329 lines
8.7 KiB
C
329 lines
8.7 KiB
C
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/* Copyright (c) 2017 LiteSpeed Technologies Inc. See LICENSE. */
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/*
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* LSQUIC Logger implementation.
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*/
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#include <errno.h>
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#include <inttypes.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <time.h>
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#define LSQUIC_LOGGER_MODULE LSQLM_LOGGER /* Quis custodiet ipsos custodes? */
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#include "lsquic_logger.h"
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#include "lsquic.h"
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static enum lsquic_logger_timestamp_style g_llts = LLTS_NONE;
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static int
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null_vprintf (void *ctx, const char *fmt, va_list ap)
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{
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return 0;
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}
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static int
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file_vprintf (void *ctx, const char *fmt, va_list ap)
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{
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return vfprintf((FILE *) ctx, fmt, ap);
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}
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static const struct lsquic_logger_if file_logger_if = {
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.vprintf = file_vprintf,
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};
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static const struct lsquic_logger_if null_logger_if = {
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.vprintf = null_vprintf,
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};
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static void *logger_ctx = NULL;
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static const struct lsquic_logger_if *logger_if = &null_logger_if;
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enum lsq_log_level lsq_log_levels[N_LSQUIC_LOGGER_MODULES] = {
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[LSQLM_NOMODULE] = LSQ_LOG_WARN,
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[LSQLM_LOGGER] = LSQ_LOG_WARN,
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[LSQLM_EVENT] = LSQ_LOG_WARN,
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[LSQLM_ENGINE] = LSQ_LOG_WARN,
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[LSQLM_CONN] = LSQ_LOG_WARN,
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[LSQLM_RECHIST] = LSQ_LOG_WARN,
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[LSQLM_STREAM] = LSQ_LOG_WARN,
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[LSQLM_PARSE] = LSQ_LOG_WARN,
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[LSQLM_CFCW] = LSQ_LOG_WARN,
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[LSQLM_SFCW] = LSQ_LOG_WARN,
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[LSQLM_SENDCTL] = LSQ_LOG_WARN,
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[LSQLM_ALARMSET] = LSQ_LOG_WARN,
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[LSQLM_CRYPTO] = LSQ_LOG_WARN,
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[LSQLM_HANDSHAKE] = LSQ_LOG_WARN,
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[LSQLM_HSK_ADAPTER] = LSQ_LOG_WARN,
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[LSQLM_CUBIC] = LSQ_LOG_WARN,
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[LSQLM_HEADERS] = LSQ_LOG_WARN,
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[LSQLM_FRAME_READER]= LSQ_LOG_WARN,
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[LSQLM_FRAME_WRITER]= LSQ_LOG_WARN,
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[LSQLM_CONN_HASH] = LSQ_LOG_WARN,
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[LSQLM_ENG_HIST] = LSQ_LOG_WARN,
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[LSQLM_SPI] = LSQ_LOG_WARN,
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[LSQLM_DI] = LSQ_LOG_WARN,
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[LSQLM_PACER] = LSQ_LOG_WARN,
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};
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const char *const lsqlm_to_str[N_LSQUIC_LOGGER_MODULES] = {
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[LSQLM_NOMODULE] = "",
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[LSQLM_LOGGER] = "logger",
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[LSQLM_EVENT] = "event",
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[LSQLM_ENGINE] = "engine",
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[LSQLM_CONN] = "conn",
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[LSQLM_RECHIST] = "rechist",
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[LSQLM_STREAM] = "stream",
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[LSQLM_PARSE] = "parse",
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[LSQLM_CFCW] = "cfcw",
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[LSQLM_SFCW] = "sfcw",
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[LSQLM_SENDCTL] = "sendctl",
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[LSQLM_ALARMSET] = "alarmset",
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[LSQLM_CRYPTO] = "crypto",
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[LSQLM_HANDSHAKE] = "handshake",
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[LSQLM_HSK_ADAPTER] = "hsk-adapter",
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[LSQLM_CUBIC] = "cubic",
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[LSQLM_HEADERS] = "headers",
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[LSQLM_FRAME_READER]= "frame-reader",
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[LSQLM_FRAME_WRITER]= "frame-writer",
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[LSQLM_CONN_HASH] = "conn-hash",
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[LSQLM_ENG_HIST] = "eng-hist",
