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* new project: ff-luci - Freifunk Lua Configuration Interface

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This commit is contained in:
Jo-Philipp Wich
2008-03-02 21:52:58 +00:00
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<?xml version="1.0" encoding="UTF-8"?>
<buildpath>
<buildpathentry kind="src" path="src"/>
<buildpathentry kind="con" path="org.eclipse.dltk.launching.INTERPRETER_CONTAINER"/>
</buildpath>

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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>ffluci</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
</buildSpec>
<natures>
<nature>org.eclipse.dltk.lua.core.nature</nature>
</natures>
</projectDescription>

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LUAC = luac
LUAC_OPTIONS = -s
FILES = ffluci/config.lua
CFILES = ffluci/util.lua ffluci/http.lua \
ffluci/fs.lua ffluci/i18n.lua ffluci/model/uci.lua \
ffluci/template.lua ffluci/dispatcher.lua ffluci/menu.lua ffluci/init.lua
DIRECTORIES = dist/ffluci/model dist/ffluci/controller/public dist/ffluci/controller/admin dist/ffluci/i18n dist/ffluci/view
INFILES = $(CFILES:%=src/%)
OUTFILE = ffluci/init.lua
all: compile
dist-compile: compile examples
dist-source: source examples
examples:
cp src/ffluci/controller/public/* dist/ffluci/controller/public/
cp src/ffluci/controller/admin/* dist/ffluci/controller/admin/
cp src/ffluci/i18n/* dist/ffluci/i18n/
cp src/ffluci/view/* dist/ffluci/view/ -R
compile:
mkdir -p $(DIRECTORIES)
$(LUAC) $(LUAC_OPTIONS) -o dist/$(OUTFILE) $(INFILES)
for i in $(CFILES); do [ -f dist/$$i ] || ln -s `dirname $$i | cut -s -d / -f 2- | sed -e 's/[^/]*\/*/..\//g'``basename $(OUTFILE)` dist/$$i; done
for i in $(FILES); do cp src/$$i dist/$$i; done
source:
mkdir -p $(DIRECTORIES)
for i in $(CFILES); do cp src/$$i dist/$$i; done
for i in $(FILES); do cp src/$$i dist/$$i; done
.PHONY: clean
clean:
rm dist -rf

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FFLuCI - Freifunk Lua Configuration Interface
This is a leightweight MVC-Webframework for small embedded device.
It uses the the Lua programming language and relies on Haserl.
It consists of several parts:
MVC Dispatcher
Simple PATH_INFO based dispatching mechanism using Lua modules
> See src/ffluci/dispatcher.lua for a detailed description
> See src/ffluci/controller for example controllers
Template engine
Support for plain and compiled templates, on-demand compiling support
Short markups:
<% Lua-Code %>
<%= Lua-Code with return value %>
<%:i18nkey default translation%>
<%+template-to-be-included%>
<%~uci.short.cut%>
Predefined variables for controller dir and media dir
> See src/ffluci/template.lua for details
> See src/view/ for examples
i18n Translation support
Simple multi-language per-module internationalization support
> See src/ffluci/i18n.lua for details
> See src/i18n/ for examples
UCI wrapper support
Lua UCI-Wrapper adapting the CLI of the uci binary
> See src/model/uci.lua for details
Menu Building support
Supports menu building for modules and exported actions
> See src/ffluci/menu.lua for details
> See src/ffluci/view/menu.htm, src/ffluci/controller for examples
HTTP-Abstraction and Formvalue validation support
HTTP-Redirect, Statuscode, Content-Type abstraction
Dynamic formvalue validation support including varaible type and
value range validation
> See src/ffluci/http.lua for details
> See src/ffluci/controller/public/example-action.lua for examples

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#!/usr/bin/haserl --shell=luac
package.path = "/usr/lib/lua/?.lua;/usr/lib/lua/?/init.lua;" .. package.path
package.cpath = "/usr/lib/lua/?.so;" .. package.cpath
require("ffluci").dispatch()

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contrib/index.cgi Executable file
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#!/usr/bin/haserl --shell=luac
print("Status: 302 Found")
print("Location: /cgi-bin/ffluci\n")

