/*

 * libwebsockets - small server side websockets and web server implementation

 *

 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#if !defined(_GNU_SOURCE)

#define _GNU_SOURCE

#endif

#include "private-lib-core.h"

/*

 * Normally you don't want this, use lws_sul instead inside the event loop.

 * But sometimes for drivers it makes sense, so there's an internal-only

 * crossplatform api for it.

 */

void

lws_msleep(unsigned int ms)

{

        usleep((unsigned int)(ms * LWS_US_PER_MS));

}

lws_usec_t

lws_now_usecs(void)

{

#if defined(LWS_HAVE_CLOCK_GETTIME)

  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))

    return 0;

  return (((lws_usec_t)ts.tv_sec) * LWS_US_PER_SEC) +

      ((lws_usec_t)ts.tv_nsec / LWS_NS_PER_US);

#else

  struct timeval now;

  gettimeofday(&now, NULL);

  return (((lws_usec_t)now.tv_sec) * LWS_US_PER_SEC) +

      (lws_usec_t)now.tv_usec;

#endif

}

size_t

lws_get_random(struct lws_context *context, void *buf, size_t len)

{

#if defined(__COVERITY__)

  memset(buf, 0, len);

  return len;

#else

  /* coverity[tainted_scalar] */

  return (size_t)read(context->fd_random, (char *)buf, len);

#endif

}

void lwsl_emit_syslog(int level, const char *line)

{

  int syslog_level = LOG_DEBUG;

  switch (level) {

  case LLL_ERR:

    syslog_level = LOG_ERR;

    break;

  case LLL_WARN:

    syslog_level = LOG_WARNING;

    break;

  case LLL_NOTICE:

    syslog_level = LOG_NOTICE;

    break;

  case LLL_INFO:

    syslog_level = LOG_INFO;

    break;

  }

  syslog(syslog_level, "%s", line);

}

int

lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,

      size_t len)

{

  ssize_t n;

  n = write(fd, buf, len);

  if (n < 0 || fsync(fd))

    return 1;

  if (lseek(fd, 0, SEEK_SET) < 0)

    return 1;

  return (size_t)n != len;

}

int

lws_plat_recommended_rsa_bits(void)

{

  return 4096;

}

/*

 * Platform-specific ntpclient server configuration

 */

int

lws_plat_ntpclient_config(struct lws_context *context)

{

#if defined(LWS_HAVE_GETENV)

  char *ntpsrv = getenv("LWS_NTP_SERVER");

  if (ntpsrv && strlen(ntpsrv) < 64) {

    lws_system_blob_t *blob = lws_system_get_blob(context,

                                            LWS_SYSBLOB_TYPE_NTP_SERVER, 0);

    if (!blob)

      return 0;

    lws_system_blob_direct_set(blob, (const uint8_t *)ntpsrv,

              strlen(ntpsrv));

    return 1;

  }

#endif

  return 0;

}