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-rw-r--r--nis/nss_nis/nis-ethers.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/nis/nss_nis/nis-ethers.c b/nis/nss_nis/nis-ethers.c
new file mode 100644
index 0000000000..26449720bb
--- /dev/null
+++ b/nis/nss_nis/nis-ethers.c
@@ -0,0 +1,264 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
+
+ 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 <nss.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+#include <netinet/if_ether.h>
+
+#include "nss-nis.h"
+
+/* Protect global state against multiple changers */
+__libc_lock_define_initialized (static, lock)
+
+struct ether
+{
+ char *e_name;
+ struct ether_addr e_addr;
+};
+
+static bool_t new_start = 1;
+static char *oldkey = NULL;
+static int oldkeylen = 0;
+
+enum nss_status
+_nss_nis_setetherent (void)
+{
+ __libc_lock_lock (lock);
+
+ new_start = 1;
+ if (oldkey != NULL)
+ {
+ free (oldkey);
+ oldkey = NULL;
+ oldkeylen = 0;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_endetherent (void)
+{
+ __libc_lock_lock (lock);
+
+ new_start = 1;
+ if (oldkey != NULL)
+ {
+ free (oldkey);
+ oldkey = NULL;
+ oldkeylen = 0;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nis_getetherent_r (struct ether *eth, char *buffer, size_t buflen)
+{
+ char *domain, *result, *outkey;
+ int len, keylen, parse_res;
+
+ if (yp_get_default_domain (&domain))
+ return NSS_STATUS_UNAVAIL;
+
+ /* Get the next entry until we found a correct one. */
+ do
+ {
+ enum nss_status retval;
+ char *p;
+
+ if (new_start)
+ retval = yperr2nss (yp_first (domain, "ethers.byaddr",
+ &outkey, &keylen, &result, &len));
+ else
+ retval = yperr2nss ( yp_next (domain, "ethers.byaddr",
+ oldkey, oldkeylen,
+ &outkey, &keylen, &result, &len));
+
+ if (retval != NSS_STATUS_SUCCESS)
+ {
+ if (retval == NSS_STATUS_TRYAGAIN)
+ __set_errno (EAGAIN);
+ return retval;
+ }
+
+ if (len + 1 > buflen)
+ {
+ free (result);
+ __set_errno (ERANGE);
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ p = strncpy (buffer, result, len);
+ buffer[len] = '\0';
+ while (isspace (*p))
+ ++p;
+ free (result);
+
+ parse_res = _nss_files_parse_etherent (p, eth, buffer, buflen);
+ if (!parse_res && errno == ERANGE)
+ return NSS_STATUS_TRYAGAIN;
+
+ free (oldkey);
+ oldkey = outkey;
+ oldkeylen = keylen;
+ new_start = 0;
+ }
+ while (!parse_res);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getetherent_r (struct ether *result, char *buffer, size_t buflen)
+{
+ int status;
+
+ __libc_lock_lock (lock);
+
+ status = internal_nis_getetherent_r (result, buffer, buflen);
+
+ __libc_lock_unlock (lock);
+
+ return status;
+}
+
+enum nss_status
+_nss_nis_getethernam_r (const char *name, struct ether *eth,
+ char *buffer, size_t buflen)
+{
+ enum nss_status retval;
+ char *domain, *result, *p;
+ int len, parse_res;
+
+ if (name == NULL)
+ {
+ __set_errno (EINVAL);
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ if (yp_get_default_domain (&domain))
+ return NSS_STATUS_UNAVAIL;
+
+ retval = yperr2nss (yp_match (domain, "ethers.byname", name,
+ strlen (name), &result, &len));
+
+ if (retval != NSS_STATUS_SUCCESS)
+ {
+ if (retval == NSS_STATUS_TRYAGAIN)
+ __set_errno (EAGAIN);
+ return retval;
+ }
+
+ if (len + 1 > buflen)
+ {
+ free (result);
+ __set_errno (ERANGE);
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ p = strncpy (buffer, result, len);
+ buffer[len] = '\0';
+ while (isspace (*p))
+ ++p;
+ free (result);
+
+ parse_res = _nss_files_parse_etherent (p, eth, buffer, buflen);
+
+ if (!parse_res)
+ {
+ if (errno == ERANGE)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ return NSS_STATUS_NOTFOUND;
+ }
+ else
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_getetherbyaddr_r (struct ether_addr *addr, struct ether *eth,
+ char *buffer, size_t buflen)
+{
+ enum nss_status retval;
+ char *domain, *result, *p;
+ int len, nlen, parse_res;
+ char buf[33];
+
+ if (addr == NULL)
+ {
+ __set_errno (EINVAL);
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ if (yp_get_default_domain (&domain))
+ return NSS_STATUS_UNAVAIL;
+
+ nlen = sprintf (buf, "%x:%x:%x:%x:%x:%x",
+ (int) addr->ether_addr_octet[0],
+ (int) addr->ether_addr_octet[1],
+ (int) addr->ether_addr_octet[2],
+ (int) addr->ether_addr_octet[3],
+ (int) addr->ether_addr_octet[4],
+ (int) addr->ether_addr_octet[5]);
+
+ retval = yperr2nss (yp_match (domain, "ethers.byaddr", buf,
+ nlen, &result, &len));
+
+ if (retval != NSS_STATUS_SUCCESS)
+ {
+ if (retval == NSS_STATUS_TRYAGAIN)
+ __set_errno (EAGAIN);
+ return retval;
+ }
+
+ if (len + 1 > buflen)
+ {
+ free (result);
+ __set_errno (ERANGE);
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ p = strncpy (buffer, result, len);
+ buffer[len] = '\0';
+ while (isspace (*p))
+ ++p;
+ free (result);
+
+ parse_res = _nss_files_parse_etherent (p, eth, buffer, buflen);
+
+ if (!parse_res)
+ {
+ if (errno == ERANGE)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ return NSS_STATUS_NOTFOUND;
+ }
+ else
+ return NSS_STATUS_SUCCESS;
+}