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include $(TOPDIR)/rules.mk
PKG_NAME:=ffluci
PKG_VERSION:=0.1
PKG_RELEASE:=1
PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
PKG_INSTALL_DIR:=$(PKG_BUILD_DIR)/ipkg-install
MAKE_ACTION:=dist-source
include $(INCLUDE_DIR)/package.mk
define Package/ffluci
SECTION:=admin
CATEGORY:=Administration
TITLE:=FFLuCI
DEPENDS:=+liblua +luafilesystem +haserl
MAINTAINER:=Steven Barth <steven-at-midlink-dot-org>
endef
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/ -R
endef
define Build/Configure
endef
define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR) dist-source
endef
define Package/ffluci/install
$(INSTALL_DIR) $(1)/usr/lib/lua
$(INSTALL_DIR) $(1)/www/cgi-bin
$(CP) $(PKG_BUILD_DIR)/dist/* $(1)/usr/lib/lua/ -R
$(INSTALL_BIN) $(PKG_BUILD_DIR)/contrib/ffluci $(1)/www/cgi-bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/contrib/index.cgi $(1)/www/cgi-bin
$(CP) -a ./ipkg/ffluci.postinst $(1)/CONTROL/postinst
endef
$(eval $(call BuildPackage,ffluci))

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#!/bin/sh
PATTERN='/cgi-bin/ffluci/admin:root:$p$root'
grep $PATTERN ${IPKG_INSTROOT}/etc/httpd.conf >/dev/null 2>/dev/null || echo $PATTERN >> ${IPKG_INSTROOT}/etc/httpd.conf
[ -z ${IPKG_INSTROOT} ] && /etc/init.d/httpd restart

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contrib/package/ffluci/src Symbolic link
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../../..

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#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# $Id$
include $(TOPDIR)/rules.mk
PKG_NAME:=haserl
PKG_VERSION:=0.9.22
PKG_RELEASE:=1
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=@SF/haserl
PKG_MD5SUM:=b791150f2e5704d03b1fb698f4edc6c0
include $(INCLUDE_DIR)/package.mk
define Package/haserl
SECTION:=utils
CATEGORY:=Utilities
TITLE:=A CGI wrapper to embed shell scripts in HTML documents
URL:=http://haserl.sourceforge.net/
DEPENDS:=+liblua
endef
CONFIGURE_ARGS += \
--with-lua
define Package/haserl/install
$(INSTALL_DIR) $(1)/usr/bin
$(STRIP) $(PKG_BUILD_DIR)/src/haserl
$(INSTALL_BIN) $(PKG_BUILD_DIR)/src/haserl $(1)/usr/bin/
endef
$(eval $(call BuildPackage,haserl))

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include $(TOPDIR)/rules.mk
PKG_NAME:=luafilesystem
PKG_VERSION:=1.4.0
PKG_RELEASE:=1
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://luaforge.net/frs/download.php/3158
PKG_MD5SUM:=6f3d247f27820b8f045431ad81bcd3ad
PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
PKG_INSTALL_DIR:=$(PKG_BUILD_DIR)/ipkg-install
include $(INCLUDE_DIR)/package.mk
define Package/luafilesystem
SECTION:=lib
CATEGORY:=Libraries
TITLE:=Lua FS library
URL:=http://www.keplerproject.org/luafilesystem/
DEPENDS:=+liblua
MAINTAINER:=Steven Barth <steven-at-midlink-dot-org>
endef
define Build/Configure
endef
define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR) \
CC="$(TARGET_CROSS)gcc" \
LD="$(TARGET_CROSS)ld" \
AR="$(TARGET_CROSS)ar rcu" \
RANLIB="$(TARGET_CROSS)ranlib" \
INSTALL_ROOT=/usr \
LUA_INC=$(STAGING_DIR)/usr/include
endef
define Package/luafilesystem/install
$(INSTALL_DIR) $(1)/usr/lib/lua
$(STRIP) $(PKG_BUILD_DIR)/src/lfs.so
$(INSTALL_BIN) $(PKG_BUILD_DIR)/src/lfs.so $(1)/usr/lib/lua
endef
$(eval $(call BuildPackage,luafilesystem))

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--[[
FFLuCI - Configuration
Description:
Some FFLuCI configuration values
ToDo:
Port over to UCI
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.config", package.seeall)
-- This is where stylesheets and images go
mediaurlbase = "/ffluci/media"
-- Does anybody think about browser autodetect here?
-- Too bad busybox doesn't populate HTTP_ACCEPT_LANGUAGE
lang = "de"

