Local changes: - Update some local modifications to fix build - Synch config.h with upstream as much as possible Changelog: https://git.tcpdump.org/tcpdump/blob/55bc126b0216cfe409b8d6bd378f65679d136ddf:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/tcpdump-4.99.4.tar.gz Sponsored by: The FreeBSD Foundation
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
/* \summary: Secure Shell (SSH) printer */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include "netdissect-stdinc.h"
|
|
#include "netdissect-ctype.h"
|
|
|
|
#include "netdissect.h"
|
|
#include "extract.h"
|
|
|
|
static int
|
|
ssh_print_version(netdissect_options *ndo, const u_char *pptr, u_int len)
|
|
{
|
|
u_int idx = 0;
|
|
|
|
if ( GET_U_1(pptr+idx) != 'S' )
|
|
return 0;
|
|
idx++;
|
|
if ( GET_U_1(pptr+idx) != 'S' )
|
|
return 0;
|
|
idx++;
|
|
if ( GET_U_1(pptr+idx) != 'H' )
|
|
return 0;
|
|
idx++;
|
|
if ( GET_U_1(pptr+idx) != '-' )
|
|
return 0;
|
|
idx++;
|
|
|
|
while (idx < len) {
|
|
u_char c;
|
|
|
|
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.
|
|
*/
|
|
goto print;
|
|
} else if (c == '\r') {
|
|
/* CR - any LF? */
|
|
if ((idx+1) >= len) {
|
|
/* not in this packet */
|
|
goto trunc;
|
|
}
|
|
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.
|
|
*/
|
|
goto print;
|
|
}
|
|
|
|
/*
|
|
* CR followed by something else; treat this as
|
|
* if it were binary data and don't print it.
|
|
*/
|
|
goto trunc;
|
|
} else if (!ND_ASCII_ISPRINT(c) ) {
|
|
/*
|
|
* Not a printable ASCII character; treat this
|
|
* as if it were binary data and don't print it.
|
|
*/
|
|
goto trunc;
|
|
}
|
|
idx++;
|
|
}
|
|
trunc:
|
|
return -1;
|
|
print:
|
|
ND_PRINT(": ");
|
|
nd_print_protocol_caps(ndo);
|
|
ND_PRINT(": %.*s", (int)idx, pptr);
|
|
return idx;
|
|
}
|
|
|
|
void
|
|
ssh_print(netdissect_options *ndo, const u_char *pptr, u_int len)
|
|
{
|
|
ndo->ndo_protocol = "ssh";
|
|
|
|
ssh_print_version(ndo, pptr, len);
|
|
}
|