2 * Copyright (c) 1995 Danny Gasparovski.
4 * Please read the file COPYRIGHT for the
5 * terms and conditions of the copyright.
11 #include <sys/filio.h>
14 static void sofcantrcvmore(struct socket
*so
);
15 static void sofcantsendmore(struct socket
*so
);
17 struct socket
*solookup(struct socket
**last
, struct socket
*head
,
18 struct sockaddr_storage
*lhost
, struct sockaddr_storage
*fhost
)
20 struct socket
*so
= *last
;
23 if (so
!= head
&& sockaddr_equal(&(so
->lhost
.ss
), lhost
)
24 && (!fhost
|| sockaddr_equal(&so
->fhost
.ss
, fhost
))) {
28 for (so
= head
->so_next
; so
!= head
; so
= so
->so_next
) {
29 if (sockaddr_equal(&(so
->lhost
.ss
), lhost
)
30 && (!fhost
|| sockaddr_equal(&so
->fhost
.ss
, fhost
))) {
36 return (struct socket
*)NULL
;
40 * Create a new socket, initialise the fields
41 * It is the responsibility of the caller to
42 * insque() it into the correct linked-list
45 socreate(Slirp
*slirp
)
47 struct socket
*so
= g_new(struct socket
, 1);
49 memset(so
, 0, sizeof(struct socket
));
50 so
->so_state
= SS_NOFDREF
;
59 * Remove references to so from the given message queue.
62 soqfree(struct socket
*so
, struct quehead
*qh
)
66 for (ifq
= (struct mbuf
*) qh
->qh_link
;
67 (struct quehead
*) ifq
!= qh
;
68 ifq
= ifq
->ifq_next
) {
69 if (ifq
->ifq_so
== so
) {
72 for (ifm
= ifq
->ifs_next
; ifm
!= ifq
; ifm
= ifm
->ifs_next
) {
80 * remque and free a socket, clobber cache
83 sofree(struct socket
*so
)
85 Slirp
*slirp
= so
->slirp
;
87 soqfree(so
, &slirp
->if_fastq
);
88 soqfree(so
, &slirp
->if_batchq
);
90 if (so
== slirp
->tcp_last_so
) {
91 slirp
->tcp_last_so
= &slirp
->tcb
;
92 } else if (so
== slirp
->udp_last_so
) {
93 slirp
->udp_last_so
= &slirp
->udb
;
94 } else if (so
== slirp
->icmp_last_so
) {
95 slirp
->icmp_last_so
= &slirp
->icmp
;
99 if(so
->so_next
&& so
->so_prev
)
100 remque(so
); /* crashes if so is not in a queue */
108 size_t sopreprbuf(struct socket
*so
, struct iovec
*iov
, int *np
)
111 struct sbuf
*sb
= &so
->so_snd
;
112 int len
= sb
->sb_datalen
- sb
->sb_cc
;
113 int mss
= so
->so_tcpcb
->t_maxseg
;
115 DEBUG_CALL("sopreprbuf");
116 DEBUG_ARG("so = %p", so
);
121 iov
[0].iov_base
= sb
->sb_wptr
;
122 iov
[1].iov_base
= NULL
;
124 if (sb
->sb_wptr
< sb
->sb_rptr
) {
125 iov
[0].iov_len
= sb
->sb_rptr
- sb
->sb_wptr
;
126 /* Should never succeed, but... */
127 if (iov
[0].iov_len
> len
)
128 iov
[0].iov_len
= len
;
129 if (iov
[0].iov_len
> mss
)
130 iov
[0].iov_len
-= iov
[0].iov_len
%mss
;
133 iov
[0].iov_len
= (sb
->sb_data
+ sb
->sb_datalen
) - sb
->sb_wptr
;
134 /* Should never succeed, but... */
135 if (iov
[0].iov_len
> len
) iov
[0].iov_len
= len
;
136 len
-= iov
[0].iov_len
;
138 iov
[1].iov_base
= sb
->sb_data
;
139 iov
[1].iov_len
= sb
->sb_rptr
- sb
->sb_data
;
140 if(iov
[1].iov_len
> len
)
141 iov
[1].iov_len
= len
;
142 total
= iov
[0].iov_len
+ iov
[1].iov_len
;
145 if (iov
[1].iov_len
> lss
) {
146 iov
[1].iov_len
-= lss
;
149 lss
-= iov
[1].iov_len
;
150 iov
[0].iov_len
-= lss
;
156 if (iov
[0].iov_len
> mss
)
157 iov
[0].iov_len
-= iov
[0].iov_len
%mss
;
164 return iov
[0].iov_len
+ (n
- 1) * iov
[1].iov_len
;
168 * Read from so's socket into sb_snd, updating all relevant sbuf fields
169 * NOTE: This will only be called if it is select()ed for reading, so
170 * a read() of 0 (or less) means it's disconnected
173 soread(struct socket
*so
)
176 struct sbuf
*sb
= &so
->so_snd
;
179 DEBUG_CALL("soread");
180 DEBUG_ARG("so = %p", so
);
183 * No need to check if there's enough room to read.
