!13 [sync] PR-8: Refix CVE-2018-1311
From: @openeuler-sync-bot Reviewed-by: @wk333 Signed-off-by: @wk333
This commit is contained in:
commit
4c63fef6c3
@ -1,9 +1,62 @@
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From e0024267504188e42ace4dd9031d936786914835 Mon Sep 17 00:00:00 2001
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From: Karen Arutyunov <karen@codesynthesis.com>
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Date: Wed, 13 Dec 2023 09:59:07 +0200
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Subject: [PATCH] XERCESC-2188 - Use-after-free on external DTD scan
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(CVE-2018-1311)
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1311
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Origin: https://github.com/apache/xerces-c/commit/e0024267504188e42ace4dd9031d936786914835
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--- a/src/xercesc/internal/IGXMLScanner.cpp
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+++ b/src/xercesc/internal/IGXMLScanner.cpp
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@@ -1532,7 +1532,6 @@ void IGXMLScanner::scanDocTypeDecl()
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These are the instructions for observing the bug (before this commit):
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$ git clone https://github.com/apache/xerces-c.git
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$ cd xerces-c
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$ mkdir build
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$ cd build
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$ cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug ..
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$ make -j8
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$ cp ../samples/data/personal.xml .
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$ cat <<EOF >personal.dtd
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<?xml encoding="ISO-8859-1"?>
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<!ENTITY % nonExistentEntity SYSTEM "non-existent.ent">
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%nonExistentEntity;
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EOF
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$ gdb samples/StdInParse
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(gdb) b IGXMLScanner.cpp:1544
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(gdb) run <personal.xml
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1544 fReaderMgr.pushReader(reader, declDTD);
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(gdb) p declDTD
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$1 = (xercesc_4_0::DTDEntityDecl *) 0x49ac68
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(gdb) n
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1547 dtdScanner.scanExtSubsetDecl(false, true);
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(gdb) n
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1548 }
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(gdb) s
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...
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(gdb) s # The Janitor is about to delete the above declDTD.
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90 delete fData;
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(gdb) p fData
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$1 = (xercesc_4_0::DTDEntityDecl *) 0x49ac68
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(gdb) b ReaderMgr.cpp:1024
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(gdb) n
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...
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(gdb) n # Now we about to dereference the deleted declDTD.
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1024 if (curEntity && !curEntity->isExternal())
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(gdb) p curEntity
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$2 = (const xercesc_4_0::XMLEntityDecl *) 0x49ac68
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---
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src/xercesc/internal/DGXMLScanner.cpp | 6 +-
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src/xercesc/internal/IGXMLScanner.cpp | 6 +-
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src/xercesc/internal/ReaderMgr.cpp | 207 ++++++++++++++++++--------
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src/xercesc/internal/ReaderMgr.hpp | 92 ++++++++++--
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4 files changed, 229 insertions(+), 82 deletions(-)
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diff --git a/src/xercesc/internal/DGXMLScanner.cpp b/src/xercesc/internal/DGXMLScanner.cpp
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index 43342235a..895dfeb06 100644
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--- a/src/xercesc/internal/DGXMLScanner.cpp
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+++ b/src/xercesc/internal/DGXMLScanner.cpp
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@@ -1052,13 +1052,12 @@ void DGXMLScanner::scanDocTypeDecl()
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DTDEntityDecl* declDTD = new (fMemoryManager) DTDEntityDecl(gDTDStr, false, fMemoryManager);
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declDTD->setSystemId(sysId);
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declDTD->setIsExternal(true);
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@ -11,7 +64,14 @@ https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1311
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// Mark this one as a throw at end
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reader->setThrowAtEnd(true);
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@@ -3095,7 +3094,6 @@ Grammar* IGXMLScanner::loadDTDGrammar(co
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// And push it onto the stack, with its pseudo name
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- fReaderMgr.pushReader(reader, declDTD);
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+ fReaderMgr.pushReaderAdoptEntity(reader, declDTD);
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// Tell it its not in an include section
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dtdScanner.scanExtSubsetDecl(false, true);
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@@ -2131,13 +2130,12 @@ Grammar* DGXMLScanner::loadDTDGrammar(const InputSource& src,
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DTDEntityDecl* declDTD = new (fMemoryManager) DTDEntityDecl(gDTDStr, false, fMemoryManager);
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declDTD->setSystemId(src.getSystemId());
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declDTD->setIsExternal(true);
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@ -19,34 +79,572 @@ https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1311
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// Mark this one as a throw at end
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newReader->setThrowAtEnd(true);
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--- a/tests/expected/MemHandlerTest1.log
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+++ b/tests/expected/MemHandlerTest1.log
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@@ -1,4 +1,4 @@
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-At destruction, domBuilderMemMonitor has 0 bytes.
