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c2f4da1a
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2017-05-21T22:08:50
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Improve XPath predicate and filter evaluation
Consolidate code paths evaluating XPath predicates and filters.
Don't push context node on stack when evaluating predicates. I have no
idea why this was done. It seems completely useless and trying to pop
the context node from a corrupted stack has already caused security
issues.
Filter nodesets in-place and don't create node sets with NULL gaps which
allows to simplify merging a great deal. Simply move matched nodes
backward and create a compact node set.
Merge xmlXPathCompOpEvalPositionalPredicate into
xmlXPathCompOpEvalPredicate.
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5af594d8
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2017-10-07T14:54:45
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Fix comparison of nodesets to strings
Fix two bugs in xmlXPathNodeValHash which could lead to errors when
comparing nodesets to strings:
- Only use contents of text nodes to compute the hash for element nodes.
Comments, PIs, and other node types don't affect the string-value and
must be ignored.
- Reset `string` to NULL for node types other than text.
Reported by Aleksei on the mailing list:
https://mail.gnome.org/archives/xml/2017-September/msg00016.html
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a58331a6
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2017-05-29T21:02:21
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Check for overflow in xmlXPathIsPositionalPredicate
Avoid undefined behavior when casting from double to int.
Found with afl-fuzz and UBSan.
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40f58521
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2017-05-26T20:16:35
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Fix axis traversal from attribute and namespace nodes
When traversing the "preceding" axis from an attribute node, we must
first go up to the attribute's containing element. Otherwise, text
children of other attributes could be returned. This made it possible
to hit a code path in xmlXPathNextAncestor which contained another bug:
The attribute node was initialized with the context node instead of the
current node. Normally, this code path is only hit via
xmlXPathNextAncestorOrSelf in which case the current and context node
are the same.
The combination of the two bugs could result in an infinite loop, found
with libFuzzer.
Traversing the "following" and the "preceding" axis from namespace nodes
should be handled similarly. This wasn't supported at all previously.
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6eb0894a
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2016-05-05T16:49:00
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Fix memory leak with XPath namespace nodes
Set hasNsNodes to 1 when adding namespace nodes via XP_TEST_HIT.
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82b73039
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2016-04-30T17:53:10
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Fix namespace axis traversal
When the namespace axis is traversed in "toBool" mode, the traversal
can exit early, before visiting all nodes. In this case, the XPath
context still contains a non-NULL tmpNsList.
This means that
- the check when to start a new traversal was wrong and
- the tmpNsList could be leaked.
Fixes bug #750037 and, by accident, bug #756075:
https://bugzilla.gnome.org/show_bug.cgi?id=750037
https://bugzilla.gnome.org/show_bug.cgi?id=756075
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f39fd66e
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2016-04-27T03:01:16
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Fix namespace::node() XPath expression
Make sure that xmlXPathNodeSetAddNs is called for namespace nodes when
matched with a namespace::node() step. This correctly sets the parent
of namespace nodes. Note that xmlXPathNodeSetAddNs must only be called
if working on the namespace axis. Otherwise, the context node is not
the parent of the namespace node and the standard XP_TEST_HIT macro
must be invoked. This explains the errors in the C14N tests that the
old TODO comment mentioned.
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02b252d7
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2015-03-08T17:00:37
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Regression test for bug #695699
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342658a1
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2015-03-08T16:46:04
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Add a couple of XPath tests
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f6aaabce
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2015-03-08T16:05:26
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Allow attributes on descendant-or-self axis
If the context node is an attribute, the attribute itself is on the
descendant-or-self axis. The principal node type of this axis is element,
so the only node test that can return the attribute is "node()". In other
words, "@attr/descendant-or-self::node()" is equivalent to "@attr".
This matches the behavior of Saxon-CE.
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bb2074e8
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2006-01-05T14:49:40
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Added regression tests for the latest XPath/pattern fixes.
