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Merge branch 'main' into glitch-soc/merge-upstream

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Conflicts:
- `app/controllers/home_controller.rb`:
  Upstream made it so `/web` is available to non-logged-in users
  and `/` redirects to `/web` instead of `/about`.
  Kept our version since glitch-soc's WebUI doesn't have what's
  needed yet and I think /about is still a much better landing
  page anyway.
- `app/models/form/admin_settings.rb`:
  Upstream added new settings, and glitch-soc had an extra setting.
  Not really a conflict.
  Added upstream's new settings.
- `app/serializers/initial_state_serializer.rb`:
  Upstream added a new `server` initial state object.
  Not really a conflict.
  Merged upstream's changes.
- `app/views/admin/settings/edit.html.haml`:
  Upstream added new settings.
  Not really a conflict.
  Merged upstream's changes.
- `app/workers/scheduler/feed_cleanup_scheduler.rb`:
  Upstream refactored that part and removed the file.
  Ported our relevant changes into `app/lib/vacuum/feeds_vacuum.rb`
- `config/settings.yml`:
  Upstream added new settings.
  Not a real conflict.
  Added upstream's new settings.
This commit is contained in:
Claire
2022-10-02 17:33:37 +02:00
parent 9d7c323abd c55219efa8
commit 221580a3af
390 changed files with 6881 additions and 4298 deletions
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88
app/controllers/concerns/signature_verification.rb
View File

@@ -45,10 +45,14 @@ module SignatureVerification
end
end
def require_signature!
def require_account_signature!
render plain: signature_verification_failure_reason, status: signature_verification_failure_code unless signed_request_account
end
def require_actor_signature!
render plain: signature_verification_failure_reason, status: signature_verification_failure_code unless signed_request_actor
end
def signed_request?
request.headers['Signature'].present?
end
@@ -68,7 +72,11 @@ module SignatureVerification
end
def signed_request_account
return @signed_request_account if defined?(@signed_request_account)
signed_request_actor.is_a?(Account) ? signed_request_actor : nil
end
def signed_request_actor
return @signed_request_actor if defined?(@signed_request_actor)
raise SignatureVerificationError, 'Request not signed' unless signed_request?
raise SignatureVerificationError, 'Incompatible request signature. keyId and signature are required' if missing_required_signature_parameters?
@@ -78,26 +86,30 @@ module SignatureVerification
verify_signature_strength!
verify_body_digest!
account = account_from_key_id(signature_params['keyId'])
actor = actor_from_key_id(signature_params['keyId'])
raise SignatureVerificationError, "Public key not found for key #{signature_params['keyId']}" if account.nil?
raise SignatureVerificationError, "Public key not found for key #{signature_params['keyId']}" if actor.nil?
signature = Base64.decode64(signature_params['signature'])
compare_signed_string = build_signed_string
return account unless verify_signature(account, signature, compare_signed_string).nil?
return actor unless verify_signature(actor, signature, compare_signed_string).nil?
account = stoplight_wrap_request { account.possibly_stale? ? account.refresh! : account_refresh_key(account) }
actor = stoplight_wrap_request { actor_refresh_key!(actor) }
raise SignatureVerificationError, "Public key not found for key #{signature_params['keyId']}" if account.nil?
raise SignatureVerificationError, "Public key not found for key #{signature_params['keyId']}" if actor.nil?
return account unless verify_signature(account, signature, compare_signed_string).nil?
return actor unless verify_signature(actor, signature, compare_signed_string).nil?
@signature_verification_failure_reason = "Verification failed for #{account.username}@#{account.domain} #{account.uri} using rsa-sha256 (RSASSA-PKCS1-v1_5 with SHA-256)"
@signed_request_account = nil
fail_with! "Verification failed for #{actor.to_log_human_identifier} #{actor.uri} using rsa-sha256 (RSASSA-PKCS1-v1_5 with SHA-256)"
rescue SignatureVerificationError => e
@signature_verification_failure_reason = e.message
@signed_request_account = nil
fail_with! e.message
rescue HTTP::Error, OpenSSL::SSL::SSLError => e
fail_with! "Failed to fetch remote data: #{e.message}"
rescue Mastodon::UnexpectedResponseError
fail_with! 'Failed to fetch remote data (got unexpected reply from server)'
rescue Stoplight::Error::RedLight
fail_with! 'Fetching attempt skipped because of recent connection failure'
end
def request_body
@@ -106,6 +118,11 @@ module SignatureVerification
private
def fail_with!(message)
@signature_verification_failure_reason = message
@signed_request_actor = nil
end
def signature_params
@signature_params ||= begin
raw_signature = request.headers['Signature']
@@ -138,13 +155,23 @@ module SignatureVerification
digests = request.headers['Digest'].split(',').map { |digest| digest.split('=', 2) }.map { |key, value| [key.downcase, value] }
sha256 = digests.assoc('sha-256')
raise SignatureVerificationError, "Mastodon only supports SHA-256 in Digest header. Offered algorithms: #{digests.map(&:first).join(', ')}" if sha256.nil?