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module(..., package.seeall)
function dispatcher(request)
require("ffluci.template").render("header")
print("Hello there, Mr. Administrator")
require("ffluci.template").render("footer")
end
menu = {
descr = "Administrative",
order = 10,
entries = {
{action = "index", descr = "Hello"}
}
}

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-- This example demonstrates the action dispatcher which invokes
-- an appropriate action function named action_"action"
-- This example consists of:
-- ffluci/controller/index/example-action.lua (this file)
-- Try the following address(es) in your browser:
-- ffluci/index/example-action
-- ffluci/index/example-action/sp
-- ffluci/index/example-action/redir
module(..., package.seeall)
dispatcher = require("ffluci.dispatcher").action
menu = {
descr = "Example Action",
order = 30,
entries = {
{action = "index", descr = "Action-Dispatcher Example"},
{action = "sp", descr = "Simple View Template Stealing"},
{action = "redir", descr = "Hello World Redirector"}
}
}
function action_index()
require("ffluci.template").render("header")
local formvalue = require("ffluci.http").formvalue
local x = formvalue("x", nil, true)
print(x and "x*x: "..tostring(x*x) or "Set ?x= any number")
require("ffluci.template").render("footer")
end
function action_sp()
require("ffluci.http")
require("ffluci.i18n")
require("ffluci.config")
require("ffluci.template")
-- Try uncommenting the next line
-- ffluci.i18n.loadc("example-simpleview")
ffluci.template.render("example-simpleview/index")
end
function action_redir()
require("ffluci.http").request_redirect("public", "index", "foobar")
end

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-- This example demonstrates the simple view dispatcher which is the
-- most simple way to provide content as it directly renders the
-- associated template
-- This example consists of:
-- ffluci/controller/index/example-simpleview.lua (this file)
-- ffluci/view/example-simpleview/index.htm (the template for action "index")
-- ffluci/view/example-simpleview/foo.htm (the template for action "foo")
-- ffluci/i18n/example-simpleview.de (the german language file for this module)
-- Try the following address(es) in your browser:
-- ffluci/index/example-simpleview
-- ffluci/index/example-simpleview/index
-- ffluci/index/example-simpleview/foo
module(..., package.seeall)
dispatcher = require("ffluci.dispatcher").simpleview
menu = {
descr = "Example Simpleview",
order = 20,
entries = {
{action = "index", descr = "Simpleview Index"},
{action = "foo", descr = "Simpleview Foo"}
}
}

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-- This is a very simple example Hello World FFLuCI controller
-- See the other examples for more automated controllers
-- Initialise Lua module system
module(..., package.seeall)
-- This is the module dispatcher. It implements the last step of the
-- dispatching process.
function dispatcher(request)
require("ffluci.template").render("header")
print("<h2>Hello World!</h2>")
for k,v in pairs(request) do
print("<div>" .. k .. ": " .. v .. "</div>")
end
require("ffluci.template").render("footer")
end
-- The following part is optional it could be useful for menu generators
-- An example menu generator is implemented in the template "menu"
menu = {
-- This is the menu item description
descr = "Hello World",
-- This is the order level of the menu entry (lowest goes first)
order = 10,
-- A list of menu entries in the form action => "description"
entries = {
{action = "index", descr = "Hello World"},
}
}

