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Merge branch 'gtk3' into 'gtk3'

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Limit image preview to https and httpupload

See merge request gajim/gajim-plugins!47
This commit is contained in:
Philipp Hörist
2017-11-06 16:58:18 +01:00
parent fb59c70946 1abd096763
commit 348d87a1f9
2 changed files with 106 additions and 91 deletions
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2
url_image_preview/manifest.ini
View File

@@ -1,7 +1,7 @@
[info]
name: Url image preview
short_name: url_image_preview
version: 0.5.6
version: 2.0.1
description: Displays a preview of links to images
authors = Denis Fomin <fominde@gmail.com>
Yann Leboulanger <asterix@lagaule.org>

195
url_image_preview/url_image_preview.py
View File

@@ -15,30 +15,28 @@
## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
##
from gi.repository import Gtk, Gdk, GLib, GObject, GdkPixbuf, Gio
import os
import hashlib
import binascii
import logging
from urllib.parse import urlparse
from io import BytesIO
import shutil
from functools import partial
import logging
import nbxmpp
from gi.repository import Gtk, Gdk, GLib, GdkPixbuf
from gajim.common import app
from gajim.common import ged
from gajim.common import helpers
from gajim.common import configpaths
from gajim import dialogs
from gajim.plugins import GajimPlugin
from gajim.plugins.helpers import log_calls
from gajim.plugins.gui import GajimPluginConfigDialog
from gajim.conversation_textview import TextViewImage
from .http_functions import get_http_head, get_http_file
from .config_dialog import UrlImagePreviewConfigDialog
from url_image_preview.http_functions import get_http_head, get_http_file
from url_image_preview.config_dialog import UrlImagePreviewConfigDialog
log = logging.getLogger('gajim.plugin_system.url_image_preview')
log = logging.getLogger('gajim.plugin_system.preview')
try:
from PIL import Image
@@ -54,10 +52,10 @@ try:
from cryptography.hazmat.primitives.ciphers import algorithms
from cryptography.hazmat.primitives.ciphers.modes import GCM
decryption_available = True
except Exception as e:
except Exception:
DEP_MSG = 'For preview of encrypted images, ' \
'please install python-cryptography!'
log.debug('Cryptography Import Error: ' + str(e))
log.exception('Error')
log.info('Decryption/Encryption disabled due to errors')
decryption_available = False
@@ -71,32 +69,19 @@ class UrlImagePreviewPlugin(GajimPlugin):
if not decryption_available:
self.available_text = DEP_MSG
self.config_dialog = partial(UrlImagePreviewConfigDialog, self)
self.events_handlers = {}
self.events_handlers['message-received'] = (
ged.PRECORE, self.handle_message_received)
self.gui_extension_points = {
'chat_control_base': (self.connect_with_chat_control,
self.disconnect_from_chat_control),
'print_special_text': (self.print_special_text, None), }
'history_window':
(self.connect_with_history, self.disconnect_from_history),
'print_real_text': (self.print_real_text, None), }
self.config_default_values = {
'PREVIEW_SIZE': (150, 'Preview size(10-512)'),
'MAX_FILE_SIZE': (524288, 'Max file size for image preview'),
'LEFTCLICK_ACTION': ('open_menuitem', 'Open')}
'LEFTCLICK_ACTION': ('open_menuitem', 'Open'),
'ANONYMOUS_MUC': False,}
self.controls = {}
# remove oob tag if oob url == message text
def handle_message_received(self, event):
oob_node = event.stanza.getTag('x', namespace=nbxmpp.NS_X_OOB)
oob_url = None
oob_desc = None
if oob_node:
oob_url = oob_node.getTagData('url')
oob_desc = oob_node.getTagData('desc')
if oob_url and oob_url == event.msgtxt and \
(not oob_desc or oob_desc == ""):
log.debug("Detected oob tag containing same"
"url as the message text, deleting oob tag...")
