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

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

#define _LGPL_SOURCE
#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);
	header.session_id = be64toh(header.session_id);

	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);
	if (!lttng_buffer_view_is_valid(&session_name_view)) {
		ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain session name");
		ret = -1;
		goto error;
	}

	offset += header.session_name_len;
	hostname_view = lttng_buffer_view_from_view(payload,
			offset, header.hostname_len);
	if (!lttng_buffer_view_is_valid(&hostname_view)) {
		ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain hostname");
		ret = -1;
		goto error;
	}

	offset += header.hostname_len;
	base_path_view = lttng_buffer_view_from_view(payload,
			offset, header.base_path_len);
	if (header.base_path_len > 0 && !lttng_buffer_view_is_valid(&base_path_view)) {
		ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain base path");
		ret = -1;
		goto error;
	}

	/* 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;
	*id_sessiond = header.session_id;

	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);
	if (!lttng_buffer_view_is_valid(&channel_name_view)) {
		ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for channel name");
		ret = -1;
		goto error;
	}

	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;
	}

	pathname_view = lttng_buffer_view_from_view(payload,
			header_len + header.channel_name_len, header.pathname_len);
	if (!lttng_buffer_view_is_valid(&pathname_view)) {
		ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for path name");
		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
f86f6389 JR	9	#include <inttypes.h>
	10
	11	#include <common/common.h>
	12	#include <common/sessiond-comm/relayd.h>
	13
	14	#include <common/compat/endian.h>
	15	#include <common/compat/string.h>
	16	#include <lttng/constant.h>
	17
	18	#include "cmd-2-11.h"
2f21a469	19	#include "utils.h"
f86f6389 JR	20
f86f6389 JR	21	int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
6fa5fe7c	22	char session_name, char hostname, char *base_path,
23c8ff50	23	uint32_t live_timer, bool snapshot,
1e791a74	24	uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
db1da059	25	bool has_current_chunk, uint64_t current_chunk_id,
46ef2188 MD	26	time_t *creation_time,
46ef2188 MD	27	bool *session_name_contains_creation_time)
f86f6389 JR	28	{
	29	int ret;
	30	struct lttcomm_relayd_create_session_2_11 header;
6fa5fe7c	31	size_t header_len, received_names_size, offset;
f86f6389 JR	32	struct lttng_buffer_view session_name_view;
f86f6389 JR	33	struct lttng_buffer_view hostname_view;
6fa5fe7c	34	struct lttng_buffer_view base_path_view;
f86f6389 JR	35
	36	header_len = sizeof(header);
	37
	38	if (payload->size < header_len) {
	39	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
	40	header_len, payload->size);
	41	ret = -1;
	42	goto error;
	43	}
	44	memcpy(&header, payload->data, header_len);
	45
	46	header.session_name_len = be32toh(header.session_name_len);
	47	header.hostname_len = be32toh(header.hostname_len);
6fa5fe7c	48	header.base_path_len = be32toh(header.base_path_len);
f86f6389	49	header.live_timer = be32toh(header.live_timer);
84fa4db5 JG	50	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
84fa4db5 JG	51	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
db1da059	52	header.creation_time = be64toh(header.creation_time);
d1bc11c3	53	header.session_id = be64toh(header.session_id);
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);
3e6e0df2 JG	90	if (!lttng_buffer_view_is_valid(&session_name_view)) {
	91	ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain session name");
	92	ret = -1;
	93	goto error;
	94	}
	95
6fa5fe7c	96	offset += header.session_name_len;
f86f6389	97	hostname_view = lttng_buffer_view_from_view(payload,
6fa5fe7c	98	offset, header.hostname_len);
3e6e0df2 JG	99	if (!lttng_buffer_view_is_valid(&hostname_view)) {
	100	ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain hostname");
	101	ret = -1;
	102	goto error;
	103	}
	104
6fa5fe7c MD	105	offset += header.hostname_len;
	106	base_path_view = lttng_buffer_view_from_view(payload,
	107	offset, header.base_path_len);
3e6e0df2 JG	108	if (header.base_path_len > 0 && !lttng_buffer_view_is_valid(&base_path_view)) {
	109	ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain base path");
	110	ret = -1;
	111	goto error;
	112	}
f86f6389 JR	113
	114	/* Validate that names are NULL terminated. */
	115	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	116	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	117	ret = -1;
	118	goto error;
	119	}
	120
	121	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	122	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	123	ret = -1;
