Introduction

WebUI is a graphical user interface that is available to the connected devices. It acts as an application running on the RDK-B stack and performs the functions of a device management interface similar to TR69 & SNMP. A user can monitor and modify RDK-B feature settings/rules using WebUI. It is a client–server application, client runs in a web browser (as part of devices connected over LAN) and Lighttpd on the RDK-B stack acts as server. The functions in WebUI are defined in C and are called from PHP using ZEND_API. PHP and the Zend Engine manage [exchange] variables internally over the D-Bus.

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This is the architecture of WebUI component.

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Figure 1. WebUI Architecture

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Flow diagram for getStr(Obj):

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Flow diagram for setStr(Obj, Value, Flag):

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Note: The name Zend refers to the language engine [ PHP's core ]

Features 

Gateway

At a Glance, Email Notification, Connection Status, Local IP Network, Wi-Fi, MTA, MoCA, Firewall IPv4 / IPv6, Software, Hardware, etc.

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Connected Devices

Connected Devices and Range Extenders

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Parental Control

Managed Sites, Managed Services, Managed Devices and Reports

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Advanced

Port Forwarding, Port Triggering, Remote Management, DMZ, etc.Device Discovery.

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Troubleshooting

Troubleshooting Logs, Diagnostic Tools, Wi-Fi Spectrum Analyzer, MoCA Diagnostics, Reset/Restore Gateway, Change Password, etc.

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Note: Only MSO has access to monitor / modify Email Notification (Gateway -> At a Glance, Wi-Fi Home Security and Community Wi-Fi

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Code Flow

WebUI on the Device:

• “/etc/webgui.sh” will modify “/etc/lighttpd.conf” on runtime and create “/tmp/lighttpd.conf”
• Command to run lighttpd is “lighttpd –f /tmp/lighttpd.conf”
• “cosa.so” is linked as an extension to “php” in “/etc/php.ini”
• document-root = “/usr/www/”
• Inside “/usr/www/” we have,
  1. actionHandler folderhandles PHP SET actions
  2. cmn folder has css, fonts, img and js [Styling & JS Lib]
  3. includes folder has header.php, footer.php. nav.php, userbar.php and utility.php

WebUI on RDK-B Yocto Repo

• On RDK-B, Web UI source code resides in the path –

  code.rdkcentral.com/rdkb/components/opensource/ccsp/webui/generic/source/Styles/xb3/code

• During build time “code” folder is moved to “/usr/www/”
• On yocto for build we can have specific target and what to build

$ repo init -u https://code.rdkcentral.com/r/manifests -b rdk-next -m rdkb-extsrc.xml
$ repo sync -j4 --no-clone-bundle

        $ source meta-cmf-raspberrypi/setup-environment (Select option raspberrypi-rdk-broadband.conf)

        $ bitbake rdk-generic-broadband-image

        $ bitbake –c compile –f lighttpd

         $ bitbake –c compile –f ccsp-webui

For details on WebUI Migration to jst,  go to WebUI Migration to jstNote: The name Zend refers to the language engine [ PHP's core ]