File poppler-CVE-2024-6239.patch of Package poppler.36856

From 0554731052d1a97745cb179ab0d45620589dd9c4 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Fri, 7 Jun 2024 00:54:55 +0200
Subject: [PATCH] pdfinfo: Fix crash in broken documents when using -dests

---
 utils/pdfinfo.cc | 35 +++++++++++++++--------------------
 1 file changed, 15 insertions(+), 20 deletions(-)

Index: poppler-22.01.0/utils/pdfinfo.cc
===================================================================
--- poppler-22.01.0.orig/utils/pdfinfo.cc
+++ poppler-22.01.0/utils/pdfinfo.cc
@@ -112,11 +112,11 @@ static const ArgDesc argDesc[] = { { "-f
                                    { "-?", argFlag, &printHelp, 0, "print usage information" },
                                    {} };
 
-static void printTextString(const GooString *s, const UnicodeMap *uMap)
+static void printStdTextString(const std::string &s, const UnicodeMap *uMap)
 {
     Unicode *u;
     char buf[8];
-    int len = TextStringToUCS4(s->toStr(), &u);
+    int len = TextStringToUCS4(s, &u);
     for (int i = 0; i < len; i++) {
         int n = uMap->mapUnicode(u[i], buf, sizeof(buf));
         fwrite(buf, 1, n, stdout);
@@ -124,6 +124,11 @@ static void printTextString(const GooStr
     gfree(u);
 }
 
+static void printTextString(const GooString *s, const UnicodeMap *uMap)
+{
+    printStdTextString(s->toStr(), uMap);
+}
+
 static void printUCS4String(const Unicode *u, int len, const UnicodeMap *uMap)
 {
     char buf[8];
@@ -293,11 +298,6 @@ static void printStruct(const StructElem
     }
 }
 
-struct GooStringCompare
-{
-    bool operator()(GooString *lhs, GooString *rhs) const { return lhs->cmp(const_cast<GooString *>(rhs)) < 0; }
-};
-
 static void printLinkDest(const std::unique_ptr<LinkDest> &dest)
 {
     GooString s;
@@ -368,29 +368,25 @@ static void printLinkDest(const std::uni
 
 static void printDestinations(PDFDoc *doc, const UnicodeMap *uMap)
 {
-    std::map<Ref, std::map<GooString *, std::unique_ptr<LinkDest>, GooStringCompare>> map;
+    std::map<Ref, std::map<std::string, std::unique_ptr<LinkDest>>> map;
 
     int numDests = doc->getCatalog()->numDestNameTree();
     for (int i = 0; i < numDests; i++) {
-        GooString *name = new GooString(doc->getCatalog()->getDestNameTreeName(i));
+        const GooString *name = doc->getCatalog()->getDestNameTreeName(i);
         std::unique_ptr<LinkDest> dest = doc->getCatalog()->getDestNameTreeDest(i);
-        if (dest && dest->isPageRef()) {
+        if (name && dest && dest->isPageRef()) {
             Ref pageRef = dest->getPageRef();
-            map[pageRef].insert(std::make_pair(name, std::move(dest)));
-        } else {
-            delete name;
+            map[pageRef].insert(std::make_pair(name->toStr(), std::move(dest)));
         }
     }
 
     numDests = doc->getCatalog()->numDests();
     for (int i = 0; i < numDests; i++) {
-        GooString *name = new GooString(doc->getCatalog()->getDestsName(i));
+        const char *name = doc->getCatalog()->getDestsName(i);
         std::unique_ptr<LinkDest> dest = doc->getCatalog()->getDestsDest(i);
-        if (dest && dest->isPageRef()) {
+        if (name && dest && dest->isPageRef()) {
             Ref pageRef = dest->getPageRef();
             map[pageRef].insert(std::make_pair(name, std::move(dest)));
-        } else {
-            delete name;
         }
     }
 
@@ -404,9 +400,8 @@ static void printDestinations(PDFDoc *do
                     printf("%4d ", i);
                     printLinkDest(it.second);
                     printf(" \"");
-                    printTextString(it.first, uMap);
+                    printStdTextString(it.first, uMap);
                     printf("\"\n");
-                    delete it.first;
                 }
             }
         }