auth-sia.c

   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 <sia.h>
  29 #include <siad.h>
  30 #include <pwd.h>
  31 #include <signal.h>
  32 #include <setjmp.h>
  33 #include <sys/resource.h>
  34 #include <unistd.h>
  35 #include <stdarg.h>
  36 #include <string.h>
  37
  38 #include "ssh.h"
  39 #include "key.h"
  40 #include "hostfile.h"
  41 #include "auth.h"
  42 #include "auth-sia.h"
  43 #include "log.h"
  44 #include "servconf.h"
  45 #include "canohost.h"
  46 #include "uidswap.h"
  47
  48 extern ServerOptions options;
  49 extern int saved_argc;
  50 extern char **saved_argv;
  51
  52 int
  53 sys_auth_passwd(Authctxt *authctxt, const char *pass)
  54 {
  55         int ret;
  56         SIAENTITY *ent = NULL;
  57         const char *host;
  58
  59         host = get_canonical_hostname(options.use_dns);
  60
  61         if (!authctxt->user || pass == NULL || pass[0] == '\0')
  62                 return (0);
  63
  64         if (sia_ses_init(&ent, saved_argc, saved_argv, host, authctxt->user,
  65             NULL, 0, NULL) != SIASUCCESS)
  66                 return (0);
  67
  68         if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
  69                 error("Couldn't authenticate %s from %s",
  70                     authctxt->user, host);
  71                 if (ret & SIASTOP)
  72                         sia_ses_release(&ent);
  73
  74                 return (0);
  75         }
  76
  77         sia_ses_release(&ent);
  78
  79         return (1);
  80 }
  81
  82 void
  83 session_setup_sia(struct passwd *pw, char *tty)
  84 {
  85         SIAENTITY *ent = NULL;
  86         const char *host;
  87
  88         host = get_canonical_hostname(options.use_dns);
  89
  90         if (sia_ses_init(&ent, saved_argc, saved_argv, host, pw->pw_name,
  91             tty, 0, NULL) != SIASUCCESS)
  92                 fatal("sia_ses_init failed");
  93
  94         if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
  95                 sia_ses_release(&ent);
  96                 fatal("sia_make_entity_pwd failed");
  97         }
  98
  99         ent->authtype = SIA_A_NONE;
 100         if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS)
 101                 fatal("Couldn't establish session for %s from %s",
 102                     pw->pw_name, host);
 103
 104         if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS)
 105                 fatal("Couldn't launch session for %s from %s",
 106                     pw->pw_name, host);
 107
 108         sia_ses_release(&ent);
 109
 110         setuid(0);
 111         permanently_set_uid(pw);
 112 }
 113
 114 #endif /* HAVE_OSF_SIA */