event.stanza.delChild(oob_node)
self.history_window_control = None
@log_calls('UrlImagePreviewPlugin')
def connect_with_chat_control(self, chat_control):
@@ -104,32 +89,51 @@ class UrlImagePreviewPlugin(GajimPlugin):
jid = chat_control.contact.jid
if account not in self.controls:
self.controls[account] = {}
self.controls[account][jid] = Base(self, chat_control)
self.controls[account][jid] = Base(self, chat_control.conv_textview,
chat_control.parent_win.window)
@log_calls('UrlImagePreviewPlugin')
def disconnect_from_chat_control(self, chat_control):
account = chat_control.contact.account.name
jid = chat_control.contact.jid
self.controls[account][jid].deinit()
self.controls[account][jid].deinit_handlers()
del self.controls[account][jid]
def print_special_text(self, tv, special_text, other_tags, graphics=True,
additional_data=None, iter_=None):
@log_calls('UrlImagePreviewPlugin')
def connect_with_history(self, history_window):
if self.history_window_control:
log.error("connect_with_history: deinit handlers")
self.history_window_control.deinit_handlers()
log.error("connect_with_history: create base")
self.history_window_control = Base(
self, history_window.history_textview, history_window)
@log_calls('UrlImagePreviewPlugin')
def disconnect_from_history(self, history_window):
if self.history_window_control:
self.history_window_control.deinit_handlers()
self.history_window_control = None
def print_real_text(self, tv, real_text, text_tags, graphics,
iter_, additional_data):
if tv.used_in_history_window and self.history_window_control:
self.history_window_control.print_real_text(
real_text, text_tags, graphics, iter_, additional_data)
account = tv.account
for jid in self.controls[account]:
if self.controls[account][jid].chat_control.conv_textview != tv:
if self.controls[account][jid].textview != tv:
continue
self.controls[account][jid].print_special_text(
special_text, other_tags, graphics=graphics,
additional_data=additional_data, iter_=iter_)
self.controls[account][jid].print_real_text(
real_text, text_tags, graphics, iter_, additional_data)
return
class Base(object):
def __init__(self, plugin, chat_control):
def __init__(self, plugin, textview, parent_win=None):
self.plugin = plugin
self.chat_control = chat_control
self.textview = self.chat_control.conv_textview
self.parent_win = parent_win
self.textview = textview
self.handlers = {}
self.directory = os.path.join(configpaths.gajimpaths['MY_DATA'],
@@ -140,11 +144,11 @@ class Base(object):
try:
self._create_path(self.directory)
self._create_path(self.thumbpath)
except Exception as e:
except Exception:
log.error("Error creating download and/or thumbnail folder!")
raise
def deinit(self):
def deinit_handlers(self):
# remove all register handlers on wigets, created by self.xml
# to prevent circular references among objects
for i in list(self.handlers.keys()):
@@ -152,20 +156,26 @@ class Base(object):
self.handlers[i].disconnect(i)
del self.handlers[i]
def print_special_text(self, special_text, other_tags, graphics=True,
additional_data=None, iter_=None):
# remove qip bbcode
special_text = special_text.rsplit('[/img]')[0]
def print_real_text(self, real_text, text_tags, graphics, iter_,
additional_data):
urlparts = urlparse(real_text)
if (urlparts.scheme not in ["https", "aesgcm"] or
not urlparts.netloc):
log.info("Not accepting URL scheme '%s' for image preview: %s",
urlparts.scheme, real_text)
return
if special_text.startswith('www.'):
special_text = 'http://' + special_text
if special_text.startswith('ftp.'):
special_text = 'ftp://' + special_text
try:
oob_url = additional_data["gajim"]["oob_url"]
except (KeyError, AttributeError):
oob_url = None
urlparts = urlparse(special_text)
if urlparts.scheme not in ["https", "http", "ftp", "ftps", 'aesgcm'] or \
not urlparts.netloc:
log.info("Not accepting URL for image preview: %s" % special_text)
# allow aesgcm uris without oob marker (aesgcm uris are always
# httpupload filetransfers)
if urlparts.scheme != "aesgcm" and real_text != oob_url:
log.info("Not accepting URL for image preview "
"(wrong or no oob data): %s", real_text)
log.debug("additional_data: %s", additional_data)
return
# Don't print the URL in the message window (in the calling function)
@@ -178,14 +188,14 @@ class Base(object):
# Show URL, until image is loaded (if ever)
ttt = buffer_.get_tag_table()
repl_start = buffer_.create_mark(None, iter_, True)
buffer_.insert_with_tags(iter_, special_text,
buffer_.insert_with_tags(iter_, real_text,
*[(ttt.lookup(t) if isinstance(t, str) else t) for t in ["url"]])
repl_end = buffer_.create_mark(None, iter_, True)
filename = os.path.basename(urlparts.path)
ext = os.path.splitext(filename)[1]
name = os.path.splitext(filename)[0]
namehash = hashlib.sha1(special_text.encode('utf-8')).hexdigest()
namehash = hashlib.sha1(real_text.encode('utf-8')).hexdigest()
newfilename = name + '_' + namehash + ext
thumbfilename = name + '_' + namehash + '_thumb_' \
+ str(self.plugin.config['PREVIEW_SIZE']) + ext
@@ -208,15 +218,14 @@ class Base(object):
iv = fragment[:12]
if len(key) == 32 and len(iv) == 12:
encrypted = True
# file exists but thumbnail got deleted
if os.path.exists(filepath) and not os.path.exists(thumbpath):
with open(filepath, 'rb') as f:
mem = f.read()
f.closed
app.thread_interface(
self._save_thumbnail, [thumbpath, (mem, '')],
self._update_img, [special_text, repl_start,
self._update_img, [real_text, repl_start,
repl_end, filepath, encrypted])
# display thumbnail if already downloadeded
@@ -224,7 +233,7 @@ class Base(object):
elif os.path.exists(filepath) and os.path.exists(thumbpath):
app.thread_interface(
self._load_thumbnail, [thumbpath],
self._update_img, [special_text, repl_start,
self._update_img, [real_text, repl_start,
repl_end, filepath, encrypted])
# or download file, calculate thumbnail and finally display it
@@ -236,10 +245,10 @@ class Base(object):
# which does not fetch data, just headers
# then check the mime type and filesize
if urlparts.scheme == 'aesgcm':
special_text = 'https://' + special_text[9:]
real_text = 'https://' + real_text[9:]
app.thread_interface(
get_http_head, [self.textview.account, special_text],
self._check_mime_size, [special_text, repl_start, repl_end,
get_http_head, [self.textview.account, real_text],
self._check_mime_size, [real_text, repl_start, repl_end,
filepaths, key, iv, encrypted])
def _save_thumbnail(self, thumbpath, tuple_arg):
@@ -272,7 +281,7 @@ class Base(object):
loader.close()
pixbuf = loader.get_pixbuf()
pixbuf, w, h = self._get_pixbuf_of_size(pixbuf, size)
ok, mem = pixbuf.save_to_bufferv("jpeg", ["quality"], ["100"])
except Exception as e:
log.info("Failed to load image using gdk pixbuf, "
@@ -289,7 +298,7 @@ class Base(object):
_('Exception raised while saving thumbnail '
'for image file (see error log for more '
'information)'),
transient_for=self.chat_control.parent_win.window)
transient_for=self.parent_win)
log.error(str(e))
return (mem, alt)
@@ -300,13 +309,13 @@ class Base(object):
return (mem, '')
def _write_file(self, path, data):
log.info("Writing '%s' of size %d..." % (path, len(data)))
log.info("Writing '%s' of size %d...", path, len(data))
try:
with open(path, "wb") as output_file:
output_file.write(data)
output_file.closed
except Exception as e:
log.error("Failed to write file '%s'!" % path)
log.error("Failed to write file '%s'!", path)
raise
def _update_img(self, tuple_arg, url, repl_start, repl_end,
@@ -326,11 +335,13 @@ class Base(object):
# (Gtk textview is NOT threadsafe by itself!!)
def add_to_textview():
try: # textview closed in the meantime etc.
