Files
chatmail-core/deltachat-rpc-client/tests/test_securejoin.py
link2xt a710c034e4 feat: do not show the address in invite QR code SVG
Addresses take space and sometimes
do not fit. We generally want
to deemphasize addresses in the UI,
especially randomized chatmail
addresses.
2024-07-22 22:39:48 +00:00

641 lines
24 KiB
Python

import logging
import pytest
from deltachat_rpc_client import Chat, EventType, SpecialContactId
def test_qr_setup_contact(acfactory, tmp_path) -> None:
alice, bob = acfactory.get_online_accounts(2)
qr_code = alice.get_qr_code()
bob.secure_join(qr_code)
alice.wait_for_securejoin_inviter_success()
# Test that Alice verified Bob's profile.
alice_contact_bob = alice.get_contact_by_addr(bob.get_config("addr"))
alice_contact_bob_snapshot = alice_contact_bob.get_snapshot()
assert alice_contact_bob_snapshot.is_verified
bob.wait_for_securejoin_joiner_success()
# Test that Bob verified Alice's profile.
bob_contact_alice = bob.get_contact_by_addr(alice.get_config("addr"))
bob_contact_alice_snapshot = bob_contact_alice.get_snapshot()
assert bob_contact_alice_snapshot.is_verified
# Test that if Bob changes the key, backwards verification is lost.
logging.info("Bob 2 is created")
bob2 = acfactory.new_configured_account()
bob2.export_self_keys(tmp_path)
logging.info("Bob imports a key")
bob.import_self_keys(tmp_path)
assert bob.get_config("key_id") == "2"
bob_contact_alice_snapshot = bob_contact_alice.get_snapshot()
assert not bob_contact_alice_snapshot.is_verified
def test_qr_setup_contact_svg(acfactory) -> None:
alice = acfactory.new_configured_account()
_, _, domain = alice.get_config("addr").rpartition("@")
_qr_code, svg = alice.get_qr_code_svg()
# Test that email address is in SVG
# when we have no display name.
# Check only the domain name, because
# long address may be split over multiple lines
# and not matched.
assert domain in svg
alice.set_config("displayname", "Alice")
# Test that display name is used
# in SVG and no address is visible.
_qr_code, svg = alice.get_qr_code_svg()
assert domain not in svg
assert "Alice" in svg
@pytest.mark.parametrize("protect", [True, False])
def test_qr_securejoin(acfactory, protect):
alice, bob = acfactory.get_online_accounts(2)
logging.info("Alice creates a verified group")
alice_chat = alice.create_group("Verified group", protect=protect)
assert alice_chat.get_basic_snapshot().is_protected == protect
logging.info("Bob joins verified group")
qr_code = alice_chat.get_qr_code()
bob.secure_join(qr_code)
# Check that at least some of the handshake messages are deleted.
for ac in [alice, bob]:
while True:
event = ac.wait_for_event()
if event["kind"] == "ImapMessageDeleted":
break
alice.wait_for_securejoin_inviter_success()
# Test that Alice verified Bob's profile.
alice_contact_bob = alice.get_contact_by_addr(bob.get_config("addr"))
alice_contact_bob_snapshot = alice_contact_bob.get_snapshot()
assert alice_contact_bob_snapshot.is_verified
bob.wait_for_securejoin_joiner_success()
snapshot = bob.get_message_by_id(bob.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Member Me ({}) added by {}.".format(bob.get_config("addr"), alice.get_config("addr"))
assert snapshot.chat.get_basic_snapshot().is_protected == protect
# Test that Bob verified Alice's profile.
bob_contact_alice = bob.get_contact_by_addr(alice.get_config("addr"))
bob_contact_alice_snapshot = bob_contact_alice.get_snapshot()
assert bob_contact_alice_snapshot.is_verified
def test_qr_securejoin_contact_request(acfactory) -> None:
"""Alice invites Bob to a group when Bob's chat with Alice is in a contact request mode."""
alice, bob = acfactory.get_online_accounts(2)
bob_addr = bob.get_config("addr")
alice_contact_bob = alice.create_contact(bob_addr, "Bob")
alice_chat_bob = alice_contact_bob.create_chat()
alice_chat_bob.send_text("Hello!")
