net.c

linux进程跟踪的工具和源代码

/*
 * Copyright (c) 1991, 1992 Paul Kranenburg <[e-mail]>
 * Copyright (c) 1993 Branko Lankester <[e-mail]>
 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <[e-mail]>
 * Copyright (c) 1996-2000 Wichert Akkerman <[e-mail]>
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 *	$Id: net.c,v 1.23 2001/03/27 16:47:36 hughesj Exp $
 */

#include "defs.h"

#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>

#if defined(HAVE_SIN6_SCOPE_ID_LINUX)
#define in6_addr in6_addr_libc
#define ipv6_mreq ipv6_mreq_libc
#define sockaddr_in6 sockaddr_in6_libc
#endif

#include <netinet/in.h>
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#ifdef HAVE_NETINET_UDP_H
#include <netinet/udp.h>
#endif
#include <arpa/inet.h>
#include <net/if.h>
#if defined(LINUX)
#include <asm/types.h>
#if defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC__ + __GLIBC_MINOR__ >= 3)
#  include <netipx/ipx.h>
#else
#  include <linux/ipx.h>
#endif
#endif /* LINUX */

#if defined (__GLIBC__) && (((__GLIBC__ < 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 1)) || defined(HAVE_SIN6_SCOPE_ID_LINUX))
#if defined(HAVE_LINUX_IN6_H)
#if defined(HAVE_SIN6_SCOPE_ID_LINUX)
#undef in6_addr
#undef ipv6_mreq
#undef sockaddr_in6
#define in6_addr in6_addr_kernel
#define ipv6_mreq ipv6_mreq_kernel
#define sockaddr_in6 sockaddr_in6_kernel
#endif
#include <linux/in6.h>
#if defined(HAVE_SIN6_SCOPE_ID_LINUX)
#undef in6_addr
#undef ipv6_mreq
#undef sockaddr_in6
#define in6_addr in6_addr_libc
#define ipv6_mreq ipv6_mreq_libc
#define sockaddr_in6 sockaddr_in6_kernel
#endif
#endif
#endif

#if defined(HAVE_SYS_UIO_H)
#include <sys/uio.h>
#endif

#if defined(HAVE_LINUX_NETLINK_H)
#include <linux/netlink.h>
#endif

#if defined(HAVE_LINUX_IF_PACKET_H)
#include <linux/if_packet.h>
#endif

#if defined(HAVE_LINUX_ICMP_H)
#include <linux/icmp.h>
#endif

#ifndef PF_UNSPEC
#define PF_UNSPEC AF_UNSPEC
#endif

#if UNIXWARE >= 7
#define HAVE_SENDMSG		1		/* HACK - *FIXME* */
#endif

#ifdef LINUX
/* Under Linux these are enums so we can't test for them with ifdef. */
#define IPPROTO_EGP IPPROTO_EGP
#define IPPROTO_PUP IPPROTO_PUP
#define IPPROTO_IDP IPPROTO_IDP
#define IPPROTO_IGMP IPPROTO_IGMP
#define IPPROTO_RAW IPPROTO_RAW
#define IPPROTO_MAX IPPROTO_MAX
#endif

