2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
21 #include <arpa/inet.h>
22 #include <netinet/in.h>
26 #include "interface.h"
27 #include "interface-ip.h"
32 static int proto_fd
= -1;
41 struct proto_shell_handler
{
42 struct list_head list
;
43 struct proto_handler proto
;
48 struct uci_blob_param_list config
;
51 struct proto_shell_dependency
{
52 struct list_head list
;
55 struct proto_shell_state
*proto
;
56 struct interface_user dep
;
62 struct proto_shell_state
{
63 struct interface_proto_state proto
;
64 struct proto_shell_handler
*handler
;
65 struct blob_attr
*config
;
67 struct uloop_timeout teardown_timeout
;
69 struct netifd_process script_task
;
70 struct netifd_process proto_task
;
72 enum proto_shell_sm sm
;
73 bool proto_task_killed
;
77 struct list_head deps
;
81 proto_shell_check_dependencies(struct proto_shell_state
*state
)
83 struct proto_shell_dependency
*dep
;
84 bool available
= true;
86 list_for_each_entry(dep
, &state
->deps
, list
) {
94 interface_set_available(state
->proto
.iface
, available
);
98 proto_shell_if_up_cb(struct interface_user
*dep
, struct interface
*iface
,
99 enum interface_event ev
);
101 proto_shell_if_down_cb(struct interface_user
*dep
, struct interface
*iface
,
102 enum interface_event ev
);
105 proto_shell_update_host_dep(struct proto_shell_dependency
*dep
)
107 struct interface
*iface
= NULL
;
112 if (dep
->interface
[0])
113 iface
= vlist_find(&interfaces
, dep
->interface
, iface
, node
);
115 iface
= interface_ip_add_target_route(&dep
->host
, dep
->v6
, iface
);
119 interface_remove_user(&dep
->dep
);
120 dep
->dep
.cb
= proto_shell_if_down_cb
;
121 interface_add_user(&dep
->dep
, iface
);
124 proto_shell_check_dependencies(dep
->proto
);
128 proto_shell_clear_host_dep(struct proto_shell_state
*state
)
130 struct proto_shell_dependency
*dep
, *tmp
;
132 list_for_each_entry_safe(dep
, tmp
, &state
->deps
, list
) {
133 interface_remove_user(&dep
->dep
);
134 list_del(&dep
->list
);
140 proto_shell_handler(struct interface_proto_state
*proto
,
141 enum interface_proto_cmd cmd
, bool force
)
143 struct proto_shell_state
*state
;
144 struct proto_shell_handler
*handler
;
145 struct netifd_process
*proc
;
146 static char error_buf
[32];
151 int ret
, i
= 0, j
= 0;
153 state
= container_of(proto
, struct proto_shell_state
, proto
);
154 handler
= state
->handler
;
155 proc
= &state
->script_task
;
157 if (cmd
== PROTO_CMD_SETUP
) {
159 state
->last_error
= -1;
160 proto_shell_clear_host_dep(state
);
162 if (state
->sm
== S_TEARDOWN
)
165 if (state
->script_task
.uloop
.pending
) {
166 if (state
->sm
!= S_SETUP_ABORT
) {
167 uloop_timeout_set(&state
->teardown_timeout
, 1000);
168 kill(state
->script_task
.uloop
.pid
, SIGTERM
);
169 if (state
->proto_task
.uloop
.pending
)
170 kill(state
->proto_task
.uloop
.pid
, SIGTERM
);
171 state
->sm
= S_SETUP_ABORT
;
177 state
->sm
= S_TEARDOWN
;
178 if (state
->last_error
>= 0) {
179 snprintf(error_buf
, sizeof(error_buf
), "ERROR=%d", state
->last_error
);
180 envp
[j
++] = error_buf
;
182 uloop_timeout_set(&state
->teardown_timeout
, 5000);
185 config
= blobmsg_format_json(state
->config
, true);
189 argv
[i
++] = handler
->script_name
;
190 argv
[i
++] = handler
->proto
.name
;
192 argv
[i
++] = proto
->iface
->name
;
194 if (proto
->iface
->main_dev
.dev
