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Diffstat (limited to 'usr/src/cmd/ssh/sshd/auth-krb5.c')
-rw-r--r--usr/src/cmd/ssh/sshd/auth-krb5.c407
1 files changed, 0 insertions, 407 deletions
diff --git a/usr/src/cmd/ssh/sshd/auth-krb5.c b/usr/src/cmd/ssh/sshd/auth-krb5.c
deleted file mode 100644
index 3f5416af41..0000000000
--- a/usr/src/cmd/ssh/sshd/auth-krb5.c
+++ /dev/null
@@ -1,407 +0,0 @@
-/*
- * Kerberos v5 authentication and ticket-passing routines.
- *
- * $FreeBSD: src/crypto/openssh/auth-krb5.c,v 1.6 2001/02/13 16:58:04 assar Exp $
- */
-/*
- * Copyright (c) 2002 Daniel Kouril. 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: auth-krb5.c,v 1.9 2002/09/09 06:48:06 itojun Exp $");
-
-#pragma ident "%Z%%M% %I% %E% SMI"
-
-#include "ssh.h"
-#include "ssh1.h"
-#include "packet.h"
-#include "xmalloc.h"
-#include "log.h"
-#include "servconf.h"
-#include "uidswap.h"
-#include "auth.h"
-
-#ifdef KRB5
-#include <krb5.h>
-#ifndef HEIMDAL
-#define krb5_get_err_text(context,code) error_message(code)
-#endif /* !HEIMDAL */
-
-extern ServerOptions options;
-
-static int
-krb5_init(void *context)
-{
- Authctxt *authctxt = (Authctxt *)context;
- krb5_error_code problem;
- static int cleanup_registered = 0;
-
- if (authctxt->krb5_ctx == NULL) {
- problem = krb5_init_context(&authctxt->krb5_ctx);
- if (problem)
- return (problem);
- krb5_init_ets(authctxt->krb5_ctx);
- }
- if (!cleanup_registered) {
- fatal_add_cleanup(krb5_cleanup_proc, authctxt);
- cleanup_registered = 1;
- }
- return (0);
-}
-
-/*
- * Try krb5 authentication. server_user is passed for logging purposes
- * only, in auth is received ticket, in client is returned principal
- * from the ticket
- */
-int
-auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client, krb5_data *reply)
-{
- krb5_error_code problem;
- krb5_principal server;
- krb5_ticket *ticket;
- int fd, ret;
-
- ret = 0;
- server = NULL;
- ticket = NULL;
- reply->length = 0;
-
- problem = krb5_init(authctxt);
- if (problem)
- goto err;
-
- problem = krb5_auth_con_init(authctxt->krb5_ctx,
- &authctxt->krb5_auth_ctx);
- if (problem)
- goto err;
-
- fd = packet_get_connection_in();
-#ifdef HEIMDAL
- problem = krb5_auth_con_setaddrs_from_fd(authctxt->krb5_ctx,
- authctxt->krb5_auth_ctx, &fd);
-#else
- problem = krb5_auth_con_genaddrs(authctxt->krb5_ctx,
- authctxt->krb5_auth_ctx,fd,
- KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR |
- KRB5_AUTH_CONTEXT_GENERATE_LOCAL_FULL_ADDR);
-#endif
- if (problem)
- goto err;
-
- problem = krb5_sname_to_principal(authctxt->krb5_ctx, NULL, NULL ,
- KRB5_NT_SRV_HST, &server);
- if (problem)
- goto err;
-
- problem = krb5_rd_req(authctxt->krb5_ctx, &authctxt->krb5_auth_ctx,
- auth, server, NULL, NULL, &ticket);
- if (problem)
- goto err;
-
-#ifdef HEIMDAL
- problem = krb5_copy_principal(authctxt->krb5_ctx, ticket->client,
- &authctxt->krb5_user);
-#else
- problem = krb5_copy_principal(authctxt->krb5_ctx,
- ticket->enc_part2->client,
- &authctxt->krb5_user);
-#endif
- if (problem)
- goto err;
-
- /* if client wants mutual auth */
- problem = krb5_mk_rep(authctxt->krb5_ctx, authctxt->krb5_auth_ctx,
