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db4aac35403628b9ca10ef80eca574472e1e473b
[project/rpcd.git] / luci2.c
1 /*
2 * luci-rpcd - LuCI UBUS RPC server
3 *
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <fcntl.h>
20 #include <errno.h>
21 #include <unistd.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <ctype.h>
25 #include <sys/wait.h>
26 #include <sys/stat.h>
27 #include <sys/types.h>
28 #include <dirent.h>
29 #include <arpa/inet.h>
30 #include <signal.h>
31
32 #include "luci2.h"
33
34 static struct blob_buf buf;
35 static struct uci_context *cursor;
36
37 enum {
38 RPC_S_PID,
39 RPC_S_SIGNAL,
40 __RPC_S_MAX,
41 };
42
43 static const struct blobmsg_policy rpc_signal_policy[__RPC_S_MAX] = {
44 [RPC_S_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
45 [RPC_S_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
46 };
47
48 enum {
49 RPC_I_NAME,
50 RPC_I_ACTION,
51 __RPC_I_MAX,
52 };
53
54 static const struct blobmsg_policy rpc_init_policy[__RPC_I_MAX] = {
55 [RPC_I_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
56 [RPC_I_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_STRING },
57 };
58
59 enum {
60 RPC_K_KEYS,
61 __RPC_K_MAX
62 };
63
64 static const struct blobmsg_policy rpc_sshkey_policy[__RPC_K_MAX] = {
65 [RPC_K_KEYS] = { .name = "keys", .type = BLOBMSG_TYPE_ARRAY },
66 };
67
68 enum {
69 RPC_P_USER,
70 RPC_P_PASSWORD,
71 __RPC_P_MAX
72 };
73
74 static const struct blobmsg_policy rpc_password_policy[__RPC_P_MAX] = {
75 [RPC_P_USER] = { .name = "user", .type = BLOBMSG_TYPE_STRING },
76 [RPC_P_PASSWORD] = { .name = "password", .type = BLOBMSG_TYPE_STRING },
77 };
78
79
80 static int
81 rpc_errno_status(void)
82 {
83 switch (errno)
84 {
85 case EACCES:
86 return UBUS_STATUS_PERMISSION_DENIED;
87
88 case ENOTDIR:
89 return UBUS_STATUS_INVALID_ARGUMENT;
90
91 case ENOENT:
92 return UBUS_STATUS_NOT_FOUND;
93
94 case EINVAL:
95 return UBUS_STATUS_INVALID_ARGUMENT;
96
97 default:
98 return UBUS_STATUS_UNKNOWN_ERROR;
99 }
100 }
101
102 static void
103 log_read(FILE *log, int logsize)
104 {
105 int len;
106 char *logbuf;
107
108 if (logsize == 0)
109 logsize = RPC_LUCI2_DEF_LOGSIZE;
110
111 len = (logsize > RPC_LUCI2_MAX_LOGSIZE) ? RPC_LUCI2_MAX_LOGSIZE : logsize;
112 logbuf = blobmsg_alloc_string_buffer(&buf, "log", len + 1);
113
114 if (!logbuf)
115 return;
116
117 while (logsize > RPC_LUCI2_MAX_LOGSIZE)
118 {
119 len = logsize % RPC_LUCI2_MAX_LOGSIZE;
120
121 if (len == 0)
122 len = RPC_LUCI2_MAX_LOGSIZE;
123
124 fread(logbuf, 1, len, log);
125 logsize -= len;
126 }
127
128 len = fread(logbuf, 1, logsize, log);
129 *(logbuf + len) = 0;
130
131 blobmsg_add_string_buffer(&buf);
132 }
133
134 static int
135 rpc_luci2_system_log(struct ubus_context *ctx, struct ubus_object *obj,
136 struct ubus_request_data *req, const char *method,
137 struct blob_attr *msg)
138 {
139 FILE *log;
140 int logsize = 0;
141 const char *logfile = NULL;
142 struct stat st;
143 struct uci_package *p;
144 struct uci_element *e;
145 struct uci_section *s;
146 struct uci_ptr ptr = { .package = "system" };
147
148 uci_load(cursor, ptr.package, &p);
149
150 if (!p)
151 return UBUS_STATUS_NOT_FOUND;
152
153 uci_foreach_element(&p->sections, e)
154 {
155 s = uci_to_section(e);
156
157 if (strcmp(s->type, "system"))
158 continue;
159
160 ptr.o = NULL;
161 ptr.option = "log_type";
162 ptr.section = e->name;
163 uci_lookup_ptr(cursor, &ptr, NULL, true);
164 break;
165 }
166
