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/*
service.c - NSS lookup functions for services database
Copyright (C) 2006 West Consulting
Copyright (C) 2006-2015 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;
memset(result, 0, sizeof(struct servent));
READ_BUF_STRING(fp, result->s_name);
READ_BUF_STRINGLIST(fp, result->s_aliases);
/* store port number in network byte order */
READ_INT32(fp, tmp2int32);
result->s_port = htons((uint16_t)tmp2int32);
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_NAME(getservbyname_r)(const char *name, const char *protocol,
struct servent *result, char *buffer,
size_t buflen, int *errnop)
{
NSS_GETONE(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_NAME(getservbyport_r)(int port, const char *protocol,
struct servent *result, char *buffer,
size_t buflen, int *errnop)
{
/* port is already in network byte order */
NSS_GETONE(NSLCD_ACTION_SERVICE_BYNUMBER,
tmpint32 = ntohs(port);
WRITE_INT32(fp, tmpint32);
WRITE_STRING(fp, protocol),
read_servent(fp, result, buffer, buflen, errnop));
}
/* thread-local file pointer to an ongoing request */
static TLS TFILE *serventfp;
/* open request to get all services */
nss_status_t NSS_NAME(setservent)(int UNUSED(stayopen))
{
NSS_SETENT(serventfp);
}
/* read a single returned service definition */
nss_status_t NSS_NAME(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_NAME(endservent)(void)
{
NSS_ENDENT(serventfp);
}
#endif /* NSS_FLAVOUR_GLIBC */
#ifdef NSS_FLAVOUR_SOLARIS
#ifdef HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN
static char *servent2str(struct servent *result, char *buffer, size_t buflen)
{
int res, i;
res = snprintf(buffer, buflen, "%s %d/%s", result->s_name, ntohs(result->s_port),
result->s_proto);
if ((res < 0) || (res >= (int)buflen))
return NULL;
if (result->s_aliases)
for (i = 0; result->s_aliases[i]; i++)
{
strlcat(buffer, " ", buflen);
strlcat(buffer, result->s_aliases[i], buflen);
}
if (strlen(buffer) >= buflen - 1)
return NULL;
return buffer;
}
#endif /* HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
static nss_status_t read_result(TFILE *fp, nss_XbyY_args_t *args)
{
READ_RESULT(servent, &args->erange);
}
static nss_status_t services_getservbyname(nss_backend_t UNUSED(*be), void *args)
{
NSS_GETONE(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, args));
}
static nss_status_t services_getservbyport(nss_backend_t UNUSED(*be), void *args)
{
NSS_GETONE(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, args));
}
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, args));
}
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_NAME(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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