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;
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 netifd_process setup_task;
40 struct netifd_process teardown_task;
41 bool teardown_pending;
42 bool teardown_wait_task;
44 struct netifd_process proto_task;
48 proto_shell_handler(struct interface_proto_state *proto,
49 enum interface_proto_cmd cmd, bool force)
51 struct proto_shell_state *state;
52 struct proto_shell_handler *handler;
53 struct netifd_process *proc;
59 state = container_of(proto, struct proto_shell_state, proto);
60 handler = state->handler;
62 if (cmd == PROTO_CMD_SETUP) {
64 proc = &state->setup_task;
67 proc = &state->teardown_task;
68 if (state->setup_task.uloop.pending && !state->teardown_wait_task) {
69 uloop_timeout_set(&state->setup_timeout, 1000);
70 kill(state->setup_task.uloop.pid, SIGTERM);
71 state->teardown_pending = true;
76 config = blobmsg_format_json(state->config, true);
80 argv[i++] = handler->script_name;
81 argv[i++] = handler->proto.name;
83 argv[i++] = proto->iface->name;
85 if (proto->iface->main_dev.dev)
86 argv[i++] = proto->iface->main_dev.dev->ifname;
89 ret = netifd_start_process(argv, NULL, proc);
96 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
98 struct proto_shell_state *state;
100 state = container_of(timeout, struct proto_shell_state, setup_timeout);
101 kill(state->setup_task.uloop.pid, SIGKILL);
105 proto_shell_setup_cb(struct netifd_process *p, int ret)
107 struct proto_shell_state *state;
109 state = container_of(p, struct proto_shell_state, setup_task);
110 uloop_timeout_cancel(&state->setup_timeout);
111 if (state->teardown_pending) {
112 state->teardown_pending = false;
113 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
118 proto_shell_teardown_cb(struct netifd_process *p, int ret)
120 struct proto_shell_state *state;
122 state = container_of(p, struct proto_shell_state, teardown_task);
124 if (state->teardown_wait_task)
127 netifd_kill_process(&state->proto_task);
128 state->proto.proto_event(&state->proto, IFPEV_DOWN);
132 proto_shell_task_cb(struct netifd_process *p, int ret)
134 struct proto_shell_state *state;
135 bool teardown_wait_task;
137 state = container_of(p, struct proto_shell_state, proto_task);
139 teardown_wait_task = state->teardown_wait_task;
140 state->teardown_wait_task = false;
141 if (state->teardown_pending || state->teardown_task.uloop.pending)
144 if (teardown_wait_task) {
145 proto_shell_teardown_cb(&state->teardown_task, 0);
149 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
150 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
154 proto_shell_free(struct interface_proto_state *proto)
156 struct proto_shell_state *state;
158 state = container_of(proto, struct proto_shell_state, proto);
164 proto_shell_parse_addr_list(struct interface_ip_settings *ip, struct blob_attr *attr,
165 bool v6, bool external)
167 struct device_addr *addr;
168 struct blob_attr *cur;
171 blobmsg_for_each_attr(cur, attr, rem) {
172 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
173 DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur));
177 addr = proto_parse_ip_addr_string(blobmsg_data(cur), v6, v6 ? 32 : 128);
179 DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur));
184 addr->flags |= DEVADDR_EXTERNAL;
186 vlist_add(&ip->addr, &addr->node);
198 static const struct blobmsg_policy route_attr[__ROUTE_LAST] = {
199 [ROUTE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
200 [ROUTE_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
201 [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
202 [ROUTE_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
206 parse_route(struct interface_ip_settings *ip, struct blob_attr *attr, bool v6)
208 struct blob_attr *tb[__ROUTE_LAST], *cur;
209 struct device_route *route;
210 int af = v6 ? AF_INET6 : AF_INET;
212 blobmsg_parse(route_attr, __ROUTE_LAST, tb, blobmsg_data(attr), blobmsg_data_len(attr));
214 if (!tb[ROUTE_GATEWAY] && !tb[ROUTE_DEVICE])
217 route = calloc(1, sizeof(*route));
221 route->mask = v6 ? 128 : 32;
222 if ((cur = tb[ROUTE_MASK]) != NULL) {
223 route->mask = parse_netmask_string(blobmsg_data(cur), v6);
224 if (route->mask > (v6 ? 128 : 32))
228 if ((cur = tb[ROUTE_TARGET]) != NULL) {
229 if (!inet_pton(af, blobmsg_data(cur), &route->addr)) {
230 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur));