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--[[
FFLuCI - Dispatcher
Description:
The request dispatcher and module dispatcher generators
The dispatching process:
For a detailed explanation of the dispatching process we assume:
You have installed the FFLuCI CGI-Dispatcher in /cgi-bin/ffluci
To enforce a higher level of security only the CGI-Dispatcher
resides inside the web server's document root, everything else
stays inside an external directory, we assume this is /lua/ffluci
for this explanation.
All controllers and action are reachable as sub-objects of /cgi-bin/ffluci
as if they were virtual folders and files
e.g.: /cgi-bin/ffluci/public/info/about
/cgi-bin/ffluci/admin/network/interfaces
and so on.
The PATH_INFO variable holds the dispatch path and
will be split into three parts: /category/module/action
Category: This is the category in which modules are stored in
By default there are two categories:
"public" - which is the default public category
"admin" - which is the default protected category
As FFLuCI itself does not implement authentication
you should make sure that "admin" and other sensitive
categories are protected by the webserver.
E.g. for busybox add a line like:
/cgi-bin/ffluci/admin:root:$p$root
to /etc/httpd.conf to protect the "admin" category
Module: This is the controller which will handle the request further
It is always a submodule of ffluci.controller, so a module
called "helloworld" will be stored in
/lua/ffluci/controller/helloworld.lua
You are free to submodule your controllers any further.
Action: This is action that will be invoked after loading the module.
The kind of how the action will be dispatched depends on
the module dispatcher that is defined in the controller.
See the description of the default module dispatcher down
on this page for some examples.
The main dispatcher at first searches for the module by trying to
include ffluci.controller.category.module
(where "category" is the category name and "module" is the module name)
If this fails a 404 status code will be send to the client and FFLuCI exits
Then the main dispatcher calls the module dispatcher
ffluci.controller.category.module.dispatcher with the request object
as the only argument. The module dispatcher is then responsible
for the further dispatching process.
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.dispatcher", package.seeall)
require("ffluci.http")
require("ffluci.template")
-- Dispatches the "request"
function dispatch(req)
request = req
local m = "ffluci.controller." .. request.category .. "." .. request.module
local stat, module = pcall(require, m)
if not stat then
return error404()
else
module.request = request
setfenv(module.dispatcher, module)
return module.dispatcher(request)
end
end
-- Sends a 404 error code and renders the "error404" template if available
function error404(message)
message = message or "Not Found"
ffluci.http.status(404, "Not Found")
if not pcall(ffluci.template.render, "error404") then
ffluci.http.textheader()
print(message)
end
return false
end
-- Sends a 500 error code and renders the "error500" template if available
function error500(message)
ffluci.http.status(500, "Internal Server Error")
if not pcall(ffluci.template.render, "error500") then
ffluci.http.textheader()
print(message)
end
return false
end
-- Dispatches a request depending on the PATH_INFO variable
function httpdispatch()
local pathinfo = os.getenv("PATH_INFO") or ""
local parts = pathinfo:gmatch("/[%w-]+")
local sanitize = function(s, default)
return s and s:sub(2) or default
end
local cat = sanitize(parts(), "public")
local mod = sanitize(parts(), "index")
local act = sanitize(parts(), "index")
dispatch({category=cat, module=mod, action=act})
end
-- The Simple View Dispatcher directly renders the template
-- which is placed in ffluci/views/"request.module"/"request.action"
function simpleview(request)
local i18n = require("ffluci.i18n")
local tmpl = require("ffluci.template")
local conf = require("ffluci.config")
local disp = require("ffluci.dispatcher")
pcall(i18n.load, request.module .. "." .. conf.lang)
if not pcall(tmpl.get, request.module .. "/" .. request.action) then
disp.error404()
else
tmpl.render(request.module .. "/" .. request.action)
end
end
-- The Action Dispatcher searches the module for any function called
-- action_"request.action" and calls it
function action(request)
local i18n = require("ffluci.i18n")
local conf = require("ffluci.config")
local disp = require("ffluci.dispatcher")
pcall(i18n.load, request.module .. "." .. conf.lang)
local action = getfenv()["action_" .. request.action:gsub("-", "_")]
if action then
action()
else
disp.error404()
end
end

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--[[
FFLuCI - Filesystem tools
Description:
A module offering often needed filesystem manipulation functions
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.fs", package.seeall)
require("lfs")
-- Returns the content of file
function readfile(filename)
local fp = io.open(filename)
if fp == nil then
error("Unable to open file for reading: " .. filename)
end
local data = fp:read("*a")
fp:close()
return data
end
-- Writes given data to a file
function writefile(filename, data)
local fp = io.open(filename, "w")
if fp == nil then
error("Unable to open file for writing: " .. filename)
end
fp:write(data)
fp:close()
end
-- Returns the file modification date/time of "path"
function mtime(path)
return lfs.attributes(path, "modification")
end
-- Simplified dirname function
function dirname(file)
return string.gsub(file, "[^/]+$", "")
end
-- Diriterator - alias for lfs.dir - filter . and ..
function dir(path)
local e = {}
for entry in lfs.dir(path) do
if not(entry == "." or entry == "..") then
table.insert(e, entry)
end
end
return e
end

