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NEWS
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NEWS file for libxml2
v2.13.5: Nov 12 2024
### Regressions
- xmlIO: Fix reading from non-regular files like pipes (Nick Wellnhofer)
- xmlreader: Fix return value of xmlTextReaderReadString (Nick Wellnhofer)
- parser: Fix loading of parameter entities in external DTDs (Nick Wellnhofer)
- parser: Fix downstream code that swaps DTDs (Nick Wellnhofer)
- parser: Fix detection of duplicate attributes (Nick Wellnhofer)
- string: Fix va_copy fallback (Nick Wellnhofer)
### Bug fixes
- xpath: Fix parsing of non-ASCII names (Nick Wellnhofer)
v2.13.4: Sep 18 2024
### Regressions
- parser: Make unsupported encodings an error in declarations
- io: don't set the executable bit when creating files (triallax)
- xmlcatalog: Improved fix for #699
- Revert "catalog: Fetch XML catalog before dumping"
- io: Add missing calls to xmlInitParser
- tree: Restore return value of xmlNodeListGetString with NULL list
- parser: Fix error handling after reaching limit
- parser: Make xmlParseChunk return an error if parser was stopped
### Bug fixes
- python: Fix SAX driver with character streams
### Improvements
- xpath: Make recursion check work with xmlXPathCompile
- parser: Report at least one fatal error
### Portability
- include: Check whether _MSC_VER is defined
v2.13.3: Jul 24 2024
### Security
- [CVE-2024-40896] Fix XXE protection in downstream code
### Regressions
- autotools: Use AC_CHECK_DECL to check for getentropy
- xinclude: Fix fallback for text includes
- io: Don't call getcwd in xmlParserGetDirectory
- io: Fix return value of xmlFileRead
- parser: Fix error return of xmlParseBalancedChunkMemory
### Improvements
- xinclude: Set error handler when parsing text
- Undeprecate xmlKeepBlanksDefault
v2.13.2: Jul 4 2024
### Regressions
- tree: Fix handling of empty strings in xmlNodeParseContent
- valid: Restore ID lookup
- parser: Reenable ctxt->directory
- uri: Handle filesystem paths in xmlBuildRelativeURISafe
- encoding: Make xmlFindCharEncodingHandler return UTF-8 handler
- encoding: Fix encoding lookup with xmlOpenCharEncodingHandler
- include: Define ATTRIBUTE_UNUSED for clang
- uri: Fix xmlBuildURI with NULL base
### Improvements
- uri: Enable Windows paths on Cygwin
- tests: Clarify licence of test/intsubset2.xml
v2.13.1: Jun 19 2024
### Regressions
- parser: Selectively reenable reading from "-"
- reader: Fix xmlTextReaderReadString
- xinclude: Set XPath context doc
- xinclude: Load included documents with XML_PARSE_DTDLOAD
- include: Don't redefine ATTRIBUTE_UNUSED
- include: Readd circular dependency between tree.h and parser.h
- xinclude: Add missing include (Jan Alexander Steffens (heftig))
- win32, msvc: fix missing linking against Bcrypt.lib (Miklos Vajna)
- xinclude: Don't raise error on empty nodeset
- parser: Make failure to load main document a warning
- tree: Fix freeing entities via xmlFreeNode
- parser: Pass global object to sax->setDocumentLocator
### Improvements
- io: Fix resetting xmlParserInputBufferCreateFilename hook
### Documentation
- Fix typo in NEWS (--with-html -> --with-http) (Ryan Carsten Schmidt)
- doc: Don't mention xmlNewInputURL
v2.13.0: Jun 12 2024
### Major changes
Most of the core code should now report malloc failures reliably. Some
API functions were extended with versions that report malloc failures.
New API functions for error handling were added:
- xmlCtxtSetErrorHandler
- xmlXPathSetErrorHandler
- xmlXIncludeSetErrorHandler
This makes it possible to register per-context error handlers without
resorting to global handlers.
A few error messages were improved and consolidated. Please update
downstream test suites accordingly.
A new parser option XML_PARSE_NO_XXE can be used to disable loading
of external entities or DTDs. This is most useful in connection with
XML_PARSE_NOENT.
Support for HTTP POST was removed.
Support for zlib, liblzma and HTTP is now disabled by default and has
to be enabled by passing --with-zlib, --with-lzma or --with-http to
configure. In legacy mode (--with-legacy) these options are enabled
by default as before.
Support for FTP will be removed in the next release.
Support for the range and point extensions of the xpointer() scheme
will be removed in the next release. The rest of the XPointer
implementation won't be affected. The xpointer() scheme will behave
like the xpath1() scheme.
Several more legacy symbols were deprecated. Users of the old "SAX1"
API functions are encouraged to upgrade to the new "SAX2" API,
available since version 2.6.0 from 2003.
