29 Commits

Author SHA1 Message Date
Nick Wellnhofer
322e733b84 xinclude: Fix fallback for text includes
Fixes #772.
2024-07-18 19:32:23 +02:00
Nick Wellnhofer
1dd5e76a69 xinclude: Don't remove root element
Don't replace include element at root with empty nodeset.
2024-06-18 20:12:03 +02:00
Nick Wellnhofer
52ce0d70f9 tests: Add XInclude test for issue #733 2024-06-17 17:35:12 +02:00
Nick Wellnhofer
6e3a2ac660 xinclude: Rework xml:base fixup
The xml:base fixup was broken in more complex cases.

Also avoid parsing and building the included URI multiple times.
2023-12-25 23:38:40 +01:00
Nick Wellnhofer
e20f4d7a65 xinclude: Fix quadratic behavior in xmlXIncludeLoadTxt
Also make text inclusions work with memory buffers, for example when
using a custom entity loader, and fix a memory leak in case of invalid
characters.

Fixes #483.
2023-02-14 12:25:07 +01:00
Nick Wellnhofer
b456e3bb42 xinclude: Always allow XPtr expressions in external documents 2022-10-31 16:49:36 +01:00
Nick Wellnhofer
eef0a7395c xinclude: Implement "streaming" mode
When using xmlreader, XPointer expressions in XIncludes simply cannot
work. Expressions can reference nodes which weren't parsed yet or which
were already deleted.

After fixing nested XIncludes, we reference includes which were parsed
previously. When streaming, these nodes could have been deleted, leading
to use-after-free errors.

Disallow XPointer expressions and truncate the include table in
streaming mode.
2022-10-30 14:12:55 +01:00
Nick Wellnhofer
20e2fb4c1c xinclude: Avoid creation of subcontexts
Don't create subcontext in xmlXIncludeRecurseDoc. Save and restore 'doc'
and 'incTab' instead.

Make xmlXIncludeLoadFallback call xmlXIncludeCopyNode which seems safer
than xmlXIncludeDoProcess since the latter may modify the document.
This should also be more performant since we need to copy the whole
fallback subtree anyway. Also make sure to avoid replacements in
fallback elements in xmlXIncludeDoProcess.
2022-10-25 19:34:38 +02:00
Nick Wellnhofer
d2ed1e4f99 xinclude: Limit recursion depth
This avoids call stack overflows.
2022-10-23 18:52:56 +02:00
Nick Wellnhofer
34496f26db xinclude: Test for inclusion loops 2022-10-23 14:27:05 +02:00
Nick Wellnhofer
bc267cb9bc xinclude: Expand includes in xmlXIncludeCopyNode
This should make nested includes work reliably.

Fixes #424.
2022-10-23 14:27:05 +02:00
Nick Wellnhofer
c99cde3f21 xinclude: Also test error messages
The reader interface with XIncludes is somewhat broken and can generate
different error messages. Start to move tests which are sketchy with
reader to a separate directory.
2022-10-23 14:26:59 +02:00
Nick Wellnhofer
938105b572 Revert "xinclude: Fix regression with nested includes"
This reverts commit 7f04e297318b1b908cec20711f74f75625afed7f which
caused memory errors.

See #424.
2022-10-21 15:56:12 +02:00
Nick Wellnhofer
7f04e29731 xinclude: Fix regression with nested includes
This reverts commits 74dcc10b and 87d20b55.

Fixes #424.
2022-10-18 19:17:45 +02:00
Nick Wellnhofer
41afa89fc9 Fix short-lived regression in xmlStaticCopyNode
Commit 7618a3b1 didn't account for coalesced text nodes.

I think it would be better if xmlStaticCopyNode didn't try to coalesce
text nodes at all. This code path can only be triggered if some other
code doesn't coalesce text nodes properly. In this case, OSS-Fuzz found
such behavior in xinclude.c.
2022-04-10 14:17:31 +02:00
Nick Wellnhofer
bc06a522c1 Fix recursion check in xinclude.c
Compare the included URL with the document's URL to detect local
inclusions.

Fixes #348.
2022-03-02 20:44:41 +01:00
Nick Wellnhofer
87d20b554c Fix regression introduced with commit 74dcc10b
The code wasn't dead after all, but I can see no reason in delaying
the XPointer evaluation. This could lead to nodes included earlier
appearing in XPointer results.
2020-08-19 13:52:08 +02:00
Nick Wellnhofer
d88df4bd48 Fix corner case with empty xi:fallback
xi:fallback could become empty after recursive expansion. Use a flag
to track whether nodes should be skipped.
2020-08-17 01:17:39 +02:00
Nick Wellnhofer
1abf2967f9 Fix exponential runtime and memory in xi:fallback processing
When creating XML_XINCLUDE_START nodes, the children of the original
xi:include node must be freed, otherwise fallback content is copied
twice, doubling runtime and memory consumption for each nested
xi:fallback/xi:include pair.

