[lttng-tools.git] / src / common / sessiond-comm / sessiond-comm.c

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2 only,
 * as published by the Free Software Foundation.
 * 
 * This program 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 General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#define _GNU_SOURCE
#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>

#include <common/common.h>

#include "sessiond-comm.h"

/* For Unix socket */
#include "unix.h"
/* For Inet socket */
#include "inet.h"
/* For Inet6 socket */
#include "inet6.h"

static struct lttcomm_net_family net_families[] = {
	{ LTTCOMM_INET, lttcomm_create_inet_sock },
	{ LTTCOMM_INET6, lttcomm_create_inet6_sock },
};

/*
 * Human readable error message.
 */
static const char *lttcomm_readable_code[] = {
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ENOMEM) ] = "Consumer is out of memory",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_METADATA) ] = "Error with metadata",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_FATAL) ] = "Fatal error",

	/* Last element */
	[ LTTCOMM_ERR_INDEX(LTTCOMM_NR) ] = "Unknown error code"
};

/*
 * Return ptr to string representing a human readable error code from the
 * lttcomm_return_code enum.
 *
 * These code MUST be negative in other to treat that as an error value.
 */
LTTNG_HIDDEN
const char *lttcomm_get_readable_code(enum lttcomm_return_code code)
{
	code = -code;

	if (code < LTTCOMM_CONSUMERD_COMMAND_SOCK_READY || code > LTTCOMM_NR) {
		code = LTTCOMM_NR;
	}

	return lttcomm_readable_code[LTTCOMM_ERR_INDEX(code)];
}

/*
 * Create socket from an already allocated lttcomm socket structure and init
 * sockaddr in the lttcomm sock.
 */
LTTNG_HIDDEN
int lttcomm_create_sock(struct lttcomm_sock *sock)
{
	int ret, _sock_type, _sock_proto, domain;

	assert(sock);

	domain = sock->sockaddr.type;
	if (domain != LTTCOMM_INET && domain != LTTCOMM_INET6) {
		ERR("Create socket of unknown domain %d", domain);
		ret = -1;
		goto error;
	}

	switch (sock->proto) {
	case LTTCOMM_SOCK_UDP:
		_sock_type = SOCK_DGRAM;
		_sock_proto = IPPROTO_UDP;
		break;
	case LTTCOMM_SOCK_TCP:
		_sock_type = SOCK_STREAM;
		_sock_proto = IPPROTO_TCP;
		break;
	default:
		ret = -1;
		goto error;
	}

	ret = net_families[domain].create(sock, _sock_type, _sock_proto);
	if (ret < 0) {
		goto error;
	}

error:
	return ret;
}

/*
 * Return allocated lttcomm socket structure.
 */
LTTNG_HIDDEN
struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto)
{
	struct lttcomm_sock *sock;

	sock = zmalloc(sizeof(struct lttcomm_sock));
	if (sock == NULL) {
		PERROR("zmalloc create sock");
		goto end;
	}

	sock->proto = proto;
	sock->fd = -1;

end:
	return sock;
}

/*
 * Return an allocated lttcomm socket structure and copy src content into
 * the newly created socket.
 *
 * This is mostly useful when lttcomm_sock are passed between process where the
 * fd and ops have to be changed within the correct address space.
 */
LTTNG_HIDDEN
struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src)
{
	struct lttcomm_sock *sock;

	/* Safety net */
	assert(src);

	sock = lttcomm_alloc_sock(src->proto);
	if (sock == NULL) {
		goto alloc_error;
	}

	lttcomm_copy_sock(sock, src);

alloc_error:
	return sock;
}

/*
 * Create and copy socket from an allocated lttcomm socket structure.
 *
 * This is mostly useful when lttcomm_sock are passed between process where the
 * fd and ops have to be changed within the correct address space.
 */
LTTNG_HIDDEN
void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src)
{
	/* Safety net */
	assert(dst);
	assert(src);

	dst->proto = src->proto;
	dst->fd = src->fd;
	dst->ops = src->ops;
	/* Copy sockaddr information from original socket */
	memcpy(&dst->sockaddr, &src->sockaddr, sizeof(dst->sockaddr));
}

/*
 * Init IPv4 sockaddr structure.
 */
LTTNG_HIDDEN
int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
		const char *ip, unsigned int port)
{
	int ret;

	assert(sockaddr);
	assert(ip);
	assert(port > 0 && port <= 65535);

