From e6cd47ba5233dce8af2aacde02ca1533a25493be Mon Sep 17 00:00:00 2001
From: Tom Smeding <t.j.smeding@uu.nl>
Date: Thu, 31 Jul 2025 13:30:11 +0200
Subject: up_log: Expose log data via webpage

---
 modules/up_log/up_log.js | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

(limited to 'modules/up_log/up_log.js')

diff --git a/modules/up_log/up_log.js b/modules/up_log/up_log.js
index 609d705..61d2af0 100644
--- a/modules/up_log/up_log.js
+++ b/modules/up_log/up_log.js
@@ -4,7 +4,7 @@ const bodyParser = require("body-parser");
 
 let moddir = null;
 
-module.exports=function(app,io,_moddir){
+module.exports = function(app, io, _moddir) {
   moddir = _moddir;
 
   let config, accounts;
@@ -15,7 +15,7 @@ module.exports=function(app,io,_moddir){
     return false;
   }
 
-  app.post("/up_log/log", bodyParser.json(), cmn.authgen(accounts), (req,res) => {
+  app.post("/up_log/log", bodyParser.json(), cmn.authgen(accounts), (req, res) => {
     if (typeof req.body.machine != "string") {
       return res.sendStatus(400);
     }
@@ -26,4 +26,27 @@ module.exports=function(app,io,_moddir){
 
     res.status(200).end();
   });
+
+  app.get("/up_log/log/:count", cmn.authgen(), (req, res) => {
+    const reqln = +req.params.count;
+    if (reqln < 0 || reqln % 1 != 0 || isNaN(reqln)) { res.sendStatus(400); return; }
+
+    fs.readFile(moddir + "/log.txt", (err, data) => {
+      if (err) { res.sendStatus(500); return; }
+
+      let i = data.length - 1 - (data[data.length-1] == 10);
+      let nln = 0;
+      while (true) {
+        if (data[i] == 10) { nln++; if (nln >= reqln) { i++; break; } }
+        i--;
+        if (i <= 0) { nln++; break; }
+      }
+
+      res.send(data.slice(i));
+    });
+  });
+
+  app.get("/up_log", cmn.authgen(), (req, res) => {
+    res.sendFile(moddir + "/index.html");
+  });
 };
-- 
cgit v1.2.3-70-g09d2