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mirror of https://gitlab.com/fdroid/fdroidserver.git synced 2024-11-04 22:40:12 +01:00

Merge branch 'plugin-system' into 'master'

Plugin system

See merge request fdroid/fdroidserver!709
This commit is contained in:
Hans-Christoph Steiner 2020-06-10 17:36:02 +00:00
commit 83edb5b80a
3 changed files with 252 additions and 15 deletions

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@ -1,6 +1,7 @@
#!/usr/bin/env python3
#
# fdroidserver/__main__.py - part of the FDroid server tools
# Copyright (C) 2020 Michael Pöhn <michael.poehn@fsfe.org>
# Copyright (C) 2010-2015, Ciaran Gultnieks, ciaran@ciarang.com
# Copyright (C) 2013-2014 Daniel Marti <mvdan@mvdan.cc>
#
@ -17,9 +18,11 @@
# 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 re
import sys
import os
import locale
import pkgutil
import logging
import fdroidserver.common
@ -29,7 +32,7 @@ from argparse import ArgumentError
from collections import OrderedDict
commands = OrderedDict([
COMMANDS = OrderedDict([
("build", _("Build a package from source")),
("init", _("Quickly start a new repository")),
("publish", _("Sign and place packages in the repo")),
@ -54,25 +57,85 @@ commands = OrderedDict([
])
def print_help():
def print_help(available_plugins=None):
print(_("usage: ") + _("fdroid [<command>] [-h|--help|--version|<args>]"))
print("")
print(_("Valid commands are:"))
for cmd, summary in commands.items():
for cmd, summary in COMMANDS.items():
print(" " + cmd + ' ' * (15 - len(cmd)) + summary)
if available_plugins:
print(_('commands from plugin modules:'))
for command in sorted(available_plugins.keys()):
print(' {:15}{}'.format(command, available_plugins[command]['summary']))
print("")
def preparse_plugin(module_name, module_dir):
"""simple regex based parsing for plugin scripts,
so we don't have to import them when we just need the summary,
but not plan on executing this particular plugin."""
if '.' in module_name:
raise ValueError("No '.' allowed in fdroid plugin modules: '{}'"
.format(module_name))
path = os.path.join(module_dir, module_name + '.py')
if not os.path.isfile(path):
path = os.path.join(module_dir, module_name, '__main__.py')
if not os.path.isfile(path):
raise ValueError("unable to find main plugin script "
"for module '{n}' ('{d}')"
.format(n=module_name,
d=module_dir))
summary = None
main = None
with open(path, 'r', encoding='utf-8') as f:
re_main = re.compile(r'^(\s*def\s+main\s*\(.*\)\s*:'
r'|\s*main\s*=\s*lambda\s*:.+)$')
re_summary = re.compile(r'^\s*fdroid_summary\s*=\s["\'](?P<text>.+)["\']$')
for line in f:
m_summary = re_summary.match(line)
if m_summary:
summary = m_summary.group('text')
if re_main.match(line):
main = True
if summary is None:
raise NameError("could not find 'fdroid_summary' in: '{}' plugin"
.format(module_name))
if main is None:
raise NameError("could not find 'main' function in: '{}' plugin"
.format(module_name))
return {'name': module_name, 'summary': summary}
def find_plugins():
found_plugins = [{'name': x[1], 'dir': x[0].path} for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
plugin_infos = {}
for plugin_def in found_plugins:
command_name = plugin_def['name'][7:]
try:
plugin_infos[command_name] = preparse_plugin(plugin_def['name'],
plugin_def['dir'])
except Exception as e:
# We need to keep module lookup fault tolerant because buggy
# modules must not prevent fdroidserver from functioning
if len(sys.argv) > 1 and sys.argv[1] == command_name:
# only raise exeption when a user specifies the broken
# plugin in explicitly in command line
raise e
return plugin_infos
def main():
available_plugins = find_plugins()
if len(sys.argv) <= 1:
print_help()
print_help(available_plugins=available_plugins)
sys.exit(0)
command = sys.argv[1]
if command not in commands:
if command not in COMMANDS and command not in available_plugins.keys():
if command in ('-h', '--help'):
print_help()
print_help(available_plugins=available_plugins)
sys.exit(0)
elif command == '--version':
output = _('no version info found!')
@ -99,11 +162,11 @@ def main():
else:
from pkg_resources import get_distribution
output = get_distribution('fdroidserver').version + '\n'
print(output),
print(output)
sys.exit(0)
else:
print(_("Command '%s' not recognised.\n" % command))
print_help()
print_help(available_plugins=available_plugins)
sys.exit(1)
verbose = any(s in sys.argv for s in ['-v', '--verbose'])
@ -133,7 +196,10 @@ def main():
sys.argv[0] += ' ' + command
del sys.argv[1]
mod = __import__('fdroidserver.' + command, None, None, [command])
if command in COMMANDS.keys():
mod = __import__('fdroidserver.' + command, None, None, [command])
else:
mod = __import__(available_plugins[command]['name'], None, None, [command])
system_langcode, system_encoding = locale.getdefaultlocale()
if system_encoding is None or system_encoding.lower() not in ('utf-8', 'utf8'):

