Initial submission of the PCem-Experimental source code.
This commit is contained in:
OBattler
676
src/slirp/udp.c
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676
src/slirp/udp.c
Normal file
@@ -0,0 +1,676 @@
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/*
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* Copyright (c) 1982, 1986, 1988, 1990, 1993
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* The Regents of the University of California. 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
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* udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp
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*/
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/*
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* Changes and additions relating to SLiRP
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* Copyright (c) 1995 Danny Gasparovski.
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*
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* Please read the file COPYRIGHT for the
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* terms and conditions of the copyright.
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*/
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#include <stdlib.h>
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#include "slirp.h"
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#include "ip_icmp.h"
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struct udpstat udpstat;
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struct SLIRPsocket udb;
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/*
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* UDP protocol implementation.
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* Per RFC 768, August, 1980.
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*/
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#ifndef COMPAT_42
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int udpcksum = 1;
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#else
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int udpcksum = 0; /* XXX */
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#endif
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struct SLIRPsocket *udp_last_so = &udb;
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void
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udp_init()
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{
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udb.so_next = udb.so_prev = &udb;
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}
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/* m->m_data points at ip packet header
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* m->m_len length ip packet
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* ip->ip_len length data (IPDU)
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*/
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void
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udp_input(m, iphlen)
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struct SLIRPmbuf *m;
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int iphlen;
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{
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struct ip *ip;
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struct udphdr *uh;
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/* struct SLIRPmbuf *opts = 0;*/
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int len;
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struct ip save_ip;
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struct SLIRPsocket *so;
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DEBUG_CALL("udp_input");
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DEBUG_ARG("m = %lx", (long)m);
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DEBUG_ARG("iphlen = %d", iphlen);
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udpstat.udps_ipackets++;
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/*
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* Strip IP options, if any; should skip this,
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* make available to user, and use on returned packets,
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* but we don't yet have a way to check the checksum
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* with options still present.
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*/
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if(iphlen > sizeof(struct ip)) {
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ip_stripoptions(m, (struct SLIRPmbuf *)0);
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iphlen = sizeof(struct ip);
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}
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/*
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* Get IP and UDP header together in first SLIRPmbuf.
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*/
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ip = mtod(m, struct ip *);
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uh = (struct udphdr *)((SLIRPcaddr_t)ip + iphlen);
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/*
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* Make SLIRPmbuf data length reflect UDP length.
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* If not enough data to reflect UDP length, drop.
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*/
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len = ntohs((u_int16_t)uh->uh_ulen);
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if (ip->ip_len != len) {
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if (len > ip->ip_len) {
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udpstat.udps_badlen++;
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goto bad;
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}
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m_adj(m, len - ip->ip_len);
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ip->ip_len = len;
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}
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/*
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* Save a copy of the IP header in case we want restore it
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* for sending an ICMP error message in response.
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*/
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save_ip = *ip;
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save_ip.ip_len+= iphlen; /* tcp_input subtracts this */
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/*
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* Checksum extended UDP header and data.
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*/
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if (udpcksum && uh->uh_sum) {
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((struct ipovly *)ip)->ih_next = 0;
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((struct ipovly *)ip)->ih_prev = 0;
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((struct ipovly *)ip)->ih_x1 = 0;
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((struct ipovly *)ip)->ih_len = uh->uh_ulen;
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/* keep uh_sum for ICMP reply
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* uh->uh_sum = cksum(m, len + sizeof (struct ip));
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* if (uh->uh_sum) {
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*/
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if(cksum(m, len + sizeof(struct ip))) {
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udpstat.udps_badsum++;
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goto bad;
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}
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}
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/*
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* handle DHCP/BOOTP
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*/
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if (ntohs(uh->uh_dport) == BOOTP_SERVER) {
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bootp_input(m);
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goto bad;
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}
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/*
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* handle TFTP
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*/
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if (ntohs(uh->uh_dport) == TFTP_SERVER) {
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tftp_input(m);
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goto bad;
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}
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/*
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* Locate pcb for datagram.
