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Diffstat (limited to 'nis/nss_nisplus/nisplus-ethers.c')
-rw-r--r--nis/nss_nisplus/nisplus-ethers.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/nis/nss_nisplus/nisplus-ethers.c b/nis/nss_nisplus/nisplus-ethers.c
new file mode 100644
index 0000000000..ac3e06960a
--- /dev/null
+++ b/nis/nss_nisplus/nisplus-ethers.c
@@ -0,0 +1,278 @@
+/* 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 <nss.h>
+#include <errno.h>
+#include <ctype.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <netdb.h>
+#include <netinet/ether.h>
+#include <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+#include <netinet/if_ether.h>
+
+#include "nss-nisplus.h"
+
+__libc_lock_define_initialized (static, lock)
+
+static nis_result *result = NULL;
+static nis_name *names = NULL;
+
+/* Because the `ethers' lookup does not fit so well in the scheme so
+ we define a dummy struct here which helps us to use the available
+ functions. */
+struct etherent
+{
+ const char *e_name;
+ struct ether_addr e_addr;
+};
+struct etherent_data {};
+
+#define ENTNAME etherent
+#define DATABASE "ethers"
+#include "../../nss/nss_files/files-parse.c"
+LINE_PARSER
+("#",
+ /* Read the ethernet address: 6 x 8bit hexadecimal number. */
+ {
+ size_t cnt;
+
+ for (cnt = 0; cnt < 6; ++cnt)
+ {
+ unsigned int number;
+
+ if (cnt < 5)
+ INT_FIELD (number, ISCOLON , 0, 16, (unsigned int))
+ else
+ INT_FIELD (number, isspace, 0, 16, (unsigned int))
+
+ if (number > 0xff)
+ return 0;
+ result->e_addr.ether_addr_octet[cnt] = number;
+ }
+ };
+ STRING_FIELD (result->e_name, isspace, 1);
+ )
+
+#define NISENTRYVAL(idx,col,res) \
+ ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val)
+
+#define NISENTRYLEN(idx,col,res) \
+ ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len)
+
+static int
+_nss_nisplus_parse_etherent (nis_result *result, struct etherent *ether,
+ char *buffer, size_t buflen)
+{
+ char *p = buffer;
+ size_t room_left = buflen;
+ struct parser_data *data = (void *) buffer;
+
+ if (result == NULL)
+ return -1;
+
+ if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) ||
+ result->objects.objects_len != 1 ||
+ result->objects.objects_val[0].zo_data.zo_type != ENTRY_OBJ ||
+ strcmp(result->objects.objects_val[0].zo_data.objdata_u.en_data.en_type,
+ "ethers_tbl") != 0 ||
+ result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 2)
+ return -1;
+
+ memset (p, '\0', room_left);
+
+ /* Generate the ether entry format and use the normal parser */
+ if (NISENTRYLEN (0, 0, result) +1 > room_left)
+ {
+ __set_errno (ERANGE);
+ return -1;
+ }
+ strncpy (p, NISENTRYVAL (0, 0, result), NISENTRYLEN (0, 0, result));
+ room_left -= (NISENTRYLEN (0, 0, result) +1);
+
+ if (NISENTRYLEN (0, 1, result) +1 > room_left)
+ {
+ __set_errno (ERANGE);
+ return -1;
+ }
+ strcat (p, "\t");
+ strncat (p, NISENTRYVAL (0, 1, result), NISENTRYLEN (0, 1, result));
+ room_left -= (NISENTRYLEN (0, 1, result) + 1);
+
+ return _nss_files_parse_etherent (p,ether, data, buflen);
+}
+
+enum nss_status
+_nss_nisplus_setetherent (void)
+{
+ __libc_lock_lock (lock);
+
+ if (result)
+ nis_freeresult (result);
+ result = NULL;
+ if (names)
+ {
+ nis_freenames (names);
+ names = NULL;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_endetherent (void)
+{
+ __libc_lock_lock (lock);
+
+ if (result)
+ nis_freeresult (result);
+ result = NULL;
+ if (names)
+ {
+ nis_freenames (names);
+ names = NULL;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nisplus_getetherent_r (struct etherent *ether, char *buffer,
+ size_t buflen)
+{
+ int parse_res;
+
+ /* Get the next entry until we found a correct one. */
+ do
+ {
+ if (result == NULL)
+ {
+ names = nis_getnames("ethers.org_dir");
+ if (names == NULL || names[0] == NULL)
+ return NSS_STATUS_UNAVAIL;
+
+ result = nis_first_entry(names[0]);
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+ }
+ else
+ {
+ nis_result *res2;
+
+ res2 = nis_next_entry(names[0], &result->cookie);
+ nis_freeresult (result);
+ result = res2;
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+ }
+
+ parse_res = _nss_nisplus_parse_etherent (result, ether, buffer, buflen);
+ } while (!parse_res);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_getetherent_r (struct etherent *result, char *buffer,
+ size_t buflen)
+{
+ int status;
+
+ __libc_lock_lock (lock);
+
+ status = internal_nisplus_getetherent_r (result, buffer, buflen);
+
+ __libc_lock_unlock (lock);
+
+ return status;
+}
+
+enum nss_status
+_nss_nisplus_gethostton_r (const char *name, struct etherent *eth,
+ char *buffer, size_t buflen)
+{
+ int parse_res;
+
+ if (name == NULL)
+ return NSS_STATUS_NOTFOUND;
+ else
+ {
+ nis_result *result;
+ char buf[strlen (name) + 255];
+
+ sprintf(buf, "[name=%s],ethers.org_dir", name);
+
+ result = nis_list(buf, EXPAND_NAME, NULL, NULL);
+
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+
+ parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, buflen);
+
+ if (parse_res)
+ return NSS_STATUS_SUCCESS;
+
+ if (!parse_res && errno == ERANGE)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ return NSS_STATUS_NOTFOUND;
+ }
+}
+
+enum nss_status
+_nss_nisplus_getntohost_r (const struct ether_addr *addr,
+ struct etherent *eth,
+ char *buffer, size_t buflen)
+{
+ int parse_res;
+ nis_result *result;
+ char buf[255];
+
+ if (addr == NULL)
+ {
+ __set_errno (EINVAL);
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ memset (&buf, '\0', sizeof (buf));
+ snprintf(buf, sizeof (buf), "[addr=%x:%x:%x:%x:%x:%x],ethers.org_dir",
+ addr->ether_addr_octet[0], addr->ether_addr_octet[1],
+ addr->ether_addr_octet[2], addr->ether_addr_octet[3],
+ addr->ether_addr_octet[4], addr->ether_addr_octet[5]);
+
+ result = nis_list(buf, EXPAND_NAME, NULL, NULL);
+
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+
+ parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, buflen);
+
+ if (parse_res)
+ return NSS_STATUS_SUCCESS;
+
+ if (!parse_res && errno == ERANGE)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ return NSS_STATUS_NOTFOUND;
+}
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