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"
23 struct proto_shell_handler {
24 struct list_head list;
25 struct proto_handler proto;
26 struct config_param_list config;
31 struct proto_shell_state {
32 struct interface_proto_state proto;
33 struct proto_shell_handler *handler;
34 struct blob_attr *config;
36 struct device_user l3_dev;
38 struct uloop_timeout setup_timeout;
39 struct uloop_process setup_task;
40 struct uloop_process teardown_task;
41 bool teardown_pending;
42 bool teardown_wait_task;
44 struct uloop_process proto_task;
48 kill_process(struct uloop_process *proc)
53 kill(proc->pid, SIGTERM);
54 uloop_process_delete(proc);
58 start_process(const char **argv, char **env, struct uloop_process *proc)
64 if ((pid = fork()) < 0)
75 execvp(argv[0], (char **) argv);
83 uloop_process_add(proc);
89 proto_shell_handler(struct interface_proto_state *proto,
90 enum interface_proto_cmd cmd, bool force)
92 struct proto_shell_state *state;
93 struct proto_shell_handler *handler;
94 struct uloop_process *proc;
100 state = container_of(proto, struct proto_shell_state, proto);
101 handler = state->handler;
103 if (cmd == PROTO_CMD_SETUP) {
105 proc = &state->setup_task;
108 proc = &state->teardown_task;
109 if (state->setup_task.pending && !state->teardown_wait_task) {
110 uloop_timeout_set(&state->setup_timeout, 1000);
111 kill(state->setup_task.pid, SIGTERM);
112 state->teardown_pending = true;
117 config = blobmsg_format_json(state->config, true);
121 argv[i++] = handler->script_name;
122 argv[i++] = handler->proto.name;
124 argv[i++] = proto->iface->name;
126 if (proto->iface->main_dev.dev)
127 argv[i++] = proto->iface->main_dev.dev->ifname;
130 ret = start_process(argv, NULL, proc);
137 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
139 struct proto_shell_state *state;
141 state = container_of(timeout, struct proto_shell_state, setup_timeout);
142 kill(state->setup_task.pid, SIGKILL);
146 proto_shell_setup_cb(struct uloop_process *p, int ret)
148 struct proto_shell_state *state;
150 state = container_of(p, struct proto_shell_state, setup_task);
151 uloop_timeout_cancel(&state->setup_timeout);
152 if (state->teardown_pending) {
153 state->teardown_pending = false;
154 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
159 proto_shell_teardown_cb(struct uloop_process *p, int ret)
161 struct proto_shell_state *state;
163 state = container_of(p, struct proto_shell_state, teardown_task);
165 if (state->teardown_wait_task)
168 kill_process(&state->proto_task);
170 if (state->l3_dev.dev)
171 device_remove_user(&state->l3_dev);
173 state->proto.proto_event(&state->proto, IFPEV_DOWN);
177 proto_shell_task_cb(struct uloop_process *p, int ret)
179 struct proto_shell_state *state;
180 bool teardown_wait_task;
182 state = container_of(p, struct proto_shell_state, proto_task);
184 teardown_wait_task = state->teardown_wait_task;
185 state->teardown_wait_task = false;
186 if (state->teardown_pending || state->teardown_task.pending)
189 if (teardown_wait_task) {
190 proto_shell_teardown_cb(&state->teardown_task, 0);
194 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
195 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
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_addr_list(struct interface *iface, struct blob_attr *attr,
210 bool v6, bool external)
212 struct device_addr *addr;
213 struct blob_attr *cur;
216 blobmsg_for_each_attr(cur, attr, rem) {
217 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
218 DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur));
222 addr = proto_parse_ip_addr_string(blobmsg_data(cur), v6, v6 ? 32 : 128);
224 DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur));
229 addr->flags |= DEVADDR_EXTERNAL;
231 vlist_add(&iface->proto_addr, &addr->node);
243 static const struct blobmsg_policy route_attr[__ROUTE_LAST] = {
244 [ROUTE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
245 [ROUTE_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
246 [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
247 [ROUTE_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
251 parse_route(struct interface *iface, struct blob_attr *attr, bool v6)
253 struct blob_attr *tb[__ROUTE_LAST], *cur;
254 struct device_route *route;
255 int af = v6 ? AF_INET6 : AF_INET;