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-At destruction, sax2MemMonitor has 0 bytes.
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-At destruction, sax1MemMonitor has 0 bytes.
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+At destruction, domBuilderMemMonitor has 276 bytes.
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+At destruction, sax2MemMonitor has 276 bytes.
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+At destruction, sax1MemMonitor has 276 bytes.
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At destruction, staticMemMonitor has 0 bytes.
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--- /dev/null
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+++ b/tests/expected/MemHandlerTest1_32.log
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@@ -0,0 +1,4 @@
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+At destruction, domBuilderMemMonitor has 180 bytes.
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+At destruction, sax2MemMonitor has 180 bytes.
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+At destruction, sax1MemMonitor has 180 bytes.
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+At destruction, staticMemMonitor has 0 bytes.
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--- a/scripts/run-test.in
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+++ b/scripts/run-test.in
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@@ -46,6 +46,11 @@ run_test() {
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sed -i -e 's;\( *[0-9][0-9]* *ms *\);{timing removed};' "$output"
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exp=$(cat "${srcdir}/expected/${name}.log")
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+
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+ if [ "${name}" = "MemHandlerTest1" ] && [ "$(dpkg-architecture -q DEB_HOST_ARCH_BITS)" -eq 32 ]; then
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+ exp=$(cat "${srcdir}/expected/${name}_32.log")
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+ fi
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+
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obs=$(cat "$output")
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// And push it onto the stack, with its pseudo name
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- fReaderMgr.pushReader(newReader, declDTD);
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+ fReaderMgr.pushReaderAdoptEntity(newReader, declDTD);
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echo "------"
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// If we have a doc type handler and advanced callbacks are enabled,
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// call the doctype event.
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diff --git a/src/xercesc/internal/IGXMLScanner.cpp b/src/xercesc/internal/IGXMLScanner.cpp
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index 912ec0c62..d694b23e6 100644
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--- a/src/xercesc/internal/IGXMLScanner.cpp
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+++ b/src/xercesc/internal/IGXMLScanner.cpp
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@@ -1535,13 +1535,12 @@ void IGXMLScanner::scanDocTypeDecl()
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DTDEntityDecl* declDTD = new (fMemoryManager) DTDEntityDecl(gDTDStr, false, fMemoryManager);
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declDTD->setSystemId(sysId);
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declDTD->setIsExternal(true);
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- Janitor<DTDEntityDecl> janDecl(declDTD);
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// Mark this one as a throw at end
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reader->setThrowAtEnd(true);
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// And push it onto the stack, with its pseudo name
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- fReaderMgr.pushReader(reader, declDTD);
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+ fReaderMgr.pushReaderAdoptEntity(reader, declDTD);
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// Tell it its not in an include section
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dtdScanner.scanExtSubsetDecl(false, true);
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@@ -3098,13 +3097,12 @@ Grammar* IGXMLScanner::loadDTDGrammar(const InputSource& src,
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DTDEntityDecl* declDTD = new (fMemoryManager) DTDEntityDecl(gDTDStr, false, fMemoryManager);
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declDTD->setSystemId(src.getSystemId());
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declDTD->setIsExternal(true);
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- Janitor<DTDEntityDecl> janDecl(declDTD);
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// Mark this one as a throw at end
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newReader->setThrowAtEnd(true);
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// And push it onto the stack, with its pseudo name
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- fReaderMgr.pushReader(newReader, declDTD);
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+ fReaderMgr.pushReaderAdoptEntity(newReader, declDTD);
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// If we have a doc type handler and advanced callbacks are enabled,
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// call the doctype event.
