[apple/network_cmds.git] / ecnprobe / inet.h

/*
 Copyright (c) 2000  
 International Computer Science Institute
 All rights reserved.

 This file may contain software code originally developed for the
 Sting project. The Sting software carries the following copyright:

 Copyright (c) 1998, 1999
 Stefan Savage and the University of Washington.
 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. All advertising materials mentioning features or use of this software
    must display the following acknowledgment:
      This product includes software developed by ACIRI, the AT&T
      Center for Internet Research at ICSI (the International Computer
      Science Institute). This product may also include software developed
      by Stefan Savage at the University of Washington.  
 4. The names of ACIRI, ICSI, Stefan Savage and University of Washington
    may not be used to endorse or promote products derived from this software
    without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY ICSI 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 ICSI 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.
*/

#ifndef _INET_H_
#define _INET_H_

/* XXX These are machine/compiler dependent */
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint32;

#define IPPROTOCOL_ICMP		1
#define IPPROTOCOL_IGMP		2
#define IPPROTOCOL_TCP		6
#define IPPROTOCOL_UDP		17
#define IP_DF 0x4000

/* ICMP type */
#define ICMP_TIMXCEED	11

/* TCP Flags */
#define TCPFLAGS_FIN	0x01
#define TCPFLAGS_SYN	0x02
#define TCPFLAGS_RST	0x04
#define TCPFLAGS_PSH	0x08
#define TCPFLAGS_ACK	0x10
#define TCPFLAGS_URG	0x20
#define TCPFLAGS_ECN_ECHO	0x40
#define TCPFLAGS_CWR	0x80

/* IP Options Parameters -- for IP Options te*/
#define IPOPT_EOL            0x0
#define IPOLEN_EOL           0x1
#define IPOPT_NOP            0x1
#define IPOLEN_NOP           0x1
#define IPOPT_RR             0x7
#define IPOLEN_RR           0x27 /* Maximum length; up to 9 IP addresses */
#define IPOPT_TS            0x44
#define IPOLEN_TS           0x28
#define IPOPT_FAKED         0xff
#define IPOLEN_FAKED         0x4

/* TCP Options Parameters */
#define TCPOPT_EOL             0 
#define TCPOLEN_EOL            1
#define TCPOPT_NOP             1
#define TCPOLEN_NOP            1
#define TCPOPT_MAXSEG          2
#define TCPOLEN_MAXSEG         4
#define TCPOPT_WINDOW          3
#define TCPOLEN_WINDOW         3
#define TCPOPT_SACK_PERMITTED  4   
#define TCPOLEN_SACK_PERMITTED 2
#define TCPOPT_SACK            5   
#define TCPOPT_TIMESTAMP       8
#define TCPOLEN_TIMESTAMP     10
#define TCPOPT_FAKED        0x19
#define TCPOLEN_FAKED        0x4

struct IpHeader {
  uint8		ip_vhl;	 /* version (4bits) & header length (4 bits) */
  uint8		ip_tos;	 /* type of service */
  uint16	ip_len;  /* length of IP datagram */
  uint16	ip_id;	 /* identification (for frags) */ 
  uint16	ip_off;  /* offset (within a fragment) and flags (3 bits) */
  uint8		ip_ttl;  /* time to live */
  uint8		ip_p;	 /* protocol number */
  uint16	ip_xsum; /* checksum */
  uint32	ip_src;  /* source address */
  uint32	ip_dst;  /* destination address */
};

/* Pseudo header for doing TCP checksum calculation */
struct PseudoIpHeader {
  uint32	filler[2];
  uint8		zero;
  uint8		ip_p;
  uint16	ip_len;
  uint32	ip_src;
  uint32	ip_dst;
};

struct TcpHeader {
  uint16	tcp_sport;	/* source port */
  uint16	tcp_dport;	/* destination port */
  uint32	tcp_seq;	/* sequence number */
  uint32	tcp_ack;	/* acknoledgement number */
  uint8		tcp_hl;		/* header length (4 bits) */
  uint8		tcp_flags;	/* flags */
  uint16	tcp_win;	/* advertized window size */
  uint16	tcp_xsum;	/* checksum */
  uint16	tcp_urp;	/* urgent pointer */
};


struct IcmpHeader {
  uint8	        icmp_type;	/* ICMP message type */
  uint8  	icmp_code;	/* Message code */
  uint16	icmp_xsum;	/* checksum */
  uint16	icmp_unused;	/* unused field */
  uint16	icmp_mtu;	/* MTU of limiting interface */
};

struct IPPacket {
  struct IpHeader *ip;
  struct TcpHeader *tcp;
};

struct ICMPUnreachableErrorPacket {
  struct IpHeader ip;
  struct IcmpHeader icmp;
  struct IpHeader off_ip;
  /* 8-first bytes of TCP header */
  uint16 tcp_sport;
  uint16 tcp_dport;
  uint32 tcp_seqno;
};

