* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
/*
* Changes and additions relating to SLiRP
* 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.
*/
-#define WANT_SYS_IOCTL_H
#include <slirp.h>
/* patchable/settable parameters for tcp */
-int tcp_mssdflt = TCP_MSS;
-int tcp_rttdflt = TCPTV_SRTTDFLT / PR_SLOWHZ;
-int tcp_do_rfc1323 = 0; /* Don't do rfc1323 performance enhancements */
-int tcp_rcvspace; /* You may want to change this */
-int tcp_sndspace; /* Keep small if you have an error prone link */
+/* Don't do rfc1323 performance enhancements */
+#define TCP_DO_RFC1323 0
/*
* Tcp initialization
*/
void
-tcp_init()
+tcp_init(void)
{
tcp_iss = 1; /* wrong */
tcb.so_next = tcb.so_prev = &tcb;
-
- /* tcp_rcvspace = our Window we advertise to the remote */
- tcp_rcvspace = TCP_RCVSPACE;
- tcp_sndspace = TCP_SNDSPACE;
-
- /* Make sure tcp_sndspace is at least 2*MSS */
- if (tcp_sndspace < 2*(min(if_mtu, if_mru) - sizeof(struct tcpiphdr)))
- tcp_sndspace = 2*(min(if_mtu, if_mru) - sizeof(struct tcpiphdr));
}
/*
*/
/* struct tcpiphdr * */
void
-tcp_template(tp)
- struct tcpcb *tp;
+tcp_template(struct tcpcb *tp)
{
struct socket *so = tp->t_socket;
register struct tcpiphdr *n = &tp->t_template;
- n->ti_next = n->ti_prev = 0;
+ n->ti_mbuf = NULL;
n->ti_x1 = 0;
n->ti_pr = IPPROTO_TCP;
n->ti_len = htons(sizeof (struct tcpiphdr) - sizeof (struct ip));
n->ti_dst = so->so_laddr;
n->ti_sport = so->so_fport;
n->ti_dport = so->so_lport;
-
+
n->ti_seq = 0;
n->ti_ack = 0;
n->ti_x2 = 0;
* segment are as specified by the parameters.
*/
void
-tcp_respond(tp, ti, m, ack, seq, flags)
- struct tcpcb *tp;
- register struct tcpiphdr *ti;
- register struct mbuf *m;
- tcp_seq ack, seq;
- int flags;
+tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
+ tcp_seq ack, tcp_seq seq, int flags)
{
register int tlen;
int win = 0;
DEBUG_ARG("ack = %u", ack);
DEBUG_ARG("seq = %u", seq);
DEBUG_ARG("flags = %x", flags);
-
+
if (tp)
win = sbspace(&tp->t_socket->so_rcv);
- if (m == 0) {
+ if (m == NULL) {
if ((m = m_get()) == NULL)
return;
#ifdef TCP_COMPAT_42
#else
tlen = 0;
#endif
- m->m_data += if_maxlinkhdr;
+ m->m_data += IF_MAXLINKHDR;
*mtod(m, struct tcpiphdr *) = *ti;
ti = mtod(m, struct tcpiphdr *);
flags = TH_ACK;
} else {
- /*
+ /*
* ti points into m so the next line is just making
* the mbuf point to ti
*/
m->m_data = (caddr_t)ti;
-
+
m->m_len = sizeof (struct tcpiphdr);
tlen = 0;
#define xchg(a,b,type) { type t; t=a; a=b; b=t; }
tlen += sizeof (struct tcpiphdr);
m->m_len = tlen;
- ti->ti_next = ti->ti_prev = 0;
+ ti->ti_mbuf = NULL;
ti->ti_x1 = 0;
ti->ti_seq = htonl(seq);
ti->ti_ack = htonl(ack);
ti->ti_sum = cksum(m, tlen);
((struct ip *)ti)->ip_len = tlen;
- if(flags & TH_RST)
+ if(flags & TH_RST)
((struct ip *)ti)->ip_ttl = MAXTTL;
- else
- ((struct ip *)ti)->ip_ttl = ip_defttl;
-
+ else
+ ((struct ip *)ti)->ip_ttl = IPDEFTTL;
+
(void) ip_output((struct socket *)0, m);
}
* protocol control block.
