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LeonMMS

May 16th, 2025

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#==============================================================================
# ** Socket
#------------------------------------------------------------------------------
# Esta classe lida com o soquete de rede. Ela estabelece
# uma conexão entre o cliente e o servidor.
#------------------------------------------------------------------------------
# Autor: Cidiomar
#==============================================================================
class SocketError < StandardError
ENOASSOCHOST = 'getaddrinfo: nenhum endereço associado ao nome do host.'
lib = Fiddle.dlopen('System/VXAOS.dll')
SocketLib__GetLastError = Fiddle::Function.new(
lib['SocketLib__GetLastError'],
[],
Fiddle::TYPE_INT
)
def self.raise(errno = SocketLib__GetLastError.call)
Kernel.raise(
Errno.const_get(
Errno.constants.detect do |c|
Errno.const_get(c).new.errno == errno
end
),
'',
caller(2)
)
end
def self.raise_no_assoc_host
Kernel.raise(SocketError, ENOASSOCHOST, caller(2))
end
end
#==============================================================================
# ** SocketLib
#==============================================================================
class SocketLib
lib = Fiddle.dlopen('System/VXAOS.dll')
SocketLib__setup = Fiddle::Function.new(
lib['SocketLib__setup'],
[],
Fiddle::TYPE_INT
)
SocketLib__connect = Fiddle::Function.new(
lib['SocketLib__connect'],
[
Fiddle::TYPE_VOIDP,
Fiddle::TYPE_VOIDP,
Fiddle::TYPE_VOIDP
],
Fiddle::TYPE_INT
)
SocketLib__close = Fiddle::Function.new(
lib['SocketLib__close'],
[Fiddle::TYPE_UINT],
Fiddle::TYPE_INT
)
SocketLib__send = Fiddle::Function.new(
lib['SocketLib__send'],
[
Fiddle::TYPE_UINT,
Fiddle::TYPE_VOIDP,
Fiddle::TYPE_INT
],
Fiddle::TYPE_INT
)
SocketLib__recv = Fiddle::Function.new(
lib['SocketLib__recv'],
[
Fiddle::TYPE_UINT,
Fiddle::TYPE_VOIDP,
Fiddle::TYPE_INT
],
Fiddle::TYPE_INT
)
SocketLib__recv_non_block = Fiddle::Function.new(
lib['SocketLib__recv_non_block'],
[
Fiddle::TYPE_UINT,
Fiddle::TYPE_VOIDP,
Fiddle::TYPE_INT
],
Fiddle::TYPE_INT
)
SocketLib__TestHost = Fiddle::Function.new(
lib['SocketLib__TestHost'],
[
Fiddle::TYPE_VOIDP,
Fiddle::TYPE_VOIDP
],
Fiddle::TYPE_INT
)
SocketLib__eof = Fiddle::Function.new(
lib['SocketLib__eof'],
[Fiddle::TYPE_UINT],
Fiddle::TYPE_INT
)
def initialize(ip, port)
_port = port.to_s
@socket_id = [0, 0, 0, 0].pack('L')
err = SocketLib__connect.call(ip, _port, @socket_id)
unless err == 0
if err == -1
SocketError.raise_no_assoc_host
else
SocketError.raise
end
end
@socket_id = @socket_id.unpack1('L')
end
def send(data)
data = data.to_s
return 0 if data.empty?
if (ss = SocketLib__send.call(@socket_id, data, data.bytesize)) < 0
SocketError.raise
end
ss
end
def recv(maxlen)
buff = "\0" * (maxlen.to_i + 4)
r_len = SocketLib__recv.call(@socket_id, buff, maxlen)
SocketError.raise if r_len < 0
if r_len == maxlen
buff
else
buff[0...r_len]
end
end
def recv_non_block(maxlen)
buff = "\0" * (maxlen.to_i + 4)
r_len = SocketLib__recv_non_block.call(@socket_id, buff, maxlen)
return -1 if r_len <= 0
if r_len == maxlen
buff
else
buff[0...r_len]
end
end
def eof?
SocketLib__eof.call(@socket_id) == 0
end
def close
SocketLib__close.call(@socket_id)
end
class << self
def test_host(ip, port)
if (SocketLib__TestHost.call(ip, port) == 1)
return true
else
SocketError::SocketLib__GetLastError.call()
return false
end
end
end
# Consulta o ping de forma bloqueante. Deve ser
# utilizado apenas em situações realmente necessárias.
def self.ping(server)
IO.popen("ping -n 1 #{server}").close
$?.exitstatus == 0
end
if SocketLib__setup.call != 0
SocketError.raise
end
end

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