url_image_preview/ 0000755 0001755 0001755 00000000000 13257013252 014315 5 ustar debacle debacle url_image_preview/url_image_preview.py 0000644 0001755 0001755 00000072053 13257013252 020403 0 ustar debacle debacle # -*- 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 .
##
import os
import hashlib
import binascii
import logging
from urllib.parse import urlparse
from io import BytesIO
import shutil
from functools import partial
from gi.repository import Gtk, Gdk, GLib, GdkPixbuf
from gajim.common import app
from gajim.common import helpers
from gajim.common import configpaths
from gajim import dialogs
from gajim import gtkgui_helpers
from gajim.plugins import GajimPlugin
from gajim.plugins.helpers import log_calls
from url_image_preview.http_functions import get_http_head, get_http_file
from url_image_preview.config_dialog import UrlImagePreviewConfigDialog
from url_image_preview.resize_gif import resize_gif
log = logging.getLogger('gajim.plugin_system.preview')
PILLOW_AVAILABLE = True
try:
from PIL import Image
except:
log.debug('Pillow not available')
PILLOW_AVAILABLE = False
try:
if os.name == 'nt':
from cryptography.hazmat.backends.openssl import backend
else:
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.ciphers import Cipher
from cryptography.hazmat.primitives.ciphers import algorithms
from cryptography.hazmat.primitives.ciphers.modes import GCM
decryption_available = True
except Exception:
DEP_MSG = 'For preview of encrypted images, ' \
'please install python-cryptography!'
log.exception('Error')
log.info('Decryption/Encryption disabled due to errors')
decryption_available = False
ACCEPTED_MIME_TYPES = ('image/png', 'image/jpeg', 'image/gif', 'image/raw',
'image/svg+xml', 'image/x-ms-bmp')
class UrlImagePreviewPlugin(GajimPlugin):
@log_calls('UrlImagePreviewPlugin')
def init(self):
if not decryption_available:
self.available_text = DEP_MSG
self.config_dialog = partial(UrlImagePreviewConfigDialog, self)
self.gui_extension_points = {
'chat_control_base': (self.connect_with_chat_control,
self.disconnect_from_chat_control),
'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'),
'ANONYMOUS_MUC': (False, ''),
'GEO_PREVIEW_PROVIDER': ('Google', 'Google Maps'),
'VERIFY': (True, ''),}
self.controls = {}
self.history_window_control = None
@log_calls('UrlImagePreviewPlugin')
def connect_with_chat_control(self, chat_control):
account = chat_control.contact.account.name
jid = chat_control.contact.jid
if account not in self.controls:
self.controls[account] = {}
self.controls[account][jid] = Base(self, chat_control.conv_textview)
@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_handlers()
del self.controls[account][jid]
@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)
@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].textview != tv:
continue
self.controls[account][jid].print_real_text(
real_text, text_tags, graphics, iter_, additional_data)
return
class Base(object):
def __init__(self, plugin, textview):
self.plugin = plugin
self.textview = textview
self.handlers = {}
self.directory = os.path.join(configpaths.gajimpaths['MY_DATA'],
'downloads')
self.thumbpath = os.path.join(configpaths.gajimpaths['MY_CACHE'],
'downloads.thumb')
try:
self._create_path(self.directory)
self._create_path(self.thumbpath)
except Exception:
log.error("Error creating download and/or thumbnail folder!")
