[qemu.git] / slirp / misc.c

/*
 * Copyright (c) 1995 Danny Gasparovski.
 *
 * Please read the file COPYRIGHT for the
 * terms and conditions of the copyright.
 */

#include <slirp.h>
#include <libslirp.h>

#include "monitor.h"

#ifdef DEBUG
int slirp_debug = DBG_CALL|DBG_MISC|DBG_ERROR;
#endif

struct quehead {
	struct quehead *qh_link;
	struct quehead *qh_rlink;
};

inline void
insque(void *a, void *b)
{
	register struct quehead *element = (struct quehead *) a;
	register struct quehead *head = (struct quehead *) b;
	element->qh_link = head->qh_link;
	head->qh_link = (struct quehead *)element;
	element->qh_rlink = (struct quehead *)head;
	((struct quehead *)(element->qh_link))->qh_rlink
	= (struct quehead *)element;
}

inline void
remque(void *a)
{
  register struct quehead *element = (struct quehead *) a;
  ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
  ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
  element->qh_rlink = NULL;
}

int add_exec(struct ex_list **ex_ptr, int do_pty, char *exec,
             struct in_addr addr, int port)
{
	struct ex_list *tmp_ptr;

	/* First, check if the port is "bound" */
	for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
		if (port == tmp_ptr->ex_fport &&
		    addr.s_addr == tmp_ptr->ex_addr.s_addr)
			return -1;
	}

	tmp_ptr = *ex_ptr;
	*ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list));
	(*ex_ptr)->ex_fport = port;
	(*ex_ptr)->ex_addr = addr;
	(*ex_ptr)->ex_pty = do_pty;
	(*ex_ptr)->ex_exec = (do_pty == 3) ? exec : strdup(exec);
	(*ex_ptr)->ex_next = tmp_ptr;
	return 0;
}

#ifndef HAVE_STRERROR

/*
 * For systems with no strerror
 */

extern int sys_nerr;
extern char *sys_errlist[];

char *
strerror(error)
	int error;
{
	if (error < sys_nerr)
	   return sys_errlist[error];
	else
	   return "Unknown error.";
}

#endif


#ifdef _WIN32

int
fork_exec(struct socket *so, const char *ex, int do_pty)
{
    /* not implemented */
    return 0;
}

#else

/*
 * XXX This is ugly
 * We create and bind a socket, then fork off to another
 * process, which connects to this socket, after which we
 * exec the wanted program.  If something (strange) happens,
 * the accept() call could block us forever.
 *
 * do_pty = 0   Fork/exec inetd style
 * do_pty = 1   Fork/exec using slirp.telnetd
 * do_ptr = 2   Fork/exec using pty
 */
int
fork_exec(struct socket *so, const char *ex, int do_pty)
{
	int s;
	struct sockaddr_in addr;
	socklen_t addrlen = sizeof(addr);
	int opt;
        int master = -1;
	const char *argv[256];
	/* don't want to clobber the original */
	char *bptr;
	const char *curarg;
	int c, i, ret;
	pid_t pid;

	DEBUG_CALL("fork_exec");
	DEBUG_ARG("so = %lx", (long)so);
	DEBUG_ARG("ex = %lx", (long)ex);
	DEBUG_ARG("do_pty = %lx", (long)do_pty);

	if (do_pty == 2) {
                return 0;
	} else {
		addr.sin_family = AF_INET;
		addr.sin_port = 0;
		addr.sin_addr.s_addr = INADDR_ANY;

		if ((s = qemu_socket(AF_INET, SOCK_STREAM, 0)) < 0 ||
		    bind(s, (struct sockaddr *)&addr, addrlen) < 0 ||
		    listen(s, 1) < 0) {
			lprint("Error: inet socket: %s\n", strerror(errno));
			closesocket(s);

			return 0;
		}
	}

	pid = fork();
	switch(pid) {
	 case -1:
		lprint("Error: fork failed: %s\n", strerror(errno));
		close(s);
		if (do_pty == 2)
		   close(master);
		return 0;

	 case 0:
                setsid();

