mod_lua.xml revision bb57315f942d09c744543fe41e453bd0181fd93e
fb51a6b789d85113d0976148685b0063c294220drbowen<!DOCTYPE modulesynopsis SYSTEM "/style/modulesynopsis.dtd">
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen<?xml-stylesheet type="text/xsl" href="/style/manual.en.xsl"?>
77a0265761f1bec2aaa0b4116c644f8066e349e3rbowen<!-- $LastChangedRevision$ -->
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen Licensed to the Apache Software Foundation (ASF) under one or more
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen contributor license agreements. See the NOTICE file distributed with
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen this work for additional information regarding copyright ownership.
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen The ASF licenses this file to You under the Apache License, Version 2.0
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen (the "License"); you may not use this file except in compliance with
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen the License. You may obtain a copy of the License at
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen Unless required by applicable law or agreed to in writing, software
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen distributed under the License is distributed on an "AS IS" BASIS,
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen See the License for the specific language governing permissions and
b07b82e44c32825d6226ee801d2ed91555e593d1rbowen limitations under the License.
4b2d52ed83bf31730c8b6bbe7c06d806dc3a0c4erbowen<description>Provides Lua hooks into various portions of the httpd
4b2d52ed83bf31730c8b6bbe7c06d806dc3a0c4erbowenrequest processing</description>
889dc1728817c1c56d0c8d894c768614e346d86ecovener<p>This module allows the server to be extended with scripts written in the
889dc1728817c1c56d0c8d894c768614e346d86ecovenerLua programming language. The extension points (hooks) available with
889dc1728817c1c56d0c8d894c768614e346d86ecovener<module>mod_lua</module> include many of the hooks available to
889dc1728817c1c56d0c8d894c768614e346d86ecovenernatively compiled Apache HTTP Server modules, such as mapping requests to
889dc1728817c1c56d0c8d894c768614e346d86ecovenerfiles, generating dynamic responses, access control, authentication, and
889dc1728817c1c56d0c8d894c768614e346d86ecovenerauthorization</p>
889dc1728817c1c56d0c8d894c768614e346d86ecovener<p>More information on the Lua programming language can be found at the
889dc1728817c1c56d0c8d894c768614e346d86ecovener<a href="http://www.lua.org/">the Lua website</a>.</p>
8548ace6aa09b4d3e463254b53865fb38fbbbc78poirier<note><code>mod_lua</code> is still in experimental state.
8548ace6aa09b4d3e463254b53865fb38fbbbc78poirierUntil it is declared stable, usage and behavior may change
8548ace6aa09b4d3e463254b53865fb38fbbbc78poirierat any time.</note>
4b2d52ed83bf31730c8b6bbe7c06d806dc3a0c4erbowen<section id="basicconf"><title>Basic Configuration</title>
4b2d52ed83bf31730c8b6bbe7c06d806dc3a0c4erbowen<code>mod_lua</code> provides a handler named <code>lua-script</code>,
4b2d52ed83bf31730c8b6bbe7c06d806dc3a0c4erbowenwhich can be used with an <code>AddHandler</code> directive:</p>
4b2d52ed83bf31730c8b6bbe7c06d806dc3a0c4erbowenAddHandler lua-script .lua
249cc9b3d83d3c60666269b90ecb9f1390d32165poirierThis will cause <code>mod_lua</code> to handle requests for files
92e5d4326ae44f79da5cb049470daba604506846poirier<p>For more flexibility, see <directive>LuaMapHandler</directive>.
