ZipImportError: bad local file header?

[Matt Callaghan]

As per #4275 I was trying to test the fix provided by martin_s.

After running

sudo easy_install http://trac-hacks.org/svn/watchlistplugin/0.11

Trac gives the following now when we view the "plugins" tab in the Admin page:

Trac detected an internal error:

ZipImportError: bad local file header in /usr/lib/python2.5/site-packages/TracWatchlistPlugin-0.1-py2.5.egg

Python Traceback

Most recent call last:

    * File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py", line 432, in _dispatch_request
      Code fragment:
       427. try:
       428. if not env and env_error:
       429. raise HTTPInternalError(env_error)
       430. try:
       431. dispatcher = RequestDispatcher(env)
       432. dispatcher.dispatch(req)
       433. except RequestDone:
       434. pass
       435. resp = req._response or []
       436.  
       437. except HTTPException, e:
      Local variables:
      Name	Value
      after 	[u' except RequestDone:', u' pass', u' resp = ...
      before 	[u' try:', u' if not env and env_error:', u' raise ...
      dispatcher 	<trac.web.main.RequestDispatcher object at 0xb51f24c>
      e 	ZipImportError('bad local file header in ...
      env 	<trac.env.Environment object at 0xb12df4c>
      env_error 	None
      exc_info 	(<class 'zipimport.ZipImportError'>, ZipImportError('bad local file header ...
      filename 	'/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py' ...
      frames 	[{'function': '_dispatch_request', 'lines_before': [u' try:', u' ...
      has_admin 	True
      line 	u' dispatcher.dispatch(req)'
      lineno 	431
      message 	u'ZipImportError: bad local file header in ...
      req 	<Request "GET u'/admin/general/plugin'">
      resp 	[]
      tb 	<traceback object at 0xb63111c>
      tb_hide 	None
      traceback 	'Traceback (most recent call last):\n File ...
    * File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py", line 204, in dispatch
      Code fragment:
       199. req.args.get('__FORM_TOKEN') != req.form_token:
       200. raise HTTPBadRequest('Missing or invalid form token. '
       201. 'Do you have cookies enabled?')
       202.  
       203. # Process the request and render the template
       204. resp = chosen_handler.process_request(req)
       205. if resp:
       206. if len(resp) == 2: # Clearsilver
       207. chrome.populate_hdf(req)
       208. template, content_type = \
       209. self._post_process_request(req, *resp)
      Local variables:
      Name	Value
      chosen_handler 	<trac.admin.web_ui.AdminModule object at 0xb51f6ac>
      chrome 	<trac.web.chrome.Chrome object at 0xb648d8c>
      err 	(<class 'zipimport.ZipImportError'>, ZipImportError('bad local file header ...
      handler 	<trac.admin.web_ui.AdminModule object at 0xb51f6ac>
      req 	<Request "GET u'/admin/general/plugin'">
      self 	<trac.web.main.RequestDispatcher object at 0xb51f24c>
    * File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/admin/web_ui.py", line 113, in process_request
      Code fragment:
       108. if not provider:
       109. raise HTTPNotFound(_('Unknown administration panel'))
       110.  
       111. if hasattr(provider, 'render_admin_panel'):
       112. template, data = provider.render_admin_panel(req, cat_id, panel_id,
       113. path_info)
       114.  
       115. else: # support for legacy WebAdmin panels
       116. data = {}
       117. cstmpl, ct = provider.process_admin_request(req, cat_id, panel_id,
       118. path_info)
      Local variables:
      Name	Value
      _panel_order 	<function _panel_order at 0xb690f7c>
      cat_id 	u'general'
      panel_id 	u'plugin'
      panels 	[('general', 'General', 'basics', 'Basic Settings'), ('general', ...
      path_info 	None
      provider 	<trac.admin.web_ui.PluginAdminPanel object at 0xb6aeccc>
      providers 	{('tracini', 'inherit'): <iniadmin.iniadmin.IniAdminPlugin object at ...
      req 	<Request "GET u'/admin/general/plugin'">
      self 	<trac.admin.web_ui.AdminModule object at 0xb51f6ac>
    * File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/admin/web_ui.py", line 400, in render_admin_panel
      Code fragment:
       395. anchor = ''
       396. if req.args.has_key('plugin'):
       397. anchor = '#no%d' % (int(req.args.get('plugin')) + 1)
       398. req.redirect(req.href.admin(cat, page) + anchor)
       399.  
       400. return self._render_view(req)
       401.  
       402. # Internal methods
       403.  
       404. def _do_install(self, req):
       405. """Install a plugin."""
      Local variables:
      Name	Value
      cat 	u'general'
      page 	u'plugin'
      path_info 	None
      req 	<Request "GET u'/admin/general/plugin'">
      self 	<trac.admin.web_ui.PluginAdminPanel object at 0xb6aeccc>
    * File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/admin/web_ui.py", line 504, in _render_view
      Code fragment:
       499. readonly = True
       500. if plugin_filename and os.access(dist.location,
       501. os.F_OK + os.W_OK):
       502. readonly = False
       503. # retrieve plugin metadata
       504. info = get_pkginfo(dist)
       505. if not info:
       506. info = {'summary': description}
       507. for k in ('author author_email home_page url license trac'
       508. .split()):
       509. v = getattr(module, k, '')
      Local variables:
      Name	Value
      ComponentMeta 	<class 'trac.core.ComponentMeta'>
      component 	<class 'tracwatchlist.db.WatchlistDB'>
      description 	u'DB handler class for Trac WatchlistPlugin.'
      dist 	TracWatchlistPlugin 0.1 ...
      info 	{'description': 'UNKNOWN', 'license': 'GPLv2+', 'author': 'Bernhard ...
      k 	'trac'
      module 	<module 'tracwatchlist.db' from ...
      plugin_filename 	None
      plugins 	{'BreadCrumbsNavPlugin': {'info': {'description': 'UNKNOWN', 'license': ...
      plugins_dir 	'/srv/trac/plugins'
      readonly 	True
      req 	<Request "GET u'/admin/general/plugin'">
      self 	<trac.admin.web_ui.PluginAdminPanel object at 0xb6aeccc>
      v 	''
      version 	'0.1.dev-r4768'
    * File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/util/__init__.py", line 241, in get_pkginfo
      Code fragment:
       236. 'description', 'version')
       237. info = {}
       238. def normalize(attr):
       239. return attr.lower().replace('-', '_')
       240. try:
       241. pkginfo = email.message_from_string(dist.get_metadata('PKG-INFO'))
       242. for attr in [key for key in attrs if key in pkginfo]:
       243. info[normalize(attr)] = pkginfo[attr]
       244. except IOError, e:
       245. err = 'Failed to read PKG-INFO file for %s: %s' % (dist, e)
       246. for attr in attrs:
      Local variables:
      Name	Value
      attrs 	('author', 'author-email', 'license', 'home-page', 'summary', ...
      dist 	TracWatchlistPlugin 0.1 ...
      email 	<module 'email' from '/usr/lib/python2.5/email/__init__.pyc'>
      info 	{}
      normalize 	<function normalize at 0xb69072c>
      types 	<module 'types' from '/usr/lib/python2.5/types.pyc'>
    * File "/usr/lib/python2.5/site-packages/pkg_resources.py", line 1137, in get_metadata
      Code fragment:
      1132. return self.egg_info and self._has(self._fn(self.egg_info,name))
      1133.  
      1134. def get_metadata(self, name):
      1135. if not self.egg_info:
      1136. return ""
      1137. return self._get(self._fn(self.egg_info,name))
      1138.  
      1139. def get_metadata_lines(self, name):
      1140. return yield_lines(self.get_metadata(name))
      1141.  
      1142. def resource_isdir(self,resource_name):
      Local variables:
      Name	Value
      name 	'PKG-INFO'
      self 	<pkg_resources.EggMetadata instance at 0xb6c25ac>
    * File "/usr/lib/python2.5/site-packages/pkg_resources.py", line 1195, in _get
      Code fragment:
      1190. def _fn(self, base, resource_name):
      1191. return os.path.join(base, *resource_name.split('/'))
      1192.  
      1193. def _get(self, path):
      1194. if hasattr(self.loader, 'get_data'):
      1195. return self.loader.get_data(path)
      1196. raise NotImplementedError(
      1197. "Can't perform this operation for loaders without 'get_data()'"
      1198. )
      1199.  
      1200. register_loader_type(object, NullProvider)
      Local variables:
      Name	Value
      path 	'/usr/lib/python2.5/site-packages/TracWatchlistPlugin-0.1-py2.5.egg/EGG-INF ...
      self 	<pkg_resources.EggMetadata instance at 0xb6c25ac>

