[PATCH pve-firewall v3] api: aliases: make cidr optional on update and preserve comment

[Arthur Bied-Charreton <a.bied-charreton@proxmox.com>]

Updating an alias required passing its CIDR, and dropped the existing
comment unless it was passed again. Clients therefore had to fetch the
alias first just to send back the currently configured CIDR and comment.

Make 'cidr' optional in PUT .../firewall/aliases/{name} and keep the
existing CIDR and comment if none is passed. Passing an empty comment
still clears it.

Signed-off-by: Arthur Bied-Charreton <a.bied-charreton@proxmox.com>
---
 src/PVE/API2/Firewall/Aliases.pm | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/PVE/API2/Firewall/Aliases.pm b/src/PVE/API2/Firewall/Aliases.pm
index 4f6960d..02835b3 100644
--- a/src/PVE/API2/Firewall/Aliases.pm
+++ b/src/PVE/API2/Firewall/Aliases.pm
@@ -215,7 +215,7 @@ sub register_update_alias {
 
     $properties->{name} = $api_properties->{name};
     $properties->{rename} = $api_properties->{rename};
-    $properties->{cidr} = $api_properties->{cidr};
+    $properties->{cidr} = { $api_properties->{cidr}->%*, optional => 1 };
     $properties->{comment} = $api_properties->{comment};
     $properties->{digest} = get_standard_option('pve-config-digest');
 
@@ -251,8 +251,11 @@ sub register_update_alias {
 
                     raise_param_exc({ name => "no such alias" }) if !$aliases->{$name};
 
-                    my $data = { name => $param->{name}, cidr => $param->{cidr} };
-                    $data->{comment} = $param->{comment} if $param->{comment};
+                    my $data = {
+                        name => $param->{name},
+                        cidr => $param->{cidr} // $aliases->{$name}->{cidr},
+                        comment => $param->{comment} // $aliases->{$name}->{comment},
+                    };
 
                     $aliases->{$name} = $data;
 
-- 
2.47.3