[thirdparty/systemd.git] / src / shared / nss-util.h

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

#pragma once

/***
  This file is part of systemd.

  Copyright 2014 Lennart Poettering

  systemd 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.

  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <nss.h>
#include <netdb.h>
#include <resolv.h>

#define NSS_GETHOSTBYNAME_PROTOTYPES(module)            \
enum nss_status _nss_##module##_gethostbyname4_r(       \
                const char *name,                       \
                struct gaih_addrtuple **pat,            \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop,             \
                int32_t *ttlp) _public_;                \
enum nss_status _nss_##module##_gethostbyname3_r(       \
                const char *name,                       \
                int af,                                 \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop,             \
                int32_t *ttlp,                          \
                char **canonp) _public_;                \
enum nss_status _nss_##module##_gethostbyname2_r(       \
                const char *name,                       \
                int af,                                 \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop) _public_;   \
enum nss_status _nss_##module##_gethostbyname_r(        \
                const char *name,                       \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop) _public_

#define NSS_GETHOSTBYADDR_PROTOTYPES(module)            \
enum nss_status _nss_##module##_gethostbyaddr2_r(       \
                const void* addr, socklen_t len,        \
                int af,                                 \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop,             \
                int32_t *ttlp) _public_;                \
enum nss_status _nss_##module##_gethostbyaddr_r(        \
                const void* addr, socklen_t len,        \
                int af,                                 \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop) _public_

#define NSS_GETHOSTBYNAME_FALLBACKS(module)             \
enum nss_status _nss_##module##_gethostbyname2_r(       \
                const char *name,                       \
                int af,                                 \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop) {           \
        return _nss_##module##_gethostbyname3_r(        \
                        name,                           \
                        af,                             \
                        host,                           \
                        buffer, buflen,                 \
                        errnop, h_errnop,               \
                        NULL,                           \
                        NULL);                          \
}                                                       \
enum nss_status _nss_##module##_gethostbyname_r(        \
                const char *name,                       \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop) {           \
        enum nss_status ret = NSS_STATUS_NOTFOUND;      \
                                                        \
        if (_res.options & RES_USE_INET6)               \
                ret = _nss_##module##_gethostbyname3_r( \
                        name,                           \
                        AF_INET6,                       \
                        host,                           \
                        buffer, buflen,                 \
                        errnop, h_errnop,               \
                        NULL,                           \
                        NULL);                          \
        if (ret == NSS_STATUS_NOTFOUND)                 \
                ret = _nss_##module##_gethostbyname3_r( \
                        name,                           \
                        AF_INET,                        \
                        host,                           \
                        buffer, buflen,                 \
                        errnop, h_errnop,               \
                        NULL,                           \
                        NULL);                          \
       return ret;                                      \
}

