tftp-hpa-execute

I recently had the opportunity to use tftp-hpa-execute and it's a wonderful customized version of tftp-hpa, adding the ability to execute system commands when files are requested, matching certain patterns. It's an excellent tool for developers who want to dynamically generate configuration files for Voice over Internet Protocol (VoIP) phones.

The tftp-hpa's regex pattern matching system is used to determine if a match occurs or not and executes the command specified for that pattern. The tool can be used to create a rule whenever a file begins with the string 00085D, which is the OUI-prefix for the Aastra VoIP phone's Media Access Control (MAC) address.

To start using the tool, a user must run the tftpd daemon and specify a location for the rules file using the -m argument. The rules file can be located in the source tarball's tftpd/sample.rules. In the rules file, a user can create a line to execute a specific command for a pattern. For example, one can create a rule to execute the command /usr/local/bin/mkaastracfg, passing the full filename requested by the program as the first argument.

Overall, tftp-hpa-execute is an excellent tool for developers who want to create dynamic configuration files for VoIP phones. With its regex pattern matching system, it's easy to determine whether a match occurs and execute a specific command for that match.