applications/luci-asterisk: add initial code for the asterisk interface library

1 files changed, 198 insertions, 0 deletions

diff --git a/applications/luci-asterisk/luasrc/asterisk.lua b/applications/luci-asterisk/luasrc/asterisk.lua
new file mode 100644
index 000000000..c1b099dc5
--- /dev/null
+++ b/applications/luci-asterisk/luasrc/asterisk.lua
@@ -0,0 +1,198 @@
+--[[
+LuCI - Lua Configuration Interface
+Asterisk PBX interface library
+
+Copyright 2009 Jo-Philipp Wich <xm@subsignal.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+$Id$
+
+]]--
+
+module("luci.asterisk", package.seeall)
+
+local _io  = require("io")
+local sys  = require("luci.sys")
+local util = require("luci.util")
+
+AST_BIN   = "/usr/sbin/asterisk"
+AST_FLAGS = "-r -x"
+
+
+--- LuCI Asterisk io interface
+-- Handles low level io.
+-- @type	module
+io = luci.util.class()
+
+--- Execute command and return output
+-- @param command	String containing the command to execute
+-- @return			String containing the command output
+function io.exec(command)
+	local fh = _io.popen( "%s %s %q" %{ AST_BIN, AST_FLAGS, command }, "r" )
+	assert(fh, "Failed to invoke asterisk")
+
+	local buffer = fh:read("*a")
+	fh:close()
+	return buffer
+end
+
+--- Execute command and invoke given callback for each readed line
+-- @param command	String containing the command to execute
+-- @param callback	Function to call back for each line
+-- @return			Always true
+function io.execl(command, callback)
+	local ln
+	local fh = _io.popen( "%s %s %q" %{ AST_BIN, AST_FLAGS, command }, "r" )
+	assert(fh, "Failed to invoke asterisk")
+
+	repeat
+		ln = fh:read("*l")
+		callback(ln)
+	until not ln
+
+	fh:close()
+	return true
+end
+
+--- Execute command and return an iterator that returns one line per invokation
+-- @param command	String containing the command to execute
+-- @return			Iterator function
+function io.execi(command)
+	local fh = _io.popen( "%s %s %q" %{ AST_BIN, AST_FLAGS, command }, "r" )
+	assert(fh, "Failed to invoke asterisk")
+
+	return function()
+		local ln = fh:read("*l")
+		if not ln then fh:close() end
+		return ln
+	end
+end
+
+
+--- LuCI Asterisk - core status
+core = luci.util.class()
+
+--- Retrive version string.
+-- @return	String containing the reported asterisk version
+function core.version(self)
+	local version = io.exec("core show version")
+	return version:gsub(" *\n", "")
+end
+
+
+--- LuCI Asterisk - SIP information.
+-- @type module
+sip = luci.util.class()
+
+--- Get a list of known SIP peers
+-- @return		Table containing each SIP peer
+function sip.peers(self)
+	local head  = false
+	local peers = { }
+
+	for line in io.execi("sip show peers") do
+		if not head then
+			head = true
+		elseif not line:match(" sip peers ") then
+			local online, delay, id, uid
+			local name, host, dyn, nat, acl, port, status =
+				line:match("(.-) +(.-) +([D ])   ([N ])   (.)  (%d+) +(.+)")
+
+			if host == '(Unspecified)' then host = nil end
+			if port == '0' then port = nil else port = tonumber(port) end
+
+			dyn = ( dyn == 'D' and true or false )
+			nat = ( nat == 'N' and true or false )
+			acl = ( acl ~= ' ' and true or false )
+
+			online, delay = status:match("(OK) %((%d+) ms%)")
+
+			if online == 'OK' then
+				online = true
+				delay  = tonumber(delay)
+			elseif status ~= 'Unmonitored' then
+				online = false
+				delay  = 0
+			else
+				online = nil
+				delay  = 0
+			end
+
+			id, uid = name:match("(.+)/(.+)")
+
+			if not ( id and uid ) then
+				id  = name .. "..."
+				uid = nil
+			end
+
+			peers[#peers+1] = {
+				online  = online,
+				delay   = delay,
+				name    = id,
+				user    = uid,
+				dynamic = dyn,
+				nat     = nat,
+				acl     = acl,
+				host    = host,
+				port    = port
+			}
+		end
+	end
+
+	return peers
+end
+
+--- Get informations of given SIP peer
+-- @param peer	String containing the name of the SIP peer
+function sip.peer(peer)
+	local info = { }
+	local keys = { }
+
+	for line in io.execi("sip show peer " .. peer) do
+		if #line > 0 then
+			local key, val = line:match("(.-) *: +(.*)")
+			if key and val then
+
+				key = key:gsub("^ +",""):gsub(" +$", "")
+				val = val:gsub("^ +",""):gsub(" +$", "")
+
+				if key == "* Name" then
+					key = "Name"
+				elseif key == "Addr->IP" then
+					info.address, info.port = val:match("(.+) Port (.+)")
+					info.port = tonumber(info.port)
+				elseif key == "Status" then
+					info.online, info.delay = val:match("(OK) %((%d+) ms%)")
+					if info.online == 'OK' then
+						info.online = true
+						info.delay  = tonumber(info.delay)
+					elseif status ~= 'Unmonitored' then
+						info.online = false
+						info.delay  = 0
+					else
+						info.online = nil
+						info.delay  = 0
+					end
+				end
+
+				if val == 'Yes' or val == 'yes' or val == '<Set>' then
+					val = true
+				elseif val == 'No' or val == 'no' then
+					val = false
+				elseif val == '<Not set>' or val == '(none)' then
+					val = nil
+				end
+
+				keys[#keys+1] = key
+				info[key] = val
+			end
+		end
+	end
+
+	return info, keys
+end