11 #include <arpa/inet.h>
12 #include <netinet/in.h>
14 #include <libubox/blobmsg_json.h>
17 #include "interface.h"
18 #include "interface-ip.h"
21 static struct netifd_fd proto_fd
;
23 struct proto_shell_handler
{
24 struct list_head list
;
25 struct proto_handler proto
;
26 struct config_param_list config
;
31 struct proto_shell_state
{
32 struct interface_proto_state proto
;
33 struct proto_shell_handler
*handler
;
34 struct blob_attr
*config
;
36 struct device_user l3_dev
;
38 struct uloop_timeout setup_timeout
;
39 struct netifd_process setup_task
;
40 struct netifd_process teardown_task
;
41 bool teardown_pending
;
42 bool teardown_wait_task
;
44 struct netifd_process proto_task
;
49 proto_shell_handler(struct interface_proto_state
*proto
,
50 enum interface_proto_cmd cmd
, bool force
)
52 struct proto_shell_state
*state
;
53 struct proto_shell_handler
*handler
;
54 struct netifd_process
*proc
;
55 static char error_buf
[32];
60 int ret
, i
= 0, j
= 0;
62 state
= container_of(proto
, struct proto_shell_state
, proto
);
63 handler
= state
->handler
;
65 if (cmd
== PROTO_CMD_SETUP
) {
67 proc
= &state
->setup_task
;
68 state
->last_error
= -1;
71 proc
= &state
->teardown_task
;
72 if (state
->setup_task
.uloop
.pending
&& !state
->teardown_wait_task
) {
73 uloop_timeout_set(&state
->setup_timeout
, 1000);
74 kill(state
->setup_task
.uloop
.pid
, SIGTERM
);
75 state
->teardown_pending
= true;
78 if (state
->last_error
>= 0) {
79 snprintf(error_buf
, sizeof(error_buf
), "ERROR=%d", state
->last_error
);
80 envp
[j
++] = error_buf
;
84 config
= blobmsg_format_json(state
->config
, true);
88 argv
[i
++] = handler
->script_name
;
89 argv
[i
++] = handler
->proto
.name
;
91 argv
[i
++] = proto
->iface
->name
;
93 if (proto
->iface
->main_dev
.dev
)
94 argv
[i
++] = proto
->iface
->main_dev
.dev
->ifname
;
98 ret
= netifd_start_process(argv
, envp
, proc
);
105 proto_shell_setup_timeout_cb(struct uloop_timeout
*timeout
)
107 struct proto_shell_state
*state
;
109 state
= container_of(timeout
, struct proto_shell_state
, setup_timeout
);
110 kill(state
->setup_task
.uloop
.pid
, SIGKILL
);
114 proto_shell_setup_cb(struct netifd_process
*p
, int ret
)
116 struct proto_shell_state
*state
;
118 state
= container_of(p
, struct proto_shell_state
, setup_task
);
119 uloop_timeout_cancel(&state
->setup_timeout
);
120 if (state
->teardown_pending
) {
121 state
->teardown_pending
= false;
122 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
, false);
127 proto_shell_teardown_cb(struct netifd_process
*p
, int ret
)
129 struct proto_shell_state
*state
;
131 state
= container_of(p
, struct proto_shell_state
, teardown_task
);
133 if (state
->teardown_wait_task
)
136 netifd_kill_process(&state
->proto_task
);
137 state
->proto
.proto_event(&state
->proto
, IFPEV_DOWN
);
141 proto_shell_task_cb(struct netifd_process
*p
, int ret
)
143 struct proto_shell_state
*state
;
144 bool teardown_wait_task
;
146 state
= container_of(p
, struct proto_shell_state
, proto_task
);
148 teardown_wait_task
= state
->teardown_wait_task
;
149 state
->teardown_wait_task
= false;
150 if (state
->teardown_pending
|| state
->teardown_task
.uloop
.pending
)
153 if (teardown_wait_task
) {
154 proto_shell_teardown_cb(&state
->teardown_task
, 0);
158 state
->last_error
= WEXITSTATUS(ret
);
159 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
160 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
, false);
164 proto_shell_free(struct interface_proto_state
*proto
)
166 struct proto_shell_state
*state
;
168 state
= container_of(proto
, struct proto_shell_state
, proto
);
174 proto_shell_parse_addr_list(struct interface_ip_settings
*ip
