Florian Kulzer <[EMAIL PROTECTED]> writes:
> [ Felix, I hope this message also helps with your problem. ]
>
> On Thu, Oct 04, 2007 at 16:22:06 -0700, Carl Johnson wrote:
> > Florian Kulzer writes:
> > > On Tue, Oct 02, 2007 at 21:02:41 -0700, Carl Johnson wrote:
> > >
> > > Did you try to remove all the DVD-related lines from your
> > > /etc/apt/sources.list, run "aptitude update" and then add the DVD(s)
> > > again using the "apt-cdrom" command? I think that should work but I have
> > > not tested it.
> >
> > I hadn't tried that originally, but I have since with no change.
>
> [ snip: output of "apt-key list" ]
>
> You have all the necessary keys for a normal Debian system. However, it
> seems that the DVDs and CDs simply do not contain Release.gpg files, so
> there are no signatures to check. (I looked at an old netinst CD and I
> downloaded the first Etch_r1 amd64 CD; I could not find a Release.gpg
> file on either one.)
>
> What you can do now is to check the md5sums and the sha1sums of the
> DVDs. If they match then you can be reasonably sure that all the
> individual packages on these DVDs are OK.
>
> First you need to download the files which list these checksums:
>
> wget http://cdimage.debian.org/debian-cd/4.0_r1/i386/iso-dvd/MD5SUMS{,.sign}
> wget
> http://cdimage.debian.org/debian-cd/4.0_r1/i386/iso-dvd/SHA1SUMS{,.sign}
I didn't notice until after I downloaded them that they are i386, but
I have amd64, but it was easy enough to find the amd64 ones. Then I
noticed that they are 4.0_r1 and I just have the original 4.0. That
is where I struck out and was unable to find any other than r1.
> Then you can verify the signatures on the two files:
>
> gpg --verify MD5SUMS.sign
> gpg --verify SHA1SUMS.sign
>
> These two commands should download Steve McIntyre's public key (ID
> 88C7C1F7) from a keyserver and then check if the current content of
> these files has indeed been signed by him. ("Good signature from ...")
I then discovered that I had never bothered setting up gnupg, so it
couldn't find a keyserver. I looked for documentation without
success, so it appears I will have to get to the non-free archives to
get documentation for gnupg (and many others).
> Now you can test if your DVDs have the same MD5 and SHA1 checksums as
> listed in MD5SUMS and SHA1SUMS. To calculate these checksums for your
> DVDs, put one of them into the drive and run:
>
> md5sum -b /dev/scd0
> sha1sum -b /dev/scd0
>
> You have to replace "/dev/scd0" with the correct device node of your DVD
> reader; check where the dvd symlink is pointing ("ls -l /dev/dvd").
> Calculating these sums for a whole DVD will take a while, even on a fast
> computer. You can run all the above commands as you normal user;
> however, you have to be a member of the "cdrom" group to read the raw
> DVD device.
I ran checksums on the first DVD and found they didn't match, as I
expected by now.
> Once you are happy about your DVDs, you can do this (as root):
>
> echo 'APT::Authentication::TrustCDROM "true";' >
> /etc/apt/apt.conf.d/99trust-cdrom
>
> This tells apt(itude) to trust all "cdrom:" sources. (The DVDs have
> cdrom: URIs in /etc/apt/sources.list, right?)
I ended up doing this anyways, since they are official DVDs from a
vendor listed at debian.org. I was going to file a bug about the
Release.gpg not being present, until I suddenly realized that they
can't put them on the ISO image without changing the checksum.
> > > > I also noticed
> > > > recently that some packages show multiple entries in aptitude, so
> > > > possibly clearing the entries would clear that.
> > >
> > > Do you mean multiple versions for the same package or the same package
> > > name as two separate entries? (The former would be OK, the latter would
> > > be cause for concern, I think.) Can you give an example with more
> > > details?
> >
> > I should have been more clear about that. I don't have different
> > versions since I just have packages from the Etch DVDs. It isn't in
> > the actual aptitude list, but instead in the individual package
> > entries. The list of packages that depend on the package sometimes
> > shows duplicate entries for packages that I already have. This may
> > just be an artifact of the way that aptitude tracks reverse
> > dependencies. An example is under apt, the list of 'packages which
> > depend on apt' includes:
> >
> > i debtags 1.6.6
> >
> > i debtags 1.6.6
>
> Hmm, can you post the output of "apt-cache policy debtags"?
Here it is, but debtags isn't the only one:
debtags:
Installed: 1.6.6
Candidate: 1.6.6
Version table:
*** 1.6.6 0
500 cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official amd64 DVD
Binary-1 20070407-12:15] etch/main Packages
100 /var/lib/dpkg/status
> > My /etc/apt/sources.list has only the 3 original Debian 4.0 DVD's, and
> > all other entries have been commented out throughout this time.
> >
> > Thanks for taking the time to look at this. This isn't a problem now,
> > but I am nervous about adding other packages from the net without some
> > verification that they are valid.
>
> Your system is already configured to check all the packages from the
> net, but it is important that that we get rid of the "untrusted" message
> for the DVD packages. (Otherwise you will get used to ignoring the
> warning or, even worse, you will be tempted to turn it off globally.)
Thanks for your help, but I finally decided to take your earlier
advice already and just mark the DVDs as trusted. At least I feel
better now that I know why it wouldn't trust the DVDs.
--
Carl Johnson [EMAIL PROTECTED]
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
