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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).
This commit is contained in:
Victor Stinner 2017-06-15 00:54:36 +02:00 committed by GitHub
parent f7e07840d7
commit 23ec4b57e1
14 changed files with 527 additions and 476 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Misc/NEWS
View File

@ -362,6 +362,10 @@ Extension Modules
Library
-------
- [Security] bpo-29591: Update expat copy from 2.1.1 to 2.2.0 to get fixes
of CVE-2016-0718 and CVE-2016-4472. See
https://sourceforge.net/p/expat/bugs/537/ for more information.
- bpo-24744: pkgutil.walk_packages function now raises ValueError if *path*
is a string. Patch by Sanyam Khurana.

5
Modules/expat/COPYING
View File

@ -1,6 +1,5 @@
Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
and Clark Cooper
Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Expat maintainers.
Copyright (c) 1998-2000 Thai Open Source Software Center Ltd and Clark Cooper
Copyright (c) 2001-2016 Expat maintainers
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the

32
Modules/expat/amigaconfig.h
View File

@ -1,32 +0,0 @@
#ifndef AMIGACONFIG_H
#define AMIGACONFIG_H
/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */
#define BYTEORDER 4321
/* Define to 1 if you have the `bcopy' function. */
#define HAVE_BCOPY 1
/* Define to 1 if you have the <check.h> header file. */
#undef HAVE_CHECK_H
/* Define to 1 if you have the `memmove' function. */
#define HAVE_MEMMOVE 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* whether byteorder is bigendian */
#define WORDS_BIGENDIAN
/* Define to specify how much context to retain around the current parse
point. */
#define XML_CONTEXT_BYTES 1024
/* Define to make parameter entity parsing functionality available. */
#define XML_DTD
/* Define to make XML Namespaces functionality available. */
#define XML_NS
#endif /* AMIGACONFIG_H */

17
Modules/expat/expat.h
View File

@ -342,7 +342,7 @@ XML_SetEntityDeclHandler(XML_Parser parser,
XML_EntityDeclHandler handler);
/* OBSOLETE -- OBSOLETE -- OBSOLETE
This handler has been superceded by the EntityDeclHandler above.
This handler has been superseded by the EntityDeclHandler above.
It is provided here for backward compatibility.
This is called for a declaration of an unparsed (NDATA) entity.
@ -915,8 +915,6 @@ XMLPARSEAPI(int)
XML_SetHashSalt(XML_Parser parser,
unsigned long hash_salt);
#define XML_HAS_SET_HASH_SALT /* Python Only: Defined for pyexpat.c. */
/* If XML_Parse or XML_ParseBuffer have returned XML_STATUS_ERROR, then
XML_GetErrorCode returns information about the error.
*/
@ -975,9 +973,12 @@ XML_FreeContentModel(XML_Parser parser, XML_Content *model);
/* Exposing the memory handling functions used in Expat */
XMLPARSEAPI(void *)
XML_ATTR_MALLOC
XML_ATTR_ALLOC_SIZE(2)
XML_MemMalloc(XML_Parser parser, size_t size);
XMLPARSEAPI(void *)
XML_ATTR_ALLOC_SIZE(3)
XML_MemRealloc(XML_Parser parser, void *ptr, size_t size);
XMLPARSEAPI(void)
@ -1033,14 +1034,12 @@ XMLPARSEAPI(const XML_Feature *)
XML_GetFeatureList(void);
/* Expat follows the GNU/Linux convention of odd number minor version for
beta/development releases and even number minor version for stable
releases. Micro is bumped with each release, and set to 0 with each
change to major or minor version.
/* Expat follows the semantic versioning convention.
See http://semver.org.
*/
#define XML_MAJOR_VERSION 2
#define XML_MINOR_VERSION 1
#define XML_MICRO_VERSION 1
#define XML_MINOR_VERSION 2
#define XML_MICRO_VERSION 0
#ifdef __cplusplus
}

14
Modules/expat/expat_external.h
View File

@ -69,12 +69,26 @@
#endif
#endif /* not defined XML_STATIC */
#if !defined(XMLIMPORT) && defined(__GNUC__) && (__GNUC__ >= 4)
#define XMLIMPORT __attribute__ ((visibility ("default")))
#endif
/* If we didn't define it above, define it away: */
#ifndef XMLIMPORT
#define XMLIMPORT
#endif
#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96))
#define XML_ATTR_MALLOC __attribute__((__malloc__))
#else
#define XML_ATTR_MALLOC
#endif
#if defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
#define XML_ATTR_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))
#else
#define XML_ATTR_ALLOC_SIZE(x)
#endif
#define XMLPARSEAPI(type) XMLIMPORT type XMLCALL

22
Modules/expat/internal.h
View File

@ -71,3 +71,25 @@
#define inline
#endif
#endif
#ifndef UNUSED_P
# ifdef __GNUC__
# define UNUSED_P(p) UNUSED_ ## p __attribute__((__unused__))
# else
# define UNUSED_P(p) UNUSED_ ## p
# endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
void
align_limit_to_full_utf8_characters(const char * from, const char ** fromLimRef);
#ifdef __cplusplus
}
#endif

