1/* -*- mode: c; tab-width: 3; c-basic-offset: 3; -*-
2 Alias_local.h contains the function prototypes for alias.c,
3 alias_db.c, alias_util.c and alias_ftp.c, alias_irc.c (as well
4 as any future add-ons). It also includes macros, globals and
5 struct definitions shared by more than one alias*.c file.
6
7 This include file is intended to be used only within the aliasing
8 software. Outside world interfaces are defined in alias.h
9
10 This software is placed into the public domain with no restrictions
11 on its distribution.
12
13 Initial version: August, 1996 (cjm)
14
15 <updated several times by original author and Eivind Eklund>
16
17 $FreeBSD: head/sys/netinet/libalias/alias_local.h 67980 2000-10-30 17:24:12Z ru $
18*/
19#ifndef ALIAS_LOCAL_H
20#define ALIAS_LOCAL_H
21
22#ifndef NULL
23#define NULL 0
24#endif
25
| |
26/*
| 1/*
|
27 Macros
| 2 * Alias_local.h contains the function prototypes for alias.c,
3 * alias_db.c, alias_util.c and alias_ftp.c, alias_irc.c (as well
4 * as any future add-ons). It also includes macros, globals and
5 * struct definitions shared by more than one alias*.c file.
6 *
7 * This include file is intended to be used only within the aliasing
8 * software. Outside world interfaces are defined in alias.h
9 *
10 * This software is placed into the public domain with no restrictions
11 * on its distribution.
12 *
13 * Initial version: August, 1996 (cjm)
14 *
15 * <updated several times by original author and Eivind Eklund>
16 *
17 * $FreeBSD: head/sys/netinet/libalias/alias_local.h 74778 2001-03-25 12:05:10Z brian $
|
28 */
29
| 18 */
19
|
30/*
31 The following macro is used to update an
32 internet checksum. "delta" is a 32-bit
33 accumulation of all the changes to the
34 checksum (adding in new 16-bit words and
35 subtracting out old words), and "cksum"
36 is the checksum value to be updated.
37*/
38#define ADJUST_CHECKSUM(acc, cksum) { \
39 acc += cksum; \
40 if (acc < 0) \
41 { \
42 acc = -acc; \
43 acc = (acc >> 16) + (acc & 0xffff); \
44 acc += acc >> 16; \
45 cksum = (u_short) ~acc; \
46 } \
47 else \
48 { \
49 acc = (acc >> 16) + (acc & 0xffff); \
50 acc += acc >> 16; \
51 cksum = (u_short) acc; \
52 } \
53}
| 20#ifndef _ALIAS_LOCAL_H_
21#define _ALIAS_LOCAL_H_
|
54
| 22
|
| 23/* Macros */
|
55
56/*
| 24
25/*
|
57 Globals
58*/
| 26 * The following macro is used to update an
27 * internet checksum. "delta" is a 32-bit
28 * accumulation of all the changes to the
29 * checksum (adding in new 16-bit words and
30 * subtracting out old words), and "cksum"
31 * is the checksum value to be updated.
32 */
33#define ADJUST_CHECKSUM(acc, cksum) \
34 do { \
35 acc += cksum; \
36 if (acc < 0) { \
37 acc = -acc; \
38 acc = (acc >> 16) + (acc & 0xffff); \
39 acc += acc >> 16; \
40 cksum = (u_short) ~acc; \
41 } else { \
42 acc = (acc >> 16) + (acc & 0xffff); \
43 acc += acc >> 16; \
44 cksum = (u_short) acc; \
45 } \
46 } while (0)
|
59
| 47
|
| 48/* Globals */
49
|
60extern int packetAliasMode;
61
| 50extern int packetAliasMode;
51
|
| 52/* Prototypes */
|
62
| 53
|
63/*
64 Structs
65*/
66
67struct alias_link; /* Incomplete structure */
68
69
70/*
71 Prototypes
72*/
73
| |
74/* General utilities */
| 54/* General utilities */
|
75u_short IpChecksum(struct ip *);
76u_short TcpChecksum(struct ip *);
77void DifferentialChecksum(u_short *, u_short *, u_short *, int);
| 55u_short IpChecksum(struct ip *_pip);
56u_short TcpChecksum(struct ip *_pip);
57void DifferentialChecksum(u_short *_cksum, u_short *_new, u_short *_old,
58 int _n);
|
78
79/* Internal data access */
80struct alias_link *
| 59
60/* Internal data access */
61struct alias_link *
