aboutsummaryrefslogtreecommitdiff
path: root/slirp/socket.c
diff options
context:
space:
mode:
authorMarc-André Lureau <marcandre.lureau@redhat.com>2019-02-12 17:25:21 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2019-03-07 12:46:31 +0100
commitc2d63650d962612cfa1b21302782d4cd12142c74 (patch)
tree13f97c3ecbf6a6588f579e9f7c2ab9cb5f3ce5ec /slirp/socket.c
parent5a4af0d4ee6084fdfde0125c45181fa0e6f48a17 (diff)
downloadqemu-arm-c2d63650d962612cfa1b21302782d4cd12142c74.tar.gz
slirp: move sources to src/ subdirectory
Prepare for making slirp/ a standalone project. Remove some useless includes while at it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-5-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Diffstat (limited to 'slirp/socket.c')
-rw-r--r--slirp/socket.c944
1 files changed, 0 insertions, 944 deletions
diff --git a/slirp/socket.c b/slirp/socket.c
deleted file mode 100644
index f2428a3ae8..0000000000
--- a/slirp/socket.c
+++ /dev/null
@@ -1,944 +0,0 @@
-/*
- * 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"
-#ifdef __sun__
-#include <sys/filio.h>
-#endif
-
-static void sofcantrcvmore(struct socket *so);
-static void sofcantsendmore(struct socket *so);
-
-struct socket *solookup(struct socket **last, struct socket *head,
- struct sockaddr_storage *lhost, struct sockaddr_storage *fhost)
-{
- struct socket *so = *last;
-
- /* Optimisation */
- if (so != head && sockaddr_equal(&(so->lhost.ss), lhost)
- && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) {
- return so;
- }
-
- for (so = head->so_next; so != head; so = so->so_next) {
- if (sockaddr_equal(&(so->lhost.ss), lhost)
- && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) {
- *last = so;
- return so;
- }
- }
-
- return (struct socket *)NULL;
-}
-
-/*
- * Create a new socket, initialise the fields
- * It is the responsibility of the caller to
- * insque() it into the correct linked-list
- */
-struct socket *
-socreate(Slirp *slirp)
-{
- struct socket *so = g_new(struct socket, 1);
-
- memset(so, 0, sizeof(struct socket));
- so->so_state = SS_NOFDREF;
- so->s = -1;
- so->slirp = slirp;
- so->pollfds_idx = -1;
-
- return so;
-}
-
-/*
- * Remove references to so from the given message queue.
- */
-static void
-soqfree(struct socket *so, struct quehead *qh)
-{
- struct mbuf *ifq;
-
- for (ifq = (struct mbuf *) qh->qh_link;
- (struct quehead *) ifq != qh;
- ifq = ifq->ifq_next) {
- if (ifq->ifq_so == so) {
- struct mbuf *ifm;
- ifq->ifq_so = NULL;
- for (ifm = ifq->ifs_next; ifm != ifq; ifm = ifm->ifs_next) {
- ifm->ifq_so = NULL;
- }
- }
- }
-}
-
-/*
- * remque and free a socket, clobber cache
- */
-void
-sofree(struct socket *so)
-{
- Slirp *slirp = so->slirp;
-
- soqfree(so, &slirp->if_fastq);
- soqfree(so, &slirp->if_batchq);
-
- if (so == slirp->tcp_last_so) {
- slirp->tcp_last_so = &slirp->tcb;
- } else if (so == slirp->udp_last_so) {
- slirp->udp_last_so = &slirp->udb;
- } else if (so == slirp->icmp_last_so) {
- slirp->icmp_last_so = &slirp->icmp;
- }
- m_free(so->so_m);
-
- if(so->so_next && so->so_prev)
- remque(so); /* crashes if so is not in a queue */
