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_process setup_task
;
33 struct uloop_process teardown_task
;
34 bool teardown_pending
;
38 run_script(const char **argv
, struct uloop_process
*proc
)
42 if ((pid
= fork()) < 0)
47 execvp(argv
[0], (char **) argv
);
55 uloop_process_add(proc
);
61 proto_shell_handler(struct interface_proto_state
*proto
,
62 enum interface_proto_cmd cmd
, bool force
)
64 struct proto_shell_state
*state
;
65 struct proto_shell_handler
*handler
;
66 struct uloop_process
*proc
;
72 state
= container_of(proto
, struct proto_shell_state
, proto
);
73 handler
= state
->handler
;
75 if (cmd
== PROTO_CMD_SETUP
) {
77 proc
= &state
->setup_task
;
80 proc
= &state
->teardown_task
;
81 if (state
->setup_task
.pending
) {
82 kill(state
->setup_task
.pid
, SIGINT
);
83 state
->teardown_pending
= true;
88 config
= blobmsg_format_json(state
->config
, true);
92 argv
[i
++] = handler
->script_name
;
93 argv
[i
++] = handler
->proto
.name
;
95 argv
[i
++] = proto
->iface
->name
;
97 if (proto
->iface
->main_dev
.dev
)
98 argv
[i
++] = proto
->iface
->main_dev
.dev
->ifname
;
101 ret
= run_script(argv
, proc
);
108 proto_shell_setup_cb(struct uloop_process
*p
, int ret
)
110 struct proto_shell_state
*state
;
112 state
= container_of(p
, struct proto_shell_state
, setup_task
);
113 if (state
->teardown_pending
) {
114 state
->teardown_pending
= 0;
115 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
, false);
120 proto_shell_teardown_cb(struct uloop_process
*p
, int ret
)
122 struct proto_shell_state
*state
;
124 state
= container_of(p
, struct proto_shell_state
, teardown_task
);
125 state
->proto
.proto_event(&state
->proto
, IFPEV_DOWN
);
129 proto_shell_free(struct interface_proto_state
*proto
)
131 struct proto_shell_state
*state
;
133 state
= container_of(proto
, struct proto_shell_state
, proto
);
138 struct interface_proto_state
*
139 proto_shell_attach(const struct proto_handler
*h
, struct interface
*iface
,
140 struct blob_attr
*attr
)
142 struct proto_shell_state
*state
;
144 state
= calloc(1, sizeof(*state
));
145 state
->config
= malloc(blob_pad_len(attr
));
149 memcpy(state
->config
, attr
, blob_pad_len(attr
));
150 state
->proto
.free
= proto_shell_free
;
151 state
->proto
.cb
= proto_shell_handler
;
152 state
->setup_task
.cb
= proto_shell_setup_cb
;
153 state
->teardown_task
.cb
= proto_shell_teardown_cb
;
154 state
->handler
= container_of(h
, struct proto_shell_handler
, proto
);
156 return &state
->proto
;
164 check_type(json_object
*obj
, json_type type
)
169 if (json_object_get_type(obj
) != type
)
175 static inline json_object
*
176 get_field(json_object
*obj
, const char *name
, json_type type
)
178 return check_type(json_object_object_get(obj
, name
), type
);
182 proto_shell_parse_config(struct config_param_list
*config
, json_object
*obj
)
184 struct blobmsg_policy
*attrs
;
185 char *str_buf
, *str_cur
;
189 attrs
= calloc(1, sizeof(*attrs
));
193 config
->n_params
= json_object_array_length(obj
);
194 config
->params
= attrs
;
195 for (i
= 0; i
< config
->n_params
; i
++) {
196 json_object
*cur
, *name
, *type
;
198 cur
= check_type(json_object_array_get_idx(obj
, i
), json_type_array
);
202 name
= check_type(json_object_array_get_idx(cur
, 0), json_type_string
);
206 type
= check_type(json_object_array_get_idx(cur
, 1), json_type_int
);
210 attrs
[i
].name
= json_object_get_string(name
);
211 attrs
[i
].type
= json_object_get_int(type
);
212 if (attrs
[i
].type
> BLOBMSG_TYPE_LAST
)
215 str_len
+= strlen(attrs
[i
].name
+ 1);
218 str_buf
= malloc(str_len
);
223 for (i
= 0; i
< config
->n_params
; i
++) {
224 const char *name
= attrs
[i
].name
;
226 attrs
[i
].name
= str_cur
;
227 str_cur
+= sprintf(str_cur
, "%s", name
) + 1;
234 config
->n_params
= 0;
239 proto_shell_add_handler(const char *script
, json_object
*obj
)
241 struct proto_shell_handler
*handler
;
242 struct proto_handler
*proto
;
243 json_object
*config
, *tmp
;
247 if (!check_type(obj
, json_type_object
))
250 tmp
= get_field(obj
, "name", json_type_string
);
254 name
= json_object_get_string(tmp
);
256 handler
= calloc(1, sizeof(*handler
) +
262 strcpy(handler
->script_name
, script
);
264 str
= handler
->script_name
+ strlen(handler
->script_name
) + 1;
267 proto
= &handler
->proto
;
269 proto
->config_params
= &handler
->config
;
270 proto
->attach
= proto_shell_attach
;
272 tmp
= get_field(obj
, "no-device", json_type_boolean
);
273 if (tmp
&& json_object_get_boolean(tmp
))
274 handler
->proto
.flags
|= PROTO_FLAG_NODEV
;
276 config
= get_field(obj
, "config", json_type_array
);
278 handler
->config_buf
= proto_shell_parse_config(&handler
->config
, config
);
280 DPRINTF("Add handler for script %s: %s\n", script
, proto
->name
);
281 add_proto_handler(proto
);
284 static void proto_shell_add_script(const char *name
)
286 struct json_tokener
*tok
= NULL
;
288 static char buf
[512];
289 char *start
, *end
, *cmd
;
293 #define DUMP_SUFFIX " '' dump"
295 cmd
= alloca(strlen(name
) + 1 + sizeof(DUMP_SUFFIX
));
296 sprintf(cmd
, "%s" DUMP_SUFFIX
, name
);
303 buflen
= fread(buf
, 1, sizeof(buf
) - 1, f
);
310 end
= memchr(start
, '\n', len
);
315 tok
= json_tokener_new();
317 obj
= json_tokener_parse_ex(tok
, start
, len
);
318 if (!is_error(obj
)) {
319 proto_shell_add_handler(name
, obj
);
320 json_object_put(obj
);
321 json_tokener_free(tok
);
327 len
= buflen
- (start
- buf
);
330 } while (!feof(f
) && !ferror(f
));
333 json_tokener_free(tok
);
338 void __init
proto_shell_init(void)
344 main_fd
= open(".", O_RDONLY
| O_DIRECTORY
);
348 if (chdir(main_path
)) {
349 perror("chdir(main path)");
353 if (chdir("./proto"))
356 proto_fd
= open(".", O_RDONLY
| O_DIRECTORY
);
360 glob("./*.sh", 0, NULL
, &g
);
361 for (i
= 0; i
< g
.gl_pathc
; i
++)
362 proto_shell_add_script(g
.gl_pathv
[i
]);