lsquic_logger.c revision fbc6cc04
17d09751dSDmitri Tikhonov/* Copyright (c) 2017 - 2020 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_STREAM]      = LSQ_LOG_WARN,
6450aadb33SDmitri Tikhonov    [LSQLM_PARSE]       = LSQ_LOG_WARN,
6550aadb33SDmitri Tikhonov    [LSQLM_CFCW]        = LSQ_LOG_WARN,
6650aadb33SDmitri Tikhonov    [LSQLM_SFCW]        = LSQ_LOG_WARN,
6750aadb33SDmitri Tikhonov    [LSQLM_SENDCTL]     = LSQ_LOG_WARN,
6850aadb33SDmitri Tikhonov    [LSQLM_ALARMSET]    = LSQ_LOG_WARN,
6950aadb33SDmitri Tikhonov    [LSQLM_CRYPTO]      = LSQ_LOG_WARN,
7050aadb33SDmitri Tikhonov    [LSQLM_HANDSHAKE]   = LSQ_LOG_WARN,
7150aadb33SDmitri Tikhonov    [LSQLM_HSK_ADAPTER] = LSQ_LOG_WARN,
725392f7a3SLiteSpeed Tech    [LSQLM_BBR]         = LSQ_LOG_WARN,
7350aadb33SDmitri Tikhonov    [LSQLM_CUBIC]       = LSQ_LOG_WARN,
74b1a7c3f9SDmitri Tikhonov    [LSQLM_ADAPTIVE_CC] = 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,
82fbc6cc04SDmitri Tikhonov    [LSQLM_HPI]         = LSQ_LOG_WARN,
8350aadb33SDmitri Tikhonov    [LSQLM_DI]          = LSQ_LOG_WARN,
845392f7a3SLiteSpeed Tech    [LSQLM_PRQ]         = LSQ_LOG_WARN,
8550aadb33SDmitri Tikhonov    [LSQLM_PACER]       = 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,
98b8fa6195SDmitri Tikhonov    [LSQLM_PACKET_RESIZE] = LSQ_LOG_WARN,
9950aadb33SDmitri Tikhonov};
10050aadb33SDmitri Tikhonov
10150aadb33SDmitri Tikhonovconst char *const lsqlm_to_str[N_LSQUIC_LOGGER_MODULES] = {
10250aadb33SDmitri Tikhonov    [LSQLM_NOMODULE]    = "",
10350aadb33SDmitri Tikhonov    [LSQLM_LOGGER]      = "logger",
10450aadb33SDmitri Tikhonov    [LSQLM_EVENT]       = "event",
10550aadb33SDmitri Tikhonov    [LSQLM_ENGINE]      = "engine",
10650aadb33SDmitri Tikhonov    [LSQLM_CONN]        = "conn",
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",
118b1a7c3f9SDmitri Tikhonov    [LSQLM_ADAPTIVE_CC] = "adaptive-cc",
11950aadb33SDmitri Tikhonov    [LSQLM_HEADERS]     = "headers",
12050aadb33SDmitri Tikhonov    [LSQLM_FRAME_READER]= "frame-reader",
12150aadb33SDmitri Tikhonov    [LSQLM_FRAME_WRITER]= "frame-writer",
1225392f7a3SLiteSpeed Tech    [LSQLM_MINI_CONN]   = "mini-conn",
1235392f7a3SLiteSpeed Tech    [LSQLM_TOKGEN]      = "tokgen",
12450aadb33SDmitri Tikhonov    [LSQLM_ENG_HIST]    = "eng-hist",
12550aadb33SDmitri Tikhonov    [LSQLM_SPI]         = "spi",
126fbc6cc04SDmitri Tikhonov    [LSQLM_HPI]         = "hpi",
12750aadb33SDmitri Tikhonov    [LSQLM_DI]          = "di",
1285392f7a3SLiteSpeed Tech    [LSQLM_PRQ]         = "prq",
12950aadb33SDmitri Tikhonov    [LSQLM_PACER]       = "pacer",
1303b55e6aeSDmitri Tikhonov    [LSQLM_HTTP1X]      = "http1x",
13155cd0b38SDmitri Tikhonov    [LSQLM_QLOG]        = "qlog",
1325392f7a3SLiteSpeed Tech    [LSQLM_TRAPA]       = "trapa",
1335392f7a3SLiteSpeed Tech    [LSQLM_PURGA]       = "purga",
1345392f7a3SLiteSpeed Tech    [LSQLM_HCSI_READER] = "hcsi-reader",
1355392f7a3SLiteSpeed Tech    [LSQLM_HCSO_WRITER] = "hcso-writer",