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@ -4,8 +4,12 @@ import inspect
import optparse
import os
import sys
import pkgutil
import textwrap
import unittest
import tempfile
from unittest import mock
from testcommon import TmpCwd, TmpPyPath
localmodule = os.path.realpath(
os.path.join(os.path.dirname(inspect.getfile(inspect.currentframe())), '..'))
@ -17,12 +21,12 @@ from fdroidserver import common
import fdroidserver.__main__
class FdroidTest(unittest.TestCase):
class MainTest(unittest.TestCase):
'''this tests fdroid.py'''
def test_commands(self):
def test_COMMANDS_check(self):
"""make sure the built in sub-command defs didn't change unintentionally"""
self.assertListEqual([x for x in fdroidserver.__main__.commands.keys()],
self.assertListEqual([x for x in fdroidserver.__main__.COMMANDS.keys()],
['build',
'init',
'publish',
@ -49,18 +53,169 @@ class FdroidTest(unittest.TestCase):
co = mock.Mock()
with mock.patch('sys.argv', ['', 'init', '-h']):
with mock.patch('fdroidserver.init.main', co):
with mock.patch('sys.exit', lambda x: None):
with mock.patch('sys.exit') as exit_mock:
fdroidserver.__main__.main()
# note: this is sloppy, if `init` changes
# this might need changing too
exit_mock.assert_called_once_with(0)
co.assert_called_once_with()
def test_call_deploy(self):
co = mock.Mock()
with mock.patch('sys.argv', ['', 'deploy', '-h']):
with mock.patch('fdroidserver.server.main', co):
with mock.patch('sys.exit', lambda x: None):
with mock.patch('sys.exit') as exit_mock:
fdroidserver.__main__.main()
# note: this is sloppy, if `deploy` changes
# this might need changing too
exit_mock.assert_called_once_with(0)
co.assert_called_once_with()
def test_find_plugins(self):
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy1.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
main = lambda: 'all good'"""))
with TmpPyPath(tmpdir):
plugins = fdroidserver.__main__.find_plugins()
self.assertIn('testy1', plugins.keys())
self.assertEqual(plugins['testy1']['summary'], 'ttt')
self.assertEqual(__import__(plugins['testy1']['name'],
None,
None,
['testy1'])
.main(),
'all good')
def test_main_plugin_lambda(self):
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy2.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
main = lambda: print('all good')"""))
with TmpPyPath(tmpdir):
with mock.patch('sys.argv', ['', 'testy2']):
with mock.patch('sys.exit') as exit_mock:
fdroidserver.__main__.main()
exit_mock.assert_called_once_with(0)
def test_main_plugin_def(self):
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy3.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
def main():
print('all good')"""))
with TmpPyPath(tmpdir):
with mock.patch('sys.argv', ['', 'testy3']):
with mock.patch('sys.exit') as exit_mock:
fdroidserver.__main__.main()
exit_mock.assert_called_once_with(0)
def test_main_broken_plugin(self):
"""making sure broken plugins get their exceptions through"""
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy4.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
def main():
raise Exception("this plugin is broken")"""))
with TmpPyPath(tmpdir):
with mock.patch('sys.argv', ['', 'testy4']):
with self.assertRaisesRegex(Exception, "this plugin is broken"):
fdroidserver.__main__.main()
def test_main_malicious_plugin(self):
"""The purpose of this test is to make sure code in plugins
doesn't get executed unintentionally.
"""
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy5.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
raise Exception("this plugin is malicious")
