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Limits which key(s) can be used to sign a repository. Not immensely useful
from a security perspective all by itself, but if the user has
additional measures in place to confine a repository (like pinning) an
attacker who gets the key for such a repository is limited to its
potential and can't use the key to sign its attacks for an other (maybe
less limited) repository… (yes, this is as weak as it sounds, but having
the capability might come in handy for implementing other stuff later).
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Git-Dch: Ignore
Reported-By: gcc -Wsuggest-attribute={pure,const,noreturn}
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Beside being a bit cleaner it hopefully also resolves oddball problems
I have with high levels of parallel jobs.
Git-Dch: Ignore
Reported-By: iwyu (include-what-you-use)
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Git-Dch: Ignore
Reported-By: gcc -Wpedantic
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With the selfgrown splitting we got the problem of not recovering
from networks which just reply with invalid data like those sending
us login pages to authenticate with the network (e.g. hotels) back.
The good thing about the InRelease file is that we know that it must
be clearsigned (a Release file might or might not have a detached sig)
so if we get a file but are unable to split it something is seriously
wrong, so there is not much point in trying further.
The Acquire system already looks out for a NODATA error from gpgv,
so this adds a new error message sent to the acquire system in case
the splitting we do now ourselves failed including this magic word.
Closes: #712486
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free to escape all lines (we have no lines in our files which need
to be escaped as these would be invalid fieldnames) and while ExecGPGV
would detect dash-escaped text as invalid (as its not expected in
messages with detached signatures) it would be possible to "comment"
lines in (signed) dsc files which are only parsed but not verified
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apt-pkg/deb/deblistparser.cc:
- use OpenMaybeClearSignedFile to be free from detecting and
skipping clearsigning metadata in dsc and Release files
We can't write a "clean" file to disk as not all acquire methods copy
Release files before checking them (e.g. cdrom), so this reverts recombining,
but uses the method we use for dsc files also in the two places we
deal with Release files
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* ftparchive/writer.cc:
- use OpenMaybeClearSignedFile to be free from detecting and
skipping clearsigning metadata in dsc files
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into data and signatures, pass it to gpgv for verification and
recombines it after that in a known-good way without unsigned blocks
and whitespaces resulting usually in more or less the same file as
before, but later code can be sure about the format
* apt-pkg/deb/debmetaindex.cc:
- reenable InRelease by default
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- ExecGPGV is a method which should never return, so mark it as such
and fix the inconsistency of returning in error cases
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- rename RunGPGV to ExecGPGV and move it to apt-pkg/contrib/gpgv.cc
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