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--[[
FFLuCI - HTTP-Interaction
Description:
HTTP-Header manipulator and form variable preprocessor
FileId:
$Id$
ToDo:
- Cookie handling
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.http", package.seeall)
require("ffluci.util")
-- Sets HTTP-Status-Header
function status(code, message)
print("Status: " .. tostring(code) .. " " .. message)
end
-- Asks the browser to redirect to "url"
function redirect(url)
status(302, "Found")
print("Location: " .. url .. "\n")
end
-- Same as redirect but accepts category, module and action for internal use
function request_redirect(category, module, action)
category = category or "public"
module = module or "index"
action = action or "index"
local pattern = os.getenv("SCRIPT_NAME") .. "/%s/%s/%s"
redirect(pattern:format(category, module, action))
end
-- Form validation function:
-- Gets a form variable "key".
-- If it does not exist: return "default"
-- If cast_number is true and "key" is not a number: return "default"
-- If valid is a table and "key" is not in it: return "default"
-- If valid is a function and returns nil: return "default"
-- Else return the value of "key"
--
-- Examples:
-- Get a form variable "foo" and return "bar" if it is not set
-- = formvalue("foo", "bar")
--
-- Get "foo" and make sure it is either "bar" or "baz"
-- = formvalue("foo", nil, nil, {"bar", "baz"})
--
-- Get "foo", make sure its a number and below 10 else return 5
-- = formvalue("foo", 5, true, function(a) return a < 10 and a or nil end)
function formvalue(key, default, cast_number, valid, table)
table = table or formvalues()
if table[key] == nil then
return default
else
local value = table[key]
value = cast_number and tonumber(value) or not cast_number and nil
if type(valid) == "function" then
value = valid(value)
elseif type(valid) == "table" then
if not ffluci.util.contains(valid, value) then
value = nil
end
end
return value or default
end
end
-- Returns a table of all COOKIE, GET and POST Parameters
function formvalues()
return FORM
end
-- Prints plaintext content-type header
function textheader()
print("Content-Type: text/plain\n")
end
-- Prints html content-type header
function htmlheader()
print("Content-Type: text/html\n")
end
-- Prints xml content-type header
function xmlheader()
print("Content-Type: text/xml\n")
end

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--[[
FFLuCI - Internationalisation
Description:
A very minimalistic but yet effective internationalisation module
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.i18n", package.seeall)
require("ffluci.fs")
require("ffluci.util")
require("ffluci.config")
table = {}
i18ndir = ffluci.fs.dirname(ffluci.util.__file__()) .. "i18n/"
-- Clears the translation table
function clear()
table = {}
end
-- Loads a translation and copies its data into the global translation table
function load(file)
local f = loadfile(i18ndir .. file)
if f then
setfenv(f, table)
f()
return true
else
return false
end
end
-- Same as load but autocompletes the filename with .LANG from config.lang
function loadc(file)
return load(file .. "." .. ffluci.config.lang)
end
-- Returns the i18n-value defined by "key" or if there is no such: "default"
function translate(key, default)
return table[key] or default
end

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descr = [[Dies ist das Simple View-Beispiel.<br />
Dieses Template ist: ffluci/view/example-simpleview/index.htm und gehoert
zur Aktion "index".<br />
Diese Uebersetzung ist: ffluci/i18n/example-simpleview.de]]
lan = "Die LAN IP-Adresse des Routers lautet:"

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--[[
FFLuCI - Freifunk Lua Configuration Interface
Description:
This is the init file
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci", package.seeall)
__version__ = "0.1"
__appname__ = "FFLuCI"
dispatch = require("ffluci.dispatcher").httpdispatch
env = ENV
form = FORM

