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apkcerts.py

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#!/usr/bin/env python

import sys

import string

import xml

import xml.dom

from xml.dom import minidom

def getName(codePath):

if codePath.startswith("/system/app"):

return codePath.replace("/system/app/", "")

else :

return ""

def usage():

print "Usage: python ./apkcerts.py path-to-packages.xml path-to-apkcerts.txt"

def main():

if len(sys.argv) != 3:

usage()

sys.exit(1)

try:

xmldoc = minidom.parse(sys.argv[1])

except :

print "Error: %s doesn't exist or isn't a vaild xml file" %(sys.argv[1])

sys.exit(1)

packages = xmldoc.getElementsByTagName("package")

sigpkgs = {}

for pkg in packages:

name = getName(pkg.attributes["codePath"].value)

cert= pkg.getElementsByTagName("cert")

if not cert or not name: continue

index = cert[0].getAttribute("index")

sigpkgs[index] = sigpkgs.get(index, []) + [name]

sharedUsers = xmldoc.getElementsByTagName("shared-user")

sigmap = {}

for user in sharedUsers:

name = user.getAttribute("name")

cert = user.getElementsByTagName("cert")

if not cert: continue

index = cert[0].getAttribute("index")

if name == "android.uid.system":

sigmap[index] = "platform"

elif name == "android.media":

sigmap[index] = "media"

elif name == "android.uid.shared":

sigmap[index] = "shared"

with open(sys.argv[2], "w") as f:

for keyindex, pkgnames in sigpkgs.items():

sig = sigmap.get(keyindex, None)

for pkgname in pkgnames:

if sig:

line = 'name="{0}" certificate="build/target/product/security/{1}.x509.pem" private_key="build/target/product/security/{1}.pk8"\n'.format(pkgname, sig)

else:

line = 'name="{0}" certificate="PRESIGNED" private_key=""\n'.format(pkgname)

f.write(line)

if "__main__" == __name__:

main()