[PATCH proxmox-backup v2 2/3] fix #6990: server: drop verify state on push job

[Jakob Klocker <j.klocker@proxmox.com>]

When pushing a snapshot the target manifest is recreated from the source
manifest, copying its verify_state. As with pull, this makes the pushed
snapshot appear verified on the remote without its stored copy having
been checked there.
Strip verify_state after copying the unprotected section so the pushed
snapshot is verified independently on the target.

Link: https://bugzilla.proxmox.com/show_bug.cgi?id=6990
Signed-off-by: Jakob Klocker <j.klocker@proxmox.com>
---
 src/server/push.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/server/push.rs b/src/server/push.rs
index 9a69f5ce8..456b025fd 100644
--- a/src/server/push.rs
+++ b/src/server/push.rs
@@ -1416,6 +1416,13 @@ pub(crate) async fn push_snapshot(
     } else {
         target_manifest.signature = source_manifest.signature.clone();
     };
+
+    if let Some(unprotected) = target_manifest.unprotected.as_object_mut() {
+        unprotected.remove("verify_state");
+    } else {
+        bail!("Encountered unexpected manifest without 'unprotected' section.");
+    }
+
     // FIXME: replace me with to_data_blob once there is an upload_blob
     let manifest_string =
         target_manifest.to_string(encrypt_using_key.map(|(_, config)| config).as_deref())?;
-- 
2.47.3