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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
import os
import shutil
import sys
import tempfile
import urllib2
import zipfile
from xml.dom import minidom
import mozfile
from mozlog.unstructured import getLogger
# Needed for the AMO's rest API -
# https://developer.mozilla.org/en/addons.mozilla.org_%28AMO%29_API_Developers%27_Guide/The_generic_AMO_API
AMO_API_VERSION = "1.5"
# Logger for 'mozprofile.addons' module
module_logger = getLogger(__name__)
class AddonFormatError(Exception):
"""Exception for not well-formed add-on manifest files"""
class AddonManager(object):
"""
Handles all operations regarding addons in a profile including:
installing and cleaning addons
"""
def __init__(self, profile, restore=True):
"""
:param profile: the path to the profile for which we install addons
:param restore: whether to reset to the previous state on instance garbage collection
"""
self.profile = profile
self.restore = restore
# Initialize all class members
self._internal_init()
def _internal_init(self):
"""Internal: Initialize all class members to their default value"""
# Add-ons installed; needed for cleanup
self._addons = []
# Backup folder for already existing addons
self.backup_dir = None
# Add-ons downloaded and which have to be removed from the file system
self.downloaded_addons = []
# Information needed for profile reset (see http://bit.ly/17JesUf)
self.installed_addons = []
self.installed_manifests = []
def __del__(self):
# reset to pre-instance state
if self.restore:
self.clean()
def clean(self):
"""Clean up addons in the profile."""
# Remove all add-ons installed
for addon in self._addons:
# TODO (bug 934642)
# Once we have a proper handling of add-ons we should kill the id
# from self._addons once the add-on is removed. For now lets forget
# about the exception
try:
self.remove_addon(addon)
except IOError:
pass
# Remove all downloaded add-ons
for addon in self.downloaded_addons:
mozfile.remove(addon)
# restore backups
if self.backup_dir and os.path.isdir(self.backup_dir):
extensions_path = os.path.join(self.profile, 'extensions', 'staged')
for backup in os.listdir(self.backup_dir):
backup_path = os.path.join(self.backup_dir, backup)
shutil.move(backup_path, extensions_path)
if not os.listdir(self.backup_dir):
mozfile.remove(self.backup_dir)
# reset instance variables to defaults
self._internal_init()
@classmethod
def download(self, url, target_folder=None):
"""
Downloads an add-on from the specified URL to the target folder
:param url: URL of the add-on (XPI file)
:param target_folder: Folder to store the XPI file in
"""
response = urllib2.urlopen(url)
fd, path = tempfile.mkstemp(suffix='.xpi')
os.write(fd, response.read())
os.close(fd)
if not self.is_addon(path):
mozfile.remove(path)
raise AddonFormatError('Not a valid add-on: %s' % url)
# Give the downloaded file a better name by using the add-on id
details = self.addon_details(path)
new_path = path.replace('.xpi', '_%s.xpi' % details.get('id'))
# Move the add-on to the target folder if requested
if target_folder:
new_path = os.path.join(target_folder, os.path.basename(new_path))
os.rename(path, new_path)
return new_path
def get_addon_path(self, addon_id):
"""Returns the path to the installed add-on
:param addon_id: id of the add-on to retrieve the path from
"""
# By default we should expect add-ons being located under the
# extensions folder. Only if the application hasn't been run and
# installed the add-ons yet, it will be located under 'staged'.
# Also add-ons could have been unpacked by the application.
extensions_path = os.path.join(self.profile, 'extensions')
paths = [os.path.join(extensions_path, addon_id),
os.path.join(extensions_path, addon_id + '.xpi'),
os.path.join(extensions_path, 'staged', addon_id),
os.path.join(extensions_path, 'staged', addon_id + '.xpi')]
for path in paths:
if os.path.exists(path):
return path
raise IOError('Add-on not found: %s' % addon_id)
@classmethod
def is_addon(self, addon_path):
"""
Checks if the given path is a valid addon
:param addon_path: path to the add-on directory or XPI
"""
try:
self.addon_details(addon_path)
return True
except AddonFormatError:
return False
def install_addons(self, addons=None, manifests=None):
"""
Installs all types of addons
:param addons: a list of addon paths to install
:param manifest: a list of addon manifests to install
"""
# install addon paths
if addons:
if isinstance(addons, basestring):
addons = [addons]
for addon in set(addons):
self.install_from_path(addon)
# install addon manifests
if manifests:
if isinstance(manifests, basestring):
manifests = [manifests]
for manifest in manifests:
self.install_from_manifest(manifest)
def install_from_manifest(self, filepath):
"""
Installs addons from a manifest
:param filepath: path to the manifest of addons to install
"""
try:
from manifestparser import ManifestParser
except ImportError:
module_logger.critical(
"Installing addons from manifest requires the"
" manifestparser package to be installed.")
raise
manifest = ManifestParser()
manifest.read(filepath)
addons = manifest.get()
for addon in addons:
if '://' in addon['path'] or os.path.exists(addon['path']):
self.install_from_path(addon['path'])
continue
# No path specified, try to grab it off AMO
locale = addon.get('amo_locale', 'en_US')
query = 'https://services.addons.mozilla.org/' + locale + '/firefox/api/' \
+ AMO_API_VERSION + '/'
if 'amo_id' in addon:
# this query grabs information on the addon base on its id
query += 'addon/' + addon['amo_id']
else:
# this query grabs information on the first addon returned from a search
query += 'search/' + addon['name'] + '/default/1'
install_path = AddonManager.get_amo_install_path(query)
self.install_from_path(install_path)
self.installed_manifests.append(filepath)
@classmethod
def get_amo_install_path(self, query):
"""
Get the addon xpi install path for the specified AMO query.
