mirror of
https://github.com/tmate-io/tmate-ssh-server.git
synced 2020-11-18 19:53:51 -08:00
146 lines
2.8 KiB
C
146 lines
2.8 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <errno.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 <time.h>
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#include <unistd.h>
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#include "tmux.h"
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#include "tmate.h"
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FILE *log_file;
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static void log_event_cb(int, const char *);
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static void log_vwrite(const char *, va_list);
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static int log_level;
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char *log_prefix;
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static void
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log_event_cb(__unused int severity, const char *msg)
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{
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log_debug("%s", msg);
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}
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/* Increment log level. */
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void
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log_add_level(void)
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{
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log_level++;
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}
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/* Get log level. */
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int
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log_get_level(void)
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{
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return log_level;
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}
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void init_logging(int _log_level)
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{
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log_level = _log_level;
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log_prefix = xstrdup("");
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log_file = fdopen(dup(STDERR_FILENO), "a");
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if (!log_file)
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exit(1);
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event_set_log_callback(log_event_cb);
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}
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void set_log_prefix(char *_log_prefix)
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{
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free(log_prefix);
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log_prefix = xstrdup(_log_prefix);
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}
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/* Write a log message. */
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__attribute__((__format__(__printf__, 1, 0)))
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static void
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log_vwrite(const char *msg, va_list ap)
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{
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char *fmt, *out;
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struct timeval tv;
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if (log_file == NULL)
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return;
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if (vasprintf(&fmt, msg, ap) == -1)
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exit(1);
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if (stravis(&out, fmt, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL) == -1)
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exit(1);
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if (fprintf(log_file, "%s%s\n", log_prefix, out) == -1)
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exit(1);
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fflush(log_file);
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free(out);
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free(fmt);
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}
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void
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log_emit(int level, const char *msg, ...)
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{
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va_list ap;
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if (log_level < level)
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return;
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va_start(ap, msg);
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log_vwrite(msg, ap);
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va_end(ap);
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}
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/* Log a critical error with error string and die. */
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__attribute__((__format__(__printf__, 1, 0)))
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__dead void
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fatal(const char *msg, ...)
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{
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char *fmt;
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va_list ap;
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va_start(ap, msg);
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if (asprintf(&fmt, "fatal: %s: %s", msg, strerror(errno)) == -1)
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exit(1);
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msg = fmt;
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log_vwrite(msg, ap);
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exit(1);
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}
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/* Log a critical error and die. */
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__attribute__((__format__(__printf__, 1, 0)))
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__dead void
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fatalx(const char *msg, ...)
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{
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char *fmt;
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va_list ap;
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va_start(ap, msg);
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if (asprintf(&fmt, "fatal: %s", msg) == -1)
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exit(1);
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msg = fmt;
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log_vwrite(msg, ap);
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exit(1);
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}
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