Module: RubySL::Socket::Foreign

Extended by:
Rubinius::FFI::Library
Defined in:
lib/rubysl/socket/bsd.rb,
lib/rubysl/socket/linux.rb,
lib/rubysl/socket/foreign.rb,
lib/rubysl/socket/foreign/iovec.rb,
lib/rubysl/socket/foreign/linger.rb,
lib/rubysl/socket/foreign/msghdr.rb,
lib/rubysl/socket/foreign/hostent.rb,
lib/rubysl/socket/foreign/ifaddrs.rb,
lib/rubysl/socket/foreign/servent.rb,
lib/rubysl/socket/foreign/addrinfo.rb,
lib/rubysl/socket/foreign/sockaddr.rb,
lib/rubysl/socket/foreign/sockaddr_in.rb,
lib/rubysl/socket/foreign/sockaddr_un.rb,
lib/rubysl/socket/foreign/sockaddr_in6.rb

Defined Under Namespace

Classes: Addrinfo, Hostent, Ifaddrs, Iovec, Linger, Msghdr, Servent, Sockaddr, SockaddrIn, SockaddrIn6, SockaddrUn

Constant Summary collapse

SIZEOF_INT = 
Rubinius::FFI.type_size(:int)

Class Method Summary collapse

Class Method Details

.bind(descriptor, sockaddr) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 70

def self.bind(descriptor, sockaddr)
  memory_pointer(:char, sockaddr.bytesize) do |sockaddr_p|
    sockaddr_p.write_string(sockaddr, sockaddr.bytesize)

    _bind(descriptor, sockaddr_p, sockaddr.bytesize)
  end
end

.char_pointer(length, &block) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 288

def self.char_pointer(length, &block)
  memory_pointer(:char, length, &block)
end

.connect(descriptor, sockaddr) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 78

def self.connect(descriptor, sockaddr)
  sockaddr = Socket.coerce_to_string(sockaddr)

  memory_pointer(:char, sockaddr.bytesize) do |sockaddr_p|
    sockaddr_p.write_string(sockaddr, sockaddr.bytesize)

    _connect(descriptor, sockaddr_p, sockaddr.bytesize)
  end
end

.getaddress(host) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 154

def self.getaddress(host)
  addrinfos = getaddrinfo(host)

  unpack_sockaddr_in(addrinfos.first[4], false).first
end

.getaddrinfo(host, service = nil, family = nil, socktype = nil, protocol = nil, flags = nil) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 102

def self.getaddrinfo(host, service = nil, family = nil, socktype = nil,
                     protocol = nil, flags = nil)
  hints = Addrinfo.new

  hints[:ai_family]   = family || 0
  hints[:ai_socktype] = socktype || 0
  hints[:ai_protocol] = protocol || 0
  hints[:ai_flags]    = flags || 0

  res_p = memory_pointer(:pointer)
  err   = _getaddrinfo(host, service, hints.pointer, res_p)

  raise SocketError, gai_strerror(err) unless err == 0

  ptr = res_p.read_pointer

  return [] unless ptr

  res = Addrinfo.new(ptr)

  addrinfos = []

  while true
    addrinfo = []
    addrinfo << res[:ai_flags]
    addrinfo << res[:ai_family]
    addrinfo << res[:ai_socktype]
    addrinfo << res[:ai_protocol]
    addrinfo << res[:ai_addr].read_string(res[:ai_addrlen])
    addrinfo << res[:ai_canonname]

    addrinfos << addrinfo

    break unless res[:ai_next]

    res = Addrinfo.new(res[:ai_next])
  end

  return addrinfos
ensure
  hints.free if hints

  if res_p
    ptr = res_p.read_pointer

    # Be sure to feed a legit pointer to freeaddrinfo
    freeaddrinfo(ptr) if ptr && !ptr.null?

    res_p.free
  end
end

.getnameinfo(sockaddr, flags = ::Socket::NI_NUMERICHOST | ::Socket::NI_NUMERICSERV, reverse_lookup = !BasicSocket.do_not_reverse_lookup)) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 160

def self.getnameinfo(sockaddr, flags = ::Socket::NI_NUMERICHOST | ::Socket::NI_NUMERICSERV,
                     reverse_lookup = !BasicSocket.do_not_reverse_lookup)
  name_info = []

  char_pointer(sockaddr.bytesize) do |sockaddr_p|
    char_pointer(::Socket::NI_MAXHOST) do |node|
      char_pointer(::Socket::NI_MAXSERV) do |service|
        sockaddr_p.write_string(sockaddr, sockaddr.bytesize)

        if reverse_lookup
          err = _getnameinfo(sockaddr_p, sockaddr.bytesize, node,
                             ::Socket::NI_MAXHOST, nil, 0, 0)

          name_info[2] = node.read_string if err == 0
        end

        err = _getnameinfo(sockaddr_p, sockaddr.bytesize, node,
                           ::Socket::NI_MAXHOST, service,
                           ::Socket::NI_MAXSERV, flags)

