text: /*
   * Copyright (c) 2016-2017, OARC, Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. Neither the name of the copyright holder nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  #ifdef _WINDOWS
  #define WIN32_LEAN_AND_MEAN
  #include <Windows.h>
  #include <assert.h>
  #include <stdint.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <WinSock2.h>
  #include <iphlpapi.h>
  #include <ws2tcpip.h>
  
  #if 0
  #ifndef SOCKET_TYPE 
  #define SOCKET_TYPE SOCKET
  #endif
  #ifndef SOCKET_CLOSE
  #define SOCKET_CLOSE(x) closesocket(x)
  #endif
  #ifndef WSA_START_DATA
  #define WSA_START_DATA WSADATA
  #endif
  #ifndef WSA_START
  #define WSA_START(x, y) WSAStartup((x), (y))
  #endif
  #ifndef WSA_LAST_ERROR
  #define WSA_LAST_ERROR(x)  WSAGetLastError()
  #endif
  #ifndef socklen_t
  #define socklen_t int
  #endif
  #endif
  
  #else  /* Linux */
  #include <netinet/in.h>
  #include <sys/types.h>
  #endif
  
  #ifdef TIME_WITH_SYS_TIME
  #include <sys/time.h>
  #include <time.h>
  #else
  #ifdef HAVE_SYS_TIME_H
  #include <sys/time.h>
  #else
  #include <time.h>
  #endif
  #endif
  
  #ifndef __dnscap_dnscap_common_h
  #define __dnscap_dnscap_common_h
  
  /*
   * setup MY_BPFTIMEVAL as the timeval structure that bpf packets
   * will be assoicated with packets from libpcap
   */
  #ifndef MY_BPFTIMEVAL
  #define MY_BPFTIMEVAL timeval
  #endif
  typedef struct MY_BPFTIMEVAL my_bpftimeval;
  
  /*
   * Structure to contain IP addresses
   */
  typedef struct {
      int af;
      union {
          struct in_addr  a4;
          struct in6_addr a6;
      } u;
  } iaddr;
  
  /*
   * plugins can call the logerr() function in the main dnscap
   * process.
   */
  typedef int logerr_t(const char* fmt, ...);
  
  /*
   * Prototype for the plugin "output" function
   */
  typedef void output_t(const char* descr,
      iaddr                         from,
      iaddr                         to,
      uint8_t                       proto,
      unsigned                      flags,
      unsigned                      sport,
      unsigned                      dport,
      my_bpftimeval                 ts,
      const u_char*                 pkt_copy,
      const unsigned                olen,
      const u_char*                 payload,
      const unsigned                payloadlen);
  
  #define DNSCAP_EXT_IS_RESPONDER 1
  typedef int (*is_responder_t)(iaddr ia);
  
  #define DNSCAP_EXT_IA_STR 2
  typedef const char* (*ia_str_t)(iaddr ia);
  
  #define DNSCAP_OUTPUT_ISFRAG (1 << 0)
  #define DNSCAP_OUTPUT_ISDNS (1 << 1)
  
  #define DIR_INITIATE 0x0001
  #define DIR_RESPONSE 0x0002
  
  #endif /* __dnscap_dnscap_common_h */
  