Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

1 files changed, 1081 insertions, 0 deletions

diff --git a/remote_cmds/telnetd.tproj/utility.c b/remote_cmds/telnetd.tproj/utility.c
new file mode 100644
index 0000000..306c027
--- /dev/null
+++ b/remote_cmds/telnetd.tproj/utility.c
@@ -0,0 +1,1081 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static const char sccsid[] = "@(#)utility.c	8.4 (Berkeley) 5/30/95";
+#endif /* not lint */
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/contrib/telnet/telnetd/utility.c,v 1.13 2003/05/04 02:54:49 obrien Exp $");
+
+#ifdef __FreeBSD__
+#include <locale.h>
+#include <sys/utsname.h>
+#endif
+#include <string.h>
+#define PRINTOPTIONS
+#include "telnetd.h"
+
+#ifdef	AUTHENTICATION
+#include <libtelnet/auth.h>
+#endif
+#ifdef	ENCRYPTION
+#include <libtelnet/encrypt.h>
+#endif
+
+/*
+ * utility functions performing io related tasks
+ */
+
+/*
+ * ttloop
+ *
+ *	A small subroutine to flush the network output buffer, get some data
+ * from the network, and pass it through the telnet state machine.  We
+ * also flush the pty input buffer (by dropping its data) if it becomes
+ * too full.
+ */
+
+    void
+ttloop()
+{
+
+    DIAG(TD_REPORT, output_data("td: ttloop\r\n"));
+    if (nfrontp - nbackp > 0) {
+	netflush();
+    }
+    ncc = read(net, netibuf, sizeof netibuf);
+    if (ncc < 0) {
+	syslog(LOG_INFO, "ttloop:  read: %m");
+	exit(1);
+    } else if (ncc == 0) {
+	syslog(LOG_INFO, "ttloop:  peer died: %m");
+	exit(1);
+    }
+    DIAG(TD_REPORT, output_data("td: ttloop read %d chars\r\n", ncc));
+    netip = netibuf;
+    telrcv();			/* state machine */
+    if (ncc > 0) {
+	pfrontp = pbackp = ptyobuf;
+	telrcv();
+    }
+}  /* end of ttloop */
+
+/*
+ * Check a descriptor to see if out of band data exists on it.
+ */
+int
+stilloob(int s)
+{
+    static struct timeval timeout = { 0, 0 };
+    fd_set	excepts;
+    int value;
+
+    do {
+	FD_ZERO(&excepts);
+	FD_SET(s, &excepts);
+	memset((char *)&timeout, 0, sizeof timeout);
+	value = select(s+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout);
+    } while ((value == -1) && (errno == EINTR));
+
+    if (value < 0) {
+	fatalperror(mpty, "select");
+    }
+    if (FD_ISSET(s, &excepts)) {
+	return 1;
+    } else {
+	return 0;
+    }
+}
+
+void
+ptyflush(void)
+{
+	int n;
+
+	if ((n = pfrontp - pbackp) > 0) {
+		DIAG(TD_REPORT | TD_PTYDATA,
+		    output_data("td: ptyflush %d chars\r\n", n));
+		DIAG(TD_PTYDATA, printdata("pd", pbackp, n));
+		n = write(mpty, pbackp, n);
+	}
+	if (n < 0) {
+		if (errno == EWOULDBLOCK || errno == EINTR)
+			return;
+		cleanup(0);
+	}
+	pbackp += n;
+	if (pbackp == pfrontp)
+		pbackp = pfrontp = ptyobuf;
+}
+
+/*
+ * nextitem()
+ *
+ *	Return the address of the next "item" in the TELNET data
+ * stream.  This will be the address of the next character if
+ * the current address is a user data character, or it will
+ * be the address of the character following the TELNET command
+ * if the current address is a TELNET IAC ("I Am a Command")
+ * character.
+ */
+static char *
+nextitem(char *current)
+{
+    if ((*current&0xff) != IAC) {
+	return current+1;
+    }
+    switch (*(current+1)&0xff) {
+    case DO:
+    case DONT:
+    case WILL:
+    case WONT:
+	return current+3;
+    case SB:		/* loop forever looking for the SE */
+	{
+	    char *look = current+2;
+
+	    for (;;) {
+		if ((*look++&0xff) == IAC) {
+		    if ((*look++&0xff) == SE) {
+			return look;
+		    }
+		}
+	    }
+	}
+    default:
+	return current+2;
+    }
+}  /* end of nextitem */
+
+/*
+ * netclear()
+ *
+ *	We are about to do a TELNET SYNCH operation.  Clear
+ * the path to the network.
