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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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#define WANT_SYS_IOCTL_H
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#include <slirp.h> |
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#include "ip_icmp.h" |
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#include "main.h" |
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#ifdef __sun__
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#include <sys/filio.h> |
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#endif
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static void sofcantrcvmore(struct socket *so); |
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static void sofcantsendmore(struct socket *so); |
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#if 0
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static void
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so_init()
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{
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/* Nothing yet */
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}
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#endif
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struct socket *
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solookup(head, laddr, lport, faddr, fport) |
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struct socket *head;
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struct in_addr laddr;
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u_int lport; |
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struct in_addr faddr;
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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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* 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() |
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{ |
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struct socket *so;
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so = (struct socket *)malloc(sizeof(struct socket)); |
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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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} |
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return(so);
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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(so) |
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struct socket *so;
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{ |
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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 == tcp_last_so)
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tcp_last_so = &tcb; |
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else if (so == udp_last_so) |
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udp_last_so = &udb; |
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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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free(so); |
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} |
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/*
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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(so) |
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struct socket *so;
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{ |
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int n, nn, 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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struct iovec iov[2]; |
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int mss = so->so_tcpcb->t_maxseg;
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DEBUG_CALL("soread");
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DEBUG_ARG("so = %lx", (long )so); |
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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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len = sb->sb_datalen - sb->sb_cc; |
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iov[0].iov_base = sb->sb_wptr;
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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; |
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if (total > mss) {
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lss = total%mss; |
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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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} |
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} |
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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); |
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#endif
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if (nn <= 0) { |
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if (nn < 0 && (errno == EINTR || errno == EAGAIN)) |
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return 0; |
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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); |
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tcp_sockclosed(sototcpcb(so)); |
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return -1; |
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} |
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} |
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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) { |
186 |
int ret;
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ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0); |
188 |
if (ret > 0) |
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nn += ret; |