	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));

	sockaddr->type = LTTCOMM_INET;
	sockaddr->addr.sin.sin_family = AF_INET;
	sockaddr->addr.sin.sin_port = htons(port);
	ret = inet_pton(sockaddr->addr.sin.sin_family, ip,
			&sockaddr->addr.sin.sin_addr);
	if (ret < 1) {
		ret = -1;
		ERR("%s with port %d: unrecognized IPv4 address", ip, port);
		goto error;
	}
	memset(sockaddr->addr.sin.sin_zero, 0, sizeof(sockaddr->addr.sin.sin_zero));

error:
	return ret;
}

/*
 * Init IPv6 sockaddr structure.
 */
LTTNG_HIDDEN
int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
		const char *ip, unsigned int port)
{
	int ret;

	assert(sockaddr);
	assert(ip);
	assert(port > 0 && port <= 65535);

	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));

	sockaddr->type = LTTCOMM_INET6;
	sockaddr->addr.sin6.sin6_family = AF_INET6;
	sockaddr->addr.sin6.sin6_port = htons(port);
	ret = inet_pton(sockaddr->addr.sin6.sin6_family, ip,
			&sockaddr->addr.sin6.sin6_addr);
	if (ret < 1) {
		ret = -1;
		goto error;
	}

error:
	return ret;
}

/*
 * Return allocated lttcomm socket structure from lttng URI.
 */
LTTNG_HIDDEN
struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri)
{
	int ret;
	int _sock_proto;
	struct lttcomm_sock *sock = NULL;

	/* Safety net */
	assert(uri);

	/* Check URI protocol */
	if (uri->proto == LTTNG_TCP) {
		_sock_proto = LTTCOMM_SOCK_TCP;
	} else {
		ERR("Relayd invalid URI proto: %d", uri->proto);
		goto alloc_error;
	}

	sock = lttcomm_alloc_sock(_sock_proto);
	if (sock == NULL) {
		goto alloc_error;
	}

	/* Check destination type */
	if (uri->dtype == LTTNG_DST_IPV4) {
		ret = lttcomm_init_inet_sockaddr(&sock->sockaddr, uri->dst.ipv4,
				uri->port);
		if (ret < 0) {
			goto error;
		}
	} else if (uri->dtype == LTTNG_DST_IPV6) {
		ret = lttcomm_init_inet6_sockaddr(&sock->sockaddr, uri->dst.ipv6,
				uri->port);
		if (ret < 0) {
			goto error;
		}
	} else {
		/* Command URI is invalid */
		ERR("Relayd invalid URI dst type: %d", uri->dtype);
		goto error;
	}

	return sock;

error:
	lttcomm_destroy_sock(sock);
alloc_error:
	return NULL;
}

/*
 * Destroy and free lttcomm socket.
 */
LTTNG_HIDDEN
void lttcomm_destroy_sock(struct lttcomm_sock *sock)
{
	free(sock);
}

/*
 * Allocate and return a relayd socket object using a given URI to initialize
 * it and the major/minor version of the supported protocol.
 *
 * On error, NULL is returned.
 */
LTTNG_HIDDEN
struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock(struct lttng_uri *uri,
		uint32_t major, uint32_t minor)
{
	int ret;
	struct lttcomm_sock *tmp_sock = NULL;
	struct lttcomm_relayd_sock *rsock = NULL;

	assert(uri);

	rsock = zmalloc(sizeof(*rsock));
	if (!rsock) {
		PERROR("zmalloc relayd sock");
		goto error;
	}

	/* Allocate socket object from URI */
	tmp_sock = lttcomm_alloc_sock_from_uri(uri);
	if (tmp_sock == NULL) {
		goto error_free;
	}

	/*
	 * Create socket object which basically sets the ops according to the
	 * socket protocol.
	 */
	lttcomm_copy_sock(&rsock->sock, tmp_sock);
	/* Temporary socket pointer not needed anymore. */
	lttcomm_destroy_sock(tmp_sock);
	ret = lttcomm_create_sock(&rsock->sock);
	if (ret < 0) {
		goto error_free;
	}

	rsock->major = major;
	rsock->minor = minor;

	return rsock;

