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/*
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---|---|
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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 "qemu-common.h" |
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#include <slirp.h> |
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#include "ip_icmp.h" |
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#ifdef __sun__
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#include <sys/filio.h> |
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#endif
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|
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static void sofcantrcvmore(struct socket *so); |
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static void sofcantsendmore(struct socket *so); |
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struct socket *
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solookup(struct socket *head, struct in_addr laddr, u_int lport, |
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struct in_addr faddr, u_int fport)
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{ |
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struct socket *so;
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for (so = head->so_next; so != head; so = so->so_next) {
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if (so->so_lport == lport &&
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so->so_laddr.s_addr == laddr.s_addr && |
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so->so_faddr.s_addr == faddr.s_addr && |
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so->so_fport == fport) |
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break;
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} |
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if (so == head)
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return (struct socket *)NULL; |
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return so;
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} |
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|
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/*
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* Create a new socket, initialise the fields
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* It is the responsibility of the caller to
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* insque() it into the correct linked-list
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*/
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struct socket *
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socreate(Slirp *slirp) |
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{ |
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struct socket *so;
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|
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so = (struct socket *)malloc(sizeof(struct socket)); |
49 |
if(so) {
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memset(so, 0, sizeof(struct socket)); |
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so->so_state = SS_NOFDREF; |
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so->s = -1;
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so->slirp = slirp; |
54 |
} |
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return(so);
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} |
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|
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/*
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* remque and free a socket, clobber cache
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*/
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void
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sofree(struct socket *so)
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{ |
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Slirp *slirp = so->slirp; |
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if (so->so_emu==EMU_RSH && so->extra) {
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sofree(so->extra); |
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so->extra=NULL;
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} |
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if (so == slirp->tcp_last_so) {
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slirp->tcp_last_so = &slirp->tcb; |
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} else if (so == slirp->udp_last_so) { |
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slirp->udp_last_so = &slirp->udb; |
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} |
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m_free(so->so_m); |
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if(so->so_next && so->so_prev)
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remque(so); /* crashes if so is not in a queue */
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|
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free(so); |
81 |
} |
82 |
|
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size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np) |
84 |
{ |
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int n, lss, total;
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struct sbuf *sb = &so->so_snd;
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int len = sb->sb_datalen - sb->sb_cc;
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int mss = so->so_tcpcb->t_maxseg;
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DEBUG_CALL("sopreprbuf");
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DEBUG_ARG("so = %lx", (long )so); |
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len = sb->sb_datalen - sb->sb_cc; |
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if (len <= 0) |
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return 0; |
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iov[0].iov_base = sb->sb_wptr;
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iov[1].iov_base = NULL; |
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iov[1].iov_len = 0; |
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if (sb->sb_wptr < sb->sb_rptr) {
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iov[0].iov_len = sb->sb_rptr - sb->sb_wptr;
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/* Should never succeed, but... */
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if (iov[0].iov_len > len) |
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iov[0].iov_len = len;
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if (iov[0].iov_len > mss) |
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iov[0].iov_len -= iov[0].iov_len%mss; |
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n = 1;
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} else {
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iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr;
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/* Should never succeed, but... */
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if (iov[0].iov_len > len) iov[0].iov_len = len; |
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len -= iov[0].iov_len;
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if (len) {
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iov[1].iov_base = sb->sb_data;
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iov[1].iov_len = sb->sb_rptr - sb->sb_data;
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if(iov[1].iov_len > len) |
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iov[1].iov_len = len;
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total = iov[0].iov_len + iov[1].iov_len; |
120 |
if (total > mss) {
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lss = total%mss; |
122 |
if (iov[1].iov_len > lss) { |
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iov[1].iov_len -= lss;
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n = 2;
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} else {
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lss -= iov[1].iov_len;
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iov[0].iov_len -= lss;
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n = 1;
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} |
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} else
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n = 2;
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} else {
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if (iov[0].iov_len > mss) |
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iov[0].iov_len -= iov[0].iov_len%mss; |
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n = 1;
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} |
137 |
} |
138 |
if (np)
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*np = n; |
140 |
|
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return iov[0].iov_len + (n - 1) * iov[1].iov_len; |
142 |
} |
143 |
|
144 |
/*
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* Read from so's socket into sb_snd, updating all relevant sbuf fields
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* NOTE: This will only be called if it is select()ed for reading, so
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* a read() of 0 (or less) means it's disconnected
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*/
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int
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soread(struct socket *so)
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{ |
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int n, nn;
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struct sbuf *sb = &so->so_snd;
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struct iovec iov[2]; |
155 |
|
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DEBUG_CALL("soread");
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DEBUG_ARG("so = %lx", (long )so); |
158 |
|
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/*
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* No need to check if there's enough room to read.
