* Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997

/*
* Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

/*
* txtproto_print() derived from original code by Hannes Gredler
* ([email protected]):
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: util-print.c,v 1.8 2024/09/02 16:15:33 christos Exp $");
#endif

#include <config.h>

#include "netdissect-stdinc.h"

#include <sys/stat.h>

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>

#include "netdissect-ctype.h"

#include "netdissect.h"
#include "extract.h"
#include "ascii_strcasecmp.h"
#include "timeval-operations.h"

#define TOKBUFSIZE 128

enum date_flag { WITHOUT_DATE = 0, WITH_DATE = 1 };
enum time_flag { UTC_TIME = 0, LOCAL_TIME = 1 };

/*
* Print out a character, filtering out the non-printable ones
*/
void
fn_print_char(netdissect_options *ndo, u_char c)
{
if (!ND_ISASCII(c)) {
c = ND_TOASCII(c);
ND_PRINT("M-");
}
if (!ND_ASCII_ISPRINT(c)) {
c ^= 0x40; /* DEL to ?, others to alpha */
ND_PRINT("^");
}
ND_PRINT("%c", c);
}

/*
* Print a null-terminated string, filtering out non-printable characters.
* DON'T USE IT with a pointer on the packet buffer because there is no
* truncation check. For this use, see the nd_printX() functions below.
*/
void
fn_print_str(netdissect_options *ndo, const u_char *s)
{
while (*s != '\0') {
fn_print_char(ndo, *s);
s++;
}
}

/*
* Print out a null-terminated filename (or other ASCII string) from
* a fixed-length field in the packet buffer, or from what remains of
* the packet.
*
* n is the length of the fixed-length field, or the number of bytes
* remaining in the packet based on its on-the-network length.
*
* If ep is non-null, it should point just past the last captured byte
* of the packet, e.g. ndo->ndo_snapend. If ep is NULL, we assume no
* truncation check, other than the checks of the field length/remaining
* packet data length, is needed.
*
* Return the number of bytes of string processed, including the
* terminating null, if not truncated; as the terminating null is
* included in the count, and as there must be a terminating null,
* this will always be non-zero. Return 0 if truncated.
*/
u_int
nd_printztn(netdissect_options *ndo,
const u_char *s, u_int n, const u_char *ep)
{
u_int bytes;
u_char c;

bytes = 0;
for (;;) {
if (n == 0 || (ep != NULL && s >= ep)) {
/*
* Truncated. This includes "no null before we
* got to the end of the fixed-length buffer or
* the end of the packet".
*
* XXX - BOOTP says "null-terminated", which
* means the maximum length of the string, in
* bytes, is 1 less than the size of the buffer,
* as there must always be a terminating null.
*/
bytes = 0;
break;
}

c = GET_U_1(s);
s++;
bytes++;
n--;
if (c == '\0') {
/* End of string */
break;
}
fn_print_char(ndo, c);
}
return(bytes);
}

/*
* Print out a counted filename (or other ASCII string), part of
* the packet buffer.
* If ep is NULL, assume no truncation check is needed.
* Return true if truncated.
* Stop at ep (if given) or after n bytes, whichever is first.
*/
int
nd_printn(netdissect_options *ndo,
const u_char *s, u_int n, const u_char *ep)
{
u_char c;

while (n > 0 && (ep == NULL || s < ep)) {
n--;
c = GET_U_1(s);
s++;
fn_print_char(ndo, c);
}
return (n == 0) ? 0 : 1;
}

/*
* Print a counted filename (or other ASCII string), part of
* the packet buffer, filtering out non-printable characters.
* Stop if truncated (via GET_U_1/longjmp) or after n bytes,
* whichever is first.
* The suffix comes from: j:longJmp, n:after N bytes.
*/
void
nd_printjn(netdissect_options *ndo, const u_char *s, u_int n)
{
while (n > 0) {
fn_print_char(ndo, GET_U_1(s));
n--;
s++;
}
}

/*
* Print a null-padded filename (or other ASCII string), part of
* the packet buffer, filtering out non-printable characters.
* Stop if truncated (via GET_U_1/longjmp) or after n bytes or before
* the null char, whichever occurs first.
* The suffix comes from: j:longJmp, n:after N bytes, p:null-Padded.
*/
void
nd_printjnp(netdissect_options *ndo, const u_char *s, u_int n)
{
u_char c;

while (n > 0) {
c = GET_U_1(s);
if (c == '\0')
break;
fn_print_char(ndo, c);
n--;
s++;
}
}

