[lttng-tools.git] / src / bin / lttng-relayd / cmd-2-11.c

/*
 * Copyright (C) 2018 - Jonathan Rajotte <jonathan.rajotte-julien@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 _LGPL_SOURCE
#include <assert.h>
#include <inttypes.h>

#include <common/common.h>
#include <common/sessiond-comm/relayd.h>

#include <common/compat/endian.h>
#include <common/compat/string.h>
#include <lttng/constant.h>

#include "cmd-2-11.h"
#include "utils.h"

int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
		char *session_name, char *hostname,
		uint32_t *live_timer, bool *snapshot,
		uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
		uint64_t *current_chunk_id)
{
	int ret;
	struct lttcomm_relayd_create_session_2_11 header;
	size_t header_len, received_names_size;
	struct lttng_buffer_view session_name_view;
	struct lttng_buffer_view hostname_view;

	header_len = sizeof(header);

	if (payload->size < header_len) {
		ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
				header_len, payload->size);
		ret = -1;
		goto error;
	}
	memcpy(&header, payload->data, header_len);

	header.session_name_len = be32toh(header.session_name_len);
	header.hostname_len = be32toh(header.hostname_len);
	header.live_timer = be32toh(header.live_timer);

	lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);

	received_names_size = header.session_name_len + header.hostname_len;
	if (payload->size < header_len + received_names_size) {
		ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
				header_len + received_names_size, payload->size);
		ret = -1;
		goto error;
	}

	/* Validate length against defined constant. */
	if (header.session_name_len > LTTNG_NAME_MAX) {
		ret = -ENAMETOOLONG;
		ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
		goto error;
	}
	if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
		ret = -ENAMETOOLONG;
		ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX);
		goto error;
	}

	session_name_view = lttng_buffer_view_from_view(payload, header_len,
			header.session_name_len);
	hostname_view = lttng_buffer_view_from_view(payload,
			header_len + header.session_name_len, header.hostname_len);

	/* Validate that names are NULL terminated. */
	if (session_name_view.data[session_name_view.size - 1] != '\0') {
		ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
		ret = -1;
		goto error;
	}

	if (hostname_view.data[hostname_view.size - 1] != '\0') {
		ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
		ret = -1;
		goto error;
	}

	/*
	 * Length and null-termination check are already performed.
	 * LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected.
	 */
	strcpy(session_name, session_name_view.data);
	strcpy(hostname, hostname_view.data);

	*live_timer = header.live_timer;
	*snapshot = !!header.snapshot;

	ret = 0;

error:
	return ret;
}

/*
 * cmd_recv_stream_2_11 allocates path_name and channel_name.
 */
int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
		char **ret_path_name, char **ret_channel_name,
		uint64_t *tracefile_size, uint64_t *tracefile_count,
		uint64_t *trace_archive_id)
{
	int ret;
	struct lttcomm_relayd_add_stream_2_11 header;
	size_t header_len, received_names_size;
	struct lttng_buffer_view channel_name_view;
	struct lttng_buffer_view pathname_view;
	char *path_name = NULL;
	char *channel_name = NULL;

	header_len = sizeof(header);

	if (payload->size < header_len) {
		ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
				header_len, payload->size);
		ret = -1;
		goto error;
	}
	memcpy(&header, payload->data, header_len);

	header.channel_name_len = be32toh(header.channel_name_len);
	header.pathname_len = be32toh(header.pathname_len);
	header.tracefile_size = be64toh(header.tracefile_size);
	header.tracefile_count = be64toh(header.tracefile_count);
	header.trace_archive_id = be64toh(header.trace_archive_id);

	received_names_size = header.channel_name_len + header.pathname_len;
	if (payload->size < header_len + received_names_size) {
		ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
				header_len + received_names_size, payload->size);
		ret = -1;
		goto error;
	}