Some deprecated global variables were made const:
- htmlDefaultSAXHandler
- oldXMLWDcompatibility
- xmlDefaultSAXHandler
- xmlDefaultSAXLocator
- xmlParserDebugEntities
### Deprecations and removals
- threads: Deprecate remaining ThrDef functions
- unicode: Deprecate most xmlUCSIs* functions
- memory: Remove memory debugging
- tree: Deprecate xmlRegisterNodeDefault
- tree: Deprecate xmlSetCompressMode
- html: Deprecate htmlHandleOmittedElem
- valid: Deprecate internal validation functions
- valid: Deprecate old DTD serialization API
- nanohttp: Deprecate public API
- Remove VMS support
- Remove Trio
### Bug fixes
- parser: Fix base URI of internal parameter entities
- tree: Handle predefined entities in xmlBufGetEntityRefContent
- schemas: Allow unlimited length decimals, integers etc. (Tomáš Ženčák)
- reader: Fix preservation of attributes
- parser: Always decode entities in namespace URIs
- relaxng: Fix tree corruption in xmlRelaxNGParseNameClass (Seiya Nakata)
- schemas: Fix ADD_ANNOTATION
- tree: Fix tree iteration in xmlDOMWrapRemoveNode
- tree: Declare namespace on clone in xmlDOMWrapCloneNode
- tree: Fix xmlAddSibling with last sibling
- tree: Fix xmlDocSetRootElement with multiple top-level elements
- catalog: Fetch XML catalog before dumping
- html: Don't close fd in htmlCtxtReadFd
### Improvements
- parser: Fix "Truncated multi-byte sequence" error
- Add missing _cplusplus processing clause (Sadaf Ebrahimi)
- parser: Rework handling of undeclared entities
- SAX2: Warn if URI resolution failed
- parser: Don't report error on invalid URI
- xmllint: Clean up option handling
- xmllint: Rework parsing
- parser: Don't create undeclared entity refs in substitution mode
- Make some globals const
- reader: Make xmlTextReaderReadString non-recursive
- reader: Rework xmlTextReaderRead{Inner,Outer}Xml
- Remove redundant size check (Niels Dossche)
- Remove redundant NULL check on cur (Niels Dossche)
- Remove always-false check old == cur (Niels Dossche)
- Remove redundant NULL check on cur (Niels Dossche)
- tree: Don't return empty localname in xmlSplitQName{2,3}
- xinclude: Don't try to fix base of non-elements
- tree: Don't coalesce text nodes in xmlAdd{Prev,Next}Sibling
- SAX2: Optimize appending children
- tree: Align xmlAddChild with other node insertion functions
- html: Use binary search in htmlEntityValueLookup
- io: Allocate output buffer with XML_BUFFER_ALLOC_IO
- encoding: Don't shrink input too early in xmlCharEncOutput
- tree: Tighten source doc check in xmlDOMWrapAdoptNode
- tree: Check destParent->doc in xmlDOMWrapCloneNode
- tree: Refactor text node updates
- tree: Refactor node insertion
- tree: Refactor element creation and parsing of attribute values
- tree: Simplify xmlNodeGetContent, xmlBufGetNodeContent
- buf: Don't use default buffer size for small strings
- string: Fix xmlStrncatNew(NULL, "")
- entities: Don't allow null name in xmlNewEntity
- html: Fix quadratic behavior in htmlNodeDump
- tree: Rewrite xmlSetTreeDoc
- valid: Rework xmlAddID
- tree: Remove unused node types
- tree: Make namespace comparison more consistent
- tree: Don't allow NULL name in xmlSetNsProp
- tree: Rework xmlNodeListGetString
- tree: Rework xmlTextMerge
- tree: Rework xmlNodeSetName
- tree: Simplify xmlAddChild with text parent
- tree: Disallow setting content of entity reference nodes
- tree: Rework xmlReconciliateNs
- schemas: fix spurious warning about truncated snprintf output
(Benjamin Gilbert)
- xmlschemastypes: Remove unreachable if statement (Maks Mishin)
- relaxng: Remove useless if statement (Maks Mishin)
- tree: Check for integer overflow in xmlStringGetNodeList
- http: Improve error message for HTTPS redirects
- catalog: Remove Windows hack
- save: Move DTD serialization code to xmlsave.c
- parser: Report fatal error if document entity couldn't be loaded
- xpath: Fix return of empty node-set in xmlXPathNodeCollectAndTest
- SAX2: Limit entity URI length to 2000 bytes
- parser: Account for full size of non-well-formed entities
- parser: Pop inputs if parsing DTD failed
- parser: Fix quadratic behavior when copying entities
- writer: Implement xmlTextWriterClose
- parser: Avoid duplicate namespace errors
- parser: Add XML_PARSE_NO_XXE parser option
- parser: Make xmlParseContent more useful
- error: Make xmlFormatError public
- encoding: Check whether encoding handlers support input/output
- SAX2: Enforce size limit in xmlSAX2Text with XML_PARSE_HUGE
- parser: Lower maximum entity nesting depth
- parser: Set depth limit to 2048 with XML_PARSE_HUGE
- parser: Implement xmlCtxtSetOptions
- parser: Always prefer option members over bitmask
- parser: Don't modify SAX2 handler if XML_PARSE_SAX1 is set
- parser: Rework parsing of attribute and entity values
