view libervia/backend/plugins/plugin_misc_file.py @ 4219:1b5cf2ee1d86

plugin XEP-0384, XEP-0391: download missing devices list: when a peer jid was not in our roster, devices list was not retrieved, resulting in failed en/decryption. This patch does check it and download missing devices list in necessary. There is no subscription managed yet, so the list won't be updated in case of new devices, this should be addressed at some point.
author Goffi <goffi@goffi.org>
date Tue, 05 Mar 2024 17:31:36 +0100
parents 4b842c1fb686
children e11b13418ba6
line wrap: on
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#!/usr/bin/env python3


# SAT plugin for file tansfer
# Copyright (C) 2009-2021 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/>.

import os
import os.path
from functools import partial
from twisted.internet import defer
from twisted.words.protocols.jabber import jid
from libervia.backend.core.i18n import _, D_
from libervia.backend.core.constants import Const as C
from libervia.backend.core.log import getLogger
from libervia.backend.core import exceptions
from libervia.backend.tools import xml_tools
from libervia.backend.tools import stream
from libervia.backend.tools import utils
from libervia.backend.tools.common import data_format, utils as common_utils


log = getLogger(__name__)


PLUGIN_INFO = {
    C.PI_NAME: "File Tansfer",
    C.PI_IMPORT_NAME: "FILE",
    C.PI_TYPE: C.PLUG_TYPE_MISC,
    C.PI_MODES: C.PLUG_MODE_BOTH,
    C.PI_MAIN: "FilePlugin",
    C.PI_HANDLER: "no",
    C.PI_DESCRIPTION: _(
        """File Tansfer Management:
This plugin manage the various ways of sending a file, and choose the best one."""
    ),
}


SENDING = D_("Please select a file to send to {peer}")
SENDING_TITLE = D_("File sending")
CONFIRM = D_(
    '{peer} wants to send the file "{name}" to you:\n{desc}\n\nThe file has a size of '
    '{size_human}\n\nDo you accept ?'
)
CONFIRM_TITLE = D_("Confirm file transfer")
CONFIRM_OVERWRITE = D_("File {} already exists, are you sure you want to overwrite ?")
CONFIRM_OVERWRITE_TITLE = D_("File exists")
SECURITY_LIMIT = 30

PROGRESS_ID_KEY = "progress_id"


class FilePlugin:
    File = stream.SatFile

    def __init__(self, host):
        log.info(_("plugin File initialization"))
        self.host = host
        host.bridge.add_method(
            "file_send",
            ".plugin",
            in_sign="ssssss",
            out_sign="a{ss}",
            method=self._file_send,
            async_=True,
        )
        self._file_managers = []
        host.import_menu(
            (D_("Action"), D_("send file")),
            self._file_send_menu,
            security_limit=10,
            help_string=D_("Send a file"),
            type_=C.MENU_SINGLE,
        )

    def _file_send(
        self,
        peer_jid_s: str,
        filepath: str,
        name: str,
        file_desc: str,
        extra_s: str,
        profile: str = C.PROF_KEY_NONE
    ) -> defer.Deferred:
        client = self.host.get_client(profile)
        return defer.ensureDeferred(self.file_send(
            client, jid.JID(peer_jid_s), filepath, name or None, file_desc or None,
            data_format.deserialise(extra_s)
        ))

    async def file_send(
        self, client, peer_jid, filepath, filename=None, file_desc=None, extra=None
    ):
        """Send a file using best available method