+ *
+ *	Things are a bit tricky since we may have sent the first
+ * byte or so of a previous TELNET command into the network.
+ * So, we have to scan the network buffer from the beginning
+ * until we are up to where we want to be.
+ *
+ *	A side effect of what we do, just to keep things
+ * simple, is to clear the urgent data pointer.  The principal
+ * caller should be setting the urgent data pointer AFTER calling
+ * us in any case.
+ */
+void
+netclear(void)
+{
+    char *thisitem, *next;
+    char *good;
+#define	wewant(p)	((nfrontp > p) && ((*p&0xff) == IAC) && \
+				((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL))
+
+#ifdef	ENCRYPTION
+    thisitem = nclearto > netobuf ? nclearto : netobuf;
+#else	/* ENCRYPTION */
+    thisitem = netobuf;
+#endif	/* ENCRYPTION */
+
+    while ((next = nextitem(thisitem)) <= nbackp) {
+	thisitem = next;
+    }
+
+    /* Now, thisitem is first before/at boundary. */
+
+#ifdef	ENCRYPTION
+    good = nclearto > netobuf ? nclearto : netobuf;
+#else	/* ENCRYPTION */
+    good = netobuf;	/* where the good bytes go */
+#endif	/* ENCRYPTION */
+
+    while (nfrontp > thisitem) {
+	if (wewant(thisitem)) {
+	    int length;
+
+	    next = thisitem;
+	    do {
+		next = nextitem(next);
+	    } while (wewant(next) && (nfrontp > next));
+	    length = next-thisitem;
+	    memmove(good, thisitem, length);
+	    good += length;
+	    thisitem = next;
+	} else {
+	    thisitem = nextitem(thisitem);
+	}
+    }
+
+    nbackp = netobuf;
+    nfrontp = good;		/* next byte to be sent */
+    neturg = 0;
+}  /* end of netclear */
+
+/*
+ *  netflush
+ *		Send as much data as possible to the network,
+ *	handling requests for urgent data.
+ */
+void
+netflush(void)
+{
+    int n;
+    extern int not42;
+
+    while ((n = nfrontp - nbackp) > 0) {
+#if 0
+	/* XXX This causes output_data() to recurse and die */
+	DIAG(TD_REPORT, {
+	    n += output_data("td: netflush %d chars\r\n", n);
+	});
+#endif
+#ifdef	ENCRYPTION
+	if (encrypt_output) {
+		char *s = nclearto ? nclearto : nbackp;
+		if (nfrontp - s > 0) {
+			(*encrypt_output)((unsigned char *)s, nfrontp-s);
+			nclearto = nfrontp;
+		}
+	}
+#endif	/* ENCRYPTION */
+	/*
+	 * if no urgent data, or if the other side appears to be an
+	 * old 4.2 client (and thus unable to survive TCP urgent data),
+	 * write the entire buffer in non-OOB mode.
+	 */
+	if ((neturg == 0) || (not42 == 0)) {
+	    n = write(net, nbackp, n);	/* normal write */
+	} else {
+	    n = neturg - nbackp;
+	    /*
+	     * In 4.2 (and 4.3) systems, there is some question about
+	     * what byte in a sendOOB operation is the "OOB" data.
+	     * To make ourselves compatible, we only send ONE byte
+	     * out of band, the one WE THINK should be OOB (though
+	     * we really have more the TCP philosophy of urgent data
+	     * rather than the Unix philosophy of OOB data).
+	     */
+	    if (n > 1) {
+		n = send(net, nbackp, n-1, 0);	/* send URGENT all by itself */
+	    } else {
+		n = send(net, nbackp, n, MSG_OOB);	/* URGENT data */
+	    }
+	}
+	if (n == -1) {
+	    if (errno == EWOULDBLOCK || errno == EINTR)
+		continue;
+	    cleanup(0);
+	    /* NOTREACHED */
+	}
+	nbackp += n;
+#ifdef	ENCRYPTION
+	if (nbackp > nclearto)
+	    nclearto = 0;
+#endif	/* ENCRYPTION */
+	if (nbackp >= neturg) {
+	    neturg = 0;
+	}
+	if (nbackp == nfrontp) {
+	    nbackp = nfrontp = netobuf;
+#ifdef	ENCRYPTION
+	    nclearto = 0;
+#endif	/* ENCRYPTION */
+	}
+    }
+    return;
+}  /* end of netflush */
+
+
+/*
+ * miscellaneous functions doing a variety of little jobs follow ...
