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

/*
 * Copyright (C) 2018 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#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	1	/*
ab5be9fa	2	* Copyright (C) 2018 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
f86f6389	3	*
ab5be9fa	4	* SPDX-License-Identifier: GPL-2.0-only
f86f6389	5	*
f86f6389 JR	6	*/
	7
	8	#define _LGPL_SOURCE
	9	#include <assert.h>
	10	#include <inttypes.h>
	11
	12	#include <common/common.h>
	13	#include <common/sessiond-comm/relayd.h>
	14
	15	#include <common/compat/endian.h>
	16	#include <common/compat/string.h>
	17	#include <lttng/constant.h>
	18
	19	#include "cmd-2-11.h"
2f21a469	20	#include "utils.h"
f86f6389 JR	21
f86f6389 JR	22	int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
6fa5fe7c	23	char session_name, char hostname, char *base_path,
23c8ff50	24	uint32_t live_timer, bool snapshot,
1e791a74	25	uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
db1da059	26	bool has_current_chunk, uint64_t current_chunk_id,
46ef2188 MD	27	time_t *creation_time,
46ef2188 MD	28	bool *session_name_contains_creation_time)
f86f6389 JR	29	{
	30	int ret;
	31	struct lttcomm_relayd_create_session_2_11 header;
6fa5fe7c	32	size_t header_len, received_names_size, offset;
f86f6389 JR	33	struct lttng_buffer_view session_name_view;
f86f6389 JR	34	struct lttng_buffer_view hostname_view;
6fa5fe7c	35	struct lttng_buffer_view base_path_view;
f86f6389 JR	36
	37	header_len = sizeof(header);
	38
	39	if (payload->size < header_len) {
	40	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	41	header_len, payload->size);
	42	ret = -1;
	43	goto error;
	44	}
	45	memcpy(&header, payload->data, header_len);
	46
	47	header.session_name_len = be32toh(header.session_name_len);
	48	header.hostname_len = be32toh(header.hostname_len);
6fa5fe7c	49	header.base_path_len = be32toh(header.base_path_len);
f86f6389	50	header.live_timer = be32toh(header.live_timer);
84fa4db5 JG	51	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
84fa4db5 JG	52	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
db1da059	53	header.creation_time = be64toh(header.creation_time);
f86f6389	54
23c8ff50 JG	55	lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);
23c8ff50 JG	56
6fa5fe7c MD	57	received_names_size = header.session_name_len + header.hostname_len +
6fa5fe7c MD	58	header.base_path_len;
f86f6389 JR	59	if (payload->size < header_len + received_names_size) {
	60	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	61	header_len + received_names_size, payload->size);
	62	ret = -1;
	63	goto error;
	64	}
	65
	66	/* Validate length against defined constant. */
	67	if (header.session_name_len > LTTNG_NAME_MAX) {
	68	ret = -ENAMETOOLONG;
	69	ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
	70	goto error;
e7f8eff3 JG	71	} else if (header.session_name_len == 0) {
	72	ret = -EINVAL;
	73	ERR("Illegal session name length of 0 received");
	74	goto error;
f86f6389 JR	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	}
6fa5fe7c MD	81	if (header.base_path_len > LTTNG_PATH_MAX) {
	82	ret = -ENAMETOOLONG;
	83	ERR("Length of base_path (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.base_path_len, PATH_MAX);
	84	goto error;
	85	}
f86f6389	86
6fa5fe7c MD	87	offset = header_len;
6fa5fe7c MD	88	session_name_view = lttng_buffer_view_from_view(payload, offset,
f86f6389	89	header.session_name_len);
6fa5fe7c	90	offset += header.session_name_len;
f86f6389	91	hostname_view = lttng_buffer_view_from_view(payload,
6fa5fe7c MD	92	offset, header.hostname_len);
	93	offset += header.hostname_len;
	94	base_path_view = lttng_buffer_view_from_view(payload,
	95	offset, header.base_path_len);
f86f6389 JR	96
	97	/* Validate that names are NULL terminated. */
	98	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	99	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	100	ret = -1;
	101	goto error;
	102	}
	103
	104	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	105	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	106	ret = -1;
	107	goto error;
	108	}
	109
6fa5fe7c MD	110	if (base_path_view.size != 0 &&
	111	base_path_view.data[base_path_view.size - 1] != '\0') {
	112	ERR("cmd_create_session_2_11 base_path is invalid (not NULL terminated)");
	113	ret = -1;
	114	goto error;
	115	}
	116
f86f6389 JR	117	/*
f86f6389 JR	118	* Length and null-termination check are already performed.
