![]() ![]() ![]() Parameter in the request header, converts it to lowercase, and changesĪll characters other than ASCII alphanumerics into "_". A partial list of the directories on įor each incoming HTTP request, althttpd takes the text of the Host: The directory is chosen based on the Host: parameter of the In the case of, all content is served from /home/www.Īt the top level of this document hierarchy is a bunch of directories The -root option tells althttpd where to find the document hierarchy. The -user option tells althttpd to become user www-data after entering Of the web document hierarchy (/home/www in the example) and then dropĪll superuser privileges prior to reading any content off of the wire. Is done, then althttpd will move itself into a chroot jail at the root Notice that althttpd is run as the superuser. ![]() Port 80 launches a copy of /usr/bin/althttpd with some additionalĪrguments that amount to the configuration for the webserver. The key observation here is that each incoming TCP/IP connection on Server_args = -logfile /logs/http.log -root /home/www -user www-data You can use this as a template to create your own installations. that configures althttpd to server unencrypted Shown below is the complete text of the /etc/xinetd.d/http file on To build althttpd with built-in TLS support using libssl: gcc -Os -o /usr/bin/althttpd -fPIC -DENABLE_TLS \ It should be relatively easy to customize for specialized needs. #Stunnel http server code#The althttpd source code is heavily commented and accessible. #Stunnel http server install#To build and install althttpd, run the following command: gcc -Os -o /usr/bin/althttpd althttpd.c The source code file is named " althttpd.c". The complete source code for althttpd is contained within a singleĬ-code file with no dependences outside of the standard C library. "indirectly" operating in HTTPS mode via that service. Stunnel4, passing the -https 1 flag to althttpd to tell it that it is lssl -lcrypto, then started with the -cert fullchain.pem andĪlthttpd can be started via an external connection service such as Which facilitates security auditing and analysis.įor serving TLS connections there are two options:Īlthttpd can be built with the ENABLE_TLS macro defined and linked to These design factors help keep the althttpd source code simple, Only lives for the duration of a single connection, which means thatĪlthttpd does not need to worry too much about memory leaks. This helps to keep theĬonfiguration simple and mitigates worries about about introducingĪ security vulnerability through a misconfigured web server.īecause each althttpd process only needs to service a singleĬonnection, althttpd is single threaded. Master althttpd instance rather than by xinetd.Īlthttpd has no configuration file. The onlyĭifference is that the connection-handler process is now started by a EachĬonnection is still handled using a separate process. Then forks a copy of itself to handle each inbound connection. Althttpd itself listens on portĨ0 for incoming HTTP requests (or 443 for incoming HTTPS requests), ![]() When the connection closes, the althttpd process exits.Īlthttpd can also operate stand-alone. Process will handle one or more HTTP requests over the same connection. A separate process is started for each incomingĬonnection, and that process is wholly focused on serving that Of the HTTP requests are CGI to various Fossil Althttpd strives for simplicity, security, and low resourceĪs of 2022, the althttpd instance for answersĪbout 500,000 HTTP requests per day (about 5 or 6 per second)ĭelivering about 200GB of content per day (about 18 megabits/second)Īverage on this machine normally stays around 0.5. Althttpd is a simple webserver that has run the website ![]()
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