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https://github.com/SDL-Hercules-390/hyperion.git
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f58812191c
On BSD one opens /dev/tun1. No ioctl() is necessary. Code is modified to select a particular device character file based on the interface number. That is, the interface tun1 is reached by opening /dev/tun1. /dev/tun is a cloning device. Opening it gets you the next available device.
191 lines
7.5 KiB
C
191 lines
7.5 KiB
C
/* TUNTAP.H (C) Copyright James A. Pierson, 2002-2012 */
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/* (c) Copyright "Fish" (David B. Trout), 2002-2012 */
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/* Hercules - TUN/TAP Abstraction Layer */
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/* */
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/* Released under "The Q Public License Version 1" */
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/* (http://www.hercules-390.org/herclic.html) as modifications to */
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/* Hercules. */
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#ifndef __TUNTAP_H_
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#define __TUNTAP_H_
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#include "hercules.h"
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#if !defined(OPTION_W32_CTCI)
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#include "hifr.h" // struct in6_ifreq, struct hifr
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#else
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#include "tt32if.h" // struct if_req
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#include "hifr.h" // struct in6_ifreq, struct hifr
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#include "tt32api.h" // struct tt32ctl
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#endif // !defined(OPTION_W32_CTCI)
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#if !defined( OPTION_W32_CTCI )
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// ====================================================================
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// TunTap ioctl codes and Standard and TUNSETIFF ifr interface flags
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// ====================================================================
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#if defined(__APPLE__) || defined(__FreeBSD__)
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/* Why tun0 rather than the clone device /dev/tun? jph */
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#define HERCTUN_DEV "/dev/tun" // Default TUN/TAP char dev
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#else
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#define HERCTUN_DEV "/dev/net/tun" // Default TUN/TAP char dev
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#endif
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#if !defined(HAVE_LINUX_IF_TUN_H)
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/* tuntap ioctl defines */
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#define TUNSETNOCSUM _IOW('T', 200, int)
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#define TUNSETDEBUG _IOW('T', 201, int)
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#define TUNSETIFF _IOW('T', 202, int)
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#define TUNSETPERSIST _IOW('T', 203, int)
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#define TUNSETOWNER _IOW('T', 204, int)
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/* tuntap TUNSETIFF ifr flags */
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#define IFF_TUN 0x0001
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#define IFF_TAP 0x0002
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#define IFF_NO_PI 0x1000 /* Don't provide packet info */
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#define IFF_ONE_QUEUE 0x2000 /* Use only one packet queue */
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#endif // !defined(HAVE_LINUX_IF_TUN_H)
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/* Passed from ctc_ctci to tuntap to indicate that the interface */
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/* is configured and that only the interface name is to be set. */
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#define IFF_NO_HERCIFC 0x10000
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#if !defined(HAVE_NET_IF_H)
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/* Standard interface flags. */
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#define IFF_UP 0x1 /* interface is up */
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#define IFF_BROADCAST 0x2 /* broadcast address valid */
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#define IFF_DEBUG 0x4 /* Turn on debugging. */
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#define IFF_LOOPBACK 0x8 /* is a loopback net */
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#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
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#define IFF_RUNNING 0x40 /* resources allocated */
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#define IFF_PROMISC 0x100 /* receive all packets */
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#define IFF_MULTICAST 0x1000 /* Supports multicast */
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#elif !defined(IFF_PROMISC)
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#define IFF_PROMISC 0x100 /* required by qeth.h */
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#endif // !defined(HAVE_NET_IF_H)
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#endif // !defined( OPTION_W32_CTCI )
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// ====================================================================
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// Declarations
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// ====================================================================
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//
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// Create TUN/TAP Interface
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//
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extern int TUNTAP_CreateInterface ( char* pszTUNDevice,
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int iFlags,
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int* pfd,
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char* pszNetDevName );
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//
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// TUNTAP_CreateInterface flag: open as SOCKET (CTCI-WIN v3.3+ only)
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//
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#if defined(OPTION_W32_CTCI)
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#define IFF_OSOCK _O_TT32NOTIFY
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#else
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#define IFF_OSOCK 0
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#endif
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//
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// Configure TUN/TAP Interface
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//
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#ifdef OPTION_TUNTAP_CLRIPADDR
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extern int TUNTAP_ClrIPAddr ( char* pszNetDevName );
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#endif
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extern int TUNTAP_SetIPAddr ( char* pszNetDevName,
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char* pszIPAddr );
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extern int TUNTAP_SetDestAddr ( char* pszNetDevName,
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char* pszDestAddr );
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#if 0
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/* FIXME: Do we need a IPv6 equivalent for SIOCSIFDSTADDR?
