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1 | /* | |
2 | * node.c TIPC node functionality. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Richard Alpe <richard.alpe@ericsson.com> | |
10 | */ | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
15 | #include <errno.h> | |
16 | ||
17 | #include <linux/tipc_netlink.h> | |
18 | #include <linux/tipc.h> | |
19 | #include <linux/genetlink.h> | |
20 | #include <libmnl/libmnl.h> | |
21 | ||
22 | #include "cmdl.h" | |
23 | #include "msg.h" | |
24 | #include "misc.h" | |
25 | #include "node.h" | |
26 | ||
27 | static int node_list_cb(const struct nlmsghdr *nlh, void *data) | |
28 | { | |
29 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; | |
30 | struct nlattr *attrs[TIPC_NLA_NODE_MAX + 1] = {}; | |
31 | char str[33] = {}; | |
32 | uint32_t addr; | |
33 | ||
34 | mnl_attr_parse(nlh, sizeof(struct genlmsghdr), parse_attrs, info); | |
35 | if (!info[TIPC_NLA_NODE]) | |
36 | return MNL_CB_ERROR; | |
37 | ||
38 | mnl_attr_parse_nested(info[TIPC_NLA_NODE], parse_attrs, attrs); | |
39 | if (!attrs[TIPC_NLA_NODE_ADDR]) | |
40 | return MNL_CB_ERROR; | |
41 | ||
42 | addr = mnl_attr_get_u32(attrs[TIPC_NLA_NODE_ADDR]); | |
43 | hash2nodestr(addr, str); | |
44 | printf("%-32s %08x ", str, addr); | |
45 | if (attrs[TIPC_NLA_NODE_UP]) | |
46 | printf("up\n"); | |
47 | else | |
48 | printf("down\n"); | |
49 | return MNL_CB_OK; | |
50 | } | |
51 | ||
52 | static int cmd_node_list(struct nlmsghdr *nlh, const struct cmd *cmd, | |
53 | struct cmdl *cmdl, void *data) | |
54 | { | |
55 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
56 | ||
57 | if (help_flag) { | |
58 | fprintf(stderr, "Usage: %s node list\n", cmdl->argv[0]); | |
59 | return -EINVAL; | |
60 | } | |
61 | ||
62 | if (!(nlh = msg_init(buf, TIPC_NL_NODE_GET))) { | |
63 | fprintf(stderr, "error, message initialisation failed\n"); | |
64 | return -1; | |
65 | } | |
66 | printf("Node Identity Hash State\n"); | |
67 | return msg_dumpit(nlh, node_list_cb, NULL); | |
68 | } | |
69 | ||
70 | static int cmd_node_set_addr(struct nlmsghdr *nlh, const struct cmd *cmd, | |
71 | struct cmdl *cmdl, void *data) | |
72 | { | |
73 | char *str; | |
74 | uint32_t addr; | |
75 | struct nlattr *nest; | |
76 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
77 | ||
78 | if (cmdl->argc != cmdl->optind + 1) { | |
79 | fprintf(stderr, "Usage: %s node set address ADDRESS\n", | |
80 | cmdl->argv[0]); | |
81 | return -EINVAL; | |
82 | } | |
83 | ||
84 | str = shift_cmdl(cmdl); | |
85 | addr = str2addr(str); | |
86 | if (!addr) | |
87 | return -1; | |
88 | ||
89 | if (!(nlh = msg_init(buf, TIPC_NL_NET_SET))) { | |
90 | fprintf(stderr, "error, message initialisation failed\n"); | |
91 | return -1; | |
92 | } | |
93 | ||
94 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET); | |
95 | mnl_attr_put_u32(nlh, TIPC_NLA_NET_ADDR, addr); | |
96 | mnl_attr_nest_end(nlh, nest); | |
97 | ||
98 | return msg_doit(nlh, NULL, NULL); | |
99 | } | |
100 | ||
101 | static int cmd_node_get_addr(struct nlmsghdr *nlh, const struct cmd *cmd, | |
102 | struct cmdl *cmdl, void *data) | |
103 | { | |
104 | int sk; | |
105 | socklen_t sz = sizeof(struct sockaddr_tipc); | |
106 | struct sockaddr_tipc addr; | |
107 | ||
108 | sk = socket(AF_TIPC, SOCK_RDM, 0); | |
109 | if (sk < 0) { | |
110 | fprintf(stderr, "opening TIPC socket: %s\n", strerror(errno)); | |
111 | return -1; | |
112 | } | |
113 | ||