235 if ((cur = tb[ROUTE_GATEWAY]) != NULL) {
236 if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) {
237 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur));
242 if ((cur = tb[ROUTE_DEVICE]) != NULL)
243 route->device = device_get(blobmsg_data(cur), true);
245 vlist_add(&ip->route, &route->node);
253 proto_shell_parse_route_list(struct interface_ip_settings *ip, struct blob_attr *attr,
256 struct blob_attr *cur;
259 blobmsg_for_each_attr(cur, attr, rem) {
260 if (blobmsg_type(cur) != BLOBMSG_TYPE_TABLE) {
261 DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur));
265 parse_route(ip, cur, v6);
286 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
287 [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
288 [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
289 [NOTIFY_ENV] = { .name = "env", .type = BLOBMSG_TYPE_ARRAY },
290 [NOTIFY_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
291 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
292 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
293 [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
294 [NOTIFY_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
295 [NOTIFY_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
296 [NOTIFY_ROUTES] = { .name = "routes", .type = BLOBMSG_TYPE_ARRAY },
297 [NOTIFY_ROUTES6] = { .name = "routes6", .type = BLOBMSG_TYPE_ARRAY },
298 [NOTIFY_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
299 [NOTIFY_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
303 proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
305 struct interface_ip_settings *ip;
306 struct blob_attr *cur;
307 bool addr_ext = false;
310 if (!tb[NOTIFY_LINK_UP])
311 return UBUS_STATUS_INVALID_ARGUMENT;
313 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
315 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
319 if (!tb[NOTIFY_IFNAME]) {
320 if (!state->proto.iface->main_dev.dev)
321 return UBUS_STATUS_INVALID_ARGUMENT;
323 if (state->l3_dev.dev)
324 device_remove_user(&state->l3_dev);
326 device_add_user(&state->l3_dev,
327 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
328 state->proto.iface->l3_dev = &state->l3_dev;
329 device_claim(&state->l3_dev);
332 ip = &state->proto.iface->proto_ip;
333 interface_ip_update_start(ip);
335 if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL)
336 addr_ext = blobmsg_get_bool(cur);
338 if ((cur = tb[NOTIFY_IPADDR]) != NULL)
339 proto_shell_parse_addr_list(ip, cur, false, addr_ext);
341 if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
342 proto_shell_parse_addr_list(ip, cur, true, addr_ext);
344 if ((cur = tb[NOTIFY_ROUTES]) != NULL)
345 proto_shell_parse_route_list(ip, cur, false);
347 if ((cur = tb[NOTIFY_ROUTES6]) != NULL)
348 proto_shell_parse_route_list(ip, cur, true);
350 if ((cur = tb[NOTIFY_DNS]) != NULL)
351 interface_add_dns_server_list(ip, cur);
353 if ((cur = tb[NOTIFY_DNS_SEARCH]) != NULL)
354 interface_add_dns_search_list(ip, cur);
356 interface_ip_update_complete(ip);
358 state->proto.proto_event(&state->proto, IFPEV_UP);
364 fill_string_list(struct blob_attr *attr, char **argv, int max)
366 struct blob_attr *cur;
373 blobmsg_for_each_attr(cur, attr, rem) {
374 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
377 if (!blobmsg_check_attr(cur, NULL))
380 argv[argc++] = blobmsg_data(cur);
391 proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
396 if (!tb[NOTIFY_COMMAND])
399 if (!fill_string_list(tb[NOTIFY_COMMAND], argv, ARRAY_SIZE(argv)))
402 if (!fill_string_list(tb[NOTIFY_ENV], env, ARRAY_SIZE(env)))
405 netifd_start_process((const char **) argv, (char **) env, &state->proto_task);
410 return UBUS_STATUS_INVALID_ARGUMENT;
414 proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
416 unsigned int signal = ~0;
418 if (tb[NOTIFY_SIGNAL])
419 signal = blobmsg_get_u32(tb[NOTIFY_SIGNAL]);
424 if (state->proto_task.uloop.pending) {
425 kill(state->proto_task.uloop.pid, signal);
426 state->teardown_wait_task = true;
433 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
435 struct proto_shell_state *state;
436 struct blob_attr *tb[__NOTIFY_LAST];
438 state = container_of(proto, struct proto_shell_state, proto);
440 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
441 if (!tb[NOTIFY_ACTION])
442 return UBUS_STATUS_INVALID_ARGUMENT;
444 switch(blobmsg_get_u32(tb[NOTIFY_ACTION])) {
