From 88d3e464136db5192e311e4be077aa3db218e5f2 Mon Sep 17 00:00:00 2001
From: Ophestra <cat@gensokyo.uk>
Date: Tue, 25 Nov 2025 04:16:11 +0900
Subject: [PATCH] internal/pipewire: implement Client::UpdateProperties

This is the second message on the captured sample.

Signed-off-by: Ophestra <cat@gensokyo.uk>
---
 internal/pipewire/client.go      |  51 ++++
 internal/pipewire/client_test.go | 442 +++++++++++++++++++++++++++++++
 internal/pipewire/header_test.go |  14 +
 internal/pipewire/pipewire.go    |  35 ---
 4 files changed, 507 insertions(+), 35 deletions(-)
 create mode 100644 internal/pipewire/client.go
 create mode 100644 internal/pipewire/client_test.go

diff --git a/internal/pipewire/client.go b/internal/pipewire/client.go
new file mode 100644
index 0000000..4480dc8
--- /dev/null
+++ b/internal/pipewire/client.go
@@ -0,0 +1,51 @@
+package pipewire
+
+/* pipewire/client.h */
+
+const (
+	PW_TYPE_INTERFACE_Client = PW_TYPE_INFO_INTERFACE_BASE + "Client"
+	PW_CLIENT_PERM_MASK      = PW_PERM_RWXM
+	PW_VERSION_CLIENT        = 3
+
+	PW_ID_CLIENT = 1
+)
+
+const (
+	PW_CLIENT_CHANGE_MASK_PROPS = 1 << iota
+
+	PW_CLIENT_CHANGE_MASK_ALL = 1<<iota - 1
+)
+
+const (
+	PW_CLIENT_EVENT_INFO = iota
+	PW_CLIENT_EVENT_PERMISSIONS
+	PW_CLIENT_EVENT_NUM
+
+	PW_VERSION_CLIENT_EVENTS = 0
+)
+
+const (
+	PW_CLIENT_METHOD_ADD_LISTENER = iota
+	PW_CLIENT_METHOD_ERROR
+	PW_CLIENT_METHOD_UPDATE_PROPERTIES
+	PW_CLIENT_METHOD_GET_PERMISSIONS
+	PW_CLIENT_METHOD_UPDATE_PERMISSIONS
+	PW_CLIENT_METHOD_NUM
+
+	PW_VERSION_CLIENT_METHODS = 0
+)
+
+// ClientUpdateProperties is used to update the properties of a client.
+type ClientUpdateProperties struct {
+	// Props are properties to update on the client.
+	Props *SPADict
+}
+
+// MarshalBinary satisfies [encoding.BinaryMarshaler] via [Marshal].
+func (c *ClientUpdateProperties) MarshalBinary() ([]byte, error) { return Marshal(c) }
+
+// UnmarshalBinary satisfies [encoding.BinaryUnmarshaler] via [Unmarshal].
+func (c *ClientUpdateProperties) UnmarshalBinary(data []byte) error {
+	_, err := Unmarshal(data, c)
+	return err
+}
diff --git a/internal/pipewire/client_test.go b/internal/pipewire/client_test.go
new file mode 100644
index 0000000..744c518
--- /dev/null
+++ b/internal/pipewire/client_test.go
@@ -0,0 +1,442 @@
+package pipewire_test
+
+import (
+	"testing"
+
+	"hakurei.app/internal/pipewire"
+)
+
+func TestClientUpdateProperties(t *testing.T) {
+	encodingTestCases[pipewire.ClientUpdateProperties, *pipewire.ClientUpdateProperties]{
+		{"sample", []byte{
+			// ClientUpdateProperties: size
+			0xf8, 5, 0, 0,
+			// ClientUpdateProperties: struct
+			0xe, 0, 0, 0,
+
+			// ClientUpdateProperties.Props: size
+			0xf0, 5, 0, 0,
+			// ClientUpdateProperties.Props: struct
+			0xe, 0, 0, 0,
+
+			// ClientUpdateProperties.Props.NItems: size
+			4, 0, 0, 0,
+			// ClientUpdateProperties.Props.NItems: int
+			4, 0, 0, 0,
+			0x1e, 0, 0, 0,
+			0, 0, 0, 0,
+
+			// ClientUpdateProperties.Props.Items
+
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+		}, pipewire.ClientUpdateProperties{Props: &pipewire.SPADict{NItems: 0x1e, Items: []pipewire.SPADictItem{
+			{Key: "remote.intention", Value: "manager"},
+			{Key: "application.name", Value: "pw-container"},
+			{Key: "application.process.binary", Value: "pw-container"},
+			{Key: "application.language", Value: "en_US.UTF-8"},
+			{Key: "application.process.id", Value: "1443"},
+			{Key: "application.process.user", Value: "alice"},
+			{Key: "application.process.host", Value: "nixos"},
+			{Key: "application.process.session-id", Value: "1"},
+			{Key: "window.x11.display", Value: ":0"},
+			{Key: "cpu.vm.name", Value: "qemu"},
+			{Key: "log.level", Value: "0"},
+			{Key: "cpu.max-align", Value: "32"},
+			{Key: "default.clock.rate", Value: "48000"},
+			{Key: "default.clock.quantum", Value: "1024"},
+			{Key: "default.clock.min-quantum", Value: "32"},
+			{Key: "default.clock.max-quantum", Value: "2048"},
+			{Key: "default.clock.quantum-limit", Value: "8192"},
+			{Key: "default.clock.quantum-floor", Value: "4"},
+			{Key: "default.video.width", Value: "640"},
+			{Key: "default.video.height", Value: "480"},
+			{Key: "default.video.rate.num", Value: "25"},
+			{Key: "default.video.rate.denom", Value: "1"},
+			{Key: "clock.power-of-two-quantum", Value: "true"},
+			{Key: "link.max-buffers", Value: "64"},
+			{Key: "mem.warn-mlock", Value: "false"},
+			{Key: "mem.allow-mlock", Value: "true"},
+			{Key: "settings.check-quantum", Value: "false"},
+			{Key: "settings.check-rate", Value: "false"},
+			{Key: "core.version", Value: "1.4.7"},
+			{Key: "core.name", Value: "pipewire-alice-1443"},
+		}}}, nil},
+	}.run(t)
+}
diff --git a/internal/pipewire/header_test.go b/internal/pipewire/header_test.go
index 8501dc1..efcea71 100644
--- a/internal/pipewire/header_test.go
+++ b/internal/pipewire/header_test.go
@@ -25,6 +25,20 @@ func TestHeader(t *testing.T) {
 		}, pipewire.Header{ID: pipewire.PW_ID_CORE, Opcode: pipewire.PW_CORE_METHOD_HELLO,
 			Size: 0x18, Sequence: 0, FileCount: 0}, nil},
 