)
195 argv
[i
++] = proto
->iface
->main_dev
.dev
->ifname
;
199 ret
= netifd_start_process(argv
, envp
, proc
);
206 proto_shell_if_up_cb(struct interface_user
*dep
, struct interface
*iface
,
207 enum interface_event ev
)
209 struct proto_shell_dependency
*pdep
;
211 if (ev
!= IFEV_UP
&& ev
!= IFEV_UPDATE
)
214 pdep
= container_of(dep
, struct proto_shell_dependency
, dep
);
215 proto_shell_update_host_dep(pdep
);
219 proto_shell_if_down_cb(struct interface_user
*dep
, struct interface
*iface
,
220 enum interface_event ev
)
222 struct proto_shell_dependency
*pdep
;
223 struct proto_shell_state
*state
;
225 if (ev
== IFEV_UP
|| ev
== IFEV_UPDATE
)
228 pdep
= container_of(dep
, struct proto_shell_dependency
, dep
);
229 interface_remove_user(dep
);
230 dep
->cb
= proto_shell_if_up_cb
;
231 interface_add_user(dep
, NULL
);
234 if (state
->sm
== S_IDLE
) {
235 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
236 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
, false);
241 proto_shell_task_finish(struct proto_shell_state
*state
,
242 struct netifd_process
*task
)
246 if (task
== &state
->proto_task
)
247 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
250 if (task
== &state
->proto_task
)
251 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
,
256 if (state
->script_task
.uloop
.pending
||
257 state
->proto_task
.uloop
.pending
)
260 uloop_timeout_cancel(&state
->teardown_timeout
);
262 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
, false);
266 if (state
->script_task
.uloop
.pending
)
269 if (state
->proto_task
.uloop
.pending
) {
270 if (!state
->proto_task_killed
)
271 kill(state
->proto_task
.uloop
.pid
, SIGTERM
);
275 uloop_timeout_cancel(&state
->teardown_timeout
);
277 state
->proto
.proto_event(&state
->proto
, IFPEV_DOWN
);
283 proto_shell_teardown_timeout_cb(struct uloop_timeout
*timeout
)
285 struct proto_shell_state
*state
;
287 state
= container_of(timeout
, struct proto_shell_state
, teardown_timeout
);
289 netifd_kill_process(&state
->script_task
);
290 netifd_kill_process(&state
->proto_task
);
291 proto_shell_task_finish(state
, NULL
);
295 proto_shell_script_cb(struct netifd_process
*p
, int ret
)
297 struct proto_shell_state
*state
;
299 state
= container_of(p
, struct proto_shell_state
, script_task
);
300 proto_shell_task_finish(state
, p
);
304 proto_shell_task_cb(struct netifd_process
*p
, int ret
)
306 struct proto_shell_state
*state
;
308 state
= container_of(p
, struct proto_shell_state
, proto_task
);
310 if (state
->sm
== S_IDLE
|| state
->sm
== S_SETUP
)
311 state
->last_error
= WEXITSTATUS(ret
);
313 proto_shell_task_finish(state
, p
);
317 proto_shell_free(struct interface_proto_state
*proto
)
319 struct proto_shell_state
*state
;
321 state
= container_of(proto
, struct proto_shell_state
, proto
);
322 uloop_timeout_cancel(&state
->teardown_timeout
);
323 proto_shell_clear_host_dep(state
);
324 netifd_kill_process(&state
->script_task
);
325 netifd_kill_process(&state
->proto_task
);
331 proto_shell_parse_route_list(struct interface
*iface
, struct blob_attr
*attr
,
334 struct blob_attr
*cur
;
337 blobmsg_for_each_attr(cur
, attr
, rem
) {
338 if (blobmsg_type(cur
) != BLOBMSG_TYPE_TABLE
) {
339 DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur
));
343 interface_ip_add_route(iface
, cur
