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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 JD |
53 | |
54 | /* | |
12a91e9d | 55 | * hostname parameter needs to hold NAME_MAX chars. |
b1acd2b3 | 56 | */ |
d81179de JD |
57 | static |
58 | int parse_url(const char *path, struct lttng_live_ctx *ctx) | |
b1acd2b3 | 59 | { |
d81179de | 60 | char remain[3][NAME_MAX]; |
12a91e9d JD |
61 | int ret = -1, proto, proto_offset = 0; |
62 | size_t path_len = strlen(path); | |
b1acd2b3 | 63 | |
12a91e9d JD |
64 | /* |
65 | * Since sscanf API does not allow easily checking string length | |
66 | * against a size defined by a macro. Test it beforehand on the | |
67 | * input. We know the output is always <= than the input length. | |
68 | */ | |
69 | if (path_len > NAME_MAX) { | |
b1acd2b3 JD |
70 | goto end; |
71 | } | |
12a91e9d JD |
72 | ret = sscanf(path, "net%d://", &proto); |
73 | if (ret < 1) { | |
74 | proto = 4; | |
75 | /* net:// */ | |
76 | proto_offset = strlen("net://"); | |
77 | } else { | |
78 | /* net4:// or net6:// */ | |
79 | proto_offset = strlen("netX://"); | |
b1acd2b3 | 80 | } |
12a91e9d | 81 | if (proto_offset > path_len) { |
b1acd2b3 JD |
82 | goto end; |
83 | } | |
12a91e9d JD |
84 | /* TODO : parse for IPv6 as well */ |
85 | /* Parse the hostname or IP */ | |
86 | ret = sscanf(&path[proto_offset], "%[a-zA-Z.0-9%-]%s", | |
d81179de | 87 | ctx->relay_hostname, remain[0]); |
12a91e9d JD |
88 | if (ret == 2) { |
89 | /* Optional port number */ | |
90 | switch (remain[0][0]) { | |
91 | case ':': | |
d81179de | 92 | ret = sscanf(remain[0], ":%d%s", &ctx->port, remain[1]); |
12a91e9d JD |
93 | /* Optional session ID with port number */ |
94 | if (ret == 2) { | |
d81179de | 95 | ret = sscanf(remain[1], "/%s", remain[2]); |
12a91e9d JD |
96 | /* Accept 0 or 1 (optional) */ |
97 | if (ret < 0) { | |
98 | goto end; | |
99 | } | |
100 | } | |
101 | break; | |
102 | case '/': | |
103 | /* Optional session ID */ | |
d81179de | 104 | ret = sscanf(remain[0], "/%s", remain[2]); |
12a91e9d JD |
105 | /* Accept 0 or 1 (optional) */ |
106 | if (ret < 0) { | |
107 | goto end; | |
108 | } | |
109 | break; | |
110 | default: | |
111 | fprintf(stderr, "[error] wrong delimitor : %c\n", | |
112 | remain[0][0]); | |
113 | ret = -1; | |
114 | goto end; | |
115 | } | |
116 | } | |
b1acd2b3 | 117 | |
d81179de JD |
118 | if (ctx->port < 0) |
119 | ctx->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; | |
b1acd2b3 | 120 | |
d81179de | 121 | if (strlen(remain[2]) == 0) { |
12a91e9d JD |
122 | printf_verbose("Connecting to hostname : %s, port : %d, " |
123 | "proto : IPv%d\n", | |
d81179de JD |
124 | ctx->relay_hostname, ctx->port, proto); |
125 | ret = 0; | |
126 | goto end; | |
127 | } | |
128 | ret = sscanf(remain[2], "host/%[a-zA-Z.0-9%-]/%s", | |
129 | ctx->traced_hostname, ctx->session_name); | |
130 | if (ret != 2) { | |
131 | fprintf(stderr, "[error] Format : " | |
132 | "net://<hostname>/host/<traced_hostname>/<session_name>\n"); | |
133 | goto end; | |
134 | } | |
135 | ||
136 | printf_verbose("Connecting to hostname : %s, port : %d, " | |
137 | "traced hostname : %s, session name : %s, " | |
138 | "proto : IPv%d\n", | |
139 | ctx->relay_hostname, ctx->port, ctx->traced_hostname, | |
140 | ctx->session_name, proto); | |
b1acd2b3 JD |
141 | ret = 0; |
142 | ||
143 | end: | |
144 | return ret; | |
145 | } | |
146 | ||
12a91e9d | 147 | static int lttng_live_open_trace_read(const char *path) |
b1acd2b3 | 148 | { |
12a91e9d | 149 | int ret = 0; |
d81179de | 150 | struct lttng_live_ctx *ctx; |
b1acd2b3 | 151 | |
d81179de JD |
152 | ctx = g_new0(struct lttng_live_ctx, 1); |
153 | ctx->session = g_new0(struct lttng_live_session, 1); | |
b1acd2b3 | 154 | |
12a91e9d | 155 | /* We need a pointer to the context from the packet_seek function. */ |
