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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.
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.
One of the operation on the reader could resolve entities
leading to the classic expansion issue. Make sure the
buffer used for xmlreader operation is bounded.
Introduce a new allocation type for the buffers for this effect.
For https://bugzilla.gnome.org/show_bug.cgi?id=689483
It seems there are functions that do use the const qualifier for some of the
arguments, but it seems that there are a lot of functions that don't use it and
probably should.
So I created a patch against 2.9.0 that makes as much as possible const in
tree.h, and changed other files as needed.
There were a lot of cases like "const xmlNodePtr node". This doesn't actually
do anything, there the *pointer* is constant not the object it points to. So I
changed those to "const xmlNode *node".
I also removed some consts, mostly in the Copy functions, because those
functions can actually modify the doc or node they copy from
This patch adds xmlXPathSetContextNode and xmlXPathNodeEval,
which make it easier to evaluation XPath expressions with a
context node other than the document root without poking about
inside the internals of the context.
This patch is compile-tested only, and is my first libxml2
contribution, so please go easy.
Signed-off-by: Alex Bligh <alex@alex.org.uk>
If entities expansion in the XML parser is asked for,
it is possble to craft relatively small input document leading
to excessive on-the-fly content generation.
This patch accounts for those replacement and stop parsing
after a given threshold. it can be bypassed as usual with the
HUGE parser option.
Otherwise, direct calls to xmlFree() etc. from the application will
use a different set of allocation functions to what was used to allocate
the memory internally.
Building 2.9.0 on MSVC7.1 was failing
This is because HAVE_CONFIG_H is not #defined
The patch addresses the above, adds testrecurse.exe and the
standard "make check" suite of tests to the MSVC makefile, and also
fixes the following (MSVC7.1) warnings:
buf.c(674) : warning C4028: formal parameter 1 different from
declaration
libxml2\timsort.h(71) : warning C4028: formal parameter 1 different from
declaration
