#
# Cookbook Name:: freeipa
# Recipe:: server
#
# Copyright 2011, afistfulofservers
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

include_recipe 'chef-vault'

node.normal["freeipa"]["server"] = true

# become aware of clients and servers
freeipa_servers = search(:node, "freeipa_server:true")
freeipa_clients = search(:node, "freeipa_client:true")

# gather data bag secrets
#secret = Chef::EncryptedDataBagItem.load_secret("/home/psi-jack/.chef/encrypted_data_bag_secret")
#passwords = Chef::EncryptedDataBagItem.load("secrets", "passwords", secret)
passwords = chef_vault_item("freeipa", 'passwords')
#ldap_server_admin_pwd = data_bag_item('secrets','ldap_server_admin_pwd')['value']
#kdc_database_master_key = data_bag_item('secrets','kdc_database_master_key')['value']
#ipa_user_pwd = data_bag_item('secrets','ipa_user_pwd')['value']

# packages
#package "dbus"
#package "oddjob"
#package "ipa-client"
#package "ipa-server"
#package "rsync"

package 'ipa-server' do
  case node["platform"]
  when 'redhat', 'centos'
    package_name 'ipa-server'
  end
  action	:install
end

##### Security considerations
# All FreeIPA server hosts need to be able to ssh to each other as root to copy replication configs
# That kind of sucks, but what are the real consequences?
# Since they are replicants of each other, this can be justified, since the data is already compromised.
# Can selinux help mitigate this?
#include_recipe "ohai"
#include_recipe "sshroot2rootssh" 

##### Replication
# We're going to have to 
# a) detect any new freeipa_servers
# b) generate ipa-replica-prepare output for them
# c) copy the configs to them

### Behavor
# First node sets special attribute "master"
# First node configures itself with newly generated crypto

# Subsequent nodes comes up
# Subsequent nodes try to to scp their fqdn's configuration from master
# Subsequent nodes negotiate for master

# negotiate for master
freeipa_masters = search(:node, "freeipa_master:true")
if freeipa_masters.empty? then
  ##### Do master stuff

  # write better tests to see if freeipa is already set up.
  ## Bootstrap FreeIPA
  execute "initializing freeipa-server" do
    not_if	{ File.exist?('/var/liv/ipa/sysrestore/sysrestore.state') }
    cmd =	"ipa-server-install"
    cmd +=	" --hostname " + node["fqdn"]
    #cmd +=	" -u " + "ipaadmin"
    cmd +=	" -r " + node["domain"].upcase
    cmd +=	" -n " + node["domain"]
    cmd +=	" -p " + passwords['ldap_server_admin_pwd']
    #cmd +=	" -P " + passwords['kdc_database_master_key']
    cmd +=	" -a " + passwords['ipa_user_pwd']
    cmd +=	" -N "
    cmd +=	" -U "
    cmd +=	" --no-host-dns --mkhomedir"
    command 	cmd
    #notifies :start, "service[dirsrv]"
  end

  # Compare list of freeipa_servers with contents of /var/lib/ipa/
  #configured_replicants =`ipa-replica-manage -p #{ldap_server_admin_pwd} -H #{node[:fqdn]} list`.split
  #configured_replicants = `ipa-replica-manage -p #{passwords['ldap_server_admin_pwd']} -H #{node[:fqdn]} list`.split
  #configured_replicants.each { |r| puts "DEBUG: configured_replicant: #{r}" }

  #freeipa_server_fqdns  = Array.new
  #freeipa_servers.each { |n|  freeipa_server_fqdns << n[:fqdn] }
  #freeipa_server_fqdns.compact!

  #freeipa_server_fqdns.each do |f|
  #  unless node[:fqdn] == f then
  #    unless configured_replicants.include?( f ) then
  #      execute "generating replica config for #{f}" do
  #        not_if "ls /var/lib/ipa/replica-info-#{f}.gpg"
  #        command "ipa-replica-prepare -p #{passwords['ldap_server_admin_pwd']} #{f}"
  #      end
  #    end
  #  end
  #end
  
  directory "/root/.ssh" do
    owner	"root"
    group	"root"
    mode	"0700"
    action	:create
  end

  file "/root/.ssh/id_rsa" do
    content	passwords["ssh-pvt"]
    owner	"root"
    group	"root"
    mode	"0600"
  end

  file "/root/.ssh/id_rsa.pub" do
    content	passwords["ssh-pub"]
    owner	"root"
    group	"root"
    mode	"0600"
  end

  ruby_block "add public key to authorized_keys" do
    block do
      file = Chef::Util::FileEdit.new("/root/.ssh/authorized_keys")
      file.insert_line_if_no_match(Regexp.new(Regexp.escape(passwords["ssh-pub"].delete("\n"))), passwords["ssh-pub"])
      file.write_file
    end
  end

  node.normal["freeipa"]["master"] = true

#elsif (node[:freeipa][:master].nil? && node[:freeipa][:master] == false) && (node[:freeipa][:replica].nil? && node[:freeipa][:replica] == false) then
#elsif (node["freeipa"]["master"] && node["freeipa"]["master"].respond_to?(:value) && node["freeipa"]["master"] == false) &&
#      (node["freeipa"]["replica"] && node["freeipa"]["replica"].respond_to?(:value) && node["freeipa"]["replica"] == false) then
elsif(node["freeipa"]["master"] != true && node["freeipa"]["replica"] != true) then
  ### Subsequent Replica Nodes 

