This commit was manufactured by cvs2svn to create branch 'DARRENR'.
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1951f11539
274
sys/netinet/ip_raudio_pxy.c
Normal file
274
sys/netinet/ip_raudio_pxy.c
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@ -0,0 +1,274 @@
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/*
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* $Id$
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* $FreeBSD$
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*/
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#if SOLARIS && defined(_KERNEL)
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extern kmutex_t ipf_rw;
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#endif
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#define IPF_RAUDIO_PROXY
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int ippr_raudio_init __P((void));
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int ippr_raudio_new __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *));
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int ippr_raudio_in __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *));
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int ippr_raudio_out __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *));
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static frentry_t raudiofr;
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/*
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* Real Audio application proxy initialization.
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*/
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int ippr_raudio_init()
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{
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bzero((char *)&raudiofr, sizeof(raudiofr));
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raudiofr.fr_ref = 1;
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raudiofr.fr_flags = FR_INQUE|FR_PASS|FR_QUICK|FR_KEEPSTATE;
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return 0;
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}
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/*
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* Setup for a new proxy to handle Real Audio.
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*/
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int ippr_raudio_new(fin, ip, aps, nat)
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fr_info_t *fin;
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ip_t *ip;
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ap_session_t *aps;
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nat_t *nat;
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{
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raudio_t *rap;
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KMALLOCS(aps->aps_data, void *, sizeof(raudio_t));
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if (aps->aps_data != NULL) {
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bzero(aps->aps_data, sizeof(raudio_t));
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rap = aps->aps_data;
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aps->aps_psiz = sizeof(raudio_t);
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rap->rap_mode = RAP_M_TCP; /* default is for TCP */
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}
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return 0;
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}
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int ippr_raudio_out(fin, ip, aps, nat)
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fr_info_t *fin;
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ip_t *ip;
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ap_session_t *aps;
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nat_t *nat;
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{
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char membuf[512 + 1], *s;
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int off, dlen, inc = 0;
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tcphdr_t *tcp, tcph, *tcp2 = &tcph;
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raudio_t *rap = aps->aps_data;
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u_short sp, dp, id = 0;
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struct in_addr swip;
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fr_info_t fi;
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int len = 0;
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nat_t *ipn;
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mb_t *m;
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#if SOLARIS
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mb_t *m1;
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#endif
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/*
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* If we've already processed the start messages, then nothing left
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* for the proxy to do.
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*/
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if (rap->rap_eos == 1)
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return 0;
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tcp = (tcphdr_t *)fin->fin_dp;
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off = (ip->ip_hl << 2) + (tcp->th_off << 2);
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bzero(membuf, sizeof(membuf));
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#if SOLARIS
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m = fin->fin_qfm;
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dlen = msgdsize(m) - off;
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if (dlen <= 0)
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return 0;
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copyout_mblk(m, off, MIN(sizeof(membuf), dlen), membuf);
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#else
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m = *(mb_t **)fin->fin_mp;
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dlen = mbufchainlen(m) - off;
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if (dlen <= 0)
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return 0;
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m_copydata(m, off, MIN(sizeof(membuf), dlen), membuf);
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#endif
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/*
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* In all the startup parsing, ensure that we don't go outside
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* the packet buffer boundary.
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*/
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/*
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* Look for the start of connection "PNA" string if not seen yet.
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*/
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if (rap->rap_seenpna == 0) {
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s = memstr("PNA", membuf, 3, dlen);
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if (s == NULL)
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return 0;
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s += 3;
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rap->rap_seenpna = 1;
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} else
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s = membuf;
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/*
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* Directly after the PNA will be the version number of this
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* connection.
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*/
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if (rap->rap_seenpna == 1 && rap->rap_seenver == 0) {
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if ((s + 1) - membuf < dlen) {
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rap->rap_version = (*s << 8) | *(s + 1);
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s += 2;
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rap->rap_seenver = 1;
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} else
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return 0;
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}
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/*
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* Now that we've been past the PNA and version number, we're into the
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* startup messages block. This ends when a message with an ID of 0.
