fix: E-sign is not available in completed document

2026-09-06 17:57:39 +02:00 · 2024-03-11 17:35:20 +05:30
parent 73c219fa4d
commit 51505af6d8
6 changed files with 200 additions and 83 deletions
@@ -1 +1,20 @@
-const ERROR_TYPE_UNKNOWN=1,ERROR_TYPE_INPUT=2,ERROR_TYPE_PARSE=3,ERROR_VERIFY_SIGNATURE=4;class SignPdfError extends Error{constructor(R,E=ERROR_TYPE_UNKNOWN){super(R),this.type=E}}SignPdfError.TYPE_UNKNOWN=ERROR_TYPE_UNKNOWN,SignPdfError.TYPE_INPUT=ERROR_TYPE_INPUT,SignPdfError.TYPE_PARSE=ERROR_TYPE_PARSE,SignPdfError.VERIFY_SIGNATURE=ERROR_VERIFY_SIGNATURE;export default SignPdfError;export{ERROR_TYPE_UNKNOWN,ERROR_TYPE_INPUT,ERROR_TYPE_PARSE,ERROR_VERIFY_SIGNATURE};
+const ERROR_TYPE_UNKNOWN = 1,
+  ERROR_TYPE_INPUT = 2,
+  ERROR_TYPE_PARSE = 3,
+  ERROR_VERIFY_SIGNATURE = 4;
+class SignPdfError extends Error {
+  constructor(R, E = ERROR_TYPE_UNKNOWN) {
+    super(R), (this.type = E);
+  }
+}
+(SignPdfError.TYPE_UNKNOWN = ERROR_TYPE_UNKNOWN),
+  (SignPdfError.TYPE_INPUT = ERROR_TYPE_INPUT),
+  (SignPdfError.TYPE_PARSE = ERROR_TYPE_PARSE),
+  (SignPdfError.VERIFY_SIGNATURE = ERROR_VERIFY_SIGNATURE);
+export {
+  ERROR_TYPE_UNKNOWN,
+  ERROR_TYPE_INPUT,
+  ERROR_TYPE_PARSE,
+  ERROR_VERIFY_SIGNATURE,
+  SignPdfError,
+};
@@ -0,0 +1,87 @@
+import {
+  DEFAULT_BYTE_RANGE_PLACEHOLDER,
+  DEFAULT_SIGNATURE_LENGTH,
+  SUBFILTER_ADOBE_PKCS7_DETACHED,
+} from './const.min.js';
+import { SignPdfError } from './SignPdfError.min.js';
+import {
+  PDFArray,
+  PDFDict,
+  PDFHexString,
+  PDFName,
+  PDFNumber,
+  PDFInvalidObject,
+  PDFString,
+} from 'pdf-lib';
+const pdflibAddPlaceholder = ({
+  pdfDoc: e = void 0,
+  pdfPage: o = void 0,
+  reason: t,
+  contactInfo: r = 'emailfromp1289@gmail.com',
+  name: i = 'Name from p12',
+  location: n,
+  signingTime: a = void 0,
+  signatureLength: P = DEFAULT_SIGNATURE_LENGTH,
+  byteRangePlaceholder: F = DEFAULT_BYTE_RANGE_PLACEHOLDER,
+  subFilter: D = SUBFILTER_ADOBE_PKCS7_DETACHED,
+  widgetRect: f = [0, 0, 0, 0],
+  appName: g = void 0,
+}) => {
+  if (void 0 === e && void 0 === o)
+    throw new SignPdfError('PDFDoc or PDFPage must be set.', SignPdfError.TYPE_INPUT);
+  var e = e ?? o.doc,
+    o = o ?? e.getPages()[0],
+    m = PDFArray.withContext(e.context),
+    F =
+      (m.push(PDFNumber.of(0)),
+      m.push(PDFName.of(F)),
+      m.push(PDFName.of(F)),
+      m.push(PDFName.of(F)),
+      PDFHexString.of(String.fromCharCode(0).repeat(P))),
+    P = g ? { App: { Name: g } } : {},
+    g = e.context.obj({
+      Type: 'Sig',
+      Filter: 'Adobe.PPKLite',
+      SubFilter: D,
+      ByteRange: m,
+      Contents: F,
+      Reason: PDFString.of(t),
+      M: PDFString.fromDate(a ?? new Date()),
+      ContactInfo: PDFString.of(r),
+      Name: PDFString.of(i),
+      Location: PDFString.of(n),
+      Prop_Build: { Filter: { Name: 'Adobe.PPKLite' }, ...P },
+    }),
+    D = new Uint8Array(g.sizeInBytes()),
+    m = (g.copyBytesInto(D, 0), PDFInvalidObject.of(D)),
+    F = e.context.register(m);
+  const s = PDFArray.withContext(e.context);
+  f.forEach(e => s.push(PDFNumber.of(e)));
+  (t = e.context.formXObject([], { BBox: f, Resources: {} })),
+    (a = e.context.obj({
+      Type: 'Annot',
+      Subtype: 'Widget',
+      FT: 'Sig',
+      Rect: s,
+      V: F,
+      T: PDFString.of('Signature1'),
+      F: 4,
+      P: o.ref,
+      AP: { N: e.context.register(t) },
+    })),
+    (r = e.context.register(a));
+  let c = o.node.lookupMaybe(PDFName.of('Annots'), PDFArray),
+    d =
+      ((c = void 0 === c ? e.context.obj([]) : c).push(r),
+      o.node.set(PDFName.of('Annots'), c),
+      e.catalog.lookupMaybe(PDFName.of('AcroForm'), PDFDict));
+  void 0 === d &&
+    ((d = e.context.obj({ Fields: [] })),
+    (i = e.context.register(d)),
+    e.catalog.set(PDFName.of('AcroForm'), i));
+  let N;
+  N = d.has(PDFName.of('SigFlags')) ? d.get(PDFName.of('SigFlags')) : PDFNumber.of(0);
+  n = PDFNumber.of(3 | N.asNumber());
+  d.set(PDFName.of('SigFlags'), n), d.get(PDFName.of('Fields')).push(r);
+};
+export { pdflibAddPlaceholder };