[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,
		time_t *creation_time)
{
	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;
	header.creation_time = be64toh(header.creation_time);

	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;
	*creation_time = (time_t) header.creation_time;

	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_chunk_id = be64toh(header.trace_chunk_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 = strdup(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_chunk_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,
db1da059 JG	36	bool has_current_chunk, uint64_t current_chunk_id,
db1da059 JG	37	time_t *creation_time)
f86f6389 JR	38	{
	39	int ret;
	40	struct lttcomm_relayd_create_session_2_11 header;
	41	size_t header_len, received_names_size;
	42	struct lttng_buffer_view session_name_view;
	43	struct lttng_buffer_view hostname_view;
	44
	45	header_len = sizeof(header);
	46
	47	if (payload->size < header_len) {
	48	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	49	header_len, payload->size);
	50	ret = -1;
	51	goto error;
	52	}
	53	memcpy(&header, payload->data, header_len);
	54
	55	header.session_name_len = be32toh(header.session_name_len);
	56	header.hostname_len = be32toh(header.hostname_len);
	57	header.live_timer = be32toh(header.live_timer);
84fa4db5 JG	58	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
84fa4db5 JG	59	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
db1da059	60	header.creation_time = be64toh(header.creation_time);
f86f6389	61
23c8ff50 JG	62	lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);
23c8ff50 JG	63
f86f6389 JR	64	received_names_size = header.session_name_len + header.hostname_len;
	65	if (payload->size < header_len + received_names_size) {
	66	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	67	header_len + received_names_size, payload->size);
	68	ret = -1;
	69	goto error;
	70	}
	71
	72	/* Validate length against defined constant. */
	73	if (header.session_name_len > LTTNG_NAME_MAX) {
	74	ret = -ENAMETOOLONG;
	75	ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
	76	goto error;
	77	}
	78	if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
	79	ret = -ENAMETOOLONG;
	80	ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX);
	81	goto error;
	82	}
	83
	84	session_name_view = lttng_buffer_view_from_view(payload, header_len,
	85	header.session_name_len);
	86	hostname_view = lttng_buffer_view_from_view(payload,
	87	header_len + header.session_name_len, header.hostname_len);
	88
	89	/* Validate that names are NULL terminated. */
	90	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	91	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	92	ret = -1;
	93	goto error;
	94	}
	95
	96	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	97	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	98	ret = -1;
	99	goto error;
	100	}
	101
	102	/*
	103	* Length and null-termination check are already performed.
	104	* LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected.
	105	*/
	106	strcpy(session_name, session_name_view.data);
	107	strcpy(hostname, hostname_view.data);
	108
	109	*live_timer = header.live_timer;
	110	*snapshot = !!header.snapshot;
84fa4db5 JG	111	*current_chunk_id = header.current_chunk_id.value;
84fa4db5 JG	112	*has_current_chunk = header.current_chunk_id.is_set;
db1da059	113	*creation_time = (time_t) header.creation_time;
f86f6389 JR	114
	115	ret = 0;
	116
	117	error:
	118	return ret;
	119	}
2f21a469 JR	120
	121	/*
	122	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	123	*/
	124	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
	125	char ret_path_name, char ret_channel_name,
0b50e4b3 JG	126	uint64_t tracefile_size, uint64_t tracefile_count,
0b50e4b3 JG	127	uint64_t *trace_archive_id)
2f21a469 JR	128	{
	129	int ret;
	130	struct lttcomm_relayd_add_stream_2_11 header;
	131	size_t header_len, received_names_size;
	132	struct lttng_buffer_view channel_name_view;
	133	struct lttng_buffer_view pathname_view;
	134	char *path_name = NULL;
	135	char *channel_name = NULL;
	136
	137	header_len = sizeof(header);
	138
	139	if (payload->size < header_len) {
	140	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	141	header_len, payload->size);
	142	ret = -1;
	143	goto error;
	144	}
	145	memcpy(&header, payload->data, header_len);
	146
	147	header.channel_name_len = be32toh(header.channel_name_len);
	148	header.pathname_len = be32toh(header.pathname_len);
	149	header.tracefile_size = be64toh(header.tracefile_size);
	150	header.tracefile_count = be64toh(header.tracefile_count);
348a81dc	151	header.trace_chunk_id = be64toh(header.trace_chunk_id);
2f21a469 JR	152
	153	received_names_size = header.channel_name_len + header.pathname_len;
	154	if (payload->size < header_len + received_names_size) {
	155	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	156	header_len + received_names_size, payload->size);
	157	ret = -1;
	158	goto error;
	159	}
	160
	161	/* Validate length against defined constant. */
	162	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	163	ret = -ENAMETOOLONG;
	164	ERR("Channel name too long");
	165	goto error;
	166	}
	167	if (header.pathname_len > LTTNG_NAME_MAX) {
	168	ret = -ENAMETOOLONG;
	169	ERR("Pathname too long");
	170	goto error;
	171	}
	172
	173	/* Validate that names are (NULL terminated. */
	174	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
	175	header.channel_name_len);
	176	pathname_view = lttng_buffer_view_from_view(payload,
	177	header_len + header.channel_name_len, header.pathname_len);
	178
	179	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	180	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	181	ret = -1;
	182	goto error;
	183	}
	184
	185	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	186	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	187	ret = -1;
	188	goto error;
	189	}
	190
	191	channel_name = strdup(channel_name_view.data);
	192	if (!channel_name) {
	193	ret = -errno;
	194	PERROR("Channel name allocation");
	195	goto error;
	196	}
	197
348a81dc	198	path_name = strdup(pathname_view.data);
2f21a469 JR	199	if (!path_name) {
	200	PERROR("Path name allocation");
	201	ret = -ENOMEM;
	202	goto error;
	203	}
	204
	205	*tracefile_size = header.tracefile_size;
	206	*tracefile_count = header.tracefile_count;
348a81dc	207	*trace_archive_id = header.trace_chunk_id;
2f21a469 JR	208	*ret_path_name = path_name;
	209	*ret_channel_name = channel_name;
	210	/* Move ownership to caller */
	211	path_name = NULL;
	212	channel_name = NULL;
	213	ret = 0;
	214	error:
	215	free(channel_name);
	216	free(path_name);
	217	return ret;
	218	}