fix: 复用皮肤站逻辑并稳定玩家头像

apps/app/build.rs

@@ -320,6 +320,7 @@ fn main() {
                     .commands(&[
                         "get_available_capes",
                         "get_available_skins",
+                        "get_default_skins",
                         "add_and_equip_custom_skin",
                         "equip_skin",
                         "remove_custom_skin",

apps/app/src/api/minecraft_skins.rs

@@ -10,6 +10,7 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
         .invoke_handler(tauri::generate_handler![
             get_available_capes,
             get_available_skins,
+            get_default_skins,
             add_and_equip_custom_skin,
             equip_skin,
             remove_custom_skin,
@@ -40,6 +41,12 @@ pub async fn get_available_skins() -> Result<Vec<Skin>> {
     Ok(minecraft_skins::get_available_skins().await?)
 }
 
+/// `invoke('plugin:minecraft-skins|get_default_skins')`
+#[tauri::command]
+pub async fn get_default_skins() -> Result<Vec<Skin>> {
+    Ok(minecraft_skins::get_default_skins())
+}
+
 /// `invoke('plugin:minecraft-skins|add_and_equip_custom_skin', texture_blob, variant, cape)`
 ///
 /// See also: [minecraft_skins::add_and_equip_custom_skin]

apps/app/src/skin_site_bridge.js

@@ -15,6 +15,8 @@
 	let pending
 	const pendingLuck = new Map()
 	const pendingPlayers = new Map()
+	const pendingSkinUpdates = new Map()
+	let knownPlayers = new Map()
 	let snapshot = { status: 'checking', user: null }
 
 	function publish(status, user = null) {
@@ -40,6 +42,106 @@
 		)
 	}
 
+	function publishSkinUpdate(requestId, result) {
+		if (!parentOrigin) return
+		window.parent.postMessage(
+			{ type: 'starlight-skin-update-result', requestId, ...result },
+			parentOrigin,
+		)
+	}
+
+	// Keep this geometry identical to the skin site's SkinRender.renderHead.
+	// In particular, the site does not infer texture dimensions before cropping.
+	// Rendering here keeps the source on the skin site's origin and only exposes
+	// the finished PNG to the launcher.
+	function renderPlayerHead(skinSource) {
+		return new Promise((resolve, reject) => {
+			const image = new Image()
+			const timeout = setTimeout(() => reject(new Error('Skin rendering timed out.')), 8_000)
+			image.crossOrigin = 'anonymous'
+			image.onerror = () => {
+				clearTimeout(timeout)
+				reject(new Error('Unable to load the skin texture.'))
+			}
+			image.onload = () => {
+				clearTimeout(timeout)
+				try {
+					const buffer = document.createElement('canvas')
+					buffer.width = 18
+					buffer.height = 18
+					const context = buffer.getContext('2d')
+					if (!context) throw new Error('Unable to create the skin renderer.')
+					context.imageSmoothingEnabled = false
+					context.drawImage(image, 8, 8, 8, 8, 1, 1, 16, 16)
+					context.globalCompositeOperation = 'source-over'
+					context.drawImage(image, 40, 8, 8, 8, 0, 0, 18, 18)
+
+					const output = document.createElement('canvas')
+					output.width = 36
+					output.height = 36
+					const outputContext = output.getContext('2d')
+					if (!outputContext) throw new Error('Unable to create the skin renderer.')
+					outputContext.imageSmoothingEnabled = false
+					outputContext.drawImage(buffer, 0, 0, 18, 18, 0, 0, 36, 36)
+					resolve(output.toDataURL('image/png'))
+				} catch (error) {
+					reject(error)
+				}
+			}
+			image.src = skinSource
+		})
+	}
+
+	function serializePlayerSkin(skinSource) {
+		return new Promise((resolve, reject) => {
+			const image = new Image()
+			const timeout = setTimeout(() => reject(new Error('Skin loading timed out.')), 8_000)
+			image.crossOrigin = 'anonymous'
+			image.onerror = () => {
+				clearTimeout(timeout)
+				reject(new Error('Unable to load the skin texture.'))
+			}
+			image.onload = () => {
+				clearTimeout(timeout)
+				try {
+					const width = image.naturalWidth || image.width
+					const height = image.naturalHeight || image.height
+					if (!width || !height) throw new Error('The skin texture is empty.')
+					const canvas = document.createElement('canvas')
+					canvas.width = width
+					canvas.height = height
+					const context = canvas.getContext('2d')
+					if (!context) throw new Error('Unable to create the skin renderer.')
+					context.imageSmoothingEnabled = false
+					context.drawImage(image, 0, 0)
+					const dataUrl = canvas.toDataURL('image/png')
+					if (dataUrl.length > 2_000_000) throw new Error('The skin texture is too large.')
+					resolve(dataUrl)
+				} catch (error) {
+					reject(error)
+				}
+			}
+			image.src = skinSource
+		})
+	}
+
+	function sleep(delay) {
+		return new Promise((resolve) => setTimeout(resolve, delay))
+	}
+
+	function pngDataUrlToBlob(dataUrl) {
+		if (
+			typeof dataUrl !== 'string' ||
+			dataUrl.length > 2_000_000 ||
+			!/^data:image\/png;base64,[a-z0-9+/]+={0,2}$/i.test(dataUrl)
+		)
+			throw new Error('Invalid skin texture.')
+		const bytes = atob(dataUrl.slice(dataUrl.indexOf(',') + 1))
+		const buffer = new Uint8Array(bytes.length)
+		for (let index = 0; index < bytes.length; index += 1) buffer[index] = bytes.charCodeAt(index)
+		return new Blob([buffer], { type: 'image/png' })
+	}
+
 	async function requestPlayers(requestId) {
 		if (pendingPlayers.has(requestId)) return
 		let token
@@ -57,7 +159,6 @@
 