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen<section id="writinghandlers"><title>Writing Handlers</title>
889dc1728817c1c56d0c8d894c768614e346d86ecovener<p> In the Apache HTTP Server API, the handler is a specific kind of hook
889dc1728817c1c56d0c8d894c768614e346d86ecovenerresponsible for generating the response. Examples of modules that include a
889dc1728817c1c56d0c8d894c768614e346d86ecovenerhandler are <module>mod_proxy</module>, <module>mod_cgi</module>,
889dc1728817c1c56d0c8d894c768614e346d86ecovener<p><code>mod_lua</code> always looks to invoke a Lua function for the handler, rather than
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowenjust evaluating a script body CGI style. A handler function looks
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowensomething like this:</p>
92e5d4326ae44f79da5cb049470daba604506846poirier-- example handler
92e5d4326ae44f79da5cb049470daba604506846poirierrequire "string"
cf7d90693f7579700c4f7e663adb83196f903df1covener This is the default method name for Lua handlers, see the optional
cf7d90693f7579700c4f7e663adb83196f903df1covener function-name in the LuaMapHandler directive to choose a different
cf7d90693f7579700c4f7e663adb83196f903df1covener entry point.
cf7d90693f7579700c4f7e663adb83196f903df1covenerfunction handle(r)
92e5d4326ae44f79da5cb049470daba604506846poirier r:puts("Hello Lua World!\n")
92e5d4326ae44f79da5cb049470daba604506846poirier if r.method == 'GET' then
92e5d4326ae44f79da5cb049470daba604506846poirier for k, v in pairs( r:parseargs() ) do
92e5d4326ae44f79da5cb049470daba604506846poirier r:puts( string.format("%s: %s", k, v) )
92e5d4326ae44f79da5cb049470daba604506846poirier elseif r.method == 'POST' then
92e5d4326ae44f79da5cb049470daba604506846poirier for k, v in pairs( r:parsebody() ) do
92e5d4326ae44f79da5cb049470daba604506846poirier r:puts( string.format("%s: %s", k, v) )
92e5d4326ae44f79da5cb049470daba604506846poirier r:puts("unknown HTTP method " .. r.method)
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowenThis handler function just prints out the uri or form encoded
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowenarguments to a plaintext page.
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowenThis means (and in fact encourages) that you can have multiple
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowenhandlers (or hooks, or filters) in the same script.
92e5d4326ae44f79da5cb049470daba604506846poirier<section id="writinghooks"><title>Writing Hooks</title>
889dc1728817c1c56d0c8d894c768614e346d86ecovener<p>Hook functions are how modules (and Lua scripts) participate in the
889dc1728817c1c56d0c8d894c768614e346d86ecovenerprocessing of requests. Each type of hook exposed by the server exists for
889dc1728817c1c56d0c8d894c768614e346d86ecovenera specific purposes such as mapping requests to the filesystem,
889dc1728817c1c56d0c8d894c768614e346d86ecovenerperforming access control, or setting mimetypes. General purpose hooks
889dc1728817c1c56d0c8d894c768614e346d86ecovenerthat simply run at handy times in the request lifecycle exist as well.</p>
92e5d4326ae44f79da5cb049470daba604506846poirier<p>Hook functions are passed the request object as their only argument.
92e5d4326ae44f79da5cb049470daba604506846poirierThey can return any value, depending on the hook, but most commonly
92e5d4326ae44f79da5cb049470daba604506846poirierthey'll return OK, DONE, or DECLINED, which you can write in lua as
92e5d4326ae44f79da5cb049470daba604506846poirier<code>apache2.OK</code>, <code>apache2.DONE</code>, or
92e5d4326ae44f79da5cb049470daba604506846poirier<code>apache2.DECLINED</code>, or else an HTTP status code.</p>
bb57315f942d09c744543fe41e453bd0181fd93ecovener-- example hook that rewrites the URI to a filesystem path.
bb57315f942d09c744543fe41e453bd0181fd93ecovenerrequire 'apache2'
bb57315f942d09c744543fe41e453bd0181fd93ecovenerfunction translate_name(r)
bb57315f942d09c744543fe41e453bd0181fd93ecovener if r.uri == "/translate-name" then
bb57315f942d09c744543fe41e453bd0181fd93ecovener -- we don't care about this URL, give another module a chance
bb57315f942d09c744543fe41e453bd0181fd93ecovener--[[ example hook that rewrites one URI to another URI. It returns a
bb57315f942d09c744543fe41e453bd0181fd93ecovener apache2.DECLINED to give other URL mappers a chance to work on the
bb57315f942d09c744543fe41e453bd0181fd93ecovener substitution, including the core translate_name hook which maps based
bb57315f942d09c744543fe41e453bd0181fd93ecovener on the DocumentRoot.
bb57315f942d09c744543fe41e453bd0181fd93ecovener Note: It is currently undefined as to whether this runs before or after
bb57315f942d09c744543fe41e453bd0181fd93ecovener mod_alias or any other module implementing the same hook.
