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module(..., package.seeall)
-- Load libraries
require("modelfunctions")
require("validator")
-- Set variables
local configfile = "/etc/opennhrp/opennhrp.conf"
local processname = "opennhrp"
local packagename = "opennhrp"
local interfaceslist, reverseinterfaceslist
local config, configfilecontent
local descr = {
Type = {
['incomplete']="The protocol address is being resolved",
['negative']="This protocol address is not available",
['cached']="Protocol address was resolved successfully",
['route']="This is a dynamic shortcut",
['dynamic']="This entry is from a node that connected to us",
['local']="Local interface address",
['static']="Static mapping from configuration file (e.g. address of core)",
},
Flags= {
-- ['up']="Connection is fully usable",
['lower-up']="ipsec connections is up, but registration is not yet done",
},
}
-- ################################################################################
-- LOCAL FUNCTIONS
local function list_interfaces(self)
if not interfaceslist then
-- Get the list of available interfaces
local interfaces = self:new("alpine-baselayout/interfaces")
local availableinterfaces = interfaces:read()
interfaceslist = {}
reverseinterfaceslist = {}
for i,int in ipairs(availableinterfaces.value) do
interfaceslist[#interfaceslist + 1] = int.value.name.value
reverseinterfaceslist[int.value.name.value] = #interfaceslist
end
interfaces:destroy()
end
return interfaceslist, reverseinterfaceslist
end
local function parseconfigfile(configfilecontent)
local config = {}
local currentinterface
local words = {}
-- remove comments, and then parse word-by-word
for word in string.gmatch(string.gsub(configfilecontent, "#[^\n]*", ""), "%S+") do
words[#words + 1] = word
end
local i=1
while i <= table.maxn(words) do
local word = words[i]
if not currentinterface and word ~= "interface" then
currentinterface = ""
config[""].errtxt = "Syntax error - undefined interface"
end
if word == "interface" then
i = i+1
currentinterface = words[i]
if config[currentinterface] then
config[currentinterface].errtxt = "Syntax error - interface defined multiple times"
else
config[currentinterface] = {}
end
elseif word == "map" then
-- there may be more than one map statement
if not config[currentinterface].map then
config[currentinterface].map = {}
end
local temp = {words[i+1], words[i+2]}
i = i+2
if words[i+1] == "register" then
temp[3] = words[i+1]
i = i+1
end
table.insert(config[currentinterface].map, temp)
elseif word == "dynamic-map" then
-- there may be more than one dynamic-map statement
if not config[currentinterface]["dynamic-map"] then
config[currentinterface]["dynamic-map"] = {}
end
local temp = {words[i+1], words[i+2]}
i = i+2
if words[i+1] == "register" then
temp[3] = words[i+1]
i = i+1
end
table.insert(config[currentinterface]["dynamic-map"], temp)
elseif word == "cisco-authentication" then
config[currentinterface]["cisco-authentication"] = {words[i+1]}
i = i+1
elseif word == "redirect" or word == "shortcut" or word == "non-caching" or word == "shortcut-destination" then
config[currentinterface][word] = {}
else
table.insert(config[currentinterface], word)
end
i = i+1
end
-- Check interfaces for errors
for interf,val in pairs(config) do
if val[1] then
local errtxt = "Syntax error - unrecognized keyword"
if val.errtxt then
val.errtxt = val.errtxt .. "\n" .. errtxt
else
val.errtxt = errtxt
end
end
end
return config
end
local function validateconfigfile(self, configfile)
local config = parseconfigfile(configfile.value.filecontent.value)
list_interfaces(self)
local errtxt = {}
for name,value in pairs(config) do
if name ~= "" and not reverseinterfaceslist[name] then
errtxt[#errtxt + 1] = name .. " - Nonexistant interface"
end
if value.errtxt then
errtxt[#errtxt + 1] = name .. " - " .. string.gsub(value.errtxt, "\n", "\n"..name.." - ")
end
end
if #errtxt then
configfile.value.filecontent.errtxt = table.concat(errtxt, "\n")
end
return configfile
end
local function validateinterfacedetails(interfacedetails)
local success = modelfunctions.validateselect(interfacedetails.value.type)
for i,map in ipairs(interfacedetails.value.map.value) do
local words = {}
for word in string.gmatch(map, "%S+") do words[#words+1] = word end
if not words[1] or not words[2] or (words[3] and words[3] ~= "register") or words[4] then
interfacedetails.value.map.errtxt = "Syntax error on line "..i
success = false
break
end
end
for i,map in ipairs(interfacedetails.value["dynamic-map"].value) do
local words = {}
for word in string.gmatch(map, "%S+") do words[#words+1] = word end
if not words[1] or not words[2] or (words[3] and words[3] ~= "register") or words[4] then
interfacedetails.value["dynamic-map"].errtxt = "Syntax error on line "..i
success = false
break
end
end
if not interfacedetails.value.interface.value or string.find(interfacedetails.value.interface.value, "%s") then
interfacedetails.value.interface.errtxt = "Invalid interface name"
success = false
end
return success, interfacedetails
end
-- ################################################################################
-- PUBLIC FUNCTIONS
function startstop_service(action)
return modelfunctions.startstop_service(processname, action)
end
function getstatus()
return modelfunctions.getstatus(processname, packagename, "OpenNHRP Status")
end
function getshowreport()
local peers_list = cfe({ type="structure", value={}, label="Peers" })
