8 #include <libubox/blobmsg_json.h>
11 #include "interface.h"
12 #include "interface-ip.h"
15 static LIST_HEAD(handlers);
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;
32 static int run_script(const char **argv)
36 if ((pid = fork()) < 0)
41 execvp(argv[0], (char **) argv);
45 if (waitpid(pid, &ret, 0) == -1)
55 proto_shell_handler(struct interface_proto_state *proto,
56 enum interface_proto_cmd cmd, bool force)
58 struct proto_shell_state *state;
59 struct proto_shell_handler *handler;
64 state = container_of(proto, struct proto_shell_state, proto);
65 handler = state->handler;
67 config = blobmsg_format_json(state->config, true);
71 argv[0] = handler->script_name;
72 argv[1] = handler->proto.name;
76 if (proto->iface->main_dev.dev) {
77 argv[4] = proto->iface->main_dev.dev->ifname;
85 case PROTO_CMD_TEARDOWN:
86 ret = run_script(argv);
96 proto_shell_free(struct interface_proto_state *proto)
98 struct proto_shell_state *state;
100 state = container_of(proto, struct proto_shell_state, proto);
105 struct interface_proto_state *
106 proto_shell_attach(const struct proto_handler *h, struct interface *iface,
107 struct blob_attr *attr)
109 struct proto_shell_state *state;
111 state = calloc(1, sizeof(*state));
112 state->config = malloc(blob_pad_len(attr));
116 memcpy(state->config, attr, blob_pad_len(attr));
117 state->proto.free = proto_shell_free;
118 state->proto.cb = proto_shell_handler;
119 state->handler = container_of(h, struct proto_shell_handler, proto);
121 return &state->proto;
129 check_type(json_object *obj, json_type type)
134 if (json_object_get_type(obj) != type)
140 static inline json_object *
141 get_field(json_object *obj, const char *name, json_type type)
143 return check_type(json_object_object_get(obj, name), type);
147 proto_shell_parse_config(struct config_param_list *config, json_object *obj)
149 struct blobmsg_policy *attrs;
150 char *str_buf, *str_cur;
154 attrs = calloc(1, sizeof(*attrs));
158 config->n_params = json_object_array_length(obj);
159 config->params = attrs;
160 for (i = 0; i < config->n_params; i++) {
161 json_object *cur, *name, *type;
163 cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
167 name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
171 type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
175 attrs[i].name = json_object_get_string(name);
176 attrs[i].type = json_object_get_int(type);
177 if (attrs[i].type > BLOBMSG_TYPE_LAST)
180 str_len += strlen(attrs[i].name + 1);
183 str_buf = malloc(str_len);
188 for (i = 0; i < config->n_params; i++) {
189 const char *name = attrs[i].name;
191 attrs[i].name = str_cur;
192 str_cur += sprintf(str_cur, "%s", name) + 1;
199 config->n_params = 0;
204 proto_shell_add_handler(const char *script, json_object *obj)
206 struct proto_shell_handler *handler;
207 struct proto_handler *proto;
208 json_object *config, *tmp;
212 if (!check_type(obj, json_type_object))
215 tmp = get_field(obj, "name", json_type_string);
219 name = json_object_get_string(tmp);
221 handler = calloc(1, sizeof(*handler) +
227 strcpy(handler->script_name, script);
229 str = handler->script_name + strlen(handler->script_name) + 1;
232 proto = &handler->proto;
234 proto->config_params = &handler->config;
235 proto->attach = proto_shell_attach;
237 tmp = get_field(obj, "no-device", json_type_boolean);
238 if (tmp && json_object_get_boolean(tmp))
239 handler->proto.flags |= PROTO_FLAG_NODEV;
241 config = get_field(obj, "config", json_type_array);
243 handler->config_buf = proto_shell_parse_config(&handler->config, config);
245 DPRINTF("Add handler for script %s: %s\n", script, proto->name);
246 add_proto_handler(proto);
249 static void proto_shell_add_script(const char *name)
251 struct json_tokener *tok = NULL;
253 static char buf[512];
254 char *start, *end, *cmd;
258 #define DUMP_SUFFIX " '' dump"
260 cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
261 sprintf(cmd, "%s" DUMP_SUFFIX, name);
268 buflen = fread(buf, 1, sizeof(buf) - 1, f);
275 end = memchr(start, '\n', len);
280 tok = json_tokener_new();
282 obj = json_tokener_parse_ex(tok, start, len);
283 if (!is_error(obj)) {
284 proto_shell_add_handler(name, obj);
285 json_object_put(obj);
286 json_tokener_free(tok);
292 len = buflen - (start - buf);
295 } while (!feof(f) && !ferror(f));
298 json_tokener_free(tok);
303 void __init proto_shell_init(void)
309 main_fd = open(".", O_RDONLY | O_DIRECTORY);
313 if (chdir(main_path)) {
314 perror("chdir(main path)");
318 if (chdir("./proto"))
321 proto_fd = open(".", O_RDONLY | O_DIRECTORY);
325 glob("./*.sh", 0, NULL, &g);
326 for (i = 0; i < g.gl_pathc; i++)
327 proto_shell_add_script(g.gl_pathv[i]);