raise
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()):
if self.handlers[i].handler_is_connected(i):
self.handlers[i].disconnect(i)
del self.handlers[i]
def print_real_text(self, real_text, text_tags, graphics, iter_,
additional_data):
urlparts = urlparse(real_text)
if urlparts.scheme == "geo":
if self.plugin.config['GEO_PREVIEW_PROVIDER'] == 'no_preview':
return
elif (urlparts.scheme not in ["https", "aesgcm"] or not urlparts.netloc):
if urlparts.scheme != "geo":
log.info("Not accepting URL scheme '%s' for image preview: %s",
urlparts.scheme, real_text)
return
try:
oob_url = additional_data["gajim"]["oob_url"]
except (KeyError, AttributeError):
oob_url = None
# allow aesgcm uris without oob marker (aesgcm uris are always
# httpupload filetransfers)
if urlparts.scheme != "aesgcm" and real_text != oob_url:
if urlparts.scheme != "geo":
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)
self.textview.plugin_modified = True
buffer_ = self.textview.tv.get_buffer()
if not iter_:
iter_ = buffer_.get_end_iter()
# 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_, real_text,
*[(ttt.lookup(t) if isinstance(t, str) else t) for t in ["url"]])
repl_end = buffer_.create_mark(None, iter_, True)
if not real_text.startswith('geo:'):
weburl = real_text
filename = os.path.basename(urlparts.path)
ext = os.path.splitext(filename)[1]
name = os.path.splitext(filename)[0]
namehash = hashlib.sha1(real_text.encode('utf-8')).hexdigest()
newfilename = name + '_' + namehash + ext
thumbfilename = name + '_' + namehash + '_thumb_' \
+ str(self.plugin.config['PREVIEW_SIZE']) + ext
filepath = os.path.join(self.directory, newfilename)
thumbpath = os.path.join(self.thumbpath, thumbfilename)
filepaths = [filepath, thumbpath]
key = ''
iv = ''
encrypted = False
if urlparts.fragment:
fragment = binascii.unhexlify(urlparts.fragment)
key = fragment[16:]
iv = fragment[:16]
if len(key) == 32 and len(iv) == 16:
encrypted = True
if not encrypted:
key = fragment[12:]
iv = fragment[:12]
if len(key) == 32 and len(iv) == 12:
encrypted = True
# Handle geo:-URIs
if real_text.startswith('geo:'):
if self.plugin.config['GEO_PREVIEW_PROVIDER'] == 'no_preview':
return
size = self.plugin.config['PREVIEW_SIZE']
geo_provider = self.plugin.config['GEO_PREVIEW_PROVIDER']
key = ''
iv = ''
encrypted = False
ext = '.png'
color = 'blue'
zoom = 16
location = real_text[4:]
lat, _, lon = location.partition(',')
if lon == '':
return
filename = 'location_' + geo_provider + '_' \
+ location.replace(',', '_').replace('.', '-')
newfilename = filename + ext
thumbfilename = filename + '_thumb_' \
+ str(self.plugin.config['PREVIEW_SIZE']) + ext
filepath = os.path.join(self.directory, newfilename)
thumbpath = os.path.join(self.thumbpath, thumbfilename)
filepaths = [filepath, thumbpath]
# Google
if geo_provider == 'Google':
url = 'https://maps.googleapis.com/maps/api/staticmap?' \
'center={}&zoom={}&size={}x{}&markers=color:{}' \
'|label:.|{}'.format(location, zoom, size, size,
color, location)
weburl = 'https://www.google.com/maps/place/{}' \
.format(location)
real_text = url
else:
# OpenStreetMap / MapQuest
apikey = 'F7x36jLVv2hiANVAXmhwvUB044XvGASh'
url = 'https://open.mapquestapi.com/staticmap/v4/' \
'getmap?key={}¢er={}&zoom={}&size={},{}&type=map' \
'&imagetype=png&pois={},{}&scalebar=false' \
.format(apikey, location, zoom, size, size, color,
location)
weburl = 'http://www.openstreetmap.org/' \
'?mlat={}&mlon={}#map={}/{}/{}&layers=N' \
.format(lat, lon, zoom, lat, lon)
