docker: restore TITLE env handling in entrypoint (#787)

* docker: restore TITLE env handling in entrypoint

* docker: escape TITLE for HTML output

* test(e2e): cover TITLE with umlauts and quotes

---------

Co-authored-by: Stefan Stidl <sti-github@stidl.com>

Author: sstidl

docker/entrypoint.sh

@@ -17,6 +17,19 @@ is_alpine() {
   [ -f /etc/alpine-release ]
 }
 
+html_escape() {
+  printf '%s' "$1" | sed \
+    -e 's/&/\&/g' \
+    -e 's/</\&lt;/g' \
+    -e 's/>/\&gt;/g' \
+    -e 's/"/\&quot;/g' \
+    -e "s/'/\&#39;/g"
+}
+
+sed_escape() {
+  printf '%s\n' "$1" | sed 's/[&/\\]/\\&/g; s/\$/\\$/g'
+}
+
 # Cleanup
 rm -rf /var/www/html/*
 
@@ -84,6 +97,17 @@ if [[ "$MODE" == "frontend" || "$MODE" == "dual" ||  "$MODE" == "standalone" ]];
     sed -i "s/var SPEEDTEST_SERVERS = \"server-list.json\";/var SPEEDTEST_SERVERS = \"$SERVER_LIST_URL_ESCAPED\";/" /var/www/html/index-modern.html
     sed -i "s/var SPEEDTEST_SERVERS = \\[/var SPEEDTEST_SERVERS = \"$SERVER_LIST_URL_ESCAPED\";\\n\\t\\t\\/\\*/" /var/www/html/index-classic.html
   fi
+
+  # Replace title placeholders if TITLE is set
+  if [ ! -z "$TITLE" ]; then
+    TITLE_ONE_LINE=${TITLE//$'\r'/}
+    TITLE_ONE_LINE=${TITLE_ONE_LINE//$'\n'/ }
+    TITLE_HTML_ESCAPED=$(html_escape "$TITLE_ONE_LINE")
+    TITLE_ESCAPED=$(sed_escape "$TITLE_HTML_ESCAPED")
+    sed -i "s/<title>LibreSpeed<\\/title>/<title>$TITLE_ESCAPED<\\/title>/g; s/<h1>LibreSpeed<\\/h1>/<h1>$TITLE_ESCAPED<\\/h1>/g" /var/www/html/index-classic.html
+    sed -i "s/<title>LibreSpeed<\\/title>/<title>$TITLE_ESCAPED<\\/title>/g" /var/www/html/index.html
+    sed -i "s/<title>LibreSpeed - Free and Open Source Speedtest<\\/title>/<title>$TITLE_ESCAPED - Free and Open Source Speedtest<\\/title>/g" /var/www/html/index-modern.html
+  fi
 
   # Support legacy EMAIL env var as fallback for GDPR_EMAIL
   if [ -z "$GDPR_EMAIL" ] && [ ! -z "$EMAIL" ]; then

tests/docker-compose-playwright.yml

@@ -26,6 +26,7 @@ services:
       - MODE=standalone
       - WEBPORT=8080
       - USE_NEW_DESIGN=true
+      - 'TITLE=Grüße "Tempo" ''Österreich'''
     ports:
       - "18185:8080"
 

tests/e2e/title-special-chars.spec.js

@@ -0,0 +1,16 @@
+const { test, expect } = require('@playwright/test');
+const { baseUrls } = require('./helpers/env');
+
+const specialTitle = 'Grüße "Tempo" \'Österreich\'';
+
+test.describe('TITLE special characters', () => {
+  test('modern page title supports umlauts and quotes', async ({ page }) => {
+    await page.goto(`${baseUrls.standaloneNew}/index-modern.html`);
+    await expect(page).toHaveTitle(`${specialTitle} - Free and Open Source Speedtest`);
+  });
+
+  test('classic heading supports umlauts and quotes', async ({ page }) => {
+    await page.goto(`${baseUrls.standaloneNew}/index-classic.html`);
+    await expect(page.locator('h1').first()).toHaveText(specialTitle);
+  });
+});