lsquic_logger.c revision 55f8042d
1229fce07SDmitri Tikhonov/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc.  See LICENSE. */
250aadb33SDmitri Tikhonov/*
350aadb33SDmitri Tikhonov * LSQUIC Logger implementation.
450aadb33SDmitri Tikhonov */
550aadb33SDmitri Tikhonov
6560db45bSDmitri Tikhonov#include <assert.h>
750aadb33SDmitri Tikhonov#include <errno.h>
850aadb33SDmitri Tikhonov#include <inttypes.h>
950aadb33SDmitri Tikhonov#include <stdarg.h>
1050aadb33SDmitri Tikhonov#include <stdio.h>
1150aadb33SDmitri Tikhonov#include <stdlib.h>
1250aadb33SDmitri Tikhonov#include <string.h>
13461e84d8SAmol Deshpande#ifndef WIN32
1450aadb33SDmitri Tikhonov#include <sys/time.h>
15461e84d8SAmol Deshpande#endif
1650aadb33SDmitri Tikhonov#include <time.h>
1750aadb33SDmitri Tikhonov
1850aadb33SDmitri Tikhonov#define LSQUIC_LOGGER_MODULE LSQLM_LOGGER /* Quis custodiet ipsos custodes? */
1950aadb33SDmitri Tikhonov#include "lsquic.h"
205392f7a3SLiteSpeed Tech#include "lsquic_logger.h"
2150aadb33SDmitri Tikhonov
225392f7a3SLiteSpeed Tech#define MAX_LINE_LEN 8192
2355f8042dSDmitri Tikhonov/* Expanded TRUNC_FMT should not exceed TRUNC_SZ bytes.  At the same time,
2455f8042dSDmitri Tikhonov * TRUNC_SZ should be significantly smaller than MAX_LINE_LEN.
2555f8042dSDmitri Tikhonov */
2655f8042dSDmitri Tikhonov#define TRUNC_FMT "<truncated, need %d bytes>"
2755f8042dSDmitri Tikhonov#define TRUNC_SZ 40
2855f8042dSDmitri Tikhonov#define FORMAT_PROBLEM(lb, len, max) ((lb < 0) || (lb + len >= max))
295392f7a3SLiteSpeed Tech
305392f7a3SLiteSpeed Tech/* TODO: display GQUIC CIDs in Chrome-compatible format */
313229dd11SDmitri Tikhonov
3250aadb33SDmitri Tikhonovstatic enum lsquic_logger_timestamp_style g_llts = LLTS_NONE;
3350aadb33SDmitri Tikhonov
3450aadb33SDmitri Tikhonovstatic int
355392f7a3SLiteSpeed Technull_log_buf (void *ctx, const char *buf, size_t len)
3650aadb33SDmitri Tikhonov{
3750aadb33SDmitri Tikhonov    return 0;
3850aadb33SDmitri Tikhonov}
3950aadb33SDmitri Tikhonov
4050aadb33SDmitri Tikhonovstatic int
415392f7a3SLiteSpeed Techfile_log_buf (void *ctx, const char *buf, size_t len)
4250aadb33SDmitri Tikhonov{
435392f7a3SLiteSpeed Tech    return (int)fwrite(buf, sizeof(char), len, (FILE *) ctx);
4450aadb33SDmitri Tikhonov}
4550aadb33SDmitri Tikhonov
4650aadb33SDmitri Tikhonovstatic const struct lsquic_logger_if file_logger_if = {
475392f7a3SLiteSpeed Tech    .log_buf    = file_log_buf,
4850aadb33SDmitri Tikhonov};
4950aadb33SDmitri Tikhonov
5050aadb33SDmitri Tikhonovstatic const struct lsquic_logger_if null_logger_if = {
515392f7a3SLiteSpeed Tech    .log_buf    = null_log_buf,
5250aadb33SDmitri Tikhonov};
5350aadb33SDmitri Tikhonov
5450aadb33SDmitri Tikhonovstatic void *logger_ctx = NULL;
5550aadb33SDmitri Tikhonovstatic const struct lsquic_logger_if *logger_if = &null_logger_if;
5650aadb33SDmitri Tikhonov
5750aadb33SDmitri Tikhonovenum lsq_log_level lsq_log_levels[N_LSQUIC_LOGGER_MODULES] = {
5850aadb33SDmitri Tikhonov    [LSQLM_NOMODULE]    = LSQ_LOG_WARN,
5950aadb33SDmitri Tikhonov    [LSQLM_LOGGER]      = LSQ_LOG_WARN,
6050aadb33SDmitri Tikhonov    [LSQLM_EVENT]       = LSQ_LOG_WARN,
6150aadb33SDmitri Tikhonov    [LSQLM_ENGINE]      = LSQ_LOG_WARN,
