Merge pull request #703 from nmap/update-gitignore

[tcpdump] / print-ascii.c

diff --git a/print-ascii.c b/print-ascii.c
index 0c347bf08825f33a2f60658bd205a1e82767fa1e..df3f36a1a697bb5984695ab8270c1f3600fe9686 100644 (file)
--- a/print-ascii.c
+++ b/print-ascii.c
@@ -55,6 +55,8 @@
 #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)
@@ -62,7 +64,8 @@ ascii_print(netdissect_options *ndo,
        u_int caplength;
        u_char s;
 
-       caplength = (ndo->ndo_snapend >= cp) ? ndo->ndo_snapend - cp : 0;
+       ndo->ndo_protocol = "ascii";
+       caplength = (ndo->ndo_snapend > cp) ? ndo->ndo_snapend - cp : 0;
        if (length > caplength)
                length = caplength;
        ND_PRINT("\n");
@@ -92,24 +95,24 @@ ascii_print(netdissect_options *ndo,
        }
 }
 
-void
+static void
 hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *ident,
     const u_char *cp, u_int length, u_int oset)
 {
        u_int caplength;
        u_int i;
-       int s1, s2;
-       int nshorts;
+       u_int s1, s2;
+       u_int nshorts;
        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;
+       caplength = (ndo->ndo_snapend > cp) ? ndo->ndo_snapend - cp : 0;
        if (length > caplength)
                length = caplength;
        nshorts = length / sizeof(u_short);
        i = 0;
        hsp = hexstuff; asp = asciistuff;
-       while (--nshorts >= 0) {
+       while (nshorts != 0) {
                s1 = EXTRACT_U_1(cp);
                cp++;
                s2 = EXTRACT_U_1(cp);
@@ -117,8 +120,8 @@ hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *ident,
                (void)nd_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_ISGRAPH(s1) ? s1 : '.');
+               *(asp++) = (char)(ND_ISGRAPH(s2) ? s2 : '.');
                i++;
                if (i >= HEXDUMP_SHORTS_PER_LINE) {
                        *hsp = *asp = '\0';
@@ -128,6 +131,7 @@ hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *ident,
                        i = 0; hsp = hexstuff; asp = asciistuff;
                        oset += HEXDUMP_BYTES_PER_LINE;
                }
+               nshorts--;
        }
        if (length & 1) {
                s1 = EXTRACT_U_1(cp);
@@ -135,7 +139,7 @@ hex_and_ascii_print_with_offset(netdissect_options *ndo, const char *ident,
                (void)nd_snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
                    " %02x", s1);
                hsp += 3;
-               *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.');
+               *(asp++) = (char)(ND_ISGRAPH(s1) ? s1 : '.');
                ++i;
        }
        if (i > 0) {
@@ -163,14 +167,14 @@ hex_print_with_offset(netdissect_options *ndo,
 {
        u_int caplength;
        u_int i, s;
-       int nshorts;
+       u_int nshorts;
 
-       caplength = (ndo->ndo_snapend >= cp) ? ndo->ndo_snapend - cp : 0;
+       caplength = (ndo->ndo_snapend > cp) ? ndo->ndo_snapend - cp : 0;
        if (length > caplength)
                length = caplength;
-       nshorts = (u_int) length / sizeof(u_short);
+       nshorts = length / sizeof(u_short);
        i = 0;
-       while (--nshorts >= 0) {
+       while (nshorts != 0) {
                if ((i++ % 8) == 0) {
                        ND_PRINT("%s0x%04x: ", ident, oset);
                        oset += HEXDUMP_BYTES_PER_LINE;
@@ -179,6 +183,7 @@ hex_print_with_offset(netdissect_options *ndo,
                cp++;
                ND_PRINT(" %02x%02x", s, EXTRACT_U_1(cp));
                cp++;
+               nshorts--;
        }
        if (length & 1) {
                if ((i % 8) == 0)