limitations under the License.
]]--
-module("luci.dispatcher", package.seeall)
-require("luci.init")
-require("luci.http")
-require("luci.sys")
-require("luci.fs")
+--- LuCI web dispatcher.
+local fs = require "luci.fs"
+local sys = require "luci.sys"
+local init = require "luci.init"
+local util = require "luci.util"
+local http = require "luci.http"
+
+module("luci.dispatcher", package.seeall)
context = luci.util.threadlocal()
+authenticator = {}
+
-- Index table
local index = nil
local fi
--- Builds a URL
+--- Build the URL relative to the server webroot from given virtual path.
+-- @param ... Virtual path
+-- @return Relative URL
function build_url(...)
return luci.http.getenv("SCRIPT_NAME") .. "/" .. table.concat(arg, "/")
end
--- Sends a 404 error code and renders the "error404" template if available
+--- Send a 404 error code and render the "error404" template if available.
+-- @param message Custom error message (optional)
+-- @return false
function error404(message)
luci.http.status(404, "Not Found")
message = message or "Not Found"
return false
end
--- Sends a 500 error code and renders the "error500" template if available
+--- Send a 500 error code and render the "error500" template if available.
+-- @param message Custom error message (optional)#
+-- @return false
function error500(message)
luci.http.status(500, "Internal Server Error")
return false
end
--- Renders an authorization form
-function sysauth(default)
+function authenticator.htmlauth(validator, accs, default)
local user = luci.http.formvalue("username")
local pass = luci.http.formvalue("password")
- if user and luci.sys.user.checkpasswd(user, pass) then
- local sid = luci.sys.uniqueid(16)
- luci.http.header("Set-Cookie", "sysauth=" .. sid.."; path=/")
- luci.sauth.write(sid, user)
- return true
- else
- require("luci.i18n")
- require("luci.template")
- context.path = {}
- luci.template.render("sysauth", {duser=default, fuser=user})
- return false
+ if user and validator(user, pass) then
+ return user
end
+
+ require("luci.i18n")
+ require("luci.template")
+ context.path = {}
+ luci.template.render("sysauth", {duser=default, fuser=user})
+ return false
+
end
--- Creates a request object for dispatching
+--- Dispatch an HTTP request.
+-- @param request LuCI HTTP Request object
function httpdispatch(request)
luci.http.context.request = request
context.request = {}
table.insert(context.request, node)
end
- dispatch(context.request)
+ local stat, err = util.copcall(dispatch, context.request)
+ if not stat then
+ error500(err)
+ end
+
luci.http.close()
+
+ --context._disable_memtrace()
end
--- Dispatches a request
+--- Dispatches a LuCI virtual path.
+-- @param request Virtual path
function dispatch(request)
- context.path = request
+ --context._disable_memtrace = require "luci.debug".trap_memtrace()
+ local ctx = context
+ ctx.path = request
- require("luci.i18n")
- luci.i18n.setlanguage(require("luci.config").main.lang)
+ require "luci.i18n".setlanguage(require "luci.config".main.lang)
- if not context.tree then
- createtree()
+ local c = ctx.tree
+ local stat
+ if not c then
+ c = createtree()
end
- local c = context.tree
local track = {}
+ local args = {}
+ context.args = args
+ local n
for i, s in ipairs(request) do
c = c.nodes[s]
- if not c or c.leaf then
+ n = i
+ if not c then
+ break
+ end
+
+ util.update(track, c)
+
+ if c.leaf then
break
end
+ end
- for k, v in pairs(c) do
- track[k] = v
+ if c and c.leaf then
+ for j=n+1, #request do
+ table.insert(args, request[j])
end
end
end
-- Init template engine
- local tpl = require("luci.template")
- local viewns = {}
- tpl.context.viewns = viewns
- viewns.write = luci.http.write
- viewns.translate = function(...) return require("luci.i18n").translate(...) end
- viewns.controller = luci.http.getenv("SCRIPT_NAME")
- viewns.media = luci.config.main.mediaurlbase
- viewns.resource = luci.config.main.resourcebase
- viewns.REQUEST_URI = luci.http.getenv("SCRIPT_NAME") .. (luci.http.getenv("PATH_INFO") or "")
+ if not track.notemplate then
+ local tpl = require("luci.template")
+ local viewns = setmetatable({}, {__index=_G})
+ tpl.context.viewns = viewns
+ viewns.write = luci.http.write
+ viewns.include = function(name) tpl.Template(name):render(getfenv(2)) end
+ viewns.translate = function(...) return require("luci.i18n").translate(...) end
+ viewns.striptags = util.striptags
+ viewns.controller = luci.http.getenv("SCRIPT_NAME")
+ viewns.media = luci.config.main.mediaurlbase
