diff options
Diffstat (limited to 'src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_qlog.c')
| -rw-r--r-- | src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_qlog.c | 1218 |
1 files changed, 1218 insertions, 0 deletions
diff --git a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_qlog.c b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_qlog.c new file mode 100644 index 0000000..5107f44 --- /dev/null +++ b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_qlog.c @@ -0,0 +1,1218 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_qlog.h" + +#include <assert.h> + +#include "ngtcp2_str.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_conv.h" +#include "ngtcp2_net.h" +#include "ngtcp2_unreachable.h" + +void ngtcp2_qlog_init(ngtcp2_qlog *qlog, ngtcp2_qlog_write write, + ngtcp2_tstamp ts, void *user_data) { + qlog->write = write; + qlog->ts = qlog->last_ts = ts; + qlog->user_data = user_data; +} + +#define write_verbatim(DEST, S) ngtcp2_cpymem((DEST), (S), sizeof(S) - 1) + +static uint8_t *write_string_impl(uint8_t *p, const uint8_t *data, + size_t datalen) { + *p++ = '"'; + if (datalen) { + p = ngtcp2_cpymem(p, data, datalen); + } + *p++ = '"'; + return p; +} + +#define write_string(DEST, S) \ + write_string_impl((DEST), (const uint8_t *)(S), sizeof(S) - 1) + +#define NGTCP2_LOWER_XDIGITS "0123456789abcdef" + +static uint8_t *write_hex(uint8_t *p, const uint8_t *data, size_t datalen) { + const uint8_t *b = data, *end = data + datalen; + *p++ = '"'; + for (; b != end; ++b) { + *p++ = (uint8_t)NGTCP2_LOWER_XDIGITS[*b >> 4]; + *p++ = (uint8_t)NGTCP2_LOWER_XDIGITS[*b & 0xf]; + } + *p++ = '"'; + return p; +} + +static uint8_t *write_cid(uint8_t *p, const ngtcp2_cid *cid) { + return write_hex(p, cid->data, cid->datalen); +} + +static uint8_t *write_number(uint8_t *p, uint64_t n) { + size_t nlen = 0; + uint64_t t; + uint8_t *res; + + if (n == 0) { + *p++ = '0'; + return p; + } + for (t = n; t; t /= 10, ++nlen) + ; + p += nlen; + res = p; + for (; n; n /= 10) { + *--p = (uint8_t)((n % 10) + '0'); + } + return res; +} + +static uint8_t *write_tstamp(uint8_t *p, ngtcp2_tstamp ts) { + return write_number(p, ts / NGTCP2_MILLISECONDS); +} + +static uint8_t *write_duration(uint8_t *p, ngtcp2_duration duration) { + return write_number(p, duration / NGTCP2_MILLISECONDS); +} + +static uint8_t *write_bool(uint8_t *p, int b) { + if (b) { + return ngtcp2_cpymem(p, "true", sizeof("true") - 1); + } + return ngtcp2_cpymem(p, "false", sizeof("false") - 1); +} + +static uint8_t *write_pair_impl(uint8_t *p, const uint8_t *name, size_t namelen, + const ngtcp2_vec *value) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_string_impl(p, value->base, value->len); +} + +#define write_pair(DEST, NAME, VALUE) \ + write_pair_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, (VALUE)) + +static uint8_t *write_pair_hex_impl(uint8_t *p, const uint8_t *name, + size_t namelen, const uint8_t *value, + size_t valuelen) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_hex(p, value, valuelen); +} + +#define write_pair_hex(DEST, NAME, VALUE, VALUELEN) \ + write_pair_hex_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE), (VALUELEN)) + +static uint8_t *write_pair_number_impl(uint8_t *p, const uint8_t *name, + size_t namelen, uint64_t value) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_number(p, value); +} + +#define write_pair_number(DEST, NAME, VALUE) \ + write_pair_number_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_duration_impl(uint8_t *p, const uint8_t *name, + size_t namelen, + ngtcp2_duration duration) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_duration(p, duration); +} + +#define write_pair_duration(DEST, NAME, VALUE) \ + write_pair_duration_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_tstamp_impl(uint8_t *p, const uint8_t *name, + size_t namelen, ngtcp2_tstamp ts) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_tstamp(p, ts); +} + +#define write_pair_tstamp(DEST, NAME, VALUE) \ + write_pair_tstamp_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_bool_impl(uint8_t *p, const uint8_t *name, + size_t namelen, int b) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_bool(p, b); +} + +#define write_pair_bool(DEST, NAME, VALUE) \ + write_pair_bool_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_cid_impl(uint8_t *p, const uint8_t *name, + size_t namelen, const ngtcp2_cid *cid) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_cid(p, cid); +} + +#define write_pair_cid(DEST, NAME, VALUE) \ + write_pair_cid_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +#define ngtcp2_make_vec_lit(S) \ + { (uint8_t *)(S), sizeof((S)) - 1 } + +static uint8_t *write_common_fields(uint8_t *p, const ngtcp2_cid *odcid) { + p = write_verbatim( + p, "\"common_fields\":{\"protocol_type\":[\"QUIC\"],\"time_format\":" + "\"relative\",\"reference_time\":0,\"group_id\":"); + p = write_cid(p, odcid); + *p++ = '}'; + return p; +} + +static uint8_t *write_trace(uint8_t *p, int server, const ngtcp2_cid *odcid) { + p = write_verbatim( + p, "\"trace\":{\"vantage_point\":{\"name\":\"ngtcp2\",\"type\":"); + if (server) { + p = write_string(p, "server"); + } else { + p = write_string(p, "client"); + } + p = write_verbatim(p, "},"); + p = write_common_fields(p, odcid); + *p++ = '}'; + return p; +} + +void ngtcp2_qlog_start(ngtcp2_qlog *qlog, const ngtcp2_cid *odcid, int server) { + uint8_t buf[1024]; + uint8_t *p = buf; + + if (!qlog->write) { + return; + } + + p = write_verbatim( + p, "\x1e{\"qlog_format\":\"JSON-SEQ\",\"qlog_version\":\"0.3\","); + p = write_trace(p, server, odcid); + p = write_verbatim(p, "}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_end(ngtcp2_qlog *qlog) { + uint8_t buf[1] = {0}; + + if (!qlog->write) { + return; + } + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_FIN, &buf, 0); +} + +static ngtcp2_vec vec_pkt_type_initial = ngtcp2_make_vec_lit("initial"); +static ngtcp2_vec vec_pkt_type_handshake = ngtcp2_make_vec_lit("handshake"); +static ngtcp2_vec vec_pkt_type_0rtt = ngtcp2_make_vec_lit("0RTT"); +static ngtcp2_vec vec_pkt_type_1rtt = ngtcp2_make_vec_lit("1RTT"); +static ngtcp2_vec vec_pkt_type_retry = ngtcp2_make_vec_lit("retry"); +static ngtcp2_vec vec_pkt_type_version_negotiation = + ngtcp2_make_vec_lit("version_negotiation"); +static ngtcp2_vec vec_pkt_type_stateless_reset = + ngtcp2_make_vec_lit("stateless_reset"); +static ngtcp2_vec vec_pkt_type_unknown = ngtcp2_make_vec_lit("unknown"); + +static const ngtcp2_vec *qlog_pkt_type(const ngtcp2_pkt_hd *hd) { + if (hd->flags & NGTCP2_PKT_FLAG_LONG_FORM) { + switch (hd->type) { + case NGTCP2_PKT_INITIAL: + return &vec_pkt_type_initial; + case NGTCP2_PKT_HANDSHAKE: + return &vec_pkt_type_handshake; + case NGTCP2_PKT_0RTT: + return &vec_pkt_type_0rtt; + case NGTCP2_PKT_RETRY: + return &vec_pkt_type_retry; + default: + return &vec_pkt_type_unknown; + } + } + + switch (hd->type) { + case NGTCP2_PKT_VERSION_NEGOTIATION: + return &vec_pkt_type_version_negotiation; + case NGTCP2_PKT_STATELESS_RESET: + return &vec_pkt_type_stateless_reset; + case NGTCP2_PKT_1RTT: + return &vec_pkt_type_1rtt; + default: + return &vec_pkt_type_unknown; + } +} + +static uint8_t *write_pkt_hd(uint8_t *p, const ngtcp2_pkt_hd *hd) { + /* + * {"packet_type":"version_negotiation","packet_number":"0000000000000000000","token":{"data":""}} + */ +#define NGTCP2_QLOG_PKT_HD_OVERHEAD 95 + + *p++ = '{'; + p = write_pair(p, "packet_type", qlog_pkt_type(hd)); + *p++ = ','; + p = write_pair_number(p, "packet_number", (uint64_t)hd->pkt_num); + if (hd->type == NGTCP2_PKT_INITIAL && hd->tokenlen) { + p = write_verbatim(p, ",\"token\":{"); + p = write_pair_hex(p, "data", hd->token, hd->tokenlen); + *p++ = '}'; + } + /* TODO Write DCIL and DCID */ + /* TODO Write SCIL and SCID */ + *p++ = '}'; + return p; +} + +static uint8_t *write_padding_frame(uint8_t *p, const ngtcp2_padding *fr) { + (void)fr; + + /* {"frame_type":"padding"} */ +#define NGTCP2_QLOG_PADDING_FRAME_OVERHEAD 24 + + return write_verbatim(p, "{\"frame_type\":\"padding\"}"); +} + +static uint8_t *write_ping_frame(uint8_t *p, const ngtcp2_ping *fr) { + (void)fr; + + /* {"frame_type":"ping"} */ +#define NGTCP2_QLOG_PING_FRAME_OVERHEAD 21 + + return write_verbatim(p, "{\"frame_type\":\"ping\"}"); +} + +static uint8_t *write_ack_frame(uint8_t *p, const ngtcp2_ack *fr) { + int64_t largest_ack, min_ack; + size_t i; + const ngtcp2_ack_range *range; + + /* + * {"frame_type":"ack","ack_delay":0000000000000000000,"acked_ranges":[]} + * + * each range: + * [0000000000000000000,0000000000000000000], + * + * ecn: + * ,"ect1":0000000000000000000,"ect0":0000000000000000000,"ce":0000000000000000000 + */ +#define NGTCP2_QLOG_ACK_FRAME_BASE_OVERHEAD 70 +#define NGTCP2_QLOG_ACK_FRAME_RANGE_OVERHEAD 42 +#define NGTCP2_QLOG_ACK_FRAME_ECN_OVERHEAD 79 + + p = write_verbatim(p, "{\"frame_type\":\"ack\","); + p = write_pair_duration(p, "ack_delay", fr->ack_delay_unscaled); + p = write_verbatim(p, ",\"acked_ranges\":["); + + largest_ack = fr->largest_ack; + min_ack = fr->largest_ack - (int64_t)fr->first_ack_range; + + *p++ = '['; + p = write_number(p, (uint64_t)min_ack); + if (largest_ack != min_ack) { + *p++ = ','; + p = write_number(p, (uint64_t)largest_ack); + } + *p++ = ']'; + + for (i = 0; i < fr->rangecnt; ++i) { + range = &fr->ranges[i]; + largest_ack = min_ack - (int64_t)range->gap - 2; + min_ack = largest_ack - (int64_t)range->len; + *p++ = ','; + *p++ = '['; + p = write_number(p, (uint64_t)min_ack); + if (largest_ack != min_ack) { + *p++ = ','; + p = write_number(p, (uint64_t)largest_ack); + } + *p++ = ']'; + } + + *p++ = ']'; + + if (fr->type == NGTCP2_FRAME_ACK_ECN) { + *p++ = ','; + p = write_pair_number(p, "ect1", fr->ecn.ect1); + *p++ = ','; + p = write_pair_number(p, "ect0", fr->ecn.ect0); + *p++ = ','; + p = write_pair_number(p, "ce", fr->ecn.ce); + } + + *p++ = '}'; + + return p; +} + +static uint8_t *write_reset_stream_frame(uint8_t *p, + const ngtcp2_reset_stream *fr) { + /* + * {"frame_type":"reset_stream","stream_id":0000000000000000000,"error_code":0000000000000000000,"final_size":0000000000000000000} + */ +#define NGTCP2_QLOG_RESET_STREAM_FRAME_OVERHEAD 127 + + p = write_verbatim(p, "{\"frame_type\":\"reset_stream\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "error_code", fr->app_error_code); + *p++ = ','; + p = write_pair_number(p, "final_size", fr->final_size); + *p++ = '}'; + + return p; +} + +static uint8_t *write_stop_sending_frame(uint8_t *p, + const ngtcp2_stop_sending *fr) { + /* + * {"frame_type":"stop_sending","stream_id":0000000000000000000,"error_code":0000000000000000000} + */ +#define NGTCP2_QLOG_STOP_SENDING_FRAME_OVERHEAD 94 + + p = write_verbatim(p, "{\"frame_type\":\"stop_sending\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "error_code", fr->app_error_code); + *p++ = '}'; + + return p; +} + +static uint8_t *write_crypto_frame(uint8_t *p, const ngtcp2_crypto *fr) { + /* + * {"frame_type":"crypto","offset":0000000000000000000,"length":0000000000000000000} + */ +#define NGTCP2_QLOG_CRYPTO_FRAME_OVERHEAD 81 + + p = write_verbatim(p, "{\"frame_type\":\"crypto\","); + p = write_pair_number(p, "offset", fr->offset); + *p++ = ','; + p = write_pair_number(p, "length", ngtcp2_vec_len(fr->data, fr->datacnt)); + *p++ = '}'; + + return p; +} + +static uint8_t *write_new_token_frame(uint8_t *p, const ngtcp2_new_token *fr) { + /* + * {"frame_type":"new_token","length":0000000000000000000,"token":{"data":""}} + */ +#define NGTCP2_QLOG_NEW_TOKEN_FRAME_OVERHEAD 75 + + p = write_verbatim(p, "{\"frame_type\":\"new_token\","); + p = write_pair_number(p, "length", fr->tokenlen); + p = write_verbatim(p, ",\"token\":{"); + p = write_pair_hex(p, "data", fr->token, fr->tokenlen); + *p++ = '}'; + *p++ = '}'; + + return p; +} + +static uint8_t *write_stream_frame(uint8_t *p, const ngtcp2_stream *fr) { + /* + * {"frame_type":"stream","stream_id":0000000000000000000,"offset":0000000000000000000,"length":0000000000000000000,"fin":true} + */ +#define NGTCP2_QLOG_STREAM_FRAME_OVERHEAD 124 + + p = write_verbatim(p, "{\"frame_type\":\"stream\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "offset", fr->offset); + *p++ = ','; + p = write_pair_number(p, "length", ngtcp2_vec_len(fr->data, fr->datacnt)); + if (fr->fin) { + *p++ = ','; + p = write_pair_bool(p, "fin", 1); + } + *p++ = '}'; + + return p; +} + +static uint8_t *write_max_data_frame(uint8_t *p, const ngtcp2_max_data *fr) { + /* + * {"frame_type":"max_data","maximum":0000000000000000000} + */ +#define NGTCP2_QLOG_MAX_DATA_FRAME_OVERHEAD 55 + + p = write_verbatim(p, "{\"frame_type\":\"max_data\","); + p = write_pair_number(p, "maximum", fr->max_data); + *p++ = '}'; + + return p; +} + +static uint8_t *write_max_stream_data_frame(uint8_t *p, + const ngtcp2_max_stream_data *fr) { + /* + * {"frame_type":"max_stream_data","stream_id":0000000000000000000,"maximum":0000000000000000000} + */ +#define NGTCP2_QLOG_MAX_STREAM_DATA_FRAME_OVERHEAD 94 + + p = write_verbatim(p, "{\"frame_type\":\"max_stream_data\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "maximum", fr->max_stream_data); + *p++ = '}'; + + return p; +} + +static uint8_t *write_max_streams_frame(uint8_t *p, + const ngtcp2_max_streams *fr) { + /* + * {"frame_type":"max_streams","stream_type":"unidirectional","maximum":0000000000000000000} + */ +#define NGTCP2_QLOG_MAX_STREAMS_FRAME_OVERHEAD 89 + + p = write_verbatim(p, "{\"frame_type\":\"max_streams\",\"stream_type\":"); + if (fr->type == NGTCP2_FRAME_MAX_STREAMS_BIDI) { + p = write_string(p, "bidirectional"); + } else { + p = write_string(p, "unidirectional"); + } + *p++ = ','; + p = write_pair_number(p, "maximum", fr->max_streams); + *p++ = '}'; + + return p; +} + +static uint8_t *write_data_blocked_frame(uint8_t *p, + const ngtcp2_data_blocked *fr) { + (void)fr; + + /* + * {"frame_type":"data_blocked"} + */ +#define NGTCP2_QLOG_DATA_BLOCKED_FRAME_OVERHEAD 29 + + /* TODO log limit */ + + return write_verbatim(p, "{\"frame_type\":\"data_blocked\"}"); +} + +static uint8_t * +write_stream_data_blocked_frame(uint8_t *p, + const ngtcp2_stream_data_blocked *fr) { + (void)fr; + + /* + * {"frame_type":"stream_data_blocked"} + */ +#define NGTCP2_QLOG_STREAM_DATA_BLOCKED_FRAME_OVERHEAD 36 + + /* TODO log limit */ + + return write_verbatim(p, "{\"frame_type\":\"stream_data_blocked\"}"); +} + +static uint8_t *write_streams_blocked_frame(uint8_t *p, + const ngtcp2_streams_blocked *fr) { + (void)fr; + + /* + * {"frame_type":"streams_blocked"} + */ +#define NGTCP2_QLOG_STREAMS_BLOCKED_FRAME_OVERHEAD 32 + + /* TODO Log stream_type and limit */ + + return write_verbatim(p, "{\"frame_type\":\"streams_blocked\"}"); +} + +static uint8_t * +write_new_connection_id_frame(uint8_t *p, const ngtcp2_new_connection_id *fr) { + /* + * {"frame_type":"new_connection_id","sequence_number":0000000000000000000,"retire_prior_to":0000000000000000000,"connection_id_length":0000000000000000000,"connection_id":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx","stateless_reset_token":{"data":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"}} + */ +#define NGTCP2_QLOG_NEW_CONNECTION_ID_FRAME_OVERHEAD 280 + + p = write_verbatim(p, "{\"frame_type\":\"new_connection_id\","); + p = write_pair_number(p, "sequence_number", fr->seq); + *p++ = ','; + p = write_pair_number(p, "retire_prior_to", fr->retire_prior_to); + *p++ = ','; + p = write_pair_number(p, "connection_id_length", fr->cid.datalen); + *p++ = ','; + p = write_pair_cid(p, "connection_id", &fr->cid); + p = write_verbatim(p, ",\"stateless_reset_token\":{"); + p = write_pair_hex(p, "data", fr->stateless_reset_token, + sizeof(fr->stateless_reset_token)); + *p++ = '}'; + *p++ = '}'; + + return p; +} + +static uint8_t * +write_retire_connection_id_frame(uint8_t *p, + const ngtcp2_retire_connection_id *fr) { + /* + * {"frame_type":"retire_connection_id","sequence_number":0000000000000000000} + */ +#define NGTCP2_QLOG_RETIRE_CONNECTION_ID_FRAME_OVERHEAD 75 + + p = write_verbatim(p, "{\"frame_type\":\"retire_connection_id\","); + p = write_pair_number(p, "sequence_number", fr->seq); + *p++ = '}'; + + return p; +} + +static uint8_t *write_path_challenge_frame(uint8_t *p, + const ngtcp2_path_challenge *fr) { + /* + * {"frame_type":"path_challenge","data":"xxxxxxxxxxxxxxxx"} + */ +#define NGTCP2_QLOG_PATH_CHALLENGE_FRAME_OVERHEAD 57 + + p = write_verbatim(p, "{\"frame_type\":\"path_challenge\","); + p = write_pair_hex(p, "data", fr->data, sizeof(fr->data)); + *p++ = '}'; + + return p; +} + +static uint8_t *write_path_response_frame(uint8_t *p, + const ngtcp2_path_response *fr) { + /* + * {"frame_type":"path_response","data":"xxxxxxxxxxxxxxxx"} + */ +#define NGTCP2_QLOG_PATH_RESPONSE_FRAME_OVERHEAD 56 + + p = write_verbatim(p, "{\"frame_type\":\"path_response\","); + p = write_pair_hex(p, "data", fr->data, sizeof(fr->data)); + *p++ = '}'; + + return p; +} + +static uint8_t * +write_connection_close_frame(uint8_t *p, const ngtcp2_connection_close *fr) { + /* + * {"frame_type":"connection_close","error_space":"application","error_code":0000000000000000000,"raw_error_code":0000000000000000000} + */ +#define NGTCP2_QLOG_CONNECTION_CLOSE_FRAME_OVERHEAD 131 + + p = write_verbatim(p, + "{\"frame_type\":\"connection_close\",\"error_space\":"); + if (fr->type == NGTCP2_FRAME_CONNECTION_CLOSE) { + p = write_string(p, "transport"); + } else { + p = write_string(p, "application"); + } + *p++ = ','; + p = write_pair_number(p, "error_code", fr->error_code); + *p++ = ','; + p = write_pair_number(p, "raw_error_code", fr->error_code); + /* TODO Write reason by escaping non-printables */ + /* TODO Write trigger_frame_type */ + *p++ = '}'; + + return p; +} + +static uint8_t *write_handshake_done_frame(uint8_t *p, + const ngtcp2_handshake_done *fr) { + (void)fr; + + /* + * {"frame_type":"handshake_done"} + */ +#define NGTCP2_QLOG_HANDSHAKE_DONE_FRAME_OVERHEAD 31 + + return write_verbatim(p, "{\"frame_type\":\"handshake_done\"}"); +} + +static uint8_t *write_datagram_frame(uint8_t *p, const ngtcp2_datagram *fr) { + /* + * {"frame_type":"datagram","length":0000000000000000000} + */ +#define NGTCP2_QLOG_DATAGRAM_FRAME_OVERHEAD 54 + + p = write_verbatim(p, "{\"frame_type\":\"datagram\","); + p = write_pair_number(p, "length", ngtcp2_vec_len(fr->data, fr->datacnt)); + *p++ = '}'; + + return p; +} + +static uint8_t *qlog_write_time(ngtcp2_qlog *qlog, uint8_t *p) { + return write_pair_tstamp(p, "time", qlog->last_ts - qlog->ts); +} + +static void qlog_pkt_write_start(ngtcp2_qlog *qlog, int sent) { + uint8_t *p; + + if (!qlog->write) { + return; + } + + ngtcp2_buf_reset(&qlog->buf); + p = qlog->buf.last; + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim(p, ",\"name\":"); + if (sent) { + p = write_string(p, "transport:packet_sent"); + } else { + p = write_string(p, "transport:packet_received"); + } + p = write_verbatim(p, ",\"data\":{\"frames\":["); + qlog->buf.last = p; +} + +static void qlog_pkt_write_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen) { + uint8_t *p = qlog->buf.last; + + if (!qlog->write) { + return; + } + + /* + * ],"header":,"raw":{"length":0000000000000000000}}} + * + * plus, terminating LF + */ +#define NGTCP2_QLOG_PKT_WRITE_END_OVERHEAD \ + (1 + 50 + NGTCP2_QLOG_PKT_HD_OVERHEAD) + + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_PKT_WRITE_END_OVERHEAD + hd->tokenlen * 2) { + return; + } + + assert(ngtcp2_buf_len(&qlog->buf)); + + /* Eat last ',' */ + if (*(p - 1) == ',') { + --p; + } + + p = write_verbatim(p, "],\"header\":"); + p = write_pkt_hd(p, hd); + p = write_verbatim(p, ",\"raw\":{\"length\":"); + p = write_number(p, pktlen); + p = write_verbatim(p, "}}}\n"); + + qlog->buf.last = p; + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, qlog->buf.pos, + ngtcp2_buf_len(&qlog->buf)); +} + +void ngtcp2_qlog_write_frame(ngtcp2_qlog *qlog, const ngtcp2_frame *fr) { + uint8_t *p = qlog->buf.last; + + if (!qlog->write) { + return; + } + + switch (fr->type) { + case NGTCP2_FRAME_PADDING: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_PADDING_FRAME_OVERHEAD + 1) { + return; + } + p = write_padding_frame(p, &fr->padding); + break; + case NGTCP2_FRAME_PING: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_PING_FRAME_OVERHEAD + 1) { + return; + } + p = write_ping_frame(p, &fr->ping); + break; + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_ACK_FRAME_BASE_OVERHEAD + + (size_t)(fr->type == NGTCP2_FRAME_ACK_ECN + ? NGTCP2_QLOG_ACK_FRAME_ECN_OVERHEAD + : 0) + + NGTCP2_QLOG_ACK_FRAME_RANGE_OVERHEAD * (1 + fr->ack.rangecnt) + 1) { + return; + } + p = write_ack_frame(p, &fr->ack); + break; + case NGTCP2_FRAME_RESET_STREAM: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_RESET_STREAM_FRAME_OVERHEAD + 1) { + return; + } + p = write_reset_stream_frame(p, &fr->reset_stream); + break; + case NGTCP2_FRAME_STOP_SENDING: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_STOP_SENDING_FRAME_OVERHEAD + 1) { + return; + } + p = write_stop_sending_frame(p, &fr->stop_sending); + break; + case NGTCP2_FRAME_CRYPTO: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_CRYPTO_FRAME_OVERHEAD + 1) { + return; + } + p = write_crypto_frame(p, &fr->crypto); + break; + case NGTCP2_FRAME_NEW_TOKEN: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_NEW_TOKEN_FRAME_OVERHEAD + fr->new_token.tokenlen * 2 + 1) { + return; + } + p = write_new_token_frame(p, &fr->new_token); + break; + case NGTCP2_FRAME_STREAM: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_STREAM_FRAME_OVERHEAD + 1) { + return; + } + p = write_stream_frame(p, &fr->stream); + break; + case NGTCP2_FRAME_MAX_DATA: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_MAX_DATA_FRAME_OVERHEAD + 1) { + return; + } + p = write_max_data_frame(p, &fr->max_data); + break; + case NGTCP2_FRAME_MAX_STREAM_DATA: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_MAX_STREAM_DATA_FRAME_OVERHEAD + 1) { + return; + } + p = write_max_stream_data_frame(p, &fr->max_stream_data); + break; + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_MAX_STREAMS_FRAME_OVERHEAD + 1) { + return; + } + p = write_max_streams_frame(p, &fr->max_streams); + break; + case NGTCP2_FRAME_DATA_BLOCKED: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_DATA_BLOCKED_FRAME_OVERHEAD + 1) { + return; + } + p = write_data_blocked_frame(p, &fr->data_blocked); + break; + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_STREAM_DATA_BLOCKED_FRAME_OVERHEAD + 1) { + return; + } + p = write_stream_data_blocked_frame(p, &fr->stream_data_blocked); + break; + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_STREAMS_BLOCKED_FRAME_OVERHEAD + 1) { + return; + } + p = write_streams_blocked_frame(p, &fr->streams_blocked); + break; + case NGTCP2_FRAME_NEW_CONNECTION_ID: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_NEW_CONNECTION_ID_FRAME_OVERHEAD + 1) { + return; + } + p = write_new_connection_id_frame(p, &fr->new_connection_id); + break; + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_RETIRE_CONNECTION_ID_FRAME_OVERHEAD + 1) { + return; + } + p = write_retire_connection_id_frame(p, &fr->retire_connection_id); + break; + case NGTCP2_FRAME_PATH_CHALLENGE: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_PATH_CHALLENGE_FRAME_OVERHEAD + 1) { + return; + } + p = write_path_challenge_frame(p, &fr->path_challenge); + break; + case NGTCP2_FRAME_PATH_RESPONSE: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_PATH_RESPONSE_FRAME_OVERHEAD + 1) { + return; + } + p = write_path_response_frame(p, &fr->path_response); + break; + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_CONNECTION_CLOSE_FRAME_OVERHEAD + 1) { + return; + } + p = write_connection_close_frame(p, &fr->connection_close); + break; + case NGTCP2_FRAME_HANDSHAKE_DONE: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_HANDSHAKE_DONE_FRAME_OVERHEAD + 1) { + return; + } + p = write_handshake_done_frame(p, &fr->handshake_done); + break; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_DATAGRAM_FRAME_OVERHEAD + 1) { + return; + } + p = write_datagram_frame(p, &fr->datagram); + break; + default: + ngtcp2_unreachable(); + } + + *p++ = ','; + + qlog->buf.last = p; +} + +void ngtcp2_qlog_pkt_received_start(ngtcp2_qlog *qlog) { + qlog_pkt_write_start(qlog, /* sent = */ 