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Does such a thing exist? Does it make sense? Do
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Should we even concern ourselves with it at all?
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*/
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#define HAVE_SETDESTADDR6 /* Is such a thing neeed? */
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#endif
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#ifdef OPTION_TUNTAP_SETNETMASK
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extern int TUNTAP_SetNetMask ( char* pszNetDevName,
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char* pszNetMask );
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#endif
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#ifdef OPTION_TUNTAP_SETBRDADDR
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extern int TUNTAP_SetBCastAddr ( char* pszNetDevName,
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char* pszBCastAddr );
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#endif
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extern int TUNTAP_SetIPAddr6 ( char* pszNetDevName,
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char* pszIPAddr6,
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char* pszPrefixLen6 );
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extern int TUNTAP_GetMTU ( char* pszNetDevName,
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char** ppszMTU );
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extern int TUNTAP_SetMTU ( char* pszNetDevName,
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char* pszMTU );
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extern int TUNTAP_GetMACAddr ( char* pszNetDevName,
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char** ppszMACAddr );
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#ifdef OPTION_TUNTAP_SETMACADDR
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extern int TUNTAP_SetMACAddr ( char* pszNetDevName,
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char* pszMACAddr );
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#endif
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extern int TUNTAP_SetFlags ( char* pszNetDevName,
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int iFlags );
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extern int TUNTAP_GetFlags ( char* pszNetDevName,
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int* piFlags );
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#ifdef OPTION_TUNTAP_DELADD_ROUTES
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extern int TUNTAP_AddRoute ( char* pszNetDevName,
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char* pszDestAddr,
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char* pszNetMask,
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char* pszGWAddr,
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int iFlags );
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extern int TUNTAP_DelRoute ( char* pszNetDevName,
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char* pszDestAddr,
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char* pszNetMask,
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char* pszGWAddr,
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int iFlags );
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#endif
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// (functions used by *BOTH* Win32 *and* NON-Win32 platforms)
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extern void build_herc_iface_mac ( BYTE* out_mac, const BYTE* in_ip );
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extern int ParseMAC( char* pszMACAddr, BYTE* pbMACAddr );
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extern int FormatMAC( char** ppszMACAddr, BYTE* mac );
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extern void packet_trace( BYTE *addr, int len, BYTE dir );
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// ====================================================================
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// Helper Macros
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// ====================================================================
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#if defined( HAVE_STRUCT_SOCKADDR_IN_SIN_LEN )
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#define set_sockaddr_in_sin_len( sockaddr_in_ptr ) \
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(sockaddr_in_ptr)->sin_len = sizeof( struct sockaddr_in )
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#else
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#define set_sockaddr_in_sin_len( sockaddr_in_ptr )
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#endif
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#if defined( OPTION_W32_CTCI )
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#define TUNTAP_Open tt32_open
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#define TUNTAP_Close tt32_close
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#define TUNTAP_Read tt32_read
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#define TUNTAP_Write tt32_write
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#define TUNTAP_BegMWrite(f,n) tt32_beg_write_multi(f,n)
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#define TUNTAP_EndMWrite(f) tt32_end_write_multi(f)
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#define TUNTAP_IOCtl tt32_ioctl
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#else // !defined( OPTION_W32_CTCI )
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#define TUNTAP_Open open
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#define TUNTAP_Close close
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#define TUNTAP_Read read
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#define TUNTAP_Write write
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#define TUNTAP_BegMWrite(f,n)
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#define TUNTAP_EndMWrite(f)
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#define TUNTAP_IOCtl ioctl
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#endif // defined( OPTION_W32_CTCI )
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#endif // __TUNTAP_H_
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