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*/
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so = udp_last_so;
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if (so->so_lport != uh->uh_sport ||
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so->so_laddr.s_addr != ip->ip_src.s_addr) {
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struct SLIRPsocket *tmp;
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for (tmp = udb.so_next; tmp != &udb; tmp = tmp->so_next) {
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if (tmp->so_lport == uh->uh_sport &&
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tmp->so_laddr.s_addr == ip->ip_src.s_addr) {
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tmp->so_faddr.s_addr = ip->ip_dst.s_addr;
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tmp->so_fport = uh->uh_dport;
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so = tmp;
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break;
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}
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}
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if (tmp == &udb) {
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so = NULL;
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} else {
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udpstat.udpps_pcbcachemiss++;
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udp_last_so = so;
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}
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}
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if (so == NULL) {
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/*
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* If there's no socket for this packet,
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* create one
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*/
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if ((so = socreate()) == NULL) goto bad;
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if(udp_attach(so) == -1) {
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DEBUG_MISC((dfd," udp_attach errno = %d-%s\n",
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errno,strerror(errno)));
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sofree(so);
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goto bad;
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}
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/*
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* Setup fields
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*/
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/* udp_last_so = so; */
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so->so_laddr = ip->ip_src;
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so->so_lport = uh->uh_sport;
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if ((so->so_iptos = udp_tos(so)) == 0)
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so->so_iptos = ip->ip_tos;
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/*
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* XXXXX Here, check if it's in udpexec_list,
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* and if it is, do the fork_exec() etc.
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*/
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}
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so->so_faddr = ip->ip_dst; /* XXX */
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so->so_fport = uh->uh_dport; /* XXX */
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iphlen += sizeof(struct udphdr);
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m->m_len -= iphlen;
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m->m_data += iphlen;
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/*
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* Now we sendto() the packet.
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*/
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if (so->so_emu)
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udp_emu(so, m);
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if(sosendto(so,m) == -1) {
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m->m_len += iphlen;
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m->m_data -= iphlen;
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*ip=save_ip;
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DEBUG_MISC((dfd,"udp tx errno = %d-%s\n",errno,strerror(errno)));
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icmp_error(m, ICMP_UNREACH,ICMP_UNREACH_NET, 0,strerror(errno));
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}
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m_free(so->so_m); /* used for ICMP if error on sorecvfrom */
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/* restore the orig SLIRPmbuf packet */
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m->m_len += iphlen;
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m->m_data -= iphlen;
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*ip=save_ip;
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so->so_m=m; /* ICMP backup */
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return;
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bad:
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m_freem(m);
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/* if (opts) m_freem(opts); */
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return;
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}
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int udp_output2(struct SLIRPsocket *so, struct SLIRPmbuf *m,
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struct sockaddr_in *saddr, struct sockaddr_in *daddr,
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int iptos)
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{
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struct udpiphdr *ui;
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int error = 0;
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DEBUG_CALL("udp_output");
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DEBUG_ARG("so = %lx", (long)so);
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DEBUG_ARG("m = %lx", (long)m);
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DEBUG_ARG("saddr = %lx", (long)saddr->sin_addr.s_addr);
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DEBUG_ARG("daddr = %lx", (long)daddr->sin_addr.s_addr);
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/*
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* Adjust for header
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*/
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m->m_data -= sizeof(struct udpiphdr);
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m->m_len += sizeof(struct udpiphdr);
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/*
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* Fill in SLIRPmbuf with extended UDP header
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* and addresses and length put into network format.
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*/
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ui = mtod(m, struct udpiphdr *);
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ui->ui_next = ui->ui_prev = 0;
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ui->ui_x1 = 0;
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ui->ui_pr = IPPROTO_UDP;
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ui->ui_len = htons(m->m_len - sizeof(struct ip)); /* + sizeof (struct udphdr)); */
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/* XXXXX Check for from-one-location sockets, or from-any-location sockets */
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ui->ui_src = saddr->sin_addr;
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ui->ui_dst = daddr->sin_addr;
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ui->ui_sport = saddr->sin_port;
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ui->ui_dport = daddr->sin_port;
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ui->ui_ulen = ui->ui_len;
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/*
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* Stuff checksum and output datagram.
