| alias.c (131566) | alias.c (131612) |
|---|---|
| 1/*- 2 * Copyright (c) 2001 Charles Mott <cm@linktel.net> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2001 Charles Mott <cm@linktel.net> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/netinet/libalias/alias.c 131566 2004-07-04 12:53:07Z phk $"); | 28__FBSDID("$FreeBSD: head/sys/netinet/libalias/alias.c 131612 2004-07-05 10:53:28Z des $"); |
| 29 30/* 31 Alias.c provides supervisory control for the functions of the 32 packet aliasing software. It consists of routines to monitor 33 TCP connection state, protocol-specific aliasing routines, 34 fragment handling and the following outside world functional 35 interfaces: SaveFragmentPtr, GetFragmentPtr, FragmentAliasIn, 36 PacketAliasIn and PacketAliasOut. --- 5 unchanged lines hidden (view full) --- 42 about the underlying data structures. Alias_ftp.c contains 43 special code for modifying the ftp PORT command used to establish 44 data connections, while alias_irc.c does the same for IRC 45 DCC. Alias_util.c contains a few utility routines. 46 47 Version 1.0 August, 1996 (cjm) 48 49 Version 1.1 August 20, 1996 (cjm) | 29 30/* 31 Alias.c provides supervisory control for the functions of the 32 packet aliasing software. It consists of routines to monitor 33 TCP connection state, protocol-specific aliasing routines, 34 fragment handling and the following outside world functional 35 interfaces: SaveFragmentPtr, GetFragmentPtr, FragmentAliasIn, 36 PacketAliasIn and PacketAliasOut. --- 5 unchanged lines hidden (view full) --- 42 about the underlying data structures. Alias_ftp.c contains 43 special code for modifying the ftp PORT command used to establish 44 data connections, while alias_irc.c does the same for IRC 45 DCC. Alias_util.c contains a few utility routines. 46 47 Version 1.0 August, 1996 (cjm) 48 49 Version 1.1 August 20, 1996 (cjm) |
| 50 PPP host accepts incoming connections for ports 0 to 1023. 51 (Gary Roberts pointed out the need to handle incoming 52 connections.) | 50 PPP host accepts incoming connections for ports 0 to 1023. 51 (Gary Roberts pointed out the need to handle incoming 52 connections.) |
| 53 54 Version 1.2 September 7, 1996 (cjm) | 53 54 Version 1.2 September 7, 1996 (cjm) |
| 55 Fragment handling error in alias_db.c corrected. 56 (Tom Torrance helped fix this problem.) | 55 Fragment handling error in alias_db.c corrected. 56 (Tom Torrance helped fix this problem.) |
| 57 58 Version 1.4 September 16, 1996 (cjm) | 57 58 Version 1.4 September 16, 1996 (cjm) |
| 59 - A more generalized method for handling incoming 60 connections, without the 0-1023 restriction, is 61 implemented in alias_db.c 62 - Improved ICMP support in alias.c. Traceroute 63 packet streams can now be correctly aliased. 64 - TCP connection closing logic simplified in 65 alias.c and now allows for additional 1 minute 66 "grace period" after FIN or RST is observed. | 59 - A more generalized method for handling incoming 60 connections, without the 0-1023 restriction, is 61 implemented in alias_db.c 62 - Improved ICMP support in alias.c. Traceroute 63 packet streams can now be correctly aliased. 64 - TCP connection closing logic simplified in 65 alias.c and now allows for additional 1 minute 66 "grace period" after FIN or RST is observed. |
| 67 68 Version 1.5 September 17, 1996 (cjm) | 67 68 Version 1.5 September 17, 1996 (cjm) |
