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d4af9e693f
I have worked hard to reduce diffs against the vendor branch. One notable change in that respect is that we no longer prefer DSA over RSA - the reasons for doing so went away years ago. This may cause some surprises, as ssh will warn about unknown host keys even for hosts whose keys haven't changed. MFC after: 6 weeks
168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/*
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* Copyright (c) 2002 Chris Adams. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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#ifdef HAVE_OSF_SIA
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#include <sia.h>
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#include <siad.h>
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#include <pwd.h>
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#include <signal.h>
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#include <setjmp.h>
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#include <sys/resource.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/security.h>
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#include <prot.h>
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#include <time.h>
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#include "ssh.h"
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#include "key.h"
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#include "hostfile.h"
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#include "auth.h"
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#include "auth-sia.h"
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#include "log.h"
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#include "servconf.h"
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#include "canohost.h"
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#include "uidswap.h"
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extern ServerOptions options;
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extern int saved_argc;
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extern char **saved_argv;
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static int
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sia_password_change_required(const char *user)
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{
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struct es_passwd *acct;
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time_t pw_life;
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time_t pw_date;
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set_auth_parameters(saved_argc, saved_argv);
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if ((acct = getespwnam(user)) == NULL) {
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error("Couldn't access protected database entry for %s", user);
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endprpwent();
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return (0);
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}
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/* If forced password change flag is set, honor it */
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if (acct->uflg->fg_psw_chg_reqd && acct->ufld->fd_psw_chg_reqd) {
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endprpwent();
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return (1);
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}
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/* Obtain password lifetime; if none, it can't have expired */
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if (acct->uflg->fg_expire)
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pw_life = acct->ufld->fd_expire;
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else if (acct->sflg->fg_expire)
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pw_life = acct->sfld->fd_expire;
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else {
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endprpwent();
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return (0);
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}
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/* Offset from last change; if none, it must be expired */
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if (acct->uflg->fg_schange)
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pw_date = acct->ufld->fd_schange + pw_life;
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else {
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endprpwent();
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return (1);
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}
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endprpwent();
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/* If expiration date is prior to now, change password */
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return (pw_date <= time((time_t *) NULL));
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}
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int
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sys_auth_passwd(Authctxt *authctxt, const char *pass)
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{
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int ret;
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SIAENTITY *ent = NULL;
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const char *host;
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host = get_canonical_hostname(options.use_dns);
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if (!authctxt->user || pass == NULL || pass[0] == '\0')
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return (0);
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if (sia_ses_init(&ent, saved_argc, saved_argv, host, authctxt->user,
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NULL, 0, NULL) != SIASUCCESS)
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return (0);
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if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
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error("Couldn't authenticate %s from %s",
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authctxt->user, host);
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if (ret & SIASTOP)
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sia_ses_release(&ent);
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return (0);
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}
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sia_ses_release(&ent);
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authctxt->force_pwchange = sia_password_change_required(
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authctxt->user);
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return (1);
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}
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void
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session_setup_sia(struct passwd *pw, char *tty)
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{
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SIAENTITY *ent = NULL;
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const char *host;
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host = get_canonical_hostname(options.use_dns);
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if (sia_ses_init(&ent, saved_argc, saved_argv, host, pw->pw_name,
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tty, 0, NULL) != SIASUCCESS)
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fatal("sia_ses_init failed");
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if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
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sia_ses_release(&ent);
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fatal("sia_make_entity_pwd failed");
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}
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ent->authtype = SIA_A_NONE;
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if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS)
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fatal("Couldn't establish session for %s from %s",
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pw->pw_name, host);
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if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS)
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fatal("Couldn't launch session for %s from %s",
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pw->pw_name, host);
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sia_ses_release(&ent);
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setuid(0);
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permanently_set_uid(pw);
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}
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#endif /* HAVE_OSF_SIA */
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