[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 "cmd-2-11.hpp"
#include "utils.hpp"

#include <common/common.hpp>
#include <common/compat/endian.hpp>
#include <common/compat/string.hpp>
#include <common/sessiond-comm/relayd.hpp>

#include <lttng/constant.h>

#include <inttypes.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);

	std::copy(std::begin(header.sessiond_uuid),
		  std::end(header.sessiond_uuid),
		  sessiond_uuid.begin());

	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 = nullptr;
	char *channel_name = nullptr;

	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 = nullptr;
	channel_name = nullptr;
	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
28ab034a JG	9	#include "cmd-2-11.hpp"
28ab034a JG	10	#include "utils.hpp"
f86f6389	11
c9e313bc	12	#include <common/common.hpp>
c9e313bc SM	13	#include <common/compat/endian.hpp>
c9e313bc SM	14	#include <common/compat/string.hpp>
28ab034a JG	15	#include <common/sessiond-comm/relayd.hpp>
28ab034a JG	16
f86f6389 JR	17	#include <lttng/constant.h>
f86f6389 JR	18
28ab034a	19	#include <inttypes.h>
f86f6389 JR	20
f86f6389 JR	21	int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
28ab034a JG	22	char *session_name,
	23	char *hostname,
	24	char *base_path,
	25	uint32_t *live_timer,
	26	bool *snapshot,
	27	uint64_t *id_sessiond,
	28	lttng_uuid& sessiond_uuid,
	29	bool *has_current_chunk,
	30	uint64_t *current_chunk_id,
	31	time_t *creation_time,
	32	bool *session_name_contains_creation_time)
f86f6389 JR	33	{
	34	int ret;
	35	struct lttcomm_relayd_create_session_2_11 header;
6fa5fe7c	36	size_t header_len, received_names_size, offset;
f86f6389 JR	37	struct lttng_buffer_view session_name_view;
f86f6389 JR	38	struct lttng_buffer_view hostname_view;
6fa5fe7c	39	struct lttng_buffer_view base_path_view;
f86f6389 JR	40
	41	header_len = sizeof(header);
	42
	43	if (payload->size < header_len) {
	44	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
28ab034a JG	45	header_len,
28ab034a JG	46	payload->size);
f86f6389 JR	47	ret = -1;
	48	goto error;
	49	}
	50	memcpy(&header, payload->data, header_len);
	51
	52	header.session_name_len = be32toh(header.session_name_len);
	53	header.hostname_len = be32toh(header.hostname_len);
6fa5fe7c	54	header.base_path_len = be32toh(header.base_path_len);
f86f6389	55	header.live_timer = be32toh(header.live_timer);
84fa4db5 JG	56	header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
84fa4db5 JG	57	header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
db1da059	58	header.creation_time = be64toh(header.creation_time);
d1bc11c3	59	header.session_id = be64toh(header.session_id);
f86f6389	60
28ab034a JG	61	std::copy(std::begin(header.sessiond_uuid),
	62	std::end(header.sessiond_uuid),
	63	sessiond_uuid.begin());
23c8ff50	64
28ab034a	65	received_names_size = header.session_name_len + header.hostname_len + header.base_path_len;
f86f6389 JR	66	if (payload->size < header_len + received_names_size) {
f86f6389 JR	67	ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
28ab034a JG	68	header_len + received_names_size,
28ab034a JG	69	payload->size);
f86f6389 JR	70	ret = -1;
	71	goto error;
	72	}
	73
	74	/* Validate length against defined constant. */
	75	if (header.session_name_len > LTTNG_NAME_MAX) {
	76	ret = -ENAMETOOLONG;
28ab034a JG	77	ERR("Length of session name (%" PRIu32
	78	" bytes) received in create_session command exceeds maximum length (%d bytes)",
	79	header.session_name_len,
	80	LTTNG_NAME_MAX);
f86f6389	81	goto error;
e7f8eff3 JG	82	} else if (header.session_name_len == 0) {
