From c705ba5a89cd7b5c19677f4950c9784828ffc5c6 Mon Sep 17 00:00:00 2001
From: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Date: Thu, 8 Mar 2007 10:42:05 +0000
Subject: [PATCH] Previous attempt at cleaning up the prefix matcher were too
 restrictive, try using a different approach

---
 lib/rbot/irc.rb     | 20 ++++++++++++++------
 lib/rbot/rfc2812.rb |  4 ++--
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/lib/rbot/irc.rb b/lib/rbot/irc.rb
index a07c8b23..c2c1e82f 100644
--- a/lib/rbot/irc.rb
+++ b/lib/rbot/irc.rb
@@ -554,12 +554,18 @@ class Regexp
     # User-matching Regexp
     GEN_USER_ID = /(#{GEN_NICK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/
 
-    # For Netmask, we want to allow wildcards * and ? in the nick
-    # (they are already allowed in the user and host part
-    GEN_NICK_MASK = /(?:#{NICK_FIRST}|[?*])?(?:#{NICK_ANY}|[?*])+/
+    # Things such has the BIP proxy send invalid nicks in a complete netmask,
+    # so we want to match this, rather: this matches either a compliant nick
+    # or a a string with a very generic nick, a very generic hostname after an
+    # @ sign, and an optional user after a !
+    BANG_AT = /#{GEN_NICK}|\S+?(?:!\S+?)?@\S+?/
 
-    # Netmask-matching Regexp
-    GEN_MASK = /(#{GEN_NICK_MASK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/
+    # # For Netmask, we want to allow wildcards * and ? in the nick
+    # # (they are already allowed in the user and host part
+    # GEN_NICK_MASK = /(?:#{NICK_FIRST}|[?*])?(?:#{NICK_ANY}|[?*])+/
+
+    # # Netmask-matching Regexp
+    # GEN_MASK = /(#{GEN_NICK_MASK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/
 
   end
 
@@ -608,7 +614,9 @@ module Irc
       # Now we can see if the given string _str_ is an actual Netmask
       if str.respond_to?(:to_str)
         case str.to_str
-        when /^(?:#{Regexp::Irc::GEN_MASK})?$/
+          # We match a pretty generic string, to work around non-compliant
+          # servers
+        when /^(?:(\S+?)(?:(?:!(\S+?))?@(\S+))?)?$/
           # We do assignment using our internal methods
           self.nick = $1
           self.user = $2
diff --git a/lib/rbot/rfc2812.rb b/lib/rbot/rfc2812.rb
index 1ab981f8..482cefe7 100644
--- a/lib/rbot/rfc2812.rb
+++ b/lib/rbot/rfc2812.rb
@@ -902,12 +902,12 @@ module Irc
         # This is not always true, though, since some servers do not send a
         # full hostmask for user messages.
         #
-        if prefix =~ /^#{Regexp::Irc::GEN_USER_ID}$/
+        if prefix =~ /^#{Regexp::Irc::BANG_AT}$/
           data[:source] = @server.user(prefix)
         else
           if @server.hostname
             if @server.hostname != prefix
-              # TODO do we want to be able to differentiated messages that are passed on to us from /other/ servers?
+              # TODO do we want to be able to differentiate messages that are passed on to us from /other/ servers?
               debug "Origin #{prefix} for message\n\t#{serverstring.inspect}\nis neither a user hostmask nor the server hostname\nI'll pretend that it's from the server anyway"
               data[:source] = @server
             else
-- 
2.39.2