snapshot = bob.get_message_by_id(bob.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Hello!"
bob_chat_alice = snapshot.chat
assert bob_chat_alice.get_basic_snapshot().is_contact_request
alice_chat = alice.create_group("Verified group", protect=True)
logging.info("Bob joins verified group")
qr_code = alice_chat.get_qr_code()
bob.secure_join(qr_code)
while True:
event = bob.wait_for_event()
if event["kind"] == "SecurejoinJoinerProgress" and event["progress"] == 1000:
break
# Chat stays being a contact request.
assert bob_chat_alice.get_basic_snapshot().is_contact_request
def test_qr_readreceipt(acfactory) -> None:
alice, bob, charlie = acfactory.get_online_accounts(3)
logging.info("Bob and Charlie setup contact with Alice")
qr_code = alice.get_qr_code()
bob.secure_join(qr_code)
charlie.secure_join(qr_code)
for joiner in [bob, charlie]:
joiner.wait_for_securejoin_joiner_success()
logging.info("Alice creates a verified group")
group = alice.create_group("Group", protect=True)
bob_addr = bob.get_config("addr")
charlie_addr = charlie.get_config("addr")
alice_contact_bob = alice.create_contact(bob_addr, "Bob")
alice_contact_charlie = alice.create_contact(charlie_addr, "Charlie")
group.add_contact(alice_contact_bob)
group.add_contact(alice_contact_charlie)
# Promote a group.
group.send_message(text="Hello")
logging.info("Bob and Charlie receive a group")
bob_msg_id = bob.wait_for_incoming_msg_event().msg_id
bob_message = bob.get_message_by_id(bob_msg_id)
bob_snapshot = bob_message.get_snapshot()
assert bob_snapshot.text == "Hello"
# Charlie receives the same "Hello" message as Bob.
charlie.wait_for_incoming_msg_event()
logging.info("Bob sends a message to the group")
bob_out_message = bob_snapshot.chat.send_message(text="Hi from Bob!")
charlie_msg_id = charlie.wait_for_incoming_msg_event().msg_id
charlie_message = charlie.get_message_by_id(charlie_msg_id)
charlie_snapshot = charlie_message.get_snapshot()
assert charlie_snapshot.text == "Hi from Bob!"
bob_contact_charlie = bob.create_contact(charlie_addr, "Charlie")
assert not bob.get_chat_by_contact(bob_contact_charlie)
logging.info("Charlie reads Bob's message")
charlie_message.mark_seen()
while True:
event = bob.wait_for_event()
if event["kind"] == "MsgRead" and event["msg_id"] == bob_out_message.id:
break
# Receiving a read receipt from Charlie
# should not unblock hidden chat with Charlie for Bob.
assert not bob.get_chat_by_contact(bob_contact_charlie)
def test_setup_contact_resetup(acfactory) -> None:
"""Tests that setup contact works after Alice resets the device and changes the key."""
alice, bob = acfactory.get_online_accounts(2)
qr_code = alice.get_qr_code()
bob.secure_join(qr_code)
bob.wait_for_securejoin_joiner_success()
alice = acfactory.resetup_account(alice)
qr_code = alice.get_qr_code()
bob.secure_join(qr_code)
bob.wait_for_securejoin_joiner_success()
def test_verified_group_recovery(acfactory) -> None:
"""Tests verified group recovery by reverifying a member and sending a message in a group."""
ac1, ac2, ac3 = acfactory.get_online_accounts(3)
logging.info("ac1 creates verified group")
chat = ac1.create_group("Verified group", protect=True)
assert chat.get_basic_snapshot().is_protected
logging.info("ac2 joins verified group")
qr_code = chat.get_qr_code()
ac2.secure_join(qr_code)
ac2.wait_for_securejoin_joiner_success()
# ac1 has ac2 directly verified.
ac1_contact_ac2 = ac1.get_contact_by_addr(ac2.get_config("addr"))
assert ac1_contact_ac2.get_snapshot().verifier_id == SpecialContactId.SELF
logging.info("ac3 joins verified group")
ac3_chat = ac3.secure_join(qr_code)
ac3.wait_for_securejoin_joiner_success()
ac3.wait_for_incoming_msg_event() # Member added
logging.info("ac2 logs in on a new device")
ac2 = acfactory.resetup_account(ac2)
logging.info("ac2 reverifies with ac3")
qr_code = ac3.get_qr_code()
ac2.secure_join(qr_code)
ac2.wait_for_securejoin_joiner_success()
logging.info("ac3 sends a message to the group")
assert len(ac3_chat.get_contacts()) == 3
ac3_chat.send_text("Hi!")