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*/
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while ((rap->rap_eos == 0) && ((s + 1) - membuf < dlen)) {
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if (rap->rap_gotid == 0) {
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id = (*s << 8) | *(s + 1);
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s += 2;
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rap->rap_gotid = 1;
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if (id == RA_ID_END) {
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rap->rap_eos = 1;
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break;
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}
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} else if (rap->rap_gotlen == 0) {
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len = (*s << 8) | *(s + 1);
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s += 2;
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rap->rap_gotlen = 1;
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}
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if (rap->rap_gotid == 1 && rap->rap_gotlen == 1) {
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if (id == RA_ID_UDP) {
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rap->rap_mode &= ~RAP_M_TCP;
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rap->rap_mode |= RAP_M_UDP;
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rap->rap_plport = (*s << 8) | *(s + 1);
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} else if (id == RA_ID_ROBUST) {
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rap->rap_mode |= RAP_M_ROBUST;
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rap->rap_prport = (*s << 8) | *(s + 1);
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}
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s += len;
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rap->rap_gotlen = 0;
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rap->rap_gotid = 0;
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}
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}
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/*
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* Wait until we've seen the end of the start messages and even then
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* only proceed further if we're using UDP.
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*/
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if ((rap->rap_eos == 0) || ((rap->rap_mode & RAP_M_UDP) != RAP_M_UDP))
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return 0;
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sp = rap->rap_plport;
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dp = 0;
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bcopy((char *)fin, (char *)&fi, sizeof(fi));
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bzero((char *)tcp2, sizeof(*tcp2));
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tcp2->th_sport = htons(sp);
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tcp2->th_dport = 0; /* XXX - don't specify remote port */
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tcp2->th_win = htons(8192);
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fi.fin_dp = (char *)tcp2;
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fi.fin_data[0] = sp;
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fi.fin_data[1] = 0;
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fi.fin_fr = &raudiofr;
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swip = ip->ip_src;
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ip->ip_src = nat->nat_inip;
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ipn = nat_new(nat->nat_ptr, ip, &fi, IPN_TCP|FI_W_DPORT, NAT_OUTBOUND);
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if (ipn != NULL) {
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ipn->nat_age = fr_defnatage;
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(void) fr_addstate(ip, &fi, FI_W_DPORT);
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}
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ip->ip_src = swip;
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if ((rap->rap_mode & RAP_M_UDP_ROBUST) == RAP_M_UDP_ROBUST) {
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sp = rap->rap_prport;
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}
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return inc;
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}
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int ippr_raudio_in(fin, ip, aps, nat)
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fr_info_t *fin;
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ip_t *ip;
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ap_session_t *aps;
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nat_t *nat;
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{
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char membuf[IPF_MAXPORTLEN + 1], *s;
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int off, dlen;
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raudio_t *rap = aps->aps_data;
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u_int a1, a2, a3, a4;
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tcphdr_t *tcp;
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tcp_seq seq;
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mb_t *m;
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#if SOLARIS
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mb_t *m1;
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#endif
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if ((rap->rap_sdone != 0) ||
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((rap->rap_mode & RAP_M_UDP_ROBUST) != RAP_M_UDP_ROBUST))
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return 0;
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tcp = (tcphdr_t *)fin->fin_dp;
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off = (ip->ip_hl << 2) + (tcp->th_off << 2);
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m = *(mb_t **)fin->fin_mp;
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#if SOLARIS
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m = fin->fin_qfm;
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dlen = msgdsize(m) - off;
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if (dlen <= 0)
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return 0;
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bzero(membuf, sizeof(membuf));
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copyout_mblk(m, off, MIN(sizeof(membuf), dlen), membuf);
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#else
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dlen = mbufchainlen(m) - off;
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if (dlen <= 0)
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return 0;
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bzero(membuf, sizeof(membuf));
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m_copydata(m, off, MIN(sizeof(membuf), dlen), membuf);
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#endif
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seq = ntohl(tcp->th_seq);
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/*
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* Check to see if the data in this packet is of interest to us.
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* We only care for the first 19 bytes coming back from the server.
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*/
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if (rap->rap_sseq == 0) {
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s = memstr("PNA", membuf, 3, dlen);
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if (s == NULL)
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return 0;
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a1 = s - membuf;
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dlen -= a1;
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a1 = 0;
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rap->rap_sseq = seq;
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a2 = MIN(dlen, sizeof(rap->rap_svr));
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} else if (seq <= rap->rap_sseq + sizeof(rap->rap_svr)) {
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/*
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* seq # which is the start of data and from that the offset
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* into the buffer array.
