9 #include <libubox/blobmsg_json.h>
12 #include "interface.h"
13 #include "interface-ip.h"
16 static LIST_HEAD(handlers);
19 struct proto_shell_handler {
20 struct list_head list;
21 struct proto_handler proto;
22 struct config_param_list config;
27 struct proto_shell_state {
28 struct interface_proto_state proto;
29 struct proto_shell_handler *handler;
30 struct blob_attr *config;
32 struct device_user l3_dev;
34 struct uloop_timeout setup_timeout;
35 struct uloop_process setup_task;
36 struct uloop_process teardown_task;
37 bool teardown_pending;
41 run_script(const char **argv, struct uloop_process *proc)
45 if ((pid = fork()) < 0)
50 execvp(argv[0], (char **) argv);
58 uloop_process_add(proc);
64 proto_shell_handler(struct interface_proto_state *proto,
65 enum interface_proto_cmd cmd, bool force)
67 struct proto_shell_state *state;
68 struct proto_shell_handler *handler;
69 struct uloop_process *proc;
75 state = container_of(proto, struct proto_shell_state, proto);
76 handler = state->handler;
78 if (cmd == PROTO_CMD_SETUP) {
80 proc = &state->setup_task;
83 proc = &state->teardown_task;
84 if (state->setup_task.pending) {
85 uloop_timeout_set(&state->setup_timeout, 1000);
86 kill(state->setup_task.pid, SIGINT);
87 state->teardown_pending = true;
92 config = blobmsg_format_json(state->config, true);
96 argv[i++] = handler->script_name;
97 argv[i++] = handler->proto.name;
99 argv[i++] = proto->iface->name;
101 if (proto->iface->main_dev.dev)
102 argv[i++] = proto->iface->main_dev.dev->ifname;
105 ret = run_script(argv, proc);
112 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
114 struct proto_shell_state *state;
116 state = container_of(timeout, struct proto_shell_state, setup_timeout);
117 kill(state->setup_task.pid, SIGKILL);
121 proto_shell_setup_cb(struct uloop_process *p, int ret)
123 struct proto_shell_state *state;
125 state = container_of(p, struct proto_shell_state, setup_task);
126 uloop_timeout_cancel(&state->setup_timeout);
127 if (state->teardown_pending) {
128 state->teardown_pending = false;
129 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
134 proto_shell_teardown_cb(struct uloop_process *p, int ret)
136 struct proto_shell_state *state;
138 state = container_of(p, struct proto_shell_state, teardown_task);
139 state->proto.proto_event(&state->proto, IFPEV_DOWN);
140 if (state->l3_dev.dev)
141 device_remove_user(&state->l3_dev);
145 proto_shell_free(struct interface_proto_state *proto)
147 struct proto_shell_state *state;
149 state = container_of(proto, struct proto_shell_state, proto);
155 proto_shell_parse_addr_list(struct interface *iface, struct blob_attr *attr,
156 bool v6, bool external)
158 struct device_addr *addr;
159 struct blob_attr *cur;
162 blobmsg_for_each_attr(cur, attr, rem) {
163 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
164 DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur));
168 addr = proto_parse_ip_addr_string(blobmsg_data(cur), v6, v6 ? 32 : 128);
170 DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur));
175 addr->flags |= DEVADDR_EXTERNAL;
177 vlist_add(&iface->proto_addr, &addr->node);
191 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
192 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
193 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
194 [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
195 [NOTIFY_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
196 [NOTIFY_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
200 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
202 struct proto_shell_state *state;
203 struct blob_attr *tb[__NOTIFY_LAST], *cur;
204 bool addr_ext = false;
207 state = container_of(proto, struct proto_shell_state, proto);
209 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
210 if (!tb[NOTIFY_LINK_UP])
211 return UBUS_STATUS_INVALID_ARGUMENT;
213 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
215 if (!tb[NOTIFY_IFNAME])
216 return UBUS_STATUS_INVALID_ARGUMENT;
218 if (!state->l3_dev.dev) {
219 device_add_user(&state->l3_dev,
220 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
221 device_claim(&state->l3_dev);
222 state->proto.iface->l3_dev = &state->l3_dev;
224 state->proto.proto_event(&state->proto, IFPEV_UP);