167 if (ptr.o && ptr.o->type == UCI_TYPE_STRING &&
168 !strcmp(ptr.o->v.string, "file"))
169 {
170 ptr.o = NULL;
171 ptr.option = "log_file";
172 uci_lookup_ptr(cursor, &ptr, NULL, true);
173
174 if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
175 logfile = ptr.o->v.string;
176 else
177 logfile = "/var/log/messages";
178
179 if (stat(logfile, &st) || !(log = fopen(logfile, "r")))
180 goto fail;
181
182 logsize = st.st_size;
183 }
184 else
185 {
186 ptr.o = NULL;
187 ptr.option = "log_size";
188 uci_lookup_ptr(cursor, &ptr, NULL, true);
189
190 if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
191 logsize = atoi(ptr.o->v.string) * 1024;
192
193 if (!(log = popen("logread", "r")))
194 goto fail;
195 }
196
197 blob_buf_init(&buf, 0);
198
199 log_read(log, logsize);
200 fclose(log);
201
202 uci_unload(cursor, p);
203 ubus_send_reply(ctx, req, buf.head);
204 return 0;
205
206 fail:
207 uci_unload(cursor, p);
208 return rpc_errno_status();
209 }
210
211 static int
212 rpc_luci2_system_dmesg(struct ubus_context *ctx, struct ubus_object *obj,
213 struct ubus_request_data *req, const char *method,
214 struct blob_attr *msg)
215 {
216 FILE *log;
217
218 if (!(log = popen("dmesg", "r")))
219 return rpc_errno_status();
220
221 blob_buf_init(&buf, 0);
222
223 log_read(log, RPC_LUCI2_MAX_LOGSIZE);
224 fclose(log);
225
226 ubus_send_reply(ctx, req, buf.head);
227 return 0;
228 }
229
230 static int
231 rpc_luci2_process_list(struct ubus_context *ctx, struct ubus_object *obj,
232 struct ubus_request_data *req, const char *method,
233 struct blob_attr *msg)
234 {
235 FILE *top;
236 void *c, *d;
237 char line[1024];
238 char *pid, *ppid, *user, *stat, *vsz, *pvsz, *pcpu, *cmd;
239
240 if (!(top = popen("/bin/busybox top -bn1", "r")))
241 return rpc_errno_status();
242
243 blob_buf_init(&buf, 0);
244 c = blobmsg_open_array(&buf, "processes");
245
246 while (fgets(line, sizeof(line) - 1, top))
247 {
248 pid = strtok(line, " ");
249
250 if (*pid < '0' || *pid > '9')
251 continue;
252
253 ppid = strtok(NULL, " ");
254 user = strtok(NULL, " ");
255 stat = strtok(NULL, " ");
256
257 if (!stat)
258 continue;
259
260 if (!*(stat + 1))
261 *(stat + 1) = ' ';
262
263 if (!*(stat + 2))
264 *(stat + 2) = ' ';
265
266 *(stat + 3) = 0;
267
268 vsz = strtok(stat + 4, " ");
269 pvsz = strtok(NULL, " ");
270 pcpu = strtok(NULL, " ");
271 cmd = strtok(NULL, "\n");
272
273 if (!cmd)
274 continue;
275
276 d = blobmsg_open_table(&buf, NULL);
277
278 blobmsg_add_u32(&buf, "pid", atoi(pid));
279 blobmsg_add_u32(&buf, "ppid", atoi(ppid));
280 blobmsg_add_string(&buf, "user", user);
281 blobmsg_add_string(&buf, "stat", stat);
282 blobmsg_add_u32(&buf, "vsize", atoi(vsz) * 1024);
283 blobmsg_add_u32(&buf, "vsize_percent", atoi(pvsz));
284 blobmsg_add_u32(&buf, "cpu_percent", atoi(pcpu));
285 blobmsg_add_string(&buf, "command", cmd);
286
287 blobmsg_close_table(&buf, d);
288 }
289
290 fclose(top);
291 blobmsg_close_array(&buf, c);
292
293 ubus_send_reply(ctx, req, buf.head);
294 return 0;
295 }
296
297 static int
298 rpc_luci2_process_signal(struct ubus_context *ctx, struct ubus_object *obj,
299 struct ubus_request_data *req, const char *method,
300 struct blob_attr *msg)
301 {
302 int pid, sig;
303 struct blob_attr *tb[__RPC_S_MAX];
304
305 blobmsg_parse(rpc_signal_policy, __RPC_S_MAX, tb,
306 blob_data(msg), blob_len(msg));
307
308 if (!tb[RPC_S_SIGNAL] || !tb[RPC_S_PID])
309 {
310 errno = EINVAL;
