Dan Minor b4a9997899 Bug 1624253 - Catch panic in mdns_service_generate_uuid; r=mjf
In rare cases, the random number generator can fail to initialize when
generating a v4 UUID, causing a panic and crash. This adds code to catch that
panic and return a nil (all zeros) UUID instead. Using a nil UUID seems better
from a user privacy perspective than failing to obfuscate the host address and
leaking it when it is expected to be hidden.

Longer term, we might want to switch over to using nsIUUIDGenerator, but that
would require changes to how the socket process is initialized.

Differential Revision: https://phabricator.services.mozilla.com/D70172

--HG--
extra : moz-landing-system : lando
2020-04-08 14:20:38 +00:00
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