X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fcmd-2-11.c;h=cd23f22d6f3405bcf9913db0c4d97dff7b6736dc;hp=993062ba72c20f424f7493806e7a43ead80ab965;hb=3e6e0df2f8f9f23d252c2508b6d741916dfcc4b3;hpb=f86f6389a47137d2f5e8fc707916b6650fd1de00 diff --git a/src/bin/lttng-relayd/cmd-2-11.c b/src/bin/lttng-relayd/cmd-2-11.c index 993062ba7..cd23f22d6 100644 --- a/src/bin/lttng-relayd/cmd-2-11.c +++ b/src/bin/lttng-relayd/cmd-2-11.c @@ -1,18 +1,8 @@ /* - * Copyright (C) 2018 - Jonathan Rajotte + * Copyright (C) 2018 Jonathan Rajotte * - * 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. + * SPDX-License-Identifier: GPL-2.0-only * - * 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 @@ -27,17 +17,22 @@ #include #include "cmd-2-11.h" -#include "lttng-relayd.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) + 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; + 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); @@ -51,9 +46,16 @@ int cmd_create_session_2_11(const struct lttng_buffer_view *payload, 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; + 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); @@ -66,17 +68,48 @@ int cmd_create_session_2_11(const struct lttng_buffer_view *payload, 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; + } - session_name_view = lttng_buffer_view_from_view(payload, header_len, + 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, - header_len + header.session_name_len, header.hostname_len); + 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') { @@ -91,18 +124,141 @@ int cmd_create_session_2_11(const struct lttng_buffer_view *payload, 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 and LTTNG_HOST_NAME_MAX max size are expected. + * 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); + 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; +}