Mercurial > dropbear
view dbmulti.c @ 1855:35d504d59c05
Implement server-side support for sk-ecdsa U2F-backed keys (#142)
* Implement server-side support for sk-ecdsa U2F-backed keys
* Fix out-of-bounds read on normal ecdsa-sha2-[identifier] keys
* Fix one more potential out-of-bounds read
* Check if nistp256 curve is used in sk-ecdsa-sha2- key
It's the only allowed curve per PROTOCOL.u2f specification
* Implement server-side support for sk-ed25519 FIDO2-backed keys
* Keys with type sk-* make no sense as host keys, so they should be
disabled
* fix typo
* Make sk-ecdsa call buf_ecdsa_verify
This reduces code duplication, the SK code just handles the
different message format.
* Reduce sk specific code
The application id can be stored in signkey, then we don't need
to call sk-specific functions from svr-authpubkey
* Remove debugging output, which causes compilation errors with DEBUG_TRACE disabled
* Proper cleanup of sk_app
Co-authored-by: Matt Johnston <[email protected]>
author | egor-duda <egor-duda@users.noreply.github.com> |
---|---|
date | Sat, 22 Jan 2022 16:53:04 +0300 |
parents | 11f645c3715b |
children | 0dcc5b0d93fa |
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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 cli_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); static int runprog(const char *progname, int argc, char ** argv, int *match) { *match = DROPBEAR_SUCCESS; #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 *match = DROPBEAR_FAILURE; return 1; } int main(int argc, char ** argv) { int i; for (i = 0; i < 2; i++) { /* Try symlink first, then try as an argument eg "dropbearmulti dbclient host ..." */ if (argc > i) { int match, res; /* figure which form we're being called as */ const char* progname = basename(argv[i]); res = runprog(progname, argc-i, &argv[i], &match); if (match == DROPBEAR_SUCCESS) { return res; } } } fprintf(stderr, "Dropbear SSH multi-purpose v%s\n" "Make a symlink pointing at this binary with one of the\n" "following names or run 'dropbearmulti <command>'.\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); }