configure: check for gethostbyaddr(), not gethostbyname().

[tcpdump] / print-ascii.c

diff --git a/print-ascii.c b/print-ascii.c
index df3f36a1a697bb5984695ab8270c1f3600fe9686..64b40424333fe7daefde0a74e33d647ee622cee1 100644 (file)
--- a/print-ascii.c
+++ b/print-ascii.c
@@ -43,8 +43,11 @@
 #endif
 
 #include "netdissect-stdinc.h"
+
 #include <stdio.h>
 
+#include "netdissect-ctype.h"
+
 #include "netdissect.h"
 #include "extract.h"
 
@@ -55,22 +58,23 @@
 #define HEXDUMP_HEXSTUFF_PER_LINE \
                (HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
 
-static void hex_and_ascii_print_with_offset(netdissect_options *, const char *, const u_char *, u_int, u_int);
-
 void
 ascii_print(netdissect_options *ndo,
             const u_char *cp, u_int length)
 {
        u_int caplength;
        u_char s;
+       int truncated = FALSE;
 
        ndo->ndo_protocol = "ascii";
-       caplength = (ndo->ndo_snapend > cp) ? ndo->ndo_snapend - cp : 0;
-       if (length > caplength)
+       caplength = (ndo->ndo_snapend > cp) ? ND_BYTES_AVAILABLE_AFTER(cp) : 0;
+       if (length > caplength) {
                length = caplength;
+               truncated = TRUE;
+       }
        ND_PRINT("\n");
        while (length > 0) {
-               s = EXTRACT_U_1(cp);
+               s = GET_U_1(cp);
                cp++;
                length--;
                if (s == '\r') {
@@ -83,78 +87,85 @@ ascii_print(netdissect_options *ndo,
                         *
                         * In the middle of a line, just print a '.'.
                         */
-                       if (length > 1 && EXTRACT_U_1(cp) != '\n')
+                       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'))
                                ND_PRINT(".");
                        else
                                ND_PRINT("%c", s);
                }
        }
+       if (truncated)
+               nd_trunc_longjmp(ndo);
 }
 
 static void
-hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *ident,
-    const u_char *cp, u_int length, u_int oset)
+hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *indent,
+                               const u_char *cp, u_int length, u_int offset)
 {
        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 = (ndo->ndo_snapend > cp) ? ndo->ndo_snapend - cp : 0;
-       if (length > caplength)
+       caplength = (ndo->ndo_snapend > cp) ? ND_BYTES_AVAILABLE_AFTER(cp) : 0;
+       if (length > caplength) {
                length = caplength;
+               truncated = TRUE;
+       }
        nshorts = length / sizeof(u_short);
        i = 0;
        hsp = hexstuff; asp = asciistuff;
        while (nshorts != 0) {
-               s1 = EXTRACT_U_1(cp);
+               s1 = GET_U_1(cp);
                cp++;
-               s2 = EXTRACT_U_1(cp);
+               s2 = GET_U_1(cp);
                cp++;
-               (void)nd_snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
+               (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x%02x", s1, s2);
                hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
-               *(asp++) = (char)(ND_ISGRAPH(s1) ? s1 : '.');
-               *(asp++) = (char)(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("%s0x%04x: %-*s  %s",
-                           ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
+                           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 = EXTRACT_U_1(cp);
+               s1 = GET_U_1(cp);
                cp++;
-               (void)nd_snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
+               (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x", s1);
                hsp += 3;
-               *(asp++) = (char)(ND_ISGRAPH(s1) ? s1 : '.');
+               *(asp++) = (char)(ND_ASCII_ISGRAPH(s1) ? s1 : '.');
                ++i;
        }
        if (i > 0) {
                *hsp = *asp = '\0';
                ND_PRINT("%s0x%04x: %-*s  %s",
-                    ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
+                    indent, offset, HEXDUMP_HEXSTUFF_PER_LINE,
                     hexstuff, asciistuff);
        }
+       if (truncated)
+               nd_trunc_longjmp(ndo);
 }
 
 void
-hex_and_ascii_print(netdissect_options *ndo, const char *ident,
-    const u_char *cp, 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);
 }
 
 /*
@@ -162,43 +173,46 @@ hex_and_ascii_print(netdissect_options *ndo, const char *ident,
  */
 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)
 {
        u_int caplength;
        u_int i, s;
        u_int nshorts;
+       int truncated = FALSE;
 
-       caplength = (ndo->ndo_snapend > cp) ? ndo->ndo_snapend - cp : 0;
-       if (length > caplength)
+       caplength = (ndo->ndo_snapend > cp) ? ND_BYTES_AVAILABLE_AFTER(cp) : 0;
+       if (length > caplength) {
                length = caplength;
+               truncated = TRUE;
+       }
        nshorts = length / sizeof(u_short);
        i = 0;
        while (nshorts != 0) {
                if ((i++ % 8) == 0) {
-                       ND_PRINT("%s0x%04x: ", ident, oset);
-                       oset += HEXDUMP_BYTES_PER_LINE;
+                       ND_PRINT("%s0x%04x: ", indent, offset);
+                       offset += HEXDUMP_BYTES_PER_LINE;
                }
-               s = EXTRACT_U_1(cp);
+               s = GET_U_1(cp);
                cp++;
-               ND_PRINT(" %02x%02x", s, EXTRACT_U_1(cp));
+               ND_PRINT(" %02x%02x", s, GET_U_1(cp));
                cp++;
                nshorts--;
        }
        if (length & 1) {
                if ((i % 8) == 0)
-                       ND_PRINT("%s0x%04x: ", ident, oset);
-               ND_PRINT(" %02x", EXTRACT_U_1(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(netdissect_options *ndo,
+         const char *indent, const u_char *cp, u_int length)
 {
-  hex_print_with_offset(ndo, ident, cp, length, 0);
+       hex_print_with_offset(ndo, indent, cp, length, 0);
 }
 
 #ifdef MAIN