db_share_link.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'dropbox_sdk'

APP_KEY       = 'h45ed6ebm2zxius'
APP_SECRET    = '14uzh0u8myosnbn'
ACCESS_TYPE   = :dropbox
PASSWD_FILE   = "#{ENV['HOME']}/.dblink"

def run
  @session = DropboxSession.new(APP_KEY, APP_SECRET)
  @session.get_request_token
  login

  ARGV.each do |v|
    if File.exists?(v)
      begin
        l   = File.absolute_path(v).gsub("#{ENV['HOME']}/Dropbox", '')
        url = @client.shares(l)['url']
        $stdout.puts "#{url.to_s}"
      rescue DropboxError => e
        $stderr.puts e
        exit 1
      end
    else
      $stderr.puts "#{v} does not exist"
      exit 1
    end
  end
end

def login
  key, secret = nil, nil
  if File.exist? PASSWD_FILE
    File.open(PASSWD_FILE, 'r') do |f|
      lines = f.readlines
      break unless lines.size == 1
      key, secret = lines.first.chomp.split(':')
    end
  end

  if key && secret
    @session.set_access_token(key, secret)
  end

  if [email protected]?
    authorize_url = @session.get_authorize_url
    `open #{authorize_url}`

    10.times do
      # get the access token from the server. Its then stored in the session.
      sleep 1
      break if check_login
    end
    exit 1 unless check_login
  end

  @client = DropboxClient.new(@session, ACCESS_TYPE)

  File.open(PASSWD_FILE, 'w+') do |f|
    f.puts "#{@session.access_token.key}:#{@session.access_token.secret}"
  end
end

def check_login
  @session.get_access_token
rescue => e
  false
end

run