From 2115bd71dc5307cdcda1b7d7be3b9d9b0545531f Mon Sep 17 00:00:00 2001
From: attilamolnar <attilamolnar@hush.com>
Date: Mon, 9 Jul 2012 15:35:12 +0200
Subject: [PATCH] Call OnUserSetIP() whenever the IP of a local user changes,
 set ident,host,dhost in LocalUser constructor

---
 include/users.h     |  6 ++++++
 src/usermanager.cpp |  6 ------
 src/users.cpp       | 42 ++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 46 insertions(+), 8 deletions(-)

diff --git a/include/users.h b/include/users.h
index 57dea3fa5..5a8864cdd 100644
--- a/include/users.h
+++ b/include/users.h
@@ -395,6 +395,8 @@ class CoreExport User : public Extensible
 	 */
 	bool SetClientIP(const char* sip);
 
+	void SetClientIP(const irc::sockets::sockaddrs& sa);
+
 	/** Constructor
 	 * @throw CoreException if the UID allocated to the user already exists
 	 */
@@ -819,6 +821,10 @@ class CoreExport LocalUser : public User, public InviteBase
 	 */
 	void SetClass(const std::string &explicit_name = "");
 
+	bool SetClientIP(const char* sip);
+
+	void SetClientIP(const irc::sockets::sockaddrs& sa);
+
 	void SendText(const std::string& line);
 	void Write(const std::string& text);
 	void Write(const char*, ...) CUSTOM_PRINTF(2, 3);
diff --git a/src/usermanager.cpp b/src/usermanager.cpp
index 785d23625..d65f47128 100644
--- a/src/usermanager.cpp
+++ b/src/usermanager.cpp
@@ -66,16 +66,10 @@ void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs
 	New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
 	(*(this->clientlist))[New->nick] = New;
 
-	New->ident.assign("unknown");
-
 	New->registered = REG_NONE;
 	New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
 	New->lastping = 1;
 
-	/* Smarter than your average bear^H^H^H^Hset of strlcpys. */
-	New->dhost.assign(New->GetIPString(), 0, 64);
-	New->host.assign(New->GetIPString(), 0, 64);
-
 	ServerInstance->Users->AddLocalClone(New);
 	ServerInstance->Users->AddGlobalClone(New);
 
diff --git a/src/users.cpp b/src/users.cpp
index 6e282f7c0..f211f6b49 100644
--- a/src/users.cpp
+++ b/src/users.cpp
@@ -222,10 +222,22 @@ LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::so
 	bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 	already_sent(0)
 {
+	ident = "unknown";
 	lastping = 0;
 	eh.SetFd(myfd);
-	memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 	memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
+
+	/*
+	 * Initialize host and dhost here to the user's IP.
+	 * It is important to do this before calling SetClientIP()
+	 * as that can pass execution to modules that expect these
+	 * fields to be valid.
+	 */
+
+	int port;
+	irc::sockets::satoap(*client, host, port);
+	dhost = host;
+	SetClientIP(*client);
 }
 
 User::~User()
@@ -980,10 +992,36 @@ irc::sockets::cidr_mask User::GetCIDRMask()
 
 bool User::SetClientIP(const char* sip)
 {
-	this->cachedip = "";
+	cachedip.clear();
 	return irc::sockets::aptosa(sip, 0, client_sa);
 }
 
+void User::SetClientIP(const irc::sockets::sockaddrs& sa)
+{
+	cachedip.clear();
+	memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
+}
+
+bool LocalUser::SetClientIP(const char* sip)
+{
+	irc::sockets::sockaddrs sa;
+	if (!irc::sockets::aptosa(sip, 0, sa))
+		// Invalid
+		return false;
+
+	LocalUser::SetClientIP(sa);
+	return true;
+}
+
+void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa)
+{
+	if (sa != client_sa)
+	{
+		User::SetClientIP(sa);
+		FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
+	}
+}
+
 static std::string wide_newline("\r\n");
 
 void User::Write(const std::string& text)
-- 
2.39.5