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require 'openssl'
require 'ffi'
# Adapted from Puppet, Copyright (c) Puppet Labs Inc,
# licensed under the Apache License, Version 2.0.
#
# https://github.com/puppetlabs/puppet/blob/bbe30e0a/lib/puppet/util/windows/root_certs.rb
# Represents a collection of trusted root certificates.
#
# @api public
class RestClient::Windows::RootCerts
include Enumerable
extend FFI::Library
typedef :ulong, :dword
typedef :uintptr_t, :handle
def initialize(roots)
@roots = roots
end
# Enumerates each root certificate.
# @yieldparam cert [OpenSSL::X509::Certificate] each root certificate
# @api public
def each
@roots.each {|cert| yield cert}
end
# Returns a new instance.
# @return [RestClient::Windows::RootCerts] object constructed from current root certificates
def self.instance
new(self.load_certs)
end
# Returns an array of root certificates.
#
# @return [Array<[OpenSSL::X509::Certificate]>] an array of root certificates
# @api private
def self.load_certs
certs = []
# This is based on a patch submitted to openssl:
# http://www.mail-archive.com/openssl-dev@openssl.org/msg26958.html
ptr = FFI::Pointer::NULL
store = CertOpenSystemStoreA(nil, "ROOT")
begin
while (ptr = CertEnumCertificatesInStore(store, ptr)) and not ptr.null?
context = CERT_CONTEXT.new(ptr)
cert_buf = context[:pbCertEncoded].read_bytes(context[:cbCertEncoded])
begin
certs << OpenSSL::X509::Certificate.new(cert_buf)
rescue => detail
warn("Failed to import root certificate: #{detail.inspect}")
end
end
ensure
CertCloseStore(store, 0)
end
certs
end
private
# typedef ULONG_PTR HCRYPTPROV_LEGACY;
# typedef void *HCERTSTORE;
class CERT_CONTEXT < FFI::Struct
layout(
:dwCertEncodingType, :dword,
:pbCertEncoded, :pointer,
:cbCertEncoded, :dword,
:pCertInfo, :pointer,
:hCertStore, :handle
)
end
# HCERTSTORE
# WINAPI
# CertOpenSystemStoreA(
# __in_opt HCRYPTPROV_LEGACY hProv,
# __in LPCSTR szSubsystemProtocol
# );
ffi_lib :crypt32
attach_function :CertOpenSystemStoreA, [:pointer, :string], :handle
# PCCERT_CONTEXT
# WINAPI
# CertEnumCertificatesInStore(
# __in HCERTSTORE hCertStore,
# __in_opt PCCERT_CONTEXT pPrevCertContext
# );
ffi_lib :crypt32
attach_function :CertEnumCertificatesInStore, [:handle, :pointer], :pointer
# BOOL
# WINAPI
# CertCloseStore(
# __in_opt HCERTSTORE hCertStore,
# __in DWORD dwFlags
# );
ffi_lib :crypt32
attach_function :CertCloseStore, [:handle, :dword], :bool
end