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#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2013-2017 Chris Johns (chrisj@rtems.org)
# All rights reserved.
#
# This file is part of the RTEMS Tools package in 'rtems-tools'.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# RTEMS Testing Consoles
#
import errno
import os
import sys
import telnetlib
from rtemstoolkit import error
from rtemstoolkit import host
from rtemstoolkit import path
class tty:
def __init__(self, dev):
self.dev = dev
self.timeout = 5
self.conn = None
ds = dev.split(':')
self.host = ds[0]
if len(ds) == 1:
self.port = 23
else:
try:
self.port = int(ds[1])
except:
raise error.general('invalid port: %s' % (dev))
self.conn = telnetlib.Telnet()
self._reopen()
def __del__(self):
if self.conn:
try:
self.conn.close()
except:
pass
def __str__(self):
s = 'host: %s port: %d' % ((self.host, self.port))
return s
def _reopen(self):
try:
self.conn.open(self.host, self.port, self.timeout)
except IOError as ioe:
raise error.general('opening telnet: %s:%d: %s' % (self.host,
self.port,
ioe))
except:
raise error.general('opening telnet: %s:%d: unknown' % (self.host,
self.port))
def off(self):
self.is_on = False
def on(self):
self.is_on = True
def set(self, flags):
pass
def read(self):
reopen = False
try:
data = self.conn.read_very_eager()
except IOError as ioe:
if ioe.errno == errno.ECONNREFUSED:
reopen = True
data = ''
except EOFError:
reopen = True
data = ''
if reopen:
self._reopen()
return data
if __name__ == "__main__":
if len(sys.argv) == 2:
import time
t = tty(sys.argv[1])
print(t)
while True:
time.sleep(0.05)
c = t.read()
sys.stdout.write(c)
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