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diff --git a/src/xercesc/internal/ReaderMgr.cpp b/src/xercesc/internal/ReaderMgr.cpp
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index d14483e3c..9f363a071 100644
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--- a/src/xercesc/internal/ReaderMgr.cpp
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+++ b/src/xercesc/internal/ReaderMgr.cpp
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@@ -45,12 +45,61 @@
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XERCES_CPP_NAMESPACE_BEGIN
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+// ---------------------------------------------------------------------------
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+// ReaderMgr::ReaderData: Constructors and Destructor
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+// ---------------------------------------------------------------------------
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+ReaderMgr::ReaderData::ReaderData( XMLReader* const reader
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+ , XMLEntityDecl* const entity
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+ , const bool adoptEntity) :
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+
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+ fReader(reader)
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+ , fEntity(entity)
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+ , fEntityAdopted(adoptEntity)
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+{
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+}
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+
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+ReaderMgr::ReaderData::~ReaderData()
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+{
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+ delete fReader;
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+
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+ if (fEntityAdopted)
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+ delete fEntity;
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+}
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+
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+// ---------------------------------------------------------------------------
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+// ReaderMgr::ReaderData: Getter methods
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+// ---------------------------------------------------------------------------
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+XMLReader* ReaderMgr::ReaderData::getReader() const
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+{
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+ return fReader;
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+}
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+
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+XMLEntityDecl* ReaderMgr::ReaderData::getEntity() const
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+{
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+ return fEntity;
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+}
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+
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+bool ReaderMgr::ReaderData::getEntityAdopted() const
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+{
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+ return fEntityAdopted;
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+}
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+
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+//
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+// This method gives up the entity object ownership but leaves the fEntity
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+// pointer intact.
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+//
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+XMLEntityDecl* ReaderMgr::ReaderData::releaseEntity()
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+{
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+ fEntityAdopted = false;
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+ return fEntity;
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+}
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+
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// ---------------------------------------------------------------------------
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// ReaderMgr: Constructors and Destructor
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// ---------------------------------------------------------------------------
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ReaderMgr::ReaderMgr(MemoryManager* const manager) :
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- fCurEntity(0)
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+ fCurReaderData(0)
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, fCurReader(0)
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, fEntityHandler(0)
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, fEntityStack(0)
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@@ -66,12 +115,11 @@ ReaderMgr::ReaderMgr(MemoryManager* const manager) :
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ReaderMgr::~ReaderMgr()
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{
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//
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- // Clean up the reader and entity stacks. Note that we don't own the
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- // entities, so we don't delete the current entity (and the entity stack
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- // does not own its elements either, so deleting it will not delete the
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- // entities it still references!)
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+ // Clean up the reader stack and orphan entities container. Note that
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+ // all adopted entities (potentially contained in fCurReaderData,
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+ // fReaderStack, and fEntityStack) are deleted here.
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//
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- delete fCurReader;
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+ delete fCurReaderData;
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delete fReaderStack;
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delete fEntityStack;
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}
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@@ -357,9 +405,9 @@ void ReaderMgr::cleanStackBackTo(const XMLSize_t readerNum)
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if (fReaderStack->empty())
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ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::RdrMgr_ReaderIdNotFound, fMemoryManager);
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- delete fCurReader;
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- fCurReader = fReaderStack->pop();
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- fCurEntity = fEntityStack->pop();
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+ delete fCurReaderData;
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+ fCurReaderData = fReaderStack->pop();
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+ fCurReader = fCurReaderData->getReader ();
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}
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}
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@@ -795,20 +843,20 @@ const XMLCh* ReaderMgr::getCurrentEncodingStr() const
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const XMLEntityDecl* ReaderMgr::getCurrentEntity() const
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{
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- return fCurEntity;
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+ return fCurReaderData? fCurReaderData->getEntity() : 0;
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}
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XMLEntityDecl* ReaderMgr::getCurrentEntity()
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{
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- return fCurEntity;
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+ return fCurReaderData? fCurReaderData->getEntity() : 0;
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}
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XMLSize_t ReaderMgr::getReaderDepth() const
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{
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// If the stack doesn't exist, its obviously zero
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- if (!fEntityStack)
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+ if (!fReaderStack)
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return 0;
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//
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@@ -816,7 +864,7 @@ XMLSize_t ReaderMgr::getReaderDepth() const
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// reader. So if there is no current reader and none on the stack,
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// its zero, else its some non-zero value.
