rename config_init_interfaces to config_init_all
[project/netifd.git] / ubus.c
1 #define _GNU_SOURCE
2
3 #include <string.h>
4 #include <stdio.h>
5
6 #include "netifd.h"
7 #include "interface.h"
8 #include "proto.h"
9 #include "ubus.h"
10 #include "system.h"
11
12 static struct ubus_context *ctx = NULL;
13 static struct blob_buf b;
14 static struct netifd_fd ubus_fd;
15
16 /* global object */
17
18 static int
19 netifd_handle_restart(struct ubus_context *ctx, struct ubus_object *obj,
20 struct ubus_request_data *req, const char *method,
21 struct blob_attr *msg)
22 {
23 netifd_restart();
24 return 0;
25 }
26
27 static int
28 netifd_handle_reload(struct ubus_context *ctx, struct ubus_object *obj,
29 struct ubus_request_data *req, const char *method,
30 struct blob_attr *msg)
31 {
32 netifd_reload();
33 return 0;
34 }
35
36 static struct ubus_method main_object_methods[] = {
37 { .name = "restart", .handler = netifd_handle_restart },
38 { .name = "reload", .handler = netifd_handle_reload },
39 };
40
41 static struct ubus_object_type main_object_type =
42 UBUS_OBJECT_TYPE("netifd", main_object_methods);
43
44 static struct ubus_object main_object = {
45 .name = "network",
46 .type = &main_object_type,
47 .methods = main_object_methods,
48 .n_methods = ARRAY_SIZE(main_object_methods),
49 };
50
51 enum {
52 DEV_NAME,
53 __DEV_MAX,
54 };
55
56 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
57 [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
58 };
59
60 static int
61 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
62 struct ubus_request_data *req, const char *method,
63 struct blob_attr *msg)
64 {
65 struct device *dev = NULL;
66 struct blob_attr *tb[__DEV_MAX];
67
68 blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
69
70 if (tb[DEV_NAME]) {
71 dev = device_get(blobmsg_data(tb[DEV_NAME]), false);
72 if (!dev)
73 return UBUS_STATUS_INVALID_ARGUMENT;
74 }
75
76 blob_buf_init(&b, 0);
77 device_dump_status(&b, dev);
78 ubus_send_reply(ctx, req, b.head);
79
80 return 0;
81 }
82
83 enum {
84 ALIAS_ATTR_ALIAS,
85 ALIAS_ATTR_DEV,
86 __ALIAS_ATTR_MAX,
87 };
88
89 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
90 [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
91 [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
92 };
93
94 static int
95 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
96 struct ubus_request_data *req, const char *method,
97 struct blob_attr *msg)
98 {
99 struct device *dev = NULL;
100 struct blob_attr *tb[__ALIAS_ATTR_MAX];
101 struct blob_attr *cur;
102 int rem;
103
104 blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
105
106 if (!tb[ALIAS_ATTR_ALIAS])
107 return UBUS_STATUS_INVALID_ARGUMENT;
108
109 if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
110 dev = device_get(blobmsg_data(cur), true);
111 if (!dev)
112 return UBUS_STATUS_NOT_FOUND;
113 }
114
115 blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
116 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
117 goto error;
118
119 if (!blobmsg_check_attr(cur, NULL))
120 goto error;
121
122 alias_notify_device(blobmsg_data(cur), dev);
123 }
124 return 0;
125
126 error:
127 device_free_unused(dev);
128 return UBUS_STATUS_INVALID_ARGUMENT;
129 }
130
131 static struct ubus_method dev_object_methods[] = {
132 UBUS_METHOD("status", netifd_dev_status, dev_policy),
133 UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
134 };
135
136 static struct ubus_object_type dev_object_type =
137 UBUS_OBJECT_TYPE("device", dev_object_methods);
138
139 static struct ubus_object dev_object = {
140 .name = "network.device",
141 .type = &dev_object_type,
142 .methods = dev_object_methods,
143 .n_methods = ARRAY_SIZE(dev_object_methods),
144 };
145