53
Modules/expat/macconfig.h
View File

@ -1,53 +0,0 @@
/*================================================================
** Copyright 2000, Clark Cooper
** All rights reserved.
**
** This is free software. You are permitted to copy, distribute, or modify
** it under the terms of the MIT/X license (contained in the COPYING file
** with this distribution.)
**
*/
#ifndef MACCONFIG_H
#define MACCONFIG_H
/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */
#define BYTEORDER 4321
/* Define to 1 if you have the `bcopy' function. */
#undef HAVE_BCOPY
/* Define to 1 if you have the `memmove' function. */
#define HAVE_MEMMOVE
/* Define to 1 if you have a working `mmap' system call. */
#undef HAVE_MMAP
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* whether byteorder is bigendian */
#define WORDS_BIGENDIAN
/* Define to specify how much context to retain around the current parse
point. */
#undef XML_CONTEXT_BYTES
/* Define to make parameter entity parsing functionality available. */
#define XML_DTD
/* Define to make XML Namespaces functionality available. */
#define XML_NS
/* Define to empty if `const' does not conform to ANSI C. */
#undef const
/* Define to `long' if <sys/types.h> does not define. */
#define off_t long
/* Define to `unsigned' if <sys/types.h> does not define. */
#undef size_t
#endif /* ifndef MACCONFIG_H */

47
Modules/expat/watcomconfig.h
View File

@ -1,47 +0,0 @@
/* expat_config.h for use with Open Watcom 1.5 and above. */
#ifndef WATCOMCONFIG_H
#define WATCOMCONFIG_H
#ifdef __NT__
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#endif
/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */
#define BYTEORDER 1234
/* Define to 1 if you have the `memmove' function. */
#define HAVE_MEMMOVE 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT "expat-bugs@mail.libexpat.org"
/* Define to the full name of this package. */
#define PACKAGE_NAME "expat"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "expat 2.0.0"
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#define PACKAGE_VERSION "2.0.0"
/* Define to specify how much context to retain around the current parse
point. */
#define XML_CONTEXT_BYTES 1024
/* Define to make parameter entity parsing functionality available. */
#define XML_DTD 1
/* Define to make XML Namespaces functionality available. */
#define XML_NS 1
#endif