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//
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- XMLSize_t retVal = fEntityStack->size();
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+ XMLSize_t retVal = fReaderStack->size();
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if (fCurReader)
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retVal++;
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return retVal;
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@@ -852,7 +900,7 @@ void ReaderMgr::getLastExtEntityInfo(LastExtEntityInfo& lastInfo) const
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bool ReaderMgr::isScanningPERefOutOfLiteral() const
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{
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// If the current reader is not for an entity, then definitely not
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||||
- if (!fCurEntity)
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+ if (!fCurReaderData || !fCurReaderData->getEntity())
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return false;
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||||
//
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@@ -867,13 +915,19 @@ bool ReaderMgr::isScanningPERefOutOfLiteral() const
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return false;
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}
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-
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bool ReaderMgr::pushReader( XMLReader* const reader
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, XMLEntityDecl* const entity)
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+{
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||||
+ return pushReaderAdoptEntity(reader, entity, false);
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+}
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||||
+
|
||||
+bool ReaderMgr::pushReaderAdoptEntity( XMLReader* const reader
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+ , XMLEntityDecl* const entity
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||||
+ , const bool adoptEntity)
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{
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||||
//
|
||||
// First, if an entity was passed, we have to confirm that this entity
|
||||
- // is not already on the entity stack. If so, then this is a recursive
|
||||
+ // is not already on the reader stack. If so, then this is a recursive
|
||||
// entity expansion, so we issue an error and refuse to put the reader
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// on the stack.
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//
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||||
@@ -881,19 +935,30 @@ bool ReaderMgr::pushReader( XMLReader* const reader
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||||
// nothing to do. If there is no entity stack yet, then of coures it
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||||
// cannot already be there.
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||||
//
|
||||
- if (entity && fEntityStack)
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||||
+ if (entity && fReaderStack)
|
||||
{
|
||||
- const XMLSize_t count = fEntityStack->size();
|
||||
+ // @@ Strangely, we don't check the entity at the top of the stack
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||||
+ // (fCurReaderData). Is it a bug?
|
||||
+ //
|
||||
+ const XMLSize_t count = fReaderStack->size();
|
||||
const XMLCh* const theName = entity->getName();
|
||||
for (XMLSize_t index = 0; index < count; index++)
|
||||
{
|
||||
- const XMLEntityDecl* curDecl = fEntityStack->elementAt(index);
|
||||
+ const XMLEntityDecl* curDecl =
|
||||
+ fReaderStack->elementAt(index)->getEntity();
|
||||
+
|
||||
if (curDecl)
|
||||
{
|
||||
if (XMLString::equals(theName, curDecl->getName()))
|
||||
{
|
||||
- // Oops, already there so delete reader and return
|
||||
+ // Oops, already there so delete reader and entity and
|
||||
+ // return.
|
||||
+ //
|
||||
delete reader;
|
||||
+
|
||||
+ if (adoptEntity)
|
||||
+ delete entity;
|
||||
+
|
||||
return false;
|
||||
}
|
||||
}
|
||||
@@ -905,52 +970,37 @@ bool ReaderMgr::pushReader( XMLReader* const reader
|
||||
// tell it it does own its elements.
