def failed(why):
sys.stderr.write("Failed %s\n" % why)
systemwide_lock.release_lock()
sys.exit(1)
def failed(why):
sys.stderr.write("Failed %s\n" % why)
systemwide_lock.release_lock()
sys.exit(1)
if not systemwide_lock.get_lock():
failed("to acquire update lock")
u = Updater()
print "Getting update metadata..."
if not u.get_manifest():
failed("to download update metadata")
print u.purported_manifest
print "Validating update signature..."
if not u.parse_manifest(): # includes signature validity checking
failed("to validate signature of update metdata")
print "Checking whether to update..."
if advise_only:
# In this case, the update script is being run merely to check
# and inform the user whether an update is available, not to
# install it.
systemwide_lock.release_lock()
if u.is_newer():
print "An update is available."
sys.exit(0)
else:
print "No installable update is available."
sys.exit(1)
if u.is_newer():
print "Downloading new firmware image..."
if not u.download_file():
failed("to download firmware image")
print "Validating downloaded image..."
if u.valid_firmware():
print "Installing image..."
if not u.do_update():
failed("to install update")
print "Validating update signature..."
if not u.parse_manifest(): # includes signature validity checking
failed("to validate signature of update metdata")
print "Checking whether to update..."
if advise_only:
# In this case, the update script is being run merely to check
# and inform the user whether an update is available, not to
# install it.
# Store the current time (in Javascript format) in the
# file that tracks when we last checked for updates.
if u.is_newer():
print "Updating " + update_check_file + " to indicate update is available."
with open(update_check_file, "w") as f:
f.write(repr(time.time()*1000) + " Y")
systemwide_lock.release_lock()
sys.exit(0)
else:
print "Updating " + update_check_file + " to indicate no installable update available."
with open(update_check_file, "w") as f:
f.write(repr(time.time()*1000) + " N")
systemwide_lock.release_lock()
sys.exit(1)
if u.is_newer():
print "Updating " + update_check_file + " to indicate update is available."
with open(update_check_file, "w") as f:
f.write(repr(time.time()*1000) + " Y")
print "Downloading new firmware image..."
if not u.download_file():
failed("to download firmware image")
print "Validating downloaded image..."