real_text = url
# file exists but thumbnail got deleted
if os.path.exists(filepath) and not os.path.exists(thumbpath):
if urlparts.scheme == 'geo':
real_text = weburl
with open(filepath, 'rb') as f:
mem = f.read()
app.thread_interface(
self._save_thumbnail, [thumbpath, mem],
self._update_img, [real_text, repl_start,
repl_end, filepath, encrypted])
# display thumbnail if already downloadeded
# (but only if file also exists)
elif os.path.exists(filepath) and os.path.exists(thumbpath):
if urlparts.scheme == 'geo':
real_text = weburl
app.thread_interface(
self._load_thumbnail, [thumbpath],
self._update_img, [real_text, repl_start,
repl_end, filepath, encrypted])
# or download file, calculate thumbnail and finally display it
else:
if encrypted and not decryption_available:
log.debug('Please install Crytography to decrypt pictures')
else:
# First get the http head request
# which does not fetch data, just headers
# then check the mime type and filesize
if urlparts.scheme == 'aesgcm':
real_text = 'https://' + real_text[9:]
verify = self.plugin.config['VERIFY']
app.thread_interface(
get_http_head, [self.textview.account, real_text, verify],
self._check_mime_size, [real_text, weburl, repl_start,
repl_end, filepaths, key, iv,
encrypted])
def _save_thumbnail(self, thumbpath, mem):
size = self.plugin.config['PREVIEW_SIZE']
try:
loader = GdkPixbuf.PixbufLoader()
loader.write(mem)
loader.close()
if loader.get_format().get_name() == 'gif':
pixbuf = loader.get_animation()
else:
pixbuf = loader.get_pixbuf()
except GLib.GError as error:
log.info('Failed to load image using Gdk.Pixbuf')
log.debug(error)
if not PILLOW_AVAILABLE:
log.info('Pillow not available')
return
# Try Pillow
image = Image.open(BytesIO(mem)).convert("RGBA")
array = GLib.Bytes.new(image.tobytes())
width, height = image.size
pixbuf = GdkPixbuf.Pixbuf.new_from_bytes(
array, GdkPixbuf.Colorspace.RGB, True,
8, width, height, width * 4)
try:
self._create_path(os.path.dirname(thumbpath))
thumbnail = pixbuf
if isinstance(pixbuf, GdkPixbuf.PixbufAnimation):
if size < pixbuf.get_width() or size < pixbuf.get_height():
resize_gif(mem, thumbpath, (size, size))
thumbnail = self._load_thumbnail(thumbpath)
else:
self._write_file(thumbpath, mem)
else:
width, height = self._get_thumbnail_size(pixbuf, size)
thumbnail = pixbuf.scale_simple(
width, height, GdkPixbuf.InterpType.BILINEAR)
thumbnail.savev(thumbpath, 'png', [], [])
except Exception as error:
dialogs.ErrorDialog(
_('Could not save file'),
_('Exception raised while saving thumbnail '
'for image file (see error log for more '
'information)'),
transient_for=app.app.get_active_window())
log.exception(error)
return
return thumbnail
@staticmethod
def _get_thumbnail_size(pixbuf, size):
# Calculates the new thumbnail size while preserving the aspect ratio
image_width = pixbuf.get_width()
image_height = pixbuf.get_height()
if image_width > image_height:
if image_width > size:
image_height = int(size / float(image_width) * image_height)
image_width = int(size)
else:
if image_height > size:
image_width = int(size / float(image_height) * image_width)
image_height = int(size)
return image_width, image_height
@staticmethod
def _load_thumbnail(thumbpath):
ext = os.path.splitext(thumbpath)[1]
if ext == '.gif':
return GdkPixbuf.PixbufAnimation.new_from_file(thumbpath)
return GdkPixbuf.Pixbuf.new_from_file(thumbpath)
@staticmethod
def _write_file(path, 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)
raise
def _get_at_end(self):
