[openwrt/openwrt] unetmsg: fix issuing requests without previously subscribing

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/6fcaf3d589f9cd5c9e5cdf89cc0e651a97175174

commit 6fcaf3d589f9cd5c9e5cdf89cc0e651a97175174
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Mon May 5 11:38:59 2025 +0200

    unetmsg: fix issuing requests without previously subscribing
    
    Perform ACL check if not subscribed. Helps with one-shot requests.
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 .../unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-client.uc       | 7 +++++--
 .../services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd.uc     | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-client.uc b/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-client.uc
index cc971b562b..8b42882152 100644
--- a/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-client.uc
+++ b/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-client.uc
@@ -72,8 +72,11 @@ function client_request(cl, req)
 		return core.handle_message(handle, data, true);
 	case "request":
 		handle = cl.subscribe[name];
-	    if (!handle)
-			return libubus.STATUS_INVALID_ARGUMENT;
+		if (!handle &&
+		    !core.acl_check("subscribe", cl.acl, [ name ]))
+			return libubus.STATUS_PERMISSION_DENIED;
+
+		handle ??= { client: cl.id };
 		return core.handle_request(handle, req, data, true);
 	}
 }
diff --git a/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd.uc b/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd.uc
index 68b0600fe9..393a6ea47a 100644
--- a/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd.uc
+++ b/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd.uc
@@ -111,6 +111,7 @@ function handle_request(handle, req, data, remote)
 
 	for (let cur in handles) {
 		if (!cur || !cur.get_channel) {
+			cb();
 			continue;
 		}
 		let chan = cur.get_channel();