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-rw-r--r--qemu/slirp/src/udp.c363
1 files changed, 0 insertions, 363 deletions
diff --git a/qemu/slirp/src/udp.c b/qemu/slirp/src/udp.c
deleted file mode 100644
index 27bb829..0000000
--- a/qemu/slirp/src/udp.c
+++ /dev/null
@@ -1,363 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. 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.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
- *
- * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
- * udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp
- */
-
-/*
- * Changes and additions relating to SLiRP
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-#include "ip_icmp.h"
-
-static uint8_t udp_tos(struct socket *so);
-
-void
-udp_init(Slirp *slirp)
-{
- slirp->udb.so_next = slirp->udb.so_prev = &slirp->udb;
- slirp->udp_last_so = &slirp->udb;
-}
-
-void udp_cleanup(Slirp *slirp)
-{
- while (slirp->udb.so_next != &slirp->udb) {
- udp_detach(slirp->udb.so_next);
- }
-}
-
-/* m->m_data points at ip packet header
- * m->m_len length ip packet
- * ip->ip_len length data (IPDU)
- */
-void
-udp_input(register struct mbuf *m, int iphlen)
-{
- Slirp *slirp = m->slirp;
- register struct ip *ip;
- register struct udphdr *uh;
- int len;
- struct ip save_ip;
- struct socket *so;
- struct sockaddr_storage lhost;
- struct sockaddr_in *lhost4;
-
- DEBUG_CALL("udp_input");
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("iphlen = %d", iphlen);
-
- /*
- * Strip IP options, if any; should skip this,
- * make available to user, and use on returned packets,
- * but we don't yet have a way to check the checksum
- * with options still present.
- */
- if(iphlen > sizeof(struct ip)) {
- ip_stripoptions(m, (struct mbuf *)0);
- iphlen = sizeof(struct ip);
- }
-
- /*
- * Get IP and UDP header together in first mbuf.
- */
- ip = mtod(m, struct ip *);
- uh = (struct udphdr *)((char *)ip + iphlen);
-
- /*
- * Make mbuf data length reflect UDP length.
- * If not enough data to reflect UDP length, drop.
- */
- len = ntohs((uint16_t)uh->uh_ulen);
-
- if (ip->ip_len != len) {
- if (len > ip->ip_len) {
- goto bad;
- }
- m_adj(m, len - ip->ip_len);
- ip->ip_len = len;
- }
-
- /*
- * Save a copy of the IP header in case we want restore it
- * for sending an ICMP error message in response.
- */
- save_ip = *ip;
- save_ip.ip_len+= iphlen; /* tcp_input subtracts this */
-
- /*
- * Checksum extended UDP header and data.
- */
- if (uh->uh_sum) {
- memset(&((struct ipovly *)ip)->ih_mbuf, 0, sizeof(struct mbuf_ptr));
- ((struct ipovly *)ip)->ih_x1 = 0;
- ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
- if(cksum(m, len + sizeof(struct ip))) {
- goto bad;
- }
- }
-
- lhost.ss_family = AF_INET;
- lhost4 = (struct sockaddr_in *) &lhost;
- lhost4->sin_addr = ip->ip_src;
- lhost4->sin_port = uh->uh_sport;
-
- /*
- * handle DHCP/BOOTP
- */
- if (ntohs(uh->uh_dport) == BOOTP_SERVER &&
- (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr ||
- ip->ip_dst.s_addr == 0xffffffff)) {
- bootp_input(m);
- goto bad;
- }
-
- /*
- * handle TFTP
- */
- if (ntohs(uh->uh_dport) == TFTP_SERVER &&
- ip->ip_dst.s_addr == slirp->vhost_addr.s_addr) {
- m->m_data += iphlen;
- m->m_len -= iphlen;
- tftp_input(&lhost, m);
- m->m_data -= iphlen;
- m->m_len += iphlen;
- goto bad;
- }
-
- if (slirp->restricted) {
- goto bad;
- }
-
- /*
- * Locate pcb for datagram.
- */
- so = solookup(&slirp->udp_last_so, &slirp->udb, &lhost, NULL);
-
- if (so == NULL) {
- /*
- * If there's no socket for this packet,
- * create one
- */
- so = socreate(slirp);
- if (udp_attach(so, AF_INET) == -1) {
- DEBUG_MISC(" udp_attach errno = %d-%s", errno, strerror(errno));
- sofree(so);
- goto bad;
- }
-
- /*
- * Setup fields
- */
- so->so_lfamily = AF_INET;
- so->so_laddr = ip->ip_src;
- so->so_lport = uh->uh_sport;
-
- if ((so->so_iptos = udp_tos(so)) == 0)
- so->so_iptos = ip->ip_tos;
-
- /*
- * XXXXX Here, check if it's in udpexec_list,
- * and if it is, do the fork_exec() etc.