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* soread wouldn't have been called if there weren't
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*/
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sopreprbuf(so, iov, &n); |
164 |
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#ifdef HAVE_READV
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nn = readv(so->s, (struct iovec *)iov, n);
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DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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#else
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nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0); |
170 |
#endif
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if (nn <= 0) { |
172 |
if (nn < 0 && (errno == EINTR || errno == EAGAIN)) |
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return 0; |
174 |
else {
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DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno)));
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sofcantrcvmore(so); |
177 |
tcp_sockclosed(sototcpcb(so)); |
178 |
return -1; |
179 |
} |
180 |
} |
181 |
|
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#ifndef HAVE_READV
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/*
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* If there was no error, try and read the second time round
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* We read again if n = 2 (ie, there's another part of the buffer)
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* and we read as much as we could in the first read
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* We don't test for <= 0 this time, because there legitimately
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* might not be any more data (since the socket is non-blocking),
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* a close will be detected on next iteration.
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* A return of -1 wont (shouldn't) happen, since it didn't happen above
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*/
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if (n == 2 && nn == iov[0].iov_len) { |
193 |
int ret;
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ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0); |
195 |
if (ret > 0) |
196 |
nn += ret; |
197 |
} |
198 |
|
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DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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#endif
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201 |
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/* Update fields */
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sb->sb_cc += nn; |
204 |
sb->sb_wptr += nn; |
205 |
if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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sb->sb_wptr -= sb->sb_datalen; |
207 |
return nn;
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} |
209 |
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int soreadbuf(struct socket *so, const char *buf, int size) |
211 |
{ |
212 |
int n, nn, copy = size;
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struct sbuf *sb = &so->so_snd;
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struct iovec iov[2]; |
215 |
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DEBUG_CALL("soreadbuf");
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DEBUG_ARG("so = %lx", (long )so); |
218 |
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/*
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* No need to check if there's enough room to read.
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* soread wouldn't have been called if there weren't
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*/
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if (sopreprbuf(so, iov, &n) < size)
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goto err;
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nn = MIN(iov[0].iov_len, copy);
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memcpy(iov[0].iov_base, buf, nn);
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copy -= nn; |
230 |
buf += nn; |
231 |
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232 |
if (copy == 0) |
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goto done;
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memcpy(iov[1].iov_base, buf, copy);
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done:
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238 |
/* Update fields */
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sb->sb_cc += size; |
240 |
sb->sb_wptr += size; |
241 |
if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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sb->sb_wptr -= sb->sb_datalen; |
243 |
return size;
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244 |
err:
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245 |
|
246 |
sofcantrcvmore(so); |
247 |
tcp_sockclosed(sototcpcb(so)); |
248 |
fprintf(stderr, "soreadbuf buffer to small");
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return -1; |
250 |
} |
251 |
|
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/*
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* Get urgent data
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*
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* When the socket is created, we set it SO_OOBINLINE,
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* so when OOB data arrives, we soread() it and everything
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* in the send buffer is sent as urgent data
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*/
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void
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sorecvoob(struct socket *so)
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{ |
262 |
struct tcpcb *tp = sototcpcb(so);
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DEBUG_CALL("sorecvoob");
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DEBUG_ARG("so = %lx", (long)so); |
266 |
|
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/*
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* We take a guess at how much urgent data has arrived.
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* In most situations, when urgent data arrives, the next
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* read() should get all the urgent data. This guess will
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* be wrong however if more data arrives just after the
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* urgent data, or the read() doesn't return all the
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* urgent data.
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*/
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soread(so); |
276 |
tp->snd_up = tp->snd_una + so->so_snd.sb_cc; |
277 |
tp->t_force = 1;
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278 |
tcp_output(tp); |
279 |
tp->t_force = 0;
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280 |
} |
281 |
|
282 |
/*
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283 |
* Send urgent data
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284 |
* There's a lot duplicated code here, but...
