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)
{
u_int caplength;
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[ASCII_LINELENGTH+1], *asp;
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) {
s1 = *cp++;
s2 = *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 : '.');
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));
i = 0; hsp = hexstuff; asp = asciistuff;
oset += HEXDUMP_BYTES_PER_LINE;
}
}
if (length & 1) {
s1 = *cp++;
(void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
" %02x", s1);
hsp += 3;
*(asp++) = (ND_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));
}
}
void
ascii_print(netdissect_options *ndo,
const u_char *cp, u_int length)
{
u_int caplength;
register u_char s;
caplength = (ndo->ndo_snapend >= cp) ? ndo->ndo_snapend - cp : 0;
if (length > caplength)
length = caplength;
ND_PRINT((ndo, "\n"));
while (length > 0) {
s = *cp++;
length--;
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 && *cp != '\n')
ND_PRINT((ndo, "."));
} else {
if (!ND_ISGRAPH(s) &&
(s != '\t' && s != ' ' && s != '\n'))
ND_PRINT((ndo, "."));
else
ND_PRINT((ndo, "%c", s));
}
}
}
void
ascii_print(netdissect_options *ndo,
const u_char *cp, u_int length)
{
register u_char s;
printf("\n");
while (length > 0) {
s = *cp++;
length--;
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 && *cp != '\n')
printf(".");
} else {
if (!ND_ISGRAPH(s) &&
(s != '\t' && s != ' ' && s != '\n'))
printf(".");
else
printf("%c", s);
}
}
}