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} |
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DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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#endif
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/* Update fields */
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sb->sb_cc += nn; |
197 |
sb->sb_wptr += nn; |
198 |
if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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sb->sb_wptr -= sb->sb_datalen; |
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return nn;
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} |
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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(so) |
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struct socket *so;
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{ |
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struct tcpcb *tp = sototcpcb(so);
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DEBUG_CALL("sorecvoob");
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DEBUG_ARG("so = %lx", (long)so); |
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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); |
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tp->snd_up = tp->snd_una + so->so_snd.sb_cc; |
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tp->t_force = 1;
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tcp_output(tp); |
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tp->t_force = 0;
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} |
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/*
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* Send urgent data
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* There's a lot duplicated code here, but...
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*/
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int
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sosendoob(so) |
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struct socket *so;
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{ |
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struct sbuf *sb = &so->so_rcv;
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char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ |
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int n, len;
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DEBUG_CALL("sosendoob");
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DEBUG_ARG("so = %lx", (long)so); |
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DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
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if (so->so_urgc > 2048) |
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so->so_urgc = 2048; /* XXXX */ |
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if (sb->sb_rptr < sb->sb_wptr) {
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/* We can send it directly */
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n = send(so->s, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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so->so_urgc -= n; |
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DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
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} else {
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/*
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* Since there's no sendv or sendtov like writev,
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* we must copy all data to a linear buffer then
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* send it all
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*/
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len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; |
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if (len > so->so_urgc) len = so->so_urgc;
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memcpy(buff, sb->sb_rptr, len); |
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so->so_urgc -= len; |
270 |
if (so->so_urgc) {
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n = sb->sb_wptr - sb->sb_data; |
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if (n > so->so_urgc) n = so->so_urgc;
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memcpy((buff + len), sb->sb_data, n); |
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so->so_urgc -= n; |
275 |
len += n; |
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} |
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n = send(so->s, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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#ifdef DEBUG
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if (n != len)
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DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n"));
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#endif
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DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
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} |
284 |
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sb->sb_cc -= n; |
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sb->sb_rptr += n; |
287 |
if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
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sb->sb_rptr -= sb->sb_datalen; |
289 |
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return n;
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} |
292 |
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/*
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* Write data from so_rcv to so's socket,
