mirror of
https://gitlab.com/fdroid/fdroidserver.git
synced 2024-11-13 02:30:11 +01:00
plugin system: regex instead of import bases plugin parsing
This commit is contained in:
Michael Pöhn
parent
b257a3411a
commit
77167e098e
@ -18,12 +18,12 @@
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import re
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import sys
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import os
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import locale
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import pkgutil
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import logging
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import importlib
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import fdroidserver.common
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import fdroidserver.metadata
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@ -70,16 +70,51 @@ def print_help(fdroid_modules=None):
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print("")
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def preparse_plugin(module_name, module_dir):
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"""simple regex based parsing for plugin scripts,
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so we don't have to import them when we just need the summary,
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but not plan on executing this particular plugin."""
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if '.' in module_name:
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raise ValueError("No '.' allowed in fdroid plugin modules: '{}'"
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.format(module_name))
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path = os.path.join(module_dir, module_name + '.py')
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if not os.path.isfile(path):
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path = os.path.join(module_dir, module_name, '__main__.py')
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if not os.path.isfile(path):
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raise ValueError("unable to find main plugin script "
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"for module '{n}' ('{d}')"
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.format(n=module_name,
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d=module_dir))
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summary = None
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main = None
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with open(path, 'r', encoding='utf-8') as f:
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re_main = re.compile(r'^(\s*def\s+main\s*\(.*\)\s*:'
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r'|\s*main\s*=\s*lambda\s*:.+)$')
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re_summary = re.compile(r'^\s*fdroid_summary\s*=\s["\'](?P<text>.+)["\']$')
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for line in f:
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m_summary = re_summary.match(line)
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if m_summary:
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summary = m_summary.group('text')
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if re_main.match(line):
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main = True
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if summary is None:
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raise NameError("could not find 'fdroid_summary' in: '{}' plugin"
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.format(module_name))
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if main is None:
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raise NameError("could not find 'main' function in: '{}' plugin"
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.format(module_name))
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return {'name': module_name, 'summary': summary}
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def find_plugins():
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fdroid_modules = [x[1] for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
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found_plugins = [{'name': x[1], 'dir': x[0].path} for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
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commands = {}
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for module_name in fdroid_modules:
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command_name = module_name[7:]
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for plugin_def in found_plugins:
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command_name = plugin_def['name'][7:]
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try:
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module = importlib.import_module(module_name)
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if hasattr(module, 'fdroid_summary') and hasattr(module, 'main'):
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commands[command_name] = {'summary': module.fdroid_summary,
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'module': module}
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commands[command_name] = preparse_plugin(plugin_def['name'],
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plugin_def['dir'])
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except Exception as e:
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# We need to keep module lookup fault tolerant because buggy
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# modules must not prevent fdroidserver from functioning
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@ -164,7 +199,7 @@ def main():
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if command in commands.keys():
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mod = __import__('fdroidserver.' + command, None, None, [command])
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else:
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mod = fdroid_modules[command]['module']
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mod = __import__(fdroid_modules[command]['name'], None, None, [command])
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system_langcode, system_encoding = locale.getdefaultlocale()
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if system_encoding is None or system_encoding.lower() not in ('utf-8', 'utf8'):
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@ -4,6 +4,7 @@ import inspect
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import optparse
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import os
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import sys
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import pkgutil
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import textwrap
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import unittest
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import tempfile
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@ -74,24 +75,94 @@ class MainTest(unittest.TestCase):
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main = lambda: 'all good'"""))
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with TmpPyPath(tmpdir):
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plugins = fdroidserver.__main__.find_plugins()
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self.assertIn('testy', plugins.keys())
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self.assertEqual(plugins['testy']['summary'], 'ttt')
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self.assertEqual(plugins['testy']['module'].main(), 'all good')
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self.assertIn('testy', plugins.keys())
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self.assertEqual(plugins['testy']['summary'], 'ttt')
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self.assertEqual(__import__(plugins['testy']['name'],
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None,
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None,
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['testy'])
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.main(),
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'all good')
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def test_main_plugin(self):
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def test_main_plugin_lambda(self):
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with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
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with open('fdroid_testy.py', 'w') as f:
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f.write(textwrap.dedent("""\
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fdroid_summary = "ttt"
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main = lambda: pritn('all good')"""))
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test_path = sys.path.copy()
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test_path.append(tmpdir)
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with mock.patch('sys.path', test_path):
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with TmpPyPath(tmpdir):
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with mock.patch('sys.argv', ['', 'testy']):
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with mock.patch('sys.exit') as exit_mock:
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fdroidserver.__main__.main()
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exit_mock.assert_called_once_with(0)
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def test_main_plugin_def(self):
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with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
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with open('fdroid_testy.py', 'w') as f:
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f.write(textwrap.dedent("""\
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fdroid_summary = "ttt"
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def main():
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pritn('all good')"""))
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with TmpPyPath(tmpdir):
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with mock.patch('sys.argv', ['', 'testy']):
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with mock.patch('sys.exit') as exit_mock:
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fdroidserver.__main__.main()
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exit_mock.assert_called_once_with(0)
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def test_preparse_plugin_lookup_bad_name(self):
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self.assertRaises(ValueError,
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fdroidserver.__main__.preparse_plugin,
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"some.package", "/non/existent/module/path")
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def test_preparse_plugin_lookup_bad_path(self):
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self.assertRaises(ValueError,
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fdroidserver.__main__.preparse_plugin,
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"fake_module_name", "/non/existent/module/path")
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def test_preparse_plugin_lookup_summary_missing(self):
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with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
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with open('fdroid_testy.py', 'w') as f:
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f.write(textwrap.dedent("""\
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main = lambda: print('all good')"""))
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with TmpPyPath(tmpdir):
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p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
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module_dir = p[0][0].path
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module_name = p[0][1]
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self.assertRaises(NameError,
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fdroidserver.__main__.preparse_plugin,
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module_name, module_dir)
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def test_preparse_plugin_lookup_module_file(self):
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with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
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with open('fdroid_testy.py', 'w') as f:
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f.write(textwrap.dedent("""\
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fdroid_summary = "ttt"
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main = lambda: pritn('all good')"""))
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with TmpPyPath(tmpdir):
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p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
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module_path = p[0][0].path
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module_name = p[0][1]
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d = fdroidserver.__main__.preparse_plugin(module_name, module_path)
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self.assertDictEqual(d, {'name': 'fdroid_testy',
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'summary': 'ttt'})
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def test_preparse_plugin_lookup_module_dir(self):
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with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
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os.mkdir(os.path.join(tmpdir, 'fdroid_testy'))
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with open('fdroid_testy/__main__.py', 'w') as f:
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f.write(textwrap.dedent("""\
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fdroid_summary = "ttt"
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main = lambda: print('all good')"""))
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with open('fdroid_testy/__init__.py', 'w') as f:
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pass
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with TmpPyPath(tmpdir):
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p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
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module_path = p[0][0].path
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module_name = p[0][1]
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d = fdroidserver.__main__.preparse_plugin(module_name, module_path)
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self.assertDictEqual(d, {'name': 'fdroid_testy',
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'summary': 'ttt'})
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if __name__ == "__main__":
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os.chdir(os.path.dirname(__file__))
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