Merge remote-tracking branch 'origin/master' into gs-master

  Conflicts:
 	.travis.yml
 	Gemfile.lock
 	README.md
 	app/controllers/settings/follower_domains_controller.rb
 	app/controllers/statuses_controller.rb
 	app/javascript/mastodon/locales/ja.json
 	app/lib/feed_manager.rb
 	app/models/media_attachment.rb
 	app/models/mute.rb
 	app/models/status.rb
 	app/services/mute_service.rb
 	app/views/home/index.html.haml
 	app/views/stream_entries/_simple_status.html.haml
 	config/locales/ca.yml
 	config/locales/en.yml
 	config/locales/es.yml
 	config/locales/fr.yml
 	config/locales/nl.yml
 	config/locales/pl.yml
 	config/locales/pt-BR.yml
 	config/themes.yml

5 files changed, 76 insertions, 24 deletions

diff --git a/app/models/concerns/account_interactions.rb b/app/models/concerns/account_interactions.rb
index 3830ba9b0..20fc74ba6 100644
--- a/app/models/concerns/account_interactions.rb
+++ b/app/models/concerns/account_interactions.rb
@@ -20,6 +20,10 @@ module AccountInteractions
       follow_mapping(Block.where(target_account_id: target_account_ids, account_id: account_id), :target_account_id)
     end
 
+    def blocked_by_map(target_account_ids, account_id)
+      follow_mapping(Block.where(account_id: target_account_ids, target_account_id: account_id), :account_id)
+    end
+
     def muting_map(target_account_ids, account_id)
       Mute.where(target_account_id: target_account_ids, account_id: account_id).each_with_object({}) do |mute, mapping|
         mapping[mute.target_account_id] = {
@@ -38,8 +42,12 @@ module AccountInteractions
 
     def domain_blocking_map(target_account_ids, account_id)
       accounts_map    = Account.where(id: target_account_ids).select('id, domain').map { |a| [a.id, a.domain] }.to_h
-      blocked_domains = AccountDomainBlock.where(account_id: account_id, domain: accounts_map.values).pluck(:domain)
-      accounts_map.map { |id, domain| [id, blocked_domains.include?(domain)] }.to_h
+      blocked_domains = domain_blocking_map_by_domain(accounts_map.values.compact, account_id)
+      accounts_map.map { |id, domain| [id, blocked_domains[domain]] }.to_h
+    end
+
+    def domain_blocking_map_by_domain(target_domains, account_id)
+      follow_mapping(AccountDomainBlock.where(account_id: account_id, domain: target_domains), :domain)
     end
 
     private
@@ -93,6 +101,7 @@ module AccountInteractions
     if mute.hide_notifications? != notifications
       mute.update!(hide_notifications: notifications)
     end
+    mute
   end
 
   def mute_conversation!(conversation)
diff --git a/app/models/concerns/attachmentable.rb b/app/models/concerns/attachmentable.rb
index 90ce88463..6f8489b89 100644
--- a/app/models/concerns/attachmentable.rb
+++ b/app/models/concerns/attachmentable.rb
@@ -1,10 +1,15 @@
 # frozen_string_literal: true
 
+require 'mime/types'
+
 module Attachmentable
   extend ActiveSupport::Concern
 
+  MAX_MATRIX_LIMIT = 16_777_216 # 4096x4096px or approx. 16MB
+
   included do
     before_post_process :set_file_extensions
+    before_post_process :check_image_dimensions
   end
 
   private
@@ -12,10 +17,31 @@ module Attachmentable
   def set_file_extensions
     self.class.attachment_definitions.each_key do |attachment_name|
       attachment = send(attachment_name)
+
       next if attachment.blank?
-      extension = Paperclip::Interpolations.content_type_extension(attachment, :original)
-      basename  = Paperclip::Interpolations.basename(attachment, :original)
-      attachment.instance_write :file_name, [basename, extension].delete_if(&:blank?).join('.')
+
+      attachment.instance_write :file_name, [Paperclip::Interpolations.basename(attachment, :original), appropriate_extension(attachment)].delete_if(&:blank?).join('.')
+    end
+  end
+
+  def check_image_dimensions
+    self.class.attachment_definitions.each_key do |attachment_name|
+      attachment = send(attachment_name)
+
+      next if attachment.blank? || !attachment.content_type.match?(/image.*/) || attachment.queued_for_write[:original].blank?
+
+      width, height = FastImage.size(attachment.queued_for_write[:original].path)
+
+      raise Mastodon::DimensionsValidationError, "#{width}x#{height} images are not supported" if width.present? && height.present? && (width * height >= MAX_MATRIX_LIMIT)
     end
   end
+
+  def appropriate_extension(attachment)
+    mime_type = MIME::Types[attachment.content_type]
+
+    extensions_for_mime_type = mime_type.empty? ? [] : mime_type.first.extensions
+    original_extension       = Paperclip::Interpolations.extension(attachment, :original)
+
+    extensions_for_mime_type.include?(original_extension) ? original_extension : extensions_for_mime_type.first
+  end
 end
diff --git a/app/models/concerns/cacheable.rb b/app/models/concerns/cacheable.rb
index 51451d260..d7524cdfd 100644
--- a/app/models/concerns/cacheable.rb
+++ b/app/models/concerns/cacheable.rb
@@ -3,14 +3,19 @@
 module Cacheable
   extend ActiveSupport::Concern
 
