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ApFree WiFiDog is an open-source, high-performance captive portal solution for HTTP(s) that can be used to authenticate users on wireless networks running on OpenWrt platform. It can handle high concurrency and high volume of traffic and supports both HTTP and HTTPS protocols.
The above diagram is a flowchart of the user authentication procedure for apfree-wifidog when used in conjunction with the wwas authentication server and SMS verification. It shows the process of a user attempting to access a website, the router intercepting the request and redirecting the user to the apfree-wifidog authentication server, the user requesting an SMS verification code, the server sending the code to the user, the user inputting the code to verify their identity, and finally being granted access to the website. The diagram also includes loops for the "keep-alive" process and the "apfree-wifidog counter v2" process which involve the router and the authentication server regularly communicating to ensure that the authentication is still valid and to collect statistics on user's online usage.
The above diagram is a flowchart of the user roam procedure for apfree-wifidog when the user connects to the router. It shows the process of the user connecting to the router and obtaining an IP address via dnsmasq, the router using dnsmasq to call the roam interface of apfree-wifidog, and the authentication server receiving the roam request and checking if the user has been previously authenticated by their MAC address. If the user has been previously authenticated, the authentication server returns the user's token information, IP, and MAC address to the router and grants access. If the user has not been previously authenticated, the authentication server does not take any action, and the user will go through the normal authentication process to gain access.