static struct xlat domains[] = {
	{ PF_UNSPEC,	"PF_UNSPEC"	},
	{ PF_UNIX,	"PF_UNIX"	},
	{ PF_INET,	"PF_INET"	},
#ifdef PF_NETLINK
	{ PF_NETLINK,	"PF_NETLINK"	},
#endif
#ifdef PF_PACKET
	{ PF_PACKET,	"PF_PACKET"	},
#endif
#ifdef PF_INET6
	{ PF_INET6,	"PF_INET6"	},
#endif
#ifdef PF_ATMSVC
	{ PF_ATMSVC,	"PF_INET6"	},
#endif
#ifdef PF_INET6
	{ PF_INET6,	"PF_INET6"	},
#endif
#ifdef PF_LOCAL
	{ PF_LOCAL,	"PS_LOCAL"	},
#endif
#ifdef PF_ISO
	{ PF_ISO,	"PF_ISO"	},
#endif
#ifdef PF_AX25
	{ PF_AX25,	"PF_AX25"	},
#endif
#ifdef PF_IPX
	{ PF_IPX,	"PF_IPX"	},
#endif
#ifdef PF_APPLETALK
	{ PF_APPLETALK,	"PF_APPLETALK"	},
#endif
#ifdef PF_NETROM
	{ PF_NETROM,	"PF_NETROM"	},
#endif
#ifdef PF_BRIDGE
	{ PF_BRIDGE,	"PF_BRIDGE"	},
#endif
#ifdef PF_AAL5
	{ PF_AAL5,	"PF_AAL5"	},
#endif
#ifdef PF_X25
	{ PF_X25,	"PF_X25"	},
#endif
#ifdef PF_ROSE
	{ PF_ROSE,	"PF_ROSE"	},
#endif
#ifdef PF_DECNET
	{ PF_DECNET,	"PF_DECNET"	},
#endif
#ifdef PF_NETBEUI
	{ PF_NETBEUI,	"PF_NETBEUI"	},
#endif
#ifdef PF_IMPLINK
	{ PF_IMPLINK,	"PF_IMPLINK"	},
#endif
	{ 0,		NULL		},
};
static struct xlat addrfams[] = {
	{ AF_UNSPEC,	"AF_UNSPEC"	},
	{ AF_UNIX,	"AF_UNIX"	},
	{ AF_INET,	"AF_INET"	},
#ifdef AF_INET6
	{ AF_INET6,	"AF_INET6"	},
#endif
	{ AF_DECnet,	"AF_DECnet"	},
#ifdef PF_ATMSVC
	{ AF_ATMSVC,	"AF_ATMSVC"	},
#endif
#ifdef AF_PACKET
	{ AF_PACKET,	"AF_PACKET"	},
#endif
#ifdef AF_NETLINK
	{ AF_NETLINK,	"AF_NETLINK"	},
#endif
#ifdef AF_ISO
	{ AF_ISO,	"AF_ISO"	},
#endif
#ifdef AF_IMPLINK
	{ AF_IMPLINK,	"AF_IMPLINK"	},
#endif
	{ 0,		NULL		},
};
static struct xlat socktypes[] = {
	{ SOCK_STREAM,	"SOCK_STREAM"	},
	{ SOCK_DGRAM,	"SOCK_DGRAM"	},
#ifdef SOCK_RAW
	{ SOCK_RAW,	"SOCK_RAW"	},
#endif
#ifdef SOCK_SEQPACKET
	{ SOCK_SEQPACKET,"SOCK_SEQPACKET"},
#endif
#ifdef SOCK_RDM
	{ SOCK_RDM,	"SOCK_RDM"	},
#endif
#ifdef SOCK_PACKET
	{ SOCK_PACKET,	"SOCK_PACKET"	},
#endif
	{ 0,		NULL		},
};
static struct xlat socketlayers[] = {
#if defined(SOL_IP)
	{ SOL_IP,	"SOL_IP"	},
#endif
#if defined(SOL_ICMP)
	{ SOL_ICMP,	"SOL_ICMP"	},
#endif
#if defined(SOL_TCP)
	{ SOL_TCP,	"SOL_TCP"	},
#endif
#if defined(SOL_UDP)
	{ SOL_UDP,	"SOL_UDP"	},
#endif
#if defined(SOL_IPV6)
	{ SOL_IPV6,	"SOL_IPV6"	},
#endif
#if defined(SOL_ICMPV6)
	{ SOL_ICMPV6,	"SOL_ICMPV6"	},
#endif
#if defined(SOL_RAW)
	{ SOL_RAW,	"SOL_RAW"	},
#endif
#if defined(SOL_IPX)
	{ SOL_IPX,	"SOL_IPX"	},
#endif
#if defined(SOL_IPX)
	{ SOL_IPX,	"SOL_IPX"	},
#endif
#if defined(SOL_AX25)
	{ SOL_AX25,	"SOL_AX25"	},
#endif
#if defined(SOL_ATALK)
	{ SOL_ATALK,	"SOL_ATALK"	},
#endif
#if defined(SOL_NETROM)
	{ SOL_NETROM,	"SOL_NETROM"	},
#endif
#if defined(SOL_ROSE)
	{ SOL_ROSE,	"SOL_ROSE"	},
#endif
#if defined(SOL_DECNET)
	{ SOL_DECNET,	"SOL_DECNET"	},
#endif
#if defined(SOL_X25)
	{ SOL_X25,	"SOL_X25"	},
#endif
#if defined(SOL_PACKET)
	{ SOL_PACKET,	"SOL_PACKET"	},
#endif
#if defined(SOL_ATM)
	{ SOL_ATM,	"SOL_ATM"	},
#endif
#if defined(SOL_AAL)
	{ SOL_AAL,	"SOL_AAL"	},
#endif
#if defined(SOL_IRDA)
	{ SOL_IRDA,	"SOL_IRDA"	},
#endif
	{ SOL_SOCKET,	"SOL_SOCKET"	},	/* Never used! */
};
static struct xlat protocols[] = {
	{ IPPROTO_IP,	"IPPROTO_IP"	},
	{ IPPROTO_ICMP,	"IPPROTO_ICMP"	},
	{ IPPROTO_TCP,	"IPPROTO_TCP"	},
	{ IPPROTO_UDP,	"IPPROTO_UDP"	},
#ifdef IPPROTO_GGP
	{ IPPROTO_GGP,	"IPPROTO_GGP"	},
#endif
#ifdef IPPROTO_EGP
	{ IPPROTO_EGP,	"IPPROTO_EGP"	},
#endif
#ifdef IPPROTO_PUP
	{ IPPROTO_PUP,	"IPPROTO_PUP"	},
#endif
#ifdef IPPROTO_IDP
	{ IPPROTO_IDP,	"IPPROTO_IDP"	},
#endif
#ifdef IPPROTO_IPV6
	{ IPPROTO_IPV6,	"IPPROTO_IPV6"	},
#endif
#ifdef IPPROTO_ICMPV6
	{ IPPROTO_ICMPV6,"IPPROTO_ICMPV6"},
#endif
#ifdef IPPROTO_IGMP
	{ IPPROTO_IGMP,	"IPPROTO_IGMP"	},
#endif
#ifdef IPPROTO_HELLO
	{ IPPROTO_HELLO,"IPPROTO_HELLO"	},
#endif
#ifdef IPPROTO_ND
	{ IPPROTO_ND,	"IPPROTO_ND"	},
#endif
#ifdef IPPROTO_RAW
	{ IPPROTO_RAW,	"IPPROTO_RAW"	},
#endif
#ifdef IPPROTO_MAX
	{ IPPROTO_MAX,	"IPPROTO_MAX"	},
#endif
#ifdef IPPROTO_IPIP
	{ IPPROTO_IPIP,	"IPPROTO_IPIP"	},
#endif
	{ 0,		NULL		},
};
static struct xlat msg_flags[] = {
	{ MSG_OOB,	"MSG_OOB"	},
#ifdef MSG_DONTROUTE
	{ MSG_DONTROUTE,"MSG_DONTROUTE"	},
#endif
#ifdef MSG_PEEK
	{ MSG_PEEK,	"MSG_PEEK"	},
#endif
#ifdef MSG_CTRUNC
	{ MSG_CTRUNC,	"MSG_CTRUNC"	},
#endif
#ifdef MSG_PROXY
	{ MSG_PROXY,	"MSG_PROXY"	},
#endif
#ifdef MSG_EOR
	{ MSG_EOR,	"MSG_EOR"	},
#endif
#ifdef MSG_WAITALL
	{ MSG_WAITALL,	"MSG_WAITALL"	},
#endif
#ifdef MSG_TRUNC
	{ MSG_TRUNC,	"MSG_TRUNC"	},
#endif
#ifdef MSG_CTRUNC
	{ MSG_CTRUNC,	"MSG_CTRUNC"	},
#endif
#ifdef MSG_ERRQUEUE
	{ MSG_ERRQUEUE,	"MSG_ERRQUEUE"	},
#endif
#ifdef MSG_DONTWAIT
	{ MSG_DONTWAIT,	"MSG_DONTWAIT"	},
#endif
#ifdef MSG_CONFIRM
	{ MSG_CONFIRM,	"MSG_CONFIRM"	},
#endif
#ifdef MSG_PROBE
	{ MSG_PROBE,	"MSG_PROBE"	},
#endif
	{ 0,		NULL		},
};