92e5d4326ae44f79da5cb049470daba604506846poirierrequire 'apache2'
92e5d4326ae44f79da5cb049470daba604506846poirierfunction translate_name(r)
92e5d4326ae44f79da5cb049470daba604506846poirier if r.uri == "/translate-name" then
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen<section id="datastructures"><title>Data Structures</title>
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen <p>The request_rec is mapped in as a userdata. It has a metatable
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen which lets you do useful things with it. For the most part it
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen has the same fields as the request_rec struct (see httpd.h
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen until we get better docs here) many of which are writeable as
92e5d4326ae44f79da5cb049470daba604506846poirier well as readable. (The table fields' content can be changed, but the
92e5d4326ae44f79da5cb049470daba604506846poirier fields themselves cannot be set to different tables.)</p>
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier <p>The request_rec has (at least) the following methods:</p>
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier r:addoutputfilter(name|function) -- add an output filter
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier r:parseargs() -- returns a lua table containing the request's
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier query string arguments
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier r:parsebody() -- parse the request body as a POST and return
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier a lua table
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:puts("hello", " world", "!") -- print to response body
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier r:write("a single string") -- print to response body
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen<section id="logging"><title>Logging Functions</title>
92e5d4326ae44f79da5cb049470daba604506846poirier -- examples of logging messages<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:debug("This is a debug log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:info("This is an info log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:notice("This is an notice log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:warn("This is an warn log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:err("This is an err log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:alert("This is an alert log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:crit("This is an crit log message")<br />
e27eee5caa6c1bf3853c11253ae82303cff0e40brbowen r:emerg("This is an emerg log message")<br />
92e5d4326ae44f79da5cb049470daba604506846poirier<p>A package named <code>apache2</code> is available with (at least) the following contents.</p>
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier <dd>internal constant OK. Handlers should return this if they've
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier handled the request.</dd>
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier <dd>internal constant DECLINED. Handlers should return this if
249cc9b3d83d3c60666269b90ecb9f1390d32165poirier they are not going to handle the request.</dd>
92e5d4326ae44f79da5cb049470daba604506846poirier<p>(Other HTTP status codes are not yet implemented.)</p>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Specify the base path for resolving relative paths for mod_lua directives</description>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen <p>Specify the base path which will be used to evaluate all
2219c51bf0756c2f6f7deb88a13baf30f141c12epoirier relative paths within mod_lua. If not specified they
fb51a6b789d85113d0976148685b0063c294220drbowen will be resolved relative to the current working directory,
fb51a6b789d85113d0976148685b0063c294220drbowen which may not always work well for a server.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>One of once, request, conn, server -- default is once</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaScope once|request|conn|server [max|min max]</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen <p>Specify the lifecycle scope of the Lua interpreter which will
c994f52ac80f9664d2940e5ccd9e77466572013frbowen be used by handlers in this "Directory." The default is "once"</p>
c994f52ac80f9664d2940e5ccd9e77466572013frbowen <dt>once:</dt> <dd>use the interpreter once and throw it away.</dd>
c994f52ac80f9664d2940e5ccd9e77466572013frbowen <dt>request:</dt> <dd>use the interpreter to handle anything based on
fb51a6b789d85113d0976148685b0063c294220drbowen the same file within this request, which is also
c994f52ac80f9664d2940e5ccd9e77466572013frbowen request scoped.</dd>
c994f52ac80f9664d2940e5ccd9e77466572013frbowen <dt>conn:</dt> <dd>Same as request but attached to the connection_rec</dd>
c994f52ac80f9664d2940e5ccd9e77466572013frbowen <dt>server:</dt> <dd>This one is different than others because the
