From 7ac369cbe46739beac37d97642b65b98c46ffc4d Mon Sep 17 00:00:00 2001
From: Luke Bratch <luke@bratch.co.uk>
Date: Sun, 31 Mar 2024 22:17:16 +0100
Subject: Handle server KICK commands.

---
 message.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'message.c')

diff --git a/message.c b/message.c
index f9e65a2..9d85f63 100644
--- a/message.c
+++ b/message.c
@@ -247,6 +247,7 @@ int processservermessage(SSL *server_ssl, char *str, struct client *clients, int
       }
 
       // Remove the PARTing nick from our local channel struct
+      // TODO - don't bother with this if we did removechannel() above?
       if (!removenickfromchannel(tokens[0], tokens[2], channels, ircdstate->maxchannelcount)) {
         debugprint(DEBUG_CRIT, "Failed to remove nick from channel struct.\n");
       }
@@ -268,6 +269,43 @@ int processservermessage(SSL *server_ssl, char *str, struct client *clients, int
       return 1;
     }
 
+    // Server KICK received?  Remove from our local channel list if it's us.
+    if (strncmp(tokens[1], "KICK", strlen(tokens[1])) == 0 && counter >= 3) {
+      debugprint(DEBUG_FULL, "Server KICK found and it is: %s with length %zd!  Next token is '%s'.  Removing from local channel list if it's us.\n", tokens[0], strlen(tokens[0]), tokens[2]);
+
+      // If the user being KICKed is us, then we must have left a channel, so remove it from our local channel array.
+      // (If it's not us, then it's another user being KICKed from a channel, so just pass straight through to letting all our clients know.)
+      if ((strlen(tokens[3]) == strlen(ircdstate->ircnick)) && (strncmp(tokens[3], ircdstate->ircnick, strlen(tokens[3])) == 0)) {
+        debugprint(DEBUG_FULL, "Server KICK: nick is ours ('%s' vs '%s').\n", tokens[3], ircdstate->ircnick);
+        removechannel(channels, ircdstate->maxchannelcount, tokens[2]);
+      } else {
+        debugprint(DEBUG_FULL, "Server KICK: nick is NOT ours ('%s' vs '%s').\n", tokens[3], ircdstate->ircnick);
+      }
+
+      // Remove the KICKed nick from our local channel struct
+      // TODO - removenickfromchannel() first argument expects ":nick!user@host" but we're passing "nick" here
+      // TODO - don't bother with this if we did removechannel() above?
+      if (!removenickfromchannel(tokens[3], tokens[2], channels, ircdstate->maxchannelcount)) {
+        debugprint(DEBUG_CRIT, "Server KICK: Failed to remove nick from channel struct.\n");
+      }
+
+      // And then send to all clients
+      sendtoallclients(clients, str, sourcefd, settings);
+
+      // TODO - Consider whether replay for KICK needs to be special (like TOPIC/JOIN/PART/NICK/QUIT in sanitisereplay())
+      // Write to replay log if replay logging enabled
+      if (settings->replaylogging) {
+        writereplayline(str, settings->basedir);
+      }
+
+      // Write to normal log if logging enabled
+      if (settings->logging) {
+        logline(str, ircdstate, settings->basedir, LOG_KICK);
+      }
+
+      return 1;
+    }
+
     // Server QUIT received?  Tell all clients and also remove the user from our local channels struct.
     if (strncmp(tokens[1], "QUIT", strlen(tokens[1])) == 0) {
       debugprint(DEBUG_FULL, "Server QUIT found and it is: %s with length %zd!  Next token is '%s'.\n", tokens[0], strlen(tokens[0]), tokens[2]);
-- 
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