Class: Puppet::Util::Windows::SID::Principal

Inherits:
Object
  • Object
show all
Extended by:
FFI::Library
Defined in:
lib/puppet/util/windows.rb,
lib/puppet/util/windows/principal.rb

Constant Summary collapse

MAXIMUM_SID_BYTE_LENGTH =

8 + max sub identifiers (15) * 4

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ERROR_INSUFFICIENT_BUFFER = 
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SID_NAME_USE =

msdn.microsoft.com/en-us/library/windows/desktop/aa379601(v=vs.85).aspx

enum(
  :SidTypeUser, 1,
  :SidTypeGroup, 2,
  :SidTypeDomain, 3,
  :SidTypeAlias, 4,
  :SidTypeWellKnownGroup, 5,
  :SidTypeDeletedAccount, 6,
  :SidTypeInvalid, 7,
  :SidTypeUnknown, 8,
  :SidTypeComputer, 9,
  :SidTypeLabel, 10
)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FFI::Library

attach_function_private

Constructor Details

#initialize(account, sid_bytes, sid, domain, account_type) ⇒ Principal

Returns a new instance of Principal.



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# File 'lib/puppet/util/windows/principal.rb', line 8

def initialize(, sid_bytes, sid, domain, )
  # This is only ever called from lookup_account_sid which has already
  # removed the potential for passing in an account like host\user
  @account = 
  @sid_bytes = sid_bytes
  @sid = sid
  @domain = domain
  @account_type = 
  # When domain is available and it is a Domain principal, use domain only
  #   otherwise if domain is available then combine it with parsed account
  #   otherwise when the domain is not available, use the account value directly
  # WinNT naming standard https://msdn.microsoft.com/en-us/library/windows/desktop/aa746534(v=vs.85).aspx
  if (domain && !domain.empty? && @account_type == :SidTypeDomain)
    @domain_account = @domain
  elsif (domain && !domain.empty?)
    @domain_account =  "#{domain}\\#{@account}"
  else
    @domain_account = 
  end
end

Instance Attribute Details

#account ⇒ Object (readonly) 



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# File 'lib/puppet/util/windows/principal.rb', line 6

def 
  @account
end

#account_type ⇒ Object (readonly) 



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# File 'lib/puppet/util/windows/principal.rb', line 6

def 
  @account_type
end

#domain ⇒ Object (readonly) 



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# File 'lib/puppet/util/windows/principal.rb', line 6

def domain
  @domain
end

#domain_account ⇒ Object (readonly) 



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# File 'lib/puppet/util/windows/principal.rb', line 6

def 
  @domain_account
end

#sid ⇒ Object (readonly) 



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# File 'lib/puppet/util/windows/principal.rb', line 6

def sid
  @sid
end

#sid_bytes ⇒ Object (readonly) 



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# File 'lib/puppet/util/windows/principal.rb', line 6

def sid_bytes
  @sid_bytes
end

Class Method Details

.lookup_account_name(system_name = nil, account_name) ⇒ Object 



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# File 'lib/puppet/util/windows/principal.rb', line 45

def self.(system_name = nil, )
  system_name_ptr = FFI::Pointer::NULL
  begin
    if system_name
      system_name_wide = Puppet::Util::Windows::String.wide_string(system_name)
      # uchar here is synonymous with byte
      system_name_ptr = FFI::MemoryPointer.new(:byte, system_name_wide.bytesize)
      system_name_ptr.put_array_of_uchar(0, system_name_wide.bytes.to_a)
    end

    FFI::MemoryPointer.from_string_to_wide_string() do ||
      FFI::MemoryPointer.new(:byte, MAXIMUM_SID_BYTE_LENGTH) do |sid_ptr|
        FFI::MemoryPointer.new(:dword, 1) do |sid_length_ptr|
          FFI::MemoryPointer.new(:dword, 1) do |domain_length_ptr|
            FFI::MemoryPointer.new(:uint32, 1) do |name_use_enum_ptr|

            sid_length_ptr.write_dword(MAXIMUM_SID_BYTE_LENGTH)
            success = LookupAccountNameW(system_name_ptr, , sid_ptr, sid_length_ptr,
              FFI::Pointer::NULL, domain_length_ptr, name_use_enum_ptr)
            last_error = FFI.errno

            if (success == FFI::WIN32_FALSE && last_error != ERROR_INSUFFICIENT_BUFFER)
              raise Puppet::Util::Windows::Error.new('Failed to call LookupAccountNameW', last_error)
            end

