1 /*
   2  * Copyright (c) 2002 Chris Adams.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24 
  25 #include "includes.h"
  26 
  27 #ifdef HAVE_OSF_SIA
  28 #include "ssh.h"
  29 #include "auth.h"
  30 #include "auth-sia.h"
  31 #include "log.h"
  32 #include "servconf.h"
  33 #include "canohost.h"
  34 
  35 #include <sia.h>
  36 #include <siad.h>
  37 #include <pwd.h>
  38 #include <signal.h>
  39 #include <setjmp.h>
  40 #include <sys/resource.h>
  41 #include <unistd.h>
  42 #include <string.h>
  43 
  44 extern ServerOptions options;
  45 extern int saved_argc;
  46 extern char **saved_argv;
  47 
  48 extern int errno;
  49 
  50 int
  51 auth_sia_password(Authctxt *authctxt, char *pass)
  52 {
  53         int ret;
  54         SIAENTITY *ent = NULL;
  55         const char *host;
  56         char *user = authctxt->user;
  57 
  58         host = get_canonical_hostname(options.verify_reverse_mapping);
  59 
  60         if (!user || !pass || pass[0] == '\0')
  61                 return(0);
  62 
  63         if (sia_ses_init(&ent, saved_argc, saved_argv, host, user, NULL, 0,
  64             NULL) != SIASUCCESS)
  65                 return(0);
  66 
  67         if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
  68                 error("Couldn't authenticate %s from %s", user, host);
  69                 if (ret & SIASTOP)
  70                         sia_ses_release(&ent);
  71                 return(0);
  72         }
  73 
  74         sia_ses_release(&ent);
  75 
  76         return(1);
  77 }
  78 
  79 void
  80 session_setup_sia(char *user, char *tty)
  81 {
  82         struct passwd *pw;
  83         SIAENTITY *ent = NULL;
  84         const char *host;
  85 
  86         host = get_canonical_hostname (options.verify_reverse_mapping);
  87 
  88         if (sia_ses_init(&ent, saved_argc, saved_argv, host, user, tty, 0,
  89             NULL) != SIASUCCESS) {
  90                 fatal("sia_ses_init failed");
  91         }
  92 
  93         if ((pw = getpwnam(user)) == NULL) {
  94                 sia_ses_release(&ent);
  95                 fatal("getpwnam: no user: %s", user);
  96         }
  97         if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
  98                 sia_ses_release(&ent);
  99                 fatal("sia_make_entity_pwd failed");
 100         }
 101 
 102         ent->authtype = SIA_A_NONE;
 103         if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS) {
 104                 fatal("Couldn't establish session for %s from %s", user,
 105                     host);
 106         }
 107 
 108         if (setpriority(PRIO_PROCESS, 0, 0) == -1) {
 109                 sia_ses_release(&ent);
 110                 fatal("setpriority: %s", strerror (errno));
 111         }
 112 
 113         if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS) {
 114                 fatal("Couldn't launch session for %s from %s", user, host);
 115         }
 116         
 117         sia_ses_release(&ent);
 118 
 119         if (setreuid(geteuid(), geteuid()) < 0) {
 120                 fatal("setreuid: %s", strerror(errno));
 121         }
 122 }
 123 
 124 #endif /* HAVE_OSF_SIA */
 125 
 126 #pragma ident   "%Z%%M% %I%     %E% SMI"