snapshot = ac1.get_message_by_id(ac1.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Hi!"
msg_id = ac2.wait_for_incoming_msg_event().msg_id
message = ac2.get_message_by_id(msg_id)
snapshot = message.get_snapshot()
assert snapshot.text == "Hi!"
# ac1 contact is verified for ac2 because ac3 gossiped ac1 key in the "Hi!" message.
ac1_contact = ac2.get_contact_by_addr(ac1.get_config("addr"))
assert ac1_contact.get_snapshot().is_verified
# ac2 can write messages to the group.
snapshot.chat.send_text("Works again!")
snapshot = ac3.get_message_by_id(ac3.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Works again!"
snapshot = ac1.get_message_by_id(ac1.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Works again!"
ac1_chat_messages = snapshot.chat.get_messages()
ac2_addr = ac2.get_config("addr")
assert ac1_chat_messages[-2].get_snapshot().text == f"Changed setup for {ac2_addr}"
# ac2 is now verified by ac3 for ac1
ac1_contact_ac3 = ac1.get_contact_by_addr(ac3.get_config("addr"))
assert ac1_contact_ac2.get_snapshot().verifier_id == ac1_contact_ac3.id
def test_verified_group_member_added_recovery(acfactory) -> None:
"""Tests verified group recovery by reverifiying than removing and adding a member back."""
ac1, ac2, ac3 = acfactory.get_online_accounts(3)
logging.info("ac1 creates verified group")
chat = ac1.create_group("Verified group", protect=True)
assert chat.get_basic_snapshot().is_protected
logging.info("ac2 joins verified group")
qr_code = chat.get_qr_code()
ac2.secure_join(qr_code)
ac2.wait_for_securejoin_joiner_success()
# ac1 has ac2 directly verified.
ac1_contact_ac2 = ac1.get_contact_by_addr(ac2.get_config("addr"))
assert ac1_contact_ac2.get_snapshot().verifier_id == SpecialContactId.SELF
logging.info("ac3 joins verified group")
ac3_chat = ac3.secure_join(qr_code)
ac3.wait_for_securejoin_joiner_success()
ac3.wait_for_incoming_msg_event() # Member added
logging.info("ac2 logs in on a new device")
ac2 = acfactory.resetup_account(ac2)
logging.info("ac2 reverifies with ac3")
qr_code = ac3.get_qr_code()
ac2.secure_join(qr_code)
ac2.wait_for_securejoin_joiner_success()
logging.info("ac3 sends a message to the group")
assert len(ac3_chat.get_contacts()) == 3
ac3_chat.send_text("Hi!")
msg_id = ac2.wait_for_incoming_msg_event().msg_id
message = ac2.get_message_by_id(msg_id)
snapshot = message.get_snapshot()
logging.info("Received message %s", snapshot.text)
assert snapshot.text == "Hi!"
ac1.wait_for_incoming_msg_event() # Hi!
ac3_contact_ac2 = ac3.get_contact_by_addr(ac2.get_config("addr"))
ac3_chat.remove_contact(ac3_contact_ac2)
ac3_chat.add_contact(ac3_contact_ac2)
msg_id = ac2.wait_for_incoming_msg_event().msg_id
message = ac2.get_message_by_id(msg_id)
snapshot = message.get_snapshot()
assert "removed" in snapshot.text
snapshot = ac1.get_message_by_id(ac1.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert "removed" in snapshot.text
event = ac2.wait_for_incoming_msg_event()
msg_id = event.msg_id
chat_id = event.chat_id
message = ac2.get_message_by_id(msg_id)
snapshot = message.get_snapshot()
logging.info("ac2 got event message: %s", snapshot.text)
assert "added" in snapshot.text
snapshot = ac1.get_message_by_id(ac1.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert "added" in snapshot.text
chat = Chat(ac2, chat_id)
chat.send_text("Works again!")
