From 566c125d6eee3bd907404523d94e1e0b5e403a46 Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Wed, 11 Dec 2019 14:14:01 +0100
Subject: Serve audit logs to client

---
 server/controllers/api/server/logs.ts | 57 +++++++++++++++++++++++++++++++----
 1 file changed, 51 insertions(+), 6 deletions(-)

(limited to 'server/controllers')

diff --git a/server/controllers/api/server/logs.ts b/server/controllers/api/server/logs.ts
index e9d1f2efd..a0ca21cd5 100644
--- a/server/controllers/api/server/logs.ts
+++ b/server/controllers/api/server/logs.ts
@@ -3,11 +3,12 @@ import { UserRight } from '../../../../shared/models/users'
 import { asyncMiddleware, authenticate, ensureUserHasRight } from '../../../middlewares'
 import { mtimeSortFilesDesc } from '../../../../shared/core-utils/logs/logs'
 import { readdir, readFile } from 'fs-extra'
-import { MAX_LOGS_OUTPUT_CHARACTERS } from '../../../initializers/constants'
+import { AUDIT_LOG_FILENAME, MAX_LOGS_OUTPUT_CHARACTERS, LOG_FILENAME } from '../../../initializers/constants'
 import { join } from 'path'
-import { getLogsValidator } from '../../../middlewares/validators/logs'
+import { getAuditLogsValidator, getLogsValidator } from '../../../middlewares/validators/logs'
 import { LogLevel } from '../../../../shared/models/server/log-level.type'
 import { CONFIG } from '../../../initializers/config'
+import { logger } from '@server/helpers/logger'
 
 const logsRouter = express.Router()
 
@@ -18,6 +19,13 @@ logsRouter.get('/logs',
   asyncMiddleware(getLogs)
 )
 
+logsRouter.get('/audit-logs',
+  authenticate,
+  ensureUserHasRight(UserRight.MANAGE_LOGS),
+  getAuditLogsValidator,
+  asyncMiddleware(getAuditLogs)
+)
+
 // ---------------------------------------------------------------------------
 
 export {
@@ -26,18 +34,50 @@ export {
 
 // ---------------------------------------------------------------------------
 
+const auditLogNameFilter = generateLogNameFilter(AUDIT_LOG_FILENAME)
+async function getAuditLogs (req: express.Request, res: express.Response) {
+  const output = await generateOutput({
+    startDateQuery: req.query.startDate,
+    endDateQuery: req.query.endDate,
+    level: 'audit',
+    nameFilter: auditLogNameFilter
+  })
+
+  return res.json(output).end()
+}
+
+const logNameFilter = generateLogNameFilter(LOG_FILENAME)
 async function getLogs (req: express.Request, res: express.Response) {
+  const output = await generateOutput({
+    startDateQuery: req.query.startDate,
+    endDateQuery: req.query.endDate,
+    level: req.query.level || 'info',
+    nameFilter: logNameFilter
+  })
+
+  return res.json(output).end()
+}
+
+async function generateOutput (options: {
+  startDateQuery: string,
+  endDateQuery?: string,
+  level: LogLevel,
+  nameFilter: RegExp
+}) {
+  const { startDateQuery, level, nameFilter } = options
+
   const logFiles = await readdir(CONFIG.STORAGE.LOG_DIR)
   const sortedLogFiles = await mtimeSortFilesDesc(logFiles, CONFIG.STORAGE.LOG_DIR)
   let currentSize = 0
 
-  const startDate = new Date(req.query.startDate)
-  const endDate = req.query.endDate ? new Date(req.query.endDate) : new Date()
-  const level: LogLevel = req.query.level || 'info'
+  const startDate = new Date(startDateQuery)
+  const endDate = options.endDateQuery ? new Date(options.endDateQuery) : new Date()
 
   let output: string[] = []
 
   for (const meta of sortedLogFiles) {
+    if (nameFilter.exec(meta.file) === null) continue
+
     const path = join(CONFIG.STORAGE.LOG_DIR, meta.file)
 
     const result = await getOutputFromFile(path, startDate, endDate, level, currentSize)
@@ -49,7 +89,7 @@ async function getLogs (req: express.Request, res: express.Response) {
     if (currentSize > MAX_LOGS_OUTPUT_CHARACTERS || (result.logTime && result.logTime < startDate.getTime())) break
   }
 
-  return res.json(output).end()
+  return output
 }
 
 async function getOutputFromFile (path: string, startDate: Date, endDate: Date, level: LogLevel, currentSize: number) {
@@ -58,6 +98,7 @@ async function getOutputFromFile (path: string, startDate: Date, endDate: Date,
   let logTime: number
 
   const logsLevel: { [ id in LogLevel ]: number } = {
+    audit: -1,
     debug: 0,
     info: 1,
     warn: 2,
@@ -93,3 +134,7 @@ async function getOutputFromFile (path: string, startDate: Date, endDate: Date,
 
   return { currentSize, output: output.reverse(), logTime }
 }
+
+function generateLogNameFilter (baseName: string) {
+  return new RegExp('^' + baseName.replace(/\.log$/, '') + '\d*.log$')
+}
-- 
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