try:
# Gajim 1.0.0
return self.textview.at_the_end()
except AttributeError:
# Gajim 1.0.1
return self.textview.autoscroll
def _scroll_to_end(self):
try:
# Gajim 1.0.0
self.textview.scroll_to_end_iter()
except AttributeError:
# Gajim 1.0.1
self.textview.scroll_to_end()
def _update_img(self, pixbuf, url, repl_start, repl_end,
filepath, encrypted):
if pixbuf is None:
# If image could not be downloaded, URL is already displayed
log.error('Could not download image for URL: %s', url)
return
urlparts = urlparse(url)
filename = os.path.basename(urlparts.path)
if os.path.basename(filepath).startswith('location_'):
filename = os.path.basename(filepath)
event_box = Gtk.EventBox()
event_box.connect('button-press-event', self.on_button_press_event,
filepath, filename, url, encrypted)
event_box.connect('enter-notify-event', self.on_enter_event)
event_box.connect('leave-notify-event', self.on_leave_event)
def add_to_textview():
try:
at_end = self._get_at_end()
buffer_ = repl_start.get_buffer()
iter_ = buffer_.get_iter_at_mark(repl_start)
buffer_.insert(iter_, "\n")
anchor = buffer_.create_child_anchor(iter_)
anchor.plaintext = url
if isinstance(pixbuf, GdkPixbuf.PixbufAnimation):
image = Gtk.Image.new_from_animation(pixbuf)
else:
image = Gtk.Image.new_from_pixbuf(pixbuf)
css = '''#Preview {
box-shadow: 0px 0px 3px 0px alpha(@theme_text_color, 0.2);
margin: 5px 10px 5px 10px; }'''
gtkgui_helpers.add_css_to_widget(image, css)
image.set_name('Preview')
event_box.set_tooltip_text(url)
event_box.add(image)
event_box.show_all()
self.textview.tv.add_child_at_anchor(event_box, anchor)
buffer_.delete(iter_,
buffer_.get_iter_at_mark(repl_end))
if at_end:
self._scroll_to_end()
except Exception as ex:
log.exception("Exception while loading %s: %s", url, ex)
return False
# add to mainloop --> make call threadsafe
GLib.idle_add(add_to_textview)
def _check_mime_size(self, tuple_arg,
url, weburl, repl_start, repl_end, filepaths,
key, iv, encrypted):
file_mime, file_size = tuple_arg
# Check if mime type is acceptable
if (file_mime == '' and file_size == 0) or file_mime is None:
log.info("Failed to load HEAD Request for URL: '%s'"
"(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)
# URL is already displayed
return
# Check if file size is acceptable
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,
'verify': self.plugin.config['VERIFY'],
'max_size': max_size,
'filepaths': filepaths,
'key': key,
'iv': iv}
app.thread_interface(
self._download_image, [self.textview.account,
attributes, encrypted],
self._update_img, [weburl, repl_start, repl_end,
filepaths[0], encrypted])
def _download_image(self, account, attributes, encrypted):
filepath = attributes['filepaths'][0]
thumbpath = attributes['filepaths'][1]
key = attributes['key']
iv = attributes['iv']
mem, alt = get_http_file(account, attributes)
# Decrypt file if necessary
if encrypted:
mem = self._aes_decrypt_fast(key, iv, mem)
try:
# Write file to harddisk
self._write_file(filepath, mem)
except Exception as e:
dialogs.ErrorDialog(
_('Could not save file'),
_('Exception raised while saving image file'
' (see error log for more information)'),
transient_for=app.app.get_active_window())
log.error(str(e))
# Create thumbnail, write it to harddisk and return it
return self._save_thumbnail(thumbpath, mem)
def _create_path(self, folder):
if os.path.exists(folder):
return
log.debug("creating folder '%s'" % folder)
os.mkdir(folder, 0o700)
def _aes_decrypt_fast(self, key, iv, payload):