114 | if (getsockname(sk, (struct sockaddr *)&addr, &sz) < 0) { | |
115 | fprintf(stderr, "getting TIPC socket address: %s\n", | |
116 | strerror(errno)); | |
117 | close(sk); | |
118 | return -1; | |
119 | } | |
120 | close(sk); | |
121 | ||
122 | printf("%08x\n", addr.addr.id.node); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | static int cmd_node_set_nodeid(struct nlmsghdr *nlh, const struct cmd *cmd, | |
127 | struct cmdl *cmdl, void *data) | |
128 | { | |
129 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
130 | uint8_t id[16] = {0,}; | |
131 | uint64_t *w0 = (uint64_t *) &id[0]; | |
132 | uint64_t *w1 = (uint64_t *) &id[8]; | |
133 | struct nlattr *nest; | |
134 | char *str; | |
135 | ||
136 | if (cmdl->argc != cmdl->optind + 1) { | |
137 | fprintf(stderr, "Usage: %s node set nodeid NODE_ID\n", | |
138 | cmdl->argv[0]); | |
139 | return -EINVAL; | |
140 | } | |
141 | ||
142 | str = shift_cmdl(cmdl); | |
143 | if (str2nodeid(str, id)) { | |
144 | fprintf(stderr, "Invalid node identity\n"); | |
145 | return -EINVAL; | |
146 | } | |
147 | ||
148 | nlh = msg_init(buf, TIPC_NL_NET_SET); | |
149 | if (!nlh) { | |
150 | fprintf(stderr, "error, message initialisation failed\n"); | |
151 | return -1; | |
152 | } | |
153 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET); | |
154 | mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID, *w0); | |
155 | mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID_W1, *w1); | |
156 | mnl_attr_nest_end(nlh, nest); | |
157 | return msg_doit(nlh, NULL, NULL); | |
158 | } | |
159 | ||
160 | static void cmd_node_set_key_help(struct cmdl *cmdl) | |
161 | { | |
162 | fprintf(stderr, | |
163 | "Usage: %s node set key KEY [algname ALGNAME] [PROPERTIES]\n" | |
164 | " %s node set key rekeying REKEYING\n\n" | |
165 | "KEY\n" | |
166 | " Symmetric KEY & SALT as a composite ASCII or hex string (0x...) in form:\n" | |
167 | " [KEY: 16, 24 or 32 octets][SALT: 4 octets]\n\n" | |
168 | "ALGNAME\n" | |
169 | " Cipher algorithm [default: \"gcm(aes)\"]\n\n" | |
170 | "PROPERTIES\n" | |
171 | " master - Set KEY as a cluster master key\n" | |
172 | " <empty> - Set KEY as a cluster key\n" | |
173 | " nodeid NODEID - Set KEY as a per-node key for own or peer\n\n" | |
174 | "REKEYING\n" | |
175 | " INTERVAL - Set rekeying interval (in minutes) [0: disable]\n" | |
176 | " now - Trigger one (first) rekeying immediately\n\n" | |
177 | "EXAMPLES\n" | |
178 | " %s node set key this_is_a_master_key master\n" | |
179 | " %s node set key 0x746869735F69735F615F6B657931365F73616C74\n" | |
180 | " %s node set key this_is_a_key16_salt algname \"gcm(aes)\" nodeid 1001002\n" | |
181 | " %s node set key rekeying 600\n\n", | |
182 | cmdl->argv[0], cmdl->argv[0], cmdl->argv[0], cmdl->argv[0], | |
183 | cmdl->argv[0], cmdl->argv[0]); | |
184 | } | |
185 | ||
186 | static int cmd_node_set_key(struct nlmsghdr *nlh, const struct cmd *cmd, | |
187 | struct cmdl *cmdl, void *data) | |
188 | { | |
189 | struct { | |
190 | union { | |
191 | struct tipc_aead_key key; | |
192 | char mem[TIPC_AEAD_KEY_SIZE_MAX]; | |
193 | }; | |
194 | } input = {}; | |
195 | struct opt opts[] = { | |
196 | { "algname", OPT_KEYVAL, NULL }, | |
197 | { "nodeid", OPT_KEYVAL, NULL }, | |
198 | { "master", OPT_KEY, NULL }, | |
199 | { "rekeying", OPT_KEYVAL, NULL }, | |
200 | { NULL } | |
201 | }; | |
202 | struct nlattr *nest; | |
203 | struct opt *opt_algname, *opt_nodeid, *opt_master, *opt_rekeying; | |
