[rubygems/rubygems] Use file in XDG_STATE_HOME directory to store last update check timestamp.

https://github.com/rubygems/rubygems/commit/0fbc4ace8a

1 files changed, 27 insertions, 6 deletions

diff --git a/lib/rubygems/config_file.rb b/lib/rubygems/config_file.rb
index b18f4115cc..f2abc7f2af 100644
--- a/lib/rubygems/config_file.rb
+++ b/lib/rubygems/config_file.rb
@@ -371,16 +371,18 @@ if you believe they were disclosed to a third party.
     @backtrace || $DEBUG
   end
 
-  # Check config file is writable. Creates empty file if not present to ensure we can write to it.
-  def config_file_writable?
-    if File.exist?(config_file_name)
-      File.writable?(config_file_name)
+  # Check state file is writable. Creates empty file if not present to ensure we can write to it.
+  def state_file_writable?
+    if File.exist?(state_file_name)
+      File.writable?(state_file_name)
     else
       require "fileutils"
-      FileUtils.mkdir_p File.dirname(config_file_name)
-      File.open(config_file_name, "w") {}
+      FileUtils.mkdir_p File.dirname(state_file_name)
+      File.open(state_file_name, "w") {}
       true
     end
+  rescue Errno::EACCES
+    false
   end
 
   # The name of the configuration file.
@@ -388,6 +390,25 @@ if you believe they were disclosed to a third party.
     @config_file_name || Gem.config_file
   end
 
+  # The name of the state file.
+  def state_file_name
+    @state_file_name || Gem.state_file
+  end
+
+  # Reads time of last update check from state file
+  def last_update_check
+    if File.readable?(state_file_name)
+      File.read(state_file_name).to_i
+    else
+      0
+    end
+  end
+
+  # Writes time of last update check to state file
+  def last_update_check=(timestamp)
+    File.write(state_file_name, timestamp.to_s) if state_file_writable?
+  end
+
   # Delegates to @hash
   def each(&block)
     hash = @hash.dup