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From what I can tell, some really early Cygwin versions from around
1998-2000 used to erroneously define _WIN32. This was eventually fixed,
but these days, the `defined(_WIN32) && !defined(__CYGWIN__)` idiom is
unnecessary.
Now, we only check for __CYGWIN__ in xmlexports.h when deciding whether
to use __declspec.
These functions are only needed internally for validation.
xmlGetRefs is inherently unsafe because the ref table isn't updated
if attributes are removed (unlike the ids table).
None of the Ubuntu 20.04 packages depending on libxml2 use any of these
functions (except xmlFreeRefTable in libxslt), so it seems perfectly
safe to deprecate them.
Remove xmlIsRef and xmlRemoveRef from the Python bindings.
Use a bitmask instead of magic values to
- keep track whether the validation context is part of a parser context
- keep track whether xmlValidateDtdFinal was called
This allows to add addtional flags later.
Note that this deliberately changes the name of a public struct member,
assuming that this was always private data never to be used by client
code.
This file was undocumented and never used anywhere. Maybe users were
supposed to rename this file to xmlversion.h manually. These days, both
CMake and win32/configure.js generate xmlversion.h from xmlversion.h.in,
just like the Autotools build.
Make the parser context's "pushTab" point to an array of structs
instead of void pointers. This avoids casting unrelated types to void
pointers, improving readability and portability, and allows for more
efficient packing. Ultimately, the struct could be extended to include
the contents of "nameTab" and "spaceTab", further simplifying the code.
Historically, "pushTab" was only used by the push parser (hence the
name), so the change to the public headers should be safe.
Also remove an unused parameter from xmlParseEndTag2.
All the compiler switches essentially set the same macros. The only
exception was MSVC which omitted the "extern" keyword for exported
variables. This in turn broke clang-cl.
This commit rewrites and simplifies the whole header.
Closes#163.
This is a partial revert of commit c71f9305. I'm not sure what issue
this commit was trying to solve but it seems to be related to a
circular dependency. It might be related to tree.h being included
from dict.h which is unnecessary.
Resolves!22.
Useful to avoid call stack overflows when fuzzing. Note that parsing a
parenthesized expression currently consumes more than 10 stack frames,
so this limit should be set rather low.
Optionally limit the maximum numbers of XPath operations when evaluating
an expression. Useful to avoid timeouts when fuzzing. The following
operations count towards the limit:
- XPath operations
- Location step iterations
- Union operations
Enabled by setting opLimit to a non-zero value. Note that it's the user's
responsibility to reset opCount. This allows to enforce the operation
limit across multiple reuses of an XPath context.
The _REENTRANT macro was defined unconditionally on some Win32 builds
using the Microsoft C runtime. It shouldn't have an effect under MSVCRT
and was presumably only defined because of the LIBXML_THREAD_ENABLED
issue fixed with the previous commit.
When libxml2 is compiled with threads enabled, have the header file
define LIBXML_THREAD_ENABLED even if the subsequent application by
itself does not enable threads. Otherwise, the application would see
the unthreaded API functions, but these are not exported (where it does
make a difference, like on Win32 based platforms).
While the dllimport/dllexport macros now work for Cygwin, using the
static library still requires variables to be declared as 'extern'.
This is a regression of c65c9e8ee07e2dab0647392c2bd1795a5bc99829,
found+fixed by Bruno Haible using static libxml embedded in gettext.
SAX.h contains a legacy interface with several unprefixed symbols
like `reference`, causing severe namespace pollution. The globals.h
header doesn't need any of these symbols, so remove the #include.
Cygwin does not define _WIN32, but still requires dllexport/dllimport
tags for when applications use the --disable-auto-import linker flag,
probably set by the gl_WOE32_DLL autoconf macro in woe32-dll.m4 file.
Make sure that all parameters and return values of list callback
functions exactly match the callback function type. This is required
to pass clang's Control Flow Integrity checks and to allow compilation
to asm.js with Emscripten.
Also change the `user` parameter type from `const void *` to `void *`.
Make sure that all parameters and return values of hash callback
functions exactly match the callback function type. This is required
to pass clang's Control Flow Integrity checks and to allow compilation
to asm.js with Emscripten.
Fixes bug 784861.
By always setting flush=TRUE when doing multiple reads, ICU
will not correctly handle truncated utf8 chars across read
boundaries.
The fix is to set flush=TRUE only on final read, and to
provide a pivot buffer which is maintained by libxml
between calls to ucnv_convertEx.
Don't include windows.h and wsockcompat.h from config.h but only when
needed.
Don't define _WINSOCKAPI_ manually. This was apparently done to stop
windows.h from including winsock.h which is a problem if winsock2.h
wasn't included first. But on MinGW, this causes compiler warnings.
Define WIN32_LEAN_AND_MEAN instead which has the same effect.
Always use the compiler-defined _WIN32 macro instead of WIN32.
Translate WSA error codes instead of blindly redefining POSIX error
codes on Windows. The redefinitions caused warnings in modern Windows
environments, but simply ifdef'ing out the redefinitions seems like
the wrong approach.
For https://bugzilla.gnome.org/show_bug.cgi?id=772726
* include/libxml/parser.h: Add a new parser flag XML_PARSE_NOXXE
* elfgcchack.h, xmlIO.h, xmlIO.c: associated loading routine
* include/libxml/xmlerror.h: new error raised
* xmllint.c: adds --noxxe flag to activate the option
xmlXPathEmptyNodeSet would write a NULL pointer just beyond the end of
the nodeTab array. This macro isn't used in libxml2, but in some of the
math functions in libexslt where it can result in heap corruption and
denial of service.
Found by afl-fuzz and ASan.
