Support webex updates

Rakefile

@@ -6,6 +6,7 @@
 
 require 'digest/md5'
 require 'net/http'
+require 'open3'
 require_relative 'config/config'
 require_relative 'lib/package'
 require_relative 'lib/download'
@@ -105,3 +106,24 @@ task :ioncube do
   update_slackbuild_version 'development/ioncube-loader', package.version
   commit 'development/ioncube-loader', package.version
 end
+
+task :webex do
+  tarball = 'slackbuilds/network/webex/Webex.deb'
+  uri = 'https://binaries.webex.com/WebexDesktop-Ubuntu-Official-Package/Webex.deb'
+  checksum = download URI(uri), tarball
+
+  last_stdout, = Open3.pipeline_r ['ar', 'p', tarball, 'control.tar.gz'], ['tar', 'zxO', './control']
+  version = last_stdout.read.lines
+    .find { |line| line.start_with? 'Version: ' }
+    .split.last
+
+  package = Package.new 'network/webex',
+    version: version,
+    homepage: 'https://www.webex.com'
+
+  write_info package,
+    downloads: [Download.new(uri, checksum, is64: true)]
+
+  update_slackbuild_version 'network/webex', package.version
+  commit 'network/webex', package.version
+end