From f8ca9e22cc2c82d800c13e9a856bee01d777b9bb Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Fri, 4 Aug 2006 19:32:11 +0000
Subject: Fix global session checks

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@4715 e03df62e-2008-0410-955e-edbf42e46eb7
---
 include/users.h |  6 +++++-
 src/users.cpp   | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/include/users.h b/include/users.h
index 743ea6c8a..0b9599548 100644
--- a/include/users.h
+++ b/include/users.h
@@ -282,10 +282,14 @@ class userrec : public connection
 	 */
 	int GetProtocolFamily();
 
-	/** Get IP string from sockaddr
+	/** Get IP string from sockaddr, using static internal buffer
 	 */
 	const char* GetIPString();
 
+	/** Get IP string from sockaddr, using caller-specified buffer
+	 */
+	const char* GetIPString(char* buf);
+
 	/* Write error string
 	 */
 	std::string WriteError;
diff --git a/src/users.cpp b/src/users.cpp
index 3a7eca81f..7ed5e2fd6 100644
--- a/src/users.cpp
+++ b/src/users.cpp
@@ -917,13 +917,15 @@ void AddClient(int socket, int port, bool iscached, insp_inaddr ip)
 
 long FindMatchingGlobal(userrec* user)
 {
+	char u1[1024];
+	char u2[1024];
 	long x = 0;
 	for (user_hash::const_iterator a = clientlist.begin(); a != clientlist.end(); a++)
 	{
 		/* We have to match ip's as strings - we don't know what protocol
 		 * a remote user may be using
 		 */
-		if (!strcasecmp(a->second->GetIPString(), user->GetIPString()))
+		if (!strcasecmp(a->second->GetIPString(u1), user->GetIPString(u2)))
 				x++;
 	}
 	return x;
@@ -1232,3 +1234,46 @@ const char* userrec::GetIPString()
 	return "";
 }
 
+const char* userrec::GetIPString(char* buf)
+{
+	static char temp[1024];
+
+	if (this->ip == NULL)
+	{
+		*buf = 0;
+		return buf;
+	}
+
+	switch (this->GetProtocolFamily())
+	{
+#ifdef SUPPORT_IP6LINKS
+		case AF_INET6:
+		{
+			sockaddr_in6* sin = (sockaddr_in6*)this->ip;
+			inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
+			/* IP addresses starting with a : on irc are a Bad Thing (tm) */
+			if (*buf == ':')
+			{
+				strlcpy(&temp[1], buf, sizeof(temp));
+				*temp = '0';
+				strlcpy(buf, temp, sizeof(temp));
+			}
+			return buf;
+		}
+		break;
+#endif
+		case AF_INET:
+		{
+			sockaddr_in* sin = (sockaddr_in*)this->ip;
+			inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
+			return buf;
+		}
+		break;
+
+		default:
+			log(DEBUG,"Ut oh, '%s' has an unknown protocol family!",this->nick);
+		break;
+	}
+	return "";
+}
+
-- 
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