184 * soread wouldn't have been called if there weren't
186 sopreprbuf(so
, iov
, &n
);
188 nn
= recv(so
->s
, iov
[0].iov_base
, iov
[0].iov_len
,0);
190 if (nn
< 0 && (errno
== EINTR
|| errno
== EAGAIN
))
194 socklen_t elen
= sizeof err
;
195 struct sockaddr_storage addr
;
196 struct sockaddr
*paddr
= (struct sockaddr
*) &addr
;
197 socklen_t alen
= sizeof addr
;
201 if (getpeername(so
->s
, paddr
, &alen
) < 0) {
204 getsockopt(so
->s
, SOL_SOCKET
, SO_ERROR
,
209 DEBUG_MISC(" --- soread() disconnected, nn = %d, errno = %d-%s",
210 nn
, errno
,strerror(errno
));
213 if (err
== ECONNRESET
|| err
== ECONNREFUSED
214 || err
== ENOTCONN
|| err
== EPIPE
) {
215 tcp_drop(sototcpcb(so
), err
);
217 tcp_sockclosed(sototcpcb(so
));
224 * If there was no error, try and read the second time round
225 * We read again if n = 2 (ie, there's another part of the buffer)
226 * and we read as much as we could in the first read
227 * We don't test for <= 0 this time, because there legitimately
228 * might not be any more data (since the socket is non-blocking),
229 * a close will be detected on next iteration.
230 * A return of -1 won't (shouldn't) happen, since it didn't happen above
232 if (n
== 2 && nn
== iov
[0].iov_len
) {
234 ret
= recv(so
->s
, iov
[1].iov_base
, iov
[1].iov_len
,0);
239 DEBUG_MISC(" ... read nn = %d bytes", nn
);
244 if (sb
->sb_wptr
>= (sb
->sb_data
+ sb
->sb_datalen
))
245 sb
->sb_wptr
-= sb
->sb_datalen
;
249 int soreadbuf(struct socket
*so
, const char *buf
, int size
)
251 int n
, nn
, copy
= size
;
252 struct sbuf
*sb
= &so
->so_snd
;
255 DEBUG_CALL("soreadbuf");
256 DEBUG_ARG("so = %p", so
);
259 * No need to check if there's enough room to read.
260 * soread wouldn't have been called if there weren't
262 if (sopreprbuf(so
, iov
, &n
) < size
)
265 nn
= MIN(iov
[0].iov_len
, copy
);
266 memcpy(iov
[0].iov_base
, buf
, nn
);
274 memcpy(iov
[1].iov_base
, buf
, copy
);
280 if (sb
->sb_wptr
>= (sb
->sb_data
+ sb
->sb_datalen
))
281 sb
->sb_wptr
-= sb
->sb_datalen
;
286 tcp_sockclosed(sototcpcb(so
));
287 g_critical("soreadbuf buffer too small");
294 * When the socket is created, we set it SO_OOBINLINE,
295 * so when OOB data arrives, we soread() it and everything
296 * in the send buffer is sent as urgent data
299 sorecvoob(struct socket
*so
)
301 struct tcpcb
*tp
= sototcpcb(so
);
304 DEBUG_CALL("sorecvoob");
305 DEBUG_ARG("so = %p", so
);
308 * We take a guess at how much urgent data has arrived.