msg_id = ac3.wait_for_incoming_msg_event().msg_id
message = ac3.get_message_by_id(msg_id)
snapshot = message.get_snapshot()
assert snapshot.text == "Works again!"
snapshot = ac1.get_message_by_id(ac1.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Works again!"
ac1_contact_ac2 = ac1.get_contact_by_addr(ac2.get_config("addr"))
ac1_contact_ac2_snapshot = ac1_contact_ac2.get_snapshot()
assert ac1_contact_ac2_snapshot.is_verified
assert ac1_contact_ac2_snapshot.verifier_id == ac1.get_contact_by_addr(ac3.get_config("addr")).id
# ac2 is now verified by ac3 for ac1
ac1_contact_ac3 = ac1.get_contact_by_addr(ac3.get_config("addr"))
assert ac1_contact_ac2.get_snapshot().verifier_id == ac1_contact_ac3.id
def test_qr_join_chat_with_pending_bobstate_issue4894(acfactory):
"""Regression test for
issue <https://github.com/deltachat/deltachat-core-rust/issues/4894>.
"""
ac1, ac2, ac3, ac4 = acfactory.get_online_accounts(4)
logging.info("ac3: verify with ac2")
qr_code = ac2.get_qr_code()
ac3.secure_join(qr_code)
ac2.wait_for_securejoin_inviter_success()
# in order for ac2 to have pending bobstate with a verified group
# we first create a fully joined verified group, and then start
# joining a second time but interrupt it, to create pending bob state
logging.info("ac1: create verified group that ac2 fully joins")
ch1 = ac1.create_group("Group", protect=True)
qr_code = ch1.get_qr_code()
ac2.secure_join(qr_code)
ac1.wait_for_securejoin_inviter_success()
# ensure ac1 can write and ac2 receives messages in verified chat
ch1.send_text("ac1 says hello")
while 1:
snapshot = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id).get_snapshot()
if snapshot.text == "ac1 says hello":
assert snapshot.chat.get_basic_snapshot().is_protected
break
logging.info("ac1: let ac2 join again but shutoff ac1 in the middle of securejoin")
qr_code = ch1.get_qr_code()
ac2.secure_join(qr_code)
ac1.remove()
logging.info("ac2 now has pending bobstate but ac1 is shutoff")
# we meanwhile expect ac3/ac2 verification started in the beginning to have completed
assert ac3.get_contact_by_addr(ac2.get_config("addr")).get_snapshot().is_verified
assert ac2.get_contact_by_addr(ac3.get_config("addr")).get_snapshot().is_verified
logging.info("ac3: create a verified group VG with ac2")
vg = ac3.create_group("ac3-created", protect=True)
vg.add_contact(ac3.get_contact_by_addr(ac2.get_config("addr")))
# ensure ac2 receives message in VG
vg.send_text("hello")
while 1:
msg = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id).get_snapshot()
if msg.text == "hello":
assert msg.chat.get_basic_snapshot().is_protected
break
logging.info("ac3: create a join-code for group VG and let ac4 join, check that ac2 got it")
qr_code = vg.get_qr_code()
ac4.secure_join(qr_code)
ac3.wait_for_securejoin_inviter_success()
while 1:
ev = ac2.wait_for_event()
if "added by unrelated SecureJoin" in str(ev):
return
def test_qr_new_group_unblocked(acfactory):
"""Regression test for a bug introduced in core v1.113.0.
ac2 scans a verified group QR code created by ac1.
This results in creation of a blocked 1:1 chat with ac1 on ac2,
but ac1 contact is not blocked on ac2.
Then ac1 creates a group, adds ac2 there and promotes it by sending a message.
ac2 should receive a message and create a contact request for the group.
Due to a bug previously ac2 created a blocked group.
