view libtomcrypt/tests/common.h @ 1715:3974f087d9c0

Disallow leading lines before the ident for server (#102) Per RFC4253 4.2 clients must be able to process other lines of data before the version string, server behavior is not defined neither with MUST/SHOULD nor with MAY. If server process up to 50 lines too - it may cause too long hanging session with invalid/evil client that consume host resources and potentially may lead to DDoS on poor embedded boxes. Let's require first line from client to be version string and fail early if it's not - matches both RFC and real OpenSSH behavior.
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Mon, 15 Jun 2020 18:22:18 +0500
parents e9dba7abd939
children
line wrap: on
line source

/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#ifndef DEMOS_COMMON_H_
#define DEMOS_COMMON_H_

#include <tomcrypt.h>

extern prng_state yarrow_prng;

#ifdef LTC_VERBOSE
#define DO(x) do { fprintf(stderr, "%s:\n", #x); run_cmd((x), __LINE__, __FILE__, #x, NULL); } while (0)
#define DOX(x, str) do { fprintf(stderr, "%s - %s:\n", #x, (str)); run_cmd((x), __LINE__, __FILE__, #x, (str)); } while (0)
#define SHOULD_FAIL(x) do { fprintf(stderr, "%s:\n", #x); run_cmd((x) != CRYPT_OK ? CRYPT_OK : CRYPT_FAIL_TESTVECTOR, __LINE__, __FILE__, #x, NULL); } while (0)
#else
#define DO(x) do { run_cmd((x), __LINE__, __FILE__, #x, NULL); } while (0)
#define DOX(x, str) do { run_cmd((x), __LINE__, __FILE__, #x, (str)); } while (0)
#define SHOULD_FAIL(x) do { run_cmd((x) != CRYPT_OK ? CRYPT_OK : CRYPT_FAIL_TESTVECTOR, __LINE__, __FILE__, #x, NULL); } while (0)
#endif

void run_cmd(int res, int line, const char *file, const char *cmd, const char *algorithm);

void print_hex(const char* what, const void* v, const unsigned long l);

#endif /* DEMOS_COMMON_H_ */

/* ref:         $Format:%D$ */
/* git commit:  $Format:%H$ */
/* commit time: $Format:%ai$ */