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Add IsParting() flag to track PART commands waiting IRCd response.

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Fixes potential desync where ZNC marks channel as parted before server
confirms the PART, which could cause issues if the server never replies.

Add unittests and integration tests.
This commit is contained in:
RealKindOne
2026-07-21 03:24:38 -04:00
parent 3ceae3ad26
commit a0d58c8fed
6 changed files with 154 additions and 5 deletions
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test/integration/tests/core.cpp
+89 -2
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@@ -1318,7 +1318,7 @@ TEST_F(ZNCTest, JoinDetachedChannelMultiClient) {
// Commit ad7bd6d7eed84648638e1b6fd69546b9fe496576
// prevented rejoining when a client cycles a channel.
TEST_F(ZNCTest, ClientCycleChannels) {
TEST_F(ZNCTest, ClientCycleChannel) {
auto znc = Run();
auto ircd = ConnectIRCd();
auto client = LoginClient();
@@ -1333,11 +1333,98 @@ TEST_F(ZNCTest, ClientCycleChannels) {
client.ReadUntil("End of /NAMES");
// Clients have '/hop' or '/cycle' command that sends
// 'PART #channel' and 'JOIN #channel'. Verify ZNC rejoins..
// 'PART #channel' and 'JOIN #channel'. Verify ZNC rejoins.
client.Write(":nick PART #test");
// Verify PART is forwarded to server
QByteArray partMsg;
ircd.ReadUntilAndGet("PART", partMsg);
EXPECT_THAT(partMsg.toStdString(), HasSubstr("PART #test"));
ircd.Write(":nick PART #test");
client.ReadUntil(":nick PART #test");
client.Write(":nick JOIN #test");
ircd.ReadUntil("JOIN #test");
}
TEST_F(ZNCTest, PartWithError403) {
auto znc = Run();
auto ircd = ConnectIRCd();
auto client = LoginClient();
// Join a channel first
client.Write("JOIN #test");
client.Close();
ircd.Write(":server 001 nick :Hello");
ircd.ReadUntil("JOIN #test");
ircd.Write(":nick JOIN :#test");
ircd.Write(":server 353 nick #test :nick");
ircd.Write(":server 366 nick #test :End of /NAMES list");
// Reconnect client and send PART
client = LoginClient();
client.ReadUntil(":nick JOIN :#test");
client.Write("PART #test");
QByteArray partMsg;
ircd.ReadUntilAndGet("PART", partMsg);
EXPECT_THAT(partMsg.toStdString(), HasSubstr("PART #test"));
// Server returns 403 error (ERR_NOSUCHCHANNEL) instead of confirming
ircd.Write(":server 403 nick #test :No such channel");
// Verify client receives the status message about PART failure
client.ReadUntil("PART failed for channel #test");
// Verify channel still exists by trying to rejoin
client.Write("JOIN #test");
ircd.ReadUntil("JOIN #test");
ircd.Write(":nick JOIN :#test");
ircd.Write(":server 353 nick #test :nick");
ircd.Write(":server 366 nick #test :End of /NAMES list");
client.ReadUntil(":nick JOIN :#test");
}
TEST_F(ZNCTest, PartWithError442) {
auto znc = Run();
auto ircd = ConnectIRCd();
auto client = LoginClient();
// Join a channel first
client.Write("JOIN #test");
client.Close();
ircd.Write(":server 001 nick :Hello");
ircd.ReadUntil("JOIN #test");
ircd.Write(":nick JOIN :#test");
ircd.Write(":server 353 nick #test :nick");
ircd.Write(":server 366 nick #test :End of /NAMES list");
// Reconnect client and send PART
client = LoginClient();
client.ReadUntil(":nick JOIN :#test");
client.Write("PART #test :leaving");
QByteArray partMsg;
ircd.ReadUntilAndGet("PART", partMsg);
EXPECT_THAT(partMsg.toStdString(), HasSubstr("PART #test"));
// Server returns 442 error (ERR_NOTONCHANNEL) instead of confirming
ircd.Write(":server 442 nick #test :You're not on that channel");
// Verify client receives the status message about PART failure
client.ReadUntil("PART failed for channel #test");
// Verify channel still exists by trying to rejoin
client.Write("JOIN #test");
ircd.ReadUntil("JOIN #test");
ircd.Write(":nick JOIN :#test");
ircd.Write(":server 353 nick #test :nick");
ircd.Write(":server 366 nick #test :End of /NAMES list");
client.ReadUntil(":nick JOIN :#test");
}
} // namespace
} // namespace znc_inttest