File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py", line 432, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py", line 204, in dispatch
  resp = chosen_handler.process_request(req)
File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/admin/web_ui.py", line 113, in process_request
  path_info)
File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/admin/web_ui.py", line 400, in render_admin_panel
  return self._render_view(req)
File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/admin/web_ui.py", line 504, in _render_view
  info = get_pkginfo(dist)
File "/usr/lib/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/util/__init__.py", line 241, in get_pkginfo
  pkginfo = email.message_from_string(dist.get_metadata('PKG-INFO'))
File "/usr/lib/python2.5/site-packages/pkg_resources.py", line 1137, in get_metadata
  return self._get(self._fn(self.egg_info,name))
File "/usr/lib/python2.5/site-packages/pkg_resources.py", line 1195, in _get
  return self.loader.get_data(path)

Trac: 0.11.2.1 Python: 2.5.2 (r252:60911, Jul 31 2008, 17:44:49) [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] setuptools: 0.6c8 SQLite: 3.4.2 pysqlite: 2.3.2 Genshi: 0.6dev-r960 Subversion: 1.4.6 (r28521)

[Martin Scharrer]

This works for me. Sounds more like a local installation issue. Please check if the EGG file is a valid ZIP file, e.g. using:

unzip -t /usr/lib/python2.5/site-packages/TracWatchlistPlugin-0.1-py2.5.egg

Also you can try removing the EGG file and run the easy_install command again. Please post the output of it if the error occurs again.

[Martin Scharrer]

No new feedback after two weeks. I'm closing this defect as 'worksforme'. Feel free to reopen it when you are able to provide feedback.