1/*
| 1/*
|
2 * Copyright (C) 1997-2000 by Darren Reed.
| 2 * Copyright (C) 1997-2001 by Darren Reed.
|
3 *
| 3 *
|
4 * Redistribution and use in source and binary forms are permitted
5 * provided that this notice is preserved and due credit is given
6 * to the original author and the contributors.
| 4 * See the IPFILTER.LICENCE file for details on licencing.
|
7 *
8 * $Id: ip_proxy.h,v 2.8.2.4 2000/12/02 00:15:03 darrenr Exp $
| 5 *
6 * $Id: ip_proxy.h,v 2.8.2.4 2000/12/02 00:15:03 darrenr Exp $
|
9 * $FreeBSD: head/sys/contrib/ipfilter/netinet/ip_proxy.h 72006 2001-02-04 14:26:56Z darrenr $
| 7 * $FreeBSD: head/sys/contrib/ipfilter/netinet/ip_proxy.h 80482 2001-07-28 11:58:26Z darrenr $
|
10 */
11
12#ifndef __IP_PROXY_H__
13#define __IP_PROXY_H__
14
15#ifndef SOLARIS
16#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
17#endif
18
19#ifndef APR_LABELLEN
20#define APR_LABELLEN 16
21#endif
22#define AP_SESS_SIZE 53
23
24struct nat;
25struct ipnat;
26
27typedef struct ap_tcp {
28 u_short apt_sport; /* source port */
29 u_short apt_dport; /* destination port */
30 short apt_sel[2]; /* {seq,ack}{off,min} set selector */
31 short apt_seqoff[2]; /* sequence # difference */
32 tcp_seq apt_seqmin[2]; /* don't change seq-off until after this */
33 short apt_ackoff[2]; /* sequence # difference */
34 tcp_seq apt_ackmin[2]; /* don't change seq-off until after this */
35 u_char apt_state[2]; /* connection state */
36} ap_tcp_t;
37
38typedef struct ap_udp {
39 u_short apu_sport; /* source port */
40 u_short apu_dport; /* destination port */
41} ap_udp_t;
42
43typedef struct ap_session {
44 struct aproxy *aps_apr;
45 union {
46 struct ap_tcp apu_tcp;
47 struct ap_udp apu_udp;
48 } aps_un;
49 u_int aps_flags;
50 U_QUAD_T aps_bytes; /* bytes sent */
51 U_QUAD_T aps_pkts; /* packets sent */
52 void *aps_nat; /* pointer back to nat struct */
53 void *aps_data; /* private data */
54 int aps_p; /* protocol */
55 int aps_psiz; /* size of private data */
56 struct ap_session *aps_hnext;
57 struct ap_session *aps_next;
58} ap_session_t;
59
60#define aps_sport aps_un.apu_tcp.apt_sport
61#define aps_dport aps_un.apu_tcp.apt_dport
62#define aps_sel aps_un.apu_tcp.apt_sel
63#define aps_seqoff aps_un.apu_tcp.apt_seqoff
64#define aps_seqmin aps_un.apu_tcp.apt_seqmin
65#define aps_state aps_un.apu_tcp.apt_state
66#define aps_ackoff aps_un.apu_tcp.apt_ackoff
67#define aps_ackmin aps_un.apu_tcp.apt_ackmin
68
69
70typedef struct aproxy {
71 struct aproxy *apr_next;
72 char apr_label[APR_LABELLEN]; /* Proxy label # */
73 u_char apr_p; /* protocol */
74 int apr_ref; /* +1 per rule referencing it */
75 int apr_flags;
76 int (* apr_init) __P((void));
77 void (* apr_fini) __P((void));
78 int (* apr_new) __P((fr_info_t *, ip_t *,
79 ap_session_t *, struct nat *));
80 int (* apr_inpkt) __P((fr_info_t *, ip_t *,
81 ap_session_t *, struct nat *));
82 int (* apr_outpkt) __P((fr_info_t *, ip_t *,
83 ap_session_t *, struct nat *));
84} aproxy_t;
85
86#define APR_DELETE 1
87
88#define APR_ERR(x) (((x) & 0xffff) << 16)
89#define APR_EXIT(x) (((x) >> 16) & 0xffff)
90#define APR_INC(x) ((x) & 0xffff)
91
92#define FTP_BUFSZ 160
93/*
94 * For the ftp proxy.