, struct blob_attr
*attr
,
175 bool v6
, bool external
)
177 struct device_addr
*addr
;
178 struct blob_attr
*cur
;
181 blobmsg_for_each_attr(cur
, attr
, rem
) {
182 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
) {
183 DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur
));
187 addr
= proto_parse_ip_addr_string(blobmsg_data(cur
), v6
, v6
? 32 : 128);
189 DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur
));
194 addr
->flags
|= DEVADDR_EXTERNAL
;
196 vlist_add(&ip
->addr
, &addr
->node
);
201 proto_shell_parse_route_list(struct interface
*iface
, struct blob_attr
*attr
,
204 struct blob_attr
*cur
;
207 blobmsg_for_each_attr(cur
, attr
, rem
) {
208 if (blobmsg_type(cur
) != BLOBMSG_TYPE_TABLE
) {
209 DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur
));
213 interface_ip_add_route(iface
, cur
, v6
);
236 static const struct blobmsg_policy notify_attr
[__NOTIFY_LAST
] = {
237 [NOTIFY_ACTION
] = { .name
= "action", .type
= BLOBMSG_TYPE_INT32
},
238 [NOTIFY_ERROR
] = { .name
= "error", .type
= BLOBMSG_TYPE_ARRAY
},
239 [NOTIFY_COMMAND
] = { .name
= "command", .type
= BLOBMSG_TYPE_ARRAY
},
240 [NOTIFY_ENV
] = { .name
= "env", .type
= BLOBMSG_TYPE_ARRAY
},
241 [NOTIFY_SIGNAL
] = { .name
= "signal", .type
= BLOBMSG_TYPE_INT32
},
242 [NOTIFY_AVAILABLE
] = { .name
= "available", .type
= BLOBMSG_TYPE_BOOL
},
243 [NOTIFY_LINK_UP
] = { .name
= "link-up", .type
= BLOBMSG_TYPE_BOOL
},
244 [NOTIFY_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
245 [NOTIFY_ADDR_EXT
] = { .name
= "address-external", .type
= BLOBMSG_TYPE_BOOL
},
246 [NOTIFY_IPADDR
] = { .name
= "ipaddr", .type
= BLOBMSG_TYPE_ARRAY
},
247 [NOTIFY_IP6ADDR
] = { .name
= "ip6addr", .type
= BLOBMSG_TYPE_ARRAY
},
248 [NOTIFY_ROUTES
] = { .name
= "routes", .type
= BLOBMSG_TYPE_ARRAY
},
249 [NOTIFY_ROUTES6
] = { .name
= "routes6", .type
= BLOBMSG_TYPE_ARRAY
},
250 [NOTIFY_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
251 [NOTIFY_DNS_SEARCH
] = { .name
= "dns_search", .type
= BLOBMSG_TYPE_ARRAY
},
255 proto_shell_update_link(struct proto_shell_state
*state
, struct blob_attr
**tb
)
257 struct interface_ip_settings
*ip
;
258 struct blob_attr
*cur
;
260 bool addr_ext
= false;
263 if (!tb
[NOTIFY_LINK_UP
])
264 return UBUS_STATUS_INVALID_ARGUMENT
;
266 up
= blobmsg_get_bool(tb
[NOTIFY_LINK_UP
]);
268 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
272 if ((cur
= tb
[NOTIFY_ADDR_EXT
]) != NULL
) {
273 addr_ext
= blobmsg_get_bool(cur
);
278 if (!tb
[NOTIFY_IFNAME
]) {
279 if (!state
->proto
.iface
->main_dev
.dev
)
280 return UBUS_STATUS_INVALID_ARGUMENT
;
282 if (state
->l3_dev
.dev
)
283 device_remove_user(&state
->l3_dev
);
285 device_add_user(&state
->l3_dev
,
286 device_get(blobmsg_data(tb
[NOTIFY_IFNAME
]), dev_create
));
287 state
->proto
.iface
->l3_dev
= &state
->l3_dev
;
288 device_claim(&state
->l3_dev
);
291 ip
= &state
->proto
.iface
->proto_ip
;
292 interface_update_start(state
->proto
.iface
);
294 if ((cur
= tb
[NOTIFY_IPADDR
]) != NULL
)
295 proto_shell_parse_addr_list(ip
, cur
, false, addr_ext
);
297 if ((cur
= tb
[NOTIFY_IP6ADDR
]) != NULL
)
298 proto_shell_parse_addr_list(ip
, cur
, true, addr_ext
);
300 if ((cur
= tb
[NOTIFY_ROUTES
]) != NULL
)
301 proto_shell_parse_route_list(state
->proto
.iface
, cur
, false);
303 if ((cur
= tb
[NOTIFY_ROUTES6
]) != NULL
)
304 proto_shell_parse_route_list(state
->proto
.iface
, cur
, true);
306 if ((cur
= tb
[NOTIFY_DNS
]) != NULL
)
307 interface_add_dns_server_list(ip
, cur
);
309 if ((cur
= tb
[NOTIFY_DNS_SEARCH
]) != NULL
)
310 interface_add_dns_search_list(ip
, cur
);
312 interface_update_complete(state
->proto
.iface
);
314 state
->proto
.proto_event(&state