- reply);
- if (problem)
- goto err;
-
- /* Check .k5login authorization now. */
- if (!krb5_kuserok(authctxt->krb5_ctx, authctxt->krb5_user,
- authctxt->pw->pw_name))
- goto err;
-
- if (client)
- krb5_unparse_name(authctxt->krb5_ctx, authctxt->krb5_user,
- client);
-
- ret = 1;
- err:
- if (server)
- krb5_free_principal(authctxt->krb5_ctx, server);
- if (ticket)
- krb5_free_ticket(authctxt->krb5_ctx, ticket);
- if (!ret && reply->length) {
- xfree(reply->data);
- memset(reply, 0, sizeof(*reply));
- }
-
- if (problem) {
- if (authctxt->krb5_ctx != NULL)
- debug("Kerberos v5 authentication failed: %s",
- krb5_get_err_text(authctxt->krb5_ctx, problem));
- else
- debug("Kerberos v5 authentication failed: %d",
- problem);
- }
-
- return (ret);
-}
-
-int
-auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt)
-{
- krb5_error_code problem;
- krb5_ccache ccache = NULL;
- char *pname;
- krb5_creds **creds;
-
- if (authctxt->pw == NULL || authctxt->krb5_user == NULL)
- return (0);
-
- temporarily_use_uid(authctxt->pw);
-
-#ifdef HEIMDAL
- problem = krb5_cc_gen_new(authctxt->krb5_ctx, &krb5_fcc_ops, &ccache);
-#else
-{
- char ccname[40];
- int tmpfd;
-
- snprintf(ccname,sizeof(ccname),"FILE:/tmp/krb5cc_%d_XXXXXX",geteuid());
-
- if ((tmpfd = mkstemp(ccname+strlen("FILE:")))==-1) {
- log("mkstemp(): %.100s", strerror(errno));
- problem = errno;
- goto fail;
- }
- if (fchmod(tmpfd,S_IRUSR | S_IWUSR) == -1) {
- log("fchmod(): %.100s", strerror(errno));
- close(tmpfd);
- problem = errno;
- goto fail;
- }
- close(tmpfd);
- problem = krb5_cc_resolve(authctxt->krb5_ctx, ccname, &ccache);
-}
-#endif
- if (problem)
- goto fail;
-
- problem = krb5_cc_initialize(authctxt->krb5_ctx, ccache,
- authctxt->krb5_user);
- if (problem)
- goto fail;
-
-#ifdef HEIMDAL
- problem = krb5_rd_cred2(authctxt->krb5_ctx, authctxt->krb5_auth_ctx,
- ccache, tgt);
- if (problem)
- goto fail;
-#else
- problem = krb5_rd_cred(authctxt->krb5_ctx, authctxt->krb5_auth_ctx,
- tgt, &creds, NULL);
- if (problem)
- goto fail;
- problem = krb5_cc_store_cred(authctxt->krb5_ctx, ccache, *creds);
- if (problem)
- goto fail;
-#endif
-
- authctxt->krb5_fwd_ccache = ccache;
- ccache = NULL;
-
- authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
-
- problem = krb5_unparse_name(authctxt->krb5_ctx, authctxt->krb5_user,
- &pname);
- if (problem)
- goto fail;
-
- debug("Kerberos v5 TGT accepted (%s)", pname);
-
- restore_uid();
-
- return (1);
-
- fail:
- if (problem)
- debug("Kerberos v5 TGT passing failed: %s",
- krb5_get_err_text(authctxt->krb5_ctx, problem));
- if (ccache)
- krb5_cc_destroy(authctxt->krb5_ctx, ccache);
-
- restore_uid();
-
- return (0);
-}
-
-int
-auth_krb5_password(Authctxt *authctxt, const char *password)
-{
-#ifndef HEIMDAL
- krb5_creds creds;
- krb5_principal server;
- char ccname[40];
- int tmpfd;
-#endif
- krb5_error_code problem;
-
- if (authctxt->pw == NULL)
- return (0);
-
- temporarily_use_uid(authctxt->pw);
-
- problem = krb5_init(authctxt);
- if (problem)
- goto out;
-
- problem = krb5_parse_name(authctxt->krb5_ctx, authctxt->pw->pw_name,
- &authctxt->krb5_user);