0); +} + +void ngtcp2_qlog_pkt_received_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen) { + qlog_pkt_write_end(qlog, hd, pktlen); +} + +void ngtcp2_qlog_pkt_sent_start(ngtcp2_qlog *qlog) { + qlog_pkt_write_start(qlog, /* sent = */ 1); +} + +void ngtcp2_qlog_pkt_sent_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen) { + qlog_pkt_write_end(qlog, hd, pktlen); +} + +void ngtcp2_qlog_parameters_set_transport_params( + ngtcp2_qlog *qlog, const ngtcp2_transport_params *params, int server, + ngtcp2_qlog_side side) { + uint8_t buf[1024]; + uint8_t *p = buf; + const ngtcp2_preferred_addr *paddr; + const ngtcp2_sockaddr_in *sa_in; + const ngtcp2_sockaddr_in6 *sa_in6; + + if (!qlog->write) { + return; + } + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim( + p, ",\"name\":\"transport:parameters_set\",\"data\":{\"owner\":"); + + if (side == NGTCP2_QLOG_SIDE_LOCAL) { + p = write_string(p, "local"); + } else { + p = write_string(p, "remote"); + } + + *p++ = ','; + p = write_pair_cid(p, "initial_source_connection_id", ¶ms->initial_scid); + *p++ = ','; + if (side == (server ? NGTCP2_QLOG_SIDE_LOCAL : NGTCP2_QLOG_SIDE_REMOTE)) { + p = write_pair_cid(p, "original_destination_connection_id", + ¶ms->original_dcid); + *p++ = ','; + } + if (params->retry_scid_present) { + p = write_pair_cid(p, "retry_source_connection_id", ¶ms->retry_scid); + *p++ = ','; + } + if (params->stateless_reset_token_present) { + p = write_verbatim(p, "\"stateless_reset_token\":{"); + p = write_pair_hex(p, "data", params->stateless_reset_token, + sizeof(params->stateless_reset_token)); + *p++ = '}'; + *p++ = ','; + } + p = write_pair_bool(p, "disable_active_migration", + params->disable_active_migration); + *p++ = ','; + p = write_pair_duration(p, "max_idle_timeout", params->max_idle_timeout); + *p++ = ','; + p = write_pair_number(p, "max_udp_payload_size", + params->max_udp_payload_size); + *p++ = ','; + p = write_pair_number(p, "ack_delay_exponent", params->ack_delay_exponent); + *p++ = ','; + p = write_pair_duration(p, "max_ack_delay", params->max_ack_delay); + *p++ = ','; + p = write_pair_number(p, "active_connection_id_limit", + params->active_connection_id_limit); + *p++ = ','; + p = write_pair_number(p, "initial_max_data", params->initial_max_data); + *p++ = ','; + p = write_pair_number(p, "initial_max_stream_data_bidi_local", + params->initial_max_stream_data_bidi_local); + *p++ = ','; + p = write_pair_number(p, "initial_max_stream_data_bidi_remote", + params->initial_max_stream_data_bidi_remote); + *p++ = ','; + p = write_pair_number(p, "initial_max_stream_data_uni", + params->initial_max_stream_data_uni); + *p++ = ','; + p = write_pair_number(p, "initial_max_streams_bidi", + params->initial_max_streams_bidi); + *p++ = ','; + p = write_pair_number(p, "initial_max_streams_uni", + params->initial_max_streams_uni); + if (params->preferred_address_present) { + *p++ = ','; + paddr = ¶ms->preferred_address; + p = write_string(p, "preferred_address"); + *p++ = ':'; + *p++ = '{'; + + if (paddr->ipv4_present) { + sa_in = &paddr->ipv4; + + p = write_pair_hex(p, "ip_v4", (const uint8_t *)&sa_in->sin_addr, + sizeof(sa_in->sin_addr)); + *p++ = ','; + p = write_pair_number(p, "port_v4", ngtcp2_ntohs(sa_in->sin_port)); + *p++ = ','; + } + + if (paddr->ipv6_present) { + sa_in6 = &paddr->ipv6; + + p = write_pair_hex(p, "ip_v6", (const uint8_t *)&sa_in6->sin6_addr, + sizeof(sa_in6->sin6_addr)); + *p++ = ','; + p = write_pair_number(p, "port_v6", ngtcp2_ntohs(sa_in6->sin6_port)); + *p++ = ','; + } + + p = write_pair_cid(p, "connection_id", &paddr->cid); + p = write_verbatim(p, ",\"stateless_reset_token\":{"); + p = write_pair_hex(p, "data", paddr->stateless_reset_token, + sizeof(paddr->stateless_reset_token)); + *p++ = '}'; + *p++ = '}'; + } + *p++ = ','; + p = write_pair_number(p, "max_datagram_frame_size", + params->max_datagram_frame_size); + *p++ = ','; + p = write_pair_bool(p, "grease_quic_bit", params->grease_quic_bit); + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_metrics_updated(ngtcp2_qlog *qlog, + const ngtcp2_conn_stat *cstat) { + uint8_t buf[1024]; + uint8_t *p = buf; + + if (!qlog->write) { + return; + } + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim(p, ",\"name\":\"recovery:metrics_updated\",\"data\":{"); + + if (cstat->min_rtt != UINT64_MAX) { + p = write_pair_duration(p, "min_rtt", cstat->min_rtt); + *p++ = ','; + } + p = write_pair_duration(p, "smoothed_rtt", cstat->smoothed_rtt); + *p++ = ','; + p = write_pair_duration(p, "latest_rtt", cstat->latest_rtt); + *p++ = ','; + p = write_pair_duration(p, "rtt_variance", cstat->rttvar); + *p++ = ','; + p = write_pair_number(p, "pto_count", cstat->pto_count); + *p++ = ','; + p = write_pair_number(p, "congestion_window", cstat->cwnd); + *p++ = ','; + p = write_pair_number(p, "bytes_in_flight", cstat->bytes_in_flight); + if (cstat->ssthresh != UINT64_MAX) { + *p++ = ','; + p = write_pair_number(p, "ssthresh", cstat->ssthresh); + } + + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_pkt_lost(ngtcp2_qlog *qlog, ngtcp2_rtb_entry *ent) { + uint8_t buf[256]; + uint8_t *p = buf; + ngtcp2_pkt_hd hd = {0}; + + if (!qlog->write) { + return; + } + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim( + p, ",\"name\":\"recovery:packet_lost\",\"data\":{\"header\":"); + + hd.type = ent->hd.type; + hd.flags = ent->hd.flags; + hd.pkt_num = ent->hd.pkt_num; + + p = write_pkt_hd(p, &hd); + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_retry_pkt_received(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + const ngtcp2_pkt_retry *retry) { + uint8_t rawbuf[1024]; + ngtcp2_buf buf; + + if (!qlog->write) { + return; + } + + ngtcp2_buf_init(&buf, rawbuf, sizeof(rawbuf)); + + *buf.last++ = '\x1e'; + *buf.last++ = '{'; + buf.last = qlog_write_time(qlog, buf.last); + buf.last = write_verbatim( + buf.last, + ",\"name\":\"transport:packet_received\",\"data\":{\"header\":"); + + if (ngtcp2_buf_left(&buf) < + NGTCP2_QLOG_PKT_HD_OVERHEAD + hd->tokenlen * 2 + + sizeof(",\"retry_token\":{\"data\":\"\"}}}\n") - 1 + + retry->tokenlen * 2) { + return; + } + + buf.last = write_pkt_hd(buf.last, hd); + buf.last = write_verbatim(buf.last, ",\"retry_token\":{"); + buf.last = write_pair_hex(buf.last, "data", retry->token, retry->tokenlen); + buf.last = write_verbatim(buf.last, "}}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf.pos, + ngtcp2_buf_len(&buf)); +} + +void ngtcp2_qlog_stateless_reset_pkt_received( + ngtcp2_qlog *qlog, const ngtcp2_pkt_stateless_reset *sr) { + uint8_t buf[256]; + uint8_t *p = buf; + ngtcp2_pkt_hd hd = {0}; + + if (!qlog->write) { + return; + } + + hd.type = NGTCP2_PKT_STATELESS_RESET; + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim( + p, ",\"name\":\"transport:packet_received\",\"data\":{\"header\":"); + p = write_pkt_hd(p, &hd); + *p++ = ','; + p = write_pair_hex(p, "stateless_reset_token", sr->stateless_reset_token, + NGTCP2_STATELESS_RESET_TOKENLEN); + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_version_negotiation_pkt_received(ngtcp2_qlog *qlog, + const ngtcp2_pkt_hd *hd, + const uint32_t *sv, + size_t nsv) { + uint8_t rawbuf[512]; + ngtcp2_buf buf; + size_t i; + uint32_t v; + + if (!qlog->write) { + return; + } + + ngtcp2_buf_init(&buf, rawbuf, sizeof(rawbuf)); + + *buf.last++ = '\x1e'; + *buf.last++ = '{'; + buf.last = qlog_write_time(qlog, buf.last); + buf.last = write_verbatim( + buf.last, + ",\"name\":\"transport:packet_received\",\"data\":{\"header\":"); + buf.last = write_pkt_hd(buf.last, hd); + buf.last = write_verbatim(buf.last, ",\"supported_versions\":["); + + if (nsv) { + if (ngtcp2_buf_left(&buf) < + (sizeof("\"xxxxxxxx\",") - 1) * nsv - 1 + sizeof("]}}\n") - 1) { + return; + } + + v = ngtcp2_htonl(sv[0]); + buf.last = write_hex(buf.last, (const uint8_t *)&v, sizeof(v)); + + for (i = 1; i < nsv; ++i) { + *buf.last++ = ','; + v = ngtcp2_htonl(sv[i]); + buf.last = write_hex(buf.last, (const uint8_t *)&v, sizeof(v)); + } + } + + buf.last = write_verbatim(buf.last, "]}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf.pos, + ngtcp2_buf_len(&buf)); +} |