scripts/jungo-image.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2008 (C) Jose Vasconcellos <jvasco@verizon.net>
   4 #
   5 # A script that can communicate with jungo-based routers
   6 # (such as MI424-WR, USR8200 and WRV54G to backup the installed
   7 # firmware and replace the boot loader.
   8 #
   9 # Tested with Python 2.5 on Linux and Windows
  10 #
  11 """Usage: %s [options] <IP_address> [redboot.bin]
  12 Valid options:
  13 \t-h | --help: usage statement
  14 \t-d | --no-dump: don't create a flash dump
  15 \t-f | --file: use <filename> to store dump contents
  16 \t-u | --user: provide username (default admin)
  17 \t-p | --pass: provide password (default password1)
  18 \t-P | --proto: set transfer protocol (default tftp)
  19 \t-s | --server: IP address of tftp server
  20 \t-w | --write: initiate loading of redboot (default no modification to flash)
  21 \t-v | --verbose: display additional information
  22 \t-V | --version: display version information
  23 """
  24
  25 import os
  26 import sys
  27 import getopt
  28 import getpass
  29 import telnetlib
  30 import string
  31 import binascii
  32 import socket
  33 import thread
  34 import SocketServer
  35 import SimpleHTTPServer
  36
  37 server = ""
  38 HOST = "192.168.1.1"
  39 PORT = 8080
  40 user = "admin"
  41 #password = getpass.getpass()
  42 password = "password1"
  43 proto = "http"
  44 imagefile = "redboot.bin"
  45 dumpfile = ""
  46 verbose = 0
  47 no_dump = 0
  48 dumplen = 0x10000
  49 write_image = 0
  50 flashsize=8*1024*1024
  51
  52 ####################
  53
  54 def start_server():
  55     httpd = SocketServer.TCPServer((server,PORT),SimpleHTTPServer.SimpleHTTPRequestHandler)
  56     thread.start_new_thread(httpd.serve_forever,())
  57
  58 ####################
  59
  60 def get_flash_size():
  61     tn.write("cat /proc/mtd\n")
  62     # wait for prompt
  63     buf = tn.read_until("Returned 0", 3)
  64     if buf:
  65         i = buf.find('mtd0:')
  66         if i > 0:
  67             flashsize = int(buf[i+6:].split()[0],16)
  68
  69 def image_dump(tn, dumpfile):
  70     if not dumpfile:
  71         tn.write("ver\n");
  72         buf = tn.read_until("Returned 0")
  73         i = buf.find("Platform:")
  74         if i < 0:
  75             platform="jungo"
  76         else:
  77             platform=buf[i+9:].split()[0]
  78
  79         tn.write("ifconfig br0\n");
  80         buf = tn.read_until("Returned 0")
  81
  82         i = buf.find("MAC=")
  83         if i < 0:
  84             print "No MAC address found! (use -f option)"
  85             sys.exit(1)
  86         dumpfile = "%s-%s.bin" % (platform, buf[i+4:i+21].replace(':',''))
  87     else:
  88         tn.write("\n")
  89
  90     print "Dumping flash contents (%dMB) to %s\n" % (flashsize/1048576, dumpfile)
  91     f = open(dumpfile, "wb")
  92
  93     for addr in range(flashsize/dumplen):
  94         if verbose:
  95             sys.stdout.write('.')
  96             sys.stdout.flush()
  97
  98         tn.write("flash_dump -r 0x%x -l %d -4\n" % (addr*dumplen, dumplen))
  99         tn.read_until("\n")
 100
 101         count = addr*dumplen
 102         while 1:
 103             buf = tn.read_until("\n")
 104             if buf.strip() == "Returned 0":
 105                 break
 106             s = buf.split()
 107             if s and s[0][-1] == ':':
 108                 a=int(s[0][:-1],16)
 109                 if a != count:
 110                     print "Format error: %x != %x"%(a,count)
 111                     sys.exit(2)
 112                 count += 16
 113                 f.write(binascii.a2b_hex(string.join(s[1:],'')))
 114         tn.read_until(">",1)
 115
 116     f.close()
 117
 118 def telnet_option(sock,cmd,option):
 119     #print "Option: %d %d" % (ord(cmd), ord(option))
 120     if cmd == telnetlib.DO:
 121         c=telnetlib.WILL
 122     elif cmd == telnetlib.WILL:
 123         c=telnetlib.DO
 124     sock.sendall(telnetlib.IAC + c + option)
 125
 126 def telnet_timeout():
 127     print "Fatal error: telnet timeout!"
 128     sys.exit(1)
 129
 130 def usage():
 131     print __doc__ % os.path.basename(sys.argv[0])
 132
 133 ####################
 134
 135 try:
 136     opts, args = getopt.getopt(sys.argv[1:], "hdf:u:p:P:s:vVw", \
 137         ["help", "dump", "file=", "user=", "pass=", "proto=","server=", "verbose", "version", "write"])
 138 except getopt.GetoptError:
 139     # print help information and exit:
 140     usage()
 141     sys.exit(1)
 142
 143 for o, a in opts:
 144     if o in ("-h", "--help"):
 145         usage()
 146         sys.exit(1)
 147     if o in ("-V", "--version"):
 148         print "%s: 0.6" % sys.argv[0]
 149         sys.exit(1)
 150     if o in ("-d", "--no-dump"):
 151         no_dump = 1
 152     if o in ("-f", "--file"):
 153         dumpfile = a
 154     if o in ("-s", "--server"):
 155         server = a
 156     if o in ("-u", "--user"):
 157         user = a
 158     if o in ("-p", "--pass"):
 159         password = a
 160     if o in ("-P", "--proto"):
 161         proto = a
 162     if o in ("-w", "--write"):
 163         write_image = 1
 164     if o in ("-v", "--verbose"):
 165         verbose = 1
 166
 167 # make sure we have enough arguments
 168 if len(args) > 0:
 169     HOST = args[0]
 170
 171 if len(args) == 2:
 172     imagefile = args[1]
 173
 174 ####################
 175 # create a telnet session to the router
 176 try:
 177     tn = telnetlib.Telnet(HOST)
 178 except socket.error, msg:
 179     print "Unable to establish telnet session to %s: %s" % (HOST, msg)
 180     sys.exit(1)
 181
 182 tn.set_option_negotiation_callback(telnet_option)
 183
 184 buf = tn.read_until("Username: ", 3)
 185 if not buf:
 186     telnet_timeout()
 187 tn.write(user+"\n")
 188 if password:
 189     buf = tn.read_until("Password: ", 3)
 190     if not buf:
 191         telnet_timeout()
 192     tn.write(password+"\n")
 193
 194 # wait for prompt
 195 buf = tn.read_until("> ", 3)
 196 if not buf:
 197     telnet_timeout()
 198
 199 get_flash_size()
 200
 201 if not no_dump:
 202     image_dump(tn, dumpfile)
 203
 204 # write image file image
 205 if not server:
 206     server = tn.get_socket().getsockname()[0]
 207 if proto == "http":
 208     cmd = "load -u %s://%s:%d/%s -r 0\n" % (proto, server, PORT, imagefile)
 209 else:
 210     cmd = "load -u %s://%s/%s -r 0\n" % (proto, server, imagefile)
 211 print cmd
 212 if write_image:
 213     if proto == "http":
 214         start_server()
 215
 216     tn.write("unlock 0 0x%x\n" % flashsize)
 217     buf = tn.read_until("Returned 0")
 218
 219     tn.write(cmd)
 220     buf = tn.read_until("Returned 0")
 221
 222 tn.write("exit\n")
 223 tn.close()