[libvirt] [PATCH] Sanity check explicit TLS file paths

[Daniel P. Berrange]

When providing explicit x509 cert/key paths in libvirtd.conf,
the user must provide all three. If one or more is missed,
this leads to obscure errors at runtime when negotiating
the TLS session

Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
---
 daemon/libvirtd.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c
index 9b98f33..40aa2b6 100644
--- a/daemon/libvirtd.c
+++ b/daemon/libvirtd.c
@@ -544,6 +544,22 @@ daemonSetupNetworking(virNetServerPtr srv,
             if (config->ca_file ||
                 config->cert_file ||
                 config->key_file) {
+                if (!config->ca_file) {
+                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                                   "No CA certificate path set to match server key/cert");
+                    goto cleanup;
+                }
+                if (!config->cert_file) {
+                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                                   "No server certificate path set to match server key");
+                    goto cleanup;
+                }
+                if (!config->key_file) {
+                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                                   "No server key path set to match server cert");
+                    goto cleanup;
+                }
+                VIR_DEBUG("Using CA='%s' cert='%s' key='%s'", config->ca_file, config->cert_file, config->key_file);
                 if (!(ctxt = virNetTLSContextNewServer(config->ca_file,
                                                        config->crl_file,
                                                        config->cert_file,
-- 
2.9.3