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Ensure that |get fingerprint| doesn't fail if the ID is not an array (issue 5599)

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According to the [PDF specification](http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PDF32000_2008.pdf#page=51) the `ID` should be an array. To prevent errors if the PDF file violates that part of the spec, check that the `ID` is actually an array.

Fixes 5599.
This commit is contained in:
Jonas Jenwald 2014-12-30 15:43:04 +01:00
parent 6e66e30d92
commit 1fea44ce14
4 changed files with 91 additions and 5 deletions
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12
src/core/core.js
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@ -281,9 +281,9 @@ var Page = (function PageClosure() {
*/
var PDFDocument = (function PDFDocumentClosure() {
var FINGERPRINT_FIRST_BYTES = 1024;
var EMPTY_FINGERPRINT = '\x00\x00\x00\x00\x00\x00\x00' +
'\x00\x00\x00\x00\x00\x00\x00\x00\x00';
function PDFDocument(pdfManager, arg, password) {
if (isStream(arg)) {
init.call(this, pdfManager, arg, password);
@ -495,11 +495,13 @@ var PDFDocument = (function PDFDocumentClosure() {
return shadow(this, 'documentInfo', docInfo);
},
get fingerprint() {
var xref = this.xref, hash, fileID = '';
var xref = this.xref, idArray, hash, fileID = '';
if (xref.trailer.has('ID') &&
xref.trailer.get('ID')[0] !== EMPTY_FINGERPRINT) {
hash = stringToBytes(xref.trailer.get('ID')[0]);
if (xref.trailer.has('ID')) {
idArray = xref.trailer.get('ID');
}
if (idArray && isArray(idArray) && idArray[0] !== EMPTY_FINGERPRINT) {
hash = stringToBytes(idArray[0]);
} else {
if (this.stream.ensureRange) {
this.stream.ensureRange(0,