 		const controller = new AbortController()
 		pendingPlayers.set(requestId, controller)
-		const timeout = setTimeout(() => controller.abort(), 10_000)
 		try {
 			const response = await fetch('/starlight/skin/player', {
 				headers: { Authorization: `Bearer ${token}` },
@@ -84,7 +185,59 @@
 				return [{ uuid: player.uuid, name: player.name, isMojang: player.isMojang === true }]
 			})
 			if (response.ok && players) {
-				publishPlayers(requestId, { ok: true, players })
+				knownPlayers = new Map(players.map((player) => [player.uuid, player]))
+				// Match the skin site: stagger texture requests by 150 ms so the
+				// service is not hit with a burst that can drop individual players.
+				const skinResults = await Promise.all(
+					players.map(async (player, index) => {
+						if (index > 0) await sleep(index * 150)
+						try {
+							const skinResponse = await fetch(
+								`/starlight/skin/player/skin/${encodeURIComponent(player.uuid)}`,
+								{
+									headers: { Authorization: `Bearer ${token}` },
+									signal: controller.signal,
+									cache: 'no-store',
+									redirect: 'error',
+								},
+							)
+							const skinBody = await skinResponse.json().catch(() => null)
+							if (
+								!skinResponse.ok ||
+								!skinBody?.payload ||
+								typeof skinBody.payload !== 'object'
+							)
+								return { player, skinData: null }
+							return { player, skinData: skinBody.payload }
+						} catch {
+							return { player, skinData: null }
+						}
+					}),
+				)
+				const playersWithSkins = await Promise.all(
+					skinResults.map(async ({ player, skinData }) => {
+						if (!skinData) return { ...player, skinState: 'error' }
+						try {
+							const skinSource = skinData.skin
+							if (typeof skinSource !== 'string' || !skinSource.trim()) {
+								return { ...player, skinState: 'empty' }
+							}
+							const headDataUrl = await renderPlayerHead(skinSource.trim())
+							const skinDataUrl = await serializePlayerSkin(skinSource.trim()).catch(
+								() => undefined,
+							)
+							const model = skinData.model === 'slim' ? 'slim' : 'default'
+							return { ...player, skinState: 'ready', headDataUrl, skinDataUrl, model }
+						} catch {
+							return { ...player, skinState: 'error' }
+						}
+					}),
+				)
+				if (localStorage.getItem('loginToken') !== token) {
+					publishPlayers(requestId, { ok: false, error: 'The skin site account changed.' })
+					return
+				}
+				publishPlayers(requestId, { ok: true, players: playersWithSkins })
 			} else {
 				publishPlayers(requestId, {
 					ok: false,
@@ -97,11 +250,79 @@
 		} catch {
 			publishPlayers(requestId, { ok: false, error: 'Unable to reach the player service.' })
 		} finally {
-			clearTimeout(timeout)
 			pendingPlayers.delete(requestId)
 		}
 	}
 
