Add Mail card

bin/malpd

@@ -4,6 +4,7 @@ require "socket"
 require "fileutils"
 require "json"
 require "shellwords"
+require "etc"
 
 SOCKET_PATH = "/run/malpd/malpd.sock"
 
@@ -212,6 +213,33 @@ def read_server_info
   info
 end
 
+def read_mail
+  users = []
+
+  ["root", "josh"].each do |user|
+    begin
+      home = Etc.getpwnam(user).dir
+    rescue ArgumentError
+      next
+    end
+
+    count = 0
+    mbox = ["/var/mail/#{user}", "/var/spool/mail/#{user}"].find { |p| File.exist?(p) }
+    if mbox
+      content = File.read(mbox) rescue ""
+      count = content.scan(/^From /).size
+    end
+
+    users << {
+      "user"        => user,
+      "count"       => count,
+      "dead_letter" => File.exist?(File.join(home, "dead.letter"))
+    }
+  end
+
+  { "type" => "mail", "users" => users }
+end
+
 def read_ups
   out = `apcaccess 2>/dev/null`
   return nil unless $?.success? && !out.empty?
@@ -279,6 +307,7 @@ def handle_info(conn)
   info.concat(read_virtual_machines)
 
   info << read_server_info
+  info << read_mail
 
   if (ups = read_ups)
     info << ups