		/* Set the DISPLAY */
		if (do_pty == 2) {
			(void) close(master);
#ifdef TIOCSCTTY /* XXXXX */
			ioctl(s, TIOCSCTTY, (char *)NULL);
#endif
		} else {
			getsockname(s, (struct sockaddr *)&addr, &addrlen);
			close(s);
			/*
			 * Connect to the socket
			 * XXX If any of these fail, we're in trouble!
	 		 */
			s = qemu_socket(AF_INET, SOCK_STREAM, 0);
			addr.sin_addr = loopback_addr;
                        do {
                            ret = connect(s, (struct sockaddr *)&addr, addrlen);
                        } while (ret < 0 && errno == EINTR);
		}

		dup2(s, 0);
		dup2(s, 1);
		dup2(s, 2);
		for (s = getdtablesize() - 1; s >= 3; s--)
		   close(s);

		i = 0;
		bptr = g_strdup(ex); /* No need to free() this */
		if (do_pty == 1) {
			/* Setup "slirp.telnetd -x" */
			argv[i++] = "slirp.telnetd";
			argv[i++] = "-x";
			argv[i++] = bptr;
		} else
		   do {
			/* Change the string into argv[] */
			curarg = bptr;
			while (*bptr != ' ' && *bptr != (char)0)
			   bptr++;
			c = *bptr;
			*bptr++ = (char)0;
			argv[i++] = strdup(curarg);
		   } while (c);

                argv[i] = NULL;
		execvp(argv[0], (char **)argv);

		/* Ooops, failed, let's tell the user why */
        fprintf(stderr, "Error: execvp of %s failed: %s\n",
                argv[0], strerror(errno));
		close(0); close(1); close(2); /* XXX */
		exit(1);

	 default:
		qemu_add_child_watch(pid);
		if (do_pty == 2) {
			close(s);
			so->s = master;
		} else {
			/*
			 * XXX this could block us...
			 * XXX Should set a timer here, and if accept() doesn't
		 	 * return after X seconds, declare it a failure
		 	 * The only reason this will block forever is if socket()
		 	 * of connect() fail in the child process
		 	 */
                        do {
                            so->s = accept(s, (struct sockaddr *)&addr, &addrlen);
                        } while (so->s < 0 && errno == EINTR);
                        closesocket(s);
			opt = 1;
			setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
			opt = 1;
			setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int));
		}
		fd_nonblock(so->s);

		/* Append the telnet options now */
                if (so->so_m != NULL && do_pty == 1)  {
			sbappend(so, so->so_m);
                        so->so_m = NULL;
		}

		return 1;
	}
}
#endif

#ifndef HAVE_STRDUP
char *
strdup(str)
	const char *str;
{
	char *bptr;

	bptr = (char *)malloc(strlen(str)+1);
	strcpy(bptr, str);

	return bptr;
}
#endif

#include "monitor.h"

void lprint(const char *format, ...)
{
    va_list args;

    va_start(args, format);
    monitor_vprintf(default_mon, format, args);
    va_end(args);
}

void
u_sleep(int usec)
{
	struct timeval t;
	fd_set fdset;

	FD_ZERO(&fdset);

	t.tv_sec = 0;
	t.tv_usec = usec * 1000;

	select(0, &fdset, &fdset, &fdset, &t);
}

/*
 * Set fd blocking and non-blocking
 */

void
fd_nonblock(int fd)
{
#ifdef FIONBIO
#ifdef _WIN32
        unsigned long opt = 1;
#else
        int opt = 1;
#endif

	ioctlsocket(fd, FIONBIO, &opt);
#else
	int opt;

	opt = fcntl(fd, F_GETFL, 0);
	opt |= O_NONBLOCK;
	fcntl(fd, F_SETFL, opt);
#endif
}

void
fd_block(int fd)
{
#ifdef FIONBIO
#ifdef _WIN32
        unsigned long opt = 0;
#else
	int opt = 0;
#endif

	ioctlsocket(fd, FIONBIO, &opt);
#else
	int opt;

	opt = fcntl(fd, F_GETFL, 0);
	opt &= ~O_NONBLOCK;
	fcntl(fd, F_SETFL, opt);
#endif
}

