[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, char *base_path,
		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,
		bool *session_name_contains_creation_time)
{
	int ret;
	struct lttcomm_relayd_create_session_2_11 header;
	size_t header_len, received_names_size, offset;
	struct lttng_buffer_view session_name_view;
	struct lttng_buffer_view hostname_view;
	struct lttng_buffer_view base_path_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.base_path_len = be32toh(header.base_path_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 +
				header.base_path_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;
	} else if (header.session_name_len == 0) {
		ret = -EINVAL;
		ERR("Illegal session name length of 0 received");
		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;
	}
	if (header.base_path_len > LTTNG_PATH_MAX) {
		ret = -ENAMETOOLONG;
		ERR("Length of base_path (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.base_path_len, PATH_MAX);
		goto error;
	}

	offset = header_len;
	session_name_view = lttng_buffer_view_from_view(payload, offset,
			header.session_name_len);
	offset += header.session_name_len;
	hostname_view = lttng_buffer_view_from_view(payload,
			offset, header.hostname_len);
	offset += header.hostname_len;
	base_path_view = lttng_buffer_view_from_view(payload,
			offset, header.base_path_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;
	}

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

	/*
	 * Length and null-termination check are already performed.
	 * LTTNG_NAME_MAX, LTTNG_HOST_NAME_MAX, and LTTNG_PATH_MAX max sizes are expected.
	 */
	strcpy(session_name, session_name_view.data);
	strcpy(hostname, hostname_view.data);
	strcpy(base_path, base_path_view.size ? base_path_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;
	*session_name_contains_creation_time =
		header.session_name_contains_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
f86f6389 JR	32	int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
6fa5fe7c	33	char session_name, char hostname, char *base_path,
23c8ff50	34	uint32_t live_timer, bool snapshot,
1e791a74	35	uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
db1da059	36	bool has_current_chunk, uint64_t current_chunk_id,
46ef2188 MD	37	time_t *creation_time,
46ef2188 MD	38	bool *session_name_contains_creation_time)
f86f6389 JR	39	{
	40	int ret;
	41	struct lttcomm_relayd_create_session_2_11 header;
6fa5fe7c	42	size_t header_len, received_names_size, offset;
f86f6389 JR	43	struct lttng_buffer_view session_name_view;
f86f6389 JR	44	struct lttng_buffer_view hostname_view;
6fa5fe7c	45	struct lttng_buffer_view base_path_view;
f86f6389 JR	46
	47	header_len = sizeof(header);
	48
	49	if (payload->size < header_len) {
	50	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	51	header_len, payload->size);
	52	ret = -1;
	53	goto error;
	54	}
	55	memcpy(&header, payload->data, header_len);
	56
	57	header.session_name_len = be32toh(header.session_name_len);
	58	header.hostname_len = be32toh(header.hostname_len);
6fa5fe7c	59	header.base_path_len = be32toh(header.base_path_len);
f86f6389	60	header.live_timer = be32toh(header.live_timer);
84fa4db5 JG	61	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
84fa4db5 JG	62	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
db1da059	63	header.creation_time = be64toh(header.creation_time);
f86f6389	64
23c8ff50 JG	65	lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);
23c8ff50 JG	66
6fa5fe7c MD	67	received_names_size = header.session_name_len + header.hostname_len +
6fa5fe7c MD	68	header.base_path_len;
f86f6389 JR	69	if (payload->size < header_len + received_names_size) {
	70	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	71	header_len + received_names_size, payload->size);
	72	ret = -1;
	73	goto error;
	74	}
	75
	76	/* Validate length against defined constant. */
	77	if (header.session_name_len > LTTNG_NAME_MAX) {
	78	ret = -ENAMETOOLONG;
	79	ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
	80	goto error;
e7f8eff3 JG	81	} else if (header.session_name_len == 0) {
	82	ret = -EINVAL;
	83	ERR("Illegal session name length of 0 received");
	84	goto error;
f86f6389 JR	85	}
	86	if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
	87	ret = -ENAMETOOLONG;
	88	ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX);
	89	goto error;
	90	}
6fa5fe7c MD	91	if (header.base_path_len > LTTNG_PATH_MAX) {
	92	ret = -ENAMETOOLONG;
	93	ERR("Length of base_path (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.base_path_len, PATH_MAX);
	94	goto error;
	95	}
f86f6389	96
6fa5fe7c MD	97	offset = header_len;
6fa5fe7c MD	98	session_name_view = lttng_buffer_view_from_view(payload, offset,
f86f6389	99	header.session_name_len);
6fa5fe7c	100	offset += header.session_name_len;
f86f6389	101	hostname_view = lttng_buffer_view_from_view(payload,