204 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
205 | uint8_t id[TIPC_NODEID_LEN] = {0,}; | |
206 | uint32_t rekeying = 0; | |
207 | bool has_key = false; | |
208 | int keysize; | |
209 | char *str; | |
210 | ||
211 | if (help_flag || cmdl->optind >= cmdl->argc) { | |
212 | (cmd->help)(cmdl); | |
213 | return -EINVAL; | |
214 | } | |
215 | ||
216 | /* Check if command starts with opts i.e. "rekeying" opt without key */ | |
217 | if (find_opt(opts, cmdl->argv[cmdl->optind])) | |
218 | goto get_ops; | |
219 | ||
220 | /* Get user key */ | |
221 | has_key = true; | |
222 | str = shift_cmdl(cmdl); | |
223 | if (str2key(str, &input.key)) { | |
224 | fprintf(stderr, "error, invalid key input\n"); | |
225 | return -EINVAL; | |
226 | } | |
227 | ||
228 | get_ops: | |
229 | if (parse_opts(opts, cmdl) < 0) | |
230 | return -EINVAL; | |
231 | ||
232 | /* Get rekeying time */ | |
233 | opt_rekeying = get_opt(opts, "rekeying"); | |
234 | if (opt_rekeying) { | |
235 | if (!strcmp(opt_rekeying->val, "now")) | |
236 | rekeying = TIPC_REKEYING_NOW; | |
237 | else | |
238 | rekeying = atoi(opt_rekeying->val); | |
239 | } | |
240 | ||
241 | /* Get algorithm name, default: "gcm(aes)" */ | |
242 | opt_algname = get_opt(opts, "algname"); | |
243 | if (!opt_algname) | |
244 | strcpy(input.key.alg_name, "gcm(aes)"); | |
245 | else | |
246 | strcpy(input.key.alg_name, opt_algname->val); | |
247 | ||
248 | /* Get node identity */ | |
249 | opt_nodeid = get_opt(opts, "nodeid"); | |
250 | if (opt_nodeid && str2nodeid(opt_nodeid->val, id)) { | |
251 | fprintf(stderr, "error, invalid node identity\n"); | |
252 | return -EINVAL; | |
253 | } | |
254 | ||
255 | /* Get master key indication */ | |
256 | opt_master = get_opt(opts, "master"); | |
257 | ||
258 | /* Sanity check if wrong option */ | |
259 | if (opt_nodeid && opt_master) { | |
260 | fprintf(stderr, "error, per-node key cannot be master\n"); | |
261 | return -EINVAL; | |
262 | } | |
263 | ||
264 | /* Init & do the command */ | |
265 | nlh = msg_init(buf, TIPC_NL_KEY_SET); | |
266 | if (!nlh) { | |
267 | fprintf(stderr, "error, message initialisation failed\n"); | |
268 | return -1; | |
269 | } | |
270 | ||
271 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_NODE); | |
272 | if (has_key) { | |
273 | keysize = tipc_aead_key_size(&input.key); | |
274 | mnl_attr_put(nlh, TIPC_NLA_NODE_KEY, keysize, &input.key); | |
275 | if (opt_nodeid) | |
276 | mnl_attr_put(nlh, TIPC_NLA_NODE_ID, TIPC_NODEID_LEN, id); | |
277 | if (opt_master) | |
278 | mnl_attr_put(nlh, TIPC_NLA_NODE_KEY_MASTER, 0, NULL); | |
279 | } | |
280 | if (opt_rekeying) | |
281 | mnl_attr_put_u32(nlh, TIPC_NLA_NODE_REKEYING, rekeying); | |
282 | ||
283 | mnl_attr_nest_end(nlh, nest); | |
284 | return msg_doit(nlh, NULL, NULL); | |
285 | } | |
286 | ||
287 | static int cmd_node_flush_key(struct nlmsghdr *nlh, const struct cmd *cmd, | |
288 | struct cmdl *cmdl, void *data) | |
289 | { | |
290 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
291 | ||
292 | if (help_flag) { | |
293 | (cmd->help)(cmdl); | |
294 | return -EINVAL; | |
295 | } | |
296 | ||
297 | /* Init & do the command */ | |
298 | nlh = msg_init(buf, TIPC_NL_KEY_FLUSH); | |
299 | if (!nlh) { | |
300 | fprintf(stderr, "error, message initialisation failed\n"); | |
301 | return -1; | |
302 | } | |
303 | return msg_doit(nlh, NULL, NULL); | |
304 | } | |
305 | ||
306 | static int nodeid_get_cb(const struct nlmsghdr *nlh, void *data) | |
307 | { | |