|
||||
//
|
||||
if (!fReaderStack)
|
||||
- fReaderStack = new (fMemoryManager) RefStackOf<XMLReader>(16, true, fMemoryManager);
|
||||
-
|
||||
- // And the entity stack, which does not own its elements
|
||||
- if (!fEntityStack)
|
||||
- fEntityStack = new (fMemoryManager) RefStackOf<XMLEntityDecl>(16, false, fMemoryManager);
|
||||
+ fReaderStack = new (fMemoryManager) RefStackOf<ReaderData>(16, true, fMemoryManager);
|
||||
|
||||
//
|
||||
- // Push the current reader and entity onto their respective stacks.
|
||||
- // Note that the the current entity can be null if the current reader
|
||||
- // is not for an entity.
|
||||
+ // Push the current reader and entity onto the stack. Note that
|
||||
+ // the current entity can be null if the current reader is not for
|
||||
+ // an entity.
|
||||
//
|
||||
- if (fCurReader)
|
||||
- {
|
||||
- fReaderStack->push(fCurReader);
|
||||
- fEntityStack->push(fCurEntity);
|
||||
- }
|
||||
+ if (fCurReaderData)
|
||||
+ fReaderStack->push(fCurReaderData);
|
||||
|
||||
//
|
||||
// Make the passed reader and entity the current top of stack. The
|
||||
// passed entity can (and often is) null.
|
||||
//
|
||||
+ fCurReaderData = new (fMemoryManager) ReaderData(reader, entity, adoptEntity);
|
||||
fCurReader = reader;
|
||||
- fCurEntity = entity;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
-
|
||||
void ReaderMgr::reset()
|
||||
{
|
||||
// Reset all of the flags
|
||||
fThrowEOE = false;
|
||||
|
||||
// Delete the current reader and flush the reader stack
|
||||
- delete fCurReader;
|
||||
+ delete fCurReaderData;
|
||||
+ fCurReaderData = 0;
|
||||
fCurReader = 0;
|
||||
if (fReaderStack)
|
||||
fReaderStack->removeAllElements();
|
||||
-
|
||||
- //
|
||||
- // And do the same for the entity stack, but don't delete the current
|
||||
- // entity (if any) since we don't own them.
|
||||
- //
|
||||
- fCurEntity = 0;
|
||||
- if (fEntityStack)
|
||||
- fEntityStack->removeAllElements();
|
||||
}
|
||||
|
||||
|
||||
@@ -1014,7 +1064,9 @@ ReaderMgr::getLastExtEntity(const XMLEntityDecl*& itsEntity) const
|
||||
// search the stack; else, keep the reader that we've got since its
|
||||
// either an external entity reader or the main file reader.
|
||||
//
|
||||
- const XMLEntityDecl* curEntity = fCurEntity;
|
||||
+ const XMLEntityDecl* curEntity =
|
||||
+ fCurReaderData? fCurReaderData->getEntity() : 0;
|
||||
+
|
||||
if (curEntity && !curEntity->isExternal())
|
||||
{
|
||||
XMLSize_t index = fReaderStack->size();
|
||||
@@ -1024,7 +1076,7 @@ ReaderMgr::getLastExtEntity(const XMLEntityDecl*& itsEntity) const
|
||||
{
|
||||
// Move down to the previous element and get a pointer to it
|
||||
index--;
|
||||
- curEntity = fEntityStack->elementAt(index);
|
||||
+ curEntity = fReaderStack->elementAt(index)->getEntity();
|
||||
|
||||
//
|
||||
// If its null or its an external entity, then this reader
|
||||
@@ -1032,12 +1084,12 @@ ReaderMgr::getLastExtEntity(const XMLEntityDecl*& itsEntity) const
|
||||
//
|
||||
if (!curEntity)
|
||||
{
|
||||
- theReader = fReaderStack->elementAt(index);
|
||||
+ theReader = fReaderStack->elementAt(index)->getReader ();
|
||||
break;
|
||||
}
|
||||
else if (curEntity->isExternal())
|
||||
{
|
||||
- theReader = fReaderStack->elementAt(index);
|
||||
+ theReader = fReaderStack->elementAt(index)->getReader ();
|
||||
break;
|
||||
}
|
||||
|
||||
@@ -1048,6 +1100,11 @@ ReaderMgr::getLastExtEntity(const XMLEntityDecl*& itsEntity) const
|
||||
}
|
||||
}
|
||||
|
||||
+ // @@ It feels like we may end up with theReader being from the top of
|
||||
+ // the stack (fCurReader) and itsEntity being from the bottom of the
|
||||
+ // stack (if there are no null or external entities on the stack).
