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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 | |
32 | int cmd_create_session_2_11(const struct lttng_buffer_view *payload, | |
33 | char *session_name, char *hostname, | |
1f916b5d | 34 | uint32_t *live_timer, bool *snapshot, |
b2c25d00 | 35 | uint64_t *id_sessiond, lttng_uuid sessiond_uuid, |
cb034ca2 | 36 | bool *has_current_chunk, uint64_t *current_chunk_id) |
f86f6389 JR |
37 | { |
38 | int ret; | |
39 | struct lttcomm_relayd_create_session_2_11 header; | |
40 | size_t header_len, received_names_size; | |
41 | struct lttng_buffer_view session_name_view; | |
42 | struct lttng_buffer_view hostname_view; | |
43 | ||
44 | header_len = sizeof(header); | |
45 | ||
46 | if (payload->size < header_len) { | |
47 | ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes", | |
48 | header_len, payload->size); | |
49 | ret = -1; | |
50 | goto error; | |
51 | } | |
52 | memcpy(&header, payload->data, header_len); | |
53 | ||
54 | header.session_name_len = be32toh(header.session_name_len); | |
55 | header.hostname_len = be32toh(header.hostname_len); | |
56 | header.live_timer = be32toh(header.live_timer); | |
cb034ca2 JG |
57 | header.current_chunk_id.value = be64toh(header.current_chunk_id.value); |
58 | header.current_chunk_id.is_set = !!header.current_chunk_id.is_set; | |
f86f6389 | 59 | |
1f916b5d JG |
60 | lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid); |
61 | ||
f86f6389 JR |
62 | received_names_size = header.session_name_len + header.hostname_len; |
63 | if (payload->size < header_len + received_names_size) { | |
64 | ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes", | |
65 | header_len + received_names_size, payload->size); | |
66 | ret = -1; | |
67 | goto error; | |
68 | } | |
69 | ||
70 | /* Validate length against defined constant. */ | |
71 | if (header.session_name_len > LTTNG_NAME_MAX) { | |
72 | ret = -ENAMETOOLONG; | |
73 | ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX); | |
74 | goto error; | |
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 | } | |
81 | ||
82 | session_name_view = lttng_buffer_view_from_view(payload, header_len, | |
83 | header.session_name_len); | |
84 | hostname_view = lttng_buffer_view_from_view(payload, | |
85 | header_len + header.session_name_len, header.hostname_len); | |
86 | ||
87 | /* Validate that names are NULL terminated. */ | |
88 | if (session_name_view.data[session_name_view.size - 1] != '\0') { | |
89 | ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)"); | |
90 | ret = -1; | |
91 | goto error; | |
92 | } | |
93 | ||
94 | if (hostname_view.data[hostname_view.size - 1] != '\0') { | |
95 | ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)"); | |
96 | ret = -1; | |
97 | goto error; | |
98 | } | |
99 | ||
100 | /* | |
101 | * Length and null-termination check are already performed. | |
102 | * LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected. | |
103 | */ | |
104 | strcpy(session_name, session_name_view.data); | |
105 | strcpy(hostname, hostname_view.data); | |
106 | ||
107 | *live_timer = header.live_timer; | |
108 | *snapshot = !!header.snapshot; | |
cb034ca2 JG |
109 | *current_chunk_id = header.current_chunk_id.value; |
110 | *has_current_chunk = header.current_chunk_id.is_set; | |
f86f6389 JR |
111 | |
112 | ret = 0; | |
113 | ||
114 | error: | |
115 | return ret; | |
116 | } | |
2f21a469 JR |
117 | |
118 | /* | |
119 | * cmd_recv_stream_2_11 allocates path_name and channel_name. | |
120 | */ | |
121 | int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload, | |
122 | char **ret_path_name, char **ret_channel_name, | |
0b50e4b3 JG |
123 | uint64_t *tracefile_size, uint64_t *tracefile_count, |
124 | uint64_t *trace_archive_id) | |
2f21a469 JR |
125 | { |
126 | int ret; | |
127 | struct lttcomm_relayd_add_stream_2_11 header; | |
128 | size_t header_len, received_names_size; | |
129 | struct lttng_buffer_view channel_name_view; | |
130 | struct lttng_buffer_view pathname_view; | |
131 | char *path_name = NULL; | |
132 | char *channel_name = NULL; | |
133 | ||
134 | header_len = sizeof(header); | |
135 | ||
136 | if (payload->size < header_len) { | |
137 | ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes", | |
138 | header_len, payload->size); | |
139 | ret = -1; | |
140 | goto error; | |
141 | } | |
142 | memcpy(&header, payload->data, header_len); | |
143 | ||
144 | header.channel_name_len = be32toh(header.channel_name_len); | |
145 | header.pathname_len = be32toh(header.pathname_len); | |
146 | header.tracefile_size = be64toh(header.tracefile_size); | |
147 | header.tracefile_count = be64toh(header.tracefile_count); | |
0b50e4b3 | 148 | header.trace_archive_id = be64toh(header.trace_archive_id); |
2f21a469 JR |
149 | |
150 | received_names_size = header.channel_name_len + header.pathname_len; | |
151 | if (payload->size < header_len + received_names_size) { | |
152 | ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes", | |
153 | header_len + received_names_size, payload->size); | |
154 | ret = -1; | |
155 | goto error; | |
156 | } | |
157 | ||
158 | /* Validate length against defined constant. */ | |
159 | if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) { | |
160 | ret = -ENAMETOOLONG; | |
161 | ERR("Channel name too long"); | |
162 | goto error; | |
163 | } | |
164 | if (header.pathname_len > LTTNG_NAME_MAX) { | |
165 | ret = -ENAMETOOLONG; | |
166 | ERR("Pathname too long"); | |
167 | goto error; | |
168 | } | |
169 | ||
170 | /* Validate that names are (NULL terminated. */ | |
171 | channel_name_view = lttng_buffer_view_from_view(payload, header_len, | |
172 | header.channel_name_len); | |
173 | pathname_view = lttng_buffer_view_from_view(payload, | |
174 | header_len + header.channel_name_len, header.pathname_len); | |
175 | ||
176 | if (channel_name_view.data[channel_name_view.size - 1] != '\0') { | |
177 | ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)"); | |
178 | ret = -1; | |
179 | goto error; | |
180 | } | |
181 | ||
182 | if (pathname_view.data[pathname_view.size - 1] != '\0') { | |
183 | ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)"); | |
184 | ret = -1; | |
185 | goto error; | |
186 | } | |
187 | ||
188 | channel_name = strdup(channel_name_view.data); | |
189 | if (!channel_name) { | |
190 | ret = -errno; | |
191 | PERROR("Channel name allocation"); | |
192 | goto error; | |
193 | } | |
194 | ||
195 | path_name = create_output_path(pathname_view.data); | |
196 | if (!path_name) { | |
197 | PERROR("Path name allocation"); | |
198 | ret = -ENOMEM; | |
199 | goto error; | |
200 | } | |
201 | ||
202 | *tracefile_size = header.tracefile_size; | |
203 | *tracefile_count = header.tracefile_count; | |
0b50e4b3 | 204 | *trace_archive_id = header.trace_archive_id; |
2f21a469 JR |
205 | *ret_path_name = path_name; |
206 | *ret_channel_name = channel_name; | |
207 | /* Move ownership to caller */ | |
208 | path_name = NULL; | |
209 | channel_name = NULL; | |
210 | ret = 0; | |
211 | error: | |
212 | free(channel_name); | |
213 | free(path_name); | |
214 | return ret; | |
215 | } |