discourse/app/models/remote_theme.rb

562 lines
17 KiB
Ruby

# frozen_string_literal: true
class RemoteTheme < ActiveRecord::Base
METADATA_PROPERTIES = %i[
license_url
about_url
authors
theme_version
minimum_discourse_version
maximum_discourse_version
]
class ImportError < StandardError
end
ALLOWED_FIELDS = %w[
scss
embedded_scss
embedded_header
head_tag
header
after_header
body_tag
footer
]
GITHUB_REGEXP = %r{\Ahttps?://github\.com/}
GITHUB_SSH_REGEXP = %r{\Assh://git@github\.com:}
MAX_METADATA_FILE_SIZE = Discourse::MAX_METADATA_FILE_SIZE
MAX_ASSET_FILE_SIZE = 8.megabytes
MAX_THEME_FILE_COUNT = 1024
MAX_THEME_SIZE = 256.megabytes
MAX_THEME_SCREENSHOT_FILE_SIZE = 1.megabyte
MAX_THEME_SCREENSHOT_DIMENSIONS = [3840, 2160] # 4K resolution
THEME_SCREENSHOT_ALLOWED_FILE_TYPES = %w[.jpg .jpeg .gif .png].freeze
has_one :theme, autosave: false
scope :joined_remotes,
-> do
joins("JOIN themes ON themes.remote_theme_id = remote_themes.id").where.not(
remote_url: "",
)
end
validates_format_of :minimum_discourse_version,
:maximum_discourse_version,
with: Discourse::VERSION_REGEXP,
allow_nil: true
def self.extract_theme_info(importer)
if importer.file_size("about.json") > MAX_METADATA_FILE_SIZE
raise ImportError.new I18n.t(
"themes.import_error.about_json_too_big",
limit:
ActiveSupport::NumberHelper.number_to_human_size(
MAX_METADATA_FILE_SIZE,
),
)
end
begin
json = JSON.parse(importer["about.json"])
json.fetch("name")
json
rescue TypeError, JSON::ParserError, KeyError
raise ImportError.new I18n.t("themes.import_error.about_json")
end
end
def self.update_zipped_theme(
filename,
original_filename,
user: Discourse.system_user,
theme_id: nil,
update_components: nil,
run_migrations: true
)
update_theme(
ThemeStore::ZipImporter.new(filename, original_filename),
user:,
theme_id:,
update_components:,
run_migrations:,
)
end
# This is only used in the development and test environment and is currently not supported for other environments
if Rails.env.test? || Rails.env.development?
def self.import_theme_from_directory(directory)
update_theme(ThemeStore::DirectoryImporter.new(directory), update_components: "none")
end
end
def self.update_theme(
importer,
user: Discourse.system_user,
theme_id: nil,
update_components: nil,
run_migrations: true
)
importer.import!
theme_info = RemoteTheme.extract_theme_info(importer)
theme = Theme.find_by(id: theme_id) if theme_id # New theme CLI method
existing = true
if theme.blank?
theme = Theme.new(user_id: user&.id || -1, name: theme_info["name"], auto_update: false)
existing = false
end
theme.component = theme_info["component"].to_s == "true"
theme.child_components = child_components = theme_info["components"].presence || []
theme.skip_child_components_update = true if update_components == "none"
remote_theme = new
remote_theme.theme = theme
remote_theme.remote_url = ""
do_update_child_components = false
theme.transaction do
remote_theme.update_from_remote(
importer,
skip_update: true,
already_in_transaction: true,
run_migrations:,
)
if existing && update_components.present? && update_components != "none"
child_components = child_components.map { |url| ThemeStore::GitImporter.new(url.strip).url }
if update_components == "sync"
ChildTheme
.joins(child_theme: :remote_theme)
.where("remote_themes.remote_url NOT IN (?)", child_components)
.delete_all
end
child_components -=
theme
.child_themes
.joins(:remote_theme)
.where("remote_themes.remote_url IN (?)", child_components)
.pluck("remote_themes.remote_url")
theme.child_components = child_components
do_update_child_components = true
end
end
theme.update_child_components if do_update_child_components
theme
ensure
begin
importer.cleanup!
rescue => e
Rails.logger.warn("Failed cleanup remote path #{e}")
end
end
private_class_method :update_theme
def self.import_theme(url, user = Discourse.system_user, private_key: nil, branch: nil)
importer = ThemeStore::GitImporter.new(url.strip, private_key: private_key, branch: branch)
importer.import!
theme_info = RemoteTheme.extract_theme_info(importer)
component = [true, "true"].include?(theme_info["component"])
theme = Theme.new(user_id: user&.id || -1, name: theme_info["name"], component: component)
theme.child_components = theme_info["components"].presence || []
remote_theme = new
theme.remote_theme = remote_theme
remote_theme.private_key = private_key
remote_theme.branch = branch
remote_theme.remote_url = importer.url
remote_theme.update_from_remote(importer)
theme
ensure
begin
importer.cleanup!