- save: Output U+FFFD replacement characters
- parser: Simplify entity size accounting
- parser: Avoid unwanted expansion of parameter entities
- parser: Always copy content from entity to target
- parser: Simplify control flow in xmlParseReference
- parser: Remove xmlSetEntityReferenceFunc feature
- parser: Push general entity input streams on the stack
- parser: Move progressive flag into input struct
- parser: Fix in-parameter-entity and in-external-dtd checks
- xpath: Rewrite substring-before and substring-after
- xinclude: Only set xml:base if necessary
- xinclude: Allow empty nodesets
- parser: Rework general entity parsing
- io: Fix close error handling
- io: Fix read/write error handling
- io: More refactoring and unescaping fixes
- io: Move some code from xmlIO.c to parserInternals.c
- uri: Clean up special parsing modes
- xinclude: Rework xml:base fixup
- parser: Also set document properties when push parsing
- include: Move non-generated parts from xmlversion.h.in
- io: Remove support for HTTP POST
- dict: Move local RNG state to global state
- dict: Get random seed from system PRNG
- io: Don't use "-" to read from stdin
- io: Rework initialization
- io: Consolidate error messages
- xzlib: Fix harmless unsigned integer overflow
- io: Always use unbuffered input
- io: Fix detection of compressed streams
- io: Pass error codes from xmlFileOpenReal to xmlNewInputFromFile
- io: Rework default callbacks
- error: Stop printing some errors by default
- xpath: Don't free nodes of XSLT result value trees
- valid: Fix handling of enumerations
- parser: Allow recovery in xmlParseInNodeContext
- encoding: Support ASCII in xmlLookupCharEncodingHandler
- include: Remove useless 'const' from function arguments
- Avoid EDG -Wignored-qualifiers warnings on wrong 'const *' to '* const'
conversions (makise-homura)
- Avoid EDG deprecation warnings for LCC compiler (makise-homura)
- Avoid EDG -Woverflow warnings on truncating conversions by manually
truncating operand (makise-homura)
- Avoid EDG -Wtype-limits warnings on unsigned comparisons with zero by
conversion from unsigned int to int (makise-homura)
- Avoid using no_sanitize attribute on EDG even if compiler shows as GCC
(makise-homura)
### Build systems
- meson: convert boolean options to feature option (Rosen Penev)
- meson: Pass LIBXML_STATIC in dependency (Andrew Potter)
- meson: fix compilation with local binaries (Rosen Penev)
- meson: don't use dl dependency on old meson (Rosen Penev)
- meson: fix usage as a subproject (Rosen Penev)
- autotools: Fix pthread detection on FreeBSD
- build: Remove --with-fexceptions configuration option
- autotools: Remove --with-coverage configuration option
- build: Disable HTTP support by default
- Stop defining _REENTRANT
- doc: Don't install example code
- meson: Initial commit (Vincent Torri)
- build: Disable support for compression libraries by default
- Set LIBXML2_FOUND if it has been properly configured (Michele Bianchi)
- Makefile.am: omit $(top_builddir) from DEPS and LDADDS (Mike Dalessio)
### Test suite
- runtest: Work around broken EUC-JP support in musl iconv
- runtest: Check for IBM-1141 encoding handler
- fuzz: Add xmllint fuzzer
- fuzz: Add fuzzer for XML reader API
- fuzz: New tree API fuzzer
- tests: Remove testOOM
- Don't let gentest.py cast types to 'const somethingPtr' to avoid
-Wignored-qualifiers (makise-homura)
v2.12.8: Jun 12 2024
### Regressions
- parser: Fix performance regression when parsing namespaces
v2.12.7: May 13 2024
### Security
- [CVE-2024-34459] Fix buffer overread with `xmllint --htmlout`
### Regressions
- xmllint: Fix --pedantic option
- save: Handle invalid parent pointers in xhtmlNodeDumpOutput
v2.12.6: Mar 15 2024
### Regressions
- parser: Fix detection of duplicate attributes in XML namespace
- xmlreader: Fix xmlTextReaderConstEncoding
- html: Fix htmlCreatePushParserCtxt with encoding
- xmllint: Return error code if XPath returns empty nodeset
v2.12.5: Feb 4 2024
### Security
- [CVE-2024-25062] xmlreader: Don't expand XIncludes when backtracking
### Regressions
- parser: Fix crash in xmlParseInNodeContext with HTML documents
v2.12.4: Jan 15 2024
### Regressions
- parser: Fix regression parsing standalone declarations
- autotools: Readd --with-xptr-locs configuration option
- parser: Fix build --without-output
- parser: Don't grow or shrink pull parser memory buffers
- io: Fix memory lifetime issue with input buffers
v2.12.3: Dec 12 2023
### Regressions
- parser: Fix namespaces redefined from default attributes
### Build fixes
- include: Rename XML_EMPTY helper macro
- include: Move declaration of xmlInitGlobals
- include: Add missing includes
- include: Move globals from xmlsave.h to parser.h
