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Merge pull request #7750 from Snuffleupagus/PDFLinkService_navigateTo-more-validation

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Add more validation to `PDFLinkService_navigateTo`
This commit is contained in:
Tim van der Meij 2016-10-27 22:16:35 +02:00 committed by GitHub
commit abc417cee9
3 changed files with 36 additions and 16 deletions
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2
src/display/annotation_layer.js
View File

@ -299,7 +299,7 @@ var LinkAnnotationElement = (function LinkAnnotationElementClosure() {
if (this.data.action) {
this._bindNamedAction(link, this.data.action);
} else {
this._bindLink(link, (this.data.dest || null));
this._bindLink(link, this.data.dest);
}
}

39
web/pdf_link_service.js
View File

@ -106,13 +106,21 @@ var PDFLinkService = (function PDFLinkServiceClosure() {
var goToDestination = function(destRef) {
// dest array looks like that: <page-ref> </XYZ|/FitXXX> <args..>
var pageNumber = destRef instanceof Object ?
self._pagesRefCache[destRef.num + ' ' + destRef.gen + ' R'] :
(destRef + 1);
var pageNumber;
if (destRef instanceof Object) {
pageNumber = self._cachedPageNumber(destRef);
} else if ((destRef | 0) === destRef) { // Integer
pageNumber = destRef + 1;
} else {
console.error('PDFLinkService_navigateTo: "' + destRef +
'" is not a valid destination reference.');
return;
}
if (pageNumber) {
if (pageNumber > self.pagesCount) {
console.error('PDFLinkService_navigateTo: ' +
'Trying to navigate to a non-existent page.');
if (pageNumber < 1 || pageNumber > self.pagesCount) {
console.error('PDFLinkService_navigateTo: "' + pageNumber +
'" is a non-existent page number.');
return;
}
self.pdfViewer.scrollPageIntoView({
@ -130,10 +138,12 @@ var PDFLinkService = (function PDFLinkServiceClosure() {
}
} else {
self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
var pageNum = pageIndex + 1;
var cacheKey = destRef.num + ' ' + destRef.gen + ' R';
self._pagesRefCache[cacheKey] = pageNum;
self.cachePageRef(pageIndex + 1, destRef);
goToDestination(destRef);
}).catch(function () {
console.error('PDFLinkService_navigateTo: "' + destRef +
'" is not a valid page reference.');
return;
});
}
};
@ -148,7 +158,9 @@ var PDFLinkService = (function PDFLinkServiceClosure() {
destinationPromise.then(function(destination) {
dest = destination;
if (!(destination instanceof Array)) {
return; // invalid destination
console.error('PDFLinkService_navigateTo: "' + destination +
'" is not a valid destination array.');
return;
}
goToDestination(destination[0]);
});
@ -339,7 +351,12 @@ var PDFLinkService = (function PDFLinkServiceClosure() {
cachePageRef: function PDFLinkService_cachePageRef(pageNum, pageRef) {
var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
this._pagesRefCache[refStr] = pageNum;
}
},
_cachedPageNumber: function PDFLinkService_cachedPageNumber(pageRef) {
var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
return (this._pagesRefCache && this._pagesRefCache[refStr]) || null;
},
};
function isValidExplicitDestination(dest) {

11
web/pdf_outline_viewer.js
View File

@ -90,10 +90,13 @@ var PDFOutlineViewer = (function PDFOutlineViewerClosure() {
});
return;
}
var linkService = this.linkService;
element.href = linkService.getDestinationHash(item.dest);
element.onclick = function goToDestination(e) {
linkService.navigateTo(item.dest);
var self = this, destination = item.dest;
element.href = self.linkService.getDestinationHash(destination);
element.onclick = function () {
if (destination) {
self.linkService.navigateTo(destination);
}
return false;
};
},