static struct xlat sockoptions[] = {
#ifdef SO_PEERCRED
	{ SO_PEERCRED,	"SO_PEERCRED"	},
#endif
#ifdef SO_PASSCRED
	{ SO_PASSCRED,	"SO_PASSCRED"	},
#endif
#ifdef SO_DEBUG
	{ SO_DEBUG,	"SO_DEBUG"	},
#endif
#ifdef SO_REUSEADDR
	{ SO_REUSEADDR,	"SO_REUSEADDR"	},
#endif
#ifdef SO_KEEPALIVE
	{ SO_KEEPALIVE,	"SO_KEEPALIVE"	},
#endif
#ifdef SO_DONTROUTE
	{ SO_DONTROUTE,	"SO_DONTROUTE"	},
#endif
#ifdef SO_BROADCAST
	{ SO_BROADCAST,	"SO_BROADCAST"	},
#endif
#ifdef SO_LINGER
	{ SO_LINGER,	"SO_LINGER"	},
#endif
#ifdef SO_OOBINLINE
	{ SO_OOBINLINE,	"SO_OOBINLINE"	},
#endif
#ifdef SO_TYPE
	{ SO_TYPE,	"SO_TYPE"	},
#endif
#ifdef SO_ERROR
	{ SO_ERROR,	"SO_ERROR"	},
#endif
#ifdef SO_SNDBUF
	{ SO_SNDBUF,	"SO_SNDBUF"	},
#endif
#ifdef SO_RCVBUF
	{ SO_RCVBUF,	"SO_RCVBUF"	},
#endif
#ifdef SO_NO_CHECK
	{ SO_NO_CHECK,	"SO_NO_CHECK"	},
#endif
#ifdef SO_PRIORITY
	{ SO_PRIORITY,	"SO_PRIORITY"	},
#endif
#ifdef SO_ACCEPTCONN
	{ SO_ACCEPTCONN,"SO_ACCEPTCONN"	},
#endif
#ifdef SO_USELOOPBACK
	{ SO_USELOOPBACK,"SO_USELOOPBACK"},
#endif
#ifdef SO_SNDLOWAT
	{ SO_SNDLOWAT,	"SO_SNDLOWAT"	},
#endif
#ifdef SO_RCVLOWAT
	{ SO_RCVLOWAT,	"SO_RCVLOWAT"	},
#endif
#ifdef SO_SNDTIMEO
	{ SO_SNDTIMEO,	"SO_SNDTIMEO"	},
#endif
#ifdef SO_RCVTIMEO
	{ SO_RCVTIMEO,	"SO_RCVTIMEO"	},
#endif
#ifdef SO_BSDCOMPAT
	{ SO_BSDCOMPAT,	"SO_BSDCOMPAT"	},
#endif
#ifdef SO_REUSEPORT
	{ SO_REUSEPORT,	"SO_REUSEPORT"	},
#endif
#ifdef SO_RCVLOWAT
	{ SO_RCVLOWAT, "SO_RCVLOWAT"	},
#endif
#ifdef SO_SNDLOWAT
	{ SO_SNDLOWAT, "SO_SNDLOWAT"	},
#endif
#ifdef SO_RCVTIMEO
	{ SO_RCVTIMEO, "SO_RCVTIMEO"	},
#endif
#ifdef SO_SNDTIMEO
	{ SO_SNDTIMEO, "SO_SNDTIMEO"	},
#endif
	{ 0,		NULL		},
};