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*/
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ui->ui_sum = 0;
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if (udpcksum) {
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if ((ui->ui_sum = cksum(m, /* sizeof (struct udpiphdr) + */ m->m_len)) == 0)
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ui->ui_sum = 0xffff;
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}
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((struct ip *)ui)->ip_len = m->m_len;
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((struct ip *)ui)->ip_ttl = ip_defttl;
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((struct ip *)ui)->ip_tos = iptos;
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udpstat.udps_opackets++;
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error = ip_output(so, m);
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return (error);
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}
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int udp_output(struct SLIRPsocket *so, struct SLIRPmbuf *m,
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struct sockaddr_in *addr)
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{
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struct sockaddr_in saddr, daddr;
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||||
|
||||
saddr = *addr;
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if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) {
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saddr.sin_addr.s_addr = so->so_faddr.s_addr;
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if ((so->so_faddr.s_addr & htonl(0x000000ff)) == htonl(0xff))
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saddr.sin_addr.s_addr = alias_addr.s_addr;
|
||||
}
|
||||
daddr.sin_addr = so->so_laddr;
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||||
daddr.sin_port = so->so_lport;
|
||||
|
||||
return udp_output2(so, m, &saddr, &daddr, so->so_iptos);
|
||||
}
|
||||
|
||||
int
|
||||
udp_attach(so)
|
||||
struct SLIRPsocket *so;
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
|
||||
if((so->s = socket(AF_INET,SOCK_DGRAM,0)) != -1) {
|
||||
/*
|
||||
* Here, we bind() the socket. Although not really needed
|
||||
* (sendto() on an unbound socket will bind it), it's done
|
||||
* here so that emulation of ytalk etc. don't have to do it
|
||||
*/
|
||||
memset(&addr, 0, sizeof(struct sockaddr_in));
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_port = 0;
|
||||
addr.sin_addr.s_addr = INADDR_ANY;
|
||||
if(bind(so->s, (struct sockaddr *)&addr, sizeof(addr))<0) {
|
||||
int lasterrno=errno;
|
||||
closesocket(so->s);
|
||||
so->s=-1;
|
||||
#ifdef _WIN32
|
||||
WSASetLastError(lasterrno);
|
||||
#else
|
||||
errno=lasterrno;
|
||||
#endif
|
||||
} else {
|
||||
/* success, insert in queue */
|
||||
so->so_expire = curtime + SO_EXPIRE;
|
||||
insque(so,&udb);
|
||||
}
|
||||
}
|
||||
return(so->s);
|
||||
}
|
||||
|
||||
void
|
||||
udp_detach(so)
|
||||
struct SLIRPsocket *so;
|
||||
{
|
||||
closesocket(so->s);
|
||||
/* if (so->so_m) m_free(so->so_m); done by sofree */
|
||||
|
||||
sofree(so);
|
||||
}
|
||||
|
||||
struct tos_t udptos[] = {
|
||||
{0, 53, IPTOS_LOWDELAY, 0}, /* DNS */
|
||||
{517, 517, IPTOS_LOWDELAY, EMU_TALK}, /* talk */
|
||||
{518, 518, IPTOS_LOWDELAY, EMU_NTALK}, /* ntalk */
|
||||
{0, 7648, IPTOS_LOWDELAY, EMU_CUSEEME}, /* Cu-Seeme */
|
||||
{0, 0, 0, 0}
|
||||
};
|
||||
|
||||
u_int8_t
|
||||
udp_tos(so)
|
||||
struct SLIRPsocket *so;
|
||||
{
|
||||
int i = 0;
|
||||
|