rescue => e
Rails.logger.warn("Failed cleanup remote git #{e}")
end
end
def self.out_of_date_themes
self
.joined_remotes
.where("commits_behind > 0 OR remote_version <> local_version")
.where(themes: { enabled: true })
.pluck("themes.name", "themes.id")
end
def self.unreachable_themes
self.joined_remotes.where("last_error_text IS NOT NULL").pluck("themes.name", "themes.id")
end
def out_of_date?
commits_behind > 0 || remote_version != local_version
end
def update_remote_version
return unless is_git?
importer = ThemeStore::GitImporter.new(remote_url, private_key: private_key, branch: branch)
begin
importer.import!
rescue RemoteTheme::ImportError => err
self.last_error_text = err.message
else
self.updated_at = Time.zone.now
self.remote_version, self.commits_behind = importer.commits_since(local_version)
self.last_error_text = nil
ensure
self.save!
begin
importer.cleanup!
rescue => e
Rails.logger.warn("Failed cleanup remote git #{e}")
end
end
end
def update_from_remote(
importer = nil,
skip_update: false,
raise_if_theme_save_fails: true,
already_in_transaction: false,
run_migrations: true
)
cleanup = false
unless importer
cleanup = true
importer = ThemeStore::GitImporter.new(remote_url, private_key: private_key, branch: branch)
begin
importer.import!
rescue RemoteTheme::ImportError => err
self.last_error_text = err.message
self.save!
return self
else
self.last_error_text = nil
end
end
theme_info = RemoteTheme.extract_theme_info(importer)
updated_fields = []
theme_info["assets"]&.each do |name, relative_path|
if path = importer.real_path(relative_path)
upload = create_upload(path, relative_path)
if !upload.errors.empty?
raise ImportError,
I18n.t(
"themes.import_error.upload",
name: name,
errors: upload.errors.full_messages.join(","),
)
end
updated_fields << theme.set_field(
target: :common,
name: name,
type: :theme_upload_var,
upload_id: upload.id,
)
end
end
# TODO (martin): Until we are ready to roll this out more
# widely, let's avoid doing this work for most sites.
if SiteSetting.theme_download_screenshots
theme_info["screenshots"] = Array.wrap(theme_info["screenshots"]).take(2)
theme_info["screenshots"].each_with_index do |relative_path, idx|
if path = importer.real_path(relative_path)
if !THEME_SCREENSHOT_ALLOWED_FILE_TYPES.include?(File.extname(path))
raise ImportError,
I18n.t(
"themes.import_error.screenshot_invalid_type",
file_name: File.basename(path),
accepted_formats: THEME_SCREENSHOT_ALLOWED_FILE_TYPES.join(","),
)
end
if File.size(path) > MAX_THEME_SCREENSHOT_FILE_SIZE
raise ImportError,
I18n.t(
"themes.import_error.screenshot_invalid_size",
file_name: File.basename(path),
max_size:
ActiveSupport::NumberHelper.number_to_human_size(
MAX_THEME_SCREENSHOT_FILE_SIZE,
),
)
end
screenshot_width, screenshot_height = FastImage.size(path)
if (screenshot_width.nil? || screenshot_height.nil?) ||
screenshot_width > MAX_THEME_SCREENSHOT_DIMENSIONS[0] ||
screenshot_height > MAX_THEME_SCREENSHOT_DIMENSIONS[1]
raise ImportError,
I18n.t(
"themes.import_error.screenshot_invalid_dimensions",
file_name: File.basename(path),
width: screenshot_width.to_i,
height: screenshot_height.to_i,
max_width: MAX_THEME_SCREENSHOT_DIMENSIONS[0],
max_height: MAX_THEME_SCREENSHOT_DIMENSIONS[1],
)
end
upload = create_upload(path, relative_path)
if !upload.errors.empty?
raise ImportError,
I18n.t(
"themes.import_error.screenshot",
errors: upload.errors.full_messages.join(","),
)
end
updated_fields << theme.set_field(
target: :common,
name: "screenshot_#{idx + 1}",
type: :theme_screenshot_upload_var,
upload_id: upload.id,
)
end
end
end
# Update all theme attributes if this is just a placeholder
if self.remote_url.present? && !self.local_version && !self.commits_behind
self.theme.name = theme_info["name"]
self.theme.component = [true, "true"].include?(theme_info["component"])
self.theme.child_components = theme_info["components"].presence || []
end
METADATA_PROPERTIES.each do |property|
self.public_send(:"#{property}=", theme_info[property.to_s])
end
if !self.valid?
raise ImportError,
I18n.t(
"themes.import_error.about_json_values",
errors: self.errors.full_messages.join(","),
)
end
ThemeModifierSet.modifiers.keys.each do |modifier_name|
value = theme_info.dig("modifiers", modifier_name.to_s)
if Hash === value && value["type"] == "setting"
theme.theme_modifier_set.add_theme_setting_modifier(modifier_name, value["value"])
else
theme.theme_modifier_set.public_send(:"#{modifier_name}=", value)
end
end
if !theme.theme_modifier_set.valid?