1365392f7a3SLiteSpeed Tech    [LSQLM_QENC_HDL]    = "qenc-hdl",
1375392f7a3SLiteSpeed Tech    [LSQLM_QDEC_HDL]    = "qdec-hdl",
1385392f7a3SLiteSpeed Tech    [LSQLM_QPACK_ENC]    = "qpack-enc",
1395392f7a3SLiteSpeed Tech    [LSQLM_QPACK_DEC]    = "qpack-dec",
1405392f7a3SLiteSpeed Tech    [LSQLM_PRIO]        = "prio",
1415392f7a3SLiteSpeed Tech    [LSQLM_BW_SAMPLER]  = "bw-sampler",
142b8fa6195SDmitri Tikhonov    [LSQLM_PACKET_RESIZE] = "packet-resize",
14350aadb33SDmitri Tikhonov};
14450aadb33SDmitri Tikhonov
14550aadb33SDmitri Tikhonovconst char *const lsq_loglevel2str[N_LSQUIC_LOG_LEVELS] = {
14650aadb33SDmitri Tikhonov    [LSQ_LOG_ALERT]   =  "ALERT",
14750aadb33SDmitri Tikhonov    [LSQ_LOG_CRIT]    =  "CRIT",
14850aadb33SDmitri Tikhonov    [LSQ_LOG_DEBUG]   =  "DEBUG",
14950aadb33SDmitri Tikhonov    [LSQ_LOG_EMERG]   =  "EMERG",
15050aadb33SDmitri Tikhonov    [LSQ_LOG_ERROR]   =  "ERROR",
15150aadb33SDmitri Tikhonov    [LSQ_LOG_INFO]    =  "INFO",
15250aadb33SDmitri Tikhonov    [LSQ_LOG_NOTICE]  =  "NOTICE",
15350aadb33SDmitri Tikhonov    [LSQ_LOG_WARN]    =  "WARN",
15450aadb33SDmitri Tikhonov};
15550aadb33SDmitri Tikhonov
15650aadb33SDmitri Tikhonov
157b93f59beSBob Perper#ifdef WIN32
158560db45bSDmitri Tikhonov#define DELTA_EPOCH_IN_TICKS  116444736000000000Ui64
159b93f59beSBob Perperstruct timezone
160b93f59beSBob Perper{
161ab5c8df2SBob Perper    time_t tz_minuteswest;         /* minutes W of Greenwich */
162ab5c8df2SBob Perper    time_t tz_dsttime;             /* type of dst correction */
163b93f59beSBob Perper};
164b93f59beSBob Perper
165b93f59beSBob Perperstatic int
166b93f59beSBob Perpergettimeofday (struct timeval *tv, struct timezone *tz)
167b93f59beSBob Perper{
168b93f59beSBob Perper    FILETIME ft;
169560db45bSDmitri Tikhonov    uint64_t tmpres;
170b93f59beSBob Perper    static int tzflag;
171b93f59beSBob Perper
172b93f59beSBob Perper    if (NULL != tv)
173b93f59beSBob Perper    {
174b93f59beSBob Perper        GetSystemTimeAsFileTime(&ft);
175b93f59beSBob Perper
176560db45bSDmitri Tikhonov        tmpres = ((uint64_t) ft.dwHighDateTime << 32)
177560db45bSDmitri Tikhonov               | (ft.dwLowDateTime);
178b93f59beSBob Perper
179560db45bSDmitri Tikhonov        tmpres -= DELTA_EPOCH_IN_TICKS;
180560db45bSDmitri Tikhonov        tv->tv_sec = tmpres / 10000000;
181560db45bSDmitri Tikhonov        tv->tv_usec = tmpres % 1000000;
182b93f59beSBob Perper    }
183b93f59beSBob Perper
184b93f59beSBob Perper    if (NULL != tz)
185b93f59beSBob Perper    {
186b93f59beSBob Perper        if (!tzflag)
187b93f59beSBob Perper        {
188b93f59beSBob Perper            _tzset();
189b93f59beSBob Perper            tzflag++;
190b93f59beSBob Perper        }
191b93f59beSBob Perper        tz->tz_minuteswest = _timezone / 60;
192b93f59beSBob Perper        tz->tz_dsttime = _daylight;
193b93f59beSBob Perper    }
194b93f59beSBob Perper
195b93f59beSBob Perper    return 0;
196b93f59beSBob Perper}
