Commit | Line | Data |
---|---|---|
b1acd2b3 JD |
1 | /* |
2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include <sys/socket.h> | |
25 | #include <sys/types.h> | |
26 | #include <netinet/in.h> | |
27 | #include <netdb.h> | |
28 | #include <stdio.h> | |
29 | #include <string.h> | |
30 | #include <stdlib.h> | |
31 | #include <unistd.h> | |
32 | #include <errno.h> | |
33 | #include <inttypes.h> | |
34 | #include <fcntl.h> | |
35 | #include <sys/mman.h> | |
36 | ||
0c445945 | 37 | #include "lttng-viewer-abi.h" |
b1acd2b3 | 38 | #include "network-live.h" |
3bac1a1f | 39 | #include "lttng-live-comm.h" |
b1acd2b3 JD |
40 | |
41 | #include <babeltrace/babeltrace.h> | |
42 | #include <babeltrace/ctf/events.h> | |
43 | #include <babeltrace/ctf/callbacks.h> | |
44 | #include <babeltrace/ctf/iterator.h> | |
45 | ||
46 | /* for packet_index */ | |
47 | #include <babeltrace/ctf/types.h> | |
48 | ||
49 | #include <babeltrace/ctf/metadata.h> | |
50 | #include <babeltrace/ctf-text/types.h> | |
51 | #include <babeltrace/ctf/events-internal.h> | |
12a91e9d | 52 | #include <lib/babeltrace/ctf/ctf-index.h> |
b1acd2b3 | 53 | |
6c5f6d07 JD |
54 | static volatile int should_quit; |
55 | ||
56 | int lttng_live_should_quit(void) | |
57 | { | |
58 | return should_quit; | |
59 | } | |
60 | ||
0d220223 | 61 | #if 0 |
6c5f6d07 JD |
62 | static |
63 | void sighandler(int sig) | |
64 | { | |
65 | switch (sig) { | |
66 | case SIGTERM: | |
67 | case SIGINT: | |
68 | should_quit = 1; | |
69 | break; | |
70 | default: | |
71 | break; | |
72 | } | |
73 | } | |
74 | ||
75 | /* | |
76 | * TODO: Eventually, this signal handler setup should be done at the | |
77 | * plugin manager level, rather than within this plugin. Beware, we are | |
78 | * not cleaning up the signal handler after plugin execution. | |
79 | */ | |
80 | static | |
81 | int setup_sighandler(void) | |
82 | { | |
83 | struct sigaction sa; | |
84 | sigset_t sigset; | |
85 | int ret; | |
86 | ||
87 | if ((ret = sigemptyset(&sigset)) < 0) { | |
88 | perror("sigemptyset"); | |
89 | return ret; | |
90 | } | |
91 | sa.sa_handler = sighandler; | |
92 | sa.sa_mask = sigset; | |
93 | sa.sa_flags = 0; | |
94 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { | |
95 | perror("sigaction"); | |
96 | return ret; | |
97 | } | |
98 | if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) { | |
99 | perror("sigaction"); | |
100 | return ret; | |
101 | } | |
102 | return 0; | |
103 | } | |
0d220223 JD |
104 | #endif |
105 | ||
b1acd2b3 | 106 | /* |
12a91e9d | 107 | * hostname parameter needs to hold NAME_MAX chars. |
b1acd2b3 | 108 | */ |
d81179de JD |
109 | static |
110 | int parse_url(const char *path, struct lttng_live_ctx *ctx) | |
b1acd2b3 | 111 | { |
d81179de | 112 | char remain[3][NAME_MAX]; |
12a91e9d | 113 | int ret = -1, proto, proto_offset = 0; |
6c5f6d07 | 114 | size_t path_len = strlen(path); /* not accounting \0 */ |
b1acd2b3 | 115 | |
12a91e9d JD |
116 | /* |
117 | * Since sscanf API does not allow easily checking string length | |
118 | * against a size defined by a macro. Test it beforehand on the | |
119 | * input. We know the output is always <= than the input length. | |
120 | */ | |
6c5f6d07 | 121 | if (path_len >= NAME_MAX) { |
b1acd2b3 JD |
122 | goto end; |
123 | } | |
12a91e9d JD |
124 | ret = sscanf(path, "net%d://", &proto); |
125 | if (ret < 1) { | |
126 | proto = 4; | |
127 | /* net:// */ | |
128 | proto_offset = strlen("net://"); | |
129 | } else { | |
130 | /* net4:// or net6:// */ | |