||||
while(udptos[i].tos) {
|
||||
if ((udptos[i].fport && ntohs(so->so_fport) == udptos[i].fport) ||
|
||||
(udptos[i].lport && ntohs(so->so_lport) == udptos[i].lport)) {
|
||||
so->so_emu = udptos[i].emu;
|
||||
return udptos[i].tos;
|
||||
}
|
||||
i++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef EMULATE_TALK
|
||||
#include "talkd.h"
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Here, talk/ytalk/ntalk requests must be emulated
|
||||
*/
|
||||
void
|
||||
udp_emu(so, m)
|
||||
struct SLIRPsocket *so;
|
||||
struct SLIRPmbuf *m;
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
socklen_t addrlen = sizeof(addr);
|
||||
#ifdef EMULATE_TALK
|
||||
CTL_MSG_OLD *omsg;
|
||||
CTL_MSG *nmsg;
|
||||
char buff[sizeof(CTL_MSG)];
|
||||
u_char type;
|
||||
|
||||
struct talk_request {
|
||||
struct talk_request *next;
|
||||
struct SLIRPsocket *udp_so;
|
||||
struct SLIRPsocket *tcp_so;
|
||||
} *req;
|
||||
|
||||
static struct talk_request *req_tbl = 0;
|
||||
|
||||
#endif
|
||||
|
||||
struct cu_header {
|
||||
uint16_t d_family; // destination family
|
||||
uint16_t d_port; // destination port
|
||||
uint32_t d_addr; // destination address
|
||||
uint16_t s_family; // source family
|
||||
uint16_t s_port; // source port
|
||||
uint32_t so_addr; // source address
|
||||
uint32_t seqn; // sequence number
|
||||
uint16_t message; // message
|
||||
uint16_t data_type; // data type
|
||||
uint16_t pkt_len; // packet length
|
||||
} *cu_head;
|
||||
|
||||
switch(so->so_emu) {
|
||||
|
||||
#ifdef EMULATE_TALK
|
||||
case EMU_TALK:
|
||||
case EMU_NTALK:
|
||||
/*
|
||||
* Talk emulation. We always change the ctl_addr to get
|
||||
* some answers from the daemon. When an ANNOUNCE comes,
|
||||
* we send LEAVE_INVITE to the local daemons. Also when a
|
||||
* DELETE comes, we send copies to the local daemons.
|
||||
*/
|
||||
if (getsockname(so->s, (struct sockaddr *)&addr, &addrlen) < 0)
|
||||
return;
|
||||
|
||||
#define IS_OLD (so->so_emu == EMU_TALK)
|
||||
|
||||
#define COPY_MSG(dest, src) { dest->type = src->type; \
|
||||
dest->id_num = src->id_num; \
|
||||
dest->pid = src->pid; \
|
||||
dest->addr = src->addr; \
|
||||
dest->ctl_addr = src->ctl_addr; \
|
||||
memcpy(&dest->l_name, &src->l_name, NAME_SIZE_OLD); \
|
||||
memcpy(&dest->r_name, &src->r_name, NAME_SIZE_OLD); \
|
||||
memcpy(&dest->r_tty, &src->r_tty, TTY_SIZE); }
|
||||
|
||||
#define OTOSIN(ptr, field) ((struct sockaddr_in *)&ptr->field)
|
||||
/* old_sockaddr to sockaddr_in */
|
||||
|
||||
|
||||
if (IS_OLD) { /* old talk */
|
||||
omsg = mtod(m, CTL_MSG_OLD*);
|
||||
nmsg = (CTL_MSG *) buff;
|
||||
type = omsg->type;
|
||||
OTOSIN(omsg, ctl_addr)->sin_port = addr.sin_port;
|
||||
OTOSIN(omsg, ctl_addr)->sin_addr = our_addr;
|
||||
strncpy(omsg->l_name, getlogin(), NAME_SIZE_OLD);
|
||||
} else { /* new talk */
|
||||
omsg = (CTL_MSG_OLD *) buff;
|
||||
nmsg = mtod(m, CTL_MSG *);
|
||||
type = nmsg->type;
|
||||
OTOSIN(nmsg, ctl_addr)->sin_port = addr.sin_port;
|
||||
OTOSIN(nmsg, ctl_addr)->sin_addr = our_addr;
|
||||
strncpy(nmsg->l_name, getlogin(), NAME_SIZE_OLD);
|
||||
}
|
||||
|
||||
if (type == LOOK_UP)
|
||||
return; /* for LOOK_UP this is enough */
|
||||
|
||||
if (IS_OLD) { /* make a copy of the message */
|
||||
COPY_MSG(nmsg, omsg);
|
||||
nmsg->vers = 1;
|
||||
nmsg->answer = 0;
|
||||
} else
|
||||
COPY_MSG(omsg, nmsg);
|
||||
|
||||
/*
|
||||
* If if is an ANNOUNCE message, we go through the
|
||||
* request table to see if a tcp port has already
|
||||
* been redirected for this socket. If not, we solisten()
|
||||
* a new socket and add this entry to the table.
