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

CVE: CVE-2024-6239
Upstream-Status: Backport [https://gitlab.freedesktop.org/poppler/poppler/-/commit/0554731052d1a97745cb179ab0d45620589dd9c4]

Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
---
 utils/pdfinfo.cc | 35 +++++++++++++++--------------------
 1 file changed, 15 insertions(+), 20 deletions(-)

diff --git a/utils/pdfinfo.cc b/utils/pdfinfo.cc
index a446c3c..4b9166f 100644
--- a/utils/pdfinfo.cc
+++ b/utils/pdfinfo.cc
@@ -15,7 +15,7 @@
 // under GPL version 2 or later
 //
 // Copyright (C) 2006 Dom Lachowicz <cinamod@hotmail.com>
-// Copyright (C) 2007-2010, 2012, 2016-2022 Albert Astals Cid <aacid@kde.org>
+// Copyright (C) 2007-2010, 2012, 2016-2022, 2024 Albert Astals Cid <aacid@kde.org>
 // Copyright (C) 2010 Hib Eris <hib@hiberis.nl>
 // Copyright (C) 2011 Vittal Aithal <vittal.aithal@cognidox.com>
 // Copyright (C) 2012, 2013, 2016-2018, 2021 Adrian Johnson <ajohnson@redneon.com>
@@ -112,16 +112,21 @@ static const ArgDesc argDesc[] = { { "-f", argInt, &firstPage, 0, "first page to
                                    { "-?", 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)
 {
     char buf[8];
-    std::vector<Unicode> u = TextStringToUCS4(s->toStr());
+    const std::vector<Unicode> u = TextStringToUCS4(s);
     for (const auto &c : u) {
         int n = uMap->mapUnicode(c, buf, sizeof(buf));
         fwrite(buf, 1, n, stdout);
     }
 }
 
+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 StructElement *element, unsigned indent)
     }
 }
 
-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::unique_ptr<LinkDest> &dest)
 
 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 *doc, const UnicodeMap *uMap)
                     printf("%4d ", i);
                     printLinkDest(it.second);
                     printf(" \"");
-                    printTextString(it.first, uMap);
+                    printStdTextString(it.first, uMap);
                     printf("\"\n");
-                    delete it.first;
                 }
             }
         }
-- 
2.40.0

