view cagou/plugins/plugin_transfer_android_gallery.py @ 233:ba8f3a4a5ac7

plugin chat: e2e encryption improvments: OTR buttons has been replaced with a more generic one, which use new encryption mechanisms to retrieve all current encryption algorithms (+ a button for plain text). "refresh" and "authentify" buttons for OTR are temporarily removed. Encryption state is checked on chat widget startup, and current encryption method is selected (it will appear with a different background in encryption menu).
author Goffi <goffi@goffi.org>
date Sat, 11 Aug 2018 18:34:16 +0200
parents cd99f70ea592
children 1b835bcfa663
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#!/usr/bin/python
# -*- coding: utf-8 -*-

# Cagou: desktop/mobile frontend for Salut à Toi XMPP client
# Copyright (C) 2016-2018 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


from sat.core import log as logging
log = logging.getLogger(__name__)
from sat.core.i18n import _
import sys
import tempfile
import os
import os.path
if sys.platform=="android":
    from jnius import autoclass
    from android import activity, mActivity

    Intent = autoclass('android.content.Intent')
    OpenableColumns = autoclass('android.provider.OpenableColumns')
    PHOTO_GALLERY = 1
    RESULT_OK = -1



PLUGIN_INFO = {
    "name": _(u"gallery"),
    "main": "AndroidGallery",
    "platforms": ('android',),
    "external": True,
    "description": _(u"upload a photo from photo gallery"),
    "icon_medium": u"{media}/icons/muchoslava/png/gallery_50.png",
}


class AndroidGallery(object):

    def __init__(self, callback, cancel_cb):
        self.callback = callback
        self.cancel_cb = cancel_cb
        activity.bind(on_activity_result=self.on_activity_result)
        intent = Intent()
        intent.setType('image/*')
        intent.setAction(Intent.ACTION_GET_CONTENT)
        mActivity.startActivityForResult(intent, PHOTO_GALLERY);

    def on_activity_result(self, requestCode, resultCode, data):
        # TODO: move file dump to a thread or use async callbacks during file writting
        if requestCode == PHOTO_GALLERY and resultCode == RESULT_OK:
            if data is None:
                log.warning(u"No data found in activity result")
                self.cancel_cb(self, None)
                return
            uri = data.getData()

            # we get filename in the way explained at https://developer.android.com/training/secure-file-sharing/retrieve-info.html
            cursor = mActivity.getContentResolver().query(uri, None, None, None, None )
            name_idx = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
            cursor.moveToFirst()
            filename = cursor.getString(name_idx)

            # we save data in a temporary file that we send to callback
            # the file will be removed once upload is done (or if an error happens)
            input_stream = mActivity.getContentResolver().openInputStream(uri)
            tmp_dir = tempfile.mkdtemp()
            tmp_file = os.path.join(tmp_dir, filename)
            def cleaning():
                os.unlink(tmp_file)
                os.rmdir(tmp_dir)
                log.debug(u'temporary file cleaned')
            buff = bytearray(4096)
            with open(tmp_file, 'wb') as f:
                while True:
                    ret = input_stream.read(buff, 0, 4096)
                    if ret != -1:
                        f.write(buff)
                    else:
                        break
            input_stream.close()
            self.callback(tmp_file, cleaning)
        else:
            self.cancel_cb(self, None)