311 return rpc_errno_status();
312 }
313
314 pid = blobmsg_get_u32(tb[RPC_S_PID]);
315 sig = blobmsg_get_u32(tb[RPC_S_SIGNAL]);
316
317 if (kill(pid, sig))
318 return rpc_errno_status();
319
320 return 0;
321 }
322
323 static int
324 rpc_luci2_init_list(struct ubus_context *ctx, struct ubus_object *obj,
325 struct ubus_request_data *req, const char *method,
326 struct blob_attr *msg)
327 {
328 int n;
329 void *c, *t;
330 char *p, path[PATH_MAX];
331 struct stat s;
332 struct dirent *e;
333 FILE *f;
334 DIR *d;
335
336 if (!(d = opendir("/etc/init.d")))
337 return rpc_errno_status();
338
339 blob_buf_init(&buf, 0);
340 c = blobmsg_open_array(&buf, "initscripts");
341
342 while ((e = readdir(d)) != NULL)
343 {
344 snprintf(path, sizeof(path) - 1, "/etc/init.d/%s", e->d_name);
345
346 if (stat(path, &s) || !S_ISREG(s.st_mode) || !(s.st_mode & S_IXUSR))
347 continue;
348
349 if ((f = fopen(path, "r")) != NULL)
350 {
351 n = -1;
352 p = fgets(path, sizeof(path) - 1, f);
353
354 if (!p || !strstr(p, "/etc/rc.common"))
355 goto skip;
356
357 t = blobmsg_open_table(&buf, NULL);
358
359 blobmsg_add_string(&buf, "name", e->d_name);
360
361 while (fgets(path, sizeof(path) - 1, f))
362 {
363 p = strtok(path, "= \t");
364
365 if (!strcmp(p, "START") && !!(p = strtok(NULL, "= \t\n")))
366 {
367 n = atoi(p);
368 blobmsg_add_u32(&buf, "start", n);
369 }
370 else if (!strcmp(p, "STOP") && !!(p = strtok(NULL, "= \t\n")))
371 {
372 blobmsg_add_u32(&buf, "stop", atoi(p));
373 break;
374 }
375 }
376
377 if (n > -1)
378 {
379 snprintf(path, sizeof(path) - 1, "/etc/rc.d/S%02d%s",
380 n, e->d_name);
381
382 blobmsg_add_u8(&buf, "enabled",
383 (!stat(path, &s) && (s.st_mode & S_IXUSR)));
384 }
385 else
386 {
387 blobmsg_add_u8(&buf, "enabled", 0);
388 }
389
390 blobmsg_close_table(&buf, t);
391
392 skip:
393 fclose(f);
394 }
395 }
396
397 closedir(d);
398 blobmsg_close_array(&buf, c);
399
400 ubus_send_reply(ctx, req, buf.head);
401 return 0;
402 }
403
404 static int
405 rpc_luci2_init_action(struct ubus_context *ctx, struct ubus_object *obj,
406 struct ubus_request_data *req, const char *method,
407 struct blob_attr *msg)
408 {
409 int fd;
410 pid_t pid;
411 struct stat s;
412 char path[PATH_MAX];
413 const char *action;
414 struct blob_attr *tb[__RPC_I_MAX];
415
416 blobmsg_parse(rpc_init_policy, __RPC_I_MAX, tb,
417 blob_data(msg), blob_len(msg));
418
419 if (!tb[RPC_I_NAME] || !tb[RPC_I_ACTION])
420 return UBUS_STATUS_INVALID_ARGUMENT;
421
422 action = blobmsg_data(tb[RPC_I_ACTION]);
423
424 if (strcmp(action, "start") && strcmp(action, "stop") &&
425 strcmp(action, "reload") && strcmp(action, "restart") &&
426 strcmp(action, "enable") && strcmp(action, "disable"))
427 return UBUS_STATUS_INVALID_ARGUMENT;
428
429 snprintf(path, sizeof(path) - 1, "/etc/init.d/%s",
430 (char *)blobmsg_data(tb[RPC_I_NAME]));
431
432 if (stat(path, &s))
433 return rpc_errno_status();
434
435 if (!(s.st_mode & S_IXUSR))
436 return UBUS_STATUS_PERMISSION_DENIED;
437
438 switch ((pid = fork()))
439 {
440 case -1:
441 return rpc_errno_status();
442
443 case 0:
444 uloop_done();
445
446 if ((fd = open("/dev/null", O_RDWR)) > -1)
447 {
448 dup2(fd, 0);
449 dup2(fd, 1);
450 dup2(fd, 2);
451
452 close(fd);
453 }
454
455 chdir("/");
456
457 if (execl(path, path, action, NULL))
458 return rpc_errno_status();
459
460 default:
461 return 0;
462 }
463 }
464
465 static int
466 rpc_luci2_sshkeys_get(struct ubus_context *ctx, struct ubus_object *obj,
