discourse/lib/theme_store/git_importer.rb
2021-04-14 15:32:47 +01:00

121 lines
3.5 KiB
Ruby

# frozen_string_literal: true
module ThemeStore; end
class ThemeStore::GitImporter
attr_reader :url
def initialize(url, private_key: nil, branch: nil)
@url = url
if @url.start_with?("https://github.com") && !@url.end_with?(".git")
@url = @url.gsub(/\/$/, '')
@url += ".git"
end
@temp_folder = "#{Pathname.new(Dir.tmpdir).realpath}/discourse_theme_#{SecureRandom.hex}"
@private_key = private_key
@branch = branch
end
def import!
if @private_key
import_private!
else
import_public!
end
if version = Discourse.find_compatible_git_resource(@temp_folder)
Discourse::Utils.execute_command(chdir: @temp_folder) do |runner|
begin
runner.exec "git", "cat-file", "-e", version
rescue RuntimeError => e
tracking_ref = runner.exec "git", "rev-parse", "--abbrev-ref", "--symbolic-full-name", "@{upstream}"
remote_name = tracking_ref.split("/", 2)[0]
runner.exec "git", "fetch", "--depth", "1", remote_name, "#{version}:#{version}"
end
runner.exec "git", "reset", "--hard", version
rescue RuntimeError
raise RemoteTheme::ImportError.new(I18n.t("themes.import_error.git_ref_not_found", ref: version))
end
end
end
def commits_since(hash)
commit_hash, commits_behind = nil
Discourse::Utils.execute_command(chdir: @temp_folder) do |runner|
commit_hash = runner.exec("git", "rev-parse", "HEAD").strip
commits_behind = runner.exec("git", "rev-list", "#{hash}..HEAD", "--count").strip rescue -1
end
[commit_hash, commits_behind]
end
def version
Discourse::Utils.execute_command("git", "rev-parse", "HEAD", chdir: @temp_folder).strip
end
def cleanup!
FileUtils.rm_rf(@temp_folder)
end
def real_path(relative)
fullpath = "#{@temp_folder}/#{relative}"
return nil unless File.exist?(fullpath)
# careful to handle symlinks here, don't want to expose random data
fullpath = Pathname.new(fullpath).realpath.to_s
if fullpath && fullpath.start_with?(@temp_folder)
fullpath
else
nil
end
end
def all_files
Dir.glob("**/*", base: @temp_folder).reject { |f| File.directory?(File.join(@temp_folder, f)) }
end
def [](value)
fullpath = real_path(value)
return nil unless fullpath
File.read(fullpath)
end
protected
def import_public!
begin
if @branch.present?
Discourse::Utils.execute_command("git", "clone", "--single-branch", "-b", @branch, @url, @temp_folder)
else
Discourse::Utils.execute_command("git", "clone", @url, @temp_folder)
end
rescue RuntimeError
raise RemoteTheme::ImportError.new(I18n.t("themes.import_error.git"))
end
end
def import_private!
ssh_folder = "#{Pathname.new(Dir.tmpdir).realpath}/discourse_theme_ssh_#{SecureRandom.hex}"
FileUtils.mkdir_p ssh_folder
File.write("#{ssh_folder}/id_rsa", @private_key)
FileUtils.chmod(0600, "#{ssh_folder}/id_rsa")
begin
git_ssh_command = { 'GIT_SSH_COMMAND' => "ssh -i #{ssh_folder}/id_rsa -o StrictHostKeyChecking=no" }
if @branch.present?
Discourse::Utils.execute_command(git_ssh_command, "git", "clone", "--single-branch", "-b", @branch, @url, @temp_folder)
else
Discourse::Utils.execute_command(git_ssh_command, "git", "clone", @url, @temp_folder)
end
rescue RuntimeError => err
raise RemoteTheme::ImportError.new(I18n.t("themes.import_error.git"))
end
ensure
FileUtils.rm_rf ssh_folder
end
end