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
]);