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f2129093 | 1 | /* |
eadd1644 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc. |
f2129093 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "jsonrpc.h" | |
20 | ||
21 | #include <errno.h> | |
22 | #include <fcntl.h> | |
23 | #include <getopt.h> | |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | ||
27 | #include "command-line.h" | |
28 | #include "daemon.h" | |
29 | #include "json.h" | |
30 | #include "poll-loop.h" | |
9467fe62 | 31 | #include "stream-ssl.h" |
f2129093 BP |
32 | #include "stream.h" |
33 | #include "timeval.h" | |
34 | #include "util.h" | |
35 | #include "vlog.h" | |
eadd1644 | 36 | #include "ovstest.h" |
f2129093 | 37 | |
f2129093 BP |
38 | static void usage(void) NO_RETURN; |
39 | static void parse_options(int argc, char *argv[]); | |
d2586fce | 40 | static struct command *get_all_commands(void); |
f2129093 | 41 | |
eadd1644 AZ |
42 | static void |
43 | test_jsonrpc_main(int argc, char *argv[]) | |
f2129093 | 44 | { |
40f0707c | 45 | proctitle_init(argc, argv); |
f2129093 | 46 | set_program_name(argv[0]); |
dad530c1 | 47 | service_start(&argc, &argv); |
f2129093 | 48 | parse_options(argc, argv); |
d2586fce | 49 | run_command(argc - optind, argv + optind, get_all_commands()); |
f2129093 BP |
50 | } |
51 | ||
52 | static void | |
53 | parse_options(int argc, char *argv[]) | |
54 | { | |
9467fe62 | 55 | enum { |
8274ae95 BP |
56 | OPT_BOOTSTRAP_CA_CERT = UCHAR_MAX + 1, |
57 | DAEMON_OPTION_ENUMS | |
9467fe62 | 58 | }; |
07fc4ed3 | 59 | static const struct option long_options[] = { |
e3c17733 BP |
60 | {"verbose", optional_argument, NULL, 'v'}, |
61 | {"help", no_argument, NULL, 'h'}, | |
f2129093 | 62 | DAEMON_LONG_OPTIONS, |
e3c17733 | 63 | {"bootstrap-ca-cert", required_argument, NULL, OPT_BOOTSTRAP_CA_CERT}, |
bf8f2167 | 64 | STREAM_SSL_LONG_OPTIONS, |
e3c17733 | 65 | {NULL, 0, NULL, 0}, |
f2129093 BP |
66 | }; |
67 | char *short_options = long_options_to_short_options(long_options); | |
68 | ||
69 | for (;;) { | |
70 | int c = getopt_long(argc, argv, short_options, long_options, NULL); | |
71 | if (c == -1) { | |
72 | break; | |
73 | } | |
74 | ||
75 | switch (c) { | |
76 | case 'h': | |
77 | usage(); | |
78 | ||
79 | case 'v': | |
80 | vlog_set_verbosity(optarg); | |
81 | break; | |
82 | ||
83 | DAEMON_OPTION_HANDLERS | |
84 | ||
9467fe62 BP |
85 | STREAM_SSL_OPTION_HANDLERS |
86 | ||
87 | case OPT_BOOTSTRAP_CA_CERT: | |
88 | stream_ssl_set_ca_cert_file(optarg, true); | |
89 | break; | |
9467fe62 | 90 | |
f2129093 BP |
91 | case '?': |
92 | exit(EXIT_FAILURE); | |
93 | ||
94 | default: | |
95 | abort(); | |
96 | } | |
97 | } | |
98 | free(short_options); | |
99 | } | |
100 | ||
101 | static void | |
102 | usage(void) | |
103 | { | |
104 | printf("%s: JSON-RPC test utility\n" | |
105 | "usage: %s [OPTIONS] COMMAND [ARG...]\n" | |
106 | " listen LOCAL listen for connections on LOCAL\n" | |
107 | " request REMOTE METHOD PARAMS send request, print reply\n" | |
108 | " notify REMOTE METHOD PARAMS send notification and exit\n", | |
109 | program_name, program_name); | |
9467fe62 | 110 | stream_usage("JSON-RPC", true, true, true); |
f2129093 BP |
111 | daemon_usage(); |
112 | vlog_usage(); | |
113 | printf("\nOther options:\n" | |
114 | " -h, --help display this help message\n"); | |
115 | exit(EXIT_SUCCESS); | |
116 | } | |
117 | \f | |
118 | /* Command helper functions. */ | |
119 | ||
120 | static struct json * | |
121 | parse_json(const char *s) | |
122 | { | |
123 | struct json *json = json_from_string(s); | |
124 | if (json->type == JSON_STRING) { | |