|
81FindIcmpIn(struct in_addr, struct in_addr, u_short, int);
82
| 62 FindIcmpIn(struct in_addr _dst_addr, struct in_addr _alias_addr,
63 u_short _id_alias, int _create);
|
83struct alias_link *
| 64struct alias_link *
|
84FindIcmpOut(struct in_addr, struct in_addr, u_short, int);
85
| 65 FindIcmpOut(struct in_addr _src_addr, struct in_addr _dst_addr,
66 u_short _id, int _create);
|
86struct alias_link *
| 67struct alias_link *
|
87FindFragmentIn1(struct in_addr, struct in_addr, u_short);
88
| 68 FindFragmentIn1(struct in_addr _dst_addr, struct in_addr _alias_addr,
69 u_short _ip_id);
|
89struct alias_link *
| 70struct alias_link *
|
90FindFragmentIn2(struct in_addr, struct in_addr, u_short);
91
| 71 FindFragmentIn2(struct in_addr _dst_addr, struct in_addr _alias_addr,
72 u_short _ip_id);
|
92struct alias_link *
| 73struct alias_link *
|
93AddFragmentPtrLink(struct in_addr, u_short);
94
| 74 AddFragmentPtrLink(struct in_addr _dst_addr, u_short _ip_id);
|
95struct alias_link *
| 75struct alias_link *
|
96FindFragmentPtr(struct in_addr, u_short);
97
| 76 FindFragmentPtr(struct in_addr _dst_addr, u_short _ip_id);
|
98struct alias_link *
| 77struct alias_link *
|
99FindProtoIn(struct in_addr, struct in_addr, u_char);
100
| 78 FindProtoIn(struct in_addr _dst_addr, struct in_addr _alias_addr,
79 u_char _proto);
|
101struct alias_link *
| 80struct alias_link *
|
102FindProtoOut(struct in_addr, struct in_addr, u_char);
103
| 81 FindProtoOut(struct in_addr _src_addr, struct in_addr _dst_addr,
82 u_char _proto);
|
104struct alias_link *
| 83struct alias_link *
|
105FindUdpTcpIn (struct in_addr, struct in_addr, u_short, u_short, u_char, int);
106
| 84 FindUdpTcpIn(struct in_addr _dst_addr, struct in_addr _alias_addr,
85 u_short _dst_port, u_short _alias_port, u_char _proto, int _create);
|
107struct alias_link *
| 86struct alias_link *
|
108FindUdpTcpOut(struct in_addr, struct in_addr, u_short, u_short, u_char, int);
109
| 87 FindUdpTcpOut(struct in_addr _src_addr, struct in_addr _dst_addr,
88 u_short _src_port, u_short _dst_port, u_char _proto, int _create);
|
110struct alias_link *
| 89struct alias_link *
|
111AddPptp(struct in_addr, struct in_addr, struct in_addr, u_int16_t);
112
| 90 AddPptp(struct in_addr _src_addr, struct in_addr _dst_addr,
91 struct in_addr _alias_addr, u_int16_t _src_call_id);
|
113struct alias_link *
| 92struct alias_link *
|
114FindPptpOutByCallId(struct in_addr, struct in_addr, u_int16_t);
115
| 93 FindPptpOutByCallId(struct in_addr _src_addr,
94 struct in_addr _dst_addr, u_int16_t _src_call_id);
|
116struct alias_link *
| 95struct alias_link *
|
117FindPptpInByCallId(struct in_addr, struct in_addr, u_int16_t);
118
| 96 FindPptpInByCallId(struct in_addr _dst_addr,
97 struct in_addr _alias_addr, u_int16_t _dst_call_id);
|
119struct alias_link *
| 98struct alias_link *
|
120FindPptpOutByPeerCallId(struct in_addr, struct in_addr, u_int16_t);
121
| 99 FindPptpOutByPeerCallId(struct in_addr _src_addr,
100 struct in_addr _dst_addr, u_int16_t _dst_call_id);
|
122struct alias_link *
| 101struct alias_link *
|
123FindPptpInByPeerCallId(struct in_addr, struct in_addr, u_int16_t);
124
| 102 FindPptpInByPeerCallId(struct in_addr _dst_addr,
103 struct in_addr _alias_addr, u_int16_t _alias_call_id);
|
125struct alias_link *
| 104struct alias_link *
|
126FindRtspOut(struct in_addr, struct in_addr, u_short, u_short, u_char);
127
| 105 FindRtspOut(struct in_addr _src_addr, struct in_addr _dst_addr,
106 u_short _src_port, u_short _alias_port, u_char _proto);
|
128struct in_addr
| 107struct in_addr
|
129FindOriginalAddress(struct in_addr);
130
