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-rw-r--r--nis/nis_subr.c310
1 files changed, 310 insertions, 0 deletions
diff --git a/nis/nis_subr.c b/nis/nis_subr.c
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+++ b/nis/nis_subr.c
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+/* 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 <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+
+nis_name
+nis_leaf_of (const nis_name name)
+{
+ static char result[NIS_MAXNAMELEN + 1];
+
+ return nis_leaf_of_r (name, result, NIS_MAXNAMELEN);
+}
+
+nis_name
+nis_leaf_of_r (const nis_name name, char *buffer, size_t buflen)
+{
+ size_t i = 0;
+
+ buffer[0] = '\0';
+
+ while (name[i] != '.' && name[i] != '\0')
+ i++;
+
+ if (i > buflen - 1)
+ {
+ errno = ERANGE;
+ return NULL;
+ }
+
+ if (i > 1)
+ strncpy (buffer, name, i - 1);
+
+ return buffer;
+}
+
+nis_name
+nis_name_of (const nis_name name)
+{
+ static char result[NIS_MAXNAMELEN + 1];
+
+ return nis_name_of_r (name, result, NIS_MAXNAMELEN);
+}
+
+nis_name
+nis_name_of_r (const nis_name name, char *buffer, size_t buflen)
+{
+ char *local_domain;
+ int diff;
+
+ local_domain = nis_local_directory ();
+
+ diff = strlen (name) - strlen (local_domain);
+ if (diff <= 0)
+ return NULL;
+
+ if (strcmp (&name[diff], local_domain) != 0)
+ return NULL;
+
+ if ((size_t) diff >= buflen)
+ {
+ errno = ERANGE;
+ return NULL;
+ }
+ memcpy (buffer, name, diff - 1);
+ buffer[diff - 1] = '\0';
+
+ if (diff - 1 == 0)
+ return NULL;
+
+ return buffer;
+}
+
+nis_name
+nis_domain_of (const nis_name name)
+{
+ static char result[NIS_MAXNAMELEN + 1];
+
+ return nis_domain_of_r (name, result, NIS_MAXNAMELEN);
+}
+
+nis_name
+nis_domain_of_r (const nis_name name, char *buffer, size_t buflen)
+{
+ char *cptr;
+ size_t cptr_len;
+
+ cptr = strchr (name, '.'); /* XXX What happens if the NIS name
+ does not contain a `.'? */
+ ++cptr;
+ cptr_len = strlen (cptr);
+
+ if (cptr_len == 0)
+ strcpy (buffer, ".");
+ else if (cptr_len >= buflen)
+ {
+ errno = ERANGE;
+ return NULL;
+ }
+ else
+ memcpy (buffer, cptr, cptr_len + 1);
+
+ return buffer;
+}
+
+static int
+count_dots (const nis_name str)
+{
+ int count = 0;
+ size_t i;
+
+ for (i = 0; i < strlen (str); ++i)
+ if (str[i] == '.')
+ ++count;
+
+ return count;
+}
+
+nis_name *
+nis_getnames (const nis_name name)
+{
+ nis_name *getnames = NULL;
+ char local_domain[NIS_MAXNAMELEN + 1];
+ char *path, *cp;
+ int count, pos;
+
+
+ strncpy (local_domain, nis_local_directory (), NIS_MAXNAMELEN);
+ local_domain[NIS_MAXNAMELEN] = '\0';
+
+ count = 1;
+ if ((getnames = malloc ((count + 1) * sizeof (char *))) == NULL)
+ return NULL;
+
+ /* Do we have a fully qualified NIS+ name ? If yes, give it back */
+ if (name[strlen (name) - 1] == '.')
+ {
+ if ((getnames[0] = strdup (name)) == NULL)
+ {
+ free (getnames);
+ return NULL;
+ }
+ getnames[1] = NULL;
+
+ return getnames;
+ }
+
+ /* Get the search path, where we have to search "name" */
+ path = getenv ("NIS_PATH");
+ if (path == NULL)
+ path = strdupa ("$");
+ else
+ path = strdupa (path);
+
+ pos = 0;
+
+ cp = strtok (path, ":");
+ while (cp)
+ {
+ if (strcmp (cp, "$") == 0)
+ {
+ char *cptr = local_domain;
+ char *tmp;
+
+ while (count_dots (cptr) >= 2)
+ {
+ if (pos >= count)
+ {
+ count += 5;
+ getnames = realloc (getnames, (count + 1) * sizeof (char *));
+ }
+ tmp = malloc (strlen (cptr) + strlen (local_domain) +
+ strlen (name) + 2);
+ if (tmp == NULL)
+ return NULL;
+
+ getnames[pos] = tmp;
+ tmp = stpcpy (tmp, name);
+ *tmp++ = '.';
+ stpcpy (tmp, cptr);
+
+ ++pos;
+
+ while (*cptr != '.')
+ ++cptr;
+ ++cptr;
+ }
+ }
+ else
+ {
+ char *tmp;
+
+ if (cp[strlen (cp) - 1] == '$')
+ {
+ tmp = malloc (strlen (cp) + strlen (local_domain) +
+ strlen (name) + 2);
+ if (tmp == NULL)
+ return NULL;
+
+ tmp = stpcpy (tmp, name);
+ *tmp++ = '.';
+ tmp = stpcpy (tmp, cp);
+ --tmp;
+ if (tmp[-1] != '.')
+ *tmp++ = '.';
+ stpcpy (tmp, local_domain);
+ }
+ else
+ {
+ tmp = malloc (strlen (cp) + strlen (name) + 2);
+ if (tmp == NULL)
+ return NULL;
+
+ tmp = stpcpy (tmp, name);
+ *tmp++ = '.';
+ stpcpy (tmp, cp);
+ }
+
+ if (pos > count)
+ {
+ count += 5;
+ getnames = realloc (getnames, (count + 1) * sizeof (char *));
+ if (getnames == NULL)
+ return NULL;
+ }
+ getnames[pos] = tmp;
+ ++pos;
+ }
+ cp = strtok (NULL, ":");
+ }
+
+ getnames[pos] = NULL;
+
+ return getnames;
+}
+
+void
+nis_freenames (nis_name *names)
+{
+ int i = 0;
+
+ while (names[i] != NULL)
+ {
+ free (names[i]);
+ ++i;
+ }
+
+ free (names);
+}
+
+name_pos
+nis_dir_cmp (const nis_name n1, const nis_name n2)
+{
+ int len1, len2;
+
+ len1 = strlen (n1);
+ len2 = strlen (n2);
+
+ if (len1 == len2)
+ {
+ if (strcmp (n1, n2) == 0)
+ return SAME_NAME;
+ else
+ return NOT_SEQUENTIAL;
+ }
+
+ if (len1 < len2)
+ {
+ if (n2[len2 - len1 - 1] != '.')
+ return NOT_SEQUENTIAL;
+ else if (strcmp (&n2[len2 - len1], n1) == 0)
+ return HIGHER_NAME;
+ else
+ return NOT_SEQUENTIAL;
+ }
+ else
+ {
+ if (n1[len1 - len2 - 1] != '.')
+ return NOT_SEQUENTIAL;
+ else if (strcmp (&n1[len1 - len2], n2) == 0)
+ return LOWER_NAME;
+ else
+ return NOT_SEQUENTIAL;
+
+ }
+}
+
+void
+nis_destroy_object (nis_object *obj)
+{
+ nis_free_object (obj);
+}