feat: Add AdminPanel API endpoints for adding and deleting custom fonts.

AdminPanel/server/package.json

@@ -12,17 +12,18 @@
     "start": "cd .. && npm --prefix client run build && set \"NODE_CONFIG_DIR=../Common/config\" && set \"NODE_ENV=development-windows\" && node server/sources/server.js"
   },
   "dependencies": {
+    "ajv": "^8.17.1",
+    "ajv-errors": "^3.0.0",
+    "ajv-formats": "^2.1.1",
     "apicache": "^1.6.3",
     "config": "^3.3.11",
     "cookie-parser": "^1.4.6",
     "cors": "^2.8.5",
     "express": "^4.19.2",
-    "ajv": "^8.17.1",
-    "ajv-formats": "^2.1.1",
-    "ajv-errors": "^3.0.0",
     "joi": "^17.13.3",
     "jsonwebtoken": "^9.0.2",
-    "ms": "^2.1.3"
+    "ms": "^2.1.3",
+    "multer": "2.2.0"
   },
   "pkg": {
     "scripts": [

AdminPanel/server/sources/routes/fonts/fontParser.worker.js

@@ -0,0 +1,50 @@
+'use strict';
+const {parentPort, workerData} = require('worker_threads');
+const fontkit = require('fontkit');
+
+// Fonts that are technically well-formed but structurally excessive are rejected here.
+// sfnt numGlyphs/numTables are 16-bit fields; no legitimate font needs anywhere near these.
+const maxTables = 64;
+const maxGlyphs = 65536;
+const maxCollectionFonts = 16;
+const maxNameFieldLength = 256;
+
+function truncateField(value) {
+  return 'string' === typeof value && value.length > maxNameFieldLength ? value.slice(0, maxNameFieldLength) : value;
+}
+
+function describeAndValidate(font) {
+  const numTables = font.directory ? font.directory.numTables : 0;
+  if (numTables > maxTables) {
+    throw new Error(`font declares too many tables (${numTables} > ${maxTables})`);
+  }
+  const numGlyphs = font.numGlyphs || 0;
+  if (numGlyphs > maxGlyphs) {
+    throw new Error(`font declares too many glyphs (${numGlyphs} > ${maxGlyphs})`);
+  }
+  return {
+    family: truncateField(font.familyName),
+    subfamily: truncateField(font.subfamilyName),
+    fullName: truncateField(font.fullName),
+    postscriptName: truncateField(font.postscriptName)
+  };
+}
+
+function openFont() {
+  const {mode, filePath, buffer} = workerData;
+  const font = 'path' === mode ? fontkit.openSync(filePath) : fontkit.create(Buffer.from(buffer));
+  if (Array.isArray(font.fonts)) {
+    // TrueType/OpenType collection (.ttc): validate every embedded font, describe the first
+    if (font.fonts.length > maxCollectionFonts) {
+      throw new Error(`font collection has too many fonts (${font.fonts.length} > ${maxCollectionFonts})`);
+    }
+    return font.fonts.map(describeAndValidate)[0];
+  }
+  return describeAndValidate(font);
+}
+
+try {
+  parentPort.postMessage({ok: true, result: openFont()});
+} catch (err) {
+  parentPort.postMessage({ok: false, error: err.message});
+}