| 108 FindOriginalAddress(struct in_addr _alias_addr);
|
131struct in_addr
| 109struct in_addr
|
132FindAliasAddress(struct in_addr);
| 110 FindAliasAddress(struct in_addr _original_addr);
|
133
134/* External data access/modification */
| 111
112/* External data access/modification */
|
135int FindNewPortGroup(struct in_addr, struct in_addr,
136 u_short, u_short, u_short, u_char, u_char);
137void GetFragmentAddr(struct alias_link *, struct in_addr *);
138void SetFragmentAddr(struct alias_link *, struct in_addr);
139void GetFragmentPtr(struct alias_link *, char **);
140void SetFragmentPtr(struct alias_link *, char *);
141void SetStateIn(struct alias_link *, int);
142void SetStateOut(struct alias_link *, int);
143int GetStateIn(struct alias_link *);
144int GetStateOut(struct alias_link *);
145struct in_addr GetOriginalAddress(struct alias_link *);
146struct in_addr GetDestAddress(struct alias_link *);
147struct in_addr GetAliasAddress(struct alias_link *);
148struct in_addr GetDefaultAliasAddress(void);
149void SetDefaultAliasAddress(struct in_addr);
150u_short GetOriginalPort(struct alias_link *);
151u_short GetAliasPort(struct alias_link *);
152struct in_addr GetProxyAddress(struct alias_link *);
153void SetProxyAddress(struct alias_link *, struct in_addr);
154u_short GetProxyPort(struct alias_link *);
155void SetProxyPort(struct alias_link *, u_short);
156void SetAckModified(struct alias_link *);
157int GetAckModified(struct alias_link *);
158int GetDeltaAckIn(struct ip *, struct alias_link *);
159int GetDeltaSeqOut(struct ip *, struct alias_link *);
160void AddSeq(struct ip *, struct alias_link *, int);
161void SetExpire(struct alias_link *, int);
162void ClearCheckNewLink(void);
163void SetLastLineCrlfTermed(struct alias_link *, int);
164int GetLastLineCrlfTermed(struct alias_link *);
165void SetDestCallId(struct alias_link *, u_int16_t);
| 113int FindNewPortGroup(struct in_addr _dst_addr, struct in_addr _alias_addr,
114 u_short _src_port, u_short _dst_port, u_short _port_count,
115 u_char _proto, u_char _align);
116void GetFragmentAddr(struct alias_link *_link, struct in_addr *_src_addr);
117void SetFragmentAddr(struct alias_link *_link, struct in_addr _src_addr);
118void GetFragmentPtr(struct alias_link *_link, char **_fptr);
119void SetFragmentPtr(struct alias_link *_link, char *fptr);
120void SetStateIn(struct alias_link *_link, int _state);
121void SetStateOut(struct alias_link *_link, int _state);
122int GetStateIn(struct alias_link *_link);
123int GetStateOut(struct alias_link *_link);
124struct in_addr
125 GetOriginalAddress(struct alias_link *_link);
126struct in_addr
127 GetDestAddress(struct alias_link *_link);
128struct in_addr
129 GetAliasAddress(struct alias_link *_link);
130struct in_addr
131 GetDefaultAliasAddress(void);
132void SetDefaultAliasAddress(struct in_addr _alias_addr);
133u_short GetOriginalPort(struct alias_link *_link);
134u_short GetAliasPort(struct alias_link *_link);
135struct in_addr
136 GetProxyAddress(struct alias_link *_link);
137void SetProxyAddress(struct alias_link *_link, struct in_addr _addr);
138u_short GetProxyPort(struct alias_link *_link);
139void SetProxyPort(struct alias_link *_link, u_short _port);
140void SetAckModified(struct alias_link *_link);
141int GetAckModified(struct alias_link *_link);
142int GetDeltaAckIn(struct ip *_pip, struct alias_link *_link);
143int GetDeltaSeqOut(struct ip *_pip, struct alias_link *_link);
144void AddSeq(struct ip *_pip, struct alias_link *_link, int _delta);
145void SetExpire(struct alias_link *_link, int _expire);
146void ClearCheckNewLink(void);