113
Modules/expat/xmlparse.c
View File

@ -2,9 +2,22 @@
See the file COPYING for copying permission.
*/
#include <stddef.h>
#include <string.h> /* memset(), memcpy() */
#include <assert.h>
#include <limits.h> /* UINT_MAX */
#ifdef WIN32
#define getpid GetCurrentProcessId
#else
#include <sys/time.h> /* gettimeofday() */
#include <sys/types.h> /* getpid() */
#include <unistd.h> /* getpid() */
#endif
#define XML_BUILDING_EXPAT 1
#ifdef COMPILED_FROM_DSP
#ifdef WIN32
#include "winconfig.h"
#elif defined(MACOS_CLASSIC)
#include "macconfig.h"
@ -14,13 +27,7 @@
#include "watcomconfig.h"
#elif defined(HAVE_EXPAT_CONFIG_H)
#include <expat_config.h>
#endif /* ndef COMPILED_FROM_DSP */
#include <stddef.h>
#include <string.h> /* memset(), memcpy() */
#include <assert.h>
#include <limits.h> /* UINT_MAX */
#include <time.h> /* time() */
#endif /* ndef WIN32 */
#include "ascii.h"
#include "expat.h"
@ -432,7 +439,7 @@ static ELEMENT_TYPE *
getElementType(XML_Parser parser, const ENCODING *enc,
const char *ptr, const char *end);
static unsigned long generate_hash_secret_salt(void);
static unsigned long generate_hash_secret_salt(XML_Parser parser);
static XML_Bool startParsing(XML_Parser parser);
static XML_Parser
@ -691,11 +698,38 @@ static const XML_Char implicitContext[] = {
};
static unsigned long
generate_hash_secret_salt(void)
gather_time_entropy(void)
{
unsigned int seed = time(NULL) % UINT_MAX;
srand(seed);
return rand();
#ifdef WIN32
FILETIME ft;
GetSystemTimeAsFileTime(&ft); /* never fails */
return ft.dwHighDateTime ^ ft.dwLowDateTime;
#else
struct timeval tv;
int gettimeofday_res;
gettimeofday_res = gettimeofday(&tv, NULL);
assert (gettimeofday_res == 0);
/* Microseconds time is <20 bits entropy */
return tv.tv_usec;
#endif
}
static unsigned long
generate_hash_secret_salt(XML_Parser parser)
{
/* Process ID is 0 bits entropy if attacker has local access
* XML_Parser address is few bits of entropy if attacker has local access */
const unsigned long entropy =
gather_time_entropy() ^ getpid() ^ (unsigned long)parser;
/* Factors are 2^31-1 and 2^61-1 (Mersenne primes M31 and M61) */
if (sizeof(unsigned long) == 4) {
return entropy * 2147483647;
} else {
return entropy * (unsigned long)2305843009213693951;
}
}
static XML_Bool /* only valid for root parser */
@ -703,7 +737,7 @@ startParsing(XML_Parser parser)
{
/* hash functions must be initialized before setContext() is called */
if (hash_secret_salt == 0)
hash_secret_salt = generate_hash_secret_salt();
hash_secret_salt = generate_hash_secret_salt(parser);
if (ns) {
/* implicit context only set for root parser, since child
parsers (i.e. external entity parsers) will inherit it
@ -1695,15 +1729,15 @@ XML_GetBuffer(XML_Parser parser, int len)
if (len > bufferLim - bufferEnd) {
#ifdef XML_CONTEXT_BYTES
int keep;
#endif
int neededSize = len + (int)(bufferEnd - bufferPtr);
#endif /* defined XML_CONTEXT_BYTES */
/* Do not invoke signed arithmetic overflow: */
int neededSize = (int) ((unsigned)len + (unsigned)(bufferEnd - bufferPtr));
if (neededSize < 0) {
errorCode = XML_ERROR_NO_MEMORY;
return NULL;
}
#ifdef XML_CONTEXT_BYTES
keep = (int)(bufferPtr - buffer);
if (keep > XML_CONTEXT_BYTES)
keep = XML_CONTEXT_BYTES;
neededSize += keep;
@ -1728,7 +1762,8 @@ XML_GetBuffer(XML_Parser parser, int len)
if (bufferSize == 0)
bufferSize = INIT_BUFFER_SIZE;
do {
bufferSize *= 2;
/* Do not invoke signed arithmetic overflow: */
bufferSize = (int) (2U * (unsigned) bufferSize);
} while (bufferSize < neededSize && bufferSize > 0);
if (bufferSize <= 0) {
errorCode = XML_ERROR_NO_MEMORY;
@ -1855,7 +1890,7 @@ XML_Index XMLCALL
XML_GetCurrentByteIndex(XML_Parser parser)
{
if (eventPtr)
return parseEndByteIndex - (parseEndPtr - eventPtr);