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285 |
*/
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286 |
int
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287 |
sosendoob(struct socket *so)
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288 |
{ |
289 |
struct sbuf *sb = &so->so_rcv;
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290 |
char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ |
291 |
|
292 |
int n, len;
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293 |
|
294 |
DEBUG_CALL("sosendoob");
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295 |
DEBUG_ARG("so = %lx", (long)so); |
296 |
DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
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297 |
|
298 |
if (so->so_urgc > 2048) |
299 |
so->so_urgc = 2048; /* XXXX */ |
300 |
|
301 |
if (sb->sb_rptr < sb->sb_wptr) {
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302 |
/* We can send it directly */
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303 |
n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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304 |
so->so_urgc -= n; |
305 |
|
306 |
DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
|
307 |
} else {
|
308 |
/*
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309 |
* Since there's no sendv or sendtov like writev,
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310 |
* we must copy all data to a linear buffer then
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311 |
* send it all
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312 |
*/
|
313 |
len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; |
314 |
if (len > so->so_urgc) len = so->so_urgc;
|
315 |
memcpy(buff, sb->sb_rptr, len); |
316 |
so->so_urgc -= len; |
317 |
if (so->so_urgc) {
|
318 |
n = sb->sb_wptr - sb->sb_data; |
319 |
if (n > so->so_urgc) n = so->so_urgc;
|
320 |
memcpy((buff + len), sb->sb_data, n); |
321 |
so->so_urgc -= n; |
322 |
len += n; |
323 |
} |
324 |
n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
|
325 |
#ifdef DEBUG
|
326 |
if (n != len)
|
327 |
DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n"));
|
328 |
#endif
|
329 |
DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
|
330 |
} |
331 |
|
332 |
sb->sb_cc -= n; |
333 |
sb->sb_rptr += n; |
334 |
if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
335 |
sb->sb_rptr -= sb->sb_datalen; |
336 |
|
337 |
return n;
|
338 |
} |
339 |
|
340 |
/*
|
341 |
* Write data from so_rcv to so's socket,
|
342 |
* updating all sbuf field as necessary
|
343 |
*/
|
344 |
int
|
345 |
sowrite(struct socket *so)
|
346 |
{ |
347 |
int n,nn;
|
348 |
struct sbuf *sb = &so->so_rcv;
|
349 |
int len = sb->sb_cc;
|
350 |
struct iovec iov[2]; |
351 |
|
352 |
DEBUG_CALL("sowrite");
|
353 |
DEBUG_ARG("so = %lx", (long)so); |
354 |
|
355 |
if (so->so_urgc) {
|
356 |
sosendoob(so); |
357 |
if (sb->sb_cc == 0) |
358 |
return 0; |
359 |
} |
360 |
|
361 |
/*
|
362 |
* No need to check if there's something to write,
|
363 |
* sowrite wouldn't have been called otherwise
|
364 |
*/
|
365 |
|
366 |
len = sb->sb_cc; |
367 |
|
368 |
iov[0].iov_base = sb->sb_rptr;
|
369 |
iov[1].iov_base = NULL; |
370 |
iov[1].iov_len = 0; |
371 |
if (sb->sb_rptr < sb->sb_wptr) {
|
372 |
iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
|
373 |
/* Should never succeed, but... */
|
374 |
if (iov[0].iov_len > len) iov[0].iov_len = len; |
375 |
n = 1;
|
376 |
} else {
|
377 |
iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
|
378 |
if (iov[0].iov_len > len) iov[0].iov_len = len; |
379 |
len -= iov[0].iov_len;
|
380 |
if (len) {
|
381 |
iov[1].iov_base = sb->sb_data;
|
382 |
iov[1].iov_len = sb->sb_wptr - sb->sb_data;
|
383 |
if (iov[1].iov_len > len) iov[1].iov_len = len; |
384 |
n = 2;
|
385 |
} else
|
386 |
n = 1;
|
387 |
} |
388 |
/* Check if there's urgent data to send, and if so, send it */
|
389 |
|
390 |
#ifdef HAVE_READV
|
391 |
nn = writev(so->s, (const struct iovec *)iov, n); |
