wechat-tracker.js
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/**
* wechat-tracker.js — 实时跟踪微信收发消息
*
* 通过 adb shell su -c 读取 LSPosed/Vector 日志，解析 HermesWX 标签的日志行。
* 支持：轮询模式（默认）和流式监听模式。
*/
const { spawn } = require('child_process');
const path = require('path');
const EventEmitter = require('events');
const ADB = process.env.ADB_PATH || (() => {
try {
const projectAdb = path.resolve(__dirname, '../../../../platform-tools/adb');
require('fs').accessSync(projectAdb, require('fs').constants.X_OK);
return projectAdb;
} catch {
return 'adb';
}
})();
const LOG_PATTERN = /\[HermesWX\].*?MSG\s+(SEND|RECV)\s+talker=([^\s]+)\s+type=(\d+)\s+msgId=(\d+)\s+content=(.+)/;
const SEND_RESULT_PATTERN = /\[HermesWX\].*?Send result:\s+(true|false)/;
const BROADCAST_PATTERN = /\[HermesWX\].*?Broadcast received:\s+to=(.+)/;
class WechatTracker extends EventEmitter {
constructor() {
super();
this.polling = false;
this.lastLogTime = null;
this.streamProc = null;
}
/**
* 一次性拉取最近 N 条消息记录
* @param {number} n — 最近几条，默认 50
* @returns {Promise<Array<Message>>}
*/
async fetchRecent(n = 50) {
const cmd = `/debug_ramdisk/su -c "cat /data/adb/lspd/log/verbose_*.log 2>/dev/null | grep 'HermesWX' | tail -${n}"`;
try {
const out = await adbShell(cmd, 10000);
return this._parseLines(out);
} catch (e) {
return [];
}
}
/**
* 开始轮询监听（轻量级，不需要持续 adb 连接）
* @param {number} intervalMs — 轮询间隔，默认 3000ms
*/
startPolling(intervalMs = 3000) {
if (this.polling) return;
this.polling = true;
const tick = async () => {
if (!this.polling) return;
try {
const msgs = await this.fetchRecent(20);
for (const msg of msgs) {
if (this.lastLogTime && msg.timestamp <= this.lastLogTime) continue;
this.emit('message', msg);
this.lastLogTime = msg.timestamp;
}
} catch (e) {
this.emit('error', e);
}
setTimeout(tick, intervalMs);
};
tick();
}
stopPolling() {
this.polling = false;
}
/**
* 开始流式监听（通过 adb shell 持续 tail -f 日志，更实时但占用 adb 连接）
*/
startStream() {
if (this.streamProc) return;
const cmd = `shell "/debug_ramdisk/su" "-c" "tail -f /data/adb/lspd/log/verbose_*.log"`;
const args = cmd.split(' ');
this.streamProc = spawn(ADB, args);
const rl = require('readline').createInterface({ input: this.streamProc.stdout });
rl.on('line', line => {
const msgs = this._parseLines(line);
for (const msg of msgs) {
this.emit('message', msg);
}
const sendResult = this._parseSendResult(line);
if (sendResult) this.emit('sendResult', sendResult);
const broadcast = this._parseBroadcast(line);
if (broadcast) this.emit('sendRequest', broadcast);
});
this.streamProc.stderr.on('data', d => {
const err = d.toString().trim();
if (err) this.emit('error', new Error(err));
});
this.streamProc.on('close', () => {
this.streamProc = null;
this.emit('close');
});
}
stopStream() {
if (this.streamProc) {
this.streamProc.kill();
this.streamProc = null;
}
}
/**
* 解析单行或多行日志
*/
_parseLines(text) {
const messages = [];
if (!text) return messages;
for (const line of text.split('\n')) {
const m = line.match(LOG_PATTERN);
if (m) {
messages.push({
type: m[1].toLowerCase(), // 'send' | 'recv'
talker: m[2],
msgType: parseInt(m[3], 10),
msgId: parseInt(m[4], 10),
content: m[5],
raw: line.trim(),
timestamp: Date.now(),
});
}
}
return messages;
}
_parseSendResult(line) {
const m = line.match(SEND_RESULT_PATTERN);
if (m) return { success: m[1] === 'true', raw: line.trim() };
return null;
}
_parseBroadcast(line) {
const m = line.match(BROADCAST_PATTERN);
if (m) return { toUser: m[1], raw: line.trim() };
return null;
}
}
function adbShell(cmd, timeoutMs = 15000) {
return new Promise((resolve, reject) => {
const args = cmd.startsWith('shell ') ? cmd.split(' ') : ['shell', ...cmd.split(' ')];
const proc = spawn(ADB, args, { timeout: timeoutMs });
let stdout = '';
let stderr = '';
proc.stdout.on('data', d => stdout += d.toString());
proc.stderr.on('data', d => stderr += d.toString());
proc.on('close', code => {
if (code !== 0) {
reject(new Error(`adb exit ${code}: ${stderr.trim() || stdout.trim()}`));
} else {
resolve(stdout.trim());
}
});
proc.on('error', reject);
});
}
module.exports = { WechatTracker, adbShell };