/**

 * WinPR: Windows Portable Runtime

 * WinPR Logger

 *

 * Copyright © 2015 Thincast Technologies GmbH

 * Copyright © 2015 David FORT <contact@hardening-consulting.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include <winpr/config.h>

#include "SyslogAppender.h"

#include <syslog.h>

typedef struct

{

  wLogAppender common;

} wLogSyslogAppender;

static int getSyslogLevel(DWORD level)

{

  switch (level)

  {

    case WLOG_TRACE:

    case WLOG_DEBUG:

      return LOG_DEBUG;

    case WLOG_INFO:

      return LOG_INFO;

    case WLOG_WARN:

      return LOG_WARNING;

    case WLOG_ERROR:

      return LOG_ERR;

    case WLOG_FATAL:

      return LOG_CRIT;

    case WLOG_OFF:

    default:

      return -1;

  }

}

static BOOL WLog_SyslogAppender_Open(wLog* log, wLogAppender* appender)

{

  return !(!log || !appender);

}

static BOOL WLog_SyslogAppender_Close(wLog* log, wLogAppender* appender)

{

  return !(!log || !appender);

}

static BOOL WLog_SyslogAppender_WriteMessage(wLog* log, wLogAppender* appender,

                                             const wLogMessage* message)

{

  int syslogLevel = 0;

  if (!log || !appender || !message)

    return FALSE;

  syslogLevel = getSyslogLevel(message->Level);

  if (syslogLevel >= 0)

    syslog(syslogLevel, "%s", message->TextString);

  return TRUE;

}

static BOOL WLog_SyslogAppender_WriteDataMessage(wLog* log, wLogAppender* appender,

                                                 const wLogMessage* message)

{

  int syslogLevel = 0;

  if (!log || !appender || !message)

    return FALSE;

  syslogLevel = getSyslogLevel(message->Level);

  if (syslogLevel >= 0)

    syslog(syslogLevel, "skipped data message of %" PRIuz " bytes", message->Length);

  return TRUE;

}

static BOOL WLog_SyslogAppender_WriteImageMessage(wLog* log, wLogAppender* appender,

                                                  const wLogMessage* message)

{

  int syslogLevel = 0;

  if (!log || !appender || !message)

    return FALSE;

  syslogLevel = getSyslogLevel(message->Level);

  if (syslogLevel >= 0)

    syslog(syslogLevel, "skipped image (%" PRIuz "x%" PRIuz "x%" PRIuz ")", message->ImageWidth,

           message->ImageHeight, message->ImageBpp);

  return TRUE;

}

static void WLog_SyslogAppender_Free(wLogAppender* appender)

{

  free(appender);

}

wLogAppender* WLog_SyslogAppender_New(WINPR_ATTR_UNUSED wLog* log)

{

  wLogSyslogAppender* appender = (wLogSyslogAppender*)calloc(1, sizeof(wLogSyslogAppender));

  if (!appender)

    return nullptr;

  appender->common.Type = WLOG_APPENDER_SYSLOG;

  appender->common.Open = WLog_SyslogAppender_Open;

  appender->common.Close = WLog_SyslogAppender_Close;

  appender->common.WriteMessage = WLog_SyslogAppender_WriteMessage;

  appender->common.WriteDataMessage = WLog_SyslogAppender_WriteDataMessage;

  appender->common.WriteImageMessage = WLog_SyslogAppender_WriteImageMessage;

  appender->common.Free = WLog_SyslogAppender_Free;

  return &appender->common;

}