392 |
|
393 |
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
394 |
#else
|
395 |
nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0); |
396 |
#endif
|
397 |
/* This should never happen, but people tell me it does *shrug* */
|
398 |
if (nn < 0 && (errno == EAGAIN || errno == EINTR)) |
399 |
return 0; |
400 |
|
401 |
if (nn <= 0) { |
402 |
DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n",
|
403 |
so->so_state, errno)); |
404 |
sofcantsendmore(so); |
405 |
tcp_sockclosed(sototcpcb(so)); |
406 |
return -1; |
407 |
} |
408 |
|
409 |
#ifndef HAVE_READV
|
410 |
if (n == 2 && nn == iov[0].iov_len) { |
411 |
int ret;
|
412 |
ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0); |
413 |
if (ret > 0) |
414 |
nn += ret; |
415 |
} |
416 |
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
417 |
#endif
|
418 |
|
419 |
/* Update sbuf */
|
420 |
sb->sb_cc -= nn; |
421 |
sb->sb_rptr += nn; |
422 |
if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
423 |
sb->sb_rptr -= sb->sb_datalen; |
424 |
|
425 |
/*
|
426 |
* If in DRAIN mode, and there's no more data, set
|
427 |
* it CANTSENDMORE
|
428 |
*/
|
429 |
if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0) |
430 |
sofcantsendmore(so); |
431 |
|
432 |
return nn;
|
433 |
} |
434 |
|
435 |
/*
|
436 |
* recvfrom() a UDP socket
|
437 |
*/
|
438 |
void
|
439 |
sorecvfrom(struct socket *so)
|
440 |
{ |
441 |
struct sockaddr_in addr;
|
442 |
socklen_t addrlen = sizeof(struct sockaddr_in); |
443 |
|
444 |
DEBUG_CALL("sorecvfrom");
|
445 |
DEBUG_ARG("so = %lx", (long)so); |
446 |
|
447 |
if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ |
448 |
char buff[256]; |
449 |
int len;
|
450 |
|
451 |
len = recvfrom(so->s, buff, 256, 0, |
452 |
(struct sockaddr *)&addr, &addrlen);
|
453 |
/* XXX Check if reply is "correct"? */
|
454 |
|
455 |
if(len == -1 || len == 0) { |
456 |
u_char code=ICMP_UNREACH_PORT; |
457 |
|
458 |
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
459 |
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
460 |
|
461 |
DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n",
|
462 |
errno,strerror(errno))); |
463 |
icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
464 |
} else {
|
465 |
icmp_reflect(so->so_m); |
466 |
so->so_m = NULL; /* Don't m_free() it again! */ |
467 |
} |
468 |
/* No need for this socket anymore, udp_detach it */
|
469 |
udp_detach(so); |
470 |
} else { /* A "normal" UDP packet */ |
471 |
struct mbuf *m;
|
472 |
int len;
|
473 |
#ifdef _WIN32
|
474 |
unsigned long n; |
475 |
#else
|
476 |
int n;
|
477 |
#endif
|
478 |
|
479 |
m = m_get(so->slirp); |
480 |
if (!m) {
|
481 |
return;
|
482 |
} |
483 |
m->m_data += IF_MAXLINKHDR; |
484 |
|
485 |
/*
|
486 |
* XXX Shouldn't FIONREAD packets destined for port 53,
|
487 |
* but I don't know the max packet size for DNS lookups
|
488 |
*/
|
489 |
len = M_FREEROOM(m); |
490 |
/* if (so->so_fport != htons(53)) { */
|
491 |
ioctlsocket(so->s, FIONREAD, &n); |
492 |
|
493 |
if (n > len) {
|
494 |
n = (m->m_data - m->m_dat) + m->m_len + n + 1;
|
495 |
m_inc(m, n); |
496 |
len = M_FREEROOM(m); |
497 |
} |
498 |
/* } */
|
499 |
|
500 |
m->m_len = recvfrom(so->s, m->m_data, len, 0,
|
501 |
(struct sockaddr *)&addr, &addrlen);
|
502 |
DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n",
|
503 |
m->m_len, errno,strerror(errno))); |
504 |
if(m->m_len<0) { |
505 |
u_char code=ICMP_UNREACH_PORT; |
506 |
|
507 |
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
508 |
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
509 |
|
510 |
DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code));
|
511 |
icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
512 |
m_free(m); |
513 |
} else {
|
514 |
/*
|
515 |
* Hack: domain name lookup will be used the most for UDP,
|
516 |
* and since they'll only be used once there's no need
|
517 |
* for the 4 minute (or whatever) timeout... So we time them
|
518 |
* out much quicker (10 seconds for now...)