309 * In most situations, when urgent data arrives, the next
310 * read() should get all the urgent data. This guess will
311 * be wrong however if more data arrives just after the
312 * urgent data, or the read() doesn't return all the
317 tp
->snd_up
= tp
->snd_una
+ so
->so_snd
.sb_cc
;
328 * There's a lot duplicated code here, but...
331 sosendoob(struct socket
*so
)
333 struct sbuf
*sb
= &so
->so_rcv
;
334 char buff
[2048]; /* XXX Shouldn't be sending more oob data than this */
338 DEBUG_CALL("sosendoob");
339 DEBUG_ARG("so = %p", so
);
340 DEBUG_ARG("sb->sb_cc = %d", sb
->sb_cc
);
342 if (so
->so_urgc
> 2048)
343 so
->so_urgc
= 2048; /* XXXX */
345 if (sb
->sb_rptr
< sb
->sb_wptr
) {
346 /* We can send it directly */
347 n
= slirp_send(so
, sb
->sb_rptr
, so
->so_urgc
, (MSG_OOB
)); /* |MSG_DONTWAIT)); */
350 * Since there's no sendv or sendtov like writev,
351 * we must copy all data to a linear buffer then
354 uint32_t urgc
= so
->so_urgc
;
355 int len
= (sb
->sb_data
+ sb
->sb_datalen
) - sb
->sb_rptr
;
359 memcpy(buff
, sb
->sb_rptr
, len
);
362 n
= sb
->sb_wptr
- sb
->sb_data
;
366 memcpy((buff
+ len
), sb
->sb_data
, n
);
369 n
= slirp_send(so
, buff
, len
, (MSG_OOB
)); /* |MSG_DONTWAIT)); */
372 DEBUG_ERROR("Didn't send all data urgently XXXXX");
381 DEBUG_MISC(" ---2 sent %d bytes urgent data, %d urgent bytes left", n
, so
->so_urgc
);
385 if (sb
->sb_rptr
>= (sb
->sb_data
+ sb
->sb_datalen
))
386 sb
->sb_rptr
-= sb
->sb_datalen
;
392 * Write data from so_rcv to so's socket,
393 * updating all sbuf field as necessary
396 sowrite(struct socket
*so
)
399 struct sbuf
*sb
= &so
->so_rcv
;
403 DEBUG_CALL("sowrite");
404 DEBUG_ARG("so = %p", so
);
407 uint32_t expected
= so
->so_urgc
;
408 if (sosendoob(so
) < expected
) {
409 /* Treat a short write as a fatal error too,
410 * rather than continuing on and sending the urgent
411 * data as if it were non-urgent and leaving the
412 * so_urgc count wrong.
