Fix UTF-16-safe voice media log truncation

Alix-007 · Alix-007 · commit 37d54a9772fa · 2026-07-07T11:04:19.000+08:00
diff --git a/extensions/voice-call/src/media-stream.test.ts b/extensions/voice-call/src/media-stream.test.ts
@@ -444,6 +444,13 @@ describe("MediaStreamHandler security hardening", () => {
     expect(reason).toContain("forged line entry");
   });
 
+  it("truncates websocket close reason without splitting UTF-16 surrogate pairs", () => {
+    const reason = sanitizeLogText(`abc\uD83D\uDE80tail`, 4);
+    expect(reason).toBe("abc...");
+    expect(reason).not.toContain("\uD83D");
+    expect(reason).not.toContain("\uDE80");
+  });
+
   it("closes idle pre-start connections after timeout", async () => {
     const shouldAcceptStreamCalls: Array<{ callId: string; streamSid: string; token?: string }> =
       [];
diff --git a/extensions/voice-call/src/media-stream.ts b/extensions/voice-call/src/media-stream.ts
@@ -23,6 +23,7 @@ import {
   type TalkEventInput,
   type TalkSessionController,
 } from "openclaw/plugin-sdk/realtime-voice";
+import { truncateUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";
 import { type RawData, WebSocket, WebSocketServer } from "ws";
 
 /**
@@ -109,7 +110,7 @@ export function sanitizeLogText(value: string, maxChars: number): string {
   if (sanitized.length <= maxChars) {
     return sanitized;
   }
-  return `${sanitized.slice(0, maxChars)}...`;
+  return `${truncateUtf16Safe(sanitized, maxChars)}...`;
 }
 
 function normalizeWsMessageData(data: RawData): Buffer {

Original file line number	Diff line number	Diff line change
`@@ -23,6 +23,7 @@ import {`
`23`	`23`	`type TalkEventInput,`
`24`	`24`	`type TalkSessionController,`
`25`	`25`	`} from "openclaw/plugin-sdk/realtime-voice";`
	`26`	`+import { truncateUtf16Safe } from "openclaw/plugin-sdk/text-utility-runtime";`
`26`	`27`	`import { type RawData, WebSocket, WebSocketServer } from "ws";`
`27`	`28`
`28`	`29`	`/**`
`@@ -109,7 +110,7 @@ export function sanitizeLogText(value: string, maxChars: number): string {`
`109`	`110`	`if (sanitized.length <= maxChars) {`
`110`	`111`	`return sanitized;`
`111`	`112`	`}`
`112`		- return `${sanitized.slice(0, maxChars)}...`;
	`113`	+ return `${truncateUtf16Safe(sanitized, maxChars)}...`;
`113`	`114`	`}`
`114`	`115`
`115`	`116`	`function normalizeWsMessageData(data: RawData): Buffer {`