6250aadb33SDmitri Tikhonov    [LSQLM_CONN]        = LSQ_LOG_WARN,
6350aadb33SDmitri Tikhonov    [LSQLM_RECHIST]     = LSQ_LOG_WARN,
6450aadb33SDmitri Tikhonov    [LSQLM_STREAM]      = LSQ_LOG_WARN,
6550aadb33SDmitri Tikhonov    [LSQLM_PARSE]       = LSQ_LOG_WARN,
6650aadb33SDmitri Tikhonov    [LSQLM_CFCW]        = LSQ_LOG_WARN,
6750aadb33SDmitri Tikhonov    [LSQLM_SFCW]        = LSQ_LOG_WARN,
6850aadb33SDmitri Tikhonov    [LSQLM_SENDCTL]     = LSQ_LOG_WARN,
6950aadb33SDmitri Tikhonov    [LSQLM_ALARMSET]    = LSQ_LOG_WARN,
7050aadb33SDmitri Tikhonov    [LSQLM_CRYPTO]      = LSQ_LOG_WARN,
7150aadb33SDmitri Tikhonov    [LSQLM_HANDSHAKE]   = LSQ_LOG_WARN,
7250aadb33SDmitri Tikhonov    [LSQLM_HSK_ADAPTER] = LSQ_LOG_WARN,
735392f7a3SLiteSpeed Tech    [LSQLM_BBR]         = LSQ_LOG_WARN,
7450aadb33SDmitri Tikhonov    [LSQLM_CUBIC]       = LSQ_LOG_WARN,
7550aadb33SDmitri Tikhonov    [LSQLM_HEADERS]     = LSQ_LOG_WARN,
7650aadb33SDmitri Tikhonov    [LSQLM_FRAME_READER]= LSQ_LOG_WARN,
7750aadb33SDmitri Tikhonov    [LSQLM_FRAME_WRITER]= LSQ_LOG_WARN,
785392f7a3SLiteSpeed Tech    [LSQLM_MINI_CONN]   = LSQ_LOG_WARN,
795392f7a3SLiteSpeed Tech    [LSQLM_TOKGEN]      = LSQ_LOG_WARN,
8050aadb33SDmitri Tikhonov    [LSQLM_ENG_HIST]    = LSQ_LOG_WARN,
8150aadb33SDmitri Tikhonov    [LSQLM_SPI]         = LSQ_LOG_WARN,
8250aadb33SDmitri Tikhonov    [LSQLM_DI]          = LSQ_LOG_WARN,
835392f7a3SLiteSpeed Tech    [LSQLM_PRQ]         = LSQ_LOG_WARN,
8450aadb33SDmitri Tikhonov    [LSQLM_PACER]       = LSQ_LOG_WARN,
85e8bd737dSDmitri Tikhonov    [LSQLM_MIN_HEAP]    = LSQ_LOG_WARN,
863b55e6aeSDmitri Tikhonov    [LSQLM_HTTP1X]      = LSQ_LOG_WARN,
8755cd0b38SDmitri Tikhonov    [LSQLM_QLOG]        = LSQ_LOG_WARN,
885392f7a3SLiteSpeed Tech    [LSQLM_TRAPA]       = LSQ_LOG_WARN,
895392f7a3SLiteSpeed Tech    [LSQLM_PURGA]       = LSQ_LOG_WARN,
905392f7a3SLiteSpeed Tech    [LSQLM_HCSI_READER] = LSQ_LOG_WARN,
915392f7a3SLiteSpeed Tech    [LSQLM_HCSO_WRITER] = LSQ_LOG_WARN,
925392f7a3SLiteSpeed Tech    [LSQLM_QENC_HDL]    = LSQ_LOG_WARN,
935392f7a3SLiteSpeed Tech    [LSQLM_QDEC_HDL]    = LSQ_LOG_WARN,
945392f7a3SLiteSpeed Tech    [LSQLM_QPACK_ENC]    = LSQ_LOG_WARN,
955392f7a3SLiteSpeed Tech    [LSQLM_QPACK_DEC]    = LSQ_LOG_WARN,
965392f7a3SLiteSpeed Tech    [LSQLM_PRIO]        = LSQ_LOG_WARN,
975392f7a3SLiteSpeed Tech    [LSQLM_BW_SAMPLER]  = LSQ_LOG_WARN,
9850aadb33SDmitri Tikhonov};
9950aadb33SDmitri Tikhonov
10050aadb33SDmitri Tikhonovconst char *const lsqlm_to_str[N_LSQUIC_LOGGER_MODULES] = {
10150aadb33SDmitri Tikhonov    [LSQLM_NOMODULE]    = "",
10250aadb33SDmitri Tikhonov    [LSQLM_LOGGER]      = "logger",
10350aadb33SDmitri Tikhonov    [LSQLM_EVENT]       = "event",
10450aadb33SDmitri Tikhonov    [LSQLM_ENGINE]      = "engine",
10550aadb33SDmitri Tikhonov    [LSQLM_CONN]        = "conn",
10650aadb33SDmitri Tikhonov    [LSQLM_RECHIST]     = "rechist",
10750aadb33SDmitri Tikhonov    [LSQLM_STREAM]      = "stream",
10850aadb33SDmitri Tikhonov    [LSQLM_PARSE]       = "parse",
10950aadb33SDmitri Tikhonov    [LSQLM_CFCW]        = "cfcw",
11050aadb33SDmitri Tikhonov    [LSQLM_SFCW]        = "sfcw",
11150aadb33SDmitri Tikhonov    [LSQLM_SENDCTL]     = "sendctl",
11250aadb33SDmitri Tikhonov    [LSQLM_ALARMSET]    = "alarmset",