struct ICMPTimeExceededErrorPacket {
  struct IpHeader ip;
  struct IcmpHeader icmp;
  struct IpHeader off_ip;
  /* 8-first bytes of Tcpheader */
  uint16 tcp_sport;
  uint16 tcp_dport;
  uint32 tcp_seqno;
};

char *InetAddress(uint32 addr);

uint16 InetChecksum(uint16 *ip_addr, uint16 *tcp_addr,  uint16 ip_len, uint16 tcp_len);

void PrintTcpPacket(struct IPPacket *p);
void PrintICMPUnreachableErrorPacket(struct ICMPUnreachableErrorPacket *p);

void WriteIPPacket(struct IPPacket *p,
		   uint32 src, 
		   uint32 dst, 
		   uint16 sport, 
		   uint16 dport,
		   uint32 seq, 
		   uint32 ack, 
		   uint8 flags, 
		   uint16 win,
		   uint16 urp, 
		   uint16 datalen, 
		   uint16 ip_optlen, 
		   uint16 optlen, 
		   uint8 iptos, 
		   uint8 u4tf); 

void ReadIPPacket(struct IPPacket *p, uint32 *src, uint32 *dst, 
		  uint16 *sport, uint16 *dport, uint32 *seq, uint32 *ack, 
		  uint8 *flags, uint16 *win, uint16 *urp, uint16 *datalen, 
		  uint16 *ip_optlen, uint16 *optlen);

void StorePacket (struct IPPacket *p); 

struct IPPacket *FindHeaderBoundaries(char *p);

struct IPPacket *AllocateIPPacket(int ip_optlen, int tcp_optlen, int datalen, char *str);

void FreeIPPacket(struct IPPacket **pkt_p);

