From 356b582cec5be67cbf60ad64a1b2a7cab689dd77 Mon Sep 17 00:00:00 2001
From: m-holger <m-holger@kubitscheck.org>
Date: Wed, 10 Aug 2022 13:16:06 +0100
Subject: Remove QPDFObjectHandle::newIndirect

Modify QPDFParser::parse to call QPDF::getObject instead.
---
 libqpdf/QPDFObjectHandle.cc | 14 --------------
 libqpdf/QPDFParser.cc       | 23 ++++++++++++++---------
 2 files changed, 14 insertions(+), 23 deletions(-)

(limited to 'libqpdf')

diff --git a/libqpdf/QPDFObjectHandle.cc b/libqpdf/QPDFObjectHandle.cc
index aae06529..d4a75fae 100644
--- a/libqpdf/QPDFObjectHandle.cc
+++ b/libqpdf/QPDFObjectHandle.cc
@@ -2002,20 +2002,6 @@ QPDFObjectHandle::getParsedOffset()
     }
 }
 
-QPDFObjectHandle
-QPDFObjectHandle::newIndirect(QPDF* qpdf, QPDFObjGen const& og)
-{
-    if (!og.isIndirect()) {
-        // Special case: QPDF uses objid 0 as a sentinel for direct
-        // objects, and the PDF specification doesn't allow for object
-        // 0. Treat indirect references to object 0 as null so that we
-        // never create an indirect object with objid 0.
-        QTC::TC("qpdf", "QPDFObjectHandle indirect with 0 objid");
-        return newNull();
-    }
-    return QPDFObjectHandle(qpdf, og, QPDF_Unresolved::create());
-}
-
 QPDFObjectHandle
 QPDFObjectHandle::newBool(bool value)
 {
diff --git a/libqpdf/QPDFParser.cc b/libqpdf/QPDFParser.cc
index ccdd9db0..9aa1f426 100644
--- a/libqpdf/QPDFParser.cc
+++ b/libqpdf/QPDFParser.cc
@@ -1,8 +1,8 @@
 #include <qpdf/QPDFParser.hh>
 
 #include <qpdf/QPDF.hh>
+#include <qpdf/QPDFObjGen.hh>
 #include <qpdf/QPDFObjectHandle.hh>
-#include <qpdf/QPDF_Array.hh>
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>
 
@@ -55,6 +55,7 @@ QPDFParser::parse(bool& empty, bool content_stream)
 
     while (!done) {
         bool bad = false;
+        bool indirect_ref = false;
         is_null = false;
         auto& frame = stack.back();
         auto& olist = frame.olist;
@@ -185,12 +186,16 @@ QPDFParser::parse(bool& empty, bool content_stream)
                             "QPDFObjectHandle::parse called without context"
                             " on an object with indirect references");
                     }
-                    // Try to resolve indirect objects
-                    object = QPDFObjectHandle::newIndirect(
-                        context,
-                        QPDFObjGen(
-                            olist.at(size - 2).getIntValueAsInt(),
-                            olist.back().getIntValueAsInt()));
+                    auto ref_og = QPDFObjGen(
+                        olist.at(size - 2).getIntValueAsInt(),
+                        olist.back().getIntValueAsInt());
+                    if (ref_og.isIndirect()) {
+                        object = context->getObject(ref_og);
+                        indirect_ref = true;
+                    } else {
+                        QTC::TC("qpdf", "QPDFParser indirect with 0 objid");
+                        is_null = true;
+                    }
                     olist.pop_back();
                     olist.pop_back();
                 } else if ((value == "endobj") && (state == st_top)) {
@@ -274,8 +279,8 @@ QPDFParser::parse(bool& empty, bool content_stream)
 
         case st_dictionary:
         case st_array:
-            if (!object.isDirectNull()) {
-                // No need to set description for direct nulls- they will
+            if (!indirect_ref && !object.isDirectNull()) {
+                // No need to set description for direct nulls - they will
                 // become implicit.
                 setDescriptionFromInput(object, input->getLastOffset());
                 object.setParsedOffset(input->getLastOffset());
-- 
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