libalias: retire cuseeme support
The CU-SeeMe videoconferencing client and associated protocol is at this point a historical artifact; there is no need to retain support for this protocol today. Reviewed by: philip, markj, allanjude Relnotes: Yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D24790
This commit is contained in:
Ed Maste
parent
5add701776
commit
65a1d63665
@ -36,6 +36,11 @@
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# xargs -n1 | sort | uniq -d;
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# done
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# 20200515: libalias cuseeme protocol support retired
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OLD_LIBS+=lib/libalias_cuseeme.so
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OLD_FILES+=usr/lib/libalias_cuseeme.a
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OLD_FILES+=usr/lib/libalias_cuseeme_p.a
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# 20200511: Remove ubsec(4)
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OLD_FILES+=usr/share/man/man4/ubsec.4.gz
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@ -1,5 +1,4 @@
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# $FreeBSD$
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/lib/libalias_cuseeme.so
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/lib/libalias_ftp.so
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/lib/libalias_irc.so
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/lib/libalias_nbt.so
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@ -1,6 +0,0 @@
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# $FreeBSD$
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NAME= cuseeme
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SRCS= alias_cuseeme.c
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.include <bsd.lib.mk>
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@ -1,17 +0,0 @@
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# $FreeBSD$
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# Autogenerated - do NOT edit!
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DIRDEPS = \
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gnu/lib/csu \
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include \
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include/xlocale \
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lib/${CSU_DIR} \
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lib/libc \
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lib/libcompiler_rt \
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.include <dirdeps.mk>
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.if ${DEP_RELDIR} == ${_DEP_RELDIR}
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# local dependencies - needed for -jN in clean tree
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.endif
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@ -1,6 +0,0 @@
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# $FreeBSD$
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KMOD= alias_cuseeme
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SRCS= alias_cuseeme.c
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.include <bsd.kmod.mk>
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@ -1,7 +1,6 @@
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# $FreeBSD$
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MODULES =
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MODULES += cuseeme
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MODULES += dummy
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MODULES += ftp
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MODULES += irc
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@ -1,230 +0,0 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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* with the aid of code written by
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* Junichi SATOH <junichi@astec.co.jp> 1996, 1997.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifdef _KERNEL
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#else
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#include <errno.h>
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#include <sys/types.h>
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#include <stdio.h>
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#endif
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#include <netinet/in_systm.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#ifdef _KERNEL
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#include <netinet/libalias/alias.h>
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#include <netinet/libalias/alias_local.h>
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#include <netinet/libalias/alias_mod.h>
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#else
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#include "alias_local.h"
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#include "alias_mod.h"
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#endif
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#define CUSEEME_PORT_NUMBER 7648
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static void
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AliasHandleCUSeeMeOut(struct libalias *la, struct ip *pip,
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struct alias_link *lnk);
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static void
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AliasHandleCUSeeMeIn(struct libalias *la, struct ip *pip,
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struct in_addr original_addr);
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static int
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fingerprint(struct libalias *la, struct alias_data *ah)
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{
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if (ah->dport == NULL || ah->oaddr == NULL)
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return (-1);
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if (ntohs(*ah->dport) == CUSEEME_PORT_NUMBER)
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return (0);
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return (-1);
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}
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static int
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protohandlerin(struct libalias *la, struct ip *pip, struct alias_data *ah)
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{
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AliasHandleCUSeeMeIn(la, pip, *ah->oaddr);
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return (0);
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}
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static int
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protohandlerout(struct libalias *la, struct ip *pip, struct alias_data *ah)
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{
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AliasHandleCUSeeMeOut(la, pip, ah->lnk);
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return (0);
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}
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/* Kernel module definition. */
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struct proto_handler handlers[] = {
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{
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.pri = 120,
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.dir = OUT,
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.proto = UDP,
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.fingerprint = &fingerprint,
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.protohandler = &protohandlerout
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},
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{
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.pri = 120,
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.dir = IN,
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.proto = UDP,
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.fingerprint = &fingerprint,
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.protohandler = &protohandlerin
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},
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{ EOH }
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};
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static int
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mod_handler(module_t mod, int type, void *data)
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{
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int error;
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switch (type) {
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case MOD_LOAD:
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error = 0;
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LibAliasAttachHandlers(handlers);
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break;
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case MOD_UNLOAD:
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error = 0;
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LibAliasDetachHandlers(handlers);
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break;
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default:
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error = EINVAL;
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}
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return (error);
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}
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#ifdef _KERNEL
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static
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#endif
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moduledata_t
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alias_mod = {
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"alias_cuseeme", mod_handler, NULL
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};
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#ifdef _KERNEL
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DECLARE_MODULE(alias_cuseeme, alias_mod, SI_SUB_DRIVERS, SI_ORDER_SECOND);
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MODULE_VERSION(alias_cuseeme, 1);
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MODULE_DEPEND(alias_cuseeme, libalias, 1, 1, 1);
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#endif
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/* CU-SeeMe Data Header */
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struct cu_header {
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u_int16_t dest_family;
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u_int16_t dest_port;
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u_int32_t dest_addr;
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int16_t family;
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u_int16_t port;
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u_int32_t addr;
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u_int32_t seq;
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u_int16_t msg;
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u_int16_t data_type;
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u_int16_t packet_len;
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};
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/* Open Continue Header */
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struct oc_header {
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u_int16_t client_count; /* Number of client info structs */
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u_int32_t seq_no;
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char user_name [20];
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char reserved [4]; /* flags, version stuff, etc */
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};
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/* client info structures */
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struct client_info {
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u_int32_t address;/* Client address */
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char reserved [8]; /* Flags, pruning bitfield, packet
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* counts etc */
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};
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static void
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AliasHandleCUSeeMeOut(struct libalias *la, struct ip *pip, struct alias_link *lnk)
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{
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struct udphdr *ud = ip_next(pip);
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if (ntohs(ud->uh_ulen) - sizeof(struct udphdr) >= sizeof(struct cu_header)) {
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struct cu_header *cu;
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struct alias_link *cu_lnk;
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cu = udp_next(ud);
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if (cu->addr)
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cu->addr = (u_int32_t) GetAliasAddress(lnk).s_addr;
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cu_lnk = FindUdpTcpOut(la, pip->ip_src, GetDestAddress(lnk),
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ud->uh_dport, 0, IPPROTO_UDP, 1);
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#ifndef NO_FW_PUNCH
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if (cu_lnk)
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PunchFWHole(cu_lnk);
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#endif
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}
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}
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static void
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AliasHandleCUSeeMeIn(struct libalias *la, struct ip *pip, struct in_addr original_addr)
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{
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struct in_addr alias_addr;
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struct udphdr *ud;
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struct cu_header *cu;
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struct oc_header *oc;
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struct client_info *ci;
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char *end;
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int i;
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(void)la;
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alias_addr.s_addr = pip->ip_dst.s_addr;
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ud = ip_next(pip);
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cu = udp_next(ud);
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oc = (struct oc_header *)(cu + 1);
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ci = (struct client_info *)(oc + 1);
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end = (char *)ud + ntohs(ud->uh_ulen);
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if ((char *)oc <= end) {
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if (cu->dest_addr)
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cu->dest_addr = (u_int32_t) original_addr.s_addr;
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if (ntohs(cu->data_type) == 101)
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/* Find and change our address */
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for (i = 0; (char *)(ci + 1) <= end && i < oc->client_count; i++, ci++)
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if (ci->address == (u_int32_t) alias_addr.s_addr) {
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ci->address = (u_int32_t) original_addr.s_addr;
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break;
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}
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}
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}
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@ -1051,7 +1051,6 @@ There is a configuration file,
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.Pa /etc/libalias.conf ,
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with the following contents (by default):
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.Bd -literal -offset indent
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/usr/lib/libalias_cuseeme.so
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/usr/lib/libalias_ftp.so
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/usr/lib/libalias_irc.so
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/usr/lib/libalias_nbt.so
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@ -26,7 +26,6 @@ DIRDEPS = \
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lib/geom/virstor \
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lib/lib80211 \
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lib/libalias/libalias \
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lib/libalias/modules/cuseeme \
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lib/libalias/modules/dummy \
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lib/libalias/modules/ftp \
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lib/libalias/modules/irc \
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@ -7531,7 +7531,6 @@ OLD_FILES+=usr/share/man/man8/pppctl.8.gz
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.if ${MK_PROFILE} == no
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OLD_FILES+=usr/lib/lib80211_p.a
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OLD_FILES+=usr/lib/libBlocksRuntime_p.a
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OLD_FILES+=usr/lib/libalias_cuseeme_p.a
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OLD_FILES+=usr/lib/libalias_dummy_p.a
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OLD_FILES+=usr/lib/libalias_ftp_p.a
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OLD_FILES+=usr/lib/libalias_irc_p.a
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