+ */
+
+
+void
+fatal(int f, const char *msg)
+{
+	char buf[BUFSIZ];
+
+	(void) snprintf(buf, sizeof(buf), "telnetd: %s.\r\n", msg);
+#ifdef	ENCRYPTION
+	if (encrypt_output) {
+		/*
+		 * Better turn off encryption first....
+		 * Hope it flushes...
+		 */
+		encrypt_send_end();
+		netflush();
+	}
+#endif	/* ENCRYPTION */
+	(void) write(f, buf, (int)strlen(buf));
+	sleep(1);	/*XXX*/
+	exit(1);
+}
+
+void
+fatalperror(int f, const char *msg)
+{
+	char buf[BUFSIZ];
+
+	(void) snprintf(buf, sizeof(buf), "%s: %s", msg, strerror(errno));
+	fatal(f, buf);
+}
+
+char editedhost[32];
+
+void
+edithost(char *pat, char *host)
+{
+	char *res = editedhost;
+
+	if (!pat)
+		pat = strdup("");
+	while (*pat) {
+		switch (*pat) {
+
+		case '#':
+			if (*host)
+				host++;
+			break;
+
+		case '@':
+			if (*host)
+				*res++ = *host++;
+			break;
+
+		default:
+			*res++ = *pat;
+			break;
+		}
+		if (res == &editedhost[sizeof editedhost - 1]) {
+			*res = '\0';
+			return;
+		}
+		pat++;
+	}
+	if (*host)
+		(void) strncpy(res, host,
+				sizeof editedhost - (res - editedhost) -1);
+	else
+		*res = '\0';
+	editedhost[sizeof editedhost - 1] = '\0';
+}
+
+static char *putlocation;
+
+static void
+putstr(const char *s)
+{
+
+	while (*s)
+		putchr(*s++);
+}
+
+void
+putchr(int cc)
+{
+	*putlocation++ = cc;
+}
+
+#ifdef __FreeBSD__
+static char fmtstr[] = { "%+" };
+#else
+static char fmtstr[] = { "%l:%M%P on %A, %d %B %Y" };
+#endif
+
+void
+putf(char *cp, char *where)
+{
+	char *slash;
+	time_t t;
+	char db[100];
+#ifdef __FreeBSD__
+	static struct utsname kerninfo;
+
+	if (!*kerninfo.sysname)
+		uname(&kerninfo);
+#endif
+
+	putlocation = where;
+
+	while (*cp) {
+		if (*cp =='\n') {
+			putstr("\r\n");
+			cp++;
+			continue;
+		} else if (*cp != '%') {
+			putchr(*cp++);
+			continue;
+		}
+		switch (*++cp) {
+
+		case 't':
+#ifdef	STREAMSPTY
+			/* names are like /dev/pts/2 -- we want pts/2 */
+			slash = strchr(line+1, '/');
+#else
+			slash = strrchr(line, '/');
+#endif
+			if (slash == (char *) 0)
+				putstr(line);
+			else
+				putstr(&slash[1]);
+			break;
+
+		case 'h':
+			putstr(editedhost);
+			break;
+
+		case 'd':
+#ifdef __FreeBSD__
+			setlocale(LC_TIME, "");
+#endif
+			(void)time(&t);
+			(void)strftime(db, sizeof(db), fmtstr, localtime(&t));
+			putstr(db);
+			break;
+
+#ifdef __FreeBSD__
+		case 's':
+			putstr(kerninfo.sysname);
+			break;
+
+		case 'm':
+			putstr(kerninfo.machine);
+			break;
+
+		case 'r':
+			putstr(kerninfo.release);
+			break;
+
+		case 'v':
+			putstr(kerninfo.version);
+			break;
+#endif
+
+		case '%':
+			putchr('%');
+			break;
+		}
+		cp++;
+	}
+}
+
+#ifdef DIAGNOSTICS
+/*
+ * Print telnet options and commands in plain text, if possible.
