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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, | |
34 | uint32_t *live_timer, bool *snapshot) | |
35 | { | |
36 | int ret; | |
37 | struct lttcomm_relayd_create_session_2_11 header; | |
38 | size_t header_len, received_names_size; | |
39 | struct lttng_buffer_view session_name_view; | |
40 | struct lttng_buffer_view hostname_view; | |
41 | ||
42 | header_len = sizeof(header); | |
43 | ||
44 | if (payload->size < header_len) { | |
45 | ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes", | |
46 | header_len, payload->size); | |
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); | |
54 | header.live_timer = be32toh(header.live_timer); | |
55 | ||
56 | received_names_size = header.session_name_len + header.hostname_len; | |
57 | if (payload->size < header_len + received_names_size) { | |
58 | ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes", | |
59 | header_len + received_names_size, payload->size); | |
60 | ret = -1; | |
61 | goto error; | |
62 | } | |
63 | ||
64 | /* Validate length against defined constant. */ | |
65 | if (header.session_name_len > LTTNG_NAME_MAX) { | |
66 | ret = -ENAMETOOLONG; | |
67 | ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX); | |
68 | goto error; | |
69 | } | |
70 | if (header.hostname_len > LTTNG_HOST_NAME_MAX) { | |
71 | ret = -ENAMETOOLONG; | |
72 | ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX); | |
73 | goto error; | |
74 | } | |
75 | ||
76 | session_name_view = lttng_buffer_view_from_view(payload, header_len, | |
77 | header.session_name_len); | |
78 | hostname_view = lttng_buffer_view_from_view(payload, | |
79 | header_len + header.session_name_len, header.hostname_len); | |
80 | ||
81 | /* Validate that names are NULL terminated. */ | |
82 | if (session_name_view.data[session_name_view.size - 1] != '\0') { | |
83 | ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)"); | |
84 | ret = -1; | |
85 | goto error; | |
86 | } | |
87 | ||
88 | if (hostname_view.data[hostname_view.size - 1] != '\0') { | |
89 | ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)"); | |
90 | ret = -1; | |
91 | goto error; | |
92 | } | |
93 | ||
94 | /* | |
95 | * Length and null-termination check are already performed. | |
96 | * LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected. | |
97 | */ | |
98 | strcpy(session_name, session_name_view.data); | |
99 | strcpy(hostname, hostname_view.data); | |
100 | ||
101 | *live_timer = header.live_timer; | |
102 | *snapshot = !!header.snapshot; | |
103 | ||
104 | ret = 0; | |
105 | ||
106 | error: | |
107 | return ret; | |
108 | } | |
2f21a469 JR |
109 | |
110 | /* | |
111 | * cmd_recv_stream_2_11 allocates path_name and channel_name. | |
112 | */ | |
113 | int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload, | |
114 | char **ret_path_name, char **ret_channel_name, | |
0b50e4b3 JG |
115 | uint64_t *tracefile_size, uint64_t *tracefile_count, |
116 | uint64_t *trace_archive_id) | |
2f21a469 JR |
117 | { |
118 | int ret; | |
119 | struct lttcomm_relayd_add_stream_2_11 header; | |
120 | size_t header_len, received_names_size; | |
121 | struct lttng_buffer_view channel_name_view; | |
122 | struct lttng_buffer_view pathname_view; | |
123 | char *path_name = NULL; | |
124 | char *channel_name = NULL; | |
125 | ||
126 | header_len = sizeof(header); | |
127 | ||
128 | if (payload->size < header_len) { | |
129 | ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes", | |
130 | header_len, payload->size); | |
131 | ret = -1; | |
132 | goto error; | |
133 | } | |
134 | memcpy(&header, payload->data, header_len); | |
135 | ||
136 | header.channel_name_len = be32toh(header.channel_name_len); | |
137 | header.pathname_len = be32toh(header.pathname_len); | |
138 | header.tracefile_size = be64toh(header.tracefile_size); | |
139 | header.tracefile_count = be64toh(header.tracefile_count); | |
0b50e4b3 | 140 | header.trace_archive_id = be64toh(header.trace_archive_id); |
2f21a469 JR |
141 | |
142 | received_names_size = header.channel_name_len + header.pathname_len; | |
143 | if (payload->size < header_len + received_names_size) { | |
144 | ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes", | |
145 | header_len + received_names_size, payload->size); | |
146 | ret = -1; | |
147 | goto error; | |
148 | } | |
149 | ||
150 | /* Validate length against defined constant. */ | |
151 | if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) { | |
152 | ret = -ENAMETOOLONG; | |
153 | ERR("Channel name too long"); | |
154 | goto error; | |
155 | } | |
156 | if (header.pathname_len > LTTNG_NAME_MAX) { | |
157 | ret = -ENAMETOOLONG; | |
158 | ERR("Pathname too long"); | |
159 | goto error; | |
160 | } | |
161 | ||
162 | /* Validate that names are (NULL terminated. */ | |
163 | channel_name_view = lttng_buffer_view_from_view(payload, header_len, | |
164 | header.channel_name_len); | |
165 | pathname_view = lttng_buffer_view_from_view(payload, | |
166 | header_len + header.channel_name_len, header.pathname_len); | |
167 | ||
168 | if (channel_name_view.data[channel_name_view.size - 1] != '\0') { | |
169 | ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)"); | |
170 | ret = -1; | |
171 | goto error; | |
172 | } | |
173 | ||
174 | if (pathname_view.data[pathname_view.size - 1] != '\0') { | |
175 | ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)"); | |
176 | ret = -1; | |
177 | goto error; | |
178 | } | |
179 | ||
180 | channel_name = strdup(channel_name_view.data); | |
181 | if (!channel_name) { | |
182 | ret = -errno; | |
183 | PERROR("Channel name allocation"); | |
184 | goto error; | |
185 | } | |
186 | ||
187 | path_name = create_output_path(pathname_view.data); | |
188 | if (!path_name) { | |
189 | PERROR("Path name allocation"); | |
190 | ret = -ENOMEM; | |
191 | goto error; | |
192 | } | |
193 | ||
194 | *tracefile_size = header.tracefile_size; | |
195 | *tracefile_count = header.tracefile_count; | |
0b50e4b3 | 196 | *trace_archive_id = header.trace_archive_id; |
2f21a469 JR |
197 | *ret_path_name = path_name; |
198 | *ret_channel_name = channel_name; | |
199 | /* Move ownership to caller */ | |
200 | path_name = NULL; | |
201 | channel_name = NULL; | |
202 | ret = 0; | |
203 | error: | |
204 | free(channel_name); | |
205 | free(path_name); | |
206 | return ret; | |
207 | } |