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# -*- coding: utf-8 -*-
#
# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.
import os
import threading
import ssl
import urllib
from urllib.request import Request, urlopen
from urllib.parse import urlparse
import io
import mimetypes
import logging
if os.name == 'nt':
import certifi
import nbxmpp
from gi.repository import Gtk, GLib
from common import gajim
from common import ged
from plugins import GajimPlugin
from dialogs import FileChooserDialog, ErrorDialog
log = logging.getLogger('gajim.plugin_system.httpupload')
IQ_CALLBACK = {}
NS_HTTPUPLOAD = 'urn:xmpp:http:upload'
class HTTPUploadPlugin(GajimPlugin):
def init(self):
self.config_dialog = None
self.events_handlers = {
'agent-info-received': (
ged.PRECORE, self.handle_agent_info_received),
'stanza-message-outgoing': (
99, self.handle_outgoing_stanza),
'gc-stanza-message-outgoing': (
99, self.handle_outgoing_stanza),
'raw-iq-received': (
ged.PRECORE, self.handle_iq_received)}
self.gui_extension_points = {
'chat_control_base': (self.connect_with_chat_control,
self.disconnect_from_chat_control),
'chat_control_base_update_toolbar': (self.update_chat_control,
None)}
self.gui_interfaces = {}
self.messages = []
@staticmethod
def handle_iq_received(event):
id_ = event.stanza.getAttr("id")
if id_ in IQ_CALLBACK:
try:
IQ_CALLBACK[id_](event.stanza)
except:
raise
finally:
del IQ_CALLBACK[id_]
def handle_agent_info_received(self, event):
if (NS_HTTPUPLOAD in event.features and
gajim.jid_is_transport(event.jid)):
account = event.conn.name
interface = self.get_interface(account)
interface.enabled = True
interface.component = event.jid
interface.update_button_states(True)
def handle_outgoing_stanza(self, event):
message = event.msg_iq.getTagData('body')
if message and message in self.messages:
self.messages.remove(message)
oob = event.msg_iq.addChild('x', namespace=nbxmpp.NS_X_OOB)
oob.addChild('url').setData(message)
def connect_with_chat_control(self, chat_control):
account = chat_control.contact.account.name
self.get_interface(account).add_button(chat_control)
def disconnect_from_chat_control(self, chat_control):
jid = chat_control.contact.jid
account = chat_control.account
interface = self.get_interface(account)
if jid not in interface.controls:
return
actions_hbox = chat_control.xml.get_object('actions_hbox')
actions_hbox.remove(interface.controls[jid])
def update_chat_control(self, chat_control):
account = chat_control.account
if gajim.connections[account].connection is None:
self.get_interface(account).update_button_states(False)
def get_interface(self, account):
try:
return self.gui_interfaces[account]
except KeyError:
self.gui_interfaces[account] = Base(self, account)
return self.gui_interfaces[account]
class Base(object):
def __init__(self, plugin, account):
self.plugin = plugin
self.account = account
self.encrypted_upload = False
self.enabled = False
self.component = None
self.controls = {}
def add_button(self, chat_control):
jid = chat_control.contact.jid
img = Gtk.Image()
img.set_from_file(self.plugin.local_file_path('httpupload.png'))
actions_hbox = chat_control.xml.get_object('actions_hbox')
button = Gtk.Button(label=None, stock=None, use_underline=True)
button.set_property('can-focus', False)
button.set_image(img)
button.set_relief(Gtk.ReliefStyle.NONE)
actions_hbox.add(button)
send_button = chat_control.xml.get_object('send_button')
button_pos = actions_hbox.child_get_property(send_button, 'position')
actions_hbox.child_set_property(button, 'position', button_pos - 1)
self.controls[jid] = button
id_ = button.connect(
'clicked', self.on_file_button_clicked, chat_control)
chat_control.handlers[id_] = button
self.set_button_state(self.enabled, button)
button.show()
@staticmethod
def set_button_state(state, button):
if state:
button.set_sensitive(state)
button.set_tooltip_text(_('Send file via http upload'))
else:
button.set_sensitive(state)
button.set_tooltip_text(
_('Your server does not support http uploads'))
def update_button_states(self, state):
for jid in self.controls:
self.set_button_state(state, self.controls[jid])
@staticmethod
def encryption_activated(chat_control):
