370ff654e7
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
37 lines
1.4 KiB
Swift
37 lines
1.4 KiB
Swift
//
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// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import Foundation
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// This code is ported from Android.
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// See <https://github.com/signalapp/Signal-Android/blob/cdcb1de3d4c0a6c7ff7f80eed37b490743c311e5/libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/PushTransportDetails.java#L12-L57>.
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extension Data {
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public var paddedMessageBody: Data {
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let paddingLength: Int = {
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// We have our own padding scheme, but so does the cipher.
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// The +2 here is to ensure the cipher has room for a padding byte, plus the separator byte.
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// The -2 at the end of this undoes that.
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let messageLengthWithTerminator = self.count + 2
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var messagePartCount = messageLengthWithTerminator / 160
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if !messageLengthWithTerminator.isMultiple(of: 160) {
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messagePartCount += 1
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}
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let resultLength = messagePartCount * 160
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return resultLength - 2 - self.count
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}()
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return self + [0x80] + Data(count: paddingLength)
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}
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public func withoutPadding() -> Data {
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guard
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let lastNonZeroByteIndex = self.lastIndex(where: { $0 != 0 }),
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self[lastNonZeroByteIndex] == 0x80 else {
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Logger.warn("Failed to find padding byte, returning unstripped data")
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return self
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}
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return self[..<lastNonZeroByteIndex]
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}
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}
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