[luci] To Get Client IP Addr - Lucittpd seems not running in CGI Mode

[Patrick Sun]

Hi all,

Can anyone with a deep understanding of LuCI give me a hint on how
Lucittpd works with LuCI?

Goal:
          I try to write a program try to display client's IP addr, MAC
addr through LuCI Web. 

Failed Approach 1:
          according to my understanding. Cgi program get REMOTE_ADDR
from environment variables... 

          so   os.getenv("REMOTE_ADDR") should have the ip addr... 

          however, when I write os.getenv("REMOTE_ADDR") into LuCI's
node action function.. it returns nil.

Failed Approach 2:
           
         I tried to use luci.http.getenv("REMOTE_ADDR")  it also return
nil, although
         luci.http.write seems working properly. 

Failed Approach 3: 
        I tried to use os.getenv in  luci-0.8.8/host/www/cgi-bin/luci,
however, it seems never being called.
        I deleted   luci-0.8.8/host/www/cgi-bin/luci  ,     LuCI still
runs properly with http://localhost:8080/

Possible Findings and Thinkings:

I'm thinking that Lucittpd is quite different from normal httpd. such as
busybox httpd or lighttpd..  
It may run luci directly.   

maybe lucittpd  always think 'http://localhost:8080/luci' as a script to
run.

Which local file  does http://localhost:8080/luci  maps to ?

unlike  http://localhost/cgi-bin  ->  luci-0.8.8/host/www/cgi-bin/  
I cannot find configuration files that tell me where
http://localhost:8080/luci  -> maps to ?

the luci-0.8.8/host/www/luci is a dummy directory,  even if I remove the
directory, 
http://localhost:8080/luci  still works with lucittpd. 

      

Regards
Patrick 
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