return (XML_Index)(parseEndByteIndex - (parseEndPtr - eventPtr));
return -1;
}
@ -2429,11 +2464,11 @@ doContent(XML_Parser parser,
for (;;) {
int bufSize;
int convLen;
XmlConvert(enc,
const enum XML_Convert_Result convert_res = XmlConvert(enc,
&fromPtr, rawNameEnd,
(ICHAR **)&toPtr, (ICHAR *)tag->bufEnd - 1);
convLen = (int)(toPtr - (XML_Char *)tag->buf);
if (fromPtr == rawNameEnd) {
if ((convert_res == XML_CONVERT_COMPLETED) || (convert_res == XML_CONVERT_INPUT_INCOMPLETE)) {
tag->name.strLen = convLen;
break;
}
@ -2654,11 +2689,11 @@ doContent(XML_Parser parser,
if (MUST_CONVERT(enc, s)) {
for (;;) {
ICHAR *dataPtr = (ICHAR *)dataBuf;
XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
const enum XML_Convert_Result convert_res = XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
*eventEndPP = s;
charDataHandler(handlerArg, dataBuf,
(int)(dataPtr - (ICHAR *)dataBuf));
if (s == next)
if ((convert_res == XML_CONVERT_COMPLETED) || (convert_res == XML_CONVERT_INPUT_INCOMPLETE))
break;
*eventPP = s;
}
@ -3264,11 +3299,11 @@ doCdataSection(XML_Parser parser,
if (MUST_CONVERT(enc, s)) {
for (;;) {
ICHAR *dataPtr = (ICHAR *)dataBuf;
XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
const enum XML_Convert_Result convert_res = XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
*eventEndPP = next;
charDataHandler(handlerArg, dataBuf,
(int)(dataPtr - (ICHAR *)dataBuf));
if (s == next)
if ((convert_res == XML_CONVERT_COMPLETED) || (convert_res == XML_CONVERT_INPUT_INCOMPLETE))
break;
*eventPP = s;
}
@ -4927,9 +4962,9 @@ internalEntityProcessor(XML_Parser parser,
static enum XML_Error PTRCALL
errorProcessor(XML_Parser parser,
const char *s,
const char *end,
const char **nextPtr)
const char *UNUSED_P(s),
const char *UNUSED_P(end),
const char **UNUSED_P(nextPtr))
{
return errorCode;
}
@ -5345,6 +5380,7 @@ reportDefault(XML_Parser parser, const ENCODING *enc,
const char *s, const char *end)
{
if (MUST_CONVERT(enc, s)) {
enum XML_Convert_Result convert_res;
const char **eventPP;
const char **eventEndPP;
if (enc == encoding) {
@ -5357,11 +5393,11 @@ reportDefault(XML_Parser parser, const ENCODING *enc,
}
do {
ICHAR *dataPtr = (ICHAR *)dataBuf;
XmlConvert(enc, &s, end, &dataPtr, (ICHAR *)dataBufEnd);
convert_res = XmlConvert(enc, &s, end, &dataPtr, (ICHAR *)dataBufEnd);
*eventEndPP = s;
defaultHandler(handlerArg, dataBuf, (int)(dataPtr - (ICHAR *)dataBuf));
*eventPP = s;
} while (s != end);
} while ((convert_res != XML_CONVERT_COMPLETED) && (convert_res != XML_CONVERT_INPUT_INCOMPLETE));
}
else
defaultHandler(handlerArg, (XML_Char *)s, (int)((XML_Char *)end - (XML_Char *)s));
@ -6166,8 +6202,8 @@ poolAppend(STRING_POOL *pool, const ENCODING *enc,
if (!pool->ptr && !poolGrow(pool))
return NULL;
for (;;) {
XmlConvert(enc, &ptr, end, (ICHAR **)&(pool->ptr), (ICHAR *)pool->end);
if (ptr == end)
const enum XML_Convert_Result convert_res = XmlConvert(enc, &ptr, end, (ICHAR **)&(pool->ptr), (ICHAR *)pool->end);
if ((convert_res == XML_CONVERT_COMPLETED) || (convert_res == XML_CONVERT_INPUT_INCOMPLETE))
break;
if (!poolGrow(pool))
return NULL;
@ -6251,8 +6287,13 @@ poolGrow(STRING_POOL *pool)
}
}
if (pool->blocks && pool->start == pool->blocks->s) {
int blockSize = (int)(pool->end - pool->start)*2;
BLOCK *temp = (BLOCK *)
BLOCK *temp;
int blockSize = (int)((unsigned)(pool->end - pool->start)*2U);
if (blockSize < 0)
return XML_FALSE;
temp = (BLOCK *)
pool->mem->realloc_fcn(pool->blocks,
(offsetof(BLOCK, s)
+ blockSize * sizeof(XML_Char)));
@ -6267,6 +6308,10 @@ poolGrow(STRING_POOL *pool)
else {
BLOCK *tem;
int blockSize = (int)(pool->end - pool->start);
if (blockSize < 0)
return XML_FALSE;
if (blockSize < INIT_BLOCK_SIZE)
blockSize = INIT_BLOCK_SIZE;
else

