CHANGES: Add a change backported to 4.99

[tcpdump] / print-ascii.c

diff --git a/print-ascii.c b/print-ascii.c
index c672ca8cdeb3e7af6fd1cfb57e5930da02d6555a..f379c6c43678784a8c1416e875caec247dbad021 100644 (file)
--- a/print-ascii.c
+++ b/print-ascii.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $      */
+/*     $NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $      */

 
 /*-
  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
 
 /*-
  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.


@@ -36,18 +36,18 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
  * POSSIBILITY OF SUCH DAMAGE.
  */
 

-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: ASCII packet dump printer */
+
+#include <config.h>
+
+#include "netdissect-stdinc.h"

 
 

-#ifndef lint
-static const char rcsid[] _U_ =
-     "@(#) $Header: /tcpdump/master/tcpdump/print-ascii.c,v 1.17 2005-07-06 20:53:32 guy Exp $";
-#endif
-#include <tcpdump-stdinc.h>

 #include <stdio.h>
 
 #include <stdio.h>
 

+#include "netdissect-ctype.h"
+

 #include "netdissect.h"
 #include "netdissect.h"

+#include "extract.h"

 
 #define ASCII_LINELENGTH 300
 #define HEXDUMP_BYTES_PER_LINE 16
 
 #define ASCII_LINELENGTH 300
 #define HEXDUMP_BYTES_PER_LINE 16


@@ -57,74 +57,113 @@ static const char rcsid[] _U_ =
                (HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
 
 void
                (HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
 
 void

-ascii_print(register const u_char *cp, register u_int length)
+ascii_print(netdissect_options *ndo,
+            const u_char *cp, u_int length)

 {
 {

-       register int s;
+       u_int caplength;
+       u_char s;
+       int truncated = FALSE;

 
 

-       putchar('\n');
+       ndo->ndo_protocol = "ascii";
+       caplength = ND_BYTES_AVAILABLE_AFTER(cp);
+       if (length > caplength) {
+               length = caplength;
+               truncated = TRUE;
+       }
+       ND_PRINT("\n");

        while (length > 0) {
        while (length > 0) {

-               s = *cp++;
+               s = GET_U_1(cp);
+               cp++;

                length--;
                length--;

-               if (!isgraph(s) &&
-                   (s != '\t' && s != ' ' && s != '\n' && s != '\r'))
-                       putchar('.');
-               else
-                       putchar(s);
+               if (s == '\r') {
+                       /*
+                        * Don't print CRs at the end of the line; they
+                        * don't belong at the ends of lines on UN*X,
+                        * and the standard I/O library will give us one
+                        * on Windows so we don't need to print one
+                        * ourselves.
+                        *
+                        * In the middle of a line, just print a '.'.
+                        */
+                       if (length > 1 && GET_U_1(cp) != '\n')
+                               ND_PRINT(".");
+               } else {
+                       if (!ND_ASCII_ISGRAPH(s) &&
+                           (s != '\t' && s != ' ' && s != '\n'))
+                               ND_PRINT(".");
+                       else
+                               ND_PRINT("%c", s);
+               }

        }
        }

+       if (truncated)
+               nd_trunc_longjmp(ndo);

 }
 
 }
 

-void
-hex_and_ascii_print_with_offset(register const char *ident,
-    register const u_char *cp, register u_int length, register u_int oset)
+static void
+hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *ident,
+    const u_char *cp, u_int length, u_int oset)

 {
 {

-       register u_int i;
-       register int s1, s2;
-       register int nshorts;
+       u_int caplength;
+       u_int i;
+       u_int s1, s2;
+       u_int nshorts;
+       int truncated = FALSE;

        char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp;
        char asciistuff[ASCII_LINELENGTH+1], *asp;
 
        char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp;
        char asciistuff[ASCII_LINELENGTH+1], *asp;
 

+       caplength = ND_BYTES_AVAILABLE_AFTER(cp);
+       if (length > caplength) {
+               length = caplength;
+               truncated = TRUE;
+       }

        nshorts = length / sizeof(u_short);
        i = 0;
        hsp = hexstuff; asp = asciistuff;
        nshorts = length / sizeof(u_short);
        i = 0;
        hsp = hexstuff; asp = asciistuff;

-       while (--nshorts >= 0) {
-               s1 = *cp++;
-               s2 = *cp++;
+       while (nshorts != 0) {
+               s1 = GET_U_1(cp);
+               cp++;
+               s2 = GET_U_1(cp);
+               cp++;

                (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x%02x", s1, s2);
                hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
                (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x%02x", s1, s2);
                hsp += HEXDUMP_HEXSTUFF_PER_SHORT;