- include: Readd circular dependency between tree.h and parser.h
v2.12.2: Dec 5 2023
### Regressions
- parser: Fix invalid free in xmlParseBalancedChunkMemoryRecover
- globals: Disable TLS in static Windows builds
- html: Reenable buggy detection of XML declarations
- tree: Fix regression when copying DTDs
- parser: Make CRLF increment line number
### Build fixes
- build: Disable compiler TLS by default
- cmake: Update config.h.cmake.in
- tests: Fix tests --with-valid --without-xinclude
v2.12.1: Nov 23 2023
### Regressions
- hash: Fix deletion of entries during scan
- parser: Only enable SAX2 if there are SAX2 element handlers
### Build fixes
- autotools: Stop checking for snprintf
- dict: Fix '__thread' before 'static'
- fix: pthread weak references in globals.c (Mike Dalessio)
- tests: Fix build with older MSVC
v2.12.0: Nov 16 2023
### Major changes
Most of the known issues leading to quadratic behavior in the XML parser
were fixed. Internal hash tables were rewritten to reduce memory
consumption.
Starting with this release, it should be enough to add the --with-legacy
configuration option to provide maximum ABI compatibility. For example,
if a code module was removed from the default configuration, the option
will add stubs for the removed symbols.
libxml2 will now store global variables in thread-local storage if supported
by the compiler. This avoids allocating the data lazily which can result in
a fatal error condition. A new API function xmlCheckThreadLocalStorage
was added so the allocation can be checked earlier if compiler TLS is not
supported. To prepare for future improvements, some API functions now expect
or return a const xmlError struct.
Several cyclic dependencies in public header files were fixed. As a result,
certain headers won't include other headers as before.
Refactoring of the encoding code has been mostly completed. Calling
xmlSwitchEncoding from client code is now fully supported, for example to
override the encoding for the push parser.
When parsing data from memory, libxml2 will now stream data chunk by chunk
instead of copying the whole buffer (possibly twice with encodings),
reducing peak memory consumption considerably.
A new API function xmlCtxtSetMaxAmplification was added to allow parsing
of files that would otherwise trigger the billion laughs protection.
Several bugs in the regex determinism checks were fixed. Invalid XML
Schemas which previous versions erroneously accepted will now be
rejected.
### Deprecations
- globals: Deprecate xmlLastError
- parser: Deprecate global parser options
- win32: Deprecate old Windows build system
### Bug fixes
- parser: Stop switching to ISO-8859-1 on encoding errors
- parser: Support encoded external PEs in entity values
- string: Fix UTF-8 validation in xmlGetUTF8Char
- SAX2: Allow multiple top-level elements
- parser: Update line number after coalescing text nodes
- parser: Check for truncated multi-byte sequences
### Improvements
- error: Make more xmlError structs constant
- parser: Remove redundant IS_CHAR check in xmlCurrentChar
- parser: Fix stack handling in xmlParseTryOrFinish
- parser: Protect against quadratic default attribute expansion
- parser: Missing checks for disableSAX
- entities: Make xmlFreeEntity public
- examples: Don't use sprintf
- encoding: Suppress -Wcast-align warnings
- parser: Use hash tables to avoid quadratic behavior
- parser: Don't skip CR in xmlCurrentChar
- dict: Rewrite dictionary hash table code
- hash: Rewrite hash table code
- malloc-fail: Report malloc failure in xmlFARegExec
- malloc-fail: Report malloc failure in xmlRegEpxFromParse
- parser: Simplify xmlStringCurrentChar
- regexp: Fix status codes and handle invalid UTF-8
- error: Make xmlGetLastError return a const error
- html: Fix logic in htmlAutoClose
- globals: Move globals back to correct header files
- globals: Use thread-local storage if available
- globals: Rework global state destruction on Windows
- globals: Define globals using macros
- globals: Introduce xmlCheckThreadLocalStorage
- globals: Make xmlGlobalState private
- threads: Move library initialization code to threads.c
- debug: Remove debugging code
- globals: Move code from threads.c to globals.c
- parser: Avoid undefined behavior in xmlParseStartTag2
- schemas: Fix memory leak of annotations in notations
- dict: Update hash function
- dict: Use thread-local storage for PRNG state
- dict: Use xoroshiro64** as PRNG
- xmllint: Fix error messages
- parser: Fix detection of null bytes
- parser: Improve error handling in push parser
- parser: Don't check inputNr in xmlParseTryOrFinish
- parser: Remove push parser debugging code
- tree: Fix copying of DTDs
- legacy: Add stubs for disabled modules
- parser: Allow to set maximum amplification factor