+ viewns.resource = luci.config.main.resourcebase
+ viewns.REQUEST_URI = (luci.http.getenv("SCRIPT_NAME") or "") .. (luci.http.getenv("PATH_INFO") or "")
+ end
+
+ track.dependent = (track.dependent ~= false)
+ assert(not track.dependent or not track.auto, "Access Violation")
if track.sysauth then
- require("luci.sauth")
+ local sauth = require "luci.sauth"
+
+ local authen = type(track.sysauth_authenticator) == "function"
+ and track.sysauth_authenticator
+ or authenticator[track.sysauth_authenticator]
+
local def = (type(track.sysauth) == "string") and track.sysauth
local accs = def and {track.sysauth} or track.sysauth
- local user = luci.sauth.read(luci.http.getcookie("sysauth"))
+ local sess = ctx.authsession or luci.http.getcookie("sysauth")
+ sess = sess and sess:match("^[A-F0-9]+$")
+ local user = sauth.read(sess)
-
- if not luci.util.contains(accs, user) then
- if not sysauth(def) then
+ if not util.contains(accs, user) then
+ if authen then
+ local user, sess = authen(luci.sys.user.checkpasswd, accs, def)
+ if not user or not util.contains(accs, user) then
+ return
+ else
+ local sid = sess or luci.sys.uniqueid(16)
+ luci.http.header("Set-Cookie", "sysauth=" .. sid.."; path=/")
+ if not sess then
+ sauth.write(sid, user)
+ end
+ ctx.authsession = sid
+ end
+ else
+ luci.http.status(403, "Forbidden")
return
end
end
if c and type(c.target) == "function" then
context.dispatched = c
- stat, mod = luci.util.copcall(require, c.module)
- if stat then
- luci.util.updfenv(c.target, mod)
- end
- stat, err = luci.util.copcall(c.target)
- if not stat then
- error500(err)
- end
+ util.copcall(function()
+ local oldenv = getfenv(c.target)
+ local module = require(c.module)
+ local env = setmetatable({}, {__index=
+
+ function(tbl, key)
+ return rawget(tbl, key) or module[key] or oldenv[key]
+ end})
+
+ setfenv(c.target, env)
+ end)
+
+ c.target(unpack(args))
else
error404()
end
end
--- Generates the dispatching tree
+--- Generate the dispatching index using the best possible strategy.
function createindex()
- local path = luci.sys.libpath() .. "/controller/"
+ local path = luci.util.libpath() .. "/controller/"
local suff = ".lua"
if luci.util.copcall(require, "luci.fastindex") then
end
end
--- Uses fastindex to create the dispatching tree
+--- Generate the dispatching index using the fastindex C-indexer.
+-- @param path Controller base directory
+-- @param suffix Controller file suffix
function createindex_fastindex(path, suffix)
index = {}
end
end
--- Calls the index function of all available controllers
--- Fallback for transition purposes / Leave it in as long as it works otherwise throw it away
+--- Generate the dispatching index using the native file-cache based strategy.
+-- @param path Controller base directory
+-- @param suffix Controller file suffix
function createindex_plain(path, suffix)
+ if indexcache then
+ local cachedate = fs.mtime(indexcache)
+ if cachedate and cachedate > fs.mtime(path) then
+
+ assert(
+ sys.process.info("uid") == fs.stat(indexcache, "uid")
+ and fs.stat(indexcache, "mode") == "rw-------",
+ "Fatal: Indexcache is not sane!"
+ )
+
+ index = loadfile(indexcache)()
+ return index
+ end
+ end
+
index = {}
- local cache = nil
-
- local controllers = luci.util.combine(
+ local controllers = util.combine(
luci.fs.glob(path .. "*" .. suffix) or {},
luci.fs.glob(path .. "*/*" .. suffix) or {}
)
-
- if indexcache then
- cache = luci.fs.mtime(indexcache)
-
- if not cache then
- luci.fs.mkdir(indexcache)
- luci.fs.chmod(indexcache, "a=,u=rwx")
- cache = luci.fs.mtime(indexcache)
- end
- end
for i,c in ipairs(controllers) do
local module = "luci.controller." .. c:sub(#path+1, #c-#suffix):gsub("/", ".")
- local cachefile
- local stime
- local ctime
+ local mod = require(module)
+ local idx = mod.index
- if cache then
- cachefile = indexcache .. "/" .. module
- stime = luci.fs.mtime(c) or 0
- ctime = luci.fs.mtime(cachefile) or 0
+ if type(idx) == "function" then
+ index[module] = idx
end
-
- if not cache or stime > ctime then
- stat, mod = luci.util.copcall(require, module)
+ end
- if stat and mod and type(mod.index) == "function" then
- index[module] = mod.index
-
- if cache then
- luci.fs.writefile(cachefile, luci.util.dump(mod.index))
- end
- end
- else
- index[module] = loadfile(cachefile)
- end
+ if indexcache then
+ fs.writefile(indexcache, util.get_bytecode(index))
+ fs.chmod(indexcache, "a-rwx,u+rw")
end
end
--- Creates the dispatching tree from the index
+--- Create the dispatching tree from the index.
