| alias.c (116315) | alias.c (120372) |
|---|---|
| 1/* -*- mode: c; tab-width: 8; c-basic-indent: 4; -*- */ 2 3/*- 4 * Copyright (c) 2001 Charles Mott <cm@linktel.net> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 13 unchanged lines hidden (view full) --- 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> | 1/* -*- mode: c; tab-width: 8; c-basic-indent: 4; -*- */ 2 3/*- 4 * Copyright (c) 2001 Charles Mott <cm@linktel.net> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 13 unchanged lines hidden (view full) --- 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> |
| 30__FBSDID("$FreeBSD: head/sys/netinet/libalias/alias.c 116315 2003-06-13 21:54:01Z ru $"); | 30__FBSDID("$FreeBSD: head/sys/netinet/libalias/alias.c 120372 2003-09-23 07:41:55Z marcus $"); |
| 31 32/* 33 Alias.c provides supervisory control for the functions of the 34 packet aliasing software. It consists of routines to monitor 35 TCP connection state, protocol-specific aliasing routines, 36 fragment handling and the following outside world functional 37 interfaces: SaveFragmentPtr, GetFragmentPtr, FragmentAliasIn, 38 PacketAliasIn and PacketAliasOut. --- 873 unchanged lines hidden (view full) --- 912 u_short proxy_port; 913 int accumulate; 914 u_short *sptr; 915 916/* Special processing for IP encoding protocols */ 917 if (ntohs(tc->th_dport) == PPTP_CONTROL_PORT_NUMBER 918 || ntohs(tc->th_sport) == PPTP_CONTROL_PORT_NUMBER) 919 AliasHandlePptpIn(pip, link); | 31 32/* 33 Alias.c provides supervisory control for the functions of the 34 packet aliasing software. It consists of routines to monitor 35 TCP connection state, protocol-specific aliasing routines, 36 fragment handling and the following outside world functional 37 interfaces: SaveFragmentPtr, GetFragmentPtr, FragmentAliasIn, 38 PacketAliasIn and PacketAliasOut. --- 873 unchanged lines hidden (view full) --- 912 u_short proxy_port; 913 int accumulate; 914 u_short *sptr; 915 916/* Special processing for IP encoding protocols */ 917 if (ntohs(tc->th_dport) == PPTP_CONTROL_PORT_NUMBER 918 || ntohs(tc->th_sport) == PPTP_CONTROL_PORT_NUMBER) 919 AliasHandlePptpIn(pip, link); |
| 920 else if (skinnyPort != 0 && (ntohs(tc->th_dport) == skinnyPort 921 || ntohs(tc->th_sport) == skinnyPort)) 922 AliasHandleSkinny(pip, link); |
|
| 920 921 alias_address = GetAliasAddress(link); 922 original_address = GetOriginalAddress(link); 923 proxy_address = GetProxyAddress(link); 924 alias_port = tc->th_dport; 925 tc->th_dport = GetOriginalPort(link); 926 proxy_port = GetProxyPort(link); 927 --- 165 unchanged lines hidden (view full) --- 1093 else if (ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_1 1094 || ntohs(tc->th_sport) == RTSP_CONTROL_PORT_NUMBER_1 1095 || ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_2 1096 || ntohs(tc->th_sport) == RTSP_CONTROL_PORT_NUMBER_2) 1097 AliasHandleRtspOut(pip, link, maxpacketsize); 1098 else if (ntohs(tc->th_dport) == PPTP_CONTROL_PORT_NUMBER 1099 || ntohs(tc->th_sport) == PPTP_CONTROL_PORT_NUMBER) 1100 AliasHandlePptpOut(pip, link); | 923 924 alias_address = GetAliasAddress(link); 925 original_address = GetOriginalAddress(link); 926 proxy_address = GetProxyAddress(link); 927 alias_port = tc->th_dport; 928 tc->th_dport = GetOriginalPort(link); 929 proxy_port = GetProxyPort(link); 930 --- 165 unchanged lines hidden (view full) --- 1096 else if (ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_1 1097 || ntohs(tc->th_sport) == RTSP_CONTROL_PORT_NUMBER_1 1098 || ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_2 1099 || ntohs(tc->th_sport) == RTSP_CONTROL_PORT_NUMBER_2) 1100 AliasHandleRtspOut(pip, link, maxpacketsize); 1101 else if (ntohs(tc->th_dport) == PPTP_CONTROL_PORT_NUMBER 1102 || ntohs(tc->th_sport) == PPTP_CONTROL_PORT_NUMBER) 1103 AliasHandlePptpOut(pip, link); |
| 1104 else if (skinnyPort != 0 && (ntohs(tc->th_sport) == skinnyPort 1105 || ntohs(tc->th_dport) == skinnyPort)) 1106 AliasHandleSkinny(pip, link); |
|
| 1101 1102/* Adjust TCP checksum since source port is being aliased */ 1103/* and source address is being altered */ 1104 accumulate = tc->th_sport; 1105 tc->th_sport = alias_port; 1106 accumulate -= tc->th_sport; 1107 1108 sptr = (u_short *) &(pip->ip_src); --- 478 unchanged lines hidden --- | 1107 1108/* Adjust TCP checksum since source port is being aliased */ 1109/* and source address is being altered */ 1110 accumulate = tc->th_sport; 1111 tc->th_sport = alias_port; 1112 accumulate -= tc->th_sport; 1113 1114 sptr = (u_short *) &(pip->ip_src); --- 478 unchanged lines hidden --- |