, v6
);
348 proto_shell_parse_data(struct interface
*iface
, struct blob_attr
*attr
)
350 struct blob_attr
*cur
;
353 blobmsg_for_each_attr(cur
, attr
, rem
)
354 interface_add_data(iface
, cur
);
357 static struct device
*
358 proto_shell_create_tunnel(const char *name
, struct blob_attr
*attr
)
363 memset(&b
, 0, sizeof(b
));
364 blob_buf_init(&b
, 0);
365 blob_put(&b
, 0, blobmsg_data(attr
), blobmsg_data_len(attr
));
366 dev
= device_create(name
, &tunnel_device_type
, blob_data(b
.head
));
393 static const struct blobmsg_policy notify_attr
[__NOTIFY_LAST
] = {
394 [NOTIFY_ACTION
] = { .name
= "action", .type
= BLOBMSG_TYPE_INT32
},
395 [NOTIFY_ERROR
] = { .name
= "error", .type
= BLOBMSG_TYPE_ARRAY
},
396 [NOTIFY_COMMAND
] = { .name
= "command", .type
= BLOBMSG_TYPE_ARRAY
},
397 [NOTIFY_ENV
] = { .name
= "env", .type
= BLOBMSG_TYPE_ARRAY
},
398 [NOTIFY_SIGNAL
] = { .name
= "signal", .type
= BLOBMSG_TYPE_INT32
},
399 [NOTIFY_AVAILABLE
] = { .name
= "available", .type
= BLOBMSG_TYPE_BOOL
},
400 [NOTIFY_LINK_UP
] = { .name
= "link-up", .type
= BLOBMSG_TYPE_BOOL
},
401 [NOTIFY_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
402 [NOTIFY_ADDR_EXT
] = { .name
= "address-external", .type
= BLOBMSG_TYPE_BOOL
},
403 [NOTIFY_ROUTES
] = { .name
= "routes", .type
= BLOBMSG_TYPE_ARRAY
},
404 [NOTIFY_ROUTES6
] = { .name
= "routes6", .type
= BLOBMSG_TYPE_ARRAY
},
405 [NOTIFY_TUNNEL
] = { .name
= "tunnel", .type
= BLOBMSG_TYPE_TABLE
},
406 [NOTIFY_DATA
] = { .name
= "data", .type
= BLOBMSG_TYPE_TABLE
},
407 [NOTIFY_KEEP
] = { .name
= "keep", .type
= BLOBMSG_TYPE_BOOL
},
408 [NOTIFY_HOST
] = { .name
= "host", .type
= BLOBMSG_TYPE_STRING
},
409 [NOTIFY_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
410 [NOTIFY_DNS_SEARCH
] = { .name
= "dns_search", .type
= BLOBMSG_TYPE_ARRAY
},
414 proto_shell_update_link(struct proto_shell_state
*state
, struct blob_attr
*data
, struct blob_attr
**tb
)
416 struct interface
*iface
= state
->proto
.iface
;
417 struct blob_attr
*cur
;
421 bool addr_ext
= false;
425 if (!tb
[NOTIFY_LINK_UP
])
426 return UBUS_STATUS_INVALID_ARGUMENT
;
428 up
= blobmsg_get_bool(tb
[NOTIFY_LINK_UP
]);
430 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
434 if ((cur
= tb
[NOTIFY_KEEP
]) != NULL
)
435 keep
= blobmsg_get_bool(cur
);
437 if ((cur
= tb
[NOTIFY_ADDR_EXT
]) != NULL
) {
438 addr_ext
= blobmsg_get_bool(cur
);
443 if (!tb
[NOTIFY_IFNAME
]) {
444 if (!iface
->main_dev
.dev
)
445 return UBUS_STATUS_INVALID_ARGUMENT
;
446 } else if (!keep
|| iface
->state
!= IFS_UP
) {
448 devname
= blobmsg_data(tb
[NOTIFY_IFNAME
]);
449 if (tb
[NOTIFY_TUNNEL
]) {
450 dev
= proto_shell_create_tunnel(devname
,
453 return UBUS_STATUS_INVALID_ARGUMENT
;
455 dev
= device_get(devname
, dev_create
);
457 return UBUS_STATUS_NOT_FOUND
;
460 interface_set_l3_dev(iface
, dev
);
461 device_claim(&iface
->l3_dev
);
462 device_set_present(dev
, true);
466 interface_update_start(iface
);
468 proto_apply_ip_settings(iface
, data
, addr_ext
);
470 if ((cur
= tb
[NOTIFY_ROUTES
]) != NULL
)
471 proto_shell_parse_route_list(state
->proto
.iface
, cur
, false);
473 if ((cur
= tb
[NOTIFY_ROUTES6
]) != NULL
)
474 proto_shell_parse_route_list(state
->proto
.iface
, cur
, true);
476 if ((cur
= tb
[NOTIFY_DNS
]))
477 interface_add_dns_server_list(&iface
->proto_ip
, cur
);
