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Re: why does smtpserver restrict quote in argument to router for verification
- To: Nicholas_Briggs.PARC@xerox.com
- Subject: Re: why does smtpserver restrict quote in argument to router for verification
- From: Matti Aarnio <mea@utu.fi>
- Date: Fri, 18 Aug 1995 19:17:06 +0300 (EET DST)
- Cc: zmailer@nic.funet.fi
- In-Reply-To: <95Aug16.200403pdt."15694(6)"@alpha.xerox.com> from "Nicholas_Briggs.PARC@xerox.com" at Aug 16, 95 08:03:51 pm
[ I just had nightmarish triple-day, which started when nic.funet.fi's
HSZ40 RAID-controller decided to scramble its PCMCIA Flash-ROM cards,
and otherwise started to act up.. Field-service worked for two days
to fix it -- they at first changed everything except softwares on that
rom-card, finally they changed the rom-card, and things started to work..
Ok, machine came up, with huge queues of things.. and I want to test
my lattest code which runs fine on Solaris 2.3 and Linux..
Then I (re-)learned that OSF/1 has libresolv.a in multiple locations, and
naturally my linkage took wrong one, and machine was running for quite
a while before I noticed something to be really wrong -- massive amounts
of "unresolvable" addresses -- and router dropping cores..
Ah well, my "2.99.15" is now running on nic.funet.fi, and this list
(among others) works again. ]
> Would anyone care to comment on why this piece of code in the smtpserver
> checks to see if there are quotes before it passes the address off to the
> router for verification ?
>
> if (args == NULL
> || strchr(args, '\'') != NULL || args[strlen(args)-1] == '\\') {
> type(501, (char *)NULL);
> return NULL;
> }
>
> The result is that if verification of addresses is turned on, users who
> have a quote in their name are out of luck -- for instance, something like
> Shawn_O'Malley@mc.xerox.com -- which is just fine as far as RFC822 is
> concerned.
I think this is of old code -- yes, on 2.2.1.
I guess it is more like an attempt to patch up some problem
that quote in user's address caused in the original scripts.
String ending with back-slash is potential trouble-spot for
my new scripts too, but single-quote should not be -- nor back-quote:
z$ router "O'Maley@utu.fi"
<mea.interactive@nic.funet.fi>: address: O'Maley@utu.fi
(((smtp utu.fi 'O'\''Maley@utu.fi' default_attributes)))
z$ router O'Maley@utu.fi
> ^C
z$ router 'foo`doo'@nic.funet.fi
<mea.interactive@nic.funet.fi>: address: foo`doo@nic.funet.fi
(((local 'foo`doo@nic.funet.fi' 'foo`doo' default_attributes)))
z$ router "foo`doo"@nic.funet.fi
> ^C
z$ router 'foo\'
<mea.interactive@nic.funet.fi>: address: foo\
(((local 'foo\' 'foo\' default_attributes)))
z$
So yes, the scripts handle it just fine, but entering
those chars take some SH-gymnastics.. However this
happens only at the interactive Zmsh.
I will remove all except the NULL-test from my smtpserver.
> Nick Briggs
> Xerox PARC
/Matti Aarnio <mea@utu.fi> <mea@nic.funet.fi>