197b93f59beSBob Perper#endif
198b93f59beSBob Perper
199b93f59beSBob Perper
2005392f7a3SLiteSpeed Techstatic size_t
2015392f7a3SLiteSpeed Techprint_timestamp (char *buf, size_t max)
20250aadb33SDmitri Tikhonov{
20350aadb33SDmitri Tikhonov    struct tm tm;
20450aadb33SDmitri Tikhonov    struct timeval tv;
2055392f7a3SLiteSpeed Tech    size_t len = 0;
2065392f7a3SLiteSpeed Tech
20750aadb33SDmitri Tikhonov    gettimeofday(&tv, NULL);
208ab5c8df2SBob Perper#ifdef WIN32
209ab5c8df2SBob Perper    {
2107b1586ddSDmitri Tikhonov        time_t t = tv.tv_sec;
211560db45bSDmitri Tikhonov#ifndef NDEBUG
2127b1586ddSDmitri Tikhonov        errno_t e =
213560db45bSDmitri Tikhonov#endif
2147b1586ddSDmitri Tikhonov	localtime_s(&tm, &t);
215560db45bSDmitri Tikhonov	assert(!e);
216ab5c8df2SBob Perper    }
217ab5c8df2SBob Perper#else
21850aadb33SDmitri Tikhonov    localtime_r(&tv.tv_sec, &tm);
219ab5c8df2SBob Perper#endif
220bfc7bfd8SDmitri Tikhonov    if (g_llts == LLTS_YYYYMMDD_HHMMSSUS)
2215392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%04d-%02d-%02d %02d:%02d:%02d.%06d ",
222bfc7bfd8SDmitri Tikhonov            tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
223bfc7bfd8SDmitri Tikhonov            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec));
224bfc7bfd8SDmitri Tikhonov    else if (g_llts == LLTS_YYYYMMDD_HHMMSSMS)
2255392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%04d-%02d-%02d %02d:%02d:%02d.%03d ",
22650aadb33SDmitri Tikhonov            tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
22750aadb33SDmitri Tikhonov            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec / 1000));
22850aadb33SDmitri Tikhonov    else if (g_llts == LLTS_HHMMSSMS)
2295392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%02d:%02d:%02d.%03d ",
2305392f7a3SLiteSpeed Tech            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec / 1000));
23150aadb33SDmitri Tikhonov    else if (g_llts == LLTS_HHMMSSUS)
2325392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%02d:%02d:%02d.%06d ",
2335392f7a3SLiteSpeed Tech            tm.tm_hour, tm.tm_min, tm.tm_sec, (int) tv.tv_usec);
23450aadb33SDmitri Tikhonov    else if (g_llts == LLTS_CHROMELIKE)
2355392f7a3SLiteSpeed Tech        len = snprintf(buf, max, "%02d%02d/%02d%02d%02d.%06d ",
2365392f7a3SLiteSpeed Tech            tm.tm_mon + 1, tm.tm_mday,tm.tm_hour, tm.tm_min,
2375392f7a3SLiteSpeed Tech            tm.tm_sec, (int) tv.tv_usec);
2385392f7a3SLiteSpeed Tech    return len;
23950aadb33SDmitri Tikhonov}
24050aadb33SDmitri Tikhonov
24150aadb33SDmitri Tikhonov
24250aadb33SDmitri Tikhonovvoid
24350aadb33SDmitri Tikhonovlsquic_logger_log3 (enum lsq_log_level log_level,
24450aadb33SDmitri Tikhonov                    enum lsquic_logger_module module,
2455392f7a3SLiteSpeed Tech                    const lsquic_cid_t *conn_id, lsquic_stream_id_t stream_id,
2465392f7a3SLiteSpeed Tech                    const char *fmt, ...)