	124	goto error;
	125	}
	126
6fa5fe7c MD	127	if (base_path_view.size != 0 &&
	128	base_path_view.data[base_path_view.size - 1] != '\0') {
	129	ERR("cmd_create_session_2_11 base_path is invalid (not NULL terminated)");
	130	ret = -1;
	131	goto error;
	132	}
	133
f86f6389 JR	134	/*
f86f6389 JR	135	* Length and null-termination check are already performed.
6fa5fe7c	136	* LTTNG_NAME_MAX, LTTNG_HOST_NAME_MAX, and LTTNG_PATH_MAX max sizes are expected.
f86f6389 JR	137	*/
	138	strcpy(session_name, session_name_view.data);
	139	strcpy(hostname, hostname_view.data);
6fa5fe7c	140	strcpy(base_path, base_path_view.size ? base_path_view.data : "");
f86f6389 JR	141
	142	*live_timer = header.live_timer;
	143	*snapshot = !!header.snapshot;
84fa4db5 JG	144	*current_chunk_id = header.current_chunk_id.value;
84fa4db5 JG	145	*has_current_chunk = header.current_chunk_id.is_set;
db1da059	146	*creation_time = (time_t) header.creation_time;
46ef2188 MD	147	*session_name_contains_creation_time =
46ef2188 MD	148	header.session_name_contains_creation_time;
d1bc11c3	149	*id_sessiond = header.session_id;
f86f6389 JR	150
	151	ret = 0;
	152
	153	error:
	154	return ret;
	155	}
2f21a469 JR	156
	157	/*
	158	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	159	*/
	160	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
	161	char ret_path_name, char ret_channel_name,
0b50e4b3 JG	162	uint64_t tracefile_size, uint64_t tracefile_count,
0b50e4b3 JG	163	uint64_t *trace_archive_id)
2f21a469 JR	164	{
	165	int ret;
	166	struct lttcomm_relayd_add_stream_2_11 header;
	167	size_t header_len, received_names_size;
	168	struct lttng_buffer_view channel_name_view;
	169	struct lttng_buffer_view pathname_view;
	170	char *path_name = NULL;
	171	char *channel_name = NULL;
	172
	173	header_len = sizeof(header);
	174
	175	if (payload->size < header_len) {
	176	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	177	header_len, payload->size);
	178	ret = -1;
	179	goto error;
	180	}
	181	memcpy(&header, payload->data, header_len);
	182
	183	header.channel_name_len = be32toh(header.channel_name_len);
	184	header.pathname_len = be32toh(header.pathname_len);
	185	header.tracefile_size = be64toh(header.tracefile_size);
	186	header.tracefile_count = be64toh(header.tracefile_count);
348a81dc	187	header.trace_chunk_id = be64toh(header.trace_chunk_id);
2f21a469 JR	188
	189	received_names_size = header.channel_name_len + header.pathname_len;
	190	if (payload->size < header_len + received_names_size) {
	191	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
	192	header_len + received_names_size, payload->size);
	193	ret = -1;
	194	goto error;
	195	}
	196
	197	/* Validate length against defined constant. */
	198	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	199	ret = -ENAMETOOLONG;
	200	ERR("Channel name too long");
	201	goto error;
	202	}
	203	if (header.pathname_len > LTTNG_NAME_MAX) {
	204	ret = -ENAMETOOLONG;
	205	ERR("Pathname too long");
	206	goto error;
	207	}
	208
	209	/* Validate that names are (NULL terminated. */
	210	channel_name_view = lttng_buffer_view_from_view(payload, header_len,
3e6e0df2 JG	211	header.channel_name_len);
	212	if (!lttng_buffer_view_is_valid(&channel_name_view)) {
	213	ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for channel name");
	214	ret = -1;
	215	goto error;
	216	}
2f21a469 JR	217
	218	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	219	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	220	ret = -1;
	221	goto error;
	222	}
	223
3e6e0df2 JG	224	pathname_view = lttng_buffer_view_from_view(payload,
	225	header_len + header.channel_name_len, header.pathname_len);
	226	if (!lttng_buffer_view_is_valid(&pathname_view)) {
	227	ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for path name");
	228	ret = -1;
	229	goto error;
	230	}
	231
2f21a469 JR	232	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	233	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	234	ret = -1;
	235	goto error;
	236	}
	237
	238	channel_name = strdup(channel_name_view.data);
	239	if (!channel_name) {
	240	ret = -errno;
	241	PERROR("Channel name allocation");
	242	goto error;
	243	}
	244
348a81dc	245	path_name = strdup(pathname_view.data);
2f21a469 JR	246	if (!path_name) {
	247	PERROR("Path name allocation");
	248	ret = -ENOMEM;
	249	goto error;
	250	}
	251
	252	*tracefile_size = header.tracefile_size;
	253	*tracefile_count = header.tracefile_count;
348a81dc	254	*trace_archive_id = header.trace_chunk_id;
2f21a469 JR	255	*ret_path_name = path_name;
	256	*ret_channel_name = channel_name;
	257	/* Move ownership to caller */
	258	path_name = NULL;
	259	channel_name = NULL;
	260	ret = 0;
	261	error:
	262	free(channel_name);
	263	free(path_name);
	264	return ret;
	265	}