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*/
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a1 = seq - rap->rap_sseq;
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a2 = MIN(dlen, sizeof(rap->rap_svr));
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a2 -= a1;
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s = membuf;
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} else
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return 0;
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for (a3 = a1, a4 = a2; a4 > 0; a4--, a3++) {
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rap->rap_sbf |= (1 << a3);
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rap->rap_svr[a3] = *s++;
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}
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if (rap->rap_sbf == 0x7ffff) { /* 19 bits */
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s = rap->rap_svr + 13;
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rap->rap_srport = (*s << 8) | *(s + 1);
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}
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return 0;
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}
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160
sys/netinet/ip_rcmd_pxy.c
Normal file
160
sys/netinet/ip_rcmd_pxy.c
Normal file
@ -0,0 +1,160 @@
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/*
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* $Id$
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* $FreeBSD$
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*/
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/*
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* Simple RCMD transparent proxy for in-kernel use. For use with the NAT
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* code.
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*/
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#if SOLARIS && defined(_KERNEL)
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extern kmutex_t ipf_rw;
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#endif
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#define isdigit(x) ((x) >= '0' && (x) <= '9')
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#define IPF_RCMD_PROXY
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int ippr_rcmd_init __P((void));
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int ippr_rcmd_new __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *));
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int ippr_rcmd_out __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *));
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u_short ipf_rcmd_atoi __P((char *));
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int ippr_rcmd_portmsg __P((fr_info_t *, ip_t *, ap_session_t *, nat_t *));
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static frentry_t rcmdfr;
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/*
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* RCMD application proxy initialization.
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*/
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int ippr_rcmd_init()
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{
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bzero((char *)&rcmdfr, sizeof(rcmdfr));
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rcmdfr.fr_ref = 1;
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rcmdfr.fr_flags = FR_INQUE|FR_PASS|FR_QUICK|FR_KEEPSTATE;
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return 0;
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}
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/*
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* Setup for a new RCMD proxy.
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*/
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int ippr_rcmd_new(fin, ip, aps, nat)
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fr_info_t *fin;
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ip_t *ip;
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ap_session_t *aps;
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nat_t *nat;
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{
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tcphdr_t *tcp = (tcphdr_t *)fin->fin_dp;
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aps->aps_psiz = sizeof(u_32_t);
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KMALLOCS(aps->aps_data, u_32_t *, sizeof(u_32_t));
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if (aps->aps_data == NULL)
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return -1;
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*(u_32_t *)aps->aps_data = 0;
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aps->aps_sport = tcp->th_sport;
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aps->aps_dport = tcp->th_dport;
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return 0;
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}
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/*
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* ipf_rcmd_atoi - implement a simple version of atoi
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*/
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u_short ipf_rcmd_atoi(ptr)
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char *ptr;
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{
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register char *s = ptr, c;
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register u_short i = 0;
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while ((c = *s++) && isdigit(c)) {
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i *= 10;
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i += c - '0';
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}
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return i;
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}
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int ippr_rcmd_portmsg(fin, ip, aps, nat)
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fr_info_t *fin;
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ip_t *ip;
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ap_session_t *aps;
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nat_t *nat;
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{
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char portbuf[8], *s;
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struct in_addr swip;
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u_short sp, dp;
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int off, dlen;
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tcphdr_t *tcp, tcph, *tcp2 = &tcph;
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fr_info_t fi;
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nat_t *ipn;
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mb_t *m;
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#if SOLARIS
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mb_t *m1;
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#endif
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tcp = (tcphdr_t *)fin->fin_dp;
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off = (ip->ip_hl << 2) + (tcp->th_off << 2);
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m = *(mb_t **)fin->fin_mp;
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#if SOLARIS
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m = fin->fin_qfm;
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dlen = msgdsize(m) - off;
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bzero(portbuf, sizeof(portbuf));
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copyout_mblk(m, off, MIN(sizeof(portbuf), dlen), portbuf);
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#else
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dlen = mbufchainlen(m) - off;
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bzero(portbuf, sizeof(portbuf));
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m_copydata(m, off, MIN(sizeof(portbuf), dlen), portbuf);
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#endif
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if ((*(u_32_t *)aps->aps_data != 0) &&
|
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(tcp->th_seq != *(u_32_t *)aps->aps_data))
|
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return 0;
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portbuf[sizeof(portbuf) - 1] = '\0';
|
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s = portbuf;
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sp = ipf_rcmd_atoi(s);
|
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if (!sp)
|
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return 0;
|
||||
|
||||
/*
|
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* Add skeleton NAT entry for connection which will come back the
|
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* other way.