- entities: Don't change doc when encoding entities
- parser: Never use UTF-8 encoding handler
- encoding: Remove debugging code
- malloc-fail: Fix unsigned integer overflow in xmlTextReaderPushData
- html: Remove encoding hack in htmlCreateFileParserCtxt
- parser: Decode all data in xmlCharEncInput
- parser: Stream data when reading from memory
- parser: Optimize xmlLoadEntityContent
- parser: Don't overwrite EOF parser state
- parser: Simplify input pointer updates
- parser: Don't reinitialize parser input members
- encoding: Move rawconsumed accounting to xmlCharEncInput
- parser: Rework encoding detection
- parser: Always create UTF-8 in xmlParseReference
- html: Remove some debugging code in htmlParseTryOrFinish
- malloc-fail: Fix memory leak in xmlCompileAttributeTest
- parser: Recover more input from encoding errors
- malloc-fail: Handle malloc failures in xmlAddEncodingAlias
- malloc-fail: Fix null-deref with xmllint --copy
- xpath: Ignore entity ref nodes when computing node hash
- malloc-fail: Fix null deref after xmlXIncludeNewRef
- SAX: Always validate xml:ids
- Stop using sprintf
- Fix compiler warning on GCC < 8
- regexp: Fix determinism checks
- regexp: Fix checks for eliminated transitions
- regexp: Simplify xmlFAReduceEpsilonTransitions
- regexp: Fix cycle check in xmlFAReduceEpsilonTransitions
- schemas: Fix filename in xmlSchemaValidateFile
- schemas: Fix line numbers in streaming validation
- writer: Add error check in xmlTextWriterEndDocument
- encoding: Stop calling xmlEncodingErr
- xmlIO: Remove some calls to xmlIOErr
- parser: Improve handling of encoding and IO errors
- parser: Move xmlFatalErr to parserInternals.c
- encoding: Rework error codes
- .gitignore: Split up and rearrange .gitignore files
- .gitignore: Add runsuite.log
- Stop calling xmlMemoryDump
- examples: Don't call xmlCleanupParser and xmlMemoryDump
- xpath: Remove remaining references to valueFrame
### Portability
- python: Make it compatible with python3.12 (Daniel Garcia Moreno)
### Build systems
- cmake: Check whether static linking dependencies found in config files
(James Le Cuirot)
- autotools: Make --with-minimum disable lzma support
- build: Remove some GCC warnings
- Handle NOCONFIG case when setting locations from CMake target properties
(Markus Rickert)
- cmake: Generate better pkg-config file for SYSROOT builds under CMake
(James Le Cuirot)
- autoconf: Include non-pkg-config dependency flags in the pkg-config file
(James Le Cuirot)
- autoconf: Don't bake build time CFLAGS into pkg-config file (James Le Cuirot)
- build: Generate better pkg-config files for static-only builds (James
Le Cuirot)
- build: Generate better pkg-config file for SYSROOT builds (James Le Cuirot)
- autoconf: Allow custom --with-icu configure option
### Tests
- tests: Also test xmlNextChar in testchar.c
- tests: Start with testparser.c for extra tests
- fuzz: Raise rss_limit_mb
- fuzz: Test xmlTextReaderRead after EOF or failure
- fuzz: Test XML_PARSE_XINCLUDE | XML_PARSE_VALID
- tests: Handle entities in SAX tests
- fuzz: Disable XML_PARSE_SAX1 option in xml fuzzer
- tests: Add more tests for redefined attributes
- hash: Add hash table tests
- tests: Add ATTRIBUTE_NO_SANITIZE_INTEGER macro
- fuzz: Allow to fuzz without push, reader or output modules
- gitlab-ci: Add a "medium" config build
- python: Fix tests on MinGW
- test: Add push parser test with overridden encoding
- testapi: test_xmlSAXDefaultVersion() leaves xmlSAX2DefaultVersionValue set
to 1 with LIBXML_SAX1_ENABLED (David Kilzer)
- gitlab-ci: Lower _XOPEN_SOURCE value
- testapi: Don't set http_proxy environment variable
- test: Add push parser tests for split UTF-8 sequences
- xinclude: Lower initial table size when fuzzing
- tests: Test streaming schema validation
- runtest: Skip element name in schema error messages
### Documentation
- doc: Add notes about runtest to MAINTAINERS.md
- doc: Don't document internal macros in xmlversion.h
- doc: Allow 'unsigned' without 'int'
- doc: Improve documentation of configuration options
v2.11.6: Nov 16 2023
### Regressions
- threads: Fix --with-thread-alloc
- xinclude: Fix 'last' pointer in xmlXIncludeCopyNode
### Bug fixes
- parser: Fix potential use-after-free in xmlParseCharDataInternal
v2.11.5: Aug 9 2023
### Regressions
- parser: Make xmlSwitchEncoding always skip the BOM
- autotools: Improve iconv check
### Bug fixes
- valid: Fix c1->parent pointer in xmlCopyDocElementContent
- encoding: Always call ucnv_convertEx with flush set to false
### Portability
- autotools: fix Python module file ext for cygwin/msys2 (Christoph Reiter)
### Tests
- runtest: Fix compilation without LIBXML_HTML_ENABLED
v2.11.4: May 18 2023
Fixes a serious regression.
