When --certificate option is provided, we currently use
SSL_CTX_use_certificate_chain_file() function to add
that certificate. If our single certificate file had multiple
certificates (as a chain), all of them would get added and sent
to the remote peer. But once you call
SSL_CTX_use_certificate_chain_file(), any future calls to
SSL_CTX_add_extra_chain_cert() (called when --peer-ca-cert option
is used) had no effect.

Since our man pages and INSTALL.SSL.md say that --certificate
is used to specify one certificate and additional certificates
are sent via --peer-ca-cert, this commit changes
SSL_CTX_use_certificate_chain_file() use to
SSL_CTX_use_certificate_file(). With this, additional certificates
can now be added via --peer-ca-cert option.

The test case added with this commit would fail without the
above changes.

Signed-off-by: Gurucharan Shetty <gshe...@nicira.com>
---
 lib/stream-ssl.c   |    2 +-
 tests/ovs-vsctl.at |   27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/lib/stream-ssl.c b/lib/stream-ssl.c
index 8b063ba..564c94c 100644
--- a/lib/stream-ssl.c
+++ b/lib/stream-ssl.c
@@ -1071,7 +1071,7 @@ stream_ssl_set_private_key_file(const char *file_name)
 static void
 stream_ssl_set_certificate_file__(const char *file_name)
 {
-    if (SSL_CTX_use_certificate_chain_file(ctx, file_name) == 1) {
+    if (SSL_CTX_use_certificate_file(ctx, file_name, SSL_FILETYPE_PEM) == 1) {
         certificate.read = true;
     } else {
         VLOG_ERR("SSL_use_certificate_file: %s",
diff --git a/tests/ovs-vsctl.at b/tests/ovs-vsctl.at
index cbfa6c2..1ec06e7 100644
--- a/tests/ovs-vsctl.at
+++ b/tests/ovs-vsctl.at
@@ -1336,3 +1336,30 @@ AT_CHECK([ovs-vsctl -t 5 --db=ssl:127.0.0.1:$SSL_PORT 
--private-key=$PKIDIR/vsct
 
 OVSDB_SERVER_SHUTDOWN
 AT_CLEANUP
+
+AT_SETUP([peer ca cert])
+AT_KEYWORDS([ovs-vsctl ssl])
+AT_SKIP_IF([test "$HAVE_OPENSSL" = no])
+PKIDIR=`command pwd`
+OVS_PKI="sh $abs_top_srcdir/utilities/ovs-pki.in --dir=$PKIDIR/pki 
--log=$PKIDIR/ovs-pki.log"
+$OVS_PKI -B 1024 init && \
+$OVS_PKI -B 1024 req+sign vsctl switch && \
+$OVS_PKI -B 1024 req+sign ovsdbserver controller
+
+dnl Create database.
+OVSDB_INIT([conf.db])
+AT_CHECK([ovsdb-server --detach --no-chdir --pidfile="`pwd`"/pid 
--private-key=$PKIDIR/ovsdbserver-privkey.pem 
--certificate=$PKIDIR/ovsdbserver-cert.pem 
--ca-cert=$PKIDIR/pki/switchca/cacert.pem 
--peer-ca-cert=$PKIDIR/pki/controllerca/cacert.pem --remote=pssl:0:127.0.0.1 
--unixctl="`pwd`"/unixctl --log-file="`pwd`"/ovsdb-server.log conf.db], [0], 
[ignore], [ignore])
+ON_EXIT_UNQUOTED([kill `cat pid`])
+SSL_PORT=`parse_listening_port < ovsdb-server.log`
+
+# During bootstrap, the connection gets torn down. So the o/p of ovs-vsctl is 
error.
+AT_CHECK([ovs-vsctl -t 5 --db=ssl:127.0.0.1:$SSL_PORT 
--private-key=$PKIDIR/vsctl-privkey.pem --certificate=$PKIDIR/vsctl-cert.pem 
--bootstrap-ca-cert=$PKIDIR/cacert.pem show], [1], [ignore], [ignore])
+
+# If the bootstrap was successful, the following file should exist.
+OVS_WAIT_UNTIL([test -e $PKIDIR/cacert.pem])
+
+# After bootstrap, the connection should be successful.
+AT_CHECK([ovs-vsctl -t 5 --db=ssl:127.0.0.1:$SSL_PORT 
--private-key=$PKIDIR/vsctl-privkey.pem --certificate=$PKIDIR/vsctl-cert.pem 
--bootstrap-ca-cert=$PKIDIR/cacert.pem show], [0], [ignore], [ignore])
+
+OVSDB_SERVER_SHUTDOWN
+AT_CLEANUP
-- 
1.7.9.5

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