224
Modules/expat/xmlrole.c
View File

@ -4,7 +4,7 @@
#include <stddef.h>
#ifdef COMPILED_FROM_DSP
#ifdef WIN32
#include "winconfig.h"
#elif defined(MACOS_CLASSIC)
#include "macconfig.h"
@ -16,7 +16,7 @@
#ifdef HAVE_EXPAT_CONFIG_H
#include <expat_config.h>
#endif
#endif /* ndef COMPILED_FROM_DSP */
#endif /* ndef WIN32 */
#include "expat_external.h"
#include "internal.h"
@ -195,9 +195,9 @@ prolog1(PROLOG_STATE *state,
static int PTRCALL
prolog2(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -216,9 +216,9 @@ prolog2(PROLOG_STATE *state,
static int PTRCALL
doctype0(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -264,9 +264,9 @@ doctype1(PROLOG_STATE *state,
static int PTRCALL
doctype2(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -281,9 +281,9 @@ doctype2(PROLOG_STATE *state,
static int PTRCALL
doctype3(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -298,9 +298,9 @@ doctype3(PROLOG_STATE *state,
static int PTRCALL
doctype4(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -318,9 +318,9 @@ doctype4(PROLOG_STATE *state,
static int PTRCALL
doctype5(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -437,9 +437,9 @@ externalSubset1(PROLOG_STATE *state,
static int PTRCALL
entity0(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -457,9 +457,9 @@ entity0(PROLOG_STATE *state,
static int PTRCALL
entity1(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -502,9 +502,9 @@ entity2(PROLOG_STATE *state,
static int PTRCALL
entity3(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -519,9 +519,9 @@ entity3(PROLOG_STATE *state,
static int PTRCALL
entity4(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -559,9 +559,9 @@ entity5(PROLOG_STATE *state,
static int PTRCALL
entity6(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -605,9 +605,9 @@ entity7(PROLOG_STATE *state,
static int PTRCALL
entity8(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -622,9 +622,9 @@ entity8(PROLOG_STATE *state,
static int PTRCALL
entity9(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -639,9 +639,9 @@ entity9(PROLOG_STATE *state,
static int PTRCALL
entity10(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -656,9 +656,9 @@ entity10(PROLOG_STATE *state,
static int PTRCALL
notation0(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -697,9 +697,9 @@ notation1(PROLOG_STATE *state,
static int PTRCALL
notation2(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -714,9 +714,9 @@ notation2(PROLOG_STATE *state,
static int PTRCALL
notation3(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -732,9 +732,9 @@ notation3(PROLOG_STATE *state,
static int PTRCALL
notation4(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -753,9 +753,9 @@ notation4(PROLOG_STATE *state,
static int PTRCALL
attlist0(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -771,9 +771,9 @@ attlist0(PROLOG_STATE *state,
static int PTRCALL
attlist1(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -833,9 +833,9 @@ attlist2(PROLOG_STATE *state,
static int PTRCALL
attlist3(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -852,9 +852,9 @@ attlist3(PROLOG_STATE *state,
static int PTRCALL
attlist4(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -872,9 +872,9 @@ attlist4(PROLOG_STATE *state,
static int PTRCALL
attlist5(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -889,9 +889,9 @@ attlist5(PROLOG_STATE *state,
static int PTRCALL
attlist6(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -906,9 +906,9 @@ attlist6(PROLOG_STATE *state,
static int PTRCALL
attlist7(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -967,9 +967,9 @@ attlist8(PROLOG_STATE *state,
static int PTRCALL
attlist9(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -984,9 +984,9 @@ attlist9(PROLOG_STATE *state,
static int PTRCALL
element0(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1072,9 +1072,9 @@ element2(PROLOG_STATE *state,
static int PTRCALL
element3(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1097,9 +1097,9 @@ element3(PROLOG_STATE *state,
static int PTRCALL
element4(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1115,9 +1115,9 @@ element4(PROLOG_STATE *state,
static int PTRCALL
element5(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1136,9 +1136,9 @@ element5(PROLOG_STATE *state,
static int PTRCALL
element6(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1166,9 +1166,9 @@ element6(PROLOG_STATE *state,
static int PTRCALL
element7(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1240,9 +1240,9 @@ condSect0(PROLOG_STATE *state,
static int PTRCALL
condSect1(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1258,9 +1258,9 @@ condSect1(PROLOG_STATE *state,
static int PTRCALL
condSect2(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1277,9 +1277,9 @@ condSect2(PROLOG_STATE *state,
static int PTRCALL
declClose(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
switch (tok) {
case XML_TOK_PROLOG_S:
@ -1292,11 +1292,11 @@ declClose(PROLOG_STATE *state,
}
static int PTRCALL
error(PROLOG_STATE *state,
int tok,
const char *ptr,
const char *end,
const ENCODING *enc)
error(PROLOG_STATE *UNUSED_P(state),
int UNUSED_P(tok),
const char *UNUSED_P(ptr),
const char *UNUSED_P(end),
const ENCODING *UNUSED_P(enc))
{
return XML_ROLE_NONE;
}