def main():
print("evil things")"""))
with TmpPyPath(tmpdir):
with mock.patch('sys.argv', ['', 'lint']):
with mock.patch('sys.exit') as exit_mock:
fdroidserver.__main__.main()
# note: this is sloppy, if `lint` changes
# this might need changing too
exit_mock.assert_called_once_with(0)
def test_main_prevent_plugin_override(self):
"""making sure build-in subcommands cannot be overridden by plugins
"""
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_signatures.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
def main():
raise("plugin overrides don't get prevent!")"""))
with TmpPyPath(tmpdir):
with mock.patch('sys.argv', ['', 'signatures']):
with mock.patch('sys.exit') as exit_mock:
fdroidserver.__main__.main()
# note: this is sloppy, if `signatures` changes
# this might need changing too
self.assertEqual(exit_mock.call_count, 2)
def test_preparse_plugin_lookup_bad_name(self):
self.assertRaises(ValueError,
fdroidserver.__main__.preparse_plugin,
"some.package", "/non/existent/module/path")
def test_preparse_plugin_lookup_bad_path(self):
self.assertRaises(ValueError,
fdroidserver.__main__.preparse_plugin,
"fake_module_name", "/non/existent/module/path")
def test_preparse_plugin_lookup_summary_missing(self):
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy6.py', 'w') as f:
f.write(textwrap.dedent("""\
main = lambda: print('all good')"""))
with TmpPyPath(tmpdir):
p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
module_dir = p[0][0].path
module_name = p[0][1]
self.assertRaises(NameError,
fdroidserver.__main__.preparse_plugin,
module_name, module_dir)
def test_preparse_plugin_lookup_module_file(self):
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
with open('fdroid_testy7.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
main = lambda: pritn('all good')"""))
with TmpPyPath(tmpdir):
p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
module_path = p[0][0].path
module_name = p[0][1]
d = fdroidserver.__main__.preparse_plugin(module_name, module_path)
self.assertDictEqual(d, {'name': 'fdroid_testy7',
'summary': 'ttt'})
def test_preparse_plugin_lookup_module_dir(self):
with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
os.mkdir(os.path.join(tmpdir, 'fdroid_testy8'))
with open('fdroid_testy8/__main__.py', 'w') as f:
f.write(textwrap.dedent("""\
fdroid_summary = "ttt"
main = lambda: print('all good')"""))
with open('fdroid_testy8/__init__.py', 'w') as f:
pass
with TmpPyPath(tmpdir):
p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
module_path = p[0][0].path
module_name = p[0][1]
d = fdroidserver.__main__.preparse_plugin(module_name, module_path)
self.assertDictEqual(d, {'name': 'fdroid_testy8',
'summary': 'ttt'})
if __name__ == "__main__":
os.chdir(os.path.dirname(__file__))
@ -71,5 +226,5 @@ if __name__ == "__main__":
(common.options, args) = parser.parse_args(['--verbose'])
newSuite = unittest.TestSuite()
newSuite.addTest(unittest.makeSuite(FdroidTest))
newSuite.addTest(unittest.makeSuite(MainTest))
unittest.main(failfast=False)

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@ -16,6 +16,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import sys
class TmpCwd():
@ -32,3 +33,18 @@ class TmpCwd():
def __exit__(self, a, b, c):
os.chdir(self.orig_cwd)
class TmpPyPath():
"""Context-manager for temporarily changing the current working
directory.
"""
def __init__(self, additional_path):
self.additional_path = additional_path
def __enter__(self):
sys.path.append(self.additional_path)
def __exit__(self, a, b, c):
sys.path.remove(self.additional_path)