->proto
, IFPEV_UP
);
320 fill_string_list(struct blob_attr
*attr
, char **argv
, int max
)
322 struct blob_attr
*cur
;
329 blobmsg_for_each_attr(cur
, attr
, rem
) {
330 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
333 if (!blobmsg_check_attr(cur
, NULL
))
336 argv
[argc
++] = blobmsg_data(cur
);
347 proto_shell_run_command(struct proto_shell_state
*state
, struct blob_attr
**tb
)
349 static char *argv
[64];
350 static char *env
[32];
352 if (!tb
[NOTIFY_COMMAND
])
355 if (!fill_string_list(tb
[NOTIFY_COMMAND
], argv
, ARRAY_SIZE(argv
)))
358 if (!fill_string_list(tb
[NOTIFY_ENV
], env
, ARRAY_SIZE(env
)))
361 netifd_start_process((const char **) argv
, (char **) env
, &state
->proto_task
);
366 return UBUS_STATUS_INVALID_ARGUMENT
;
370 proto_shell_kill_command(struct proto_shell_state
*state
, struct blob_attr
**tb
)
372 unsigned int signal
= ~0;
374 if (tb
[NOTIFY_SIGNAL
])
375 signal
= blobmsg_get_u32(tb
[NOTIFY_SIGNAL
]);
380 if (state
->proto_task
.uloop
.pending
) {
381 kill(state
->proto_task
.uloop
.pid
, signal
);
382 state
->teardown_wait_task
= true;
389 proto_shell_notify_error(struct proto_shell_state
*state
, struct blob_attr
**tb
)
391 struct blob_attr
*cur
;
396 if (!tb
[NOTIFY_ERROR
])
397 return UBUS_STATUS_INVALID_ARGUMENT
;
399 blobmsg_for_each_attr(cur
, tb
[NOTIFY_ERROR
], rem
) {
400 if (n_data
+ 1 == ARRAY_SIZE(data
))
403 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
406 if (!blobmsg_check_attr(cur
, NULL
))
409 data
[n_data
++] = blobmsg_data(cur
);
415 interface_add_error(state
->proto
.iface
, state
->handler
->proto
.name
,
416 data
[0], (const char **) &data
[1], n_data
- 1);
421 return UBUS_STATUS_INVALID_ARGUMENT
;
425 proto_shell_block_restart(struct proto_shell_state
*state
, struct blob_attr
**tb
)
427 state
->proto
.iface
->autostart
= false;
432 proto_shell_set_available(struct proto_shell_state
*state
, struct blob_attr
**tb
)
434 if (!tb
[NOTIFY_AVAILABLE
])
435 return UBUS_STATUS_INVALID_ARGUMENT
;
437 interface_set_available(state
->proto
.iface
, blobmsg_get_bool(tb
[NOTIFY_AVAILABLE
]));
442 proto_shell_notify(struct interface_proto_state
*proto
, struct blob_attr
*attr
)
444 struct proto_shell_state
*state
;
445 struct blob_attr
*tb
[__NOTIFY_LAST
];
447 state
= container_of(proto
, struct proto_shell_state
, proto
);
449 blobmsg_parse(notify_attr
, __NOTIFY_LAST
, tb
, blob_data(attr
), blob_len(attr
));
450 if (!tb
[NOTIFY_ACTION
])
451 return UBUS_STATUS_INVALID_ARGUMENT
;
453 switch(blobmsg_get_u32(tb
[NOTIFY_ACTION
])) {
455 return proto_shell_update_link(state
, tb
);
457 return proto_shell_run_command(state
, tb
);
459 return proto_shell_kill_command(state
, tb
);
461 return proto_shell_notify_error(state
, tb
);
463 return proto_shell_block_restart(state
, tb
);
465 return proto_shell_set_available(state
, tb
);
467 return UBUS_STATUS_INVALID_ARGUMENT
;
471 static struct interface_proto_state
*
472 proto_shell_attach(const struct proto_handler
*h
, struct interface
*iface
,
473 struct blob_attr
*attr
)
475 struct proto_shell_state
*state
;
477 state
= calloc(1, sizeof(*state
));
478 state
->config
= malloc(blob_pad_len(attr
));
482 memcpy(state
->config
, attr
, blob_pad_len(attr
));
483 state
->proto
.free
= proto_shell_free
;
484 state
->proto
.notify
= proto_shell_notify
;
485 state
->proto
.cb
= proto_shell_handler
;
486 state
->setup_timeout
.cb
= proto_shell_setup_timeout_cb
;
487 state
->setup_task
.cb
= proto_shell_setup_cb
;
488 state
->setup_task
.dir_fd
= proto_fd
.fd
;
489 state
->setup_task
.log_prefix
= iface
->name
;
490 state
->teardown_task
.cb
= proto_shell_teardown_cb
;
491 state
->teardown_task
.dir_fd