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* updating all sbuf field as necessary
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*/
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int
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sowrite(so) |
299 |
struct socket *so;
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{ |
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int n,nn;
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struct sbuf *sb = &so->so_rcv;
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int len = sb->sb_cc;
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struct iovec iov[2]; |
305 |
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DEBUG_CALL("sowrite");
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DEBUG_ARG("so = %lx", (long)so); |
308 |
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if (so->so_urgc) {
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sosendoob(so); |
311 |
if (sb->sb_cc == 0) |
312 |
return 0; |
313 |
} |
314 |
|
315 |
/*
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* No need to check if there's something to write,
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* sowrite wouldn't have been called otherwise
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*/
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len = sb->sb_cc; |
321 |
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iov[0].iov_base = sb->sb_rptr;
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323 |
if (sb->sb_rptr < sb->sb_wptr) {
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324 |
iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
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/* Should never succeed, but... */
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326 |
if (iov[0].iov_len > len) iov[0].iov_len = len; |
327 |
n = 1;
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328 |
} else {
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329 |
iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
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330 |
if (iov[0].iov_len > len) iov[0].iov_len = len; |
331 |
len -= iov[0].iov_len;
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332 |
if (len) {
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333 |
iov[1].iov_base = sb->sb_data;
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334 |
iov[1].iov_len = sb->sb_wptr - sb->sb_data;
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335 |
if (iov[1].iov_len > len) iov[1].iov_len = len; |
336 |
n = 2;
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337 |
} else
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338 |
n = 1;
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339 |
} |
340 |
/* Check if there's urgent data to send, and if so, send it */
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341 |
|
342 |
#ifdef HAVE_READV
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343 |
nn = writev(so->s, (const struct iovec *)iov, n); |
344 |
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345 |
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
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346 |
#else
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347 |
nn = send(so->s, iov[0].iov_base, iov[0].iov_len,0); |
348 |
#endif
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349 |
/* This should never happen, but people tell me it does *shrug* */
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350 |
if (nn < 0 && (errno == EAGAIN || errno == EINTR)) |
351 |
return 0; |
352 |
|
353 |
if (nn <= 0) { |
354 |
DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n",
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355 |
so->so_state, errno)); |
356 |
sofcantsendmore(so); |
357 |
tcp_sockclosed(sototcpcb(so)); |
358 |
return -1; |
359 |
} |
360 |
|
361 |
#ifndef HAVE_READV
|
362 |
if (n == 2 && nn == iov[0].iov_len) { |
363 |
int ret;
|
364 |
ret = send(so->s, iov[1].iov_base, iov[1].iov_len,0); |
365 |
if (ret > 0) |
366 |
nn += ret; |
367 |
} |
368 |
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
369 |
#endif
|
370 |
|
371 |
/* Update sbuf */
|
372 |
sb->sb_cc -= nn; |
373 |
sb->sb_rptr += nn; |
374 |
if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
375 |
sb->sb_rptr -= sb->sb_datalen; |
376 |
|
377 |
/*
|
378 |
* If in DRAIN mode, and there's no more data, set
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379 |
* it CANTSENDMORE
|
380 |
*/
|
381 |
if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0) |
382 |
sofcantsendmore(so); |
383 |
|
384 |
return nn;
|
385 |
} |
386 |
|
387 |
/*
|
388 |
* recvfrom() a UDP socket
|
389 |
*/
|
390 |
void
|
391 |
sorecvfrom(so) |
392 |
struct socket *so;
|
393 |
{ |
394 |
struct sockaddr_in addr;
|
395 |
int addrlen = sizeof(struct sockaddr_in); |
396 |
|
397 |
DEBUG_CALL("sorecvfrom");
|
398 |
DEBUG_ARG("so = %lx", (long)so); |
399 |
|
400 |
if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ |
401 |
char buff[256]; |
402 |
int len;
|
403 |
|
404 |
len = recvfrom(so->s, buff, 256, 0, |
405 |
(struct sockaddr *)&addr, &addrlen);
|
406 |
/* XXX Check if reply is "correct"? */
|
407 |
|
408 |
if(len == -1 || len == 0) { |
409 |
u_char code=ICMP_UNREACH_PORT; |
410 |
|
411 |
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
412 |
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
413 |
|
414 |
DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n",
|
415 |
errno,strerror(errno))); |
416 |
icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
417 |
} else {
|
418 |
icmp_reflect(so->so_m); |
419 |
so->so_m = 0; /* Don't m_free() it again! */ |
420 |
} |
421 |
/* No need for this socket anymore, udp_detach it */
|
422 |
udp_detach(so); |