24750aadb33SDmitri Tikhonov{
24850aadb33SDmitri Tikhonov    const int saved_errno = errno;
2495392f7a3SLiteSpeed Tech    char cidbuf_[MAX_CID_LEN * 2 + 1];
2505392f7a3SLiteSpeed Tech    size_t len = 0;
25155f8042dSDmitri Tikhonov    int lb;
2525392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
2535392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
25450aadb33SDmitri Tikhonov
25550aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
2565392f7a3SLiteSpeed Tech    {
2575392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
2585392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
2595392f7a3SLiteSpeed Tech            goto end;
2605392f7a3SLiteSpeed Tech        len += lb;
2615392f7a3SLiteSpeed Tech    }
2625392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] [QUIC:%"CID_FMT"-%"PRIu64"] %s: ",
2635392f7a3SLiteSpeed Tech        lsq_loglevel2str[log_level], CID_BITS(conn_id),
2645392f7a3SLiteSpeed Tech        stream_id, lsqlm_to_str[module]);
2655392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
2665392f7a3SLiteSpeed Tech        goto end;
2675392f7a3SLiteSpeed Tech    len += lb;
26850aadb33SDmitri Tikhonov    va_list ap;
26950aadb33SDmitri Tikhonov    va_start(ap, fmt);
2705392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
271a0e1aeeeSDmitri Tikhonov    va_end(ap);
27255f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
27355f8042dSDmitri Tikhonov    {
27455f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
27555f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
27655f8042dSDmitri Tikhonov    }
2775392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
2785392f7a3SLiteSpeed Tech        goto end;
2795392f7a3SLiteSpeed Tech    len += lb;
2805392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
2815392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
2825392f7a3SLiteSpeed Tech        goto end;
2835392f7a3SLiteSpeed Tech    len += lb;
2845392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
2855392f7a3SLiteSpeed Techend:
28650aadb33SDmitri Tikhonov    errno = saved_errno;
28750aadb33SDmitri Tikhonov}
28850aadb33SDmitri Tikhonov
28950aadb33SDmitri Tikhonov
29050aadb33SDmitri Tikhonovvoid
29150aadb33SDmitri Tikhonovlsquic_logger_log2 (enum lsq_log_level log_level,
29250aadb33SDmitri Tikhonov                    enum lsquic_logger_module module,
2935392f7a3SLiteSpeed Tech                    const struct lsquic_cid *conn_id, const char *fmt, ...)
29450aadb33SDmitri Tikhonov{
29550aadb33SDmitri Tikhonov    const int saved_errno = errno;
2965392f7a3SLiteSpeed Tech    char cidbuf_[MAX_CID_LEN * 2 + 1];
2975392f7a3SLiteSpeed Tech    size_t len = 0;
29855f8042dSDmitri Tikhonov    int lb;
2995392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
3005392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
30150aadb33SDmitri Tikhonov
30250aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
3035392f7a3SLiteSpeed Tech    {
3045392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
3055392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
3065392f7a3SLiteSpeed Tech            goto end;
3075392f7a3SLiteSpeed Tech        len += lb;
3085392f7a3SLiteSpeed Tech    }
30950aadb33SDmitri Tikhonov
3105392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] [QUIC:%"CID_FMT"] %s: ",
3115392f7a3SLiteSpeed Tech        lsq_loglevel2str[log_level], CID_BITS(conn_id), lsqlm_to_str[module]);
3125392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3135392f7a3SLiteSpeed Tech        goto end;
3145392f7a3SLiteSpeed Tech    len += lb;
31550aadb33SDmitri Tikhonov    va_list ap;
31650aadb33SDmitri Tikhonov    va_start(ap, fmt);
3175392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
318a0e1aeeeSDmitri Tikhonov    va_end(ap);
31955f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
32055f8042dSDmitri Tikhonov    {
32155f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
32255f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
32355f8042dSDmitri Tikhonov    }
3245392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3255392f7a3SLiteSpeed Tech        goto end;
3265392f7a3SLiteSpeed Tech    len += lb;
3275392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
3285392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3295392f7a3SLiteSpeed Tech        goto end;
3305392f7a3SLiteSpeed Tech    len += lb;
3315392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
3325392f7a3SLiteSpeed Techend:
33350aadb33SDmitri Tikhonov    errno = saved_errno;
33450aadb33SDmitri Tikhonov}
33550aadb33SDmitri Tikhonov
33650aadb33SDmitri Tikhonov
33750aadb33SDmitri Tikhonovvoid
33850aadb33SDmitri Tikhonovlsquic_logger_log1 (enum lsq_log_level log_level,
33950aadb33SDmitri Tikhonov                    enum lsquic_logger_module module,
34050aadb33SDmitri Tikhonov                    const char *fmt, ...)
