sms

#!/usr/bin/env ruby
# frozen_string_literal: true

# sms.rb
# Author: William Woodruff
# ------------------------
# Sends SMS/MMS messages using SMTP gateways provided by cellular companies.
# Supports most large (US) cellular providers, reads messages from stdin.
# Reads SMTP credentials and information from ~/.smsrc.
# ------------------------
# This code is licensed by William Woodruff under the MIT License.
# http://opensource.org/licenses/MIT

require "yaml"

begin
  require "mail"
rescue LoadError
  abort("Fatal: The 'mail' gem is required.")
end

smsrc = File.expand_path("~/.smsrc")
abort("Fatal: No ~/.smsrc found.") unless File.file?(smsrc)

conf = YAML.load_file(smsrc)
opts = {
  address: conf["smtp"],
  port: 587,
  user_name: conf["email"],
  password: conf["password"],
  authentication: conf["auth"],
  enable_starttls_auto: true,
}

# prefer mms where available
providers = [
  "%<number>s@email.uscc.net",
  "%<number>s@message.alltel.com",
  "%<number>s@message.ting.com",
  "%<number>s@messaging.sprintpcs.com",
  "%<number>s@mobile.celloneusa.com",
  "%<number>s@msg.telus.com",
  "%<number>s@paging.acswireless.com",
  "%<number>s@pcs.rogers.com",
  "%<number>s@qwestmp.com",
  "%<number>s@tmomail.net",
  "%<number>s@mms.att.net",
  "%<number>s@vzwpix.com",
  "%<number>s@text.republicwireless.com",
  "%<number>s@mms.cricketwireless.net",
  "%<number>s@vmobl.com",
]

number = ARGV.shift

abort("Usage: #{$PROGRAM_NAME} <phone number>") if number.nil? || number !~ /\d{9,10}/

Mail.eager_autoload!

Mail.defaults do
  delivery_method :smtp, opts
end

message = STDIN.read

addresses = providers.map { |p| p % { number: number } }
threads = []

addresses.each do |address|
  threads << Thread.new do
    Mail.new do
      from conf["email"]
      to address
      body message
    end.deliver!
  end
end

threads.each(&:join)