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org-hyperion-cules/tuntap.h
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mcisho c607ff54bc Prevent build failure on Windows
2025-09-06 16:58:55 +02:00

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/* TUNTAP.H (C) Copyright James A. Pierson, 2002-2012 */
/* (C) Copyright "Fish" (David B. Trout), 2002-2012 */
/* Hercules - TUN/TAP Abstraction Layer */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
#ifndef __TUNTAP_H_
#define __TUNTAP_H_
#include "hercules.h"
#if !defined( OPTION_W32_CTCI )
#include "hifr.h" // struct in6_ifreq, struct hifr
#else
#include "tt32if.h" // struct if_req
#include "hifr.h" // struct in6_ifreq, struct hifr
#include "tt32api.h" // struct tt32ctl
#endif
#if !defined( OPTION_W32_CTCI )
// ====================================================================
// TunTap ioctl codes and Standard and TUNSETIFF ifr interface flags
// ====================================================================
#if defined( __APPLE__ ) || defined( FREEBSD_OR_NETBSD )
#define HERCTUN_DEV "/dev/tun" // Default TUN/TAP char dev
#else
#define HERCTUN_DEV "/dev/net/tun" // Default TUN/TAP char dev
#endif
#if !defined(HAVE_LINUX_IF_TUN_H)
/* tuntap ioctl defines */
#define TUNSETNOCSUM _IOW('T', 200, int)
#define TUNSETDEBUG _IOW('T', 201, int)
#define TUNSETIFF _IOW('T', 202, int)
#define TUNSETPERSIST _IOW('T', 203, int)
#define TUNSETOWNER _IOW('T', 204, int)
/* tuntap TUNSETIFF ifr flags */
#define IFF_TUN 0x0001
#define IFF_TAP 0x0002
#define IFF_NO_PI 0x1000 /* Don't provide packet info */
#define IFF_ONE_QUEUE 0x2000 /* Use only one packet queue */
#endif // !defined(HAVE_LINUX_IF_TUN_H)
/* Passed from ctc_ctci to tuntap to indicate that the interface */
/* is configured and that only the interface name is to be set. */
#define IFF_NO_HERCIFC 0x10000
#if !defined(HAVE_NET_IF_H)
/* Standard interface flags. */
#define IFF_UP 0x1 /* interface is up */
#define IFF_BROADCAST 0x2 /* broadcast address valid */
#define IFF_DEBUG 0x4 /* Turn on debugging. */
#define IFF_LOOPBACK 0x8 /* is a loopback net */
#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
#define IFF_RUNNING 0x40 /* resources allocated */
#define IFF_PROMISC 0x100 /* receive all packets */
#define IFF_MULTICAST 0x1000 /* Supports multicast */
#elif !defined(IFF_PROMISC)
#define IFF_PROMISC 0x100 /* required by qeth.h */
#endif // !defined(HAVE_NET_IF_H)
#endif // !defined( OPTION_W32_CTCI )
// ====================================================================
// Declarations
// ====================================================================
//
// Create TUN/TAP Interface
//
extern int TUNTAP_CreateInterface ( char* pszTUNDevice,
int iFlags,
int* pfd,
char* pszNetDevName,
int* pinternal );
//
// TUNTAP_CreateInterface flag: open as SOCKET (CTCI-WIN v3.3+ only)
//
#if defined( OPTION_W32_CTCI )
#define IFF_OSOCK _O_TT32NOTIFY
#else
#define IFF_OSOCK 0
#endif
//
// Configure TUN/TAP Interface
//
#ifdef OPTION_TUNTAP_CLRIPADDR
extern int TUNTAP_ClrIPAddr ( char* pszNetDevName );
#endif
extern int TUNTAP_SetIPAddr ( char* pszNetDevName,
char* pszIPAddr );
extern int TUNTAP_SetDestAddr ( char* pszNetDevName,
char* pszDestAddr );
#ifdef OPTION_TUNTAP_SETNETMASK
extern int TUNTAP_SetNetMask ( char* pszNetDevName,
char* pszNetMask );
#endif