147void SetLastLineCrlfTermed(struct alias_link *_link, int _yes);
148int GetLastLineCrlfTermed(struct alias_link *_link);
149void SetDestCallId(struct alias_link *_link, u_int16_t _cid);
|
166#ifndef NO_FW_PUNCH
| 150#ifndef NO_FW_PUNCH
|
167void PunchFWHole(struct alias_link *);
| 151void PunchFWHole(struct alias_link *_link);
|
168#endif
169
| 152#endif
153
|
170
| |
171/* Housekeeping function */
| 154/* Housekeeping function */
|
172void HouseKeeping(void);
| 155void HouseKeeping(void);
|
173
174/* Tcp specfic routines */
| 156
157/* Tcp specfic routines */
|
175/*lint -save -library Suppress flexelint warnings */
| 158/* lint -save -library Suppress flexelint warnings */
|
176
177/* FTP routines */
| 159
160/* FTP routines */
|
178void AliasHandleFtpOut(struct ip *, struct alias_link *, int);
| 161void AliasHandleFtpOut(struct ip *_pip, struct alias_link *_link,
162 int _maxpacketsize);
|
179
180/* IRC routines */
| 163
164/* IRC routines */
|
181void AliasHandleIrcOut(struct ip *, struct alias_link *, int);
| 165void AliasHandleIrcOut(struct ip *_pip, struct alias_link *_link,
166 int _maxsize);
|
182
183/* RTSP routines */
| 167
168/* RTSP routines */
|
184void AliasHandleRtspOut(struct ip *, struct alias_link *, int);
| 169void AliasHandleRtspOut(struct ip *_pip, struct alias_link *_link,
170 int _maxpacketsize);
|
185
186/* PPTP routines */
| 171
172/* PPTP routines */
|
187void AliasHandlePptpOut(struct ip *, struct alias_link *);
188void AliasHandlePptpIn(struct ip *, struct alias_link *);
189int AliasHandlePptpGreOut(struct ip *);
190int AliasHandlePptpGreIn(struct ip *);
| 173void AliasHandlePptpOut(struct ip *_pip, struct alias_link *_link);
174void AliasHandlePptpIn(struct ip *_pip, struct alias_link *_link);
175int AliasHandlePptpGreOut(struct ip *_pip);
176int AliasHandlePptpGreIn(struct ip *_pip);
|
191
192/* NetBIOS routines */
| 177
178/* NetBIOS routines */
|
193int AliasHandleUdpNbt(struct ip *, struct alias_link *, struct in_addr *, u_short);
194int AliasHandleUdpNbtNS(struct ip *, struct alias_link *, struct in_addr *, u_short *, struct in_addr *, u_short *);
| 179int AliasHandleUdpNbt(struct ip *_pip, struct alias_link *_link,
180 struct in_addr *_alias_address, u_short _alias_port);
181int AliasHandleUdpNbtNS(struct ip *_pip, struct alias_link *_link,
182 struct in_addr *_alias_address, u_short *_alias_port,
183 struct in_addr *_original_address, u_short *_original_port);
|
195
196/* CUSeeMe routines */
| 184
185/* CUSeeMe routines */
|
197void AliasHandleCUSeeMeOut(struct ip *, struct alias_link *);
198void AliasHandleCUSeeMeIn(struct ip *, struct in_addr);
| 186void AliasHandleCUSeeMeOut(struct ip *_pip, struct alias_link *_link);
187void AliasHandleCUSeeMeIn(struct ip *_pip, struct in_addr _original_addr);
|
199
200/* Transparent proxy routines */
| 188
189/* Transparent proxy routines */
|
201int ProxyCheck(struct ip *, struct in_addr *, u_short *);
202void ProxyModify(struct alias_link *, struct ip *, int, int);
| 190int ProxyCheck(struct ip *_pip, struct in_addr *_proxy_server_addr,
191 u_short *_proxy_server_port);
192void ProxyModify(struct alias_link *_link, struct ip *_pip,
193 int _maxpacketsize, int _proxy_type);
|
203
| 194
|
204
| |
205enum alias_tcp_state {
| 195enum alias_tcp_state {
|
206 ALIAS_TCP_STATE_NOT_CONNECTED,
207 ALIAS_TCP_STATE_CONNECTED,
208 ALIAS_TCP_STATE_DISCONNECTED
| 196 ALIAS_TCP_STATE_NOT_CONNECTED,
197 ALIAS_TCP_STATE_CONNECTED,
198 ALIAS_TCP_STATE_DISCONNECTED
|
209};
| 199};
|
| 200
|
210/*lint -restore */
| 201/*lint -restore */
|
211#endif /* defined(ALIAS_LOCAL_H) */
| 202
203#endif /* !_ALIAS_LOCAL_H_ */
|
| |