2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <sys/utsname.h>
17 #include <sys/sysinfo.h>
19 #include <sys/ioctl.h>
20 #include <sys/types.h>
21 #include <sys/reboot.h>
28 #include <json-c/json_tokener.h>
29 #include <libubox/blobmsg_json.h>
30 #include <libubox/uloop.h>
33 #include "sysupgrade.h"
36 static struct blob_buf b;
38 static struct ubus_context *_ctx;
40 static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
41 struct ubus_request_data *req, const char *method,
42 struct blob_attr *msg)
46 char *key, *val, *next;
47 struct utsname utsname;
52 if (uname(&utsname) >= 0)
54 blobmsg_add_string(&b, "kernel", utsname.release);
55 blobmsg_add_string(&b, "hostname", utsname.nodename);
58 if ((f = fopen("/proc/cpuinfo", "r")) != NULL)
60 while(fgets(line, sizeof(line), f))
62 key = strtok(line, "\t:");
63 val = strtok(NULL, "\t\n");
68 if (!strcasecmp(key, "system type") ||
69 !strcasecmp(key, "processor") ||
70 !strcasecmp(key, "cpu") ||
71 !strcasecmp(key, "model name"))
73 strtoul(val + 2, &key, 0);
75 if (key == (val + 2) || *key != 0)
77 blobmsg_add_string(&b, "system", val + 2);
86 if ((f = fopen("/tmp/sysinfo/model", "r")) != NULL ||
87 (f = fopen("/proc/device-tree/model", "r")) != NULL)
89 if (fgets(line, sizeof(line), f))
91 val = strtok(line, "\t\n");
94 blobmsg_add_string(&b, "model", val);
99 else if ((f = fopen("/proc/cpuinfo", "r")) != NULL)
101 while(fgets(line, sizeof(line), f))
103 key = strtok(line, "\t:");
104 val = strtok(NULL, "\t\n");
109 if (!strcasecmp(key, "machine") ||
110 !strcasecmp(key, "hardware"))
112 blobmsg_add_string(&b, "model", val + 2);
120 if ((f = fopen("/tmp/sysinfo/board_name", "r")) != NULL)
122 if (fgets(line, sizeof(line), f))
124 val = strtok(line, "\t\n");
127 blobmsg_add_string(&b, "board_name", val);
132 else if ((f = fopen("/proc/device-tree/compatible", "r")) != NULL)
134 if (fgets(line, sizeof(line), f))
136 val = strtok(line, "\t\n");
141 while ((next = strchr(next, ',')) != NULL)
147 blobmsg_add_string(&b, "board_name", val);
154 if ((f = fopen("/etc/openwrt_release", "r")) != NULL)
156 c = blobmsg_open_table(&b, "release");
158 while (fgets(line, sizeof(line), f))
164 val = strchr(line, '=');
170 if (!strcasecmp(key, "DISTRIB_ID"))
171 key = "distribution";
172 else if (!strcasecmp(key, "DISTRIB_RELEASE"))
174 else if (!strcasecmp(key, "DISTRIB_REVISION"))
176 else if (!strcasecmp(key, "DISTRIB_CODENAME"))
178 else if (!strcasecmp(key, "DISTRIB_TARGET"))
180 else if (!strcasecmp(key, "DISTRIB_DESCRIPTION"))
185 dest = blobmsg_alloc_string_buffer(&b, key, strlen(val));
187 ERROR("Failed to allocate blob.\n");
191 while (val && (ch = *(val++)) != 0) {
195 next = strchr(val, ch);
204 dest += strlen(dest);
207 *(dest++) = *(val++);
211 blobmsg_add_string_buffer(&b);
214 blobmsg_close_array(&b, c);
219 ubus_send_reply(ctx, req, b.head);
221 return UBUS_STATUS_OK;
224 static int system_info(struct ubus_context *ctx, struct ubus_object *obj,
225 struct ubus_request_data *req, const char *method,
226 struct blob_attr *msg)
235 unsigned long long available, cached;
239 return UBUS_STATUS_UNKNOWN_ERROR;
241 if ((f = fopen("/proc/meminfo", "r")) == NULL)
242 return UBUS_STATUS_UNKNOWN_ERROR;
244 /* if linux < 3.14 MemAvailable is not in meminfo */
248 while (fgets(line, sizeof(line), f))
250 key = strtok(line, " :");
251 val = strtok(NULL, " ");
256 if (!strcasecmp(key, "MemAvailable"))