"""
ac1, ac2 = acfactory.get_online_accounts(2)
ac1_chat = ac1.create_group("Group for joining", protect=True)
qr_code = ac1_chat.get_qr_code()
ac2.secure_join(qr_code)
ac1.wait_for_securejoin_inviter_success()
ac1_new_chat = ac1.create_group("Another group")
ac1_new_chat.add_contact(ac1.get_contact_by_addr(ac2.get_config("addr")))
# Receive "Member added" message.
ac2.wait_for_incoming_msg_event()
ac1_new_chat.send_text("Hello!")
ac2_msg = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert ac2_msg.text == "Hello!"
assert ac2_msg.chat.get_basic_snapshot().is_contact_request
def test_aeap_flow_verified(acfactory):
"""Test that a new address is added to a contact when it changes its address."""
ac1, ac2, ac1new = acfactory.get_online_accounts(3)
logging.info("ac1: create verified-group QR, ac2 scans and joins")
chat = ac1.create_group("hello", protect=True)
assert chat.get_basic_snapshot().is_protected
qr_code = chat.get_qr_code()
logging.info("ac2: start QR-code based join-group protocol")
ac2.secure_join(qr_code)
ac1.wait_for_securejoin_inviter_success()
logging.info("sending first message")
msg_out = chat.send_text("old address").get_snapshot()
logging.info("receiving first message")
ac2.wait_for_incoming_msg_event() # member added message
msg_in_1 = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert msg_in_1.text == msg_out.text
logging.info("changing email account")
ac1.set_config("addr", ac1new.get_config("addr"))
ac1.set_config("mail_pw", ac1new.get_config("mail_pw"))
ac1.stop_io()
ac1.configure()
ac1.start_io()
logging.info("sending second message")
msg_out = chat.send_text("changed address").get_snapshot()
logging.info("receiving second message")
msg_in_2 = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id)
msg_in_2_snapshot = msg_in_2.get_snapshot()
assert msg_in_2_snapshot.text == msg_out.text
assert msg_in_2_snapshot.chat.id == msg_in_1.chat.id
assert msg_in_2.get_sender_contact().get_snapshot().address == ac1new.get_config("addr")
assert len(msg_in_2_snapshot.chat.get_contacts()) == 2
assert ac1new.get_config("addr") in [
contact.get_snapshot().address for contact in msg_in_2_snapshot.chat.get_contacts()
]
def test_gossip_verification(acfactory) -> None:
alice, bob, carol = acfactory.get_online_accounts(3)
# Bob verifies Alice.
qr_code = alice.get_qr_code()
bob.secure_join(qr_code)
bob.wait_for_securejoin_joiner_success()
# Bob verifies Carol.
qr_code = carol.get_qr_code()
bob.secure_join(qr_code)
bob.wait_for_securejoin_joiner_success()
bob_contact_alice = bob.create_contact(alice.get_config("addr"), "Alice")
bob_contact_carol = bob.create_contact(carol.get_config("addr"), "Carol")
carol_contact_alice = carol.create_contact(alice.get_config("addr"), "Alice")
logging.info("Bob creates an Autocrypt group")
bob_group_chat = bob.create_group("Autocrypt Group")
assert not bob_group_chat.get_basic_snapshot().is_protected
bob_group_chat.add_contact(bob_contact_alice)
bob_group_chat.add_contact(bob_contact_carol)
bob_group_chat.send_message(text="Hello Autocrypt group")
snapshot = carol.get_message_by_id(carol.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Hello Autocrypt group"
assert snapshot.show_padlock
# Autocrypt group does not propagate verification.
carol_contact_alice_snapshot = carol_contact_alice.get_snapshot()
assert not carol_contact_alice_snapshot.is_verified
logging.info("Bob creates a Securejoin group")
bob_group_chat = bob.create_group("Securejoin Group", protect=True)
assert bob_group_chat.get_basic_snapshot().is_protected
bob_group_chat.add_contact(bob_contact_alice)
bob_group_chat.add_contact(bob_contact_carol)
bob_group_chat.send_message(text="Hello Securejoin group")
snapshot = carol.get_message_by_id(carol.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Hello Securejoin group"
assert snapshot.show_padlock
# Securejoin propagates verification.
carol_contact_alice_snapshot = carol_contact_alice.get_snapshot()
assert carol_contact_alice_snapshot.is_verified
def test_securejoin_after_contact_resetup(acfactory) -> None:
"""
Regression test for a bug that prevented joining verified group with a QR code
if the group is already created and contains
a contact with inconsistent (Autocrypt and verified keys exist but don't match) key state.
