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pager.py
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pager.py
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#!/usr/bin/env python
##############################################################################
# OpenLFConnect
#
# Copyright (c) 2012 Jason Pruitt <[email protected]>
#
# This file is part of OpenLFConnect.
# OpenLFConnect is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# OpenLFConnect is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OpenLFConnect. If not, see <http://www.gnu.org/licenses/>.
##############################################################################
##############################################################################
# Title: OpenLFConnect
# Author: Jason Pruitt
# Email: [email protected]
# IRC: #didj irc.freenode.org
# Wiki: http://elinux.org/LeapFrog_Pollux_Platform:_OpenLFConnect
##############################################################################
#@
# pager.py Version 0.7
import os
import sys
import struct
from shlex import split as shlex_split
from subprocess import Popen, PIPE
import cbf
class client(object):
def __init__(self, mount_config, debug=False):
self.debug = debug
self._mount_config = mount_config
self._file_size = 0
if sys.platform == 'win32':
self._sg_raw = 'bin/sg_raw'
self._sg_verify = 'bin/sg_verify'
else:
self._sg_raw = 'sg_raw'
self._sg_verify = 'sg_verify'
#######################
# Internal functions
#######################
def error(self, e):
assert False, '%s' % e
def rerror(self, e):
assert False, 'Pager Error: %s' % e
#######################
# User functions
#######################
def upload(self, path):
try:
if not os.path.exists(path) or os.path.isdir(path):
self.error('Surgeon not found.')
cbf.check(path)
buf = ''
with open(path, 'rb') as f:
buf = f.read()
f.close()
buf_len = len(buf)
packet_leftovers = buf_len % cbf.PACKET_SIZE
if packet_leftovers > 0:
padding_size = cbf.PACKET_SIZE - packet_leftovers
buf += struct.pack('%ss' % padding_size, '\xFF'*padding_size)
buf_len = len(buf)
packets = buf_len/cbf.PACKET_SIZE
byte1 = '00'
total = 0
last_total = 0
for i in range(0, packets):
cmdl = '%s %s -b -s %s -n 2A 00 00 00 00 %s 00 00 20 00' % (self._sg_raw, self._mount_config.device_id, cbf.PACKET_SIZE, byte1)
cmd = shlex_split(cmdl)
byte1 = '01'
p = Popen(cmd, stdin=PIPE, stderr=PIPE)
p.stdin.write(buf[last_total:last_total+cbf.PACKET_SIZE])
err = p.stderr.read()
if not 'Good' in err:
self.error('SCSI error.')
last_total += cbf.PACKET_SIZE
p = Popen([self._sg_verify, self._mount_config.device_id], stderr=PIPE)
err = p.stderr.read()
if len(err) != 0:
self.error('SCSI error.')
except Exception, e:
self.rerror(e)
if __name__ == '__main__':
print 'No examples yet.'