9 #include <libubox/blobmsg_json.h>
12 #include "interface.h"
13 #include "interface-ip.h"
18 struct proto_shell_handler {
19 struct list_head list;
20 struct proto_handler proto;
21 struct config_param_list config;
26 struct proto_shell_state {
27 struct interface_proto_state proto;
28 struct proto_shell_handler *handler;
29 struct blob_attr *config;
31 struct device_user l3_dev;
33 struct uloop_timeout setup_timeout;
34 struct uloop_process setup_task;
35 struct uloop_process teardown_task;
36 bool teardown_pending;
40 run_script(const char **argv, struct uloop_process *proc)
44 if ((pid = fork()) < 0)
49 execvp(argv[0], (char **) argv);
57 uloop_process_add(proc);
63 proto_shell_handler(struct interface_proto_state *proto,
64 enum interface_proto_cmd cmd, bool force)
66 struct proto_shell_state *state;
67 struct proto_shell_handler *handler;
68 struct uloop_process *proc;
74 state = container_of(proto, struct proto_shell_state, proto);
75 handler = state->handler;
77 if (cmd == PROTO_CMD_SETUP) {
79 proc = &state->setup_task;
82 proc = &state->teardown_task;
83 if (state->setup_task.pending) {
84 uloop_timeout_set(&state->setup_timeout, 1000);
85 kill(state->setup_task.pid, SIGINT);
86 state->teardown_pending = true;
91 config = blobmsg_format_json(state->config, true);
95 argv[i++] = handler->script_name;
96 argv[i++] = handler->proto.name;
98 argv[i++] = proto->iface->name;
100 if (proto->iface->main_dev.dev)
101 argv[i++] = proto->iface->main_dev.dev->ifname;
104 ret = run_script(argv, proc);
111 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
113 struct proto_shell_state *state;
115 state = container_of(timeout, struct proto_shell_state, setup_timeout);
116 kill(state->setup_task.pid, SIGKILL);
120 proto_shell_setup_cb(struct uloop_process *p, int ret)
122 struct proto_shell_state *state;
124 state = container_of(p, struct proto_shell_state, setup_task);
125 uloop_timeout_cancel(&state->setup_timeout);
126 if (state->teardown_pending) {
127 state->teardown_pending = false;
128 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
133 proto_shell_teardown_cb(struct uloop_process *p, int ret)
135 struct proto_shell_state *state;
137 state = container_of(p, struct proto_shell_state, teardown_task);
138 state->proto.proto_event(&state->proto, IFPEV_DOWN);
139 if (state->l3_dev.dev)
140 device_remove_user(&state->l3_dev);
144 proto_shell_free(struct interface_proto_state *proto)
146 struct proto_shell_state *state;
148 state = container_of(proto, struct proto_shell_state, proto);
154 proto_shell_parse_addr_list(struct interface *iface, struct blob_attr *attr,
155 bool v6, bool external)
157 struct device_addr *addr;
158 struct blob_attr *cur;
161 blobmsg_for_each_attr(cur, attr, rem) {
162 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
163 DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur));
167 addr = proto_parse_ip_addr_string(blobmsg_data(cur), v6, v6 ? 32 : 128);
169 DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur));
174 addr->flags |= DEVADDR_EXTERNAL;
176 vlist_add(&iface->proto_addr, &addr->node);
190 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
191 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
192 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
193 [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
194 [NOTIFY_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
195 [NOTIFY_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
199 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
201 struct proto_shell_state *state;
202 struct blob_attr *tb[__NOTIFY_LAST], *cur;
203 bool addr_ext = false;
206 state = container_of(proto, struct proto_shell_state, proto);
208 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
209 if (!tb[NOTIFY_LINK_UP])
210 return UBUS_STATUS_INVALID_ARGUMENT;
212 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
214 if (!tb[NOTIFY_IFNAME])
215 return UBUS_STATUS_INVALID_ARGUMENT;
217 if (!state->l3_dev.dev) {
218 device_add_user(&state->l3_dev,
219 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
220 device_claim(&state->l3_dev);
221 state->proto.iface->l3_dev = &state->l3_dev;
223 state->proto.proto_event(&state->proto, IFPEV_UP);
