diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-ethers.c')
-rw-r--r-- | nis/nss_nisplus/nisplus-ethers.c | 356 |
1 files changed, 0 insertions, 356 deletions
diff --git a/nis/nss_nisplus/nisplus-ethers.c b/nis/nss_nisplus/nisplus-ethers.c deleted file mode 100644 index 51aa6a6e83..0000000000 --- a/nis/nss_nisplus/nisplus-ethers.c +++ /dev/null @@ -1,356 +0,0 @@ -/* Copyright (C) 1997-2020 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <https://www.gnu.org/licenses/>. */ - -#include <atomic.h> -#include <ctype.h> -#include <errno.h> -#include <inttypes.h> -#include <netdb.h> -#include <nss.h> -#include <string.h> -#include <netinet/ether.h> -#include <netinet/if_ether.h> -#include <rpcsvc/nis.h> -#include <libc-lock.h> - -#include "nss-nisplus.h" - -__libc_lock_define_initialized (static, lock) - -static nis_result *result; -static nis_name tablename_val; -static u_long tablename_len; - - -#define NISENTRYVAL(idx, col, res) \ - (NIS_RES_OBJECT (res)[idx].zo_data.objdata_u.en_data.en_cols.en_cols_val[col].ec_value.ec_value_val) - -#define NISENTRYLEN(idx, col, res) \ - (NIS_RES_OBJECT (res)[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, int *errnop) -{ - char *p = buffer; - size_t room_left = buflen; - - if (result == NULL) - return 0; - - if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) - || NIS_RES_NUMOBJ (result) != 1 - || __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ - || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, - "ethers_tbl") != 0 - || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 2) - return 0; - - /* Generate the ether entry format and use the normal parser */ - if (NISENTRYLEN (0, 0, result) + 1 > room_left) - { - *errnop = ERANGE; - return -1; - } - char *cp = __stpncpy (p, NISENTRYVAL (0, 0, result), - NISENTRYLEN (0, 0, result)); - *cp = '\0'; - room_left -= NISENTRYLEN (0, 0, result) + 1; - ether->e_name = p; - - struct ether_addr *ea = ether_aton (NISENTRYVAL (0, 1, result)); - if (ea == NULL) - { - *errnop = EINVAL; - return -2; - } - - ether->e_addr = *ea; - - return 1; -} - -static enum nss_status -_nss_create_tablename (int *errnop) -{ - if (tablename_val == NULL) - { - const char *local_dir = nis_local_directory (); - size_t local_dir_len = strlen (local_dir); - static const char prefix[] = "ethers.org_dir."; - - char *p = malloc (sizeof (prefix) + local_dir_len); - if (p == NULL) - { - *errnop = errno; - return NSS_STATUS_TRYAGAIN; - } - - memcpy (__stpcpy (p, prefix), local_dir, local_dir_len + 1); - - tablename_len = sizeof (prefix) - 1 + local_dir_len; - - atomic_write_barrier (); - - tablename_val = p; - } - return NSS_STATUS_SUCCESS; -} - - -enum nss_status -_nss_nisplus_setetherent (int stayopen) -{ - enum nss_status status; - int err; - - status = NSS_STATUS_SUCCESS; - - __libc_lock_lock (lock); - - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } - - if (_nss_create_tablename (&err) != NSS_STATUS_SUCCESS) - status = NSS_STATUS_UNAVAIL; - - __libc_lock_unlock (lock); - - return status; -} - -enum nss_status -_nss_nisplus_endetherent (void) -{ - __libc_lock_lock (lock); - - if (result != NULL) - { - nis_freeresult (result); - result = 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 *errnop) -{ - if (tablename_val == NULL) - { - enum nss_status status = _nss_create_tablename (errnop); - - if (status != NSS_STATUS_SUCCESS) - return status; - } - - /* Get the next entry until we found a correct one. */ - int parse_res; - do - { - nis_result *saved_result; - - if (result == NULL) - { - saved_result = NULL; - result = nis_first_entry (tablename_val); - if (result == NULL) - { - *errnop = errno; - return NSS_STATUS_TRYAGAIN; - } - if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) - return niserr2nss (result->status); - } - else - { - saved_result = result; - result = nis_next_entry (tablename_val, &result->cookie); - if (result == NULL) - { - *errnop = errno; - return NSS_STATUS_TRYAGAIN; - } - if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) - { - nis_freeresult (saved_result); - return niserr2nss (result->status); - } - } - - parse_res = _nss_nisplus_parse_etherent (result, ether, buffer, - buflen, errnop); - if (parse_res == -1) - { - nis_freeresult (result); - result = saved_result; - return NSS_STATUS_TRYAGAIN; - } - - if (saved_result != NULL) - nis_freeresult (saved_result); - - } - while (!parse_res); - - return NSS_STATUS_SUCCESS; -} - -enum nss_status -_nss_nisplus_getetherent_r (struct etherent *result, char *buffer, - size_t buflen, int *errnop) -{ - int status; - - __libc_lock_lock (lock); - - status = internal_nisplus_getetherent_r (result, buffer, buflen, errnop); - - __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 *errnop) -{ - if (tablename_val == NULL) - { - enum nss_status status = _nss_create_tablename (errnop); - - if (status != NSS_STATUS_SUCCESS) - return status; - } - - if (name == NULL) - { - *errnop = EINVAL; - return NSS_STATUS_UNAVAIL; - } - - char buf[strlen (name) + 9 + tablename_len]; - int olderr = errno; - - snprintf (buf, sizeof (buf), "[name=%s],%s", name, tablename_val); - - nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, - NULL, NULL); - - if (result == NULL) - { - *errnop = ENOMEM; - return NSS_STATUS_TRYAGAIN; - } - - if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS)) - { - enum nss_status status = niserr2nss (result->status); - nis_freeresult (result); - return status; - } - - int parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, - buflen, errnop); - - /* We do not need the lookup result anymore. */ - nis_freeresult (result); - - if (__glibc_unlikely (parse_res < 1)) - { - __set_errno (olderr); - - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; - - return NSS_STATUS_NOTFOUND; - } - - return NSS_STATUS_SUCCESS; -} - -enum nss_status -_nss_nisplus_getntohost_r (const struct ether_addr *addr, struct etherent *eth, - char *buffer, size_t buflen, int *errnop) -{ - if (tablename_val == NULL) - { - __libc_lock_lock (lock); - - enum nss_status status = _nss_create_tablename (errnop); - - __libc_lock_unlock (lock); - - if (status != NSS_STATUS_SUCCESS) - return status; - } - - if (addr == NULL) - { - *errnop = EINVAL; - return NSS_STATUS_UNAVAIL; - } - - char buf[26 + tablename_len]; - - snprintf (buf, sizeof (buf), - "[addr=%" PRIx8 ":%" PRIx8 ":%" PRIx8 ":%" PRIx8 ":%" PRIx8 - ":%" PRIx8 "],%s", - 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], - tablename_val); - - nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, - NULL, NULL); - - if (result == NULL) - { - *errnop = ENOMEM; - return NSS_STATUS_TRYAGAIN; - } - - if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS)) - { - enum nss_status status = niserr2nss (result->status); - nis_freeresult (result); - return status; - } - - int parse_res = _nss_nisplus_parse_etherent (result, eth, buffer, - buflen, errnop); - - /* We do not need the lookup result anymore. */ - nis_freeresult (result); - - if (__glibc_unlikely (parse_res < 1)) - { - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; - - return NSS_STATUS_NOTFOUND; - } - - return NSS_STATUS_SUCCESS; -} |