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Change the default handler definitions to match the result after calling
the initialization functions.
This makes sure that no thread-local variables are accessed when calling
xmlInitParser.
If this check succeeds, xmlParseCharData could be called over and over
again without making progress, resulting in an infinite loop.
It's only important to check for XML_PARSER_EOF which is done later.
Related to #441.
Remove inaccurate xmlParseCheckTransition check.
Remove non-incremental xmlParseGetLasts check.
Add functions that check for several boundary constructs more
accurately, keeping track of progress in ctxt->checkIndex.
Fixes#439.
This is another attempt at fixing parser progress checks. Instead of
relying on in->consumed, which could overflow, change some content
parser functions to make guaranteed progress on certain byte sequences.
This is another attempt at fixing parser progress checks. Instead of
relying on in->consumed, which could overflow, make the attribute parser
functions return a NULL name only if they don't make progress.
This is another attempt at fixing parser progress checks. Instead of
relying on in->consumed, which could overflow, change some DTD parser
functions to make guaranteed progress on certain byte sequences.
In some cases, for example when using encoders, the read callback was
set to NULL, in other cases it was set to xmlInputReadCallbackNop.
xmlGROW only tested for xmlInputReadCallbackNop, resulting in errors
when parsing large encoded content from memory.
Always use a NULL callback for memory buffers to avoid ambiguities.
Fixes#262.
Also impose size limits when XML_PARSE_HUGE is set. Limit size of names
to XML_MAX_TEXT_LENGTH (10 million bytes) and other content to
XML_MAX_HUGE_LENGTH (1 billion bytes).
Move some the length checks to the end of the respective loop to make
them strict.
xmlParseEntityValue didn't have a length limitation at all. But without
XML_PARSE_HUGE, this should eventually trigger an error in xmlGROW.
Thanks to Maddie Stone working with Google Project Zero for the report!
Fix memory leak in case xmlParseAttValueInternal is called with a NULL
`len` a non-NULL `alloc` argument. This static function is never called
with such arguments internally, but the misleading code should be fixed
nevertheless.
Fixes#422.
Remove explicit integer casts as final operation
- in assignments
- when passing arguments
- when returning values
Remove casts
- to the same type
- from certain range-bound values
The main motivation is that these explicit casts don't change the result
of operations and only render UBSan's implicit-conversion checks
useless. Removing these casts allows UBSan to detect cases where
truncation or sign-changes occur unexpectedly.
Document some explicit casts as truncating and add a few missing ones.
Private functions were previously declared
- in header files in the root directory
- in public headers guarded with IN_LIBXML
- in libxml.h
- redundantly in source files that used them.
Consolidate all private header files in include/private.
xmlCtxtReadDoc used to create an input stream involving
xmlNewStringInputStream. This would create a stream without an input
buffer, causing problems with encodings (see #34).
After commit aab584dc3, an error was returned even with UTF-8 encodings
which happened to work before.
Make xmlCtxtReadDoc call xmlCtxtReadMemory which doesn't suffer from
these issues. Also fix htmlCtxtReadDoc.
Fixes#397.
