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/*
rpc.c - rpc name lookup routines
Parts of this file were part of the nss_ldap library (as ldap-rpc.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>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif /* HAVE_STDINT_H */
#include "common.h"
#include "log.h"
#include "myldap.h"
#include "cfg.h"
#include "attmap.h"
/* ( nisSchema.2.5 NAME 'oncRpc' SUP top STRUCTURAL
* DESC 'Abstraction of an Open Network Computing (ONC)
* [RFC1057] Remote Procedure Call (RPC) binding.
* This class maps an ONC RPC number to a name.
* The distinguished value of the cn attribute denotes
* the RPC service's canonical name'
* MUST ( cn $ oncRpcNumber )
* MAY description )
*/
/* the search base for searches */
const char *rpc_bases[NSS_LDAP_CONFIG_MAX_BASES] = { NULL };
/* the search scope for searches */
int rpc_scope = LDAP_SCOPE_DEFAULT;
/* the basic search filter for searches */
const char *rpc_filter = "(objectClass=oncRpc)";
/* the attributes to request with searches */
const char *attmap_rpc_cn = "cn";
const char *attmap_rpc_oncRpcNumber = "oncRpcNumber";
/* the attribute list to request with searches */
static const char *rpc_attrs[3];
static int mkfilter_rpc_byname(const char *name, char *buffer, size_t buflen)
{
char safename[BUFLEN_SAFENAME];
/* escape attribute */
if (myldap_escape(name, safename, sizeof(safename)))
{
log_log(LOG_ERR, "mkfilter_rpc_byname(): safename buffer too small");
return -1;
}
/* build filter */
return mysnprintf(buffer, buflen, "(&%s(%s=%s))",
rpc_filter, attmap_rpc_cn, safename);
}
static int mkfilter_rpc_bynumber(int number, char *buffer, size_t buflen)
{
return mysnprintf(buffer, buflen, "(&%s(%s=%d))",
rpc_filter, attmap_rpc_oncRpcNumber, number);
}
void rpc_init(void)
{
int i;
/* set up search bases */
if (rpc_bases[0] == NULL)
for (i = 0; i < NSS_LDAP_CONFIG_MAX_BASES; i++)
rpc_bases[i] = nslcd_cfg->bases[i];
/* set up scope */
if (rpc_scope == LDAP_SCOPE_DEFAULT)
rpc_scope = nslcd_cfg->scope;
/* set up attribute list */
rpc_attrs[0] = attmap_rpc_cn;
rpc_attrs[1] = attmap_rpc_oncRpcNumber;
rpc_attrs[2] = NULL;
}
/* write a single rpc entry to the stream */
static int write_rpc(TFILE *fp, MYLDAP_ENTRY *entry, const char *reqname)
{
int32_t tmpint32, tmp2int32, tmp3int32;
const char *name;
const char **aliases;
const char **numbers;
char *tmp;
unsigned long number;
int i;
/* get the most canonical name */
name = myldap_get_rdn_value(entry, attmap_rpc_cn);
/* get the other names for the rpc entries */
aliases = myldap_get_values(entry, attmap_rpc_cn);
if ((aliases == NULL) || (aliases[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_rpc_cn);
return 0;
}
/* if the rpc name is not yet found, get the first entry */
if (name == NULL)
name = aliases[0];
/* check case of returned rpc entry */
if ((reqname != NULL) && (STR_CMP(reqname, name) != 0))
{
for (i = 0; (aliases[i] != NULL) && (STR_CMP(reqname, aliases[i]) != 0); i++)
/* nothing */ ;
if (aliases[i] == NULL)
return 0; /* neither the name nor any of the aliases matched */
}
/* get the rpc number */
numbers = myldap_get_values(entry, attmap_rpc_oncRpcNumber);
if ((numbers == NULL) || (numbers[0] == NULL))
{
log_log(LOG_WARNING, "%s: %s: missing",
myldap_get_dn(entry), attmap_rpc_oncRpcNumber);
return 0;
}
else if (numbers[1] != NULL)
{
log_log(LOG_WARNING, "%s: %s: multiple values",
myldap_get_dn(entry), attmap_rpc_oncRpcNumber);
}
errno = 0;
number = strtol(numbers[0], &tmp, 10);
if ((*(numbers[0]) == '\0') || (*tmp != '\0'))
{
log_log(LOG_WARNING, "%s: %s: non-numeric",
myldap_get_dn(entry), attmap_rpc_oncRpcNumber);
return 0;
}
else if ((errno != 0) || (number > UINT32_MAX))
{
log_log(LOG_WARNING, "%s: %s: out of range",
myldap_get_dn(entry), attmap_rpc_oncRpcNumber);
return 0;
}
/* write the entry */
WRITE_INT32(fp, NSLCD_RESULT_BEGIN);
WRITE_STRING(fp, name);
WRITE_STRINGLIST_EXCEPT(fp, aliases, name);
WRITE_INT32(fp, number);
return 0;
}
NSLCD_HANDLE(
rpc, byname, NSLCD_ACTION_RPC_BYNAME,
char name[BUFLEN_NAME];
char filter[BUFLEN_FILTER];
READ_STRING(fp, name);
log_setrequest("rpc=\"%s\"", name);,
mkfilter_rpc_byname(name, filter, sizeof(filter)),
write_rpc(fp, entry, name)
)
NSLCD_HANDLE(
rpc, bynumber, NSLCD_ACTION_RPC_BYNUMBER,
int number;
char filter[BUFLEN_FILTER];
READ_INT32(fp, number);
log_setrequest("rpc=%lu", (unsigned long int)number);,
mkfilter_rpc_bynumber(number, filter, sizeof(filter)),
write_rpc(fp, entry, NULL)
)
NSLCD_HANDLE(
rpc, all, NSLCD_ACTION_RPC_ALL,
const char *filter;
log_setrequest("rpc(all)");,
(filter = rpc_filter, 0),
write_rpc(fp, entry, NULL)
)
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