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authorTheo de Raadt <deraadt@cvs.openbsd.org>1995-10-18 08:53:40 +0000
committerTheo de Raadt <deraadt@cvs.openbsd.org>1995-10-18 08:53:40 +0000
commitd6583bb2a13f329cf0332ef2570eb8bb8fc0e39c (patch)
treeece253b876159b39c620e62b6c9b1174642e070e /usr.sbin/tcpdump/print-tftp.c
initial import of NetBSD tree
Diffstat (limited to 'usr.sbin/tcpdump/print-tftp.c')
-rw-r--r--usr.sbin/tcpdump/print-tftp.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/usr.sbin/tcpdump/print-tftp.c b/usr.sbin/tcpdump/print-tftp.c
new file mode 100644
index 00000000000..a1938321728
--- /dev/null
+++ b/usr.sbin/tcpdump/print-tftp.c
@@ -0,0 +1,147 @@
+/* $NetBSD: print-tftp.c,v 1.2 1995/03/06 19:11:35 mycroft Exp $ */
+
+/*
+ * Copyright (c) 1990, 1991, 1993, 1994
+ * 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: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Format and print trivial file transfer protocol packets.
+ */
+
+#ifndef lint
+static char rcsid[] =
+ "@(#) Header: print-tftp.c,v 1.20 94/06/14 20:18:49 leres Exp (LBL)";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include <netinet/in.h>
+
+#include <arpa/tftp.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+/* op code to string mapping */
+static struct token op2str[] = {
+ { RRQ, "RRQ" }, /* read request */
+ { WRQ, "WRQ" }, /* write request */
+ { DATA, "DATA" }, /* data packet */
+ { ACK, "ACK" }, /* acknowledgement */
+ { ERROR, "ERROR" }, /* error code */
+ { 0, NULL }
+};
+
+/* error code to string mapping */
+static struct token err2str[] = {
+ { EUNDEF, "EUNDEF" }, /* not defined */
+ { ENOTFOUND, "ENOTFOUND" }, /* file not found */
+ { EACCESS, "EACCESS" }, /* access violation */
+ { ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */
+ { EBADOP, "EBADOP" }, /* illegal TFTP operation */
+ { EBADID, "EBADID" }, /* unknown transfer ID */
+ { EEXISTS, "EEXISTS" }, /* file already exists */
+ { ENOUSER, "ENOUSER" }, /* no such user */
+ { 0, NULL }
+};
+
+/*
+ * Print trivial file transfer program requests
+ */
+void
+tftp_print(register const u_char *bp, int length)
+{
+ register const struct tftphdr *tp;
+ register const char *cp;
+ register const u_char *ep, *p;
+ register int opcode;
+#define TCHECK(var, l) if ((u_char *)&(var) > ep - l) goto trunc
+ static char tstr[] = " [|tftp]";
+
+ tp = (const struct tftphdr *)bp;
+ /* 'ep' points to the end of avaible data. */
+ ep = snapend;
+
+ /* Print length */
+ printf(" %d", length);
+
+ /* Print tftp request type */
+ TCHECK(tp->th_opcode, sizeof(tp->th_opcode));
+ opcode = ntohs(tp->th_opcode);
+ cp = tok2str(op2str, "tftp-#%d", opcode);
+ printf(" %s", cp);
+ /* Bail if bogus opcode */
+ if (*cp == 't')
+ return;
+
+ switch (opcode) {
+
+ case RRQ:
+ case WRQ:
+ putchar(' ');
+ /*
+ * XXX Not all arpa/tftp.h's specify th_stuff as any
+ * array; use address of th_block instead
+ */
+#ifdef notdef
+ p = (u_char *)tp->th_stuff;
+#else
+ p = (u_char *)&tp->th_block;
+#endif
+ if (fn_print(p, ep)) {
+ fputs(&tstr[1], stdout);
+ return;
+ }
+ break;
+
+ case DATA:
+ TCHECK(tp->th_block, sizeof(tp->th_block));
+ printf(" block %d", ntohs(tp->th_block));
+ break;
+
+ case ACK:
+ break;
+
+ case ERROR:
+ /* Print error code string */
+ TCHECK(tp->th_code, sizeof(tp->th_code));
+ printf(" %s ", tok2str(err2str, "tftp-err-#%d",
+ ntohs(tp->th_code)));
+ /* Print error message string */
+ if (fn_print((const u_char *)tp->th_data, ep)) {
+ fputs(&tstr[1], stdout);
+ return;
+ }
+ break;
+
+ default:
+ /* We shouldn't get here */
+ printf("(unknown #%d)", opcode);
+ break;
+ }
+ return;
+trunc:
+ fputs(tstr, stdout);
+#undef TCHECK
+}