308 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; | |
309 | struct nlattr *attrs[TIPC_NLA_NET_MAX + 1] = {}; | |
310 | char str[33] = {0,}; | |
311 | uint8_t id[16] = {0,}; | |
312 | uint64_t *w0 = (uint64_t *) &id[0]; | |
313 | uint64_t *w1 = (uint64_t *) &id[8]; | |
314 | ||
315 | mnl_attr_parse(nlh, sizeof(struct genlmsghdr), parse_attrs, info); | |
316 | if (!info[TIPC_NLA_NET]) | |
317 | return MNL_CB_ERROR; | |
318 | ||
319 | mnl_attr_parse_nested(info[TIPC_NLA_NET], parse_attrs, attrs); | |
320 | if (!attrs[TIPC_NLA_NET_ID]) | |
321 | return MNL_CB_ERROR; | |
322 | ||
323 | *w0 = mnl_attr_get_u64(attrs[TIPC_NLA_NET_NODEID]); | |
324 | *w1 = mnl_attr_get_u64(attrs[TIPC_NLA_NET_NODEID_W1]); | |
325 | nodeid2str(id, str); | |
326 | printf("Node Identity Hash\n"); | |
327 | printf("%-33s", str); | |
328 | cmd_node_get_addr(NULL, NULL, NULL, NULL); | |
329 | return MNL_CB_OK; | |
330 | } | |
331 | ||
332 | static int cmd_node_get_nodeid(struct nlmsghdr *nlh, const struct cmd *cmd, | |
333 | struct cmdl *cmdl, void *data) | |
334 | { | |
335 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
336 | ||
337 | if (help_flag) { | |
338 | (cmd->help)(cmdl); | |
339 | return -EINVAL; | |
340 | } | |
341 | ||
342 | nlh = msg_init(buf, TIPC_NL_NET_GET); | |
343 | if (!nlh) { | |
344 | fprintf(stderr, "error, message initialisation failed\n"); | |
345 | return -1; | |
346 | } | |
347 | ||
348 | return msg_dumpit(nlh, nodeid_get_cb, NULL); | |
349 | } | |
350 | ||
351 | ||
352 | static int netid_get_cb(const struct nlmsghdr *nlh, void *data) | |
353 | { | |
354 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; | |
355 | struct nlattr *attrs[TIPC_NLA_NET_MAX + 1] = {}; | |
356 | ||
357 | mnl_attr_parse(nlh, sizeof(struct genlmsghdr), parse_attrs, info); | |
358 | if (!info[TIPC_NLA_NET]) | |
359 | return MNL_CB_ERROR; | |
360 | ||
361 | mnl_attr_parse_nested(info[TIPC_NLA_NET], parse_attrs, attrs); | |
362 | if (!attrs[TIPC_NLA_NET_ID]) | |
363 | return MNL_CB_ERROR; | |
364 | ||
365 | printf("%u\n", mnl_attr_get_u32(attrs[TIPC_NLA_NET_ID])); | |
366 | ||
367 | return MNL_CB_OK; | |
368 | } | |
369 | ||
370 | static int cmd_node_get_netid(struct nlmsghdr *nlh, const struct cmd *cmd, | |
371 | struct cmdl *cmdl, void *data) | |
372 | { | |
373 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
374 | ||
375 | if (help_flag) { | |
376 | (cmd->help)(cmdl); | |
377 | return -EINVAL; | |
378 | } | |
379 | ||
380 | if (!(nlh = msg_init(buf, TIPC_NL_NET_GET))) { | |
381 | fprintf(stderr, "error, message initialisation failed\n"); | |
382 | return -1; | |
383 | } | |
384 | ||
385 | return msg_dumpit(nlh, netid_get_cb, NULL); | |
386 | } | |
387 | ||
388 | static int cmd_node_set_netid(struct nlmsghdr *nlh, const struct cmd *cmd, | |
389 | struct cmdl *cmdl, void *data) | |
390 | { | |
391 | int netid; | |
392 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
393 | struct nlattr *nest; | |
394 | ||
395 | if (help_flag) { | |
396 | (cmd->help)(cmdl); | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
400 | if (!(nlh = msg_init(buf, TIPC_NL_NET_SET))) { | |
401 | fprintf(stderr, "error, message initialisation failed\n"); | |
402 | return -1; | |
403 | } | |
404 | ||
405 | if (cmdl->argc != cmdl->optind + 1) { | |
406 | fprintf(stderr, "Usage: %s node set netid NETID\n", | |
407 | cmdl->argv[0]); | |
408 | return -EINVAL; | |
409 | } | |
410 | netid = atoi(shift_cmdl(cmdl)); | |
411 | ||
