[vdagent-linux 2/3] Make creation of 'vdagent_file_xfers' optional

[Christophe Fergeau <cfergeau@xxxxxxxxxx>]

This commit only adds if (vdagent_file_xfers != NULL) {} checks before
calling into the file transfer code. This allows to disable file transfer
handling by setting this variable to NULL.
---
 src/vdagent.c | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/src/vdagent.c b/src/vdagent.c
index d7f7aba..3ab2352 100644
--- a/src/vdagent.c
+++ b/src/vdagent.c
@@ -89,25 +89,33 @@ void daemon_read_complete(struct udscs_connection **connp,
         }
         break;
     case VDAGENTD_FILE_XFER_START:
-        vdagent_file_xfers_start(vdagent_file_xfers,
-                                 (VDAgentFileXferStartMessage *)data);
+        if (vdagent_file_xfers != NULL) {
+            vdagent_file_xfers_start(vdagent_file_xfers,
+                                     (VDAgentFileXferStartMessage *)data);
+        }
         free(data);
         break;
     case VDAGENTD_FILE_XFER_STATUS:
-        vdagent_file_xfers_status(vdagent_file_xfers,
-                                  (VDAgentFileXferStatusMessage *)data);
+        if (vdagent_file_xfers != NULL) {
+            vdagent_file_xfers_status(vdagent_file_xfers,
+                                      (VDAgentFileXferStatusMessage *)data);
+        }
         free(data);
         break;
     case VDAGENTD_FILE_XFER_DATA:
-        vdagent_file_xfers_data(vdagent_file_xfers,
-                                (VDAgentFileXferDataMessage *)data);
+        if (vdagent_file_xfers != NULL) {
+            vdagent_file_xfers_data(vdagent_file_xfers,
+                                    (VDAgentFileXferDataMessage *)data);
+        }
         free(data);
         break;
     case VDAGENTD_CLIENT_DISCONNECTED:
         vdagent_x11_client_disconnected(x11);
-        vdagent_file_xfers_destroy(vdagent_file_xfers);
-        vdagent_file_xfers = vdagent_file_xfers_create(client, fx_dir,
-                                                       fx_open_dir, debug);
+        if (vdagent_file_xfers != NULL) {
+            vdagent_file_xfers_destroy(vdagent_file_xfers);
+            vdagent_file_xfers = vdagent_file_xfers_create(client, fx_dir,
+                                                           fx_open_dir, debug);
+        }
         break;
     default:
         syslog(LOG_ERR, "Unknown message from vdagentd type: %d, ignoring",
@@ -298,7 +306,9 @@ reconnect:
         udscs_client_handle_fds(&client, &readfds, &writefds);
     }
 
-    vdagent_file_xfers_destroy(vdagent_file_xfers);
+    if (vdagent_file_xfers != NULL) {
+        vdagent_file_xfers_destroy(vdagent_file_xfers);
+    }
     vdagent_x11_destroy(x11, client == NULL);
     udscs_destroy_connection(&client);
     if (!quit && do_daemonize)
-- 
1.9.0

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