#endif /* _INET_H_ */
Commit	Line	Data
89c4ed63 A	1	/*
	2	Copyright (c) 2000
	3	International Computer Science Institute
	4	All rights reserved.
	5
	6	This file may contain software code originally developed for the
	7	Sting project. The Sting software carries the following copyright:
	8
	9	Copyright (c) 1998, 1999
	10	Stefan Savage and the University of Washington.
	11	All rights reserved.
	12
	13	Redistribution and use in source and binary forms, with or without
	14	modification, are permitted provided that the following conditions
	15	are met:
	16	1. Redistributions of source code must retain the above copyright
	17	notice, this list of conditions and the following disclaimer.
	18	2. Redistributions in binary form must reproduce the above copyright
	19	notice, this list of conditions and the following disclaimer in the
	20	documentation and/or other materials provided with the distribution.
	21	3. All advertising materials mentioning features or use of this software
	22	must display the following acknowledgment:
	23	This product includes software developed by ACIRI, the AT&T
	24	Center for Internet Research at ICSI (the International Computer
	25	Science Institute). This product may also include software developed
	26	by Stefan Savage at the University of Washington.
	27	4. The names of ACIRI, ICSI, Stefan Savage and University of Washington
	28	may not be used to endorse or promote products derived from this software
	29	without specific prior written permission.
	30
	31	THIS SOFTWARE IS PROVIDED BY ICSI AND CONTRIBUTORS ``AS IS'' AND
	32	ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	33	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	34	ARE DISCLAIMED. IN NO EVENT SHALL ICSI OR CONTRIBUTORS BE LIABLE
	35	FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	36	DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	37	OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	38	HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	39	LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	40	OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	41	SUCH DAMAGE.
	42	*/
	43
	44	#ifndef _INET_H_
	45	#define _INET_H_
	46
	47	/* XXX These are machine/compiler dependent */
	48	typedef unsigned char uint8;
	49	typedef unsigned short uint16;
	50	typedef unsigned int uint32;
	51
	52	#define IPPROTOCOL_ICMP 1
	53	#define IPPROTOCOL_IGMP 2
	54	#define IPPROTOCOL_TCP 6
	55	#define IPPROTOCOL_UDP 17
	56	#define IP_DF 0x4000
	57
fa34b6f5 A	58	/* ICMP type */
	59	#define ICMP_TIMXCEED 11
	60
89c4ed63 A	61	/* TCP Flags */
	62	#define TCPFLAGS_FIN 0x01
	63	#define TCPFLAGS_SYN 0x02
	64	#define TCPFLAGS_RST 0x04
	65	#define TCPFLAGS_PSH 0x08
	66	#define TCPFLAGS_ACK 0x10
	67	#define TCPFLAGS_URG 0x20
	68	#define TCPFLAGS_ECN_ECHO 0x40
	69	#define TCPFLAGS_CWR 0x80
	70
	71	/* IP Options Parameters -- for IP Options te*/
	72	#define IPOPT_EOL 0x0
	73	#define IPOLEN_EOL 0x1
	74	#define IPOPT_NOP 0x1
	75	#define IPOLEN_NOP 0x1
	76	#define IPOPT_RR 0x7
	77	#define IPOLEN_RR 0x27 /* Maximum length; up to 9 IP addresses */
	78	#define IPOPT_TS 0x44
	79	#define IPOLEN_TS 0x28
	80	#define IPOPT_FAKED 0xff
	81	#define IPOLEN_FAKED 0x4
	82
	83	/* TCP Options Parameters */
	84	#define TCPOPT_EOL 0
	85	#define TCPOLEN_EOL 1
	86	#define TCPOPT_NOP 1
	87	#define TCPOLEN_NOP 1
	88	#define TCPOPT_MAXSEG 2
	89	#define TCPOLEN_MAXSEG 4
	90	#define TCPOPT_WINDOW 3
	91	#define TCPOLEN_WINDOW 3
	92	#define TCPOPT_SACK_PERMITTED 4
	93	#define TCPOLEN_SACK_PERMITTED 2
	94	#define TCPOPT_SACK 5
	95	#define TCPOPT_TIMESTAMP 8
	96	#define TCPOLEN_TIMESTAMP 10
	97	#define TCPOPT_FAKED 0x19
	98	#define TCPOLEN_FAKED 0x4
	99
	100	struct IpHeader {
	101	uint8 ip_vhl; /* version (4bits) & header length (4 bits) */
	102	uint8 ip_tos; /* type of service */
	103	uint16 ip_len; /* length of IP datagram */
	104	uint16 ip_id; /* identification (for frags) */
	105	uint16 ip_off; /* offset (within a fragment) and flags (3 bits) */
	106	uint8 ip_ttl; /* time to live */
	107	uint8 ip_p; /* protocol number */
	108	uint16 ip_xsum; /* checksum */
	109	uint32 ip_src; /* source address */
	110	uint32 ip_dst; /* destination address */
	111	};
	112
	113	/* Pseudo header for doing TCP checksum calculation */
	114	struct PseudoIpHeader {
	115	uint32 filler[2];
	116	uint8 zero;
	117	uint8 ip_p;
	118	uint16 ip_len;
	119	uint32 ip_src;
	120	uint32 ip_dst;
	121	};
	122
	123	struct TcpHeader {
	124	uint16 tcp_sport; /* source port */
125	uint16 tcp_dport; /* destination port */
126	uint32 tcp_seq; /* sequence number */
127	uint32 tcp_ack; /* acknoledgement number */
128	uint8 tcp_hl; /* header length (4 bits) */
129	uint8 tcp_flags; /* flags */
130	uint16 tcp_win; /* advertized window size */
131	uint16 tcp_xsum; /* checksum */
132	uint16 tcp_urp; /* urgent pointer */
133	};
134
135
136
137	struct IcmpHeader {
138	uint8 icmp_type; /* ICMP message type */
139	uint8 icmp_code; /* Message code */
140	uint16 icmp_xsum; /* checksum */
141	uint16 icmp_unused; /* unused field */
142	uint16 icmp_mtu; /* MTU of limiting interface */
143	};
144
145	struct IPPacket {
146	struct IpHeader *ip;
147	struct TcpHeader *tcp;
148	};
149
150	struct ICMPUnreachableErrorPacket {
151	struct IpHeader ip;
152	struct IcmpHeader icmp;
153	struct IpHeader off_ip;
154	/* 8-first bytes of TCP header */
155	uint16 tcp_sport;
156	uint16 tcp_dport;
157	uint32 tcp_seqno;
158	};
159
fa34b6f5 A	160	struct ICMPTimeExceededErrorPacket {
	161	struct IpHeader ip;
	162	struct IcmpHeader icmp;
	163	struct IpHeader off_ip;
	164	/* 8-first bytes of Tcpheader */
	165	uint16 tcp_sport;
	166	uint16 tcp_dport;
	167	uint32 tcp_seqno;
	168	};
	169
89c4ed63 A	170	char *InetAddress(uint32 addr);
	171
	172	uint16 InetChecksum(uint16 ip_addr, uint16 tcp_addr, uint16 ip_len, uint16 tcp_len);
	173
	174	void PrintTcpPacket(struct IPPacket *p);
	175	void PrintICMPUnreachableErrorPacket(struct ICMPUnreachableErrorPacket *p);
	176
	177	void WriteIPPacket(struct IPPacket *p,
	178	uint32 src,
	179	uint32 dst,
	180	uint16 sport,
	181	uint16 dport,
	182	uint32 seq,
	183	uint32 ack,
	184	uint8 flags,
	185	uint16 win,
	186	uint16 urp,
	187	uint16 datalen,
	188	uint16 ip_optlen,
	189	uint16 optlen,
	190	uint8 iptos,
	191	uint8 u4tf);
	192
	193	void ReadIPPacket(struct IPPacket p, uint32 src, uint32 *dst,
	194	uint16 sport, uint16 dport, uint32 seq, uint32 ack,
	195	uint8 flags, uint16 win, uint16 urp, uint16 datalen,
	196	uint16 ip_optlen, uint16 optlen);
	197
	198	void StorePacket (struct IPPacket *p);
	199
	200	struct IPPacket FindHeaderBoundaries(char p);
	201
	202	struct IPPacket AllocateIPPacket(int ip_optlen, int tcp_optlen, int datalen, char str);
	203
	204	void FreeIPPacket(struct IPPacket **pkt_p);
	205
	206	#endif /* _INET_H_ */