post-receive.rb

#!/usr/bin/env ruby
# Config
# ------
# hooks.mailinglist
#   This is the list that all pushes will go to; leave it blank to not send
#   emails for every ref update.
# hooks.emailprefix
#   All emails have their subjects prefixed with this prefix, or "[SCM]"
#   if emailprefix is unset, to aid filtering

require 'rubygems'
require 'git'
require 'net/smtp'
require 'mailfactory'

class CommitHook
  attr_accessor :git, :options

  def initialize(oldrev, newrev, refname)
    @git = Git.bare("/srv/git/puppet.git")
    @options = {
      :oldrev => oldrev,
      :newrev => newrev,
      :refname => refname,
      :description => `sed -ne '1p' /srv/git/puppet.git/description`.strip,
    }

    @git.config.map do |key,value|
      @options[key.gsub(/\./, '_').to_sym] = value
    end

    @options[:hooks_emailprefix] = "[SCM]" if @options[:hooks_emailprefix].nil?

  end
  def send
    mail = MailFactory.new()
    mail.to = @options[:hooks_mailinglist]
    mail.from = "git@puppet.maxnet.net.nz"
    mail.subject = "#{@options[:hooks_emailprefix]}: #{@options[:description]} updated: #{options[:newrev]}".strip

    body = "<font face='tahoma' size='8px'><h3>Repository #{options[:description]} has been updated</h3>"

    unless @options[:oldrev] =~ /00.*/ or @options[:newrev] =~ /00.*/
      @git.log.between(@options[:oldrev], @options[:newrev]).each do |commit|
        body << "commit #{commit.sha}<br>"
        body << "Author: #{commit.author.name} <#{commit.author.email}><br>"
        body << "Date: #{commit.author.date}<br><br>"
        body << "<pre>#{commit.message}</pre><br>"
        @git.diff(commit.parent.sha, commit.sha).each do |diff|
          body << "<pre>#{diff.patch}</pre><br>"
        end
        body << "<br><br>"
      end
    else
      if @options[:oldrev] =~ /00.*/
        puts "skipping post-receive mail for this creation"
      elsif @options[:newrev] =~ /00.*/
        puts "skipping post-receive mail for this deletion"
      end
    end

    body << "</font>"

    mail.html = body

    Net::SMTP.start("localhost", 25, "puppet.maxnet.net.nz") do |smtp|
      $stdout << "sending commithook email to '#{mail.to.to_s}'.. "
      smtp.send_message(mail.to_s, "git", mail.to.to_s)
      $stdout.puts "done.\n"
    end
  end
end

STDIN.readlines.each do |line|
  $stdout.puts "\npost-receive active.. preparing email"
  mail = CommitHook.new(line.split[0], line.split[1], line.split[2])
  mail.send
end