In reaction to PR bin/157732 (http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/157732) I am investigating why traceroute does not trace hostnames greater in length than 64 chars. It turned out that a limit of 64 chars is coded into traceroute.c. From RFC2181 (http://tools.ietf.org/html/rfc2181#section-11) follows that a limit of 254 chars needs to be supported by software conforming to standard.
traceroute calls gethostbyname(). It would be easiest (and results in a working program, I tried) to remove the part which checks against the limit of 64 chars completely. Another option would be to check against 254 chars. Now, I try to investigate whether removing the check altogether would result in any harmful effects in gethostbyname() or other functions. I have not found any possibilites of gethostbyname() buffer-overflowing. I consider my abilities readning and coding C beginner-level, so I am not sure and asking about opinions. Am I turning to the right forum with my request or should I post somewhere else? Thanks for your input, cheers -- Christopher J. Ruwe TZ GMT + 2 _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