error_free:
	free(rsock);
error:
	return NULL;
}
Commit	Line	Data
826d496d	1	/*
917216f6 DG	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
917216f6 DG	3	* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
fac6795d	4	*
d14d33bf AM	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License, version 2 only,
	7	* as published by the Free Software Foundation.
fac6795d	8	*
917216f6 DG	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
fac6795d	13	*
d14d33bf AM	14	* You should have received a copy of the GNU General Public License along
	15	* with this program; if not, write to the Free Software Foundation, Inc.,
	16	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
fac6795d DG	17	*/
	18
	19	#define _GNU_SOURCE
1e307fab	20	#include <assert.h>
fac6795d DG	21	#include <limits.h>
	22	#include <stdio.h>
	23	#include <stdlib.h>
	24	#include <string.h>
fac6795d DG	25	#include <sys/stat.h>
fac6795d DG	26	#include <sys/types.h>
fac6795d	27	#include <unistd.h>
3bd1e081	28	#include <errno.h>
fac6795d	29
90e535ef	30	#include <common/common.h>
990570ed	31
10a8a223	32	#include "sessiond-comm.h"
fac6795d	33
6364a07a DG	34	/* For Unix socket */
	35	#include "unix.h"
	36	/* For Inet socket */
	37	#include "inet.h"
	38	/* For Inet6 socket */
	39	#include "inet6.h"
	40
32dd26fb	41	static struct lttcomm_net_family net_families[] = {
6364a07a DG	42	{ LTTCOMM_INET, lttcomm_create_inet_sock },
	43	{ LTTCOMM_INET6, lttcomm_create_inet6_sock },
	44	};
	45
fac6795d DG	46	/*
	47	* Human readable error message.
	48	*/
	49	static const char *lttcomm_readable_code[] = {
f73fabfd DG	50	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready",
	51	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds",
	52	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds",
	53	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command",
	54	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread",
	55	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd",
	56	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up",
	57	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally",
	58	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error",
	59	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile",
	60	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF",
	61	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL",
	62	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM",
	63	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE",
40727660 MD	64	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ENOMEM) ] = "Consumer is out of memory",
	65	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_METADATA) ] = "Error with metadata",
	66	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_FATAL) ] = "Fatal error",
80e327fa	67
f73fabfd DG	68	/* Last element */
f73fabfd DG	69	[ LTTCOMM_ERR_INDEX(LTTCOMM_NR) ] = "Unknown error code"
fac6795d DG	70	};
	71
	72	/*
917216f6 DG	73	* Return ptr to string representing a human readable error code from the
917216f6 DG	74	* lttcomm_return_code enum.
fac6795d	75	*
917216f6	76	* These code MUST be negative in other to treat that as an error value.
fac6795d	77	*/
90e535ef	78	LTTNG_HIDDEN
fac6795d DG	79	const char *lttcomm_get_readable_code(enum lttcomm_return_code code)
fac6795d DG	80	{
f73fabfd	81	code = -code;
fac6795d	82
c617c0c6	83	if (code < LTTCOMM_CONSUMERD_COMMAND_SOCK_READY \|\| code > LTTCOMM_NR) {
f73fabfd	84	code = LTTCOMM_NR;
fac6795d DG	85	}
fac6795d DG	86
f73fabfd	87	return lttcomm_readable_code[LTTCOMM_ERR_INDEX(code)];
fac6795d	88	}
6364a07a DG	89
6364a07a DG	90	/*
de5e9086 DG	91	* Create socket from an already allocated lttcomm socket structure and init
