#!/usr/bin/env ruby

# Convert Keyring for Palm OS XML file to KeePass 1.x XML.

$VERBOSE = true

groups = {}

require 'rubygems'
require 'xml/libxml'

input_file = ARGV[0]

if !input_file
  puts "usage: kr2kp <xmlfile>"
  puts " where <xmlfile> is the GNU Keyring database in XML format"
  exit 1
end

# Open the Keyring XML file.
io = File.open(input_file, 'rb')
parser = XML::Parser.io(io)
doc = parser.parse
root = doc.root

# Collect the Keyring entries into groups according to category.
root.find('pwentry').each do |node|
  title = node.find('title')[0].content
  category = node.find('category')[0].content
  username_node = node.find('username')[0]
  username = username_node ? username_node.content : ""
  password = node.find('password')[0].content
  lastmodtime = node.find('lastmodtime')[0].content
  notes = node.find('notes')[0].content
  record = {
     :title       => title,
     :username    => username,
     :password    => password,
     :notes       => notes,
     :lastmodtime => lastmodtime
  }
  groups[category] ||= []
  groups[category] << record
end

io.close

# Create the KeePass XML file.
doc = XML::Document.new()
doc.root = XML::Node.new('database')
root = doc.root

groups.each_key do |key|
   # Create a new group.
   root << group = XML::Node.new('group')
   group << group_title = XML::Node.new('title')
   group_title << key

   groups[key].each do |record|
      # Create a new entry.
      group << entry = XML::Node.new('entry')

      # Title
      entry << title = XML::Node.new('title')
      title << record[:title]

      # Username
      entry << username = XML::Node.new('username')
      username << record[:username]

      # Password
      entry << password = XML::Node.new('password')
      password << record[:password]

      # Comment
      entry << comment = XML::Node.new('comment')
      comment << record[:notes]

      # Keyring only records the last modification time,
      # it's a date only, with no time of day.  So
      # use midnight as the time of day.
      modtime = record[:lastmodtime] + "T00:00:00"

      # Creation time -- same as last modification time.
      entry << creation = XML::Node.new('creation')
      creation << modtime

      # Last access time -- same as last modification time.
      entry << lastaccess = XML::Node.new('lastaccess')
      lastaccess << modtime

      # Last modification time
      entry << lastmod = XML::Node.new('lastmod')
      lastmod << modtime

      # Expiration
      entry << expire = XML::Node.new('expire')
      expire << 'Never'
   end
end

# Write the KeePass XML to stdout.
string = doc.to_s(:indent => true, :encoding => XML::Encoding::UTF_8)
puts string