            FFI::MemoryPointer.new(:lpwstr, domain_length_ptr.read_dword) do |domain_ptr|
              if LookupAccountNameW(system_name_ptr, ,
                  sid_ptr, sid_length_ptr,
                  domain_ptr, domain_length_ptr, name_use_enum_ptr) == FFI::WIN32_FALSE
               raise Puppet::Util::Windows::Error.new('Failed to call LookupAccountNameW')
              end

              # with a SID returned, loop back through lookup_account_sid to retrieve official name
              # necessary when accounts like . or '' are passed in
              return (
                system_name,
                sid_ptr.read_bytes(sid_length_ptr.read_dword).unpack('C*'))
              end
            end
          end
        end
      end
    end
  ensure
    system_name_ptr.free if system_name_ptr != FFI::Pointer::NULL
  end
end

.lookup_account_sid(system_name = nil, sid_bytes) ⇒ Object 



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# File 'lib/puppet/util/windows/principal.rb', line 93

def self.(system_name = nil, sid_bytes)
  system_name_ptr = FFI::Pointer::NULL
  if (sid_bytes.nil? || (!sid_bytes.is_a? Array) || (sid_bytes.length == 0))
    raise Puppet::Util::Windows::Error.new('Byte array for lookup_account_sid must not be nil and must be at least 1 byte long')
  end

  begin
    if system_name
      system_name_wide = Puppet::Util::Windows::String.wide_string(system_name)
      # uchar here is synonymous with byte
      system_name_ptr = FFI::MemoryPointer.new(:byte, system_name_wide.bytesize)
      system_name_ptr.put_array_of_uchar(0, system_name_wide.bytes.to_a)
    end

    FFI::MemoryPointer.new(:byte, sid_bytes.length) do |sid_ptr|
      FFI::MemoryPointer.new(:dword, 1) do |name_length_ptr|
        FFI::MemoryPointer.new(:dword, 1) do |domain_length_ptr|
          FFI::MemoryPointer.new(:uint32, 1) do |name_use_enum_ptr|

            sid_ptr.write_array_of_uchar(sid_bytes)
            success = LookupAccountSidW(system_name_ptr, sid_ptr, FFI::Pointer::NULL, name_length_ptr,
              FFI::Pointer::NULL, domain_length_ptr, name_use_enum_ptr)
            last_error = FFI.errno

            if (success == FFI::WIN32_FALSE && last_error != ERROR_INSUFFICIENT_BUFFER)
              raise Puppet::Util::Windows::Error.new('Failed to call LookupAccountSidW', last_error)
            end

            FFI::MemoryPointer.new(:lpwstr, name_length_ptr.read_dword) do |name_ptr|
              FFI::MemoryPointer.new(:lpwstr, domain_length_ptr.read_dword) do |domain_ptr|
                if LookupAccountSidW(system_name_ptr, sid_ptr, name_ptr, name_length_ptr,
                    domain_ptr, domain_length_ptr, name_use_enum_ptr) == FFI::WIN32_FALSE
                 raise Puppet::Util::Windows::Error.new('Failed to call LookupAccountSidW')
                end

                return new(
                  name_ptr.read_wide_string(name_length_ptr.read_dword),
                  sid_bytes,
                  Puppet::Util::Windows::SID.sid_ptr_to_string(sid_ptr),
                  domain_ptr.read_wide_string(domain_length_ptr.read_dword),
                  SID_NAME_USE[name_use_enum_ptr.read_uint32])
              end
            end
          end
        end
      end
    end
  ensure
    system_name_ptr.free if system_name_ptr != FFI::Pointer::NULL
  end
end

Instance Method Details

#==(compare) ⇒ Object

added for backward compatibility



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# File 'lib/puppet/util/windows/principal.rb', line 30

def ==(compare)
  compare.is_a?(Puppet::Util::Windows::SID::Principal) &&
    @sid_bytes == compare.sid_bytes
end

#to_s ⇒ Object

added for backward compatibility



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# File 'lib/puppet/util/windows/principal.rb', line 36

def to_s
  @sid
end