257 blobmsg_parse(route_attr, __ROUTE_LAST, tb, blobmsg_data(attr), blobmsg_data_len(attr));
259 if (!tb[ROUTE_GATEWAY] && !tb[ROUTE_DEVICE])
262 route = calloc(1, sizeof(*route));
266 route->mask = v6 ? 128 : 32;
267 if ((cur = tb[ROUTE_MASK]) != NULL) {
268 route->mask = blobmsg_get_u32(cur);
269 if (route->mask > v6 ? 128 : 32)
273 if ((cur = tb[ROUTE_TARGET]) != NULL) {
274 if (!inet_pton(af, blobmsg_data(cur), &route->addr)) {
275 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur));
280 if ((cur = tb[ROUTE_GATEWAY]) != NULL) {
281 if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) {
282 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur));
287 if ((cur = tb[ROUTE_DEVICE]) != NULL)
288 route->device = device_get(blobmsg_data(cur), true);
290 vlist_add(&iface->proto_route, &route->node);
298 proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
301 struct blob_attr *cur;
304 blobmsg_for_each_attr(cur, attr, rem) {
305 if (blobmsg_type(cur) != BLOBMSG_TYPE_TABLE) {
306 DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur));
310 parse_route(iface, cur, v6);
331 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
332 [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
333 [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
334 [NOTIFY_ENV] = { .name = "env", .type = BLOBMSG_TYPE_ARRAY },
335 [NOTIFY_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
336 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
337 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
338 [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
339 [NOTIFY_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
340 [NOTIFY_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
341 [NOTIFY_ROUTES] = { .name = "routes", .type = BLOBMSG_TYPE_ARRAY },
342 [NOTIFY_ROUTES6] = { .name = "routes6", .type = BLOBMSG_TYPE_ARRAY },
343 [NOTIFY_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
344 [NOTIFY_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
348 proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
350 struct blob_attr *cur;
351 bool addr_ext = false;
354 if (!tb[NOTIFY_LINK_UP])
355 return UBUS_STATUS_INVALID_ARGUMENT;
357 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
359 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
363 if (!tb[NOTIFY_IFNAME]) {
364 if (!state->proto.iface->main_dev.dev)
365 return UBUS_STATUS_INVALID_ARGUMENT;
366 } else if (!state->l3_dev.dev) {
367 device_add_user(&state->l3_dev,
368 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
369 device_claim(&state->l3_dev);
370 state->proto.iface->l3_dev = &state->l3_dev;
373 interface_ip_update_start(state->proto.iface);
375 if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL)
376 addr_ext = blobmsg_get_bool(cur);
378 if ((cur = tb[NOTIFY_IPADDR]) != NULL)
379 proto_shell_parse_addr_list(state->proto.iface, cur, false, addr_ext);
381 if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
382 proto_shell_parse_addr_list(state->proto.iface, cur, true, addr_ext);
384 if ((cur = tb[NOTIFY_ROUTES]) != NULL)
385 proto_shell_parse_route_list(state->proto.iface, cur, false);
387 if ((cur = tb[NOTIFY_ROUTES6]) != NULL)
388 proto_shell_parse_route_list(state->proto.iface, cur, true);
390 if ((cur = tb[NOTIFY_DNS]) != NULL)
391 interface_add_dns_server_list(state->proto.iface, cur);
393 if ((cur = tb[NOTIFY_DNS_SEARCH]) != NULL)
394 interface_add_dns_search_list(state->proto.iface, cur);
396 interface_ip_update_complete(state->proto.iface);
398 state->proto.proto_event(&state->proto, IFPEV_UP);
404 fill_string_list(struct blob_attr *attr, char **argv, int max)
406 struct blob_attr *cur;
413 blobmsg_for_each_attr(cur, attr, rem) {
414 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
417 if (!blobmsg_check_attr(cur, NULL))
420 argv[argc++] = blobmsg_data(cur);
431 proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
436 if (!tb[NOTIFY_COMMAND])
439 if (!fill_string_list(tb[NOTIFY_COMMAND], argv, ARRAY_SIZE(argv)))
442 if (!fill_string_list(tb[NOTIFY_ENV], env, ARRAY_SIZE(env)))
445 start_process((const char **) argv, (char **) env, &state->proto_task);
450 return UBUS_STATUS_INVALID_ARGUMENT;
454 proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
456 unsigned int signal = ~0;
458 if (tb[NOTIFY_SIGNAL])
