11 #include <arpa/inet.h>
12 #include <netinet/in.h>
14 #include <libubox/blobmsg_json.h>
17 #include "interface.h"
18 #include "interface-ip.h"
21 static struct netifd_fd proto_fd;
30 struct proto_shell_handler {
31 struct list_head list;
32 struct proto_handler proto;
33 struct config_param_list config;
39 struct proto_shell_state {
40 struct interface_proto_state proto;
41 struct proto_shell_handler *handler;
42 struct blob_attr *config;
44 struct device_user l3_dev;
46 struct uloop_timeout teardown_timeout;
48 struct netifd_process script_task;
49 struct netifd_process proto_task;
51 enum proto_shell_sm sm;
52 bool proto_task_killed;
58 proto_shell_handler(struct interface_proto_state *proto,
59 enum interface_proto_cmd cmd, bool force)
61 struct proto_shell_state *state;
62 struct proto_shell_handler *handler;
63 struct netifd_process *proc;
64 static char error_buf[32];
69 int ret, i = 0, j = 0;
71 state = container_of(proto, struct proto_shell_state, proto);
72 handler = state->handler;
73 proc = &state->script_task;
75 if (cmd == PROTO_CMD_SETUP) {
77 state->last_error = -1;
79 if (state->sm == S_TEARDOWN)
82 if (state->script_task.uloop.pending) {
83 if (state->sm != S_SETUP_ABORT) {
84 uloop_timeout_set(&state->teardown_timeout, 1000);
85 kill(state->script_task.uloop.pid, SIGTERM);
86 if (state->proto_task.uloop.pending)
87 kill(state->proto_task.uloop.pid, SIGTERM);
88 state->sm = S_SETUP_ABORT;
94 state->sm = S_TEARDOWN;
95 if (state->last_error >= 0) {
96 snprintf(error_buf, sizeof(error_buf), "ERROR=%d", state->last_error);
97 envp[j++] = error_buf;
99 uloop_timeout_set(&state->teardown_timeout, 5000);
102 config = blobmsg_format_json(state->config, true);
106 argv[i++] = handler->script_name;
107 argv[i++] = handler->proto.name;
109 argv[i++] = proto->iface->name;
111 if (proto->iface->main_dev.dev)
112 argv[i++] = proto->iface->main_dev.dev->ifname;
116 ret = netifd_start_process(argv, envp, proc);
123 proto_shell_task_finish(struct proto_shell_state *state,
124 struct netifd_process *task)
128 if (task == &state->proto_task)
129 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
132 if (task == &state->proto_task)
133 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN,
138 if (state->script_task.uloop.pending ||
139 state->proto_task.uloop.pending)
142 uloop_timeout_cancel(&state->teardown_timeout);
144 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
148 if (state->script_task.uloop.pending)
151 if (state->proto_task.uloop.pending) {
152 if (!state->proto_task_killed)
153 kill(state->proto_task.uloop.pid, SIGTERM);
157 uloop_timeout_cancel(&state->teardown_timeout);
159 state->proto.proto_event(&state->proto, IFPEV_DOWN);
165 proto_shell_teardown_timeout_cb(struct uloop_timeout *timeout)
167 struct proto_shell_state *state;
169 state = container_of(timeout, struct proto_shell_state, teardown_timeout);
171 netifd_kill_process(&state->script_task);
172 netifd_kill_process(&state->proto_task);
173 proto_shell_task_finish(state, NULL);
177 proto_shell_script_cb(struct netifd_process *p, int ret)
179 struct proto_shell_state *state;
181 state = container_of(p, struct proto_shell_state, script_task);
182 proto_shell_task_finish(state, p);
186 proto_shell_task_cb(struct netifd_process *p, int ret)
188 struct proto_shell_state *state;
190 state = container_of(p, struct proto_shell_state, proto_task);
192 if (state->sm == S_IDLE || state->sm == S_SETUP)
193 state->last_error = WEXITSTATUS(ret);
195 proto_shell_task_finish(state, p);
199 proto_shell_free(struct interface_proto_state *proto)
201 struct proto_shell_state *state;
203 state = container_of(proto, struct proto_shell_state, proto);
209 proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
212 struct blob_attr *cur;
215 blobmsg_for_each_attr(cur, attr, rem) {
216 if (blobmsg_type(cur) != BLOBMSG_TYPE_TABLE) {
217 DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur));
221 interface_ip_add_route(iface, cur, v6);
225 static struct device *
226 proto_shell_create_tunnel(const char *name, struct blob_attr *attr)
231 memset(&b, 0, sizeof(b));
232 blob_buf_init(&b, 0);
233 blob_put(&b, 0, blobmsg_data(attr), blobmsg_data_len(attr));
234 dev = device_create(name, &tunnel_device_type, blob_data(b.head));
256 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
257 [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
258 [NOTIFY_ERROR] = { .name = "error", .type = BLOBMSG_TYPE_ARRAY },