+ */
+void
+printoption(const char *fmt, int option)
+{
+	if (TELOPT_OK(option))
+		output_data("%s %s\r\n", fmt, TELOPT(option));
+	else if (TELCMD_OK(option))
+		output_data("%s %s\r\n", fmt, TELCMD(option));
+	else
+		output_data("%s %d\r\n", fmt, option);
+	return;
+}
+
+void
+printsub(char direction, unsigned char *pointer, int length)
+{
+    int i = 0;
+
+	if (!(diagnostic & TD_OPTIONS))
+		return;
+
+	if (direction) {
+	    output_data("td: %s suboption ",
+					direction == '<' ? "recv" : "send");
+	    if (length >= 3) {
+		int j;
+
+		i = pointer[length-2];
+		j = pointer[length-1];
+
+		if (i != IAC || j != SE) {
+		    output_data("(terminated by ");
+		    if (TELOPT_OK(i))
+			output_data("%s ", TELOPT(i));
+		    else if (TELCMD_OK(i))
+			output_data("%s ", TELCMD(i));
+		    else
+			output_data("%d ", i);
+		    if (TELOPT_OK(j))
+			output_data("%s", TELOPT(j));
+		    else if (TELCMD_OK(j))
+			output_data("%s", TELCMD(j));
+		    else
+			output_data("%d", j);
+		    output_data(", not IAC SE!) ");
+		}
+	    }
+	    length -= 2;
+	}
+	if (length < 1) {
+	    output_data("(Empty suboption??\?)");
+	    return;
+	}
+	switch (pointer[0]) {
+	case TELOPT_TTYPE:
+	    output_data("TERMINAL-TYPE ");
+	    switch (pointer[1]) {
+	    case TELQUAL_IS:
+		output_data("IS \"%.*s\"", length-2, (char *)pointer+2);
+		break;
+	    case TELQUAL_SEND:
+		output_data("SEND");
+		break;
+	    default:
+		output_data(
+				"- unknown qualifier %d (0x%x).",
+				pointer[1], pointer[1]);
+	    }
+	    break;
+	case TELOPT_TSPEED:
+	    output_data("TERMINAL-SPEED");
+	    if (length < 2) {
+		output_data(" (empty suboption??\?)");
+		break;
+	    }
+	    switch (pointer[1]) {
+	    case TELQUAL_IS:
+		output_data(" IS %.*s", length-2, (char *)pointer+2);
+		break;
+	    default:
+		if (pointer[1] == 1)
+		    output_data(" SEND");
+		else
+		    output_data(" %d (unknown)", pointer[1]);
+		for (i = 2; i < length; i++) {
+		    output_data(" ?%d?", pointer[i]);
+		}
+		break;
+	    }
+	    break;
+
+	case TELOPT_LFLOW:
+	    output_data("TOGGLE-FLOW-CONTROL");
+	    if (length < 2) {
+		output_data(" (empty suboption??\?)");
+		break;
+	    }
+	    switch (pointer[1]) {
+	    case LFLOW_OFF:
+		output_data(" OFF"); break;
+	    case LFLOW_ON:
+		output_data(" ON"); break;
+	    case LFLOW_RESTART_ANY:
+		output_data(" RESTART-ANY"); break;
+	    case LFLOW_RESTART_XON:
+		output_data(" RESTART-XON"); break;
+	    default:
+		output_data(" %d (unknown)", pointer[1]);
+	    }
+	    for (i = 2; i < length; i++) {
+		output_data(" ?%d?", pointer[i]);
+	    }
+	    break;
+
+	case TELOPT_NAWS:
+	    output_data("NAWS");
+	    if (length < 2) {
+		output_data(" (empty suboption??\?)");
+		break;
+	    }
+	    if (length == 2) {
+		output_data(" ?%d?", pointer[1]);
+		break;
+	    }
+	    output_data(" %d %d (%d)",
+		pointer[1], pointer[2],
+		(int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
+	    if (length == 4) {
+		output_data(" ?%d?", pointer[3]);
+		break;
+	    }
+	    output_data(" %d %d (%d)",
+		pointer[3], pointer[4],
+		(int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
+	    for (i = 5; i < length; i++) {