/*
* Print the timestamp .FRAC part (Microseconds/nanoseconds)
*/
static void
ts_frac_print(netdissect_options *ndo, const struct timeval *tv)
{
#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
switch (ndo->ndo_tstamp_precision) {

case PCAP_TSTAMP_PRECISION_MICRO:
ND_PRINT(".%06u", (unsigned)tv->tv_usec);
break;

case PCAP_TSTAMP_PRECISION_NANO:
ND_PRINT(".%09u", (unsigned)tv->tv_usec);
break;

default:
ND_PRINT(".{unknown}");
break;
}
#else
ND_PRINT(".%06u", (unsigned)tv->tv_usec);
#endif
}

/*
* Print the timestamp as [YY:MM:DD] HH:MM:SS.FRAC.
* if time_flag == LOCAL_TIME print local time else UTC/GMT time
* if date_flag == WITH_DATE print YY:MM:DD before HH:MM:SS.FRAC
*/
static void
ts_date_hmsfrac_print(netdissect_options *ndo, const struct timeval *tv,
enum date_flag date_flag, enum time_flag time_flag)
{
struct tm *tm;
char timebuf[32];
const char *timestr;

if (tv->tv_sec < 0) {
ND_PRINT("[timestamp < 1970-01-01 00:00:00 UTC]");
return;
}

if (time_flag == LOCAL_TIME)
tm = localtime(&tv->tv_sec);
else
tm = gmtime(&tv->tv_sec);

if (date_flag == WITH_DATE) {
timestr = nd_format_time(timebuf, sizeof(timebuf),
"%Y-%m-%d %H:%M:%S", tm);
} else {
timestr = nd_format_time(timebuf, sizeof(timebuf),
"%H:%M:%S", tm);
}
ND_PRINT("%s", timestr);

ts_frac_print(ndo, tv);
}

/*
* Print the timestamp - Unix timeval style, as SECS.FRAC.
*/
static void
ts_unix_print(netdissect_options *ndo, const struct timeval *tv)
{
if (tv->tv_sec < 0) {
ND_PRINT("[timestamp < 1970-01-01 00:00:00 UTC]");
return;
}

ND_PRINT("%u", (unsigned)tv->tv_sec);
ts_frac_print(ndo, tv);
}

/*
* Print the timestamp
*/
void
ts_print(netdissect_options *ndo,
const struct timeval *tvp)
{
static struct timeval tv_ref;
struct timeval tv_result;
int negative_offset;
int nano_prec;

switch (ndo->ndo_tflag) {

case 0: /* Default */
ts_date_hmsfrac_print(ndo, tvp, WITHOUT_DATE, LOCAL_TIME);
ND_PRINT(" ");
break;

case 1: /* No time stamp */
break;

case 2: /* Unix timeval style */
ts_unix_print(ndo, tvp);
ND_PRINT(" ");
break;

case 3: /* Microseconds/nanoseconds since previous packet */
case 5: /* Microseconds/nanoseconds since first packet */
#ifdef HAVE_PCAP_SET_TSTAMP_PRECISION
switch (ndo->ndo_tstamp_precision) {
case PCAP_TSTAMP_PRECISION_MICRO:
nano_prec = 0;
break;
case PCAP_TSTAMP_PRECISION_NANO:
nano_prec = 1;
break;
default:
nano_prec = 0;
break;
}
#else
nano_prec = 0;
#endif
if (!(netdissect_timevalisset(&tv_ref)))
tv_ref = *tvp; /* set timestamp for first packet */

negative_offset = netdissect_timevalcmp(tvp, &tv_ref, <);
if (negative_offset)
netdissect_timevalsub(&tv_ref, tvp, &tv_result, nano_prec);
else
netdissect_timevalsub(tvp, &tv_ref, &tv_result, nano_prec);

ND_PRINT((negative_offset ? "-" : " "));
ts_date_hmsfrac_print(ndo, &tv_result, WITHOUT_DATE, UTC_TIME);
ND_PRINT(" ");

if (ndo->ndo_tflag == 3)
tv_ref = *tvp; /* set timestamp for previous packet */
break;

case 4: /* Date + Default */
ts_date_hmsfrac_print(ndo, tvp, WITH_DATE, LOCAL_TIME);
ND_PRINT(" ");
break;
}
}