414 goto err_disconnected
;
421 * No need to check if there's something to write,
422 * sowrite wouldn't have been called otherwise
425 iov
[0].iov_base
= sb
->sb_rptr
;
426 iov
[1].iov_base
= NULL
;
428 if (sb
->sb_rptr
< sb
->sb_wptr
) {
429 iov
[0].iov_len
= sb
->sb_wptr
- sb
->sb_rptr
;
430 /* Should never succeed, but... */
431 if (iov
[0].iov_len
> len
) iov
[0].iov_len
= len
;
434 iov
[0].iov_len
= (sb
->sb_data
+ sb
->sb_datalen
) - sb
->sb_rptr
;
435 if (iov
[0].iov_len
> len
) iov
[0].iov_len
= len
;
436 len
-= iov
[0].iov_len
;
438 iov
[1].iov_base
= sb
->sb_data
;
439 iov
[1].iov_len
= sb
->sb_wptr
- sb
->sb_data
;
440 if (iov
[1].iov_len
> len
) iov
[1].iov_len
= len
;
445 /* Check if there's urgent data to send, and if so, send it */
447 nn
= slirp_send(so
, iov
[0].iov_base
, iov
[0].iov_len
,0);
448 /* This should never happen, but people tell me it does *shrug* */
449 if (nn
< 0 && (errno
== EAGAIN
|| errno
== EINTR
))
453 goto err_disconnected
;
456 if (n
== 2 && nn
== iov
[0].iov_len
) {
458 ret
= slirp_send(so
, iov
[1].iov_base
, iov
[1].iov_len
,0);
462 DEBUG_MISC(" ... wrote nn = %d bytes", nn
);
467 if (sb
->sb_rptr
>= (sb
->sb_data
+ sb
->sb_datalen
))
468 sb
->sb_rptr
-= sb
->sb_datalen
;
471 * If in DRAIN mode, and there's no more data, set
474 if ((so
->so_state
& SS_FWDRAIN
) && sb
->sb_cc
== 0)
480 DEBUG_MISC(" --- sowrite disconnected, so->so_state = %x, errno = %d",
481 so
->so_state
, errno
);
483 tcp_sockclosed(sototcpcb(so
));
488 * recvfrom() a UDP socket
491 sorecvfrom(struct socket
*so
)
493 struct sockaddr_storage addr
;
494 struct sockaddr_storage saddr
, daddr
;
495 socklen_t addrlen
= sizeof(struct sockaddr_storage
);
497 DEBUG_CALL("sorecvfrom");
498 DEBUG_ARG("so = %p", so
);
500 if (so
->so_type
== IPPROTO_ICMP
) { /* This is a "ping" reply */
504 len
= recvfrom(so
->s
, buff
, 256, 0,
505 (struct sockaddr
*)&addr
, &addrlen
);
506 /* XXX Check if reply is "correct"? */
508 if(len
== -1 || len
== 0) {
509 uint8_t code
=ICMP_UNREACH_PORT
;
511 if(errno
== EHOSTUNREACH
) code
=ICMP_UNREACH_HOST
;
512 else if(errno
== ENETUNREACH
) code
=ICMP_UNREACH_NET
;
514 DEBUG_MISC(" udp icmp rx errno = %d-%s",
515 errno
,strerror(errno
));
516 icmp_send_error(so
->so_m
, ICMP_UNREACH
, code
, 0, strerror(errno
));
518 icmp_reflect(so
->so_m
);
519 so
->so_m
= NULL
; /* Don't m_free() it again! */
521 /* No need for this socket anymore, udp_detach it */
523 } else { /* A "normal" UDP packet */
532 if (ioctlsocket(so
->s
, FIONREAD
, &n
) != 0) {
533 DEBUG_MISC(" ioctlsocket errno = %d-%s\n",
534 errno
,strerror(errno
));
541 m
= m_get(so
->slirp
);
545 switch (so
->so_ffamily
) {
547 m
->m_data
+= IF_MAXLINKHDR
+ sizeof(struct udpiphdr
);
550 m
->m_data
+= IF_MAXLINKHDR
+ sizeof(struct ip6
)
551 + sizeof(struct udphdr
);
554 g_assert_not_reached();
559 * XXX Shouldn't FIONREAD packets destined for port 53,
560 * but I don't know the max packet size for DNS lookups
563 /* if (so->so_fport != htons(53)) { */
566 n
= (m
->m_data
- m
->m_dat
) + m
->m_len
+ n
+ 1;
572 m
->m_len
= recvfrom(so