11350aadb33SDmitri Tikhonov    [LSQLM_CRYPTO]      = "crypto",
11450aadb33SDmitri Tikhonov    [LSQLM_HANDSHAKE]   = "handshake",
11550aadb33SDmitri Tikhonov    [LSQLM_HSK_ADAPTER] = "hsk-adapter",
1165392f7a3SLiteSpeed Tech    [LSQLM_BBR]         = "bbr",
11750aadb33SDmitri Tikhonov    [LSQLM_CUBIC]       = "cubic",
11850aadb33SDmitri Tikhonov    [LSQLM_HEADERS]     = "headers",
11950aadb33SDmitri Tikhonov    [LSQLM_FRAME_READER]= "frame-reader",
12050aadb33SDmitri Tikhonov    [LSQLM_FRAME_WRITER]= "frame-writer",
1215392f7a3SLiteSpeed Tech    [LSQLM_MINI_CONN]   = "mini-conn",
1225392f7a3SLiteSpeed Tech    [LSQLM_TOKGEN]      = "tokgen",
12350aadb33SDmitri Tikhonov    [LSQLM_ENG_HIST]    = "eng-hist",
12450aadb33SDmitri Tikhonov    [LSQLM_SPI]         = "spi",
12550aadb33SDmitri Tikhonov    [LSQLM_DI]          = "di",
1265392f7a3SLiteSpeed Tech    [LSQLM_PRQ]         = "prq",
12750aadb33SDmitri Tikhonov    [LSQLM_PACER]       = "pacer",
128e8bd737dSDmitri Tikhonov    [LSQLM_MIN_HEAP]    = "min-heap",
1293b55e6aeSDmitri Tikhonov    [LSQLM_HTTP1X]      = "http1x",
13055cd0b38SDmitri Tikhonov    [LSQLM_QLOG]        = "qlog",
1315392f7a3SLiteSpeed Tech    [LSQLM_TRAPA]       = "trapa",
1325392f7a3SLiteSpeed Tech    [LSQLM_PURGA]       = "purga",
1335392f7a3SLiteSpeed Tech    [LSQLM_HCSI_READER] = "hcsi-reader",
1345392f7a3SLiteSpeed Tech    [LSQLM_HCSO_WRITER] = "hcso-writer",
1355392f7a3SLiteSpeed Tech    [LSQLM_QENC_HDL]    = "qenc-hdl",
1365392f7a3SLiteSpeed Tech    [LSQLM_QDEC_HDL]    = "qdec-hdl",
1375392f7a3SLiteSpeed Tech    [LSQLM_QPACK_ENC]    = "qpack-enc",
1385392f7a3SLiteSpeed Tech    [LSQLM_QPACK_DEC]    = "qpack-dec",
1395392f7a3SLiteSpeed Tech    [LSQLM_PRIO]        = "prio",
1405392f7a3SLiteSpeed Tech    [LSQLM_BW_SAMPLER]  = "bw-sampler",
14150aadb33SDmitri Tikhonov};
14250aadb33SDmitri Tikhonov
14350aadb33SDmitri Tikhonovconst char *const lsq_loglevel2str[N_LSQUIC_LOG_LEVELS] = {
14450aadb33SDmitri Tikhonov    [LSQ_LOG_ALERT]   =  "ALERT",
14550aadb33SDmitri Tikhonov    [LSQ_LOG_CRIT]    =  "CRIT",
14650aadb33SDmitri Tikhonov    [LSQ_LOG_DEBUG]   =  "DEBUG",
14750aadb33SDmitri Tikhonov    [LSQ_LOG_EMERG]   =  "EMERG",
14850aadb33SDmitri Tikhonov    [LSQ_LOG_ERROR]   =  "ERROR",
14950aadb33SDmitri Tikhonov    [LSQ_LOG_INFO]    =  "INFO",
15050aadb33SDmitri Tikhonov    [LSQ_LOG_NOTICE]  =  "NOTICE",
15150aadb33SDmitri Tikhonov    [LSQ_LOG_WARN]    =  "WARN",
15250aadb33SDmitri Tikhonov};
15350aadb33SDmitri Tikhonov
15450aadb33SDmitri Tikhonov
155b93f59beSBob Perper#ifdef WIN32
156560db45bSDmitri Tikhonov#define DELTA_EPOCH_IN_TICKS  116444736000000000Ui64
157b93f59beSBob Perperstruct timezone
158b93f59beSBob Perper{
159ab5c8df2SBob Perper    time_t tz_minuteswest;         /* minutes W of Greenwich */
160ab5c8df2SBob Perper    time_t tz_dsttime;             /* type of dst correction */
161b93f59beSBob Perper};
162b93f59beSBob Perper
163b93f59beSBob Perperstatic int
164b93f59beSBob Perpergettimeofday (struct timeval *tv, struct timezone *tz)
165b93f59beSBob Perper{
166b93f59beSBob Perper    FILETIME ft;
167560db45bSDmitri Tikhonov    uint64_t tmpres;
168b93f59beSBob Perper    static int tzflag;
169b93f59beSBob Perper
170b93f59beSBob Perper    if (NULL != tv)
