Add autoupdater

2 files changed, 183 insertions, 0 deletions

diff --git a/lib/download.rb b/lib/download.rb
new file mode 100644
index 0000000..49bb0c0
--- /dev/null
+++ b/lib/download.rb
@@ -0,0 +1,145 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+# frozen_string_literal: true
+
+require_relative 'package'
+require 'net/http'
+
+MY_BRANCH = 'user/belka/updates'
+
+def write_download(target, response)
+  checksum = Digest::MD5.new
+
+  File.open target, 'w' do |io|
+    response.read_body do |chunk|
+      print '.'
+      io << chunk
+      checksum << chunk
+    end
+  end
+
+  checksum
+end
+
+def redirect_download(location, target)
+  puts 'redirecting...'
+  new_location = URI location
+
+  download new_location, target
+end
+
+def start_download(uri, target, http)
+  request = Net::HTTP::Get.new uri
+
+  http.request request do |response|
+    case response
+    when Net::HTTPRedirection
+      return redirect_download response['location'], target
+    else
+      return write_download target, response
+    end
+  end
+end
+
+def download(uri, target)
+  print "Downloading #{uri} "
+  checksum = nil
+
+  Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
+    checksum = start_download uri, target, http
+  end
+
+  puts
+  checksum
+end
+
+def hosted_sources(absolute_url)
+  "https://download.dlackware.com/hosted-sources#{absolute_url}"
+end
+
+def remote_file_exists?(url)
+  uri = URI hosted_sources(url)
+
+  request = Net::HTTP.new uri.host, uri.port
+  request.use_ssl = true
+  response = request.request_head uri.path
+
+  response.code.to_i == 200
+end
+
+def upload_command(local_path, remote_path)
+  "scp slackbuilds/#{local_path} "\
+    "caraus.de:/srv/httpd/dlackware/download/hosted-sources#{remote_path}"
+end
+
+def clone_and_archive(repo, name_version, tarball)
+  _, _, version = name_version.rpartition '-'
+
+  rm_rf name_version
+
+  sh "git clone #{repo} #{name_version}"
+  sh "git -C #{name_version} checkout v#{version}"
+  sh "git -C #{name_version} submodule update --init --recursive"
+
+  sh "tar Jcvf slackbuilds/#{tarball} #{name_version}"
+  rm_rf name_version
+end
+
+def clone(repo, tarball)
+  name_version = File.basename tarball, '.tar.xz'
+  remote_path = tarball[tarball.index('/')..-1]
+
+  if remote_file_exists?(remote_path)
+    uri = URI hosted_sources(remote_path)
+
+    return download(uri, "slackbuilds/#{tarball}").hexdigest
+  end
+
+  clone_and_archive repo, name_version, tarball
+
+  sh upload_command(tarball, remote_path)
+
+  Digest::MD5.hexdigest File.read("slackbuilds/#{tarball}")
+end
+
+def download_and_deploy(uri, tarball)
+  remote_path = tarball[tarball.index('/')..-1]
+
+  if remote_file_exists?(remote_path)
+    uri = URI hosted_sources(remote_path)
+    return download(uri, "slackbuilds/#{tarball}").hexdigest
+  end
+
+  checksum = download uri, "slackbuilds/#{tarball}"
+  sh upload_command(tarball, remote_path)
+  checksum.hexdigest
+end
+
+def write_info(package, download:, md5sum:)
+  File.open "slackbuilds/#{package.path}/#{package.name}.info", 'w' do |file|
+    file.write info_template(package, download, md5sum)
+  end
+end
+
+def update_slackbuild_version(package_path, version)
+  name = package_path.split('/').last
+  slackbuild_filename = "slackbuilds/#{package_path}/#{name}.SlackBuild"
+  slackbuild_contents = File.read(slackbuild_filename)
+    .gsub(/^VERSION=\${VERSION:-.+/, "VERSION=${VERSION:-#{version}}")
+
+  File.open(slackbuild_filename, 'w') { |file| file.puts slackbuild_contents }
+end
+
+def commit(package_path, version)
+  message = "#{package_path}: Updated for version #{version}"
+
+  unless system('git', '-C', 'slackbuilds', 'checkout', MY_BRANCH,
+    err: '/dev/null')
+    sh "git -C slackbuilds checkout -b #{MY_BRANCH} master"
+  end
+  sh "git -C slackbuilds add #{package_path}"
+  sh %(git -C slackbuilds commit -m "#{message}")
+  # sh "git -C slackbuilds push origin #{branch}"
+end
diff --git a/lib/package.rb b/lib/package.rb
new file mode 100644
index 0000000..7bc81ec
--- /dev/null
+++ b/lib/package.rb
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+# frozen_string_literal: true
+
+class Package
+  attr_reader :path
+  attr_reader :version
+  attr_reader :homepage
+  attr_reader :requires
+
+  def initialize(path, version:, homepage:, requires: [])
+    @path = path
+    @version = version
+    @homepage = homepage
+    @requires = requires
+  end
+
+  def name
+    File.basename @path
+  end
+end
+
+def info_template(package, download, md5sum)
+  <<~INFO_FILE
+    PRGNAM="#{package.name}"
+    VERSION="#{package.version}"
+    HOMEPAGE="#{package.homepage}"
+    DOWNLOAD="#{download * " \\\n          "}"
+    MD5SUM="#{md5sum * " \\\n        "}"
+    DOWNLOAD_x86_64=""
+    MD5SUM_x86_64=""
+    REQUIRES="#{package.requires * ' '}"
+    MAINTAINER="Eugene Wissner"
+    EMAIL="belka@caraus.de"
+  INFO_FILE
+end