226 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
229 if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL)
230 addr_ext = blobmsg_get_bool(cur);
232 if ((cur = tb[NOTIFY_IPADDR]) != NULL)
233 proto_shell_parse_addr_list(state->proto.iface, cur, false, addr_ext);
235 if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
236 proto_shell_parse_addr_list(state->proto.iface, cur, true, addr_ext);
241 struct interface_proto_state *
242 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
243 struct blob_attr *attr)
245 struct proto_shell_state *state;
247 state = calloc(1, sizeof(*state));
248 state->config = malloc(blob_pad_len(attr));
252 memcpy(state->config, attr, blob_pad_len(attr));
253 state->proto.free = proto_shell_free;
254 state->proto.notify = proto_shell_notify;
255 state->proto.cb = proto_shell_handler;
256 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
257 state->setup_task.cb = proto_shell_setup_cb;
258 state->teardown_task.cb = proto_shell_teardown_cb;
259 state->handler = container_of(h, struct proto_shell_handler, proto);
261 return &state->proto;
269 check_type(json_object *obj, json_type type)
274 if (json_object_get_type(obj) != type)
280 static inline json_object *
281 get_field(json_object *obj, const char *name, json_type type)
283 return check_type(json_object_object_get(obj, name), type);
287 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
289 struct blobmsg_policy *attrs;
290 char *str_buf, *str_cur;
294 attrs = calloc(1, sizeof(*attrs));
298 config->n_params = json_object_array_length(obj);
299 config->params = attrs;
300 for (i = 0; i < config->n_params; i++) {
301 json_object *cur, *name, *type;
303 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
307 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
311 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
315 attrs[i].name = json_object_get_string(name);
316 attrs[i].type = json_object_get_int(type);
317 if (attrs[i].type > BLOBMSG_TYPE_LAST)
320 str_len += strlen(attrs[i].name + 1);
323 str_buf = malloc(str_len);
328 for (i = 0; i < config->n_params; i++) {
329 const char *name = attrs[i].name;
331 attrs[i].name = str_cur;
332 str_cur += sprintf(str_cur, "%s", name) + 1;
339 config->n_params = 0;
344 proto_shell_add_handler(const char *script, json_object *obj)
346 struct proto_shell_handler *handler;
347 struct proto_handler *proto;
348 json_object *config, *tmp;
352 if (!check_type(obj, json_type_object))
355 tmp = get_field(obj, "name", json_type_string);
359 name = json_object_get_string(tmp);
361 handler = calloc(1, sizeof(*handler) +
367 strcpy(handler->script_name, script);
369 str = handler->script_name + strlen(handler->script_name) + 1;
372 proto = &handler->proto;
374 proto->config_params = &handler->config;
375 proto->attach = proto_shell_attach;
377 tmp = get_field(obj, "no-device", json_type_boolean);
378 if (tmp && json_object_get_boolean(tmp))
379 handler->proto.flags |= PROTO_FLAG_NODEV;
381 config = get_field(obj, "config", json_type_array);
383 handler->config_buf = proto_shell_parse_config(&handler->config, config);
385 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
386 add_proto_handler(proto);
389 static void proto_shell_add_script(const char *name)
391 struct json_tokener *tok = NULL;
393 static char buf[512];
394 char *start, *end, *cmd;
398 #define DUMP_SUFFIX " '' dump"
400 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
401 sprintf(cmd, "%s" DUMP_SUFFIX, name);
408 buflen = fread(buf, 1, sizeof(buf) - 1, f);
415 end = memchr(start, '\n', len);
420 tok = json_tokener_new();
422 obj = json_tokener_parse_ex(tok, start, len);
423 if (!is_error(obj)) {
424 proto_shell_add_handler(name, obj);
425 json_object_put(obj);
426 json_tokener_free(tok);
432 len = buflen - (start - buf);
435 } while (!feof(f) && !ferror(f));
438 json_tokener_free(tok);
443 void __init proto_shell_init(void)
449 main_fd = open(".", O_RDONLY | O_DIRECTORY);
453 if (chdir(main_path)) {
454 perror("chdir(main path)");
458 if (chdir("./proto"))
461 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
465 glob("./*.sh", 0, NULL, &g);
466 for (i = 0; i < g.gl_pathc; i++)
467 proto_shell_add_script(g.gl_pathv[i]);