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From 4631115647c1e4f0482ffe0491c2f38d2231337b Mon Sep 17 00:00:00 2001
From: crt <chluo@cse.cuhk.edu.hk>
Date: Fri, 29 Jul 2022 20:51:11 +0000
Subject: [PATCH] Check isDict before calling getDict
Issue #1276
---
utils/pdfunite.cc | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/utils/pdfunite.cc b/utils/pdfunite.cc
index a8116e3..9735096 100644
--- a/utils/pdfunite.cc
+++ b/utils/pdfunite.cc
@@ -210,6 +210,14 @@ int main (int argc, char *argv[])
Object ocObj;
if (docs.size() >= 1) {
Object catObj = docs[0]->getXRef()->getCatalog();
+ if(!catObj.isDict()){
+ fclose(f);
+ delete yRef;
+ delete countRef;
+ delete outStr;
+ error(errSyntaxError, -1, "XRef's Catalog is not a dictionary.");
+ return -1;
+ }
Dict *catDict = catObj.getDict();
intents = catDict->lookup("OutputIntents");
afObj = catDict->lookupNF("AcroForm").copy();
@@ -310,6 +318,14 @@ int main (int argc, char *argv[])
}
}
Object pageCatObj = docs[i]->getXRef()->getCatalog();
+ if(!pageCatObj.isDict()){
+ fclose(f);
+ delete yRef;
+ delete countRef;
+ delete outStr;
+ error(errSyntaxError, -1, "XRef's Catalog is not a dictionary.");
+ return -1;
+ }
Dict *pageCatDict = pageCatObj.getDict();
Object pageNames = pageCatDict->lookup("Names");
if (!pageNames.isNull() && pageNames.isDict()) {
--
2.33.0
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