log.info('Encryption is: %s', chat_control.encryption or 'disabled')
return chat_control.encryption is not None
def on_file_button_clicked(self, widget, chat_control):
FileChooserDialog(
on_response_ok=lambda widget: self.on_file_dialog_ok(widget,
chat_control),
title_text=_('Choose file to send'),
action=Gtk.FileChooserAction.OPEN,
buttons=(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_OPEN, Gtk.ResponseType.OK),
default_response=Gtk.ResponseType.OK,
transient_for=chat_control.parent_win.window)
def on_file_dialog_ok(self, widget, chat_control):
path = widget.get_filename()
widget.destroy()
if not path or not os.path.exists(path):
return
invalid_file = False
if os.path.isfile(path):
stat = os.stat(path)
if stat[6] == 0:
invalid_file = True
msg = _('File is empty')
else:
invalid_file = True
msg = _('File does not exist')
if invalid_file:
ErrorDialog(_('Could not open file'), msg,
transient_for=chat_control.parent_win.window)
return
mime = mimetypes.MimeTypes().guess_type(path)[0]
if not mime:
mime = 'application/octet-stream' # fallback mime type
log.info("Detected MIME type of file: %s", mime)
event = threading.Event()
progress = ProgressWindow(
self.plugin, chat_control.parent_win.window, event)
try:
file = File(path, mime=mime, encrypted=False,
control=chat_control, progress=progress, event=event)
except Exception as error:
log.exception('Error while loading file')
file.progress.close_dialog()
ErrorDialog(_('Error'), str(error),
transient_for=file.control.parent_win.window)
return
if self.encryption_activated(chat_control):
self.encrypt_file(file)
else:
self.request_slot(file)
def encrypt_file(self, file):
GLib.idle_add(file.progress.label.set_text, _('Encrypting file...'))
encryption = file.control.encryption
plugin = gajim.plugin_manager.encryption_plugins[encryption]
if hasattr(plugin, 'encrypt_file'):
plugin.encrypt_file(file, self.account, self.request_slot)
else:
file.progress.close_dialog()
ErrorDialog(
_('Error'),
'For the choosen encryption is no encryption method available',
transient_for=file.control.parent_win.window)
def request_slot(self, file):
GLib.idle_add(file.progress.label.set_text,
_('Requesting HTTP Upload Slot...'))
iq = nbxmpp.Iq(typ='get', to=self.component)
id_ = gajim.get_an_id()
iq.setID(id_)
request = iq.setTag(name="request", namespace=NS_HTTPUPLOAD)
request.addChild('filename', payload=os.path.basename(file.path))
request.addChild('size', payload=file.size)
request.addChild('content-type', payload=file.mime)
log.info("Sending request for slot")
IQ_CALLBACK[id_] = lambda stanza: self.received_slot(stanza, file)
gajim.connections[self.account].connection.send(iq)
def received_slot(self, stanza, file):
log.info("Received slot")
if stanza.getType() == 'error':
file.progress.close_dialog()
ErrorDialog(_('Could not request upload slot'),
stanza.getErrorMsg(),
transient_for=file.control.parent_win.window)
log.error(stanza)
return
try:
file.put = stanza.getTag("slot").getTag("put").getData()
file.get = stanza.getTag("slot").getTag("get").getData()
except Exception:
file.progress.close_dialog()
log.error("Got unexpected stanza: %s", stanza)
log.exception('Error')
ErrorDialog(_('Could not request upload slot'),
_('Got unexpected response from server (see log)'),
transient_for=file.control.parent_win.window)
return
try:
if (urlparse(file.put).scheme != 'https' or
urlparse(file.get).scheme != 'https'):
raise UnsecureTransportError
except UnsecureTransportError as error:
file.progress.close_dialog()
ErrorDialog(_('Error'), str(error),
transient_for=file.control.parent_win.window)
return
try:
file.stream = StreamFileWithProgress(file)
except Exception as exc:
file.progress.close_dialog()
log.exception("Could not open file")
ErrorDialog(_('Could not open file'),
_('Exception raised while opening file (see log)'),
transient_for=file.control.parent_win.window)
return
log.info('Uploading file to %s', file.put)
log.info('Please download from %s', file.get)
thread = threading.Thread(target=self.upload_file, args=(file,))
thread.daemon = True
thread.start()
def upload_file(self, file):
GLib.idle_add(file.progress.label.set_text,
_('Uploading file via HTTP...'))
