feat: notification proxy (#70)

* init

* chore: clippy and fmt

* feat: ffi wrapper

* feat: multi-observe and timeout to notification proxy

* fix: nitpicks

1. proxy death its onw error in emun #69
2. make returned stream actual stream, copied from 54439b85dd/idevice/src/services/bt_packet_logger.rs (L126-L138)

cpp/src/notification_proxy.cpp

@@ -0,0 +1,82 @@
+// Jackson Coxson
+
+#include <idevice++/bindings.hpp>
+#include <idevice++/ffi.hpp>
+#include <idevice++/notification_proxy.hpp>
+#include <idevice++/provider.hpp>
+
+namespace IdeviceFFI {
+
+Result<NotificationProxy, FfiError> NotificationProxy::connect(Provider& provider) {
+    NotificationProxyClientHandle* out = nullptr;
+    FfiError               e(::notification_proxy_connect(provider.raw(), &out));
+    if (e) {
+        provider.release();
+        return Err(e);
+    }
+    return Ok(NotificationProxy::adopt(out));
+}
+
+Result<NotificationProxy, FfiError> NotificationProxy::from_socket(Idevice&& socket) {
+    NotificationProxyClientHandle* out = nullptr;
+    FfiError               e(::notification_proxy_new(socket.raw(), &out));
+    if (e) {
+        return Err(e);
+    }
+    socket.release();
+    return Ok(NotificationProxy::adopt(out));
+}
+
+Result<void, FfiError> NotificationProxy::post_notification(const std::string& name) {
+    FfiError e(::notification_proxy_post(handle_.get(), name.c_str()));
+    if (e) {
+        return Err(e);
+    }
+    return Ok();
+}
+
+Result<void, FfiError> NotificationProxy::observe_notification(const std::string& name) {
+    FfiError e(::notification_proxy_observe(handle_.get(), name.c_str()));
+    if (e) {
+        return Err(e);
+    }
+    return Ok();
+}
+
+Result<void, FfiError> NotificationProxy::observe_notifications(const std::vector<std::string>& names) {
+    std::vector<const char*> ptrs;
+    ptrs.reserve(names.size() + 1);
+    for (const auto& n : names) {
+        ptrs.push_back(n.c_str());
+    }
+    ptrs.push_back(nullptr);
+    FfiError e(::notification_proxy_observe_multiple(handle_.get(), ptrs.data()));
+    if (e) {
+        return Err(e);
+    }
+    return Ok();
+}
+
+Result<std::string, FfiError> NotificationProxy::receive_notification() {
+    char* name_ptr = nullptr;
+    FfiError e(::notification_proxy_receive(handle_.get(), &name_ptr));
+    if (e) {
+        return Err(e);
+    }
+    std::string name(name_ptr);
+    ::notification_proxy_free_string(name_ptr);
+    return Ok(std::move(name));
+}
+
+Result<std::string, FfiError> NotificationProxy::receive_notification_with_timeout(u_int64_t interval) {
+    char*    name_ptr = nullptr;
+    FfiError e(::notification_proxy_receive_with_timeout(handle_.get(), interval, &name_ptr));
+    if (e) {
+        return Err(e);
+    }
+    std::string name(name_ptr);
+    ::notification_proxy_free_string(name_ptr);
+    return Ok(std::move(name));
+}
+
+} // namespace IdeviceFFI