void slirp_connection_info(Slirp *slirp, Monitor *mon)
{
    const char * const tcpstates[] = {
        [TCPS_CLOSED]       = "CLOSED",
        [TCPS_LISTEN]       = "LISTEN",
        [TCPS_SYN_SENT]     = "SYN_SENT",
        [TCPS_SYN_RECEIVED] = "SYN_RCVD",
        [TCPS_ESTABLISHED]  = "ESTABLISHED",
        [TCPS_CLOSE_WAIT]   = "CLOSE_WAIT",
        [TCPS_FIN_WAIT_1]   = "FIN_WAIT_1",
        [TCPS_CLOSING]      = "CLOSING",
        [TCPS_LAST_ACK]     = "LAST_ACK",
        [TCPS_FIN_WAIT_2]   = "FIN_WAIT_2",
        [TCPS_TIME_WAIT]    = "TIME_WAIT",
    };
    struct in_addr dst_addr;
    struct sockaddr_in src;
    socklen_t src_len;
    uint16_t dst_port;
    struct socket *so;
    const char *state;
    char buf[20];
    int n;

    monitor_printf(mon, "  Protocol[State]    FD  Source Address  Port   "
                        "Dest. Address  Port RecvQ SendQ\n");

    for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
        if (so->so_state & SS_HOSTFWD) {
            state = "HOST_FORWARD";
        } else if (so->so_tcpcb) {
            state = tcpstates[so->so_tcpcb->t_state];
        } else {
            state = "NONE";
        }
        if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) {
            src_len = sizeof(src);
            getsockname(so->s, (struct sockaddr *)&src, &src_len);
            dst_addr = so->so_laddr;
            dst_port = so->so_lport;
        } else {
            src.sin_addr = so->so_laddr;
            src.sin_port = so->so_lport;
            dst_addr = so->so_faddr;
            dst_port = so->so_fport;
        }
        n = snprintf(buf, sizeof(buf), "  TCP[%s]", state);
        memset(&buf[n], ' ', 19 - n);
        buf[19] = 0;
        monitor_printf(mon, "%s %3d %15s %5d ", buf, so->s,
                       src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
                       ntohs(src.sin_port));
        monitor_printf(mon, "%15s %5d %5d %5d\n",
                       inet_ntoa(dst_addr), ntohs(dst_port),
                       so->so_rcv.sb_cc, so->so_snd.sb_cc);
    }

    for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) {
        if (so->so_state & SS_HOSTFWD) {
            n = snprintf(buf, sizeof(buf), "  UDP[HOST_FORWARD]");
            src_len = sizeof(src);
            getsockname(so->s, (struct sockaddr *)&src, &src_len);
            dst_addr = so->so_laddr;
            dst_port = so->so_lport;
        } else {
            n = snprintf(buf, sizeof(buf), "  UDP[%d sec]",
                         (so->so_expire - curtime) / 1000);
            src.sin_addr = so->so_laddr;
            src.sin_port = so->so_lport;
            dst_addr = so->so_faddr;
            dst_port = so->so_fport;
        }
        memset(&buf[n], ' ', 19 - n);
        buf[19] = 0;
        monitor_printf(mon, "%s %3d %15s %5d ", buf, so->s,
                       src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
                       ntohs(src.sin_port));
        monitor_printf(mon, "%15s %5d %5d %5d\n",
                       inet_ntoa(dst_addr), ntohs(dst_port),
                       so->so_rcv.sb_cc, so->so_snd.sb_cc);
    }