at_end = self.textview.at_the_end()
buffer_ = repl_start.get_buffer()
iter_ = buffer_.get_iter_at_mark(repl_start)
buffer_.insert(iter_, "\n")
# buffer_.insert(iter_, "\n")
anchor = buffer_.create_child_anchor(iter_)
# Use url as tooltip for image
img = TextViewImage(anchor, url)
loader = GdkPixbuf.PixbufLoader()
@@ -343,21 +354,23 @@ class Base(object):
eb.show_all()
self.textview.tv.add_child_at_anchor(eb, anchor)
buffer_.delete(iter_,
buffer_.get_iter_at_mark(repl_end))
buffer_.get_iter_at_mark(repl_end))
if at_end:
GLib.idle_add(self.textview.scroll_to_end_iter)
except Exception as ex:
log.warn("Exception while loading %s: %s" % (str(url), str(ex)))
log.warn("Exception while loading %s: %s", url, ex)
return False
# add to mainloop --> make call threadsafe
GObject.idle_add(add_to_textview)
GLib.idle_add(add_to_textview)
except Exception:
# URL is already displayed
log.error('Could not display image for URL: %s'
% url)
log.error('Could not display image for URL: %s', url)
raise
else:
# If image could not be downloaded, URL is already displayed
log.error('Could not download image for URL: %s -- %s'
% (url, alt))
log.error('Could not download image for URL: %s -- %s',
url, alt)
def _check_mime_size(self, tuple_arg,
url, repl_start, repl_end, filepaths,
@@ -366,23 +379,24 @@ class Base(object):
# Check if mime type is acceptable
if file_mime == '' and file_size == 0:
log.info("Failed to load HEAD Request for URL: '%s'"
"(see debug log for more info)" % url)
"(see debug log for more info)", url)
# URL is already displayed
return
if file_mime.lower() not in ACCEPTED_MIME_TYPES:
log.info("Not accepted mime type '%s' for URL: '%s'"
% (file_mime.lower(), url))
log.info("Not accepted mime type '%s' for URL: '%s'",
file_mime.lower(), url)
# URL is already displayed
return
# Check if file size is acceptable
if file_size > self.plugin.config['MAX_FILE_SIZE'] or file_size == 0:
log.info("File size (%s) too big or unknown (zero) for URL: '%s'"
% (str(file_size), url))
max_size = int(self.plugin.config['MAX_FILE_SIZE'])
if file_size > max_size or file_size == 0:
log.info("File size (%s) too big or unknown (zero) for URL: '%s'",
file_size, url)
# URL is already displayed
return
attributes = {'src': url,
'max_size': self.plugin.config['MAX_FILE_SIZE'],
'max_size': max_size,
'filepaths': filepaths,
'key': key,
'iv': iv}
@@ -412,7 +426,7 @@ class Base(object):
_('Could not save file'),
_('Exception raised while saving image file'
' (see error log for more information)'),
transient_for=self.chat_control.parent_win.window)
transient_for=self.parent_win)
log.error(str(e))
# Create thumbnail, write it to harddisk and return it
@@ -474,7 +488,7 @@ class Base(object):
xml.get_object('open_file_in_browser_menuitem')
extras_separator = \
xml.get_object('extras_separator')
if data["encrypted"]:
open_link_in_browser_menuitem.hide()
if app.config.get('autodetect_browser_mailer') \
@@ -507,6 +521,7 @@ class Base(object):
def on_save_as_menuitem_activate(self, menu, data):
filepath = data["filepath"]
original_filename = data["original_filename"]
def on_continue(response, target_path):
if response < 0:
return
@@ -572,10 +587,10 @@ class Base(object):
_('You cannot open encrypted files in your '
'browser directly. Try "Open Downloaded File '
'in Browser" instead.'),
transient_for=self.chat_control.parent_win.window)
transient_for=self.parent_win)
else:
helpers.launch_browser_mailer('url', url)
def on_open_file_in_browser_menuitem_activate(self, menu, data):
if os.name == "nt":
filepath = "file://" + os.path.abspath(data["filepath"])
@@ -587,7 +602,7 @@ class Base(object):
_('Cannot open downloaded file in browser'),
_('You have to set a custom browser executable '
'in your gajim settings for this to work.'),
transient_for=self.chat_control.parent_win.window)
transient_for=self.parent_win)
return
command = app.config.get('custombrowser')
command = helpers.build_command(command, filepath)
@@ -622,8 +637,8 @@ class Base(object):
# right klick
elif event.type == Gdk.EventType.BUTTON_PRESS and event.button == 3:
menu = self.make_rightclick_menu(event, data)
#menu.attach_to_widget(self.tv, None)
#menu.popup(None, None, None, event.button, event.time)
# menu.attach_to_widget(self.tv, None)
# menu.popup(None, None, None, event.button, event.time)
menu.popup_at_pointer(event)
def disconnect_from_chat_control(self):