8000 [3.4] bpo-29591, bpo-30694: Upgrade Modules/expat to libexpat 2.2.1 (… · python/cpython@71572bb · GitHub
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[3.4] bpo-29591, bpo-30694: Upgrade Modules/expat to libexpat 2.2.1 (#2164) (#2203)
* bpo-29591: Upgrade Modules/expat to libexpat 2.2 (#2164) * bpo-29591: Upgrade Modules/expat to libexpat 2.2 * bpo-29591: Restore Python changes on expat * bpo-29591: Remove expat config of unsupported platforms Remove the configuration (Modules/expat/*config.h) of unsupported platforms: * Amiga * MacOS Classic on PPC32 * Open Watcom * bpo-29591: Remove useless XML_HAS_SET_HASH_SALT The XML_HAS_SET_HASH_SALT define of Modules/expat/expat.h became useless since our local expat copy was upgrade to expat 2.1 (it's now expat 2.2.0). (cherry picked from commit 23ec4b5) * bpo-30694: Upgrade Modules/expat/ to libexpat 2.2.1 (#2300) New file: Modules/expat/siphash.h. (cherry picked from commit 5ff7132) * bpo-30726: PCbuild _elementtree: remove duplicate defines (#2348) bpo-30726, bpo-29591: libexpat 2.2.1 of Modules/expat/ now uses a winconfig.h configuration file which already defines: * XML_NS * XML_DTD * BYTEORDER=1234 * XML_CONTEXT_BYTES=1024 * HAVE_MEMMOVE Remove these defines from PCbuild/_elementtree.vcxproj to prevent compiler warnings. Co-Authored-By: Jeremy Kloth <jeremy.kloth@gmail.com> (cherry picked from commit c8fb58b) * bpo-30726: Fix elementtree warnings on Windows due to expat upgrade (#2319) * bpo-30726: Fix elementtree warnings on Windows Caused by usage of `getenv` which should be safe. And a few integer truncations which should also be ok. * bpo-30726: Don't ignore libexpat warnings which haypo intends to fix upstream (cherry picked from commit 87c6555)
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‎Misc/NEWS.d/next/Security/2017-07-11-22-25-24.bpo-30694.oOf3Er.rst

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Upgrade expat copy from 2.2.0 to 2.2.1 to get fixes of multiple security
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vulnerabilities including: CVE-2017-9233 (External entity infinite loop
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DoS), CVE-2016-9063 (Integer overflow, re-fix), CVE-2016-0718 (Fix
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regression bugs from 2.2.0's fix to CVE-2016-0718) and CVE-2012-0876
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(Counter hash flooding with SipHash). Note: the CVE-2016-5300 (Use os-
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specific entropy sources like getrandom) doesn't impact Python, since Python
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already gets entropy from the OS to set the expat secret using
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``XML_SetHashSalt()``.

‎Misc/NEWS.d/next/Security/2017-07-11-22-26-48.bpo-29591.cOeMX-.rst

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Update expat copy from 2.1.1 to 2.2.0 to get fixes of CVE-2016-0718 and
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CVE-2016-4472. See https://sourceforge.net/p/expat/bugs/537/ for more
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information.

‎Modules/expat/COPYING

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Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
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and Clark Cooper
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Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Expat maintainers.
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Copyright (c) 1998-2000 Thai Open Source Software Center Ltd and Clark Cooper
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Copyright (c) 2001-2017 Expat maintainers
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the

