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 = 0;
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);
160 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
161 [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
162 [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
166 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
168 struct proto_shell_state *state;
169 struct blob_attr *tb[__NOTIFY_LAST];
172 state = container_of(proto, struct proto_shell_state, proto);
174 blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
175 if (!tb[NOTIFY_LINK_UP])
176 return UBUS_STATUS_INVALID_ARGUMENT;
178 up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
180 if (!tb[NOTIFY_IFNAME])
181 return UBUS_STATUS_INVALID_ARGUMENT;
183 device_add_user(&state->l3_dev,
184 device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
185 device_claim(&state->l3_dev);
186 state->proto.iface->l3_dev = &state->l3_dev;
187 state->proto.proto_event(&state->proto, IFPEV_UP);
189 state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
195 struct interface_proto_state *
196 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
197 struct blob_attr *attr)
199 struct proto_shell_state *state;
201 state = calloc(1, sizeof(*state));
202 state->config = malloc(blob_pad_len(attr));
206 memcpy(state->config, attr, blob_pad_len(attr));
207 state->proto.free = proto_shell_free;
208 state->proto.notify = proto_shell_notify;
209 state->proto.cb = proto_shell_handler;
210 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
211 state->setup_task.cb = proto_shell_setup_cb;
212 state->teardown_task.cb = proto_shell_teardown_cb;
213 state->handler = container_of(h, struct proto_shell_handler, proto);
215 return &state->proto;
223 check_type(json_object *obj, json_type type)
228 if (json_object_get_type(obj) != type)
234 static inline json_object *
235 get_field(json_object *obj, const char *name, json_type type)
237 return check_type(json_object_object_get(obj, name), type);
241 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
243 struct blobmsg_policy *attrs;
244 char *str_buf, *str_cur;
248 attrs = calloc(1, sizeof(*attrs));
252 config->n_params = json_object_array_length(obj);
253 config->params = attrs;
254 for (i = 0; i < config->n_params; i++) {
255 json_object *cur, *name, *type;
257 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
261 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
265 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
269 attrs[i].name = json_object_get_string(name);
270 attrs[i].type = json_object_get_int(type);
271 if (attrs[i].type > BLOBMSG_TYPE_LAST)
274 str_len += strlen(attrs[i].name + 1);
277 str_buf = malloc(str_len);
282 for (i = 0; i < config->n_params; i++) {
283 const char *name = attrs[i].name;
285 attrs[i].name = str_cur;
286 str_cur += sprintf(str_cur, "%s", name) + 1;
293 config->n_params = 0;
298 proto_shell_add_handler(const char *script, json_object *obj)
300 struct proto_shell_handler *handler;
301 struct proto_handler *proto;
302 json_object *config, *tmp;
306 if (!check_type(obj, json_type_object))
309 tmp = get_field(obj, "name", json_type_string);
313 name = json_object_get_string(tmp);
315 handler = calloc(1, sizeof(*handler) +
321 strcpy(handler->script_name, script);
323 str = handler->script_name + strlen(handler->script_name) + 1;
326 proto = &handler->proto;
328 proto->config_params = &handler->config;
329 proto->attach = proto_shell_attach;
331 tmp = get_field(obj, "no-device", json_type_boolean);
332 if (tmp && json_object_get_boolean(tmp))
333 handler->proto.flags |= PROTO_FLAG_NODEV;
335 config = get_field(obj, "config", json_type_array);
337 handler->config_buf = proto_shell_parse_config(&handler->config, config);
339 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
340 add_proto_handler(proto);
343 static void proto_shell_add_script(const char *name)
345 struct json_tokener *tok = NULL;
347 static char buf[512];
348 char *start, *end, *cmd;
352 #define DUMP_SUFFIX " '' dump"
354 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
355 sprintf(cmd, "%s" DUMP_SUFFIX, name);
362 buflen = fread(buf, 1, sizeof(buf) - 1, f);
369 end = memchr(start, '\n', len);
374 tok = json_tokener_new();
376 obj = json_tokener_parse_ex(tok, start, len);
377 if (!is_error(obj)) {
378 proto_shell_add_handler(name, obj);
379 json_object_put(obj);
380 json_tokener_free(tok);
386 len = buflen - (start - buf);
389 } while (!feof(f) && !ferror(f));
392 json_tokener_free(tok);
397 void __init proto_shell_init(void)
403 main_fd = open(".", O_RDONLY | O_DIRECTORY);
407 if (chdir(main_path)) {
408 perror("chdir(main path)");
412 if (chdir("./proto"))
415 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
419 glob("./*.sh", 0, NULL, &g);
420 for (i = 0; i < g.gl_pathc; i++)
421 proto_shell_add_script(g.gl_pathv[i]);