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#!/usr/bin/env python
#
# Copyright 2008 (C) Jose Vasconcellos <jvasco@verizon.net>
#
# A script that can communicate with jungo-based routers
# (such as MI424-WR, USR8200 and WRV54G) to backup the installed
# firmware and replace the boot loader.
#
# Tested with Python 2.5 on Linux and Windows
#
"""Usage: %s [options] <IP_address> [redboot.bin]
Valid options:
\t-h | --help: usage statement
\t-d | --no-dump: don't create a flash dump
\t-f | --file: use <filename> to store dump contents
\t-u | --user: provide username (default admin)
\t-p | --pass: provide password (default password1)
\t-P | --proto: set transfer protocol (default http)
\t --port: set port for http (default 8080)
\t-s | --server: IP address of tftp server
\t-w | --write: initiate loading of redboot (default no modification to flash)
\t-q | --quiet: don't display unnecessary information
\t-v | --verbose: display progress information
\t-V | --version: display version information
"""
import os
import sys
import getopt
import getpass
import telnetlib
import string
import binascii
import socket
import thread
import SocketServer
import SimpleHTTPServer
server = ""
HOST = "192.168.1.1"
PORT = 8080
user = "admin"
#password = getpass.getpass()
password = "password1"
proto = "http"
imagefile = "redboot.bin"
dumpfile = ""
verbose = 1
no_dump = 0
dumplen = 0x10000
write_image = 0
flashsize=4*1024*1024
#device="br0"
device="ixp0"
####################
def start_server():
httpd = SocketServer.TCPServer((server,PORT),SimpleHTTPServer.SimpleHTTPRequestHandler)
thread.start_new_thread(httpd.serve_forever,())
####################
def get_flash_size():
global flashsize
tn.write("cat /proc/mtd\n")
# wait for prompt
buf = tn.read_until("Returned 0", 3)
if buf:
i = buf.find('mtd0:')
if i > 0:
flashsize = int(buf[i+6:].split()[0],16)
else:
print "Can't find mtd0!"
else:
print "Can't access /proc/mtd!"
def image_dump(tn, dumpfile):
if not dumpfile:
tn.write("ver\n");
buf = tn.read_until("Returned 0")
i = buf.find("Platform:")
if i < 0:
platform="jungo"
else:
line=buf[i+9:]
i=line.find('\n')
platform=line[:i].split()[-1]
tn.write("ifconfig -v %s\n" % device);
buf = tn.read_until("Returned 0")
i = buf.find("mac = 0")
if i > 0:
i += 6
else:
print "No MAC address found! (use -f option)"
sys.exit(1)
dumpfile = "%s-%s.bin" % (platform, buf[i:i+17].replace(':',''))
else:
tn.write("\n")
print "Dumping flash contents (%dMB) to %s" % (flashsize/1048576, dumpfile)
f = open(dumpfile, "wb")
t=flashsize/dumplen
for addr in range(t):
if verbose:
sys.stdout.write('\r%d%%'%(100*addr/t))
sys.stdout.flush()
tn.write("flash_dump -r 0x%x -l %d -4\n" % (addr*dumplen, dumplen))
tn.read_until("\n")
count = addr*dumplen
while 1:
buf = tn.read_until("\n")
if buf.strip() == "Returned 0":
break
s = buf.split()
if s and s[0][-1] == ':':
a=int(s[0][:-1],16)
if a != count:
print "Format error: %x != %x"%(a,count)
sys.exit(2)
count += 16
f.write(binascii.a2b_hex(string.join(s[1:],'')))
tn.read_until(">",1)
f.close()
if verbose:
print ""
def telnet_option(sock,cmd,option):
#print "Option: %d %d" % (ord(cmd), ord(option))
if cmd == telnetlib.DO:
c=telnetlib.WILL
elif cmd == telnetlib.WILL:
c=telnetlib.DO
sock.sendall(telnetlib.IAC + c + option)
def telnet_timeout():
print "Fatal error: telnet timeout!"
sys.exit(1)
def usage():
print __doc__ % os.path.basename(sys.argv[0])
####################
try:
opts, args = getopt.getopt(sys.argv[1:], "hdf:u:qp:P:s:vVw", \
["help", "dump", "file=", "user=", "pass=", "proto=", "proto=",
"quiet=", "server=", "verbose", "version", "write"])
except getopt.GetoptError:
# print help information and exit:
usage()
sys.exit(1)
for o, a in opts:
if o in ("-h", "--help"):
usage()
sys.exit(1)
if o in ("-V", "--version"):
print "%s: 0.7" % sys.argv[0]
sys.exit(1)
if o in ("-d", "--no-dump"):
no_dump = 1
if o in ("-f", "--file"):
dumpfile = a
if o in ("-s", "--server"):
server = a
if o in ("-u", "--user"):
user = a
if o in ("-p", "--pass"):
password = a
if o in ("-P", "--proto"):
proto = a
if o in ("--port"):
PORT = a
if o in ("-w", "--write"):
write_image = 1
if o in ("-q", "--quiet"):
verbose = 0
if o in ("-v", "--verbose"):
verbose = 1
# make sure we have enough arguments
if len(args) > 0:
HOST = args[0]
if len(args) == 2:
imagefile = args[1]
####################
# create a telnet session to the router
try:
tn = telnetlib.Telnet(HOST)
except socket.error, msg:
print "Unable to establish telnet session to %s: %s" % (HOST, msg)
sys.exit(1)
tn.set_option_negotiation_callback(telnet_option)
buf = tn.read_until("Username: ", 3)
if not buf:
telnet_timeout()
tn.write(user+"\n")
if password:
buf = tn.read_until("Password: ", 3)
if not buf:
telnet_timeout()
tn.write(password+"\n")
# wait for prompt
buf = tn.read_until("> ", 3)
if not buf:
telnet_timeout()
get_flash_size()
if not no_dump:
image_dump(tn, dumpfile)
if write_image:
if not os.access(imagefile, os.R_OK):
print "File access error: %s" % (imagefile)
sys.exit(3)
splitpath = os.path.split(imagefile)
# make sure we're in the directory where the image is located
if splitpath[0]:
os.chdir(splitpath[0])
# write image file image
if not server:
server = tn.get_socket().getsockname()[0]
if proto == "http":
cmd = "load -u %s://%s:%d/%s -r 0\n" % (proto, server, PORT, splitpath[1])
else:
cmd = "load -u %s://%s/%s -r 0\n" % (proto, server, splitpath[1])
if proto == "http":
start_server()
if verbose:
print "Unlocking flash..."
tn.write("unlock 0 0x%x\n" % flashsize)
buf = tn.read_until("Returned 0")
if verbose:
print "Writing new image..."
print cmd,
tn.write(cmd)
buf = tn.read_until("Returned 0")
tn.write("exit\n")
tn.close()
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