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 http)
  19 \t     --port: set port for http (default 8080)
  20 \t-s | --server: IP address of tftp server
  21 \t-w | --write: initiate loading of redboot (default no modification to flash)
  22 \t-q | --quiet: don't display unnecessary information
  23 \t-v | --verbose: display progress information
  24 \t-V | --version: display version information
  25 """
  26
  27 import os
  28 import sys
  29 import getopt
  30 import getpass
  31 import telnetlib
  32 import string
  33 import binascii
  34 import socket
  35 import thread
  36 import SocketServer
  37 import SimpleHTTPServer
  38
  39 server = ""
  40 HOST = "192.168.1.1"
  41 PORT = 8080
  42 user = "admin"
  43 #password = getpass.getpass()
  44 password = "password1"
  45 proto = "http"
  46 imagefile = "redboot.bin"
  47 dumpfile = ""
  48 verbose = 1
  49 no_dump = 0
  50 dumplen = 0x10000
  51 write_image = 0
  52 flashsize=4*1024*1024
  53 #device="br0"
  54 device="ixp0"
  55
  56 ####################
  57
  58 def start_server():
  59     httpd = SocketServer.TCPServer((server,PORT),SimpleHTTPServer.SimpleHTTPRequestHandler)
  60     thread.start_new_thread(httpd.serve_forever,())
  61
  62 ####################
  63
  64 def get_flash_size():
  65     global flashsize
  66     tn.write("cat /proc/mtd\n")
  67     # wait for prompt
  68     buf = tn.read_until("Returned 0", 3)
  69     if buf:
  70         i = buf.find('mtd0:')
  71         if i > 0:
  72             flashsize = int(buf[i+6:].split()[0],16)
  73         else:
  74             print "Can't find mtd0!"
  75     else:
  76         print "Can't access /proc/mtd!"
  77
  78 def image_dump(tn, dumpfile):
  79     if not dumpfile:
  80         tn.write("ver\n");
  81         buf = tn.read_until("Returned 0")
  82         i = buf.find("Platform:")
  83         if i < 0:
  84             platform="jungo"
  85         else:
  86             line=buf[i+9:]
  87             i=line.find('\n')
  88             platform=line[:i].split()[-1]
  89
  90         tn.write("ifconfig -v %s\n" % device);
  91         buf = tn.read_until("Returned 0")
  92
  93         i = buf.find("mac = 0")
  94         if i > 0:
  95             i += 6
  96         else:
  97             print "No MAC address found! (use -f option)"
  98             sys.exit(1)
  99         dumpfile = "%s-%s.bin" % (platform, buf[i:i+17].replace(':',''))
 100     else:
 101         tn.write("\n")
 102
 103     print "Dumping flash contents (%dMB) to %s" % (flashsize/1048576, dumpfile)
 104     f = open(dumpfile, "wb")
 105
 106     t=flashsize/dumplen
 107     for addr in range(t):
 108         if verbose:
 109             sys.stdout.write('\r%d%%'%(100*addr/t))
 110             sys.stdout.flush()
 111
 112         tn.write("flash_dump -r 0x%x -l %d -4\n" % (addr*dumplen, dumplen))
 113         tn.read_until("\n")
 114
 115         count = addr*dumplen
 116         while 1:
 117             buf = tn.read_until("\n")
 118             if buf.strip() == "Returned 0":
 119                 break
 120             s = buf.split()
 121             if s and s[0][-1] == ':':
 122                 a=int(s[0][:-1],16)
 123                 if a != count:
 124                     print "Format error: %x != %x"%(a,count)
 125                     sys.exit(2)
 126                 count += 16
 127                 f.write(binascii.a2b_hex(string.join(s[1:],'')))
 128         tn.read_until(">",1)
 129
 130     f.close()
 131     if verbose:
 132         print ""
 133
 134 def telnet_option(sock,cmd,option):
 135     #print "Option: %d %d" % (ord(cmd), ord(option))
 136     if cmd == telnetlib.DO:
 137         c=telnetlib.WILL
 138     elif cmd == telnetlib.WILL:
 139         c=telnetlib.DO
 140     sock.sendall(telnetlib.IAC + c + option)
 141
 142 def telnet_timeout():
 143     print "Fatal error: telnet timeout!"