125 | ovs_fatal(0, "\"%s\": %s", s, json->u.string); | |
126 | } | |
127 | return json; | |
128 | } | |
129 | ||
130 | static void | |
131 | print_and_free_json(struct json *json) | |
132 | { | |
133 | char *string = json_to_string(json, JSSF_SORT); | |
134 | json_destroy(json); | |
135 | puts(string); | |
136 | free(string); | |
137 | } | |
138 | \f | |
139 | /* Command implementations. */ | |
140 | ||
c1ce8fbf | 141 | static int |
f2129093 BP |
142 | handle_rpc(struct jsonrpc *rpc, struct jsonrpc_msg *msg, bool *done) |
143 | { | |
f2129093 | 144 | if (msg->type == JSONRPC_REQUEST) { |
c1ce8fbf | 145 | struct jsonrpc_msg *reply = NULL; |
f2129093 BP |
146 | if (!strcmp(msg->method, "echo")) { |
147 | reply = jsonrpc_create_reply(json_clone(msg->params), msg->id); | |
148 | } else { | |
149 | struct json *error = json_object_create(); | |
150 | json_object_put_string(error, "error", "unknown method"); | |
151 | reply = jsonrpc_create_error(error, msg->id); | |
152 | ovs_error(0, "unknown request %s", msg->method); | |
153 | } | |
c1ce8fbf BP |
154 | jsonrpc_send(rpc, reply); |
155 | return 0; | |
f2129093 BP |
156 | } else if (msg->type == JSONRPC_NOTIFY) { |
157 | if (!strcmp(msg->method, "shutdown")) { | |
158 | *done = true; | |
c1ce8fbf | 159 | return 0; |
f2129093 | 160 | } else { |
f2129093 | 161 | ovs_error(0, "unknown notification %s", msg->method); |
c1ce8fbf | 162 | return ENOTTY; |
f2129093 BP |
163 | } |
164 | } else { | |
f2129093 | 165 | ovs_error(0, "unsolicited JSON-RPC reply or error"); |
c1ce8fbf | 166 | return EPROTO; |
f2129093 BP |
167 | } |
168 | } | |
169 | ||
170 | static void | |
c69ee87c | 171 | do_listen(int argc OVS_UNUSED, char *argv[]) |
f2129093 BP |
172 | { |
173 | struct pstream *pstream; | |
174 | struct jsonrpc **rpcs; | |
175 | size_t n_rpcs, allocated_rpcs; | |
176 | bool done; | |
177 | int error; | |
178 | ||
f125905c | 179 | error = jsonrpc_pstream_open(argv[1], &pstream, DSCP_DEFAULT); |
f2129093 BP |
180 | if (error) { |
181 | ovs_fatal(error, "could not listen on \"%s\"", argv[1]); | |
182 | } | |
183 | ||
184 | daemonize(); | |
185 | ||
186 | rpcs = NULL; | |
187 | n_rpcs = allocated_rpcs = 0; | |
188 | done = false; | |
189 | for (;;) { | |
190 | struct stream *stream; | |
191 | size_t i; | |
192 | ||
193 | /* Accept new connections. */ | |
194 | error = pstream_accept(pstream, &stream); | |
195 | if (!error) { | |
196 | if (n_rpcs >= allocated_rpcs) { | |
197 | rpcs = x2nrealloc(rpcs, &allocated_rpcs, sizeof *rpcs); | |
198 | } | |
199 | rpcs[n_rpcs++] = jsonrpc_open(stream); | |
200 | } else if (error != EAGAIN) { | |
201 | ovs_fatal(error, "pstream_accept failed"); | |
202 | } | |
203 | ||
204 | /* Service existing connections. */ | |
205 | for (i = 0; i < n_rpcs; ) { | |
206 | struct jsonrpc *rpc = rpcs[i]; | |
207 | struct jsonrpc_msg *msg; | |
208 | ||
209 | jsonrpc_run(rpc); | |
210 | if (!jsonrpc_get_backlog(rpc)) { | |
211 | error = jsonrpc_recv(rpc, &msg); | |
212 | if (!error) { | |
c1ce8fbf | 213 | error = handle_rpc(rpc, msg, &done); |
f2129093 | 214 | jsonrpc_msg_destroy(msg); |
c1ce8fbf BP |
215 | } else if (error == EAGAIN) { |
216 | error = 0; | |
f2129093 BP |
217 | } |
218 | } | |
219 | ||
c1ce8fbf BP |
220 | if (!error) { |
221 | error = jsonrpc_get_status(rpc); | |
222 | } | |
f2129093 BP |
223 | if (error) { |
224 | jsonrpc_close(rpc); | |
225 | ovs_error(error, "connection closed"); | |
226 | memmove(&rpcs[i], &rpcs[i + 1], | |
227 | (n_rpcs - i - 1) * sizeof *rpcs); | |
228 | n_rpcs--; | |
229 | } else { | |
230 | i++; | |
231 | } | |
