139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/*
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Copyright 2008,2009 Luigi Auriemma
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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http://www.gnu.org/licenses/gpl-2.0.txt
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*/
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#define TH_FIN 0x01
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#define TH_SYN 0x02
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#define TH_RST 0x04
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#define TH_PSH 0x08
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#define TH_ACK 0x10
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#define TH_URG 0x20
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#define TH_ECN 0x40
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#define TH_CWR 0x80
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#pragma pack(1)
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typedef struct {
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uint8_t ihl_ver;
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uint8_t tos;
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uint16_t tot_len;
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uint16_t id;
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uint16_t frag_off;
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uint8_t ttl;
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uint8_t protocol;
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uint16_t check;
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uint32_t saddr;
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uint32_t daddr;
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} iph;
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typedef struct {
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uint16_t source;
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uint16_t dest;
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uint16_t len;
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uint16_t check;
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} udph;
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typedef struct {
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uint32_t saddr;
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uint32_t daddr;
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uint8_t zero;
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uint8_t protocol;
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uint16_t length;
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} udph_pseudo;
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typedef struct {
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uint16_t source;
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uint16_t dest;
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uint32_t seq;
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uint32_t ack_seq;
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uint8_t doff;
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uint8_t flags;
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uint16_t window;
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uint16_t check;
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uint16_t urg_ptr;
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} tcph;
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typedef struct {
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uint8_t icmp_type;
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uint8_t icmp_code;
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uint16_t icmp_cksum;
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union {
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uint8_t ih_pptr;
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uint32_t ih_gwaddr;
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struct {
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uint16_t icd_id;
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uint16_t icd_seq;
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} ih_idseq;
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uint32_t ih_void;
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struct {
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uint16_t ipm_void;
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uint16_t ipm_nextmtu;
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} ih_pmtu;
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struct {
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uint8_t irt_num_addrs;
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uint8_t irt_wpa;
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uint16_t irt_lifetime;
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} ih_rtradv;
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} icmp_hun;
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#define icmp_pptr icmp_hun.ih_pptr
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#define icmp_gwaddr icmp_hun.ih_gwaddr
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#define icmp_id icmp_hun.ih_idseq.icd_id
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#define icmp_seq icmp_hun.ih_idseq.icd_seq
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#define icmp_void icmp_hun.ih_void
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#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
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#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
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#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
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#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
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#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
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union {
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struct {
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uint32_t its_otime;
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uint32_t its_rtime;
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uint32_t its_ttime;
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} id_ts;
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struct {
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iph idi_ip;
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} id_ip;
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struct {
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uint32_t ira_addr;
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uint32_t ira_preference;
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} id_radv;
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uint32_t id_mask;
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uint8_t id_data[1];
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} icmp_dun;
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#define icmp_otime icmp_dun.id_ts.its_otime
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#define icmp_rtime icmp_dun.id_ts.its_rtime
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#define icmp_ttime icmp_dun.id_ts.its_ttime
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#define icmp_ip icmp_dun.id_ip.idi_ip
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#define icmp_radv icmp_dun.id_radv
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#define icmp_mask icmp_dun.id_mask
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#define icmp_data icmp_dun.id_data
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} icmph;
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typedef struct {
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uint8_t igmp_type;
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uint8_t igmp_code;
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uint16_t igmp_cksum;
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uint32_t igmp_group;
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} igmph;
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#pragma pack()
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