+	async function updatePlayerSkin(requestId, playerId, textureDataUrl, model) {
+		if (pendingSkinUpdates.has(requestId)) return
+		const player = knownPlayers.get(playerId)
+		if (!player || player.isMojang) {
+			publishSkinUpdate(requestId, {
+				ok: false,
+				error: 'This skin site player cannot be changed.',
+			})
+			return
+		}
+		let token
+		try {
+			token = localStorage.getItem('loginToken') || ''
+		} catch {
+			publishSkinUpdate(requestId, { ok: false, error: 'Unable to read the skin site session.' })
+			return
+		}
+		if (!token) {
+			publish('signed-out')
+			publishSkinUpdate(requestId, { ok: false, error: 'Sign in to the skin site first.' })
+			return
+		}
+
+		const controller = new AbortController()
+		pendingSkinUpdates.set(requestId, controller)
+		const timeout = setTimeout(() => controller.abort(), 18_000)
+		try {
+			const texture = pngDataUrlToBlob(textureDataUrl)
+			const form = new FormData()
+			form.append('file', texture, `${playerId}.png`)
+			form.append('model', model)
+			const response = await fetch(
+				`/starlight/skin/player/skin/${encodeURIComponent(playerId)}/SKIN`,
+				{
+					method: 'PUT',
+					headers: { Authorization: `Bearer ${token}` },
+					body: form,
+					signal: controller.signal,
+					cache: 'no-store',
+					redirect: 'error',
+				},
+			)
+			const body = await response.json().catch(() => null)
+			if (localStorage.getItem('loginToken') !== token) {
+				publishSkinUpdate(requestId, { ok: false, error: 'The skin site account changed.' })
+				return
+			}
+			if (response.status === 401 || response.status === 403) publish('signed-out')
+			if (response.ok && body?.success !== false) publishSkinUpdate(requestId, { ok: true })
+			else {
+				publishSkinUpdate(requestId, {
+					ok: false,
+					error:
+						typeof body?.errorMessage === 'string' && body.errorMessage
+							? body.errorMessage.slice(0, 300)
+							: 'The skin site rejected the skin update.',
+				})
+			}
+		} catch (error) {
+			publishSkinUpdate(requestId, {
+				ok: false,
+				error: error instanceof Error ? error.message : 'Unable to reach the skin service.',
+			})
+		} finally {
+			clearTimeout(timeout)
+			pendingSkinUpdates.delete(requestId)
+		}
+	}
+
 	async function requestLuck(requestId) {
 		if (pendingLuck.has(requestId)) return
 		let token
@@ -168,6 +389,7 @@
 		pending?.abort()
 		pending = undefined
 		lastToken = token
+		if (changed) knownPlayers = new Map()
 		lastCheck = Date.now()
 		if (!token) {
 			publish('signed-out')
@@ -231,6 +453,23 @@
 			/^skin-players-\d+-\d+$/.test(event.data.requestId)
 		) {
 			void requestPlayers(event.data.requestId)
+			return
+		}
+		if (
+			event.data?.type === 'starlight-skin-update-request' &&
+			parentOrigin === event.origin &&
+			typeof event.data.requestId === 'string' &&
+			/^skin-update-\d+-\d+$/.test(event.data.requestId) &&
+			typeof event.data.playerId === 'string' &&
+			/^[0-9a-f-]{32,36}$/i.test(event.data.playerId) &&
+			(event.data.model === 'default' || event.data.model === 'slim')
+		) {
+			void updatePlayerSkin(
+				event.data.requestId,
+				event.data.playerId,
+				event.data.textureDataUrl,
+				event.data.model,
+			)
 		}
 	})
 	// Storage events cover other tabs; polling also covers same-document SPA login/logout.
@@ -245,6 +484,8 @@
 		pendingLuck.clear()
 		for (const controller of pendingPlayers.values()) controller.abort()
 		pendingPlayers.clear()
+		for (const controller of pendingSkinUpdates.values()) controller.abort()
+		pendingSkinUpdates.clear()
 	})
 	window.addEventListener('pageshow', (event) => {
 		if (!event.persisted) return

apps/app/src/skin_site_bridge.test.cjs

@@ -4,11 +4,14 @@ const vm = require('node:vm')
 const test = require('node:test')
 const source = fs.readFileSync(require('node:path').join(__dirname, 'skin_site_bridge.js'), 'utf8')
 
