support arch:all data e.g. in separate Packages file

Based on a discussion with Niels Thykier who asked for Contents-all this
implements apt trying for all architecture dependent files to get a file
for the architecture all, which is treated internally now as an official
architecture which is always around (like native). This way arch:all
data can be shared instead of duplicated for each architecture requiring
the user to download the same information again and again.

There is one problem however: In Debian there is already a binary-all/
Packages file, but the binary-any files still include arch:all packages,
so that downloading this file now would be a waste of time, bandwidth
and diskspace. We therefore need a way to decide if it makes sense to
download the all file for Packages in Debian or not. The obvious answer
would be a special flag in the Release file indicating this, which would
need to default to 'no' and every reasonable repository would override
it to 'yes' in a few years time, but the flag would be there "forever".

Looking closer at a Release file we see the field "Architectures", which
doesn't include 'all' at the moment. With the idea outlined above that
'all' is a "proper" architecture now, we interpret this field as being
authoritative in declaring which architectures are supported by this
repository. If it says 'all', apt will try to get all, if not it will be
skipped. This gives us another interesting feature: If I configure a
source to download armel and mips, but it declares it supports only
armel apt will now print a notice saying as much. Previously this was a
very cryptic failure. If on the other hand the repository supports mips,
too, but for some reason doesn't ship mips packages at the moment, this
'missing' file is silently ignored (= that is the same as the repository
including an empty file).

The Architectures field isn't mandatory through, so if it isn't there,
we assume that every architecture is supported by this repository, which
skips the arch:all if not listed in the release file.

1 files changed, 18 insertions, 4 deletions

diff --git a/test/integration/test-apt-sources-deb822 b/test/integration/test-apt-sources-deb822
index 662a866aa..c29fde0c4 100755
--- a/test/integration/test-apt-sources-deb822
+++ b/test/integration/test-apt-sources-deb822
@@ -30,38 +30,41 @@ msgcleantest 'Test sources.list' 'old style'
 echo "deb http://ftp.debian.org/debian stable main" > $LISTS
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style with tabs'
 echo "deb	http://ftp.debian.org/debian	stable main" > $LISTS
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style with forgotten end for options'
 echo "deb [trusted=yes arch+=armel,powerpc http://ftp.debian.org/debian stable main" > $LISTS
-testfailureequal "E: Malformed entry 1 in list file $ABSLISTS ([option] not assignment)
+testfailureequal --nomsg "E: Malformed entry 1 in list file $ABSLISTS ([option] not assignment)
 E: The list of sources could not be read." aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style with stray ] instead of options'
 echo "deb ] http://ftp.debian.org/debian stable main" > $LISTS
-testfailureequal "E: Malformed entry 1 in list file $ABSLISTS (URI parse)
+testfailureequal --nomsg "E: Malformed entry 1 in list file $ABSLISTS (URI parse)
 E: The list of sources could not be read." aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style options no key'
 echo "deb [=test] http://ftp.debian.org/debian stable main" > $LISTS
-testfailureequal "E: Malformed entry 1 in list file $ABSLISTS ([option] no key)
+testfailureequal --nomsg "E: Malformed entry 1 in list file $ABSLISTS ([option] no key)
 E: The list of sources could not be read." aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style options no value'
 echo "deb [test=] http://ftp.debian.org/debian stable main" > $LISTS
-testfailureequal "E: Malformed entry 1 in list file $ABSLISTS ([option] no value)
+testfailureequal --nomsg "E: Malformed entry 1 in list file $ABSLISTS ([option] no value)
 E: The list of sources could not be read." aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style with options'
 echo "deb [trusted=yes arch+=armel,powerpc] http://ftp.debian.org/debian stable main" > $LISTS
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-armel/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-armel_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-powerpc/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-powerpc_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
@@ -70,18 +73,21 @@ msgcleantest 'Test sources.list' 'old style with comments'
 echo "deb http://ftp.debian.org/debian stable main # non-free" > $LISTS
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'old style with option comments'
 echo "deb [trusted=yes#yeahreally] http://ftp.debian.org/debian stable main # non-free" > $LISTS
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test sources.list' 'simple deb822'
 echo "$BASE"  > $SOURCES
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test deb822 with' 'two entries'
@@ -91,9 +97,11 @@ echo "" >> $SOURCES
 echo "$BASE" | sed  s/stable/unstable/  >> $SOURCES
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 
 'http://ftp.debian.org/debian/dists/unstable/InRelease' ftp.debian.org_debian_dists_unstable_InRelease 0 
 'http://ftp.debian.org/debian/dists/unstable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_unstable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/unstable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_unstable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/unstable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_unstable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 # two suite entries
@@ -101,9 +109,11 @@ msgcleantest 'Test deb822 with' 'two Suite entries'
 echo "$BASE"  | sed -e "s/stable/stable unstable/" > $SOURCES
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 
 'http://ftp.debian.org/debian/dists/unstable/InRelease' ftp.debian.org_debian_dists_unstable_InRelease 0 
 'http://ftp.debian.org/debian/dists/unstable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_unstable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/unstable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_unstable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/unstable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_unstable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test deb822' 'architecture option'
@@ -112,6 +122,7 @@ echo "Architectures: amd64 armel" >> $SOURCES
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-amd64_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-armel/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-armel_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 msgcleantest 'Test old-style' 'suite arch variable'
@@ -150,9 +161,11 @@ msgcleantest 'Test deb822 sources.list file which has' 'Multiple URIs work'
 echo "$BASE"  | sed -e 's#http://ftp.debian.org/debian#http://ftp.debian.org/debian http://ftp.de.debian.org/debian#' > $SOURCES
 testsuccessequal --nomsg  "'http://ftp.de.debian.org/debian/dists/stable/InRelease' ftp.de.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.de.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.de.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.de.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.de.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.de.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.de.debian.org_debian_dists_stable_main_i18n_Translation-en 0 
 'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 # multiple Type in one field
@@ -161,6 +174,7 @@ echo "$BASE"  | sed -e 's#Types: deb#Types: deb deb-src#' > $SOURCES
 testsuccessequal --nomsg "'http://ftp.debian.org/debian/dists/stable/InRelease' ftp.debian.org_debian_dists_stable_InRelease 0 
 'http://ftp.debian.org/debian/dists/stable/main/source/Sources.xz' ftp.debian.org_debian_dists_stable_main_source_Sources 0 
 'http://ftp.debian.org/debian/dists/stable/main/binary-i386/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-i386_Packages 0 
+'http://ftp.debian.org/debian/dists/stable/main/binary-all/Packages.xz' ftp.debian.org_debian_dists_stable_main_binary-all_Packages 0 
 'http://ftp.debian.org/debian/dists/stable/main/i18n/Translation-en.xz' ftp.debian.org_debian_dists_stable_main_i18n_Translation-en 0 " aptget update --print-uris
 
 # a Suite