6fa5fe7c	119	* LTTNG_NAME_MAX, LTTNG_HOST_NAME_MAX, and LTTNG_PATH_MAX max sizes are expected.
f86f6389 JR	120	*/
	121	strcpy(session_name, session_name_view.data);
	122	strcpy(hostname, hostname_view.data);
6fa5fe7c	123	strcpy(base_path, base_path_view.size ? base_path_view.data : "");
f86f6389 JR	124
	125	*live_timer = header.live_timer;
	126	*snapshot = !!header.snapshot;
84fa4db5 JG	127	*current_chunk_id = header.current_chunk_id.value;
84fa4db5 JG	128	*has_current_chunk = header.current_chunk_id.is_set;
db1da059	129	*creation_time = (time_t) header.creation_time;
46ef2188 MD	130	*session_name_contains_creation_time =
46ef2188 MD	131	header.session_name_contains_creation_time;
f86f6389 JR	132
	133	ret = 0;
	134
	135	error:
	136	return ret;
	137	}
2f21a469 JR	138
	139	/*
	140	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	141	*/
	142	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
	143	char ret_path_name, char ret_channel_name,
0b50e4b3 JG	144	uint64_t tracefile_size, uint64_t tracefile_count,
0b50e4b3 JG	145	uint64_t *trace_archive_id)
2f21a469 JR	146	{
	147	int ret;
	148	struct lttcomm_relayd_add_stream_2_11 header;
	149	size_t header_len, received_names_size;
	150	struct lttng_buffer_view channel_name_view;
	151	struct lttng_buffer_view pathname_view;
	152	char *path_name = NULL;
	153	char *channel_name = NULL;
	154
	155	header_len = sizeof(header);
	156
	157	if (payload->size < header_len) {
	158	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	159	header_len, payload->size);
	160	ret = -1;
	161	goto error;
	162	}
	163	memcpy(&header, payload->data, header_len);
	164
	165	header.channel_name_len = be32toh(header.channel_name_len);
	166	header.pathname_len = be32toh(header.pathname_len);
	167	header.tracefile_size = be64toh(header.tracefile_size);
	168	header.tracefile_count = be64toh(header.tracefile_count);
348a81dc	169	header.trace_chunk_id = be64toh(header.trace_chunk_id);
2f21a469 JR	170
	171	received_names_size = header.channel_name_len + header.pathname_len;
	172	if (payload->size < header_len + received_names_size) {
	173	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	174	header_len + received_names_size, payload->size);
	175	ret = -1;
	176	goto error;
	177	}
	178
	179	/* Validate length against defined constant. */
	180	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	181	ret = -ENAMETOOLONG;
	182	ERR("Channel name too long");
	183	goto error;
	184	}
	185	if (header.pathname_len > LTTNG_NAME_MAX) {
	186	ret = -ENAMETOOLONG;
	187	ERR("Pathname too long");
	188	goto error;
	189	}
	190
	191	/* Validate that names are (NULL terminated. */
	192	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
	193	header.channel_name_len);
	194	pathname_view = lttng_buffer_view_from_view(payload,
	195	header_len + header.channel_name_len, header.pathname_len);
	196
	197	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	198	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	199	ret = -1;
	200	goto error;
	201	}
	202
	203	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	204	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	205	ret = -1;
	206	goto error;
	207	}
	208
	209	channel_name = strdup(channel_name_view.data);
	210	if (!channel_name) {
	211	ret = -errno;
	212	PERROR("Channel name allocation");
	213	goto error;
	214	}
	215
348a81dc	216	path_name = strdup(pathname_view.data);
2f21a469 JR	217	if (!path_name) {
	218	PERROR("Path name allocation");
	219	ret = -ENOMEM;
	220	goto error;
	221	}
	222
	223	*tracefile_size = header.tracefile_size;
	224	*tracefile_count = header.tracefile_count;
348a81dc	225	*trace_archive_id = header.trace_chunk_id;
2f21a469 JR	226	*ret_path_name = path_name;
	227	*ret_channel_name = channel_name;
	228	/* Move ownership to caller */
	229	path_name = NULL;
	230	channel_name = NULL;
	231	ret = 0;
	232	error:
	233	free(channel_name);
	234	free(path_name);
	235	return ret;
	236	}