diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-network.c')
| -rw-r--r-- | nis/nss_nisplus/nisplus-network.c | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/nis/nss_nisplus/nisplus-network.c b/nis/nss_nisplus/nisplus-network.c new file mode 100644 index 0000000000..28580b6bc9 --- /dev/null +++ b/nis/nss_nisplus/nisplus-network.c @@ -0,0 +1,340 @@ +/* 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 <netdb.h> +#include <errno.h> +#include <ctype.h> +#include <string.h> +#include <arpa/inet.h> +#include <libc-lock.h> +#include <rpcsvc/nis.h> +#include <rpcsvc/nislib.h> + +#include "nss-nisplus.h" + +/* Get the declaration of the parser function. */ +#define ENTNAME netent +#define DATABASE "networks" +#define TRAILING_LIST_MEMBER n_aliases +#define TRAILING_LIST_SEPARATOR_P isspace +#include "../nss/nss_files/files-parse.c" +LINE_PARSER +("#", + { + char *addr; + + STRING_FIELD (result->n_name, isspace, 1); + + STRING_FIELD (addr, isspace, 1); + result->n_net = inet_network (addr); + + }) + +__libc_lock_define_initialized (static, lock) + +static nis_result *result = NULL; +static nis_name *names = NULL; + +#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_netent (nis_result *result, struct netent *network, + char *buffer, size_t buflen) +{ + char *p = buffer; + size_t room_left = buflen; + int i; + struct parser_data *data = (void *) buffer; + + if (result == NULL) + return -1; + + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) || + 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, + "networks_tbl") != 0 || + result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 3) + return -1; + + /* Generate the network entry format and use the normal parser */ + if (NISENTRYLEN (0, 0, result) +1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + + memset (p, '\0', room_left); + + strncpy (p, NISENTRYVAL (0, 0, result), NISENTRYLEN (0, 0, result)); + room_left -= (NISENTRYLEN (0, 0, result) +1); + + if (NISENTRYLEN (0, 2, result) +1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + strcat (p, "\t"); + strncat (p, NISENTRYVAL (0, 2, result), NISENTRYLEN (0, 2, result)); + room_left -= (NISENTRYLEN (0, 2, result) + 1); + /* + 1: We overwrite the last \0 */ + + for (i = 1; i < result->objects.objects_len; i++) + /* XXX should we start with i = 0 or with i = 1 ? */ + { + if (NISENTRYLEN (i, 1, result) +1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + strcat (p, " "); + strncat (p, NISENTRYVAL (i, 1, result), NISENTRYLEN (i, 1, result)); + room_left -= (NISENTRYLEN (i, 1, result) + 1); + } + + return _nss_files_parse_netent (p, network, data, buflen); +} + +enum nss_status +_nss_nisplus_setnetent (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_endnetent (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_getnetent_r (struct netent *network, char *buffer, + size_t buflen, int *herrnop) +{ + int parse_res; + + /* Get the next entry until we found a correct one. */ + do + { + if (result == NULL) + { + names = nis_getnames("networks.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) + { + int retval; + + retval = niserr2nss (result->status); + if (retval == NSS_STATUS_TRYAGAIN) + { + *herrnop = NETDB_INTERNAL; + __set_errno (EAGAIN); + } + return retval; + } + } + else + { + nis_result *res; + + res = nis_next_entry(names[0], &result->cookie); + nis_freeresult (result); + result = res; + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + int retval; + + retval = niserr2nss (result->status); + if (retval == NSS_STATUS_TRYAGAIN) + { + *herrnop = NETDB_INTERNAL; + __set_errno (EAGAIN); + } + return retval; + } + } + + parse_res = _nss_nisplus_parse_netent (result, network, buffer, buflen); + if (!parse_res && errno == ERANGE) + { + *herrnop = NETDB_INTERNAL; + return NSS_STATUS_TRYAGAIN; + } + + } while (!parse_res); + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nisplus_getnetent_r (struct netent *result, char *buffer, + size_t buflen, int *herrnop) +{ + int status; + + __libc_lock_lock (lock); + + status = internal_nisplus_getnetent_r (result, buffer, buflen, herrnop); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_nisplus_getnetbyname_r (const char *name, struct netent *network, + char *buffer, size_t buflen, int *herrnop) +{ + int parse_res, retval; + + if (name == NULL) + { + __set_errno (EINVAL); + *herrnop = NETDB_INTERNAL; + return NSS_STATUS_UNAVAIL; + } + else + { + nis_result *result; + char buf[strlen (name) + 255]; + + + /* Search at first in the alias list, and use the correct name + for the next search */ + sprintf(buf, "[name=%s],networks.org_dir", name); + result = nis_list(buf, EXPAND_NAME, NULL, NULL); + + /* If we do not find it, try it as original name. But if the + database is correct, we should find it in the first case, too */ + if ((result->status != NIS_SUCCESS && + result->status != NIS_S_SUCCESS) || + 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, + "networks_tbl") != 0 || + result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 3) + sprintf(buf, "[cname=%s],networks.org_dir", name); + else + sprintf(buf, "[cname=%s],networks.org_dir", NISENTRYVAL(0, 0, result)); + + nis_freeresult (result); + result = nis_list(buf, EXPAND_NAME, NULL, NULL); + + retval = niserr2nss (result->status); + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + { + __set_errno (EAGAIN); + *herrnop = NETDB_INTERNAL; + } + nis_freeresult (result); + return retval; + } + + parse_res = _nss_nisplus_parse_netent (result, network, buffer, buflen); + + nis_freeresult (result); + + if (parse_res) + return NSS_STATUS_SUCCESS; + + *herrnop = NETDB_INTERNAL; + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } +} + +/* XXX type is ignored, SUN's NIS+ table doesn't support it */ +enum nss_status +_nss_nisplus_getnetbyaddr_r (const unsigned long addr, const int type, + struct netent *network, + char *buffer, size_t buflen, int *herrnop) +{ + int parse_res, retval; + nis_result *result; + char buf[1024]; + struct in_addr in; + + in = inet_makeaddr (addr, 0); + snprintf(buf, sizeof (buf) - 1, "[addr=%s],networks.org_dir", + inet_ntoa (in)); + + result = nis_list(buf, EXPAND_NAME, NULL, NULL); + + retval = niserr2nss (result->status); + if (retval != NSS_STATUS_SUCCESS) + { + if (retval == NSS_STATUS_TRYAGAIN) + { + __set_errno (EAGAIN); + *herrnop = NETDB_INTERNAL; + } + nis_freeresult (result); + return retval; + } + + parse_res = _nss_nisplus_parse_netent (result, network, buffer, buflen); + + nis_freeresult (result); + + if (parse_res) + return NSS_STATUS_SUCCESS; + + *herrnop = NETDB_INTERNAL; + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; +} |