Ticket27838 035 01 #438
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Ticket27838 035 01 #438
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Before this commit, we would create the descriptor signing key certificate when first building the descriptor. In some extreme cases, it lead to the expiry of the certificate which triggers a BUG() when encoding the descriptor before uploading. Ticket #27838 details a possible scenario in which this can happen. It is an edge case where tor losts internet connectivity, notices it and closes all circuits. When it came back up, the HS subsystem noticed that it had no introduction circuits, created them and tried to upload the descriptor. However, in the meantime, if tor did lack a live consensus because it is currently seeking to download one, we would consider that we don't need to rotate the descriptors leading to using the expired signing key certificate. That being said, this commit does a bit more to make this process cleaner. There are a series of things that we need to "refresh" before uploading a descriptor: signing key cert, intro points and revision counter. A refresh function is added to deal with all mutable descriptor fields. It in turn simplified a bit the code surrounding the creation of the plaintext data. We keep creating the cert when building the descriptor in order to accomodate the unit tests. However, it is replaced every single time the descriptor is uploaded. Fixes #27838 Signed-off-by: David Goulet <dgoulet@torproject.org>
…oints. With the new refresh_service_descriptor() function we had both refresh_service_descriptor() and update_service_descriptor() which is basically the same thing. This commit renames update_service_descriptor() to update_service_descriptor_intro_points() to make it clear it's not a generic refresh and it's only about intro points. Commit changes no code.
Move the elements around to concentrate mutable and immutable elements together. This commit changes no code, check with --color-moved.
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