cgi-ubus

OpenWrt UBUS as a CGI program to be used with Lighttpd, BusyBox httpd and Apache HTTPD.

The UBUS over http bridge is implemented as a plugin for uhttpd. There is also nginx-ubus-module. For other web servers you may use this CGI adapter.

Install

Upload to router:

scp -O ubus.sh [email protected]:/www/cgi-bin/ubus.sh

Now enable the script as a UBUS path for Luci:

chmod +x /www/cgi-bin/ubus.sh
uci set luci.main.ubuspath='/cgi-bin/ubus.sh'
uci commit
reboot

Yes, the reboot is required to evict cache.

BusyBox httpd

The BB httpd needs to be compiled with CGI support. See BUSYBOX_CONFIG_FEATURE_HTTPD_CGI

Lighttpd

You must install mod_cgi:

opkg lighttpd-mod-cgi

TBD Then create a configuration /etc/lighttpd/conf.d/99-ubus.conf:

cgi.assign := (".sh" => "/bin/sh")

Caddy

To run LuCI on Caddy, prepare a Caddyfile

{
    order file_server last
}

:80 {
    cgi /cgi-bin/luci* /www/cgi-bin/luci { script_name /cgi-bin/luci }
    cgi /ubus* ubus.sh { script_name /ubus }
    file_server /luci-static* { root /www }
    redir / /cgi-bin/luci
}

See https://sigeryang.net/2022/02/12/caddy-openwrt-luci/

Apache HTTPD

TBD

   <Directory "/var/www/htdocs/">
        AllowOverride None
        Options +ExecCGI
        Order allow,deny
        Allow from all
    </Directory>

Author

Jo-Philipp Wich

See a discussion https://forum.openwrt.org/t/lighttpd-and-ubus-over-json-rpc/117582

License

0BDSD (similar to Public Domain)