|
||||
+ // Is it a bug?
|
||||
+ //
|
||||
itsEntity = curEntity;
|
||||
return theReader;
|
||||
}
|
||||
@@ -1059,31 +1116,59 @@ bool ReaderMgr::popReader()
|
||||
// We didn't get any more, so try to pop off a reader. If the reader
|
||||
// stack is empty, then we are at the end, so return false.
|
||||
//
|
||||
+ // @@ It feels like we never pop the reader pushed to the stack first
|
||||
+ // (think of fReaderStack empty but fCurReader not null). Is it a
|
||||
+ // bug?
|
||||
+ //
|
||||
if (fReaderStack->empty())
|
||||
return false;
|
||||
|
||||
//
|
||||
- // Remember the current entity, before we pop off a new one. We might
|
||||
+ // Remember the current reader, before we pop off a new one. We might
|
||||
// need this to throw the end of entity exception at the end.
|
||||
//
|
||||
- XMLEntityDecl* prevEntity = fCurEntity;
|
||||
+ ReaderData* prevReaderData = fCurReaderData;
|
||||
const bool prevReaderThrowAtEnd = fCurReader->getThrowAtEnd();
|
||||
const XMLSize_t readerNum = fCurReader->getReaderNum();
|
||||
|
||||
//
|
||||
- // Delete the current reader and pop a new reader and entity off
|
||||
- // the stacks.
|
||||
+ // Pop a new reader and entity off the stack.
|
||||
//
|
||||
- delete fCurReader;
|
||||
- fCurReader = fReaderStack->pop();
|
||||
- fCurEntity = fEntityStack->pop();
|
||||
+ fCurReaderData = fReaderStack->pop();
|
||||
+ fCurReader = fCurReaderData->getReader();
|
||||
|
||||
//
|
||||
// If there was a previous entity, and either the fThrowEOE flag is set
|
||||
- // or reader was marked as such, then throw an end of entity.
|
||||
+ // or reader was marked as such, then throw an end of entity. Otherwise,
|
||||
+ // delete the previous reader data.
|
||||
//
|
||||
- if (prevEntity && (fThrowEOE || prevReaderThrowAtEnd))
|
||||
- throw EndOfEntityException(prevEntity, readerNum);
|
||||
+ if (prevReaderData->getEntity() && (fThrowEOE || prevReaderThrowAtEnd))
|
||||
+ {
|
||||
+ //
|
||||
+ // If the entity is adopted, then move it to fEntityStack so that
|
||||
+ // its life-time is prolonged to the life-time of this reader
|
||||
+ // manager. Also delete the previous reader data before throwing
|
||||
+ // EndOfEntityException.