->s
, m
->m_data
, len
, 0,
573 (struct sockaddr
*)&addr
, &addrlen
);
574 DEBUG_MISC(" did recvfrom %d, errno = %d-%s",
575 m
->m_len
, errno
,strerror(errno
));
577 /* Report error as ICMP */
578 switch (so
->so_lfamily
) {
581 code
= ICMP_UNREACH_PORT
;
583 if (errno
== EHOSTUNREACH
) {
584 code
= ICMP_UNREACH_HOST
;
585 } else if (errno
== ENETUNREACH
) {
586 code
= ICMP_UNREACH_NET
;
589 DEBUG_MISC(" rx error, tx icmp ICMP_UNREACH:%i", code
);
590 icmp_send_error(so
->so_m
, ICMP_UNREACH
, code
, 0, strerror(errno
));
593 code
= ICMP6_UNREACH_PORT
;
595 if (errno
== EHOSTUNREACH
) {
596 code
= ICMP6_UNREACH_ADDRESS
;
597 } else if (errno
== ENETUNREACH
) {
598 code
= ICMP6_UNREACH_NO_ROUTE
;
601 DEBUG_MISC(" rx error, tx icmp6 ICMP_UNREACH:%i", code
);
602 icmp6_send_error(so
->so_m
, ICMP6_UNREACH
, code
);
605 g_assert_not_reached();
611 * Hack: domain name lookup will be used the most for UDP,
612 * and since they'll only be used once there's no need
613 * for the 4 minute (or whatever) timeout... So we time them
614 * out much quicker (10 seconds for now...)
617 if (so
->so_fport
== htons(53))
618 so
->so_expire
= curtime
+ SO_EXPIREFAST
;
620 so
->so_expire
= curtime
+ SO_EXPIRE
;
624 * If this packet was destined for CTL_ADDR,
625 * make it look like that's where it came from
628 sotranslate_in(so
, &saddr
);
629 daddr
= so
->lhost
.ss
;
631 switch (so
->so_ffamily
) {
633 udp_output(so
, m
, (struct sockaddr_in
*) &saddr
,
634 (struct sockaddr_in
*) &daddr
,
638 udp6_output(so
, m
, (struct sockaddr_in6
*) &saddr
,
639 (struct sockaddr_in6
*) &daddr
);
642 g_assert_not_reached();
646 } /* if ping packet */
653 sosendto(struct socket
*so
, struct mbuf
*m
)
656 struct sockaddr_storage addr
;
658 DEBUG_CALL("sosendto");
659 DEBUG_ARG("so = %p", so
);
660 DEBUG_ARG("m = %p", m
);
663 DEBUG_CALL(" sendto()ing)");
664 sotranslate_out(so
, &addr
);
666 /* Don't care what port we get */
667 ret
= sendto(so
->s
, m
->m_data
, m
->m_len
, 0,
668 (struct sockaddr
*)&addr
, sockaddr_size(&addr
));
673 * Kill the socket if there's no reply in 4 minutes,
674 * but only if it's an expirable socket
677 so
->so_expire
= curtime
+ SO_EXPIRE
;
678 so
->so_state
&= SS_PERSISTENT_MASK
;
679 so
->so_state
|= SS_ISFCONNECTED
; /* So that it gets select()ed */
684 * Listen for incoming TCP connections
687 tcp_listen(Slirp
*slirp
, uint32_t haddr
, unsigned hport
, uint32_t laddr
,
688 unsigned lport
, int flags
)
691 struct sockaddr_in addr
;
694 socklen_t addrlen
= sizeof(addr
);
695 memset(&addr
, 0, addrlen
);
697 DEBUG_CALL("tcp_listen");
698 DEBUG_ARG("haddr = %s", inet_ntoa((struct in_addr
){.s_addr
= haddr
}));
699 DEBUG_ARG("hport = %d", ntohs(hport
));
700 DEBUG_ARG("laddr = %s", inet_ntoa((struct in_addr
){.s_addr
= laddr
}));
701 DEBUG_ARG("lport = %d", ntohs(lport
));
702 DEBUG_ARG("flags = %x", flags
);
704 so
= socreate(slirp
);
706 /* Don't tcp_attach... we don't need so_snd nor so_rcv */
707 if ((so
->so_tcpcb
= tcp_newtcpcb(so
)) == NULL
) {
711 insque(so
, &slirp
->tcb
);
714 * SS_FACCEPTONCE sockets must time out.