- parser: Fix regression when push parsing UTF-8 sequences
v2.11.3: May 11 2023
Fixes more regressions.
- xinclude: Fix false positives in inclusion loop detection
- autotools: Fix ICU detection
- parser: Fix "huge input lookup" error with push parser
- xpath: Fix build without LIBXML_XPATH_ENABLED
- hash: Fix possible startup crash with old libxslt versions
- autoconf: fix iconv library paths (Mike Dalessio)
v2.11.2: May 5 2023
Fix regressions.
- threads: Fix startup crash with weak symbol hack
- win32: Don't depend on removed .def file
- schemas: Fix memory leak in xmlSchemaValidateStream
v2.11.1: Apr 30 2023
Fixes build and ABI issues.
- cmake: Fix va_copy detection (Luca Niccoli)
- libxml.m4: Fix quoting
- Link with --undefined-version
- libxml2.syms: Revert removal of version information
v2.11.0: Apr 28 2023
### Major changes
Protection against entity expansion attacks, also known as "billion laughs"
has been greatly improved. Malicious files should be detected reliably now
and false positives should be reduced. It is possible though that large
documents which make heavy use of entities are rejected now.
This release finally fixes symbol visibility on UNIX systems. Internal
symbols will now be hidden. While these symbols were never declared in public
headers, it was still possible to declare them manually. Now this won't work.
All symbol information has been removed from the ELF version script to fix
link errors with --no-undefined-version. The version nodes are kept so it
should still be possible to run binaries linked against older versions.
About 90 memory errors in code paths handling malloc failures have been fixed.
While these issues shouldn't impact security, this improves robustness under
memory pressure.
The XInclude engine has been reworked to properly support nested includes.
Several cases of quadratic behavior in the XML push parser have been fixed.
Refactoring has begun on some buffering and encoding code with the goal of
simplifying this part of the code base and improving error reporting.
Other highlights:
- Consolidated private header files.
- Major rework of the autoconf build.
- Deprecated several outdated and internal functions.
Special thanks to Google's Open Source Security Subsidies program for
sponsoring much of the work on this release!
Ongoing work on libxml2 relies on funding. For a list of important open
issues see <https://gitlab.gnome.org/GNOME/libxml2/-/issues/507>
### Security
- Fix use-after-free in xmlParseContentInternal() (David Kilzer)
- xmllint: Fix use-after-free with --maxmem
- parser: Fix OOB read when formatting error message
- entities: Rework entity amplification checks
### Regressions
- parser: Fix regression in xmlParserNodeInfo accounting
### Bug fixes
- Fix memory errors in code handling malloc failures
- encoding: Fix error code in asciiToUTF8
- xpath: number('-') should return NaN
- xmlParseStartTag2() contains typo when checking for default definitions for
an attribute in a namespace (David Kilzer)
- uri: Fix handling of port numbers
- error: Make sure that error messages are valid UTF-8
- xinclude: Fix nested includes
### Improvements
- xmllint: Validate --maxmem integer option
- xmlValidatePopElement() can return invalid value (-1) (David Kilzer)
- parser: Rework EBCDIC code page detection
- parser: Limit name length in xmlParseEncName
- parser: Rework shrinking of input buffers
- html: Rely on CUR_CHAR to grow the input buffer
- parser: Rely on CUR_CHAR/NEXT to grow the input buffer
- valid: Make xmlValidateElement non-recursive
- html: Fix quadratic behavior in htmlParseTryOrFinish
- xmllint: Fix memory leak with --pattern --stream
- parser: Stop calling xmlParserInputShrink
- html: Impose some length limits
- valid: Allow xmlFreeValidCtxt(NULL)
- parser: Stop calling xmlParserInputGrow
- xinclude: Fix quadratic behavior in xmlXIncludeLoadTxt
- xinclude: Abort immediately if max depth was exceeded
- xpath: Only report the first error
- error: Don't move past current position
- error: Limit number of parser errors
- parser: Lower entity nesting limit with XML_PARSE_HUGE
- parser: Don't increase depth twice when parsing internal entities
- parser: Improve detection of entity loops
- parser: Only report a single entity error
- libxml.h: Remove dubious definition of LIBXML_STATIC
- html: Improve parsing of nested lists