    for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) {
        n = snprintf(buf, sizeof(buf), "  ICMP[%d sec]",
                     (so->so_expire - curtime) / 1000);
        src.sin_addr = so->so_laddr;
        dst_addr = so->so_faddr;
        memset(&buf[n], ' ', 19 - n);
        buf[19] = 0;
        monitor_printf(mon, "%s %3d %15s  -    ", buf, so->s,
                       src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
        monitor_printf(mon, "%15s  -    %5d %5d\n", inet_ntoa(dst_addr),
                       so->so_rcv.sb_cc, so->so_snd.sb_cc);
    }
}
Commit	Line	Data
f0cbd3ec FB	1	/*
f0cbd3ec FB	2	* Copyright (c) 1995 Danny Gasparovski.
5fafdf24	3	*
f0cbd3ec FB	4	* Please read the file COPYRIGHT for the
	5	* terms and conditions of the copyright.
	6	*/
	7
f0cbd3ec	8	#include <slirp.h>
6dbe553f JK	9	#include <libslirp.h>
	10
	11	#include "monitor.h"
f0cbd3ec	12
9f349498 JK	13	#ifdef DEBUG
	14	int slirp_debug = DBG_CALL\|DBG_MISC\|DBG_ERROR;
	15	#endif
	16
f0cbd3ec FB	17	struct quehead {
	18	struct quehead *qh_link;
	19	struct quehead *qh_rlink;
	20	};
	21
	22	inline void
511d2b14	23	insque(void a, void b)
f0cbd3ec FB	24	{
	25	register struct quehead element = (struct quehead ) a;
	26	register struct quehead head = (struct quehead ) b;
	27	element->qh_link = head->qh_link;
	28	head->qh_link = (struct quehead *)element;
	29	element->qh_rlink = (struct quehead *)head;
	30	((struct quehead *)(element->qh_link))->qh_rlink
	31	= (struct quehead *)element;
	32	}
	33
	34	inline void
511d2b14	35	remque(void *a)
f0cbd3ec FB	36	{
	37	register struct quehead element = (struct quehead ) a;
	38	((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
	39	((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
	40	element->qh_rlink = NULL;
f0cbd3ec FB	41	}
f0cbd3ec FB	42
a13a4126 JK	43	int add_exec(struct ex_list *ex_ptr, int do_pty, char exec,
a13a4126 JK	44	struct in_addr addr, int port)
f0cbd3ec FB	45	{
f0cbd3ec FB	46	struct ex_list *tmp_ptr;
5fafdf24	47
f0cbd3ec FB	48	/* First, check if the port is "bound" */
f0cbd3ec FB	49	for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
a13a4126 JK	50	if (port == tmp_ptr->ex_fport &&
	51	addr.s_addr == tmp_ptr->ex_addr.s_addr)
	52	return -1;
f0cbd3ec	53	}
5fafdf24	54
f0cbd3ec FB	55	tmp_ptr = *ex_ptr;
	56	ex_ptr = (struct ex_list )malloc(sizeof(struct ex_list));
	57	(*ex_ptr)->ex_fport = port;
	58	(*ex_ptr)->ex_addr = addr;
	59	(*ex_ptr)->ex_pty = do_pty;
e1c5a2b3	60	(*ex_ptr)->ex_exec = (do_pty == 3) ? exec : strdup(exec);
f0cbd3ec FB	61	(*ex_ptr)->ex_next = tmp_ptr;
	62	return 0;
	63	}
	64
	65	#ifndef HAVE_STRERROR
	66
	67	/*
	68	* For systems with no strerror
	69	*/
	70
	71	extern int sys_nerr;
	72	extern char *sys_errlist[];
	73
	74	char *
	75	strerror(error)
	76	int error;
	77	{
	78	if (error < sys_nerr)
	79	return sys_errlist[error];
	80	else
	81	return "Unknown error.";
	82	}
	83
	84	#endif
	85
	86
a3d4af03 FB	87	#ifdef _WIN32
	88
	89	int
9634d903	90	fork_exec(struct socket so, const char ex, int do_pty)
a3d4af03 FB	91	{
	92	/* not implemented */
	93	return 0;
	94	}
	95
	96	#else
	97
f0cbd3ec FB	98	/*
	99	* XXX This is ugly
	100	* We create and bind a socket, then fork off to another
