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/*
service.c - NSS lookup functions for services database
Copyright (C) 2006 West Consulting
Copyright (C) 2006, 2007, 2008, 2010 Arthur de Jong
Copyright (C) 2010 Symas Corporation
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 <string.h>
#include <errno.h>
#include "prototypes.h"
#include "common.h"
#include "compat/attrs.h"
/* read a single services result entry from the stream */
static nss_status_t read_servent(
TFILE *fp,struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
int32_t tmpint32,tmp2int32,tmp3int32;
size_t bufptr=0;
READ_BUF_STRING(fp,result->s_name);
READ_BUF_STRINGLIST(fp,result->s_aliases);
/* store port number in network byte order */
READ_TYPE(fp,tmpint32,int32_t);
result->s_port=htons((uint16_t)tmpint32);
READ_BUF_STRING(fp,result->s_proto);
/* we're done */
return NSS_STATUS_SUCCESS;
}
#ifdef NSS_FLAVOUR_GLIBC
/* get a service entry by name and protocol */
nss_status_t _nss_ldap_getservbyname_r(
const char *name,const char *protocol,struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYGEN(NSLCD_ACTION_SERVICE_BYNAME,
WRITE_STRING(fp,name);WRITE_STRING(fp,protocol),
read_servent(fp,result,buffer,buflen,errnop));
}
/* get a service entry by port and protocol */
nss_status_t _nss_ldap_getservbyport_r(
int port,const char *protocol,struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYGEN(NSLCD_ACTION_SERVICE_BYNUMBER,
WRITE_INT32(fp,ntohs(port));WRITE_STRING(fp,protocol),
read_servent(fp,result,buffer,buflen,errnop));
}
/* thread-local file pointer to an ongoing request */
static __thread TFILE *serventfp;
/* open request to get all services */
nss_status_t _nss_ldap_setservent(int UNUSED(stayopen))
{
NSS_SETENT(serventfp);
}
/* read a single returned service definition */
nss_status_t _nss_ldap_getservent_r(
struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_GETENT(serventfp,NSLCD_ACTION_SERVICE_ALL,
read_servent(serventfp,result,buffer,buflen,errnop));
}
/* close the stream opened by setservent() above */
nss_status_t _nss_ldap_endservent(void)
{
NSS_ENDENT(serventfp);
}
#endif /* NSS_FLAVOUR_GLIBC */
#ifdef NSS_FLAVOUR_SOLARIS
#ifdef HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN
static nss_status_t read_servstring(TFILE *fp,nss_XbyY_args_t *args)
{
struct servent result;
nss_status_t retv;
char *buffer;
size_t buflen;
int i;
/* read the servent */
retv=read_servent(fp,&result,NSS_ARGS(args)->buf.buffer,args->buf.buflen,&errno);
if (retv!=NSS_STATUS_SUCCESS)
return retv;
/* allocate a temporary buffer */
buflen=args->buf.buflen;
buffer=(char *)malloc(buflen);
/* build the formatted string */
/* FIXME: implement proper buffer size checking */
sprintf(buffer,"%s %d/%s",result.s_name,result.s_port,result.s_proto);
if (result.s_aliases)
for (i=0;result.s_aliases[i];i++)
{
strcat(buffer," ");
strcat(buffer,result.s_aliases[i]);
}
/* copy the result back to the result buffer and free the temporary one */
strcpy(NSS_ARGS(args)->buf.buffer,buffer);
free(buffer);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
return NSS_STATUS_SUCCESS;
}
#define READ_RESULT(fp) \
NSS_ARGS(args)->buf.result? \
read_servent(fp,(struct servent *)NSS_ARGS(args)->buf.result,NSS_ARGS(args)->buf.buffer,NSS_ARGS(args)->buf.buflen,&errno): \
read_servstring(fp,args); \
if ((NSS_ARGS(args)->buf.result)&&(retv==NSS_STATUS_SUCCESS)) \
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
#else /* not HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
#define READ_RESULT(fp) \
read_servent(fp,(struct servent *)NSS_ARGS(args)->buf.result,NSS_ARGS(args)->buf.buffer,NSS_ARGS(args)->buf.buflen,&errno); \
if (retv==NSS_STATUS_SUCCESS) \
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
#endif /* not HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
static nss_status_t services_getservbyname(nss_backend_t UNUSED(*be),void *args)
{
NSS_BYGEN(NSLCD_ACTION_SERVICE_BYNAME,
WRITE_STRING(fp,NSS_ARGS(args)->key.serv.serv.name);
WRITE_STRING(fp,NSS_ARGS(args)->key.serv.proto),
READ_RESULT(fp));
}
static nss_status_t services_getservbyport(nss_backend_t UNUSED(*be),void *args)
{
NSS_BYGEN(NSLCD_ACTION_SERVICE_BYNUMBER,
WRITE_INT32(fp,ntohs(NSS_ARGS(args)->key.serv.serv.port));
WRITE_STRING(fp,NSS_ARGS(args)->key.serv.proto),
READ_RESULT(fp));
}
static nss_status_t services_setservent(nss_backend_t *be,void UNUSED(*args))
{
NSS_SETENT(LDAP_BE(be)->fp);
}
static nss_status_t services_getservent(nss_backend_t *be,void *args)
{
NSS_GETENT(LDAP_BE(be)->fp,NSLCD_ACTION_SERVICE_ALL,
READ_RESULT(LDAP_BE(be)->fp));
}
static nss_status_t services_endservent(nss_backend_t *be,void UNUSED(*args))
{
NSS_ENDENT(LDAP_BE(be)->fp);
}
static nss_backend_op_t services_ops[]={
nss_ldap_destructor,
services_endservent,
services_setservent,
services_getservent,
services_getservbyname,
services_getservbyport
};
nss_backend_t *_nss_ldap_services_constr(const char UNUSED(*db_name),
const char UNUSED(*src_name),const char UNUSED(*cfg_args))
{
return nss_ldap_constructor(services_ops,sizeof(services_ops));
}
#endif /* NSS_FLAVOUR_SOLARIS */
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