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 device_remove_user(&state
->l3_dev
);
144 proto_shell_free(struct interface_proto_state
*proto
)
146 struct proto_shell_state
*state
;
148 state
= container_of(proto
, struct proto_shell_state
, proto
);
159 static const struct blobmsg_policy notify_attr
[__NOTIFY_LAST
] = {
160 [NOTIFY_LINK_UP
] = { .name
= "link-up", .type
= BLOBMSG_TYPE_BOOL
},
161 [NOTIFY_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
165 proto_shell_notify(struct interface_proto_state
*proto
, struct blob_attr
*attr
)
167 struct proto_shell_state
*state
;
168 struct blob_attr
*tb
[__NOTIFY_LAST
];
171 state
= container_of(proto
, struct proto_shell_state
, proto
);
173 blobmsg_parse(notify_attr
, __NOTIFY_LAST
, tb
, blob_data(attr
), blob_len(attr
));
174 if (!tb
[NOTIFY_LINK_UP
])
175 return UBUS_STATUS_INVALID_ARGUMENT
;
177 up
= blobmsg_get_bool(tb
[NOTIFY_LINK_UP
]);
179 if (!tb
[NOTIFY_IFNAME
])
180 return UBUS_STATUS_INVALID_ARGUMENT
;
182 device_add_user(&state
->l3_dev
,
183 device_get(blobmsg_data(tb
[NOTIFY_IFNAME
]), true));
184 device_claim(&state
->l3_dev
);
185 state
->proto
.iface
->l3_dev
= &state
->l3_dev
;
186 state
->proto
.proto_event(&state
->proto
, IFPEV_UP
);
188 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
194 struct interface_proto_state
*
195 proto_shell_attach(const struct proto_handler
*h
, struct interface
*iface
,
196 struct blob_attr
*attr
)
198 struct proto_shell_state
*state
;
200 state
= calloc(1, sizeof(*state
));
201 state
->config
= malloc(blob_pad_len(attr
));
205 memcpy(state
->config
, attr
, blob_pad_len(attr
));
206 state
->proto
.free
= proto_shell_free
;
207 state
->proto
.notify
= proto_shell_notify
;
208 state
->proto
.cb
= proto_shell_handler
;
209 state
->setup_timeout
.cb
= proto_shell_setup_timeout_cb
;
210 state
->setup_task
.cb
= proto_shell_setup_cb
;
211 state
->teardown_task
.cb
= proto_shell_teardown_cb
;
212 state
->handler
= container_of(h
, struct proto_shell_handler
, proto
);
214 return &state
->proto
;
222 check_type(json_object
*obj
, json_type type
)
227 if (json_object_get_type(obj
) != type
)
233 static inline json_object
*
234 get_field(json_object
*obj
, const char *name
, json_type type
)
236 return check_type(json_object_object_get(obj
, name
), type
);
240 proto_shell_parse_config(struct config_param_list
*config
, json_object
*obj
)
242 struct blobmsg_policy
*attrs
;
243 char *str_buf
, *str_cur
;
247 attrs
= calloc(1, sizeof(*attrs
));
251 config
->n_params
= json_object_array_length(obj
);
252 config
->params
= attrs
;
253 for (i
= 0; i
< config
->n_params
; i
++) {
254 json_object
*cur
, *name
, *type
;
256 cur
= check_type(json_object_array_get_idx(obj
, i
), json_type_array
);
260 name
= check_type(json_object_array_get_idx(cur
, 0), json_type_string
);
264 type
= check_type(json_object_array_get_idx(cur
, 1), json_type_int
);
268 attrs
[i
].name
= json_object_get_string(name
);
269 attrs
[i
].type
= json_object_get_int(type
);
270 if (attrs
[i
].type
> BLOBMSG_TYPE_LAST
)
273 str_len
+= strlen(attrs
[i
].name
+ 1);
276 str_buf
= malloc(str_len
);
281 for (i
= 0; i
< config
->n_params
; i
++) {
282 const char *name
= attrs
[i
].name
;
284 attrs
[i
].name
= str_cur
;
285 str_cur
+= sprintf(str_cur
, "%s", name
) + 1;
292 config
->n_params
= 0;
297 proto_shell_add_handler(const char *script
, json_object
*obj
)
299 struct proto_shell_handler
*handler
;
300 struct proto_handler
*proto
;
301 json_object
*config
, *tmp
;
305 if (!check_type(obj
, json_type_object
))
308 tmp
= get_field(obj
, "name", json_type_string
);
312 name
= json_object_get_string(tmp
);
314 handler
= calloc(1, sizeof(*handler
) +
320 strcpy(handler
->script_name
, script
);
322 str
= handler
->script_name
+ strlen(handler
->script_name
) + 1;
325 proto
= &handler
->proto
;
327 proto
->config_params
= &handler
->config
;
328 proto
->attach
= proto_shell_attach
;
330 tmp
= get_field(obj
, "no-device", json_type_boolean
);
331 if (tmp
&& json_object_get_boolean(tmp
))
332 handler
->proto
.flags
|= PROTO_FLAG_NODEV
;
334 config
= get_field(obj
, "config", json_type_array
);
336 handler
->config_buf
= proto_shell_parse_config(&handler
->config
, config
);
338 DPRINTF("Add handler for script %s: %s\n", script
, proto
->name
);
339 add_proto_handler(proto
);
342 static void proto_shell_add_script(const char *name
)
344 struct json_tokener
*tok
= NULL
;
346 static char buf
[512];
347 char *start
, *end
, *cmd
;
351 #define DUMP_SUFFIX " '' dump"
353 cmd
= alloca(strlen(name
) + 1 + sizeof(DUMP_SUFFIX
));
354 sprintf(cmd
, "%s" DUMP_SUFFIX
, name
);
361 buflen
= fread(buf
, 1, sizeof(buf
) - 1, f
);
368 end
= memchr(start
, '\n', len
);
373 tok
= json_tokener_new();
375 obj
= json_tokener_parse_ex(tok
, start
, len
);
376 if (!is_error(obj
)) {
377 proto_shell_add_handler(name
, obj
);
378 json_object_put(obj
);
379 json_tokener_free(tok
);
385 len
= buflen
- (start
- buf
);
388 } while (!feof(f
) && !ferror(f
));
391 json_tokener_free(tok
);
396 void __init
proto_shell_init(void)
402 main_fd
= open(".", O_RDONLY
| O_DIRECTORY
);
406 if (chdir(main_path
)) {
407 perror("chdir(main path)");
411 if (chdir("./proto"))
414 proto_fd
= open(".", O_RDONLY
| O_DIRECTORY
);
418 glob("./*.sh", 0, NULL
, &g
);
419 for (i
= 0; i
< g
.gl_pathc
; i
++)
420 proto_shell_add_script(g
.gl_pathv
[i
]);