-function harness(origin = 'https://skin.starlight.cool') {
+function harness(origin = 'https://skin.starlight.cool', skinSize = 64) {
 	let token = null
 	const listeners = {},
 		messages = [],
-		requests = []
+		requests = [],
+		drawCalls = []
+	const skinWidth = typeof skinSize === 'number' ? skinSize : skinSize.width
+	const skinHeight = typeof skinSize === 'number' ? skinSize : skinSize.height
 	let tick
 	let result = async () => ({
 		ok: true,
@@ -38,7 +41,34 @@ function harness(origin = 'https://skin.starlight.cool') {
 			return result(...args)
 		},
 		AbortController,
+		Blob,
 		Date,
+		FormData,
+		Uint8Array,
+		atob,
+			document: {
+				createElement() {
+					return {
+						getContext() {
+							return {
+								drawImage(...args) {
+									drawCalls.push(args)
+								},
+							}
+					},
+					toDataURL() {
+						return 'data:image/png;base64,SEVBRERBVEE='
+					},
+				}
+			},
+			},
+			Image: class {
+				naturalWidth = skinWidth
+				naturalHeight = skinHeight
+			set src(_value) {
+				queueMicrotask(() => this.onload?.())
+			}
+		},
 		setTimeout,
 		clearTimeout,
 		setInterval(callback) {
@@ -49,6 +79,7 @@ function harness(origin = 'https://skin.starlight.cool') {
 	}
 	vm.runInNewContext(source, context)
 	return {
+		drawCalls,
 		messages,
 		requests,
 		listeners,
@@ -71,6 +102,19 @@ function harness(origin = 'https://skin.starlight.cool') {
 			listeners.message?.({ source, origin, data })
 			await new Promise(setImmediate)
 		},
+		async waitForMessage(type, requestId, timeout = 2_000) {
+			const deadline = Date.now() + timeout
+			while (Date.now() < deadline) {
+				const message = messages.find(
+					(entry) =>
+						entry.data?.type === type &&
+						(requestId === undefined || entry.data?.requestId === requestId),
+				)
+				if (message) return message
+				await new Promise((resolve) => setTimeout(resolve, 10))
+			}
+			throw new Error(`Timed out waiting for ${type}`)
+		},
 	}
 }
 