/*
* Print an unsigned relative number of seconds (e.g. hold time, prune timer)
* in the form 5m1s. This does no truncation, so 32230861 seconds
* is represented as 1y1w1d1h1m1s.
*/
void
unsigned_relts_print(netdissect_options *ndo,
uint32_t secs)
{
static const char *lengths[] = {"y", "w", "d", "h", "m", "s"};
static const u_int seconds[] = {31536000, 604800, 86400, 3600, 60, 1};
const char **l = lengths;
const u_int *s = seconds;

if (secs == 0) {
ND_PRINT("0s");
return;
}
while (secs > 0) {
if (secs >= *s) {
ND_PRINT("%u%s", secs / *s, *l);
secs -= (secs / *s) * *s;
}
s++;
l++;
}
}

/*
* Print a signed relative number of seconds (e.g. hold time, prune timer)
* in the form 5m1s. This does no truncation, so 32230861 seconds
* is represented as 1y1w1d1h1m1s.
*/
void
signed_relts_print(netdissect_options *ndo,
int32_t secs)
{
if (secs < 0) {
ND_PRINT("-");
if (secs == INT32_MIN) {
/*
* -2^31; you can't fit its absolute value into
* a 32-bit signed integer.
*
* Just directly pass said absolute value to
* unsigned_relts_print() directly.
*
* (XXX - does ISO C guarantee that -(-2^n),
* when calculated and cast to an n-bit unsigned
* integer type, will have the value 2^n?)
*/
unsigned_relts_print(ndo, 2147483648U);
} else {
/*
* We now know -secs will fit into an int32_t;
* negate it and pass that to unsigned_relts_print().
*/
unsigned_relts_print(ndo, -secs);
}
return;
}
unsigned_relts_print(ndo, secs);
}

/*
* Format a struct tm with strftime().
* If the pointer to the struct tm is null, that means that the
* routine to convert a time_t to a struct tm failed; the localtime()
* and gmtime() in the Microsoft Visual Studio C library will fail,
* returning null, if the value is before the UNIX Epoch.
*/
const char *
nd_format_time(char *buf, size_t bufsize, const char *format,
const struct tm *timeptr)
{
if (timeptr != NULL) {
if (strftime(buf, bufsize, format, timeptr) != 0)
return (buf);
else
return ("[nd_format_time() buffer is too small]");
} else
return ("[localtime() or gmtime() couldn't convert the date and time]");
}

/* Print the truncated string */
void nd_print_trunc(netdissect_options *ndo)
{
ND_PRINT(" [|%s]", ndo->ndo_protocol);
}

/* Print the protocol name */
void nd_print_protocol(netdissect_options *ndo)
{
ND_PRINT("%s", ndo->ndo_protocol);
}

/* Print the protocol name in caps (uppercases) */
void nd_print_protocol_caps(netdissect_options *ndo)
{
const char *p;
for (p = ndo->ndo_protocol; *p != '\0'; p++)
ND_PRINT("%c", ND_ASCII_TOUPPER(*p));
}

/* Print the invalid string */
void nd_print_invalid(netdissect_options *ndo)
{
ND_PRINT(" (invalid)");
}

/*
* this is a generic routine for printing unknown data;
* we pass on the linefeed plus indentation string to
* get a proper output - returns 0 on error
*/

int
print_unknown_data(netdissect_options *ndo, const u_char *cp,
const char *ident, u_int len)
{
u_int len_to_print;

len_to_print = len;
if (!ND_TTEST_LEN(cp, 0)) {
ND_PRINT("%sDissector error: print_unknown_data called with pointer past end of packet",
ident);
return(0);
}
if (ND_BYTES_AVAILABLE_AFTER(cp) < len_to_print)
len_to_print = ND_BYTES_AVAILABLE_AFTER(cp);
hex_print(ndo, ident, cp, len_to_print);
return(1); /* everything is ok */
}

/*
* Convert a token value to a string; use "fmt" if not found.
*/
static const char *
tok2strbuf(const struct tok *lp, const char *fmt,
u_int v, char *buf, size_t bufsize)
{
if (lp != NULL) {
while (lp->s != NULL) {
if (lp->v == v)
return (lp->s);
++lp;
}
}
if (fmt == NULL)
fmt = "#%d";