|
519 |
*/
|
520 |
if (so->so_expire) {
|
521 |
if (so->so_fport == htons(53)) |
522 |
so->so_expire = curtime + SO_EXPIREFAST; |
523 |
else
|
524 |
so->so_expire = curtime + SO_EXPIRE; |
525 |
} |
526 |
|
527 |
/*
|
528 |
* If this packet was destined for CTL_ADDR,
|
529 |
* make it look like that's where it came from, done by udp_output
|
530 |
*/
|
531 |
udp_output(so, m, &addr); |
532 |
} /* rx error */
|
533 |
} /* if ping packet */
|
534 |
} |
535 |
|
536 |
/*
|
537 |
* sendto() a socket
|
538 |
*/
|
539 |
int
|
540 |
sosendto(struct socket *so, struct mbuf *m) |
541 |
{ |
542 |
Slirp *slirp = so->slirp; |
543 |
int ret;
|
544 |
struct sockaddr_in addr;
|
545 |
|
546 |
DEBUG_CALL("sosendto");
|
547 |
DEBUG_ARG("so = %lx", (long)so); |
548 |
DEBUG_ARG("m = %lx", (long)m); |
549 |
|
550 |
addr.sin_family = AF_INET; |
551 |
if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
|
552 |
slirp->vnetwork_addr.s_addr) { |
553 |
/* It's an alias */
|
554 |
if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) {
|
555 |
addr.sin_addr = dns_addr; |
556 |
} else {
|
557 |
addr.sin_addr = loopback_addr; |
558 |
} |
559 |
} else
|
560 |
addr.sin_addr = so->so_faddr; |
561 |
addr.sin_port = so->so_fport; |
562 |
|
563 |
DEBUG_MISC((dfd, " sendto()ing, addr.sin_port=%d, addr.sin_addr.s_addr=%.16s\n", ntohs(addr.sin_port), inet_ntoa(addr.sin_addr)));
|
564 |
|
565 |
/* Don't care what port we get */
|
566 |
ret = sendto(so->s, m->m_data, m->m_len, 0,
|
567 |
(struct sockaddr *)&addr, sizeof (struct sockaddr)); |
568 |
if (ret < 0) |
569 |
return -1; |
570 |
|
571 |
/*
|
572 |
* Kill the socket if there's no reply in 4 minutes,
|
573 |
* but only if it's an expirable socket
|
574 |
*/
|
575 |
if (so->so_expire)
|
576 |
so->so_expire = curtime + SO_EXPIRE; |
577 |
so->so_state &= SS_PERSISTENT_MASK; |
578 |
so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
|
579 |
return 0; |
580 |
} |
581 |
|
582 |
/*
|
583 |
* Listen for incoming TCP connections
|
584 |
*/
|
585 |
struct socket *
|
586 |
tcp_listen(Slirp *slirp, u_int32_t haddr, u_int hport, u_int32_t laddr, |
587 |
u_int lport, int flags)
|
588 |
{ |
589 |
struct sockaddr_in addr;
|
590 |
struct socket *so;
|
591 |
int s, opt = 1; |
592 |
socklen_t addrlen = sizeof(addr);
|
593 |
|
594 |
DEBUG_CALL("tcp_listen");
|
595 |
DEBUG_ARG("haddr = %x", haddr);
|
596 |
DEBUG_ARG("hport = %d", hport);
|
597 |
DEBUG_ARG("laddr = %x", laddr);
|
598 |
DEBUG_ARG("lport = %d", lport);
|
599 |
DEBUG_ARG("flags = %x", flags);
|
600 |
|
601 |
so = socreate(slirp); |
602 |
if (!so) {
|
603 |
return NULL; |
604 |
} |
605 |
|
606 |
/* Don't tcp_attach... we don't need so_snd nor so_rcv */
|
607 |
if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { |
608 |
free(so); |
609 |
return NULL; |
610 |
} |
611 |
insque(so, &slirp->tcb); |
612 |
|
613 |
/*
|
614 |
* SS_FACCEPTONCE sockets must time out.