	/* Validate length against defined constant. */
	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
		ret = -ENAMETOOLONG;
		ERR("Channel name too long");
		goto error;
	}
	if (header.pathname_len > LTTNG_NAME_MAX) {
		ret = -ENAMETOOLONG;
		ERR("Pathname too long");
		goto error;
	}

	/* Validate that names are (NULL terminated. */
	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
			    header.channel_name_len);
	pathname_view = lttng_buffer_view_from_view(payload,
			header_len + header.channel_name_len, header.pathname_len);

	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
		ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
		ret = -1;
		goto error;
	}

	if (pathname_view.data[pathname_view.size - 1] != '\0') {
		ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
		ret = -1;
		goto error;
	}

	channel_name = strdup(channel_name_view.data);
	if (!channel_name) {
		ret = -errno;
		PERROR("Channel name allocation");
		goto error;
	}

	path_name = create_output_path(pathname_view.data);
	if (!path_name) {
		PERROR("Path name allocation");
		ret = -ENOMEM;
		goto error;
	}

	*tracefile_size = header.tracefile_size;
	*tracefile_count = header.tracefile_count;
	*trace_archive_id = header.trace_archive_id;
	*ret_path_name = path_name;
	*ret_channel_name = channel_name;
	/* Move ownership to caller */
	path_name = NULL;
	channel_name = NULL;
	ret = 0;
error:
	free(channel_name);
	free(path_name);
	return ret;
}
Commit	Line	Data
f86f6389 JR	1	/*
	2	* Copyright (C) 2018 - Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License, version 2 only, as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program; if not, write to the Free Software Foundation, Inc., 51
	15	* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	16	*/
	17
	18	#define _LGPL_SOURCE
	19	#include <assert.h>
	20	#include <inttypes.h>
	21
	22	#include <common/common.h>
	23	#include <common/sessiond-comm/relayd.h>
	24
	25	#include <common/compat/endian.h>
	26	#include <common/compat/string.h>
	27	#include <lttng/constant.h>
	28
	29	#include "cmd-2-11.h"
2f21a469	30	#include "utils.h"
f86f6389 JR	31
	32	int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
	33	char session_name, char hostname,
23c8ff50	34	uint32_t live_timer, bool snapshot,
1e791a74 JG	35	uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
1e791a74 JG	36	uint64_t *current_chunk_id)
f86f6389 JR	37	{
	38	int ret;
	39	struct lttcomm_relayd_create_session_2_11 header;
	40	size_t header_len, received_names_size;
	41	struct lttng_buffer_view session_name_view;
	42	struct lttng_buffer_view hostname_view;
	43
	44	header_len = sizeof(header);
	45
	46	if (payload->size < header_len) {
	47	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	48	header_len, payload->size);
	49	ret = -1;
	50	goto error;
	51	}
	52	memcpy(&header, payload->data, header_len);
	53
	54	header.session_name_len = be32toh(header.session_name_len);
	55	header.hostname_len = be32toh(header.hostname_len);
	56	header.live_timer = be32toh(header.live_timer);
	57
23c8ff50 JG	58	lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);
23c8ff50 JG	59
f86f6389 JR	60	received_names_size = header.session_name_len + header.hostname_len;
	61	if (payload->size < header_len + received_names_size) {
	62	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	63	header_len + received_names_size, payload->size);
	64	ret = -1;
	65	goto error;
	66	}
	67
	68	/* Validate length against defined constant. */
	69	if (header.session_name_len > LTTNG_NAME_MAX) {
	70	ret = -ENAMETOOLONG;
	71	ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
	72	goto error;
	73	}
	74	if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
	75	ret = -ENAMETOOLONG;
	76	ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX);
	77	goto error;
	78	}
	79
	80	session_name_view = lttng_buffer_view_from_view(payload, header_len,
	81	header.session_name_len);
	82	hostname_view = lttng_buffer_view_from_view(payload,
