Release Office Tools 0.2.0

tests/office/formats.test.ts

@@ -7,11 +7,15 @@ import {
   familyForFormat,
   formatBytes,
   formatLabel,
+  validateOfficePackagePrefix,
 } from "../../src/office/formats";
 
 describe("office format handling", () => {
   it.each([
     ["REPORT.DOCX", "docx"],
+    ["REPORT.DOCM", "docx"],
+    ["template.xltx", "xlsx"],
+    ["show.ppsm", "pptx"],
     ["notes.odt", "odt"],
     ["budget.xlsx", "xlsx"],
     ["budget.ODS", "ods"],
@@ -21,6 +25,24 @@ describe("office format handling", () => {
     expect(detectOfficeFormat({ name, size: 42 })).toBe(expected);
   });
 
+  it("rejects renamed compound-binary, RTF and non-package signatures", () => {
+    expect(() =>
+      validateOfficePackagePrefix(
+        Uint8Array.from([0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1]),
+        "docx",
+      ),
+    ).toThrow(/OLE Compound File/u);
+    expect(() =>
+      validateOfficePackagePrefix(new TextEncoder().encode("{\\rtf1"), "docx"),
+    ).toThrow(/Rich Text Format/u);
+    expect(() =>
+      validateOfficePackagePrefix(new TextEncoder().encode("not zip!"), "xlsx"),
+    ).toThrow(/ZIP-based/u);
+    expect(() =>
+      validateOfficePackagePrefix(Uint8Array.from([0x50, 0x4b, 3, 4]), "pptx"),
+    ).not.toThrow();
+  });
+
   it("rejects empty, oversized, unsupported and legacy inputs explicitly", () => {
     const cases = [
       [{ name: "empty.docx", size: 0 }, "empty-file"],