230
Modules/expat/xmltok.c
View File

@ -4,7 +4,7 @@
#include <stddef.h>
#ifdef COMPILED_FROM_DSP
#ifdef WIN32
#include "winconfig.h"
#elif defined(MACOS_CLASSIC)
#include "macconfig.h"
@ -16,7 +16,7 @@
#ifdef HAVE_EXPAT_CONFIG_H
#include <expat_config.h>
#endif
#endif /* ndef COMPILED_FROM_DSP */
#endif /* ndef WIN32 */
#include "expat_external.h"
#include "internal.h"
@ -46,7 +46,7 @@
#define VTABLE VTABLE1, PREFIX(toUtf8), PREFIX(toUtf16)
#define UCS2_GET_NAMING(pages, hi, lo) \
(namingBitmap[(pages[hi] << 3) + ((lo) >> 5)] & (1 << ((lo) & 0x1F)))
(namingBitmap[(pages[hi] << 3) + ((lo) >> 5)] & (1u << ((lo) & 0x1F)))
/* A 2 byte UTF-8 representation splits the characters 11 bits between
the bottom 5 and 6 bits of the bytes. We need 8 bits to index into
@ -56,7 +56,7 @@
(namingBitmap[((pages)[(((byte)[0]) >> 2) & 7] << 3) \
+ ((((byte)[0]) & 3) << 1) \
+ ((((byte)[1]) >> 5) & 1)] \
& (1 << (((byte)[1]) & 0x1F)))
& (1u << (((byte)[1]) & 0x1F)))
/* A 3 byte UTF-8 representation splits the characters 16 bits between
the bottom 4, 6 and 6 bits of the bytes. We need 8 bits to index
@ -69,7 +69,7 @@
<< 3) \
+ ((((byte)[1]) & 3) << 1) \
+ ((((byte)[2]) >> 5) & 1)] \
& (1 << (((byte)[2]) & 0x1F)))
& (1u << (((byte)[2]) & 0x1F)))
#define UTF8_GET_NAMING(pages, p, n) \
((n) == 2 \
@ -122,19 +122,19 @@
((*p) == 0xF4 ? (p)[1] > 0x8F : ((p)[1] & 0xC0) == 0xC0)))
static int PTRFASTCALL
isNever(const ENCODING *enc, const char *p)
isNever(const ENCODING *UNUSED_P(enc), const char *UNUSED_P(p))
{
return 0;
}
static int PTRFASTCALL
utf8_isName2(const ENCODING *enc, const char *p)
utf8_isName2(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_GET_NAMING2(namePages, (const unsigned char *)p);
}
static int PTRFASTCALL
utf8_isName3(const ENCODING *enc, const char *p)
utf8_isName3(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_GET_NAMING3(namePages, (const unsigned char *)p);
}
@ -142,13 +142,13 @@ utf8_isName3(const ENCODING *enc, const char *p)
#define utf8_isName4 isNever
static int PTRFASTCALL
utf8_isNmstrt2(const ENCODING *enc, const char *p)
utf8_isNmstrt2(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_GET_NAMING2(nmstrtPages, (const unsigned char *)p);
}
static int PTRFASTCALL
utf8_isNmstrt3(const ENCODING *enc, const char *p)
utf8_isNmstrt3(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_GET_NAMING3(nmstrtPages, (const unsigned char *)p);
}
@ -156,19 +156,19 @@ utf8_isNmstrt3(const ENCODING *enc, const char *p)
#define utf8_isNmstrt4 isNever
static int PTRFASTCALL
utf8_isInvalid2(const ENCODING *enc, const char *p)
utf8_isInvalid2(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_INVALID2((const unsigned char *)p);
}
static int PTRFASTCALL
utf8_isInvalid3(const ENCODING *enc, const char *p)
utf8_isInvalid3(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_INVALID3((const unsigned char *)p);
}
static int PTRFASTCALL
utf8_isInvalid4(const ENCODING *enc, const char *p)
utf8_isInvalid4(const ENCODING *UNUSED_P(enc), const char *p)
{
return UTF8_INVALID4((const unsigned char *)p);
}
@ -222,6 +222,17 @@ struct normal_encoding {
E ## isInvalid3, \
E ## isInvalid4
#define NULL_VTABLE \
/* isName2 */ NULL, \
/* isName3 */ NULL, \
/* isName4 */ NULL, \
/* isNmstrt2 */ NULL, \
/* isNmstrt3 */ NULL, \
/* isNmstrt4 */ NULL, \
/* isInvalid2 */ NULL, \
/* isInvalid3 */ NULL, \
/* isInvalid4 */ NULL
static int FASTCALL checkCharRefNumber(int);
#include "xmltok_impl.h"
@ -318,39 +329,89 @@ enum { /* UTF8_cvalN is value of masked first byte of N byte sequence */
UTF8_cval4 = 0xf0
};
static void PTRCALL
utf8_toUtf8(const ENCODING *enc,
void
align_limit_to_full_utf8_characters(const char * from, const char ** fromLimRef)
{
const char * fromLim = *fromLimRef;
size_t walked = 0;
for (; fromLim > from; fromLim--, walked++) {
const unsigned char prev = (unsigned char)fromLim[-1];
if ((prev & 0xf8u) == 0xf0u) { /* 4-byte character, lead by 0b11110xxx byte */
if (walked + 1 >= 4) {
fromLim += 4 - 1;
break;
} else {
walked = 0;
}
} else if ((prev & 0xf0u) == 0xe0u) { /* 3-byte character, lead by 0b1110xxxx byte */
if (walked + 1 >= 3) {
fromLim += 3 - 1;
break;
} else {
