diff options
Diffstat (limited to 'slirp/socket.c')
| -rw-r--r-- | slirp/socket.c | 144 |
1 files changed, 72 insertions, 72 deletions
diff --git a/slirp/socket.c b/slirp/socket.c index 0ae1f87011..141bcb262a 100644 --- a/slirp/socket.c +++ b/slirp/socket.c @@ -1,7 +1,7 @@ /* * Copyright (c) 1995 Danny Gasparovski. - * - * Please read the file COPYRIGHT for the + * + * Please read the file COPYRIGHT for the * terms and conditions of the copyright. */ @@ -29,19 +29,19 @@ solookup(head, laddr, lport, faddr, fport) u_int fport; { struct socket *so; - + for (so = head->so_next; so != head; so = so->so_next) { - if (so->so_lport == lport && + if (so->so_lport == lport && so->so_laddr.s_addr == laddr.s_addr && so->so_faddr.s_addr == faddr.s_addr && so->so_fport == fport) break; } - + if (so == head) return (struct socket *)NULL; return so; - + } /* @@ -53,7 +53,7 @@ struct socket * socreate() { struct socket *so; - + so = (struct socket *)malloc(sizeof(struct socket)); if(so) { memset(so, 0, sizeof(struct socket)); @@ -78,10 +78,10 @@ sofree(so) tcp_last_so = &tcb; else if (so == udp_last_so) udp_last_so = &udb; - + m_free(so->so_m); - - if(so->so_next && so->so_prev) + + if(so->so_next && so->so_prev) remque(so); /* crashes if so is not in a queue */ free(so); @@ -101,17 +101,17 @@ soread(so) int len = sb->sb_datalen - sb->sb_cc; struct iovec iov[2]; int mss = so->so_tcpcb->t_maxseg; - + DEBUG_CALL("soread"); DEBUG_ARG("so = %lx", (long )so); - - /* + + /* * No need to check if there's enough room to read. * soread wouldn't have been called if there weren't */ - + len = sb->sb_datalen - sb->sb_cc; - + iov[0].iov_base = sb->sb_wptr; if (sb->sb_wptr < sb->sb_rptr) { iov[0].iov_len = sb->sb_rptr - sb->sb_wptr; @@ -150,13 +150,13 @@ soread(so) n = 1; } } - + #ifdef HAVE_READV nn = readv(so->s, (struct iovec *)iov, n); DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn)); #else nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0); -#endif +#endif if (nn <= 0) { if (nn < 0 && (errno == EINTR || errno == EAGAIN)) return 0; @@ -167,7 +167,7 @@ soread(so) return -1; } } - + #ifndef HAVE_READV /* * If there was no error, try and read the second time round @@ -184,10 +184,10 @@ soread(so) if (ret > 0) nn += ret; } - + DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn)); #endif - + /* Update fields */ sb->sb_cc += nn; sb->sb_wptr += nn; @@ -195,10 +195,10 @@ soread(so) sb->sb_wptr -= sb->sb_datalen; return nn; } - + /* * 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 @@ -211,13 +211,13 @@ sorecvoob(so) DEBUG_CALL("sorecvoob"); DEBUG_ARG("so = %lx", (long)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, or the read() doesn't return all the * urgent data. */ soread(so); @@ -237,24 +237,24 @@ sosendoob(so) { struct sbuf *sb = &so->so_rcv; char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ - + int n, len; - + DEBUG_CALL("sosendoob"); DEBUG_ARG("so = %lx", (long)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 = send(so->s, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */ so->so_urgc -= n; - + DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc)); } else { - /* + /* * Since there's no sendv or sendtov like writev, * we must copy all data to a linear buffer then * send it all @@ -274,20 +274,20 @@ sosendoob(so) #ifdef DEBUG if (n != len) DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n")); -#endif +#endif DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", 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, + * Write data from so_rcv to so's socket, * updating all sbuf field as necessary */ int @@ -298,10 +298,10 @@ sowrite(so) struct sbuf *sb = &so->so_rcv; int len = sb->sb_cc; struct iovec iov[2]; - + DEBUG_CALL("sowrite"); DEBUG_ARG("so = %lx", (long)so); - + if (so->so_urgc) { sosendoob(so); if (sb->sb_cc == 0) @@ -312,9 +312,9 @@ sowrite(so) * No need to check if there's something to write, * sowrite wouldn't have been called otherwise */ - + len = sb->sb_cc; - + iov[0].iov_base = sb->sb_rptr; if (sb->sb_rptr < sb->sb_wptr) { iov[0].iov_len = sb->sb_wptr - sb->sb_rptr; @@ -337,7 +337,7 @@ sowrite(so) #ifdef HAVE_READV nn = writev(so->s, (const struct iovec *)iov, n); - + DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn)); #else