479 if ((cur
= tb
[NOTIFY_DNS_SEARCH
]))
480 interface_add_dns_search_list(&iface
->proto_ip
, cur
);
482 interface_update_complete(state
->proto
.iface
);
485 state
->proto
.proto_event(&state
->proto
, IFPEV_UP
);
488 if ((cur
= tb
[NOTIFY_DATA
]))
489 proto_shell_parse_data(state
->proto
.iface
, cur
);
495 fill_string_list(struct blob_attr
*attr
, char **argv
, int max
)
497 struct blob_attr
*cur
;
504 blobmsg_for_each_attr(cur
, attr
, rem
) {
505 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
508 if (!blobmsg_check_attr(cur
, NULL
))
511 argv
[argc
++] = blobmsg_data(cur
);
522 proto_shell_run_command(struct proto_shell_state
*state
, struct blob_attr
**tb
)
524 static char *argv
[64];
525 static char *env
[32];
527 if (!tb
[NOTIFY_COMMAND
])
530 if (!fill_string_list(tb
[NOTIFY_COMMAND
], argv
, ARRAY_SIZE(argv
)))
533 if (!fill_string_list(tb
[NOTIFY_ENV
], env
, ARRAY_SIZE(env
)))
536 netifd_start_process((const char **) argv
, (char **) env
, &state
->proto_task
);
541 return UBUS_STATUS_INVALID_ARGUMENT
;
545 proto_shell_kill_command(struct proto_shell_state
*state
, struct blob_attr
**tb
)
547 unsigned int signal
= ~0;
549 if (tb
[NOTIFY_SIGNAL
])
550 signal
= blobmsg_get_u32(tb
[NOTIFY_SIGNAL
]);
555 if (state
->proto_task
.uloop
.pending
) {
556 state
->proto_task_killed
= true;
557 kill(state
->proto_task
.uloop
.pid
, signal
);
564 proto_shell_notify_error(struct proto_shell_state
*state
, struct blob_attr
**tb
)
566 struct blob_attr
*cur
;
571 if (!tb
[NOTIFY_ERROR
])
572 return UBUS_STATUS_INVALID_ARGUMENT
;
574 blobmsg_for_each_attr(cur
, tb
[NOTIFY_ERROR
], rem
) {
575 if (n_data
+ 1 == ARRAY_SIZE(data
))
578 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
581 if (!blobmsg_check_attr(cur
, NULL
))
584 data
[n_data
++] = blobmsg_data(cur
);
590 interface_add_error(state
->proto
.iface
, state
->handler
->proto
.name
,
591 data
[0], (const char **) &data
[1], n_data
- 1);
596 return UBUS_STATUS_INVALID_ARGUMENT
;
600 proto_shell_block_restart(struct proto_shell_state
*state
, struct blob_attr
**tb
)
602 state
->proto
.iface
->autostart
= false;
607 proto_shell_set_available(struct proto_shell_state
*state
, struct blob_attr
**tb
)
609 if (!tb
[NOTIFY_AVAILABLE
])
610 return UBUS_STATUS_INVALID_ARGUMENT
;
612 interface_set_available(state
->proto
.iface
, blobmsg_get_bool(tb
[NOTIFY_AVAILABLE
]));
617 proto_shell_add_host_dependency(struct proto_shell_state
*state
, struct blob_attr
**tb
)
619 struct proto_shell_dependency
*dep
;
620 struct blob_attr
*host
= tb
[NOTIFY_HOST
];
621 struct blob_attr
*ifname_a
= tb
[NOTIFY_IFNAME
];
622 const char *ifname_str
= ifname_a
? blobmsg_data(ifname_a
) : "";
626 return UBUS_STATUS_INVALID_ARGUMENT
;
628 dep
= calloc_a(sizeof(*dep
), &ifname
, strlen(ifname_str
) + 1);
629 if (inet_pton(AF_INET
, blobmsg_data(host
), &dep
->host
) < 1) {
630 if (inet_pton(AF_INET6
, blobmsg_data(host
), &dep
->host
) < 1) {
632 return UBUS_STATUS_INVALID_ARGUMENT
;
639 dep
->interface
= strcpy(ifname
, ifname_str
);
641 dep
->dep
.cb
= proto_shell_if_up_cb
;
642 interface_add_user(&dep
->dep
, NULL
);
643 list_add(&dep
->list
, &state
->deps
);
644 proto_shell_update_host_dep(dep
);
646 return UBUS_STATUS_NOT_FOUND
;
652 proto_shell_setup_failed(struct proto_shell_state
*state
)
656 state
->proto
