-/* $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.
* POSSIBILITY OF SUCH DAMAGE.
*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: ASCII packet dump printer */
+
+#include <config.h>
+
+#include "netdissect-stdinc.h"
-#include <tcpdump-stdinc.h>
#include <stdio.h>
+#include "netdissect-ctype.h"
+
#include "netdissect.h"
-#include "interface.h"
+#include "extract.h"
#define ASCII_LINELENGTH 300
#define HEXDUMP_BYTES_PER_LINE 16
(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');
- while (length > 0) {
- s = *cp++;
+ ndo->ndo_protocol = "ascii";
+ caplength = ND_BYTES_AVAILABLE_AFTER(cp);
+ if (length > caplength) {
+ length = caplength;
+ truncated = TRUE;
+ }
+ ND_PRINT("\n");
+ while (length != 0) {
+ s = GET_U_1(cp);
+ cp++;
length--;
if (s == '\r') {
/*
*
* In the middle of a line, just print a '.'.
*/
- if (length > 1 && *cp != '\n')
- putchar('.');
+ if (length > 1 && GET_U_1(cp) != '\n')
+ ND_PRINT(".");
} else {
- if (!ND_ISGRAPH(s) &&
+ if (!ND_ASCII_ISGRAPH(s) &&
(s != '\t' && s != ' ' && s != '\n'))
- putchar('.');
+ ND_PRINT(".");
else
- putchar(s);
+ ND_PRINT("%c", s);
}
}
+ if (truncated)
+ nd_trunc_longjmp(ndo);
}
-void
-hex_and_ascii_print_with_offset(netdissect_options *ndo, 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 *indent,
+ const u_char *cp, u_int length, u_int offset)
{
- 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;
+ caplength = ND_BYTES_AVAILABLE_AFTER(cp);
+ if (length > caplength) {
+ length = caplength;
+ truncated = TRUE;
+ }
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;
- *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.');
- *(asp++) = (ND_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';
- ND_PRINT((ndo, "%s0x%04x: %-*s %s",
- ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
- hexstuff, asciistuff));
+ ND_PRINT("%s0x%04x: %-*s %s",
+ indent, offset, HEXDUMP_HEXSTUFF_PER_LINE,
+ hexstuff, asciistuff);
i = 0; hsp = hexstuff; asp = asciistuff;
- oset += HEXDUMP_BYTES_PER_LINE;
+ offset += HEXDUMP_BYTES_PER_LINE;
}
+ nshorts--;
}
if (length & 1) {
- s1 = *cp++;
+ s1 = GET_U_1(cp);
+ cp++;
(void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
" %02x", s1);
hsp += 3;
- *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.');
+ *(asp++) = (char)(ND_ASCII_ISGRAPH(s1) ? s1 : '.');
++i;
}
if (i > 0) {
*hsp = *asp = '\0';
- ND_PRINT((ndo, "%s0x%04x: %-*s %s",
- ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
- hexstuff, asciistuff));
+ ND_PRINT("%s0x%04x: %-*s %s",
+ indent, offset, HEXDUMP_HEXSTUFF_PER_LINE,
+ hexstuff, asciistuff);
}
+ if (truncated)
+ nd_trunc_longjmp(ndo);
}
void
-hex_and_ascii_print(netdissect_options *ndo, register const char *ident,
- register const u_char *cp, register u_int length)
+hex_and_ascii_print(netdissect_options *ndo, const char *indent,
+ const u_char *cp, u_int length)
{
- hex_and_ascii_print_with_offset(ndo, ident, cp, length, 0);
+ hex_and_ascii_print_with_offset(ndo, indent, cp, length, 0);
}
/*
*/
void
hex_print_with_offset(netdissect_options *ndo,
- const char *ident, const u_char *cp, u_int length,
- u_int oset)
+ const char *indent, const u_char *cp, u_int length,
+ u_int offset)
{
- 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;
- while (--nshorts >= 0) {
+ while (nshorts != 0) {
if ((i++ % 8) == 0) {
- (void)ND_PRINT((ndo,"%s0x%04x: ", ident, oset));
- oset += HEXDUMP_BYTES_PER_LINE;
+ ND_PRINT("%s0x%04x: ", indent, offset);
+ offset += 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)
- (void)ND_PRINT((ndo,"%s0x%04x: ", ident, oset));
- (void)ND_PRINT((ndo," %02x", *cp));
+ ND_PRINT("%s0x%04x: ", indent, offset);
+ ND_PRINT(" %02x", GET_U_1(cp));
}
+ if (truncated)
+ nd_trunc_longjmp(ndo);
}
-/*
- * just for completeness
- */
void
-hex_print(netdissect_options *ndo,const char *ident, const u_char *cp, u_int length)
-{
- hex_print_with_offset(ndo, ident, cp, length, 0);
-}
-
-#ifdef MAIN
-int
-main(int argc, char *argv[])
+hex_print(netdissect_options *ndo,
+ const char *indent, const u_char *cp, u_int length)
{
- hex_print("\n\t", "Hello, World!\n", 14);
- printf("\n");
- hex_and_ascii_print("\n\t", "Hello, World!\n", 14);
- printf("\n");
- ascii_print("Hello, World!\n", 14);
- printf("\n");
-#define TMSG "Now is the winter of our discontent...\n"
- hex_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100);
- printf("\n");
- hex_and_ascii_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100);
- printf("\n");
- exit(0);
+ hex_print_with_offset(ndo, indent, cp, length, 0);
}
-#endif /* MAIN */
projects / tcpdump / blobdiff