	83	ret = -EINVAL;
	84	ERR("Illegal session name length of 0 received");
	85	goto error;
f86f6389 JR	86	}
	87	if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
	88	ret = -ENAMETOOLONG;
28ab034a JG	89	ERR("Length of hostname (%" PRIu32
	90	" bytes) received in create_session command exceeds maximum length (%d bytes)",
	91	header.hostname_len,
	92	LTTNG_HOST_NAME_MAX);
f86f6389 JR	93	goto error;
f86f6389 JR	94	}
6fa5fe7c MD	95	if (header.base_path_len > LTTNG_PATH_MAX) {
6fa5fe7c MD	96	ret = -ENAMETOOLONG;
28ab034a JG	97	ERR("Length of base_path (%" PRIu32
	98	" bytes) received in create_session command exceeds maximum length (%d bytes)",
	99	header.base_path_len,
	100	PATH_MAX);
6fa5fe7c MD	101	goto error;
6fa5fe7c MD	102	}
f86f6389	103
6fa5fe7c	104	offset = header_len;
28ab034a	105	session_name_view = lttng_buffer_view_from_view(payload, offset, header.session_name_len);
3e6e0df2 JG	106	if (!lttng_buffer_view_is_valid(&session_name_view)) {
	107	ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain session name");
	108	ret = -1;
	109	goto error;
	110	}
	111
6fa5fe7c	112	offset += header.session_name_len;
28ab034a	113	hostname_view = lttng_buffer_view_from_view(payload, offset, header.hostname_len);
3e6e0df2 JG	114	if (!lttng_buffer_view_is_valid(&hostname_view)) {
	115	ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain hostname");
	116	ret = -1;
	117	goto error;
	118	}
	119
6fa5fe7c	120	offset += header.hostname_len;
28ab034a	121	base_path_view = lttng_buffer_view_from_view(payload, offset, header.base_path_len);
3e6e0df2 JG	122	if (header.base_path_len > 0 && !lttng_buffer_view_is_valid(&base_path_view)) {
	123	ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain base path");
	124	ret = -1;
	125	goto error;
	126	}
f86f6389 JR	127
	128	/* Validate that names are NULL terminated. */
	129	if (session_name_view.data[session_name_view.size - 1] != '\0') {
	130	ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
	131	ret = -1;
	132	goto error;
	133	}
	134
	135	if (hostname_view.data[hostname_view.size - 1] != '\0') {
	136	ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
	137	ret = -1;
	138	goto error;
	139	}
	140
28ab034a	141	if (base_path_view.size != 0 && base_path_view.data[base_path_view.size - 1] != '\0') {
6fa5fe7c MD	142	ERR("cmd_create_session_2_11 base_path is invalid (not NULL terminated)");
	143	ret = -1;
	144	goto error;
	145	}
	146
f86f6389 JR	147	/*
f86f6389 JR	148	* Length and null-termination check are already performed.
6fa5fe7c	149	* LTTNG_NAME_MAX, LTTNG_HOST_NAME_MAX, and LTTNG_PATH_MAX max sizes are expected.
f86f6389 JR	150	*/
	151	strcpy(session_name, session_name_view.data);
	152	strcpy(hostname, hostname_view.data);
6fa5fe7c	153	strcpy(base_path, base_path_view.size ? base_path_view.data : "");
f86f6389 JR	154
	155	*live_timer = header.live_timer;
	156	*snapshot = !!header.snapshot;
84fa4db5 JG	157	*current_chunk_id = header.current_chunk_id.value;
84fa4db5 JG	158	*has_current_chunk = header.current_chunk_id.is_set;
db1da059	159	*creation_time = (time_t) header.creation_time;
28ab034a	160	*session_name_contains_creation_time = header.session_name_contains_creation_time;
d1bc11c3	161	*id_sessiond = header.session_id;
f86f6389 JR	162
	163	ret = 0;
	164
	165	error:
	166	return ret;
	167	}
2f21a469 JR	168
	169	/*
	170	* cmd_recv_stream_2_11 allocates path_name and channel_name.
	171	*/
	172	int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
28ab034a JG	173	char **ret_path_name,
	174	char **ret_channel_name,
	175	uint64_t *tracefile_size,