171b93f59beSBob Perper    {
172b93f59beSBob Perper        GetSystemTimeAsFileTime(&ft);
173b93f59beSBob Perper
174560db45bSDmitri Tikhonov        tmpres = ((uint64_t) ft.dwHighDateTime << 32)
175560db45bSDmitri Tikhonov               | (ft.dwLowDateTime);
176b93f59beSBob Perper
177560db45bSDmitri Tikhonov        tmpres -= DELTA_EPOCH_IN_TICKS;
178560db45bSDmitri Tikhonov        tv->tv_sec = tmpres / 10000000;
179560db45bSDmitri Tikhonov        tv->tv_usec = tmpres % 1000000;
180b93f59beSBob Perper    }
181b93f59beSBob Perper
182b93f59beSBob Perper    if (NULL != tz)
183b93f59beSBob Perper    {
184b93f59beSBob Perper        if (!tzflag)
185b93f59beSBob Perper        {
186b93f59beSBob Perper            _tzset();
187b93f59beSBob Perper            tzflag++;
188b93f59beSBob Perper        }
189b93f59beSBob Perper        tz->tz_minuteswest = _timezone / 60;
190b93f59beSBob Perper        tz->tz_dsttime = _daylight;
191b93f59beSBob Perper    }
192b93f59beSBob Perper
193b93f59beSBob Perper    return 0;
194b93f59beSBob Perper}
195b93f59beSBob Perper#endif
196b93f59beSBob Perper
197b93f59beSBob Perper
1985392f7a3SLiteSpeed Techstatic size_t
1995392f7a3SLiteSpeed Techprint_timestamp (char *buf, size_t max)
20050aadb33SDmitri Tikhonov{
20150aadb33SDmitri Tikhonov    struct tm tm;
20250aadb33SDmitri Tikhonov    struct timeval tv;
2035392f7a3SLiteSpeed Tech    size_t len = 0;
2045392f7a3SLiteSpeed Tech
20550aadb33SDmitri Tikhonov    gettimeofday(&tv, NULL);
206ab5c8df2SBob Perper#ifdef WIN32
207ab5c8df2SBob Perper    {
2087b1586ddSDmitri Tikhonov        time_t t = tv.tv_sec;
209560db45bSDmitri Tikhonov#ifndef NDEBUG
2107b1586ddSDmitri Tikhonov        errno_t e =
211560db45bSDmitri Tikhonov#endif
2127b1586ddSDmitri Tikhonov	localtime_s(&tm, &t);
213560db45bSDmitri Tikhonov	assert(!e);
214ab5c8df2SBob Perper    }
215ab5c8df2SBob Perper#else
21650aadb33SDmitri Tikhonov    localtime_r(&tv.tv_sec, &tm);
217ab5c8df2SBob Perper#endif
218bfc7bfd8SDmitri Tikhonov    if (g_llts == LLTS_YYYYMMDD_HHMMSSUS)
2195392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%04d-%02d-%02d %02d:%02d:%02d.%06d ",
220bfc7bfd8SDmitri Tikhonov            tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
221bfc7bfd8SDmitri Tikhonov            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec));
222bfc7bfd8SDmitri Tikhonov    else if (g_llts == LLTS_YYYYMMDD_HHMMSSMS)
2235392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%04d-%02d-%02d %02d:%02d:%02d.%03d ",
22450aadb33SDmitri Tikhonov            tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
22550aadb33SDmitri Tikhonov            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec / 1000));
22650aadb33SDmitri Tikhonov    else if (g_llts == LLTS_HHMMSSMS)
2275392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%02d:%02d:%02d.%03d ",
2285392f7a3SLiteSpeed Tech            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec / 1000));
22950aadb33SDmitri Tikhonov    else if (g_llts == LLTS_HHMMSSUS)
2305392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%02d:%02d:%02d.%06d ",
2315392f7a3SLiteSpeed Tech            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) tv.tv_usec);