131 | proto_offset = strlen("netX://"); | |
b1acd2b3 | 132 | } |
12a91e9d | 133 | if (proto_offset > path_len) { |
b1acd2b3 JD |
134 | goto end; |
135 | } | |
12a91e9d JD |
136 | /* TODO : parse for IPv6 as well */ |
137 | /* Parse the hostname or IP */ | |
138 | ret = sscanf(&path[proto_offset], "%[a-zA-Z.0-9%-]%s", | |
d81179de | 139 | ctx->relay_hostname, remain[0]); |
12a91e9d JD |
140 | if (ret == 2) { |
141 | /* Optional port number */ | |
142 | switch (remain[0][0]) { | |
143 | case ':': | |
d81179de | 144 | ret = sscanf(remain[0], ":%d%s", &ctx->port, remain[1]); |
12a91e9d JD |
145 | /* Optional session ID with port number */ |
146 | if (ret == 2) { | |
d81179de | 147 | ret = sscanf(remain[1], "/%s", remain[2]); |
12a91e9d JD |
148 | /* Accept 0 or 1 (optional) */ |
149 | if (ret < 0) { | |
150 | goto end; | |
151 | } | |
6c5f6d07 JD |
152 | } else if (ret == 0) { |
153 | fprintf(stderr, "[error] Missing port number after delimitor ':'\n"); | |
154 | ret = -1; | |
155 | goto end; | |
12a91e9d JD |
156 | } |
157 | break; | |
158 | case '/': | |
159 | /* Optional session ID */ | |
d81179de | 160 | ret = sscanf(remain[0], "/%s", remain[2]); |
12a91e9d JD |
161 | /* Accept 0 or 1 (optional) */ |
162 | if (ret < 0) { | |
163 | goto end; | |
164 | } | |
165 | break; | |
166 | default: | |
167 | fprintf(stderr, "[error] wrong delimitor : %c\n", | |
168 | remain[0][0]); | |
169 | ret = -1; | |
170 | goto end; | |
171 | } | |
172 | } | |
b1acd2b3 | 173 | |
6c5f6d07 | 174 | if (ctx->port < 0) { |
d81179de | 175 | ctx->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
6c5f6d07 | 176 | } |
b1acd2b3 | 177 | |
d81179de | 178 | if (strlen(remain[2]) == 0) { |
12a91e9d JD |
179 | printf_verbose("Connecting to hostname : %s, port : %d, " |
180 | "proto : IPv%d\n", | |
d81179de JD |
181 | ctx->relay_hostname, ctx->port, proto); |
182 | ret = 0; | |
183 | goto end; | |
184 | } | |
185 | ret = sscanf(remain[2], "host/%[a-zA-Z.0-9%-]/%s", | |
186 | ctx->traced_hostname, ctx->session_name); | |
187 | if (ret != 2) { | |
188 | fprintf(stderr, "[error] Format : " | |
189 | "net://<hostname>/host/<traced_hostname>/<session_name>\n"); | |
190 | goto end; | |
191 | } | |
192 | ||
193 | printf_verbose("Connecting to hostname : %s, port : %d, " | |
194 | "traced hostname : %s, session name : %s, " | |
195 | "proto : IPv%d\n", | |
196 | ctx->relay_hostname, ctx->port, ctx->traced_hostname, | |
197 | ctx->session_name, proto); | |
b1acd2b3 JD |
198 | ret = 0; |
199 | ||
200 | end: | |
201 | return ret; | |
202 | } | |
203 | ||
12a91e9d | 204 | static int lttng_live_open_trace_read(const char *path) |
b1acd2b3 | 205 | { |
12a91e9d | 206 | int ret = 0; |
d81179de | 207 | struct lttng_live_ctx *ctx; |
b1acd2b3 | 208 | |
d81179de JD |
209 | ctx = g_new0(struct lttng_live_ctx, 1); |
210 | ctx->session = g_new0(struct lttng_live_session, 1); | |
b1acd2b3 | 211 | |
12a91e9d | 212 | /* We need a pointer to the context from the packet_seek function. */ |
d81179de | 213 | ctx->session->ctx = ctx; |
b1acd2b3 | 214 | |
12a91e9d | 215 | /* HT to store the CTF traces. */ |
d81179de | 216 | ctx->session->ctf_traces = g_hash_table_new(g_direct_hash, |
12a91e9d | 217 | g_direct_equal); |
d81179de JD |
218 | ctx->port = -1; |
219 | ctx->session_ids = g_array_new(FALSE, TRUE, sizeof(uint64_t)); | |
b1acd2b3 | 220 | |
d81179de | 221 | ret = parse_url(path, ctx); |
b1acd2b3 | 222 | if (ret < 0) { |
12a91e9d | 223 | goto end_free; |
b1acd2b3 | 224 | } |
6c5f6d07 JD |
225 | #if 0 |
