#!/usr/bin/python
# -*- coding: utf-8 -*-

from manifest import AndroidManifest
from db import PermsDataBase
from panel import PermsPanel
from pychrysalide import Plugin
from xml.dom import minidom

import re
import zipfile


class AndroPerms(Plugin):
    """List all permissions given to an APK files."""

    def init(self, ref):
        """Initialize the plugin."""

        self._panel = PermsPanel()

        return True


    def get_action(self):
        """Register the plugin for given actions."""

        return Plugin.PGA_DISASS_PROCESS


    def execute_on_binary(self, binary, action):
        """Process once a binary is disassembled."""

        zf = zipfile.ZipFile(binary.get_filename())

        f = zf.open('AndroidManifest.xml', 'r')
        data = f.read()
        f.closed

        manifest = AndroidManifest(data)
        xml = minidom.parseString(manifest.getXML())

        # print
        # print "Permissions for ", binary.get_filename(), " :"
        # print "-------------"
        # print

        plist = []

        for p in xml.getElementsByTagName("uses-permission"):
            plist.append(p.getAttribute("android:name"))
        #     print p.getAttribute("android:name")

        # print

        db = PermsDataBase()
        db.filter_permissions(plist)

        fmt = binary.get_format()
        instrs = binary.get_instructions()
        buf = binary.disassembled_buffer

        pfn = re.compile('<.* ([^ ]*)\(')

        for i in instrs:

            if i.keyword.startswith("invoke"):

                line = buf.find_line_by_addr(i.address)
                text = line.get_text()

                name = pfn.search(text)

                if name != None:

                    resolved = fmt.resolve_relative_routine(i.address)

                    if resolved == None:
                        reladdr = "0x%08x" % i.address
                    else:
                        reladdr = "<%s()+0x%x>" % (resolved[0], resolved[1])

                    db.check_call(i.address, name.group(1), reladdr)

        self._panel.memorize_permissions(binary, db.get_used_permissions())