(void)snprintf(buf, bufsize, fmt, v);
return (const char *)buf;
}

/*
* Convert a token value to a string; use "fmt" if not found.
* Uses tok2strbuf() on one of four local static buffers of size TOKBUFSIZE
* in round-robin fashion.
*/
const char *
tok2str(const struct tok *lp, const char *fmt,
u_int v)
{
static char buf[4][TOKBUFSIZE];
static int idx = 0;
char *ret;

ret = buf[idx];
idx = (idx+1) & 3;
return tok2strbuf(lp, fmt, v, ret, sizeof(buf[0]));
}

/*
* Convert a bit token value to a string; use "fmt" if not found.
* this is useful for parsing bitfields, the output strings are separated
* if the s field is positive.
*
* A token matches iff it has one or more bits set and every bit that is set
* in the token is set in v. Consequently, a 0 token never matches.
*/
static char *
bittok2str_internal(const struct tok *lp, const char *fmt,
u_int v, const char *sep)
{
static char buf[1024+1]; /* our string buffer */
char *bufp = buf;
size_t space_left = sizeof(buf), string_size;
const char * sepstr = "";

while (lp != NULL && lp->s != NULL) {
if (lp->v && (v & lp->v) == lp->v) {
/* ok we have found something */
if (space_left <= 1)
return (buf); /* only enough room left for NUL, if that */
string_size = strlcpy(bufp, sepstr, space_left);
if (string_size >= space_left)
return (buf); /* we ran out of room */
bufp += string_size;
space_left -= string_size;
if (space_left <= 1)
return (buf); /* only enough room left for NUL, if that */
string_size = strlcpy(bufp, lp->s, space_left);
if (string_size >= space_left)
return (buf); /* we ran out of room */
bufp += string_size;
space_left -= string_size;
sepstr = sep;
}
lp++;
}

if (bufp == buf)
/* bummer - lets print the "unknown" message as advised in the fmt string if we got one */
(void)snprintf(buf, sizeof(buf), fmt == NULL ? "#%08x" : fmt, v);
return (buf);
}

/*
* Convert a bit token value to a string; use "fmt" if not found.
* this is useful for parsing bitfields, the output strings are not separated.
*/
char *
bittok2str_nosep(const struct tok *lp, const char *fmt,
u_int v)
{
return (bittok2str_internal(lp, fmt, v, ""));
}

/*
* Convert a bit token value to a string; use "fmt" if not found.
* this is useful for parsing bitfields, the output strings are comma separated.
*/
char *
bittok2str(const struct tok *lp, const char *fmt,
u_int v)
{
return (bittok2str_internal(lp, fmt, v, ", "));
}

/*
* Convert a value to a string using an array; the macro
* tok2strary() in <netdissect.h> is the public interface to
* this function and ensures that the second argument is
* correct for bounds-checking.
*/
const char *
tok2strary_internal(const char **lp, int n, const char *fmt,
int v)
{
static char buf[TOKBUFSIZE];

if (v >= 0 && v < n && lp[v] != NULL)
return lp[v];
if (fmt == NULL)
fmt = "#%d";
(void)snprintf(buf, sizeof(buf), fmt, v);
return (buf);
}

const struct tok *
uint2tokary_internal(const struct uint_tokary dict[], const size_t size,
const u_int val)
{
size_t i;
/* Try a direct lookup before the full scan. */
if (val < size && dict[val].uintval == val)
return dict[val].tokary; /* OK if NULL */
for (i = 0; i < size; i++)
if (dict[i].uintval == val)
return dict[i].tokary; /* OK if NULL */
return NULL;
}

/*
* Convert a 32-bit netmask to prefixlen if possible
* the function returns the prefix-len; if plen == -1
* then conversion was not possible;
*/

int
mask2plen(uint32_t mask)
{
const uint32_t bitmasks[33] = {
0x00000000,
0x80000000, 0xc0000000, 0xe0000000, 0xf0000000,
0xf8000000, 0xfc000000, 0xfe000000, 0xff000000,
0xff800000, 0xffc00000, 0xffe00000, 0xfff00000,
0xfff80000, 0xfffc0000, 0xfffe0000, 0xffff0000,
0xffff8000, 0xffffc000, 0xffffe000, 0xfffff000,
0xfffff800, 0xfffffc00, 0xfffffe00, 0xffffff00,
0xffffff80, 0xffffffc0, 0xffffffe0, 0xfffffff0,
0xfffffff8, 0xfffffffc, 0xfffffffe, 0xffffffff
};
int prefix_len = 32;