# Use AES128 GCM with the given key and iv to decrypt the payload.
if os.name == 'nt':
be = backend
else:
be = default_backend()
data = payload[:-16]
tag = payload[-16:]
decryptor = Cipher(
algorithms.AES(key),
GCM(iv, tag=tag),
backend=be).decryptor()
return decryptor.update(data) + decryptor.finalize()
def make_rightclick_menu(self, event, data):
xml = Gtk.Builder()
xml.set_translation_domain('gajim_plugins')
xml.add_from_file(self.plugin.local_file_path('context_menu.ui'))
menu = xml.get_object('context_menu')
open_menuitem = xml.get_object('open_menuitem')
save_as_menuitem = xml.get_object('save_as_menuitem')
copy_link_location_menuitem = \
xml.get_object('copy_link_location_menuitem')
open_link_in_browser_menuitem = \
xml.get_object('open_link_in_browser_menuitem')
open_file_in_browser_menuitem = \
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') \
or app.config.get('custombrowser') == '':
extras_separator.hide()
open_file_in_browser_menuitem.hide()
id_ = open_menuitem.connect(
'activate', self.on_open_menuitem_activate, data)
self.handlers[id_] = open_menuitem
id_ = save_as_menuitem.connect(
'activate', self.on_save_as_menuitem_activate, data)
self.handlers[id_] = save_as_menuitem
id_ = copy_link_location_menuitem.connect(
'activate', self.on_copy_link_location_menuitem_activate, data)
self.handlers[id_] = copy_link_location_menuitem
id_ = open_link_in_browser_menuitem.connect(
'activate', self.on_open_link_in_browser_menuitem_activate, data)
self.handlers[id_] = open_link_in_browser_menuitem
id_ = open_file_in_browser_menuitem.connect(
'activate', self.on_open_file_in_browser_menuitem_activate, data)
self.handlers[id_] = open_file_in_browser_menuitem
return menu
def on_open_menuitem_activate(self, menu, data):
filepath = data["filepath"]
original_filename = data["original_filename"]
url = data["url"]
if original_filename.startswith('location_'):
helpers.launch_browser_mailer('url', url)
return
helpers.launch_file_manager(filepath)
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
shutil.copy(filepath, target_path)
dialog.destroy()
def on_ok(widget):
target_path = dialog.get_filename()
if os.path.exists(target_path):
# check if we have write permissions
if not os.access(target_path, os.W_OK):
file_name = os.path.basename(target_path)
dialogs.ErrorDialog(
_('Cannot overwrite existing file "%s"') % file_name,
_('A file with this name already exists and you do '
'not have permission to overwrite it.'))
return
dialog2 = dialogs.FTOverwriteConfirmationDialog(
_('This file already exists'),
_('What do you want to do?'),
propose_resume=False,
on_response=(on_continue, target_path),
transient_for=dialog)
dialog2.set_destroy_with_parent(True)
else:
dirname = os.path.dirname(target_path)
if not os.access(dirname, os.W_OK):
dialogs.ErrorDialog(
_('Directory "%s" is not writable') % dirname,
_('You do not have permission to '
'create files in this directory.'))