- memory: Don't use locks in xmlMemUsed
- encoding: Remove unused variable xmlDefaultCharEncodingHandler
- Rework initialization code
- Add .editorconfig
- parser: Merge misc, prolog and epilog cases in push parser
- parser: Fix 'consumed' accounting when switching encodings
- html: Fix check for end of comment in push parser
- parser: Fix push parser with 1-3 byte initial chunk
- parser: Rewrite push parser boundary checks
- reader: Switch to xmlParserInputBufferCreateMem
- html: Don't escape ASCII chars in href attributes
- io: Don't shrink memory input buffers
- parser: Don't call xmlSHRINK from push parser
- parser: Ignore cdata argument in xmlParseCharData
- parser: Rework push parser parser progress checks
- io: Fix a few integer overflows in I/O statistics
- io: Rework xmlParserInputBufferGrow with encodings
- io: Remove xmlInputReadCallbackNop
- io: Check for memory buffer early in xmlParserInputGrow
- parser: Fix error message in xmlParseCommentComplex
- Bypass proxy in nanoHTTP for hosts in "no_proxy" (Markus Jörg)
- schemas: Fix infinite loop in xmlSchemaCheckElemSubstGroup
- threads: Remove check for pthread_equal
- xinclude: Rework XInclude cache
- xinclude: Remove inefficient refcounting scheme
- xmllint: Improve handling of empty XPath node sets
- parser: Fix potential memory leak in xmlParseAttValueInternal
- error: Don't use initGenericErrorDefaultFunc
- xpath: Lower XPath recursion limit on Windows
- Stop including sys/types.h
- Don't define WIN32 macro
- Make xmlNewSAXParserCtx take a const sax handler
- Consolidate private header files
- Remove internal macros from parserInternals.h
- Move some HTML functions to correct header file
- xmllint: Stop calling xmlSAXDefaultVersion
- Introduce xmlNewSAXParserCtxt and htmlNewSAXParserCtxt
- Don't mess with parser options in htmlParseDocument
- Remove useless call to htmlDefaultSAXHandlerInit
- Remove htmlDefaultSAXHandler from non-SAX1 build
- Don't initialize SAX handler in htmlReadMemory
- Fix htmlReadMemory mixing up XML and HTML functions
- Don't use default SAX handler to report unrelated errors
- Create stream with buffer in xmlNewStringInputStream
- xmlcatalog: Fix memory leaks
### Code quality
- xzlib: Fix implicit sign change in xz_open
- parser: Simplify calculation of available buffer space
- parser: Use size_t when subtracting input buffer pointers
- parser: Check for integer overflow when updating checkIndex
- xpath: Fix harmless integer overflow in xmlXPathTranslateFunction
- schematron: Use logical and
- relaxng: Remove useless if statement
- schemas: Remove useless if statement
- pattern: Merge identical branches
- regexp: Add sanity check in xmlRegCalloc2
- regexp: Simplify xmlRegAtomPush
- encoding: Cast toupper argument to unsigned char
- uri: Add explicit cast in xmlSaveUri
- buf: Fix return value of xmlBufGetInputBase
- parser: Fix integer overflow of input ID
- parser: Remove useless ent->etype test in xmlParseReference
- parser: Remove useless ent->children tests in xmlParseReference
- xmlmemory.c: Remove xmlMemContentShow
- libxml.h: Add comments and indentation
- libxml.h: Don't include stdio.h
- xmlexports.h: Disable docs for internal macro XMLPUBLIC
- parser: Simplify xmlParseConditionalSections
- io: Rearrange code in xmlSwitchInputEncodingInt
- warnings: Fix -Wstrict-prototypes warning
- warnings: Remove set-but-unused variables
- Fix compiler warnings in SAX2.c
- Fix unused variable warning in python/types.c
- Fix compiler warning in examples
- Fix compiler warnings in fuzzing code
- Remove unused code in nanohttp.c
- Remove or annotate char casts
- Don't use sizeof(xmlChar) or sizeof(char)
- Remove explicit integer casts
### Deprecations
- parser: Deprecate more internal functions
- parser: Deprecate some parser input functions
- parser: Deprecate xmlString*DecodeEntities
- threads: Deprecate some internal functions
- buf: Deprecate static/immutable buffers
- Deprecate internal parser functions
- Deprecate old HTML SAX API
- Generate deprecation warnings for old SAX API
- Mark more functions setting globals as deprecated
- Mark more parser functions as deprecated
- Mark most SAX1 functions as deprecated
- Deprecate some global variables
### Portability
- autoconf: Warn about outdated C compilers
- win32: Remove broken libxml2.def.src
- Remove symbols from version script