-
- if (so->so_tcpcb) {
- free(so->so_tcpcb);
- }
- g_free(so);
-}
-
-size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np)
-{
- int n, lss, total;
- struct sbuf *sb = &so->so_snd;
- int len = sb->sb_datalen - sb->sb_cc;
- int mss = so->so_tcpcb->t_maxseg;
-
- DEBUG_CALL("sopreprbuf");
- DEBUG_ARG("so = %p", so);
-
- if (len <= 0)
- return 0;
-
- iov[0].iov_base = sb->sb_wptr;
- iov[1].iov_base = NULL;
- iov[1].iov_len = 0;
- if (sb->sb_wptr < sb->sb_rptr) {
- iov[0].iov_len = sb->sb_rptr - sb->sb_wptr;
- /* Should never succeed, but... */
- if (iov[0].iov_len > len)
- iov[0].iov_len = len;
- if (iov[0].iov_len > mss)
- iov[0].iov_len -= iov[0].iov_len%mss;
- n = 1;
- } else {
- iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr;
- /* Should never succeed, but... */
- if (iov[0].iov_len > len) iov[0].iov_len = len;
- len -= iov[0].iov_len;
- if (len) {
- iov[1].iov_base = sb->sb_data;
- iov[1].iov_len = sb->sb_rptr - sb->sb_data;
- if(iov[1].iov_len > len)
- iov[1].iov_len = len;
- total = iov[0].iov_len + iov[1].iov_len;
- if (total > mss) {
- lss = total%mss;
- if (iov[1].iov_len > lss) {
- iov[1].iov_len -= lss;
- n = 2;
- } else {
- lss -= iov[1].iov_len;
- iov[0].iov_len -= lss;
- n = 1;
- }
- } else
- n = 2;
- } else {
- if (iov[0].iov_len > mss)
- iov[0].iov_len -= iov[0].iov_len%mss;
- n = 1;
- }
- }
- if (np)
- *np = n;
-
- return iov[0].iov_len + (n - 1) * iov[1].iov_len;
-}
-
-/*
- * Read from so's socket into sb_snd, updating all relevant sbuf fields
- * NOTE: This will only be called if it is select()ed for reading, so
- * a read() of 0 (or less) means it's disconnected
- */
-int
-soread(struct socket *so)
-{
- int n, nn;
- struct sbuf *sb = &so->so_snd;
- struct iovec iov[2];
-
- DEBUG_CALL("soread");
- DEBUG_ARG("so = %p", so);
-
- /*
- * No need to check if there's enough room to read.
- * soread wouldn't have been called if there weren't
- */
- sopreprbuf(so, iov, &n);
-
- nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0);
- if (nn <= 0) {
- if (nn < 0 && (errno == EINTR || errno == EAGAIN))
- return 0;
- else {
- int err;
- socklen_t elen = sizeof err;
- struct sockaddr_storage addr;
- struct sockaddr *paddr = (struct sockaddr *) &addr;
- socklen_t alen = sizeof addr;
-
- err = errno;
- if (nn == 0) {
- if (getpeername(so->s, paddr, &alen) < 0) {
- err = errno;
- } else {
- getsockopt(so->s, SOL_SOCKET, SO_ERROR,
- &err, &elen);
- }
- }
-
- DEBUG_MISC(" --- soread() disconnected, nn = %d, errno = %d-%s",
- nn, errno,strerror(errno));
- sofcantrcvmore(so);
-
- if (err == ECONNRESET || err == ECONNREFUSED
- || err == ENOTCONN || err == EPIPE) {
- tcp_drop(sototcpcb(so), err);
- } else {
- tcp_sockclosed(sototcpcb(so));
- }
- return -1;
- }
- }
-
- /*
- * If there was no error, try and read the second time round
- * We read again if n = 2 (ie, there's another part of the buffer)
- * and we read as much as we could in the first read
- * We don't test for <= 0 this time, because there legitimately
- * might not be any more data (since the socket is non-blocking),
- * a close will be detected on next iteration.