95 */
96typedef struct ftpside {
97 char *ftps_rptr;
98 char *ftps_wptr;
99 u_32_t ftps_seq;
100 u_32_t ftps_len;
101 int ftps_junk;
102 char ftps_buf[FTP_BUFSZ];
103} ftpside_t;
104
105typedef struct ftpinfo {
| 8 */
9
10#ifndef __IP_PROXY_H__
11#define __IP_PROXY_H__
12
13#ifndef SOLARIS
14#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
15#endif
16
17#ifndef APR_LABELLEN
18#define APR_LABELLEN 16
19#endif
20#define AP_SESS_SIZE 53
21
22struct nat;
23struct ipnat;
24
25typedef struct ap_tcp {
26 u_short apt_sport; /* source port */
27 u_short apt_dport; /* destination port */
28 short apt_sel[2]; /* {seq,ack}{off,min} set selector */
29 short apt_seqoff[2]; /* sequence # difference */
30 tcp_seq apt_seqmin[2]; /* don't change seq-off until after this */
31 short apt_ackoff[2]; /* sequence # difference */
32 tcp_seq apt_ackmin[2]; /* don't change seq-off until after this */
33 u_char apt_state[2]; /* connection state */
34} ap_tcp_t;
35
36typedef struct ap_udp {
37 u_short apu_sport; /* source port */
38 u_short apu_dport; /* destination port */
39} ap_udp_t;
40
41typedef struct ap_session {
42 struct aproxy *aps_apr;
43 union {
44 struct ap_tcp apu_tcp;
45 struct ap_udp apu_udp;
46 } aps_un;
47 u_int aps_flags;
48 U_QUAD_T aps_bytes; /* bytes sent */
49 U_QUAD_T aps_pkts; /* packets sent */
50 void *aps_nat; /* pointer back to nat struct */
51 void *aps_data; /* private data */
52 int aps_p; /* protocol */
53 int aps_psiz; /* size of private data */
54 struct ap_session *aps_hnext;
55 struct ap_session *aps_next;
56} ap_session_t;
57
58#define aps_sport aps_un.apu_tcp.apt_sport
59#define aps_dport aps_un.apu_tcp.apt_dport
60#define aps_sel aps_un.apu_tcp.apt_sel
61#define aps_seqoff aps_un.apu_tcp.apt_seqoff
62#define aps_seqmin aps_un.apu_tcp.apt_seqmin
63#define aps_state aps_un.apu_tcp.apt_state
64#define aps_ackoff aps_un.apu_tcp.apt_ackoff
65#define aps_ackmin aps_un.apu_tcp.apt_ackmin
66
67
68typedef struct aproxy {
69 struct aproxy *apr_next;
70 char apr_label[APR_LABELLEN]; /* Proxy label # */
71 u_char apr_p; /* protocol */
72 int apr_ref; /* +1 per rule referencing it */
73 int apr_flags;
74 int (* apr_init) __P((void));
75 void (* apr_fini) __P((void));
76 int (* apr_new) __P((fr_info_t *, ip_t *,
77 ap_session_t *, struct nat *));
78 int (* apr_inpkt) __P((fr_info_t *, ip_t *,
79 ap_session_t *, struct nat *));
80 int (* apr_outpkt) __P((fr_info_t *, ip_t *,
81 ap_session_t *, struct nat *));
82} aproxy_t;
83
84#define APR_DELETE 1
85
86#define APR_ERR(x) (((x) & 0xffff) << 16)
87#define APR_EXIT(x) (((x) >> 16) & 0xffff)
88#define APR_INC(x) ((x) & 0xffff)
89
90#define FTP_BUFSZ 160
91/*
92 * For the ftp proxy.