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[LSQLM_SPI] = "spi",
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[LSQLM_DI] = "di",
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[LSQLM_PACER] = "pacer",
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};
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const char *const lsq_loglevel2str[N_LSQUIC_LOG_LEVELS] = {
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[LSQ_LOG_ALERT] = "ALERT",
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[LSQ_LOG_CRIT] = "CRIT",
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[LSQ_LOG_DEBUG] = "DEBUG",
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[LSQ_LOG_EMERG] = "EMERG",
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[LSQ_LOG_ERROR] = "ERROR",
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[LSQ_LOG_INFO] = "INFO",
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[LSQ_LOG_NOTICE] = "NOTICE",
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[LSQ_LOG_WARN] = "WARN",
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};
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static void
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lsquic_printf (const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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logger_if->vprintf(logger_ctx, fmt, ap);
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va_end(ap);
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}
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static void
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print_timestamp (void)
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{
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struct tm tm;
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struct timeval tv;
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gettimeofday(&tv, NULL);
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localtime_r(&tv.tv_sec, &tm);
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if (g_llts == LLTS_YYYYMMDD_HHMMSSMS)
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lsquic_printf("%04d-%02d-%02d %02d:%02d:%02d.%03d ",
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tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
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tm.tm_hour, tm.tm_min, tm.tm_sec, (int) (tv.tv_usec / 1000));
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else if (g_llts == LLTS_HHMMSSMS)
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lsquic_printf("%02d:%02d:%02d.%03d ", tm.tm_hour, tm.tm_min,
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tm.tm_sec, (int) (tv.tv_usec / 1000));
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else if (g_llts == LLTS_HHMMSSUS)
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lsquic_printf("%02d:%02d:%02d.%06d ", tm.tm_hour, tm.tm_min,
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tm.tm_sec, (int) tv.tv_usec);
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else if (g_llts == LLTS_CHROMELIKE)
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lsquic_printf("%02d%02d/%02d%02d%02d.%06d ", tm.tm_mon + 1,
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tm.tm_mday,tm.tm_hour, tm.tm_min, tm.tm_sec, (int) tv.tv_usec);
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}
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void
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lsquic_logger_log3 (enum lsq_log_level log_level,
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enum lsquic_logger_module module,
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uint64_t conn_id, uint32_t stream_id, const char *fmt, ...)
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{
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const int saved_errno = errno;
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if (g_llts != LLTS_NONE)
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print_timestamp();
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lsquic_printf("[%s] [QUIC:%"PRIu64"-%"PRIu32"] %s: ",
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lsq_loglevel2str[log_level], conn_id, stream_id, lsqlm_to_str[module]);
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va_list ap;
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va_start(ap, fmt);
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logger_if->vprintf(logger_ctx, fmt, ap);
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va_end(ap);
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lsquic_printf("\n");
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errno = saved_errno;
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}
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void
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lsquic_logger_log2 (enum lsq_log_level log_level,
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enum lsquic_logger_module module,
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uint64_t conn_id, const char *fmt, ...)
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{
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const int saved_errno = errno;
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if (g_llts != LLTS_NONE)
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print_timestamp();
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lsquic_printf("[%s] [QUIC:%"PRIu64"] %s: ",
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lsq_loglevel2str[log_level], conn_id, lsqlm_to_str[module]);
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va_list ap;
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va_start(ap, fmt);
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logger_if->vprintf(logger_ctx, fmt, ap);
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va_end(ap);
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lsquic_printf("\n");
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errno = saved_errno;
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}
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void
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lsquic_logger_log1 (enum lsq_log_level log_level,
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enum lsquic_logger_module module,
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const char *fmt, ...)
