From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <w.bumiller@proxmox.com>
Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits))
 (No client certificate requested)
 by lists.proxmox.com (Postfix) with ESMTPS id 759C57361C;
 Fri, 18 Jun 2021 09:18:14 +0200 (CEST)
Received: from firstgate.proxmox.com (localhost [127.0.0.1])
 by firstgate.proxmox.com (Proxmox) with ESMTP id 6CF0723C4D;
 Fri, 18 Jun 2021 09:17:44 +0200 (CEST)
Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com
 [94.136.29.106])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits))
 (No client certificate requested)
 by firstgate.proxmox.com (Proxmox) with ESMTPS id A94F823C3F;
 Fri, 18 Jun 2021 09:17:43 +0200 (CEST)
Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1])
 by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 7820943012;
 Fri, 18 Jun 2021 09:17:43 +0200 (CEST)
Date: Fri, 18 Jun 2021 09:16:52 +0200 (CEST)
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
To: Fabian Ebner <f.ebner@proxmox.com>
Cc: pve-devel@lists.proxmox.com, pbs-devel@lists.proxmox.com
Message-ID: <150695918.1370.1624000612410@webmail.proxmox.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
X-Priority: 3
Importance: Normal
X-Mailer: Open-Xchange Mailer v7.10.5-Rev14
X-Originating-Client: open-xchange-appsuite
X-SPAM-LEVEL: Spam detection results:  0
 AWL 0.854 Adjusted score from AWL reputation of From: address
 BAYES_00                 -1.9 Bayes spam probability is 0 to 1%
 KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment
 SPF_HELO_NONE           0.001 SPF: HELO does not publish an SPF Record
 SPF_PASS               -0.001 SPF: sender matches SPF record
 URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See
 http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more
 information. [proxmox.com]
Subject: Re: [pbs-devel] [pve-devel] [PATCH v6 proxmox-apt 04/11] add
 check_repositories function
X-BeenThere: pbs-devel@lists.proxmox.com
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Proxmox Backup Server development discussion
 <pbs-devel.lists.proxmox.com>
List-Unsubscribe: <https://lists.proxmox.com/cgi-bin/mailman/options/pbs-devel>, 
 <mailto:pbs-devel-request@lists.proxmox.com?subject=unsubscribe>
List-Archive: <http://lists.proxmox.com/pipermail/pbs-devel/>
List-Post: <mailto:pbs-devel@lists.proxmox.com>
List-Help: <mailto:pbs-devel-request@lists.proxmox.com?subject=help>
List-Subscribe: <https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel>, 
 <mailto:pbs-devel-request@lists.proxmox.com?subject=subscribe>
X-List-Received-Date: Fri, 18 Jun 2021 07:18:14 -0000


> On 06/18/2021 8:58 AM Fabian Ebner <f.ebner@proxmox.com> wrote:
> 
>  
> Am 18.06.21 um 08:56 schrieb Wolfgang Bumiller:
> > 
> >> On 06/18/2021 8:53 AM Fabian Ebner <f.ebner@proxmox.com> wrote:
> >>
> >>   
> >> Am 18.06.21 um 08:44 schrieb Wolfgang Bumiller:
> >>>
> >>>> On 06/18/2021 8:42 AM Fabian Ebner <f.ebner@proxmox.com> wrote:
> >>>>>> +            Some((last, rest)) => match rest.split_last() {
> >>>>>> +                Some((second_to_last, _rest)) => {
> >>>>>> +                    (*last == "org" && *second_to_last == "debian")
> >>>>>> +                        || (*last == "com" && *second_to_last == "proxmox")
> >>>>>> +                }
> >>>>>> +                None => false,
> >>>>>> +            },
> >>>>>> +            None => false,
> >>>>>> +        };
> >>>>>> +
> >>>>>> +        for uri in self.uris.iter() {
> >>>>>> +            if let Some(host) = host_from_uri(uri) {
> >>>>>> +                let domains = host.split('.').collect();
> >>>>>
> >>>>> ^ But instead of building a vector here, why not just do:
> >>>>>
> >>>>>        if host == "proxmox.com" || host.ends_with(".proxmox.com")
> >>>>>            || host == "debian.org" || host.ends_with(".debian.org")
> >>>>>        {
> >>>>>            ...
> >>>>>        }
> >>>>>
> >>>>
> >>>> Misses FQDNs?
> >>>
> >>> Such as?
> >>>
> >>
> >> http://security.debian.org.
> > 
> > Why is that not caught by `.ends_with(".debian.org")`?
> > 
> 
> Because of the final dot.

Splitting at '.' gives you an empty element in your vector, so that's the same in your code...

Feel free to just strip the final dot, though, if it makes you feel any better :-P

> But it is likely very uncommon and simply 

Do people even really do that, ever, outside of zone files?

> splitting by '.' leads to false results with e.g. 
> http://security..debian.org too, so it might not be worth worrying about...

That doesn't work anyway...