        raise SocketError, gai_strerror(err) unless err == 0

        sa_family = SockaddrIn.with_sockaddr(sockaddr)[:sin_family]

        name_info[0] = ::Socket::Constants::AF_TO_FAMILY[sa_family]
        name_info[1] = service.read_string
        name_info[3] = node.read_string
      end
    end
  end

  name_info[2] = name_info[3] unless name_info[2]

  name_info
end

.getpeereid ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/rubysl/socket/bsd.rb', line 9

def self.getpeereid(descriptor)
  euid = Foreign.memory_pointer(:int)
  egid = Foreign.memory_pointer(:int)

  begin
    res = _getpeereid(descriptor, euid, egid)

    if res == 0
      [euid.read_int, egid.read_int]
    else
      Errno.handle('getpeereid(3)')
    end
  ensure
    euid.free
    egid.free
  end
end

.getpeername(descriptor) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 196

def self.getpeername(descriptor)
  memory_pointer(:char, 128) do |sockaddr_storage_p|
    memory_pointer(:socklen_t) do |len_p|
      len_p.write_int(128)

      err = _getpeername(descriptor, sockaddr_storage_p, len_p)

      Errno.handle('getpeername(2)') unless err == 0

      sockaddr_storage_p.read_string(len_p.read_int)
    end
  end
end

.getsockname(descriptor) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 210

def self.getsockname(descriptor)
  memory_pointer(:char, 128) do |sockaddr_storage_p|
    memory_pointer(:socklen_t) do |len_p|
      len_p.write_int(128)

      err = _getsockname(descriptor, sockaddr_storage_p, len_p)

      Errno.handle('getsockname(2)') unless err == 0

      sockaddr_storage_p.read_string(len_p.read_int)
    end
  end
end

.getsockopt(descriptor, level, optname) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 88

def self.getsockopt(descriptor, level, optname)
  memory_pointer(256) do |val|
    memory_pointer(:socklen_t) do |length|
      length.write_int(256)

      err = _getsockopt(descriptor, level, optname, val, length)

      Errno.handle('Unable to get socket option') unless err == 0

      return val.read_string(length.read_int)
    end
  end
end

.ip_to_bytes(family, address) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 311

def self.ip_to_bytes(family, address)
  size = 16

  memory_pointer(:pointer, size) do |pointer|
    status = inet_pton(family, address, pointer)

    Errno.handle('inet_pton()') if status < 1

    pointer.get_array_of_uchar(0, size)
  end
end

.memory_pointer(*args, &block) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 292

def self.memory_pointer(*args, &block)
  Rubinius::FFI::MemoryPointer.new(*args, &block)
end

.pack_sockaddr_in(host, port, family = ::Socket::AF_UNSPEC, type = 0, flags = 0) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 224

def self.pack_sockaddr_in(host, port, family = ::Socket::AF_UNSPEC,
                          type = 0, flags = 0)
  hints = Addrinfo.new

  hints[:ai_family]   = family
  hints[:ai_socktype] = type
  hints[:ai_flags]    = flags

  if host and host.empty?
    host = "0.0.0.0"
  end

  res_p = memory_pointer(:pointer)

  err = _getaddrinfo(host, port.to_s, hints.pointer, res_p)

  raise SocketError, gai_strerror(err) unless err == 0

  return [] if res_p.read_pointer.null?

  res = Addrinfo.new(res_p.read_pointer)

  return res[:ai_addr].read_string(res[:ai_addrlen])
ensure
  hints.free if hints

  if res_p
    ptr = res_p.read_pointer

    freeaddrinfo(ptr) if ptr && !ptr.null?

    res_p.free
  end
end

.pointers_of_type(current, type) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 296

def self.pointers_of_type(current, type)
  pointers = []
  size     = Rubinius::FFI.type_size(type)
  pointer  = current.read_pointer

  until pointer.null?
    pointers << pointer

    current = current + size
    pointer = current.read_pointer
  end

  pointers
end

.socketpair(family, type, protocol) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 280

def self.socketpair(family, type, protocol)
  memory_pointer(:int, 2) do |pointer|
    _socketpair(family, type, protocol, pointer)

    pointer.read_array_of_int(2)
  end
end

.unpack_sockaddr_in(sockaddr, reverse_lookup) ⇒ Object 



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# File 'lib/rubysl/socket/foreign.rb', line 259

def self.unpack_sockaddr_in(sockaddr, reverse_lookup)
  family, port, host, ip = getnameinfo(
    sockaddr,
    ::Socket::NI_NUMERICHOST | ::Socket::NI_NUMERICSERV,
    reverse_lookup
  )

  # On some systems this doesn't fail for families other than AF_INET(6)
  # so we raise manually here.
  unless family =~ /AF_INET/
    raise ArgumentError, 'not an AF_INET/AF_INET6 sockaddr'
  end

  return host, ip, port.to_i
end