- */
- }
-
- so->so_ffamily = AF_INET;
- so->so_faddr = ip->ip_dst; /* XXX */
- so->so_fport = uh->uh_dport; /* XXX */
-
- iphlen += sizeof(struct udphdr);
- m->m_len -= iphlen;
- m->m_data += iphlen;
-
- /*
- * Now we sendto() the packet.
- */
- if(sosendto(so,m) == -1) {
- m->m_len += iphlen;
- m->m_data -= iphlen;
- *ip=save_ip;
- DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno));
- icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0,
- strerror(errno));
- goto bad;
- }
-
- m_free(so->so_m); /* used for ICMP if error on sorecvfrom */
-
- /* restore the orig mbuf packet */
- m->m_len += iphlen;
- m->m_data -= iphlen;
- *ip=save_ip;
- so->so_m=m; /* ICMP backup */
-
- return;
-bad:
- m_free(m);
-}
-
-int udp_output(struct socket *so, struct mbuf *m,
- struct sockaddr_in *saddr, struct sockaddr_in *daddr,
- int iptos)
-{
- register struct udpiphdr *ui;
- int error = 0;
-
- DEBUG_CALL("udp_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("saddr = %s", inet_ntoa(saddr->sin_addr));
- DEBUG_ARG("daddr = %s", inet_ntoa(daddr->sin_addr));
-
- /*
- * Adjust for header
- */
- m->m_data -= sizeof(struct udpiphdr);
- m->m_len += sizeof(struct udpiphdr);
-
- /*
- * Fill in mbuf with extended UDP header
- * and addresses and length put into network format.
- */
- ui = mtod(m, struct udpiphdr *);
- memset(&ui->ui_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr));
- ui->ui_x1 = 0;
- ui->ui_pr = IPPROTO_UDP;
- ui->ui_len = htons(m->m_len - sizeof(struct ip));
- /* XXXXX Check for from-one-location sockets, or from-any-location sockets */
- ui->ui_src = saddr->sin_addr;
- ui->ui_dst = daddr->sin_addr;
- ui->ui_sport = saddr->sin_port;
- ui->ui_dport = daddr->sin_port;
- ui->ui_ulen = ui->ui_len;
-
- /*
- * Stuff checksum and output datagram.
- */
- ui->ui_sum = 0;
- if ((ui->ui_sum = cksum(m, m->m_len)) == 0)
- ui->ui_sum = 0xffff;
- ((struct ip *)ui)->ip_len = m->m_len;
-
- ((struct ip *)ui)->ip_ttl = IPDEFTTL;
- ((struct ip *)ui)->ip_tos = iptos;
-
- error = ip_output(so, m);
-
- return (error);
-}
-
-int
-udp_attach(struct socket *so, unsigned short af)
-{
- so->s = slirp_socket(af, SOCK_DGRAM, 0);
- if (so->s != -1) {
- so->so_expire = curtime + SO_EXPIRE;
- insque(so, &so->slirp->udb);
- }
- return(so->s);
-}
-
-void
-udp_detach(struct socket *so)
-{
- so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
- closesocket(so->s);
- sofree(so);
-}
-
-static const struct tos_t udptos[] = {
- {0, 53, IPTOS_LOWDELAY, 0}, /* DNS */
- {0, 0, 0, 0}
-};
-
-static uint8_t
-udp_tos(struct socket *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;
-}
-
-struct socket *
-udp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr,
- unsigned lport, int flags)
-{
- /* TODO: IPv6 */
- struct sockaddr_in addr;
- struct socket *so;
- socklen_t addrlen = sizeof(struct sockaddr_in);
-
- so = socreate(slirp);
- so->s = slirp_socket(AF_INET,SOCK_DGRAM,0);
- if (so->s < 0) {
- sofree(so);
- return NULL;
- }
- so->so_expire = curtime + SO_EXPIRE;
- insque(so, &slirp->udb);
-
- addr.sin_family = AF_INET;
- addr.sin_addr.s_addr = haddr;
- addr.sin_port = hport;
-
- if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) {
- udp_detach(so);
- return NULL;
- }
- slirp_socket_set_fast_reuse(so->s);
-
- getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
- so->fhost.sin = addr;
- sotranslate_accept(so);
- so->so_lfamily = AF_INET;
- so->so_lport = lport;
- so->so_laddr.s_addr = laddr;
- if (flags != SS_FACCEPTONCE)
- so->so_expire = 0;
-
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_ISFCONNECTED | flags;
-
- return so;
-}
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