[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,
		bool *has_current_chunk, 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);
	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;

	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;
	*current_chunk_id = header.current_chunk_id.value;
	*has_current_chunk = header.current_chunk_id.is_set;

	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	35	uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
84fa4db5	36	bool has_current_chunk, 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);
84fa4db5 JG	57	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
84fa4db5 JG	58	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
f86f6389	59
23c8ff50 JG	60	lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);
23c8ff50 JG	61
f86f6389 JR	62	received_names_size = header.session_name_len + header.hostname_len;
	63	if (payload->size < header_len + received_names_size) {
	64	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	65	header_len + received_names_size, payload->size);
	66	ret = -1;
	67	goto error;
	68	}
	69
	70	/* Validate length against defined constant. */
	71	if (header.session_name_len > LTTNG_NAME_MAX) {
	72	ret = -ENAMETOOLONG;
	73	ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
	74	goto error;
	75	}
	76	if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
	77	ret = -ENAMETOOLONG;
	78	ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX);
	79	goto error;
	80	}
	81
	82	session_name_view = lttng_buffer_view_from_view(payload, header_len,
	83	header.session_name_len);
	84	hostname_view = lttng_buffer_view_from_view(payload,
	85	header_len + header.session_name_len, header.hostname_len);
	86
	87	/* Validate that names are NULL terminated. */
	88	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	89	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	90	ret = -1;
	91	goto error;
	92	}
	93
	94	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	95	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	96	ret = -1;
	97	goto error;
	98	}
	99
	100	/*
	101	* Length and null-termination check are already performed.
	102	* LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected.
	103	*/
	104	strcpy(session_name, session_name_view.data);
	105	strcpy(hostname, hostname_view.data);
	106
	107	*live_timer = header.live_timer;
	108	*snapshot = !!header.snapshot;
84fa4db5 JG	109	*current_chunk_id = header.current_chunk_id.value;
84fa4db5 JG	110	*has_current_chunk = header.current_chunk_id.is_set;
f86f6389 JR	111
	112	ret = 0;
	113
	114	error:
	115	return ret;
	116	}
2f21a469 JR	117
	118	/*
	119	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	120	*/
	121	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
	122	char ret_path_name, char ret_channel_name,
0b50e4b3 JG	123	uint64_t tracefile_size, uint64_t tracefile_count,
0b50e4b3 JG	124	uint64_t *trace_archive_id)
2f21a469 JR	125	{
	126	int ret;
	127	struct lttcomm_relayd_add_stream_2_11 header;
	128	size_t header_len, received_names_size;
	129	struct lttng_buffer_view channel_name_view;
	130	struct lttng_buffer_view pathname_view;
	131	char *path_name = NULL;
	132	char *channel_name = NULL;
	133
	134	header_len = sizeof(header);
	135
	136	if (payload->size < header_len) {
	137	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	138	header_len, payload->size);
	139	ret = -1;
	140	goto error;
	141	}
	142	memcpy(&header, payload->data, header_len);
	143
	144	header.channel_name_len = be32toh(header.channel_name_len);
	145	header.pathname_len = be32toh(header.pathname_len);
	146	header.tracefile_size = be64toh(header.tracefile_size);
	147	header.tracefile_count = be64toh(header.tracefile_count);
0b50e4b3	148	header.trace_archive_id = be64toh(header.trace_archive_id);
2f21a469 JR	149
	150	received_names_size = header.channel_name_len + header.pathname_len;
	151	if (payload->size < header_len + received_names_size) {
	152	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	153	header_len + received_names_size, payload->size);
	154	ret = -1;
	155	goto error;
	156	}
	157
	158	/* Validate length against defined constant. */
	159	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	160	ret = -ENAMETOOLONG;
	161	ERR("Channel name too long");
	162	goto error;
	163	}
	164	if (header.pathname_len > LTTNG_NAME_MAX) {
	165	ret = -ENAMETOOLONG;
	166	ERR("Pathname too long");
	167	goto error;
	168	}
	169
	170	/* Validate that names are (NULL terminated. */
	171	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
	172	header.channel_name_len);
	173	pathname_view = lttng_buffer_view_from_view(payload,
	174	header_len + header.channel_name_len, header.pathname_len);
	175
	176	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	177	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	178	ret = -1;
	179	goto error;
	180	}
	181
	182	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	183	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	184	ret = -1;
	185	goto error;
	186	}
	187
	188	channel_name = strdup(channel_name_view.data);
	189	if (!channel_name) {
	190	ret = -errno;
	191	PERROR("Channel name allocation");
	192	goto error;
	193	}
	194
	195	path_name = create_output_path(pathname_view.data);
	196	if (!path_name) {
	197	PERROR("Path name allocation");
	198	ret = -ENOMEM;
	199	goto error;
	200	}
	201
	202	*tracefile_size = header.tracefile_size;
	203	*tracefile_count = header.tracefile_count;
0b50e4b3	204	*trace_archive_id = header.trace_archive_id;
2f21a469 JR	205	*ret_path_name = path_name;
	206	*ret_channel_name = channel_name;
	207	/* Move ownership to caller */
	208	path_name = NULL;
	209	channel_name = NULL;
	210	ret = 0;
	211	error:
	212	free(channel_name);
	213	free(path_name);
	214	return ret;
	215	}