walked = 0;
}
} else if ((prev & 0xe0u) == 0xc0u) { /* 2-byte character, lead by 0b110xxxxx byte */
if (walked + 1 >= 2) {
fromLim += 2 - 1;
break;
} else {
walked = 0;
}
} else if ((prev & 0x80u) == 0x00u) { /* 1-byte character, matching 0b0xxxxxxx */
break;
}
}
*fromLimRef = fromLim;
}
static enum XML_Convert_Result PTRCALL
utf8_toUtf8(const ENCODING *UNUSED_P(enc),
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
{
enum XML_Convert_Result res = XML_CONVERT_COMPLETED;
char *to;
const char *from;
if (fromLim - *fromP > toLim - *toP) {
/* Avoid copying partial characters. */
for (fromLim = *fromP + (toLim - *toP); fromLim > *fromP; fromLim--)
if (((unsigned char)fromLim[-1] & 0xc0) != 0x80)
break;
res = XML_CONVERT_OUTPUT_EXHAUSTED;
fromLim = *fromP + (toLim - *toP);
align_limit_to_full_utf8_characters(*fromP, &fromLim);
}
for (to = *toP, from = *fromP; from != fromLim; from++, to++)
for (to = *toP, from = *fromP; (from < fromLim) && (to < toLim); from++, to++)
*to = *from;
*fromP = from;
*toP = to;
if ((to == toLim) && (from < fromLim))
return XML_CONVERT_OUTPUT_EXHAUSTED;
else
return res;
}
static void PTRCALL
static enum XML_Convert_Result PTRCALL
utf8_toUtf16(const ENCODING *enc,
const char **fromP, const char *fromLim,
unsigned short **toP, const unsigned short *toLim)
{
enum XML_Convert_Result res = XML_CONVERT_COMPLETED;
unsigned short *to = *toP;
const char *from = *fromP;
while (from != fromLim && to != toLim) {
while (from < fromLim && to < toLim) {
switch (((struct normal_encoding *)enc)->type[(unsigned char)*from]) {
case BT_LEAD2:
if (fromLim - from < 2) {
res = XML_CONVERT_INPUT_INCOMPLETE;
break;
}
*to++ = (unsigned short)(((from[0] & 0x1f) << 6) | (from[1] & 0x3f));
from += 2;
break;
case BT_LEAD3:
if (fromLim - from < 3) {
res = XML_CONVERT_INPUT_INCOMPLETE;
break;
}
*to++ = (unsigned short)(((from[0] & 0xf) << 12)
| ((from[1] & 0x3f) << 6) | (from[2] & 0x3f));
from += 3;
@ -358,8 +419,14 @@ utf8_toUtf16(const ENCODING *enc,
case BT_LEAD4:
{
unsigned long n;
if (to + 1 == toLim)
if (toLim - to < 2) {
res = XML_CONVERT_OUTPUT_EXHAUSTED;
goto after;
}
if (fromLim - from < 4) {
res = XML_CONVERT_INPUT_INCOMPLETE;
goto after;
}
n = ((from[0] & 0x7) << 18) | ((from[1] & 0x3f) << 12)
| ((from[2] & 0x3f) << 6) | (from[3] & 0x3f);
n -= 0x10000;
@ -377,6 +444,7 @@ utf8_toUtf16(const ENCODING *enc,
after:
*fromP = from;
*toP = to;
return res;
}
#ifdef XML_NS
@ -425,38 +493,43 @@ static const struct normal_encoding internal_utf8_encoding = {
STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
};
static void PTRCALL
latin1_toUtf8(const ENCODING *enc,
static enum XML_Convert_Result PTRCALL
latin1_toUtf8(const ENCODING *UNUSED_P(enc),
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
{
for (;;) {
unsigned char c;
if (*fromP == fromLim)
break;
return XML_CONVERT_COMPLETED;
c = (unsigned char)**fromP;
if (c & 0x80) {
if (toLim - *toP < 2)
break;
return XML_CONVERT_OUTPUT_EXHAUSTED;
*(*toP)++ = (char)((c >> 6) | UTF8_cval2);
*(*toP)++ = (char)((c & 0x3f) | 0x80);
(*fromP)++;
}
else {
if (*toP == toLim)
break;
return XML_CONVERT_OUTPUT_EXHAUSTED;
*(*toP)++ = *(*fromP)++;
}
}
}
static void PTRCALL
latin1_toUtf16(const ENCODING *enc,
static enum XML_Convert_Result PTRCALL
latin1_toUtf16(const ENCODING *UNUSED_P(enc),
const char **fromP, const char *fromLim,
unsigned short **toP, const unsigned short *toLim)
{
while (*fromP != fromLim && *toP != toLim)
while (*fromP < fromLim && *toP < toLim)
*(*toP)++ = (unsigned char)*(*fromP)++;
if ((*toP == toLim) && (*fromP < fromLim))
return XML_CONVERT_OUTPUT_EXHAUSTED;
else
return XML_CONVERT_COMPLETED;
}
#ifdef XML_NS
@ -467,7 +540,7 @@ static const struct normal_encoding latin1_encoding_ns = {
#include "asciitab.h"
#include "latin1tab.h"
},
STANDARD_VTABLE(sb_)
STANDARD_VTABLE(sb_) NULL_VTABLE
};
#endif
@ -480,16 +553,21 @@ static const struct normal_encoding latin1_encoding = {
#undef BT_COLON
#include "latin1tab.h"
},
STANDARD_VTABLE(sb_)
STANDARD_VTABLE(sb_) NULL_VTABLE
};
static void PTRCALL
ascii_toUtf8(const ENCODING *enc,
static enum XML_Convert_Result PTRCALL
ascii_toUtf8(const ENCODING *UNUSED_P(enc),
