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_set_down(struct proto_shell_state *state)
66 if (!state->l3_dev.dev)
69 device_remove_user(&state->l3_dev);
73 proto_shell_handler(struct interface_proto_state *proto,
74 enum interface_proto_cmd cmd, bool force)
76 struct proto_shell_state *state;
77 struct proto_shell_handler *handler;
78 struct uloop_process *proc;
84 state = container_of(proto, struct proto_shell_state, proto);
85 handler = state->handler;
87 if (cmd == PROTO_CMD_SETUP) {
89 proc = &state->setup_task;
92 proc = &state->teardown_task;
93 if (state->setup_task.pending) {
94 uloop_timeout_set(&state->setup_timeout, 1000);
95 kill(state->setup_task.pid, SIGINT);
96 state->teardown_pending = true;
101 config = blobmsg_format_json(state->config, true);
105 argv[i++] = handler->script_name;
106 argv[i++] = handler->proto.name;
108 argv[i++] = proto->iface->name;
110 if (proto->iface->main_dev.dev)
111 argv[i++] = proto->iface->main_dev.dev->ifname;
114 ret = run_script(argv, proc);
121 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
123 struct proto_shell_state *state;
125 state = container_of(timeout, struct proto_shell_state, setup_timeout);
126 kill(state->setup_task.pid, SIGKILL);
130 proto_shell_setup_cb(struct uloop_process *p, int ret)
132 struct proto_shell_state *state;
134 state = container_of(p, struct proto_shell_state, setup_task);
135 uloop_timeout_cancel(&state->setup_timeout);
136 if (state->teardown_pending) {
137 state->teardown_pending = 0;
138 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
143 proto_shell_teardown_cb(struct uloop_process *p, int ret)
145 struct proto_shell_state *state;
147 state = container_of(p, struct proto_shell_state, teardown_task);
148 proto_shell_set_down(state);
149 state->proto.proto_event(&state->proto, IFPEV_DOWN);
153 proto_shell_free(struct interface_proto_state *proto)
155 struct proto_shell_state *state;
157 state = container_of(proto, struct proto_shell_state, proto);
168 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
169 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
170 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
174 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
176 struct proto_shell_state *state;
177 struct blob_attr *tb[__NOTIFY_LAST];
180 state = container_of(proto, struct proto_shell_state, proto);
182 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
183 if (!tb[NOTIFY_LINK_UP])
184 return UBUS_STATUS_INVALID_ARGUMENT;
186 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
188 if (!tb[NOTIFY_IFNAME])
189 return UBUS_STATUS_INVALID_ARGUMENT;
191 device_add_user(&state->l3_dev,
192 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
193 device_claim(&state->l3_dev);
194 state->proto.iface->l3_dev = &state->l3_dev;
195 state->proto.proto_event(&state->proto, IFPEV_UP);
197 proto_shell_set_down(state);
203 struct interface_proto_state *
204 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
205 struct blob_attr *attr)
207 struct proto_shell_state *state;
209 state = calloc(1, sizeof(*state));
210 state->config = malloc(blob_pad_len(attr));
214 memcpy(state->config, attr, blob_pad_len(attr));
215 state->proto.free = proto_shell_free;
216 state->proto.notify = proto_shell_notify;
217 state->proto.cb = proto_shell_handler;
218 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
219 state->setup_task.cb = proto_shell_setup_cb;
220 state->teardown_task.cb = proto_shell_teardown_cb;
221 state->handler = container_of(h, struct proto_shell_handler, proto);
223 return &state->proto;
231 check_type(json_object *obj, json_type type)
236 if (json_object_get_type(obj) != type)
242 static inline json_object *
243 get_field(json_object *obj, const char *name, json_type type)
245 return check_type(json_object_object_get(obj, name), type);
249 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
251 struct blobmsg_policy *attrs;
252 char *str_buf, *str_cur;
256 attrs = calloc(1, sizeof(*attrs));
260 config->n_params = json_object_array_length(obj);
261 config->params = attrs;
262 for (i = 0; i < config->n_params; i++) {
263 json_object *cur, *name, *type;
265 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
269 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
273 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
277 attrs[i].name = json_object_get_string(name);
278 attrs[i].type = json_object_get_int(type);
279 if (attrs[i].type > BLOBMSG_TYPE_LAST)
282 str_len += strlen(attrs[i].name + 1);
285 str_buf = malloc(str_len);
290 for (i = 0; i < config->n_params; i++) {
291 const char *name = attrs[i].name;
293 attrs[i].name = str_cur;
294 str_cur += sprintf(str_cur, "%s", name) + 1;
301 config->n_params = 0;
306 proto_shell_add_handler(const char *script, json_object *obj)
308 struct proto_shell_handler *handler;
309 struct proto_handler *proto;
310 json_object *config, *tmp;
314 if (!check_type(obj, json_type_object))
317 tmp = get_field(obj, "name", json_type_string);
321 name = json_object_get_string(tmp);
323 handler = calloc(1, sizeof(*handler) +
329 strcpy(handler->script_name, script);
331 str = handler->script_name + strlen(handler->script_name) + 1;
334 proto = &handler->proto;
336 proto->config_params = &handler->config;
337 proto->attach = proto_shell_attach;
339 tmp = get_field(obj, "no-device", json_type_boolean);
340 if (tmp && json_object_get_boolean(tmp))
341 handler->proto.flags |= PROTO_FLAG_NODEV;
343 config = get_field(obj, "config", json_type_array);
345 handler->config_buf = proto_shell_parse_config(&handler->config, config);
347 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
348 add_proto_handler(proto);
351 static void proto_shell_add_script(const char *name)
353 struct json_tokener *tok = NULL;
355 static char buf[512];
356 char *start, *end, *cmd;
360 #define DUMP_SUFFIX " '' dump"
362 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
363 sprintf(cmd, "%s" DUMP_SUFFIX, name);
370 buflen = fread(buf, 1, sizeof(buf) - 1, f);
377 end = memchr(start, '\n', len);
382 tok = json_tokener_new();
384 obj = json_tokener_parse_ex(tok, start, len);
385 if (!is_error(obj)) {
386 proto_shell_add_handler(name, obj);
387 json_object_put(obj);
388 json_tokener_free(tok);
394 len = buflen - (start - buf);
397 } while (!feof(f) && !ferror(f));
400 json_tokener_free(tok);
405 void __init proto_shell_init(void)
411 main_fd = open(".", O_RDONLY | O_DIRECTORY);
415 if (chdir(main_path)) {
416 perror("chdir(main path)");
420 if (chdir("./proto"))
423 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
427 glob("./*.sh", 0, NULL, &g);
428 for (i = 0; i < g.gl_pathc; i++)
429 proto_shell_add_script(g.gl_pathv[i]);