181 lines
4.2 KiB
C
181 lines
4.2 KiB
C
/* Copyright (c) 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <libintl.h>
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#include <rpcsvc/nis.h>
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nis_name
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nis_local_group (void)
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{
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static char __nisgroup[NIS_MAXNAMELEN + 1];
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if (__nisgroup[0] == '\0')
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{
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char *cptr;
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char *cp;
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if ((cptr = getenv ("NIS_GROUP")) == NULL)
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return __nisgroup;
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if (strlen (cptr) >= NIS_MAXNAMELEN)
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return __nisgroup;
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cp = stpcpy (__nisgroup, cptr);
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if (cp[-1] != '.')
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{
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cptr = nis_local_directory ();
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if ((cp - __nisgroup) + strlen (cptr) + 1 < NIS_MAXNAMELEN)
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{
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*cp++ = '.';
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strcpy (cp, cptr);
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}
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else
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__nisgroup[0] = '\0';
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}
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}
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return __nisgroup;
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}
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nis_name
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nis_local_directory (void)
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{
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static char __nisdomainname[NIS_MAXNAMELEN + 1];
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if (__nisdomainname[0] == '\0')
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{
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if (getdomainname (__nisdomainname, NIS_MAXNAMELEN) < 0)
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__nisdomainname[0] = '\0';
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else
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{
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char *cp = strchr (__nisdomainname, '\0');
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/* Missing trailing dot? */
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if (cp[-1] != '.')
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{
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*cp++ = '.';
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*cp = '\0';
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}
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}
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}
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return __nisdomainname;
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}
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nis_name
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nis_local_principal (void)
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{
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static char __principal[NIS_MAXNAMELEN + 1];
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if (__principal[0] == '\0')
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{
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char buf[NIS_MAXNAMELEN + 1];
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nis_result *res;
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uid_t uid = geteuid ();
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if (uid != 0)
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{
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int len = snprintf (buf, NIS_MAXNAMELEN - 1,
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"[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s",
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uid, nis_local_directory ());
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if (len >= NIS_MAXNAMELEN - 1)
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/* XXX The buffer is too small. Can this happen??? */
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return strcpy (__principal, "nobody");
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if (buf[len - 1] != '.')
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{
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buf[len++] = '.';
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buf[len] = '\0';
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}
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res = nis_list (buf, USE_DGRAM + NO_AUTHINFO + FOLLOW_LINKS +
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FOLLOW_PATH, NULL, NULL);
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if (res == NULL)
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return strcpy (__principal, "nobody");
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if (NIS_RES_STATUS (res) == NIS_SUCCESS)
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{
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if (res->objects.objects_len > 1)
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{
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/* More than one principal with same uid? something
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wrong with cred table. Should be unique. Warn user
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and continue. */
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printf (_("\
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LOCAL entry for UID %d in directory %s not unique\n"),
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uid, nis_local_directory ());
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}
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strcpy (__principal, ENTRY_VAL (res->objects.objects_val, 0));
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nis_freeresult (res);
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return __principal;
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}
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else
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{
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nis_freeresult (res);
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return strcpy (__principal, "nobody");
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}
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}
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else
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return strcpy (__principal, nis_local_host ());
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/* Should be never reached */
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return strcpy (__principal, "nobody");
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}
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return __principal;
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}
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nis_name
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nis_local_host (void)
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{
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static char __nishostname[NIS_MAXNAMELEN + 1];
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if (__nishostname[0] == '\0')
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{
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if (gethostname (__nishostname, NIS_MAXNAMELEN) < 0)
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__nishostname[0] = '\0';
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else
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{
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char *cp = strchr (__nishostname, '\0');
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int len = cp - __nishostname;
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/* Hostname already fully qualified? */
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if (cp[-1] == '.')
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return __nishostname;
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if (len + strlen (nis_local_directory ()) + 1 > NIS_MAXNAMELEN)
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{
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__nishostname[0] = '\0';
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return __nishostname;
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}
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*cp++ = '.';
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strncpy (cp, nis_local_directory (), NIS_MAXNAMELEN - len -1);
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__nishostname[NIS_MAXNAMELEN] = '\0';
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}
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}
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return __nishostname;
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}
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