- * A return of -1 won't (shouldn't) happen, since it didn't happen above
- */
- if (n == 2 && nn == iov[0].iov_len) {
- int ret;
- ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0);
- if (ret > 0)
- nn += ret;
- }
-
- DEBUG_MISC(" ... read nn = %d bytes", nn);
-
- /* Update fields */
- sb->sb_cc += nn;
- sb->sb_wptr += nn;
- if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_wptr -= sb->sb_datalen;
- return nn;
-}
-
-int soreadbuf(struct socket *so, const char *buf, int size)
-{
- int n, nn, copy = size;
- struct sbuf *sb = &so->so_snd;
- struct iovec iov[2];
-
- DEBUG_CALL("soreadbuf");
- DEBUG_ARG("so = %p", so);
-
- /*
- * No need to check if there's enough room to read.
- * soread wouldn't have been called if there weren't
- */
- if (sopreprbuf(so, iov, &n) < size)
- goto err;
-
- nn = MIN(iov[0].iov_len, copy);
- memcpy(iov[0].iov_base, buf, nn);
-
- copy -= nn;
- buf += nn;
-
- if (copy == 0)
- goto done;
-
- memcpy(iov[1].iov_base, buf, copy);
-
-done:
- /* Update fields */
- sb->sb_cc += size;
- sb->sb_wptr += size;
- if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_wptr -= sb->sb_datalen;
- return size;
-err:
-
- sofcantrcvmore(so);
- tcp_sockclosed(sototcpcb(so));
- g_critical("soreadbuf buffer too small");
- return -1;
-}
-
-/*
- * Get urgent data
- *
- * When the socket is created, we set it SO_OOBINLINE,
- * so when OOB data arrives, we soread() it and everything
- * in the send buffer is sent as urgent data
- */
-int
-sorecvoob(struct socket *so)
-{
- struct tcpcb *tp = sototcpcb(so);
- int ret;
-
- DEBUG_CALL("sorecvoob");
- DEBUG_ARG("so = %p", so);
-
- /*
- * We take a guess at how much urgent data has arrived.
- * In most situations, when urgent data arrives, the next
- * read() should get all the urgent data. This guess will
- * be wrong however if more data arrives just after the
- * urgent data, or the read() doesn't return all the
- * urgent data.
- */
- ret = soread(so);
- if (ret > 0) {
- tp->snd_up = tp->snd_una + so->so_snd.sb_cc;
- tp->t_force = 1;
- tcp_output(tp);
- tp->t_force = 0;
- }
-
- return ret;
-}
-
-/*
- * Send urgent data
- * There's a lot duplicated code here, but...
- */
-int
-sosendoob(struct socket *so)
-{
- struct sbuf *sb = &so->so_rcv;
- char buff[2048]; /* XXX Shouldn't be sending more oob data than this */
-
- int n;
-
- DEBUG_CALL("sosendoob");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
-
- if (so->so_urgc > 2048)
- so->so_urgc = 2048; /* XXXX */
-
- if (sb->sb_rptr < sb->sb_wptr) {
- /* We can send it directly */
- n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
- } else {
- /*
- * Since there's no sendv or sendtov like writev,
- * we must copy all data to a linear buffer then
- * send it all
- */
- uint32_t urgc = so->so_urgc;
- int len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
- if (len > urgc) {
- len = urgc;
- }
- memcpy(buff, sb->sb_rptr, len);
- urgc -= len;
- if (urgc) {
- n = sb->sb_wptr - sb->sb_data;
- if (n > urgc) {
- n = urgc;
- }
- memcpy((buff + len), sb->sb_data, n);
- len += n;
- }
- n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
-#ifdef DEBUG
- if (n != len) {
- DEBUG_ERROR("Didn't send all data urgently XXXXX");
- }
-#endif
- }
-
- if (n < 0) {
- return n;
- }
- so->so_urgc -= n;
- DEBUG_MISC(" ---2 sent %d bytes urgent data, %d urgent bytes left", n, so->so_urgc);
-
- sb->sb_cc -= n;
- sb->sb_rptr += n;
- if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_rptr -= sb->sb_datalen;
-
- return n;
-}
-
-/*
- * Write data from so_rcv to so's socket,
- * updating all sbuf field as necessary
- */
-int
-sowrite(struct socket *so)
-{
- int n,nn;
- struct sbuf *sb = &so->so_rcv;
- int len = sb->sb_cc;
- struct iovec iov[2];
-
- DEBUG_CALL("sowrite");
- DEBUG_ARG("so = %p", so);
-
- if (so->so_urgc) {
- uint32_t expected = so->so_urgc;
- if (sosendoob(so) < expected) {
- /* Treat a short write as a fatal error too,
- * rather than continuing on and sending the urgent
- * data as if it were non-urgent and leaving the
- * so_urgc count wrong.