 144     sys.exit(1)
 145
 146 def usage():
 147     print __doc__ % os.path.basename(sys.argv[0])
 148
 149 ####################
 150
 151 try:
 152     opts, args = getopt.getopt(sys.argv[1:], "hdf:u:qp:P:s:vVw", \
 153         ["help", "dump", "file=", "user=", "pass=", "proto=", "proto=",
 154          "quiet=", "server=", "verbose", "version", "write"])
 155 except getopt.GetoptError:
 156     # print help information and exit:
 157     usage()
 158     sys.exit(1)
 159
 160 for o, a in opts:
 161     if o in ("-h", "--help"):
 162         usage()
 163         sys.exit(1)
 164     if o in ("-V", "--version"):
 165         print "%s: 0.7" % sys.argv[0]
 166         sys.exit(1)
 167     if o in ("-d", "--no-dump"):
 168         no_dump = 1
 169     if o in ("-f", "--file"):
 170         dumpfile = a
 171     if o in ("-s", "--server"):
 172         server = a
 173     if o in ("-u", "--user"):
 174         user = a
 175     if o in ("-p", "--pass"):
 176         password = a
 177     if o in ("-P", "--proto"):
 178         proto = a
 179     if o in ("--port"):
 180         PORT = a
 181     if o in ("-w", "--write"):
 182         write_image = 1
 183     if o in ("-q", "--quiet"):
 184         verbose = 0
 185     if o in ("-v", "--verbose"):
 186         verbose = 1
 187
 188 # make sure we have enough arguments
 189 if len(args) > 0:
 190     HOST = args[0]
 191
 192 if len(args) == 2:
 193     imagefile = args[1]
 194
 195 ####################
 196 # create a telnet session to the router
 197 try:
 198     tn = telnetlib.Telnet(HOST)
 199 except socket.error, msg:
 200     print "Unable to establish telnet session to %s: %s" % (HOST, msg)
 201     sys.exit(1)
 202
 203 tn.set_option_negotiation_callback(telnet_option)
 204
 205 buf = tn.read_until("Username: ", 3)
 206 if not buf:
 207     telnet_timeout()
 208 tn.write(user+"\n")
 209 if password:
 210     buf = tn.read_until("Password: ", 3)
 211     if not buf:
 212         telnet_timeout()
 213     tn.write(password+"\n")
 214
 215 # wait for prompt
 216 buf = tn.read_until("> ", 3)
 217 if not buf:
 218     telnet_timeout()
 219
 220 get_flash_size()
 221
 222 if not no_dump:
 223     image_dump(tn, dumpfile)
 224
 225 if write_image:
 226     if not os.access(imagefile, os.R_OK):
 227         print "File access error: %s" % (imagefile)
 228         sys.exit(3)
 229
 230     splitpath = os.path.split(imagefile)
 231     # make sure we're in the directory where the image is located
 232     if splitpath[0]:
 233         os.chdir(splitpath[0])
 234
 235     # write image file image
 236     if not server:
 237         server = tn.get_socket().getsockname()[0]
 238     if proto == "http":
 239         cmd = "load -u %s://%s:%d/%s -r 0\n" % (proto, server, PORT, splitpath[1])
 240     else:
 241         cmd = "load -u %s://%s/%s -r 0\n" % (proto, server, splitpath[1])
 242
 243     if proto == "http":
 244         start_server()
 245
 246     if verbose:
 247         print "Unlocking flash..."
 248     tn.write("unlock 0 0x%x\n" % flashsize)
 249     buf = tn.read_until("Returned 0")
 250
 251     if verbose:
 252         print "Writing new image..."
 253     print cmd,
 254     tn.write(cmd)
 255     buf = tn.read_until("Returned 0")
 256
 257 tn.write("exit\n")
 258 tn.close()