X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/ab9f1243f9579f7fe8b6eec6941979d4e1ed2aff..9ebb84d5b7d3ba344584ae2ead7eed413305909b:/print-ascii.c

diff --git a/print-ascii.c b/print-ascii.c
index b2a78a03..1b894850 100644
--- a/print-ascii.c
+++ b/print-ascii.c
@@ -40,81 +40,102 @@
 #include "config.h"
 #endif
 
-#ifdef HAVE_SYS_CDEFS_H
-#include <sys/cdefs.h>
-#endif
-#if 0
 #ifndef lint
-__RCSID("$NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $");
-#endif
+static const char rcsid[] _U_ =
+     "@(#) $Header: /tcpdump/master/tcpdump/print-ascii.c,v 1.16 2004-07-21 22:00:10 guy Exp $";
 #endif
+#include <tcpdump-stdinc.h>
 #include <stdio.h>
-#include <sys/types.h>
-#include <ctype.h>
 
 #include "interface.h"
 
+#define ASCII_LINELENGTH 300
 #define HEXDUMP_BYTES_PER_LINE 16
 #define HEXDUMP_SHORTS_PER_LINE (HEXDUMP_BYTES_PER_LINE / 2)
 #define HEXDUMP_HEXSTUFF_PER_SHORT 5 /* 4 hex digits and a space */
 #define HEXDUMP_HEXSTUFF_PER_LINE \
 		(HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
-     
+
 void
-ascii_print_with_offset(register const u_char *cp, register u_int length,
+ascii_print_with_offset(register const char *ident, register const u_char *cp, register u_int length,
 			register u_int oset)
 {
 	register u_int i;
 	register int s1, s2;
 	register int nshorts;
 	char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp;
-	char asciistuff[HEXDUMP_BYTES_PER_LINE+1], *asp;
+	char asciistuff[ASCII_LINELENGTH+1], *asp;
+	u_int maxlength = (Aflag ? ASCII_LINELENGTH : HEXDUMP_SHORTS_PER_LINE);
 
 	nshorts = length / sizeof(u_short);
 	i = 0;
 	hsp = hexstuff; asp = asciistuff;
+	if (Aflag) *(asp++) = '\n';
 	while (--nshorts >= 0) {
 		s1 = *cp++;
 		s2 = *cp++;
-		(void)sprintf(hsp, " %02x%02x", s1, s2);
-		hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
-		*(asp++) = (isgraph(s1) ? s1 : '.');
-		*(asp++) = (isgraph(s2) ? s2 : '.');
-		if (++i >= HEXDUMP_SHORTS_PER_LINE) {
-		    *hsp = *asp = '\0';
-		    (void)printf("\n0x%04x\t%-*s\t%s",
-				 oset, HEXDUMP_HEXSTUFF_PER_LINE,
-				 hexstuff, asciistuff);
-		    i = 0; hsp = hexstuff; asp = asciistuff;
-		    oset += HEXDUMP_BYTES_PER_LINE;
+		if (Aflag) {
+			i += 2;
+			*(asp++) = (isgraph(s1) ? s1 : (s1 != '\t' && s1 != ' ' && s1 != '\n' && s1 != '\r' ? '.' : s1) );
+			*(asp++) = (isgraph(s2) ? s2 : (s2 != '\t' && s2 != ' ' && s2 != '\n' && s2 != '\r' ? '.' : s2) );
+			if (s1 == '\n' || s2 == '\n') i = maxlength;
+
+		} else {
+			(void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
+			    " %02x%02x", s1, s2);
+			hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
+			*(asp++) = (isgraph(s1) ? s1 : '.');
+			*(asp++) = (isgraph(s2) ? s2 : '.');
+			i++;
+		}
+		if (i >= maxlength) {
+			*hsp = *asp = '\0';
+			if (Aflag) {
+				(void)printf("%s", asciistuff);
+			} else {
+				(void)printf("%s0x%04x: %-*s  %s",
+				    ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
+				    hexstuff, asciistuff);
+			}
+			i = 0; hsp = hexstuff; asp = asciistuff;
+			oset += HEXDUMP_BYTES_PER_LINE;
 		}
 	}
 	if (length & 1) {
 		s1 = *cp++;
-		(void)sprintf(hsp, " %02x", s1);
-		hsp += 3;
-		*(asp++) = (isgraph(s1) ? s1 : '.');
+		if (Aflag) {
+			*(asp++) = (isgraph(s1) ? s1 : (s1 != '\t' && s1 != ' ' && s1 != '\n' && s1 != '\r' ? '.' : s1) );
+		} else {
+			(void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
+			    " %02x", s1);
+			hsp += 3;
+			*(asp++) = (isgraph(s1) ? s1 : '.');
+		}
 		++i;
 	}
 	if (i > 0) {
 		*hsp = *asp = '\0';
-		(void)printf("\n0x%04x\t%-*s\t%s",
-			     oset, HEXDUMP_HEXSTUFF_PER_LINE,
+		if (Aflag) {
+			(void)printf("%s%s", ident, asciistuff);
+		} else {
+			(void)printf("%s0x%04x: %-*s  %s",
+			     ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
 			     hexstuff, asciistuff);
+		}
 	}
 }
 
 void
-ascii_print(register const u_char *cp, register u_int length)
+ascii_print(register const char *ident, register const u_char *cp, register u_int length)
 {
-	ascii_print_with_offset(cp, length, 0);
+	ascii_print_with_offset(ident, cp, length, 0);
 }
-	
+
 /*
  * telnet_print() wants this.  It is essentially default_print_unaligned()
  */
 void
-hex_print_with_offset(register const u_char *cp, register u_int length,
+hex_print_with_offset(register const char *ident, register const u_char *cp, register u_int length,
 		      register u_int oset)
 {
 	register u_int i, s;
@@ -124,7 +145,7 @@ hex_print_with_offset(register const u_char *cp, register u_int length,
 	i = 0;
 	while (--nshorts >= 0) {
 		if ((i++ % 8) == 0) {
-			(void)printf("\n0x%04x\t", oset);
+			(void)printf("%s0x%04x: ", ident, oset);
 			oset += HEXDUMP_BYTES_PER_LINE;
 		}
 		s = *cp++;
@@ -132,7 +153,7 @@ hex_print_with_offset(register const u_char *cp, register u_int length,
 	}
 	if (length & 1) {
 		if ((i % 8) == 0)
-			(void)printf("\n0x%04x\t", oset);
+			(void)printf("%s0x%04x: ", ident, oset);
 		(void)printf(" %02x", *cp);
 	}
 }
@@ -141,9 +162,9 @@ hex_print_with_offset(register const u_char *cp, register u_int length,
  * just for completeness
  */
 void
-hex_print(register const u_char *cp, register u_int length)
+hex_print(register const char *ident, register const u_char *cp, register u_int length)
 {
-	hex_print_with_offset(cp, length, 0);
+	hex_print_with_offset(ident, cp, length, 0);
 }
 
 #ifdef MAIN
@@ -160,3 +181,5 @@ main(int argc, char *argv[])
 	exit(0);
 }
 #endif /* MAIN */
+
+