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Tool to download firmware #9

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Tool to download firmware #9

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38 changes: 38 additions & 0 deletions download_firmware.py
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Original file line number Diff line number Diff line change
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#!/usr/bin/env python
# URI = 'http://pebble-static.s3.amazonaws.com/watchfaces/index.html'
URI = 'http://pebblefw.s3.amazonaws.com/pebble/ev2_4/release/latest.json'

from urllib2 import urlopen
import hashlib
import logging, os.path
import json

if __name__ == "__main__":
log = logging.getLogger()
logging.basicConfig(format='[%(levelname)-8s] %(message)s')
log.setLevel(logging.DEBUG)

log.info("Downloading firmware linked from %s" % URI)

page = urlopen(URI).read()
data = json.loads(page)

firmware = data['normal']['url']
version = data['normal']['friendlyVersion']
sha = data['normal']['sha-256']

log.info("Latest firmware version: %s" % version)
fwfile = firmware[firmware.rindex("/")+1:]
if os.path.exists(fwfile):
log.warn('Did not download "%s" because it would overwrite an existing file' % fwfile)
exit()
with open(fwfile, "wb") as f:
log.info("Downloading %s -> %s" % (firmware, fwfile))
f.write(urlopen(firmware).read())

f = open(fwfile, "rb")
filesha = hashlib.sha256()
filesha.update(f.read())
if(filesha.hexdigest() != sha):
log.error('File download errer: SHA-256 hash mismatch. Please retry.')