--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/openenvutils/telnetserver/src/utility.c Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,1178 @@
+// utility.c
+//
+// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.
+//
+/*
+ * 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. 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.
+ */
+
+#define PRINTOPTIONS
+#include "telnetd.h"
+
+#ifndef __SYMBIAN32__
+__RCSID("$Heimdal: utility.c,v 1.27 2001/09/03 05:54:17 assar Exp $"
+ "$NetBSD: utility.c,v 1.2 2003/08/07 09:15:30 agc Exp $");
+#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.
+ *
+ * return 0 if OK or 1 if interrupted by a signal.
+ */
+
+int
+ttloop(void)
+{
+ DIAG(TD_REPORT, {
+ output_data("td: ttloop\r\n");
+ });
+
+ if (nfrontp-nbackp)
+ netflush();
+
+ ncc = read(net, netibuf, sizeof netibuf);
+ if (ncc < 0) {
+ if (errno == EINTR)
+ return 1;
+#ifndef __SYMBIAN32__
+ syslog(LOG_INFO, "ttloop: read: %m\n");
+#endif
+ exit(1);
+ } else if (ncc == 0) {
+#ifndef __SYMBIAN32__
+ syslog(LOG_INFO, "ttloop: peer died\n");
+#endif
+ 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();
+ }
+ return 0;
+} /* 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 };
+ fd_set excepts;
+ int value;
+
+ if (s >= FD_SETSIZE)
+ fatal(ourpty, "fd too large");
+
+ do {
+ FD_ZERO(&excepts);
+ FD_SET(s, &excepts);
+ value = select(s+1, 0, 0, &excepts, &timeout);
+ } while ((value == -1) && (errno == EINTR));
+
+ if (value < 0) {
+ fatalperror(ourpty, "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(ourpty, 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.
+ */
+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;
+ }
+}
+
+
+/*
+ * 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
+ thisitem = netobuf;
+#endif
+
+ while ((next = nextitem(thisitem)) <= nbackp) {
+ thisitem = next;
+ }
+
+ /* Now, thisitem is first before/at boundary. */
+
+#ifdef ENCRYPTION
+ good = nclearto > netobuf ? nclearto : netobuf;
+#else
+ good = netobuf; /* where the good bytes go */
+#endif
+
+ 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 */
+
+extern int not42;
+
+/*
+ * netflush
+ * Send as much data as possible to the network,
+ * handling requests for urgent data.
+ */
+void
+netflush(void)
+{
+ int n;
+
+ if ((n = nfrontp - nbackp) > 0) {
+ DIAG(TD_REPORT,
+ { n += output_data("td: netflush %d chars\r\n", n);
+ });
+#ifdef ENCRYPTION
+ if (encrypt_output) {
+ char *s = nclearto ? nclearto : nbackp;
+ if (nfrontp - s > 0) {
+ (*encrypt_output)((unsigned char *)s, nfrontp-s);
+ nclearto = nfrontp;
+ }
+ }
+#endif
+ /*
+ * 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 1 /* remove this to make it work between solaris 2.6 and linux */
+ if ((neturg == 0) || (not42 == 0)) {
+#endif
+ n = write(net, nbackp, n); /* normal write */
+#if 1 /* remove this to make it work between solaris 2.6 and linux */
+ } 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 */
+ }
+ }
+#endif
+ }
+ if (n < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR)
+ return;
+ cleanup(0);
+ }
+ nbackp += n;
+#ifdef ENCRYPTION
+ if (nbackp > nclearto)
+ nclearto = 0;
+#endif
+ if (nbackp >= neturg) {
+ neturg = 0;
+ }
+ if (nbackp == nfrontp) {
+ nbackp = nfrontp = netobuf;
+#ifdef ENCRYPTION
+ nclearto = 0;
+#endif
+ }
+ return;
+}
+
+
+/*
+ * writenet
+ *
+ * Just a handy little function to write a bit of raw data to the net.
+ * It will force a transmit of the buffer if necessary
+ *
+ * arguments
+ * ptr - A pointer to a character string to write
+ * len - How many bytes to write
+ */
+void
+writenet(unsigned char *ptr, int len)
+{
+ /* flush buffer if no room for new data) */
+ while ((&netobuf[BUFSIZ] - nfrontp) < len) {
+ /* if this fails, don't worry, buffer is a little big */
+ netflush();
+ }
+
+ memmove(nfrontp, ptr, len);
+ nfrontp += len;
+}
+
+
+/*
+ * miscellaneous functions doing a variety of little jobs follow ...
