Class: Chef::Certificate

Inherits:
Object show all
Defined in:
lib/chef/certificate.rb

Class Method Summary collapse

Class Method Details

.gen_keypair(common_name, subject_alternative_name = nil) ⇒ Object

Creates a new key pair, and signs them with the signing certificate and key generated from generate_signing_ca above.

Parameters:

  • The (String) —

    common name for the key pair.

  • The (Optional String) —

    subject alternative name.

Returns:



88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
 
# File 'lib/chef/certificate.rb', line 88

def gen_keypair(common_name, subject_alternative_name = nil)

  Chef::Log.info("Creating new key pair for #{common_name}")

  # generate client keypair
  client_keypair = OpenSSL::PKey::RSA.generate(2048)

  client_cert = OpenSSL::X509::Certificate.new

  ca_cert = OpenSSL::X509::Certificate.new(File.read(Chef::Config[:signing_ca_cert]))

  info = [
    ["C", Chef::Config[:signing_ca_country]], 
    ["ST", Chef::Config[:signing_ca_state]], 
    ["L", Chef::Config[:signing_ca_location]], 
    ["O", Chef::Config[:signing_ca_org]],
    ["OU", "Certificate Service"], 
    ["CN", common_name ]
  ]

  client_cert.subject = OpenSSL::X509::Name.new(info)
  client_cert.issuer = ca_cert.subject
  client_cert.not_before = Time.now
  client_cert.not_after = Time.now + 10 * 365 * 24 * 60 * 60 # 10 years
  client_cert.public_key = client_keypair.public_key
  client_cert.serial = 1
  client_cert.version = 3

  ef = OpenSSL::X509::ExtensionFactory.new
  ef.subject_certificate = client_cert
  ef.issuer_certificate = ca_cert

  client_cert.extensions = [
          ef.create_extension("basicConstraints", "CA:FALSE", true),
          ef.create_extension("subjectKeyIdentifier", "hash")
  ]
  client_cert.add_extension ef.create_extension("subjectAltName", subject_alternative_name) if subject_alternative_name

  client_cert.sign(OpenSSL::PKey::RSA.new(File.read(Chef::Config[:signing_ca_key])), OpenSSL::Digest::SHA1.new)

  return client_cert.public_key, client_keypair
end

.gen_validation_key(name = , key_file = , admin = false) ⇒ Object 



131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
 
# File 'lib/chef/certificate.rb', line 131

def gen_validation_key(name=Chef::Config[:validation_client_name], key_file=Chef::Config[:validation_key], admin=false)
  # Create the validation key
  api_client = Chef::ApiClient.new
  api_client.name(name)
  api_client.admin(admin)
  
  begin
    # If both the couch record and file exist, don't do anything. Otherwise,
    # re-generate the validation key.
    Chef::ApiClient.cdb_load(name)
    
    # The couch document was loaded successfully if we got to here; if we
    # can't also load the file on the filesystem, we'll regenerate it all.
    File.open(key_file, "r") do |file|
    end
  rescue Chef::Exceptions::CouchDBNotFound
    create_validation_key(api_client, key_file)
  rescue
    if $!.class.name =~ /Errno::/
      Chef::Log.error("Error opening validation key: #{$!} -- destroying and regenerating")
      begin
        api_client.cdb_destroy
      rescue Bunny::ServerDownError => e
        # create_validation_key is gonna fail anyway, so let's just bail out.
        Chef::Log.fatal("Could not de-index (to rabbitmq) previous validation key - rabbitmq is down! Start rabbitmq then restart chef-server to re-generate it")
        raise
      end
      
      create_validation_key(api_client, key_file)
    else
      raise
    end
  end
end

.generate_signing_ca ⇒ Object

Generates a new CA Certificate and Key, and writes them out to Chef::Config and Chef::Config.



32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/chef/certificate.rb', line 32

def generate_signing_ca
  ca_cert_file = Chef::Config[:signing_ca_cert]
  ca_keypair_file = Chef::Config[:signing_ca_key] 

  unless File.exists?(ca_cert_file) && File.exists?(ca_keypair_file)
    Chef::Log.info("Creating new signing certificate")
  
    [ ca_cert_file, ca_keypair_file ].each do |f|
      ca_basedir = File.dirname(f)
      FileUtils.mkdir_p ca_basedir
    end

    keypair = OpenSSL::PKey::RSA.generate(1024)

    ca_cert = OpenSSL::X509::Certificate.new
    ca_cert.version = 3
    ca_cert.serial = 1
    info = [
      ["C", Chef::Config[:signing_ca_country]], 
      ["ST", Chef::Config[:signing_ca_state]], 
      ["L", Chef::Config[:signing_ca_location]], 
      ["O", Chef::Config[:signing_ca_org]],
      ["OU", "Certificate Service"], 
      ["CN", "#{Chef::Config[:signing_ca_domain]}/emailAddress=#{Chef::Config[:signing_ca_email]}"]
    ]
    ca_cert.subject = ca_cert.issuer = OpenSSL::X509::Name.new(info)
    ca_cert.not_before = Time.now
    ca_cert.not_after = Time.now + 10 * 365 * 24 * 60 * 60 # 10 years
    ca_cert.public_key = keypair.public_key

    ef = OpenSSL::X509::ExtensionFactory.new
    ef.subject_certificate = ca_cert
    ef.issuer_certificate = ca_cert
    ca_cert.extensions = [
            ef.create_extension("basicConstraints", "CA:TRUE", true),
            ef.create_extension("subjectKeyIdentifier", "hash"),
            ef.create_extension("keyUsage", "cRLSign,keyCertSign", true),
    ]
    ca_cert.add_extension ef.create_extension("authorityKeyIdentifier", "keyid:always,issuer:always")
    ca_cert.sign keypair, OpenSSL::Digest::SHA1.new

    File.open(ca_cert_file, "w") { |f| f.write ca_cert.to_pem }
    File.open(ca_keypair_file, File::WRONLY|File::EXCL|File::CREAT, 0600) { |f| f.write keypair.to_pem }
    if (Chef::Config[:signing_ca_user] && Chef::Config[:signing_ca_group])
      FileUtils.chown(Chef::Config[:signing_ca_user], Chef::Config[:signing_ca_group], ca_keypair_file)
    end
  end
  self
end