34150aadb33SDmitri Tikhonov{
34250aadb33SDmitri Tikhonov    const int saved_errno = errno;
3435392f7a3SLiteSpeed Tech    size_t len = 0;
34455f8042dSDmitri Tikhonov    int lb;
3455392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
3465392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
34750aadb33SDmitri Tikhonov
34850aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
3495392f7a3SLiteSpeed Tech    {
3505392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
3515392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
3525392f7a3SLiteSpeed Tech            goto end;
3535392f7a3SLiteSpeed Tech        len += lb;
3545392f7a3SLiteSpeed Tech    }
3555392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] %s: ", lsq_loglevel2str[log_level],
35650aadb33SDmitri Tikhonov                                                lsqlm_to_str[module]);
3575392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3585392f7a3SLiteSpeed Tech        goto end;
3595392f7a3SLiteSpeed Tech    len += lb;
36050aadb33SDmitri Tikhonov    va_list ap;
36150aadb33SDmitri Tikhonov    va_start(ap, fmt);
3625392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
363a0e1aeeeSDmitri Tikhonov    va_end(ap);
36455f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
36555f8042dSDmitri Tikhonov    {
36655f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
36755f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
36855f8042dSDmitri Tikhonov    }
3695392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3705392f7a3SLiteSpeed Tech        goto end;
3715392f7a3SLiteSpeed Tech    len += lb;
3725392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
3735392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
3745392f7a3SLiteSpeed Tech        goto end;
3755392f7a3SLiteSpeed Tech    len += lb;
3765392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
3775392f7a3SLiteSpeed Techend:
37850aadb33SDmitri Tikhonov    errno = saved_errno;
37950aadb33SDmitri Tikhonov}
38050aadb33SDmitri Tikhonov
38150aadb33SDmitri Tikhonov
38250aadb33SDmitri Tikhonovvoid
38350aadb33SDmitri Tikhonovlsquic_logger_log0 (enum lsq_log_level log_level, const char *fmt, ...)
38450aadb33SDmitri Tikhonov{
38550aadb33SDmitri Tikhonov    const int saved_errno = errno;
3865392f7a3SLiteSpeed Tech    size_t len = 0;
38755f8042dSDmitri Tikhonov    int lb;
3885392f7a3SLiteSpeed Tech    size_t max = MAX_LINE_LEN;
3895392f7a3SLiteSpeed Tech    char buf[MAX_LINE_LEN];
39050aadb33SDmitri Tikhonov
39150aadb33SDmitri Tikhonov    if (g_llts != LLTS_NONE)
3925392f7a3SLiteSpeed Tech    {
3935392f7a3SLiteSpeed Tech        lb = print_timestamp(buf, max);
3945392f7a3SLiteSpeed Tech        if (FORMAT_PROBLEM(lb, len, max))
3955392f7a3SLiteSpeed Tech            goto end;
3965392f7a3SLiteSpeed Tech        len += lb;
3975392f7a3SLiteSpeed Tech    }
39850aadb33SDmitri Tikhonov
3995392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "[%s] ", lsq_loglevel2str[log_level]);
4005392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
4015392f7a3SLiteSpeed Tech        goto end;
4025392f7a3SLiteSpeed Tech    len += lb;
40350aadb33SDmitri Tikhonov    va_list ap;
40450aadb33SDmitri Tikhonov    va_start(ap, fmt);
4055392f7a3SLiteSpeed Tech    lb = vsnprintf(buf + len, max - len, fmt, ap);
40650aadb33SDmitri Tikhonov    va_end(ap);
40755f8042dSDmitri Tikhonov    if (lb > 0 && (size_t) lb >= max - len && max - len >= TRUNC_SZ)
40855f8042dSDmitri Tikhonov    {