fb51a6b789d85113d0976148685b0063c294220drbowen server scope is quite long lived, and multiple threads
fb51a6b789d85113d0976148685b0063c294220drbowen will have the same server_rec. To accommodate this
fb51a6b789d85113d0976148685b0063c294220drbowen server scoped interpreter are stored in an apr
fb51a6b789d85113d0976148685b0063c294220drbowen resource list. The min and max arguments are intended
c994f52ac80f9664d2940e5ccd9e77466572013frbowen to specify the pool size, but are unused at this time.</dd>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Map a path to a lua handler</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaMapHandler uri-pattern /path/to/lua/script.lua [function-name]</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen <p>This directive matches a uri pattern to invoke a specific
fb51a6b789d85113d0976148685b0063c294220drbowen handler function in a specific file. It uses PCRE regular
fb51a6b789d85113d0976148685b0063c294220drbowen expressions to match the uri, and supports interpolating
fb51a6b789d85113d0976148685b0063c294220drbowen match groups into both the file path and the function name
fb51a6b789d85113d0976148685b0063c294220drbowen be careful writing your regular expressions to avoid security
fb51a6b789d85113d0976148685b0063c294220drbowen issues.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen LuaMapHandler /(\w+)/(/w+) /scripts/$1.lua handle_$2
fb51a6b789d85113d0976148685b0063c294220drbowen handler function handle_show on the lua vm after
fb51a6b789d85113d0976148685b0063c294220drbowen loading that file.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen <p>This would invoke the "handle" function, which
fb51a6b789d85113d0976148685b0063c294220drbowen is the default if no specific function name is
fb51a6b789d85113d0976148685b0063c294220drbowen provided.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Add a directory to lua's package.path</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaPackagePath /path/to/include/?.lua</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen <usage><p>Add a path to lua's module search path. Follows the same
fb51a6b789d85113d0976148685b0063c294220drbowen conventions as lua. This just munges the package.path in the
c994f52ac80f9664d2940e5ccd9e77466572013frbowen lua vms.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Add a directory to lua's package.cpath</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaPackageCPath /path/to/include/?.soa</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen <p>Add a path to lua's shared library search path. Follows the same
fb51a6b789d85113d0976148685b0063c294220drbowen conventions as lua. This just munges the package.cpath in the
c994f52ac80f9664d2940e5ccd9e77466572013frbowen lua vms.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Configure the compiled code cache.</description>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen Specify the behavior of the in-memory code cache. The default
fb51a6b789d85113d0976148685b0063c294220drbowen is stat, which stats the top level script (not any included
fb51a6b789d85113d0976148685b0063c294220drbowen ones) each time that file is needed, and reloads it if the
fb51a6b789d85113d0976148685b0063c294220drbowen modified time indicates it is newer than the one it has
fb51a6b789d85113d0976148685b0063c294220drbowen already loaded. The other values cause it to keep the file
fb51a6b789d85113d0976148685b0063c294220drbowen cached forever (don't stat and replace) or to never cache the
92e5d4326ae44f79da5cb049470daba604506846poirier <p>In general stat or forever is good for production, and stat or never
3a602d0ba8536a79a780655bb92133b571e38378poirier for development.</p>
c994f52ac80f9664d2940e5ccd9e77466572013frbowen LuaCodeCache stat<br />
c994f52ac80f9664d2940e5ccd9e77466572013frbowen LuaCodeCache forever<br />
c994f52ac80f9664d2940e5ccd9e77466572013frbowen LuaCodeCache never<br />
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Provide a hook for the translate name phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookTranslateName /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen Add a hook (at APR_HOOK_MIDDLE) to the translate name phase of
fb51a6b789d85113d0976148685b0063c294220drbowen request processing. The hook function receives a single
fb51a6b789d85113d0976148685b0063c294220drbowen argument, the request_rec, and should return a status code,
fb51a6b789d85113d0976148685b0063c294220drbowen which is either an HTTP error code, or the constants defined
fb51a6b789d85113d0976148685b0063c294220drbowen in the apache2 module: apache2.OK, apache2.DECLINED, or
fb51a6b789d85113d0976148685b0063c294220drbowen <p>For those new to hooks, basically each hook will be invoked
fb51a6b789d85113d0976148685b0063c294220drbowen until one of them returns apache2.OK. If your hook doesn't
fb51a6b789d85113d0976148685b0063c294220drbowen want to do the translation it should just return
fb51a6b789d85113d0976148685b0063c294220drbowen apache2.DECLINED. If the request should stop processing, then
92e5d4326ae44f79da5cb049470daba604506846poirierLuaHookTranslateName /scripts/conf/hooks.lua silly_mapper