232 | } | |
233 | ||
234 | /* Wait for something to do. */ | |
235 | if (done && !n_rpcs) { | |
236 | break; | |
237 | } | |
238 | pstream_wait(pstream); | |
239 | for (i = 0; i < n_rpcs; i++) { | |
240 | struct jsonrpc *rpc = rpcs[i]; | |
241 | ||
242 | jsonrpc_wait(rpc); | |
243 | if (!jsonrpc_get_backlog(rpc)) { | |
244 | jsonrpc_recv_wait(rpc); | |
245 | } | |
246 | } | |
247 | poll_block(); | |
248 | } | |
93ff0290 BP |
249 | free(rpcs); |
250 | pstream_close(pstream); | |
f2129093 BP |
251 | } |
252 | ||
f2129093 | 253 | static void |
c69ee87c | 254 | do_request(int argc OVS_UNUSED, char *argv[]) |
f2129093 BP |
255 | { |
256 | struct jsonrpc_msg *msg; | |
257 | struct jsonrpc *rpc; | |
258 | struct json *params; | |
259 | struct stream *stream; | |
260 | const char *method; | |
261 | char *string; | |
262 | int error; | |
263 | ||
264 | method = argv[2]; | |
265 | params = parse_json(argv[3]); | |
20bed8be | 266 | msg = jsonrpc_create_request(method, params, NULL); |
f2129093 BP |
267 | string = jsonrpc_msg_is_valid(msg); |
268 | if (string) { | |
269 | ovs_fatal(0, "not a valid JSON-RPC request: %s", string); | |
270 | } | |
271 | ||
f125905c MM |
272 | error = stream_open_block(jsonrpc_stream_open(argv[1], &stream, |
273 | DSCP_DEFAULT), &stream); | |
f2129093 BP |
274 | if (error) { |
275 | ovs_fatal(error, "could not open \"%s\"", argv[1]); | |
276 | } | |
277 | rpc = jsonrpc_open(stream); | |
278 | ||
279 | error = jsonrpc_send(rpc, msg); | |
280 | if (error) { | |
281 | ovs_fatal(error, "could not send request"); | |
282 | } | |
283 | ||
284 | error = jsonrpc_recv_block(rpc, &msg); | |
285 | if (error) { | |
286 | ovs_fatal(error, "error waiting for reply"); | |
287 | } | |
288 | print_and_free_json(jsonrpc_msg_to_json(msg)); | |
289 | ||
290 | jsonrpc_close(rpc); | |
291 | } | |
292 | ||
293 | static void | |
c69ee87c | 294 | do_notify(int argc OVS_UNUSED, char *argv[]) |
f2129093 BP |
295 | { |
296 | struct jsonrpc_msg *msg; | |
297 | struct jsonrpc *rpc; | |
298 | struct json *params; | |
299 | struct stream *stream; | |
300 | const char *method; | |
301 | char *string; | |
302 | int error; | |
303 | ||
304 | method = argv[2]; | |
305 | params = parse_json(argv[3]); | |
306 | msg = jsonrpc_create_notify(method, params); | |
307 | string = jsonrpc_msg_is_valid(msg); | |
308 | if (string) { | |
309 | ovs_fatal(0, "not a JSON RPC-valid notification: %s", string); | |
310 | } | |
311 | ||
f125905c MM |
312 | error = stream_open_block(jsonrpc_stream_open(argv[1], &stream, |
313 | DSCP_DEFAULT), &stream); | |
f2129093 BP |
314 | if (error) { |
315 | ovs_fatal(error, "could not open \"%s\"", argv[1]); | |
316 | } | |
317 | rpc = jsonrpc_open(stream); | |
318 | ||
319 | error = jsonrpc_send_block(rpc, msg); | |
320 | if (error) { | |
99155935 | 321 | ovs_fatal(error, "could not send notification"); |
f2129093 BP |
322 | } |
323 | jsonrpc_close(rpc); | |
324 | } | |
325 | ||
326 | static void | |
c69ee87c | 327 | do_help(int argc OVS_UNUSED, char *argv[] OVS_UNUSED) |
f2129093 BP |
328 | { |
329 | usage(); | |
330 | } | |
331 | ||
332 | static struct command all_commands[] = { | |
333 | { "listen", 1, 1, do_listen }, | |
334 | { "request", 3, 3, do_request }, | |
335 | { "notify", 3, 3, do_notify }, | |
336 | { "help", 0, INT_MAX, do_help }, | |
337 | { NULL, 0, 0, NULL }, | |
338 | }; | |
eadd1644 | 339 | |
d2586fce GS |
340 | static struct command * |
341 | get_all_commands(void) | |
342 | { | |
343 | return all_commands; | |
344 | } | |
345 | ||
eadd1644 | 346 | OVSTEST_REGISTER("test-jsonrpc", test_jsonrpc_main); |