412 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET); | |
413 | mnl_attr_put_u32(nlh, TIPC_NLA_NET_ID, netid); | |
414 | mnl_attr_nest_end(nlh, nest); | |
415 | ||
416 | return msg_doit(nlh, NULL, NULL); | |
417 | } | |
418 | ||
419 | static void cmd_node_flush_help(struct cmdl *cmdl) | |
420 | { | |
421 | fprintf(stderr, | |
422 | "Usage: %s node flush PROPERTY\n\n" | |
423 | "PROPERTIES\n" | |
424 | " key - Flush all symmetric-keys\n", | |
425 | cmdl->argv[0]); | |
426 | } | |
427 | ||
428 | static int cmd_node_flush(struct nlmsghdr *nlh, const struct cmd *cmd, | |
429 | struct cmdl *cmdl, void *data) | |
430 | { | |
431 | const struct cmd cmds[] = { | |
432 | { "key", cmd_node_flush_key, NULL }, | |
433 | { NULL } | |
434 | }; | |
435 | ||
436 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); | |
437 | } | |
438 | ||
439 | static void cmd_node_set_help(struct cmdl *cmdl) | |
440 | { | |
441 | fprintf(stderr, | |
442 | "Usage: %s node set PROPERTY\n\n" | |
443 | "PROPERTIES\n" | |
444 | " identity NODEID - Set node identity\n" | |
445 | " clusterid CLUSTERID - Set local cluster id\n" | |
446 | " key PROPERTY - Set symmetric-key\n", | |
447 | cmdl->argv[0]); | |
448 | } | |
449 | ||
450 | static int cmd_node_set(struct nlmsghdr *nlh, const struct cmd *cmd, | |
451 | struct cmdl *cmdl, void *data) | |
452 | { | |
453 | const struct cmd cmds[] = { | |
454 | { "address", cmd_node_set_addr, NULL }, | |
455 | { "identity", cmd_node_set_nodeid, NULL }, | |
456 | { "netid", cmd_node_set_netid, NULL }, | |
457 | { "clusterid", cmd_node_set_netid, NULL }, | |
458 | { "key", cmd_node_set_key, cmd_node_set_key_help }, | |
459 | { NULL } | |
460 | }; | |
461 | ||
462 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); | |
463 | } | |
464 | ||
465 | static void cmd_node_get_help(struct cmdl *cmdl) | |
466 | { | |
467 | fprintf(stderr, | |
468 | "Usage: %s node get PROPERTY\n\n" | |
469 | "PROPERTIES\n" | |
470 | " identity - Get node identity\n" | |
471 | " clusterid - Get local clusterid\n", | |
472 | cmdl->argv[0]); | |
473 | } | |
474 | ||
475 | static int cmd_node_get(struct nlmsghdr *nlh, const struct cmd *cmd, | |
476 | struct cmdl *cmdl, void *data) | |
477 | { | |
478 | const struct cmd cmds[] = { | |
479 | { "address", cmd_node_get_addr, NULL }, | |
480 | { "identity", cmd_node_get_nodeid, NULL }, | |
481 | { "netid", cmd_node_get_netid, NULL }, | |
482 | { "clusterid", cmd_node_get_netid, NULL }, | |
483 | { NULL } | |
484 | }; | |
485 | ||
486 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); | |
487 | } | |
488 | ||
489 | void cmd_node_help(struct cmdl *cmdl) | |
490 | { | |
491 | fprintf(stderr, | |
492 | "Usage: %s node COMMAND [ARGS] ...\n\n" | |
493 | "COMMANDS\n" | |
494 | " list - List remote nodes\n" | |
495 | " get - Get local node parameters\n" | |
496 | " set - Set local node parameters\n" | |
497 | " flush - Flush local node parameters\n", | |
498 | cmdl->argv[0]); | |
499 | } | |
500 | ||
501 | int cmd_node(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, | |
502 | void *data) | |
503 | { | |
504 | const struct cmd cmds[] = { | |
505 | { "list", cmd_node_list, NULL }, | |
506 | { "get", cmd_node_get, cmd_node_get_help }, | |
507 | { "set", cmd_node_set, cmd_node_set_help }, | |
508 | { "flush", cmd_node_flush, cmd_node_flush_help}, | |
509 | { NULL } | |
510 | }; | |
511 | ||
512 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); | |
513 | } |