- */
- goto err_disconnected;
- }
- if (sb->sb_cc == 0)
- return 0;
- }
-
- /*
- * No need to check if there's something to write,
- * sowrite wouldn't have been called otherwise
- */
-
- iov[0].iov_base = sb->sb_rptr;
- iov[1].iov_base = NULL;
- iov[1].iov_len = 0;
- if (sb->sb_rptr < sb->sb_wptr) {
- iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
- /* Should never succeed, but... */
- if (iov[0].iov_len > len) iov[0].iov_len = len;
- n = 1;
- } else {
- iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
- if (iov[0].iov_len > len) iov[0].iov_len = len;
- len -= iov[0].iov_len;
- if (len) {
- iov[1].iov_base = sb->sb_data;
- iov[1].iov_len = sb->sb_wptr - sb->sb_data;
- if (iov[1].iov_len > len) iov[1].iov_len = len;
- n = 2;
- } else
- n = 1;
- }
- /* Check if there's urgent data to send, and if so, send it */
-
- nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0);
- /* This should never happen, but people tell me it does *shrug* */
- if (nn < 0 && (errno == EAGAIN || errno == EINTR))
- return 0;
-
- if (nn <= 0) {
- goto err_disconnected;
- }
-
- if (n == 2 && nn == iov[0].iov_len) {
- int ret;
- ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0);
- if (ret > 0)
- nn += ret;
- }
- DEBUG_MISC(" ... wrote nn = %d bytes", nn);
-
- /* Update sbuf */
- sb->sb_cc -= nn;
- sb->sb_rptr += nn;
- if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_rptr -= sb->sb_datalen;
-
- /*
- * If in DRAIN mode, and there's no more data, set
- * it CANTSENDMORE
- */
- if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0)
- sofcantsendmore(so);
-
- return nn;
-
-err_disconnected:
- DEBUG_MISC(" --- sowrite disconnected, so->so_state = %x, errno = %d",
- so->so_state, errno);
- sofcantsendmore(so);
- tcp_sockclosed(sototcpcb(so));
- return -1;
-}
-
-/*
- * recvfrom() a UDP socket
- */
-void
-sorecvfrom(struct socket *so)
-{
- struct sockaddr_storage addr;
- struct sockaddr_storage saddr, daddr;
- socklen_t addrlen = sizeof(struct sockaddr_storage);
-
- DEBUG_CALL("sorecvfrom");
- DEBUG_ARG("so = %p", so);
-
- if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */
- char buff[256];
- int len;
-
- len = recvfrom(so->s, buff, 256, 0,
- (struct sockaddr *)&addr, &addrlen);
- /* XXX Check if reply is "correct"? */
-
- if(len == -1 || len == 0) {
- uint8_t code=ICMP_UNREACH_PORT;
-
- if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
- else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET;
-
- DEBUG_MISC(" udp icmp rx errno = %d-%s",
- errno,strerror(errno));
- icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
- } else {
- icmp_reflect(so->so_m);
- so->so_m = NULL; /* Don't m_free() it again! */
- }
- /* No need for this socket anymore, udp_detach it */
- udp_detach(so);
- } else { /* A "normal" UDP packet */
- struct mbuf *m;
- int len;
-#ifdef _WIN32
- unsigned long n;
-#else
- int n;
-#endif
-
- if (ioctlsocket(so->s, FIONREAD, &n) != 0) {
- DEBUG_MISC(" ioctlsocket errno = %d-%s\n",
- errno,strerror(errno));
- return;
- }
- if (n == 0) {
- return;
- }
-
- m = m_get(so->slirp);
- if (!m) {
- return;
- }
- switch (so->so_ffamily) {
- case AF_INET:
- m->m_data += IF_MAXLINKHDR + sizeof(struct udpiphdr);
- break;
- case AF_INET6:
- m->m_data += IF_MAXLINKHDR + sizeof(struct ip6)
- + sizeof(struct udphdr);
- break;
- default:
- g_assert_not_reached();
- break;
- }
-
- /*
- * XXX Shouldn't FIONREAD packets destined for port 53,
- * but I don't know the max packet size for DNS lookups
- */
- len = M_FREEROOM(m);
- /* if (so->so_fport != htons(53)) { */
-
- if (n > len) {
- n = (m->m_data - m->m_dat) + m->m_len + n + 1;
- m_inc(m, n);
- len = M_FREEROOM(m);
- }
- /* } */
-
- m->m_len = recvfrom(so->s, m->m_data, len, 0,
- (struct sockaddr *)&addr, &addrlen);
- DEBUG_MISC(" did recvfrom %d, errno = %d-%s",
- m->m_len, errno,strerror(errno));
- if(m->m_len<0) {
- /* Report error as ICMP */
- switch (so->so_lfamily) {
- uint8_t code;
- case AF_INET:
- code = ICMP_UNREACH_PORT;
-
- if (errno == EHOSTUNREACH) {
- code = ICMP_UNREACH_HOST;
- } else if (errno == ENETUNREACH) {
- code = ICMP_UNREACH_NET;
- }
-
- DEBUG_MISC(" rx error, tx icmp ICMP_UNREACH:%i", code);
- icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
- break;
- case AF_INET6:
- code = ICMP6_UNREACH_PORT;
-
- if (errno == EHOSTUNREACH) {
- code = ICMP6_UNREACH_ADDRESS;
- } else if (errno == ENETUNREACH) {
- code = ICMP6_UNREACH_NO_ROUTE;
- }
-
- DEBUG_MISC(" rx error, tx icmp6 ICMP_UNREACH:%i", code);
- icmp6_send_error(so->so_m, ICMP6_UNREACH, code);
- break;
- default:
- g_assert_not_reached();
- break;
- }
- m_free(m);
- } else {
- /*
- * Hack: domain name lookup will be used the most for UDP,
- * and since they'll only be used once there's no need
- * for the 4 minute (or whatever) timeout... So we time them
- * out much quicker (10 seconds for now...)
- */
- if (so->so_expire) {
- if (so->so_fport == htons(53))
- so->so_expire = curtime + SO_EXPIREFAST;
- else
- so->so_expire = curtime + SO_EXPIRE;
- }
-
- /*
- * If this packet was destined for CTL_ADDR,
- * make it look like that's where it came from
- */
- saddr = addr;
- sotranslate_in(so, &saddr);
- daddr = so->lhost.ss;
-
- switch (so->so_ffamily) {
- case AF_INET:
- udp_output(so, m, (struct sockaddr_in *) &saddr,
- (struct sockaddr_in *) &daddr,
- so->so_iptos);
- break;
- case AF_INET6:
- udp6_output(so, m, (struct sockaddr_in6 *) &saddr,
- (struct sockaddr_in6 *) &daddr);
- break;
- default:
- g_assert_not_reached();
- break;
- }
- } /* rx error */
- } /* if ping packet */
-}
-
-/*
- * sendto() a socket
- */
-int
-sosendto(struct socket *so, struct mbuf *m)
-{
- int ret;
- struct sockaddr_storage addr;
-
- DEBUG_CALL("sosendto");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
-
- addr = so->fhost.ss;
- DEBUG_CALL(" sendto()ing)");
- sotranslate_out(so, &addr);
-
- /* Don't care what port we get */
- ret = sendto(so->s, m->m_data, m->m_len, 0,
- (struct sockaddr *)&addr, sockaddr_size(&addr));
- if (ret < 0)
- return -1;
-
- /*
- * Kill the socket if there's no reply in 4 minutes,
- * but only if it's an expirable socket
- */
- if (so->so_expire)
- so->so_expire = curtime + SO_EXPIRE;
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
- return 0;
-}
-
-/*
- * Listen for incoming TCP connections
- */