446 return proto_shell_update_link(state, tb);
448 return proto_shell_run_command(state, tb);
450 return proto_shell_kill_command(state, tb);
452 return UBUS_STATUS_INVALID_ARGUMENT;
456 struct interface_proto_state *
457 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
458 struct blob_attr *attr)
460 struct proto_shell_state *state;
462 state = calloc(1, sizeof(*state));
463 state->config = malloc(blob_pad_len(attr));
467 memcpy(state->config, attr, blob_pad_len(attr));
468 state->proto.free = proto_shell_free;
469 state->proto.notify = proto_shell_notify;
470 state->proto.cb = proto_shell_handler;
471 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
472 state->setup_task.cb = proto_shell_setup_cb;
473 state->setup_task.dir_fd = proto_fd.fd;
474 state->setup_task.log_prefix = iface->name;
475 state->teardown_task.cb = proto_shell_teardown_cb;
476 state->teardown_task.dir_fd = proto_fd.fd;
477 state->teardown_task.log_prefix = iface->name;
478 state->proto_task.cb = proto_shell_task_cb;
479 state->proto_task.dir_fd = proto_fd.fd;
480 state->proto_task.log_prefix = iface->name;
481 state->handler = container_of(h, struct proto_shell_handler, proto);
483 return &state->proto;
491 check_type(json_object *obj, json_type type)
496 if (json_object_get_type(obj) != type)
502 static inline json_object *
503 get_field(json_object *obj, const char *name, json_type type)
505 return check_type(json_object_object_get(obj, name), type);
509 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
511 struct blobmsg_policy *attrs;
512 char *str_buf, *str_cur;
516 config->n_params = json_object_array_length(obj);
517 attrs = calloc(1, sizeof(*attrs) * config->n_params);
521 config->params = attrs;
522 for (i = 0; i < config->n_params; i++) {
523 json_object *cur, *name, *type;
525 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
529 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
533 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
537 attrs[i].name = json_object_get_string(name);
538 attrs[i].type = json_object_get_int(type);
539 if (attrs[i].type > BLOBMSG_TYPE_LAST)
542 str_len += strlen(attrs[i].name) + 1;
545 str_buf = malloc(str_len);
550 for (i = 0; i < config->n_params; i++) {
551 const char *name = attrs[i].name;
553 attrs[i].name = str_cur;
554 str_cur += sprintf(str_cur, "%s", name) + 1;
561 config->n_params = 0;
566 proto_shell_add_handler(const char *script, json_object *obj)
568 struct proto_shell_handler *handler;
569 struct proto_handler *proto;
570 json_object *config, *tmp;
574 if (!check_type(obj, json_type_object))
577 tmp = get_field(obj, "name", json_type_string);
581 name = json_object_get_string(tmp);
583 handler = calloc(1, sizeof(*handler) +
589 strcpy(handler->script_name, script);
591 str = handler->script_name + strlen(handler->script_name) + 1;
594 proto = &handler->proto;
596 proto->config_params = &handler->config;
597 proto->attach = proto_shell_attach;
599 tmp = get_field(obj, "no-device", json_type_boolean);
600 if (tmp && json_object_get_boolean(tmp))
601 handler->proto.flags |= PROTO_FLAG_NODEV;
603 config = get_field(obj, "config", json_type_array);
605 handler->config_buf = proto_shell_parse_config(&handler->config, config);
607 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
608 add_proto_handler(proto);
611 static void proto_shell_add_script(const char *name)
613 struct json_tokener *tok = NULL;
615 static char buf[512];
616 char *start, *end, *cmd;
620 #define DUMP_SUFFIX " '' dump"
622 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
623 sprintf(cmd, "%s" DUMP_SUFFIX, name);
630 buflen = fread(buf, 1, sizeof(buf) - 1, f);
637 end = memchr(start, '\n', len);
642 tok = json_tokener_new();
644 obj = json_tokener_parse_ex(tok, start, len);
645 if (!is_error(obj)) {
646 proto_shell_add_handler(name, obj);
647 json_object_put(obj);
648 json_tokener_free(tok);
654 len = buflen - (start - buf);
657 } while (!feof(f) && !ferror(f));
660 json_tokener_free(tok);
665 void __init proto_shell_init(void)
671 main_fd = open(".", O_RDONLY | O_DIRECTORY);
675 if (chdir(main_path)) {
676 perror("chdir(main path)");
680 if (chdir("./proto"))
683 proto_fd.fd = open(".", O_RDONLY | O_DIRECTORY);
687 netifd_fd_add(&proto_fd);
688 glob("./*.sh", 0, NULL, &g);
689 for (i = 0; i < g.gl_pathc; i++)
690 proto_shell_add_script(g.gl_pathv[i]);