*/
struct tcpcb *
-tcp_newtcpcb(so)
- struct socket *so;
+tcp_newtcpcb(struct socket *so)
{
register struct tcpcb *tp;
-
+
tp = (struct tcpcb *)malloc(sizeof(*tp));
if (tp == NULL)
return ((struct tcpcb *)0);
-
+
memset((char *) tp, 0, sizeof(struct tcpcb));
- tp->seg_next = tp->seg_prev = (tcpiphdrp_32)tp;
- tp->t_maxseg = tcp_mssdflt;
-
- tp->t_flags = tcp_do_rfc1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0;
+ tp->seg_next = tp->seg_prev = (struct tcpiphdr*)tp;
+ tp->t_maxseg = TCP_MSS;
+
+ tp->t_flags = TCP_DO_RFC1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0;
tp->t_socket = so;
-
+
/*
* Init srtt to TCPTV_SRTTBASE (0), so we can tell that we have no
* rtt estimate. Set rttvar so that srtt + 2 * rttvar gives
* reasonable initial retransmit time.
*/
tp->t_srtt = TCPTV_SRTTBASE;
- tp->t_rttvar = tcp_rttdflt * PR_SLOWHZ << 2;
+ tp->t_rttvar = TCPTV_SRTTDFLT << 2;
tp->t_rttmin = TCPTV_MIN;
- TCPT_RANGESET(tp->t_rxtcur,
+ TCPT_RANGESET(tp->t_rxtcur,
((TCPTV_SRTTBASE >> 2) + (TCPTV_SRTTDFLT << 2)) >> 1,
TCPTV_MIN, TCPTV_REXMTMAX);
tp->snd_cwnd = TCP_MAXWIN << TCP_MAX_WINSHIFT;
tp->snd_ssthresh = TCP_MAXWIN << TCP_MAX_WINSHIFT;
tp->t_state = TCPS_CLOSED;
-
+
so->so_tcpcb = tp;
return (tp);
* the specified error. If connection is synchronized,
* then send a RST to peer.
*/
-struct tcpcb *tcp_drop(struct tcpcb *tp, int errno)
+struct tcpcb *tcp_drop(struct tcpcb *tp, int err)
{
/* tcp_drop(tp, errno)
register struct tcpcb *tp;
DEBUG_CALL("tcp_drop");
DEBUG_ARG("tp = %lx", (long)tp);
DEBUG_ARG("errno = %d", errno);
-
+
if (TCPS_HAVERCVDSYN(tp->t_state)) {
tp->t_state = TCPS_CLOSED;
(void) tcp_output(tp);
- tcpstat.tcps_drops++;
+ STAT(tcpstat.tcps_drops++);
} else
- tcpstat.tcps_conndrops++;
+ STAT(tcpstat.tcps_conndrops++);
/* if (errno == ETIMEDOUT && tp->t_softerror)
* errno = tp->t_softerror;
*/
* wake up any sleepers
*/
struct tcpcb *
-tcp_close(tp)
- register struct tcpcb *tp;
+tcp_close(struct tcpcb *tp)
{
register struct tcpiphdr *t;
struct socket *so = tp->t_socket;
DEBUG_CALL("tcp_close");
DEBUG_ARG("tp = %lx", (long )tp);
-
+
/* free the reassembly queue, if any */
- t = (struct tcpiphdr *) tp->seg_next;
- while (t != (struct tcpiphdr *)tp) {
- t = (struct tcpiphdr *)t->ti_next;
- m = (struct mbuf *) REASS_MBUF((struct tcpiphdr *)t->ti_prev);
- remque_32((struct tcpiphdr *) t->ti_prev);
+ t = tcpfrag_list_first(tp);
+ while (!tcpfrag_list_end(t, tp)) {
+ t = tcpiphdr_next(t);
+ m = tcpiphdr_prev(t)->ti_mbuf;
+ remque(tcpiphdr2qlink(tcpiphdr_prev(t)));
m_freem(m);
}
/* It's static */
*/
/* free(tp, M_PCB); */
free(tp);
- so->so_tcpcb = 0;
+ so->so_tcpcb = NULL;
soisfdisconnected(so);
/* clobber input socket cache if we're closing the cached connection */
if (so == tcp_last_so)
tcp_last_so = &tcb;
- close(so->s);
+ closesocket(so->s);
sbfree(&so->so_rcv);
sbfree(&so->so_snd);
sofree(so);
- tcpstat.tcps_closed++;
+ STAT(tcpstat.tcps_closed++);
return ((struct tcpcb *)0);
}
+#ifdef notdef
void
tcp_drain()
{
* When a source quench is received, close congestion window
* to one segment. We will gradually open it again as we proceed.
