diff options
Diffstat (limited to 'usr/src/cmd/ssh/ssh-keysign')
| -rw-r--r-- | usr/src/cmd/ssh/ssh-keysign/Makefile | 67 | ||||
| -rw-r--r-- | usr/src/cmd/ssh/ssh-keysign/ssh-keysign.c | 263 |
2 files changed, 0 insertions, 330 deletions
diff --git a/usr/src/cmd/ssh/ssh-keysign/Makefile b/usr/src/cmd/ssh/ssh-keysign/Makefile deleted file mode 100644 index ff0927c3b6..0000000000 --- a/usr/src/cmd/ssh/ssh-keysign/Makefile +++ /dev/null @@ -1,67 +0,0 @@ -# -# CDDL HEADER START -# -# The contents of this file are subject to the terms of the -# Common Development and Distribution License (the "License"). -# You may not use this file except in compliance with the License. -# -# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE -# or http://www.opensolaris.org/os/licensing. -# See the License for the specific language governing permissions -# and limitations under the License. -# -# When distributing Covered Code, include this CDDL HEADER in each -# file and include the License file at usr/src/OPENSOLARIS.LICENSE. -# If applicable, add the following below this CDDL HEADER, with the -# fields enclosed by brackets "[]" replaced with your own identifying -# information: Portions Copyright [yyyy] [name of copyright owner] -# -# CDDL HEADER END -# -# Copyright 2008 Sun Microsystems, Inc. All rights reserved. -# Use is subject to license terms. -# -# cmd/ssh/ssh-keysign/Makefile - -PROG= ssh-keysign - -DIRS= $(ROOTLIBSSH) $(ROOTLIBSUNSSH) - -OBJS = ssh-keysign.o -SRCS = $(OBJS:.o=.c) - -include ../../Makefile.cmd -include ../Makefile.ssh-common - -FILEMODE= 04555 - -LDLIBS += $(SSH_COMMON_LDLIBS) -lsocket -lnsl -lz -lcrypto - -POFILE_DIR= .. - -.KEEP_STATE: - -.PARALLEL: $(OBJS) - -all: $(PROG) - -$(PROG): $(OBJS) ../libssh/$(MACH)/libssh.a ../libopenbsd-compat/$(MACH)/libopenbsd-compat.a - $(LINK.c) $(OBJS) -o $@ $(LDLIBS) $(DYNFLAGS) - $(POST_PROCESS) - -clean: - $(RM) -f $(OBJS) $(PROG) - -lint: lint_SRCS - -include ../Makefile.msg.targ -include ../../Makefile.targ - -install: all $(DIRS) $(ROOTLIBSSHPROG) $(ROOTLIBSSH) - - -$(ROOTLIBSSHPROG)/%: % - $(INS.file) - -$(DIRS): - $(INS.dir) diff --git a/usr/src/cmd/ssh/ssh-keysign/ssh-keysign.c b/usr/src/cmd/ssh/ssh-keysign/ssh-keysign.c deleted file mode 100644 index 66f6fde586..0000000000 --- a/usr/src/cmd/ssh/ssh-keysign/ssh-keysign.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - * Copyright 2004 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ -/* - * Copyright (c) 2002 Markus Friedl. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "includes.h" -RCSID("$OpenBSD: ssh-keysign.c,v 1.7 2002/07/03 14:21:05 markus Exp $"); - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include <unistd.h> - -#include <openssl/evp.h> -#include <openssl/rand.h> -#include <openssl/rsa.h> - -#include "log.h" -#include "key.h" -#include "ssh.h" -#include "ssh2.h" -#include "misc.h" -#include "xmalloc.h" -#include "buffer.h" -#include "bufaux.h" -#include "authfile.h" -#include "msg.h" -#include "canohost.h" -#include "pathnames.h" -#include "readconf.h" - -uid_t original_real_uid; /* XXX readconf.c needs this */ - -#ifdef HAVE___PROGNAME -extern char *__progname; -#else -#ifndef lint -char *__progname; -#endif /* lint */ -#endif - -static int -valid_request(struct passwd *pw, char *host, Key **ret, u_char *data, - u_int datalen) -{ - Buffer b; - Key *key; - u_char *pkblob; - u_int blen, len; - char *pkalg, *p; - int pktype, fail; - - fail = 0; - - buffer_init(&b); - buffer_append(&b, data, datalen); - - /* session id, currently limited to SHA1 (20 bytes) */ - p = buffer_get_string(&b, &len); - if (len != 20) - fail++; - xfree(p); - - if (buffer_get_char(&b) != SSH2_MSG_USERAUTH_REQUEST) - fail++; - - /* server user */ - buffer_skip_string(&b); - - /* service */ - p = buffer_get_string(&b, NULL); - if (strcmp("ssh-connection", p) != 0) - fail++; - xfree(p); - - /* method */ - p = buffer_get_string(&b, NULL); - if (strcmp("hostbased", p) != 0) - fail++; - xfree(p); - - /* pubkey */ - pkalg = buffer_get_string(&b, NULL); - pkblob = buffer_get_string(&b, &blen); - - pktype = key_type_from_name(pkalg); - if (pktype == KEY_UNSPEC) - fail++; - else if ((key = key_from_blob(pkblob, blen)) == NULL) - fail++; - else if (key->type != pktype) - fail++; - xfree(pkalg); - xfree(pkblob); - - /* client host name, handle trailing dot */ - p = buffer_get_string(&b, &len); - debug2("valid_request: check expect chost %s got %s", host, p); - if (strlen(host) != len - 1) - fail++; - else if (p[len - 1] != '.') - fail++; - else if (strncasecmp(host, p, len - 1) != 0) - fail++; - xfree(p); - - /* local user */ - p = buffer_get_string(&b, NULL); - - if (strcmp(pw->pw_name, p) != 0) - fail++; - xfree(p); - - /* end of message */ - if (buffer_len(&b) != 0) - fail++; - - debug3("valid_request: fail %d", fail); - - if (fail && key != NULL) - key_free(key); - else - *ret = key; - - return (fail ? -1 : 0); -} - -int -main(int argc, char **argv) -{ - Buffer b; - Options options; - Key *keys[2], *key; - struct passwd *pw; - int key_fd[2], i, found, version = 2, fd; - u_char *signature, *data; - char *host; - u_int slen, dlen; - u_int32_t rnd[256]; - - /* - * Since these two open()s are all that's done here before - * dropping privileges with setreuid(), and since having been - * privileged protects ssh-keysign from core dumps and tracing, - * there's no need to use Least Privilege interfaces like - * setppriv(2). - */ - key_fd[0] = open(_PATH_HOST_RSA_KEY_FILE, O_RDONLY); - key_fd[1] = open(_PATH_HOST_DSA_KEY_FILE, O_RDONLY); - - (void) setreuid(getuid(), getuid()); - - (void) g11n_setlocale(LC_ALL, ""); - - init_rng(); - seed_rng(); - arc4random_stir(); - -#ifdef DEBUG_SSH_KEYSIGN - log_init("ssh-keysign", SYSLOG_LEVEL_DEBUG3, SYSLOG_FACILITY_AUTH, 0); -#endif - - /* verify that ssh-keysign is enabled by the admin */ - original_real_uid = getuid(); /* XXX readconf.c needs this */ - initialize_options(&options); - (void)read_config_file(_PATH_HOST_CONFIG_FILE, "", &options); - fill_default_options(&options); - if (options.hostbased_authentication != 1) - fatal("Hostbased authentication not enabled in %s", - _PATH_HOST_CONFIG_FILE); - - if (key_fd[0] == -1 && key_fd[1] == -1) - fatal("could not open any host key"); - - if ((pw = getpwuid(getuid())) == NULL) - fatal("getpwuid failed"); - pw = pwcopy(pw); - - SSLeay_add_all_algorithms(); - for (i = 0; i < 256; i++) - rnd[i] = arc4random(); - RAND_seed(rnd, sizeof(rnd)); - - found = 0; - for (i = 0; i < 2; i++) { - keys[i] = NULL; - if (key_fd[i] == -1) - continue; - keys[i] = key_load_private_pem(key_fd[i], KEY_UNSPEC, - NULL, NULL); - (void) close(key_fd[i]); - if (keys[i] != NULL && keys[i]->type == KEY_RSA) { - if (RSA_blinding_on(keys[i]->rsa, NULL) != 1) { - error("RSA_blinding_on failed"); - key_free(keys[i]); - keys[i] = NULL; - } - } - if (keys[i] != NULL) - found = 1; - } - if (!found) - fatal("no hostkey found"); - - buffer_init(&b); - if (ssh_msg_recv(STDIN_FILENO, &b) < 0) - fatal("ssh_msg_recv failed"); - if (buffer_get_char(&b) != version) - fatal("bad version"); - fd = buffer_get_int(&b); - if ((fd == STDIN_FILENO) || (fd == STDOUT_FILENO)) - fatal("bad fd"); - if ((host = get_local_name(fd)) == NULL) - fatal("cannot get sockname for fd"); - - data = buffer_get_string(&b, &dlen); - if (valid_request(pw, host, &key, data, dlen) < 0) - fatal("not a valid request"); - xfree(host); - - found = 0; - for (i = 0; i < 2; i++) { - if (keys[i] != NULL && - key_equal(key, keys[i])) { - found = 1; - break; - } - } - if (!found) - fatal("no matching hostkey found"); - - if (key_sign(keys[i], &signature, &slen, data, dlen) != 0) - fatal("key_sign failed"); - xfree(data); - - /* send reply */ - buffer_clear(&b); - buffer_put_string(&b, signature, slen); - ssh_msg_send(STDOUT_FILENO, version, &b); - - return (0); -} |