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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, 2007, 2009, 2010, 2011, 2012 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 <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[300];
/* escape attribute */
if (myldap_escape(name,safename,sizeof(safename)))
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->ldc_bases[i];
/* set up scope */
if (rpc_scope==LDAP_SCOPE_DEFAULT)
rpc_scope=nslcd_cfg->ldc_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;
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 here */ ;
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,
char name[256];
char filter[1024];
READ_STRING(fp,name);
log_setrequest("rpc=\"%s\"",name);,
NSLCD_ACTION_RPC_BYNAME,
mkfilter_rpc_byname(name,filter,sizeof(filter)),
write_rpc(fp,entry,name)
)
NSLCD_HANDLE(
rpc,bynumber,
int number;
char filter[1024];
READ_INT32(fp,number);
log_setrequest("rpc=%d",number);,
NSLCD_ACTION_RPC_BYNUMBER,
mkfilter_rpc_bynumber(number,filter,sizeof(filter)),
write_rpc(fp,entry,NULL)
)
NSLCD_HANDLE(
rpc,all,
const char *filter;
log_setrequest("rpc(all)");,
NSLCD_ACTION_RPC_ALL,
(filter=rpc_filter,0),
write_rpc(fp,entry,NULL)
)
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