Mercurial > dropbear
diff dropbearconvert.c @ 4:fe6bca95afa7
Makefile.in contains updated files required
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Tue, 01 Jun 2004 02:46:09 +0000 |
parents | |
children | 223b0f5f8dce |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dropbearconvert.c Tue Jun 01 02:46:09 2004 +0000 @@ -0,0 +1,146 @@ +/* + * Dropbear - a SSH2 server + * + * 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. */ + +/* This program converts to/from Dropbear and OpenSSH private-key formats */ +#include "includes.h" +#include "signkey.h" +#include "buffer.h" +#include "dbutil.h" +#include "keyimport.h" + + +static int do_convert(int intype, const char* infile, int outtype, + const char* outfile); + +static void printhelp(char * progname); + +static void printhelp(char * progname) { + + fprintf(stderr, "Usage: %s <inputtype> <outputtype> <inputfile> <outputfile>\n\n" + "CAUTION: This program is for convenience only, and is not secure if used on\n" + "untrusted input files, ie it could allow arbitrary code execution.\n" + "All parameters must be specified in order.\n" + "\n" + "The input and output types are one of:\n" + "openssh\n" + "dropbear\n" + "\n" + "Example:\n" + "dropbearconvert openssh dropbear /etc/ssh/ssh_host_rsa_key /etc/dropbear_rsa_host_key\n" + "\n" + "The inputfile and output file can be '-' to specify\n" + "standard input or standard output.\n", progname); +} + +#if defined(DBMULTI_CONVERT) || !defined(DROPBEAR_MULTI) +#if defined(DBMULTI_CONVERT) && defined(DROPBEAR_MULTI) +int dropbearconvert_main(int argc, char ** argv) { +#else +int main(int argc, char ** argv) { +#endif + + int intype, outtype; + const char* infile; + const char* outfile; + + /* get the commandline options */ + if (argc != 5) { + fprintf(stderr, "All arguments must be specified\n"); + goto usage; + } + + /* input type */ + if (argv[1][0] == 'd') { + intype = KEYFILE_DROPBEAR; + } else if (argv[1][0] == 'o') { + intype = KEYFILE_OPENSSH; + } else { + fprintf(stderr, "Invalid input key type\n"); + goto usage; + } + + /* output type */ + if (argv[2][0] == 'd') { + outtype = KEYFILE_DROPBEAR; + } else if (argv[2][0] == 'o') { + outtype = KEYFILE_OPENSSH; + } else { + fprintf(stderr, "Invalid output key type\n"); + goto usage; + } + + /* we don't want output readable by others */ + umask(077); + + infile = argv[3]; + outfile = argv[4]; + + return do_convert(intype, infile, outtype, outfile); + +usage: + printhelp(argv[0]); + return 1; +} +#endif + +static int do_convert(int intype, const char* infile, int outtype, + const char* outfile) { + + sign_key * key = NULL; + char * keytype = NULL; + int ret = 1; + + key = import_read(infile, NULL, intype); + if (!key) { + fprintf(stderr, "Error reading key from '%s'\n", + infile); + goto out; + } + +#ifdef DROPBEAR_RSA + if (key->rsakey != NULL) { + keytype = "RSA"; + } +#endif +#ifdef DROPBEAR_DSS + if (key->dsskey != NULL) { + keytype = "DSS"; + } +#endif + + fprintf(stderr, "Key is a %s key\n", keytype); + + if (import_write(outfile, key, NULL, outtype) != 1) { + fprintf(stderr, "Error writing key to '%s'\n", outfile); + } else { + fprintf(stderr, "Wrote key to '%s'\n", outfile); + ret = 0; + } + +out: + if (key) { + sign_key_free(key); + } + return ret; +}