[PATCH] rpc: libssh2: Enable EC host keys

[Bastian Germann]

libssh2 has ECDSA and ED25519 support beginning with v1.9.0. libvirt cannot
make use of those because it will handle them as unknown key types.

Add support for those host key types.

Signed-off-by: Bastian Germann <bastiangermann at fishpost.de>
---
 src/rpc/virnetsshsession.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/rpc/virnetsshsession.c b/src/rpc/virnetsshsession.c
index fe77594..c311e90 100644
--- a/src/rpc/virnetsshsession.c
+++ b/src/rpc/virnetsshsession.c
@@ -389,7 +389,21 @@ virNetSSHCheckHostKey(virNetSSHSessionPtr sess)
         case LIBSSH2_HOSTKEY_TYPE_DSS:
             keyType = LIBSSH2_KNOWNHOST_KEY_SSHDSS;
             break;
-
+#ifdef LIBSSH2_HOSTKEY_TYPE_ED25519
+        /* defs from libssh2 v1.9.0 or later */
+        case LIBSSH2_HOSTKEY_TYPE_ECDSA_256:
+            keyType = LIBSSH2_KNOWNHOST_KEY_ECDSA_256;
+            break;
+        case LIBSSH2_HOSTKEY_TYPE_ECDSA_384:
+            keyType = LIBSSH2_KNOWNHOST_KEY_ECDSA_384;
+            break;
+        case LIBSSH2_HOSTKEY_TYPE_ECDSA_521:
+            keyType = LIBSSH2_KNOWNHOST_KEY_ECDSA_521;
+            break;
+        case LIBSSH2_HOSTKEY_TYPE_ED25519:
+            keyType = LIBSSH2_KNOWNHOST_KEY_ED25519;
+            break;
+#endif
         case LIBSSH2_HOSTKEY_TYPE_UNKNOWN:
         default:
             virReportError(VIR_ERR_SSH, "%s",
-- 
2.31.0