diff options
Diffstat (limited to 'contrib/ipfilter/ip_netbios_pxy.c')
| -rw-r--r-- | contrib/ipfilter/ip_netbios_pxy.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/contrib/ipfilter/ip_netbios_pxy.c b/contrib/ipfilter/ip_netbios_pxy.c deleted file mode 100644 index 0ff6d25..0000000 --- a/contrib/ipfilter/ip_netbios_pxy.c +++ /dev/null @@ -1,122 +0,0 @@ -/* $NetBSD$ */ - -/* - * Simple netbios-dgm transparent proxy for in-kernel use. - * For use with the NAT code. - * Id: ip_netbios_pxy.c,v 2.8 2003/12/01 02:52:16 darrenr Exp - */ - -/*- - * Copyright (c) 2002-2003 Paul J. Ledbetter III - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * Id: ip_netbios_pxy.c,v 2.8 2003/12/01 02:52:16 darrenr Exp - */ - -#define IPF_NETBIOS_PROXY - -int ippr_netbios_init __P((void)); -void ippr_netbios_fini __P((void)); -int ippr_netbios_out __P((fr_info_t *, ap_session_t *, nat_t *)); - -static frentry_t netbiosfr; - -int netbios_proxy_init = 0; - -/* - * Initialize local structures. - */ -int ippr_netbios_init() -{ - bzero((char *)&netbiosfr, sizeof(netbiosfr)); - netbiosfr.fr_ref = 1; - netbiosfr.fr_flags = FR_INQUE|FR_PASS|FR_QUICK|FR_KEEPSTATE; - MUTEX_INIT(&netbiosfr.fr_lock, "NETBIOS proxy rule lock"); - netbios_proxy_init = 1; - - return 0; -} - - -void ippr_netbios_fini() -{ - if (netbios_proxy_init == 1) { - MUTEX_DESTROY(&netbiosfr.fr_lock); - netbios_proxy_init = 0; - } -} - - -int ippr_netbios_out(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - char dgmbuf[6]; - int off, dlen; - udphdr_t *udp; - ip_t *ip; - mb_t *m; - - aps = aps; /* LINT */ - nat = nat; /* LINT */ - - ip = fin->fin_ip; - m = *(mb_t **)fin->fin_mp; - off = fin->fin_hlen + sizeof(udphdr_t); - dlen = M_LEN(m); - dlen -= off; - - /* - * no net bios datagram could possibly be shorter than this - */ - if (dlen < 11) - return 0; - - udp = (udphdr_t *)fin->fin_dp; - - /* - * move past the - * ip header; - * udp header; - * 4 bytes into the net bios dgm header. - * According to rfc1002, this should be the exact location of - * the source address/port - */ - off += 4; - - /* Copy NATed source Address/port*/ - dgmbuf[0] = (char)((ip->ip_src.s_addr ) &0xFF); - dgmbuf[1] = (char)((ip->ip_src.s_addr >> 8) &0xFF); - dgmbuf[2] = (char)((ip->ip_src.s_addr >> 16)&0xFF); - dgmbuf[3] = (char)((ip->ip_src.s_addr >> 24)&0xFF); - - dgmbuf[4] = (char)((udp->uh_sport )&0xFF); - dgmbuf[5] = (char)((udp->uh_sport >> 8)&0xFF); - - /* replace data in packet */ - COPYBACK(m, off, sizeof(dgmbuf), dgmbuf); - - return 0; -} |