423 |
} else { /* A "normal" UDP packet */ |
424 |
struct mbuf *m;
|
425 |
int len, n;
|
426 |
|
427 |
if (!(m = m_get())) return; |
428 |
m->m_data += IF_MAXLINKHDR; |
429 |
|
430 |
/*
|
431 |
* XXX Shouldn't FIONREAD packets destined for port 53,
|
432 |
* but I don't know the max packet size for DNS lookups
|
433 |
*/
|
434 |
len = M_FREEROOM(m); |
435 |
/* if (so->so_fport != htons(53)) { */
|
436 |
ioctlsocket(so->s, FIONREAD, &n); |
437 |
|
438 |
if (n > len) {
|
439 |
n = (m->m_data - m->m_dat) + m->m_len + n + 1;
|
440 |
m_inc(m, n); |
441 |
len = M_FREEROOM(m); |
442 |
} |
443 |
/* } */
|
444 |
|
445 |
m->m_len = recvfrom(so->s, m->m_data, len, 0,
|
446 |
(struct sockaddr *)&addr, &addrlen);
|
447 |
DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n",
|
448 |
m->m_len, errno,strerror(errno))); |
449 |
if(m->m_len<0) { |
450 |
u_char code=ICMP_UNREACH_PORT; |
451 |
|
452 |
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
453 |
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
454 |
|
455 |
DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code));
|
456 |
icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
457 |
m_free(m); |
458 |
} else {
|
459 |
/*
|
460 |
* Hack: domain name lookup will be used the most for UDP,
|
461 |
* and since they'll only be used once there's no need
|
462 |
* for the 4 minute (or whatever) timeout... So we time them
|
463 |
* out much quicker (10 seconds for now...)
|
464 |
*/
|
465 |
if (so->so_expire) {
|
466 |
if (so->so_fport == htons(53)) |
467 |
so->so_expire = curtime + SO_EXPIREFAST; |
468 |
else
|
469 |
so->so_expire = curtime + SO_EXPIRE; |
470 |
} |
471 |
|
472 |
/* if (m->m_len == len) {
|
473 |
* m_inc(m, MINCSIZE);
|
474 |
* m->m_len = 0;
|
475 |
* }
|
476 |
*/
|
477 |
|
478 |
/*
|
479 |
* If this packet was destined for CTL_ADDR,
|
480 |
* make it look like that's where it came from, done by udp_output
|
481 |
*/
|
482 |
udp_output(so, m, &addr); |
483 |
} /* rx error */
|
484 |
} /* if ping packet */
|
485 |
} |
486 |
|
487 |
/*
|
488 |
* sendto() a socket
|
489 |
*/
|
490 |
int
|
491 |
sosendto(so, m) |
492 |
struct socket *so;
|
493 |
struct mbuf *m;
|
494 |
{ |
495 |
int ret;
|
496 |
struct sockaddr_in addr;
|
497 |
|
498 |
DEBUG_CALL("sosendto");
|
499 |
DEBUG_ARG("so = %lx", (long)so); |
500 |
DEBUG_ARG("m = %lx", (long)m); |
501 |
|
502 |
addr.sin_family = AF_INET; |
503 |
if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) { |
504 |
/* It's an alias */
|
505 |
switch(ntohl(so->so_faddr.s_addr) & 0xff) { |
506 |
case CTL_DNS:
|
507 |
addr.sin_addr = dns_addr; |
508 |
break;
|
509 |
case CTL_ALIAS:
|
510 |
default:
|
511 |
addr.sin_addr = loopback_addr; |
512 |
break;
|
513 |
} |
514 |
} else
|
515 |
addr.sin_addr = so->so_faddr; |
516 |
addr.sin_port = so->so_fport; |
517 |
|
518 |
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)));
|
519 |
|
520 |
/* Don't care what port we get */
|
521 |
ret = sendto(so->s, m->m_data, m->m_len, 0,
|
522 |
(struct sockaddr *)&addr, sizeof (struct sockaddr)); |
523 |
if (ret < 0) |
524 |
return -1; |
525 |
|
526 |
/*
|
527 |
* Kill the socket if there's no reply in 4 minutes,
|
528 |
* but only if it's an expirable socket
|
529 |
*/
|
530 |
if (so->so_expire)
|
531 |
so->so_expire = curtime + SO_EXPIRE; |
532 |
so->so_state = SS_ISFCONNECTED; /* So that it gets select()ed */
|
533 |
return 0; |
534 |
} |
535 |
|
536 |
/*
|
537 |
* XXX This should really be tcp_listen
|
538 |
*/
|
539 |
struct socket *
|
540 |
solisten(port, laddr, lport, flags) |
541 |
u_int port; |
542 |
u_int32_t laddr; |
543 |
u_int lport; |
544 |
int flags;
|
545 |
{ |
546 |
struct sockaddr_in addr;
|
547 |
struct socket *so;
|
548 |
int s, addrlen = sizeof(addr), opt = 1; |
549 |
|
550 |
DEBUG_CALL("solisten");
|
551 |
DEBUG_ARG("port = %d", port);
|
552 |
DEBUG_ARG("laddr = %x", laddr);
|
553 |
DEBUG_ARG("lport = %d", lport);
|
554 |
DEBUG_ARG("flags = %x", flags);
|
555 |
|
556 |
if ((so = socreate()) == NULL) { |
557 |
/* free(so); Not sofree() ??? free(NULL) == NOP */
|
558 |
return NULL; |
559 |
} |
560 |
|
561 |
/* Don't tcp_attach... we don't need so_snd nor so_rcv */
|
562 |
if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { |
563 |
free(so); |
564 |
return NULL; |
565 |
} |
566 |
insque(so,&tcb); |
567 |
|
568 |
/*
|
569 |
* SS_FACCEPTONCE sockets must time out.
|
570 |
*/
|
571 |
if (flags & SS_FACCEPTONCE)
|
572 |
so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
|
573 |
|
574 |
so->so_state = (SS_FACCEPTCONN|flags); |
575 |
so->so_lport = lport; /* Kept in network format */
|
576 |
so->so_laddr.s_addr = laddr; /* Ditto */
|
577 |
|
578 |
addr.sin_family = AF_INET; |
579 |
addr.sin_addr.s_addr = INADDR_ANY; |
580 |
addr.sin_port = port; |
581 |
|
582 |
if (((s = socket(AF_INET,SOCK_STREAM,0)) < 0) || |
583 |
(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)) < 0) || |
584 |
(bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) || |
585 |
(listen(s,1) < 0)) { |
586 |
int tmperrno = errno; /* Don't clobber the real reason we failed */ |
587 |
|
588 |
close(s); |
589 |
sofree(so); |
590 |
/* Restore the real errno */
|
591 |
#ifdef _WIN32
|
592 |
WSASetLastError(tmperrno); |
593 |
#else
|
594 |
errno = tmperrno; |
595 |
#endif
|
596 |
return NULL; |
597 |
} |
598 |
setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
599 |
|
600 |
getsockname(s,(struct sockaddr *)&addr,&addrlen);
|
601 |
so->so_fport = addr.sin_port; |
602 |
if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr) |
603 |
so->so_faddr = alias_addr; |
604 |
else
|
605 |
so->so_faddr = addr.sin_addr; |
606 |
|
607 |
so->s = s; |
608 |
return so;
|
609 |
} |
610 |
|
611 |
#if 0
|
612 |
/*
|
613 |
* Data is available in so_rcv
|
614 |
* Just write() the data to the socket
|
615 |
* XXX not yet...
