zwbm07@jupiter.hou.amoco.com (Walter Moore) (05/24/91)
The subject says it all. My organization is in the process of bringing email
and usenet in and there is some concern about binaries being sent/received.
Therefore, I was wondering if someone could let me know if and where a
program that scans for uuencoded files exists. I am running mostly
suns, but the environment is a very heterogeneous one, so source code would be
the most helpful.
Please email me at zwbm07@hou.amoco.com with any suggestions or help.
I will post a summary to the net.
Thanks in advance for all the help!
--
TTYL & TANSTAAFL ---------------- Walter Moore
Internet: zwbm07@hou.amoco.commouse@thunder.mcrcim.mcgill.edu (der Mouse) (05/29/91)
In article <1991May23.171906.24112@hou.amoco.com>, zwbm07@jupiter.hou.amoco.com (Walter Moore) writes: > The subject says it all. My organization is in the process of > bringing email and usenet in and there is some concern about binaries > being sent/received. Therefore, I was wondering if someone could let > me know if and where a program that scans for uuencoded files exists. I'm not sure what you mean. Do you want to prevent users from sending binaries around? If so, you'll have to disable all email; a sufficiently determined user can fool any snoop. One of the crypo groups (sci.crypt, alt.privacy, or some such) recently saw a posting from someone who'd written something to encode arbitrary data in what on the surface appears to be a transcription of a sports broadcast, for example. If you just want to automate sending and receiving binaries, it's not hard to detect uuencoded stuff: look for many consecutive lines of the same length, all beginning with M. Bracketing "begin" and "end" lines can serve as an additional confirmation. (The length of the lines sometimes varies by a character or two; some versions seem to add something at the end of each line.) der Mouse old: mcgill-vision!mouse new: mouse@larry.mcrcim.mcgill.edu