|
615 |
*/
|
616 |
if (flags & SS_FACCEPTONCE)
|
617 |
so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
|
618 |
|
619 |
so->so_state &= SS_PERSISTENT_MASK; |
620 |
so->so_state |= (SS_FACCEPTCONN | flags); |
621 |
so->so_lport = lport; /* Kept in network format */
|
622 |
so->so_laddr.s_addr = laddr; /* Ditto */
|
623 |
|
624 |
addr.sin_family = AF_INET; |
625 |
addr.sin_addr.s_addr = haddr; |
626 |
addr.sin_port = hport; |
627 |
|
628 |
if (((s = socket(AF_INET,SOCK_STREAM,0)) < 0) || |
629 |
(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)) < 0) || |
630 |
(bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) || |
631 |
(listen(s,1) < 0)) { |
632 |
int tmperrno = errno; /* Don't clobber the real reason we failed */ |
633 |
|
634 |
close(s); |
635 |
sofree(so); |
636 |
/* Restore the real errno */
|
637 |
#ifdef _WIN32
|
638 |
WSASetLastError(tmperrno); |
639 |
#else
|
640 |
errno = tmperrno; |
641 |
#endif
|
642 |
return NULL; |
643 |
} |
644 |
setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
645 |
|
646 |
getsockname(s,(struct sockaddr *)&addr,&addrlen);
|
647 |
so->so_fport = addr.sin_port; |
648 |
if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr) |
649 |
so->so_faddr = slirp->vhost_addr; |
650 |
else
|
651 |
so->so_faddr = addr.sin_addr; |
652 |
|
653 |
so->s = s; |
654 |
return so;
|
655 |
} |
656 |
|
657 |
/*
|
658 |
* Various session state calls
|
659 |
* XXX Should be #define's
|
660 |
* The socket state stuff needs work, these often get call 2 or 3
|
661 |
* times each when only 1 was needed
|
662 |
*/
|
663 |
void
|
664 |
soisfconnecting(struct socket *so)
|
665 |
{ |
666 |
so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE| |
667 |
SS_FCANTSENDMORE|SS_FWDRAIN); |
668 |
so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
|
669 |
} |
670 |
|
671 |
void
|
672 |
soisfconnected(struct socket *so)
|
673 |
{ |
674 |
so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF); |
675 |
so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
|
676 |
} |
677 |
|
678 |
static void |
679 |
sofcantrcvmore(struct socket *so)
|
680 |
{ |
681 |
if ((so->so_state & SS_NOFDREF) == 0) { |
682 |
shutdown(so->s,0);
|
683 |
if(global_writefds) {
|
684 |
FD_CLR(so->s,global_writefds); |
685 |
} |
686 |
} |
687 |
so->so_state &= ~(SS_ISFCONNECTING); |
688 |
if (so->so_state & SS_FCANTSENDMORE) {
|
689 |
so->so_state &= SS_PERSISTENT_MASK; |
690 |
so->so_state |= SS_NOFDREF; /* Don't select it */
|
691 |
} else {
|
692 |
so->so_state |= SS_FCANTRCVMORE; |
693 |
} |
694 |
} |
695 |
|
696 |
static void |
697 |
sofcantsendmore(struct socket *so)
|
698 |
{ |
699 |
if ((so->so_state & SS_NOFDREF) == 0) { |
700 |
shutdown(so->s,1); /* send FIN to fhost */ |
701 |
if (global_readfds) {
|
702 |
FD_CLR(so->s,global_readfds); |
703 |
} |
704 |
if (global_xfds) {
|
705 |
FD_CLR(so->s,global_xfds); |
706 |
} |
707 |
} |
708 |
so->so_state &= ~(SS_ISFCONNECTING); |
709 |
if (so->so_state & SS_FCANTRCVMORE) {
|
710 |
so->so_state &= SS_PERSISTENT_MASK; |
711 |
so->so_state |= SS_NOFDREF; /* as above */
|
712 |
} else {
|
713 |
so->so_state |= SS_FCANTSENDMORE; |
714 |
} |
715 |
} |
716 |
|
717 |
/*
|
718 |
* Set write drain mode
|
719 |
* Set CANTSENDMORE once all data has been write()n
|
720 |
*/
|
721 |
void
|
722 |
sofwdrain(struct socket *so)
|
723 |
{ |
724 |
if (so->so_rcv.sb_cc)
|
725 |
so->so_state |= SS_FWDRAIN; |
726 |
else
|
727 |
sofcantsendmore(so); |
728 |
} |