467 struct ubus_request_data *req, const char *method,
468 struct blob_attr *msg)
469 {
470 FILE *f;
471 void *c;
472 char *p, line[4096];
473
474 if (!(f = fopen("/etc/dropbear/authorized_keys", "r")))
475 return rpc_errno_status();
476
477 blob_buf_init(&buf, 0);
478 c = blobmsg_open_array(&buf, "keys");
479
480 while (fgets(line, sizeof(line) - 1, f))
481 {
482 for (p = line + strlen(line) - 1; (p > line) && isspace(*p); p--)
483 *p = 0;
484
485 for (p = line; isspace(*p); p++)
486 *p = 0;
487
488 if (*p)
489 blobmsg_add_string(&buf, NULL, p);
490 }
491
492 blobmsg_close_array(&buf, c);
493 fclose(f);
494
495 ubus_send_reply(ctx, req, buf.head);
496 return 0;
497 }
498
499 static int
500 rpc_luci2_sshkeys_set(struct ubus_context *ctx, struct ubus_object *obj,
501 struct ubus_request_data *req, const char *method,
502 struct blob_attr *msg)
503 {
504 FILE *f;
505 int rem;
506 struct blob_attr *cur, *tb[__RPC_K_MAX];
507
508 blobmsg_parse(rpc_sshkey_policy, __RPC_K_MAX, tb,
509 blob_data(msg), blob_len(msg));
510
511 if (!tb[RPC_K_KEYS])
512 return UBUS_STATUS_INVALID_ARGUMENT;
513
514 if (!(f = fopen("/etc/dropbear/authorized_keys", "w")))
515 return rpc_errno_status();
516
517 blobmsg_for_each_attr(cur, tb[RPC_K_KEYS], rem)
518 {
519 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
520 continue;
521
522 fwrite(blobmsg_data(cur), blobmsg_data_len(cur) - 1, 1, f);
523 fwrite("\n", 1, 1, f);
524 }
525
526 fclose(f);
527 return 0;
528 }
529
530 static int
531 rpc_luci2_password_set(struct ubus_context *ctx, struct ubus_object *obj,
532 struct ubus_request_data *req, const char *method,
533 struct blob_attr *msg)
534 {
535 pid_t pid;
536 int fd, fds[2];
537 struct stat s;
538 struct blob_attr *tb[__RPC_P_MAX];
539
540 blobmsg_parse(rpc_password_policy, __RPC_P_MAX, tb,
541 blob_data(msg), blob_len(msg));
542
543 if (!tb[RPC_P_USER] || !tb[RPC_P_PASSWORD])
544 return UBUS_STATUS_INVALID_ARGUMENT;
545
546 if (stat("/usr/bin/passwd", &s))
547 return UBUS_STATUS_NOT_FOUND;
548
549 if (!(s.st_mode & S_IXUSR))
550 return UBUS_STATUS_PERMISSION_DENIED;
551
552 if (pipe(fds))
553 return rpc_errno_status();
554
555 switch ((pid = fork()))
556 {
557 case -1:
558 close(fds[0]);
559 close(fds[1]);
560 return rpc_errno_status();
561
562 case 0:
563 uloop_done();
564
565 dup2(fds[0], 0);
566 close(fds[0]);
567 close(fds[1]);
568
569 if ((fd = open("/dev/null", O_RDWR)) > -1)
570 {
571 dup2(fd, 1);
572 dup2(fd, 2);
573 close(fd);
574 }
575
576 chdir("/");
577
578 if (execl("/usr/bin/passwd", "/usr/bin/passwd",
579 blobmsg_data(tb[RPC_P_USER]), NULL))
580 return rpc_errno_status();
581
582 default:
583 close(fds[0]);
584
585 write(fds[1], blobmsg_data(tb[RPC_P_PASSWORD]),
586 blobmsg_data_len(tb[RPC_P_PASSWORD]) - 1);
587 write(fds[1], "\n", 1);
588
589 usleep(100 * 1000);
590
591 write(fds[1], blobmsg_data(tb[RPC_P_PASSWORD]),
592 blobmsg_data_len(tb[RPC_P_PASSWORD]) - 1);
593 write(fds[1], "\n", 1);
594
595 close(fds[1]);
596
597 waitpid(pid, NULL, 0);
598
599 return 0;
600 }
601 }
602
603
604 static FILE *
605 dnsmasq_leasefile(void)
606 {
607 FILE *leases = NULL;
608 struct uci_package *p;
609 struct uci_element *e;
610 struct uci_section *s;
611 struct uci_ptr ptr = {
612 .package = "dhcp",
613 .section = NULL,
614 .option = "leasefile"
615 };
616
617 uci_load(cursor, ptr.package, &p);
618
619 if (!p)
620 return NULL;
621
622 uci_foreach_element(&p->sections, e)
623 {