146 int
147 netifd_ubus_init(const char *path)
148 {
149 int ret;
150
151 ctx = ubus_connect(path);
152 if (!ctx)
153 return -EIO;
154
155 DPRINTF("connected as %08x\n", ctx->local_id);
156 uloop_init();
157 ubus_add_uloop(ctx);
158 ubus_fd.fd = ctx->sock.fd;
159 netifd_fd_add(&ubus_fd);
160
161 ret = ubus_add_object(ctx, &main_object);
162 if (ret)
163 goto out;
164
165 ret = ubus_add_object(ctx, &dev_object);
166
167 out:
168 if (ret != 0)
169 fprintf(stderr, "Failed to publish object: %s\n", ubus_strerror(ret));
170 return ret;
171 }
172
173 void
174 netifd_ubus_done(void)
175 {
176 ubus_free(ctx);
177 }
178
179
180 /* per-interface object */
181
182 static int
183 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
184 struct ubus_request_data *req, const char *method,
185 struct blob_attr *msg)
186 {
187 struct interface *iface;
188
189 iface = container_of(obj, struct interface, ubus);
190 interface_set_up(iface);
191
192 return 0;
193 }
194
195 static int
196 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
197 struct ubus_request_data *req, const char *method,
198 struct blob_attr *msg)
199 {
200 struct interface *iface;
201
202 iface = container_of(obj, struct interface, ubus);
203 interface_set_down(iface);
204
205 return 0;
206 }
207
208 static void
209 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
210 {
211 struct interface_error *error;
212 void *e, *e2, *e3;
213 int i;
214
215 e = blobmsg_open_array(b, "errors");
216 list_for_each_entry(error, &iface->errors, list) {
217 e2 = blobmsg_open_table(b, NULL);
218
219 blobmsg_add_string(b, "subsystem", error->subsystem);
220 blobmsg_add_string(b, "code", error->code);
221 if (error->data[0]) {
222 e3 = blobmsg_open_array(b, "data");
223 for (i = 0; error->data[i]; i++)
224 blobmsg_add_string(b, NULL, error->data[i]);
225 blobmsg_close_array(b, e3);
226 }
227
228 blobmsg_close_table(b, e2);
229 }
230 blobmsg_close_array(b, e);
231 }
232
233 static int
234 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
235 struct ubus_request_data *req, const char *method,
236 struct blob_attr *msg)
237 {
238 struct interface *iface;
239 struct device *dev;
240
241 iface = container_of(obj, struct interface, ubus);
242
243 blob_buf_init(&b, 0);
244 blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
245 blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
246 blobmsg_add_u8(&b, "available", iface->available);
247 blobmsg_add_u8(&b, "autostart", iface->autostart);
248
249 if (iface->state == IFS_UP) {
250 time_t cur = system_get_rtime();
251 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
252 blobmsg_add_string(&b, "l3_device", iface->l3_dev->dev->ifname);
253 }
254
255 dev = iface->main_dev.dev;
256 if (dev && !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
257 blobmsg_add_string(&b, "device", dev->ifname);
258
259 if (!list_is_empty(&iface->errors))
260 netifd_add_interface_errors(&b, iface);
261
262 ubus_send_reply(ctx, req, b.head);
263
264 return 0;
265 }
266
267 static int
268 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
269 struct ubus_request_data *req, const char *method,
270 struct blob_attr *msg)
271 {
272 struct interface *iface;
273 struct device *dev, *main_dev = NULL;
274 struct blob_attr *tb[__DEV_MAX];
275 bool add = !strncmp(method, "add", 3);
276 const char *devname;
277 int ret;
278
279 iface = container_of(obj, struct interface, ubus);
280
281 blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
282
283 if (!tb[DEV_NAME])
284 return UBUS_STATUS_INVALID_ARGUMENT;
285
286 devname = blobmsg_data(tb[DEV_NAME]);
287
288 device_lock();
289
290 if (iface->main_dev.hotplug) {
291 dev = iface->main_dev.dev;
292
293 if (dev) {
294 if (!add && strcmp(dev->ifname, devname) != 0) {
