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mirror of https://gitlab.com/fdroid/fdroidserver.git synced 2024-11-14 02:50:12 +01:00
fdroidserver/fdroidserver/scanner.py
Hans-Christoph Steiner 6c2cf2ccdd convert internal dict keys to match fdroidclient's Apk class
This syncs up the field names between the fdroiddata .yml files, the keys
used in the implementation in fdroidserver, the index data format, and the
final data structures in fdroidclient.  This makes it easier for devs to
follow, and makes the Jackson parsing library automatically handle
converting the data from the index file to Java instances.

This bumps the metadata version since the apkcache will have to be
discarded.

Here are the name changes:
* apkname --> apkName
* id --> packageName
* sha256 --> hash
* version --> versionName
* versioncode --> versionCode

tests/repo/index.xml was changed only to bump the metadata version
from 17 to 18.
2017-03-17 13:55:40 +01:00

333 lines
11 KiB
Python

#!/usr/bin/env python3
#
# scanner.py - part of the FDroid server tools
# Copyright (C) 2010-13, 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 os
import re
import traceback
from argparse import ArgumentParser
import logging
from . import common
from . import metadata
from .common import BuildException, VCSException
config = None
options = None
def get_gradle_compile_commands(build):
compileCommands = ['compile', 'releaseCompile']
if build.gradle and build.gradle != ['yes']:
compileCommands += [flavor + 'Compile' for flavor in build.gradle]
compileCommands += [flavor + 'ReleaseCompile' for flavor in build.gradle]
return [re.compile(r'\s*' + c, re.IGNORECASE) for c in compileCommands]
# Scan the source code in the given directory (and all subdirectories)
# and return the number of fatal problems encountered
def scan_source(build_dir, root_dir, build):
count = 0
# Common known non-free blobs (always lower case):
usual_suspects = {
exp: re.compile(r'.*' + exp, re.IGNORECASE) for exp in [
r'flurryagent',
r'paypal.*mpl',
r'google.*analytics',
r'admob.*sdk.*android',
r'google.*ad.*view',
r'google.*admob',
r'google.*play.*services',
r'crittercism',
r'heyzap',
r'jpct.*ae',
r'youtube.*android.*player.*api',
r'bugsense',
r'crashlytics',
r'ouya.*sdk',
r'libspen23',
r'firebase',
]
}
def suspects_found(s):
for n, r in usual_suspects.items():
if r.match(s):
yield n
gradle_mavenrepo = re.compile(r'maven *{ *(url)? *[\'"]?([^ \'"]*)[\'"]?')
allowed_repos = [re.compile(r'^https?://' + re.escape(repo) + r'/*') for repo in [
'repo1.maven.org/maven2', # mavenCentral()
'jcenter.bintray.com', # jcenter()
'jitpack.io',
'repo.maven.apache.org/maven2',
'oss.jfrog.org/artifactory/oss-snapshot-local',
'oss.sonatype.org/content/repositories/snapshots',
'oss.sonatype.org/content/repositories/releases',
'oss.sonatype.org/content/groups/public',
'clojars.org/repo', # Clojure free software libs
's3.amazonaws.com/repo.commonsware.com', # CommonsWare
'plugins.gradle.org/m2', # Gradle plugin repo
]
]
scanignore = common.getpaths_map(build_dir, build.scanignore)
scandelete = common.getpaths_map(build_dir, build.scandelete)
scanignore_worked = set()
scandelete_worked = set()
def toignore(fd):
for k, paths in scanignore.items():
for p in paths:
if fd.startswith(p):
scanignore_worked.add(k)
return True
return False
def todelete(fd):
for k, paths in scandelete.items():
for p in paths:
if fd.startswith(p):
scandelete_worked.add(k)
return True
return False
def ignoreproblem(what, fd, fp):
logging.info('Ignoring %s at %s' % (what, fd))
return 0
def removeproblem(what, fd, fp):
logging.info('Removing %s at %s' % (what, fd))
os.remove(fp)
return 0
def warnproblem(what, fd):
if toignore(fd):
return
logging.warn('Found %s at %s' % (what, fd))
def handleproblem(what, fd, fp):
if toignore(fd):
return ignoreproblem(what, fd, fp)
if todelete(fd):
return removeproblem(what, fd, fp)
logging.error('Found %s at %s' % (what, fd))
return 1
def is_executable(path):
return os.path.exists(path) and os.access(path, os.X_OK)
textchars = bytearray({7, 8, 9, 10, 12, 13, 27} | set(range(0x20, 0x100)) - {0x7f})
def is_binary(path):
d = None
with open(path, 'rb') as f:
d = f.read(1024)
return bool(d.translate(None, textchars))
# False positives patterns for files that are binary and executable.
safe_paths = [re.compile(r) for r in [
r".*/drawable[^/]*/.*\.png$", # png drawables
r".*/mipmap[^/]*/.*\.png$", # png mipmaps
]
]
def safe_path(path):
for sp in safe_paths:
if sp.match(path):
return True
return False
