- (djm) Bug #460: Filling utmp[x]->ut_addr_v6 if present. Patch from

   cjwatson@debian.org

1 files changed, 33 insertions, 1 deletions

diff --git a/loginrec.c b/loginrec.c
index 02c3106a3..a0d14dbdf 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));