259 [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
260 [NOTIFY_ENV] = { .name = "env", .type = BLOBMSG_TYPE_ARRAY },
261 [NOTIFY_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
262 [NOTIFY_AVAILABLE] = { .name = "available", .type = BLOBMSG_TYPE_BOOL },
263 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
264 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
265 [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
266 [NOTIFY_ROUTES] = { .name = "routes", .type = BLOBMSG_TYPE_ARRAY },
267 [NOTIFY_ROUTES6] = { .name = "routes6", .type = BLOBMSG_TYPE_ARRAY },
268 [NOTIFY_TUNNEL] = { .name = "tunnel", .type = BLOBMSG_TYPE_TABLE },
272 proto_shell_update_link(struct proto_shell_state *state, struct blob_attr *data, struct blob_attr **tb)
274 struct interface *iface = state->proto.iface;
275 struct blob_attr *cur;
279 bool addr_ext = false;
282 if (!tb[NOTIFY_LINK_UP])
283 return UBUS_STATUS_INVALID_ARGUMENT;
285 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
287 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
291 if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL) {
292 addr_ext = blobmsg_get_bool(cur);
297 if (!tb[NOTIFY_IFNAME]) {
298 if (!iface->main_dev.dev)
299 return UBUS_STATUS_INVALID_ARGUMENT;
301 if (state->l3_dev.dev)
302 device_remove_user(&state->l3_dev);
304 devname = blobmsg_data(tb[NOTIFY_IFNAME]);
305 if (tb[NOTIFY_TUNNEL]) {
306 dev = proto_shell_create_tunnel(devname,
309 return UBUS_STATUS_INVALID_ARGUMENT;
311 dev = device_get(devname, dev_create);
313 return UBUS_STATUS_NOT_FOUND;
316 device_add_user(&state->l3_dev, dev);
317 iface->l3_dev = &state->l3_dev;
318 device_claim(&state->l3_dev);
321 interface_update_start(iface);
322 proto_apply_ip_settings(iface, data, addr_ext);
324 if ((cur = tb[NOTIFY_ROUTES]) != NULL)
325 proto_shell_parse_route_list(state->proto.iface, cur, false);
327 if ((cur = tb[NOTIFY_ROUTES6]) != NULL)
328 proto_shell_parse_route_list(state->proto.iface, cur, true);
330 interface_update_complete(state->proto.iface);
332 state->proto.proto_event(&state->proto, IFPEV_UP);
338 fill_string_list(struct blob_attr *attr, char **argv, int max)
340 struct blob_attr *cur;
347 blobmsg_for_each_attr(cur, attr, rem) {
348 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
351 if (!blobmsg_check_attr(cur, NULL))
354 argv[argc++] = blobmsg_data(cur);
365 proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
367 static char *argv[64];
368 static char *env[32];
370 if (!tb[NOTIFY_COMMAND])
373 if (!fill_string_list(tb[NOTIFY_COMMAND], argv, ARRAY_SIZE(argv)))
376 if (!fill_string_list(tb[NOTIFY_ENV], env, ARRAY_SIZE(env)))
379 netifd_start_process((const char **) argv, (char **) env, &state->proto_task);
384 return UBUS_STATUS_INVALID_ARGUMENT;
388 proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
390 unsigned int signal = ~0;
392 if (tb[NOTIFY_SIGNAL])
393 signal = blobmsg_get_u32(tb[NOTIFY_SIGNAL]);
398 if (state->proto_task.uloop.pending) {
399 state->proto_task_killed = true;
400 kill(state->proto_task.uloop.pid, signal);
407 proto_shell_notify_error(struct proto_shell_state *state, struct blob_attr **tb)
409 struct blob_attr *cur;
414 if (!tb[NOTIFY_ERROR])
415 return UBUS_STATUS_INVALID_ARGUMENT;
417 blobmsg_for_each_attr(cur, tb[NOTIFY_ERROR], rem) {
418 if (n_data + 1 == ARRAY_SIZE(data))
421 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
424 if (!blobmsg_check_attr(cur, NULL))
427 data[n_data++] = blobmsg_data(cur);
433 interface_add_error(state->proto.iface, state->handler->proto.name,
434 data[0], (const char **) &data[1], n_data - 1);
439 return UBUS_STATUS_INVALID_ARGUMENT;
443 proto_shell_block_restart(struct proto_shell_state *state, struct blob_attr **tb)
445 state->proto.iface->autostart = false;
450 proto_shell_set_available(struct proto_shell_state *state, struct blob_attr **tb)
452 if (!tb[NOTIFY_AVAILABLE])
453 return UBUS_STATUS_INVALID_ARGUMENT;
455 interface_set_available(state->proto.iface, blobmsg_get_bool(tb[NOTIFY_AVAILABLE]));
460 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
462 struct proto_shell_state *state;
463 struct blob_attr *tb[__NOTIFY_LAST];
465 state = container_of(proto, struct proto_shell_state, proto);
467 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
468 if (!tb[NOTIFY_ACTION])
469 return UBUS_STATUS_INVALID_ARGUMENT;
471 switch(blobmsg_get_u32(tb[NOTIFY_ACTION])) {
473 return proto_shell_update_link(state, attr, tb);