716 if (flags
& SS_FACCEPTONCE
)
717 so
->so_tcpcb
->t_timer
[TCPT_KEEP
] = TCPTV_KEEP_INIT
*2;
719 so
->so_state
&= SS_PERSISTENT_MASK
;
720 so
->so_state
|= (SS_FACCEPTCONN
| flags
);
721 so
->so_lfamily
= AF_INET
;
722 so
->so_lport
= lport
; /* Kept in network format */
723 so
->so_laddr
.s_addr
= laddr
; /* Ditto */
725 addr
.sin_family
= AF_INET
;
726 addr
.sin_addr
.s_addr
= haddr
;
727 addr
.sin_port
= hport
;
729 if (((s
= slirp_socket(AF_INET
,SOCK_STREAM
,0)) < 0) ||
730 (slirp_socket_set_fast_reuse(s
) < 0) ||
731 (bind(s
,(struct sockaddr
*)&addr
, sizeof(addr
)) < 0) ||
733 int tmperrno
= errno
; /* Don't clobber the real reason we failed */
739 /* Restore the real errno */
741 WSASetLastError(tmperrno
);
747 setsockopt(s
, SOL_SOCKET
, SO_OOBINLINE
, &opt
, sizeof(int));
749 setsockopt(s
, IPPROTO_TCP
, TCP_NODELAY
, &opt
, sizeof(int));
751 getsockname(s
,(struct sockaddr
*)&addr
,&addrlen
);
752 so
->so_ffamily
= AF_INET
;
753 so
->so_fport
= addr
.sin_port
;
754 if (addr
.sin_addr
.s_addr
== 0 || addr
.sin_addr
.s_addr
== loopback_addr
.s_addr
)
755 so
->so_faddr
= slirp
->vhost_addr
;
757 so
->so_faddr
= addr
.sin_addr
;
764 * Various session state calls
765 * XXX Should be #define's
766 * The socket state stuff needs work, these often get call 2 or 3
767 * times each when only 1 was needed
770 soisfconnecting(struct socket
*so
)
772 so
->so_state
&= ~(SS_NOFDREF
|SS_ISFCONNECTED
|SS_FCANTRCVMORE
|
773 SS_FCANTSENDMORE
|SS_FWDRAIN
);
774 so
->so_state
|= SS_ISFCONNECTING
; /* Clobber other states */
778 soisfconnected(struct socket
*so
)
780 so
->so_state
&= ~(SS_ISFCONNECTING
|SS_FWDRAIN
|SS_NOFDREF
);
781 so
->so_state
|= SS_ISFCONNECTED
; /* Clobber other states */
785 sofcantrcvmore(struct socket
*so
)
787 if ((so
->so_state
& SS_NOFDREF
) == 0) {
790 so
->so_state
&= ~(SS_ISFCONNECTING
);
791 if (so
->so_state
& SS_FCANTSENDMORE
) {
792 so
->so_state
&= SS_PERSISTENT_MASK
;
793 so
->so_state
|= SS_NOFDREF
; /* Don't select it */
795 so
->so_state
|= SS_FCANTRCVMORE
;
800 sofcantsendmore(struct socket
*so
)
802 if ((so
->so_state
& SS_NOFDREF
) == 0) {
803 shutdown(so
->s
,1); /* send FIN to fhost */
805 so
->so_state
&= ~(SS_ISFCONNECTING
);
806 if (so
->so_state
& SS_FCANTRCVMORE
) {
807 so
->so_state
&= SS_PERSISTENT_MASK
;
808 so
->so_state
|= SS_NOFDREF
; /* as above */
810 so
->so_state
|= SS_FCANTSENDMORE
;
815 * Set write drain mode
816 * Set CANTSENDMORE once all data has been write()n
819 sofwdrain(struct socket
*so
)
821 if (so
->so_rcv
.sb_cc
)
822 so
->so_state
|= SS_FWDRAIN
;
828 * Translate addr in host addr when it is a virtual address