try:
headers = {'User-Agent': 'Gajim %s' % gajim.version,
'Content-Type': file.mime,
'Content-Length': file.size}
request = Request(
file.put, data=file.stream, headers=headers, method='PUT')
log.info("Opening Urllib upload request...")
if os.name == 'nt':
transfer = urlopen(request, cafile=certifi.where(), timeout=30)
else:
transfer = urlopen(request, timeout=30)
file.stream.close()
log.info('Urllib upload request done, response code: %s',
transfer.getcode())
GLib.idle_add(self.upload_complete, transfer.getcode(), file)
return
except UploadAbortedException as exc:
log.info(exc)
error_msg = exc
except urllib.error.URLError as exc:
if isinstance(exc.reason, ssl.SSLError):
error_msg = exc.reason.reason
if error_msg == 'CERTIFICATE_VERIFY_FAILED':
log.exception('Certificate verify failed')
else:
log.exception('URLError')
error_msg = exc.reason
except Exception as exc:
log.exception("Exception during upload")
error_msg = exc
GLib.idle_add(file.progress.close_dialog)
GLib.idle_add(self.on_upload_error, file, error_msg)
def upload_complete(self, response_code, file):
file.progress.close_dialog()
if 200 <= response_code < 300:
log.info("Upload completed successfully")
message = file.get
if file.user_data:
message += '#' + file.user_data
else:
self.plugin.messages.append(message)
file.control.send_message(message=message)
file.control.msg_textview.grab_focus()
else:
log.error('Got unexpected http upload response code: %s',
response_code)
ErrorDialog(
_('Could not upload file'),
_('HTTP response code from server: %s') % response_code,
transient_for=file.control.parent_win.window)
@staticmethod
def on_upload_error(file, reason):
file.progress.close_dialog()
ErrorDialog(_('Error'), str(reason),
transient_for=file.control.parent_win.window)
class File:
def __init__(self, path, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)
self.stream = None
self.path = path
self.put = None
self.get = None
self.data = None
self.user_data = None
self.size = None
self.load_data()
def load_data(self):
with open(self.path, 'rb') as content:
self.data = content.read()
self.size = len(self.data)
def get_data(self, full=False):
if full:
return io.BytesIO(self.data).getvalue()
return io.BytesIO(self.data)
class StreamFileWithProgress:
def __init__(self, file, *args):
self.event = file.event
self.backing = file.get_data()
self.backing.seek(0, os.SEEK_END)
self._total = self.backing.tell()
self.backing.seek(0)
self._callback = file.progress.update_progress
self._args = args
self._seen = 0
def __len__(self):
return self._total
def read(self, size):
if self.event.isSet():
raise UploadAbortedException
data = self.backing.read(size)
self._seen += len(data)
if self._callback:
GLib.idle_add(
self._callback, self._seen, self._total, *self._args)
return data
def close(self):
return self.backing.close()
class ProgressWindow:
def __init__(self, plugin, parent, event):
self.plugin = plugin
self.event = event
glade_file = self.plugin.local_file_path('upload_progress_dialog.ui')
self.xml = Gtk.Builder()
self.xml.add_from_file(glade_file)
self.dialog = self.xml.get_object('progress_dialog')
self.dialog.set_transient_for(parent)
self.dialog.set_title('HTTP Upload')
self.label = self.xml.get_object('label')
self.progressbar = self.xml.get_object('progressbar')
self.dialog.show_all()
self.xml.connect_signals(self)
self.pulse = GLib.timeout_add(100, self.pulse_progressbar)
def pulse_progressbar(self):
if self.dialog:
self.progressbar.pulse()
return True
return False
def on_destroy(self, *args):
self.event.set()
if self.pulse:
GLib.source_remove(self.pulse)
def update_progress(self, seen, total):
if self.event.isSet():
return
if self.pulse:
GLib.source_remove(self.pulse)
self.pulse = None
pct = (float(seen) / total) * 100.0
self.progressbar.set_fraction(float(seen) / total)
self.progressbar.set_text(str(int(pct)) + "%")
def close_dialog(self, *args):
self.dialog.destroy()
class UploadAbortedException(Exception):
def __str__(self):
return "Upload Aborted"
class UnsecureTransportError(Exception):
def __str__(self):
return 'Server returned unsecure transport'
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