d81179de | 156 | ctx->session->ctx = ctx; |
b1acd2b3 | 157 | |
12a91e9d | 158 | /* HT to store the CTF traces. */ |
d81179de | 159 | ctx->session->ctf_traces = g_hash_table_new(g_direct_hash, |
12a91e9d | 160 | g_direct_equal); |
d81179de JD |
161 | ctx->port = -1; |
162 | ctx->session_ids = g_array_new(FALSE, TRUE, sizeof(uint64_t)); | |
b1acd2b3 | 163 | |
d81179de | 164 | ret = parse_url(path, ctx); |
b1acd2b3 | 165 | if (ret < 0) { |
12a91e9d | 166 | goto end_free; |
b1acd2b3 | 167 | } |
b1acd2b3 | 168 | |
d81179de | 169 | ret = lttng_live_connect_viewer(ctx); |
b1acd2b3 | 170 | if (ret < 0) { |
12a91e9d JD |
171 | fprintf(stderr, "[error] Connection failed\n"); |
172 | goto end_free; | |
b1acd2b3 | 173 | } |
12a91e9d | 174 | printf_verbose("LTTng-live connected to relayd\n"); |
b1acd2b3 | 175 | |
d81179de | 176 | ret = lttng_live_establish_connection(ctx); |
b1acd2b3 | 177 | if (ret < 0) { |
12a91e9d | 178 | goto end_free; |
b1acd2b3 | 179 | } |
d81179de JD |
180 | printf_verbose("Listing sessions\n"); |
181 | ret = lttng_live_list_sessions(ctx, path); | |
182 | if (ret < 0) { | |
183 | fprintf(stderr, "[error] List error\n"); | |
184 | goto end_free; | |
b1acd2b3 JD |
185 | } |
186 | ||
d81179de JD |
187 | if (ctx->session_ids->len > 0) |
188 | lttng_live_read(ctx); | |
189 | ||
12a91e9d | 190 | end_free: |
d81179de JD |
191 | g_hash_table_destroy(ctx->session->ctf_traces); |
192 | g_free(ctx->session); | |
193 | g_free(ctx->session->streams); | |
194 | g_free(ctx); | |
b1acd2b3 JD |
195 | return ret; |
196 | } | |
197 | ||
b1acd2b3 | 198 | static |
12a91e9d JD |
199 | struct bt_trace_descriptor *lttng_live_open_trace(const char *path, int flags, |
200 | void (*packet_seek)(struct bt_stream_pos *pos, size_t index, | |
201 | int whence), FILE *metadata_fp) | |
b1acd2b3 | 202 | { |
12a91e9d | 203 | struct ctf_text_stream_pos *pos; |
b1acd2b3 | 204 | |
12a91e9d JD |
205 | switch (flags & O_ACCMODE) { |
206 | case O_RDONLY: | |
207 | /* OK */ | |
b1acd2b3 | 208 | break; |
12a91e9d JD |
209 | case O_RDWR: |
210 | fprintf(stderr, "[error] lttng live plugin cannot be used as output plugin.\n"); | |
211 | goto error; | |
b1acd2b3 | 212 | default: |
12a91e9d | 213 | fprintf(stderr, "[error] Incorrect open flags.\n"); |
b1acd2b3 JD |
214 | goto error; |
215 | } | |
216 | ||
12a91e9d JD |
217 | pos = g_new0(struct ctf_text_stream_pos, 1); |
218 | pos->parent.rw_table = NULL; | |
219 | pos->parent.event_cb = NULL; | |
220 | pos->parent.trace = &pos->trace_descriptor; | |
221 | lttng_live_open_trace_read(path); | |
222 | return &pos->trace_descriptor; | |
b1acd2b3 | 223 | |
b1acd2b3 | 224 | error: |
12a91e9d | 225 | return NULL; |
b1acd2b3 JD |
226 | } |
227 | ||
b1acd2b3 | 228 | static |
12a91e9d | 229 | int lttng_live_close_trace(struct bt_trace_descriptor *td) |
b1acd2b3 | 230 | { |
12a91e9d JD |
231 | struct ctf_text_stream_pos *pos = |
232 | container_of(td, struct ctf_text_stream_pos, | |
233 | trace_descriptor); | |
234 | free(pos); | |
235 | return 0; | |
b1acd2b3 JD |
236 | } |
237 | ||
12a91e9d JD |
238 | static |
239 | struct bt_format lttng_live_format = { | |
240 | .open_trace = lttng_live_open_trace, | |
241 | .close_trace = lttng_live_close_trace, | |
242 | }; | |
b1acd2b3 | 243 | |
12a91e9d JD |
244 | static |
245 | void __attribute__((constructor)) lttng_live_init(void) | |
b1acd2b3 | 246 | { |
b1acd2b3 JD |
247 | int ret; |
248 | ||
12a91e9d JD |
249 | lttng_live_format.name = g_quark_from_static_string("lttng-live"); |
250 | ret = bt_register_format(<tng_live_format); | |
251 | assert(!ret); | |
b1acd2b3 JD |
252 | } |
253 | ||
12a91e9d JD |
254 | static |
255 | void __attribute__((destructor)) lttng_live_exit(void) | |
b1acd2b3 | 256 | { |
12a91e9d | 257 | bt_unregister_format(<tng_live_format); |
b1acd2b3 | 258 | } |