830 void sotranslate_out(struct socket
*so
, struct sockaddr_storage
*addr
)
832 Slirp
*slirp
= so
->slirp
;
833 struct sockaddr_in
*sin
= (struct sockaddr_in
*)addr
;
834 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)addr
;
836 switch (addr
->ss_family
) {
838 if ((so
->so_faddr
.s_addr
& slirp
->vnetwork_mask
.s_addr
) ==
839 slirp
->vnetwork_addr
.s_addr
) {
841 if (so
->so_faddr
.s_addr
== slirp
->vnameserver_addr
.s_addr
) {
842 if (get_dns_addr(&sin
->sin_addr
) < 0) {
843 sin
->sin_addr
= loopback_addr
;
846 sin
->sin_addr
= loopback_addr
;
850 DEBUG_MISC(" addr.sin_port=%d, addr.sin_addr.s_addr=%.16s",
851 ntohs(sin
->sin_port
), inet_ntoa(sin
->sin_addr
));
855 if (in6_equal_net(&so
->so_faddr6
, &slirp
->vprefix_addr6
,
856 slirp
->vprefix_len
)) {
857 if (in6_equal(&so
->so_faddr6
, &slirp
->vnameserver_addr6
)) {
859 if (get_dns6_addr(&sin6
->sin6_addr
, &scope_id
) >= 0) {
860 sin6
->sin6_scope_id
= scope_id
;
862 sin6
->sin6_addr
= in6addr_loopback
;
865 sin6
->sin6_addr
= in6addr_loopback
;
875 void sotranslate_in(struct socket
*so
, struct sockaddr_storage
*addr
)
877 Slirp
*slirp
= so
->slirp
;
878 struct sockaddr_in
*sin
= (struct sockaddr_in
*)addr
;
879 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)addr
;
881 switch (addr
->ss_family
) {
883 if ((so
->so_faddr
.s_addr
& slirp
->vnetwork_mask
.s_addr
) ==
884 slirp
->vnetwork_addr
.s_addr
) {
885 uint32_t inv_mask
= ~slirp
->vnetwork_mask
.s_addr
;
887 if ((so
->so_faddr
.s_addr
& inv_mask
) == inv_mask
) {
888 sin
->sin_addr
= slirp
->vhost_addr
;
889 } else if (sin
->sin_addr
.s_addr
== loopback_addr
.s_addr
||
890 so
->so_faddr
.s_addr
!= slirp
->vhost_addr
.s_addr
) {
891 sin
->sin_addr
= so
->so_faddr
;
897 if (in6_equal_net(&so
->so_faddr6
, &slirp
->vprefix_addr6
,
898 slirp
->vprefix_len
)) {
899 if (in6_equal(&sin6
->sin6_addr
, &in6addr_loopback
)
900 || !in6_equal(&so
->so_faddr6
, &slirp
->vhost_addr6
)) {
901 sin6
->sin6_addr
= so
->so_faddr6
;
912 * Translate connections from localhost to the real hostname
914 void sotranslate_accept(struct socket
*so
)
916 Slirp
*slirp
= so
->slirp
;
918 switch (so
->so_ffamily
) {
920 if (so
->so_faddr
.s_addr
== INADDR_ANY
||
921 (so
->so_faddr
.s_addr
& loopback_mask
) ==
922 (loopback_addr
.s_addr
& loopback_mask
)) {
923 so
->so_faddr
= slirp
->vhost_addr
;
928 if (in6_equal(&so
->so_faddr6
, &in6addr_any
) ||
929 in6_equal(&so
->so_faddr6
, &in6addr_loopback
)) {
930 so
->so_faddr6
= slirp
->vhost_addr6
;
939 void sodrop(struct socket
*s
, int num
)
941 if (sbdrop(&s
->so_snd
, num
)) {
942 s
->slirp
->cb
->notify(s
->slirp
->opaque
);