226 | ret = setup_sighandler(); | |
227 | if (ret < 0) { | |
228 | goto end_free; | |
229 | } | |
230 | #endif | |
d81179de | 231 | ret = lttng_live_connect_viewer(ctx); |
b1acd2b3 | 232 | if (ret < 0) { |
12a91e9d | 233 | goto end_free; |
b1acd2b3 | 234 | } |
12a91e9d | 235 | printf_verbose("LTTng-live connected to relayd\n"); |
b1acd2b3 | 236 | |
d81179de | 237 | ret = lttng_live_establish_connection(ctx); |
b1acd2b3 | 238 | if (ret < 0) { |
12a91e9d | 239 | goto end_free; |
b1acd2b3 | 240 | } |
6c5f6d07 | 241 | |
d81179de JD |
242 | printf_verbose("Listing sessions\n"); |
243 | ret = lttng_live_list_sessions(ctx, path); | |
244 | if (ret < 0) { | |
d81179de | 245 | goto end_free; |
b1acd2b3 JD |
246 | } |
247 | ||
6c5f6d07 JD |
248 | if (ctx->session_ids->len > 0) { |
249 | ret = lttng_live_read(ctx); | |
250 | } | |
d81179de | 251 | |
12a91e9d | 252 | end_free: |
d81179de JD |
253 | g_hash_table_destroy(ctx->session->ctf_traces); |
254 | g_free(ctx->session); | |
255 | g_free(ctx->session->streams); | |
256 | g_free(ctx); | |
6c5f6d07 JD |
257 | |
258 | if (lttng_live_should_quit()) { | |
259 | ret = 0; | |
260 | } | |
b1acd2b3 JD |
261 | return ret; |
262 | } | |
263 | ||
b1acd2b3 | 264 | static |
12a91e9d JD |
265 | struct bt_trace_descriptor *lttng_live_open_trace(const char *path, int flags, |
266 | void (*packet_seek)(struct bt_stream_pos *pos, size_t index, | |
267 | int whence), FILE *metadata_fp) | |
b1acd2b3 | 268 | { |
12a91e9d | 269 | struct ctf_text_stream_pos *pos; |
b1acd2b3 | 270 | |
12a91e9d JD |
271 | switch (flags & O_ACCMODE) { |
272 | case O_RDONLY: | |
273 | /* OK */ | |
b1acd2b3 | 274 | break; |
12a91e9d JD |
275 | case O_RDWR: |
276 | fprintf(stderr, "[error] lttng live plugin cannot be used as output plugin.\n"); | |
277 | goto error; | |
b1acd2b3 | 278 | default: |
12a91e9d | 279 | fprintf(stderr, "[error] Incorrect open flags.\n"); |
b1acd2b3 JD |
280 | goto error; |
281 | } | |
282 | ||
12a91e9d JD |
283 | pos = g_new0(struct ctf_text_stream_pos, 1); |
284 | pos->parent.rw_table = NULL; | |
285 | pos->parent.event_cb = NULL; | |
286 | pos->parent.trace = &pos->trace_descriptor; | |
6c5f6d07 JD |
287 | if (lttng_live_open_trace_read(path) < 0) { |
288 | goto error; | |
289 | } | |
12a91e9d | 290 | return &pos->trace_descriptor; |
b1acd2b3 | 291 | |
b1acd2b3 | 292 | error: |
12a91e9d | 293 | return NULL; |
b1acd2b3 JD |
294 | } |
295 | ||
b1acd2b3 | 296 | static |
12a91e9d | 297 | int lttng_live_close_trace(struct bt_trace_descriptor *td) |
b1acd2b3 | 298 | { |
12a91e9d JD |
299 | struct ctf_text_stream_pos *pos = |
300 | container_of(td, struct ctf_text_stream_pos, | |
301 | trace_descriptor); | |
302 | free(pos); | |
303 | return 0; | |
b1acd2b3 JD |
304 | } |
305 | ||
12a91e9d JD |
306 | static |
307 | struct bt_format lttng_live_format = { | |
308 | .open_trace = lttng_live_open_trace, | |
309 | .close_trace = lttng_live_close_trace, | |
310 | }; | |
b1acd2b3 | 311 | |
12a91e9d JD |
312 | static |
313 | void __attribute__((constructor)) lttng_live_init(void) | |
b1acd2b3 | 314 | { |
b1acd2b3 JD |
315 | int ret; |
316 | ||
12a91e9d JD |
317 | lttng_live_format.name = g_quark_from_static_string("lttng-live"); |
318 | ret = bt_register_format(<tng_live_format); | |
319 | assert(!ret); | |
b1acd2b3 JD |
320 | } |
321 | ||
12a91e9d JD |
322 | static |
323 | void __attribute__((destructor)) lttng_live_exit(void) | |
b1acd2b3 | 324 | { |
12a91e9d | 325 | bt_unregister_format(<tng_live_format); |
b1acd2b3 | 326 | } |