de5e9086 DG	92	* sockaddr in the lttcomm sock.
6364a07a	93	*/
90e535ef	94	LTTNG_HIDDEN
de5e9086	95	int lttcomm_create_sock(struct lttcomm_sock *sock)
6364a07a	96	{
de5e9086	97	int ret, _sock_type, _sock_proto, domain;
6364a07a	98
de5e9086 DG	99	assert(sock);
	100
	101	domain = sock->sockaddr.type;
	102	if (domain != LTTCOMM_INET && domain != LTTCOMM_INET6) {
	103	ERR("Create socket of unknown domain %d", domain);
	104	ret = -1;
	105	goto error;
6364a07a DG	106	}
6364a07a DG	107
de5e9086 DG	108	switch (sock->proto) {
	109	case LTTCOMM_SOCK_UDP:
	110	_sock_type = SOCK_DGRAM;
	111	_sock_proto = IPPROTO_UDP;
	112	break;
	113	case LTTCOMM_SOCK_TCP:
	114	_sock_type = SOCK_STREAM;
	115	_sock_proto = IPPROTO_TCP;
	116	break;
	117	default:
	118	ret = -1;
	119	goto error;
	120	}
6364a07a	121
de5e9086 DG	122	ret = net_families[domain].create(sock, _sock_type, _sock_proto);
	123	if (ret < 0) {
	124	goto error;
	125	}
	126
	127	error:
	128	return ret;
6364a07a DG	129	}
	130
	131	/*
de5e9086	132	* Return allocated lttcomm socket structure.
6364a07a	133	*/
90e535ef	134	LTTNG_HIDDEN
de5e9086	135	struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto)
6364a07a	136	{
de5e9086	137	struct lttcomm_sock *sock;
6364a07a	138
de5e9086 DG	139	sock = zmalloc(sizeof(struct lttcomm_sock));
	140	if (sock == NULL) {
	141	PERROR("zmalloc create sock");
	142	goto end;
6364a07a DG	143	}
	144
	145	sock->proto = proto;
de5e9086	146	sock->fd = -1;
6364a07a	147
de5e9086 DG	148	end:
de5e9086 DG	149	return sock;
6364a07a DG	150	}
	151
	152	/*
de5e9086 DG	153	* Return an allocated lttcomm socket structure and copy src content into
	154	* the newly created socket.
	155	*
	156	* This is mostly useful when lttcomm_sock are passed between process where the
	157	* fd and ops have to be changed within the correct address space.
6364a07a	158	*/
90e535ef	159	LTTNG_HIDDEN
de5e9086	160	struct lttcomm_sock lttcomm_alloc_copy_sock(struct lttcomm_sock src)
6364a07a	161	{
6364a07a DG	162	struct lttcomm_sock *sock;
6364a07a DG	163
de5e9086 DG	164	/* Safety net */
	165	assert(src);
	166
	167	sock = lttcomm_alloc_sock(src->proto);
6364a07a DG	168	if (sock == NULL) {
	169	goto alloc_error;
	170	}
	171
de5e9086	172	lttcomm_copy_sock(sock, src);
6364a07a	173
de5e9086	174	alloc_error:
6364a07a	175	return sock;
de5e9086	176	}
6364a07a	177
de5e9086 DG	178	/*
	179	* Create and copy socket from an allocated lttcomm socket structure.
	180	*
	181	* This is mostly useful when lttcomm_sock are passed between process where the
	182	* fd and ops have to be changed within the correct address space.
	183	*/
90e535ef	184	LTTNG_HIDDEN
de5e9086 DG	185	void lttcomm_copy_sock(struct lttcomm_sock dst, struct lttcomm_sock src)
	186	{
	187	/* Safety net */
	188	assert(dst);
	189	assert(src);
	190
	191	dst->proto = src->proto;
	192	dst->fd = src->fd;
	193	dst->ops = src->ops;
	194	/* Copy sockaddr information from original socket */
	195	memcpy(&dst->sockaddr, &src->sockaddr, sizeof(dst->sockaddr));
6364a07a DG	196	}
	197
	198	/*
	199	* Init IPv4 sockaddr structure.
	200	*/
90e535ef	201	LTTNG_HIDDEN
6364a07a DG	202	int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
	203	const char *ip, unsigned int port)
	204	{
	205	int ret;
	206
	207	assert(sockaddr);
	208	assert(ip);
	209	assert(port > 0 && port <= 65535);
	210
	211	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));
	212
	213	sockaddr->type = LTTCOMM_INET;
	214	sockaddr->addr.sin.sin_family = AF_INET;
	215	sockaddr->addr.sin.sin_port = htons(port);
	216	ret = inet_pton(sockaddr->addr.sin.sin_family, ip,
	217	&sockaddr->addr.sin.sin_addr);
	218	if (ret < 1) {
	219	ret = -1;
de5e9086	220	ERR("%s with port %d: unrecognized IPv4 address", ip, port);