	101	* process, which connects to this socket, after which we
	102	* exec the wanted program. If something (strange) happens,
	103	* the accept() call could block us forever.
5fafdf24	104	*
f0cbd3ec FB	105	* do_pty = 0 Fork/exec inetd style
	106	* do_pty = 1 Fork/exec using slirp.telnetd
	107	* do_ptr = 2 Fork/exec using pty
	108	*/
	109	int
9634d903	110	fork_exec(struct socket so, const char ex, int do_pty)
f0cbd3ec FB	111	{
	112	int s;
	113	struct sockaddr_in addr;
242acf3a	114	socklen_t addrlen = sizeof(addr);
f0cbd3ec	115	int opt;
9634d903	116	int master = -1;
7ccfb2eb	117	const char *argv[256];
f0cbd3ec FB	118	/* don't want to clobber the original */
f0cbd3ec FB	119	char *bptr;
9634d903	120	const char *curarg;
7b91a172	121	int c, i, ret;
4d54ec78	122	pid_t pid;
5fafdf24	123
f0cbd3ec FB	124	DEBUG_CALL("fork_exec");
	125	DEBUG_ARG("so = %lx", (long)so);
	126	DEBUG_ARG("ex = %lx", (long)ex);
	127	DEBUG_ARG("do_pty = %lx", (long)do_pty);
5fafdf24	128
f0cbd3ec	129	if (do_pty == 2) {
3f9b2b1f	130	return 0;
f0cbd3ec FB	131	} else {
	132	addr.sin_family = AF_INET;
	133	addr.sin_port = 0;
	134	addr.sin_addr.s_addr = INADDR_ANY;
3b46e624	135
40ff6d7e	136	if ((s = qemu_socket(AF_INET, SOCK_STREAM, 0)) < 0 \|\|
f0cbd3ec FB	137	bind(s, (struct sockaddr *)&addr, addrlen) < 0 \|\|
	138	listen(s, 1) < 0) {
	139	lprint("Error: inet socket: %s\n", strerror(errno));
379ff53d	140	closesocket(s);
3b46e624	141
f0cbd3ec FB	142	return 0;
	143	}
	144	}
5fafdf24	145
4d54ec78 PB	146	pid = fork();
4d54ec78 PB	147	switch(pid) {
f0cbd3ec FB	148	case -1:
	149	lprint("Error: fork failed: %s\n", strerror(errno));
	150	close(s);
	151	if (do_pty == 2)
	152	close(master);
	153	return 0;
3b46e624	154
f0cbd3ec	155	case 0:
565465fc JK	156	setsid();
565465fc JK	157
f0cbd3ec FB	158	/* Set the DISPLAY */
	159	if (do_pty == 2) {
	160	(void) close(master);
	161	#ifdef TIOCSCTTY /* XXXXX */
f0cbd3ec FB	162	ioctl(s, TIOCSCTTY, (char *)NULL);
	163	#endif
	164	} else {
	165	getsockname(s, (struct sockaddr *)&addr, &addrlen);
	166	close(s);
	167	/*
	168	* Connect to the socket
	169	* XXX If any of these fail, we're in trouble!
	170	*/
40ff6d7e	171	s = qemu_socket(AF_INET, SOCK_STREAM, 0);
f0cbd3ec	172	addr.sin_addr = loopback_addr;
7b91a172 FB	173	do {
	174	ret = connect(s, (struct sockaddr *)&addr, addrlen);
	175	} while (ret < 0 && errno == EINTR);
f0cbd3ec	176	}
3b46e624	177
f0cbd3ec FB	178	dup2(s, 0);
	179	dup2(s, 1);
	180	dup2(s, 2);
9634d903	181	for (s = getdtablesize() - 1; s >= 3; s--)
f0cbd3ec	182	close(s);
3b46e624	183
f0cbd3ec	184	i = 0;
7267c094	185	bptr = g_strdup(ex); /* No need to free() this */
f0cbd3ec FB	186	if (do_pty == 1) {
	187	/* Setup "slirp.telnetd -x" */
	188	argv[i++] = "slirp.telnetd";
	189	argv[i++] = "-x";
	190	argv[i++] = bptr;
	191	} else
	192	do {
	193	/* Change the string into argv[] */
	194	curarg = bptr;
	195	while (bptr != ' ' && bptr != (char)0)
	196	bptr++;
	197	c = *bptr;
	198	*bptr++ = (char)0;
	199	argv[i++] = strdup(curarg);
	200	} while (c);
3b46e624	201
511d2b14	202	argv[i] = NULL;
7ccfb2eb	203	execvp(argv[0], (char **)argv);
3b46e624	204
f0cbd3ec	205	/* Ooops, failed, let's tell the user why */