624 s = uci_to_section(e);
625
626 if (strcmp(s->type, "dnsmasq"))
627 continue;
628
629 ptr.section = e->name;
630 uci_lookup_ptr(cursor, &ptr, NULL, true);
631 break;
632 }
633
634 if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
635 leases = fopen(ptr.o->v.string, "r");
636
637 uci_unload(cursor, p);
638
639 return leases;
640 }
641
642 static int
643 rpc_luci2_network_leases(struct ubus_context *ctx, struct ubus_object *obj,
644 struct ubus_request_data *req, const char *method,
645 struct blob_attr *msg)
646 {
647 FILE *leases;
648 void *c, *d;
649 char line[128];
650 char *ts, *mac, *addr, *name;
651 time_t now = time(NULL);
652
653 blob_buf_init(&buf, 0);
654 c = blobmsg_open_array(&buf, "leases");
655
656 leases = dnsmasq_leasefile();
657
658 if (!leases)
659 goto out;
660
661 while (fgets(line, sizeof(line) - 1, leases))
662 {
663 ts = strtok(line, " \t");
664 mac = strtok(NULL, " \t");
665 addr = strtok(NULL, " \t");
666 name = strtok(NULL, " \t");
667
668 if (!ts || !mac || !addr || !name)
669 continue;
670
671 if (strchr(addr, ':'))
672 continue;
673
674 d = blobmsg_open_table(&buf, NULL);
675
676 blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
677 blobmsg_add_string(&buf, "macaddr", mac);
678 blobmsg_add_string(&buf, "ipaddr", addr);
679
680 if (strcmp(name, "*"))
681 blobmsg_add_string(&buf, "hostname", name);
682
683 blobmsg_close_table(&buf, d);
684 }
685
686 fclose(leases);
687
688 out:
689 blobmsg_close_array(&buf, c);
690 ubus_send_reply(ctx, req, buf.head);
691
692 return 0;
693 }
694
695 static int
696 rpc_luci2_network_leases6(struct ubus_context *ctx, struct ubus_object *obj,
697 struct ubus_request_data *req, const char *method,
698 struct blob_attr *msg)
699 {
700 FILE *leases;
701 void *c, *d;
702 char line[128];
703 char *ts, *mac, *addr, *name, *duid;
704 time_t now = time(NULL);
705
706 blob_buf_init(&buf, 0);
707 c = blobmsg_open_array(&buf, "leases");
708
709 leases = fopen("/tmp/hosts/6relayd", "r");
710
711 if (leases)
712 {
713 while (fgets(line, sizeof(line) - 1, leases))
714 {
715 if (strncmp(line, "# ", 2))
716 continue;
717
718 strtok(line + 2, " \t"); /* iface */
719
720 duid = strtok(NULL, " \t");
721
722 strtok(NULL, " \t"); /* iaid */
723
724 name = strtok(NULL, " \t");
725 ts = strtok(NULL, " \t");
726
727 strtok(NULL, " \t"); /* id */
728 strtok(NULL, " \t"); /* length */
729
730 addr = strtok(NULL, " \t\n");
731
732 if (!addr)
733 continue;
734
735 d = blobmsg_open_table(&buf, NULL);
736
737 blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
738 blobmsg_add_string(&buf, "duid", duid);
739 blobmsg_add_string(&buf, "ip6addr", addr);
740
741 if (strcmp(name, "-"))
742 blobmsg_add_string(&buf, "hostname", name);
743
744 blobmsg_close_array(&buf, d);
745 }
746
747 fclose(leases);
748 }
749 else
750 {
751 leases = dnsmasq_leasefile();
752
753 if (!leases)
754 goto out;
755
756 while (fgets(line, sizeof(line) - 1, leases))
757 {
758 ts = strtok(line, " \t");
759 mac = strtok(NULL, " \t");
760 addr = strtok(NULL, " \t");
761 name = strtok(NULL, " \t");
762 duid = strtok(NULL, " \t\n");
763
764 if (!ts || !mac || !addr || !duid)
765 continue;
766
767 if (!strchr(addr, ':'))
768 continue;
769
770 d = blobmsg_open_table(&buf, NULL);
771
772 blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
773 blobmsg_add_string(&buf, "macaddr", mac);
774 blobmsg_add_string(&buf, "ip6addr", addr);
775
776 if (strcmp(name, "*"))