gradle_compile_commands = get_gradle_compile_commands(build)
def is_used_by_gradle(line):
return any(command.match(line) for command in gradle_compile_commands)
# Iterate through all files in the source code
for r, d, f in os.walk(build_dir, topdown=True):
# It's topdown, so checking the basename is enough
for ignoredir in ('.hg', '.git', '.svn', '.bzr'):
if ignoredir in d:
d.remove(ignoredir)
for curfile in f:
if curfile in ['.DS_Store']:
continue
# Path (relative) to the file
fp = os.path.join(r, curfile)
if os.path.islink(fp):
continue
fd = fp[len(build_dir) + 1:]
_, ext = common.get_extension(fd)
if ext == 'so':
count += handleproblem('shared library', fd, fp)
elif ext == 'a':
count += handleproblem('static library', fd, fp)
elif ext == 'class':
count += handleproblem('Java compiled class', fd, fp)
elif ext == 'apk':
removeproblem('APK file', fd, fp)
elif ext == 'jar':
for name in suspects_found(curfile):
count += handleproblem('usual supect \'%s\'' % name, fd, fp)
warnproblem('JAR file', fd)
elif ext == 'java':
if not os.path.isfile(fp):
continue
with open(fp, 'r', encoding='utf8', errors='replace') as f:
for line in f:
if 'DexClassLoader' in line:
count += handleproblem('DexClassLoader', fd, fp)
break
elif ext == 'gradle':
if not os.path.isfile(fp):
continue
with open(fp, 'r', encoding='utf8', errors='replace') as f:
lines = f.readlines()
for i, line in enumerate(lines):
if is_used_by_gradle(line):
for name in suspects_found(line):
count += handleproblem('usual supect \'%s\' at line %d' % (name, i + 1), fd, fp)
noncomment_lines = [l for l in lines if not common.gradle_comment.match(l)]
joined = re.sub(r'[\n\r\s]+', ' ', ' '.join(noncomment_lines))
for m in gradle_mavenrepo.finditer(joined):
url = m.group(2)
if not any(r.match(url) for r in allowed_repos):
count += handleproblem('unknown maven repo \'%s\'' % url, fd, fp)
elif ext in ['', 'bin', 'out', 'exe']:
if is_binary(fp):
count += handleproblem('binary', fd, fp)
elif is_executable(fp):
if is_binary(fp) and not safe_path(fd):
warnproblem('possible binary', fd)
for p in scanignore:
if p not in scanignore_worked:
logging.error('Unused scanignore path: %s' % p)
count += 1
for p in scandelete:
if p not in scandelete_worked:
logging.error('Unused scandelete path: %s' % p)
count += 1
return count
def main():
global config, options
# Parse command line...
parser = ArgumentParser(usage="%(prog)s [options] [APPID[:VERCODE] [APPID[:VERCODE] ...]]")
common.setup_global_opts(parser)
parser.add_argument("appid", nargs='*', help="app-id with optional versionCode in the form APPID[:VERCODE]")
metadata.add_metadata_arguments(parser)
options = parser.parse_args()
metadata.warnings_action = options.W
config = common.read_config(options)
# Read all app and srclib metadata
allapps = metadata.read_metadata()
apps = common.read_app_args(options.appid, allapps, True)
probcount = 0
build_dir = 'build'
if not os.path.isdir(build_dir):
logging.info("Creating build directory")
os.makedirs(build_dir)
srclib_dir = os.path.join(build_dir, 'srclib')
extlib_dir = os.path.join(build_dir, 'extlib')
for appid, app in apps.items():
if app.Disabled:
logging.info("Skipping %s: disabled" % appid)
continue
if not app.builds:
logging.info("Skipping %s: no builds specified" % appid)
continue
logging.info("Processing " + appid)
try:
if app.RepoType == 'srclib':
build_dir = os.path.join('build', 'srclib', app.Repo)
else:
build_dir = os.path.join('build', appid)
# Set up vcs interface and make sure we have the latest code...
vcs = common.getvcs(app.RepoType, app.Repo, build_dir)
for build in app.builds:
if build.disable:
logging.info("...skipping version %s - %s" % (
build.versionName, build.get('disable', build.commit[1:])))
else:
logging.info("...scanning version " + build.versionName)
# Prepare the source code...
root_dir, _ = common.prepare_source(vcs, app, build,
build_dir, srclib_dir,
extlib_dir, False)
# Do the scan...
count = scan_source(build_dir, root_dir, build)
if count > 0:
logging.warn('Scanner found %d problems in %s (%s)' % (
count, appid, build.versionCode))
probcount += count
except BuildException as be:
logging.warn("Could not scan app %s due to BuildException: %s" % (
appid, be))
probcount += 1
except VCSException as vcse:
logging.warn("VCS error while scanning app %s: %s" % (appid, vcse))
probcount += 1
except Exception:
logging.warn("Could not scan app %s due to unknown error: %s" % (
appid, traceback.format_exc()))
probcount += 1
logging.info("Finished:")
print("%d problems found" % probcount)
if __name__ == "__main__":
main()