#define NSS_GETHOSTBYADDR_FALLBACKS(module)             \
enum nss_status _nss_##module##_gethostbyaddr_r(        \
                const void* addr, socklen_t len,        \
                int af,                                 \
                struct hostent *host,                   \
                char *buffer, size_t buflen,            \
                int *errnop, int *h_errnop) {           \
        return _nss_##module##_gethostbyaddr2_r(        \
                        addr, len,                      \
                        af,                             \
                        host,                           \
                        buffer, buflen,                 \
                        errnop, h_errnop,               \
                        NULL);                          \
}
Commit	Line	Data
c9fdc26e LP	1	/-- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil --/
	2
	3	#pragma once
	4
	5	/***
	6	This file is part of systemd.
	7
	8	Copyright 2014 Lennart Poettering
	9
	10	systemd is free software; you can redistribute it and/or modify it
	11	under the terms of the GNU Lesser General Public License as published by
	12	the Free Software Foundation; either version 2.1 of the License, or
	13	(at your option) any later version.
	14
	15	systemd is distributed in the hope that it will be useful, but
	16	WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	Lesser General Public License for more details.
	19
	20	You should have received a copy of the GNU Lesser General Public License
	21	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	22	***/
	23
	24	#include <nss.h>
	25	#include <netdb.h>
ea30eb86	26	#include <resolv.h>
c9fdc26e LP	27
	28	#define NSS_GETHOSTBYNAME_PROTOTYPES(module) \
	29	enum nss_status _nss_##module##_gethostbyname4_r( \
	30	const char *name, \
	31	struct gaih_addrtuple **pat, \
	32	char *buffer, size_t buflen, \
	33	int errnop, int h_errnop, \
	34	int32_t *ttlp) _public_; \
	35	enum nss_status _nss_##module##_gethostbyname3_r( \
	36	const char *name, \
	37	int af, \
	38	struct hostent *host, \
	39	char *buffer, size_t buflen, \
	40	int errnop, int h_errnop, \
	41	int32_t *ttlp, \
	42	char **canonp) _public_; \
	43	enum nss_status _nss_##module##_gethostbyname2_r( \
	44	const char *name, \
	45	int af, \
	46	struct hostent *host, \
	47	char *buffer, size_t buflen, \
	48	int errnop, int h_errnop) _public_; \
	49	enum nss_status _nss_##module##_gethostbyname_r( \
	50	const char *name, \
	51	struct hostent *host, \
	52	char *buffer, size_t buflen, \
	53	int errnop, int h_errnop) _public_
	54
	55	#define NSS_GETHOSTBYADDR_PROTOTYPES(module) \
	56	enum nss_status _nss_##module##_gethostbyaddr2_r( \
	57	const void* addr, socklen_t len, \
	58	int af, \
	59	struct hostent *host, \
	60	char *buffer, size_t buflen, \
	61	int errnop, int h_errnop, \
	62	int32_t *ttlp) _public_; \
	63	enum nss_status _nss_##module##_gethostbyaddr_r( \
	64	const void* addr, socklen_t len, \
	65	int af, \
	66	struct hostent *host, \
	67	char *buffer, size_t buflen, \
	68	int errnop, int h_errnop) _public_
	69
	70	#define NSS_GETHOSTBYNAME_FALLBACKS(module) \
	71	enum nss_status _nss_##module##_gethostbyname2_r( \
	72	const char *name, \
	73	int af, \
	74	struct hostent *host, \
	75	char *buffer, size_t buflen, \
	76	int errnop, int h_errnop) { \
	77	return _nss_##module##_gethostbyname3_r( \
	78	name, \
	79	af, \
	80	host, \
	81	buffer, buflen, \
	82	errnop, h_errnop, \
	83	NULL, \
	84	NULL); \
	85	} \
	86	enum nss_status _nss_##module##_gethostbyname_r( \
	87	const char *name, \
	88	struct hostent *host, \
	89	char *buffer, size_t buflen, \
	90	int errnop, int h_errnop) { \
ea30eb86 LP	91	enum nss_status ret = NSS_STATUS_NOTFOUND; \
	92	\
	93	if (_res.options & RES_USE_INET6) \
	94	ret = _nss_##module##_gethostbyname3_r( \
	95	name, \
	96	AF_INET6, \
	97	host, \
	98	buffer, buflen, \
	99	errnop, h_errnop, \
	100	NULL, \
	101	NULL); \
	102	if (ret == NSS_STATUS_NOTFOUND) \
	103	ret = _nss_##module##_gethostbyname3_r( \
c9fdc26e	104	name, \
ea30eb86	105	AF_INET, \
c9fdc26e LP	106	host, \
	107	buffer, buflen, \
	108	errnop, h_errnop, \
	109	NULL, \
	110	NULL); \
ea30eb86	111	return ret; \
c9fdc26e LP	112	}
	113
	114	#define NSS_GETHOSTBYADDR_FALLBACKS(module) \
	115	enum nss_status _nss_##module##_gethostbyaddr_r( \
	116	const void* addr, socklen_t len, \
	117	int af, \
	118	struct hostent *host, \
	119	char *buffer, size_t buflen, \
	120	int errnop, int h_errnop) { \
	121	return _nss_##module##_gethostbyaddr2_r( \
	122	addr, len, \
	123	af, \
	124	host, \
	125	buffer, buflen, \
	126	errnop, h_errnop, \
	127	NULL); \
	128	}