iprop slave: try incremental after complete xfer

The following sequence of events results in slave B having a stale HDB:

 - slave A connects to master, master dumps HDB for the slave
 - kadm5 operations
 - slave B connects to master, master sends previously dumped HDB

slave B won't discover any updates until the next transaction.

The fix is simple: the slave should immediately call ihave() after
receiving a complete HDB.

lib/kadm5/ipropd_slave.c

@@ -727,8 +727,8 @@ main(int argc, char **argv)
 	krb5_warnx(context, "ipropd-slave started at version: %ld",
 		   (long)server_context->log_context.version);
 
-	ret = ihave (context, auth_context, master_fd,
+	ret = ihave(context, auth_context, master_fd,
-		     server_context->log_context.version);
+		    server_context->log_context.version);
 	if (ret)
 	    goto retry;
 
@@ -777,30 +777,33 @@ main(int argc, char **argv)
 	    }
 
 	    sp = krb5_storage_from_mem (out.data, out.length);
-	    krb5_ret_int32 (sp, &tmp);
+	    krb5_ret_int32(sp, &tmp);
 	    switch (tmp) {
 	    case FOR_YOU :
-		receive (context, sp, server_context);
+		receive(context, sp, server_context);
-		ret = ihave (context, auth_context, master_fd,
+		ret = ihave(context, auth_context, master_fd,
-			     server_context->log_context.version);
+			    server_context->log_context.version);
-		if (ret) {
-		    connected = FALSE;
-		} else {
-		    is_up_to_date(context, status_file, server_context);
-		}		
-
-		break;
-	    case TELL_YOU_EVERYTHING :
-		ret = receive_everything (context, master_fd, server_context,
-					  auth_context);
 		if (ret)
 		    connected = FALSE;
 		else
 		    is_up_to_date(context, status_file, server_context);
+
+		break;
+	    case TELL_YOU_EVERYTHING :
+		ret = receive_everything(context, master_fd, server_context,
+					 auth_context);
+                if (ret == 0) {
+                    ret = ihave(context, auth_context, master_fd,
+                                server_context->log_context.version);
+                }
+                if (ret)
+		    connected = FALSE;
+                else
+                    is_up_to_date(context, status_file, server_context);
 		break;
 	    case ARE_YOU_THERE :
 		is_up_to_date(context, status_file, server_context);
-		send_im_here (context, master_fd, auth_context);
+		send_im_here(context, master_fd, auth_context);
 		break;
 	    case YOU_HAVE_LAST_VERSION:
 		is_up_to_date(context, status_file, server_context);

tests/kdc/Makefile.am

@@ -12,6 +12,7 @@ noinst_DATA = \
 	krb5-weak.conf \
 	krb5-pkinit.conf \
 	krb5-pkinit-win.conf \
+	krb5-slave2.conf \
 	krb5-slave.conf
 
 check_SCRIPTS = $(SCRIPT_TESTS) 
@@ -138,7 +139,7 @@ check-pkinit: check-pkinit.in Makefile krb5-pkinit.conf
 	$(chmod) +x check-pkinit.tmp && \
 	mv check-pkinit.tmp check-pkinit
 
-check-iprop: check-iprop.in Makefile krb5.conf krb5-slave.conf
+check-iprop: check-iprop.in Makefile krb5.conf krb5-slave.conf krb5-slave2.conf
 	$(do_subst) < $(srcdir)/check-iprop.in > check-iprop.tmp && \
 	$(chmod) +x check-iprop.tmp && \
 	mv check-iprop.tmp check-iprop
@@ -212,6 +213,13 @@ krb5-slave.conf: krb5.conf.in Makefile
 	   -e 's,[@]kdc[@],.slave,g' < $(srcdir)/krb5.conf.in > krb5-slave.conf.tmp && \
 	mv krb5-slave.conf.tmp krb5-slave.conf
 
+krb5-slave2.conf: krb5.conf.in Makefile
+	$(do_subst) \
+	   -e 's,[@]WEAK[@],true,g' \
+	   -e 's,[@]dk[@],,g' \
+	   -e 's,[@]kdc[@],.slave2,g' < $(srcdir)/krb5.conf.in > krb5-slave2.conf.tmp && \
+	mv krb5-slave2.conf.tmp krb5-slave2.conf
+
 krb5-pkinit.conf: krb5-pkinit.conf.in Makefile
 	$(do_subst) -e 's,[@]w2k[@],no,g' < $(srcdir)/krb5-pkinit.conf.in > krb5-pkinit.conf.tmp && \
 	mv krb5-pkinit.conf.tmp krb5-pkinit.conf
@@ -247,6 +255,7 @@ CLEANFILES= \
 	krb5-hdb-mitdb.conf \
 	krb5-pkinit-win.conf \
 	krb5-pkinit.conf \
+	krb5-slave2.conf \
 	krb5-slave.conf \
 	krb5-weak.conf \
 	krb5.conf \

tests/kdc/check-iprop.in

@@ -172,7 +172,7 @@ sleep 2
 KRB5_CONFIG="${objdir}/krb5-slave.conf" \
 ${kadmin} -l get host/bar@${R} > /dev/null 2>/dev/null && exit 1
 
-echo "kill slave"
+echo "kill slave and remove log and database"
 > iprop-stats
 sh ${leaks_kill} ipropd-slave $ipds || exit 1
 rm -f iprop-slave-status
@@ -181,6 +181,8 @@ ${EGREP} 'iprop/slave.test.h5l.se@TEST.H5L.SE.*Down' iprop-stats >/dev/null || e
 
 # ----------------- checking: slave is missing changes while down
 
+rm current.slave.log current-db.slave* || exit 1
+
 echo "doing changes while slave is down"
 ${kadmin} -l cpw --random-password user@${R} > /dev/null || exit 1
 ${kadmin} -l cpw --random-password user@${R} > /dev/null || exit 1