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--[[
FFLuCI - Menu Builder
Description:
Collects menu building information from controllers
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.menu", package.seeall)
require("ffluci.fs")
require("ffluci.util")
require("ffluci.template")
ctrldir = ffluci.fs.dirname(ffluci.util.__file__()) .. "controller/"
modelpath = ffluci.fs.dirname(ffluci.util.__file__()) .. "model/menudata.lua"
-- Cache menudata into a Luafile instead of recollecting it at every pageload
-- Warning: Make sure the menudata cache gets deleted everytime you update
-- the menu information of any module or add or remove a module
builder_enable_cache = false
-- Builds the menudata file
function build()
local data = collect()
ffluci.fs.writefile(modelpath, dump(data, "m"))
return data
end
-- Collect all menu information provided in the controller modules
function collect()
local m = {}
for k,cat in pairs(ffluci.fs.dir(ctrldir)) do
m[cat] = {}
for k,con in pairs(ffluci.fs.dir(ctrldir .. "/" .. cat)) do
if con:sub(-4) == ".lua" then
con = con:sub(1, con:len()-4)
local mod = require("ffluci.controller." .. cat .. "." .. con)
if mod.menu and mod.menu.descr
and mod.menu.entries and mod.menu.order then
local entry = {}
entry[".descr"] = mod.menu.descr
entry[".order"] = mod.menu.order
entry[".contr"] = con
for k,v in pairs(mod.menu.entries) do
entry[k] = v
end
local i = 0
for k,v in ipairs(m[cat]) do
if v[".order"] > entry[".order"] then
break
end
i = k
end
table.insert(m[cat], i+1, entry)
end
end
end
end
return m
end
-- Dumps a table into a string of Lua code
function dump(tbl, name)
local src = name .. "={}\n"
for k,v in pairs(tbl) do
if type(k) == "string" then
k = ffluci.util.escape(k)
k = "'" .. ffluci.util.escape(k, "'") .. "'"
end
if type(v) == "string" then
v = ffluci.util.escape(v)
v = ffluci.util.escape(v, "'")
src = src .. name .. "[" .. k .. "]='" .. v .. "'\n"
elseif type(v) == "number" then
src = src .. name .. "[" .. k .. "]=" .. v .. "\n"
elseif type(v) == "table" then
src = src .. dump(v, name .. "[" .. k .. "]")
end
end
return src
end
-- Returns the menu information
function get()
if builder_enable_cache then
local cachemt = ffluci.fs.mtime(modelpath)
local data = nil
if cachemt == nil then
data = build()
else
local fenv = {}
local f = loadfile(modelpath)
setfenv(f, fenv)
f()
data = fenv.m
end
return data
else
return collect()
end
end

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--[[
FFLuCI - UCI wrapper library
Description:
Wrapper for the /sbin/uci application, syntax of implemented functions
is comparable to the syntax of the uci application
Any return value of false or nil can be interpreted as an error
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.model.uci", package.seeall)
require("ffluci.util")
ucicmd = "uci"
-- Wrapper for "uci add"
function add(config, section_type)
return _uci("add " .. _path(config) .. " " .. _path(section_type))
end
-- Wrapper for "uci changes"
function changes(config)
return _uci3("changes " .. _path(config))
end
-- Wrapper for "uci commit"
function commit(config)
return _uci2("commit " .. _path(config))
end
-- Wrapper for "uci get"
function get(config, section, option)
return _uci("get " .. _path(config, section, option))
end
-- Wrapper for "uci revert"
function revert(config)
return _uci2("revert " .. _path(config))
end
-- Wrapper for "uci show"
function show(config)
return _uci3("show " .. _path(config))
end
-- Wrapper for "uci set"
function set(config, section, option, value)
return _uci2("set " .. _path(config, section, option, value))
end
-- Internal functions --
function _uci(cmd)
local res = ffluci.util.exec(ucicmd .. " 2>/dev/null " .. cmd)
if res:len() == 0 then
return nil
else
return res:sub(1, res:len()-1)
end
end
function _uci2(cmd)
local res = ffluci.util.exec(ucicmd .. " 2>&1 " .. cmd)
if res:len() > 0 then
return false, res
else
return true
end
end
function _uci3(cmd)
local res = ffluci.util.exec(ucicmd .. " 2>&1 " .. cmd, true)
if res[1]:sub(1, ucicmd:len() + 1) == ucicmd .. ":" then
return nil, res[1]
end
table = {}
for k,line in pairs(res) do
c, s, t = line:match("^([^.]-)%.([^.]-)=(.-)$")
if c then
table[c] = table[c] or {}
table[c][s] = {}
table[c][s][".type"] = t
end
c, s, o, v = line:match("^([^.]-)%.([^.]-)%.([^.]-)=(.-)$")
if c then
table[c][s][o] = v
end
end
return table
end
-- Build path (config.section.option=value) and prevent command injection
function _path(...)
local result = ""
-- Not using ipairs because it is not reliable in case of nil arguments
arg.n = nil
for k,v in pairs(arg) do
if k == 1 then
result = "'" .. v:gsub("['.]", "") .. "'"
elseif k < 4 then
result = result .. ".'" .. v:gsub("['.]", "") .. "'"
elseif k == 4 then
result = result .. "='" .. v:gsub("'", "") .. "'"
end
end
return result
end

