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* auto bumps boot and recovery images * to enable for your variant, set TARGET_REQUIRES_BUMP in BoardConfig Change-Id: Ib04dda56564c8b89f9c24a75ef5dffc43073b063
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| #!/usr/bin/env python | ||
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| ################################################## | ||
| # # | ||
| # BUMP! Script # | ||
| # # | ||
| # Leverages codefi.re's web api to # | ||
| # automatically bump your images! # | ||
| # # | ||
| # Usage: # | ||
| # bump.py <image_file> [api_key] # | ||
| # # | ||
| # You can obtain an api key by creating a free # | ||
| # account at http://apps.codefi.re/bump # | ||
| # # | ||
| # Alternatively, you may set your environment # | ||
| # variable: CF_BUMP_API_KEY to the key. # | ||
| # (protip: export it in your .bashrc) # | ||
| # # | ||
| ################################################## | ||
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| import binascii | ||
| import hashlib | ||
| import json | ||
| import math | ||
| import os | ||
| import urllib | ||
| import re | ||
| import struct | ||
| import sys | ||
|
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||
| try: | ||
| # For python3 | ||
| import urllib.request | ||
| except ImportError: | ||
| # For python2 | ||
| import imp | ||
| import urllib2 | ||
| urllib = imp.new_module("urllib") | ||
| urllib.request = urllib2 | ||
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| if sys.argv[1] == "-h" or sys.argv[1] == "--help" or sys.argv[1] == "help": | ||
| print "" | ||
| print "Usage: bump.py <image_file> [api_key]" | ||
| print " image_file - <required> path to an image file to bump" | ||
| print " api_key - [optional] api key, if not specified CF_BUMP_API_KEY environment variable will be used" | ||
| print "" | ||
| print "Create an account at: http://apps.codefi.re/bump to get your api key" | ||
| print "" | ||
| sys.exit(0) | ||
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| file_name = sys.argv[1] | ||
| api_key = "" | ||
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| if len(sys.argv) >= 3: | ||
| api_key = sys.argv[2] | ||
| else: | ||
| api_key = os.environ.get("CF_BUMP_API_KEY") | ||
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| if (api_key is None) or (len(api_key) == 0): | ||
| print "No API key specified!" | ||
| print "Go to http://apps.codefi.re/bump sign up and generate an api key." | ||
| print "Then set the environment variable CF_BUMP_API_KEY to that key" | ||
| print " or pass it to this script as the second parameter." | ||
| sys.exit(1) | ||
|
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| def pair_reverse(s): | ||
| n = len(s) / 2 | ||
| fmt = '%dh' % n | ||
| return struct.pack(fmt, *reversed(struct.unpack(fmt, s))) | ||
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| bump_url = "http://apps.codefi.re/bump/api/v1/bump" | ||
| sig_size = 1024 | ||
| file = open(file_name, "a+b") | ||
| actual_size = os.path.getsize(file_name) | ||
| file.seek(36, 0) | ||
| page_size = int(pair_reverse(binascii.b2a_hex(file.read(4))), 16) | ||
| num_pages = actual_size / page_size | ||
|
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| file.seek(8, 0) | ||
| paged_kernel_size = (int(pair_reverse(binascii.b2a_hex(file.read(4))), 16) / page_size) * page_size | ||
|
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| file.seek(16, 0) | ||
| paged_ramdisk_size = (int(pair_reverse(binascii.b2a_hex(file.read(4))), 16) / page_size) * page_size | ||
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| file.seek(24, 0) | ||
| paged_second_size = (int(pair_reverse(binascii.b2a_hex(file.read(4))), 16) / page_size) * page_size | ||
| if paged_second_size <= 0: | ||
| paged_second_size = 0 | ||
|
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| file.seek(40, 0) | ||
| paged_dt_size = (int(pair_reverse(binascii.b2a_hex(file.read(4))), 16) / page_size) * page_size | ||
| if paged_dt_size <= 0: | ||
| paged_dt_size = 0 | ||
|
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| calculated_size = page_size + paged_kernel_size + paged_ramdisk_size + paged_second_size + paged_dt_size | ||
|
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| if calculated_size > actual_size: | ||
| print "%s appears to be invalid. The calculated size is greater than the actual size." % file_name | ||
| file.close() | ||
| sys.exit(1) | ||
| elif actual_size > calculated_size: | ||
| difference = actual_size - calculated_size | ||
| if difference != page_size and difference != (page_size * 2): | ||
| if difference != sig_size and difference != (page_size + sig_size) and difference != (2 * page_size + 1024): | ||
| print "%s appears to be padded. Attempting to remove padding..." % file_name | ||
| print "Beware: this may invalidate your %s" % file_name | ||
| global i | ||
| i = num_pages - 1 | ||
| file.seek(0, 0) | ||
| while i >= 0: | ||
| file.seek(page_size * i, 0) | ||
| data = file.read(page_size) | ||
| data = data.split('\x00')[0] | ||
| if not data: | ||
| file.truncate(page_size * i) | ||
| i = i - 1 | ||
| else: | ||
| break | ||
| else: | ||
| print "%s appears to already be bumped. Bailing out!" % file_name | ||
| sys.exit(1) | ||
|
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| sha1 = hashlib.sha1() | ||
| file.seek(0, 0) | ||
| sha1.update(file.read()) | ||
|
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| request_url = bump_url + "/" + sha1.hexdigest() + "/" + api_key | ||
|
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| response = urllib.request.urlopen(request_url) | ||
| json_data = response.read().decode("utf-8") | ||
| data = json.loads(json_data) | ||
|
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| if data["status"] != "success": | ||
| print "Bump request failed, please try again" | ||
| file.close() | ||
| sys.exit(1) | ||
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| file.write(binascii.a2b_hex(data["bump"])) | ||
| file.close() | ||
|
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| print "%s is now bumped! Happy flashing!" % file_name |
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