‎Modules/expat/amigaconfig.h

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‎Modules/expat/expat.h

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@@ -95,7 +95,9 @@ enum XML_Error {
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/* Added in 2.0. */
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XML_ERROR_RESERVED_PREFIX_XML,
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XML_ERROR_RESERVED_PREFIX_XMLNS,
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XML_ERROR_RESERVED_NAMESPACE_URI
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XML_ERROR_RESERVED_NAMESPACE_URI,
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/* Added in 2.2.1. */
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XML_ERROR_INVALID_ARGUMENT
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};
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enum XML_Content_Type {
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XML_EntityDeclHandler handler);
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/* OBSOLETE -- OBSOLETE -- OBSOLETE
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This handler has been superceded by the EntityDeclHandler above.
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This handler has been superseded by the EntityDeclHandler above.
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It is provided here for backward compatibility.
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This is called for a declaration of an unparsed (NDATA) entity.
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be called, despite an external subset being parsed.
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Note: If XML_DTD is not defined when Expat is compiled, returns
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XML_ERROR_FEATURE_REQUIRES_XML_DTD.
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Note: If parser == NULL, returns XML_ERROR_INVALID_ARGUMENT.
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*/
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XMLPARSEAPI(enum XML_Error)
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XML_UseForeignDTD(XML_Parser parser, XML_Bool useDTD);
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to the XML_StartElementHandler that were specified in the start-tag
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rather than defaulted. Each attribute/value pair counts as 2; thus
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this correspondds to an index into the atts array passed to the
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XML_StartElementHandler.
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XML_StartElementHandler. Returns -1 if parser == NULL.
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*/
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XMLPARSEAPI(int)
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XML_GetSpecifiedAttributeCount(XML_Parser parser);
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/* Returns the index of the ID attribute passed in the last call to
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XML_StartElementHandler, or -1 if there is no ID attribute. Each
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attribute/value pair counts as 2; thus this correspondds to an
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index into the atts array passed to the XML_StartElementHandler.
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XML_StartElementHandler, or -1 if there is no ID attribute or
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parser == NULL. Each attribute/value pair counts as 2; thus this
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correspondds to an index into the atts array passed to the
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XML_StartElementHandler.
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*/
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XMLPARSEAPI(int)
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XML_GetIdAttributeIndex(XML_Parser parser);
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entities is requested; otherwise it will return non-zero.
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Note: If XML_SetParamEntityParsing is called after XML_Parse or
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XML_ParseBuffer, then it has no effect and will always return 0.
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Note: If parser == NULL, the function will do nothing and return 0.
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*/
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XMLPARSEAPI(int)
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XML_SetParamEntityParsing(XML_Parser parser,
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Helps in preventing DoS attacks based on predicting hash
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function behavior. This must be called before parsing is started.
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Returns 1 if successful, 0 when called after parsing has started.
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Note: If parser == NULL, the function will do nothing and return 0.
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*/
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XMLPARSEAPI(int)
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XML_SetHashSalt(XML_Parser parser,
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unsigned long hash_salt);
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#define XML_HAS_SET_HASH_SALT /* Python Only: Defined for pyexpat.c. */
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/* If XML_Parse or XML_ParseBuffer have returned XML_STATUS_ERROR, then
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XML_GetErrorCode returns information about the error.
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*/
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the location is the location of the character at which the error
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was detected; otherwise the location is the location of the last
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parse event, as described above.
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Note: XML_GetCurrentLineNumber and XML_GetCurrentColumnNumber
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return 0 to indicate an error.
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Note: XML_GetCurrentByteIndex returns -1 to indicate an error.
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*/
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XMLPARSEAPI(XML_Size) XML_GetCurrentLineNumber(XML_Parser parser);
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XMLPARSEAPI(XML_Size) XML_GetCurrentColumnNumber(XML_Parser parser);
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/* Exposing the memory handling functions used in Expat */
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XMLPARSEAPI(void *)
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XML_ATTR_MALLOC
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XML_ATTR_ALLOC_SIZE(2)
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XML_MemMalloc(XML_Parser parser, size_t size);
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XMLPARSEAPI(void *)
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XML_ATTR_ALLOC_SIZE(3)
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XML_MemRealloc(XML_Parser parser, void *ptr, size_t size);
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XMLPARSEAPI(void)
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XML_GetFeatureList(void);
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/* Expat follows the GNU/Linux convention of odd number minor version for
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beta/development releases and even number minor version for stable
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releases. Micro is bumped with each release, and set to 0 with each
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change to major or minor version.
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/* Expat follows the semantic versioning convention.
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See http://semver.org.
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*/
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#define XML_MAJOR_VERSION 2
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#define XML_MINOR_VERSION 1
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#define XML_MINOR_VERSION 2
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#define XML_MICRO_VERSION 1
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#ifdef __cplusplus

‎Modules/expat/expat_external.h

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#endif
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#endif /* not defined XML_STATIC */
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#if !defined(XMLIMPORT) && defined(__GNUC__) && (__GNUC__ >= 4)
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#define XMLIMPORT __attribute__ ((visibility ("default")))
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#endif
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/* If we didn't define it above, define it away: */
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#ifndef XMLIMPORT
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#define XMLIMPORT
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#endif
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#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96))
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#define XML_ATTR_MALLOC __attribute__((__malloc__))
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#else
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#define XML_ATTR_MALLOC
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#endif
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#if defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
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#define XML_ATTR_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))
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#else
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#define XML_ATTR_ALLOC_SIZE(x)
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#endif
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#define XMLPARSEAPI(type) XMLIMPORT type XMLCALL
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#endif
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#ifdef XML_UNICODE_WCHAR_T
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#define XML_UNICODE
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# define XML_UNICODE
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# if defined(__SIZEOF_WCHAR_T__) && (__SIZEOF_WCHAR_T__ != 2)
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# error "sizeof(wchar_t) != 2; Need -fshort-wchar for both Expat and libc"
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# endif
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#endif
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#ifdef XML_UNICODE /* Information is UTF-16 encoded. */

‎Modules/expat/internal.h

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#define inline
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#endif
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#endif
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#ifndef UNUSED_P
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# ifdef __GNUC__
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# define UNUSED_P(p) UNUSED_ ## p __attribute__((__unused__))
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# else
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# define UNUSED_P(p) UNUSED_ ## p
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# endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void
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align_limit_to_full_utf8_characters(const char * from, const char ** fromLimRef);
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#ifdef __cplusplus
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}
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#endif

‎Modules/expat/macconfig.h

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