  # check to see if slave is setup to replicat from master
  #"ipa-replica-manage -p 0123456789 -H authentication-1.dev.us-east-1.aws.afistfulofservers.net list"
  ssh_noauth = "-o StrictHostKeyChecking=yes -o PasswordAuthentication=no"

  execute "prepare replica from master" do
    cmd =	"ssh #{ssh_noauth} root@#{freeipa_masters[0]['fqdn']} ipa-replica-prepare -p #{passwords['ldap_server_admin_pwd']}"
    cmd +=	" " + node["fqdn"]
    command	cmd
    sensitive	true
    not_if	"ssh #{ssh_noauth} root@#{freeipa_masters[0]['fqdn']} test -f /var/lib/ipa/replica-info-#{node['fqdn']}.gpg"
    #notifies :run, 'execute[rsyncing freeipa replication data]', :immediately
  end

  # Check for replication config
  # Attempt to copy config from master.
  # Fail gracefully if not found.
  execute "scping freeipa replication data" do
    #only_if "ipa-replica-manage -p #{passwords['ldap_server_admin_pwd']} -H #{freeipa_masters[0][:fqdn]} list | grep #{node[:fqdn]}"
    only_if	"ssh #{ssh_noauth} root@#{freeipa_masters[0]['fqdn']} test -f /var/lib/ipa/replica-info-#{node['fqdn']}.gpg"
    not_if	{ File.exist?("/var/lib/ipa/replica-info-#{node['fqdn']}.gpg") }
    #cmd = "rsync -a -e \"ssh " + ssh_noauth
    cmd =	"scp " + ssh_noauth
    cmd +=	" root@" + freeipa_masters[0]["fqdn"]
    cmd +=	":/var/lib/ipa/replica-info-#{node['fqdn']}.gpg"
    cmd +=	" /var/lib/ipa/"
    command	cmd
    #notifies	:run, 'execute[joining freeipa cluster]', :immediately
  end

  execute "joining freeipa cluster" do
    not_if	"ipa-replica-manage -p #{passwords['ldap_server_admin_pwd']} -H #{freeipa_masters[0]['fqdn']} list | grep #{node['fqdn']}"
    #only_if "ls /var/lib/ipa/replica-info-#{node[:fqdn]}.gpg"
    only_if	{ File.exist?("/var/lib/ipa/replica-info-#{node['fqdn']}.gpg") }
    cmd =	"ipa-replica-install"
    cmd +=	" -p " + passwords['ldap_server_admin_pwd']
    cmd +=	" --unattended --mkhomedir --skip-conncheck"
    cmd +=	" /var/lib/ipa/replica-info-#{node['fqdn']}.gpg"
    command	cmd
    #sensitive	true
    #action 	:nothing
    notifies	:run, 'execute[copying CA private key]', :immediately
  end

  # copy CA private key 
  # /etc/dirsrv/slapd-DEV-US-EAST-1-AWS-AFISTFULOFSERVERS-NET/pwdfile.txt
  execute "copying CA private key" do 
    only_if	"ipa-replica-manage -p #{passwords['ldap_server_admin_pwd']} -H #{freeipa_masters[0]['fqdn']} list | grep #{node['fqdn']}"
    only_if	{ File.exist?("/etc/dirsrv/slapd-#{node['domain'].upcase}/") }
    not_if	{ File.exist?("/etc/dirsrv/slaved-#{node['domain'].upcase}/cacert.p12") }
    cmd =	"scp " + ssh_noauth
    cmd +=	" root@" + freeipa_masters[0]['fqdn']
    cmd +=	":/etc/dirsrv/slapd-#{node['domain'].upcase}/cacert.p12"
    cmd +=	" /etc/dirsrv/slapd-#{node['domain'].upcase}/"
    command	cmd
    ignore_failure true
    action	:nothing
    notifies	:run, 'ruby_block[set node as replica]', :immediately
  end

  ruby_block "set node as replica" do
    block do
      node.normal["freeipa"]["replica"] = true
    end
    action	:nothing
  end
end


### Admin Password for LWRP
#
file '/etc/ipa/admin.password' do
  content	passwords['ipa_user_pwd']
  owner		'root'
  group		'root'
  mode		'0600'
  sensitive	true
end


### SSH key for IPA server communications
#
directory "/root/.ssh" do
  owner	"root"
  group	"root"
  mode	"0700"
  action	:create
end

file "/root/.ssh/id_rsa" do
  content	passwords["ssh-pvt"]
  owner	"root"
  group	"root"
  mode	"0600"
end

file "/root/.ssh/id_rsa.pub" do
  content	passwords["ssh-pub"]
  owner	"root"
  group	"root"
  mode	"0600"
end

ruby_block "add public key to authorized_keys" do
  block do
    file = Chef::Util::FileEdit.new("/root/.ssh/authorized_keys")
    file.insert_line_if_no_match(Regexp.new(Regexp.escape(passwords["ssh-pub"].delete("\n"))), passwords["ssh-pub"])
    file.write_file
  end
end



##### services
# enable all the default services recommended by the freeipa docs

#service "dirsrv" do
#  service_name	"dirsrv@#{node[:domain].upcase.gsub(".", "-")}"
#  action	[:enable,:start]
#end

#service "krb5kdc" do
#  only_if	service[:dirsrv] => running
#  action	[:enable,:start]
#end

#template "/etc/httpd/conf.d/ipa.conf" do
#  source "ipa.conf.erb"
#  mode 0644
#  notifies :restart, "service[httpd]"
#end

service "httpd" do
  action	[:enable,:start]
end

#service "ipa_kpasswd" do
#  action [:enable,:start]
#end

service "ipa" do
  action	[:enable,:start]
end

#service "messagebus" do
#  action [:enable,:start]
#end
#
#service "oddjobd" do
#  action [:enable,:start]
#end