_reset_token)); - } - - if (params->retry_scid_present) { - p = write_cid_param(p, NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID, - ¶ms->retry_scid); - } - - if (params->initial_scid_present) { - p = write_cid_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID, - ¶ms->initial_scid); - } - - if (params->initial_max_stream_data_bidi_local) { - p = write_varint_param( - p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL, - params->initial_max_stream_data_bidi_local); - } - - if (params->initial_max_stream_data_bidi_remote) { - p = write_varint_param( - p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE, - params->initial_max_stream_data_bidi_remote); - } - - if (params->initial_max_stream_data_uni) { - p = write_varint_param(p, - NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI, - params->initial_max_stream_data_uni); - } - - if (params->initial_max_data) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA, - params->initial_max_data); - } - - if (params->initial_max_streams_bidi) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI, - params->initial_max_streams_bidi); - } - - if (params->initial_max_streams_uni) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI, - params->initial_max_streams_uni); - } - - if (params->max_udp_payload_size != - NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE, - params->max_udp_payload_size); - } - - if (params->ack_delay_exponent != NGTCP2_DEFAULT_ACK_DELAY_EXPONENT) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT, - params->ack_delay_exponent); - } - - if (params->disable_active_migration) { - p = write_zero_param(p, NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION); - } - - if (params->max_ack_delay != NGTCP2_DEFAULT_MAX_ACK_DELAY) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY, - params->max_ack_delay / NGTCP2_MILLISECONDS); - } - - if (params->max_idle_timeout) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT, - params->max_idle_timeout / NGTCP2_MILLISECONDS); - } - - if (params->active_connection_id_limit && - params->active_connection_id_limit != - NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT, - params->active_connection_id_limit); - } - - if (params->max_datagram_frame_size) { - p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE, - params->max_datagram_frame_size); - } - - if (params->grease_quic_bit) { - p = write_zero_param(p, NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT); - } - - if (params->version_info_present) { - p = ngtcp2_put_uvarint(p, NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION); - p = ngtcp2_put_uvarint(p, version_infolen); - p = ngtcp2_put_uint32be(p, params->version_info.chosen_version); - if (params->version_info.available_versionslen) { - p = ngtcp2_cpymem(p, params->version_info.available_versions, - params->version_info.available_versionslen); - } - } - - assert((size_t)(p - dest) == len); - - return (ngtcp2_ssize)len; -} - -/* - * decode_varint decodes a single varint from the buffer pointed by - * |*pp| of length |end - *pp|. If it decodes an integer - * successfully, it stores the integer in |*pdest|, increment |*pp| by - * the number of bytes read from |*pp|, and returns 0. Otherwise it - * returns -1. - */ -static int decode_varint(uint64_t *pdest, const uint8_t **pp, - const uint8_t *end) { - const uint8_t *p = *pp; - size_t len; - - if (p == end) { - return -1; - } - - len = ngtcp2_get_uvarintlen(p); - if ((uint64_t)(end - p) < len) { - return -1; - } - - *pp = ngtcp2_get_uvarint(pdest, p); - - return 0; -} - -/* - * decode_varint_param decodes length prefixed value from the buffer - * pointed by |*pp| of length |end - *pp|. The length and value are - * encoded in varint form. If it decodes a value successfully, it - * stores the value in |*pdest|, increment |*pp| by the number of - * bytes read from |*pp|, and returns 0. Otherwise it returns -1. - */ -static int decode_varint_param(uint64_t *pdest, const uint8_t **pp, - const uint8_t *end) { - const uint8_t *p = *pp; - uint64_t valuelen; - - if (decode_varint(&valuelen, &p, end) != 0) { - return -1; - } - - if (p == end) { - return -1; - } - - if ((uint64_t)(end - p) < valuelen) { - return -1; - } - - if (ngtcp2_get_uvarintlen(p) != valuelen) { - return -1; - } - - *pp = ngtcp2_get_uvarint(pdest, p); - - return 0; -} - -/* - * decode_zero_param decodes zero length value from the buffer pointed - * by |*pp| of length |end - *pp|. The length is encoded in varint - * form. If it decodes zero length value successfully, it increments - * |*pp| by 1, and returns 0. Otherwise it returns -1. - */ -static int decode_zero_param(const uint8_t **pp, const uint8_t *end) { - if (*pp == end || **pp != 0) { - return -1; - } - - ++*pp; - - return 0; -} - -/* - * decode_cid_param decodes length prefixed ngtcp2_cid from the buffer - * pointed by |*pp| of length |end - *pp|. The length is encoded in - * varint form. If it decodes a value successfully, it stores the - * value in |*pdest|, increment |*pp| by the number of read from - * |*pp|, and returns the number of bytes read. Otherwise it returns - * the one of the negative error code: - * - * NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM - * Could not decode Connection ID. - */ -static int decode_cid_param(ngtcp2_cid *pdest, const uint8_t **pp, - const uint8_t *end) { - const uint8_t *p = *pp; - uint64_t valuelen; - - if (decode_varint(&valuelen, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - - if ((valuelen != 0 && valuelen < NGTCP2_MIN_CIDLEN) || - valuelen > NGTCP2_MAX_CIDLEN || (size_t)(end - p) < valuelen) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - - ngtcp2_cid_init(pdest, p, (size_t)valuelen); - - p += valuelen; - - *pp = p; - - return 0; -} - -int ngtcp2_transport_params_decode_versioned(int transport_params_version, - ngtcp2_transport_params *dest, - const uint8_t *data, - size_t datalen) { - const uint8_t *p, *end, *lend; - size_t len; - uint64_t param_type; - uint64_t valuelen; - int rv; - ngtcp2_sockaddr_in *sa_in; - ngtcp2_sockaddr_in6 *sa_in6; - uint32_t version; - ngtcp2_transport_params *params, paramsbuf; - - if (transport_params_version == NGTCP2_TRANSPORT_PARAMS_VERSION) { - params = dest; - } else { - params = ¶msbuf; - } - - /* Set default values */ - memset(params, 0, sizeof(*params)); - params->original_dcid_present = 0; - params->initial_scid_present = 0; - params->initial_max_streams_bidi = 0; - params->initial_max_streams_uni = 0; - params->initial_max_stream_data_bidi_local = 0; - params->initial_max_stream_data_bidi_remote = 0; - params->initial_max_stream_data_uni = 0; - params->max_udp_payload_size = NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE; - params->ack_delay_exponent = NGTCP2_DEFAULT_ACK_DELAY_EXPONENT; - params->stateless_reset_token_present = 0; - params->preferred_addr_present = 0; - params->disable_active_migration = 0; - params->max_ack_delay = NGTCP2_DEFAULT_MAX_ACK_DELAY; - params->max_idle_timeout = 0; - params->active_connection_id_limit = - NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT; - params->retry_scid_present = 0; - params->max_datagram_frame_size = 0; - memset(¶ms->retry_scid, 0, sizeof(params->retry_scid)); - memset(¶ms->initial_scid, 0, sizeof(params->initial_scid)); - memset(¶ms->original_dcid, 0, sizeof(params->original_dcid)); - params->version_info_present = 0; - - p = data; - end = data + datalen; - - for (; (size_t)(end - p) >= 2;) { - if (decode_varint(¶m_type, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - - switch (param_type) { - case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL: - if (decode_varint_param(¶ms->initial_max_stream_data_bidi_local, &p, - end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE: - if (decode_varint_param(¶ms->initial_max_stream_data_bidi_remote, &p, - end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI: - if (decode_varint_param(¶ms->initial_max_stream_data_uni, &p, end) != - 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA: - if (decode_varint_param(¶ms->initial_max_data, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI: - if (decode_varint_param(¶ms->initial_max_streams_bidi, &p, end) != - 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (params->initial_max_streams_bidi > NGTCP2_MAX_STREAMS) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI: - if (decode_varint_param(¶ms->initial_max_streams_uni, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (params->initial_max_streams_uni > NGTCP2_MAX_STREAMS) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT: - if (decode_varint_param(¶ms->max_idle_timeout, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - params->max_idle_timeout *= NGTCP2_MILLISECONDS; - break; - case NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE: - if (decode_varint_param(¶ms->max_udp_payload_size, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN: - if (decode_varint(&valuelen, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if ((size_t)valuelen != sizeof(params->stateless_reset_token)) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if ((size_t)(end - p) < sizeof(params->stateless_reset_token)) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - - p = ngtcp2_get_bytes(params->stateless_reset_token, p, - sizeof(params->stateless_reset_token)); - params->stateless_reset_token_present = 1; - - break; - case NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT: - if (decode_varint_param(¶ms->ack_delay_exponent, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (params->ack_delay_exponent > 20) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS: - if (decode_varint(&valuelen, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if ((size_t)(end - p) < valuelen) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - len = 4 /* ipv4Address */ + 2 /* ipv4Port */ + 16 /* ipv6Address */ + - 2 /* ipv6Port */ - + 1 /* cid length */ + NGTCP2_STATELESS_RESET_TOKENLEN; - if (valuelen < len) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - - sa_in = ¶ms->preferred_addr.ipv4; - - p = ngtcp2_get_bytes(&sa_in->sin_addr, p, sizeof(sa_in->sin_addr)); - p = ngtcp2_get_uint16be(&sa_in->sin_port, p); - - if (sa_in->sin_port || memcmp(empty_address, &sa_in->sin_addr, - sizeof(sa_in->sin_addr)) != 0) { - sa_in->sin_family = NGTCP2_AF_INET; - params->preferred_addr.ipv4_present = 1; - } - - sa_in6 = ¶ms->preferred_addr.ipv6; - - p = ngtcp2_get_bytes(&sa_in6->sin6_addr, p, sizeof(sa_in6->sin6_addr)); - p = ngtcp2_get_uint16be(&sa_in6->sin6_port, p); - - if (sa_in6->sin6_port || memcmp(empty_address, &sa_in6->sin6_addr, - sizeof(sa_in6->sin6_addr)) != 0) { - sa_in6->sin6_family = NGTCP2_AF_INET6; - params->preferred_addr.ipv6_present = 1; - } - - /* cid */ - params->preferred_addr.cid.datalen = *p++; - len += params->preferred_addr.cid.datalen; - if (valuelen != len || - params->preferred_addr.cid.datalen > NGTCP2_MAX_CIDLEN || - params->preferred_addr.cid.datalen < NGTCP2_MIN_CIDLEN) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (params->preferred_addr.cid.datalen) { - p = ngtcp2_get_bytes(params->preferred_addr.cid.data, p, - params->preferred_addr.cid.datalen); - } - - /* stateless reset token */ - p = ngtcp2_get_bytes( - params->preferred_addr.stateless_reset_token, p, - sizeof(params->preferred_addr.stateless_reset_token)); - params->preferred_addr_present = 1; - break; - case NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION: - if (decode_zero_param(&p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - params->disable_active_migration = 1; - break; - case NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID: - rv = decode_cid_param(¶ms->original_dcid, &p, end); - if (rv != 0) { - return rv; - } - params->original_dcid_present = 1; - break; - case NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID: - rv = decode_cid_param(¶ms->retry_scid, &p, end); - if (rv != 0) { - return rv; - } - params->retry_scid_present = 1; - break; - case NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID: - rv = decode_cid_param(¶ms->initial_scid, &p, end); - if (rv != 0) { - return rv; - } - params->initial_scid_present = 1; - break; - case NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY: - if (decode_varint_param(¶ms->max_ack_delay, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (params->max_ack_delay >= 16384) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - params->max_ack_delay *= NGTCP2_MILLISECONDS; - break; - case NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT: - if (decode_varint_param(¶ms->active_connection_id_limit, &p, end) != - 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE: - if (decode_varint_param(¶ms->max_datagram_frame_size, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - break; - case NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT: - if (decode_zero_param(&p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - params->grease_quic_bit = 1; - break; - case NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION: - if (decode_varint(&valuelen, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if ((size_t)(end - p) < valuelen) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (valuelen < sizeof(uint32_t) || (valuelen & 0x3)) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - p = ngtcp2_get_uint32(¶ms->version_info.chosen_version, p); - if (params->version_info.chosen_version == 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if (valuelen > sizeof(uint32_t)) { - params->version_info.available_versions = (uint8_t *)p; - params->version_info.available_versionslen = - (size_t)valuelen - sizeof(uint32_t); - - for (lend = p + (valuelen - sizeof(uint32_t)); p != lend;) { - p = ngtcp2_get_uint32(&version, p); - if (version == 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - } - } - params->version_info_present = 1; - break; - default: - /* Ignore unknown parameter */ - if (decode_varint(&valuelen, &p, end) != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - if ((size_t)(end - p) < valuelen) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - p += valuelen; - break; - } - } - - if (end - p != 0) { - return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; - } - - if (transport_params_version != NGTCP2_TRANSPORT_PARAMS_VERSION) { - ngtcp2_transport_params_convert_to_old(transport_params_version, dest, - params); - } - - return 0; -} - -static int transport_params_copy_new(ngtcp2_transport_params **pdest, - const ngtcp2_transport_params *src, - const ngtcp2_mem *mem) { - size_t len = sizeof(**pdest); - ngtcp2_transport_params *dest; - uint8_t *p; - - if (src->version_info_present) { - len += src->version_info.available_versionslen; - } - - dest = ngtcp2_mem_malloc(mem, len); - if (dest == NULL) { - return NGTCP2_ERR_NOMEM; - } - - *dest = *src; - - if (src->version_info_present && src->version_info.available_versionslen) { - p = (uint8_t *)dest + sizeof(*dest); - memcpy(p, src->version_info.available_versions, - src->version_info.available_versionslen); - dest->version_info.available_versions = p; - } - - *pdest = dest; - - return 0; -} - -int ngtcp2_transport_params_decode_new(ngtcp2_transport_params **pparams, - const uint8_t *data, size_t datalen, - const ngtcp2_mem *mem) { - int rv; - ngtcp2_transport_params params; - - rv = ngtcp2_transport_params_decode(¶ms, data, datalen); - if (rv < 0) { - return rv; - } - - if (mem == NULL) { - mem = ngtcp2_mem_default(); - } - - return transport_params_copy_new(pparams, ¶ms, mem); -} - -void ngtcp2_transport_params_del(ngtcp2_transport_params *params, - const ngtcp2_mem *mem) { - if (params == NULL) { - return; - } - - if (mem == NULL) { - mem = ngtcp2_mem_default(); - } - - ngtcp2_mem_free(mem, params); -} - -int ngtcp2_transport_params_copy_new(ngtcp2_transport_params **pdest, - const ngtcp2_transport_params *src, - const ngtcp2_mem *mem) { - if (src == NULL) { - *pdest = NULL; - return 0; - } - - return transport_params_copy_new(pdest, src, mem); -} -- cgit v1.2.3