        @param peer_jid(jid.JID): jid of the destinee
        @param filepath(str): absolute path to the file
        @param filename(unicode, None): name to use, or None to find it from filepath
        @param file_desc(unicode, None): description of the file
        @param profile: %(doc_profile)s
        @return (dict): action dictionary, with progress id in case of success, else
            xmlui message
        """
        if not os.path.isfile(filepath):
            raise exceptions.DataError("The given path doesn't link to a file")
        if not filename:
            filename = os.path.basename(filepath) or "_"
        for manager, priority in self._file_managers:
            if await utils.as_deferred(manager.can_handle_file_send,
                                      client, peer_jid, filepath):
                try:
                    method_name = manager.name
                except AttributeError:
                    method_name = manager.__class__.__name__
                log.info(
                    _("{name} method will be used to send the file").format(
                        name=method_name
                    )
                )
                try:
                    progress_id = await utils.as_deferred(
                        manager.file_send, client, peer_jid, filepath, filename, file_desc,
                        extra
                    )
                except Exception as e:
                    log.warning(
                        _("Can't send {filepath} to {peer_jid} with {method_name}: "
                          "{reason}").format(
                              filepath=filepath,
                              peer_jid=peer_jid,
                              method_name=method_name,
                              reason=e
                          )
                    )
                    continue
                return {"progress": progress_id}
        msg = "Can't find any method to send file to {jid}".format(jid=peer_jid.full())
        log.warning(msg)
        return {
            "xmlui": xml_tools.note(
                "Can't transfer file", msg, C.XMLUI_DATA_LVL_WARNING
            ).toXml()
        }

    def _on_file_choosed(self, peer_jid, data, profile):
        client = self.host.get_client(profile)
        cancelled = C.bool(data.get("cancelled", C.BOOL_FALSE))
        if cancelled:
            return
        path = data["path"]
        return self.file_send(client, peer_jid, path)

    def _file_send_menu(self, data, profile):
        """ XMLUI activated by menu: return file sending UI

        @param profile: %(doc_profile)s
        """
        try:
            jid_ = jid.JID(data["jid"])
        except RuntimeError:
            raise exceptions.DataError(_("Invalid JID"))

        file_choosed_id = self.host.register_callback(
            partial(self._on_file_choosed, jid_),
            with_data=True,
            one_shot=True,
        )
        xml_ui = xml_tools.XMLUI(
            C.XMLUI_DIALOG,
            dialog_opt={
                C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_FILE,
                C.XMLUI_DATA_MESS: _(SENDING).format(peer=jid_.full()),
            },
            title=_(SENDING_TITLE),
            submit_id=file_choosed_id,
        )

        return {"xmlui": xml_ui.toXml()}

    def register(self, manager, priority: int = 0) -> None:
        """Register a fileSending manager

        @param manager: object implementing can_handle_file_send, and file_send methods
        @param priority: pririoty of this manager, the higher available will be used
        """
        m_data = (manager, priority)
        if m_data in self._file_managers:
            raise exceptions.ConflictError(
                f"Manager {manager} is already registered"
            )
        if not hasattr(manager, "can_handle_file_send") or not hasattr(manager, "file_send"):
            raise ValueError(
                f'{manager} must have both "can_handle_file_send" and "file_send" methods to '
                'be registered')
        self._file_managers.append(m_data)
        self._file_managers.sort(key=lambda m: m[1], reverse=True)

    def unregister(self, manager):
        for idx, data in enumerate(self._file_managers):
            if data[0] == manager:
                break
        else:
            raise exceptions.NotFound("The file manager {manager} is not registered")
        del self._file_managers[idx]

    # Dialogs with user
    # the overwrite check is done here

    def open_file_write(self, client, file_path, transfer_data, file_data, stream_object):
        """create SatFile or FileStremaObject for the requested file and fill suitable data
        """
        if stream_object:
            assert "stream_object" not in transfer_data
            transfer_data["stream_object"] = stream.FileStreamObject(
                self.host,
                client,
                file_path,
                mode="wb",
                uid=file_data[PROGRESS_ID_KEY],
                size=file_data["size"],
                data_cb=file_data.get("data_cb"),
            )
        else:
            assert "file_obj" not in transfer_data
            transfer_data["file_obj"] = stream.SatFile(
                self.host,
                client,
                file_path,
                mode="wb",
                uid=file_data[PROGRESS_ID_KEY],
                size=file_data["size"],
                data_cb=file_data.get("data_cb"),
            )

    async def _got_confirmation(
        self, client, data, peer_jid, transfer_data, file_data, stream_object
    ):
        """Called when the permission and dest path have been received