local opennhrpstatus = cfe({ value="Show report not available", label="Status" })
local cmd = "/usr/sbin/opennhrpctl show 2>/dev/null"
local f = io.popen( cmd )
local content = f:read("*a")
f:close()
local current
for line in string.gmatch(content, "([^\n]*)\n?") do
if string.find(line, "^Status:") then
opennhrpstatus.value = string.match(line, ":%s*(%w+)")
elseif string.find(line,"^Interface:") then
local intf = string.match(line, ":%s*(%w+)")
current = {}
peers_list.value[intf] = peers_list.value[intf] or {}
table.insert(peers_list.value[intf], current)
elseif ( current ) and (line ~= "") then
local name,val = string.match(line,"^(.-):%s?(.*)")
if name and val then
current[name] = cfe({value=val, label=name})
if (type(descr[name]) == "table") then
current[name].descr = descr[name][val]
end
end
end
end
return cfe({ type="group", value={peers_list=peers_list, status=opennhrpstatus}, label="OpenNHRP Show Report" })
end
function getinterfacedetails(interface)
local details = {}
details.interface = cfe({ value=interface, label="Interface" })
details.type = cfe({ type="select", value="Unused", label="Interface type", option={"Unused", "NHRP Enabled", "Shortcut Destination"} })
details.map = cfe({ type="list", value={}, label="Static Peers", descr="List of static peer mappings of protocol-address to nbma-address. Optional 'register' parameter specifies Registration Request sent to this peer on startup. (protocol-address[/prefix] nbma-address [register])" })
details["dynamic-map"] = cfe({ type="list", value={}, label="Dynamic Peers", descr="List of dynamic peer mappings of protocol-address to nbma-address. Optional 'register' parameter specifies Registration Request sent to this peer on startup. (protocol-address[/prefix] nbma-address [register])" })
configfilecontent = configfilecontent or fs.read_file(configfile) or ""
config = config or parseconfigfile(configfilecontent)
if config and config[interface] then
if config[interface]["shortcut-destination"] then
details.type.value = "Shortcut Destination"
else
details.type.value = "NHRP Enabled"
end
for i,map in ipairs(config[interface].map or {}) do
table.insert(details.map.value, table.concat(map, " "))
end
for i,map in ipairs(config[interface]["dynamic-map"] or {}) do
table.insert(details["dynamic-map"].value, table.concat(map, " "))
end
details.interface.errtxt = config[interface].errtxt
end
return cfe({ type="group", value=details, label="OpenNHRP Interface Configuration" })
end
function updateinterfacedetails(interfacedetails)
local success, interfacedetails = validateinterfacedetails(interfacedetails)
if success then
configfilecontent = configfilecontent or fs.read_file(configfile) or ""
local startchar = string.find(configfilecontent or "", "interface%s+"..interfacedetails.value.interface.value)
local lines = {}
if startchar then
lines[1] = string.gsub(string.sub(configfilecontent, 1, startchar-1), "\n+$", "")
startchar = string.find(configfilecontent, "interface", startchar+1)
if startchar then
lines[2] = string.sub(configfilecontent, startchar, -1)
end
else
lines[1] = string.gsub(configfilecontent or "", "\n+$", "")
end
if interfacedetails.value.type.value ~= "Unused" then
local intflines = {"interface "..interfacedetails.value.interface.value}
if interfacedetails.value.type.value == "Shortcut Destination" then
intflines[2] = "\tshortcut-destination"
else
for i,map in ipairs(interfacedetails.value.map.value) do
table.insert(intflines, "\tmap "..map)
end
for i,map in ipairs(interfacedetails.value["dynamic-map"].value) do
table.insert(intflines, "\tdynamic-map "..map)
end
config = config or parseconfigfile(configfilecontent)
local intfconfig = config[interfacedetails.value.interface.value] or {}
intfconfig.map = nil
intfconfig["dynamic-map"] = nil
intfconfig["shortcut-destination"] = nil
for name,arr in pairs(intfconfig) do
if type(name) ~= "number" and name ~= "errtxt" then
table.insert(intflines, "\t"..name.." "..table.concat(arr, " "))
end
end
end
table.insert(lines, 2, table.concat(intflines, "\n"))
end
fs.write_file(configfile, table.concat(lines, "\n"))
configfilecontent = nil
config = nil
else
interfacedetails.errtxt = "Failed to save Interface Details"
end
return interfacedetails
end
function listinterfaces(self)
local interfaces = {}
list_interfaces(self)
configfilecontent = configfilecontent or fs.read_file(configfile) or ""
config = config or parseconfigfile(configfilecontent)
for name,intf in pairs(config) do
temp = {interface=name, type="NHRP Enabled", errtxt=intf.errtxt}
if intf["shortcut-destination"] then
temp.type = "Shortcut Destination"
end
if not reverseinterfaceslist[name] then
local errtxt = "Nonexistant interface"
if temp.errtxt then
temp.errtxt = temp.errtxt .. "\n" .. errtxt
else
temp.errtxt = errtxt
end
end
table.insert(interfaces, temp)
end
for i,name in ipairs(interfaceslist) do
if not config[name] then
table.insert(interfaces, {interface=name, type="Unused"})
end
end
return cfe({ type="structure", value=interfaces, label="OpenNHRP Interfaces" })
end
function getconfigfile(self)
return validateconfigfile(self, modelfunctions.getfiledetails(configfile))
end
function setconfigfile(self, filedetails)
filedetails = modelfunctions.setfiledetails(filedetails, {configfile})
if not filedetails.errtxt then
configfilecontent = nil
config = nil
end
return validateconfigfile(self, filedetails)
end
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