Files
shopdb-flask/plugins/tools/plugin.py

84 lines
3.0 KiB
Python

"""Tech Tools plugin.
A section for small technician utilities. MOST tools here run entirely in the
browser - no API, no tables, no state - which is deliberate: these are the
things someone reaches for at a bench with no network guarantee, and an
air-gapped site gets them for free.
SECURE SEND IS THE EXCEPTION, and it is why this plugin now has a blueprint, a
table and a migration chain where it once had none. A link that expires and dies
on first read cannot be browser-only: something has to hold the ciphertext until
it is claimed, and forget it afterwards. The secret itself is still encrypted in
the browser - the key travels in the URL fragment and never reaches this server -
so what is stored is ciphertext nobody on this side can read.
The plugin also exists so the section can carry a nav entry and be included in or
left out of a per-site build (ADR-013).
"""
import logging
from typing import List, Optional, Type
from flask import Blueprint, Flask
from shopdb.plugins.base import BasePlugin, PluginMeta
from .models import SecureSecret
from .api import tools_bp
logger = logging.getLogger(__name__)
class ToolsPlugin(BasePlugin):
"""Registers the Tech Tools section and the one tool that needs a server."""
@property
def meta(self) -> PluginMeta:
return PluginMeta(
name='tools',
version='1.0.0',
description=('Tech Tools: technician utilities, mostly browser-side '
'(barcode/QR labels) plus secure send for handing '
'somebody a credential by one-view link'),
author='ShopDB Team',
dependencies=[],
core_version='>=0.16.0,<1.0.0',
api_prefix='/api/tools',
)
def get_blueprint(self) -> Optional[Blueprint]:
# Secure send only. Every other tool is still browser-side.
return tools_bp
def get_models(self) -> List[Type]:
return [SecureSecret]
def get_permissions(self) -> List:
"""One permission, on CREATING a secret only.
There is deliberately no read permission: the recipient usually has no
account here, and the unguessable token is what authorises the read.
Gating that side would make the tool useless for the case it exists for -
handing somebody a credential while you are on a call with them.
No delete permission either. A secret is spent by being read or by
expiring, and both remove the row; a hand-delete route would only add a
way to destroy the record of a secret that had not been read yet.
"""
return [
('tools.secrets', 'Create secure send links', 'tools'),
]
def get_navigation_items(self) -> List[dict]:
return [
{
'name': 'Tech Tools',
'icon': 'wrench',
'route': '/tools',
'position': 47,
},
]
def on_install(self, app: Flask) -> None:
logger.info('Tools plugin installed')