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/*
network.c - network address entry lookup routines
Parts of this file were part of the nss_ldap library (as ldap-network.c)
which has been forked into the nss-pam-ldapd library.
Copyright (C) 1997-2005 Luke Howard
Copyright (C) 2006 West Consulting
Copyright (C) 2006-2014 Arthur de Jong
This 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.
This 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 this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include "common.h"
#include "log.h"
#include "myldap.h"
#include "cfg.h"
#include "attmap.h"
/* ( nisSchema.2.7 NAME 'ipNetwork' SUP top STRUCTURAL
* DESC 'Abstraction of a network. The distinguished value of
* MUST ( cn $ ipNetworkNumber )
* MAY ( ipNetmaskNumber $ l $ description $ manager ) )
*/
/* the search base for searches */
const char *network_bases[NSS_LDAP_CONFIG_MAX_BASES] = { NULL };
/* the search scope for searches */
int network_scope = LDAP_SCOPE_DEFAULT;
/* the basic search filter for searches */
const char *network_filter = "(objectClass=ipNetwork)";
/* the attributes used in searches */
const char *attmap_network_cn = "cn";
const char *attmap_network_ipNetworkNumber = "ipNetworkNumber";
/* the attribute list to request with searches */
static const char *network_attrs[3];
/* create a search filter for searching a network entry
by name, return -1 on errors */
static int mkfilter_network_byname(const char *name,
char *buffer, size_t buflen)
{
char safename[BUFLEN_HOSTNAME];
/* escape attribute */
if (myldap_escape(name, safename, sizeof(safename)))
{
log_log(LOG_ERR, "mkfilter_network_byname(): safename buffer too small");
return -1;
}
/* build filter */
return mysnprintf(buffer, buflen, "(&%s(%s=%s))",
network_filter, attmap_network_cn, safename);
}
static int mkfilter_network_byaddr(const char *addrstr,
char *buffer, size_t buflen)
{
char safeaddr[64];
/* escape attribute */
if (myldap_escape(addrstr, safeaddr, sizeof(safeaddr)))
{
log_log(LOG_ERR, "mkfilter_network_byaddr(): safeaddr buffer too small");
return -1;
}
/* build filter */
return mysnprintf(buffer, buflen, "(&%s(%s=%s))",
network_filter, attmap_network_ipNetworkNumber, safeaddr);
}
void network_init(void)
{
int i;
/* set up search bases */
if (network_bases[0] == NULL)
for (i = 0; i < NSS_LDAP_CONFIG_MAX_BASES; i++)
network_bases[i] = nslcd_cfg->bases[i];
/* set up scope */
if (network_scope == LDAP_SCOPE_DEFAULT)
network_scope = nslcd_cfg->scope;
/* set up attribute list */
network_attrs[0] = attmap_network_cn;
network_attrs[1] = attmap_network_ipNetworkNumber;
network_attrs[2] = NULL;
}
/* write a single network entry to the stream */
static int write_network(TFILE *fp, MYLDAP_ENTRY *entry)
{
int32_t tmpint32, tmp2int32, tmp3int32;
int numaddr, i;
const char *networkname;
const char **networknames;
const char **addresses;
/* get the most canonical name */
networkname = myldap_get_rdn_value(entry, attmap_network_cn);
/* get the other names for the network */
networknames = myldap_get_values(entry, attmap_network_cn);
if ((networknames == NULL) || (networknames[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_network_cn);
return 0;
}
/* if the networkname is not yet found, get the first entry from networknames */
if (networkname == NULL)
networkname = networknames[0];
/* get the addresses */
addresses = myldap_get_values(entry, attmap_network_ipNetworkNumber);
if ((addresses == NULL) || (addresses[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_network_ipNetworkNumber);
return 0;
}
/* write the entry */
WRITE_INT32(fp, NSLCD_RESULT_BEGIN);
WRITE_STRING(fp, networkname);
WRITE_STRINGLIST_EXCEPT(fp, networknames, networkname);
for (numaddr = 0; addresses[numaddr] != NULL; numaddr++)
/* noting */ ;
WRITE_INT32(fp, numaddr);
for (i = 0; i < numaddr; i++)
{
WRITE_ADDRESS(fp, entry, attmap_network_ipNetworkNumber, addresses[i]);
}
return 0;
}
NSLCD_HANDLE(
network, byname, NSLCD_ACTION_NETWORK_BYNAME,
char name[BUFLEN_HOSTNAME];
char filter[BUFLEN_FILTER];
READ_STRING(fp, name);
log_setrequest("network=\"%s\"", name);,
mkfilter_network_byname(name, filter, sizeof(filter)),
write_network(fp, entry)
)
NSLCD_HANDLE(
network, byaddr, NSLCD_ACTION_NETWORK_BYADDR,
int af;
char addr[64];
int len = sizeof(addr);
char addrstr[64];
char filter[BUFLEN_FILTER];
READ_ADDRESS(fp, addr, len, af);
/* translate the address to a string */
if (inet_ntop(af, addr, addrstr, sizeof(addrstr)) == NULL)
{
log_log(LOG_WARNING, "unable to convert address to string");
return -1;
}
log_setrequest("network=%s", addrstr);,
mkfilter_network_byaddr(addrstr, filter, sizeof(filter)),
write_network(fp, entry)
)
NSLCD_HANDLE(
network, all, NSLCD_ACTION_NETWORK_ALL,
const char *filter;
log_setrequest("network(all)");,
(filter = network_filter, 0),
write_network(fp, entry)
)
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