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// SPDX-License-Identifier: LGPL-2.1
// Copyright (C) 2016-2020, Intel Corporation. All rights reserved.
#include <syslog.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <util/log.h>
void log_syslog(struct log_ctx *ctx, int priority, const char *file, int line,
const char *fn, const char *format, va_list args)
{
vsyslog(priority, format, args);
}
void log_standard(struct log_ctx *ctx, int priority, const char *file, int line,
const char *fn, const char *format, va_list args)
{
if (priority == 6)
vfprintf(stdout, format, args);
else
vfprintf(stderr, format, args);
}
void log_file(struct log_ctx *ctx, int priority, const char *file, int line,
const char *fn, const char *format, va_list args)
{
FILE *f = ctx->log_file;
if (priority != LOG_NOTICE) {
struct timespec ts;
clock_gettime(CLOCK_REALTIME, &ts);
fprintf(f, "[%10ld.%09ld] [%d] ", ts.tv_sec, ts.tv_nsec,
getpid());
}
vfprintf(f, format, args);
fflush(f);
}
void do_log(struct log_ctx *ctx, int priority, const char *file,
int line, const char *fn, const char *format, ...)
{
va_list args;
int errno_save = errno;
va_start(args, format);
ctx->log_fn(ctx, priority, file, line, fn, format, args);
va_end(args);
errno = errno_save;
}
static void log_stderr(struct log_ctx *ctx, int priority, const char *file,
int line, const char *fn, const char *format, va_list args)
{
fprintf(stderr, "%s: %s: ", ctx->owner, fn);
vfprintf(stderr, format, args);
}
static int log_priority(const char *priority)
{
char *endptr;
int prio;
prio = strtol(priority, &endptr, 10);
if (endptr[0] == '\0' || isspace(endptr[0]))
return prio;
if (strncmp(priority, "err", 3) == 0)
return LOG_ERR;
if (strncmp(priority, "info", 4) == 0)
return LOG_INFO;
if (strncmp(priority, "debug", 5) == 0)
return LOG_DEBUG;
if (strncmp(priority, "notice", 6) == 0)
return LOG_NOTICE;
return 0;
}
void log_init(struct log_ctx *ctx, const char *owner, const char *log_env)
{
const char *env;
ctx->owner = owner;
ctx->log_fn = log_stderr;
ctx->log_priority = LOG_ERR;
/* environment overwrites config */
env = secure_getenv(log_env);
if (env != NULL)
ctx->log_priority = log_priority(env);
}
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