return
on_continue(0, target_path)
def on_cancel(widget):
dialog.destroy()
dialog = dialogs.FileChooserDialog(
title_text=_('Save Image as...'),
action=Gtk.FileChooserAction.SAVE,
buttons=(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_SAVE, Gtk.ResponseType.OK),
default_response=Gtk.ResponseType.OK,
current_folder=app.config.get('last_save_dir'),
on_response_ok=on_ok,
on_response_cancel=on_cancel)
dialog.set_current_name(original_filename)
dialog.connect('delete-event', lambda widget, event:
on_cancel(widget))
def on_copy_link_location_menuitem_activate(self, menu, data):
url = data["url"]
clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
clipboard.set_text(url, -1)
clipboard.store()
def on_open_link_in_browser_menuitem_activate(self, menu, data):
url = data["url"]
if data["encrypted"]:
dialogs.ErrorDialog(
_('Encrypted file'),
_('You cannot open encrypted files in your '
'browser directly. Try "Open Downloaded File '
'in Browser" instead.'),
transient_for=app.app.get_active_window())
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"])
else:
filepath = "file://" + data["filepath"]
if app.config.get('autodetect_browser_mailer') \
or app.config.get('custombrowser') == '':
dialogs.ErrorDialog(
_('Cannot open downloaded file in browser'),
_('You have to set a custom browser executable '
'in your gajim settings for this to work.'),
transient_for=app.app.get_active_window())
return
command = app.config.get('custombrowser')
command = helpers.build_command(command, filepath)
try:
helpers.exec_command(command)
except Exception:
pass
# Change mouse pointer to HAND2 when
# mouse enter the eventbox with the image
def on_enter_event(self, eb, event):
self.textview.tv.get_window(
Gtk.TextWindowType.TEXT).set_cursor(Gdk.Cursor(Gdk.CursorType.HAND2))
# Change mouse pointer to default when mouse leaves the eventbox
def on_leave_event(self, eb, event):
self.textview.tv.get_window(
Gtk.TextWindowType.TEXT).set_cursor(Gdk.Cursor(Gdk.CursorType.XTERM))
def on_button_press_event(self, eb, event, filepath,
original_filename, url, encrypted):
data = {"filepath": filepath,
"original_filename": original_filename,
"url": url,
"encrypted": encrypted}
# left click
if event.type == Gdk.EventType.BUTTON_PRESS and event.button == 1:
method = getattr(self, "on_"
+ self.plugin.config['LEFTCLICK_ACTION']
+ "_activate")
method(event, data)
# 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.popup_at_pointer(event)
def disconnect_from_chat_control(self):
pass
url_image_preview/http_functions.py 0000644 0001755 0001755 00000007167 13257013252 017751 0 ustar debacle debacle # -*- 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 .
##
import urllib.request as urllib2
import socket
import re
import ssl
from gajim.common import app
import logging
import os
if os.name == 'nt':
import certifi
log = logging.getLogger('gajim.plugin_system.preview.http_functions')
def get_http_head(account, url, verify):
return _get_http_head_direct(url, verify)
def get_http_file(account, attrs):
return _get_http_direct(attrs)
def _get_http_head_direct(url, verify):
log.info('Head request direct for URL: %s', url)
try:
req = urllib2.Request(url)
req.get_method = lambda: 'HEAD'
req.add_header('User-Agent', 'Gajim %s' % app.version)
if not verify:
context = ssl.create_default_context()
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE
log.warning('CERT Verification disabled')
f = urllib2.urlopen(req, timeout=30, context=context)
else:
if os.name == 'nt':
f = urllib2.urlopen(req, cafile=certifi.where())
else:
f = urllib2.urlopen(req)
except Exception as ex:
log.debug('Error', exc_info=True)
return ('', 0)
ctype = f.headers['Content-Type']
clen = f.headers['Content-Length']
try:
clen = int(clen)
except (TypeError, ValueError):
pass
return (ctype, clen)
def _get_http_direct(attrs):
"""
Download a file. This function should
be launched in a separated thread.