*/
-
-#ifdef notdef
-
void
tcp_quench(i, errno)
* We can let the user exit from the close as soon as the FIN is acked.
*/
void
-tcp_sockclosed(tp)
- struct tcpcb *tp;
+tcp_sockclosed(struct tcpcb *tp)
{
DEBUG_CALL("tcp_sockclosed");
DEBUG_ARG("tp = %lx", (long)tp);
-
+
switch (tp->t_state) {
case TCPS_CLOSED:
tcp_output(tp);
}
-/*
+/*
* Connect to a host on the Internet
* Called by tcp_input
* Only do a connect, the tcp fields will be set in tcp_input
* return 0 if there's a result of the connect,
* else return -1 means we're still connecting
* The return value is almost always -1 since the socket is
- * nonblocking. Connect returns after the SYN is sent, and does
+ * nonblocking. Connect returns after the SYN is sent, and does
* not wait for ACK+SYN.
*/
-int tcp_fconnect(so)
- struct socket *so;
+int tcp_fconnect(struct socket *so)
{
int ret=0;
-
+
DEBUG_CALL("tcp_fconnect");
DEBUG_ARG("so = %lx", (long )so);
setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(opt ));
opt = 1;
setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(opt ));
-
+
addr.sin_family = AF_INET;
if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) {
/* It's an alias */
} else
addr.sin_addr = so->so_faddr;
addr.sin_port = so->so_fport;
-
+
DEBUG_MISC((dfd, " connect()ing, addr.sin_port=%d, "
- "addr.sin_addr.s_addr=%.16s\n",
+ "addr.sin_addr.s_addr=%.16s\n",
ntohs(addr.sin_port), inet_ntoa(addr.sin_addr)));
/* We don't care what port we get */
ret = connect(s,(struct sockaddr *)&addr,sizeof (addr));
-
+
/*
* If it's not in progress, it failed, so we just return 0,
* without clearing SS_NOFDREF
/*
* Accept the socket and connect to the local-host
- *
+ *
* We have a problem. The correct thing to do would be
* to first connect to the local-host, and only if the
* connection is accepted, then do an accept() here.
- * But, a) we need to know who's trying to connect
+ * But, a) we need to know who's trying to connect
* to the socket to be able to SYN the local-host, and
* b) we are already connected to the foreign host by
* the time it gets to accept(), so... We simply accept
* here and SYN the local-host.
- */
+ */
void
-tcp_connect(inso)
- struct socket *inso;
+tcp_connect(struct socket *inso)
{
struct socket *so;
struct sockaddr_in addr;
- int addrlen = sizeof(struct sockaddr_in);
+ socklen_t addrlen = sizeof(struct sockaddr_in);
struct tcpcb *tp;
int s, opt;
DEBUG_CALL("tcp_connect");
DEBUG_ARG("inso = %lx", (long)inso);
-
+
/*
* If it's an SS_ACCEPTONCE socket, no need to socreate()
* another socket, just use the accept() socket.
} else {
if ((so = socreate()) == NULL) {
/* If it failed, get rid of the pending connection */
- close(accept(inso->s,(struct sockaddr *)&addr,&addrlen));
+ closesocket(accept(inso->s,(struct sockaddr *)&addr,&addrlen));
return;
}
if (tcp_attach(so) < 0) {
so->so_laddr = inso->so_laddr;
so->so_lport = inso->so_lport;
}
-
+
(void) tcp_mss(sototcpcb(so), 0);
if ((s = accept(inso->s,(struct sockaddr *)&addr,&addrlen)) < 0) {
setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
opt = 1;
setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int));
-
+ opt = 1;
+ setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)&opt,sizeof(int));
+
so->so_fport = addr.sin_port;
so->so_faddr = addr.sin_addr;
/* Translate connections from localhost to the real hostname */
if (so->so_faddr.s_addr == 0 || so->so_faddr.s_addr == loopback_addr.s_addr)
- so->so_faddr = our_addr;
-
+ so->so_faddr = alias_addr;
+
/* Close the accept() socket, set right state */
if (inso->so_state & SS_FACCEPTONCE) {
- close(so->s); /* If we only accept once, close the accept() socket */
+ closesocket(so->s); /* If we only accept once, close the accept() socket */
so->so_state = SS_NOFDREF; /* Don't select it yet, even though we have an FD */
/* if it's not FACCEPTONCE, it's already NOFDREF */
}
so->s = s;
-
+
so->so_iptos = tcp_tos(so);
tp = sototcpcb(so);
tcp_template(tp);
-
+
/* Compute window scaling to request. */
/* while (tp->request_r_scale < TCP_MAX_WINSHIFT &&
* (TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat)
*/
/* soisconnecting(so); */ /* NOFDREF used instead */
- tcpstat.tcps_connattempt++;
-
+ STAT(tcpstat.tcps_connattempt++);
+
tp->t_state = TCPS_SYN_SENT;
tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
- tp->iss = tcp_iss;
+ tp->iss = tcp_iss;
tcp_iss += TCP_ISSINCR/2;
tcp_sendseqinit(tp);
tcp_output(tp);
* Attach a TCPCB to a socket.