        @param peer_jid(jid.JID): jid of the file sender
        @param transfer_data(dict): same as for [self.get_dest_dir]
        @param file_data(dict): same as for [self.get_dest_dir]
        @param stream_object(bool): same as for [self.get_dest_dir]
        return (bool): True if copy is wanted and OK
            False if user wants to cancel
            if file exists ask confirmation and call again self._getDestDir if needed
        """
        if data.get("cancelled", False):
            return False
        path = data["path"]
        file_data["file_path"] = file_path = os.path.join(path, file_data["name"])
        log.debug("destination file path set to {}".format(file_path))

        # we manage case where file already exists
        if os.path.exists(file_path):
            overwrite = await xml_tools.defer_confirm(
                self.host,
                _(CONFIRM_OVERWRITE).format(file_path),
                _(CONFIRM_OVERWRITE_TITLE),
                action_extra={
                    "from_jid": peer_jid.full(),
                    "type": C.META_TYPE_OVERWRITE,
                    "progress_id": file_data[PROGRESS_ID_KEY],
                },
                security_limit=SECURITY_LIMIT,
                profile=client.profile,
            )

            if not overwrite:
                return await self.get_dest_dir(client, peer_jid, transfer_data, file_data)

        self.open_file_write(client, file_path, transfer_data, file_data, stream_object)
        return True

    async def get_dest_dir(
        self, client, peer_jid, transfer_data, file_data, stream_object=False
    ):
        """Request confirmation and destination dir to user

        Overwrite confirmation is managed.
        if transfer is confirmed, 'file_obj' is added to transfer_data
        @param peer_jid(jid.JID): jid of the file sender
        @param filename(unicode): name of the file
        @param transfer_data(dict): data of the transfer session,
            it will be only used to store the file_obj.
            "file_obj" (or "stream_object") key *MUST NOT* exist before using get_dest_dir
        @param file_data(dict): information about the file to be transfered
            It MUST contain the following keys:
                - peer_jid (jid.JID): other peer jid
                - name (unicode): name of the file to trasnsfer
                    the name must not be empty or contain a "/" character
                - size (int): size of the file
                - desc (unicode): description of the file
                - progress_id (unicode): id to use for progression
            It *MUST NOT* contain the "peer" key
            It may contain:
                - data_cb (callable): method called on each data read/write
            "file_path" will be added to this dict once destination selected
            "size_human" will also be added with human readable file size
        @param stream_object(bool): if True, a stream_object will be used instead of file_obj
            a stream.FileStreamObject will be used
        return: True if transfer is accepted
        """
        cont, ret_value = await self.host.trigger.async_return_point(
            "FILE_getDestDir", client, peer_jid, transfer_data, file_data, stream_object
        )
        if not cont:
            return ret_value
        filename = file_data["name"]
        assert filename and not "/" in filename
        assert PROGRESS_ID_KEY in file_data
        # human readable size
        file_data["size_human"] = common_utils.get_human_size(file_data["size"])
        resp_data = await xml_tools.defer_dialog(
            self.host,
            _(CONFIRM).format(peer=peer_jid.full(), **file_data),
            _(CONFIRM_TITLE),
            type_=C.XMLUI_DIALOG_FILE,
            options={C.XMLUI_DATA_FILETYPE: C.XMLUI_DATA_FILETYPE_DIR},
            action_extra={
                "from_jid": peer_jid.full(),
                "type": C.META_TYPE_FILE,
                "progress_id": file_data[PROGRESS_ID_KEY],
            },
            security_limit=SECURITY_LIMIT,
            profile=client.profile,
        )

        accepted = await self._got_confirmation(
            client,
            resp_data,
            peer_jid,
            transfer_data,
            file_data,
            stream_object,
        )
        return accepted