|
||||
*/
|
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sp = htons(sp);
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dp = htons(fin->fin_data[1]);
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ipn = nat_outlookup(fin->fin_ifp, IPN_TCP, nat->nat_p, nat->nat_inip,
|
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ip->ip_dst, (dp << 16) | sp);
|
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if (ipn == NULL) {
|
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bcopy((char *)fin, (char *)&fi, sizeof(fi));
|
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bzero((char *)tcp2, sizeof(*tcp2));
|
||||
tcp2->th_win = htons(8192);
|
||||
tcp2->th_sport = sp;
|
||||
tcp2->th_dport = 0; /* XXX - don't specify remote port */
|
||||
fi.fin_data[0] = ntohs(sp);
|
||||
fi.fin_data[1] = 0;
|
||||
fi.fin_dp = (char *)tcp2;
|
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swip = ip->ip_src;
|
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ip->ip_src = nat->nat_inip;
|
||||
ipn = nat_new(nat->nat_ptr, ip, &fi, IPN_TCP|FI_W_DPORT,
|
||||
NAT_OUTBOUND);
|
||||
if (ipn != NULL) {
|
||||
ipn->nat_age = fr_defnatage;
|
||||
fi.fin_fr = &rcmdfr;
|
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(void) fr_addstate(ip, &fi, FI_W_DPORT);
|
||||
}
|
||||
ip->ip_src = swip;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int ippr_rcmd_out(fin, ip, aps, nat)
|
||||
fr_info_t *fin;
|
||||
ip_t *ip;
|
||||
ap_session_t *aps;
|
||||
nat_t *nat;
|
||||
{
|
||||
return ippr_rcmd_portmsg(fin, ip, aps, nat);
|
||||
}
|
||||
178
sys/netinet/mlfk_ipl.c
Normal file
178
sys/netinet/mlfk_ipl.c
Normal file
@ -0,0 +1,178 @@
|
||||
/*
|
||||
* Copyright 1999 Guido van Rooij. 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 COPYRIGHT HOLDER ``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 HOLDER 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/module.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/sysctl.h>
|
||||
#include <net/if.h>
|
||||
#include <netinet/in_systm.h>
|
||||
#include <netinet/in.h>
|
||||
|
||||
|
||||
#include <netinet/ipl.h>
|
||||
#include <netinet/ip_compat.h>
|
||||
#include <netinet/ip_fil.h>
|
||||
#include <netinet/ip_state.h>
|
||||
#include <netinet/ip_nat.h>
|
||||
#include <netinet/ip_auth.h>
|
||||
#include <netinet/ip_frag.h>
|
||||
|
||||
static dev_t ipf_devs[IPL_LOGMAX + 1];
|
||||
|
||||
SYSCTL_DECL(_net_inet);
|
||||
SYSCTL_NODE(_net_inet, OID_AUTO, ipf, CTLFLAG_RW, 0, "IPF");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_flags, CTLFLAG_RW, &fr_flags, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_pass, CTLFLAG_RW, &fr_pass, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_active, CTLFLAG_RD, &fr_active, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpidletimeout, CTLFLAG_RW,
|
||||
&fr_tcpidletimeout, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosewait, CTLFLAG_RW,
|
||||
&fr_tcpclosewait, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcplastack, CTLFLAG_RW,
|
||||
&fr_tcplastack, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcptimeout, CTLFLAG_RW,
|
||||
&fr_tcptimeout, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosed, CTLFLAG_RW,
|
||||