23250aadb33SDmitri Tikhonov    else if (g_llts == LLTS_CHROMELIKE)
2335392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%02d%02d/%02d%02d%02d.%06d ",
2345392f7a3SLiteSpeed Tech            tm.tm_mon + 1, tm.tm_mday,tm.tm_hour, tm.tm_min,
2355392f7a3SLiteSpeed Tech            tm.tm_sec, (int) tv.tv_usec);
2365392f7a3SLiteSpeed Tech    return len;
23750aadb33SDmitri Tikhonov}
23850aadb33SDmitri Tikhonov
23950aadb33SDmitri Tikhonov
24050aadb33SDmitri Tikhonovvoid
24150aadb33SDmitri Tikhonovlsquic_logger_log3 (enum lsq_log_level log_level,
24250aadb33SDmitri Tikhonov                    enum lsquic_logger_module module,
2435392f7a3SLiteSpeed Tech                    const lsquic_cid_t *conn_id, lsquic_stream_id_t stream_id,
2445392f7a3SLiteSpeed Tech                    const char *fmt, ...)
24550aadb33SDmitri Tikhonov{
24650aadb33SDmitri Tikhonov    const int saved_errno = errno;
2475392f7a3SLiteSpeed Tech    char cidbuf_[MAX_CID_LEN * 2 + 1];
2485392f7a3SLiteSpeed Tech    size_t len = 0;
24955f8042dSDmitri Tikhonov    int lb;
2505392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
2515392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
25250aadb33SDmitri Tikhonov
25350aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
2545392f7a3SLiteSpeed Tech    {
2555392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
2565392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
2575392f7a3SLiteSpeed Tech            goto end;
2585392f7a3SLiteSpeed Tech        len += lb;
2595392f7a3SLiteSpeed Tech    }
2605392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] [QUIC:%"CID_FMT"-%"PRIu64"] %s: ",
2615392f7a3SLiteSpeed Tech        lsq_loglevel2str[log_level], CID_BITS(conn_id),
2625392f7a3SLiteSpeed Tech        stream_id, lsqlm_to_str[module]);
2635392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
2645392f7a3SLiteSpeed Tech        goto end;
2655392f7a3SLiteSpeed Tech    len += lb;
26650aadb33SDmitri Tikhonov    va_list ap;
26750aadb33SDmitri Tikhonov    va_start(ap, fmt);
2685392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
269a0e1aeeeSDmitri Tikhonov    va_end(ap);
27055f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
27155f8042dSDmitri Tikhonov    {
27255f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
27355f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
27455f8042dSDmitri Tikhonov    }
2755392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
2765392f7a3SLiteSpeed Tech        goto end;
2775392f7a3SLiteSpeed Tech    len += lb;
2785392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
2795392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
2805392f7a3SLiteSpeed Tech        goto end;
2815392f7a3SLiteSpeed Tech    len += lb;
2825392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
2835392f7a3SLiteSpeed Techend:
28450aadb33SDmitri Tikhonov    errno = saved_errno;
28550aadb33SDmitri Tikhonov}
28650aadb33SDmitri Tikhonov
28750aadb33SDmitri Tikhonov
28850aadb33SDmitri Tikhonovvoid
28950aadb33SDmitri Tikhonovlsquic_logger_log2 (enum lsq_log_level log_level,
29050aadb33SDmitri Tikhonov                    enum lsquic_logger_module module,
2915392f7a3SLiteSpeed Tech                    const struct lsquic_cid *conn_id, const char *fmt, ...)