475 return proto_shell_run_command(state, tb);
477 return proto_shell_kill_command(state, tb);
479 return proto_shell_notify_error(state, tb);
481 return proto_shell_block_restart(state, tb);
483 return proto_shell_set_available(state, tb);
485 return UBUS_STATUS_INVALID_ARGUMENT;
489 static struct interface_proto_state *
490 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
491 struct blob_attr *attr)
493 struct proto_shell_state *state;
495 state = calloc(1, sizeof(*state));
496 state->config = malloc(blob_pad_len(attr));
500 memcpy(state->config, attr, blob_pad_len(attr));
501 state->proto.free = proto_shell_free;
502 state->proto.notify = proto_shell_notify;
503 state->proto.cb = proto_shell_handler;
504 state->teardown_timeout.cb = proto_shell_teardown_timeout_cb;
505 state->script_task.cb = proto_shell_script_cb;
506 state->script_task.dir_fd = proto_fd.fd;
507 state->script_task.log_prefix = iface->name;
508 state->proto_task.cb = proto_shell_task_cb;
509 state->proto_task.dir_fd = proto_fd.fd;
510 state->proto_task.log_prefix = iface->name;
511 state->handler = container_of(h, struct proto_shell_handler, proto);
513 return &state->proto;
521 check_type(json_object *obj, json_type type)
526 if (json_object_get_type(obj) != type)
532 static inline json_object *
533 get_field(json_object *obj, const char *name, json_type type)
535 return check_type(json_object_object_get(obj, name), type);
539 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
541 struct blobmsg_policy *attrs;
542 char *str_buf, *str_cur;
546 config->n_params = json_object_array_length(obj);
547 attrs = calloc(1, sizeof(*attrs) * config->n_params);
551 config->params = attrs;
552 for (i = 0; i < config->n_params; i++) {
553 json_object *cur, *name, *type;
555 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
559 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
563 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
567 attrs[i].name = json_object_get_string(name);
568 attrs[i].type = json_object_get_int(type);
569 if (attrs[i].type > BLOBMSG_TYPE_LAST)
572 str_len += strlen(attrs[i].name) + 1;
575 str_buf = malloc(str_len);
580 for (i = 0; i < config->n_params; i++) {
581 const char *name = attrs[i].name;
583 attrs[i].name = str_cur;
584 str_cur += sprintf(str_cur, "%s", name) + 1;
591 config->n_params = 0;
596 proto_shell_add_handler(const char *script, json_object *obj)
598 struct proto_shell_handler *handler;
599 struct proto_handler *proto;
600 json_object *config, *tmp;
604 if (!check_type(obj, json_type_object))
607 tmp = get_field(obj, "name", json_type_string);
611 name = json_object_get_string(tmp);
613 handler = calloc(1, sizeof(*handler) +
619 strcpy(handler->script_name, script);
621 str = handler->script_name + strlen(handler->script_name) + 1;
624 proto = &handler->proto;
626 proto->config_params = &handler->config;
627 proto->attach = proto_shell_attach;
629 tmp = get_field(obj, "no-device", json_type_boolean);
630 if (tmp && json_object_get_boolean(tmp))
631 handler->proto.flags |= PROTO_FLAG_NODEV;
633 tmp = get_field(obj, "available", json_type_boolean);
634 if (tmp && json_object_get_boolean(tmp))
635 handler->proto.flags |= PROTO_FLAG_INIT_AVAILABLE;
637 config = get_field(obj, "config", json_type_array);
639 handler->config_buf = proto_shell_parse_config(&handler->config, config);
641 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
642 add_proto_handler(proto);
645 static void proto_shell_add_script(const char *name)
647 struct json_tokener *tok = NULL;
649 static char buf[512];
654 #define DUMP_SUFFIX " '' dump"
656 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
657 sprintf(cmd, "%s" DUMP_SUFFIX, name);
664 start = fgets(buf, sizeof(buf), f);
671 tok = json_tokener_new();
673 obj = json_tokener_parse_ex(tok, start, len);
674 if (!is_error(obj)) {
675 proto_shell_add_handler(name, obj);
676 json_object_put(obj);
677 json_tokener_free(tok);
679 } else if (start[len - 1] == '\n') {
680 json_tokener_free(tok);
683 } while (!feof(f) && !ferror(f));
686 json_tokener_free(tok);
691 static void __init proto_shell_init(void)
697 main_fd = open(".", O_RDONLY | O_DIRECTORY);
701 if (chdir(main_path)) {
702 perror("chdir(main path)");
706 if (chdir("./proto"))
709 proto_fd.fd = open(".", O_RDONLY | O_DIRECTORY);
713 netifd_fd_add(&proto_fd);
714 glob("./*.sh", 0, NULL, &g);
715 for (i = 0; i < g.gl_pathc; i++)
716 proto_shell_add_script(g.gl_pathv[i]);