*/
int
-tcp_attach(so)
- struct socket *so;
+tcp_attach(struct socket *so)
{
if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL)
return -1;
-
+
insque(so, &tcb);
return 0;
/*
* Set the socket's type of service field
*/
-struct tos_t tcptos[] = {
+static const struct tos_t tcptos[] = {
{0, 20, IPTOS_THROUGHPUT, 0}, /* ftp data */
{21, 21, IPTOS_LOWDELAY, EMU_FTP}, /* ftp control */
{0, 23, IPTOS_LOWDELAY, 0}, /* telnet */
{0, 0, 0, 0}
};
-struct emu_t *tcpemu = 0;
-
+#ifdef CONFIG_QEMU
+static
+#endif
+struct emu_t *tcpemu = NULL;
+
/*
* Return TOS according to the above table
*/
u_int8_t
-tcp_tos(so)
- struct socket *so;
+tcp_tos(struct socket *so)
{
int i = 0;
struct emu_t *emup;
-
+
while(tcptos[i].tos) {
if ((tcptos[i].fport && (ntohs(so->so_fport) == tcptos[i].fport)) ||
(tcptos[i].lport && (ntohs(so->so_lport) == tcptos[i].lport))) {
}
i++;
}
-
+
/* Nope, lets see if there's a user-added one */
for (emup = tcpemu; emup; emup = emup->next) {
if ((emup->fport && (ntohs(so->so_fport) == emup->fport)) ||
return emup->tos;
}
}
-
+
return 0;
}
+#if 0
int do_echo = -1;
+#endif
/*
* Emulate programs that try and connect to us
* This includes ftp (the data connection is
* initiated by the server) and IRC (DCC CHAT and
* DCC SEND) for now
- *
+ *
* NOTE: It's possible to crash SLiRP by sending it
* unstandard strings to emulate... if this is a problem,
* more checks are needed here
*
* XXX Assumes the whole command came in one packet
- *
+ *
* XXX Some ftp clients will have their TOS set to
* LOWDELAY and so Nagel will kick in. Because of this,
* we'll get the first letter, followed by the rest, so
* we simply scan for ORT instead of PORT...
* DCC doesn't have this problem because there's other stuff
* in the packet before the DCC command.
- *
- * Return 1 if the mbuf m is still valid and should be
+ *
+ * Return 1 if the mbuf m is still valid and should be
* sbappend()ed
- *
+ *
* NOTE: if you return 0 you MUST m_free() the mbuf!