+		{"PW_CLIENT_METHOD_UPDATE_PROPERTIES", []byte{
+			// Id
+			1, 0, 0, 0,
+			// size
+			0, 6, 0,
+			// opcode
+			2,
+			// seq
+			1, 0, 0, 0,
+			// n_fds
+			0, 0, 0, 0,
+		}, pipewire.Header{ID: pipewire.PW_ID_CLIENT, Opcode: pipewire.PW_CLIENT_METHOD_UPDATE_PROPERTIES,
+			Size: 0x600, Sequence: 1, FileCount: 0}, nil},
+
 		{"PW_SECURITY_CONTEXT_METHOD_CREATE", []byte{
 			// Id
 			3, 0, 0, 0,
diff --git a/internal/pipewire/pipewire.go b/internal/pipewire/pipewire.go
index 4b03a54..8f38bce 100644
--- a/internal/pipewire/pipewire.go
+++ b/internal/pipewire/pipewire.go
@@ -14,41 +14,6 @@
 // for any other uses of the protocol.
 package pipewire
 
-/* pipewire/client.h */
-
-const (
-	PW_TYPE_INTERFACE_Client = PW_TYPE_INFO_INTERFACE_BASE + "Client"
-	PW_CLIENT_PERM_MASK      = PW_PERM_RWXM
-	PW_VERSION_CLIENT        = 3
-
-	PW_ID_CLIENT = 1
-)
-
-const (
-	PW_CLIENT_CHANGE_MASK_PROPS = 1 << iota
-
-	PW_CLIENT_CHANGE_MASK_ALL = 1<<iota - 1
-)
-
-const (
-	PW_CLIENT_EVENT_INFO = iota
-	PW_CLIENT_EVENT_PERMISSIONS
-	PW_CLIENT_EVENT_NUM
-
-	PW_VERSION_CLIENT_EVENTS = 0
-)
-
-const (
-	PW_CLIENT_METHOD_ADD_LISTENER = iota
-	PW_CLIENT_METHOD_ERROR
-	PW_CLIENT_METHOD_UPDATE_PROPERTIES
-	PW_CLIENT_METHOD_GET_PERMISSIONS
-	PW_CLIENT_METHOD_UPDATE_PERMISSIONS
-	PW_CLIENT_METHOD_NUM
-
-	PW_VERSION_CLIENT_METHODS = 0
-)
-
 /* pipewire/device.h */
 
 const (