259 lines
6.1 KiB
Python
259 lines
6.1 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2008 (C) Jose Vasconcellos <jvasco@verizon.net>
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#
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# A script that can communicate with jungo-based routers
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# (such as MI424-WR, USR8200 and WRV54G) to backup the installed
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# firmware and replace the boot loader.
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#
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# Tested with Python 2.5 on Linux and Windows
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#
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"""Usage: %s [options] <IP_address> [redboot.bin]
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Valid options:
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\t-h | --help: usage statement
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\t-d | --no-dump: don't create a flash dump
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\t-f | --file: use <filename> to store dump contents
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\t-u | --user: provide username (default admin)
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\t-p | --pass: provide password (default password1)
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\t-P | --proto: set transfer protocol (default http)
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\t --port: set port for http (default 8080)
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\t-s | --server: IP address of tftp server
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\t-w | --write: initiate loading of redboot (default no modification to flash)
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\t-q | --quiet: don't display unnecessary information
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\t-v | --verbose: display progress information
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\t-V | --version: display version information
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"""
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import os
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import sys
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import getopt
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import getpass
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import telnetlib
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import string
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import binascii
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import socket
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import thread
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import SocketServer
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import SimpleHTTPServer
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server = ""
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HOST = "192.168.1.1"
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PORT = 8080
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user = "admin"
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#password = getpass.getpass()
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password = "password1"
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proto = "http"
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imagefile = "redboot.bin"
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dumpfile = ""
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verbose = 1
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no_dump = 0
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dumplen = 0x10000
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write_image = 0
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flashsize=4*1024*1024
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#device="br0"
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device="ixp0"
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####################
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def start_server():
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httpd = SocketServer.TCPServer((server,PORT),SimpleHTTPServer.SimpleHTTPRequestHandler)
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thread.start_new_thread(httpd.serve_forever,())
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####################
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def get_flash_size():
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global flashsize
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tn.write("cat /proc/mtd\n")
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# wait for prompt
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buf = tn.read_until("Returned 0", 3)
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if buf:
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i = buf.find('mtd0:')
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if i > 0:
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flashsize = int(buf[i+6:].split()[0],16)
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else:
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print "Can't find mtd0!"
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else:
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print "Can't access /proc/mtd!"
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def image_dump(tn, dumpfile):
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if not dumpfile:
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tn.write("ver\n");
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buf = tn.read_until("Returned 0")
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i = buf.find("Platform:")
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if i < 0:
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platform="jungo"
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else:
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line=buf[i+9:]
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i=line.find('\n')
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platform=line[:i].split()[-1]
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tn.write("ifconfig -v %s\n" % device);
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buf = tn.read_until("Returned 0")
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i = buf.find("mac = 0")
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if i > 0:
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i += 6
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else:
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print "No MAC address found! (use -f option)"
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sys.exit(1)
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dumpfile = "%s-%s.bin" % (platform, buf[i:i+17].replace(':',''))
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else:
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tn.write("\n")
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print "Dumping flash contents (%dMB) to %s" % (flashsize/1048576, dumpfile)
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f = open(dumpfile, "wb")
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t=flashsize/dumplen
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for addr in range(t):
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if verbose:
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sys.stdout.write('\r%d%%'%(100*addr/t))
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sys.stdout.flush()
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tn.write("flash_dump -r 0x%x -l %d -4\n" % (addr*dumplen, dumplen))
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tn.read_until("\n")
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count = addr*dumplen
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while 1:
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buf = tn.read_until("\n")
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if buf.strip() == "Returned 0":
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break
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s = buf.split()
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if s and s[0][-1] == ':':
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a=int(s[0][:-1],16)
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if a != count:
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print "Format error: %x != %x"%(a,count)
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sys.exit(2)
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count += 16
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f.write(binascii.a2b_hex(string.join(s[1:],'')))
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tn.read_until(">",1)
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f.close()
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if verbose:
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print ""
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def telnet_option(sock,cmd,option):
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#print "Option: %d %d" % (ord(cmd), ord(option))
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if cmd == telnetlib.DO:
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c=telnetlib.WILL
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elif cmd == telnetlib.WILL:
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c=telnetlib.DO
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sock.sendall(telnetlib.IAC + c + option)
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def telnet_timeout():
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print "Fatal error: telnet timeout!"
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sys.exit(1)
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def usage():
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print __doc__ % os.path.basename(sys.argv[0])
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####################
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try:
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opts, args = getopt.getopt(sys.argv[1:], "hdf:u:qp:P:s:vVw", \
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["help", "dump", "file=", "user=", "pass=", "port=", "proto=",
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"quiet=", "server=", "verbose", "version", "write"])
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except getopt.GetoptError:
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# print help information and exit:
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usage()
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sys.exit(1)
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for o, a in opts:
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if o in ("-h", "--help"):
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usage()
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sys.exit(1)
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elif o in ("-V", "--version"):
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print "%s: 0.8" % sys.argv[0]
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sys.exit(1)
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elif o in ("-d", "--no-dump"):
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no_dump = 1
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elif o in ("-f", "--file"):
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dumpfile = a
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elif o in ("-s", "--server"):
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server = a
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elif o in ("-u", "--user"):
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user = a
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elif o in ("-p", "--pass"):
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password = a
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elif o in ("-P", "--proto"):
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proto = a
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elif o == "--port":
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PORT = int(a)
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elif o in ("-w", "--write"):
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write_image = 1
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elif o in ("-q", "--quiet"):
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verbose = 0
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elif o in ("-v", "--verbose"):
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verbose = 1
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# make sure we have enough arguments
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if len(args) > 0:
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HOST = args[0]
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if len(args) == 2:
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imagefile = args[1]
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####################
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# create a telnet session to the router
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try:
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tn = telnetlib.Telnet(HOST)
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except socket.error, msg:
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print "Unable to establish telnet session to %s: %s" % (HOST, msg)
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sys.exit(1)
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tn.set_option_negotiation_callback(telnet_option)
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buf = tn.read_until("Username: ", 3)
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if not buf:
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telnet_timeout()
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tn.write(user+"\n")
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if password:
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buf = tn.read_until("Password: ", 3)
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if not buf:
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telnet_timeout()
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tn.write(password+"\n")
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# wait for prompt
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buf = tn.read_until("> ", 3)
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if not buf:
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telnet_timeout()
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get_flash_size()
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if not no_dump:
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image_dump(tn, dumpfile)
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if write_image:
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if not os.access(imagefile, os.R_OK):
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print "File access error: %s" % (imagefile)
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sys.exit(3)
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splitpath = os.path.split(imagefile)
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# make sure we're in the directory where the image is located
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if splitpath[0]:
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os.chdir(splitpath[0])
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# write image file image
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if not server:
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server = tn.get_socket().getsockname()[0]
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if proto == "http":
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cmd = "load -u %s://%s:%d/%s -r 0\n" % (proto, server, PORT, splitpath[1])
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else:
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cmd = "load -u %s://%s/%s -r 0\n" % (proto, server, splitpath[1])
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if proto == "http":
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start_server()
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if verbose:
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print "Unlocking flash..."
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tn.write("unlock 0 0x%x\n" % flashsize)
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buf = tn.read_until("Returned 0")
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if verbose:
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print "Writing new image..."
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print cmd,
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tn.write(cmd)
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buf = tn.read_until("Returned 0",10)
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tn.write("exit\n")
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tn.close()
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