v4.4.0

Release v4.4.0

Guard the C++ handler/callback invocations against exceptions so a throw
can no longer unwind through libubus/libubox C frames to std::terminate
(which would kill the whole process - e.g. a supervisor daemon losing all
its supervision on one bad request):

- common_handler() wraps the cb / dcb calls: a throwing ubus method
  handler now returns UBUS_STATUS_UNKNOWN_ERROR instead of aborting.
- common_task() wraps the uloop task callback: a throwing task is dropped
  rather than fatal.

Both log the exception to stderr on catch. The library previously only
caught while parsing the *incoming* blob, not while running user handlers.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v4.3.0

Release v4.3.0

Bugfix release for the subscription/notify feature added in v4.2.0.

- subscription destructor now also calls ubus_unregister_subscriber()
  (not only ubus_unsubscribe()); without it the subscriber object was
  left registered in the ubus context, so once the subscription state
  was freed the context held a dangling pointer -> use-after-free at the
  next object traversal / ubus_shutdown.
- ~ubus() clears the ubus_subscriber_cbs map too, matching the other
  static maps.
- Drop the unused subscription::state::cb (notify_trampoline reads the
  static map) and the dead iterator writes in uloop's common_task().
- uloop::exit() no longer re-memsets exit_task while it is still pending,
  so a second exit() in the same cycle can't corrupt a node that is
  still in the uloop tree.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v4.2.0

Release v4.2.0

feat: add subscription/notification support and batch calls

- Add `ubus::subscription` RAII handle for subscribing to object
  notifications (`subscribe()` / `notify()`).
- Add `call_batch()` for executing multiple synchronous calls in one
  go, returning results in order.
- Add `subscribe_cb` to `add_object()` so objects know when they
  gain or lose subscribers.
- Add subscriber.cpp and notifier.cpp examples demonstrating the
  pub/sub pattern.
- Add examples for subscriber and notifier and move all examples to
  examples directory in root of project.
- Update README.md with full API documentation for the new features.

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v4.1.0

Release v4.1.0

Fix memory leaks, double JSON serialization, and iterator safety

- Clear global handler maps (ubus_methods, ubus_event_cbs) in ubus destructor
  to prevent leaks on re-instantiation
- Fix uloop::task::add() to use iterator instead of operator[] for safety
- Add JSON serialization error checks in call_async() and send_event()
- Initialize exit_task with memset before each use
- Reset uloop_initialized flag in uloop::run() cleanup
- Switch main.cpp to std::unique_ptr for exception-safe ubus lifetime

All changes verified with Valgrind: 0 leaks, 0 errors in example code.

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v4.0.0

Release v4.0.0

Update the json_cpp submodule to v5.0.0 and substantially extend the wrapper.

Fixes:
- Use a local blob_buf in the request handler and in call() instead of a shared
  global, removing a reentrancy hazard when a call() pumps the loop while a
  request arrives (or a handler issues a call).
- Free the blobmsg_format_json() result (previously leaked on every request).
- Map JSON int to BLOBMSG_TYPE_INT64 (was INT32) in method argument policy.
- Drop the unnecessary -luci link (the code uses no uci; OpenWrt and Alpine both
  link fine without it).
- Link order: pass libraries after the objects, so it links on modern
  --as-needed toolchains (e.g. Alpine), not only on OpenWrt's lenient ld.

New capabilities:
- Deferred replies: a method may set dcb and reply later via a copyable
  ubus::request handle (request.reply()/valid()) - slow work no longer blocks
  the event loop.
- Asynchronous calls: call_async(obj, cmd, args, cb) with cb(result, ok).
- Events: send_event() to broadcast and add_event_handler(pattern, cb) to listen.
- Auto-reconnect (on by default): survive a ubusd restart, re-registering all
  objects and event handlers; also makes construction safe when ubusd is down.

The synchronous cb and call() API is unchanged, so existing code keeps working.

Docs/CI:
- README rewritten as a full API reference with examples.
- build.yml: CI build on push/pull_request in an Alpine (edge/testing) container
  that provides libubox/ubus; release workflow bumped to checkout@v5 and @v2 actions.

Verified on a live ubus: sync + deferred (500ms defer) methods, async call,
event send/receive, all working.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v3.3.0

Release v3.3.0

This release uses updated json_cpp which formats
float values better for human readability.

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v3.2.0

Release 3.2.0

Fixes issue where every char* lost it's content.
Fix uses strdup to allocate and duplicate it permanently
to char pointers, and what is then allocated with strdup-
must also be free'd - so ubus::Object destructor was
created to handle that.

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v3.1.2

Release v3.1.2

 - Removal of unnecessary comment

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v3.1.1

Release v3.1.1

updates json_cpp submodule

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>

v3.1.0

Release v3.1.0

Fixes to Makefiles

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>