Martin,

> rsync 2.4.7pre4 now includes IPv6 support based on the KAME.net patch,
> plus code from other groups including ISC, OpenBSD and the OpenSSH
> portability team.  Thankyou to everybody who has helped with this.

client_addr(), client_name() always fails for IPv6 connection sice in
most of system,
   sizeof(struct sockaddr_in) < sizeof(struct sockaddr) < sizeof(struct 
sockaddr_in6)

you should use sockaddr_storage for getpeername(). here is the patch.

this patch does not contains compatible declaration and detecting by
configure for the system which does not have struct sockaddr_storage.

I'll prepare the patch if necessary.

---
Munechika SUMIKAWA @ KAME Project

Index: socket.c
===================================================================
RCS file: /cvsroot/apps/rsync/socket.c,v
retrieving revision 1.1.1.4
retrieving revision 1.15
diff -u -r1.1.1.4 -r1.15
--- socket.c    2001/11/28 20:07:38     1.1.1.4
+++ socket.c    2001/12/03 06:02:32     1.15
@@ -372,7 +379,7 @@
        while (1) {
                fd_set fds;
                int fd;
-               struct sockaddr addr;
+               struct sockaddr_storage addr;
                int in_addrlen = sizeof(addr);
 
                /* close log file before the potentially very long select so
@@ -555,7 +562,7 @@
  **/
 char *client_addr(int fd)
 {
-       struct sockaddr ss;
+       struct sockaddr_storage ss;
        int     length = sizeof(ss);
        static char addr_buf[100];
        static int initialised;
@@ -564,11 +571,10 @@
 
        initialised = 1;
 
-       if (getpeername(fd, &ss, &length)) {
+       if (getpeername(fd, (struct sockaddr *)&ss, &length)) {
                exit_cleanup(RERR_SOCKETIO);
        }
-
-       getnameinfo(&ss, length,
+       getnameinfo((struct sockaddr *)&ss, length,
                addr_buf, sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
        return addr_buf;
 }
@@ -579,7 +585,7 @@
  **/
 char *client_name(int fd)
 {
-       struct sockaddr ss;
+       struct sockaddr_storage ss;
        int     length = sizeof(ss);
        static char name_buf[100];
        static char port_buf[100];
@@ -602,7 +608,7 @@
        }
 
 #ifdef INET6
-        if (ss.sa_family == AF_INET6 && 
+        if (ss.ss_family == AF_INET6 && 
            IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&ss)->sin6_addr)) {
                struct sockaddr_in6 sin6;
                struct sockaddr_in *sin;
@@ -646,7 +652,7 @@
 
        /* XXX sin6_flowinfo and other fields */
        for (res = res0; res; res = res->ai_next) {
-               if (res->ai_family != ss.sa_family)
+               if (res->ai_family != ss.ss_family)
                        continue;
                if (res->ai_addrlen != length)
                        continue;


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