|
||||
* The port number of the tcp socket and our IP
|
||||
* are put to the addr field of the message structures.
|
||||
* Then a LEAVE_INVITE is sent to both local daemon
|
||||
* ports, 517 and 518. This is why we have two copies
|
||||
* of the message, one in old talk and one in new talk
|
||||
* format.
|
||||
*/
|
||||
|
||||
if (type == ANNOUNCE) {
|
||||
int s;
|
||||
u_short temp_port;
|
||||
|
||||
for(req = req_tbl; req; req = req->next)
|
||||
if (so == req->udp_so)
|
||||
break; /* found it */
|
||||
|
||||
if (!req) { /* no entry for so, create new */
|
||||
req = (struct talk_request *)
|
||||
malloc(sizeof(struct talk_request));
|
||||
req->udp_so = so;
|
||||
req->tcp_so = solisten(0,
|
||||
OTOSIN(omsg, addr)->sin_addr.s_addr,
|
||||
OTOSIN(omsg, addr)->sin_port,
|
||||
SS_FACCEPTONCE);
|
||||
req->next = req_tbl;
|
||||
req_tbl = req;
|
||||
}
|
||||
|
||||
/* replace port number in addr field */
|
||||
addrlen = sizeof(addr);
|
||||
getsockname(req->tcp_so->s,
|
||||
(struct sockaddr *) &addr,
|
||||
&addrlen);
|
||||
OTOSIN(omsg, addr)->sin_port = addr.sin_port;
|
||||
OTOSIN(omsg, addr)->sin_addr = our_addr;
|
||||
OTOSIN(nmsg, addr)->sin_port = addr.sin_port;
|
||||
OTOSIN(nmsg, addr)->sin_addr = our_addr;
|
||||
|
||||
/* send LEAVE_INVITEs */
|
||||
temp_port = OTOSIN(omsg, ctl_addr)->sin_port;
|
||||
OTOSIN(omsg, ctl_addr)->sin_port = 0;
|
||||
OTOSIN(nmsg, ctl_addr)->sin_port = 0;
|
||||
omsg->type = nmsg->type = LEAVE_INVITE;
|
||||
|
||||
s = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
|
||||
addr.sin_addr = our_addr;
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_port = htons(517);
|
||||
sendto(s, (char *)omsg, sizeof(*omsg), 0,
|
||||
(struct sockaddr *)&addr, sizeof(addr));
|
||||
addr.sin_port = htons(518);
|
||||
sendto(s, (char *)nmsg, sizeof(*nmsg), 0,
|
||||
(struct sockaddr *) &addr, sizeof(addr));
|
||||
closesocket(s) ;
|
||||
|
||||
omsg->type = nmsg->type = ANNOUNCE;
|
||||
OTOSIN(omsg, ctl_addr)->sin_port = temp_port;
|
||||
OTOSIN(nmsg, ctl_addr)->sin_port = temp_port;
|
||||
}
|
||||
|
||||
/*
|
||||
* If it is a DELETE message, we send a copy to the
|
||||
* local daemons. Then we delete the entry corresponding
|
||||
* to our socket from the request table.
