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-rw-r--r--nis/nis_local_names.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/nis/nis_local_names.c b/nis/nis_local_names.c
new file mode 100644
index 0000000000..50120a6f73
--- /dev/null
+++ b/nis/nis_local_names.c
@@ -0,0 +1,184 @@
+/* Copyright (c) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+
+nis_name
+nis_local_group (void)
+{
+ static char __nisgroup[NIS_MAXNAMELEN + 1];
+
+ if (__nisgroup[0] == '\0')
+ {
+ char *cptr;
+
+ if ((cptr = getenv ("NIS_GROUP")) == NULL)
+ return __nisgroup;
+
+ if (strlen (cptr) >= NIS_MAXNAMELEN)
+ return __nisgroup;
+
+ strcpy (__nisgroup, cptr);
+
+ if (__nisgroup[strlen (__nisgroup) - 1] != '.')
+ {
+ cptr = nis_local_directory ();
+ if (strlen (__nisgroup) + strlen (cptr) + 1 < NIS_MAXNAMELEN)
+ {
+ strcat (__nisgroup, ".");
+ strcat (__nisgroup, cptr);
+ }
+ else
+ {
+ __nisgroup[0] = '\0';
+ return __nisgroup;
+ }
+ }
+ }
+
+ return __nisgroup;
+}
+
+
+nis_name
+nis_local_directory (void)
+{
+ static char __nisdomainname[NIS_MAXNAMELEN + 1];
+ int len;
+
+ if (__nisdomainname[0] == '\0')
+ {
+ if (getdomainname (__nisdomainname, NIS_MAXNAMELEN) < 0)
+ strcpy (__nisdomainname, "\0");
+ else
+ {
+ len = strlen (__nisdomainname);
+
+ /* Missing trailing dot? */
+ if (__nisdomainname[len - 1] != '.')
+ {
+ __nisdomainname[len] = '.';
+ __nisdomainname[len + 1] = '\0';
+ }
+ }
+ }
+
+ return __nisdomainname;
+}
+
+nis_name
+nis_local_principal (void)
+{
+ static char __principal[NIS_MAXNAMELEN + 1];
+
+ if (__principal[0] == '\0')
+ {
+ char buf[NIS_MAXNAMELEN + 1];
+ nis_result *res;
+ uid_t uid = geteuid ();
+
+ if (uid != 0)
+ {
+ snprintf (buf, NIS_MAXNAMELEN - 1,
+ "[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s",
+ uid, nis_local_directory ());
+
+ if (buf[strlen (buf) - 1] != '.')
+ strcat (buf, ".");
+
+ res = nis_list (buf, USE_DGRAM + NO_AUTHINFO + FOLLOW_LINKS +
+ FOLLOW_PATH, NULL, NULL);
+
+ if (res == NULL)
+ {
+ strcpy (__principal, "nobody");
+ return __principal;
+ }
+
+ if (res->status == NIS_SUCCESS)
+ {
+ if (res->objects.objects_len > 1)
+ {
+ /* More than one principal with same uid? something
+ wrong with cred table. Should be unique Warn user
+ and continue. */
+ printf (_("\
+LOCAL entry for UID %d in directory %s not unique\n"),
+ uid, nis_local_directory ());
+ }
+ strcpy (__principal, ENTRY_VAL (res->objects.objects_val, 0));
+ nis_freeresult (res);
+ return __principal;
+ }
+ else
+ {
+ nis_freeresult (res);
+ strcpy (__principal, "nobody");
+ return __principal;
+ }
+ }
+ else
+ {
+ strcpy (__principal, nis_local_host ());
+ return __principal;
+ }
+
+ /* Should be never reached */
+ strcpy (__principal, "nobody");
+ return __principal;
+ }
+ return __principal;
+}
+
+nis_name
+nis_local_host (void)
+{
+ static char __nishostname[NIS_MAXNAMELEN + 1];
+ int len;
+
+ if (__nishostname[0] == '\0')
+ {
+ char *cp = __nishostname;
+
+ if (gethostname (__nishostname, NIS_MAXNAMELEN) < 0)
+ cp = stpcpy (cp, "\0");
+
+ len = cp - __nishostname;
+
+ /* Hostname already fully qualified? */
+ if (__nishostname[len - 1] == '.')
+ return __nishostname;
+
+ if (strlen (__nishostname + strlen (nis_local_directory ()) + 1) >
+ NIS_MAXNAMELEN)
+ {
+ __nishostname[0] = '\0';
+ return __nishostname;
+ }
+
+ *cp++ = '.';
+ stpcpy (cp, nis_local_directory ());
+ }
+
+ return __nishostname;
+}