Found with libFuzzer.
2020-08-07 19:59:07 +02:00
Nick Wellnhofer
0f9817c75b Don't recurse into xi:include children in xmlXIncludeDoProcess
Otherwise, nested xi:include nodes might result in a use-after-free
if XML_PARSE_NOXINCNODE is specified.

Found with libFuzzer and ASan.
2020-08-06 14:29:33 +02:00
Jared Yanovich
2a350ee9b4 Large batch of typo fixes
Closes #109.
2019-09-30 18:04:38 +02:00
William M. Brack
5d8d10bba3 fixed problem causing duplicate fallback execution (bug 139520) added
* xinclude.c: fixed problem causing duplicate fallback
  execution (bug 139520)
* test/XInclude/docs/fallback2.xml result/XInclude/fallback2.*:
  added testcase
2004-04-16 08:11:26 +00:00
Daniel Veillard
e74d2e1cb8 augmented the XInclude API to be able to pass XML parser flags down to the
* xinclude.c xmllint.c xmlreader.c include/libxml/xinclude.h
  include/libxml/xmlerror.h: augmented the XInclude API
  to be able to pass XML parser flags down to the Inclusion
  process. Also resynchronized with the Last Call W3C Working
  Draft 10 November 2003 for the xpointer attribute.
* Makefile.am test/XInclude/docs/nodes[23].xml
  result/XInclude/*: augmented the tests for the new namespace and
  testing the xpointer attribute, changed the way error messages
  are tested
* doc/*: regenerated the documentation
Daniel
2003-12-09 11:35:37 +00:00
Daniel Veillard
d076a20ea6 fixed #99082 for xi:include encoding="..." support on text includes. added
* xinclude.c parserInternals.c encoding.c: fixed #99082
  for xi:include encoding="..." support on text includes.
* result/XInclude/tstencoding.xml test/XInclude/docs/tstencoding.xml
  test/XInclude/ents/isolatin.txt : added a specific regression test
* python/generator.py python/libxml2class.txt: fixed the generator
  the new set of comments generated for doc/libxml2-api.xml were
  breaking the python generation.
Daniel
2002-11-20 13:28:31 +00:00
Daniel Veillard
e3b7d9a165 quick but apparently working implementation of xi:fallback, should close
* xinclude.c: quick but apparently working implementation of
  xi:fallback, should close bug #89684
* Makefile.am test/XInclude/docs/fallback.xml
  result/XInclude/fallback.xml: added a basic test for fallback,
  and run with --nowarning to avoid a spurious warning
* configure.in: applied patch from Frederic Crozat for python
  bindings on AMD 64bits machines.
Daniel
2002-08-14 14:11:30 +00:00
Daniel Veillard
c5f05ada40 fix #68882, cleanup the XInclude copying of node, merge back IDs in the
* tree.c valid.c xinclude.c: fix #68882, cleanup the XInclude
  copying of node, merge back IDs in the target document.
* result/XInclude/docids.xml test/XInclude/docs/docids.xml
  test/XInclude/ents/ids.xml: test case
* result/VC/ElementValid4: output changed due to a typo fix
Daniel
2002-02-10 11:57:22 +00:00
Daniel Veillard
d16df9f6ef - xinclude.c: fixed XInclude recursive behaviour bug #54678
- result/XInclude/recursive.xml test/XInclude/docs/recursive.xml
  test/XInclude/ents/inc.txt test/XInclude/ents/sub-inc.ent:
  added specific regression test
- parser.h: preparing for the XSLT mode where DTD inherited
  attributes are added to the tree.
Daniel
2001-05-23 13:44:21 +00:00
Daniel Veillard
bbd2245844 - xinclude.[ch]: Updated the namespace for the Last Call version
- result/XInclude/include test/XInclude/include: updated the
  testsuite accordingly
Daniel
2001-05-23 12:02:27 +00:00
Daniel Veillard
bf43275dd1 Bug fixes new Xinclude tests:
- nanoftp.c: fixed gcc 2.95 new warnings
- SAX.c: fixed a stupid bug
- tree.c: fixed a formatting problem when round-tripping
  from/to memory
- xinclude.c: chased memleak, fixed a base problem
- xpointer.c: added xmlXPtrBuildRangeNodeList(), finished ?
  xmlXPtrBuildNodeList()
- TODO: updated
- Makefile.am test/XInclude/docs test/XInclude/ents result/XInclude:
  adding a first small set of regression tests for XInclude
Daniel
2000-11-12 15:56:56 +00:00