+ */
+
+
+void fatal(int f, char *msg)
+{
+ char buf[BUFSIZ];
+
+ 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
+ write(f, buf, (int)strlen(buf));
+ sleep(1); /*XXX*/
+ exit(1);
+}
+
+void
+fatalperror_errno(int f, const char *msg, int error)
+{
+ char buf[BUFSIZ];
+
+ snprintf(buf, sizeof(buf), "%s: %s", msg, strerror(error));
+ fatal(f, buf);
+}
+
+void
+fatalperror(int f, const char *msg)
+{
+ fatalperror_errno(f, msg, errno);
+}
+
+char editedhost[32];
+
+void edithost(char *pat, char *host)
+{
+ char *res = editedhost;
+
+ if (!pat)
+ pat = "";
+ 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)
+ strlcpy (res, host,
+ sizeof editedhost - (res - editedhost));
+ else
+ *res = '\0';
+ editedhost[sizeof editedhost - 1] = '\0';
+}
+
+static char *putlocation;
+
+void
+putstr(char *s)
+{
+
+ while (*s)
+ putchr(*s++);
+}
+
+void
+putchr(int cc)
+{
+ *putlocation++ = cc;
+}
+
+/*
+ * This is split on two lines so that SCCS will not see the M
+ * between two % signs and expand it...
+ */
+static char fmtstr[] = { "%l:%M" "%P on %A, %d %B %Y" };
+
+void putf(char *cp, char *where)
+{
+#ifdef HAVE_UNAME
+ struct utsname name;
+#endif
+ char *slash;
+ time_t t;
+ char db[100];
+
+ /* if we don't have uname, set these to sensible values */
+ char *sysname = "Unix",
+ *machine = "",
+ *release = "",
+ *version = "";
+
+#ifdef HAVE_UNAME
+ uname(&name);
+ sysname=name.sysname;
+ machine=name.machine;
+ release=name.release;
+ version=name.version;
+#endif
+
+ putlocation = where;
+
+ while (*cp) {
+ 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 's':
+ putstr(sysname);
+ break;
+
+ case 'm':
+ putstr(machine);
+ break;
+
+ case 'r':
+ putstr(release);
+ break;
+
+ case 'v':
+ putstr(version);
+ break;
+
+ case 'd':
+ time(&t);
+ strftime(db, sizeof(db), fmtstr, localtime(&t));
+ putstr(db);
+ break;
+
+ case '%':
+ putchr('%');
+ break;
+ }
+ cp++;
+ }
+}
+
+#ifdef DIAGNOSTICS
+/*
+ * Print telnet options and commands in plain text, if possible.
+ */
+void
+printoption(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(int direction, unsigned char *pointer, int length)
+ /* '<' or '>' */
+ /* where suboption data sits */
+ /* length of suboption data */
+{
+ int i = 0;
+ unsigned char buf[512];
+
+ 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(" %u %u(%u)",
+ pointer[1],
+ pointer[2],
+ (((unsigned int)pointer[1])<<8) + pointer[2]);
+ if (length == 4) {
+ output_data(" ?%d?",
+ pointer[3]);
+ break;
+ }
+ output_data(" %u %u(%u)",
+ pointer[3],
+ pointer[4],
+ (((unsigned int)pointer[3])<<8) + 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];
+ snprintf(tbuf,
+ sizeof(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: {
+ 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("\" VAR " + noquote);
+ noquote = 2;
+ break;
+
+ case NEW_ENV_VALUE:
+ output_data("\" VALUE " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_ESC:
+ output_data("\" ESC " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_USERVAR:
+ output_data("\" 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");
+
+ auth_printsub(&pointer[1], length - 1, 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:
+ i = 2;
+ output_data(" NAME \"%.*s\"",
+ length - 2,
+ pointer);
+ 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]);
+
+ 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 %d", pointer[1]);
+ goto encommon;
+
+ case ENCRYPT_DEC_KEYID:
+ output_data(" DEC_KEYID %d", pointer[1]);
+ goto encommon;
+
+ default:
+ output_data(" %d (unknown)", pointer[1]);
+ encommon:
+ for (i = 2; i < length; i++) {
+ output_data(" %d", pointer[i]);
+ }
+ break;
+ }
+ break;
+#endif
+
+ 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(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((unsigned char)*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 */