6fa5fe7c MD	102	offset, header.hostname_len);
	103	offset += header.hostname_len;
	104	base_path_view = lttng_buffer_view_from_view(payload,
	105	offset, header.base_path_len);
f86f6389 JR	106
	107	/* Validate that names are NULL terminated. */
	108	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	109	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	110	ret = -1;
	111	goto error;
	112	}
	113
	114	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	115	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	116	ret = -1;
	117	goto error;
	118	}
	119
6fa5fe7c MD	120	if (base_path_view.size != 0 &&
	121	base_path_view.data[base_path_view.size - 1] != '\0') {
	122	ERR("cmd_create_session_2_11 base_path is invalid (not NULL terminated)");
	123	ret = -1;
	124	goto error;
	125	}
	126
f86f6389 JR	127	/*
f86f6389 JR	128	* Length and null-termination check are already performed.
6fa5fe7c	129	* LTTNG_NAME_MAX, LTTNG_HOST_NAME_MAX, and LTTNG_PATH_MAX max sizes are expected.
f86f6389 JR	130	*/
	131	strcpy(session_name, session_name_view.data);
	132	strcpy(hostname, hostname_view.data);
6fa5fe7c	133	strcpy(base_path, base_path_view.size ? base_path_view.data : "");
f86f6389 JR	134
	135	*live_timer = header.live_timer;
	136	*snapshot = !!header.snapshot;
84fa4db5 JG	137	*current_chunk_id = header.current_chunk_id.value;
84fa4db5 JG	138	*has_current_chunk = header.current_chunk_id.is_set;
db1da059	139	*creation_time = (time_t) header.creation_time;
46ef2188 MD	140	*session_name_contains_creation_time =
46ef2188 MD	141	header.session_name_contains_creation_time;
f86f6389 JR	142
	143	ret = 0;
	144
	145	error:
	146	return ret;
	147	}
2f21a469 JR	148
	149	/*
	150	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	151	*/
	152	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
	153	char ret_path_name, char ret_channel_name,
0b50e4b3 JG	154	uint64_t tracefile_size, uint64_t tracefile_count,
0b50e4b3 JG	155	uint64_t *trace_archive_id)
2f21a469 JR	156	{
	157	int ret;
	158	struct lttcomm_relayd_add_stream_2_11 header;
	159	size_t header_len, received_names_size;
	160	struct lttng_buffer_view channel_name_view;
	161	struct lttng_buffer_view pathname_view;
	162	char *path_name = NULL;
	163	char *channel_name = NULL;
	164
	165	header_len = sizeof(header);
	166
	167	if (payload->size < header_len) {
	168	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	169	header_len, payload->size);
	170	ret = -1;
	171	goto error;
	172	}
	173	memcpy(&header, payload->data, header_len);
	174
	175	header.channel_name_len = be32toh(header.channel_name_len);
	176	header.pathname_len = be32toh(header.pathname_len);
	177	header.tracefile_size = be64toh(header.tracefile_size);
	178	header.tracefile_count = be64toh(header.tracefile_count);
348a81dc	179	header.trace_chunk_id = be64toh(header.trace_chunk_id);
2f21a469 JR	180
	181	received_names_size = header.channel_name_len + header.pathname_len;
	182	if (payload->size < header_len + received_names_size) {
	183	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	184	header_len + received_names_size, payload->size);
	185	ret = -1;
	186	goto error;
	187	}
	188
	189	/* Validate length against defined constant. */
	190	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	191	ret = -ENAMETOOLONG;
	192	ERR("Channel name too long");
	193	goto error;
	194	}
	195	if (header.pathname_len > LTTNG_NAME_MAX) {
	196	ret = -ENAMETOOLONG;
	197	ERR("Pathname too long");
	198	goto error;
	199	}
	200
	201	/* Validate that names are (NULL terminated. */
	202	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
	203	header.channel_name_len);
	204	pathname_view = lttng_buffer_view_from_view(payload,
	205	header_len + header.channel_name_len, header.pathname_len);
	206
	207	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	208	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	209	ret = -1;
	210	goto error;
	211	}
	212
	213	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	214	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	215	ret = -1;
	216	goto error;
	217	}
	218
	219	channel_name = strdup(channel_name_view.data);
	220	if (!channel_name) {
	221	ret = -errno;
	222	PERROR("Channel name allocation");
	223	goto error;
	224	}
	225
348a81dc	226	path_name = strdup(pathname_view.data);
2f21a469 JR	227	if (!path_name) {
	228	PERROR("Path name allocation");
	229	ret = -ENOMEM;
	230	goto error;
	231	}
	232
	233	*tracefile_size = header.tracefile_size;
	234	*tracefile_count = header.tracefile_count;
348a81dc	235	*trace_archive_id = header.trace_chunk_id;
2f21a469 JR	236	*ret_path_name = path_name;
	237	*ret_channel_name = channel_name;
	238	/* Move ownership to caller */
	239	path_name = NULL;
	240	channel_name = NULL;
	241	ret = 0;
	242	error:
	243	free(channel_name);
	244	free(path_name);
	245	return ret;
	246	}