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;
23 struct proto_shell_handler {
24 struct list_head list;
25 struct proto_handler proto;
26 struct config_param_list config;
32 struct proto_shell_state {
33 struct interface_proto_state proto;
34 struct proto_shell_handler *handler;
35 struct blob_attr *config;
37 struct device_user l3_dev;
39 struct uloop_timeout setup_timeout;
40 struct netifd_process setup_task;
41 struct netifd_process teardown_task;
42 bool teardown_pending;
43 bool teardown_wait_task;
45 struct netifd_process proto_task;
50 proto_shell_handler(struct interface_proto_state *proto,
51 enum interface_proto_cmd cmd, bool force)
53 struct proto_shell_state *state;
54 struct proto_shell_handler *handler;
55 struct netifd_process *proc;
56 static char error_buf[32];
61 int ret, i = 0, j = 0;
63 state = container_of(proto, struct proto_shell_state, proto);
64 handler = state->handler;
66 if (cmd == PROTO_CMD_SETUP) {
68 proc = &state->setup_task;
69 state->last_error = -1;
72 proc = &state->teardown_task;
73 if (state->setup_task.uloop.pending && !state->teardown_wait_task) {
74 uloop_timeout_set(&state->setup_timeout, 1000);
75 kill(state->setup_task.uloop.pid, SIGTERM);
76 state->teardown_pending = true;
79 if (state->last_error >= 0) {
80 snprintf(error_buf, sizeof(error_buf), "ERROR=%d", state->last_error);
81 envp[j++] = error_buf;
85 config = blobmsg_format_json(state->config, true);
89 argv[i++] = handler->script_name;
90 argv[i++] = handler->proto.name;
92 argv[i++] = proto->iface->name;
94 if (proto->iface->main_dev.dev)
95 argv[i++] = proto->iface->main_dev.dev->ifname;
99 ret = netifd_start_process(argv, envp, proc);
106 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
108 struct proto_shell_state *state;
110 state = container_of(timeout, struct proto_shell_state, setup_timeout);
111 kill(state->setup_task.uloop.pid, SIGKILL);
115 proto_shell_setup_cb(struct netifd_process *p, int ret)
117 struct proto_shell_state *state;
119 state = container_of(p, struct proto_shell_state, setup_task);
120 uloop_timeout_cancel(&state->setup_timeout);
121 if (state->teardown_pending) {
122 state->teardown_pending = false;
123 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
128 proto_shell_teardown_cb(struct netifd_process *p, int ret)
130 struct proto_shell_state *state;
132 state = container_of(p, struct proto_shell_state, teardown_task);
134 if (state->teardown_wait_task)
137 netifd_kill_process(&state->proto_task);
138 state->proto.proto_event(&state->proto, IFPEV_DOWN);
142 proto_shell_task_cb(struct netifd_process *p, int ret)
144 struct proto_shell_state *state;
145 bool teardown_wait_task;
147 state = container_of(p, struct proto_shell_state, proto_task);
149 teardown_wait_task = state->teardown_wait_task;
150 state->teardown_wait_task = false;
151 if (state->teardown_pending || state->teardown_task.uloop.pending)
154 if (teardown_wait_task) {
155 proto_shell_teardown_cb(&state->teardown_task, 0);
159 state->last_error = WEXITSTATUS(ret);
160 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
161 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
165 proto_shell_free(struct interface_proto_state *proto)
167 struct proto_shell_state *state;
169 state = container_of(proto, struct proto_shell_state, proto);
175 proto_shell_parse_addr_list(struct interface_ip_settings *ip, struct blob_attr *attr,
176 bool v6, bool external)
178 struct device_addr *addr;
179 struct blob_attr *cur;
182 blobmsg_for_each_attr(cur, attr, rem) {
183 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
184 DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur));
188 addr = proto_parse_ip_addr_string(blobmsg_data(cur), v6, v6 ? 32 : 128);
190 DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur));
195 addr->flags |= DEVADDR_EXTERNAL;
197 vlist_add(&ip->addr, &addr->node);
202 proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
205 struct blob_attr *cur;
208 blobmsg_for_each_attr(cur, attr, rem) {
209 if (blobmsg_type(cur) != BLOBMSG_TYPE_TABLE) {
210 DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur));
214 interface_ip_add_route(iface, cur, v6);
237 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
238 [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
239 [NOTIFY_ERROR] = { .name = "error", .type = BLOBMSG_TYPE_ARRAY },
240 [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
241 [NOTIFY_ENV] = { .name = "env", .type = BLOBMSG_TYPE_ARRAY },
242 [NOTIFY_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
243 [NOTIFY_AVAILABLE] = { .name = "available", .type = BLOBMSG_TYPE_BOOL },