	83	header_len + header.session_name_len, header.hostname_len);
	84
	85	/* Validate that names are NULL terminated. */
	86	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	87	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	88	ret = -1;
	89	goto error;
	90	}
	91
	92	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	93	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	94	ret = -1;
	95	goto error;
	96	}
	97
	98	/*
	99	* Length and null-termination check are already performed.
	100	* LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected.
	101	*/
	102	strcpy(session_name, session_name_view.data);
	103	strcpy(hostname, hostname_view.data);
	104
	105	*live_timer = header.live_timer;
	106	*snapshot = !!header.snapshot;
	107
	108	ret = 0;
	109
	110	error:
	111	return ret;
	112	}
2f21a469 JR	113
	114	/*
	115	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	116	*/
	117	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
	118	char ret_path_name, char ret_channel_name,
0b50e4b3 JG	119	uint64_t tracefile_size, uint64_t tracefile_count,
0b50e4b3 JG	120	uint64_t *trace_archive_id)
2f21a469 JR	121	{
	122	int ret;
	123	struct lttcomm_relayd_add_stream_2_11 header;
	124	size_t header_len, received_names_size;
	125	struct lttng_buffer_view channel_name_view;
	126	struct lttng_buffer_view pathname_view;
	127	char *path_name = NULL;
	128	char *channel_name = NULL;
	129
	130	header_len = sizeof(header);
	131
	132	if (payload->size < header_len) {
	133	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	134	header_len, payload->size);
	135	ret = -1;
	136	goto error;
	137	}
	138	memcpy(&header, payload->data, header_len);
	139
	140	header.channel_name_len = be32toh(header.channel_name_len);
	141	header.pathname_len = be32toh(header.pathname_len);
	142	header.tracefile_size = be64toh(header.tracefile_size);
	143	header.tracefile_count = be64toh(header.tracefile_count);
0b50e4b3	144	header.trace_archive_id = be64toh(header.trace_archive_id);
2f21a469 JR	145
	146	received_names_size = header.channel_name_len + header.pathname_len;
	147	if (payload->size < header_len + received_names_size) {
	148	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	149	header_len + received_names_size, payload->size);
	150	ret = -1;
	151	goto error;
	152	}
	153
	154	/* Validate length against defined constant. */
	155	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	156	ret = -ENAMETOOLONG;
	157	ERR("Channel name too long");
	158	goto error;
	159	}
	160	if (header.pathname_len > LTTNG_NAME_MAX) {
	161	ret = -ENAMETOOLONG;
	162	ERR("Pathname too long");
	163	goto error;
	164	}
	165
	166	/* Validate that names are (NULL terminated. */
	167	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
	168	header.channel_name_len);
	169	pathname_view = lttng_buffer_view_from_view(payload,
	170	header_len + header.channel_name_len, header.pathname_len);
	171
	172	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	173	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	174	ret = -1;
	175	goto error;
	176	}
	177
	178	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	179	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	180	ret = -1;
	181	goto error;
	182	}
	183
	184	channel_name = strdup(channel_name_view.data);
	185	if (!channel_name) {
	186	ret = -errno;
	187	PERROR("Channel name allocation");
	188	goto error;
	189	}
	190
	191	path_name = create_output_path(pathname_view.data);
	192	if (!path_name) {
	193	PERROR("Path name allocation");
	194	ret = -ENOMEM;
	195	goto error;
	196	}
	197
	198	*tracefile_size = header.tracefile_size;
	199	*tracefile_count = header.tracefile_count;
0b50e4b3	200	*trace_archive_id = header.trace_archive_id;
2f21a469 JR	201	*ret_path_name = path_name;
	202	*ret_channel_name = channel_name;
	203	/* Move ownership to caller */
	204	path_name = NULL;
	205	channel_name = NULL;
	206	ret = 0;
	207	error:
	208	free(channel_name);
	209	free(path_name);
	210	return ret;
	211	}