29250aadb33SDmitri Tikhonov{
29350aadb33SDmitri Tikhonov    const int saved_errno = errno;
2945392f7a3SLiteSpeed Tech    char cidbuf_[MAX_CID_LEN * 2 + 1];
2955392f7a3SLiteSpeed Tech    size_t len = 0;
29655f8042dSDmitri Tikhonov    int lb;
2975392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
2985392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
29950aadb33SDmitri Tikhonov
30050aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
3015392f7a3SLiteSpeed Tech    {
3025392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
3035392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
3045392f7a3SLiteSpeed Tech            goto end;
3055392f7a3SLiteSpeed Tech        len += lb;
3065392f7a3SLiteSpeed Tech    }
30750aadb33SDmitri Tikhonov
3085392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] [QUIC:%"CID_FMT"] %s: ",
3095392f7a3SLiteSpeed Tech        lsq_loglevel2str[log_level], CID_BITS(conn_id), lsqlm_to_str[module]);
3105392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3115392f7a3SLiteSpeed Tech        goto end;
3125392f7a3SLiteSpeed Tech    len += lb;
31350aadb33SDmitri Tikhonov    va_list ap;
31450aadb33SDmitri Tikhonov    va_start(ap, fmt);
3155392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
316a0e1aeeeSDmitri Tikhonov    va_end(ap);
31755f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
31855f8042dSDmitri Tikhonov    {
31955f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
32055f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
32155f8042dSDmitri Tikhonov    }
3225392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3235392f7a3SLiteSpeed Tech        goto end;
3245392f7a3SLiteSpeed Tech    len += lb;
3255392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
3265392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3275392f7a3SLiteSpeed Tech        goto end;
3285392f7a3SLiteSpeed Tech    len += lb;
3295392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
3305392f7a3SLiteSpeed Techend:
33150aadb33SDmitri Tikhonov    errno = saved_errno;
33250aadb33SDmitri Tikhonov}
33350aadb33SDmitri Tikhonov
33450aadb33SDmitri Tikhonov
33550aadb33SDmitri Tikhonovvoid
33650aadb33SDmitri Tikhonovlsquic_logger_log1 (enum lsq_log_level log_level,
33750aadb33SDmitri Tikhonov                    enum lsquic_logger_module module,
33850aadb33SDmitri Tikhonov                    const char *fmt, ...)
33950aadb33SDmitri Tikhonov{
34050aadb33SDmitri Tikhonov    const int saved_errno = errno;
3415392f7a3SLiteSpeed Tech    size_t len = 0;
34255f8042dSDmitri Tikhonov    int lb;
3435392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
3445392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
34550aadb33SDmitri Tikhonov
34650aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
3475392f7a3SLiteSpeed Tech    {
3485392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
3495392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
3505392f7a3SLiteSpeed Tech            goto end;
3515392f7a3SLiteSpeed Tech        len += lb;
3525392f7a3SLiteSpeed Tech    }
3535392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] %s: ", lsq_loglevel2str[log_level],
35450aadb33SDmitri Tikhonov                                                lsqlm_to_str[module]);
3555392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3565392f7a3SLiteSpeed Tech        goto end;
3575392f7a3SLiteSpeed Tech    len += lb;
35850aadb33SDmitri Tikhonov    va_list ap;
35950aadb33SDmitri Tikhonov    va_start(ap, fmt);
3605392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
361a0e1aeeeSDmitri Tikhonov    va_end(ap);
36255f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
36355f8042dSDmitri Tikhonov    {
36455f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
36555f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
36655f8042dSDmitri Tikhonov    }
3675392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3685392f7a3SLiteSpeed Tech        goto end;
3695392f7a3SLiteSpeed Tech    len += lb;
3705392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
3715392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3725392f7a3SLiteSpeed Tech        goto end;
3735392f7a3SLiteSpeed Tech    len += lb;
3745392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
3755392f7a3SLiteSpeed Techend:
37650aadb33SDmitri Tikhonov    errno = saved_errno;
37750aadb33SDmitri Tikhonov}
37850aadb33SDmitri Tikhonov
37950aadb33SDmitri Tikhonov
38050aadb33SDmitri Tikhonovvoid
38150aadb33SDmitri Tikhonovlsquic_logger_log0 (enum lsq_log_level log_level, const char *fmt, ...)