"""
ac1, ac2, ac3 = acfactory.get_online_accounts(3)
# ac3 creates protected group with ac1.
ac3_chat = ac3.create_group("Verified group", protect=True)
# ac1 joins ac3 group.
ac3_qr_code = ac3_chat.get_qr_code()
ac1.secure_join(ac3_qr_code)
ac1.wait_for_securejoin_joiner_success()
# ac1 waits for member added message and creates a QR code.
snapshot = ac1.get_message_by_id(ac1.wait_for_incoming_msg_event().msg_id).get_snapshot()
ac1_qr_code = snapshot.chat.get_qr_code()
# ac2 verifies ac1
qr_code = ac1.get_qr_code()
ac2.secure_join(qr_code)
ac2.wait_for_securejoin_joiner_success()
# ac1 is verified for ac2.
ac2_contact_ac1 = ac2.create_contact(ac1.get_config("addr"), "")
assert ac2_contact_ac1.get_snapshot().is_verified
# ac1 resetups the account.
ac1 = acfactory.resetup_account(ac1)
# ac1 sends a message to ac2.
ac1_contact_ac2 = ac1.create_contact(ac2.get_config("addr"), "")
ac1_chat_ac2 = ac1_contact_ac2.create_chat()
ac1_chat_ac2.send_text("Hello!")
# ac2 receives a message.
snapshot = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Hello!"
# ac1 is no longer verified for ac2 as new Autocrypt key is not the same as old verified key.
assert not ac2_contact_ac1.get_snapshot().is_verified
# ac1 goes offline.
ac1.remove()
# Scanning a QR code results in creating an unprotected group with an inviter.
# In this case inviter is ac1 which has an inconsistent key state.
# Normally inviter becomes verified as a result of Securejoin protocol
# and then the group chat becomes verified when "Member added" is received,
# but in this case ac1 is offline and this Securejoin process will never finish.
logging.info("ac2 scans ac1 QR code, this is not expected to finish")
ac2.secure_join(ac1_qr_code)
logging.info("ac2 scans ac3 QR code")
ac2.secure_join(ac3_qr_code)
logging.info("ac2 waits for joiner success")
ac2.wait_for_securejoin_joiner_success()
# Wait for member added.
logging.info("ac2 waits for member added message")
snapshot = ac2.get_message_by_id(ac2.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.is_info
ac2_chat = snapshot.chat
assert ac2_chat.get_basic_snapshot().is_protected
assert len(ac2_chat.get_contacts()) == 3
# ac1 is still "not verified" for ac2 due to inconsistent state.
assert not ac2_contact_ac1.get_snapshot().is_verified
def test_withdraw_securejoin_qr(acfactory):
alice, bob = acfactory.get_online_accounts(2)
logging.info("Alice creates a verified group")
alice_chat = alice.create_group("Verified group", protect=True)
assert alice_chat.get_basic_snapshot().is_protected
logging.info("Bob joins verified group")
qr_code = alice_chat.get_qr_code()
bob_chat = bob.secure_join(qr_code)
bob.wait_for_securejoin_joiner_success()
snapshot = bob.get_message_by_id(bob.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Member Me ({}) added by {}.".format(bob.get_config("addr"), alice.get_config("addr"))
assert snapshot.chat.get_basic_snapshot().is_protected
bob_chat.leave()
snapshot = alice.get_message_by_id(alice.wait_for_incoming_msg_event().msg_id).get_snapshot()
assert snapshot.text == "Group left by {}.".format(bob.get_config("addr"))
logging.info("Alice withdraws QR code.")
qr = alice.check_qr(qr_code)
assert qr["kind"] == "withdrawVerifyGroup"
alice.set_config_from_qr(qr_code)
logging.info("Bob scans withdrawn QR code.")
bob_chat = bob.secure_join(qr_code)
logging.info("Bob scanned withdrawn QR code")
while True:
event = alice.wait_for_event()
if event.kind == EventType.MSGS_CHANGED and event.chat_id != 0:
break
snapshot = alice.get_message_by_id(event.msg_id).get_snapshot()
assert snapshot.text == "Cannot establish guaranteed end-to-end encryption with {}".format(bob.get_config("addr"))