Initial push.
diff --git a/tools/apk-masseur.py b/tools/apk-masseur.py
new file mode 100755
index 0000000..b0c990f
--- /dev/null
+++ b/tools/apk-masseur.py
@@ -0,0 +1,108 @@
+#!/usr/bin/env python
+# Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+import glob
+import optparse
+import os
+import shutil
+import subprocess
+import sys
+import utils
+
+USAGE = 'usage: %prog [options] <apk>'
+
+def parse_options():
+ parser = optparse.OptionParser(usage=USAGE)
+ parser.add_option('--dex',
+ help='directory with dex files to use instead of those in the apk',
+ default=None)
+ parser.add_option('--out',
+ help='output file (default ./$(basename <apk>))',
+ default=None)
+ parser.add_option('--keystore',
+ help='keystore file (default ~/.android/app.keystore)',
+ default=None)
+ (options, args) = parser.parse_args()
+ if len(args) != 1:
+ parser.error('Expected <apk> argument, got: ' + ' '.join(args))
+ apk = args[0]
+ if not options.out:
+ options.out = os.path.basename(apk)
+ if not options.keystore:
+ options.keystore = findKeystore()
+ return (options, apk)
+
+def findKeystore():
+ return os.path.join(os.getenv('HOME'), '.android', 'app.keystore')
+
+def repack(processed_out, original_apk, temp):
+ processed_apk = os.path.join(temp, 'processed.apk')
+ shutil.copyfile(original_apk, processed_apk)
+ if not processed_out:
+ print 'Using original APK as is'
+ return processed_apk
+ print 'Repacking APK with dex files from', processed_apk
+ with utils.ChangedWorkingDirectory(temp):
+ cmd = ['zip', '-d', 'processed.apk', '*.dex']
+ utils.PrintCmd(cmd)
+ subprocess.check_call(cmd)
+ if processed_out.endswith('.zip') or processed_out.endswith('.jar'):
+ cmd = ['unzip', processed_out, '-d', temp]
+ utils.PrintCmd(cmd)
+ subprocess.check_call(cmd)
+ processed_out = temp
+ with utils.ChangedWorkingDirectory(processed_out):
+ dex = glob.glob('*.dex')
+ cmd = ['zip', '-u', '-9', processed_apk] + dex
+ utils.PrintCmd(cmd)
+ subprocess.check_call(cmd)
+ return processed_apk
+
+def sign(unsigned_apk, keystore, temp):
+ print 'Signing (ignore the warnings)'
+ cmd = ['zip', '-d', unsigned_apk, 'META-INF/*']
+ utils.PrintCmd(cmd)
+ subprocess.call(cmd)
+ signed_apk = os.path.join(temp, 'unaligned.apk')
+ cmd = [
+ 'jarsigner',
+ '-sigalg', 'SHA1withRSA',
+ '-digestalg', 'SHA1',
+ '-keystore', keystore,
+ '-storepass', 'android',
+ '-signedjar', signed_apk,
+ unsigned_apk,
+ 'androiddebugkey'
+ ]
+ utils.PrintCmd(cmd)
+ subprocess.check_call(cmd)
+ return signed_apk
+
+def align(signed_apk, temp):
+ print 'Aligning'
+ aligned_apk = os.path.join(temp, 'aligned.apk')
+ cmd = ['zipalign', '-f', '4', signed_apk, aligned_apk]
+ print ' '.join(cmd)
+ subprocess.check_call(cmd)
+ return signed_apk
+
+def main():
+ (options, apk) = parse_options()
+ with utils.TempDir() as temp:
+ processed_apk = None
+ if options.dex:
+ processed_apk = repack(options.dex, apk, temp)
+ else:
+ print 'Signing original APK without modifying dex files'
+ processed_apk = os.path.join(temp, 'processed.apk')
+ shutil.copyfile(apk, processed_apk)
+ signed_apk = sign(processed_apk, options.keystore, temp)
+ aligned_apk = align(signed_apk, temp)
+ print 'Writing result to', options.out
+ shutil.copyfile(aligned_apk, options.out)
+ return 0
+
+if __name__ == '__main__':
+ sys.exit(main())