f0d98b05 KS	206	fprintf(stderr, "Error: execvp of %s failed: %s\n",
f0d98b05 KS	207	argv[0], strerror(errno));
f0cbd3ec FB	208	close(0); close(1); close(2); /* XXX */
f0cbd3ec FB	209	exit(1);
3b46e624	210
f0cbd3ec	211	default:
4d54ec78	212	qemu_add_child_watch(pid);
f0cbd3ec FB	213	if (do_pty == 2) {
	214	close(s);
	215	so->s = master;
	216	} else {
	217	/*
	218	* XXX this could block us...
	219	* XXX Should set a timer here, and if accept() doesn't
	220	* return after X seconds, declare it a failure
	221	* The only reason this will block forever is if socket()
	222	* of connect() fail in the child process
	223	*/
7b91a172 FB	224	do {
	225	so->s = accept(s, (struct sockaddr *)&addr, &addrlen);
	226	} while (so->s < 0 && errno == EINTR);
	227	closesocket(s);
f0cbd3ec FB	228	opt = 1;
	229	setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
	230	opt = 1;
	231	setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int));
	232	}
	233	fd_nonblock(so->s);
3b46e624	234
f0cbd3ec	235	/* Append the telnet options now */
511d2b14	236	if (so->so_m != NULL && do_pty == 1) {
f0cbd3ec	237	sbappend(so, so->so_m);
511d2b14	238	so->so_m = NULL;
f0cbd3ec	239	}
3b46e624	240
f0cbd3ec FB	241	return 1;
	242	}
	243	}
	244	#endif
	245
	246	#ifndef HAVE_STRDUP
	247	char *
	248	strdup(str)
	249	const char *str;
	250	{
	251	char *bptr;
5fafdf24	252
f0cbd3ec FB	253	bptr = (char *)malloc(strlen(str)+1);
f0cbd3ec FB	254	strcpy(bptr, str);
5fafdf24	255
f0cbd3ec FB	256	return bptr;
	257	}
	258	#endif
	259
376253ec	260	#include "monitor.h"
c9f10306	261
31a60e22 BS	262	void lprint(const char *format, ...)
	263	{
	264	va_list args;
	265
	266	va_start(args, format);
8631b608	267	monitor_vprintf(default_mon, format, args);
31a60e22 BS	268	va_end(args);
31a60e22 BS	269	}
f0cbd3ec	270
f0cbd3ec	271	void
511d2b14	272	u_sleep(int usec)
f0cbd3ec FB	273	{
	274	struct timeval t;
	275	fd_set fdset;
5fafdf24	276
f0cbd3ec	277	FD_ZERO(&fdset);
5fafdf24	278
f0cbd3ec FB	279	t.tv_sec = 0;
f0cbd3ec FB	280	t.tv_usec = usec * 1000;
5fafdf24	281
f0cbd3ec FB	282	select(0, &fdset, &fdset, &fdset, &t);
	283	}
	284
	285	/*
	286	* Set fd blocking and non-blocking
	287	*/
	288
	289	void
511d2b14	290	fd_nonblock(int fd)
f0cbd3ec FB	291	{
f0cbd3ec FB	292	#ifdef FIONBIO
b9e82a59	293	#ifdef _WIN32
c5b76b38	294	unsigned long opt = 1;
b9e82a59 BS	295	#else
	296	int opt = 1;
	297	#endif
5fafdf24	298
379ff53d	299	ioctlsocket(fd, FIONBIO, &opt);
f0cbd3ec FB	300	#else
f0cbd3ec FB	301	int opt;
5fafdf24	302
f0cbd3ec FB	303	opt = fcntl(fd, F_GETFL, 0);
	304	opt \|= O_NONBLOCK;
	305	fcntl(fd, F_SETFL, opt);
	306	#endif
	307	}
	308
	309	void
511d2b14	310	fd_block(int fd)
f0cbd3ec FB	311	{
f0cbd3ec FB	312	#ifdef FIONBIO
c5b76b38 BS	313	#ifdef _WIN32
	314	unsigned long opt = 0;
	315	#else
f0cbd3ec	316	int opt = 0;
c5b76b38	317	#endif
5fafdf24	318
379ff53d	319	ioctlsocket(fd, FIONBIO, &opt);
f0cbd3ec FB	320	#else
f0cbd3ec FB	321	int opt;
5fafdf24	322
f0cbd3ec FB	323	opt = fcntl(fd, F_GETFL, 0);
	324	opt &= ~O_NONBLOCK;
	325	fcntl(fd, F_SETFL, opt);
	326	#endif
	327	}
	328
9f8bd042	329	void slirp_connection_info(Slirp slirp, Monitor mon)
6dbe553f JK	330	{
	331	const char * const tcpstates[] = {
