From 02e16ad95fb1f56ab004b01a10aab89f7103c55d Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@mindrot.org>
Date: Fri, 3 Jan 2003 14:42:27 +1100
Subject: [PATCH]  - (djm) Bug #460: Filling utmp[x]->ut_addr_v6 if present.
 Patch from    cjwatson@debian.org

---
 ChangeLog  |  6 ++++--
 loginrec.c | 34 +++++++++++++++++++++++++++++++++-
 2 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 9c85c7993fd..91b4c10bdb4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,9 @@
 20030103
  - (djm) Bug #461: ssh-copy-id fails with no arguments. Patch from 
    cjwatson@debian.org
-
+ - (djm) Bug #460: Filling utmp[x]->ut_addr_v6 if present. Patch from 
+   cjwatson@debian.org
+   
 20030101
   - (stevesk) [session.c sshlogin.c sshlogin.h] complete portable
     parts of pass addrlen with sockaddr * fix.
@@ -921,4 +923,4 @@
      save auth method before monitor_reset_key_state(); bugzilla bug #284;
      ok provos@
 
-$Id: ChangeLog,v 1.2538 2003/01/03 03:34:06 djm Exp $
+$Id: ChangeLog,v 1.2539 2003/01/03 03:42:27 djm Exp $
diff --git a/loginrec.c b/loginrec.c
index 02c3106a3b8..a0d14dbdf56 100644
--- a/loginrec.c
+++ b/loginrec.c
@@ -163,7 +163,7 @@
 #include "log.h"
 #include "atomicio.h"
 
-RCSID("$Id: loginrec.c,v 1.44 2002/09/26 00:38:49 tim Exp $");
+RCSID("$Id: loginrec.c,v 1.45 2003/01/03 03:42:28 djm Exp $");
 
 #ifdef HAVE_UTIL_H
 #  include <util.h>
@@ -609,6 +609,9 @@ void
 construct_utmp(struct logininfo *li,
 		    struct utmp *ut)
 {
+# ifdef HAVE_ADDR_V6_IN_UTMP
+	struct sockaddr_in6 *sa6;
+#  endif
 	memset(ut, '\0', sizeof(*ut));
 
 	/* First fill out fields used for both logins and logouts */
@@ -661,6 +664,19 @@ construct_utmp(struct logininfo *li,
 	if (li->hostaddr.sa.sa_family == AF_INET)
 		ut->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr;
 # endif
+# ifdef HAVE_ADDR_V6_IN_UTMP
+	/* this is just a 128-bit IPv6 address */
+	if (li->hostaddr.sa.sa_family == AF_INET6) {
+		sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa);
+		memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16);
+		if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
+			ut->ut_addr_v6[0] = ut->ut_addr_v6[3];
+			ut->ut_addr_v6[1] = 0;
+			ut->ut_addr_v6[2] = 0;
+			ut->ut_addr_v6[3] = 0;
+		}
+	}
+# endif
 }
 #endif /* USE_UTMP || USE_WTMP || USE_LOGIN */
 
@@ -689,6 +705,9 @@ set_utmpx_time(struct logininfo *li, struct utmpx *utx)
 void
 construct_utmpx(struct logininfo *li, struct utmpx *utx)
 {
+# ifdef HAVE_ADDR_V6_IN_UTMP
+	struct sockaddr_in6 *sa6;
+#  endif
 	memset(utx, '\0', sizeof(*utx));
 # ifdef HAVE_ID_IN_UTMPX
 	line_abbrevname(utx->ut_id, li->line, sizeof(utx->ut_id));
@@ -725,6 +744,19 @@ construct_utmpx(struct logininfo *li, struct utmpx *utx)
 	if (li->hostaddr.sa.sa_family == AF_INET)
 		utx->ut_addr = li->hostaddr.sa_in.sin_addr.s_addr;
 # endif
+# ifdef HAVE_ADDR_V6_IN_UTMP
+	/* this is just a 128-bit IPv6 address */
+	if (li->hostaddr.sa.sa_family == AF_INET6) {
+		sa6 = ((struct sockaddr_in6 *)&li->hostaddr.sa);
+		memcpy(ut->ut_addr_v6, sa6->sin6_addr.s6_addr, 16);
+		if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
+			ut->ut_addr_v6[0] = ut->ut_addr_v6[3];
+			ut->ut_addr_v6[1] = 0;
+			ut->ut_addr_v6[2] = 0;
+			ut->ut_addr_v6[3] = 0;
+		}
+	}
+# endif
 # ifdef HAVE_SYSLEN_IN_UTMPX
 	/* ut_syslen is the length of the utx_host string */
 	utx->ut_syslen = MIN(strlen(li->hostname), sizeof(utx->ut_host));