Date: Sat, 19 Jan 2002 12:55:29 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Aaron Smith <aaron-fbsd@mutex.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: ftpd patch that saves me a lot of hassle Message-ID: <200201192055.g0JKtT151813@apollo.backplane.com> References: <20020119122812.E909@gelatinous.com>
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What? You don't like directories named '...w^Ha^Hr^He^Hz^H^H^H' ?
I like it, but there are a few problems. What about underscore? And
will this mess up people using ftp outside the U.S.?
-Matt
Matthew Dillon
<dillon@backplane.com>
:I got sick of (presumably) warez people probing my anonymous ftp site and
:dropping all kinds of hard-to-delete trash in incoming, so I patched my
:ftpd to only allow directories to start with alphanumerics. There's
:probably a better solution, but this works for me so I figure'd I'd share.
:
:Combining this with a umask that doesn't allow reading uploaded files keeps
:things reasonably well in hand.
:
:--Aaron
:
:
:Index: ftpd.c
:===================================================================
:RCS file: /usr/cvs/src/libexec/ftpd/ftpd.c,v
:retrieving revision 1.62.2.15
:diff -u -r1.62.2.15 ftpd.c
:--- ftpd.c 2001/12/18 18:35:55 1.62.2.15
:+++ ftpd.c 2002/01/19 09:47:42
:@@ -2216,6 +2216,12 @@
: {
:
: LOGCMD("mkdir", name);
:+
:+ if (!isalnum(*name)) {
:+ reply(521, "Bite me.");
:+ return;
:+ }
:+
: if (mkdir(name, 0777) < 0)
: perror_reply(550, name);
: else
:
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