Mercurial > libervia-backend
annotate libervia/cli/xml_tools.py @ 4306:94e0968987cd
plugin XEP-0033: code modernisation, improve delivery, data validation:
- Code has been rewritten using Pydantic models and `async` coroutines for data validation
and cleaner element parsing/generation.
- Delivery has been completely rewritten. It now works even if server doesn't support
multicast, and send to local multicast service first. Delivering to local multicast
service first is due to bad support of XEP-0033 in server (notably Prosody which has an
incomplete implementation), and the current impossibility to detect if a sub-domain
service handles fully multicast or only for local domains. This is a workaround to have
a good balance between backward compatilibity and use of bandwith, and to make it work
with the incoming email gateway implementation (the gateway will only deliver to
entities of its own domain).
- disco feature checking now uses `async` corountines. `host` implementation still use
Deferred return values for compatibility with legacy code.
rel 450
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Thu, 26 Sep 2024 16:12:01 +0200 |
| parents | 0d7bb4df2343 |
| children |
| rev | line source |
|---|---|
| 3137 | 1 #!/usr/bin/env python3 |
| 2 | |
| 2777 | 3 |
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4 # Libervia CLI |
| 3479 | 5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
| 2777 | 6 |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
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20 from libervia.backend.core.i18n import _ |
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21 from libervia.cli.constants import Const as C |
| 2777 | 22 |
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23 |
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24 def etree_parse(cmd, raw_xml, reraise=False): |
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25 """import lxml and parse raw XML |
| 2777 | 26 |
| 27 @param cmd(CommandBase): current command instance | |
| 28 @param raw_xml(file, str): an XML bytestring, string or file-like object | |
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29 @param reraise(bool): if True, re raise exception on parse error instead of doing a |
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30 parser.error (which terminate the execution) |
| 2777 | 31 @return (tuple(etree.Element, module): parsed element, etree module |
| 32 """ | |
| 33 try: | |
| 34 from lxml import etree | |
| 35 except ImportError: | |
| 36 cmd.disp( | |
| 3028 | 37 'lxml module must be installed, please install it with "pip install lxml"', |
| 2777 | 38 error=True, |
| 39 ) | |
| 40 cmd.host.quit(C.EXIT_ERROR) | |
| 41 try: | |
| 3028 | 42 if isinstance(raw_xml, str): |
| 2777 | 43 parser = etree.XMLParser(remove_blank_text=True) |
| 44 element = etree.fromstring(raw_xml, parser) | |
| 45 else: | |
| 46 element = etree.parse(raw_xml).getroot() | |
| 47 except Exception as e: | |
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48 if reraise: |
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49 raise e |
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50 cmd.parser.error(_("Can't parse the payload XML in input: {msg}").format(msg=e)) |
| 2777 | 51 return element, etree |
| 52 | |
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53 |
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54 def get_payload(cmd, element): |
| 2777 | 55 """Retrieve payload element and exit with and error if not found |
| 56 | |
| 57 @param element(etree.Element): root element | |
| 58 @return element(etree.Element): payload element | |
| 59 """ | |
| 60 if element.tag in ("item", "{http://jabber.org/protocol/pubsub}item"): | |
| 61 if len(element) > 1: | |
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62 cmd.disp( |
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63 _("<item> can only have one child element (the payload)"), error=True |
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64 ) |
| 2777 | 65 cmd.host.quit(C.EXIT_DATA_ERROR) |
| 66 element = element[0] | |
| 67 return element |