*/
int
-tcp_emu(so, m)
- struct socket *so;
- struct mbuf *m;
+tcp_emu(struct socket *so, struct mbuf *m)
{
u_int n1, n2, n3, n4, n5, n6;
- char buff[256];
+ char buff[257];
u_int32_t laddr;
u_int lport;
char *bptr;
-
+
DEBUG_CALL("tcp_emu");
DEBUG_ARG("so = %lx", (long)so);
DEBUG_ARG("m = %lx", (long)m);
-
+
switch(so->so_emu) {
int x, i;
-
+
case EMU_IDENT:
/*
* Identification protocol as per rfc-1413
*/
-
+
{
struct socket *tmpso;
struct sockaddr_in addr;
- int addrlen = sizeof(struct sockaddr_in);
+ socklen_t addrlen = sizeof(struct sockaddr_in);
struct sbuf *so_rcv = &so->so_rcv;
-
+
memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
so_rcv->sb_wptr += m->m_len;
so_rcv->sb_rptr += m->m_len;
m->m_data[m->m_len] = 0; /* NULL terminate */
if (strchr(m->m_data, '\r') || strchr(m->m_data, '\n')) {
- if (sscanf(so_rcv->sb_data, "%d%*[ ,]%d", &n1, &n2) == 2) {
+ if (sscanf(so_rcv->sb_data, "%u%*[ ,]%u", &n1, &n2) == 2) {
HTONS(n1);
HTONS(n2);
/* n2 is the one on our host */
}
}
}
- so_rcv->sb_cc = sprintf(so_rcv->sb_data, "%d,%d\r\n", n1, n2);
+ so_rcv->sb_cc = snprintf(so_rcv->sb_data,
+ so_rcv->sb_datalen,
+ "%d,%d\r\n", n1, n2);
so_rcv->sb_rptr = so_rcv->sb_data;
so_rcv->sb_wptr = so_rcv->sb_data + so_rcv->sb_cc;
}
m_free(m);
return 0;
}
-
+
#if 0
case EMU_RLOGIN:
/*
char term[100];
struct sbuf *so_snd = &so->so_snd;
struct sbuf *so_rcv = &so->so_rcv;
-
+
/* First check if they have a priveladged port, or too much data has arrived */
if (ntohs(so->so_lport) > 1023 || ntohs(so->so_lport) < 512 ||
(m->m_len + so_rcv->sb_wptr) > (so_rcv->sb_data + so_rcv->sb_datalen)) {
m_free(m);
return 0;
}
-
+
/* Append the current data */
memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
so_rcv->sb_wptr += m->m_len;
so_rcv->sb_rptr += m->m_len;
m_free(m);
-
+
/*
* Check if we have all the initial options,
* and build argument list to rlogin while we're here
}
}
}
-
+
if (n != 4)
return 0;
-
+
/* We have it, set our term variable and fork_exec() */
#ifdef HAVE_SETENV
setenv("TERM", term, 1);
fork_exec(so, args, 2);
term[0] = 0;
so->so_emu = 0;
-
+
/* And finally, send the client a 0 character */
so_snd->sb_wptr[0] = 0;
so_snd->sb_wptr++;
so_snd->sb_cc++;
-
+
return 0;
}
-
+
case EMU_RSH:
/*
* rsh emulation
char *args;
struct sbuf *so_snd = &so->so_snd;
struct sbuf *so_rcv = &so->so_rcv;
-
+
/* First check if they have a priveladged port, or too much data has arrived */
if (ntohs(so->so_lport) > 1023 || ntohs(so->so_lport) < 512 ||
(m->m_len + so_rcv->sb_wptr) > (so_rcv->sb_data + so_rcv->sb_datalen)) {
m_free(m);
return 0;
}
-
+
/* Append the current data */
memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
so_rcv->sb_wptr += m->m_len;
so_rcv->sb_rptr += m->m_len;
m_free(m);
-
+
/*
* Check if we have all the initial options,
* and build argument list to rlogin while we're here
ns->so_faddr=so->so_faddr;
ns->so_fport=htons(IPPORT_RESERVED-1); /* Use a fake port. */
- if (ns->so_faddr.s_addr == 0 ||
+ if (ns->so_faddr.s_addr == 0 ||
ns->so_faddr.s_addr == loopback_addr.s_addr)
- ns->so_faddr = our_addr;
+ ns->so_faddr = alias_addr;
ns->so_iptos = tcp_tos(ns);
tp = sototcpcb(ns);
-
+
tcp_template(tp);
-
+
/* Compute window scaling to request. */
/* while (tp->request_r_scale < TCP_MAX_WINSHIFT &&
* (TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat)
/*soisfconnecting(ns);*/
- tcpstat.tcps_connattempt++;
-
+ STAT(tcpstat.tcps_connattempt++);
+
tp->t_state = TCPS_SYN_SENT;
tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
- tp->iss = tcp_iss;
+ tp->iss = tcp_iss;
tcp_iss += TCP_ISSINCR/2;
tcp_sendseqinit(tp);
tcp_output(tp);
}
}
}
-
+
if (n != 4)
return 0;
-
+
rsh_exec(so,so->extra, user, inet_ntoa(so->so_faddr), args);
so->so_emu = 0;
so->extra=NULL;
-
+
/* And finally, send the client a 0 character */
so_snd->sb_wptr[0] = 0;
so_snd->sb_wptr++;
so_snd->sb_cc++;
-
+
return 0;
}
int num;
struct sbuf *so_snd = &so->so_snd;
struct sbuf *so_rcv = &so->so_rcv;
-
+
/*
* If there is binary data here, we save it in so->so_m
*/
}
}
} /* if(so->so_m==NULL) */
-
+
/*
* Append the line
*/
sbappendsb(so_rcv, m);
-
+
/* To avoid going over the edge of the buffer, we reset it */
if (so_snd->sb_cc == 0)
so_snd->sb_wptr = so_snd->sb_rptr = so_snd->sb_data;
-
+
/*
* A bit of a hack:
* If the first packet we get here is 1 byte long, then it
tcp_output(sototcpcb(so)); /* XXX */
} else
m_free(m);
-
+
num = 0;
while (num < so->so_rcv.sb_cc) {
if (*(so->so_rcv.sb_rptr + num) == '\n' ||
*(so->so_rcv.sb_rptr + num) == '\r') {
int n;
-
+
*(so_rcv->sb_rptr + num) = 0;
if (ctl_password && !ctl_password_ok) {
/* Need a password */
}
return 0;
}
-#endif
+#endif
case EMU_FTP: /* ftp */
- *(m->m_data+m->m_len) = 0; /* NULL terminate for strstr */
+ *(m->m_data+m->m_len) = 0; /* NUL terminate for strstr */
if ((bptr = (char *)strstr(m->m_data, "ORT")) != NULL) {
/*
* Need to emulate the PORT command
- */
- x = sscanf(bptr, "ORT %d,%d,%d,%d,%d,%d\r\n%256[^\177]",
+ */
+ x = sscanf(bptr, "ORT %u,%u,%u,%u,%u,%u\r\n%256[^\177]",
&n1, &n2, &n3, &n4, &n5, &n6, buff);
if (x < 6)
return 1;
-
+
laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4));
lport = htons((n5 << 8) | (n6));
-
+
if ((so = solisten(0, laddr, lport, SS_FACCEPTONCE)) == NULL)
return 1;
-
+
n6 = ntohs(so->so_fport);
-
+
n5 = (n6 >> 8) & 0xff;
n6 &= 0xff;
-
+
laddr = ntohl(so->so_faddr.s_addr);
-
+
n1 = ((laddr >> 24) & 0xff);
n2 = ((laddr >> 16) & 0xff);
n3 = ((laddr >> 8) & 0xff);
n4 = (laddr & 0xff);
-
+
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += sprintf(bptr,"ORT %d,%d,%d,%d,%d,%d\r\n%s",
- n1, n2, n3, n4, n5, n6, x==7?buff:"");
+ m->m_len += snprintf(bptr, m->m_hdr.mh_size - m->m_len,
+ "ORT %d,%d,%d,%d,%d,%d\r\n%s",
+ n1, n2, n3, n4, n5, n6, x==7?buff:"");
return 1;
} else if ((bptr = (char *)strstr(m->m_data, "27 Entering")) != NULL) {
/*
* Need to emulate the PASV response
*/
- x = sscanf(bptr, "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%256[^\177]",
+ x = sscanf(bptr, "27 Entering Passive Mode (%u,%u,%u,%u,%u,%u)\r\n%256[^\177]",
&n1, &n2, &n3, &n4, &n5, &n6, buff);
if (x < 6)
return 1;
-
+
laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4));
lport = htons((n5 << 8) | (n6));
-
+
if ((so = solisten(0, laddr, lport, SS_FACCEPTONCE)) == NULL)
return 1;
-
+
n6 = ntohs(so->so_fport);
-
+
n5 = (n6 >> 8) & 0xff;
n6 &= 0xff;
-
+
laddr = ntohl(so->so_faddr.s_addr);
-
+
n1 = ((laddr >> 24) & 0xff);
n2 = ((laddr >> 16) & 0xff);
n3 = ((laddr >> 8) & 0xff);
n4 = (laddr & 0xff);
-
+
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += sprintf(bptr,"27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
- n1, n2, n3, n4, n5, n6, x==7?buff:"");
-
+ m->m_len += snprintf(bptr, m->m_hdr.mh_size - m->m_len,
+ "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
+ n1, n2, n3, n4, n5, n6, x==7?buff:"");
+
return 1;
}
-
+
return 1;
-
+
case EMU_KSH:
/*
* The kshell (Kerberos rsh) and shell services both pass
}
if (m->m_data[m->m_len-1] == '\0' && lport != 0 &&
