Commit | Line | Data |
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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 | |
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, |
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; |
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); |
51 | header.current_chunk_id.is_set = !!header.current_chunk_id.is_set; | |
db1da059 | 52 | header.creation_time = be64toh(header.creation_time); |
f86f6389 | 53 | |
23c8ff50 JG |
54 | lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid); |
55 | ||
6fa5fe7c MD |
56 | received_names_size = header.session_name_len + header.hostname_len + |
57 | header.base_path_len; | |
f86f6389 JR |
58 | if (payload->size < header_len + received_names_size) { |
59 | ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes", | |
60 | header_len + received_names_size, payload->size); | |
61 | ret = -1; | |
62 | goto error; | |
63 | } | |
64 | ||
65 | /* Validate length against defined constant. */ | |
66 | if (header.session_name_len > LTTNG_NAME_MAX) { | |
67 | ret = -ENAMETOOLONG; | |
68 | ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX); | |
69 | goto error; | |
e7f8eff3 JG |
70 | } else if (header.session_name_len == 0) { |
71 | ret = -EINVAL; | |
72 | ERR("Illegal session name length of 0 received"); | |
73 | goto error; | |
f86f6389 JR |
74 | } |
75 | if (header.hostname_len > LTTNG_HOST_NAME_MAX) { | |
76 | ret = -ENAMETOOLONG; | |
77 | ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX); | |
78 | goto error; | |
79 | } | |
6fa5fe7c MD |
80 | if (header.base_path_len > LTTNG_PATH_MAX) { |
81 | ret = -ENAMETOOLONG; | |
82 | ERR("Length of base_path (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.base_path_len, PATH_MAX); | |
83 | goto error; | |
84 | } | |
f86f6389 | 85 | |
6fa5fe7c MD |
86 | offset = header_len; |
87 | session_name_view = lttng_buffer_view_from_view(payload, offset, | |
f86f6389 | 88 | header.session_name_len); |
3e6e0df2 JG |
89 | if (!lttng_buffer_view_is_valid(&session_name_view)) { |
90 | ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain session name"); | |
91 | ret = -1; | |
92 | goto error; | |
93 | } | |
94 | ||
6fa5fe7c | 95 | offset += header.session_name_len; |
f86f6389 | 96 | hostname_view = lttng_buffer_view_from_view(payload, |
6fa5fe7c | 97 | offset, header.hostname_len); |
3e6e0df2 JG |
98 | if (!lttng_buffer_view_is_valid(&hostname_view)) { |
99 | ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain hostname"); | |
100 | ret = -1; | |
101 | goto error; | |
102 | } | |
103 | ||
6fa5fe7c MD |
104 | offset += header.hostname_len; |
105 | base_path_view = lttng_buffer_view_from_view(payload, | |
106 | offset, header.base_path_len); | |
3e6e0df2 JG |
107 | if (header.base_path_len > 0 && !lttng_buffer_view_is_valid(&base_path_view)) { |
108 | ERR("Invalid payload in \"cmd_create_session_2_11\": buffer too short to contain base path"); | |
109 | ret = -1; | |
110 | goto error; | |
111 | } | |
f86f6389 JR |
112 | |
113 | /* Validate that names are NULL terminated. */ | |
114 | if (session_name_view.data[session_name_view.size - 1] != '\0') { | |
115 | ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)"); | |
116 | ret = -1; | |
117 | goto error; | |
118 | } | |
119 | ||
120 | if (hostname_view.data[hostname_view.size - 1] != '\0') { | |
121 | ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)"); | |
122 | ret = -1; | |
123 | goto error; | |
124 | } | |
125 | ||
6fa5fe7c MD |
126 | if (base_path_view.size != 0 && |
127 | base_path_view.data[base_path_view.size - 1] != '\0') { | |
128 | ERR("cmd_create_session_2_11 base_path is invalid (not NULL terminated)"); | |
129 | ret = -1; | |
130 | goto error; | |
131 | } | |
132 | ||
f86f6389 JR |
133 | /* |
134 | * Length and null-termination check are already performed. | |
6fa5fe7c | 135 | * LTTNG_NAME_MAX, LTTNG_HOST_NAME_MAX, and LTTNG_PATH_MAX max sizes are expected. |
f86f6389 JR |
136 | */ |
137 | strcpy(session_name, session_name_view.data); | |
138 | strcpy(hostname, hostname_view.data); | |
6fa5fe7c | 139 | strcpy(base_path, base_path_view.size ? base_path_view.data : ""); |
f86f6389 JR |
140 | |
141 | *live_timer = header.live_timer; | |
142 | *snapshot = !!header.snapshot; | |
84fa4db5 JG |
143 | *current_chunk_id = header.current_chunk_id.value; |
144 | *has_current_chunk = header.current_chunk_id.is_set; | |
db1da059 | 145 | *creation_time = (time_t) header.creation_time; |
