Virgin import of tcpdump.org tcpdump v3.5

1 files changed, 191 insertions, 0 deletions

diff --git a/contrib/tcpdump/print-telnet.c b/contrib/tcpdump/print-telnet.c
new file mode 100644
index 0000000..bb0f4ab
--- /dev/null
+++ b/contrib/tcpdump/print-telnet.c
@@ -0,0 +1,191 @@
+/*	$NetBSD: print-telnet.c,v 1.2 1999/10/11 12:40:12 sjg Exp $ 	*/
+
+/*-
+ * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Simon J. Gerraty.
+ *
+ * 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 NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+/*
+ *      @(#)Copyright (c) 1994, Simon J. Gerraty.
+ *      
+ *      This is free software.  It comes with NO WARRANTY.
+ *      Permission to use, modify and distribute this source code 
+ *      is granted subject to the following conditions.
+ *      1/ that the above copyright notice and this notice 
+ *      are preserved in all copies.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef lint
+static const char rcsid[] =
+     "@(#) $Header: /tcpdump/master/tcpdump/print-telnet.c,v 1.2.2.2 2000/01/11 06:58:28 fenner Exp $";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet/tcp.h>
+#include <netinet/tcpip.h>
+
+#define TELCMDS
+#define TELOPTS
+#include <arpa/telnet.h>
+
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#include <unistd.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+
+#ifndef TELCMD_FIRST
+# define TELCMD_FIRST SE
+#endif
+
+void
+telnet_print(register const u_char *sp, u_int length)
+{
+	static char tnet[128];
+	register int i, c, x;
+	register u_char *rcp;
+	int off, first = 1;
+	u_char	*osp;
+
+	off = 0;
+	x = 0;
+	
+	while (length > 0 && *sp == IAC) {
+		osp = (u_char *) sp;
+		tnet[0] = '\0';
+		
+		c = *sp++;
+		length--;
+		switch (*sp) {
+		case IAC:			/* <IAC><IAC>! */
+			if (length > 1 && sp[1] == IAC) {
+				(void)strcpy(tnet, "IAC IAC");
+			} else {
+				length = 0;
+				continue;
+			}
+			break;
+		default:
+			c = *sp++;
+			length--;
+			if ((i = c - TELCMD_FIRST) < 0
+			    || i > IAC - TELCMD_FIRST) {
+				(void)printf("unknown: ff%02x\n", c);
+				return;
+			}
+			switch (c) {
+			case DONT:
+			case DO:
+			case WONT:
+			case WILL:
+			case SB:
+				x = *sp++; /* option */
+				length--;
+				if (x >= 0 && x < NTELOPTS) {
+					(void)sprintf(tnet, "%s %s",
+						      telcmds[i], telopts[x]);
+				} else {
+					(void)sprintf(tnet, "%s %#x",
+						      telcmds[i], x);
+				}
+				break;
+			default:
+				(void)strcpy(tnet, telcmds[i]);
+			}
+			if (c == SB) {
+				c = *sp++;
+				length--;
+				(void)strcat(tnet, c ? " SEND" : " IS '");
+				rcp = (u_char *) sp;
+				i = strlen(tnet);
+				while (length > 0 && (x = *sp++) != IAC)
+					--length;
+				if (x == IAC) {
+					if (2 < vflag
+					    && i + 16 + sp - rcp < sizeof(tnet)) {
+						(void)strncpy(&tnet[i], rcp, sp - rcp);
+						i += (sp - rcp) - 1;
+						tnet[i] = '\0';
+					} else if (i + 8 < sizeof(tnet)) {
+						(void)strcat(&tnet[i], "...");
+					}
+					if (*sp++ == SE
+					    && i + 4 < sizeof(tnet))
+						(void)strcat(tnet, c ? " SE" : "' SE");
+				} else if (i + 16 < sizeof(tnet)) {
+					(void)strcat(tnet, " truncated!");
+				}
+			}
+			break;
+		}
+		/*
+		 * now print it
+		 */
+		if (Xflag && 2 < vflag) {
+			if (first)
+				printf("\nTelnet:\n");
+			i = sp - osp;
+			hex_print_with_offset(osp, i, off);
+			off += i;
+			if (i > 8)
+				printf("\n\t\t\t\t%s", tnet);
+			else
+				printf("%*s\t%s", (8 - i) * 3, "", tnet);
+		} else {
+			printf("%s%s", (first) ? " [telnet " : ", ", tnet);
+		}
+		first = 0;
+	}
+	if (!first) {
+		if (Xflag && 2 < vflag)
+			printf("\n");
+		else
+			printf("]");
+	}
+}