(so = solisten(0, so->so_laddr.s_addr, htons(lport), SS_FACCEPTONCE)) != NULL)
- m->m_len = sprintf(m->m_data, "%d", ntohs(so->so_fport))+1;
+ m->m_len = snprintf(m->m_data, m->m_hdr.mh_size, "%d",
+ ntohs(so->so_fport)) + 1;
return 1;
-
+
case EMU_IRC:
/*
* Need to emulate DCC CHAT, DCC SEND and DCC MOVE
*(m->m_data+m->m_len) = 0; /* NULL terminate the string for strstr */
if ((bptr = (char *)strstr(m->m_data, "DCC")) == NULL)
return 1;
-
+
/* The %256s is for the broken mIRC */
if (sscanf(bptr, "DCC CHAT %256s %u %u", buff, &laddr, &lport) == 3) {
if ((so = solisten(0, htonl(laddr), htons(lport), SS_FACCEPTONCE)) == NULL)
return 1;
-
+
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += sprintf(bptr, "DCC CHAT chat %lu %u%c\n",
- (unsigned long)ntohl(so->so_faddr.s_addr),
- ntohs(so->so_fport), 1);
+ m->m_len += snprintf(bptr, m->m_hdr.mh_size,
+ "DCC CHAT chat %lu %u%c\n",
+ (unsigned long)ntohl(so->so_faddr.s_addr),
+ ntohs(so->so_fport), 1);
} else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) {
if ((so = solisten(0, htonl(laddr), htons(lport), SS_FACCEPTONCE)) == NULL)
return 1;
-
+
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += sprintf(bptr, "DCC SEND %s %lu %u %u%c\n",
- buff, (unsigned long)ntohl(so->so_faddr.s_addr),
- ntohs(so->so_fport), n1, 1);
+ m->m_len += snprintf(bptr, m->m_hdr.mh_size,
+ "DCC SEND %s %lu %u %u%c\n", buff,
+ (unsigned long)ntohl(so->so_faddr.s_addr),
+ ntohs(so->so_fport), n1, 1);
} else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) {
if ((so = solisten(0, htonl(laddr), htons(lport), SS_FACCEPTONCE)) == NULL)
return 1;
-
+
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += sprintf(bptr, "DCC MOVE %s %lu %u %u%c\n",
- buff, (unsigned long)ntohl(so->so_faddr.s_addr),
- ntohs(so->so_fport), n1, 1);
+ m->m_len += snprintf(bptr, m->m_hdr.mh_size,
+ "DCC MOVE %s %lu %u %u%c\n", buff,
+ (unsigned long)ntohl(so->so_faddr.s_addr),
+ ntohs(so->so_fport), n1, 1);
}
return 1;
case EMU_REALAUDIO:
- /*
+ /*
* RealAudio emulation - JP. We must try to parse the incoming
* data and try to find the two characters that contain the
* port number. Then we redirect an udp port and replace the
*
* The 1.0 beta versions of the player are not supported
* any more.
- *
+ *
* A typical packet for player version 1.0 (release version):
- *
- * 0000:50 4E 41 00 05
+ *
+ * 0000:50 4E 41 00 05
* 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 .....×..gælÜc..P
* 0010:4E 43 4C 49 45 4E 54 20 31 30 31 20 41 4C 50 48 NCLIENT 101 ALPH
* 0020:41 6C 00 00 52 00 17 72 61 66 69 6C 65 73 2F 76 Al..R..rafiles/v
* 0030:6F 61 2F 65 6E 67 6C 69 73 68 5F 2E 72 61 79 42 oa/english_.rayB
- *
+ *
* Now the port number 0x1BD7 is found at offset 0x04 of the
* Now the port number 0x1BD7 is found at offset 0x04 of the
* second packet. This time we received five bytes first and
* then the rest. You never know how many bytes you get.
*
* A typical packet for player version 2.0 (beta):
- *
+ *
* 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA...........Á.
* 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .guxõc..Win2.0.0
* 0020:2E 35 6C 00 00 52 00 1C 72 61 66 69 6C 65 73 2F .5l..R..rafiles/
* 0030:77 65 62 73 69 74 65 2F 32 30 72 65 6C 65 61 73 website/20releas
* 0040:65 2E 72 61 79 53 00 00 06 36 42 e.rayS...6B
- *
+ *
* Port number 0x1BC1 is found at offset 0x0d.
- *
+ *
* This is just a horrible switch statement. Variable ra tells
* us where we're going.