/* let's see if we can transform the mask into a prefixlen */
while (prefix_len >= 0) {
if (bitmasks[prefix_len] == mask)
break;
prefix_len--;
}
return (prefix_len);
}

int
mask62plen(const u_char *mask)
{
u_char bitmasks[9] = {
0x00,
0x80, 0xc0, 0xe0, 0xf0,
0xf8, 0xfc, 0xfe, 0xff
};
int byte;
int cidr_len = 0;

for (byte = 0; byte < 16; byte++) {
u_int bits;

for (bits = 0; bits < (sizeof (bitmasks) / sizeof (bitmasks[0])); bits++) {
if (mask[byte] == bitmasks[bits]) {
cidr_len += bits;
break;
}
}

if (mask[byte] != 0xff)
break;
}
return (cidr_len);
}

/*
* Routine to print out information for text-based protocols such as FTP,
* HTTP, SMTP, RTSP, SIP, ....
*/
#define MAX_TOKEN 128

/*
* Fetch a token from a packet, starting at the specified index,
* and return the length of the token.
*
* Returns 0 on error; yes, this is indistinguishable from an empty
* token, but an "empty token" isn't a valid token - it just means
* either a space character at the beginning of the line (this
* includes a blank line) or no more tokens remaining on the line.
*/
static int
fetch_token(netdissect_options *ndo, const u_char *pptr, u_int idx, u_int len,
u_char *tbuf, size_t tbuflen)
{
size_t toklen = 0;
u_char c;

for (; idx < len; idx++) {
if (!ND_TTEST_1(pptr + idx)) {
/* ran past end of captured data */
return (0);
}
c = GET_U_1(pptr + idx);
if (!ND_ISASCII(c)) {
/* not an ASCII character */
return (0);
}
if (c == ' ' || c == '\t' || c == '\r' || c == '\n') {
/* end of token */
break;
}
if (!ND_ASCII_ISPRINT(c)) {
/* not part of a command token or response code */
return (0);
}
if (toklen + 2 > tbuflen) {
/* no room for this character and terminating '\0' */
return (0);
}
tbuf[toklen] = c;
toklen++;
}
if (toklen == 0) {
/* no token */
return (0);
}
tbuf[toklen] = '\0';

/*
* Skip past any white space after the token, until we see
* an end-of-line (CR or LF).
*/
for (; idx < len; idx++) {
if (!ND_TTEST_1(pptr + idx)) {
/* ran past end of captured data */
break;
}
c = GET_U_1(pptr + idx);
if (c == '\r' || c == '\n') {
/* end of line */
break;
}
if (!ND_ASCII_ISPRINT(c)) {
/* not a printable ASCII character */
break;
}
if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {
/* beginning of next token */
break;
}
}
return (idx);
}

/*
* Scan a buffer looking for a line ending - LF or CR-LF.
* Return the index of the character after the line ending or 0 if
* we encounter a non-ASCII or non-printable character or don't find
* the line ending.
*/
static u_int
print_txt_line(netdissect_options *ndo, const char *prefix,
const u_char *pptr, u_int idx, u_int len)
{
u_int startidx;
u_int linelen;
u_char c;

startidx = idx;
while (idx < len) {
c = GET_U_1(pptr + idx);
if (c == '\n') {
/*
* LF without CR; end of line.
* Skip the LF and print the line, with the
* exception of the LF.
*/
linelen = idx - startidx;
idx++;
goto print;
} else if (c == '\r') {
/* CR - any LF? */
if ((idx+1) >= len) {
/* not in this packet */
return (0);
}
if (GET_U_1(pptr + idx + 1) == '\n') {
/*
* CR-LF; end of line.
* Skip the CR-LF and print the line, with
* the exception of the CR-LF.
*/
linelen = idx - startidx;
idx += 2;
goto print;
}

/*
* CR followed by something else; treat this
* as if it were binary data, and don't print
* it.
*/
return (0);
} else if (!ND_ASCII_ISPRINT(c) && c != '\t') {
/*
* Not a printable ASCII character and not a tab;
* treat this as if it were binary data, and
* don't print it.
*/
return (0);
}
idx++;
}

/*
* All printable ASCII, but no line ending after that point
* in the buffer.
*/
linelen = idx - startidx;
ND_PRINT("%s%.*s", prefix, (int)linelen, pptr + startidx);
return (0);

print:
ND_PRINT("%s%.*s", prefix, (int)linelen, pptr + startidx);
return (idx);
}