+		output_data(" ?%d?", pointer[i]);
+	    }
+	    break;
+
+	case TELOPT_LINEMODE:
+	    output_data("LINEMODE ");
+	    if (length < 2) {
+		output_data(" (empty suboption??\?)");
+		break;
+	    }
+	    switch (pointer[1]) {
+	    case WILL:
+		output_data("WILL ");
+		goto common;
+	    case WONT:
+		output_data("WONT ");
+		goto common;
+	    case DO:
+		output_data("DO ");
+		goto common;
+	    case DONT:
+		output_data("DONT ");
+	    common:
+		if (length < 3) {
+		    output_data("(no option??\?)");
+		    break;
+		}
+		switch (pointer[2]) {
+		case LM_FORWARDMASK:
+		    output_data("Forward Mask");
+		    for (i = 3; i < length; i++) {
+			output_data(" %x", pointer[i]);
+		    }
+		    break;
+		default:
+		    output_data("%d (unknown)", pointer[2]);
+		    for (i = 3; i < length; i++) {
+			output_data(" %d", pointer[i]);
+		    }
+		    break;
+		}
+		break;
+
+	    case LM_SLC:
+		output_data("SLC");
+		for (i = 2; i < length - 2; i += 3) {
+		    if (SLC_NAME_OK(pointer[i+SLC_FUNC]))
+			output_data(" %s", SLC_NAME(pointer[i+SLC_FUNC]));
+		    else
+			output_data(" %d", pointer[i+SLC_FUNC]);
+		    switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
+		    case SLC_NOSUPPORT:
+			output_data(" NOSUPPORT"); break;
+		    case SLC_CANTCHANGE:
+			output_data(" CANTCHANGE"); break;
+		    case SLC_VARIABLE:
+			output_data(" VARIABLE"); break;
+		    case SLC_DEFAULT:
+			output_data(" DEFAULT"); break;
+		    }
+		    output_data("%s%s%s",
+			pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "",
+			pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "",
+			pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : "");
+		    if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN|
+						SLC_FLUSHOUT| SLC_LEVELBITS)) {
+			output_data("(0x%x)", pointer[i+SLC_FLAGS]);
+		    }
+		    output_data(" %d;", pointer[i+SLC_VALUE]);
+		    if ((pointer[i+SLC_VALUE] == IAC) &&
+			(pointer[i+SLC_VALUE+1] == IAC))
+				i++;
+		}
+		for (; i < length; i++) {
+		    output_data(" ?%d?", pointer[i]);
+		}
+		break;
+
+	    case LM_MODE:
+		output_data("MODE ");
+		if (length < 3) {
+		    output_data("(no mode??\?)");
+		    break;
+		}
+		{
+		    char tbuf[32];
+		    sprintf(tbuf, "%s%s%s%s%s",
+			pointer[2]&MODE_EDIT ? "|EDIT" : "",
+			pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "",
+			pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "",
+			pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "",
+			pointer[2]&MODE_ACK ? "|ACK" : "");
+		    output_data("%s", tbuf[1] ? &tbuf[1] : "0");
+		}
+		if (pointer[2]&~(MODE_EDIT|MODE_TRAPSIG|MODE_ACK)) {
+		    output_data(" (0x%x)", pointer[2]);
+		}
+		for (i = 3; i < length; i++) {
+		    output_data(" ?0x%x?", pointer[i]);
+		}
+		break;
+	    default:
+		output_data("%d (unknown)", pointer[1]);
+		for (i = 2; i < length; i++) {
+		    output_data(" %d", pointer[i]);
+		}
+	    }
+	    break;
+
+	case TELOPT_STATUS: {
+	    const char *cp;
+	    int j, k;
+
+	    output_data("STATUS");
+
+	    switch (pointer[1]) {
+	    default:
+		if (pointer[1] == TELQUAL_SEND)
+		    output_data(" SEND");
+		else
+		    output_data(" %d (unknown)", pointer[1]);
