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[3.9] pythongh-123678: Upgrade libexpat 2.6.3 (python#123711)
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(cherry picked from commit fdc04ad)
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sethmlarson authored Sep 5, 2024
1 parent a5798d0 commit c57c4a9
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Showing 4 changed files with 36 additions and 15 deletions.
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Upgrade libexpat to 2.6.3
2 changes: 1 addition & 1 deletion Modules/expat/expat.h
Original file line number Diff line number Diff line change
Expand Up @@ -1066,7 +1066,7 @@ XML_SetReparseDeferralEnabled(XML_Parser parser, XML_Bool enabled);
*/
#define XML_MAJOR_VERSION 2
#define XML_MINOR_VERSION 6
#define XML_MICRO_VERSION 2
#define XML_MICRO_VERSION 3

#ifdef __cplusplus
}
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3 changes: 1 addition & 2 deletions Modules/expat/siphash.h
Original file line number Diff line number Diff line change
Expand Up @@ -126,8 +126,7 @@
| ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) \
| ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56))

#define SIPHASH_INITIALIZER \
{ 0, 0, 0, 0, {0}, 0, 0 }
#define SIPHASH_INITIALIZER {0, 0, 0, 0, {0}, 0, 0}

struct siphash {
uint64_t v0, v1, v2, v3;
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45 changes: 33 additions & 12 deletions Modules/expat/xmlparse.c
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
/* 2a14271ad4d35e82bde8ba210b4edb7998794bcbae54deab114046a300f9639a (2.6.2+)
/* ba4cdf9bdb534f355a9def4c9e25d20ee8e72f95b0a4d930be52e563f5080196 (2.6.3+)
__ __ _
___\ \/ /_ __ __ _| |_
/ _ \\ /| '_ \ / _` | __|
Expand Down Expand Up @@ -39,6 +39,7 @@
Copyright (c) 2022 Sean McBride <[email protected]>
Copyright (c) 2023 Owain Davies <[email protected]>
Copyright (c) 2023-2024 Sony Corporation / Snild Dolkow <[email protected]>
Copyright (c) 2024 Berkay Eren Ürün <[email protected]>
Licensed under the MIT license:
Permission is hereby granted, free of charge, to any person obtaining
Expand Down Expand Up @@ -294,7 +295,7 @@ typedef struct {
The name of the element is stored in both the document and API
encodings. The memory buffer 'buf' is a separately-allocated
memory area which stores the name. During the XML_Parse()/
XMLParseBuffer() when the element is open, the memory for the 'raw'
XML_ParseBuffer() when the element is open, the memory for the 'raw'
version of the name (in the document encoding) is shared with the
document buffer. If the element is open across calls to
XML_Parse()/XML_ParseBuffer(), the buffer is re-allocated to
Expand Down Expand Up @@ -2038,6 +2039,12 @@ XML_ParseBuffer(XML_Parser parser, int len, int isFinal) {

if (parser == NULL)
return XML_STATUS_ERROR;

if (len < 0) {
parser->m_errorCode = XML_ERROR_INVALID_ARGUMENT;
return XML_STATUS_ERROR;
}

switch (parser->m_parsingStatus.parsing) {
case XML_SUSPENDED:
parser->m_errorCode = XML_ERROR_SUSPENDED;
Expand Down Expand Up @@ -5846,18 +5853,17 @@ processInternalEntity(XML_Parser parser, ENTITY *entity, XML_Bool betweenDecl) {
/* Set a safe default value in case 'next' does not get set */
next = textStart;

#ifdef XML_DTD
if (entity->is_param) {
int tok
= XmlPrologTok(parser->m_internalEncoding, textStart, textEnd, &next);
result = doProlog(parser, parser->m_internalEncoding, textStart, textEnd,
tok, next, &next, XML_FALSE, XML_FALSE,
XML_ACCOUNT_ENTITY_EXPANSION);
} else
#endif /* XML_DTD */
} else {
result = doContent(parser, parser->m_tagLevel, parser->m_internalEncoding,
textStart, textEnd, &next, XML_FALSE,
XML_ACCOUNT_ENTITY_EXPANSION);
}

if (result == XML_ERROR_NONE) {
if (textEnd != next && parser->m_parsingStatus.parsing == XML_SUSPENDED) {
Expand Down Expand Up @@ -5894,18 +5900,17 @@ internalEntityProcessor(XML_Parser parser, const char *s, const char *end,
/* Set a safe default value in case 'next' does not get set */
next = textStart;

#ifdef XML_DTD
if (entity->is_param) {
int tok
= XmlPrologTok(parser->m_internalEncoding, textStart, textEnd, &next);
result = doProlog(parser, parser->m_internalEncoding, textStart, textEnd,
tok, next, &next, XML_FALSE, XML_TRUE,
XML_ACCOUNT_ENTITY_EXPANSION);
} else
#endif /* XML_DTD */
} else {
result = doContent(parser, openEntity->startTagLevel,
parser->m_internalEncoding, textStart, textEnd, &next,
XML_FALSE, XML_ACCOUNT_ENTITY_EXPANSION);
}

if (result != XML_ERROR_NONE)
return result;
Expand All @@ -5932,17 +5937,14 @@ internalEntityProcessor(XML_Parser parser, const char *s, const char *end,
return XML_ERROR_NONE;
}

#ifdef XML_DTD
if (entity->is_param) {
int tok;
parser->m_processor = prologProcessor;
tok = XmlPrologTok(parser->m_encoding, s, end, &next);
return doProlog(parser, parser->m_encoding, s, end, tok, next, nextPtr,
(XML_Bool)! parser->m_parsingStatus.finalBuffer, XML_TRUE,
XML_ACCOUNT_DIRECT);
} else
#endif /* XML_DTD */
{
} else {
parser->m_processor = contentProcessor;
/* see externalEntityContentProcessor vs contentProcessor */
result = doContent(parser, parser->m_parentParser ? 1 : 0,
Expand Down Expand Up @@ -7016,6 +7018,16 @@ dtdCopy(XML_Parser oldParser, DTD *newDtd, const DTD *oldDtd,
if (! newE)
return 0;
if (oldE->nDefaultAtts) {
/* Detect and prevent integer overflow.
* The preprocessor guard addresses the "always false" warning
* from -Wtype-limits on platforms where
* sizeof(int) < sizeof(size_t), e.g. on x86_64. */
#if UINT_MAX >= SIZE_MAX
if ((size_t)oldE->nDefaultAtts
> ((size_t)(-1) / sizeof(DEFAULT_ATTRIBUTE))) {
return 0;
}
#endif
newE->defaultAtts
= ms->malloc_fcn(oldE->nDefaultAtts * sizeof(DEFAULT_ATTRIBUTE));
if (! newE->defaultAtts) {
Expand Down Expand Up @@ -7558,6 +7570,15 @@ nextScaffoldPart(XML_Parser parser) {
int next;

if (! dtd->scaffIndex) {
/* Detect and prevent integer overflow.
* The preprocessor guard addresses the "always false" warning
* from -Wtype-limits on platforms where
* sizeof(unsigned int) < sizeof(size_t), e.g. on x86_64. */
#if UINT_MAX >= SIZE_MAX
if (parser->m_groupSize > ((size_t)(-1) / sizeof(int))) {
return -1;
}
#endif
dtd->scaffIndex = (int *)MALLOC(parser, parser->m_groupSize * sizeof(int));
if (! dtd->scaffIndex)
return -1;
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