38250aadb33SDmitri Tikhonov{
38350aadb33SDmitri Tikhonov    const int saved_errno = errno;
3845392f7a3SLiteSpeed Tech    size_t len = 0;
38555f8042dSDmitri Tikhonov    int lb;
3865392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
3875392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
38850aadb33SDmitri Tikhonov
38950aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
3905392f7a3SLiteSpeed Tech    {
3915392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
3925392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
3935392f7a3SLiteSpeed Tech            goto end;
3945392f7a3SLiteSpeed Tech        len += lb;
3955392f7a3SLiteSpeed Tech    }
39650aadb33SDmitri Tikhonov
3975392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] ", lsq_loglevel2str[log_level]);
3985392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3995392f7a3SLiteSpeed Tech        goto end;
4005392f7a3SLiteSpeed Tech    len += lb;
40150aadb33SDmitri Tikhonov    va_list ap;
40250aadb33SDmitri Tikhonov    va_start(ap, fmt);
4035392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
40450aadb33SDmitri Tikhonov    va_end(ap);
40555f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
40655f8042dSDmitri Tikhonov    {
40755f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
40855f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
40955f8042dSDmitri Tikhonov    }
4105392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
4115392f7a3SLiteSpeed Tech        goto end;
4125392f7a3SLiteSpeed Tech    len += lb;
4135392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
4145392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
4155392f7a3SLiteSpeed Tech        goto end;
4165392f7a3SLiteSpeed Tech    len += lb;
4175392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
4185392f7a3SLiteSpeed Techend:
41950aadb33SDmitri Tikhonov    errno = saved_errno;
42050aadb33SDmitri Tikhonov}
42150aadb33SDmitri Tikhonov
42250aadb33SDmitri Tikhonov
42350aadb33SDmitri Tikhonovvoid
42450aadb33SDmitri Tikhonovlsquic_logger_init (const struct lsquic_logger_if *lif, void *lctx,
42550aadb33SDmitri Tikhonov                    unsigned llts)
42650aadb33SDmitri Tikhonov{
42750aadb33SDmitri Tikhonov    logger_if  = lif;
42850aadb33SDmitri Tikhonov    logger_ctx = lctx;
42950aadb33SDmitri Tikhonov    if (llts < N_LLTS)
43050aadb33SDmitri Tikhonov        g_llts = llts;
43150aadb33SDmitri Tikhonov    LSQ_DEBUG("%s called", __func__);
43250aadb33SDmitri Tikhonov}
43350aadb33SDmitri Tikhonov
43450aadb33SDmitri Tikhonov
43550aadb33SDmitri Tikhonovenum lsquic_logger_module
43650aadb33SDmitri Tikhonovlsquic_str_to_logger_module (const char *str)
43750aadb33SDmitri Tikhonov{
43850aadb33SDmitri Tikhonov    enum lsquic_logger_module i;
43950aadb33SDmitri Tikhonov    for (i = 0; i < sizeof(lsqlm_to_str) / sizeof(lsqlm_to_str[0]); ++i)
44050aadb33SDmitri Tikhonov        if (0 == strcasecmp(lsqlm_to_str[i], str))
44150aadb33SDmitri Tikhonov            return i;
44250aadb33SDmitri Tikhonov    return -1;
44350aadb33SDmitri Tikhonov}
44450aadb33SDmitri Tikhonov
44550aadb33SDmitri Tikhonov
44650aadb33SDmitri Tikhonovenum lsq_log_level
44750aadb33SDmitri Tikhonovlsquic_str_to_log_level (const char *str)
44850aadb33SDmitri Tikhonov{
44950aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "emerg"))
45050aadb33SDmitri Tikhonov        return LSQ_LOG_EMERG;
45150aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "alert"))
45250aadb33SDmitri Tikhonov        return LSQ_LOG_ALERT;
45350aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "crit"))
45450aadb33SDmitri Tikhonov        return LSQ_LOG_CRIT;
45550aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "error"))
45650aadb33SDmitri Tikhonov        return LSQ_LOG_ERROR;
45750aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "warn"))
45850aadb33SDmitri Tikhonov        return LSQ_LOG_WARN;
45950aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "notice"))
46050aadb33SDmitri Tikhonov        return LSQ_LOG_NOTICE;
46150aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "info"))
