Change license to AGPL
This commit:
- Updates the `LICENSE` file
- Start every file with something like:
// Copyright YEAR_FIRST_PUBLISHED Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
---
First, I removed existing license headers with this Ruby 3.1.2 script:
require 'set'
EXTENSIONS_TO_CHECK = Set['.h', '.hpp', '.cpp', '.m', '.mm', '.pch', '.swift']
same = 0
different = 0
all_files = `git ls-files`.lines.map { |line| line.strip }
all_files.each do |relative_path|
if relative_path == 'Pods'
next
end
unless EXTENSIONS_TO_CHECK.include? File.extname(relative_path)
next
end
path = File.expand_path(relative_path)
contents = File.read(path)
new_contents = contents.sub(/\/\/\n\/\/ Copyright .*\n\/\/\n\n/, '')
if contents == new_contents
same += 1
else
different += 1
end
File.write(path, new_contents)
end
puts "updated #{different} file(s), left #{same} untouched"
I'm sure this script could be improved, but it worked well enough.
Then, I created `Scripts/lint/lint-license-headers` and ran it to auto-
fix a lot of files. This changed the mode of some files, but I think
that's actually desirable. For example,
`SignalServiceKit/src/Util/AppContext.m` previously had a mode of
`0755/-rwxr-xr-x`, and it's now `0644/-rw-r--r--`.
Then I fixed some stragglers and updated the precommit script.
See [a similar change in the Desktop app][0].
[0]: 8bfaf598af
This is the first meaty part of optimizing
fetching display names.
Some contacts fall back to phone numbers as their
display names. This PR fetches them in a single
SQL query via
`OWSContactsManager.phoneNumbers(for:, transaction)`.
To achieve this, this PR introduces
`GRDBSignalAccountFinder.signalAccounts(for:,transaction:)`
to fetch many accounts at once.
In order to fetch many accounts at once, we need
to be able to fetch many values from a
ModelReadCache at once. So this PR introduces
`ModelReadCache.readValues(for:,transaction:)` and
`ModelReadCache.getValues(for:,transaction:,returnNilOnCacheMiss:)`.
Existing methods that operate on a single value
were refactored to use the batch methods.
This PR adds tests for this functionality, which
necessitated changing the visibility of various
private symbols and also improving the fake
profile manager to make it more configurable.
There's also a tiny optimization for Refinery to
avoid calling a closure that has no work to do.
This helps elide do-nothing SQL queries that would
otherwise have been introduced.
This PR is the first in a series that will
optimize looking up full names of group members.
The biggest source of slowness when opening a
group chat is looking up the full names of group
members in the search for duplicates. It is slow
because it requires multiple db queries for each
member.
The characterstic feature of this algorithm is the
iterative process of assigning names to signal
addresses. For example, some contacts' names may
be cached. For others, their profiles must be
fetched. For those without profiles, their phone
numbers must be formatted (which requires fetching
SignalAccounts). For those without phone numbers,
their user names must be formatted.
This PR creates a class called Refinery. Its job
is to make it easy to assign values to keys
through multiple passes, where each pass may
succeed only for a subset of keys.
This is useful because we will eventually issue a
single DB query for some of these passes.
