1   Instructions

Implement a server program for the TFTP protocol (RFC 1350).

Your program must match the following documentation:

Usage: mytftpd [ADDR] [PORT]

Start serving the current directory over TFTP.

If ADDR is specified, bind to that address only.
If both ADDR and PORT are specified, bind to the specified port.

• Your server must reject requests for transfering files outside of the current directory.
• You may restrict your implementation to support only the “octet” transfer mode.
• You may use any standard C function (either from ISO C 1999/2011 or POSIX).
• You may not use system or any other mechanism that invokes an external program.

For extra credits you may implement RFC 2348 or 2349 to support file sizes greater than 32MB.

2   Grading

• 7 points if your program mytftpd works without arguments, and can answer simple get or put commands from a standard TFTP client.
• +1 point if your program can bind to the address and port number specified on the command line.
• +2 point if your program can transfer files larger than 32MB.

3   Copyright and licensing

Copyright © 2014, Raphael ‘kena’ Poss. Permission is granted to distribute, reuse and modify this document and other documents for the Systems Programming course by the same author according to the terms of the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/.