-  class_methods do
+  module ClassMethods
+    @cache_associated = []
+
     def cache_associated(*associations)
       @cache_associated = associations
     end
-  end
 
-  included do
-    scope :with_includes, -> { includes(@cache_associated) }
-    scope :cache_ids, -> { select(:id, :updated_at) }
+    def with_includes
+      includes(@cache_associated)
+    end
+
+    def cache_ids
+      select(:id, :updated_at)
+    end
   end
 end
diff --git a/app/models/concerns/remotable.rb b/app/models/concerns/remotable.rb
index 3b8c507c3..7f1ef5191 100644
--- a/app/models/concerns/remotable.rb
+++ b/app/models/concerns/remotable.rb
@@ -38,7 +38,7 @@ module Remotable
 
             self[attribute_name] = url if has_attribute?(attribute_name)
           end
-        rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError => e
+        rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError, Mastodon::LengthValidationError => e
           Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
           nil
         end
diff --git a/app/models/concerns/status_threading_concern.rb b/app/models/concerns/status_threading_concern.rb
index fffc095ee..8e817be00 100644
--- a/app/models/concerns/status_threading_concern.rb
+++ b/app/models/concerns/status_threading_concern.rb
@@ -7,8 +7,8 @@ module StatusThreadingConcern
     find_statuses_from_tree_path(ancestor_ids(limit), account)
   end
 
-  def descendants(account = nil)
-    find_statuses_from_tree_path(descendant_ids, account)
+  def descendants(limit, account = nil, max_child_id = nil, since_child_id = nil, depth = nil)
+    find_statuses_from_tree_path(descendant_ids(limit, max_child_id, since_child_id, depth), account)
   end
 
   private
@@ -46,34 +46,46 @@ module StatusThreadingConcern
     SQL
   end
 
-  def descendant_ids
-    descendant_statuses.pluck(:id)
+  def descendant_ids(limit, max_child_id, since_child_id, depth)
+    descendant_statuses(limit, max_child_id, since_child_id, depth).pluck(:id)
   end
 
-  def descendant_statuses
-    Status.find_by_sql([<<-SQL.squish, id: id])
+  def descendant_statuses(limit, max_child_id, since_child_id, depth)
+    Status.find_by_sql([<<-SQL.squish, id: id, limit: limit, max_child_id: max_child_id, since_child_id: since_child_id, depth: depth])
       WITH RECURSIVE search_tree(id, path)
       AS (
         SELECT id, ARRAY[id]
         FROM statuses
-        WHERE in_reply_to_id = :id
+        WHERE in_reply_to_id = :id AND COALESCE(id < :max_child_id, TRUE) AND COALESCE(id > :since_child_id, TRUE)
         UNION ALL
         SELECT statuses.id, path || statuses.id
         FROM search_tree
         JOIN statuses ON statuses.in_reply_to_id = search_tree.id
-        WHERE NOT statuses.id = ANY(path)
+        WHERE COALESCE(array_length(path, 1) < :depth, TRUE) AND NOT statuses.id = ANY(path)
       )
       SELECT id
       FROM search_tree
       ORDER BY path
+      LIMIT :limit
     SQL
   end
 
   def find_statuses_from_tree_path(ids, account)
-    statuses = statuses_with_accounts(ids).to_a
+    statuses    = statuses_with_accounts(ids).to_a
+    account_ids = statuses.map(&:account_id).uniq
+    domains     = statuses.map(&:account_domain).compact.uniq
+
+    relations = if account.present?
+                  {
+                    blocking: Account.blocking_map(account_ids, account.id),
+                    blocked_by: Account.blocked_by_map(account_ids, account.id),
+                    muting: Account.muting_map(account_ids, account.id),
+                    following: Account.following_map(account_ids, account.id),
+                    domain_blocking_by_domain: Account.domain_blocking_map_by_domain(domains, account.id),
+                  }
+                end
 
-    # FIXME: n+1 bonanza
-    statuses.reject! { |status| filter_from_context?(status, account) }
+    statuses.reject! { |status| filter_from_context?(status, account, relations) }
 
     # Order ancestors/descendants by tree path
     statuses.sort_by! { |status| ids.index(status.id) }
@@ -83,7 +95,7 @@ module StatusThreadingConcern
     Status.where(id: ids).includes(:account)
   end
 
-  def filter_from_context?(status, account)
-    StatusFilter.new(status, account).filtered?
+  def filter_from_context?(status, account, relations)
+    StatusFilter.new(status, account, relations).filtered?
   end
 end