* test/XPath/docs/nodes test/XPath/tests/nodespat
result/XPath/tests/nodespat: Added regression tests for
the latest XPath/pattern fixes.
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ea152c05
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2005-06-09T18:12:28
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Further enhancement for XPath streaming, consolidated with schemas usage
* pattern.c, xpath.c, include/libxml/pattern.h: Further
enhancement for XPath streaming, consolidated with
schemas usage of pattern.c. Added a new enum
xmlPatternFlags.
* doc/*, testapi.c, elfgcchack.h: updated to reflect new
enum.
* test/XPath/tests/mixedpat, test/XPath/docs/mixed,
result/XPath/mixedpat: added regression test for problems
reported in bug306348
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4ddaa56d
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2005-04-06T14:09:08
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fixed the bug in lang() as raised by Elliotte Rusty Harold added a
* xpath.c: fixed the bug in lang() as raised by Elliotte Rusty Harold
* result/XPath/tests/langsimple test/XPath/tests/langsimple
test/XPath/docs/lang: added a regression test
Daniel
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d8df6c0e
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2001-04-05T16:54:14
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Fixes in the plane: - xpath.c: fixed a [] evaluation problem reported -
Fixes in the plane:
- xpath.c: fixed a [] evaluation problem reported
- test/XPath/tests/simpleaddr: extended test
- result/XPath/simpleaddr: updated result
Daniel
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c8df0aaf
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2000-10-10T23:50:30
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Added XPointer: - configure.in Makefile.am include/makefile.am: adding
Added XPointer:
- configure.in Makefile.am include/makefile.am: adding XPointer
and XPtrtests target
- xpointer.[ch] : new files for XPointer support
- test/XPath/xptr result/XPath/xptr: added XPointer testsuite and
more XPath tests
Daniel
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e8282edd
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2000-10-10T23:01:31
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More work toward 2.2.5, integrated a number of patches
- configure.in Makefile.am win32config.h.in: trying to cleanup
make distcheck .... huh ...
- include/Makefile.am include/win32config.h: new directory
for includes
- win32/Makefile.mingw win32/README.MSDev win32/libxml2/libxml2.dsp
updated teh makefiles and instructions for WIN32
- xpath.c: small fixes
- test/XPath/ results/XPath: updated the testcases and results
- HTMLparser.c nanohttp.c testXPath.c: incorporated provided or
suggested patches
- valid.c: fixed an ID bug
Daniel
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ac260306
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2000-10-04T13:33:43
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More work and fixes on XPath:
- debugXML.c testXPath.c xpath.[ch]: More work on XPath/Xpointer,
incorporated "(TOM)" <ptittom@free.fr> patches rebuilt the XPath
examples with the extra test
Daniel
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740abf5a
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2000-10-02T23:04:54
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Big XPath cleanup continues, one URI fix:
- xpath.[ch] debugXML.c testXPath.c: fixed the XPath evaluation
engine, should be far more stable, incorporated a new version of
preceding/following axis, need testing
- uri.c: fixed file:///c:/a/b/c problem
- test/XPath/tests/idsimple: augmented the XPath tests
Daniel
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8b5dd83f
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2000-10-01T20:28:44
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- configure.in: releasing 2.2.4
- parser.[ch]: added xmlStrEqual()
- HTMLparser.c HTMLtree.c SAX.c debugXML.c entities.c parser.c
tree.c valid.c xlink.c xpath.c: converted all !xmlStrcmp to
use xmlStrEqual instead
- TODO: updated
- added an XPath test
Daniel
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b96e6438
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1999-08-29T21:02:19
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Release 1.6, lot of fixes, more validation, code cleanup, added namespace
on attributes, Daniel.
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b05deb7f
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1999-08-10T19:04:08
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Huge commit: 1.5.0, XML validation, Xpath, bugfixes, examples .... Daniel
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1566d3a9
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1999-07-15T14:24:29
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Added XPath code (http://www.w3.org/TR/xpath), updated HTML support and docs, Daniel
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