#ifdef SOL_IP
static struct xlat sockipoptions[] = {
	{ IP_TOS,		"IP_TOS"		},
	{ IP_TTL,		"IP_TTL"		},
#if defined(IP_HDRINCL)
	{ IP_HDRINCL,		"IP_HDRINCL"		},
#endif
#if defined(IP_OPTIONS)
	{ IP_OPTIONS,		"IP_OPTIONS"		},
#endif
	{ IP_ROUTER_ALERT,	"IP_ROUTER_ALERT"	},
#if defined(IP_RECVOPTIONS)
	{ IP_RECVOPTIONS,	"IP_RECVOPTIONS"	},
#endif
	{ IP_RETOPTS,		"IP_RETOPTS"		},
	{ IP_PKTINFO,		"IP_PKTINFO"		},
	{ IP_PKTOPTIONS,	"IP_PKTOPTIONS"	},
	{ IP_MTU_DISCOVER,	"IP_MTU_DISCOVER"	},
	{ IP_MTU_DISCOVER,	"IP_MTU_DISCOVER"	},
	{ IP_RECVERR,		"IP_RECVERR"		},
	{ IP_RECVTTL,		"IP_RECRECVTTL"		},
	{ IP_RECVTOS,		"IP_RECRECVTOS"		},
#if defined(IP_MTU)
	{ IP_MTU,		"IP_MTU"		},
#endif
	{ IP_MULTICAST_IF,	"IP_MULTICAST_IF"	},
	{ IP_MULTICAST_TTL,	"IP_MULTICAST_TTL"	},
	{ IP_MULTICAST_LOOP,	"IP_MULTICAST_LOOP"	},
	{ IP_ADD_MEMBERSHIP,	"IP_ADD_MEMBERSHIP"	},
	{ IP_DROP_MEMBERSHIP,	"IP_DROP_MEMBERSHIP"	},
	{ 0,			NULL			},
};
#endif /* SOL_IP */

#ifdef SOL_IPX
static struct xlat sockipxoptions[] = {
	{ IPX_TYPE,     "IPX_TYPE"      },
	{ 0,            NULL            },