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/*
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service.c - NSS lookup functions for services database
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Copyright (C) 2006 West Consulting
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Copyright (C) 2006-2015 Arthur de Jong
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Copyright (C) 2010 Symas Corporation
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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#include "config.h"
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#include <string.h>
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#include <errno.h>
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#include "prototypes.h"
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#include "common.h"
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#include "compat/attrs.h"
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/* read a single services result entry from the stream */
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static nss_status_t read_servent(TFILE *fp, struct servent *result,
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char *buffer, size_t buflen, int *errnop)
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{
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int32_t tmpint32, tmp2int32, tmp3int32;
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size_t bufptr = 0;
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memset(result, 0, sizeof(struct servent));
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READ_BUF_STRING(fp, result->s_name);
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READ_BUF_STRINGLIST(fp, result->s_aliases);
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/* store port number in network byte order */
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READ_INT32(fp, tmp2int32);
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result->s_port = htons((uint16_t)tmp2int32);
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READ_BUF_STRING(fp, result->s_proto);
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/* we're done */
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return NSS_STATUS_SUCCESS;
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}
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#ifdef NSS_FLAVOUR_GLIBC
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/* get a service entry by name and protocol */
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nss_status_t NSS_NAME(getservbyname_r)(const char *name, const char *protocol,
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struct servent *result, char *buffer,
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size_t buflen, int *errnop)
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{
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NSS_GETONE(NSLCD_ACTION_SERVICE_BYNAME,
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WRITE_STRING(fp, name);
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WRITE_STRING(fp, protocol),
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read_servent(fp, result, buffer, buflen, errnop));
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}
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/* get a service entry by port and protocol */
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nss_status_t NSS_NAME(getservbyport_r)(int port, const char *protocol,
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struct servent *result, char *buffer,
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size_t buflen, int *errnop)
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{
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/* port is already in network byte order */
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NSS_GETONE(NSLCD_ACTION_SERVICE_BYNUMBER,
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tmpint32 = ntohs(port);
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WRITE_INT32(fp, tmpint32);
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WRITE_STRING(fp, protocol),
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read_servent(fp, result, buffer, buflen, errnop));
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}
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/* thread-local file pointer to an ongoing request */
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static TLS TFILE *serventfp;
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/* open request to get all services */
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nss_status_t NSS_NAME(setservent)(int UNUSED(stayopen))
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{
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NSS_SETENT(serventfp);
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}
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/* read a single returned service definition */
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nss_status_t NSS_NAME(getservent_r)(struct servent *result,
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char *buffer, size_t buflen, int *errnop)
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{
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NSS_GETENT(serventfp, NSLCD_ACTION_SERVICE_ALL,
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read_servent(serventfp, result, buffer, buflen, errnop));
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}
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/* close the stream opened by setservent() above */
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nss_status_t NSS_NAME(endservent)(void)
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{
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NSS_ENDENT(serventfp);
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}
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#endif /* NSS_FLAVOUR_GLIBC */
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#ifdef NSS_FLAVOUR_SOLARIS
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#ifdef HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN
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static char *servent2str(struct servent *result, char *buffer, size_t buflen)
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{
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int res, i;
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res = snprintf(buffer, buflen, "%s %d/%s", result->s_name, ntohs(result->s_port),
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result->s_proto);
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if ((res < 0) || (res >= (int)buflen))
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return NULL;
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if (result->s_aliases)
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for (i = 0; result->s_aliases[i]; i++)
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{
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strlcat(buffer, " ", buflen);
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strlcat(buffer, result->s_aliases[i], buflen);
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}
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if (strlen(buffer) >= buflen - 1)
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return NULL;
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return buffer;
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}
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#endif /* HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
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static nss_status_t read_result(TFILE *fp, nss_XbyY_args_t *args)
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{
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READ_RESULT(servent, &args->erange);
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}
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static nss_status_t services_getservbyname(nss_backend_t UNUSED(*be), void *args)
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{
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NSS_GETONE(NSLCD_ACTION_SERVICE_BYNAME,
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WRITE_STRING(fp, NSS_ARGS(args)->key.serv.serv.name);
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WRITE_STRING(fp, NSS_ARGS(args)->key.serv.proto),
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read_result(fp, args));
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}
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static nss_status_t services_getservbyport(nss_backend_t UNUSED(*be), void *args)
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{
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NSS_GETONE(NSLCD_ACTION_SERVICE_BYNUMBER,
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WRITE_INT32(fp, ntohs(NSS_ARGS(args)->key.serv.serv.port));
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WRITE_STRING(fp, NSS_ARGS(args)->key.serv.proto),
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read_result(fp, args));
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}
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static nss_status_t services_setservent(nss_backend_t *be, void UNUSED(*args))
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{
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NSS_SETENT(LDAP_BE(be)->fp);
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}
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static nss_status_t services_getservent(nss_backend_t *be, void *args)
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{
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NSS_GETENT(LDAP_BE(be)->fp, NSLCD_ACTION_SERVICE_ALL,
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read_result(LDAP_BE(be)->fp, args));
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}
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static nss_status_t services_endservent(nss_backend_t *be, void UNUSED(*args))
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{
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NSS_ENDENT(LDAP_BE(be)->fp);
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}
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static nss_backend_op_t services_ops[] = {
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nss_ldap_destructor,
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services_endservent,
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services_setservent,
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services_getservent,
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services_getservbyname,
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services_getservbyport
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};
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nss_backend_t *NSS_NAME(services_constr)(const char UNUSED(*db_name),
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const char UNUSED(*src_name),
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const char UNUSED(*cfg_args))
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{
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return nss_ldap_constructor(services_ops, sizeof(services_ops));
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}
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#endif /* NSS_FLAVOUR_SOLARIS */
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