2 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License version 2.1
6 * as published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
18 #include <linux/types.h>
20 #include <libubox/uloop.h>
21 #include <libubox/blobmsg.h>
28 static struct blob_buf b
;
29 static struct ubus_context
*_ctx
;
30 static struct uloop_timeout ubus_timer
;
32 static const struct blobmsg_policy read_policy
=
33 { .name
= "lines", .type
= BLOBMSG_TYPE_INT32
};
35 static const struct blobmsg_policy write_policy
=
36 { .name
= "event", .type
= BLOBMSG_TYPE_STRING
};
39 read_log(struct ubus_context
*ctx
, struct ubus_object
*obj
,
40 struct ubus_request_data
*req
, const char *method
,
41 struct blob_attr
*msg
)
49 blobmsg_parse(&read_policy
, 1, &tb
, blob_data(msg
), blob_len(msg
));
51 count
= blobmsg_get_u32(tb
);
55 lines
= blobmsg_open_array(&b
, "lines");
57 l
= log_list(count
, NULL
);
60 entry
= blobmsg_open_table(&b
, NULL
);
61 blobmsg_add_string(&b
, "msg", l
->data
);
62 blobmsg_add_u32(&b
, "id", l
->id
);
63 blobmsg_add_u32(&b
, "priority", l
->priority
);
64 blobmsg_add_u32(&b
, "source", l
->source
);
65 blobmsg_add_u64(&b
, "time", l
->ts
.tv_sec
);
66 blobmsg_close_table(&b
, entry
);
67 l
= log_list(count
, l
);
69 blobmsg_close_table(&b
, lines
);
70 ubus_send_reply(ctx
, req
, b
.head
);
76 write_log(struct ubus_context
*ctx
, struct ubus_object
*obj
,
77 struct ubus_request_data
*req
, const char *method
,
78 struct blob_attr
*msg
)
84 blobmsg_parse(&write_policy
, 1, &tb
, blob_data(msg
), blob_len(msg
));
86 event
= blobmsg_get_string(tb
);
87 log_add(event
, strlen(event
) + 1, SOURCE_SYSLOG
);
95 log_subscribe_cb(struct ubus_context
*ctx
, struct ubus_object
*obj
)
97 notify
= obj
->has_subscribers
;
100 static const struct ubus_method log_methods
[] = {
101 { .name
= "read", .handler
= read_log
, .policy
= &read_policy
, .n_policy
= 1 },
102 { .name
= "write", .handler
= write_log
, .policy
= &write_policy
, .n_policy
= 1 },
105 static struct ubus_object_type log_object_type
=
106 UBUS_OBJECT_TYPE("log", log_methods
);
108 static struct ubus_object log_object
= {
110 .type
= &log_object_type
,
111 .methods
= log_methods
,
112 .n_methods
= ARRAY_SIZE(log_methods
),
113 .subscribe_cb
= log_subscribe_cb
,
117 ubus_notify_log(struct log_head
*l
)
124 blob_buf_init(&b
, 0);
125 blobmsg_add_u32(&b
, "id", l
->id
);
126 blobmsg_add_u32(&b
, "priority", l
->priority
);
127 blobmsg_add_u32(&b
, "source", l
->source
);
128 blobmsg_add_u64(&b
, "time", (((__u64
) l
->ts
.tv_sec
) * 1000) + (l
->ts
.tv_nsec
/ 1000000));
130 ret
= ubus_notify(_ctx
, &log_object
, l
->data
, b
.head
, -1);
132 fprintf(stderr
, "Failed to notify log: %s\n", ubus_strerror(ret
));
136 ubus_reconnect_cb(struct uloop_timeout
*timeout
)
138 if (!ubus_reconnect(_ctx
, NULL
))
139 ubus_add_uloop(_ctx
);
141 uloop_timeout_set(timeout
, 1000);
145 ubus_disconnect_cb(struct ubus_context
*ctx
)
147 ubus_timer
.cb
= ubus_reconnect_cb
;
148 uloop_timeout_set(&ubus_timer
, 1000);
152 ubus_connect_cb(struct uloop_timeout
*timeout
)
156 _ctx
= ubus_connect(NULL
);
158 uloop_timeout_set(timeout
, 1000);
159 fprintf(stderr
, "failed to connect to ubus\n");
162 _ctx
->connection_lost
= ubus_disconnect_cb
;
163 ret
= ubus_add_object(_ctx
, &log_object
);
165 fprintf(stderr
, "Failed to add object: %s\n", ubus_strerror(ret
));
166 fprintf(stderr
, "log: connected to ubus\n");
167 ubus_add_uloop(_ctx
);
171 main(int argc
, char **argv
)
173 int ch
, log_size
= 0;
175 signal(SIGPIPE
, SIG_IGN
);
177 while ((ch
= getopt(argc
, argv
, "S:")) != -1) {
180 log_size
= atoi(optarg
);
188 ubus_timer
.cb
= ubus_connect_cb
;
189 uloop_timeout_set(&ubus_timer
, 1000);