40955f8042dSDmitri Tikhonov        len = max - TRUNC_SZ;
41055f8042dSDmitri Tikhonov        lb = snprintf(buf + max - TRUNC_SZ, TRUNC_SZ, TRUNC_FMT, lb);
41155f8042dSDmitri Tikhonov    }
4125392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
4135392f7a3SLiteSpeed Tech        goto end;
4145392f7a3SLiteSpeed Tech    len += lb;
4155392f7a3SLiteSpeed Tech    lb = snprintf(buf + len, max - len, "\n");
4165392f7a3SLiteSpeed Tech    if (FORMAT_PROBLEM(lb, len, max))
4175392f7a3SLiteSpeed Tech        goto end;
4185392f7a3SLiteSpeed Tech    len += lb;
4195392f7a3SLiteSpeed Tech    logger_if->log_buf(logger_ctx, buf, len);
4205392f7a3SLiteSpeed Techend:
42150aadb33SDmitri Tikhonov    errno = saved_errno;
42250aadb33SDmitri Tikhonov}
42350aadb33SDmitri Tikhonov
42450aadb33SDmitri Tikhonov
42550aadb33SDmitri Tikhonovvoid
42650aadb33SDmitri Tikhonovlsquic_logger_init (const struct lsquic_logger_if *lif, void *lctx,
42750aadb33SDmitri Tikhonov                    unsigned llts)
42850aadb33SDmitri Tikhonov{
42950aadb33SDmitri Tikhonov    logger_if  = lif;
43050aadb33SDmitri Tikhonov    logger_ctx = lctx;
43150aadb33SDmitri Tikhonov    if (llts < N_LLTS)
43250aadb33SDmitri Tikhonov        g_llts = llts;
43350aadb33SDmitri Tikhonov    LSQ_DEBUG("%s called", __func__);
43450aadb33SDmitri Tikhonov}
43550aadb33SDmitri Tikhonov
43650aadb33SDmitri Tikhonov
43750aadb33SDmitri Tikhonovenum lsquic_logger_module
43850aadb33SDmitri Tikhonovlsquic_str_to_logger_module (const char *str)
43950aadb33SDmitri Tikhonov{
44050aadb33SDmitri Tikhonov    enum lsquic_logger_module i;
44150aadb33SDmitri Tikhonov    for (i = 0; i < sizeof(lsqlm_to_str) / sizeof(lsqlm_to_str[0]); ++i)
44250aadb33SDmitri Tikhonov        if (0 == strcasecmp(lsqlm_to_str[i], str))
44350aadb33SDmitri Tikhonov            return i;
44450aadb33SDmitri Tikhonov    return -1;
44550aadb33SDmitri Tikhonov}
44650aadb33SDmitri Tikhonov
44750aadb33SDmitri Tikhonov
44850aadb33SDmitri Tikhonovenum lsq_log_level
44950aadb33SDmitri Tikhonovlsquic_str_to_log_level (const char *str)
45050aadb33SDmitri Tikhonov{
45150aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "emerg"))
45250aadb33SDmitri Tikhonov        return LSQ_LOG_EMERG;
45350aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "alert"))
45450aadb33SDmitri Tikhonov        return LSQ_LOG_ALERT;
45550aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "crit"))
45650aadb33SDmitri Tikhonov        return LSQ_LOG_CRIT;
45750aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "error"))
45850aadb33SDmitri Tikhonov        return LSQ_LOG_ERROR;
45950aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "warn"))
46050aadb33SDmitri Tikhonov        return LSQ_LOG_WARN;
46150aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "notice"))
46250aadb33SDmitri Tikhonov        return LSQ_LOG_NOTICE;
46350aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "info"))
46450aadb33SDmitri Tikhonov        return LSQ_LOG_INFO;
46550aadb33SDmitri Tikhonov    if (0 == strcasecmp(str, "debug"))
46650aadb33SDmitri Tikhonov        return LSQ_LOG_DEBUG;
46750aadb33SDmitri Tikhonov    return -1;
46850aadb33SDmitri Tikhonov}
46950aadb33SDmitri Tikhonov
47050aadb33SDmitri Tikhonov
47150aadb33SDmitri Tikhonovvoid
47250aadb33SDmitri Tikhonovlsquic_log_to_fstream (FILE *file, unsigned llts)
47350aadb33SDmitri Tikhonov{
47450aadb33SDmitri Tikhonov    lsquic_logger_init(&file_logger_if, file, llts);
47550aadb33SDmitri Tikhonov}
47650aadb33SDmitri Tikhonov