+		for (i = 2; i < length; i++) {
+		    output_data(" ?%d?", pointer[i]);
+		}
+		break;
+	    case TELQUAL_IS:
+		output_data(" IS\r\n");
+
+		for (i = 2; i < length; i++) {
+		    switch(pointer[i]) {
+		    case DO:	cp = "DO"; goto common2;
+		    case DONT:	cp = "DONT"; goto common2;
+		    case WILL:	cp = "WILL"; goto common2;
+		    case WONT:	cp = "WONT"; goto common2;
+		    common2:
+			i++;
+			if (TELOPT_OK(pointer[i]))
+			    output_data(" %s %s", cp, TELOPT(pointer[i]));
+			else
+			    output_data(" %s %d", cp, pointer[i]);
+
+			output_data("\r\n");
+			break;
+
+		    case SB:
+			output_data(" SB ");
+			i++;
+			j = k = i;
+			while (j < length) {
+			    if (pointer[j] == SE) {
+				if (j+1 == length)
+				    break;
+				if (pointer[j+1] == SE)
+				    j++;
+				else
+				    break;
+			    }
+			    pointer[k++] = pointer[j++];
+			}
+			printsub(0, &pointer[i], k - i);
+			if (i < length) {
+			    output_data(" SE");
+			    i = j;
+			} else
+			    i = j - 1;
+
+			output_data("\r\n");
+
+			break;
+
+		    default:
+			output_data(" %d", pointer[i]);
+			break;
+		    }
+		}
+		break;
+	    }
+	    break;
+	  }
+
+	case TELOPT_XDISPLOC:
+	    output_data("X-DISPLAY-LOCATION ");
+	    switch (pointer[1]) {
+	    case TELQUAL_IS:
+		output_data("IS \"%.*s\"", length-2, (char *)pointer+2);
+		break;
+	    case TELQUAL_SEND:
+		output_data("SEND");
+		break;
+	    default:
+		output_data("- unknown qualifier %d (0x%x).",
+				pointer[1], pointer[1]);
+	    }
+	    break;
+
+	case TELOPT_NEW_ENVIRON:
+	    output_data("NEW-ENVIRON ");
+	    goto env_common1;
+	case TELOPT_OLD_ENVIRON:
+	    output_data("OLD-ENVIRON");
+	env_common1:
+	    switch (pointer[1]) {
+	    case TELQUAL_IS:
+		output_data("IS ");
+		goto env_common;
+	    case TELQUAL_SEND:
+		output_data("SEND ");
+		goto env_common;
+	    case TELQUAL_INFO:
+		output_data("INFO ");
+	    env_common:
+		{
+		    int noquote = 2;
+		    for (i = 2; i < length; i++ ) {
+			switch (pointer[i]) {
+			case NEW_ENV_VAR:
+			    output_data("%s", "\" VAR " + noquote);
+			    noquote = 2;
+			    break;
+
+			case NEW_ENV_VALUE:
+			    output_data("%s", "\" VALUE " + noquote);
+			    noquote = 2;
+			    break;
+
+			case ENV_ESC:
+			    output_data("%s", "\" ESC " + noquote);
+			    noquote = 2;
+			    break;
+
+			case ENV_USERVAR:
+			    output_data("%s", "\" USERVAR " + noquote);
+			    noquote = 2;
+			    break;
+
+			default:
+			    if (isprint(pointer[i]) && pointer[i] != '"') {
+				if (noquote) {
+				    output_data("\"");
+				    noquote = 0;
+				}
+				output_data("%c", pointer[i]);
+			    } else {
+				output_data("\" %03o " + noquote,
+							pointer[i]);
+				noquote = 2;
+			    }
+			    break;
+			}
+		    }
+		    if (!noquote)
+			output_data("\"");
+		    break;
+		}
+	    }
+	    break;
+
+#ifdef	AUTHENTICATION
+	case TELOPT_AUTHENTICATION:
+	    output_data("AUTHENTICATION");
+
+	    if (length < 2) {
+		output_data(" (empty suboption??\?)");
+		break;
+	    }
+	    switch (pointer[1]) {
+	    case TELQUAL_REPLY:
+	    case TELQUAL_IS:
+		output_data(" %s ", (pointer[1] == TELQUAL_IS) ?