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--[[
FFLuCI - Template Parser
Description:
A template parser supporting includes, translations, Lua code blocks
and more. It can be used either as a compiler or as an interpreter.
FileId: $Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.template", package.seeall)
require("ffluci.config")
require("ffluci.util")
require("ffluci.fs")
require("ffluci.i18n")
require("ffluci.model.uci")
viewdir = ffluci.fs.dirname(ffluci.util.__file__()) .. "view/"
-- Compile modes:
-- none: Never compile, only render precompiled
-- memory: Always compile, do not save compiled files, ignore precompiled
-- always: Same as "memory" but also saves compiled files
-- smart: Compile on demand, save compiled files, update precompiled
compiler_mode = "smart"
-- This applies to compiler modes "always" and "smart"
--
-- Produce compiled lua code rather than lua sourcecode
-- WARNING: Increases template size heavily!!!
-- This produces the same bytecode as luac but does not have a strip option
compiler_enable_bytecode = false
-- Define the namespace for template modules
viewns = {
translate = ffluci.i18n.translate,
config = ffluci.model.uci.get,
controller = os.getenv("SCRIPT_NAME"),
media = ffluci.config.mediaurlbase,
include = function(name) return render(name, getfenv(2)) end,
write = io.write
}
-- Compiles and builds a given template
function build(template, compiled)
local template = compile(ffluci.fs.readfile(template))
if compiled then
ffluci.fs.writefile(compiled, template)
end
return template
end
-- Compiles a given template into an executable Lua module
function compile(template)
-- Search all <% %> expressions (remember: Lua table indexes begin with #1)
local function expr_add(command)
table.insert(expr, command)
return "<%" .. tostring(#expr) .. "%>"
end
-- As "expr" should be local, we have to assign it to the "expr_add" scope
local expr = {}
ffluci.util.extfenv(expr_add, "expr", expr)
-- Save all expressiosn to table "expr"
template = template:gsub("<%%(.-)%%>", expr_add)
local function sanitize(s)
s = ffluci.util.escape(s)
s = ffluci.util.escape(s, "'")
s = ffluci.util.escape(s, "\n")
return s
end
-- Escape and sanitize all the template (all non-expressions)
template = sanitize(template)
-- Template module header/footer declaration
local header = "write('"
local footer = "')"
template = header .. template .. footer
-- Replacements
local r_include = "')\ninclude('%s')\nwrite('"
local r_i18n = "'..translate('%1','%2')..'"
local r_uci = "'..config('%1','%2','%3')..'"
local r_pexec = "'..%s..'"
local r_exec = "')\n%s\nwrite('"
-- Parse the expressions
for k,v in pairs(expr) do
local p = v:sub(1, 1)
local re = nil
if p == "+" then
re = r_include:format(sanitize(string.sub(v, 2)))
elseif p == ":" then
re = sanitize(v):gsub(":(.-) (.+)", r_i18n)
elseif p == "~" then
re = sanitize(v):gsub("~(.-)%.(.-)%.(.+)", r_uci)
elseif p == "=" then
re = r_pexec:format(string.sub(v, 2))
else
re = r_exec:format(v)
end
template = template:gsub("<%%"..tostring(k).."%%>", re)
end
if compiler_enable_bytecode then
tf = loadstring(template)
template = string.dump(tf)
end
return template
end
-- Returns and builds the template for "name" depending on the compiler mode
function get(name)
local templatefile = viewdir .. name .. ".htm"
local compiledfile = viewdir .. name .. ".lua"
local template = nil
if compiler_mode == "smart" then
local tplmt = ffluci.fs.mtime(templatefile)
local commt = ffluci.fs.mtime(compiledfile)
-- Build if there is no compiled file or if compiled file is outdated
if ((commt == nil) and not (tplmt == nil))
or (not (commt == nil) and not (tplmt == nil) and commt < tplmt) then
template = loadstring(build(templatefile, compiledfile))
else
template = loadfile(compiledfile)
end
elseif compiler_mode == "none" then
template = loadfile(compiledfile)
elseif compiler_mode == "memory" then
template = loadstring(build(templatefile))
elseif compiler_mode == "always" then
template = loadstring(build(templatefile, compiledfile))
else
error("Invalid compiler mode: " .. compiler_mode)
end
return template or error("Unable to load template: " .. name)
end
-- Renders a template
function render(name, scope)
scope = scope or getfenv(2)
-- Our template module
local view = get(name)
-- Put our predefined objects in the scope of the template
ffluci.util.updfenv(view, scope)
ffluci.util.updfenv(view, viewns)
-- Now finally render the thing
return view()
end