225 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
228 if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL)
229 addr_ext = blobmsg_get_bool(cur);
231 if ((cur = tb[NOTIFY_IPADDR]) != NULL)
232 proto_shell_parse_addr_list(state->proto.iface, cur, false, addr_ext);
234 if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
235 proto_shell_parse_addr_list(state->proto.iface, cur, true, addr_ext);
240 struct interface_proto_state *
241 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
242 struct blob_attr *attr)
244 struct proto_shell_state *state;
246 state = calloc(1, sizeof(*state));
247 state->config = malloc(blob_pad_len(attr));
251 memcpy(state->config, attr, blob_pad_len(attr));
252 state->proto.free = proto_shell_free;
253 state->proto.notify = proto_shell_notify;
254 state->proto.cb = proto_shell_handler;
255 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
256 state->setup_task.cb = proto_shell_setup_cb;
257 state->teardown_task.cb = proto_shell_teardown_cb;
258 state->handler = container_of(h, struct proto_shell_handler, proto);
260 return &state->proto;
268 check_type(json_object *obj, json_type type)
273 if (json_object_get_type(obj) != type)
279 static inline json_object *
280 get_field(json_object *obj, const char *name, json_type type)
282 return check_type(json_object_object_get(obj, name), type);
286 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
288 struct blobmsg_policy *attrs;
289 char *str_buf, *str_cur;
293 attrs = calloc(1, sizeof(*attrs));
297 config->n_params = json_object_array_length(obj);
298 config->params = attrs;
299 for (i = 0; i < config->n_params; i++) {
300 json_object *cur, *name, *type;
302 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
306 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
310 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
314 attrs[i].name = json_object_get_string(name);
315 attrs[i].type = json_object_get_int(type);
316 if (attrs[i].type > BLOBMSG_TYPE_LAST)
319 str_len += strlen(attrs[i].name + 1);
322 str_buf = malloc(str_len);
327 for (i = 0; i < config->n_params; i++) {
328 const char *name = attrs[i].name;
330 attrs[i].name = str_cur;
331 str_cur += sprintf(str_cur, "%s", name) + 1;
338 config->n_params = 0;
343 proto_shell_add_handler(const char *script, json_object *obj)
345 struct proto_shell_handler *handler;
346 struct proto_handler *proto;
347 json_object *config, *tmp;
351 if (!check_type(obj, json_type_object))
354 tmp = get_field(obj, "name", json_type_string);
358 name = json_object_get_string(tmp);
360 handler = calloc(1, sizeof(*handler) +
366 strcpy(handler->script_name, script);
368 str = handler->script_name + strlen(handler->script_name) + 1;
371 proto = &handler->proto;
373 proto->config_params = &handler->config;
374 proto->attach = proto_shell_attach;
376 tmp = get_field(obj, "no-device", json_type_boolean);
377 if (tmp && json_object_get_boolean(tmp))
378 handler->proto.flags |= PROTO_FLAG_NODEV;
380 config = get_field(obj, "config", json_type_array);
382 handler->config_buf = proto_shell_parse_config(&handler->config, config);
384 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
385 add_proto_handler(proto);
388 static void proto_shell_add_script(const char *name)
390 struct json_tokener *tok = NULL;
392 static char buf[512];
393 char *start, *end, *cmd;
397 #define DUMP_SUFFIX " '' dump"
399 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
400 sprintf(cmd, "%s" DUMP_SUFFIX, name);
407 buflen = fread(buf, 1, sizeof(buf) - 1, f);
414 end = memchr(start, '\n', len);
419 tok = json_tokener_new();
421 obj = json_tokener_parse_ex(tok, start, len);
422 if (!is_error(obj)) {
423 proto_shell_add_handler(name, obj);
424 json_object_put(obj);
425 json_tokener_free(tok);
431 len = buflen - (start - buf);
434 } while (!feof(f) && !ferror(f));
437 json_tokener_free(tok);
442 void __init proto_shell_init(void)
448 main_fd = open(".", O_RDONLY | O_DIRECTORY);
452 if (chdir(main_path)) {
453 perror("chdir(main path)");
457 if (chdir("./proto"))
460 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
464 glob("./*.sh", 0, NULL, &g);
465 for (i = 0; i < g.gl_pathc; i++)
466 proto_shell_add_script(g.gl_pathv[i]);