244 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
245 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
246 [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
247 [NOTIFY_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
248 [NOTIFY_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
249 [NOTIFY_ROUTES] = { .name = "routes", .type = BLOBMSG_TYPE_ARRAY },
250 [NOTIFY_ROUTES6] = { .name = "routes6", .type = BLOBMSG_TYPE_ARRAY },
251 [NOTIFY_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
252 [NOTIFY_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
256 proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
258 struct interface_ip_settings *ip;
259 struct blob_attr *cur;
261 bool addr_ext = false;
264 if (!tb[NOTIFY_LINK_UP])
265 return UBUS_STATUS_INVALID_ARGUMENT;
267 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
269 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
273 if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL) {
274 addr_ext = blobmsg_get_bool(cur);
279 if (!tb[NOTIFY_IFNAME]) {
280 if (!state->proto.iface->main_dev.dev)
281 return UBUS_STATUS_INVALID_ARGUMENT;
283 if (state->l3_dev.dev)
284 device_remove_user(&state->l3_dev);
286 device_add_user(&state->l3_dev,
287 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), dev_create));
288 state->proto.iface->l3_dev = &state->l3_dev;
289 device_claim(&state->l3_dev);
292 ip = &state->proto.iface->proto_ip;
293 interface_update_start(state->proto.iface);
295 if ((cur = tb[NOTIFY_IPADDR]) != NULL)
296 proto_shell_parse_addr_list(ip, cur, false, addr_ext);
298 if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
299 proto_shell_parse_addr_list(ip, cur, true, addr_ext);
301 if ((cur = tb[NOTIFY_ROUTES]) != NULL)
302 proto_shell_parse_route_list(state->proto.iface, cur, false);
304 if ((cur = tb[NOTIFY_ROUTES6]) != NULL)
305 proto_shell_parse_route_list(state->proto.iface, cur, true);
307 if ((cur = tb[NOTIFY_DNS]) != NULL)
308 interface_add_dns_server_list(ip, cur);
310 if ((cur = tb[NOTIFY_DNS_SEARCH]) != NULL)
311 interface_add_dns_search_list(ip, cur);
313 interface_update_complete(state->proto.iface);
315 state->proto.proto_event(&state->proto, IFPEV_UP);
321 fill_string_list(struct blob_attr *attr, char **argv, int max)
323 struct blob_attr *cur;
330 blobmsg_for_each_attr(cur, attr, rem) {
331 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
334 if (!blobmsg_check_attr(cur, NULL))
337 argv[argc++] = blobmsg_data(cur);
348 proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
350 static char *argv[64];
351 static char *env[32];
353 if (!tb[NOTIFY_COMMAND])
356 if (!fill_string_list(tb[NOTIFY_COMMAND], argv, ARRAY_SIZE(argv)))
359 if (!fill_string_list(tb[NOTIFY_ENV], env, ARRAY_SIZE(env)))
362 netifd_start_process((const char **) argv, (char **) env, &state->proto_task);
367 return UBUS_STATUS_INVALID_ARGUMENT;
371 proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
373 unsigned int signal = ~0;
375 if (tb[NOTIFY_SIGNAL])
376 signal = blobmsg_get_u32(tb[NOTIFY_SIGNAL]);
381 if (state->proto_task.uloop.pending) {
382 kill(state->proto_task.uloop.pid, signal);
383 state->teardown_wait_task = true;
390 proto_shell_notify_error(struct proto_shell_state *state, struct blob_attr **tb)
392 struct blob_attr *cur;
397 if (!tb[NOTIFY_ERROR])
398 return UBUS_STATUS_INVALID_ARGUMENT;
400 blobmsg_for_each_attr(cur, tb[NOTIFY_ERROR], rem) {
401 if (n_data + 1 == ARRAY_SIZE(data))
404 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
407 if (!blobmsg_check_attr(cur, NULL))
410 data[n_data++] = blobmsg_data(cur);
416 interface_add_error(state->proto.iface, state->handler->proto.name,
417 data[0], (const char **) &data[1], n_data - 1);
422 return UBUS_STATUS_INVALID_ARGUMENT;
426 proto_shell_block_restart(struct proto_shell_state *state, struct blob_attr **tb)
428 state->proto.iface->autostart = false;
433 proto_shell_set_available(struct proto_shell_state *state, struct blob_attr **tb)
435 if (!tb[NOTIFY_AVAILABLE])
436 return UBUS_STATUS_INVALID_ARGUMENT;
438 interface_set_available(state->proto.iface, blobmsg_get_bool(tb[NOTIFY_AVAILABLE]));
443 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
445 struct proto_shell_state *state;
446 struct blob_attr *tb[__NOTIFY_LAST];
448 state = container_of(proto, struct proto_shell_state, proto);
450 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
451 if (!tb[NOTIFY_ACTION])
452 return UBUS_STATUS_INVALID_ARGUMENT;
454 switch(blobmsg_get_u32(tb[NOTIFY_ACTION])) {
456 return proto_shell_update_link(state, tb);