	332	[TCPS_CLOSED] = "CLOSED",
	333	[TCPS_LISTEN] = "LISTEN",
	334	[TCPS_SYN_SENT] = "SYN_SENT",
	335	[TCPS_SYN_RECEIVED] = "SYN_RCVD",
	336	[TCPS_ESTABLISHED] = "ESTABLISHED",
	337	[TCPS_CLOSE_WAIT] = "CLOSE_WAIT",
	338	[TCPS_FIN_WAIT_1] = "FIN_WAIT_1",
	339	[TCPS_CLOSING] = "CLOSING",
	340	[TCPS_LAST_ACK] = "LAST_ACK",
	341	[TCPS_FIN_WAIT_2] = "FIN_WAIT_2",
	342	[TCPS_TIME_WAIT] = "TIME_WAIT",
	343	};
	344	struct in_addr dst_addr;
	345	struct sockaddr_in src;
	346	socklen_t src_len;
	347	uint16_t dst_port;
	348	struct socket *so;
	349	const char *state;
	350	char buf[20];
	351	int n;
	352
	353	monitor_printf(mon, " Protocol[State] FD Source Address Port "
	354	"Dest. Address Port RecvQ SendQ\n");
	355
460fec67	356	for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
6dbe553f JK	357	if (so->so_state & SS_HOSTFWD) {
	358	state = "HOST_FORWARD";
	359	} else if (so->so_tcpcb) {
	360	state = tcpstates[so->so_tcpcb->t_state];
	361	} else {
	362	state = "NONE";
	363	}
	364	if (so->so_state & (SS_HOSTFWD \| SS_INCOMING)) {
	365	src_len = sizeof(src);
	366	getsockname(so->s, (struct sockaddr *)&src, &src_len);
	367	dst_addr = so->so_laddr;
	368	dst_port = so->so_lport;
	369	} else {
	370	src.sin_addr = so->so_laddr;
	371	src.sin_port = so->so_lport;
	372	dst_addr = so->so_faddr;
	373	dst_port = so->so_fport;
	374	}
	375	n = snprintf(buf, sizeof(buf), " TCP[%s]", state);
	376	memset(&buf[n], ' ', 19 - n);
	377	buf[19] = 0;
	378	monitor_printf(mon, "%s %3d %15s %5d ", buf, so->s,
	379	src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
	380	ntohs(src.sin_port));
	381	monitor_printf(mon, "%15s %5d %5d %5d\n",
	382	inet_ntoa(dst_addr), ntohs(dst_port),
	383	so->so_rcv.sb_cc, so->so_snd.sb_cc);
	384	}
	385
460fec67	386	for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) {
6dbe553f JK	387	if (so->so_state & SS_HOSTFWD) {
	388	n = snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]");
	389	src_len = sizeof(src);
	390	getsockname(so->s, (struct sockaddr *)&src, &src_len);
	391	dst_addr = so->so_laddr;
	392	dst_port = so->so_lport;
	393	} else {
	394	n = snprintf(buf, sizeof(buf), " UDP[%d sec]",
	395	(so->so_expire - curtime) / 1000);
	396	src.sin_addr = so->so_laddr;
	397	src.sin_port = so->so_lport;
	398	dst_addr = so->so_faddr;
	399	dst_port = so->so_fport;
	400	}
	401	memset(&buf[n], ' ', 19 - n);
	402	buf[19] = 0;
	403	monitor_printf(mon, "%s %3d %15s %5d ", buf, so->s,
	404	src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
	405	ntohs(src.sin_port));
	406	monitor_printf(mon, "%15s %5d %5d %5d\n",
	407	inet_ntoa(dst_addr), ntohs(dst_port),
	408	so->so_rcv.sb_cc, so->so_snd.sb_cc);
	409	}
e6d43cfb JK	410
	411	for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) {
	412	n = snprintf(buf, sizeof(buf), " ICMP[%d sec]",
	413	(so->so_expire - curtime) / 1000);
	414	src.sin_addr = so->so_laddr;
	415	dst_addr = so->so_faddr;
	416	memset(&buf[n], ' ', 19 - n);
	417	buf[19] = 0;
	418	monitor_printf(mon, "%s %3d %15s - ", buf, so->s,
	419	src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
	420	monitor_printf(mon, "%15s - %5d %5d\n", inet_ntoa(dst_addr),
	421	so->so_rcv.sb_cc, so->so_snd.sb_cc);
	422	}
6dbe553f	423	}