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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,buffer,buflen,
WRITE_STRING(fp,name);WRITE_STRING(fp,protocol),
read_servent(fp,result,buffer,buflen,errnop));
return retv;
}
/* 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,buffer,buflen,
WRITE_INT32(fp,ntohs(port));WRITE_STRING(fp,protocol),
read_servent(fp,result,buffer,buflen,errnop));
return retv;
}
/* 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,buffer,buflen,
read_servent(serventfp,result,buffer,buflen,errnop));
return retv;
}
/* 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
static nss_status_t _nss_nslcd_getservbyname_r(
const char *name,const char *protocol,struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYGEN(NSLCD_ACTION_SERVICE_BYNAME,buffer,buflen,
WRITE_STRING(fp,name);WRITE_STRING(fp,protocol),
read_servent(fp,result,buffer,buflen,errnop));
return retv;
}
static nss_status_t _nss_nslcd_getservbyport_r(
int port,const char *protocol,struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYGEN(NSLCD_ACTION_SERVICE_BYNUMBER,buffer,buflen,
WRITE_INT32(fp,ntohs(port));WRITE_STRING(fp,protocol),
read_servent(fp,result,buffer,buflen,errnop));
return retv;
}
/* thread-local file pointer to an ongoing request */
static __thread TFILE *serventfp;
static nss_status_t _xnss_ldap_setservent(nss_backend_t UNUSED(*be),void UNUSED(*args))
{
NSS_SETENT(serventfp);
}
static nss_status_t _nss_nslcd_getservent_r(
struct servent *result,char *buffer,size_t buflen,int *errnop)
{
NSS_GETENT(serventfp,NSLCD_ACTION_SERVICE_ALL,buffer,buflen,
read_servent(serventfp,result,buffer,buflen,errnop));
return retv;
}
static nss_status_t _xnss_ldap_endservent(nss_backend_t UNUSED(*be),void UNUSED(*args))
{
NSS_ENDENT(serventfp);
}
static nss_status_t _xnss_ldap_getservbyname_r(nss_backend_t UNUSED(*be),void *args)
{
struct servent priv_service;
struct servent *service=NSS_ARGS(args)->buf.result?(struct servent *)NSS_ARGS(args)->buf.result:&priv_service;
char *buffer=NSS_ARGS(args)->buf.buffer;
size_t buflen=NSS_ARGS(args)->buf.buflen;
char *data_ptr;
nss_status_t status;
status=_nss_nslcd_getservbyname_r(NSS_ARGS(args)->key.serv.serv.name,NSS_ARGS(args)->key.serv.proto,service,
buffer,buflen,&errno);
if (status!=NSS_STATUS_SUCCESS)
return status;
if (!NSS_ARGS(args)->buf.result)
{
/* result==NULL, return file format */
data_ptr=(char *)malloc(buflen);
sprintf(data_ptr,"%s %d/%s",service->s_name,service->s_port,
service->s_proto);
if (service->s_aliases)
{
int i;
for (i=0; service->s_aliases[i]; i++)
{
strcat(data_ptr," ");
strcat(data_ptr,service->s_aliases[i]);
}
}
strcpy(buffer,data_ptr);
free(data_ptr);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
}
else
{
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
}
return status;
}
static nss_status_t _xnss_ldap_getservbyport_r(nss_backend_t UNUSED(*be),void *args)
{
int port=NSS_ARGS(args)->key.serv.serv.port;
struct servent priv_service;
struct servent *service=NSS_ARGS(args)->buf.result?(struct servent *)NSS_ARGS(args)->buf.result:&priv_service;
char *buffer=NSS_ARGS(args)->buf.buffer;
size_t buflen=NSS_ARGS(args)->buf.buflen;
char *data_ptr;
nss_status_t status;
status=_nss_nslcd_getservbyport_r(port,NSS_ARGS(args)->key.serv.proto,service,buffer,buflen,&errno);
if (status!=NSS_STATUS_SUCCESS)
return status;
if (!NSS_ARGS(args)->buf.result)
{
/* result==NULL, return file format */
data_ptr=(char *)malloc(buflen);
sprintf(data_ptr,"%s %d/%s",service->s_name,port,
service->s_proto);
if (service->s_aliases)
{
int i;
for (i=0; service->s_aliases[i]; i++)
{
strcat(data_ptr," ");
strcat(data_ptr,service->s_aliases[i]);
}
}
strcpy(buffer,data_ptr);
free(data_ptr);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
}
else
{
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
}
return status;
}
static nss_status_t _xnss_ldap_getservent_r(nss_backend_t UNUSED(*be),void *args)
{
struct servent priv_service;
struct servent *service=NSS_ARGS(args)->buf.result?(struct servent *)NSS_ARGS(args)->buf.result:&priv_service;
char *buffer=NSS_ARGS(args)->buf.buffer;
size_t buflen=NSS_ARGS(args)->buf.buflen;
char *data_ptr;
nss_status_t status;
status=_nss_nslcd_getservent_r(service,buffer,buflen,&errno);
if (status!=NSS_STATUS_SUCCESS)
return status;
if (!NSS_ARGS(args)->buf.result)
{
/* result==NULL, return file format */
data_ptr=(char *)malloc(buflen);
sprintf(data_ptr,"%s %d/%s",service->s_name,service->s_port,
service->s_proto);
if (service->s_aliases)
{
int i;
for (i=0; service->s_aliases[i]; i++)
{
strcat(data_ptr," ");
strcat(data_ptr,service->s_aliases[i]);
}
}
strcpy(buffer,data_ptr);
free(data_ptr);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
}
else
{
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
}
return status;
}
static nss_status_t _xnss_ldap_services_destr(nss_backend_t *be,void UNUSED(*args))
{
free(be);
return NSS_STATUS_SUCCESS;
}
static nss_backend_op_t services_ops[]={
_xnss_ldap_services_destr,
_xnss_ldap_endservent,
_xnss_ldap_setservent,
_xnss_ldap_getservent_r,
_xnss_ldap_getservbyname_r,
_xnss_ldap_getservbyport_r
};
nss_backend_t *_nss_ldap_services_constr(const char UNUSED(*db_name),
const char UNUSED(*src_name),const char UNUSED(*cfg_args))
{
nss_backend_t *be;
if (!(be=(nss_backend_t *)malloc(sizeof(*be))))
return NULL;
be->ops=services_ops;
be->n_ops=sizeof(services_ops)/sizeof(nss_backend_op_t);
return (nss_backend_t *)be;
}
#endif /* NSS_FLAVOUR_SOLARIS */
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