--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libervia/cli/cmd_pipe.py	Fri Jun 02 14:54:26 2023 +0200
@@ -0,0 +1,163 @@
+#!/usr/bin/env python3
+
+
+# Libervia CLI
+# 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 asyncio
+import errno
+from functools import partial
+import socket
+import sys
+
+from libervia.backend.core.i18n import _
+from libervia.backend.tools.common import data_format
+from libervia.cli import base
+from libervia.cli import xmlui_manager
+from libervia.cli.constants import Const as C
+from libervia.frontends.tools import jid
+
+__commands__ = ["Pipe"]
+
+START_PORT = 9999
+
+
+class PipeOut(base.CommandBase):
+    def __init__(self, host):
+        super(PipeOut, self).__init__(host, "out", help=_("send a pipe a stream"))
+
+    def add_parser_options(self):
+        self.parser.add_argument(
+            "jid", help=_("the destination jid")
+        )
+
+    async def start(self):
+        """ Create named pipe, and send stdin to it """
+        try:
+            port = await self.host.bridge.stream_out(
+                await self.host.get_full_jid(self.args.jid),
+                self.profile,
+            )
+        except Exception as e:
+            self.disp(f"can't start stream: {e}", error=True)
+            self.host.quit(C.EXIT_BRIDGE_ERRBACK)
+        else:
+            # FIXME: we use temporarily blocking code here, as it simplify
+            #        asyncio port: "loop.connect_read_pipe(lambda: reader_protocol,
+            #        sys.stdin.buffer)" doesn't work properly when a file is piped in
+            #        (we get a "ValueError: Pipe transport is for pipes/sockets only.")
+            #        while it's working well for simple text sending.
+
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.connect(("127.0.0.1", int(port)))
+
+            while True:
+                buf = sys.stdin.buffer.read(4096)
+                if not buf:
+                    break
+                try:
+                    s.sendall(buf)
+                except socket.error as e:
+                    if e.errno == errno.EPIPE:
+                        sys.stderr.write(f"e\n")
+                        self.host.quit(1)
+                    else:
+                        raise e
+            self.host.quit()
+
+
+async def handle_stream_in(reader, writer, host):
+    """Write all received data to stdout"""
+    while True:
+        data = await reader.read(4096)
+        if not data:
+            break
+        sys.stdout.buffer.write(data)
+        try:
+            sys.stdout.flush()
+        except IOError as e:
+            sys.stderr.write(f"{e}\n")
+            break
+    host.quit_from_signal()
+
+
+class PipeIn(base.CommandAnswering):
+    def __init__(self, host):
+        super(PipeIn, self).__init__(host, "in", help=_("receive a pipe stream"))
+        self.action_callbacks = {"STREAM": self.on_stream_action}
+
+    def add_parser_options(self):
+        self.parser.add_argument(
+            "jids",
+            nargs="*",
+            help=_('Jids accepted (none means "accept everything")'),
+        )
+
+    def get_xmlui_id(self, action_data):
+        try:
+            xml_ui = action_data["xmlui"]
+        except KeyError:
+            self.disp(_("Action has no XMLUI"), 1)
+        else:
+            ui = xmlui_manager.create(self.host, xml_ui)
+            if not ui.submit_id:
+                self.disp(_("Invalid XMLUI received"), error=True)
+                self.quit_from_signal(C.EXIT_INTERNAL_ERROR)
+            return ui.submit_id
+
+    async def on_stream_action(self, action_data, action_id, security_limit, profile):
+        xmlui_id = self.get_xmlui_id(action_data)
+        if xmlui_id is None:
+            self.host.quit_from_signal(C.EXIT_ERROR)
+        try:
+            from_jid = jid.JID(action_data["from_jid"])
+        except KeyError:
+            self.disp(_("Ignoring action without from_jid data"), error=True)
+            return
+
+        if not self.bare_jids or from_jid.bare in self.bare_jids:
+            host, port = "localhost", START_PORT
+            while True:
+                try:
+                    server = await asyncio.start_server(
+                        partial(handle_stream_in, host=self.host), host, port)
+                except socket.error as e:
+                    if e.errno == errno.EADDRINUSE:
+                        port += 1
+                    else:
+                        raise e
+                else:
+                    break
+            xmlui_data = {"answer": C.BOOL_TRUE, "port": str(port)}
+            await self.host.bridge.action_launch(
+                xmlui_id, data_format.serialise(xmlui_data), profile_key=profile
+            )
+            async with server:
+                await server.serve_forever()
+            self.host.quit_from_signal()
+
+    async def start(self):
+        self.bare_jids = [jid.JID(jid_).bare for jid_ in self.args.jids]
+        await self.start_answering()
+
+
+class Pipe(base.CommandBase):
+    subcommands = (PipeOut, PipeIn)
+
+    def __init__(self, host):
+        super(Pipe, self).__init__(
+            host, "pipe", use_profile=False, help=_("stream piping through XMPP")
+        )