- catalog.c: Silence a cast warning on VS 2022 (Lukáš Tyrychtr)
- libxml.h: Remove ancient LynxOS setup
- Use python3 not python (Ross Burton)
- xstc/fixup-tests.py: port to Python 3 (Ross Burton)
- xstc/fixup-tests.py: unify whitespace (Ross Burton)
- Remove hacky heuristic from b2dc5675 (Alex Richardson)
- Avoid creating an out-of-bounds pointer by rewriting a check
(Alex Richardson)
- Hide internal functions
- Correctly relocate internal pointers after realloc() (Alex Richardson)
- Visual Studio builds: Allow silencing deprecation warnings (Chun-wei Fan)
- Visual Studio: Define XML_DEPRECATED (Chun-wei Fan)
- xmllint: Include <io.h> on Windows
- warnings: Work around MSVC bug
- sources: Silence C4013 warnings on Visual Studio (Chun-wei Fan)
- python/setup.py.in: Improve Windows import patching (Chun-wei Fan)
- python: Create .pyd on Windows
- Fix Python build on Windows
- Fix Windows compiler warnings in python/types.c
- Fix libxml_PyFileGet
- Remove BeOS support
- Fix libxml_PyFileGet with stdout on macOS
- Migrate from PyEval_ to PyObject_
- Port build_glob.py to Python 3
- Port genChRanges.py to Python 3
- xmlexports.h: Remove LIBXML_FASTCALL optimization
- Remove XMLCALL and XMLCDECL macros from public headers
- Remove XMLDECL macro from .c files
### Build systems
- cmake: Link against `dl` and `dld` only when `LIBXML2_WITH_MODULES` is
enabled (Alexander Kutelev)
- autotools: Fix make distcheck
- Remove RPM build, Makefile.tests, README.tests
- libxml.m4: deprecate AM_PATH_XML2, wrap PKG_CHECK_MODULES instead
(Ross Burton)
- libxml.m4: fix -Wstrict-prototypes (Sam James)
- cmake: Build static library with -DLIBXML_STATIC
- autotools: Don't use version script on Windows
- autotools: Fix winsock detection
- autotools: Only add network libraries if HTTP/FTP enabled
- autotools: Disable parallel Python build
- python: Don't output missing generators during build
- build: Remove check for broken ss_family
- http: Simplify IPv6 checks
- autotools: Fix network checks on Windows
- Fix detection of GNU libiconv
- cmake: Fix Python installation
- cmake: Don't check for Python 2
- configure.ac: Also check for MSYS host
- Improve network library detection
- Detect ws2_32 with AC_SEARCH_LIBS
- Rework network configure checks
- Remove arg cast configure checks
- Fix dlopen check
- Remove HAVE_WIN32_THREADS configuration flag
- Rework dlopen and pthread detection
- Fix test in configure.ac
- cmake: Enable GCC compiler warnings
- Always link with -no-undefined
- Use AM_CFLAGS and AM_LDFLAGS consistently
- Remove -Wredundant-decls
- Call AC_CHECK_* with multiple arguments
- configure.ac: Remove checks for unused programs
- Rework library detection in configure.ac
- Rearrange configure.ac
- Consolidate zlib and lzma detection
- Remove "runtime debugging"
- Consolidate simple API modules in configure.ac
- Fix dependency resolution in configure.ac
- Fix --with-valid --without-regexps build
- Fix --with-schemas --without-xpath build
- Don't build unneeded .c source files
- Move xmlIsXHTML to tree.c
- Cleanup distribution settings in Makefile.am
- Also clean *.pyc files for Python 2
- Don't distribute libxml2.spec
### Tests
- testchar: Add test for memory pull parser with encoding
- fuzz: Also test init function of URI fuzzer
- fuzz: Separate fuzzer for DTD validation
- gitlab-ci: Enable all "integer" sanitizers
- fuzz: Inject random malloc failures
- fuzz: Support variable integer sizes in fuzz data
- fuzz: Fix duplicate detection in fuzzEntityRecorder
- fuzz: Set filename in xmlFuzzEntityLoader
- fuzz: Allow xmlFuzzReadString(NULL)
- fuzz: Fix Makefile dependencies
- fuzz: Add test/recurse to seed corpus
- fuzz: Add separate XInclude fuzzer
- runsuite: Some errors are expected
- testrecurse: Test entity expansion stats
- testapi.c: Initialize catalog early
- gentest.py: Fix memory leak in API tests
- tests: Enable "runsuite" test
- python/tests/reader2: use absolute paths everywhere (Ross Burton)
- python/tests/reader2: always exit(1) if a test fails (Ross Burton)
- testModule: exit if the module can't be opened (Ross Burton)
- CI: disable modules in gcc:static build (Ross Burton)
- CI: fix CI on MinGW builds (Ross Burton)
- python: Fix memory leak checks
- tests: Check that xmlInitParser doesn't allocate memory
- tests: Fix use-after-free in Python tests
- tests: Remove unneeded #includes