Simple Ruby script for resetting JIRA user passwords

jira-pw-reset.rb

#!/usr/bin/env ruby

require 'optparse'
require 'securerandom'
require 'json'
require 'net/http'

options = {}

OptionParser.new do |parser|
  parser.banner = 'Usage: jira-pw-reset.rb [options]'

  parser.on('-h', '--help', 'Show this help message') do ||
    puts parser
  end

  parser.on('--url URL', 'JIRA base URL') do |v| options[:jira_url] = v end
  parser.on('--username USERNAME', 'JIRA username (with administrator permissions)') do |v| options[:jira_username] = v end
  parser.on('--password PASSWORD', 'JIRA password') do |v| options[:jira_password] = v end
  parser.on('--users USER1,USER2,...', 'Comma seperated list of usernames to change the password for') do |v| options[:usernames] = v end

  parser.on()
end.parse!

def ask_if_missing(option, fancy_name)
  if !option
    puts "#{fancy_name}:"
    option = gets.chomp

    if option.empty?
      abort("#{fancy_name} is required")
    end
  end

  option
end

jira_url = ask_if_missing options[:jira_url], 'JIRA base URL'
jira_username = ask_if_missing options[:jira_username], 'JIRA username'
jira_password = ask_if_missing options[:jira_password], 'JIRA password'
usernames = ask_if_missing options[:usernames], 'Usernames'

usernames = usernames.split(',').uniq.reject(&:empty?)
usernames.each { |username|
  random_password = SecureRandom.hex
  request_body = {:password => random_password }

  puts "Resetting password for #{username} to: #{random_password}"

  uri = URI.parse("#{jira_url}/rest/api/2/user/password?username=#{username}")
  req = Net::HTTP::Put.new(uri)
  req['Content-Type'] = 'application/json'
  req.basic_auth jira_username, jira_password
  req.body = JSON.generate(request_body)

  res = Net::HTTP.start(uri.hostname, uri.port, :use_ssl => true) {|http|
    http.request(req)
  }

  if res.code != "204"
    puts "- Could not change password for user #{username}"
    puts "- Got the following response code from server: #{res.code} (#{res.message})"
  end
}