"""
log.info('Get request direct for URL: %s', attrs['src'])
mem, alt, max_size = b'', '', 2 * 1024 * 1024
if 'max_size' in attrs:
max_size = attrs['max_size']
try:
req = urllib2.Request(attrs['src'])
req.add_header('User-Agent', 'Gajim ' + app.version)
if not attrs['verify']:
context = ssl.create_default_context()
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE
log.warning('CERT Verification disabled')
f = urllib2.urlopen(req, timeout=30, context=context)
else:
if os.name == 'nt':
f = urllib2.urlopen(req, cafile=certifi.where())
else:
f = urllib2.urlopen(req)
except Exception as ex:
log.debug('Error', exc_info=True)
pixbuf = None
alt = attrs.get('alt', 'Broken image')
else:
while True:
try:
temp = f.read(100)
except socket.timeout as ex:
log.debug('Timeout loading image %s', attrs['src'] + str(ex))
alt = attrs.get('alt', '')
if alt:
alt += '\n'
alt += _('Timeout loading image')
break
if temp:
mem += temp
else:
break
if len(mem) > max_size:
alt = attrs.get('alt', '')
if alt:
alt += '\n'
alt += _('Image is too big')
break
return (mem, alt)
url_image_preview/url_image_preview.png 0000644 0001755 0001755 00000001254 13257013252 020532 0 ustar debacle debacle PNG
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x/m_KIXu GԟQ^^֮]c K|CD]ơC2u?NM e#""b[6|C߅PJ 2T{Dj IENDB` url_image_preview/config_dialog.py 0000644 0001755 0001755 00000011434 13257013252 017456 0 ustar debacle debacle # -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Philipp Hörist
#
# 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, either version 3 of the License, or
# (at your option) any later version.
#
# 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 .
from gi.repository import GObject
from gi.repository import Gtk
from gajim.options_dialog import OptionsDialog, GenericOption, SpinOption
from gajim.common.const import Option, OptionType, OptionKind
class UrlImagePreviewConfigDialog(OptionsDialog):
def __init__(self, plugin, parent):
sizes = [('256 KiB', '262144'),
('512 KiB', '524288'),
('1 MiB', '1048576'),
('5 MiB', '5242880'),
('10 MiB', '10485760')]
actions = [
(_('Open'), 'open_menuitem'),
(_('Save as'), 'save_as_menuitem'),
(_('Copy Link Location'), 'copy_link_location_menuitem'),
(_('Open Link in Browser'), 'open_link_in_browser_menuitem'),
(_('Open File in Browser'), 'open_file_in_browser_menuitem')]
geo_providers = [
(_('No map preview'), 'no_preview'),
('Google Maps', 'Google'),
('OpenStreetMap', 'OSM')]
self.plugin = plugin
options = [
Option('PreviewSizeSpinOption', _('Preview size'),
OptionType.VALUE, self.plugin.config['PREVIEW_SIZE'],
callback=self.on_option, data='PREVIEW_SIZE',
props={'range_': (100, 1000)}),
Option('PreviewComboOption', _('Accepted filesize'),
OptionType.VALUE, self.plugin.config['MAX_FILE_SIZE'],
callback=self.on_option, data='MAX_FILE_SIZE',
props={'items': sizes,
'plugin': self.plugin}),
Option('PreviewComboOption', _('Left click action'),
OptionType.VALUE, self.plugin.config['LEFTCLICK_ACTION'],
callback=self.on_option, data='LEFTCLICK_ACTION',
props={'items': actions,
'plugin': self.plugin}),
Option('PreviewComboOption', _('Map service for preview'),
OptionType.VALUE, self.plugin.config['GEO_PREVIEW_PROVIDER'],
callback=self.on_option, data='GEO_PREVIEW_PROVIDER',
props={'items': geo_providers,
'plugin': self.plugin}),
Option(OptionKind.SWITCH, _('Enable HTTPS Verification'),
OptionType.VALUE, self.plugin.config['VERIFY'],
callback=self.on_option, data='VERIFY'),
]
OptionsDialog.__init__(self, parent, _('UrlImagePreview Options'),
Gtk.DialogFlags.MODAL, options, None,
extend=[
('PreviewComboOption', ComboOption),
('PreviewSizeSpinOption', SizeSpinOption)])
def on_option(self, value, data):
self.plugin.config[data] = value