459 signal = blobmsg_get_u32(tb[NOTIFY_SIGNAL]);
464 if (state->proto_task.pending) {
465 kill(state->proto_task.pid, signal);
466 state->teardown_wait_task = true;
473 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
475 struct proto_shell_state *state;
476 struct blob_attr *tb[__NOTIFY_LAST];
478 state = container_of(proto, struct proto_shell_state, proto);
480 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
481 if (!tb[NOTIFY_ACTION])
482 return UBUS_STATUS_INVALID_ARGUMENT;
484 switch(blobmsg_get_u32(tb[NOTIFY_ACTION])) {
486 return proto_shell_update_link(state, tb);
488 return proto_shell_run_command(state, tb);
490 return proto_shell_kill_command(state, tb);
492 return UBUS_STATUS_INVALID_ARGUMENT;
496 struct interface_proto_state *
497 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
498 struct blob_attr *attr)
500 struct proto_shell_state *state;
502 state = calloc(1, sizeof(*state));
503 state->config = malloc(blob_pad_len(attr));
507 memcpy(state->config, attr, blob_pad_len(attr));
508 state->proto.free = proto_shell_free;
509 state->proto.notify = proto_shell_notify;
510 state->proto.cb = proto_shell_handler;
511 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
512 state->setup_task.cb = proto_shell_setup_cb;
513 state->teardown_task.cb = proto_shell_teardown_cb;
514 state->proto_task.cb = proto_shell_task_cb;
515 state->handler = container_of(h, struct proto_shell_handler, proto);
517 return &state->proto;
525 check_type(json_object *obj, json_type type)
530 if (json_object_get_type(obj) != type)
536 static inline json_object *
537 get_field(json_object *obj, const char *name, json_type type)
539 return check_type(json_object_object_get(obj, name), type);
543 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
545 struct blobmsg_policy *attrs;
546 char *str_buf, *str_cur;
550 config->n_params = json_object_array_length(obj);
551 attrs = calloc(1, sizeof(*attrs) * config->n_params);
555 config->params = attrs;
556 for (i = 0; i < config->n_params; i++) {
557 json_object *cur, *name, *type;
559 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
563 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
567 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
571 attrs[i].name = json_object_get_string(name);
572 attrs[i].type = json_object_get_int(type);
573 if (attrs[i].type > BLOBMSG_TYPE_LAST)
576 str_len += strlen(attrs[i].name) + 1;
579 str_buf = malloc(str_len);
584 for (i = 0; i < config->n_params; i++) {
585 const char *name = attrs[i].name;
587 attrs[i].name = str_cur;
588 str_cur += sprintf(str_cur, "%s", name) + 1;
595 config->n_params = 0;
600 proto_shell_add_handler(const char *script, json_object *obj)
602 struct proto_shell_handler *handler;
603 struct proto_handler *proto;
604 json_object *config, *tmp;
608 if (!check_type(obj, json_type_object))
611 tmp = get_field(obj, "name", json_type_string);
615 name = json_object_get_string(tmp);
617 handler = calloc(1, sizeof(*handler) +
623 strcpy(handler->script_name, script);
625 str = handler->script_name + strlen(handler->script_name) + 1;
628 proto = &handler->proto;
630 proto->config_params = &handler->config;
631 proto->attach = proto_shell_attach;
633 tmp = get_field(obj, "no-device", json_type_boolean);
634 if (tmp && json_object_get_boolean(tmp))
635 handler->proto.flags |= PROTO_FLAG_NODEV;
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];
650 char *start, *end, *cmd;
654 #define DUMP_SUFFIX " '' dump"
656 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
657 sprintf(cmd, "%s" DUMP_SUFFIX, name);
664 buflen = fread(buf, 1, sizeof(buf) - 1, f);
671 end = memchr(start, '\n', len);
676 tok = json_tokener_new();
678 obj = json_tokener_parse_ex(tok, start, len);
679 if (!is_error(obj)) {
680 proto_shell_add_handler(name, obj);
681 json_object_put(obj);
682 json_tokener_free(tok);
688 len = buflen - (start - buf);
691 } while (!feof(f) && !ferror(f));
694 json_tokener_free(tok);
699 void __init proto_shell_init(void)
705 main_fd = open(".", O_RDONLY | O_DIRECTORY);
709 if (chdir(main_path)) {
710 perror("chdir(main path)");
714 if (chdir("./proto"))
717 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
721 glob("./*.sh", 0, NULL, &g);
722 for (i = 0; i < g.gl_pathc; i++)
723 proto_shell_add_script(g.gl_pathv[i]);