47750aadb33SDmitri Tikhonov
47850aadb33SDmitri Tikhonovint
47950aadb33SDmitri Tikhonovlsquic_logger_lopt (const char *optarg_orig)
48050aadb33SDmitri Tikhonov{
48150aadb33SDmitri Tikhonov    char *const optarg = strdup(optarg_orig);
48250aadb33SDmitri Tikhonov    char *mod_str;
48350aadb33SDmitri Tikhonov    int i;
48450aadb33SDmitri Tikhonov    for (i = 0; (mod_str = strtok(i ? NULL : optarg, ",")); ++i) {
48550aadb33SDmitri Tikhonov        char *level_str = strchr(mod_str, '=');
48650aadb33SDmitri Tikhonov        if (!level_str) {
48750aadb33SDmitri Tikhonov            fprintf(stderr, "Invalid module specification `%s'\n", mod_str);
48850aadb33SDmitri Tikhonov            break;
48950aadb33SDmitri Tikhonov        }
49050aadb33SDmitri Tikhonov        *level_str = '\0';
49150aadb33SDmitri Tikhonov        ++level_str;
49250aadb33SDmitri Tikhonov        enum lsquic_logger_module mod = lsquic_str_to_logger_module(mod_str);
49350aadb33SDmitri Tikhonov        if (-1 == (int) mod) {
49450aadb33SDmitri Tikhonov            fprintf(stderr, "`%s' is not a valid module name\n", mod_str);
49550aadb33SDmitri Tikhonov            break;
49650aadb33SDmitri Tikhonov        }
49750aadb33SDmitri Tikhonov        enum lsq_log_level level = lsquic_str_to_log_level(level_str);
49850aadb33SDmitri Tikhonov        if (-1 == (int) level) {
49950aadb33SDmitri Tikhonov            fprintf(stderr, "`%s' is not a valid level\n", level_str);
50050aadb33SDmitri Tikhonov            break;
50150aadb33SDmitri Tikhonov        }
50250aadb33SDmitri Tikhonov        lsq_log_levels[mod] = level;
50350aadb33SDmitri Tikhonov        LSQ_INFO("set %s to %s", mod_str, level_str);
50450aadb33SDmitri Tikhonov    }
50550aadb33SDmitri Tikhonov    free(optarg);
50650aadb33SDmitri Tikhonov    return mod_str == NULL ? 0 : -1;
50750aadb33SDmitri Tikhonov}
50850aadb33SDmitri Tikhonov
50950aadb33SDmitri Tikhonov
51050aadb33SDmitri Tikhonovint
51150aadb33SDmitri Tikhonovlsquic_set_log_level (const char *level_str)
51250aadb33SDmitri Tikhonov{
51350aadb33SDmitri Tikhonov    enum lsq_log_level level;
51450aadb33SDmitri Tikhonov    unsigned i;
51550aadb33SDmitri Tikhonov
51650aadb33SDmitri Tikhonov    level = lsquic_str_to_log_level(level_str);
51750aadb33SDmitri Tikhonov    if ((int) level >= 0)
51850aadb33SDmitri Tikhonov    {
51950aadb33SDmitri Tikhonov        for (i = 0; i < sizeof(lsq_log_levels) / sizeof(lsq_log_levels[0]); ++i)
52050aadb33SDmitri Tikhonov            lsq_log_levels[i] = level;
52150aadb33SDmitri Tikhonov        return 0;
52250aadb33SDmitri Tikhonov    }
52350aadb33SDmitri Tikhonov    else
52450aadb33SDmitri Tikhonov        return -1;
52550aadb33SDmitri Tikhonov}
5265392f7a3SLiteSpeed Tech
5275392f7a3SLiteSpeed Tech
5285392f7a3SLiteSpeed Tech/* `out' must be at least MAX_CID_LEN * 2 + 1 characters long */
5295392f7a3SLiteSpeed Techvoid
5305392f7a3SLiteSpeed Techlsquic_cid2str (const lsquic_cid_t *cid, char *out)
5315392f7a3SLiteSpeed Tech{
5325392f7a3SLiteSpeed Tech    static const char hex[] = "0123456789ABCDEF";
5335392f7a3SLiteSpeed Tech    int i;
5345392f7a3SLiteSpeed Tech
5355392f7a3SLiteSpeed Tech    for (i = 0; i < (int) cid->len; ++i)
5365392f7a3SLiteSpeed Tech    {
5375392f7a3SLiteSpeed Tech        *out++ = hex[ cid->idbuf[i] >> 4 ];
5385392f7a3SLiteSpeed Tech        *out++ = hex[ cid->idbuf[i] & 0xF ];
5395392f7a3SLiteSpeed Tech    }
5405392f7a3SLiteSpeed Tech    *out = '\0';
5415392f7a3SLiteSpeed Tech}
542