46250aadb33SDmitri Tikhonov        return LSQ_LOG_INFO;
46350aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "debug"))
46450aadb33SDmitri Tikhonov        return LSQ_LOG_DEBUG;
46550aadb33SDmitri Tikhonov    return -1;
46650aadb33SDmitri Tikhonov}
46750aadb33SDmitri Tikhonov
46850aadb33SDmitri Tikhonov
46950aadb33SDmitri Tikhonovvoid
47050aadb33SDmitri Tikhonovlsquic_log_to_fstream (FILE *file, unsigned llts)
47150aadb33SDmitri Tikhonov{
47250aadb33SDmitri Tikhonov    lsquic_logger_init(&file_logger_if, file, llts);
47350aadb33SDmitri Tikhonov}
47450aadb33SDmitri Tikhonov
47550aadb33SDmitri Tikhonov
47650aadb33SDmitri Tikhonovint
47750aadb33SDmitri Tikhonovlsquic_logger_lopt (const char *optarg_orig)
47850aadb33SDmitri Tikhonov{
47950aadb33SDmitri Tikhonov    char *const optarg = strdup(optarg_orig);
48050aadb33SDmitri Tikhonov    char *mod_str;
48150aadb33SDmitri Tikhonov    int i;
48250aadb33SDmitri Tikhonov    for (i = 0; (mod_str = strtok(i ? NULL : optarg, ",")); ++i) {
48350aadb33SDmitri Tikhonov        char *level_str = strchr(mod_str, '=');
48450aadb33SDmitri Tikhonov        if (!level_str) {
48550aadb33SDmitri Tikhonov            fprintf(stderr, "Invalid module specification `%s'\n", mod_str);
48650aadb33SDmitri Tikhonov            break;
48750aadb33SDmitri Tikhonov        }
48850aadb33SDmitri Tikhonov        *level_str = '\0';
48950aadb33SDmitri Tikhonov        ++level_str;
49050aadb33SDmitri Tikhonov        enum lsquic_logger_module mod = lsquic_str_to_logger_module(mod_str);
49150aadb33SDmitri Tikhonov        if (-1 == (int) mod) {
49250aadb33SDmitri Tikhonov            fprintf(stderr, "`%s' is not a valid module name\n", mod_str);
49350aadb33SDmitri Tikhonov            break;
49450aadb33SDmitri Tikhonov        }
49550aadb33SDmitri Tikhonov        enum lsq_log_level level = lsquic_str_to_log_level(level_str);
49650aadb33SDmitri Tikhonov        if (-1 == (int) level) {
49750aadb33SDmitri Tikhonov            fprintf(stderr, "`%s' is not a valid level\n", level_str);
49850aadb33SDmitri Tikhonov            break;
49950aadb33SDmitri Tikhonov        }
50050aadb33SDmitri Tikhonov        lsq_log_levels[mod] = level;
50150aadb33SDmitri Tikhonov        LSQ_INFO("set %s to %s", mod_str, level_str);
50250aadb33SDmitri Tikhonov    }
50350aadb33SDmitri Tikhonov    free(optarg);
50450aadb33SDmitri Tikhonov    return mod_str == NULL ? 0 : -1;
50550aadb33SDmitri Tikhonov}
50650aadb33SDmitri Tikhonov
50750aadb33SDmitri Tikhonov
50850aadb33SDmitri Tikhonovint
50950aadb33SDmitri Tikhonovlsquic_set_log_level (const char *level_str)
51050aadb33SDmitri Tikhonov{
51150aadb33SDmitri Tikhonov    enum lsq_log_level level;
51250aadb33SDmitri Tikhonov    unsigned i;
51350aadb33SDmitri Tikhonov
51450aadb33SDmitri Tikhonov    level = lsquic_str_to_log_level(level_str);
51550aadb33SDmitri Tikhonov    if ((int) level >= 0)
51650aadb33SDmitri Tikhonov    {
51750aadb33SDmitri Tikhonov        for (i = 0; i < sizeof(lsq_log_levels) / sizeof(lsq_log_levels[0]); ++i)
51850aadb33SDmitri Tikhonov            lsq_log_levels[i] = level;
51950aadb33SDmitri Tikhonov        return 0;
52050aadb33SDmitri Tikhonov    }
52150aadb33SDmitri Tikhonov    else
52250aadb33SDmitri Tikhonov        return -1;
52350aadb33SDmitri Tikhonov}
5245392f7a3SLiteSpeed Tech
5255392f7a3SLiteSpeed Tech
5265392f7a3SLiteSpeed Tech/* `out' must be at least MAX_CID_LEN * 2 + 1 characters long */
5275392f7a3SLiteSpeed Techvoid
5285392f7a3SLiteSpeed Techlsquic_cid2str (const lsquic_cid_t *cid, char *out)
5295392f7a3SLiteSpeed Tech{
5305392f7a3SLiteSpeed Tech    static const char hex[] = "0123456789ABCDEF";
5315392f7a3SLiteSpeed Tech    int i;
5325392f7a3SLiteSpeed Tech
5335392f7a3SLiteSpeed Tech    for (i = 0; i < (int) cid->len; ++i)
5345392f7a3SLiteSpeed Tech    {
5355392f7a3SLiteSpeed Tech        *out++ = hex[ cid->idbuf[i] >> 4 ];
5365392f7a3SLiteSpeed Tech        *out++ = hex[ cid->idbuf[i] & 0xF ];
5375392f7a3SLiteSpeed Tech    }
5385392f7a3SLiteSpeed Tech    *out = '\0';
5395392f7a3SLiteSpeed Tech}
540