system-config-printer-bug

import gi
gi.require_version('Secret', '1')
from gi.repository import Secret

params = {
    "user": Secret.SchemaAttributeType.STRING,
    "domain": Secret.SchemaAttributeType.STRING,
    "object": Secret.SchemaAttributeType.STRING,
    "protocol": Secret.SchemaAttributeType.STRING,
    "port": Secret.SchemaAttributeType.INTEGER,
    "server": Secret.SchemaAttributeType.STRING,
    "authtype": Secret.SchemaAttributeType.STRING,
    "uri": Secret.SchemaAttributeType.STRING,
}

NETWORK_PASSWORD = Secret.Schema.new("org.system.config.printer.store", Secret.SchemaFlags.NONE, params)

class ServiceGet:
    service = Secret.Service()
    def on_get_service(self, source, result, unused):
        service = Secret.Service.get_finish(result)
    def __init__(self):
        Secret.Service.get(0, None, self.on_get_service, None)
    def get_service(self):
        return ServiceGet.service

class ItemSearch:
    items = list()
    def on_search_item(self, source, result, unused):
        items = Secret.Service.search_finish(None, result)
    def __init__(self, service, attrs):
        Secret.Service.search(service, NETWORK_PASSWORD, attrs, Secret.SearchFlags.LOAD_SECRETS, None, self.on_search_item, None)
    def get_items(self):
        return ItemSearch.items

service_obj = ServiceGet()
service = service_obj.get_service()
attrs = dict({"uri" : "ipp://localhost/printers/Phaser-3250"})


# This next line errors out:
# GLib-GIO-CRITICAL **: 19:14:01.742: g_dbus_connection_call_internal: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
search_obj = ItemSearch(service, attrs)

items = search_obj.get_items()
print("Got items: %d" % len(items)) # Prints 0 items


# This, however, succeeds!!!
service = Secret.Service.get_sync(0, None)
items = Secret.Service.search_sync(service, NETWORK_PASSWORD, attrs, Secret.SearchFlags.LOAD_SECRETS, None)
password = items[0].get_secret().get()
print(password) # Prints out correct password