WBM refuses to open.

[Jabbl]

I've compiled FW25 according to the instructions, but encounter issues when trying to navigate to the device.

The console log of the browser gives an error

pfc.js?dace362d8608afcb78ac:20 Uncaught (in promise) Error: Unexpected token '<', "<?php

inc"... is not valid JSON
    at new t (pfc.js?dace362d8608afcb78ac:20:1595)
    at e.<anonymous> (pfc.js?dace362d8608afcb78ac:90:7589)
    at pfc.js?dace362d8608afcb78ac:90:6157
    at Object.throw (pfc.js?dace362d8608afcb78ac:90:6262)
    at s (pfc.js?dace362d8608afcb78ac:90:5027)

The PLC has no source map for the pfc.js file, which means debugging is quite hard, but it looks to me like the WBM tries loading either infos.php or login_data.php as JSON and therefore throws since PHP-files start with <?php.

Full browser stack trace:

pfc.js?dace362d8608afcb78ac:20 Uncaught (in promise) Error: Unexpected token '<', "<?php

inc"... is not valid JSON
    at new t (pfc.js?dace362d8608afcb78ac:20:1595)
    at e.<anonymous> (pfc.js?dace362d8608afcb78ac:90:7589)
    at pfc.js?dace362d8608afcb78ac:90:6157
    at Object.throw (pfc.js?dace362d8608afcb78ac:90:6262)
    at s (pfc.js?dace362d8608afcb78ac:90:5027)
t @ pfc.js?dace362d8608afcb78ac:20
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
s @ pfc.js?dace362d8608afcb78ac:90
Promise.then (async)
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
o @ pfc.js?dace362d8608afcb78ac:90
e.reloadParameters @ pfc.js?dace362d8608afcb78ac:90
e @ pfc.js?dace362d8608afcb78ac:90
p @ pfc.js?dace362d8608afcb78ac:90
(anonymous) @ pfc.js?dace362d8608afcb78ac:90
n @ pfc.js?dace362d8608afcb78ac:20
(anonymous) @ pfc.js?dace362d8608afcb78ac:20
(anonymous) @ pfc.js?dace362d8608afcb78ac:20
(anonymous) @ pfc.js?dace362d8608afcb78ac:20
(anonymous) @ pfc.js?dace362d8608afcb78ac:20

Device type: 750-8212 Device name: PFC200V3-5FAA98 Browser: Tested Chrome, Edge and Firefox

[falk-werner]

Hello @Jabbl,

in order to reproduce the issue we have the following questions:

• Please name the URL your requested via your browser
• Please make a SSH connection to your device and send us the output of the following command:
  php -i

Since the WBM-request returns a PHP script and PHP should be interpreted by the webserver by default, we would like to ask you to perform some checks on the device:

• Please verfiy if PHP is installed. Connect via SSH to device and enter the following command:
  opkg list-installed | grep php
  This should return three packages: php8, php-pam and php-selection
• Please check configuration of the webserver (/etc/lighttpd/lighttpd.conf)
  this file should contain mod_cgi and include_shell "cat fastcgi.confd/*.conf 2>/dev/null ||:"
• Please check PHP configuration of the webserver (/etc/lighttpd/fastcgi.confd/php.conf)

This file should look like

fastcgi.map-extensions = ( ".html" => ".php" )

$SERVER["socket"] =~ default_sockets {
  $HTTP["url"] =~ "\.php$" {
    fastcgi.server += (
      ".php" =>
      ( "localhost" =>
        (
          "socket" => "/tmp/php-fastcgi.socket",
          "bin-path" => "/usr/bin/php-cgi",
          "min-procs" => 1,
          "max-procs" => 2,
          "max-load-per-proc" => 8,
          "idle-timeout" => 50,
          # Fix PATH_INFO for PHP scripts that rely on it (like Wordpress).
          "broken-scriptfilename" => "enable"
        )
      )
    )
  }
}

[Jabbl]

I've used WAGO Ethernet Settings with a service cable to adjust the device to use a static IP-address.\ URL: 10.50.1.25\ Note: The favicon shows correctly, the title of the tab is Web-based Management and I am correctly redirected to 10.50.1.25/wbm/.

php -i: php-i.txt

Other commands:

> root@PFC200V3-5FAA98:~ opkg list-installed | grep php
php-pam - 2.2.4
php-selection - 1.2.0
php8 - 8.1.16+wago2

> root@PFC200V3-5FAA98:~ cat /etc/lighttpd/lighttpd.conf | grep "mod_cgi" -B 4
server.modules             = (
    "mod_access",
    "mod_accesslog",
    "mod_auth",
    "mod_cgi",

> root@PFC200V3-5FAA98:~ cat /etc/lighttpd/lighttpd.conf | grep "include_shell"
include_shell "cat fastcgi.confd/*.conf 2>/dev/null ||:"

> root@PFC200V3-5FAA98:~ cat /etc/lighttpd/fastcgi.confd/php.conf
cat: can't open '/etc/lighttpd/fastcgi.confd/php.conf': No such file or directory

> root@PFC200V3-5FAA98:~ cat /etc/lighttpd/fastcgi.confd/param-service.conf
$SERVER["socket"] =~ default_sockets {
  fastcgi.server += (
    "/wda" =>
    ((
      "socket" => "/tmp/paramserv.fcgi.socket",
      "check-local" => "disable"
    )),
    "/files" =>
    ((
      "socket" => "/tmp/paramserv.files.fcgi.socket",
      "check-local" => "disable"
    ))
  )
}

[Jabbl]

Since php.conf is missing I decided to check the ptxconf file and compare it to the one on Github.\ I then noticed that option PTXCONF_LIGHTTPD_MOD_FASTCGI_PHP was disabled in my configuration, even though I never remember unselecting it.

The only change I remember doing is enabling jq, as I wanted that tool to be available to me, but maybe opening the ptxdist menu changed some other settings in the background?

I've now re-enabled PTXCONF_LIGHTTPD_MOD_FASTCGI_PHP and will try again.

[Jabbl]

With PTXCONF_LIGHTTPD_MOD_FASTCGI_PHP re-enabled the WBM now responds correctly.\ I'm not sure what caused this to be disabled in the first place, but at least it works correctly now.