-struct socket *
-tcp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr,
- unsigned lport, int flags)
-{
- /* TODO: IPv6 */
- struct sockaddr_in addr;
- struct socket *so;
- int s, opt = 1;
- socklen_t addrlen = sizeof(addr);
- memset(&addr, 0, addrlen);
-
- DEBUG_CALL("tcp_listen");
- DEBUG_ARG("haddr = %s", inet_ntoa((struct in_addr){.s_addr = haddr}));
- DEBUG_ARG("hport = %d", ntohs(hport));
- DEBUG_ARG("laddr = %s", inet_ntoa((struct in_addr){.s_addr = laddr}));
- DEBUG_ARG("lport = %d", ntohs(lport));
- DEBUG_ARG("flags = %x", flags);
-
- so = socreate(slirp);
-
- /* Don't tcp_attach... we don't need so_snd nor so_rcv */
- if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) {
- g_free(so);
- return NULL;
- }
- insque(so, &slirp->tcb);
-
- /*
- * SS_FACCEPTONCE sockets must time out.
- */
- if (flags & SS_FACCEPTONCE)
- so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
-
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= (SS_FACCEPTCONN | flags);
- so->so_lfamily = AF_INET;
- so->so_lport = lport; /* Kept in network format */
- so->so_laddr.s_addr = laddr; /* Ditto */
-
- addr.sin_family = AF_INET;
- addr.sin_addr.s_addr = haddr;
- addr.sin_port = hport;
-
- if (((s = slirp_socket(AF_INET,SOCK_STREAM,0)) < 0) ||
- (slirp_socket_set_fast_reuse(s) < 0) ||
- (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) ||
- (listen(s,1) < 0)) {
- int tmperrno = errno; /* Don't clobber the real reason we failed */
-
- if (s >= 0) {
- closesocket(s);
- }
- sofree(so);
- /* Restore the real errno */
-#ifdef _WIN32
- WSASetLastError(tmperrno);
-#else
- errno = tmperrno;
-#endif
- return NULL;
- }
- setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
- opt = 1;
- setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(int));
-
- getsockname(s,(struct sockaddr *)&addr,&addrlen);
- so->so_ffamily = AF_INET;
- 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 = slirp->vhost_addr;
- else
- so->so_faddr = addr.sin_addr;
-
- so->s = s;
- return so;
-}
-
-/*
- * Various session state calls
- * XXX Should be #define's
- * The socket state stuff needs work, these often get call 2 or 3
- * times each when only 1 was needed
- */
-void
-soisfconnecting(struct socket *so)
-{
- so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE|
- SS_FCANTSENDMORE|SS_FWDRAIN);
- so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
-}
-
-void
-soisfconnected(struct socket *so)
-{
- so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF);
- so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
-}
-
-static void
-sofcantrcvmore(struct socket *so)
-{
- if ((so->so_state & SS_NOFDREF) == 0) {
- shutdown(so->s,0);
- }
- so->so_state &= ~(SS_ISFCONNECTING);
- if (so->so_state & SS_FCANTSENDMORE) {
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_NOFDREF; /* Don't select it */
- } else {
- so->so_state |= SS_FCANTRCVMORE;
- }
-}
-
-static void
-sofcantsendmore(struct socket *so)
-{
- if ((so->so_state & SS_NOFDREF) == 0) {
- shutdown(so->s,1); /* send FIN to fhost */
- }
- so->so_state &= ~(SS_ISFCONNECTING);
- if (so->so_state & SS_FCANTRCVMORE) {
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_NOFDREF; /* as above */
