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 uloop_timeout setup_timeout;
33 struct uloop_process setup_task;
34 struct uloop_process teardown_task;
35 bool teardown_pending;
39 run_script(const char **argv, struct uloop_process *proc)
43 if ((pid = fork()) < 0)
48 execvp(argv[0], (char **) argv);
56 uloop_process_add(proc);
62 proto_shell_handler(struct interface_proto_state *proto,
63 enum interface_proto_cmd cmd, bool force)
65 struct proto_shell_state *state;
66 struct proto_shell_handler *handler;
67 struct uloop_process *proc;
73 state = container_of(proto, struct proto_shell_state, proto);
74 handler = state->handler;
76 if (cmd == PROTO_CMD_SETUP) {
78 proc = &state->setup_task;
81 proc = &state->teardown_task;
82 if (state->setup_task.pending) {
83 uloop_timeout_set(&state->setup_timeout, 1000);
84 kill(state->setup_task.pid, SIGINT);
85 state->teardown_pending = true;
90 config = blobmsg_format_json(state->config, true);
94 argv[i++] = handler->script_name;
95 argv[i++] = handler->proto.name;
97 argv[i++] = proto->iface->name;
99 if (proto->iface->main_dev.dev)
100 argv[i++] = proto->iface->main_dev.dev->ifname;
103 ret = run_script(argv, proc);
110 proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
112 struct proto_shell_state *state;
114 state = container_of(timeout, struct proto_shell_state, setup_timeout);
115 kill(state->setup_task.pid, SIGKILL);
119 proto_shell_setup_cb(struct uloop_process *p, int ret)
121 struct proto_shell_state *state;
123 state = container_of(p, struct proto_shell_state, setup_task);
124 uloop_timeout_cancel(&state->setup_timeout);
125 if (state->teardown_pending) {
126 state->teardown_pending = 0;
127 proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
132 proto_shell_teardown_cb(struct uloop_process *p, int ret)
134 struct proto_shell_state *state;
136 state = container_of(p, struct proto_shell_state, teardown_task);
137 state->proto.proto_event(&state->proto, IFPEV_DOWN);
141 proto_shell_free(struct interface_proto_state *proto)
143 struct proto_shell_state *state;
145 state = container_of(proto, struct proto_shell_state, proto);
150 struct interface_proto_state *
151 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
152 struct blob_attr *attr)
154 struct proto_shell_state *state;
156 state = calloc(1, sizeof(*state));
157 state->config = malloc(blob_pad_len(attr));
161 memcpy(state->config, attr, blob_pad_len(attr));
162 state->proto.free = proto_shell_free;
163 state->proto.cb = proto_shell_handler;
164 state->setup_timeout.cb = proto_shell_setup_timeout_cb;
165 state->setup_task.cb = proto_shell_setup_cb;
166 state->teardown_task.cb = proto_shell_teardown_cb;
167 state->handler = container_of(h, struct proto_shell_handler, proto);
169 return &state->proto;
177 check_type(json_object *obj, json_type type)
182 if (json_object_get_type(obj) != type)
188 static inline json_object *
189 get_field(json_object *obj, const char *name, json_type type)
191 return check_type(json_object_object_get(obj, name), type);
195 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
197 struct blobmsg_policy *attrs;
198 char *str_buf, *str_cur;
202 attrs = calloc(1, sizeof(*attrs));
206 config->n_params = json_object_array_length(obj);
207 config->params = attrs;
208 for (i = 0; i < config->n_params; i++) {
209 json_object *cur, *name, *type;
211 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
215 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
219 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
223 attrs[i].name = json_object_get_string(name);
224 attrs[i].type = json_object_get_int(type);
225 if (attrs[i].type > BLOBMSG_TYPE_LAST)
228 str_len += strlen(attrs[i].name + 1);
231 str_buf = malloc(str_len);
236 for (i = 0; i < config->n_params; i++) {
237 const char *name = attrs[i].name;
239 attrs[i].name = str_cur;
240 str_cur += sprintf(str_cur, "%s", name) + 1;
247 config->n_params = 0;
252 proto_shell_add_handler(const char *script, json_object *obj)
254 struct proto_shell_handler *handler;
255 struct proto_handler *proto;
256 json_object *config, *tmp;
260 if (!check_type(obj, json_type_object))
263 tmp = get_field(obj, "name", json_type_string);
267 name = json_object_get_string(tmp);
269 handler = calloc(1, sizeof(*handler) +
275 strcpy(handler->script_name, script);
277 str = handler->script_name + strlen(handler->script_name) + 1;
280 proto = &handler->proto;
282 proto->config_params = &handler->config;
283 proto->attach = proto_shell_attach;
285 tmp = get_field(obj, "no-device", json_type_boolean);
286 if (tmp && json_object_get_boolean(tmp))
287 handler->proto.flags |= PROTO_FLAG_NODEV;
289 config = get_field(obj, "config", json_type_array);
291 handler->config_buf = proto_shell_parse_config(&handler->config, config);
293 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
294 add_proto_handler(proto);
297 static void proto_shell_add_script(const char *name)
299 struct json_tokener *tok = NULL;
301 static char buf[512];
302 char *start, *end, *cmd;
306 #define DUMP_SUFFIX " '' dump"
308 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
309 sprintf(cmd, "%s" DUMP_SUFFIX, name);
316 buflen = fread(buf, 1, sizeof(buf) - 1, f);
323 end = memchr(start, '\n', len);
328 tok = json_tokener_new();
330 obj = json_tokener_parse_ex(tok, start, len);
331 if (!is_error(obj)) {
332 proto_shell_add_handler(name, obj);
333 json_object_put(obj);
334 json_tokener_free(tok);
340 len = buflen - (start - buf);
343 } while (!feof(f) && !ferror(f));
346 json_tokener_free(tok);
351 void __init proto_shell_init(void)
357 main_fd = open(".", O_RDONLY | O_DIRECTORY);
361 if (chdir(main_path)) {
362 perror("chdir(main path)");
366 if (chdir("./proto"))
369 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
373 glob("./*.sh", 0, NULL, &g);
374 for (i = 0; i < g.gl_pathc; i++)
375 proto_shell_add_script(g.gl_pathv[i]);