diff --git a/sys/netinet/ip_h323_pxy.c b/sys/netinet/ip_h323_pxy.c deleted file mode 100644 index 3669561eeaa7..000000000000 --- a/sys/netinet/ip_h323_pxy.c +++ /dev/null @@ -1,302 +0,0 @@ -/* $NetBSD: ip_h323_pxy.c,v 1.10 2004/07/23 05:39:04 martti Exp $ */ - -/* - * Copyright 2001, QNX Software Systems Ltd. All Rights Reserved - * - * This source code has been published by QNX Software Systems Ltd. (QSSL). - * However, any use, reproduction, modification, distribution or transfer of - * this software, or any software which includes or is based upon any of this - * code, is only permitted under the terms of the QNX Open Community License - * version 1.0 (see licensing.qnx.com for details) or as otherwise expressly - * authorized by a written license agreement from QSSL. For more information, - * please email licensing@qnx.com. - * - * For more details, see QNX_OCL.txt provided with this distribution. - */ - -/* - * Simple H.323 proxy - * - * by xtang@canada.com - * ported to ipfilter 3.4.20 by Michael Grant mg-ipf@grant.org - */ - -#if __FreeBSD_version >= 220000 && defined(_KERNEL) -# include -# include -#else -# ifndef linux -# include -# endif -#endif - -#ifdef _KERNEL_OPT -#include "opt_ipfilter_log.h" -#endif - -__KERNEL_RCSID(1, "$NetBSD: ip_h323_pxy.c,v 1.10 2004/07/23 05:39:04 martti Exp $"); - -#define IPF_H323_PROXY - -int ippr_h323_init __P((void)); -void ippr_h323_fini __P((void)); -int ippr_h323_new __P((fr_info_t *, ap_session_t *, nat_t *)); -void ippr_h323_del __P((ap_session_t *)); -int ippr_h323_out __P((fr_info_t *, ap_session_t *, nat_t *)); -int ippr_h323_in __P((fr_info_t *, ap_session_t *, nat_t *)); - -int ippr_h245_new __P((fr_info_t *, ap_session_t *, nat_t *)); -int ippr_h245_out __P((fr_info_t *, ap_session_t *, nat_t *)); -int ippr_h245_in __P((fr_info_t *, ap_session_t *, nat_t *)); - -static frentry_t h323_fr; - -int h323_proxy_init = 0; - -static int find_port __P((int, caddr_t, int datlen, int *, u_short *)); - - -static int find_port(ipaddr, data, datlen, off, port) -int ipaddr; -caddr_t data; -int datlen, *off; -unsigned short *port; -{ - u_32_t addr, netaddr; - u_char *dp; - int offset; - - if (datlen < 6) - return -1; - - *port = 0; - offset = *off; - dp = (u_char *)data; - netaddr = ntohl(ipaddr); - - for (offset = 0; offset <= datlen - 6; offset++, dp++) { - addr = (dp[0] << 24) | (dp[1] << 16) | (dp[2] << 8) | dp[3]; - if (netaddr == addr) - { - *port = (*(dp + 4) << 8) | *(dp + 5); - break; - } - } - *off = offset; - return (offset > datlen - 6) ? -1 : 0; -} - -/* - * Initialize local structures. - */ -int ippr_h323_init() -{ - bzero((char *)&h323_fr, sizeof(h323_fr)); - h323_fr.fr_ref = 1; - h323_fr.fr_flags = FR_INQUE|FR_PASS|FR_QUICK|FR_KEEPSTATE; - MUTEX_INIT(&h323_fr.fr_lock, "H323 