| 69 Corrected error in handling incoming UDP packets with 0 checksum. 70 (Tom Torrance helped fix this problem.) | 69 Corrected error in handling incoming UDP packets with 0 checksum. 70 (Tom Torrance helped fix this problem.) |
| 71 72 Version 1.6 September 18, 1996 (cjm) | 71 72 Version 1.6 September 18, 1996 (cjm) |
| 73 Simplified ICMP aliasing scheme. Should now support 74 traceroute from Win95 as well as FreeBSD. | 73 Simplified ICMP aliasing scheme. Should now support 74 traceroute from Win95 as well as FreeBSD. |
| 75 76 Version 1.7 January 9, 1997 (cjm) | 75 76 Version 1.7 January 9, 1997 (cjm) |
| 77 - Out-of-order fragment handling. 78 - IP checksum error fixed for ftp transfers 79 from aliasing host. 80 - Integer return codes added to all 81 aliasing/de-aliasing functions. 82 - Some obsolete comments cleaned up. 83 - Differential checksum computations for 84 IP header (TCP, UDP and ICMP were already 85 differential). | 77 - Out-of-order fragment handling. 78 - IP checksum error fixed for ftp transfers 79 from aliasing host. 80 - Integer return codes added to all 81 aliasing/de-aliasing functions. 82 - Some obsolete comments cleaned up. 83 - Differential checksum computations for 84 IP header (TCP, UDP and ICMP were already 85 differential). |
| 86 87 Version 2.1 May 1997 (cjm) | 86 87 Version 2.1 May 1997 (cjm) |
| 88 - Added support for outgoing ICMP error 89 messages. 90 - Added two functions PacketAliasIn2() 91 and PacketAliasOut2() for dynamic address 92 control (e.g. round-robin allocation of 93 incoming packets). | 88 - Added support for outgoing ICMP error 89 messages. 90 - Added two functions PacketAliasIn2() 91 and PacketAliasOut2() for dynamic address 92 control (e.g. round-robin allocation of 93 incoming packets). |
| 94 95 Version 2.2 July 1997 (cjm) | 94 95 Version 2.2 July 1997 (cjm) |
| 96 - Rationalized API function names to begin 97 with "PacketAlias..." 98 - Eliminated PacketAliasIn2() and 99 PacketAliasOut2() as poorly conceived. | 96 - Rationalized API function names to begin 97 with "PacketAlias..." 98 - Eliminated PacketAliasIn2() and 99 PacketAliasOut2() as poorly conceived. |
| 100 101 Version 2.3 Dec 1998 (dillon) 102 - Major bounds checking additions, see FreeBSD/CVS 103 104 Version 3.1 May, 2000 (salander) 105 - Added hooks to handle PPTP. 106 107 Version 3.2 July, 2000 (salander and satoh) --- 966 unchanged lines hidden (view full) --- 1074 1075 1076 1077 1078 1079 1080/* Outside World Access 1081 | 100 101 Version 2.3 Dec 1998 (dillon) 102 - Major bounds checking additions, see FreeBSD/CVS 103 104 Version 3.1 May, 2000 (salander) 105 - Added hooks to handle PPTP. 106 107 Version 3.2 July, 2000 (salander and satoh) --- 966 unchanged lines hidden (view full) --- 1074 1075 1076 1077 1078 1079 1080/* Outside World Access 1081 |
| 1082 PacketAliasSaveFragment() 1083 PacketAliasGetFragment() 1084 PacketAliasFragmentIn() 1085 PacketAliasIn() 1086 PacketAliasOut() 1087 PacketUnaliasOut() | 1082 PacketAliasSaveFragment() 1083 PacketAliasGetFragment() 1084 PacketAliasFragmentIn() 1085 PacketAliasIn() 1086 PacketAliasOut() 1087 PacketUnaliasOut() |
| 1088 1089(prototypes in alias.h) 1090*/ 1091 1092 1093int 1094LibAliasSaveFragment(struct libalias *la, char *ptr) 1095{ --- 326 unchanged lines hidden --- | 1088 1089(prototypes in alias.h) 1090*/ 1091 1092 1093int 1094LibAliasSaveFragment(struct libalias *la, char *ptr) 1095{ --- 326 unchanged lines hidden --- |