microG flashable ZIP - Githubissues

Moved from WeAreFairphone/flashable-zips#1

@Roboe, 21 jun. 2017 20:14 CEST:

This is just an idea I think about sometimes. A flashable ZIP to integrate @microG apps into the system, for those AOSP-based OSes that refuse to apply the required patches.

What the ZIP should do:

Install official APKs from microg.org to /system/app, or /system/priv-app whether necessary.

Install at least one ready-to-use UnifiedNLP backend to userspace, maybe MozillaNlpBackend and NominatimGeocoderBackend (APKs from F-Droid)

Install an OTA survival script (addon.d), like:

F-Droid's privileged extension: https://gitlab.com/fdroid/privileged-extension/blob/master/app/src/main/scripts/80-fdroid.sh

and @OpenGApps: https://github.com/opengapps/opengapps/blob/master/scripts/bkup_tail.sh

~~I can't find docs about addon.d backup (bulletpoint 3). Help needed with this.~~ The script is well-documented in its first commit (it's just a script with life-cycle methods to implement), and LineageOS 50-cm.sh script is a reference implementation.

P.S.: Signature spoofing is not included because it seems to be hard to achieve from inside the phone.

@Roboe, 25 jun. 2017 20:19 CEST:

I've been doing some research for how to retrieve official APKs from microG's F-Droid repo:

F-Droid repo URL is: https://microg.org/fdroid/repo/

Repo index is a XML file located here: https://microg.org/fdroid/repo/index.xml

Root XML tag is fdroid and have an application tag child for each app.

application has a child marketvercode whose value equals the latest stable release for the app (which IMHO should be the one we should install).

application has multiple package childs, one per version.

package has a child versioncode with the version code value.

package has a child apkname with the full name of the APK file (which follows the pattern <appid>-<versioncode>.apk)

Appending the apkname value to the repo URL we get the download URL for each app.

This could be automated in a bash script, I need to figure a way to easily parse XML (XPath?) without dependencies, ideally

Edit: With python-lxml (Bash wrapper, kinda verbose, but preinstalled on most GNU/Linux distros):
python2 -c "from lxml.etree import parse; from sys import stdin; print '\n'.join(parse(stdin).xpath('/fdroid/application/@id'))" < index.xml
With xmlstarlet:
$ VERSION_CODE=$(xmlstarlet select -t -v "/fdroid/application[@id = 'com.google.android.gms']/marketvercode" index.xml)
$ xmlstarlet select -t -v "/fdroid/application[@id = 'com.google.android.gms']/package[versioncode = '$VERSION_CODE']/apkname" index.xml
com.google.android.gms-9258259.apk

WeAreFairphone / flashable-zip_microG

microG flashable ZIP #1