2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
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.
15 #include <linux/types.h>
17 #include <libubox/uloop.h>
18 #include <libubox/blobmsg_json.h>
23 static struct ubus_subscriber log_event
;
26 struct ubus_context
*_ctx
;
27 static struct blob_buf b
;
29 static const struct blobmsg_policy read_policy
=
30 { .name
= "lines", .type
= BLOBMSG_TYPE_INT32
};
32 static const struct blobmsg_policy write_policy
=
33 { .name
= "event", .type
= BLOBMSG_TYPE_STRING
};
35 static int read_log(struct ubus_context
*ctx
, struct ubus_object
*obj
,
36 struct ubus_request_data
*req
, const char *method
,
37 struct blob_attr
*msg
)
45 blobmsg_parse(&read_policy
, 1, &tb
, blob_data(msg
), blob_len(msg
));
47 count
= blobmsg_get_u32(tb
);
51 lines
= blobmsg_open_array(&b
, "lines");
53 l
= log_list(count
, NULL
);
56 entry
= blobmsg_open_table(&b
, NULL
);
57 blobmsg_add_string(&b
, "msg", l
->data
);
58 blobmsg_add_u32(&b
, "id", l
->id
);
59 blobmsg_add_u32(&b
, "priority", l
->priority
);
60 blobmsg_add_u32(&b
, "source", l
->source
);
61 blobmsg_add_u64(&b
, "time", l
->ts
.tv_sec
);
62 blobmsg_close_table(&b
, entry
);
63 l
= log_list(count
, l
);
65 blobmsg_close_table(&b
, lines
);
66 ubus_send_reply(ctx
, req
, b
.head
);
71 static int write_log(struct ubus_context
*ctx
, struct ubus_object
*obj
,
72 struct ubus_request_data
*req
, const char *method
,
73 struct blob_attr
*msg
)
79 blobmsg_parse(&write_policy
, 1, &tb
, blob_data(msg
), blob_len(msg
));
81 event
= blobmsg_get_string(tb
);
82 log_add(event
, strlen(event
) + 1, SOURCE_SYSLOG
);
89 static void log_subscribe_cb(struct ubus_context
*ctx
, struct ubus_object
*obj
)
91 notify
= obj
->has_subscribers
;
94 static const struct ubus_method log_methods
[] = {
95 { .name
= "read", .handler
= read_log
, .policy
= &read_policy
, .n_policy
= 1 },
96 { .name
= "write", .handler
= write_log
, .policy
= &write_policy
, .n_policy
= 1 },
99 static struct ubus_object_type log_object_type
=
100 UBUS_OBJECT_TYPE("log", log_methods
);
102 static struct ubus_object log_object
= {
104 .type
= &log_object_type
,
105 .methods
= log_methods
,
106 .n_methods
= ARRAY_SIZE(log_methods
),
107 .subscribe_cb
= log_subscribe_cb
,
110 void ubus_notify_log(struct log_head
*l
)
117 blob_buf_init(&b
, 0);
118 blobmsg_add_u32(&b
, "id", l
->id
);
119 blobmsg_add_u32(&b
, "priority", l
->priority
);
120 blobmsg_add_u32(&b
, "source", l
->source
);
121 blobmsg_add_u64(&b
, "time", (((__u64
) l
->ts
.tv_sec
) * 1000) + (l
->ts
.tv_nsec
/ 1000000));
123 ret
= ubus_notify(_ctx
, &log_object
, l
->data
, b
.head
, -1);
125 ERROR("Failed to notify log: %s\n", ubus_strerror(ret
));
128 void ubus_init_log(struct ubus_context
*ctx
)
134 ret
= ubus_add_object(ctx
, &log_object
);
136 ERROR("Failed to add object: %s\n", ubus_strerror(ret
));
138 ret
= ubus_register_subscriber(ctx
, &log_event
);
140 ERROR("Failed to add watch handler: %s\n", ubus_strerror(ret
));