proxy rule lock"); - h323_proxy_init = 1; - - return 0; -} - - -void ippr_h323_fini() -{ - if (h323_proxy_init == 1) { - MUTEX_DESTROY(&h323_fr.fr_lock); - h323_proxy_init = 0; - } -} - - -int ippr_h323_new(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - fin = fin; /* LINT */ - nat = nat; /* LINT */ - - aps->aps_data = NULL; - aps->aps_psiz = 0; - - return 0; -} - - -void ippr_h323_del(aps) -ap_session_t *aps; -{ - int i; - ipnat_t *ipn; - - if (aps->aps_data) { - for (i = 0, ipn = aps->aps_data; - i < (aps->aps_psiz / sizeof(ipnat_t)); - i++, ipn = (ipnat_t *)((char *)ipn + sizeof(*ipn))) - { - /* - * Check the comment in ippr_h323_in() function, - * just above fr_nat_ioctl() call. - * We are lucky here because this function is not - * called with ipf_nat locked. - */ - if (fr_nat_ioctl((caddr_t)ipn, SIOCRMNAT, NAT_SYSSPACE| - NAT_LOCKHELD|FWRITE) == -1) { - /*EMPTY*/; - /* log the error */ - } - } - KFREES(aps->aps_data, aps->aps_psiz); - /* avoid double free */ - aps->aps_data = NULL; - aps->aps_psiz = 0; - } - return; -} - - -int ippr_h323_in(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - int ipaddr, off, datlen; - unsigned short port; - caddr_t data; - tcphdr_t *tcp; - ip_t *ip; - - ip = fin->fin_ip; - tcp = (tcphdr_t *)fin->fin_dp; - ipaddr = ip->ip_src.s_addr; - - data = (caddr_t)tcp + (TCP_OFF(tcp) << 2); - datlen = fin->fin_dlen - (TCP_OFF(tcp) << 2); - if (find_port(ipaddr, data, datlen, &off, &port) == 0) { - ipnat_t *ipn; - char *newarray; - - /* setup a nat rule to set a h245 proxy on tcp-port "port" - * it's like: - * map / -> / proxy port /tcp - */ - KMALLOCS(newarray, char *, aps->aps_psiz + sizeof(*ipn)); - if (newarray == NULL) { - return -1; - } - ipn = (ipnat_t *)&newarray[aps->aps_psiz]; - bcopy((caddr_t)nat->nat_ptr, (caddr_t)ipn, sizeof(ipnat_t)); - (void) strncpy(ipn->in_plabel, "h245", APR_LABELLEN); - - ipn->in_inip = nat->nat_inip.s_addr; - ipn->in_inmsk = 0xffffffff; - ipn->in_dport = htons(port); - /* - * we got a problem here. we need to call fr_nat_ioctl() to add - * the h245 proxy rule, but since we already hold (READ locked) - * the nat table rwlock (ipf_nat), if we go into fr_nat_ioctl(), - * it will try to WRITE lock it. This will causing dead lock - * on RTP. - * - * The quick & dirty solution here is release the read lock, - * call fr_nat_ioctl() and re-lock it. - * A (maybe better) solution is do a UPGRADE(), and instead - * of calling fr_nat_ioctl(), we add the nat rule ourself. - */ - RWLOCK_EXIT(&ipf_nat); - if (fr_nat_ioctl((caddr_t)ipn, SIOCADNAT, - NAT_SYSSPACE|FWRITE) == -1) { - READ_ENTER(&ipf_nat); - return -1; - } - READ_ENTER(&ipf_nat); - if (aps->aps_data != NULL && aps->aps_psiz > 0) { - bcopy(aps->aps_data, newarray, aps->aps_psiz); - KFREES(aps->aps_data, aps->aps_psiz); - } - aps->aps_data = newarray; - aps->aps_psiz += sizeof(*ipn); - } - return 0; -} - - -int ippr_h245_new(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - fin = fin; /* LINT */ - nat = nat; /* LINT */ - - aps->aps_data = NULL; - aps->aps_psiz = 0; - return 0; -} - - -int ippr_h245_out(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - int ipaddr, off, datlen; - tcphdr_t *tcp; - caddr_t data; - u_short port; - ip_t *ip; - - aps = aps; /* LINT */ - - ip = fin->fin_ip; - tcp = (tcphdr_t *)fin->fin_dp; - ipaddr = nat->nat_inip.s_addr; - data = (caddr_t)tcp + (TCP_OFF(tcp) << 2); - datlen = ip->ip_len - fin->fin_hlen - (TCP_OFF(tcp) << 2); - if (find_port(ipaddr, data, datlen, &off, &port) == 0) { - fr_info_t fi; - nat_t *nat2; - -/* port = htons(port); */ - nat2 = nat_outlookup(fin->fin_ifp, IPN_UDP, IPPROTO_UDP, - ip->ip_src, ip->ip_dst); - if (nat2 == NULL) { - struct ip newip; - struct udphdr udp; - - bcopy((caddr_t)ip, (caddr_t)&newip, sizeof(newip)); - newip.ip_len = fin->fin_hlen + sizeof(udp); - newip.ip_p = IPPROTO_UDP; - newip.ip_src = nat->nat_inip; - - bzero((char *)&udp, sizeof(udp)); - udp.uh_sport = port; - - bcopy((caddr_t)fin, (caddr_t)&fi, sizeof(fi)); - fi.fin_fi.fi_p = IPPROTO_UDP; - fi.fin_data[0] = port; - fi.fin_data[1] = 0; - fi.fin_dp = (char *)&udp; - - nat2 = nat_new(&fi, nat->nat_ptr, NULL, - NAT_SLAVE|IPN_UDP|SI_W_DPORT, - NAT_OUTBOUND); - if (nat2 != NULL) { - (void) nat_proto(&fi, nat2, IPN_UDP); - nat_update(&fi, nat2, nat2->nat_ptr); - - nat2->nat_ptr->in_hits++; -#ifdef IPFILTER_LOG - nat_log(nat2, (u_int)(nat->nat_ptr->in_redir)); -#endif - bcopy((caddr_t)&ip->ip_src.s_addr, - data + off, 4); - bcopy((caddr_t)&nat2->nat_outport, - data + off + 4, 2); - } - } - } - return 0; -} diff --git a/sys/netinet/ip_netbios_pxy.c b/sys/netinet/ip_netbios_pxy.c deleted file mode 100644 index 00ab0ded55a2..000000000000 --- a/sys/netinet/ip_netbios_pxy.c +++ /dev/null @@ -1,124 +0,0 @@ -/* $NetBSD: ip_netbios_pxy.c,v 1.5 2004/03/28 09:00:57 martti Exp $ */ - -/* - * 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 - */ - -__KERNEL_RCSID(1, "$NetBSD: ip_netbios_pxy.c,v 1.5 2004/03/28 09:00:57 martti 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; -} diff --git a/sys/netinet/ip_pptp_pxy.c b/sys/netinet/ip_pptp_pxy.c deleted file mode 100644 index 8746cc14f727..000000000000 --- a/sys/netinet/ip_pptp_pxy.c +++ /dev/null @@ -1,271 +0,0 @@ -/* $NetBSD: ip_pptp_pxy.c,v 1.1.1.2 2004/07/23 05:35:04 martti Exp $ */ - -/* - * Copyright (C) 2002-2003 by Darren Reed - * - * Simple PPTP transparent proxy for in-kernel use. For use with the NAT - * code. - * - * Id: ip_pptp_pxy.c,v 2.10.2.5 2004/06/07 14:20:05 darrenr Exp - * - */ -#define IPF_PPTP_PROXY - -typedef struct