From feeb18906f264bb5076b2e6da9c9578960fe9de0 Mon Sep 17 00:00:00 2001
From: vevv <68520787+vevv@users.noreply.github.com>
Date: Tue, 6 Sep 2022 16:01:16 +0200
Subject: [PATCH] Support for decrypting channel topics

---
 hexfish/plugin.py | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/hexfish/plugin.py b/hexfish/plugin.py
index 4ae2b27..cd56972 100644
--- a/hexfish/plugin.py
+++ b/hexfish/plugin.py
@@ -257,6 +257,8 @@ def __init__(self):
             xchat.hook_command('ME', self.on_send_me),
             xchat.hook_command('MSG', self.on_send_msg),
             xchat.hook_command('NOTICE', self.on_send_notice),
+            xchat.hook_server('332', self.on_recv_332, priority=xchat.PRI_HIGHEST),
+            xchat.hook_server('TOPIC', self.on_recv_topic, priority=xchat.PRI_HIGHEST),
             xchat.hook_server('notice', self.on_recv_notice, priority=xchat.PRI_HIGHEST),
             xchat.hook_print('Change Nick', self.on_change_nick),
             xchat.hook_unload(self.unload),
@@ -444,6 +446,50 @@ def on_recv_notice(self, word, word_eol, userdata):
             return xchat.EAT_XCHAT
         return xchat.EAT_NONE
 
+    # noinspection PyUnreachableCode
+    def on_recv_topic(self, word, word_eol, userdata):
+        server, cmd, nick = word[0], word[1], word[2]
+        key_nick = self.get_nick()
+        topic = word_eol[3][1:].strip()
+
+        key = None
+        try:
+            key = config['id_key', config['nick_id', key_nick]]
+        except Exception:
+            return xchat.EAT_NONE
+
+        if not key or not topic.startswith('+OK'):
+            return xchat.EAT_NONE
+
+        with suppress(ValueError, KeyError):
+            topic = self.decrypt(key_nick, topic)
+            xchat.command('RECV %s %s %s :%s' % (server, cmd, nick, topic))
+            return xchat.EAT_ALL
+
+        return xchat.EAT_NONE
+
+    # noinspection PyUnreachableCode
+    def on_recv_332(self, word, word_eol, userdata):
+        server, cmd, nick, channel, topic = word[0], word[1], word[2], word[3], word_eol[4]
+        topic = topic[1:]
+        key_nick = self.get_nick()
+
+        key = None
+        try:
+            key = config['id_key', config['nick_id', key_nick]]
+        except Exception:
+            return xchat.EAT_NONE
+
+        if not key or not topic.startswith('+OK'):
+            return xchat.EAT_NONE
+
+        with suppress(ValueError, KeyError):
+            topic = self.decrypt(key_nick, topic)
+            xchat.command('RECV %s %s %s %s :%s' % (server, cmd, nick, channel, topic))
+            return xchat.EAT_ALL
+
+        return xchat.EAT_NONE
+
     # noinspection PyUnreachableCode
     def on_send_message(self, word, word_eol, userdata):
         nick = self.get_nick()