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{
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const int saved_errno = errno;
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if (g_llts != LLTS_NONE)
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print_timestamp();
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lsquic_printf("[%s] %s: ", lsq_loglevel2str[log_level],
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lsqlm_to_str[module]);
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va_list ap;
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va_start(ap, fmt);
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logger_if->vprintf(logger_ctx, fmt, ap);
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va_end(ap);
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lsquic_printf("\n");
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errno = saved_errno;
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}
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void
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lsquic_logger_log0 (enum lsq_log_level log_level, const char *fmt, ...)
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{
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const int saved_errno = errno;
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if (g_llts != LLTS_NONE)
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print_timestamp();
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lsquic_printf("[%s] ", lsq_loglevel2str[log_level]);
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va_list ap;
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va_start(ap, fmt);
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logger_if->vprintf(logger_ctx, fmt, ap);
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va_end(ap);
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lsquic_printf("\n");
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errno = saved_errno;
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}
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void
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lsquic_logger_init (const struct lsquic_logger_if *lif, void *lctx,
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unsigned llts)
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{
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logger_if = lif;
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logger_ctx = lctx;
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if (llts < N_LLTS)
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g_llts = llts;
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LSQ_DEBUG("%s called", __func__);
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}
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enum lsquic_logger_module
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lsquic_str_to_logger_module (const char *str)
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{
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enum lsquic_logger_module i;
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for (i = 0; i < sizeof(lsqlm_to_str) / sizeof(lsqlm_to_str[0]); ++i)
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if (0 == strcasecmp(lsqlm_to_str[i], str))
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return i;
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return -1;
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}
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enum lsq_log_level
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lsquic_str_to_log_level (const char *str)
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{
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if (0 == strcasecmp(str, "emerg"))
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return LSQ_LOG_EMERG;
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if (0 == strcasecmp(str, "alert"))
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return LSQ_LOG_ALERT;
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if (0 == strcasecmp(str, "crit"))
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return LSQ_LOG_CRIT;
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if (0 == strcasecmp(str, "error"))
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return LSQ_LOG_ERROR;
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if (0 == strcasecmp(str, "warn"))
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return LSQ_LOG_WARN;
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if (0 == strcasecmp(str, "notice"))
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return LSQ_LOG_NOTICE;
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if (0 == strcasecmp(str, "info"))
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return LSQ_LOG_INFO;
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if (0 == strcasecmp(str, "debug"))
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return LSQ_LOG_DEBUG;
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return -1;
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}
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void
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lsquic_log_to_fstream (FILE *file, unsigned llts)
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{
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lsquic_logger_init(&file_logger_if, file, llts);
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}
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int
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lsquic_logger_lopt (const char *optarg_orig)
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{
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char *const optarg = strdup(optarg_orig);
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char *mod_str;
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int i;
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for (i = 0; (mod_str = strtok(i ? NULL : optarg, ",")); ++i) {
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char *level_str = strchr(mod_str, '=');
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if (!level_str) {
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fprintf(stderr, "Invalid module specification `%s'\n", mod_str);
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break;
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}
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*level_str = '\0';
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++level_str;
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enum lsquic_logger_module mod = lsquic_str_to_logger_module(mod_str);
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if (-1 == (int) mod) {
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fprintf(stderr, "`%s' is not a valid module name\n", mod_str);
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break;
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}
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enum lsq_log_level level = lsquic_str_to_log_level(level_str);
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if (-1 == (int) level) {
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fprintf(stderr, "`%s' is not a valid level\n", level_str);
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break;
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}
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lsq_log_levels[mod] = level;
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LSQ_INFO("set %s to %s", mod_str, level_str);
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}
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free(optarg);
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return mod_str == NULL ? 0 : -1;
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}
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int
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lsquic_set_log_level (const char *level_str)
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{
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enum lsq_log_level level;
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unsigned i;
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level = lsquic_str_to_log_level(level_str);
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if ((int) level >= 0)
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{
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for (i = 0; i < sizeof(lsq_log_levels) / sizeof(lsq_log_levels[0]); ++i)
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lsq_log_levels[i] = level;
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return 0;
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}
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else
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return -1;
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}
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