777 blobmsg_add_string(&buf, "hostname", name);
778
779 if (strcmp(duid, "*"))
780 blobmsg_add_string(&buf, "duid", name);
781
782 blobmsg_close_table(&buf, d);
783 }
784
785 fclose(leases);
786 }
787
788 out:
789 blobmsg_close_array(&buf, c);
790 ubus_send_reply(ctx, req, buf.head);
791
792 return 0;
793 }
794
795 static int
796 rpc_luci2_network_ct_count(struct ubus_context *ctx, struct ubus_object *obj,
797 struct ubus_request_data *req, const char *method,
798 struct blob_attr *msg)
799 {
800 FILE *f;
801 char line[128];
802
803 blob_buf_init(&buf, 0);
804
805 if ((f = fopen("/proc/sys/net/netfilter/nf_conntrack_count", "r")) != NULL)
806 {
807 if (fgets(line, sizeof(line) - 1, f))
808 blobmsg_add_u32(&buf, "count", atoi(line));
809
810 fclose(f);
811 }
812
813 if ((f = fopen("/proc/sys/net/netfilter/nf_conntrack_max", "r")) != NULL)
814 {
815 if (fgets(line, sizeof(line) - 1, f))
816 blobmsg_add_u32(&buf, "limit", atoi(line));
817
818 fclose(f);
819 }
820
821 ubus_send_reply(ctx, req, buf.head);
822
823 return 0;
824 }
825
826 static int
827 rpc_luci2_network_ct_table(struct ubus_context *ctx, struct ubus_object *obj,
828 struct ubus_request_data *req, const char *method,
829 struct blob_attr *msg)
830 {
831 FILE *f;
832 int i;
833 void *c, *d;
834 char *p, line[512];
835 bool seen[6];
836
837 blob_buf_init(&buf, 0);
838 c = blobmsg_open_array(&buf, "entries");
839
840 if ((f = fopen("/proc/net/nf_conntrack", "r")) != NULL)
841 {
842 while (fgets(line, sizeof(line) - 1, f))
843 {
844 d = blobmsg_open_table(&buf, NULL);
845 memset(seen, 0, sizeof(seen));
846
847 for (i = 0, p = strtok(line, " "); p; i++, p = strtok(NULL, " "))
848 {
849 if (i == 0)
850 blobmsg_add_u8(&buf, "ipv6", !strcmp(p, "ipv6"));
851 else if (i == 3)
852 blobmsg_add_u32(&buf, "protocol", atoi(p));
853 else if (i == 4)
854 blobmsg_add_u32(&buf, "expires", atoi(p));
855 else if (i >= 5)
856 {
857 if (*p == '[')
858 continue;
859
860 if (!seen[0] && !strncmp(p, "src=", 4))
861 {
862 blobmsg_add_string(&buf, "src", p + 4);
863 seen[0] = true;
864 }
865 else if (!seen[1] && !strncmp(p, "dst=", 4))
866 {
867 blobmsg_add_string(&buf, "dest", p + 4);
868 seen[1] = true;
869 }
870 else if (!seen[2] && !strncmp(p, "sport=", 6))
871 {
872 blobmsg_add_u32(&buf, "sport", atoi(p + 6));
873 seen[2] = true;
874 }
875 else if (!seen[3] && !strncmp(p, "dport=", 6))
876 {
877 blobmsg_add_u32(&buf, "dport", atoi(p + 6));
878 seen[3] = true;
879 }
880 else if (!strncmp(p, "packets=", 8))
881 {
882 blobmsg_add_u32(&buf,
883 seen[4] ? "tx_packets" : "rx_packets",
884 atoi(p + 8));
885 seen[4] = true;
886 }
887 else if (!strncmp(p, "bytes=", 6))
888 {
889 blobmsg_add_u32(&buf,
890 seen[5] ? "tx_bytes" : "rx_bytes",
891 atoi(p + 6));
892 seen[5] = true;
893 }
894 }
895 }
896
897 blobmsg_close_table(&buf, d);
898 }
899
900 fclose(f);
901 }
902
903 blobmsg_close_array(&buf, c);
904 ubus_send_reply(ctx, req, buf.head);
905
906 return 0;
907 }
908
909 static int
910 rpc_luci2_network_arp_table(struct ubus_context *ctx, struct ubus_object *obj,
911 struct ubus_request_data *req, const char *method,
912 struct blob_attr *msg)
913 {
914 FILE *f;
915 void *c, *d;
916 char *addr, *mac, *dev, line[128];
917
918 blob_buf_init(&buf, 0);
919 c = blobmsg_open_array(&buf, "entries");
920
921 if ((f = fopen("/proc/net/arp", "r")) != NULL)
922 {
923 /* skip header line */
924 fgets(line, sizeof(line) - 1, f);
925
926 while (fgets(line, sizeof(line) - 1, f))
927 {