+							"IS" : "REPLY");
+		if (AUTHTYPE_NAME_OK(pointer[2]))
+		    output_data("%s ", AUTHTYPE_NAME(pointer[2]));
+		else
+		    output_data("%d ", pointer[2]);
+		if (length < 3) {
+		    output_data("(partial suboption??\?)");
+		    break;
+		}
+		output_data("%s|%s",
+			((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+			"CLIENT" : "SERVER",
+			((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+			"MUTUAL" : "ONE-WAY");
+
+    		{
+		    char buf[512];
+		    auth_printsub(&pointer[1], length - 1, (unsigned char*)buf, sizeof(buf));
+		    output_data("%s", buf);
+		}
+		break;
+
+	    case TELQUAL_SEND:
+		i = 2;
+		output_data(" SEND ");
+		while (i < length) {
+		    if (AUTHTYPE_NAME_OK(pointer[i]))
+			output_data("%s ", AUTHTYPE_NAME(pointer[i]));
+		    else
+			output_data("%d ", pointer[i]);
+		    if (++i >= length) {
+			output_data("(partial suboption??\?)");
+			break;
+		    }
+		    output_data("%s|%s ",
+			((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+							"CLIENT" : "SERVER",
+			((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+							"MUTUAL" : "ONE-WAY");
+		    ++i;
+		}
+		break;
+
+	    case TELQUAL_NAME:
+		output_data(" NAME \"%.*s\"", length - 2, pointer + 2);
+		break;
+
+	    default:
+		    for (i = 2; i < length; i++) {
+			output_data(" ?%d?", pointer[i]);
+		    }
+		    break;
+	    }
+	    break;
+#endif
+
+#ifdef	ENCRYPTION
+	case TELOPT_ENCRYPT:
+	    output_data("ENCRYPT");
+	    if (length < 2) {
+		output_data(" (empty suboption??\?)");
+		break;
+	    }
+	    switch (pointer[1]) {
+	    case ENCRYPT_START:
+		output_data(" START");
+		break;
+
+	    case ENCRYPT_END:
+		output_data(" END");
+		break;
+
+	    case ENCRYPT_REQSTART:
+		output_data(" REQUEST-START");
+		break;
+
+	    case ENCRYPT_REQEND:
+		output_data(" REQUEST-END");
+		break;
+
+	    case ENCRYPT_IS:
+	    case ENCRYPT_REPLY:
+		output_data(" %s ", (pointer[1] == ENCRYPT_IS) ?
+							"IS" : "REPLY");
+		if (length < 3) {
+		    output_data(" (partial suboption??\?)");
+		    break;
+		}
+		if (ENCTYPE_NAME_OK(pointer[2]))
+		    output_data("%s ", ENCTYPE_NAME(pointer[2]));
+		else
+		    output_data(" %d (unknown)", pointer[2]);
+
+		{
+		    char buf[512];
+		    encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+		    output_data("%s", buf);
+		}
+		break;
+
+	    case ENCRYPT_SUPPORT:
+		i = 2;
+		output_data(" SUPPORT ");
+		while (i < length) {
+		    if (ENCTYPE_NAME_OK(pointer[i]))
+			output_data("%s ", ENCTYPE_NAME(pointer[i]));
+		    else
+			output_data("%d ", pointer[i]);
+		    i++;
+		}
+		break;
+
+	    case ENCRYPT_ENC_KEYID:
+		output_data(" ENC_KEYID");
+		goto encommon;
+
+	    case ENCRYPT_DEC_KEYID:
+		output_data(" DEC_KEYID");
+		goto encommon;
+
+	    default:
+		output_data(" %d (unknown)", pointer[1]);
+	    encommon:
+		for (i = 2; i < length; i++) {
+		    output_data(" %d", pointer[i]);
+		}
+		break;
+	    }
+	    break;
+#endif	/* ENCRYPTION */
+
+	default:
+	    if (TELOPT_OK(pointer[0]))
+		output_data("%s (unknown)", TELOPT(pointer[0]));
+	    else
+		output_data("%d (unknown)", pointer[i]);
+	    for (i = 1; i < length; i++) {
+		output_data(" %d", pointer[i]);
+	    }
+	    break;
+	}
+	output_data("\r\n");
+}
+
+/*
+ * Dump a data buffer in hex and ascii to the output data stream.
+ */
+void
+printdata(const char *tag, char *ptr, int cnt)
+{
+	int i;
+	char xbuf[30];
+
+	while (cnt) {
+		/* flush net output buffer if no room for new data) */
+		if ((&netobuf[BUFSIZ] - nfrontp) < 80) {
+			netflush();
+		}
+
+		/* add a line of output */
+		output_data("%s: ", tag);
+		for (i = 0; i < 20 && cnt; i++) {
+			output_data("%02x", *ptr);
+			if (isprint(*ptr)) {
+				xbuf[i] = *ptr;
+			} else {
+				xbuf[i] = '.';
+			}
+			if (i % 2) {
+				output_data(" ");
+			}
+			cnt--;
+			ptr++;
+		}
+		xbuf[i] = '\0';
+		output_data(" %s\r\n", xbuf );
+	}
+}
+#endif /* DIAGNOSTICS */