1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
-- Copyright 2017 Jo-Philipp Wich <jo@mein.io>
-- Licensed to the public under the Apache License 2.0.
module("luci.controller.nlbw", package.seeall)
function index()
entry({"admin", "nlbw"}, firstchild(), _("Bandwidth Monitor"), 80)
entry({"admin", "nlbw", "display"}, template("nlbw/display"), _("Display"), 1)
entry({"admin", "nlbw", "config"}, cbi("nlbw/config"), _("Configuration"), 2)
entry({"admin", "nlbw", "backup"}, template("nlbw/backup"), _("Backup"), 3)
entry({"admin", "nlbw", "data"}, call("action_data"), nil, 4)
entry({"admin", "nlbw", "list"}, call("action_list"), nil, 5)
entry({"admin", "nlbw", "ptr"}, call("action_ptr"), nil, 6).leaf = true
entry({"admin", "nlbw", "download"}, call("action_download"), nil, 7)
entry({"admin", "nlbw", "restore"}, post("action_restore"), nil, 8)
entry({"admin", "nlbw", "commit"}, call("action_commit"), nil, 9)
end
local function exec(cmd, args, writer)
local os = require "os"
local nixio = require "nixio"
local fdi, fdo = nixio.pipe()
local pid = nixio.fork()
if pid > 0 then
fdo:close()
while true do
local buffer = fdi:read(2048)
if not buffer or #buffer == 0 then
break
end
if writer then
writer(buffer)
end
end
nixio.waitpid(pid)
elseif pid == 0 then
nixio.dup(fdo, nixio.stdout)
fdi:close()
fdo:close()
nixio.exece(cmd, args, nil)
nixio.stdout:close()
os.exit(1)
end
end
function action_data()
local http = require "luci.http"
local types = {
csv = "text/csv",
json = "application/json"
}
local filename = "data." .. mtype
local args = { }
local mtype = http.formvalue("type") or "json"
local delim = http.formvalue("delim") or ";"
local period = http.formvalue("period")
local group_by = http.formvalue("group_by")
local order_by = http.formvalue("order_by")
if types[mtype] then
args[#args+1] = "-c"
args[#args+1] = mtype
else
http.status(400, "Unsupported type")
return
end
if delim and #delim > 0 then
args[#args+1] = "-s%s" % delim
end
if period and #period > 0 then
args[#args+1] = "-t"
args[#args+1] = period
end
if group_by and #group_by > 0 then
args[#args+1] = "-g"
args[#args+1] = group_by
end
if order_by and #order_by > 0 then
args[#args+1] = "-o"
args[#args+1] = order_by
end
http.prepare_content(types[mtype])
http.header("Content-Disposition", "attachment; filename=\"%s\"" % filename)
exec("/usr/sbin/nlbw", args, http.write)
end
function action_list()
local http = require "luci.http"
local fd = io.popen("/usr/sbin/nlbw -c list")
local periods = { }
if fd then
while true do
local period = fd:read("*l")
if not period then
break
end
periods[#periods+1] = period
end
fd:close()
end
http.prepare_content("application/json")
http.write_json(periods)
end
function action_ptr(...)
local http = require "luci.http"
local util = require "luci.util"
http.prepare_content("application/json")
http.write_json(util.ubus("network.rrdns", "lookup", {
addrs = {...}, timeout = 3000
}))
end
function action_download()
local nixio = require "nixio"
local http = require "luci.http"
local sys = require "luci.sys"
local uci = require "luci.model.uci".cursor()
local dir = uci:get_first("nlbwmon", "nlbwmon", "database_directory")
or "/var/lib/nlbwmon"
if dir and nixio.fs.stat(dir, "type") == "dir" then
local n = "nlbwmon-backup-%s-%s.tar.gz"
%{ sys.hostname(), os.date("%Y-%m-%d") }
http.prepare_content("application/octet-stream")
http.header("Content-Disposition", "attachment; filename=\"%s\"" % n)
exec("/bin/tar", { "-C", dir, "-c", "-z", ".", "-f", "-" }, http.write)
else
http.status(500, "Unable to find database directory")
end
end
function action_restore()
local nixio = require "nixio"
local http = require "luci.http"
local i18n = require "luci.i18n"
local tpl = require "luci.template"
local uci = require "luci.model.uci".cursor()
local tmp = "/tmp/nlbw-restore.tar.gz"
local dir = uci:get_first("nlbwmon", "nlbwmon", "database_directory")
or "/var/lib/nlbwmon"
local fp
http.setfilehandler(
function(meta, chunk, eof)
if not fp and meta and meta.name == "archive" then
fp = io.open(tmp, "w")
end
if fp and chunk then
fp:write(chunk)
end
if fp and eof then
fp:close()
end
end)
local files = { }
local tar = io.popen("/bin/tar -tzf %s" % tmp, "r")
if tar then
while true do
local file = tar:read("*l")
if not file then
break
elseif file:match("^%d%d%d%d%d%d%d%d%.db%.gz$") or
file:match("^%./%d%d%d%d%d%d%d%d%.db%.gz$") then
files[#files+1] = file
end
end
tar:close()
end
if #files == 0 then
http.status(500, "Internal Server Error")
tpl.render("nlbw/backup", {
message = i18n.translate("Invalid or empty backup archive")
})
return
end
local output = { }
exec("/etc/init.d/nlbwmon", { "stop" })
exec("/bin/mkdir", { "-p", dir })
exec("/bin/tar", { "-C", dir, "-vxzf", tmp, unpack(files) },
function(chunk) output[#output+1] = chunk:match("%S+") end)
exec("/bin/rm", { "-f", tmp })
exec("/etc/init.d/nlbwmon", { "start" })
tpl.render("nlbw/backup", {
message = i18n.translatef(
"The following database files have been restored: %s",
table.concat(output, ", "))
})
end
function action_commit()
local http = require "luci.http"
local disp = require "luci.dispatcher"
http.redirect(disp.build_url("admin/nlbw/display"))
exec("/usr/sbin/nlbw", { "-c", "commit" })
end
|