- } else {
- so->so_state |= SS_FCANTSENDMORE;
- }
-}
-
-/*
- * Set write drain mode
- * Set CANTSENDMORE once all data has been write()n
- */
-void
-sofwdrain(struct socket *so)
-{
- if (so->so_rcv.sb_cc)
- so->so_state |= SS_FWDRAIN;
- else
- sofcantsendmore(so);
-}
-
-/*
- * Translate addr in host addr when it is a virtual address
- */
-void sotranslate_out(struct socket *so, struct sockaddr_storage *addr)
-{
- Slirp *slirp = so->slirp;
- struct sockaddr_in *sin = (struct sockaddr_in *)addr;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
-
- switch (addr->ss_family) {
- case AF_INET:
- if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
- slirp->vnetwork_addr.s_addr) {
- /* It's an alias */
- if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) {
- if (get_dns_addr(&sin->sin_addr) < 0) {
- sin->sin_addr = loopback_addr;
- }
- } else {
- sin->sin_addr = loopback_addr;
- }
- }
-
- DEBUG_MISC(" addr.sin_port=%d, addr.sin_addr.s_addr=%.16s",
- ntohs(sin->sin_port), inet_ntoa(sin->sin_addr));
- break;
-
- case AF_INET6:
- if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6,
- slirp->vprefix_len)) {
- if (in6_equal(&so->so_faddr6, &slirp->vnameserver_addr6)) {
- uint32_t scope_id;
- if (get_dns6_addr(&sin6->sin6_addr, &scope_id) >= 0) {
- sin6->sin6_scope_id = scope_id;
- } else {
- sin6->sin6_addr = in6addr_loopback;
- }
- } else {
- sin6->sin6_addr = in6addr_loopback;
- }
- }
- break;
-
- default:
- break;
- }
-}
-
-void sotranslate_in(struct socket *so, struct sockaddr_storage *addr)
-{
- Slirp *slirp = so->slirp;
- struct sockaddr_in *sin = (struct sockaddr_in *)addr;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
-
- switch (addr->ss_family) {
- case AF_INET:
- if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
- slirp->vnetwork_addr.s_addr) {
- uint32_t inv_mask = ~slirp->vnetwork_mask.s_addr;
-
- if ((so->so_faddr.s_addr & inv_mask) == inv_mask) {
- sin->sin_addr = slirp->vhost_addr;
- } else if (sin->sin_addr.s_addr == loopback_addr.s_addr ||
- so->so_faddr.s_addr != slirp->vhost_addr.s_addr) {
- sin->sin_addr = so->so_faddr;
- }
- }
- break;
-
- case AF_INET6:
- if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6,
- slirp->vprefix_len)) {
- if (in6_equal(&sin6->sin6_addr, &in6addr_loopback)
- || !in6_equal(&so->so_faddr6, &slirp->vhost_addr6)) {
- sin6->sin6_addr = so->so_faddr6;
- }
- }
- break;
-
- default:
- break;
- }
-}
-
-/*
- * Translate connections from localhost to the real hostname
- */
-void sotranslate_accept(struct socket *so)
-{
- Slirp *slirp = so->slirp;
-
- switch (so->so_ffamily) {
- case AF_INET:
- if (so->so_faddr.s_addr == INADDR_ANY ||
- (so->so_faddr.s_addr & loopback_mask) ==
- (loopback_addr.s_addr & loopback_mask)) {
- so->so_faddr = slirp->vhost_addr;
- }
- break;
-
- case AF_INET6:
- if (in6_equal(&so->so_faddr6, &in6addr_any) ||
- in6_equal(&so->so_faddr6, &in6addr_loopback)) {
- so->so_faddr6 = slirp->vhost_addr6;
- }
- break;
-
- default:
- break;
- }
-}
-
-void sodrop(struct socket *s, int num)
-{
- if (sbdrop(&s->so_snd, num)) {
- s->slirp->cb->notify(s->slirp->opaque);
- }
-}