openwrt/scripts/flashing/jungo-image.py

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#!/usr/bin/env python3
#
# Copyright 2008, 2009 (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> [image.bin | url]
Valid options:
\t-h | --help: usage statement
\t-d | --dump: 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 --port: set port for http (default 8080)
\t-q | --quiet: don't display unnecessary information
\t-r | --reboot: reboot target on successful transfer
\t-V | --version: display version information
If no image (or url) is given, a flash dump is created.
A built-in http server is used when an image file is provided.
"""
import os
import sys
import getopt
import getpass
import telnetlib
import string
import binascii
import socket
import _thread
import socketserver
import http.server
reboot = 0
HOST = "192.168.1.1"
PORT = 8080
user = "admin"
#password = getpass.getpass()
password = "password1"
proto = "http"
url = ""
imagefile = ""
dumpfile = ""
verbose = 1
do_dump = 0
dumplen = 0x10000
flashsize=4*1024*1024
#device="br0"
device="ixp0"
####################
def start_server(server):
httpd = socketserver.TCPServer((server,PORT),http.server.SimpleHTTPRequestHandler)
_thread.start_new_thread(httpd.serve_forever,())
####################
def get_flash_size():
# make sure we don't have an A0 stepping
tn.write("cat /proc/cpuinfo\n")
buf = tn.read_until("Returned 0", 3)
if not buf:
print("Unable to obtain CPU information; make sure to not use A0 stepping!")
elif buf.find('rev 0') > 0:
print("Warning: IXP42x stepping A0 detected!")
if imagefile or url:
print("Error: No linux support for A0 stepping!")
sys.exit(2)
# now get flash size
tn.write("cat /proc/mtd\n")
buf = tn.read_until("Returned 0", 3)
if buf:
i = buf.find('mtd0:')
if i > 0:
return int(buf[i+6:].split()[0],16)
# use different command
tn.write("flash_layout\n")
buf = tn.read_until("Returned 0", 3)
i = buf.rfind('Range ')
if i > 0:
return int(buf[i+17:].split()[0],16)
print("Can't determine flash size!")
else:
print("Unable to obtain flash size!")
sys.exit(2)
def image_dump(tn, dumpfile):
if not dumpfile:
tn.write("ver\n");
buf = tn.read_until("Returned 0",2)
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("rg_conf_print /dev/%s/mac\n" % device);
buf = tn.read_until("Returned 0",3)
i = buf.find("mac(")
if i > 0:
i += 4
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:qp:P:rvV", \
["help", "dump", "file=", "user=", "pass=", "port=",
"quiet=", "reboot", "verbose", "version"])
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)
elif o in ("-V", "--version"):
print("%s: 0.11" % sys.argv[0])
sys.exit(1)
elif o in ("-d", "--no-dump"):
do_dump = 1
elif o in ("-f", "--file"):
dumpfile = a
elif o in ("-u", "--user"):
user = a
elif o in ("-p", "--pass"):
password = a
elif o == "--port":
PORT = int(a)
elif o in ("-q", "--quiet"):
verbose = 0
elif o in ("-r", "--reboot"):
reboot = 1
elif o in ("-v", "--verbose"):
verbose = 1
# make sure we have enough arguments
if len(args) > 0:
HOST = args[0]
if len(args) == 2:
if args[1].split(':')[0] in ("tftp", "http", "ftp"):
url = args[1]
else:
imagefile = args[1]
else:
do_dump = 1;
####################
# create a telnet session to the router
try:
tn = telnetlib.Telnet(HOST)
except socket.error as 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()
flashsize = get_flash_size()
if do_dump:
image_dump(tn, dumpfile)
if imagefile or url:
splitpath = os.path.split(imagefile)
# create load command
if url:
cmd = "load -u %s -r 0\n" % (url)
else:
server = tn.get_socket().getsockname()[0]
cmd = "load -u http://%s:%d/%s -r 0\n" % (server, PORT, splitpath[1])
if not os.access(imagefile, os.R_OK):
print("File access error: %s" % (imagefile))
sys.exit(3)
# make sure we're in the directory where the image is located
if splitpath[0]:
os.chdir(splitpath[0])
start_server(server)
if verbose:
print("Unlocking flash...")
tn.write("unlock 0 0x%x\n" % flashsize)
buf = tn.read_until("Returned 0",5)
if verbose:
print("Writing new image...")
print(cmd, end=' ')
tn.write(cmd)
buf = tn.read_until("Returned 0",10)
# wait till the transfer completed
buf = tn.read_until("Download completed successfully",20)
if buf:
print("Flash update complete!")
if reboot:
tn.write("reboot\n")
print("Rebooting...")
tn.write("exit\n")
tn.close()