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Topic: lighttpd lua query string access

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humpty

Group: Members
Posts: 655
Joined: Sep. 2005

Posted: April 01 2008,16:20

anyone familiar with lighttpd using lua scripts ?

i'm trying to call a lua script by supplying a query string in a link ;

e.g
<a href="goto_date.lua?31-3-2008">1</a>

but don't know how to get to the query string argument(s)

arg[0] only holds the program path
arg[1] is nil

how do i get the date ?

lucky13

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Posts: 1478
Joined: Feb. 2007

Posted: April 01 2008,16:43

Not sure I understand if this is based on user input or parsing some date variable. Try this yet?
http://www.lua.org/pil/22.1.html

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mikshaw

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Posts: 4856
Joined: July 2004

Posted: April 01 2008,16:51

It's an environment variable

Try os.getenv("QUERY_STRING")

Here's an example I have in one of my in-progress cgi scripts

Code Sample

-- break up query string
params=" "..string.gsub(os.getenv("QUERY_STRING"),"&"," ").." "

function get_param(var)
local p=string.gsub(params,".*"..var.."=(.-)%s.*","%1")
-- strip any naughty leading path
p=string.gsub(p,".*/","")
return(p)
end

var_a=get_param("one")
var_b=get_param("two")

This particular function breaks up a string that uses the format
myscript.cgi?one=something&two=somethingelse
The lua script would end up setting var_a="something" and var_b="somethingelse"

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humpty

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Posts: 655
Joined: Sep. 2005

Posted: April 02 2008,01:42

tks mikshaw, that's just what i was looking for.

roberts

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Posts: 4983
Joined: Oct. 2003

Posted: April 03 2008,19:51

mikshaw wrote:

Quote

Here's an example I have in one of my in-progress cgi scripts

Just curious, did the existing cgi.lua not work for you?

We have had cgi.lua together with sample lua scripts for monkey webserver since before murgaLua.

6 replies since April 01 2008,16:20

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Damn Small Linux Board » Non-DSL Topics » Programming and Scripting » lighttpd lua query string access