257 available = 1024 * atoll(val);
258 else if (!strcasecmp(key, "Cached"))
259 cached = 1024 * atoll(val);
267 if (!(tm = localtime(&now)))
268 return UBUS_STATUS_UNKNOWN_ERROR;
270 blob_buf_init(&b, 0);
272 blobmsg_add_u32(&b, "localtime", now + tm->tm_gmtoff);
275 blobmsg_add_u32(&b, "uptime", info.uptime);
277 c = blobmsg_open_array(&b, "load");
278 blobmsg_add_u32(&b, NULL, info.loads[0]);
279 blobmsg_add_u32(&b, NULL, info.loads[1]);
280 blobmsg_add_u32(&b, NULL, info.loads[2]);
281 blobmsg_close_array(&b, c);
283 c = blobmsg_open_table(&b, "memory");
284 blobmsg_add_u64(&b, "total",
285 (uint64_t)info.mem_unit * (uint64_t)info.totalram);
286 blobmsg_add_u64(&b, "free",
287 (uint64_t)info.mem_unit * (uint64_t)info.freeram);
288 blobmsg_add_u64(&b, "shared",
289 (uint64_t)info.mem_unit * (uint64_t)info.sharedram);
290 blobmsg_add_u64(&b, "buffered",
291 (uint64_t)info.mem_unit * (uint64_t)info.bufferram);
292 blobmsg_add_u64(&b, "available", available);
293 blobmsg_add_u64(&b, "cached", cached);
294 blobmsg_close_table(&b, c);
296 c = blobmsg_open_table(&b, "swap");
297 blobmsg_add_u64(&b, "total",
298 (uint64_t)info.mem_unit * (uint64_t)info.totalswap);
299 blobmsg_add_u64(&b, "free",
300 (uint64_t)info.mem_unit * (uint64_t)info.freeswap);
301 blobmsg_close_table(&b, c);
304 ubus_send_reply(ctx, req, b.head);
306 return UBUS_STATUS_OK;
309 static int system_reboot(struct ubus_context *ctx, struct ubus_object *obj,
310 struct ubus_request_data *req, const char *method,
311 struct blob_attr *msg)
313 procd_shutdown(RB_AUTOBOOT);
325 static const struct blobmsg_policy watchdog_policy[__WDT_MAX] = {
326 [WDT_FREQUENCY] = { .name = "frequency", .type = BLOBMSG_TYPE_INT32 },
327 [WDT_TIMEOUT] = { .name = "timeout", .type = BLOBMSG_TYPE_INT32 },
328 [WDT_MAGICCLOSE] = { .name = "magicclose", .type = BLOBMSG_TYPE_BOOL },
329 [WDT_STOP] = { .name = "stop", .type = BLOBMSG_TYPE_BOOL },
332 static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
333 struct ubus_request_data *req, const char *method,
334 struct blob_attr *msg)
336 struct blob_attr *tb[__WDT_MAX];
340 return UBUS_STATUS_INVALID_ARGUMENT;
342 blobmsg_parse(watchdog_policy, __WDT_MAX, tb, blob_data(msg), blob_len(msg));
343 if (tb[WDT_FREQUENCY]) {
344 unsigned int timeout = tb[WDT_TIMEOUT] ? blobmsg_get_u32(tb[WDT_TIMEOUT]) :
346 unsigned int freq = blobmsg_get_u32(tb[WDT_FREQUENCY]);
349 if (freq > timeout / 2)
351 watchdog_frequency(freq);
355 if (tb[WDT_TIMEOUT]) {
356 unsigned int timeout = blobmsg_get_u32(tb[WDT_TIMEOUT]);
357 unsigned int frequency = watchdog_frequency(0);
359 if (timeout <= frequency)
360 timeout = frequency * 2;
361 watchdog_timeout(timeout);
364 if (tb[WDT_MAGICCLOSE])
365 watchdog_set_magicclose(blobmsg_get_bool(tb[WDT_MAGICCLOSE]));
368 watchdog_set_stopped(blobmsg_get_bool(tb[WDT_STOP]));
370 if (watchdog_fd() == NULL)
372 else if (watchdog_get_stopped())
377 blob_buf_init(&b, 0);
378 blobmsg_add_string(&b, "status", status);
379 blobmsg_add_u32(&b, "timeout", watchdog_timeout(0));
380 blobmsg_add_u32(&b, "frequency", watchdog_frequency(0));
381 blobmsg_add_u8(&b, "magicclose", watchdog_get_magicclose());
382 ubus_send_reply(ctx, req, b.head);
393 static const struct blobmsg_policy signal_policy[__SIGNAL_MAX] = {
394 [SIGNAL_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
395 [SIGNAL_NUM] = { .name = "signum", .type = BLOBMSG_TYPE_INT32 },