:param query: query-documentation_
.. _query-documentation: https://developer.mozilla.org/en/addons.mozilla.org_%28AMO%29_API_Developers%27_Guide/The_generic_AMO_API # noqa
"""
response = urllib2.urlopen(query)
dom = minidom.parseString(response.read())
for node in dom.getElementsByTagName('install')[0].childNodes:
if node.nodeType == node.TEXT_NODE:
return node.data
@classmethod
def addon_details(cls, addon_path):
"""
Returns a dictionary of details about the addon.
:param addon_path: path to the add-on directory or XPI
Returns::
{'id': u'rainbow@colors.org', # id of the addon
'version': u'1.4', # version of the addon
'name': u'Rainbow', # name of the addon
'unpack': False } # whether to unpack the addon
"""
details = {
'id': None,
'unpack': False,
'name': None,
'version': None
}
def get_namespace_id(doc, url):
attributes = doc.documentElement.attributes
namespace = ""
for i in range(attributes.length):
if attributes.item(i).value == url:
if ":" in attributes.item(i).name:
# If the namespace is not the default one remove 'xlmns:'
namespace = attributes.item(i).name.split(':')[1] + ":"
break
return namespace
def get_text(element):
"""Retrieve the text value of a given node"""
rc = []
for node in element.childNodes:
if node.nodeType == node.TEXT_NODE:
rc.append(node.data)
return ''.join(rc).strip()
if not os.path.exists(addon_path):
raise IOError('Add-on path does not exist: %s' % addon_path)
try:
if zipfile.is_zipfile(addon_path):
# Bug 944361 - We cannot use 'with' together with zipFile because
# it will cause an exception thrown in Python 2.6.
try:
compressed_file = zipfile.ZipFile(addon_path, 'r')
manifest = compressed_file.read('install.rdf')
finally:
compressed_file.close()
elif os.path.isdir(addon_path):
with open(os.path.join(addon_path, 'install.rdf'), 'r') as f:
manifest = f.read()
else:
raise IOError('Add-on path is neither an XPI nor a directory: %s' % addon_path)
except (IOError, KeyError) as e:
raise AddonFormatError(str(e)), None, sys.exc_info()[2]
try:
doc = minidom.parseString(manifest)
# Get the namespaces abbreviations
em = get_namespace_id(doc, 'http://www.mozilla.org/2004/em-rdf#')
rdf = get_namespace_id(doc, 'http://www.w3.org/1999/02/22-rdf-syntax-ns#')
description = doc.getElementsByTagName(rdf + 'Description').item(0)
for entry, value in description.attributes.items():
# Remove the namespace prefix from the tag for comparison
entry = entry.replace(em, "")
if entry in details.keys():
details.update({entry: value})
for node in description.childNodes:
# Remove the namespace prefix from the tag for comparison
entry = node.nodeName.replace(em, "")
if entry in details.keys():
details.update({entry: get_text(node)})
except Exception as e:
raise AddonFormatError(str(e)), None, sys.exc_info()[2]
# turn unpack into a true/false value
if isinstance(details['unpack'], basestring):
details['unpack'] = details['unpack'].lower() == 'true'
# If no ID is set, the add-on is invalid
if details.get('id') is None:
raise AddonFormatError('Add-on id could not be found.')
return details
def install_from_path(self, path, unpack=False):
"""
Installs addon from a filepath, url or directory of addons in the profile.
:param path: url, path to .xpi, or directory of addons
:param unpack: whether to unpack unless specified otherwise in the install.rdf
"""
# if the addon is a URL, download it
# note that this won't work with protocols urllib2 doesn't support
if mozfile.is_url(path):
path = self.download(path)
self.downloaded_addons.append(path)
addons = [path]
# if path is not an add-on, try to install all contained add-ons
try:
self.addon_details(path)
except AddonFormatError as e:
module_logger.warning('Could not install %s: %s' % (path, str(e)))
# If the path doesn't exist, then we don't really care, just return
if not os.path.isdir(path):
return
addons = [os.path.join(path, x) for x in os.listdir(path) if
self.is_addon(os.path.join(path, x))]
addons.sort()
# install each addon
for addon in addons:
# determine the addon id
addon_details = self.addon_details(addon)
addon_id = addon_details.get('id')
# if the add-on has to be unpacked force it now
# note: we might want to let Firefox do it in case of addon details
orig_path = None
if os.path.isfile(addon) and (unpack or addon_details['unpack']):
orig_path = addon
addon = tempfile.mkdtemp()
mozfile.extract(orig_path, addon)
# copy the addon to the profile
extensions_path = os.path.join(self.profile, 'extensions', 'staged')
addon_path = os.path.join(extensions_path, addon_id)
if os.path.isfile(addon):
addon_path += '.xpi'
# move existing xpi file to backup location to restore later
if os.path.exists(addon_path):
self.backup_dir = self.backup_dir or tempfile.mkdtemp()
shutil.move(addon_path, self.backup_dir)
# copy new add-on to the extension folder
if not os.path.exists(extensions_path):
os.makedirs(extensions_path)
shutil.copy(addon, addon_path)
else:
# move existing folder to backup location to restore later
if os.path.exists(addon_path):
self.backup_dir = self.backup_dir or tempfile.mkdtemp()
shutil.move(addon_path, self.backup_dir)
# copy new add-on to the extension folder
shutil.copytree(addon, addon_path, symlinks=True)
# if we had to extract the addon, remove the temporary directory
if orig_path:
mozfile.remove(addon)
addon = orig_path
self._addons.append(addon_id)
self.installed_addons.append(addon)
def remove_addon(self, addon_id):
"""Remove the add-on as specified by the id
:param addon_id: id of the add-on to be removed
"""
path = self.get_addon_path(addon_id)
mozfile.remove(path)
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