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Date: Tue, 31 Dec 2002 18:07:26 +0100
From: Tim van Erven <tve@...mig.net>
To: Popa3d Users <popa3d-users@...ts.openwall.com>
Subject: '.' and '/' in usernames
Popa3d rejects usernames with dots ('.') in them and I believe it also
rejects usernames containing any slashes ('/'), though I haven't tested
the latter.
AFAICT, rfc 1939 allows usernames consisting of any printable ASCII
characters (and being no longer than 40 characters). Surely '.' and '/'
are printable characters.
Fixing this might not be worth the additional complexity and room for
errors, but perhaps a note in the DESIGN file is in order?
For your reference from virtual.c:
static int is_valid_user(char *user)
{
unsigned char *p;
/* This is pretty liberal, but we're going to use direct syscalls only,
* and they have to accept all the printable characters */
for (p = (unsigned char *)user; *p; p++)
if (*p < ' ' || *p > 0x7E || *p == '.' || *p == '/') return 0;
if (p - (unsigned char *)user > NAME_MAX) return 0;
return 1;
}
--
Tim van Erven <tve@...mig.net>
OpenPGP Key ID: 712CB811 Fingerprint: F6C9 61EE 242C C012 36D5
WWW: http://www.science.uva.nl/~talerven/ BBF8 6310 D557 712C B811
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