remote: use VIR_DRV_OPEN_REMOTE_USER in ssh transport checks

We currently refuse to connect to remote libvirtd over SSH if we see the
path ends in /session. Earlier on though we checked for /session and set
the VIR_DRV_OPEN_REMOTE_USER flag. There is one subtle distinction
though with the test driver. All test URIs are marked with this flag,
regardless of whether the URI indicates a local or remote connection.
Previously a local connection to the test driver would have used the
unprivileged libvirtd while a remote connection would have tried the
privileged libvirtd. With this we are consistent and use the
unprivileged for both local & remote, if the current user is non-root.
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/remote/remote_driver.c

@@ -1000,7 +1000,7 @@ doRemoteOpen(virConnectPtr conn,
     case trans_libssh2:
         if (!sockname) {
             /* Right now we don't support default session connections */
-            if (STREQ_NULLABLE(conn->uri->path, "/session")) {
+            if (flags & VIR_DRV_OPEN_REMOTE_USER) {
                 virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
                                _("Connecting to session instance without "
                                  "socket path is not supported by the libssh2 "
@@ -1035,7 +1035,7 @@ doRemoteOpen(virConnectPtr conn,
     case trans_libssh:
         if (!sockname) {
             /* Right now we don't support default session connections */
-            if (STREQ_NULLABLE(conn->uri->path, "/session")) {
+            if (flags & VIR_DRV_OPEN_REMOTE_USER) {
                 virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
                                _("Connecting to session instance without "
                                  "socket path is not supported by the libssh "
@@ -1100,7 +1100,7 @@ doRemoteOpen(virConnectPtr conn,
 
         if (!sockname) {
             /* Right now we don't support default session connections */
-            if (STREQ_NULLABLE(conn->uri->path, "/session")) {
+            if (flags & VIR_DRV_OPEN_REMOTE_USER) {
                 virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
                                _("Connecting to session instance without "
                                  "socket path is not supported by the ssh "