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Fix many places where malloc failures aren't reported.
Make some API function return an error code. Changing the return type
from void to int is technically an ABI break but should be safe on most
platforms.
- xmlNodeSetContent
- xmlNodeSetContentLen
- xmlNodeAddContent
- xmlNodeAddContentLen
- xmlNodeSetBase
Introduce new API functions that return a separate error code if a
memory allocation fails.
- xmlNodeGetAttrValue
- xmlNodeGetBaseSafe
- xmlGetNsListSafe
Introduce private functions xmlTreeEnsureXMLDecl and xmlSplitQName4.
Don't report low-level errors to the global error handler.
Fix tree
Introduce xmlGetNsListSafe
Fix tree
The long-term plan is to remove the built-in HTTP client. There are
still a few downstream projects that use libxml2's client for other
purposes. These users should get deprecation warnings now.
Trio is a rather old cross-platform printf library which was bundled with
libxml2. It was needed for ancient pre-C99 systems without snprintf and
should be safe to remove these days.
Python 3.12 removes distutils so it's mandatory to use setuptools with
python >= 3.12.
This patch prints a message when trying to run the setup.py script with
a python >= 3.12 without setuptools and try to use the setuptools import
by default.
This patch also creates a new file, pyproject.toml [1], to prepare for
building in modern systems.
[1] https://peps.python.org/pep-0517/
This is a slight break of the API, but users really shouldn't modify the
global error struct. The goal is to make xmlLastError use static buffers
for its strings eventually. This should warn people if they're abusing
the struct.
On Windows, malloc hooks can be called after the final call to
xmlCleanupParser in various tests. This means that xmlMemMutex can still
be accessed if memory debugging is enabled, so the mutex should not be
cleaned.
This also means that tests may report spurious memory leaks on Windows.
The old implementation avoided the issue by keeping track of all
global state objects in a doubly linked list, so they could be cleaned
during xmlCleanupParser.
But as far as I can tell all memory will be freed eventually, so this is
mostly an issue with our test suite.
Note that setting global options has no effect anyway when using any of
the modern parser API functions which take an option argument like
xmlReadMemory or when using xmlCtxtUseOptions.
Global options only have an effect when using old API functions
xmlParse* or xmlSAXParse* or when using an xmlParserCtxt without calling
xmlCtxtUseOptions.
Unfortunately, many downstream projects still modify global parser
options often without realizing that it has no effect. If necessary,
switch to the modern API. Then you can safely remove all code that
changes global options.
Here's a list of deprecated functions and global variables together with
the corresponding parser options.
- xmlSubstituteEntitiesDefault, xmlSubstituteEntitiesDefaultValue
Parser option XML_PARSE_NOENT
- xmlKeepBlanksDefault, xmlKeepBlanksDefaultValue
Inverse of parser option XML_PARSE_NOBLANKS
- xmlPedanticParserDefault, xmlPedanticParserDefaultValue
Parser option XML_PARSE_PEDANTIC
- xmlLineNumbersDefault, xmlLineNumbersDefaultValue
Always enabled by new API
- xmlDoValidityCheckingDefaultValue
Parser option XML_PARSE_DTDVALID
- xmlGetWarningsDefaultValue
Inverse of parser option XML_PARSE_NOWARNING
- xmlLoadExtDtdDefaultValue
Parser options XML_PARSE_DTDLOAD and XML_PARSE_DTDATTR
Add the directory containing libxml2.dll with os.add_dll_directory to
make tests work on MinGW.
This has changed in Python 3.8 but for some reason, the issue only
turned up with Python 3.11 on MinGW. Contrary to documentation, copying
libxml2.dll into the directory containing the .pyd file doesn't work.
Covered by: test/VC/ElementValid5
This only affects XML Reader API with LIBXML_REGEXP_ENABLED and
LIBXML_VALID_ENABLED turned on.
* result/VC/ElementValid5.rdr:
- Update result to add missing error message.
* python/tests/reader2.py:
* result/VC/ElementValid6.rdr:
* result/VC/ElementValid7.rdr:
* result/valid/781333.xml.err.rdr:
- Update result to fix grammar issue.
* valid.c:
(xmlValidatePopElement):
- Check return value of xmlRegExecPushString() to handle -1, and
assign 'ret = 0;' to return 0 from xmlValidatePopElement().
This change affects xmlTextReaderValidatePop() from
xmlreader.c.
- Fix grammar of error message by changing 'child' to
'children'.
If we try to continue parsing after an error in the internal or external
subset, entity expansion accounting gets more complicated. Simply halt
the parser.
Found with libFuzzer.
As per https://peps.python.org/pep-0394/, the python binary can be one
of the following options:
- Python 2
- Python 3
- Not exist
All of the scripts in libxml2 use 'python', which may not exist.
As Python 2 reached EOL on the 1st January 2020, it's safe to move the
scripts to use python3 explicitly.
The expected errors contain an relative path, but the messages from the
parser contain absolute paths. However, due to the tests not actually
failing if there was an error this wasn't noticed.
Instead of putting relative paths in the expected messages use format()
to embed the correct absolute path.
Also use os.path.join() consistently when constructing paths to ensure
uniformly formatted paths.
Define XML_IGNORE_DEPRECATION_WARNINGS and the corresponding XML_POP_WARNINGS
for Visual Studio, and consequently define XML_IGNORE_FPTR_CAST_WARNINGS so
that we do not get a compiler warning on Visual Studio by doing a
__pragma(warning(pop)) without a corresponding __pragma(warning(push)).
Also correct the documentation a bit for XML_POP_WARNINGS.
Move up the altImport function so that we ensure that it can be referred
to and streamline it a bit, since we no longer attempt to build the
libxslt Python bits here, at least on Windows.
Makefile rules with multiple output files don't work reliably with
parallel builds. There are several ways to fix this issue with GNU Make,
but they aren't portable. I'd be really interested in a totally
reliable, cross-platform solution to this problem.
.NOTPARALLEL is also understood by BSD make, at least.
Add a new configuration flag that controls whether the outdated support
for XPointer locations (ranges and points) is enabled.
--with-xptr-locs # Autotools
LIBXML2_WITH_XPTR_LOCS # CMake
The latest spec for what it essentially an XPath extension seems to be
this working draft from 2002:
https://www.w3.org/TR/xptr-xpointer/
The xpointer() scheme is listed as "being reviewed" in the XPointer
registry since at least 2006. libxml2 seems to be the only modern
software that tries to implement this spec, but the code has many bugs
and quality issues.
The flag defaults to "off" and support for this extensions has to be
requested explicitly. The relevant API functions are deprecated.
