view dbmulti.c @ 994:5c5ade336926

Prefer stronger algorithms in algorithm negotiation. Prefer diffie-hellman-group14-sha1 (2048 bit) over diffie-hellman-group1-sha1 (1024 bit). Due to meet-in-the-middle attacks the effective key length of three key 3DES is 112 bits. AES is stronger and faster then 3DES. Prefer to delay the start of compression until after authentication has completed. This avoids exposing compression code to attacks from unauthenticated users. (github pull request #9)
author Fedor Brunner <fedor.brunner@azet.sk>
date Fri, 23 Jan 2015 23:00:25 +0800
parents af4ef98b8591
children 11f645c3715b
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/*
 * Dropbear SSH
 * 
 * Copyright (c) 2002,2003 Matt Johnston
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE. */

#include "includes.h"

/* definitions are cleanest if we just put them here */
int dropbear_main(int argc, char ** argv);
int dropbearkey_main(int argc, char ** argv);
int dropbearconvert_main(int argc, char ** argv);
int scp_main(int argc, char ** argv);

int main(int argc, char ** argv) {

	char * progname;

	if (argc > 0) {
		/* figure which form we're being called as */
		progname = basename(argv[0]);

#ifdef DBMULTI_dropbear
		if (strcmp(progname, "dropbear") == 0) {
			return dropbear_main(argc, argv);
		}
#endif
#ifdef DBMULTI_dbclient
		if (strcmp(progname, "dbclient") == 0
				|| strcmp(progname, "ssh") == 0) {
			return cli_main(argc, argv);
		}
#endif
#ifdef DBMULTI_dropbearkey
		if (strcmp(progname, "dropbearkey") == 0) {
			return dropbearkey_main(argc, argv);
		}
#endif
#ifdef DBMULTI_dropbearconvert
		if (strcmp(progname, "dropbearconvert") == 0) {
			return dropbearconvert_main(argc, argv);
		}
#endif
#ifdef DBMULTI_scp
		if (strcmp(progname, "scp") == 0) {
			return scp_main(argc, argv);
		}
#endif
	}

	fprintf(stderr, "Dropbear SSH multi-purpose v%s\n"
			"Make a symlink pointing at this binary with one of the following names:\n"
#ifdef DBMULTI_dropbear
			"'dropbear' - the Dropbear server\n"
#endif
#ifdef DBMULTI_dbclient
			"'dbclient' or 'ssh' - the Dropbear client\n"
#endif
#ifdef DBMULTI_dropbearkey
			"'dropbearkey' - the key generator\n"
#endif
#ifdef DBMULTI_dropbearconvert
			"'dropbearconvert' - the key converter\n"
#endif
#ifdef DBMULTI_scp
			"'scp' - secure copy\n"
#endif
			,
			DROPBEAR_VERSION);
	exit(1);

}