	176	uint64_t *tracefile_count,
	177	uint64_t *trace_archive_id)
2f21a469 JR	178	{
	179	int ret;
	180	struct lttcomm_relayd_add_stream_2_11 header;
	181	size_t header_len, received_names_size;
	182	struct lttng_buffer_view channel_name_view;
	183	struct lttng_buffer_view pathname_view;
cd9adb8b JG	184	char *path_name = nullptr;
cd9adb8b JG	185	char *channel_name = nullptr;
2f21a469 JR	186
	187	header_len = sizeof(header);
	188
	189	if (payload->size < header_len) {
	190	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
28ab034a JG	191	header_len,
28ab034a JG	192	payload->size);
2f21a469 JR	193	ret = -1;
	194	goto error;
	195	}
	196	memcpy(&header, payload->data, header_len);
	197
	198	header.channel_name_len = be32toh(header.channel_name_len);
	199	header.pathname_len = be32toh(header.pathname_len);
	200	header.tracefile_size = be64toh(header.tracefile_size);
	201	header.tracefile_count = be64toh(header.tracefile_count);
348a81dc	202	header.trace_chunk_id = be64toh(header.trace_chunk_id);
2f21a469 JR	203
	204	received_names_size = header.channel_name_len + header.pathname_len;
	205	if (payload->size < header_len + received_names_size) {
	206	ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
28ab034a JG	207	header_len + received_names_size,
28ab034a JG	208	payload->size);
2f21a469 JR	209	ret = -1;
	210	goto error;
	211	}
	212
	213	/* Validate length against defined constant. */
	214	if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
	215	ret = -ENAMETOOLONG;
	216	ERR("Channel name too long");
	217	goto error;
	218	}
	219	if (header.pathname_len > LTTNG_NAME_MAX) {
	220	ret = -ENAMETOOLONG;
	221	ERR("Pathname too long");
	222	goto error;
	223	}
	224
	225	/* Validate that names are (NULL terminated. */
28ab034a JG	226	channel_name_view =
28ab034a JG	227	lttng_buffer_view_from_view(payload, header_len, header.channel_name_len);
3e6e0df2 JG	228	if (!lttng_buffer_view_is_valid(&channel_name_view)) {
	229	ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for channel name");
	230	ret = -1;
	231	goto error;
	232	}
2f21a469 JR	233
	234	if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
	235	ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
	236	ret = -1;
	237	goto error;
	238	}
	239
28ab034a JG	240	pathname_view = lttng_buffer_view_from_view(
28ab034a JG	241	payload, header_len + header.channel_name_len, header.pathname_len);
3e6e0df2 JG	242	if (!lttng_buffer_view_is_valid(&pathname_view)) {
	243	ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for path name");
	244	ret = -1;
	245	goto error;
	246	}
	247
2f21a469 JR	248	if (pathname_view.data[pathname_view.size - 1] != '\0') {
	249	ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
	250	ret = -1;
	251	goto error;
	252	}
	253
	254	channel_name = strdup(channel_name_view.data);
	255	if (!channel_name) {
	256	ret = -errno;
	257	PERROR("Channel name allocation");
	258	goto error;
	259	}
	260
348a81dc	261	path_name = strdup(pathname_view.data);
2f21a469 JR	262	if (!path_name) {
	263	PERROR("Path name allocation");
	264	ret = -ENOMEM;
	265	goto error;
	266	}
	267
	268	*tracefile_size = header.tracefile_size;
	269	*tracefile_count = header.tracefile_count;
348a81dc	270	*trace_archive_id = header.trace_chunk_id;
2f21a469 JR	271	*ret_path_name = path_name;
	272	*ret_channel_name = channel_name;
	273	/* Move ownership to caller */
cd9adb8b JG	274	path_name = nullptr;
cd9adb8b JG	275	channel_name = nullptr;
2f21a469 JR	276	ret = 0;
	277	error:
	278	free(channel_name);
	279	free(path_name);
	280	return ret;
	281	}