raise ImportError,
I18n.t(
"themes.import_error.modifier_values",
errors: theme.theme_modifier_set.errors.full_messages.join(","),
)
end
all_files = importer.all_files
if all_files.size > MAX_THEME_FILE_COUNT
raise ImportError,
I18n.t(
"themes.import_error.too_many_files",
count: all_files.size,
limit: MAX_THEME_FILE_COUNT,
)
end
theme_size = 0
all_files.each do |filename|
next unless opts = ThemeField.opts_from_file_path(filename)
file_size = importer.file_size(filename)
if file_size > MAX_ASSET_FILE_SIZE
raise ImportError,
I18n.t(
"themes.import_error.asset_too_big",
filename: filename,
limit: ActiveSupport::NumberHelper.number_to_human_size(MAX_ASSET_FILE_SIZE),
)
end
theme_size += file_size
if theme_size > MAX_THEME_SIZE
raise ImportError,
I18n.t(
"themes.import_error.theme_too_big",
limit: ActiveSupport::NumberHelper.number_to_human_size(MAX_THEME_SIZE),
)
end
value = importer[filename]
updated_fields << theme.set_field(**opts.merge(value: value))
end
if !skip_update
self.remote_updated_at = Time.zone.now
self.remote_version = importer.version
self.local_version = importer.version
self.commits_behind = 0
end
transaction_block = -> do
# Destroy fields that no longer exist in the remote theme
field_ids_to_destroy = theme.theme_fields.pluck(:id) - updated_fields.map { |tf| tf&.id }
ThemeField.where(id: field_ids_to_destroy).destroy_all
update_theme_color_schemes(theme, theme_info["color_schemes"]) unless theme.component
self.save!
if raise_if_theme_save_fails
theme.save!
else
raise ActiveRecord::Rollback if !theme.save
end
theme.migrate_settings(start_transaction: false) if run_migrations
end
if already_in_transaction
transaction_block.call
else
self.transaction(&transaction_block)
end
theme.theme_modifier_set.save! if theme.theme_modifier_set.refresh_theme_setting_modifiers
self
ensure
begin
importer.cleanup! if cleanup
rescue => e
Rails.logger.warn("Failed cleanup remote git #{e}")
end
end
def normalize_override(hex)
return unless hex
override = hex.downcase
override = nil if override !~ /\A[0-9a-f]{6}\z/
override
end
def update_theme_color_schemes(theme, schemes)
missing_scheme_names = Hash[*theme.color_schemes.pluck(:name, :id).flatten]
ordered_schemes = []
schemes&.each do |name, colors|
missing_scheme_names.delete(name)
scheme = theme.color_schemes.find_by(name: name) || theme.color_schemes.build(name: name)
# Update main colors
ColorScheme.base.colors_hashes.each do |color|
override = normalize_override(colors[color[:name]])
color_scheme_color =
scheme.color_scheme_colors.to_a.find { |c| c.name == color[:name] } ||
scheme.color_scheme_colors.build(name: color[:name])
color_scheme_color.hex = override || color[:hex]
theme.notify_color_change(color_scheme_color) if color_scheme_color.hex_changed?
end
# Update advanced colors
ColorScheme.color_transformation_variables.each do |variable_name|
override = normalize_override(colors[variable_name])
color_scheme_color = scheme.color_scheme_colors.to_a.find { |c| c.name == variable_name }
if override
color_scheme_color ||= scheme.color_scheme_colors.build(name: variable_name)
color_scheme_color.hex = override
theme.notify_color_change(color_scheme_color) if color_scheme_color.hex_changed?
elsif color_scheme_color # No longer specified in about.json, delete record
scheme.color_scheme_colors.delete(color_scheme_color)
theme.notify_color_change(nil, scheme: scheme)
end
end
ordered_schemes << scheme
end
if missing_scheme_names.length > 0
ColorScheme.where(id: missing_scheme_names.values).delete_all
# we may have stuff pointed at the incorrect scheme?
end
theme.color_scheme = ordered_schemes.first if theme.new_record?
end
def github_diff_link
if github_repo_url.present? && local_version != remote_version
"#{github_repo_url.gsub(/\.git\z/, "")}/compare/#{local_version}...#{remote_version}"
end
end
def github_repo_url
url = remote_url.strip
return url if url.match?(GITHUB_REGEXP)
if url.match?(GITHUB_SSH_REGEXP)
org_repo = url.gsub(GITHUB_SSH_REGEXP, "")
"https://github.com/#{org_repo}"
end
end
def is_git?
remote_url.present?
end
def create_upload(path, relative_path)
new_path = "#{File.dirname(path)}/#{SecureRandom.hex}#{File.extname(path)}"
# OptimizedImage has strict file name restrictions, so rename temporarily
File.rename(path, new_path)
UploadCreator.new(
File.open(new_path),
File.basename(relative_path),
for_theme: true,
).create_for(theme.user_id)
end
end
# == Schema Information
#
# Table name: remote_themes
#
# id :integer not null, primary key
# remote_url :string not null
# remote_version :string
# local_version :string
# about_url :string
# license_url :string
# commits_behind :integer
# remote_updated_at :datetime
# created_at :datetime not null
# updated_at :datetime not null
# private_key :text
# branch :string
# last_error_text :text
# authors :string
# theme_version :string
# minimum_discourse_version :string
# maximum_discourse_version :string
#