pptp_pxy { - ipnat_t pptp_rule; - nat_t *pptp_nat; - ipstate_t *pptp_state; - int pptp_seencookie; - u_32_t pptp_cookie; -} pptp_pxy_t; - - -int ippr_pptp_init __P((void)); -void ippr_pptp_fini __P((void)); -int ippr_pptp_new __P((fr_info_t *, ap_session_t *, nat_t *)); -void ippr_pptp_del __P((ap_session_t *)); -int ippr_pptp_inout __P((fr_info_t *, ap_session_t *, nat_t *)); -int ippr_pptp_match __P((fr_info_t *, ap_session_t *, nat_t *)); - -static frentry_t pptpfr; - -int pptp_proxy_init = 0; - - -/* - * PPTP application proxy initialization. - */ -int ippr_pptp_init() -{ - bzero((char *)&pptpfr, sizeof(pptpfr)); - pptpfr.fr_ref = 1; - pptpfr.fr_flags = FR_OUTQUE|FR_PASS|FR_QUICK|FR_KEEPSTATE; - MUTEX_INIT(&pptpfr.fr_lock, "PPTP proxy rule lock"); - pptp_proxy_init = 1; - - return 0; -} - - -void ippr_pptp_fini() -{ - if (pptp_proxy_init == 1) { - MUTEX_DESTROY(&pptpfr.fr_lock); - pptp_proxy_init = 0; - } -} - - -/* - * Setup for a new PPTP proxy. - */ -int ippr_pptp_new(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - pptp_pxy_t *pptp; - fr_info_t fi; - ipnat_t *ipn; - nat_t *nat2; - int p, off; - ip_t *ip; - - ip = fin->fin_ip; - off = fin->fin_hlen + sizeof(udphdr_t); - - if (nat_outlookup(fin, 0, IPPROTO_GRE, nat->nat_inip, - ip->ip_dst) != NULL) - return -1; - - aps->aps_psiz = sizeof(*pptp); - KMALLOCS(aps->aps_data, pptp_pxy_t *, sizeof(*pptp)); - if (aps->aps_data == NULL) - return -1; - - ip = fin->fin_ip; - pptp = aps->aps_data; - bzero((char *)pptp, sizeof(*pptp)); - - /* - * Create NAT rule against which the tunnel/transport mapping is - * created. This is required because the current NAT rule does not - * describe GRE but TCP instead. - */ - ipn = &pptp->pptp_rule; - ipn->in_ifps[0] = fin->fin_ifp; - ipn->in_apr = NULL; - ipn->in_use = 1; - ipn->in_hits = 1; - ipn->in_nip = ntohl(nat->nat_outip.s_addr); - ipn->in_ippip = 1; - ipn->in_inip = nat->nat_inip.s_addr; - ipn->in_inmsk = 0xffffffff; - ipn->in_outip = fin->fin_saddr; - ipn->in_outmsk = nat->nat_outip.s_addr; - ipn->in_srcip = fin->fin_saddr; - ipn->in_srcmsk = 0xffffffff; - ipn->in_redir = NAT_MAP; - bcopy(nat->nat_ptr->in_ifnames[0], ipn->in_ifnames[0], - sizeof(ipn->in_ifnames[0])); - ipn->in_p = IPPROTO_GRE; - - bcopy((char *)fin, (char *)&fi, sizeof(fi)); - fi.fin_fi.fi_p = IPPROTO_GRE; - fi.fin_fr = &pptpfr; - fi.fin_data[0] = 0; - fi.fin_data[1] = 0; - p = ip->ip_p; - ip->ip_p = IPPROTO_GRE; - fi.fin_flx &= ~FI_TCPUDP; - fi.fin_flx |= FI_IGNORE; - - nat2 = nat_new(&fi, ipn, &pptp->pptp_nat, 0, NAT_OUTBOUND); - pptp->pptp_nat = nat2; - if (nat2 != NULL) { - (void) nat_proto(&fi, nat2, 0); - nat_update(&fi, nat2, nat2->nat_ptr); - - fi.fin_data[0] = 0; - fi.fin_data[1] = 0; - pptp->pptp_state = fr_addstate(&fi, &pptp->pptp_state, 0); - } - ip->ip_p = p; - return 0; -} - - -/* - * For outgoing PPTP packets. refresh timeouts for NAT & state entries, if - * we can. If they have disappeared, recreate them. - */ -int ippr_pptp_inout(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - pptp_pxy_t *pptp; - fr_info_t fi; - nat_t *nat2; - ip_t *ip; - int p; - - if ((fin->fin_out == 1) && (nat->nat_dir == NAT_INBOUND)) - return 0; - - if ((fin->fin_out == 0) && (nat->nat_dir == NAT_OUTBOUND)) - return 0; - - pptp = aps->aps_data; - - if (pptp != NULL) { - ip = fin->fin_ip; - p = ip->ip_p; - - if ((pptp->pptp_nat == NULL) || (pptp->pptp_state == NULL)) { - bcopy((char *)fin, (char *)&fi, sizeof(fi)); - fi.fin_fi.fi_p = IPPROTO_GRE; - fi.fin_fr = &pptpfr; - fi.fin_data[0] = 0; - fi.fin_data[1] = 0; - ip->ip_p = IPPROTO_GRE; - fi.fin_flx &= ~FI_TCPUDP; - fi.fin_flx |= FI_IGNORE; - } - - /* - * Update NAT timeout/create NAT if missing. - */ - if (pptp->pptp_nat != NULL) - fr_queueback(&pptp->pptp_nat->nat_tqe); - else { - nat2 = nat_new(&fi, &pptp->pptp_rule, &pptp->pptp_nat, - NAT_SLAVE, nat->nat_dir); - pptp->pptp_nat = nat2; - if (nat2 != NULL) { - (void) nat_proto(&fi, nat2, 0); - nat_update(&fi, nat2, nat2->nat_ptr); - } - } - - /* - * Update state timeout/create state if missing. - */ - READ_ENTER(&ipf_state); - if (pptp->pptp_state != NULL) { - fr_queueback(&pptp->pptp_state->is_sti); - RWLOCK_EXIT(&ipf_state); - } else { - RWLOCK_EXIT(&ipf_state); - fi.fin_data[0] = 0; - fi.fin_data[1] = 0; - pptp->pptp_state = fr_addstate(&fi, &pptp->pptp_state, - 0); - } - ip->ip_p = p; - } - return 0; -} - - -/* - * clean up after ourselves. - */ -void ippr_pptp_del(aps) -ap_session_t *aps; -{ - pptp_pxy_t *pptp; - - pptp = aps->aps_data; - - if (pptp != NULL) { - /* - * Don't bother changing any of the NAT structure details, - * *_del() is on a callback from aps_free(), from nat_delete() - */ - - READ_ENTER(&ipf_state); - if (pptp->pptp_state != NULL) { - pptp->pptp_state->is_die = fr_ticks + 1; - pptp->pptp_state->is_me = NULL; - fr_queuefront(&pptp->pptp_state->is_sti); - } - RWLOCK_EXIT(&ipf_state); - - pptp->pptp_state = NULL; - pptp->pptp_nat = NULL; - } -} - - -int ippr_pptp_match(fin, aps, nat) -fr_info_t *fin; -ap_session_t *aps; -nat_t *nat; -{ - pptp_pxy_t *pptp; - tcphdr_t *tcp; - u_32_t cookie; - - pptp = aps->aps_data; - tcp = fin->fin_dp; - - if ((pptp != NULL) && (fin->fin_dlen - (TCP_OFF(tcp) << 2) >= 8)) { - u_char *cs; - - cs = (u_char *)tcp + (TCP_OFF(tcp) << 2) + 4; - - if (pptp->pptp_seencookie == 0) { - pptp->pptp_seencookie = 1; - pptp->pptp_cookie = (cs[0] << 24) | (cs[1] << 16) | - (cs[2] << 8) | cs[3]; - } else { - cookie = (cs[0] << 24) | (cs[1] << 16) | - (cs[2] << 8) | cs[3]; - if (cookie != pptp->pptp_cookie) - return -1; - } - - } - return 0; -}