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Diff for /src/usr.bin/ssh/auth-rhosts.c between version 1.13 and 1.13.2.3

version 1.13, 2000/04/14 10:30:29 version 1.13.2.3, 2001/03/12 15:44:07
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 /*  /*
  *  
  * auth-rhosts.c  
  *  
  * Author: Tatu Ylonen <ylo@cs.hut.fi>   * Author: Tatu Ylonen <ylo@cs.hut.fi>
  *  
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland   * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  *                    All rights reserved   *                    All rights reserved
  *  
  * Created: Fri Mar 17 05:12:18 1995 ylo  
  *  
  * Rhosts authentication.  This file contains code to check whether to admit   * Rhosts authentication.  This file contains code to check whether to admit
  * the login based on rhosts authentication.  This file also processes   * the login based on rhosts authentication.  This file also processes
  * /etc/hosts.equiv.   * /etc/hosts.equiv.
  *   *
    * As far as I am concerned, the code I have written for this software
    * can be used freely for any purpose.  Any derived versions of this
    * software must be clearly marked as such, and if the derived work is
    * incompatible with the protocol description in the RFC file, it must be
    * called by a name other than "ssh" or "Secure Shell".
  */   */
   
 #include "includes.h"  #include "includes.h"
 RCSID("$Id$");  RCSID("$OpenBSD$");
   
 #include "packet.h"  #include "packet.h"
 #include "ssh.h"  
 #include "xmalloc.h"  #include "xmalloc.h"
 #include "uidswap.h"  #include "uidswap.h"
   #include "pathnames.h"
   #include "log.h"
 #include "servconf.h"  #include "servconf.h"
   #include "canohost.h"
   #include "auth.h"
   
 /*  /*
  * This function processes an rhosts-style file (.rhosts, .shosts, or   * This function processes an rhosts-style file (.rhosts, .shosts, or
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         const char *hostname, *ipaddr;          const char *hostname, *ipaddr;
         struct stat st;          struct stat st;
         static const char *rhosts_files[] = {".shosts", ".rhosts", NULL};          static const char *rhosts_files[] = {".shosts", ".rhosts", NULL};
         unsigned int rhosts_file_index;          u_int rhosts_file_index;
   
           /* no user given */
           if (pw == NULL)
                   return 0;
         /* Switch to the user's uid. */          /* Switch to the user's uid. */
         temporarily_use_uid(pw->pw_uid);          temporarily_use_uid(pw->pw_uid);
         /*          /*
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         /* Deny if The user has no .shosts or .rhosts file and there are no system-wide files. */          /* Deny if The user has no .shosts or .rhosts file and there are no system-wide files. */
         if (!rhosts_files[rhosts_file_index] &&          if (!rhosts_files[rhosts_file_index] &&
             stat("/etc/hosts.equiv", &st) < 0 &&              stat(_PATH_RHOSTS_EQUIV, &st) < 0 &&
             stat(SSH_HOSTS_EQUIV, &st) < 0)              stat(_PATH_SSH_HOSTS_EQUIV, &st) < 0)
                 return 0;                  return 0;
   
         hostname = get_canonical_hostname();          hostname = get_canonical_hostname(options.reverse_mapping_check);
         ipaddr = get_remote_ipaddr();          ipaddr = get_remote_ipaddr();
   
         /* If not logging in as superuser, try /etc/hosts.equiv and shosts.equiv. */          /* If not logging in as superuser, try /etc/hosts.equiv and shosts.equiv. */
         if (pw->pw_uid != 0) {          if (pw->pw_uid != 0) {
                 if (check_rhosts_file("/etc/hosts.equiv", hostname, ipaddr, client_user,                  if (check_rhosts_file(_PATH_RHOSTS_EQUIV, hostname, ipaddr, client_user,
                                       pw->pw_name)) {                                        pw->pw_name)) {
                         packet_send_debug("Accepted for %.100s [%.100s] by /etc/hosts.equiv.",                          packet_send_debug("Accepted for %.100s [%.100s] by /etc/hosts.equiv.",
                                           hostname, ipaddr);                                            hostname, ipaddr);
                         return 1;                          return 1;
                 }                  }
                 if (check_rhosts_file(SSH_HOSTS_EQUIV, hostname, ipaddr, client_user,                  if (check_rhosts_file(_PATH_SSH_HOSTS_EQUIV, hostname, ipaddr, client_user,
                                       pw->pw_name)) {                                        pw->pw_name)) {
                         packet_send_debug("Accepted for %.100s [%.100s] by %.100s.",                          packet_send_debug("Accepted for %.100s [%.100s] by %.100s.",
                                       hostname, ipaddr, SSH_HOSTS_EQUIV);                                        hostname, ipaddr, _PATH_SSH_HOSTS_EQUIV);
                         return 1;                          return 1;
                 }                  }
         }          }
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