398 static int proc_signal(struct ubus_context *ctx, struct ubus_object *obj,
399 struct ubus_request_data *req, const char *method,
400 struct blob_attr *msg)
402 struct blob_attr *tb[__SIGNAL_MAX];
405 return UBUS_STATUS_INVALID_ARGUMENT;
407 blobmsg_parse(signal_policy, __SIGNAL_MAX, tb, blob_data(msg), blob_len(msg));
408 if (!tb[SIGNAL_PID || !tb[SIGNAL_NUM]])
409 return UBUS_STATUS_INVALID_ARGUMENT;
411 kill(blobmsg_get_u32(tb[SIGNAL_PID]), blobmsg_get_u32(tb[SIGNAL_NUM]));
417 * validate_firmware_image_call - perform validation & store result in global b
419 * @file: firmware image path
421 static int validate_firmware_image_call(const char *file)
423 const char *path = "/usr/libexec/validate_firmware_image";
424 json_object *jsobj = NULL;
441 /* Set stdin & stderr to /dev/null */
442 fd = open("/dev/null", O_RDWR);
449 /* Set stdout to the shared pipe */
454 execl(path, path, file, NULL);
461 tok = json_tokener_new();
467 blob_buf_init(&b, 0);
468 while ((len = read(fds[0], buf, sizeof(buf)))) {
469 jsobj = json_tokener_parse_ex(tok, buf, len);
471 if (json_tokener_get_error(tok) == json_tokener_success)
473 else if (json_tokener_get_error(tok) == json_tokener_continue)
476 fprintf(stderr, "Failed to parse JSON: %d\n",
477 json_tokener_get_error(tok));
484 if (json_object_get_type(jsobj) == json_type_object) {
485 blobmsg_add_object(&b, jsobj);
489 json_object_put(jsobj);
492 json_tokener_free(tok);
498 VALIDATE_FIRMWARE_IMAGE_PATH,
499 __VALIDATE_FIRMWARE_IMAGE_MAX,
502 static const struct blobmsg_policy validate_firmware_image_policy[__VALIDATE_FIRMWARE_IMAGE_MAX] = {
503 [VALIDATE_FIRMWARE_IMAGE_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
506 static int validate_firmware_image(struct ubus_context *ctx,
507 struct ubus_object *obj,
508 struct ubus_request_data *req,
509 const char *method, struct blob_attr *msg)
511 struct blob_attr *tb[__VALIDATE_FIRMWARE_IMAGE_MAX];
514 return UBUS_STATUS_INVALID_ARGUMENT;
516 blobmsg_parse(validate_firmware_image_policy, __VALIDATE_FIRMWARE_IMAGE_MAX, tb, blob_data(msg), blob_len(msg));
517 if (!tb[VALIDATE_FIRMWARE_IMAGE_PATH])
518 return UBUS_STATUS_INVALID_ARGUMENT;
520 if (validate_firmware_image_call(blobmsg_get_string(tb[VALIDATE_FIRMWARE_IMAGE_PATH])))
521 return UBUS_STATUS_UNKNOWN_ERROR;
523 ubus_send_reply(ctx, req, b.head);
525 return UBUS_STATUS_OK;
538 static const struct blobmsg_policy sysupgrade_policy[__SYSUPGRADE_MAX] = {
539 [SYSUPGRADE_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
540 [SYSUPGRADE_FORCE] = { .name = "force", .type = BLOBMSG_TYPE_BOOL },
541 [SYSUPGRADE_BACKUP] = { .name = "backup", .type = BLOBMSG_TYPE_STRING },
542 [SYSUPGRADE_PREFIX] = { .name = "prefix", .type = BLOBMSG_TYPE_STRING },
543 [SYSUPGRADE_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_STRING },
544 [SYSUPGRADE_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_TABLE },
547 static void sysupgrade_error(struct ubus_context *ctx,
548 struct ubus_request_data *req,
553 blob_buf_init(&b, 0);
555 c = blobmsg_open_table(&b, "error");
556 blobmsg_add_string(&b, "message", message);
557 blobmsg_close_table(&b, c);
559 ubus_send_reply(ctx, req, b.head);
562 static int sysupgrade(struct ubus_context *ctx, struct ubus_object *obj,
563 struct ubus_request_data *req, const char *method,
564 struct blob_attr *msg)
568 VALIDATION_FORCEABLE,
569 VALIDATION_ALLOW_BACKUP,