458 return proto_shell_run_command(state, tb);
460 return proto_shell_kill_command(state, tb);
462 return proto_shell_notify_error(state, tb);
464 return proto_shell_block_restart(state, tb);
466 return proto_shell_set_available(state, tb);
468 return UBUS_STATUS_INVALID_ARGUMENT;
472 static struct interface_proto_state *
473 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
474 struct blob_attr *attr)
476 struct proto_shell_state *state;
478 state = calloc(1, sizeof(*state));
479 state->config = malloc(blob_pad_len(attr));
483 memcpy(state->config, attr, blob_pad_len(attr));
484 state->proto.free = proto_shell_free;
485 state->proto.notify = proto_shell_notify;
486 state->proto.cb = proto_shell_handler;
487 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
488 state->setup_task.cb = proto_shell_setup_cb;
489 state->setup_task.dir_fd = proto_fd.fd;
490 state->setup_task.log_prefix = iface->name;
491 state->teardown_task.cb = proto_shell_teardown_cb;
492 state->teardown_task.dir_fd = proto_fd.fd;
493 state->teardown_task.log_prefix = iface->name;
494 state->proto_task.cb = proto_shell_task_cb;
495 state->proto_task.dir_fd = proto_fd.fd;
496 state->proto_task.log_prefix = iface->name;
497 state->handler = container_of(h, struct proto_shell_handler, proto);
499 return &state->proto;
507 check_type(json_object *obj, json_type type)
512 if (json_object_get_type(obj) != type)
518 static inline json_object *
519 get_field(json_object *obj, const char *name, json_type type)
521 return check_type(json_object_object_get(obj, name), type);
525 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
527 struct blobmsg_policy *attrs;
528 char *str_buf, *str_cur;
532 config->n_params = json_object_array_length(obj);
533 attrs = calloc(1, sizeof(*attrs) * config->n_params);
537 config->params = attrs;
538 for (i = 0; i < config->n_params; i++) {
539 json_object *cur, *name, *type;
541 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
545 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
549 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
553 attrs[i].name = json_object_get_string(name);
554 attrs[i].type = json_object_get_int(type);
555 if (attrs[i].type > BLOBMSG_TYPE_LAST)
558 str_len += strlen(attrs[i].name) + 1;
561 str_buf = malloc(str_len);
566 for (i = 0; i < config->n_params; i++) {
567 const char *name = attrs[i].name;
569 attrs[i].name = str_cur;
570 str_cur += sprintf(str_cur, "%s", name) + 1;
577 config->n_params = 0;
582 proto_shell_add_handler(const char *script, json_object *obj)
584 struct proto_shell_handler *handler;
585 struct proto_handler *proto;
586 json_object *config, *tmp;
590 if (!check_type(obj, json_type_object))
593 tmp = get_field(obj, "name", json_type_string);
597 name = json_object_get_string(tmp);
599 handler = calloc(1, sizeof(*handler) +
605 strcpy(handler->script_name, script);
607 str = handler->script_name + strlen(handler->script_name) + 1;
610 proto = &handler->proto;
612 proto->config_params = &handler->config;
613 proto->attach = proto_shell_attach;
615 tmp = get_field(obj, "no-device", json_type_boolean);
616 if (tmp && json_object_get_boolean(tmp))
617 handler->proto.flags |= PROTO_FLAG_NODEV;
619 tmp = get_field(obj, "available", json_type_boolean);
620 if (tmp && json_object_get_boolean(tmp))
621 handler->proto.flags |= PROTO_FLAG_INIT_AVAILABLE;
623 config = get_field(obj, "config", json_type_array);
625 handler->config_buf = proto_shell_parse_config(&handler->config, config);
627 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
628 add_proto_handler(proto);
631 static void proto_shell_add_script(const char *name)
633 struct json_tokener *tok = NULL;
635 static char buf[512];
640 #define DUMP_SUFFIX " '' dump"
642 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
643 sprintf(cmd, "%s" DUMP_SUFFIX, name);
650 start = fgets(buf, sizeof(buf), f);
657 tok = json_tokener_new();
659 obj = json_tokener_parse_ex(tok, start, len);
660 if (!is_error(obj)) {
661 proto_shell_add_handler(name, obj);
662 json_object_put(obj);
663 json_tokener_free(tok);
665 } else if (start[len - 1] == '\n') {
666 json_tokener_free(tok);
669 } while (!feof(f) && !ferror(f));
672 json_tokener_free(tok);
677 static void __init proto_shell_init(void)
683 main_fd = open(".", O_RDONLY | O_DIRECTORY);
687 if (chdir(main_path)) {
688 perror("chdir(main path)");
692 if (chdir("./proto"))
695 proto_fd.fd = open(".", O_RDONLY | O_DIRECTORY);
699 netifd_fd_add(&proto_fd);
700 glob("./*.sh", 0, NULL, &g);
701 for (i = 0; i < g.gl_pathc; i++)
702 proto_shell_add_script(g.gl_pathv[i]);