6364a07a DG	221	goto error;
	222	}
	223	memset(sockaddr->addr.sin.sin_zero, 0, sizeof(sockaddr->addr.sin.sin_zero));
	224
	225	error:
	226	return ret;
	227	}
	228
	229	/*
	230	* Init IPv6 sockaddr structure.
	231	*/
90e535ef	232	LTTNG_HIDDEN
6364a07a DG	233	int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
	234	const char *ip, unsigned int port)
	235	{
	236	int ret;
	237
	238	assert(sockaddr);
	239	assert(ip);
	240	assert(port > 0 && port <= 65535);
	241
	242	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));
	243
	244	sockaddr->type = LTTCOMM_INET6;
	245	sockaddr->addr.sin6.sin6_family = AF_INET6;
	246	sockaddr->addr.sin6.sin6_port = htons(port);
	247	ret = inet_pton(sockaddr->addr.sin6.sin6_family, ip,
	248	&sockaddr->addr.sin6.sin6_addr);
	249	if (ret < 1) {
	250	ret = -1;
	251	goto error;
	252	}
	253
	254	error:
	255	return ret;
	256	}
de5e9086 DG	257
	258	/*
	259	* Return allocated lttcomm socket structure from lttng URI.
	260	*/
90e535ef	261	LTTNG_HIDDEN
de5e9086 DG	262	struct lttcomm_sock lttcomm_alloc_sock_from_uri(struct lttng_uri uri)
	263	{
	264	int ret;
	265	int _sock_proto;
	266	struct lttcomm_sock *sock = NULL;
	267
	268	/* Safety net */
	269	assert(uri);
	270
	271	/* Check URI protocol */
	272	if (uri->proto == LTTNG_TCP) {
	273	_sock_proto = LTTCOMM_SOCK_TCP;
	274	} else {
	275	ERR("Relayd invalid URI proto: %d", uri->proto);
	276	goto alloc_error;
	277	}
	278
	279	sock = lttcomm_alloc_sock(_sock_proto);
	280	if (sock == NULL) {
	281	goto alloc_error;
	282	}
	283
	284	/* Check destination type */
	285	if (uri->dtype == LTTNG_DST_IPV4) {
	286	ret = lttcomm_init_inet_sockaddr(&sock->sockaddr, uri->dst.ipv4,
	287	uri->port);
	288	if (ret < 0) {
	289	goto error;
	290	}
	291	} else if (uri->dtype == LTTNG_DST_IPV6) {
	292	ret = lttcomm_init_inet6_sockaddr(&sock->sockaddr, uri->dst.ipv6,
	293	uri->port);
	294	if (ret < 0) {
	295	goto error;
	296	}
	297	} else {
	298	/* Command URI is invalid */
	299	ERR("Relayd invalid URI dst type: %d", uri->dtype);
	300	goto error;
	301	}
	302
	303	return sock;
	304
	305	error:
	306	lttcomm_destroy_sock(sock);
	307	alloc_error:
	308	return NULL;
	309	}
	310
	311	/*
	312	* Destroy and free lttcomm socket.
	313	*/
90e535ef	314	LTTNG_HIDDEN
de5e9086 DG	315	void lttcomm_destroy_sock(struct lttcomm_sock *sock)
de5e9086 DG	316	{
0e428499	317	free(sock);
de5e9086	318	}
6151a90f JD	319
	320	/*
	321	* Allocate and return a relayd socket object using a given URI to initialize
	322	* it and the major/minor version of the supported protocol.
	323	*
	324	* On error, NULL is returned.
	325	*/
bc182241	326	LTTNG_HIDDEN
6151a90f JD	327	struct lttcomm_relayd_sock lttcomm_alloc_relayd_sock(struct lttng_uri uri,
	328	uint32_t major, uint32_t minor)
	329	{
	330	int ret;
	331	struct lttcomm_sock *tmp_sock = NULL;
	332	struct lttcomm_relayd_sock *rsock = NULL;
	333
	334	assert(uri);
	335
	336	rsock = zmalloc(sizeof(*rsock));
	337	if (!rsock) {
	338	PERROR("zmalloc relayd sock");
	339	goto error;
	340	}
	341
	342	/* Allocate socket object from URI */
	343	tmp_sock = lttcomm_alloc_sock_from_uri(uri);
	344	if (tmp_sock == NULL) {
	345	goto error_free;
	346	}
	347
	348	/*
	349	* Create socket object which basically sets the ops according to the
	350	* socket protocol.
	351	*/
	352	lttcomm_copy_sock(&rsock->sock, tmp_sock);
	353	/* Temporary socket pointer not needed anymore. */
	354	lttcomm_destroy_sock(tmp_sock);
	355	ret = lttcomm_create_sock(&rsock->sock);
	356	if (ret < 0) {
	357	goto error_free;
	358	}
	359
	360	rsock->major = major;
	361	rsock->minor = minor;
	362
	363	return rsock;
	364
	365	error_free:
	366	free(rsock);
	367	error:
	368	return NULL;
	369	}