/* Assign needed before calling txtproto_print(): ndo->ndo_protocol = "proto" */
void
txtproto_print(netdissect_options *ndo, const u_char *pptr, u_int len,
const char **cmds, u_int flags)
{
u_int idx, eol;
u_char token[MAX_TOKEN+1];
const char *cmd;
int print_this = 0;

if (cmds != NULL) {
/*
* This protocol has more than just request and
* response lines; see whether this looks like a
* request or response and, if so, print it and,
* in verbose mode, print everything after it.
*
* This is for HTTP-like protocols, where we
* want to print requests and responses, but
* don't want to print continuations of request
* or response bodies in packets that don't
* contain the request or response line.
*/
idx = fetch_token(ndo, pptr, 0, len, token, sizeof(token));
if (idx != 0) {
/* Is this a valid request name? */
while ((cmd = *cmds++) != NULL) {
if (ascii_strcasecmp((const char *)token, cmd) == 0) {
/* Yes. */
print_this = 1;
break;
}
}

/*
* No - is this a valid response code (3 digits)?
*
* Is this token the response code, or is the next
* token the response code?
*/
if (flags & RESP_CODE_SECOND_TOKEN) {
/*
* Next token - get it.
*/
idx = fetch_token(ndo, pptr, idx, len, token,
sizeof(token));
}
if (idx != 0) {
if (ND_ASCII_ISDIGIT(token[0]) && ND_ASCII_ISDIGIT(token[1]) &&
ND_ASCII_ISDIGIT(token[2]) && token[3] == '\0') {
/* Yes. */
print_this = 1;
}
}
}
} else {
/*
* Either:
*
* 1) This protocol has only request and response lines
* (e.g., FTP, where all the data goes over a different
* connection); assume the payload is a request or
* response.
*
* or
*
* 2) This protocol is just text, so that we should
* always, at minimum, print the first line and,
* in verbose mode, print all lines.
*/
print_this = 1;
}

nd_print_protocol_caps(ndo);

if (print_this) {
/*
* In non-verbose mode, just print the protocol, followed
* by the first line.
*
* In verbose mode, print lines as text until we run out
* of characters or see something that's not a
* printable-ASCII line.
*/
if (ndo->ndo_vflag) {
/*
* We're going to print all the text lines in the
* request or response; just print the length
* on the first line of the output.
*/
ND_PRINT(", length: %u", len);
for (idx = 0;
idx < len && (eol = print_txt_line(ndo, "\n\t", pptr, idx, len)) != 0;
idx = eol)
;
} else {
/*
* Just print the first text line.
*/
print_txt_line(ndo, ": ", pptr, 0, len);
}
}
}

#if (defined(__i386__) || defined(_M_IX86) || defined(__X86__) || defined(__x86_64__) || defined(_M_X64)) || \
(defined(__arm__) || defined(_M_ARM) || defined(__aarch64__)) || \
(defined(__m68k__) && (!defined(__mc68000__) && !defined(__mc68010__))) || \
(defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || defined(_ARCH_PPC64)) || \
(defined(__s390__) || defined(__s390x__) || defined(__zarch__)) || \
defined(__vax__)
/*
* The processor natively handles unaligned loads, so just use memcpy()
* and memcmp(), to enable those optimizations.
*
* XXX - are those all the x86 tests we need?
* XXX - do we need to worry about ARMv1 through ARMv5, which didn't
* support unaligned loads, and, if so, do we need to worry about all
* of them, or just some of them, e.g. ARMv5?
* XXX - are those the only 68k tests we need not to generated
* unaligned accesses if the target is the 68000 or 68010?
* XXX - are there any tests we don't need, because some definitions are for
* compilers that also predefine the GCC symbols?
* XXX - do we need to test for both 32-bit and 64-bit versions of those
* architectures in all cases?
*/
#else
/*
* The processor doesn't natively handle unaligned loads,
* and the compiler might "helpfully" optimize memcpy()
* and memcmp(), when handed pointers that would normally
* be properly aligned, into sequences that assume proper
* alignment.
*
* Do copies and compares of possibly-unaligned data by
* calling routines that wrap memcpy() and memcmp(), to
* prevent that optimization.
*/
void
unaligned_memcpy(void *p, const void *q, size_t l)
{
memcpy(p, q, l);
}

/* As with memcpy(), so with memcmp(). */
int
unaligned_memcmp(const void *p, const void *q, size_t l)
{
return (memcmp(p, q, l));
}
#endif