raise SignatureVerificationError, "Invalid Digest value. Computed SHA-256 digest: #{body_digest}; given: #{sha256[1]}" if body_digest != sha256[1]
return if body_digest == sha256[1]
digest_size = begin
Base64.strict_decode64(sha256[1].strip).length
rescue ArgumentError
raise SignatureVerificationError, "Invalid Digest value. The provided Digest value is not a valid base64 string. Given digest: #{sha256[1]}"
end
raise SignatureVerificationError, "Invalid Digest value. The provided Digest value is not a SHA-256 digest. Given digest: #{sha256[1]}" if digest_size != 32
raise SignatureVerificationError, "Invalid Digest value. Computed SHA-256 digest: #{body_digest}; given: #{sha256[1]}"
end
def verify_signature(account, signature, compare_signed_string)
if account.keypair.public_key.verify(OpenSSL::Digest.new('SHA256'), signature, compare_signed_string)
@signed_request_account = account
@signed_request_account
def verify_signature(actor, signature, compare_signed_string)
if actor.keypair.public_key.verify(OpenSSL::Digest.new('SHA256'), signature, compare_signed_string)
@signed_request_actor = actor
@signed_request_actor
end
rescue OpenSSL::PKey::RSAError
nil
@@ -207,7 +234,7 @@ module SignatureVerification
signature_params['keyId'].blank? || signature_params['signature'].blank?
end
def account_from_key_id(key_id)
def actor_from_key_id(key_id)
domain = key_id.start_with?('acct:') ? key_id.split('@').last : key_id
if domain_not_allowed?(domain)
@@ -216,27 +243,34 @@ module SignatureVerification
end
if key_id.start_with?('acct:')
stoplight_wrap_request { ResolveAccountService.new.call(key_id.gsub(/\Aacct:/, '')) }
stoplight_wrap_request { ResolveAccountService.new.call(key_id.gsub(/\Aacct:/, ''), suppress_errors: false) }
elsif !ActivityPub::TagManager.instance.local_uri?(key_id)
account = ActivityPub::TagManager.instance.uri_to_resource(key_id, Account)
account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false) }
account = ActivityPub::TagManager.instance.uri_to_actor(key_id)
account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false, suppress_errors: false) }
account
end
rescue Mastodon::HostValidationError
nil
rescue Mastodon::PrivateNetworkAddressError => e
raise SignatureVerificationError, "Requests to private network addresses are disallowed (tried to query #{e.host})"
rescue Mastodon::HostValidationError, ActivityPub::FetchRemoteActorService::Error, ActivityPub::FetchRemoteKeyService::Error, Webfinger::Error => e
raise SignatureVerificationError, e.message
end
def stoplight_wrap_request(&block)
Stoplight("source:#{request.remote_ip}", &block)
.with_fallback { nil }
.with_threshold(1)
.with_cool_off_time(5.minutes.seconds)
.with_error_handler { |error, handle| error.is_a?(HTTP::Error) || error.is_a?(OpenSSL::SSL::SSLError) ? handle.call(error) : raise(error) }
.run
end
def account_refresh_key(account)
return if account.local? || !account.activitypub?
ActivityPub::FetchRemoteAccountService.new.call(account.uri, only_key: true)
def actor_refresh_key!(actor)
return if actor.local? || !actor.activitypub?
return actor.refresh! if actor.respond_to?(:refresh!) && actor.possibly_stale?
ActivityPub::FetchRemoteActorService.new.call(actor.uri, only_key: true, suppress_errors: false)
rescue Mastodon::PrivateNetworkAddressError => e
raise SignatureVerificationError, "Requests to private network addresses are disallowed (tried to query #{e.host})"
rescue Mastodon::HostValidationError, ActivityPub::FetchRemoteActorService::Error, Webfinger::Error => e
raise SignatureVerificationError, e.message
end
end