diff options
author | guido <guido@FreeBSD.org> | 1999-11-23 21:44:59 +0000 |
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committer | guido <guido@FreeBSD.org> | 1999-11-23 21:44:59 +0000 |
commit | 75b4f99d65c79fc19890c1fe50a53dcb8e962c4b (patch) | |
tree | dd6e6ca037b001211b889429a9c8327f3e5285ed /sys/netinet/ip_proxy.h | |
parent | 892533638d4a03333aa25823e4d983593cdcc2b1 (diff) | |
download | FreeBSD-src-75b4f99d65c79fc19890c1fe50a53dcb8e962c4b.zip FreeBSD-src-75b4f99d65c79fc19890c1fe50a53dcb8e962c4b.tar.gz |
Add kernel parts of revived ipfilter (3.3.3.)
Diffstat (limited to 'sys/netinet/ip_proxy.h')
-rw-r--r-- | sys/netinet/ip_proxy.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/sys/netinet/ip_proxy.h b/sys/netinet/ip_proxy.h new file mode 100644 index 0000000..9ccd46a --- /dev/null +++ b/sys/netinet/ip_proxy.h @@ -0,0 +1,130 @@ +/* + * Copyright (C) 1997-1998 by Darren Reed. + * + * Redistribution and use in source and binary forms are permitted + * provided that this notice is preserved and due credit is given + * to the original author and the contributors. + * + * $Id: ip_proxy.h,v 2.1.2.1 1999/09/19 12:18:20 darrenr Exp $ + * $FreeBSD$ + */ + +#ifndef __IP_PROXY_H__ +#define __IP_PROXY_H__ + +#ifndef SOLARIS +#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) +#endif + +#ifndef APR_LABELLEN +#define APR_LABELLEN 16 +#endif +#define AP_SESS_SIZE 53 + +struct nat; +struct ipnat; + +typedef struct ap_tcp { + u_short apt_sport; /* source port */ + u_short apt_dport; /* destination port */ + short apt_sel[2]; /* {seq,ack}{off,min} set selector */ + short apt_seqoff[2]; /* sequence # difference */ + tcp_seq apt_seqmin[2]; /* don't change seq-off until after this */ + short apt_ackoff[2]; /* sequence # difference */ + tcp_seq apt_ackmin[2]; /* don't change seq-off until after this */ + u_char apt_state[2]; /* connection state */ +} ap_tcp_t; + +typedef struct ap_udp { + u_short apu_sport; /* source port */ + u_short apu_dport; /* destination port */ +} ap_udp_t; + +typedef struct ap_session { + struct aproxy *aps_apr; + union { + struct ap_tcp apu_tcp; + struct ap_udp apu_udp; + } aps_un; + u_int aps_flags; + U_QUAD_T aps_bytes; /* bytes sent */ + U_QUAD_T aps_pkts; /* packets sent */ + void *aps_nat; /* pointer back to nat struct */ + void *aps_data; /* private data */ + int aps_p; /* protocol */ + int aps_psiz; /* size of private data */ + struct ap_session *aps_hnext; + struct ap_session *aps_next; +} ap_session_t ; + +#define aps_sport aps_un.apu_tcp.apt_sport +#define aps_dport aps_un.apu_tcp.apt_dport +#define aps_sel aps_un.apu_tcp.apt_sel +#define aps_seqoff aps_un.apu_tcp.apt_seqoff +#define aps_seqmin aps_un.apu_tcp.apt_seqmin +#define aps_state aps_un.apu_tcp.apt_state +#define aps_ackoff aps_un.apu_tcp.apt_ackoff +#define aps_ackmin aps_un.apu_tcp.apt_ackmin + + +typedef struct aproxy { + char apr_label[APR_LABELLEN]; /* Proxy label # */ + u_char apr_p; /* protocol */ + int apr_ref; /* +1 per rule referencing it */ + int apr_flags; + int (* apr_init) __P((void)); + int (* apr_new) __P((fr_info_t *, ip_t *, + ap_session_t *, struct nat *)); + int (* apr_inpkt) __P((fr_info_t *, ip_t *, + ap_session_t *, struct nat *)); + int (* apr_outpkt) __P((fr_info_t *, ip_t *, + ap_session_t *, struct nat *)); +} aproxy_t; + +#define APR_DELETE 1 + + +/* + * Real audio proxy structure and #defines + */ +typedef struct { + int rap_seenpna; + int rap_seenver; + int rap_version; + int rap_eos; /* End Of Startup */ + int rap_gotid; + int rap_gotlen; + int rap_mode; + int rap_sdone; + u_short rap_plport; + u_short rap_prport; + u_short rap_srport; + char rap_svr[19]; + u_32_t rap_sbf; /* flag to indicate which of the 19 bytes have + * been filled + */ + tcp_seq rap_sseq; +} raudio_t; + +#define RA_ID_END 0 +#define RA_ID_UDP 1 +#define RA_ID_ROBUST 7 + +#define RAP_M_UDP 1 +#define RAP_M_ROBUST 2 +#define RAP_M_TCP 4 +#define RAP_M_UDP_ROBUST (RAP_M_UDP|RAP_M_ROBUST) + + +extern ap_session_t *ap_sess_tab[AP_SESS_SIZE]; +extern ap_session_t *ap_sess_list; +extern aproxy_t ap_proxies[]; + +extern int appr_init __P((void)); +extern int appr_ok __P((ip_t *, tcphdr_t *, struct ipnat *)); +extern void appr_free __P((aproxy_t *)); +extern void aps_free __P((ap_session_t *)); +extern int appr_check __P((ip_t *, fr_info_t *, struct nat *)); +extern aproxy_t *appr_match __P((u_int, char *)); + +#endif /* __IP_PROXY_H__ */ |