|
||||
+ //
|
||||
+ XMLEntityDecl* entity;
|
||||
+
|
||||
+ if (prevReaderData->getEntityAdopted())
|
||||
+ {
|
||||
+ if (!fEntityStack)
|
||||
+ fEntityStack = new (fMemoryManager) RefStackOf<XMLEntityDecl>(16, true, fMemoryManager);
|
||||
+
|
||||
+ entity = prevReaderData->releaseEntity();
|
||||
+ fEntityStack->push(entity);
|
||||
+ }
|
||||
+ else
|
||||
+ entity = prevReaderData->getEntity();
|
||||
+
|
||||
+ delete prevReaderData;
|
||||
+
|
||||
+ throw EndOfEntityException(entity, readerNum);
|
||||
+ }
|
||||
+ else
|
||||
+ delete prevReaderData;
|
||||
|
||||
while (true)
|
||||
{
|
||||
@@ -1113,9 +1198,9 @@ bool ReaderMgr::popReader()
|
||||
return false;
|
||||
|
||||
// Else pop again and try it one more time
|
||||
- delete fCurReader;
|
||||
- fCurReader = fReaderStack->pop();
|
||||
- fCurEntity = fEntityStack->pop();
|
||||
+ delete fCurReaderData;
|
||||
+ fCurReaderData = fReaderStack->pop();
|
||||
+ fCurReader = fCurReaderData->getReader();
|
||||
}
|
||||
return true;
|
||||
}
|
||||
diff --git a/src/xercesc/internal/ReaderMgr.hpp b/src/xercesc/internal/ReaderMgr.hpp
|
||||
index f63b2194e..0855ed77a 100644
|
||||
--- a/src/xercesc/internal/ReaderMgr.hpp
|
||||
+++ b/src/xercesc/internal/ReaderMgr.hpp
|
||||
@@ -160,6 +160,12 @@ public :
|
||||
XMLReader* const reader
|
||||
, XMLEntityDecl* const entity
|
||||
);
|
||||
+ bool pushReaderAdoptEntity
|
||||
+ (
|
||||
+ XMLReader* const reader
|
||||
+ , XMLEntityDecl* const entity
|
||||
+ , const bool adoptEntity = true
|
||||
+ );
|
||||
void reset();
|
||||
|
||||
|
||||
@@ -208,16 +214,72 @@ private :
|
||||
ReaderMgr(const ReaderMgr&);
|
||||
ReaderMgr& operator=(const ReaderMgr&);
|
||||
|
||||
+ // -----------------------------------------------------------------------
|
||||
+ // Private data types
|
||||
+ // -----------------------------------------------------------------------
|
||||
+ class ReaderData : public XMemory
|
||||
+ {
|
||||
+ public :
|
||||
+ // ---------------------------------------------------------------------
|
||||
+ // Constructors and Destructor
|
||||
+ // ---------------------------------------------------------------------
|
||||
+ ReaderData
|
||||
+ ( XMLReader* const reader
|
||||
+ , XMLEntityDecl* const entity
|
||||
+ , const bool adoptEntity
|
||||
+ );
|
||||
+
|
||||
+ ~ReaderData();
|
||||
+
|
||||
+ // ----------------------------------------------------------------------
|
||||
+ // Getter methods
|
||||
+ // ----------------------------------------------------------------------
|
||||
+ XMLReader* getReader() const;
|
||||
+ XMLEntityDecl* getEntity() const;
|
||||
+ bool getEntityAdopted() const;
|
||||
+
|
||||
+ XMLEntityDecl* releaseEntity();
|
||||
+
|
||||
+ private :
|
||||
+ // ---------------------------------------------------------------------
|
||||
+ // Unimplemented constructors and operators
|
||||
+ // ---------------------------------------------------------------------
|
||||
+ ReaderData();
|
||||
+ ReaderData(const ReaderData&);
|
||||
+ ReaderData& operator=(const ReaderData&);
|
||||
+
|
||||
+ // ---------------------------------------------------------------------
|
||||
+ // Private data members
|
||||
+ //
|
||||
+ // fReader
|
||||
+ // This is the pointer to the reader object that must be destroyed
|
||||
+ // when this object is destroyed.
|
||||
+ //
|
||||
+ // fEntity
|
||||
+ // fEntityAdopted
|
||||
+ // This is the pointer to the entity object that, if adopted, must
|
||||
+ // be destroyed when this object is destroyed.
|
||||
+ //
|
||||
+ // Note that we need to keep up with which of the pushed readers
|
||||
+ // are pushed entity values that are being spooled. This is done
|
||||
+ // to avoid the problem of recursive definitions.
|
||||
+ // ---------------------------------------------------------------------
|
||||
+ XMLReader* fReader;
|
||||
+ XMLEntityDecl* fEntity;
|
||||
+ bool fEntityAdopted;
|
||||
+ };
|
||||
+
|
||||
// -----------------------------------------------------------------------
|
||||
// Private data members
|
||||
//
|
||||
- // fCurEntity
|
||||
- // This is the current top of stack entity. We pull it off the stack
|
||||
- // and store it here for efficiency.