92e5d4326ae44f79da5cb049470daba604506846poirierrequire "apache2"
92e5d4326ae44f79da5cb049470daba604506846poirierfunction silly_mapper(r)
92e5d4326ae44f79da5cb049470daba604506846poirier if r.uri == "/" then
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Provide a hook for the fixups phase of request
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowenprocessing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookFixups /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen Just like LuaHookTranslateName, but executed at the fixups phase
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Provide a hook for the map_to_storage phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookMapToStorage /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Provide a hook for the check_user_id phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookCheckUserID /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Provide a hook for the type_checker phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookTypeChecker /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
9cd56c73a0fd508522ba2f6bc6c9839c478c61c3rbowen<description>Provide a hook for the auth_checker phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookAuthChecker /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier<p>Invoke a lua function in the auth_checker phase of processing
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poiriera request. This can be used to implement arbitrary authentication
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirierand authorization checking. A very simple example:
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirierrequire 'apache2'
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier-- fake authcheck hook
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier-- If request has no auth info, set the response header and
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier-- return a 401 to ask the browser for basic auth info.
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier-- If request has auth info, don't actually look at it, just
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier-- pretend we got userid 'foo' and validated it.
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier-- Then check if the userid is 'foo' and accept the request.
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirierfunction authcheck_hook(r)
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier -- look for auth info
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier auth = r.headers_in['Authorization']
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier if auth ~= nil then
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier -- fake the user
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier if r.user == nil then
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier r:debug("authcheck: user is nil, returning 401")
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier r.err_headers_out['WWW-Authenticate'] = 'Basic realm="WallyWorld"'
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier elseif r.user == "foo" then
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier r:debug('user foo: OK')
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier r:debug("authcheck: user='" .. r.user .. "'")
768c8bcc0d91d1c3c04b0f80c309d31c6182fbf8poirier r.err_headers_out['WWW-Authenticate'] = 'Basic realm="WallyWorld"'
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
9cd56c73a0fd508522ba2f6bc6c9839c478c61c3rbowen<description>Provide a hook for the access_checker phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookAccessChecker /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
92e5d4326ae44f79da5cb049470daba604506846poirier<p>Add your hook to the access_checker phase. An access checker
92e5d4326ae44f79da5cb049470daba604506846poirierhook function usually returns OK, DECLINED, or HTTP_FORBIDDEN.</p>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen<directivesynopsis>
9cd56c73a0fd508522ba2f6bc6c9839c478c61c3rbowen<description>Provide a hook for the insert_filter phase of request processing</description>
fb51a6b789d85113d0976148685b0063c294220drbowen<syntax>LuaHookInsertFilter /path/to/lua/script.lua hook_function_name</syntax>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
fb51a6b789d85113d0976148685b0063c294220drbowen</directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<directivesynopsis>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen<description>Provide a hook for the quick handler of request processing</description>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<contextlist><context>server config</context><context>virtual host</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic<context>directory</context><context>.htaccess</context>
99e316bc4b9b2b5754165939ac14b6d16132cce1igalic</contextlist>
6b4cd1f143d5d7244d2476d1e28456212faddb72rbowen</directivesynopsis>
fb51a6b789d85113d0976148685b0063c294220drbowen</modulesynopsis>