= proto_fd
.fd
;
492 state
->teardown_task
.log_prefix
= iface
->name
;
493 state
->proto_task
.cb
= proto_shell_task_cb
;
494 state
->proto_task
.dir_fd
= proto_fd
.fd
;
495 state
->proto_task
.log_prefix
= iface
->name
;
496 state
->handler
= container_of(h
, struct proto_shell_handler
, proto
);
498 return &state
->proto
;
506 check_type(json_object
*obj
, json_type type
)
511 if (json_object_get_type(obj
) != type
)
517 static inline json_object
*
518 get_field(json_object
*obj
, const char *name
, json_type type
)
520 return check_type(json_object_object_get(obj
, name
), type
);
524 proto_shell_parse_config(struct config_param_list
*config
, json_object
*obj
)
526 struct blobmsg_policy
*attrs
;
527 char *str_buf
, *str_cur
;
531 config
->n_params
= json_object_array_length(obj
);
532 attrs
= calloc(1, sizeof(*attrs
) * config
->n_params
);
536 config
->params
= attrs
;
537 for (i
= 0; i
< config
->n_params
; i
++) {
538 json_object
*cur
, *name
, *type
;
540 cur
= check_type(json_object_array_get_idx(obj
, i
), json_type_array
);
544 name
= check_type(json_object_array_get_idx(cur
, 0), json_type_string
);
548 type
= check_type(json_object_array_get_idx(cur
, 1), json_type_int
);
552 attrs
[i
].name
= json_object_get_string(name
);
553 attrs
[i
].type
= json_object_get_int(type
);
554 if (attrs
[i
].type
> BLOBMSG_TYPE_LAST
)
557 str_len
+= strlen(attrs
[i
].name
) + 1;
560 str_buf
= malloc(str_len
);
565 for (i
= 0; i
< config
->n_params
; i
++) {
566 const char *name
= attrs
[i
].name
;
568 attrs
[i
].name
= str_cur
;
569 str_cur
+= sprintf(str_cur
, "%s", name
) + 1;
576 config
->n_params
= 0;
581 proto_shell_add_handler(const char *script
, json_object
*obj
)
583 struct proto_shell_handler
*handler
;
584 struct proto_handler
*proto
;
585 json_object
*config
, *tmp
;
589 if (!check_type(obj
, json_type_object
))
592 tmp
= get_field(obj
, "name", json_type_string
);
596 name
= json_object_get_string(tmp
);
598 handler
= calloc(1, sizeof(*handler
) +
604 strcpy(handler
->script_name
, script
);
606 str
= handler
->script_name
+ strlen(handler
->script_name
) + 1;
609 proto
= &handler
->proto
;
611 proto
->config_params
= &handler
->config
;
612 proto
->attach
= proto_shell_attach
;
614 tmp
= get_field(obj
, "no-device", json_type_boolean
);
615 if (tmp
&& json_object_get_boolean(tmp
))
616 handler
->proto
.flags
|= PROTO_FLAG_NODEV
;
618 config
= get_field(obj
, "config", json_type_array
);
620 handler
->config_buf
= proto_shell_parse_config(&handler
->config
, config
);
622 DPRINTF("Add handler for script %s: %s\n", script
, proto
->name
);
623 add_proto_handler(proto
);
626 static void proto_shell_add_script(const char *name
)
628 struct json_tokener
*tok
= NULL
;
630 static char buf
[512];
635 #define DUMP_SUFFIX " '' dump"
637 cmd
= alloca(strlen(name
) + 1 + sizeof(DUMP_SUFFIX
));
638 sprintf(cmd
, "%s" DUMP_SUFFIX
, name
);
645 start
= fgets(buf
, sizeof(buf
), f
);
652 tok
= json_tokener_new();
654 obj
= json_tokener_parse_ex(tok
, start
, len
);
655 if (!is_error(obj
)) {
656 proto_shell_add_handler(name
, obj
);
657 json_object_put(obj
);
658 json_tokener_free(tok
);
660 } else if (start
[len
- 1] == '\n') {
661 json_tokener_free(tok
);
664 } while (!feof(f
) && !ferror(f
));
667 json_tokener_free(tok
);
672 static void __init
proto_shell_init(void)
678 main_fd
= open(".", O_RDONLY
| O_DIRECTORY
);
682 if (chdir(main_path
)) {
683 perror("chdir(main path)");
687 if (chdir("./proto"))
690 proto_fd
.fd
= open(".", O_RDONLY
| O_DIRECTORY
);
694 netifd_fd_add(&proto_fd
);
695 glob("./*.sh", 0, NULL
, &g
);
696 for (i
= 0; i
< g
.gl_pathc
; i
++)
697 proto_shell_add_script(g
.gl_pathv
[i
]);