nn = send(so->s, iov[0].iov_base, iov[0].iov_len,0); @@ -345,7 +345,7 @@ sowrite(so) /* This should never happen, but people tell me it does *shrug* */ if (nn < 0 && (errno == EAGAIN || errno == EINTR)) return 0; - + if (nn <= 0) { DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n", so->so_state, errno)); @@ -353,7 +353,7 @@ sowrite(so) tcp_sockclosed(sototcpcb(so)); return -1; } - + #ifndef HAVE_READV if (n == 2 && nn == iov[0].iov_len) { int ret; @@ -363,20 +363,20 @@ sowrite(so) } DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn)); #endif - + /* 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; } @@ -389,24 +389,24 @@ sorecvfrom(so) { struct sockaddr_in addr; int addrlen = sizeof(struct sockaddr_in); - + DEBUG_CALL("sorecvfrom"); DEBUG_ARG("so = %lx", (long)so); - + if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ char buff[256]; int len; - - len = recvfrom(so->s, buff, 256, 0, + + len = recvfrom(so->s, buff, 256, 0, (struct sockaddr *)&addr, &addrlen); /* XXX Check if reply is "correct"? */ - + if(len == -1 || len == 0) { u_char code=ICMP_UNREACH_PORT; if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; - + DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n", errno,strerror(errno))); icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno)); @@ -422,32 +422,32 @@ sorecvfrom(so) if (!(m = m_get())) return; m->m_data += if_maxlinkhdr; - - /* + + /* * 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)) { */ ioctlsocket(so->s, FIONREAD, &n); - + 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((dfd, " did recvfrom %d, errno = %d-%s\n", + DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n", m->m_len, errno,strerror(errno))); if(m->m_len<0) { u_char code=ICMP_UNREACH_PORT; if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; - + DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code)); icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno)); m_free(m); @@ -470,8 +470,8 @@ sorecvfrom(so) * m->m_len = 0; * } */ - - /* + + /* * If this packet was destined for CTL_ADDR, * make it look like that's where it came from, done by udp_output */ @@ -494,7 +494,7 @@ sosendto(so, m) DEBUG_CALL("sosendto"); DEBUG_ARG("so = %lx", (long)so); DEBUG_ARG("m = %lx", (long)m); - + addr.sin_family = AF_INET; if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) { /* It's an alias */ @@ -512,13 +512,13 @@ sosendto(so, m) addr.sin_port = so->so_fport; 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))); - + /* Don't care what port we get */ ret = sendto(so->s, m->m_data, m->m_len, 0, (struct sockaddr *)&addr, sizeof (struct sockaddr)); if (ret < 0) return -1; - + /* * Kill the socket if there's no reply in 4 minutes, * but only if it's an expirable socket @@ -548,39 +548,39 @@ solisten(port, laddr, lport, flags) DEBUG_ARG("laddr = %x", laddr); DEBUG_ARG("lport = %d", lport); DEBUG_ARG("flags = %x", flags); - + if ((so = socreate()) == NULL) { /* free(so); Not sofree() ??? free(NULL) == NOP */ return NULL; } - + /* Don't tcp_attach... we don't need so_snd nor so_rcv */ if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { free(so); return NULL; } insque(so,&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_FACCEPTCONN|flags); 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 = INADDR_ANY; addr.sin_port = port; - + if (((s = socket(AF_INET,SOCK_STREAM,0)) < 0) || (setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)) < 0) || (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) || (listen(s,1) < 0)) { int tmperrno = errno; /* Don't clobber the real reason we failed */ - + close(s); sofree(so); /* Restore the real errno */ @@ -592,7 +592,7 @@ solisten(port, laddr, lport, flags) return NULL; } setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); - + getsockname(s,(struct sockaddr *)&addr,&addrlen); so->so_fport = addr.sin_port; if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr) @@ -604,7 +604,7 @@ solisten(port, laddr, lport, flags) return so; } -/* +/* * Data is available in so_rcv * Just write() the data to the socket * XXX not yet... @@ -616,7 +616,7 @@ sorwakeup(so) /* sowrite(so); */ /* FD_CLR(so->s,&writefds); */ } - + /* * Data has been freed in so_snd * We have room for a read() if we want to |