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--[[
FFLuCI - Utility library
Description:
Several common useful Lua functions
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.util", package.seeall)
-- Checks whether a table has an object "value" in it
function contains(table, value)
for k,v in pairs(table) do
if value == v then
return true
end
end
return false
end
-- Dumps a table to stdout (useful for testing and debugging)
function dumptable(t, i)
i = i or 0
for k,v in pairs(t) do
print(string.rep("\t", i) .. k, v)
if type(v) == "table" then
dumptable(v, i+1)
end
end
end
-- Escapes all occurences of c in s
function escape(s, c)
c = c or "\\"
return s:gsub(c, "\\" .. c)
end
-- Runs "command" and returns its output
function exec(command, return_array)
local pp = io.popen(command)
local data = nil
if return_array then
local line = ""
data = {}
while true do
line = pp:read()
if (line == nil) then break end
table.insert(data, line)
end
pp:close()
else
data = pp:read("*a")
pp:close()
end
return data
end
-- Populate obj in the scope of f as key
function extfenv(f, key, obj)
local scope = getfenv(f)
scope[key] = obj
setfenv(f, scope)
end
-- Updates the scope of f with "extscope"
function updfenv(f, extscope)
local scope = getfenv(f)
for k, v in pairs(extscope) do
scope[k] = v
end
setfenv(f, scope)
end
-- Returns the filename of the calling script
function __file__()
return debug.getinfo(2, 'S').source:sub(2)
end

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<%+header%>
<h1>bar</h1>
<%+footer%>

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<%+header%>
<p><%:descr This is the Simple View-Example.<br />
This template is ffluci/view/example-simpleview/index.htm and belongs
to the index-Action.%></p>
<p><%:lan The router's LAN IP-Address is:%> <%~network.lan.ipaddr%></p>
<%+footer%>

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</div>
</body>
</html>

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<% require("ffluci.http").htmlheader() %>
<html>
<head>
<title>FFLuCI Examples</title>
</head>
<body>
<h1>FFLuCI</h1>
<%+menu%>
<div id="content">

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A very little Hello <%=muh%>

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<%
local req = require("ffluci.dispatcher").request
local menu = require("ffluci.menu").get()[req.category]
local menu_module = nil
require("ffluci.i18n").loadc("default")
%>
<div id="menu" style="font-size: 0.8em; padding-bottom: 20px">
<div id="menu_categories">
<span style="<% if "public" == req.category then write("font-weight: bold") end %>"><a href="<%=controller%>/public"><%:public Public%></a></span>
<span style="<% if "admin" == req.category then write("font-weight: bold") end %>"><a href="<%=controller%>/admin"><%:admin Admin%></a></span>
</div>
<div id="menu_modules">
<% for k,v in pairs(menu) do
if v[".contr"] == req.module then menu_module = v end %>
<span style="<% if v[".contr"] == req.module then write("font-weight: bold") end %>"><a href="<%=controller.."/"..req.category.."/"..v[".contr"]%>"><%=translate(v[".contr"], v[".descr"])%></a></span>
<% end %>
</div>
<% if menu_module then %>
<div id="menu_actions">
<% for k,v in ipairs(menu_module) do %>
<span style="<% if v.action == req.action then write("font-weight: bold") end %>"><a href="<%=controller.."/"..req.category.."/"..req.module.."/"..v.action%>"><%=translate(v.action, v.descr)%></a></span>
<% end %>
</div>
<% end %>
</div>