- if (problem)
- goto out;
-
-#ifdef HEIMDAL
- problem = krb5_cc_gen_new(authctxt->krb5_ctx, &krb5_mcc_ops,
- &authctxt->krb5_fwd_ccache);
- if (problem)
- goto out;
-
- problem = krb5_cc_initialize(authctxt->krb5_ctx,
- authctxt->krb5_fwd_ccache, authctxt->krb5_user);
- if (problem)
- goto out;
-
- restore_uid();
- problem = krb5_verify_user(authctxt->krb5_ctx, authctxt->krb5_user,
- authctxt->krb5_fwd_ccache, password, 1, NULL);
- temporarily_use_uid(authctxt->pw);
-
- if (problem)
- goto out;
-
-#else
- problem = krb5_get_init_creds_password(authctxt->krb5_ctx, &creds,
- authctxt->krb5_user, (char *)password, NULL, NULL, 0, NULL, NULL);
- if (problem)
- goto out;
-
- problem = krb5_sname_to_principal(authctxt->krb5_ctx, NULL, NULL,
- KRB5_NT_SRV_HST, &server);
- if (problem)
- goto out;
-
- restore_uid();
- problem = krb5_verify_init_creds(authctxt->krb5_ctx, &creds, server,
- NULL, NULL, NULL);
- krb5_free_principal(authctxt->krb5_ctx, server);
- temporarily_use_uid(authctxt->pw);
- if (problem)
- goto out;
-
- if (!krb5_kuserok(authctxt->krb5_ctx, authctxt->krb5_user,
- authctxt->pw->pw_name)) {
- problem = -1;
- goto out;
- }
-
- snprintf(ccname,sizeof(ccname),"FILE:/tmp/krb5cc_%d_XXXXXX",geteuid());
-
- if ((tmpfd = mkstemp(ccname+strlen("FILE:")))==-1) {
- log("mkstemp(): %.100s", strerror(errno));
- problem = errno;
- goto out;
- }
-
- if (fchmod(tmpfd,S_IRUSR | S_IWUSR) == -1) {
- log("fchmod(): %.100s", strerror(errno));
- close(tmpfd);
- problem = errno;
- goto out;
- }
- close(tmpfd);
-
- problem = krb5_cc_resolve(authctxt->krb5_ctx, ccname, &authctxt->krb5_fwd_ccache);
- if (problem)
- goto out;
-
- problem = krb5_cc_initialize(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache,
- authctxt->krb5_user);
- if (problem)
- goto out;
-
- problem= krb5_cc_store_cred(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache,
- &creds);
- if (problem)
- goto out;
-#endif
-
- authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
-
- out:
- restore_uid();
-
- if (problem) {
- if (authctxt->krb5_ctx != NULL && problem!=-1)
- debug("Kerberos password authentication failed: %s",
- krb5_get_err_text(authctxt->krb5_ctx, problem));
- else
- debug("Kerberos password authentication failed: %d",
- problem);
-
- krb5_cleanup_proc(authctxt);
-
- if (options.kerberos_or_local_passwd)
- return (-1);
- else
- return (0);
- }
- return (1);
-}
-
-void
-krb5_cleanup_proc(void *context)
-{
- Authctxt *authctxt = (Authctxt *)context;
-
- debug("krb5_cleanup_proc called");
- if (authctxt->krb5_fwd_ccache) {
- krb5_cc_destroy(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
- authctxt->krb5_fwd_ccache = NULL;
- }
- if (authctxt->krb5_user) {
- krb5_free_principal(authctxt->krb5_ctx, authctxt->krb5_user);
- authctxt->krb5_user = NULL;
- }
- if (authctxt->krb5_auth_ctx) {
- krb5_auth_con_free(authctxt->krb5_ctx,
- authctxt->krb5_auth_ctx);
- authctxt->krb5_auth_ctx = NULL;
- }
- if (authctxt->krb5_ctx) {
- krb5_free_context(authctxt->krb5_ctx);
- authctxt->krb5_ctx = NULL;
- }
-}
-
-#endif /* KRB5 */
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