#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# scanner.py - part of the FDroid server tools
# Copyright (C) 2010-12, Ciaran Gultnieks, ciaran@ciarang.com
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import sys
import os
import shutil
import re
import urllib
import time
import subprocess
from optparse import OptionParser
import HTMLParser
import common
from common import BuildException
from common import VCSException

#Read configuration...
execfile('config.py')


# Parse command line...
parser = OptionParser()
parser.add_option("-v", "--verbose", action="store_true", default=False,
                  help="Spew out even more information than normal")
(options, args) = parser.parse_args()

# Get all apps...
apps = common.read_metadata(options.verbose)

html_parser = HTMLParser.HTMLParser()

problems = []

for app in apps:

    if app['disabled']:
        print "Skipping %s: disabled" % app['id']
    elif not app['builds']:
        print "Skipping %s: no builds specified" % app['id']

    if (app['disabled'] is None and app['repo'] != '' 
            and app['repotype'] != '' and len(app['builds']) > 0):

        print "Processing " + app['id']

        try:

            build_dir = 'build/' + app['id']

            # Set up vcs interface and make sure we have the latest code...
            vcs = common.getvcs(app['repotype'], app['repo'], build_dir)

            refreshed_source = False


            for thisbuild in app['builds']:

                if thisbuild['commit'].startswith('!'):
                    print ("..skipping version " + thisbuild['version'] + " - " +
                            thisbuild['commit'][1:])
                else:
                    print "..scanning version " + thisbuild['version']

                    # Prepare the source code...
                    root_dir = common.prepare_source(vcs, app, thisbuild,
                            build_dir, sdk_path, ndk_path,
                            not refreshed_source)
                    refreshed_source = True

                    # Scan for common known non-free blobs:
                    usual_suspects = ['flurryagent.jar', 'paypal_mpl.jar']
                    for r,d,f in os.walk(build_dir):
                        for curfile in f:
                            if curfile.lower() in usual_suspects:
                                msg = 'Found probable non-free blob ' + os.path.join(r,file)
                                msg += ' in ' + app['id'] + ' ' + thisbuild['version']
                                problems.append(msg)

        except BuildException as be:
            msg = "Could not scan app %s due to BuildException: %s" % (app['id'], be)
            problems.append(msg)
        except VCSException as vcse:
            msg = "VCS error while scanning app %s: %s" % (app['id'], vcse)
            problems.append(msg)
        except Exception as e:
            msg = "Could not scan app %s due to unknown error: %s" % (app['id'], e)
            problems.append(msg)

print "Finished:"
for problem in problems:
    print problem
print str(len(problems)) + ' problems.'