Fix: bindings import segfaults on missing hash_key_u64
[lttng-tools.git] / src / bin / lttng-relayd / cmd-2-11.c
CommitLineData
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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"
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31
32int cmd_create_session_2_11(const struct lttng_buffer_view *payload,
33 char *session_name, char *hostname,
23c8ff50 34 uint32_t *live_timer, bool *snapshot,
1e791a74 35 uint64_t *id_sessiond, lttng_uuid sessiond_uuid,
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36 bool *has_current_chunk, uint64_t *current_chunk_id,
37 time_t *creation_time)
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38{
39 int ret;
40 struct lttcomm_relayd_create_session_2_11 header;
41 size_t header_len, received_names_size;
42 struct lttng_buffer_view session_name_view;
43 struct lttng_buffer_view hostname_view;
44
45 header_len = sizeof(header);
46
47 if (payload->size < header_len) {
48 ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
49 header_len, payload->size);
50 ret = -1;
51 goto error;
52 }
53 memcpy(&header, payload->data, header_len);
54
55 header.session_name_len = be32toh(header.session_name_len);
56 header.hostname_len = be32toh(header.hostname_len);
57 header.live_timer = be32toh(header.live_timer);
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58 header.current_chunk_id.value = be64toh(header.current_chunk_id.value);
59 header.current_chunk_id.is_set = !!header.current_chunk_id.is_set;
db1da059 60 header.creation_time = be64toh(header.creation_time);
f86f6389 61
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62 lttng_uuid_copy(sessiond_uuid, header.sessiond_uuid);
63
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64 received_names_size = header.session_name_len + header.hostname_len;
65 if (payload->size < header_len + received_names_size) {
66 ERR("Unexpected payload size in \"cmd_create_session_2_11\": expected >= %zu bytes, got %zu bytes",
67 header_len + received_names_size, payload->size);
68 ret = -1;
69 goto error;
70 }
71
72 /* Validate length against defined constant. */
73 if (header.session_name_len > LTTNG_NAME_MAX) {
74 ret = -ENAMETOOLONG;
75 ERR("Length of session name (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.session_name_len, LTTNG_NAME_MAX);
76 goto error;
77 }
78 if (header.hostname_len > LTTNG_HOST_NAME_MAX) {
79 ret = -ENAMETOOLONG;
80 ERR("Length of hostname (%" PRIu32 " bytes) received in create_session command exceeds maximum length (%d bytes)", header.hostname_len, LTTNG_HOST_NAME_MAX);
81 goto error;
82 }
83
84 session_name_view = lttng_buffer_view_from_view(payload, header_len,
85 header.session_name_len);
86 hostname_view = lttng_buffer_view_from_view(payload,
87 header_len + header.session_name_len, header.hostname_len);
88
89 /* Validate that names are NULL terminated. */
90 if (session_name_view.data[session_name_view.size - 1] != '\0') {
91 ERR("cmd_create_session_2_11 session_name is invalid (not NULL terminated)");
92 ret = -1;
93 goto error;
94 }
95
96 if (hostname_view.data[hostname_view.size - 1] != '\0') {
97 ERR("cmd_create_session_2_11 hostname is invalid (not NULL terminated)");
98 ret = -1;
99 goto error;
100 }
101
102 /*
103 * Length and null-termination check are already performed.
104 * LTTNG_NAME_MAX and LTTNG_HOST_NAME_MAX max size are expected.
105 */
106 strcpy(session_name, session_name_view.data);
107 strcpy(hostname, hostname_view.data);
108
109 *live_timer = header.live_timer;
110 *snapshot = !!header.snapshot;
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111 *current_chunk_id = header.current_chunk_id.value;
112 *has_current_chunk = header.current_chunk_id.is_set;
db1da059 113 *creation_time = (time_t) header.creation_time;
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114
115 ret = 0;
116
117error:
118 return ret;
119}
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120
121/*
122 * cmd_recv_stream_2_11 allocates path_name and channel_name.
123 */
124int cmd_recv_stream_2_11(const struct lttng_buffer_view *payload,
125 char **ret_path_name, char **ret_channel_name,
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126 uint64_t *tracefile_size, uint64_t *tracefile_count,
127 uint64_t *trace_archive_id)
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128{
129 int ret;
130 struct lttcomm_relayd_add_stream_2_11 header;
131 size_t header_len, received_names_size;
132 struct lttng_buffer_view channel_name_view;
133 struct lttng_buffer_view pathname_view;
134 char *path_name = NULL;
135 char *channel_name = NULL;
136
137 header_len = sizeof(header);
138
139 if (payload->size < header_len) {
140 ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
141 header_len, payload->size);
142 ret = -1;
143 goto error;
144 }
145 memcpy(&header, payload->data, header_len);
146
147 header.channel_name_len = be32toh(header.channel_name_len);
148 header.pathname_len = be32toh(header.pathname_len);
149 header.tracefile_size = be64toh(header.tracefile_size);
150 header.tracefile_count = be64toh(header.tracefile_count);
348a81dc 151 header.trace_chunk_id = be64toh(header.trace_chunk_id);
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152
153 received_names_size = header.channel_name_len + header.pathname_len;
154 if (payload->size < header_len + received_names_size) {
155 ERR("Unexpected payload size in \"cmd_recv_stream_2_11\": expected >= %zu bytes, got %zu bytes",
156 header_len + received_names_size, payload->size);
157 ret = -1;
158 goto error;
159 }
160
161 /* Validate length against defined constant. */
162 if (header.channel_name_len > DEFAULT_STREAM_NAME_LEN) {
163 ret = -ENAMETOOLONG;
164 ERR("Channel name too long");
165 goto error;
166 }
167 if (header.pathname_len > LTTNG_NAME_MAX) {
168 ret = -ENAMETOOLONG;
169 ERR("Pathname too long");
170 goto error;
171 }
172
173 /* Validate that names are (NULL terminated. */
174 channel_name_view = lttng_buffer_view_from_view(payload, header_len,
175 header.channel_name_len);
176 pathname_view = lttng_buffer_view_from_view(payload,
177 header_len + header.channel_name_len, header.pathname_len);
178
179 if (channel_name_view.data[channel_name_view.size - 1] != '\0') {
180 ERR("cmd_recv_stream_2_11 channel_name is invalid (not NULL terminated)");
181 ret = -1;
182 goto error;
183 }
184
185 if (pathname_view.data[pathname_view.size - 1] != '\0') {
186 ERR("cmd_recv_stream_2_11 patname is invalid (not NULL terminated)");
187 ret = -1;
188 goto error;
189 }
190
191 channel_name = strdup(channel_name_view.data);
192 if (!channel_name) {
193 ret = -errno;
194 PERROR("Channel name allocation");
195 goto error;
196 }
197
348a81dc 198 path_name = strdup(pathname_view.data);
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199 if (!path_name) {
200 PERROR("Path name allocation");
201 ret = -ENOMEM;
202 goto error;
203 }
204
205 *tracefile_size = header.tracefile_size;
206 *tracefile_count = header.tracefile_count;
348a81dc 207 *trace_archive_id = header.trace_chunk_id;
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208 *ret_path_name = path_name;
209 *ret_channel_name = channel_name;
210 /* Move ownership to caller */
211 path_name = NULL;
212 channel_name = NULL;
213 ret = 0;
214error:
215 free(channel_name);
216 free(path_name);
217 return ret;
218}
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