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mod_ahtse_lua AHTSE

Apache httpd content generator using Lua

A module using a Lua script file to respond to a get request. Similar to the CGI mechanism, somewhat customized for AHTSE use. The lua script file should define a handler function that takes three arguments and returns three values.

Since it involves executing a script, the use of this module may increase server vulnerability

Inputs to Lua

• URL parameter string, or nil if there are no parameters
• A table of input headers
• A table of notes. The HTTPS key is set if the matching apache environment variable is also set

Outputs from Lua

• Content
• A table of output headers
• The http status code

The Content-Type header is properly handled, others might not work as expected

Apache Directives

• AHTSE_lua_RegExp regexp
  Regular expressions that have to match the request URL to activate the module. May appear more than once.

• AHTSE_lua_Script script function
  The lua script to run and what function to call. The script can be lua source or precompiled lua bytecode. The default function name is handler

• AHTSE_lua_Redirect On
  When the lua script returns a redirect status code and a Location header, issue an internal redirect to that location. Default is to use the response as is. Recognized redirect codes are 301, 302, 307 and 308.

• AHTSE_lua_KeepAlive On
  Preserve the initialized lua state between requests on the same input connection. By default a new lua state is instantiated for each request. This setting can improve performance, but should be used only when the lua state is not modified between requests.

Lua

• sample_script.lua
  An example server side lua script, returns the query string wrapped in JSON

• harness.lua
  Executes a Lua script as if invoked by this module, for script testing