*/
-
+
bptr = m->m_data;
while (bptr < m->m_data + m->m_len) {
u_short p;
static int ra = 0;
- char ra_tbl[4];
-
+ char ra_tbl[4];
+
ra_tbl[0] = 0x50;
ra_tbl[1] = 0x4e;
ra_tbl[2] = 0x41;
ra_tbl[3] = 0;
-
+
switch (ra) {
case 0:
case 2:
continue;
}
break;
-
+
case 1:
/*
* We may get 0x50 several times, ignore them
continue;
}
break;
-
- case 4:
- /*
+
+ case 4:
+ /*
* skip version number
*/
bptr++;
break;
-
- case 5:
+
+ case 5:
/*
* The difference between versions 1.0 and
* 2.0 is here. For future versions of
bptr += 8;
else
bptr += 4;
- break;
-
+ break;
+
case 6:
/* This is the field containing the port
* number that RA-player is listening to.
*/
- lport = (((u_char*)bptr)[0] << 8)
+ lport = (((u_char*)bptr)[0] << 8)
+ ((u_char *)bptr)[1];
- if (lport < 6970)
+ if (lport < 6970)
lport += 256; /* don't know why */
if (lport < 6970 || lport > 7170)
return 1; /* failed */
-
+
/* try to get udp port between 6970 - 7170 */
for (p = 6970; p < 7071; p++) {
if (udp_listen( htons(p),
p = 0;
*(u_char *)bptr++ = (p >> 8) & 0xff;
*(u_char *)bptr++ = p & 0xff;
- ra = 0;
+ ra = 0;
return 1; /* port redirected, we're done */
- break;
-
+ break;
+
default:
- ra = 0;
+ ra = 0;
}
ra++;
}
- return 1;
-
+ return 1;
+
default:
/* Ooops, not emulated, won't call tcp_emu again */
so->so_emu = 0;
* return 2 if this is a command-line connection
*/
int
-tcp_ctl(so)
- struct socket *so;
+tcp_ctl(struct socket *so)
{
-#if 0
struct sbuf *sb = &so->so_snd;
int command;
struct ex_list *ex_ptr;
int do_pty;
- struct socket *tmpso;
-
+ // struct socket *tmpso;
+
DEBUG_CALL("tcp_ctl");
DEBUG_ARG("so = %lx", (long )so);
-
+
+#if 0
/*
* Check if they're authorised
*/
sb->sb_wptr += sb->sb_cc;
return 0;
}
-
+#endif
command = (ntohl(so->so_faddr.s_addr) & 0xff);
-
+
switch(command) {
default: /* Check for exec's */
-
+
/*
* Check if it's pty_exec
*/
for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
if (ex_ptr->ex_fport == so->so_fport &&
command == ex_ptr->ex_addr) {
+ if (ex_ptr->ex_pty == 3) {
+ so->s = -1;
+ so->extra = (void *)ex_ptr->ex_exec;
+ return 1;
+ }
do_pty = ex_ptr->ex_pty;
goto do_exec;
}
}
-
+
/*
* Nothing bound..
*/
/* tcp_fconnect(so); */
-
+
/* FALLTHROUGH */
case CTL_ALIAS:
- sb->sb_cc = sprintf(sb->sb_wptr,
- "Error: No application configured.\r\n");
+ sb->sb_cc = snprintf(sb->sb_wptr, sb->sb_datalen - (sb->sb_wptr - sb->sb_data),
+ "Error: No application configured.\r\n");
sb->sb_wptr += sb->sb_cc;
return(0);
do_exec:
DEBUG_MISC((dfd, " executing %s \n",ex_ptr->ex_exec));
return(fork_exec(so, ex_ptr->ex_exec, do_pty));
-
+
+#if 0
case CTL_CMD:
for (tmpso = tcb.so_next; tmpso != &tcb; tmpso = tmpso->so_next) {
- if (tmpso->so_emu == EMU_CTL &&
- !(tmpso->so_tcpcb?
+ if (tmpso->so_emu == EMU_CTL &&
+ !(tmpso->so_tcpcb?
(tmpso->so_tcpcb->t_state & (TCPS_TIME_WAIT|TCPS_LAST_ACK))
:0)) {
/* Ooops, control connection already active */
sb->sb_wptr += sb->sb_cc;
do_echo=-1;
return(2);
- }
-#else
- return 0;
#endif
+ }
}
projects / qemu / blobdiff