/* $OpenBSD: tls13_error.c,v 1.1 2020/01/20 13:10:37 jsing Exp $ */

/*

 * Copyright (c) 2014,2019 Joel Sing <jsing@openbsd.org>

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

#include <errno.h>

#include "tls13_internal.h"

void

tls13_error_clear(struct tls13_error *error)

{

  error->code = 0;

  error->subcode = 0;

  error->errnum = 0;

  error->file = NULL;

  error->line = 0;

  free(error->msg);

  error->msg = NULL;

}

static int

tls13_error_vset(struct tls13_error *error, int code, int subcode, int errnum,

    const char *file, int line, const char *fmt, va_list ap)

{

  char *errmsg = NULL;

  int rv = -1;

  tls13_error_clear(error);

  error->code = code;

  error->subcode = subcode;

  error->errnum = errnum;

  error->file = file;

  error->line = line;

  if (vasprintf(&errmsg, fmt, ap) == -1) {

    errmsg = NULL;

    goto err;

  }

  if (errnum == -1) {

    error->msg = errmsg;

    return 0;

  }

  if (asprintf(&error->msg, "%s: %s", errmsg, strerror(errnum)) == -1) {

    error->msg = NULL;

    goto err;

  }

  rv = 0;

 err:

  free(errmsg);

  return rv;

}

int

tls13_error_set(struct tls13_error *error, int code, int subcode,

    const char *file, int line, const char *fmt, ...)

{

  va_list ap;

  int errnum, rv;

  errnum = errno;

  va_start(ap, fmt);

  rv = tls13_error_vset(error, code, subcode, errnum, file, line, fmt, ap);

  va_end(ap);

  return (rv);

}

int

tls13_error_setx(struct tls13_error *error, int code, int subcode,

    const char *file, int line, const char *fmt, ...)

{

  va_list ap;

  int rv;

  va_start(ap, fmt);

  rv = tls13_error_vset(error, code, subcode, -1, file, line, fmt, ap);

  va_end(ap);

  return (rv);

}