572 static const struct blobmsg_policy validation_policy[__VALIDATION_MAX] = {
573 [VALIDATION_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_BOOL },
574 [VALIDATION_FORCEABLE] = { .name = "forceable", .type = BLOBMSG_TYPE_BOOL },
575 [VALIDATION_ALLOW_BACKUP] = { .name = "allow_backup", .type = BLOBMSG_TYPE_BOOL },
577 struct blob_attr *validation[__VALIDATION_MAX];
578 struct blob_attr *tb[__SYSUPGRADE_MAX];
579 bool valid, forceable, allow_backup;
582 return UBUS_STATUS_INVALID_ARGUMENT;
584 blobmsg_parse(sysupgrade_policy, __SYSUPGRADE_MAX, tb, blob_data(msg), blob_len(msg));
585 if (!tb[SYSUPGRADE_PATH] || !tb[SYSUPGRADE_PREFIX])
586 return UBUS_STATUS_INVALID_ARGUMENT;
588 if (validate_firmware_image_call(blobmsg_get_string(tb[SYSUPGRADE_PATH]))) {
589 sysupgrade_error(ctx, req, "Firmware image couldn't be validated");
590 return UBUS_STATUS_UNKNOWN_ERROR;
593 blobmsg_parse(validation_policy, __VALIDATION_MAX, validation, blob_data(b.head), blob_len(b.head));
595 valid = validation[VALIDATION_VALID] && blobmsg_get_bool(validation[VALIDATION_VALID]);
596 forceable = validation[VALIDATION_FORCEABLE] && blobmsg_get_bool(validation[VALIDATION_FORCEABLE]);
597 allow_backup = validation[VALIDATION_ALLOW_BACKUP] && blobmsg_get_bool(validation[VALIDATION_ALLOW_BACKUP]);
601 sysupgrade_error(ctx, req, "Firmware image is broken and cannot be installed");
602 return UBUS_STATUS_NOT_SUPPORTED;
603 } else if (!tb[SYSUPGRADE_FORCE] || !blobmsg_get_bool(tb[SYSUPGRADE_FORCE])) {
604 sysupgrade_error(ctx, req, "Firmware image is invalid");
605 return UBUS_STATUS_NOT_SUPPORTED;
607 } else if (!allow_backup && tb[SYSUPGRADE_BACKUP]) {
608 sysupgrade_error(ctx, req, "Firmware image doesn't allow preserving a backup");
609 return UBUS_STATUS_NOT_SUPPORTED;
612 sysupgrade_exec_upgraded(blobmsg_get_string(tb[SYSUPGRADE_PREFIX]),
613 blobmsg_get_string(tb[SYSUPGRADE_PATH]),
614 tb[SYSUPGRADE_BACKUP] ? blobmsg_get_string(tb[SYSUPGRADE_BACKUP]) : NULL,
615 tb[SYSUPGRADE_COMMAND] ? blobmsg_get_string(tb[SYSUPGRADE_COMMAND]) : NULL,
616 tb[SYSUPGRADE_OPTIONS]);
618 /* sysupgrade_exec_upgraded() will never return unless something has gone wrong */
619 return UBUS_STATUS_UNKNOWN_ERROR;
623 procd_subscribe_cb(struct ubus_context *ctx, struct ubus_object *obj)
625 notify = obj->has_subscribers;
629 static const struct ubus_method system_methods[] = {
630 UBUS_METHOD_NOARG("board", system_board),
631 UBUS_METHOD_NOARG("info", system_info),
632 UBUS_METHOD_NOARG("reboot", system_reboot),
633 UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
634 UBUS_METHOD("signal", proc_signal, signal_policy),
635 UBUS_METHOD("validate_firmware_image", validate_firmware_image, validate_firmware_image_policy),
636 UBUS_METHOD("sysupgrade", sysupgrade, sysupgrade_policy),
639 static struct ubus_object_type system_object_type =
640 UBUS_OBJECT_TYPE("system", system_methods);
642 static struct ubus_object system_object = {
644 .type = &system_object_type,
645 .methods = system_methods,
646 .n_methods = ARRAY_SIZE(system_methods),
647 .subscribe_cb = procd_subscribe_cb,
651 procd_bcast_event(char *event, struct blob_attr *msg)
658 ret = ubus_notify(_ctx, &system_object, event, msg, -1);
660 fprintf(stderr, "Failed to notify log: %s\n", ubus_strerror(ret));
663 void ubus_init_system(struct ubus_context *ctx)
668 ret = ubus_add_object(ctx, &system_object);
670 ERROR("Failed to add object: %s\n", ubus_strerror(ret));