928 addr = strtok(line, " \t");
929
930 strtok(NULL, " \t"); /* HW type */
931 strtok(NULL, " \t"); /* Flags */
932
933 mac = strtok(NULL, " \t");
934
935 strtok(NULL, " \t"); /* Mask */
936
937 dev = strtok(NULL, " \t\n");
938
939 if (!dev)
940 continue;
941
942 d = blobmsg_open_table(&buf, NULL);
943 blobmsg_add_string(&buf, "ipaddr", addr);
944 blobmsg_add_string(&buf, "macaddr", mac);
945 blobmsg_add_string(&buf, "device", dev);
946 blobmsg_close_table(&buf, d);
947 }
948
949 fclose(f);
950 }
951
952 blobmsg_close_array(&buf, c);
953 ubus_send_reply(ctx, req, buf.head);
954
955 return 0;
956 }
957
958 static void
959 put_hexaddr(const char *name, const char *s, const char *m)
960 {
961 int bits;
962 struct in_addr a;
963 char as[sizeof("255.255.255.255/32\0")];
964
965 a.s_addr = strtoul(s, NULL, 16);
966 inet_ntop(AF_INET, &a, as, sizeof(as));
967
968 if (m)
969 {
970 for (a.s_addr = ntohl(strtoul(m, NULL, 16)), bits = 0;
971 a.s_addr & 0x80000000;
972 a.s_addr <<= 1)
973 bits++;
974
975 sprintf(as + strlen(as), "/%u", bits);
976 }
977
978 blobmsg_add_string(&buf, name, as);
979 }
980
981 static int
982 rpc_luci2_network_routes(struct ubus_context *ctx, struct ubus_object *obj,
983 struct ubus_request_data *req, const char *method,
984 struct blob_attr *msg)
985 {
986 FILE *routes;
987 void *c, *d;
988 char *dst, *dmask, *next, *metric, *device;
989 char line[256];
990 unsigned int n;
991
992 if (!(routes = fopen("/proc/net/route", "r")))
993 return rpc_errno_status();
994
995 blob_buf_init(&buf, 0);
996 c = blobmsg_open_array(&buf, "routes");
997
998 /* skip header line */
999 fgets(line, sizeof(line) - 1, routes);
1000
1001 while (fgets(line, sizeof(line) - 1, routes))
1002 {
1003 device = strtok(line, "\t ");
1004 dst = strtok(NULL, "\t ");
1005 next = strtok(NULL, "\t ");
1006
1007 strtok(NULL, "\t "); /* flags */
1008 strtok(NULL, "\t "); /* refcount */
1009 strtok(NULL, "\t "); /* usecount */
1010
1011 metric = strtok(NULL, "\t ");
1012 dmask = strtok(NULL, "\t ");
1013
1014 if (!dmask)
1015 continue;
1016
1017 d = blobmsg_open_table(&buf, NULL);
1018
1019 put_hexaddr("target", dst, dmask);
1020 put_hexaddr("nexthop", next, NULL);
1021
1022 n = strtoul(metric, NULL, 10);
1023 blobmsg_add_u32(&buf, "metric", n);
1024
1025 blobmsg_add_string(&buf, "device", device);
1026
1027 blobmsg_close_table(&buf, d);
1028 }
1029
1030 blobmsg_close_array(&buf, c);
1031 fclose(routes);
1032
1033 ubus_send_reply(ctx, req, buf.head);
1034 return 0;
1035 }
1036
1037 static void
1038 put_hex6addr(const char *name, const char *s, const char *m)
1039 {
1040 int i;
1041 struct in6_addr a;
1042 char as[INET6_ADDRSTRLEN + sizeof("/128")];
1043
1044 #define hex(x) \
1045 (((x) <= '9') ? ((x) - '0') : \
1046 (((x) <= 'F') ? ((x) - 'A' + 10) : \
1047 ((x) - 'a' + 10)))
1048
1049 for (i = 0; i < 16; i++, s += 2)
1050 a.s6_addr[i] = (16 * hex(*s)) + hex(*(s+1));
1051
1052 inet_ntop(AF_INET6, &a, as, sizeof(as));
1053
1054 if (m)
1055 sprintf(as + strlen(as), "/%lu", strtoul(m, NULL, 16));
1056
1057 blobmsg_add_string(&buf, name, as);
1058 }
1059
1060 static int
1061 rpc_luci2_network_routes6(struct ubus_context *ctx, struct ubus_object *obj,
1062 struct ubus_request_data *req, const char *method,
1063 struct blob_attr *msg)
1064 {
1065 FILE *routes;
1066 void *c, *d;
1067 char *src, *smask, *dst, *dmask, *next, *metric, *flags, *device;
1068 char line[256];
1069 unsigned int n;
1070