46ef2188 MD |
146 | *session_name_contains_creation_time = |
147 | header.session_name_contains_creation_time; | |
f86f6389 JR |
148 | |
149 | ret = 0; | |
150 | ||
151 | error: | |
152 | return ret; | |
153 | } | |
2f21a469 JR |
154 | |
155 | /* | |
156 | * cmd_recv_stream_2_11 allocates path_name and channel_name. | |
157 | */ | |
158 | int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload, | |
159 | char **ret_path_name, char **ret_channel_name, | |
0b50e4b3 JG |
160 | uint64_t *tracefile_size, uint64_t *tracefile_count, |
161 | uint64_t *trace_archive_id) | |
2f21a469 JR |
162 | { |
163 | int ret; | |
164 | struct lttcomm_relayd_add_stream_2_11 header; | |
165 | size_t header_len, received_names_size; | |
166 | struct lttng_buffer_view channel_name_view; | |
167 | struct lttng_buffer_view pathname_view; | |
168 | char *path_name = NULL; | |
169 | char *channel_name = NULL; | |
170 | ||
171 | header_len = sizeof(header); | |
172 | ||
173 | if (payload->size < header_len) { | |
174 | ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes", | |
175 | header_len, payload->size); | |
176 | ret = -1; | |
177 | goto error; | |
178 | } | |
179 | memcpy(&header, payload->data, header_len); | |
180 | ||
181 | header.channel_name_len = be32toh(header.channel_name_len); | |
182 | header.pathname_len = be32toh(header.pathname_len); | |
183 | header.tracefile_size = be64toh(header.tracefile_size); | |
184 | header.tracefile_count = be64toh(header.tracefile_count); | |
348a81dc | 185 | header.trace_chunk_id = be64toh(header.trace_chunk_id); |
2f21a469 JR |
186 | |
187 | received_names_size = header.channel_name_len + header.pathname_len; | |
188 | if (payload->size < header_len + received_names_size) { | |
189 | ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes", | |
190 | header_len + received_names_size, payload->size); | |
191 | ret = -1; | |
192 | goto error; | |
193 | } | |
194 | ||
195 | /* Validate length against defined constant. */ | |
196 | if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) { | |
197 | ret = -ENAMETOOLONG; | |
198 | ERR("Channel name too long"); | |
199 | goto error; | |
200 | } | |
201 | if (header.pathname_len > LTTNG_NAME_MAX) { | |
202 | ret = -ENAMETOOLONG; | |
203 | ERR("Pathname too long"); | |
204 | goto error; | |
205 | } | |
206 | ||
207 | /* Validate that names are (NULL terminated. */ | |
208 | channel_name_view = lttng_buffer_view_from_view(payload, header_len, | |
3e6e0df2 JG |
209 | header.channel_name_len); |
210 | if (!lttng_buffer_view_is_valid(&channel_name_view)) { | |
211 | ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for channel name"); | |
212 | ret = -1; | |
213 | goto error; | |
214 | } | |
2f21a469 JR |
215 | |
216 | if (channel_name_view.data[channel_name_view.size - 1] != '\0') { | |
217 | ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)"); | |
218 | ret = -1; | |
219 | goto error; | |
220 | } | |
221 | ||
3e6e0df2 JG |
222 | pathname_view = lttng_buffer_view_from_view(payload, |
223 | header_len + header.channel_name_len, header.pathname_len); | |
224 | if (!lttng_buffer_view_is_valid(&pathname_view)) { | |
225 | ERR("Invalid payload received in \"cmd_recv_stream_2_11\": buffer too short for path name"); | |
226 | ret = -1; | |
227 | goto error; | |
228 | } | |
229 | ||
2f21a469 JR |
230 | if (pathname_view.data[pathname_view.size - 1] != '\0') { |
231 | ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)"); | |
232 | ret = -1; | |
233 | goto error; | |
234 | } | |
235 | ||
236 | channel_name = strdup(channel_name_view.data); | |
237 | if (!channel_name) { | |
238 | ret = -errno; | |
239 | PERROR("Channel name allocation"); | |
240 | goto error; | |
241 | } | |
242 | ||
348a81dc | 243 | path_name = strdup(pathname_view.data); |
2f21a469 JR |
244 | if (!path_name) { |
245 | PERROR("Path name allocation"); | |
246 | ret = -ENOMEM; | |
247 | goto error; | |
248 | } | |
249 | ||
250 | *tracefile_size = header.tracefile_size; | |
251 | *tracefile_count = header.tracefile_count; | |
348a81dc | 252 | *trace_archive_id = header.trace_chunk_id; |
2f21a469 JR |
253 | *ret_path_name = path_name; |
254 | *ret_channel_name = channel_name; | |
255 | /* Move ownership to caller */ | |
256 | path_name = NULL; | |
257 | channel_name = NULL; | |
258 | ret = 0; | |
259 | error: | |
260 | free(channel_name); | |
261 | free(path_name); | |
262 | return ret; | |
263 | } |