class SizeSpinOption(SpinOption):
__gproperties__ = {
"option-value": (int, 'Size', '', 100, 1000, 300,
GObject.ParamFlags.READWRITE), }
def __init__(self, *args, **kwargs):
SpinOption.__init__(self, *args, **kwargs)
class ComboOption(GenericOption):
__gproperties__ = {
"option-value": (str, 'Value', '', '',
GObject.ParamFlags.READWRITE), }
def __init__(self, *args, items, plugin):
GenericOption.__init__(self, *args)
self.plugin = plugin
self.combo = Gtk.ComboBox()
text_renderer = Gtk.CellRendererText()
self.combo.pack_start(text_renderer, True)
self.combo.add_attribute(text_renderer, 'text', 0)
self.store = Gtk.ListStore(str, str)
for item in items:
self.store.append(item)
self.combo.set_model(self.store)
self.combo.set_id_column(1)
self.combo.set_active_id(str(self.option_value))
self.combo.connect('changed', self.on_value_change)
self.combo.set_valign(Gtk.Align.CENTER)
self.option_box.pack_start(self.combo, True, True, 0)
self.show_all()
def on_value_change(self, combo):
self.set_value(combo.get_active_id())
def on_row_activated(self):
pass
url_image_preview/resize_gif.py 0000644 0001755 0001755 00000004661 13257013252 017024 0 ustar debacle debacle from io import BytesIO
from PIL import Image
def resize_gif(mem, path, resize_to):
frames = extract_and_resize_frames(mem, resize_to)
if len(frames) == 1:
frames[0].save(path, optimize=True)
else:
frames[0].save(path,
optimize=True,
save_all=True,
append_images=frames[1:],
loop=1000)
def analyse_image(mem):
"""
Pre-process pass over the image to determine the mode (full or additive).
Necessary as assessing single frames isn't reliable. Need to know the mode
before processing all frames.
"""
image = Image.open(BytesIO(mem))
results = {
'size': image.size,
'mode': 'full',
}
try:
while True:
if image.tile:
tile = image.tile[0]
update_region = tile[1]
update_region_dimensions = update_region[2:]
if update_region_dimensions != image.size:
results['mode'] = 'partial'
break
image.seek(image.tell() + 1)
except EOFError:
pass
return results
def extract_and_resize_frames(mem, resize_to):
mode = analyse_image(mem)['mode']
image = Image.open(BytesIO(mem))
i = 0
palette = image.getpalette()
last_frame = image.convert('RGBA')
frames = []
try:
while True:
'''
If the GIF uses local colour tables,
each frame will have its own palette.
If not, we need to apply the global palette to the new frame.
'''
if not image.getpalette():
image.putpalette(palette)
new_frame = Image.new('RGBA', image.size)
'''
Is this file a "partial"-mode GIF where frames update a region
of a different size to the entire image?
If so, we need to construct the new frame by
pasting it on top of the preceding frames.
'''
if mode == 'partial':
new_frame.paste(last_frame)
new_frame.paste(image, (0, 0), image.convert('RGBA'))
# This method preservs aspect ratio
new_frame.thumbnail(resize_to, Image.ANTIALIAS)
frames.append(new_frame)
i += 1
last_frame = new_frame
image.seek(image.tell() + 1)
except EOFError:
pass
return frames
url_image_preview/__init__.py 0000644 0001755 0001755 00000000107 13257013252 016424 0 ustar debacle debacle # simple redirect
from .url_image_preview import UrlImagePreviewPlugin
url_image_preview/manifest.ini 0000644 0001755 0001755 00000000656 13257013252 016633 0 ustar debacle debacle [info]
name: Url image preview
short_name: url_image_preview
version: 2.1.7
description: Displays a preview of links to images
authors = Denis Fomin
Yann Leboulanger
Anders Sandblad
Thilo Molitor
Philipp Hoerist
homepage = https://dev.gajim.org/gajim/gajim-plugins/wikis/UrlImagePreviewPlugin
min_gajim_version: 0.16.11
url_image_preview/context_menu.ui 0000644 0001755 0001755 00000010031 13257013252 017357 0 ustar debacle debacle