93 */
94typedef struct ftpside {
95 char *ftps_rptr;
96 char *ftps_wptr;
97 u_32_t ftps_seq;
98 u_32_t ftps_len;
99 int ftps_junk;
100 char ftps_buf[FTP_BUFSZ];
101} ftpside_t;
102
103typedef struct ftpinfo {
|
106 u_int ftp_passok;
| 104 int ftp_passok;
105 int ftp_incok;
|
107 ftpside_t ftp_side[2];
108} ftpinfo_t;
109
110/*
111 * Real audio proxy structure and #defines
112 */
113typedef struct {
114 int rap_seenpna;
115 int rap_seenver;
116 int rap_version;
117 int rap_eos; /* End Of Startup */
118 int rap_gotid;
119 int rap_gotlen;
120 int rap_mode;
121 int rap_sdone;
122 u_short rap_plport;
123 u_short rap_prport;
124 u_short rap_srport;
125 char rap_svr[19];
126 u_32_t rap_sbf; /* flag to indicate which of the 19 bytes have
127 * been filled
128 */
129 tcp_seq rap_sseq;
130} raudio_t;
131
132#define RA_ID_END 0
133#define RA_ID_UDP 1
134#define RA_ID_ROBUST 7
135
136#define RAP_M_UDP 1
137#define RAP_M_ROBUST 2
138#define RAP_M_TCP 4
139#define RAP_M_UDP_ROBUST (RAP_M_UDP|RAP_M_ROBUST)
140
141
142extern ap_session_t *ap_sess_tab[AP_SESS_SIZE];
143extern ap_session_t *ap_sess_list;
144extern aproxy_t ap_proxies[];
145extern int ippr_ftp_pasvonly;
146
147extern int appr_add __P((aproxy_t *));
148extern int appr_del __P((aproxy_t *));
149extern int appr_init __P((void));
150extern void appr_unload __P((void));
151extern int appr_ok __P((ip_t *, tcphdr_t *, struct ipnat *));
152extern void appr_free __P((aproxy_t *));
153extern void aps_free __P((ap_session_t *));
154extern int appr_check __P((ip_t *, fr_info_t *, struct nat *));
155extern aproxy_t *appr_match __P((u_int, char *));
156
157#endif /* __IP_PROXY_H__ */
| 106 ftpside_t ftp_side[2];
107} ftpinfo_t;
108
109/*
110 * Real audio proxy structure and #defines
111 */
112typedef struct {
113 int rap_seenpna;
114 int rap_seenver;
115 int rap_version;
116 int rap_eos; /* End Of Startup */
117 int rap_gotid;
118 int rap_gotlen;
119 int rap_mode;
120 int rap_sdone;
121 u_short rap_plport;
122 u_short rap_prport;
123 u_short rap_srport;
124 char rap_svr[19];
125 u_32_t rap_sbf; /* flag to indicate which of the 19 bytes have
126 * been filled
127 */
128 tcp_seq rap_sseq;
129} raudio_t;
130
131#define RA_ID_END 0
132#define RA_ID_UDP 1
133#define RA_ID_ROBUST 7
134
135#define RAP_M_UDP 1
136#define RAP_M_ROBUST 2
137#define RAP_M_TCP 4
138#define RAP_M_UDP_ROBUST (RAP_M_UDP|RAP_M_ROBUST)
139
140
141extern ap_session_t *ap_sess_tab[AP_SESS_SIZE];
142extern ap_session_t *ap_sess_list;
143extern aproxy_t ap_proxies[];
144extern int ippr_ftp_pasvonly;
145
146extern int appr_add __P((aproxy_t *));
147extern int appr_del __P((aproxy_t *));
148extern int appr_init __P((void));
149extern void appr_unload __P((void));
150extern int appr_ok __P((ip_t *, tcphdr_t *, struct ipnat *));
151extern void appr_free __P((aproxy_t *));
152extern void aps_free __P((ap_session_t *));
153extern int appr_check __P((ip_t *, fr_info_t *, struct nat *));
154extern aproxy_t *appr_match __P((u_int, char *));
155
156#endif /* __IP_PROXY_H__ */
|