diff options
Diffstat (limited to 'contrib/ipfilter/ip_netbios_pxy.c')
| -rw-r--r-- | contrib/ipfilter/ip_netbios_pxy.c | 53 |
1 files changed, 33 insertions, 20 deletions
diff --git a/contrib/ipfilter/ip_netbios_pxy.c b/contrib/ipfilter/ip_netbios_pxy.c index ee9b0c4..0ff6d25 100644 --- a/contrib/ipfilter/ip_netbios_pxy.c +++ b/contrib/ipfilter/ip_netbios_pxy.c @@ -1,11 +1,13 @@ +/* $NetBSD$ */ + /* * Simple netbios-dgm transparent proxy for in-kernel use. * For use with the NAT code. - * $Id: ip_netbios_pxy.c,v 1.1.2.3 2002/01/09 09:28:37 darrenr Exp $ + * Id: ip_netbios_pxy.c,v 2.8 2003/12/01 02:52:16 darrenr Exp */ /*- - * Copyright (c) 2002 Paul J. Ledbetter III + * Copyright (c) 2002-2003 Paul J. Ledbetter III * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -29,16 +31,19 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: ip_netbios_pxy.c,v 1.1.2.3 2002/01/09 09:28:37 darrenr Exp $ + * 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)); -int ippr_netbios_out __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *)); +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. */ @@ -47,43 +52,55 @@ 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; } -int ippr_netbios_out(fin, ip, aps, nat) + +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; -ip_t *ip; 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); -#if SOLARIS - dlen = msgdsize(m); -#else - dlen = mbufchainlen(m); -#endif + dlen = M_LEN(m); dlen -= off; /* * no net bios datagram could possibly be shorter than this */ - if (dlen < 11) + 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. + * 4 bytes into the net bios dgm header. * According to rfc1002, this should be the exact location of * the source address/port */ @@ -99,11 +116,7 @@ nat_t *nat; dgmbuf[5] = (char)((udp->uh_sport >> 8)&0xFF); /* replace data in packet */ -#if SOLARIS - copyin_mblk(m, off, sizeof(dgmbuf), dgmbuf); -#else - m_copyback(m, off, sizeof(dgmbuf), dgmbuf); -#endif + COPYBACK(m, off, sizeof(dgmbuf), dgmbuf); return 0; } |
