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When including a grammar from another grammar, we need to make sure that any
redefines of starts and includes that that grammar does inside any of its
include elements are also removed.
The pattern nameClass allows for nested choice elements, for example
<name>
<choice>
<choice>
<name>a</name>
<name>b</name>
</choice>
<name>c</name>
</choice>
</name>
which is semantically equivalent to
<name>
<choice>
<name>a</name>
<name>b</name>
<name>c</name>
</choice>
</name>
The old code didn’t handle this correctly, as it never expected a choice inside
another choice. This patch fixes this by flattening any nested choices.
This pattern of nested choice elements comes up in RELAX NG simplification,
where all choice elements are rewritten in this nested manner, see section 4.12
of the RELAX NG specification.
RELAX NG allows for div elements inside of include elements. We need to look
inside those div elements for start and define elements that may be redefining
start and define elements in the included grammar.
Reported in https://mail.gnome.org/archives/xml/2018-October/msg00003.html
The issue seems to be that we build groups of what can be matched by
the interleave, but that these groups don’t include data, list,
and value elements, only element and text elements. This patch
extends xmlRelaxNGGetElements so that it can return these elements
for us in xmlRelaxNGComputeInterleaves. Then we make sure to
updatexmlRelaxNGNodeMatchesList as well so that it accepts the correct
types.
In commit 8c9daf79, a call to xmlFreeNode was added in
xmlSAX2StartElementNs. If a node was obtained from the freeElems list,
make sure to set the doc, otherwise xmlFreeNode wouldn't realize that
the node name might be in the dictionary, causing an invalid free.
Note that the issue fixed in commit 8c9daf79 requires commit 0ed6addb
and this one to work properly.
Found by OSS-Fuzz.
Otherwise the encoding of the document is ignored and non-ASCII
characters are serialized as numeric references even if the encoding
is specified as UTF-8.
Separate nodes in a node-set with newlines and always add a terminating
newline. This is a breaking change but the old behavior of dumping text
nodes without separator was mostly useless.
Also use buffered I/O when dumping node-sets.
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 c65c9e8ee0,
found+fixed by Bruno Haible using static libxml embedded in gettext.
If the maximum depth is exceeded, nodePush halts the parser which
results in freeing the input buffer since the previous commit. This
invalidates the attribute pointers, so the error condition must be
checked.
Found by OSS-Fuzz.
Call xmlBufResetInput before bailing out if switching the encoding
fails. Otherwise, the input pointers could be left in an invalid state.
Similar to commit f9e7997e80 for the
XML parser.
Thanks to Yunho Kim for the report.
Closes: #27
When reusing an xmlSchemaValidCtxtPtr to validate multiple xml documents
against the same schema, there is a memory leak in xmlschemas.c in
xmlSchemaClearValidCtxt(). The vctxt->idcKeys and associated counters
are not cleaned up in xmlSchemaClearValidCtxt() as they are in
xmlSchemaFreeValidCtxt(). As a result, vctxt->idcKeys grows with each
xmlValidateDoc() call that uses the same context and that memory is
never freed. Similarly, vctxt->nbIdcKeys and vctxt->sizeIdcKeys
increment and are never reset.
Closes: #23
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.
This fixes the traversal of parent nodes using xmlTextReaderNext()
when the reader is based on a preparsed document (created using
xmlReaderWalker(doc)).
Without this fix the parser will abort even though there are parent
nodes it should traverse to, if it is not currently on an element or
attribute node. This is incorrect, since it can be for example on a
text node when it needs to enter backtracking.
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.
Check whether aclocal.m4 contains the pkg.m4 macro package after running
autoreconf and print a more helpful error message.
Thanks to 林博仁 (Buo-ren Lin) for the initial patch.
Closes: #21
Currently the autogen script will always tell user to run make even
when the configure script failed, this patch changes the behavior to
only show this message when the configure script terminates without
error.
Closes: https://bugzilla.gnome.org/show_bug.cgi?id=793028
It seams this line was accidentally copied over from xmlCharEncOutFunc.
In xmlCharEncOutput output is a pointer so incrementing it by ret can
point it where it wasn't supposed to be pointing. Luckily the current
implementation doesn't dereference the pointer after advancing it.
Signed-off-by: Daniel Veillard <veillard@redhat.com>
If a nodeset to be filtered is empty, it can be returned without popping
it from the stack.
Make sure to restore the context node in all error paths and never set
it to NULL.
Save and restore the context node in RANGETO operations.
On some pre-C99 compilers, the NAN and INFINITY macros don't expand to
constant expressions.
Some MSVC versions complain about floating point division by zero in
constants.
Thanks to Fabrice Manfroi for the report.