-               *(asp++) = (isgraph(s1) ? s1 : '.');
-               *(asp++) = (isgraph(s2) ? s2 : '.');
+               *(asp++) = (char)(ND_ASCII_ISGRAPH(s1) ? s1 : '.');
+               *(asp++) = (char)(ND_ASCII_ISGRAPH(s2) ? s2 : '.');

                i++;
                if (i >= HEXDUMP_SHORTS_PER_LINE) {
                        *hsp = *asp = '\0';
                i++;
                if (i >= HEXDUMP_SHORTS_PER_LINE) {
                        *hsp = *asp = '\0';

-                       (void)printf("%s0x%04x: %-*s  %s",
+                       ND_PRINT("%s0x%04x: %-*s  %s",

                            ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
                            hexstuff, asciistuff);
                        i = 0; hsp = hexstuff; asp = asciistuff;
                        oset += HEXDUMP_BYTES_PER_LINE;
                }
                            ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
                            hexstuff, asciistuff);
                        i = 0; hsp = hexstuff; asp = asciistuff;
                        oset += HEXDUMP_BYTES_PER_LINE;
                }

+               nshorts--;

        }
        if (length & 1) {
        }
        if (length & 1) {

-               s1 = *cp++;
+               s1 = GET_U_1(cp);
+               cp++;

                (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x", s1);
                hsp += 3;
                (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x", s1);
                hsp += 3;

-               *(asp++) = (isgraph(s1) ? s1 : '.');
+               *(asp++) = (char)(ND_ASCII_ISGRAPH(s1) ? s1 : '.');

                ++i;
        }
        if (i > 0) {
                *hsp = *asp = '\0';
                ++i;
        }
        if (i > 0) {
                *hsp = *asp = '\0';

-               (void)printf("%s0x%04x: %-*s  %s",
+               ND_PRINT("%s0x%04x: %-*s  %s",

                     ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
                     hexstuff, asciistuff);
        }
                     ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
                     hexstuff, asciistuff);
        }

+       if (truncated)
+               nd_trunc_longjmp(ndo);

 }
 
 void
 }
 
 void

-hex_and_ascii_print(register const char *ident, register const u_char *cp,
-    register u_int length)
+hex_and_ascii_print(netdissect_options *ndo, const char *ident,
+    const u_char *cp, u_int length)

 {
 {

-       hex_and_ascii_print_with_offset(ident, cp, length, 0);
+       hex_and_ascii_print_with_offset(ndo, ident, cp, length, 0);

 }
 
 /*
 }
 
 /*


@@ -135,33 +174,43 @@ hex_print_with_offset(netdissect_options *ndo,
                       const char *ident, const u_char *cp, u_int length,
                      u_int oset)
 {
                       const char *ident, const u_char *cp, u_int length,
                      u_int oset)
 {

-       register u_int i, s;
-       register int nshorts;
+       u_int caplength;
+       u_int i, s;
+       u_int nshorts;
+       int truncated = FALSE;

 
 

-       nshorts = (u_int) length / sizeof(u_short);
+       caplength = ND_BYTES_AVAILABLE_AFTER(cp);
+       if (length > caplength) {
+               length = caplength;
+               truncated = TRUE;
+       }
+       nshorts = length / sizeof(u_short);

        i = 0;
        i = 0;

-       while (--nshorts >= 0) {
+       while (nshorts != 0) {

                if ((i++ % 8) == 0) {
                if ((i++ % 8) == 0) {

-                  (void)ND_PRINT((ndo,"%s0x%04x: ", ident, oset));
-                  oset += HEXDUMP_BYTES_PER_LINE;
+                       ND_PRINT("%s0x%04x: ", ident, oset);
+                       oset += HEXDUMP_BYTES_PER_LINE;

                }
                }

-               s = *cp++;
-               (void)ND_PRINT((ndo," %02x%02x", s, *cp++));
+               s = GET_U_1(cp);
+               cp++;
+               ND_PRINT(" %02x%02x", s, GET_U_1(cp));
+               cp++;
+               nshorts--;

        }
        if (length & 1) {
                if ((i % 8) == 0)
        }
        if (length & 1) {
                if ((i % 8) == 0)

-                  (void)ND_PRINT((ndo,"%s0x%04x: ", ident, oset));
-               (void)ND_PRINT((ndo," %02x", *cp));
+                       ND_PRINT("%s0x%04x: ", ident, oset);
+               ND_PRINT(" %02x", GET_U_1(cp));

        }
        }

+       if (truncated)
+               nd_trunc_longjmp(ndo);

 }
 
 }
 

-/*
- * just for completeness
- */

 void
 void

-hex_print(netdissect_options *ndo,const char *ident, const u_char *cp, u_int length)
+hex_print(netdissect_options *ndo,
+         const char *ident, const u_char *cp, u_int length)

 {
 {

-  hex_print_with_offset(ndo, ident, cp, length, 0);
+       hex_print_with_offset(ndo, ident, cp, length, 0);

 }
 
 #ifdef MAIN
 }
 
 #ifdef MAIN