[pbs-devel] [PATCH proxmox] rest-server: accept empty body as valid parameters

[Dominik Csapak <d.csapak@proxmox.com>]

technically an empty string is not valid json, but when sending an api
request without any parameters, treating the empty body as an empty
parameter hash instead of an error, makes the the api more robust for
clients

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 proxmox-rest-server/src/rest.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/proxmox-rest-server/src/rest.rs b/proxmox-rest-server/src/rest.rs
index 0ee9fab..2ccd4d5 100644
--- a/proxmox-rest-server/src/rest.rs
+++ b/proxmox-rest-server/src/rest.rs
@@ -349,7 +349,12 @@ async fn get_request_parameters<S: 'static + BuildHasher + Send>(
         std::str::from_utf8(&body).map_err(|err| format_err!("Request body not uft8: {}", err))?;
 
     if is_json {
-        let mut params: Value = serde_json::from_str(utf8_data)?;
+        // treat empty body as empty paramater hash
+        let mut params: Value = if utf8_data.is_empty() {
+            Value::Object(serde_json::Map::new())
+        } else {
+            serde_json::from_str(utf8_data)?
+        };
         for (k, v) in uri_param {
             if let Some((_optional, prop_schema)) = param_schema.lookup(&k) {
                 params[&k] = prop_schema.parse_simple_value(&v)?;
-- 
2.30.2