openjdk-11 11.0.17 in Debian unstable fails to verify weak signatures:
jarsigner -verbose -strict -verify tests/signindex/guardianproject.jar
131 Fri Dec 02 20:10:00 CET 2016 META-INF/MANIFEST.MF
252 Fri Dec 02 20:10:04 CET 2016 META-INF/1.SF
2299 Fri Dec 02 20:10:04 CET 2016 META-INF/1.RSA
0 Fri Dec 02 20:09:58 CET 2016 META-INF/
m ? 48743 Fri Dec 02 20:09:58 CET 2016 index.xml
s = signature was verified
m = entry is listed in manifest
k = at least one certificate was found in keystore
? = unsigned entry
- Signed by "EMAILADDRESS=root@guardianproject.info, CN=guardianproject.info, O=Guardian Project, OU=FDroid Repo, L=New York, ST=New York, C=US"
Digest algorithm: SHA1 (disabled)
Signature algorithm: SHA1withRSA (disabled), 4096-bit key
WARNING: The jar will be treated as unsigned, because it is signed with a weak algorithm that is now disabled by the security property:
jdk.jar.disabledAlgorithms=MD2, MD5, RSA keySize < 1024, DSA keySize < 1024, SHA1 denyAfter 2019-01-01, include jdk.disabled.namedCurves
The current signing method uses apksigner to sign the JAR so that it
will automatically select algorithms that are compatible with Android
SDK 23, which added the most recent algorithms:
https://developer.android.com/reference/java/security/Signature
This signing method uses then inherits the default signing algothim
settings, since Java and Android both maintain those. That helps
avoid a repeat of being stuck on an old signing algorithm. That means
specifically that this call to apksigner does not specify any of the
algorithms.
The old indexes must be signed by SHA1withRSA otherwise they will no
longer be compatible with old Androids.
apksigner 30.0.0+ is available in Debian/bullseye, Debian/buster-backports,
Ubuntu 21.10, and Ubuntu 20.04 from the fdroid PPA. Here's a quick way to
test:
for f in `ls -1 /opt/android-sdk/build-tools/*/apksigner | sort ` /usr/bin/apksigner; do printf "$f : "; $f sign --v4-signing-enabled false; done
closes#1005
When using `fdroid update --nosign` in combo with `fdroid signindex`, the
unsigned index files have to be copied to a thumb drive or something in
order to be brought to the offline signing server. This reuses the config
option local_copy_dir as the destination for those unsigned index files.
Throughout the fdroidserver code base, "_()" is used for localizing
strings. So it should not be used as an ignored variable name. Those
should be called "_ignored".
There are so many possible installation paths for Python modules, it has
been very hard to even find and test them all. This adds a fallback option
if the examples dir cannot be found. A repo can work without an icon or
the example config.py.
This removes the fake assumption that the icon can be a full path in the
config.py. While the path was being properly passed through to the index
file, the file was never copied properly into place nor rsynced to the web
server.
Before, it would never set current_version_file to the current APK since it
first set current_version_code, then tested against CurrentVersionCode. So
if there is only a single APK and its the CurrentVersionCode, then
current_version_file would not get set.
refs #772
Since metadata files are now YAML, programs should be able to just read in
the .yml files, then use them with fdroidserver methods without having to
know about the App class. The App class just provides syntactic sugar by
allowing dict keys to be accessed as attributes.
The .txt format was the last place where the lowercase "builds" was used,
this converts references everywhere to be "Builds". This makes it possible
to load metadata YAML files with any YAML parser, then have it possible to
use fdroidserver methods on that data, like metadata.write_metadata().
The test files in tests/metadata/dump/*.yaml were manually edited by cutting
the builds: block and putting it the sort order for Builds: so the contents
should be unchanged.
```
sed -i \
-e 's/app\.builds/app.get('Builds', \[\])/g' \
-e "s/app\.get(Builds, \[\]) =/app\['Builds'] =/g" \
-e "s/app\.get(Builds, \[\]) =/app\['Builds'] =/g" \
-e "s/app\.get(Builds, \[\])/app.get('Builds', \[\])/g" \
-e "s/app\.get('Builds', \[\])\.append/app\['Builds'\].append/g" \
-e "s/app\['builds'\]/app.get('Builds', [])/g" \
*/*.*
```
The key fingerprint should be only hex digits, everything else can be
discarded. That makes it easy to use this function various fingerprint
formats, including the common, human-readable forms spaces between pairs or
quartets.
