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Diffstat (limited to 'network_cmds/ecnprobe/inet.h')
| -rw-r--r-- | network_cmds/ecnprobe/inet.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/network_cmds/ecnprobe/inet.h b/network_cmds/ecnprobe/inet.h new file mode 100644 index 0000000..8d1ccff --- /dev/null +++ b/network_cmds/ecnprobe/inet.h @@ -0,0 +1,206 @@ +/* + 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_ */ |