#ifdef OPTION_TUNTAP_SETBRDADDR
extern int TUNTAP_SetBCastAddr ( char* pszNetDevName,
char* pszBCastAddr );
#endif
extern int TUNTAP_SetIPAddr6 ( char* pszNetDevName,
char* pszIPAddr6,
char* pszPrefixLen6 );
extern int TUNTAP_GetMTU ( char* pszNetDevName,
char** ppszMTU );
extern int TUNTAP_SetMTU ( char* pszNetDevName,
char* pszMTU );
extern int TUNTAP_GetMACAddr ( char* pszNetDevName,
char** ppszMACAddr );
#ifdef OPTION_TUNTAP_SETMACADDR
extern int TUNTAP_SetMACAddr ( char* pszNetDevName,
char* pszMACAddr );
#endif
extern int TUNTAP_SetFlags ( char* pszNetDevName,
int iFlags );
extern int TUNTAP_GetFlags ( char* pszNetDevName,
int* piFlags );
#ifdef OPTION_TUNTAP_DELADD_ROUTES
extern int TUNTAP_AddRoute ( char* pszNetDevName,
char* pszDestAddr,
char* pszNetMask,
char* pszGWAddr,
int iFlags );
extern int TUNTAP_DelRoute ( char* pszNetDevName,
char* pszDestAddr,
char* pszNetMask,
char* pszGWAddr,
int iFlags );
#endif
#if defined(__FreeBSD__)
extern int TUNTAP_Close ( int fd,
int internal );
#endif
#if defined( OPTION_W32_CTCI ) // CTCI-WIN v3.7.0 or greater
#if defined( TT32QIFDSTADDRS ) // CTCI-WIN v3.7.0 or greater
extern int TT32_AddIPAddr ( int fd, BYTE* ipv4addr );
extern int TT32_DelIPAddr ( int fd, BYTE* ipv4addr );
extern int TT32_QryIPAddrs( int fd, BYTE* ipv4addrs ); // >= 256 byte buffer
#else
static inline int TT32_AddIPAddr ( int fd, BYTE* ipv4addr )
{ UNREFERENCED( fd ); UNREFERENCED( ipv4addr ); return -1; }
static inline int TT32_DelIPAddr ( int fd, BYTE* ipv4addr )
{ UNREFERENCED( fd ); UNREFERENCED( ipv4addr ); return -1; }
static inline int TT32_QryIPAddrs( int fd, BYTE* ipv4addrs )
{ UNREFERENCED( fd ); UNREFERENCED( ipv4addrs ); return -1; }
#endif
#endif
// (functions used by *BOTH* Win32 *and* NON-Win32 platforms)
extern void build_herc_iface_mac ( BYTE* out_mac, const BYTE* in_ip );
extern int ParseMAC( char* pszMACAddr, BYTE* pbMACAddr );
extern int FormatMAC( char** ppszMACAddr, BYTE* mac );
extern void packet_trace( BYTE *addr, int len, BYTE dir );
extern void net_data_trace( DEVBLK* dev, BYTE* addr, int len, BYTE dir, BYTE sev, char* what, U32 opt );
// ====================================================================
// Helper Macros
// ====================================================================
#if defined( HAVE_STRUCT_SOCKADDR_IN_SIN_LEN )
#define set_sockaddr_in_sin_len( sockaddr_in_ptr ) \
(sockaddr_in_ptr)->sin_len = sizeof( struct sockaddr_in )
#else
#define set_sockaddr_in_sin_len( sockaddr_in_ptr )
#endif
#if defined( OPTION_W32_CTCI )
#define TUNTAP_Open tt32_open
#define TUNTAP_Close(f,n) tt32_close(f) // The second parameter - creation status - is currently only used on FreeBSD.
#define TUNTAP_Read tt32_read
#define TUNTAP_Write tt32_write
#define TUNTAP_BegMWrite(f,n) tt32_beg_write_multi(f,n)
#define TUNTAP_EndMWrite(f) tt32_end_write_multi(f)
#define TUNTAP_IOCtl tt32_ioctl
#else // !defined( OPTION_W32_CTCI )
#define TUNTAP_Open open
#define TUNTAP_Read read
#define TUNTAP_Write write
#define TUNTAP_BegMWrite(f,n)
#define TUNTAP_EndMWrite(f)
#define TUNTAP_IOCtl ioctl
#if !defined(__FreeBSD__)
#define TUNTAP_Close(a, b) close(a) // The second parameter - creation status - is currently only used on FreeBSD.
#endif // !defined (__FreeBSD__)
#endif // defined( OPTION_W32_CTCI )
#endif // __TUNTAP_H_
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