After setting the options in my previous mail to false i found
firefox still was downloading binaries of libgmpopenh264.so and
libwidevinecdm.so.
I looked into the firefox sources (64.0~b12-2), and the installation
seems to be done by
toolkit/mozapps/extensions/internal/ProductAddonChecker.jsm by
ProductAddonChecker.getProductAddonList(). There is a config option
GMPPrefs.KEY_UPDATE_ENABLED to disable this, which is defined in
toolkit/modules/GMPUtils.jsm line 118. Setting this to false seems to
disable the binary blob downloads.
So in /etc/firefox/firefox.js (debian/browser.js.in in the source), the
option
pref("media.gmp-gmpopenh264.enabled", false);
should be changed to
pref("media.gmp-manager.updateEnabled", false);
Users needing to enable the EME and OpenH264 binaries can still change
this option in about:config.
Ingo
--
╭─╮ Kennedy's Lemma:
╭│───╮ If you can parse Perl, you can solve the Halting Problem.
│╰─│─╯
╰──╯ http://www.perlmonks.org/?node_id=663393