|
||||
+ // fCurReaderData
|
||||
+ // This is the current top of the reader data stack. We pull it off
|
||||
+ // the stack and store it here for efficiency.
|
||||
//
|
||||
// fCurReader
|
||||
- // This is the current top of stack reader. We pull it off the
|
||||
- // stack and store it here for efficiency.
|
||||
+ // This is the reader of the current top of the reader data stack.
|
||||
+ // It contains the same value as fCurReaderData->fReader or NULL,
|
||||
+ // if fCurReaderData is NULL. We store it here for efficiency.
|
||||
//
|
||||
// fEntityHandler
|
||||
// This is the installed entity handler. Its installed via the
|
||||
@@ -225,10 +287,14 @@ private :
|
||||
// process of creating external entity readers.
|
||||
//
|
||||
// fEntityStack
|
||||
- // We need to keep up with which of the pushed readers are pushed
|
||||
- // entity values that are being spooled. This is done to avoid the
|
||||
- // problem of recursive definitions. This stack consists of refs to
|
||||
- // EntityDecl objects for the pushed entities.
|
||||
+ // This is a storage of orphaned XMLEntityDecl objects. The
|
||||
+ // popReader() function adds a reader manager-adopted entity object
|
||||
+ // to this storage before passing its pointer to the constructor
|
||||
+ // of the being thrown EndOfEntityException exception. This makes
|
||||
+ // sure that the life-time of an entity exposed to the exception
|
||||
+ // handlers is the same as the life-time of reader manager (and so
|
||||
+ // normally the life-time of the scanner which embeds the reader
|
||||
+ // manager).
|
||||
//
|
||||
// fNextReaderNum
|
||||
// This is the reader serial number value. Each new reader that is
|
||||
@@ -236,8 +302,8 @@ private :
|
||||
// us catch things like partial markup errors and such.
|
||||
//
|
||||
// fReaderStack
|
||||
- // This is the stack of reader references. We own all the readers
|
||||
- // and destroy them when they are used up.
|
||||
+ // This is the stack of reader data references. We own all the
|
||||
+ // entries and destroy them when they are used up.
|
||||
//
|
||||
// fThrowEOE
|
||||
// This flag controls whether we throw an exception when we hit an
|
||||
@@ -252,12 +318,12 @@ private :
|
||||
// fStandardUriConformant
|
||||
// This flag controls whether we force conformant URI
|
||||
// -----------------------------------------------------------------------
|
||||
- XMLEntityDecl* fCurEntity;
|
||||
+ ReaderData* fCurReaderData;
|
||||
XMLReader* fCurReader;
|
||||
XMLEntityHandler* fEntityHandler;
|
||||
RefStackOf<XMLEntityDecl>* fEntityStack;
|
||||
unsigned int fNextReaderNum;
|
||||
- RefStackOf<XMLReader>* fReaderStack;
|
||||
+ RefStackOf<ReaderData>* fReaderStack;
|
||||
bool fThrowEOE;
|
||||
XMLReader::XMLVersion fXMLVersion;
|
||||
bool fStandardUriConformant;
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
Name: xerces-c
|
||||
Version: 3.2.2
|
||||
Release: 4
|
||||
Release: 5
|
||||
Summary: A Validating XML Parser
|
||||
License: ASL 2.0
|
||||
URL: http://xml.apache.org/xerces-c/
|
||||
@ -66,6 +66,9 @@ rm -rf $RPM_BUILD_ROOT%{_bindir}
|
||||
%doc README NOTICE CREDITS doc _docs/*
|
||||
|
||||
%changelog
|
||||
* Wed Feb 21 2024 wangkai <13474090681@163.com> - 3.2.2-5
|
||||
- Refix CVE-2018-1311
|
||||
|
||||
* Mon May 31 2021 huanghaitao <huanghaitao8@huawei.com> - 3.2.2-4
|
||||
- Completing build dependencies to fix gcc-c++ compiler missing error
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user