|
||||
*/
|
||||
|
||||
if (type == DELETE) {
|
||||
struct talk_request *temp_req, *req_next;
|
||||
int s;
|
||||
u_short temp_port;
|
||||
|
||||
temp_port = OTOSIN(omsg, ctl_addr)->sin_port;
|
||||
OTOSIN(omsg, ctl_addr)->sin_port = 0;
|
||||
OTOSIN(nmsg, ctl_addr)->sin_port = 0;
|
||||
|
||||
s = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
|
||||
addr.sin_addr = our_addr;
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_port = htons(517);
|
||||
sendto(s, (char *)omsg, sizeof(*omsg), 0,
|
||||
(struct sockaddr *)&addr, sizeof(addr));
|
||||
addr.sin_port = htons(518);
|
||||
sendto(s, (char *)nmsg, sizeof(*nmsg), 0,
|
||||
(struct sockaddr *)&addr, sizeof(addr));
|
||||
closesocket(s);
|
||||
|
||||
OTOSIN(omsg, ctl_addr)->sin_port = temp_port;
|
||||
OTOSIN(nmsg, ctl_addr)->sin_port = temp_port;
|
||||
|
||||
/* delete table entry */
|
||||
if (so == req_tbl->udp_so) {
|
||||
temp_req = req_tbl;
|
||||
req_tbl = req_tbl->next;
|
||||
free(temp_req);
|
||||
} else {
|
||||
temp_req = req_tbl;
|
||||
for(req = req_tbl->next; req; req = req_next) {
|
||||
req_next = req->next;
|
||||
if (so == req->udp_so) {
|
||||
temp_req->next = req_next;
|
||||
free(req);
|
||||
break;
|
||||
} else {
|
||||
temp_req = req;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return;
|
||||
#endif
|
||||
|
||||
case EMU_CUSEEME:
|
||||
|
||||
/*
|
||||
* Cu-SeeMe emulation.
|
||||
* Hopefully the packet is more that 16 bytes long. We don't
|
||||
* do any other tests, just replace the address and port
|
||||
* fields.
|
||||
*/
|
||||
if (m->m_len >= sizeof (*cu_head)) {
|
||||
if (getsockname(so->s, (struct sockaddr *)&addr, &addrlen) < 0)
|
||||
return;
|
||||
cu_head = mtod(m, struct cu_header *);
|
||||
cu_head->s_port = addr.sin_port;
|
||||
cu_head->so_addr = our_addr.s_addr;
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
struct SLIRPsocket *
|
||||
udp_listen(port, laddr, lport, flags)
|
||||
u_int port;
|
||||
u_int32_t laddr;
|
||||
u_int lport;
|
||||
int flags;
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
struct SLIRPsocket *so;
|
||||
socklen_t addrlen = sizeof(struct sockaddr_in);
|
||||
int opt = 1;
|
||||
|
||||
if ((so = socreate()) == NULL) {
|
||||
free(so);
|
||||
return NULL;
|
||||
}
|
||||
so->s = socket(AF_INET,SOCK_DGRAM,0);
|
||||
so->so_expire = curtime + SO_EXPIRE;
|
||||
insque(so,&udb);
|
||||
|
||||
memset(&addr, 0, sizeof(struct sockaddr_in));
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_addr.s_addr = INADDR_ANY;
|
||||
addr.sin_port = port;
|
||||
|
||||
if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) {
|
||||
udp_detach(so);
|
||||
return NULL;
|
||||
}
|
||||
setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
|
||||
/* setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); */
|
||||
|
||||
getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
|
||||
so->so_fport = addr.sin_port;
|
||||
if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr)
|
||||
so->so_faddr = alias_addr;
|
||||
else
|
||||
so->so_faddr = addr.sin_addr;
|
||||
|
||||
so->so_lport = lport;
|
||||
so->so_laddr.s_addr = laddr;
|
||||
if (flags != SS_FACCEPTONCE)
|
||||
so->so_expire = 0;
|
||||
|
||||
so->so_state = SS_ISFCONNECTED;
|
||||
|
||||
return so;
|
||||
}
|
||||
Reference in New Issue
Block a user