.proto_event(&state
->proto
, IFPEV_LINK_LOST
);
659 proto_shell_handler(&state
->proto
, PROTO_CMD_TEARDOWN
, false);
668 proto_shell_notify(struct interface_proto_state
*proto
, struct blob_attr
*attr
)
670 struct proto_shell_state
*state
;
671 struct blob_attr
*tb
[__NOTIFY_LAST
];
673 state
= container_of(proto
, struct proto_shell_state
, proto
);
675 blobmsg_parse(notify_attr
, __NOTIFY_LAST
, tb
, blob_data(attr
), blob_len(attr
));
676 if (!tb
[NOTIFY_ACTION
])
677 return UBUS_STATUS_INVALID_ARGUMENT
;
679 switch(blobmsg_get_u32(tb
[NOTIFY_ACTION
])) {
681 return proto_shell_update_link(state
, attr
, tb
);
683 return proto_shell_run_command(state
, tb
);
685 return proto_shell_kill_command(state
, tb
);
687 return proto_shell_notify_error(state
, tb
);
689 return proto_shell_block_restart(state
, tb
);
691 return proto_shell_set_available(state
, tb
);
693 return proto_shell_add_host_dependency(state
, tb
);
695 return proto_shell_setup_failed(state
);
697 return UBUS_STATUS_INVALID_ARGUMENT
;
701 static struct interface_proto_state
*
702 proto_shell_attach(const struct proto_handler
*h
, struct interface
*iface
,
703 struct blob_attr
*attr
)
705 struct proto_shell_state
*state
;
707 state
= calloc(1, sizeof(*state
));
708 INIT_LIST_HEAD(&state
->deps
);
710 state
->config
= malloc(blob_pad_len(attr
));
714 memcpy(state
->config
, attr
, blob_pad_len(attr
));
715 state
->proto
.free
= proto_shell_free
;
716 state
->proto
.notify
= proto_shell_notify
;
717 state
->proto
.cb
= proto_shell_handler
;
718 state
->teardown_timeout
.cb
= proto_shell_teardown_timeout_cb
;
719 state
->script_task
.cb
= proto_shell_script_cb
;
720 state
->script_task
.dir_fd
= proto_fd
;
721 state
->script_task
.log_prefix
= iface
->name
;
722 state
->proto_task
.cb
= proto_shell_task_cb
;
723 state
->proto_task
.dir_fd
= proto_fd
;
724 state
->proto_task
.log_prefix
= iface
->name
;
725 state
->handler
= container_of(h
, struct proto_shell_handler
, proto
);
727 return &state
->proto
;
735 proto_shell_add_handler(const char *script
, const char *name
, json_object
*obj
)
737 struct proto_shell_handler
*handler
;
738 struct proto_handler
*proto
;
739 json_object
*config
, *tmp
;
740 char *proto_name
, *script_name
;
742 handler
= calloc_a(sizeof(*handler
),
743 &proto_name
, strlen(name
) + 1,
744 &script_name
, strlen(script
) + 1);
748 handler
->script_name
= strcpy(script_name
, script
);
750 proto
= &handler
->proto
;
751 proto
->name
= strcpy(proto_name
, name
);
752 proto
->config_params
= &handler
->config
;
753 proto
->attach
= proto_shell_attach
;
755 tmp
= json_get_field(obj
, "no-device", json_type_boolean
);
756 if (tmp
&& json_object_get_boolean(tmp
))
757 handler
->proto
.flags
|= PROTO_FLAG_NODEV
;
759 tmp
= json_get_field(obj
, "available", json_type_boolean
);
760 if (tmp
&& json_object_get_boolean(tmp
))
761 handler
->proto
.flags
|= PROTO_FLAG_INIT_AVAILABLE
;
763 config
= json_get_field(obj
, "config", json_type_array
);
765 handler
->config_buf
= netifd_handler_parse_config(&handler
->config
, config
);
767 DPRINTF("Add handler for script %s: %s\n", script
, proto
->name
);
768 add_proto_handler(proto
);
771 static void __init
proto_shell_init(void)
773 proto_fd
= netifd_open_subdir("proto");
777 netifd_init_script_handlers(proto_fd
, proto_shell_add_handler
);