295 ret = UBUS_STATUS_INVALID_ARGUMENT;
296 goto out;
297 }
298
299 interface_set_available(iface, false);
300 device_remove_user(&iface->main_dev);
301 }
302 } else
303 main_dev = iface->main_dev.dev;
304
305 dev = device_get(blobmsg_data(tb[DEV_NAME]), add);
306 if (!dev && (main_dev || add)) {
307 ret = UBUS_STATUS_NOT_FOUND;
308 goto out;
309 }
310
311 if (!main_dev) {
312 if (add) {
313 device_add_user(&iface->main_dev, dev);
314 iface->main_dev.hotplug = true;
315 }
316 ret = 0;
317 goto out;
318 }
319
320 if (!main_dev->hotplug_ops) {
321 ret = UBUS_STATUS_NOT_SUPPORTED;
322 goto out;
323 }
324
325 if (main_dev != dev) {
326 if (add)
327 ret = main_dev->hotplug_ops->add(main_dev, dev);
328 else
329 ret = main_dev->hotplug_ops->del(main_dev, dev);
330 if (ret)
331 ret = UBUS_STATUS_UNKNOWN_ERROR;
332 } else {
333 ret = UBUS_STATUS_INVALID_ARGUMENT;
334 }
335
336 out:
337 device_unlock();
338
339 return ret;
340 }
341
342
343 static int
344 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
345 struct ubus_request_data *req, const char *method,
346 struct blob_attr *msg)
347 {
348 struct interface *iface;
349
350 iface = container_of(obj, struct interface, ubus);
351
352 if (!iface->proto || !iface->proto->notify)
353 return UBUS_STATUS_NOT_SUPPORTED;
354
355 return iface->proto->notify(iface->proto, msg);
356 }
357
358 static void
359 netifd_iface_do_remove(struct uloop_timeout *timeout)
360 {
361 struct interface *iface;
362
363 iface = container_of(timeout, struct interface, remove_timer);
364 vlist_delete(&interfaces, &iface->node);
365 }
366
367 static int
368 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
369 struct ubus_request_data *req, const char *method,
370 struct blob_attr *msg)
371 {
372 struct interface *iface;
373
374 iface = container_of(obj, struct interface, ubus);
375 if (iface->remove_timer.cb)
376 return UBUS_STATUS_INVALID_ARGUMENT;
377
378 iface->remove_timer.cb = netifd_iface_do_remove;
379 uloop_timeout_set(&iface->remove_timer, 100);
380 return 0;
381 }
382
383 static struct ubus_method iface_object_methods[] = {
384 { .name = "up", .handler = netifd_handle_up },
385 { .name = "down", .handler = netifd_handle_down },
386 { .name = "status", .handler = netifd_handle_status },
387 UBUS_METHOD("add_device", netifd_iface_handle_device, dev_policy ),
388 UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_policy ),
389 { .name = "notify_proto", .handler = netifd_iface_notify_proto },
390 { .name = "remove", .handler = netifd_iface_remove }
391 };
392
393 static struct ubus_object_type iface_object_type =
394 UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
395
396
397 void
398 netifd_ubus_interface_event(struct interface *iface, bool up)
399 {
400 blob_buf_init(&b, 0);
401 blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
402 blobmsg_add_string(&b, "interface", iface->name);
403 ubus_send_event(ctx, "network.interface", b.head);
404 }
405
406 void
407 netifd_ubus_add_interface(struct interface *iface)
408 {
409 struct ubus_object *obj = &iface->ubus;
410 char *name = NULL;
411
412 asprintf(&name, "%s.interface.%s", main_object.name, iface->name);
413 if (!name)
414 return;
415
416 obj->name = name;
417 obj->type = &iface_object_type;
418 obj->methods = iface_object_methods;
419 obj->n_methods = ARRAY_SIZE(iface_object_methods);
420 if (ubus_add_object(ctx, &iface->ubus)) {
421 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
422 free(name);
423 obj->name = NULL;
424 }
425 }
426
427 void
428 netifd_ubus_remove_interface(struct interface *iface)
429 {
430 if (!iface->ubus.name)
431 return;
432
433 ubus_remove_object(ctx, &iface->ubus);
434 free((void *) iface->ubus.name);
435 }