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
230
231
232
233
|
-- Copyright 2008 Steven Barth <steven@midlink.org>
-- Licensed to the public under the Apache License 2.0.
local os = require "os"
local uci = require "uci"
local util = require "luci.util"
local table = require "table"
local setmetatable, rawget, rawset = setmetatable, rawget, rawset
local require, getmetatable = require, getmetatable
local error, pairs, ipairs = error, pairs, ipairs
local type, tostring, tonumber, unpack = type, tostring, tonumber, unpack
-- The typical workflow for UCI is: Get a cursor instance from the
-- cursor factory, modify data (via Cursor.add, Cursor.delete, etc.),
-- save the changes to the staging area via Cursor.save and finally
-- Cursor.commit the data to the actual config files.
-- LuCI then needs to Cursor.apply the changes so deamons etc. are
-- reloaded.
module "luci.model.uci"
cursor = uci.cursor
APIVERSION = uci.APIVERSION
function cursor_state()
return cursor(nil, "/var/state")
end
inst = cursor()
inst_state = cursor_state()
local Cursor = getmetatable(inst)
function Cursor.apply(self, configlist, command)
configlist = self:_affected(configlist)
if command then
return { "/sbin/luci-reload", unpack(configlist) }
else
return os.execute("/sbin/luci-reload %s >/dev/null 2>&1"
% table.concat(configlist, " "))
end
end
-- returns a boolean whether to delete the current section (optional)
function Cursor.delete_all(self, config, stype, comparator)
local del = {}
if type(comparator) == "table" then
local tbl = comparator
comparator = function(section)
for k, v in pairs(tbl) do
if section[k] ~= v then
return false
end
end
return true
end
end
local function helper (section)
if not comparator or comparator(section) then
del[#del+1] = section[".name"]
end
end
self:foreach(config, stype, helper)
for i, j in ipairs(del) do
self:delete(config, j)
end
end
function Cursor.section(self, config, type, name, values)
local stat = true
if name then
stat = self:set(config, name, type)
else
name = self:add(config, type)
stat = name and true
end
if stat and values then
stat = self:tset(config, name, values)
end
return stat and name
end
function Cursor.tset(self, config, section, values)
local stat = true
for k, v in pairs(values) do
if k:sub(1, 1) ~= "." then
stat = stat and self:set(config, section, k, v)
end
end
return stat
end
function Cursor.get_bool(self, ...)
local val = self:get(...)
return ( val == "1" or val == "true" or val == "yes" or val == "on" )
end
function Cursor.get_list(self, config, section, option)
if config and section and option then
local val = self:get(config, section, option)
return ( type(val) == "table" and val or { val } )
end
return nil
end
function Cursor.get_first(self, conf, stype, opt, def)
local rv = def
self:foreach(conf, stype,
function(s)
local val = not opt and s['.name'] or s[opt]
if type(def) == "number" then
val = tonumber(val)
elseif type(def) == "boolean" then
val = (val == "1" or val == "true" or
val == "yes" or val == "on")
end
if val ~= nil then
rv = val
return false
end
end)
return rv
end
function Cursor.set_list(self, config, section, option, value)
if config and section and option then
return self:set(
config, section, option,
( type(value) == "table" and value or { value } )
)
end
return false
end
-- Return a list of initscripts affected by configuration changes.
function Cursor._affected(self, configlist)
configlist = type(configlist) == "table" and configlist or {configlist}
local c = cursor()
c:load("ucitrack")
-- Resolve dependencies
local reloadlist = {}
local function _resolve_deps(name)
local reload = {name}
local deps = {}
c:foreach("ucitrack", name,
function(section)
if section.affects then
for i, aff in ipairs(section.affects) do
deps[#deps+1] = aff
end
end
end)
for i, dep in ipairs(deps) do
for j, add in ipairs(_resolve_deps(dep)) do
reload[#reload+1] = add
end
end
return reload
end
-- Collect initscripts
for j, config in ipairs(configlist) do
for i, e in ipairs(_resolve_deps(config)) do
if not util.contains(reloadlist, e) then
reloadlist[#reloadlist+1] = e
end
end
end
return reloadlist
end
-- curser, means it the parent unloads or loads configs, the sub state will
-- do so as well.
function Cursor.substate(self)
Cursor._substates = Cursor._substates or { }
Cursor._substates[self] = Cursor._substates[self] or cursor_state()
return Cursor._substates[self]
end
local _load = Cursor.load
function Cursor.load(self, ...)
if Cursor._substates and Cursor._substates[self] then
_load(Cursor._substates[self], ...)
end
return _load(self, ...)
end
local _unload = Cursor.unload
function Cursor.unload(self, ...)
if Cursor._substates and Cursor._substates[self] then
_unload(Cursor._substates[self], ...)
end
return _unload(self, ...)
end
|