1071 if (!(routes = fopen("/proc/net/ipv6_route", "r")))
1072 return rpc_errno_status();
1073
1074 blob_buf_init(&buf, 0);
1075 c = blobmsg_open_array(&buf, "routes");
1076
1077 while (fgets(line, sizeof(line) - 1, routes))
1078 {
1079 dst = strtok(line, " ");
1080 dmask = strtok(NULL, " ");
1081 src = strtok(NULL, " ");
1082 smask = strtok(NULL, " ");
1083 next = strtok(NULL, " ");
1084 metric = strtok(NULL, " ");
1085
1086 strtok(NULL, " "); /* refcount */
1087 strtok(NULL, " "); /* usecount */
1088
1089 flags = strtok(NULL, " ");
1090 device = strtok(NULL, " \n");
1091
1092 if (!device)
1093 continue;
1094
1095 n = strtoul(flags, NULL, 16);
1096
1097 if (!(n & 1))
1098 continue;
1099
1100 d = blobmsg_open_table(&buf, NULL);
1101
1102 put_hex6addr("target", dst, dmask);
1103 put_hex6addr("source", src, smask);
1104 put_hex6addr("nexthop", next, NULL);
1105
1106 n = strtoul(metric, NULL, 16);
1107 blobmsg_add_u32(&buf, "metric", n);
1108
1109 blobmsg_add_string(&buf, "device", device);
1110
1111 blobmsg_close_table(&buf, d);
1112 }
1113
1114 blobmsg_close_array(&buf, c);
1115 fclose(routes);
1116
1117 ubus_send_reply(ctx, req, buf.head);
1118 return 0;
1119 }
1120
1121
1122 int rpc_luci2_api_init(struct ubus_context *ctx)
1123 {
1124 int rv = 0;
1125
1126 static const struct ubus_method luci2_system_methods[] = {
1127 UBUS_METHOD_NOARG("syslog", rpc_luci2_system_log),
1128 UBUS_METHOD_NOARG("dmesg", rpc_luci2_system_dmesg),
1129 UBUS_METHOD_NOARG("process_list", rpc_luci2_process_list),
1130 UBUS_METHOD("process_signal", rpc_luci2_process_signal,
1131 rpc_signal_policy),
1132 UBUS_METHOD_NOARG("init_list", rpc_luci2_init_list),
1133 UBUS_METHOD("init_action", rpc_luci2_init_action,
1134 rpc_init_policy),
1135 UBUS_METHOD_NOARG("sshkeys_get", rpc_luci2_sshkeys_get),
1136 UBUS_METHOD("sshkeys_set", rpc_luci2_sshkeys_set,
1137 rpc_sshkey_policy),
1138 UBUS_METHOD("password_set", rpc_luci2_password_set,
1139 rpc_password_policy)
1140 };
1141
1142 static struct ubus_object_type luci2_system_type =
1143 UBUS_OBJECT_TYPE("luci-rpc-luci2-system", luci2_system_methods);
1144
1145 static struct ubus_object system_obj = {
1146 .name = "luci2.system",
1147 .type = &luci2_system_type,
1148 .methods = luci2_system_methods,
1149 .n_methods = ARRAY_SIZE(luci2_system_methods),
1150 };
1151
1152
1153 static const struct ubus_method luci2_network_methods[] = {
1154 UBUS_METHOD_NOARG("conntrack_count", rpc_luci2_network_ct_count),
1155 UBUS_METHOD_NOARG("conntrack_table", rpc_luci2_network_ct_table),
1156 UBUS_METHOD_NOARG("arp_table", rpc_luci2_network_arp_table),
1157 UBUS_METHOD_NOARG("dhcp_leases", rpc_luci2_network_leases),
1158 UBUS_METHOD_NOARG("dhcp6_leases", rpc_luci2_network_leases6),
1159 UBUS_METHOD_NOARG("routes", rpc_luci2_network_routes),
1160 UBUS_METHOD_NOARG("routes6", rpc_luci2_network_routes6),
1161 };
1162
1163 static struct ubus_object_type luci2_network_type =
1164 UBUS_OBJECT_TYPE("luci-rpc-luci2-network", luci2_network_methods);
1165
1166 static struct ubus_object network_obj = {
1167 .name = "luci2.network",
1168 .type = &luci2_network_type,
1169 .methods = luci2_network_methods,
1170 .n_methods = ARRAY_SIZE(luci2_network_methods),
1171 };
1172
1173 cursor = uci_alloc_context();
1174
1175 if (!cursor)
1176 return UBUS_STATUS_UNKNOWN_ERROR;
1177
1178 rv |= ubus_add_object(ctx, &system_obj);
1179 rv |= ubus_add_object(ctx, &network_obj);
1180
1181 return rv;
1182 }
OpenWrt ubus RPC daemon