+-- Build the index before if it does not exist yet.
function createtree()
if not index then
createindex()
end
- context.tree = {nodes={}}
- require("luci.i18n")
-
+ local ctx = context
+ local tree = {nodes={}}
+
+ ctx.treecache = setmetatable({}, {__mode="v"})
+ ctx.tree = tree
+
-- Load default translation
- luci.i18n.loadc("default")
+ require "luci.i18n".loadc("default")
- local scope = luci.util.clone(_G)
- for k,v in pairs(luci.dispatcher) do
- if type(v) == "function" then
- scope[k] = v
- end
- end
+ local scope = setmetatable({}, {__index = luci.dispatcher})
for k, v in pairs(index) do
scope._NAME = k
setfenv(v, scope)
-
- local stat, err = luci.util.copcall(v)
- if not stat then
- error500("createtree failed: " .. k .. ": " .. err)
- luci.http.close()
- os.exit(1)
- end
+ v()
end
+
+ return tree
end
--- Reassigns a node to another position
+--- Clone a node of the dispatching tree to another position.
+-- @param path Virtual path destination
+-- @param clone Virtual path source
+-- @param title Destination node title (optional)
+-- @param order Destination node order value (optional)
+-- @return Dispatching tree node
function assign(path, clone, title, order)
local obj = node(unpack(path))
obj.nodes = nil
return obj
end
--- Shortcut for creating a dispatching node
+--- Create a new dispatching node and define common parameters.
+-- @param path Virtual path
+-- @param target Target function to call when dispatched.
+-- @param title Destination node title
+-- @param order Destination node order value (optional)
+-- @return Dispatching tree node
function entry(path, target, title, order)
local c = node(unpack(path))
return c
end
--- Fetch a dispatching node
+--- Fetch or create a new dispatching node.
+-- @param ... Virtual path
+-- @return Dispatching tree node
function node(...)
- local c = context.tree
- arg.n = nil
-
- for k,v in ipairs(arg) do
- if not c.nodes[v] then
- c.nodes[v] = {nodes={}}
- end
-
- c = c.nodes[v]
- end
+ local c = _create_node(arg)
c.module = getfenv(2)._NAME
c.path = arg
+ c.auto = nil
return c
end
+function _create_node(path, cache)
+ if #path == 0 then
+ return context.tree
+ end
+
+ cache = cache or context.treecache
+ local name = table.concat(path, ".")
+ local c = cache[name]
+
+ if not c then
+ local last = table.remove(path)
+ c = _create_node(path, cache)
+
+ local new = {nodes={}, auto=true}
+ c.nodes[last] = new
+ cache[name] = new
+
+ return new
+ else
+ return c
+ end
+end
+
-- Subdispatchers --
+
+--- Create a redirect to another dispatching node.
+-- @param ... Virtual path destination
function alias(...)
local req = arg
return function()
end
end
+--- Rewrite the first x path values of the request.
+-- @param n Number of path values to replace
+-- @param ... Virtual path to replace removed path values with
function rewrite(n, ...)
local req = arg
return function()
end
end
+--- Create a function-call dispatching target.
+-- @param name Target function of local controller
+-- @param ... Additional parameters passed to the function
function call(name, ...)
local argv = {...}
return function() return getfenv()[name](unpack(argv)) end
end
+--- Create a template render dispatching target.
+-- @param name Template to be rendered
function template(name)
- require("luci.template")
- return function() luci.template.render(name) end
+ return function()
+ require("luci.template")
+ luci.template.render(name)
+ end
end
+--- Create a CBI model dispatching target.
+-- @param model CBI model tpo be rendered
function cbi(model)
- require("luci.cbi")
- require("luci.template")
+ return function(...)
+ require("luci.cbi")
+ require("luci.template")
- return function()
- local stat, maps = luci.util.copcall(luci.cbi.load, model)
- if not stat then
- error500(maps)
- return true
- end
+ maps = luci.cbi.load(model, ...)
for i, res in ipairs(maps) do
- local stat, err = luci.util.copcall(res.parse, res)
- if not stat then
- error500(err)
- return true
- end
+ res:parse()
end
luci.template.render("cbi/header")
luci.template.render("cbi/footer")
end
end
+
+--- Create a CBI form model dispatching target.
+-- @param model CBI form model tpo be rendered
+function form(model)
+ return function(...)
+ require("luci.cbi")
+ require("luci.template")
+
+ maps = luci.cbi.load(model, ...)
+
+ for i, res in ipairs(maps) do
+ res:parse()
+ end
+
+ luci.template.render("header")
+ for i, res in ipairs(maps) do
+ res:render()
+ end
+ luci.template.render("footer")
+ end
+end