@@ -186,25 +230,130 @@ test('player requests return a sanitized complete player collection without expo
 	const h = harness()
 	h.token('test-token')
 	await h.connect()
-	h.result(async () => ({
-		ok: true,
-		status: 200,
-		json: async () => ({
-			payload: [
-				{ uuid: '0123456789abcdef0123456789abcdef', name: 'PlayerOne', isMojang: false },
-				{ uuid: 'fedcba9876543210fedcba9876543210', name: 'Official', isMojang: true },
-				{ uuid: 'bad', name: 'Ignored', isMojang: false },
-			],
-		}),
-	}))
+	h.result(async (url) => {
+		if (url.startsWith('/starlight/skin/player/skin/')) {
+			return {
+				ok: true,
+				status: 200,
+				json: async () => ({
+					payload: {
+						skin: url.endsWith('0123456789abcdef0123456789abcdef')
+							? '/textures/player-one.png'
+							: null,
+					},
+				}),
+			}
+		}
+		return {
+			ok: true,
+			status: 200,
+			json: async () => ({
+				payload: [
+					{ uuid: '0123456789abcdef0123456789abcdef', name: 'PlayerOne', isMojang: false },
+					{ uuid: 'fedcba9876543210fedcba9876543210', name: 'Official', isMojang: true },
+					{ uuid: 'bad', name: 'Ignored', isMojang: false },
+				],
+			}),
+		}
+	})
 	await h.message({ type: 'starlight-skin-players-request', requestId: 'skin-players-1-1' })
-	const request = h.requests.at(-1)
+	await h.waitForMessage('starlight-skin-players-result', 'skin-players-1-1')
+	const request = h.requests.find(([url]) => url === '/starlight/skin/player')
 	assert.equal(request[0], '/starlight/skin/player')
 	assert.equal(request[1].headers.Authorization, 'Bearer test-token')
+	assert.equal(
+		h.requests.filter(([url]) => url.startsWith('/starlight/skin/player/skin/')).length,
+		2,
+	)
 	const message = h.messages.at(-1)
 	assert.equal(message.data.type, 'starlight-skin-players-result')
 	assert.equal(message.data.ok, true)
 	assert.equal(message.data.players.length, 2)
 	assert.equal(message.data.players[1].isMojang, true)
+	assert.equal(message.data.players[0].skinState, 'ready')
+	assert.equal(message.data.players[0].headDataUrl, 'data:image/png;base64,SEVBRERBVEE=')
+	assert.equal(message.data.players[0].skinDataUrl, 'data:image/png;base64,SEVBRERBVEE=')
+	assert.equal(message.data.players[0].model, 'default')
+	assert.equal(message.data.players[1].skinState, 'empty')
+	assert.equal(message.data.players[1].headDataUrl, undefined)
 	assert.ok(!JSON.stringify(h.messages).includes('test-token'))
 })
+
+test('skin updates upload a PNG to the selected skin-site player without exposing the token', async () => {
+	const h = harness()
+	h.token('test-token')
+	await h.connect()
+	h.result(async (url) => ({
+		ok: true,
+		status: 200,
+		json: async () => ({
+			payload:
+				url === '/starlight/skin/player'
+					? [
+							{
+								uuid: '0123456789abcdef0123456789abcdef',
+								name: 'PlayerOne',
+								isMojang: false,
+							},
+						]
+					: { skin: null },
+		}),
+	}))
+	await h.message({ type: 'starlight-skin-players-request', requestId: 'skin-players-2-1' })
+	h.result(async () => ({
+		ok: true,
+		status: 200,
+		json: async () => ({ success: true, payload: 'updated' }),
+	}))
+	await h.message({
+		type: 'starlight-skin-update-request',
+		requestId: 'skin-update-1-1',
+		playerId: '0123456789abcdef0123456789abcdef',
+		textureDataUrl: 'data:image/png;base64,SEVBRERBVEE=',
+		model: 'slim',
+	})
+
+	const request = h.requests.at(-1)
+	assert.equal(
+		request[0],
+		'/starlight/skin/player/skin/0123456789abcdef0123456789abcdef/SKIN',
+	)
+	assert.equal(request[1].method, 'PUT')
+	assert.equal(request[1].headers.Authorization, 'Bearer test-token')
+	assert.equal(request[1].body.get('model'), 'slim')
+	assert.equal(request[1].body.get('file').type, 'image/png')
+	assert.equal(h.messages.at(-1).data.type, 'starlight-skin-update-result')
+	assert.equal(h.messages.at(-1).data.ok, true)
+	assert.ok(!JSON.stringify(h.messages).includes('test-token'))
+})
+
+test('skin rendering uses the skin site crop and preserves the source texture dimensions', async () => {
+	const h = harness('https://skin.starlight.cool', { width: 64, height: 128 })
+	h.token('test-token')
+	await h.connect()
+	h.result(async (url) => ({
+		ok: true,
+		status: 200,
+		json: async () => ({
+			payload:
+				url === '/starlight/skin/player'
+					? [
+							{
+								uuid: '0123456789abcdef0123456789abcdef',
+								name: 'HighResolutionPlayer',
+								isMojang: false,
+							},
+						]
+					: { skin: '/textures/hd.png', model: 'slim' },
+		}),
+	}))
+	await h.message({ type: 'starlight-skin-players-request', requestId: 'skin-players-3-1' })
+
+	const player = h.messages.at(-1).data.players[0]
+	assert.equal(player.skinState, 'ready')
+	assert.equal(player.headDataUrl, 'data:image/png;base64,SEVBRERBVEE=')
+	assert.equal(player.skinDataUrl, 'data:image/png;base64,SEVBRERBVEE=')
+	assert.equal(player.model, 'slim')
+	assert.deepEqual(h.drawCalls[0].slice(1), [8, 8, 8, 8, 1, 1, 16, 16])
+	assert.deepEqual(h.drawCalls[1].slice(1), [40, 8, 8, 8, 0, 0, 18, 18])
+})