|
616 |
*/
|
617 |
static void
|
618 |
sorwakeup(so)
|
619 |
struct socket *so;
|
620 |
{
|
621 |
/* sowrite(so); */
|
622 |
/* FD_CLR(so->s,&writefds); */
|
623 |
}
|
624 |
|
625 |
/*
|
626 |
* Data has been freed in so_snd
|
627 |
* We have room for a read() if we want to
|
628 |
* For now, don't read, it'll be done in the main loop
|
629 |
*/
|
630 |
static void
|
631 |
sowwakeup(so)
|
632 |
struct socket *so;
|
633 |
{
|
634 |
/* Nothing, yet */
|
635 |
}
|
636 |
#endif
|
637 |
|
638 |
/*
|
639 |
* Various session state calls
|
640 |
* XXX Should be #define's
|
641 |
* The socket state stuff needs work, these often get call 2 or 3
|
642 |
* times each when only 1 was needed
|
643 |
*/
|
644 |
void
|
645 |
soisfconnecting(so) |
646 |
register struct socket *so; |
647 |
{ |
648 |
so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE| |
649 |
SS_FCANTSENDMORE|SS_FWDRAIN); |
650 |
so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
|
651 |
} |
652 |
|
653 |
void
|
654 |
soisfconnected(so) |
655 |
register struct socket *so; |
656 |
{ |
657 |
so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF); |
658 |
so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
|
659 |
} |
660 |
|
661 |
static void |
662 |
sofcantrcvmore(struct socket *so)
|
663 |
{ |
664 |
if ((so->so_state & SS_NOFDREF) == 0) { |
665 |
shutdown(so->s,0);
|
666 |
if(global_writefds) {
|
667 |
FD_CLR(so->s,global_writefds); |
668 |
} |
669 |
} |
670 |
so->so_state &= ~(SS_ISFCONNECTING); |
671 |
if (so->so_state & SS_FCANTSENDMORE)
|
672 |
so->so_state = SS_NOFDREF; /* Don't select it */ /* XXX close() here as well? */ |
673 |
else
|
674 |
so->so_state |= SS_FCANTRCVMORE; |
675 |
} |
676 |
|
677 |
static void |
678 |
sofcantsendmore(struct socket *so)
|
679 |
{ |
680 |
if ((so->so_state & SS_NOFDREF) == 0) { |
681 |
shutdown(so->s,1); /* send FIN to fhost */ |
682 |
if (global_readfds) {
|
683 |
FD_CLR(so->s,global_readfds); |
684 |
} |
685 |
if (global_xfds) {
|
686 |
FD_CLR(so->s,global_xfds); |
687 |
} |
688 |
} |
689 |
so->so_state &= ~(SS_ISFCONNECTING); |
690 |
if (so->so_state & SS_FCANTRCVMORE)
|
691 |
so->so_state = SS_NOFDREF; /* as above */
|
692 |
else
|
693 |
so->so_state |= SS_FCANTSENDMORE; |
694 |
} |
695 |
|
696 |
void
|
697 |
soisfdisconnected(so) |
698 |
struct socket *so;
|
699 |
{ |
700 |
/* so->so_state &= ~(SS_ISFCONNECTING|SS_ISFCONNECTED); */
|
701 |
/* close(so->s); */
|
702 |
/* so->so_state = SS_ISFDISCONNECTED; */
|
703 |
/*
|
704 |
* XXX Do nothing ... ?
|
705 |
*/
|
706 |
} |
707 |
|
708 |
/*
|
709 |
* Set write drain mode
|
710 |
* Set CANTSENDMORE once all data has been write()n
|
711 |
*/
|
712 |
void
|
713 |
sofwdrain(so) |
714 |
struct socket *so;
|
715 |
{ |
716 |
if (so->so_rcv.sb_cc)
|
717 |
so->so_state |= SS_FWDRAIN; |
718 |
else
|
719 |
sofcantsendmore(so); |
720 |
} |
721 |
|