Fix error resposes for `from` search prefix (#17963)

* Fix error responses in `from` search prefix (addresses mastodon/mastodon#17941)

Using unsupported prefixes now reports a 422; searching for posts from an
account the instance is not aware of reports a 404. TODO: The UI for this
on the front end is abysmal.

Searching `from:username@domain` now succeeds when `domain` is the local
domain; searching `from:@username(@domain)?` now works as expected.

* Remove unused methods on new Error classes as they are not being used

Currently when `raise`d there are error messages being supplied, but
this is not actually being used. The associated `raise`s have been
edited accordingly.

* Remove needless comments

* Satisfy rubocop

* Try fixing tests being unable to find AccountFindingConcern methods

* Satisfy rubocop

* Simplify `from` prefix logic

This incorporates @ClearlyClaire's suggestion (see
https://github.com/mastodon/mastodon/pull/17963#pullrequestreview-933986737).

Accepctable account strings in `from:` clauses are more lenient than
before this commit; for example, `from:@user@example.org@asnteo +cat`
will not error, and return posts by @user@example.org containing the
word "cat". This is more consistent with how Mastodon matches mentions
in statuses. In addition, `from` clauses will not be checked for
syntatically invalid usernames or domain names, simply 404ing when
`Account.find_remote!` raises ActiveRecord::NotFound.

New code for this PR that is no longer used has been removed.
signup-info-prompt
0x2019 2022-04-08 19:21:49 +00:00 committed by GitHub
parent 82655597db
commit 012537452a
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3 changed files with 9 additions and 4 deletions

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@ -11,6 +11,10 @@ class Api::V2::SearchController < Api::BaseController
def index
@search = Search.new(search_results)
render json: @search, serializer: REST::SearchSerializer
rescue Mastodon::SyntaxError
unprocessable_entity
rescue ActiveRecord::RecordNotFound
not_found
end
private

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@ -88,14 +88,14 @@ class SearchQueryTransformer < Parslet::Transform
case prefix
when 'from'
@filter = :account_id
username, domain = term.split('@')
account = Account.find_remote(username, domain)
raise "Account not found: #{term}" unless account
username, domain = term.gsub(/\A@/, '').split('@')
domain = nil if TagManager.instance.local_domain?(domain)
account = Account.find_remote!(username, domain)
@term = account.id
else
raise "Unknown prefix: #{prefix}"
raise Mastodon::SyntaxError
end
end
end

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@ -10,6 +10,7 @@ module Mastodon
class StreamValidationError < ValidationError; end
class RaceConditionError < Error; end
class RateLimitExceededError < Error; end
class SyntaxError < Error; end
class UnexpectedResponseError < Error
attr_reader :response