&fr_tcpclosed, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_udptimeout, CTLFLAG_RW,
|
||||
&fr_udptimeout, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_icmptimeout, CTLFLAG_RW,
|
||||
&fr_icmptimeout, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defnatage, CTLFLAG_RW,
|
||||
&fr_defnatage, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_ipfrttl, CTLFLAG_RW,
|
||||
&fr_ipfrttl, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_unreach, CTLFLAG_RW,
|
||||
&ipl_unreach, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_inited, CTLFLAG_RD,
|
||||
&ipl_inited, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authsize, CTLFLAG_RD,
|
||||
&fr_authsize, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authused, CTLFLAG_RD,
|
||||
&fr_authused, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defaultauthage, CTLFLAG_RW,
|
||||
&fr_defaultauthage, 0, "");
|
||||
|
||||
#define CDEV_MAJOR 79
|
||||
static struct cdevsw ipl_cdevsw = {
|
||||
/* open */ iplopen,
|
||||
/* close */ iplclose,
|
||||
/* read */ iplread,
|
||||
/* write */ nowrite,
|
||||
/* ioctl */ iplioctl,
|
||||
/* poll */ nopoll,
|
||||
/* mmap */ nommap,
|
||||
/* strategy */ nostrategy,
|
||||
/* name */ "ipl",
|
||||
/* maj */ CDEV_MAJOR,
|
||||
/* dump */ nodump,
|
||||
/* psize */ nopsize,
|
||||
/* flags */ 0,
|
||||
/* bmaj */ -1
|
||||
};
|
||||
|
||||
static int
|
||||
ipfilter_modevent(module_t mod, int type, void *unused)
|
||||
{
|
||||
char *c;
|
||||
int i, error = 0;
|
||||
|
||||
switch (type) {
|
||||
case MOD_LOAD :
|
||||
error = iplattach();
|
||||
|
||||
c = NULL;
|
||||
for(i=strlen(IPL_NAME); i>0; i--)
|
||||
if (IPL_NAME[i] == '/') {
|
||||
c = &IPL_NAME[i+1];
|
||||
break;
|
||||
}
|
||||
if (!c)
|
||||
c = IPL_NAME;
|
||||
ipf_devs[IPL_LOGIPF] =
|
||||
make_dev(&ipl_cdevsw, IPL_LOGIPF, 0, 0, 0600, c);
|
||||
|
||||
c = NULL;
|
||||
for(i=strlen(IPL_NAT); i>0; i--)
|
||||
if (IPL_NAT[i] == '/') {
|
||||
c = &IPL_NAT[i+1];
|
||||
break;
|
||||
}
|
||||
if (!c)
|
||||
c = IPL_NAT;
|
||||
ipf_devs[IPL_LOGNAT] =
|
||||
make_dev(&ipl_cdevsw, IPL_LOGNAT, 0, 0, 0600, c);
|
||||
|
||||
c = NULL;
|
||||
for(i=strlen(IPL_STATE); i>0; i--)
|
||||
if (IPL_STATE[i] == '/') {
|
||||
c = &IPL_STATE[i+1];
|
||||
break;
|
||||
}
|
||||
if (!c)
|
||||
c = IPL_STATE;
|
||||
ipf_devs[IPL_LOGSTATE] =
|
||||
make_dev(&ipl_cdevsw, IPL_LOGSTATE, 0, 0, 0600, c);
|
||||
|
||||
c = NULL;
|
||||
for(i=strlen(IPL_AUTH); i>0; i--)
|
||||
if (IPL_AUTH[i] == '/') {
|
||||
c = &IPL_AUTH[i+1];
|
||||
break;
|
||||
}
|
||||
if (!c)
|
||||
c = IPL_AUTH;
|
||||
ipf_devs[IPL_LOGAUTH] =
|
||||
make_dev(&ipl_cdevsw, IPL_LOGAUTH, 0, 0, 0600, c);
|
||||
|
||||
break;
|
||||
case MOD_UNLOAD :
|
||||
destroy_dev(ipf_devs[IPL_LOGIPF]);
|
||||
destroy_dev(ipf_devs[IPL_LOGNAT]);
|
||||
destroy_dev(ipf_devs[IPL_LOGSTATE]);
|
||||
destroy_dev(ipf_devs[IPL_LOGAUTH]);
|
||||
cdevsw_remove(&ipl_cdevsw);
|
||||
error = ipldetach();
|
||||
break;
|
||||
default:
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
static moduledata_t ipfiltermod = {
|
||||
IPL_VERSION,
|
||||
ipfilter_modevent,
|
||||
0
|
||||
};
|
||||
DECLARE_MODULE(ipfilter, ipfiltermod, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY);
|
||||
Loading…
Reference in New Issue
Block a user