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
{
while (*fromP != fromLim && *toP != toLim)
while (*fromP < fromLim && *toP < toLim)
*(*toP)++ = *(*fromP)++;
if ((*toP == toLim) && (*fromP < fromLim))
return XML_CONVERT_OUTPUT_EXHAUSTED;
else
return XML_CONVERT_COMPLETED;
}
#ifdef XML_NS
@ -500,7 +578,7 @@ static const struct normal_encoding ascii_encoding_ns = {
#include "asciitab.h"
/* BT_NONXML == 0 */
},
STANDARD_VTABLE(sb_)
STANDARD_VTABLE(sb_) NULL_VTABLE
};
#endif
@ -513,7 +591,7 @@ static const struct normal_encoding ascii_encoding = {
#undef BT_COLON
/* BT_NONXML == 0 */
},
STANDARD_VTABLE(sb_)
STANDARD_VTABLE(sb_) NULL_VTABLE
};
static int PTRFASTCALL
@ -536,13 +614,14 @@ unicode_byte_type(char hi, char lo)
}
#define DEFINE_UTF16_TO_UTF8(E) \
static void PTRCALL \
E ## toUtf8(const ENCODING *enc, \
static enum XML_Convert_Result PTRCALL \
E ## toUtf8(const ENCODING *UNUSED_P(enc), \
const char **fromP, const char *fromLim, \
char **toP, const char *toLim) \
{ \
const char *from; \
for (from = *fromP; from != fromLim; from += 2) { \
const char *from = *fromP; \
fromLim = from + (((fromLim - from) >> 1) << 1); /* shrink to even */ \
for (; from < fromLim; from += 2) { \
int plane; \
unsigned char lo2; \
unsigned char lo = GET_LO(from); \
@ -552,7 +631,7 @@ E ## toUtf8(const ENCODING *enc, \
if (lo < 0x80) { \
if (*toP == toLim) { \
*fromP = from; \
return; \
return XML_CONVERT_OUTPUT_EXHAUSTED; \
} \
*(*toP)++ = lo; \
break; \
@ -562,7 +641,7 @@ E ## toUtf8(const ENCODING *enc, \
case 0x4: case 0x5: case 0x6: case 0x7: \
if (toLim - *toP < 2) { \
*fromP = from; \
return; \
return XML_CONVERT_OUTPUT_EXHAUSTED; \
} \
*(*toP)++ = ((lo >> 6) | (hi << 2) | UTF8_cval2); \
*(*toP)++ = ((lo & 0x3f) | 0x80); \
@ -570,7 +649,7 @@ E ## toUtf8(const ENCODING *enc, \
default: \
if (toLim - *toP < 3) { \
*fromP = from; \
return; \
return XML_CONVERT_OUTPUT_EXHAUSTED; \
} \
/* 16 bits divided 4, 6, 6 amongst 3 bytes */ \
*(*toP)++ = ((hi >> 4) | UTF8_cval3); \
@ -580,7 +659,11 @@ E ## toUtf8(const ENCODING *enc, \
case 0xD8: case 0xD9: case 0xDA: case 0xDB: \
if (toLim - *toP < 4) { \
*fromP = from; \
return; \
return XML_CONVERT_OUTPUT_EXHAUSTED; \
} \
if (fromLim - from < 4) { \
*fromP = from; \
return XML_CONVERT_INPUT_INCOMPLETE; \
} \
plane = (((hi & 0x3) << 2) | ((lo >> 6) & 0x3)) + 1; \
*(*toP)++ = ((plane >> 2) | UTF8_cval4); \
@ -596,20 +679,32 @@ E ## toUtf8(const ENCODING *enc, \
} \
} \
*fromP = from; \
if (from < fromLim) \
return XML_CONVERT_INPUT_INCOMPLETE; \
else \
return XML_CONVERT_COMPLETED; \
}
#define DEFINE_UTF16_TO_UTF16(E) \
static void PTRCALL \
E ## toUtf16(const ENCODING *enc, \
static enum XML_Convert_Result PTRCALL \
E ## toUtf16(const ENCODING *UNUSED_P(enc), \
const char **fromP, const char *fromLim, \
unsigned short **toP, const unsigned short *toLim) \
{ \
enum XML_Convert_Result res = XML_CONVERT_COMPLETED; \
fromLim = *fromP + (((fromLim - *fromP) >> 1) << 1); /* shrink to even */ \
/* Avoid copying first half only of surrogate */ \
if (fromLim - *fromP > ((toLim - *toP) << 1) \
&& (GET_HI(fromLim - 2) & 0xF8) == 0xD8) \
&& (GET_HI(fromLim - 2) & 0xF8) == 0xD8) { \
fromLim -= 2; \
for (; *fromP != fromLim && *toP != toLim; *fromP += 2) \
res = XML_CONVERT_INPUT_INCOMPLETE; \
} \
for (; *fromP < fromLim && *toP < toLim; *fromP += 2) \
*(*toP)++ = (GET_HI(*fromP) << 8) | GET_LO(*fromP); \
if ((*toP == toLim) && (*fromP < fromLim)) \
return XML_CONVERT_OUTPUT_EXHAUSTED; \
else \
return res; \
}
#define SET2(ptr, ch) \
@ -726,7 +821,7 @@ static const struct normal_encoding little2_encoding_ns = {
#include "asciitab.h"
#include "latin1tab.h"
},
STANDARD_VTABLE(little2_)
STANDARD_VTABLE(little2_) NULL_VTABLE
};
#endif
@ -745,7 +840,7 @@ static const struct normal_encoding little2_encoding = {
#undef BT_COLON
#include "latin1tab.h"
},
STANDARD_VTABLE(little2_)
STANDARD_VTABLE(little2_) NULL_VTABLE
};
#if BYTEORDER != 4321
@ -758,7 +853,7 @@ static const struct normal_encoding internal_little2_encoding_ns = {
#include "iasciitab.h"
#include "latin1tab.h"
},
STANDARD_VTABLE(little2_)
STANDARD_VTABLE(little2_) NULL_VTABLE
};
#endif
@ -771,7 +866,7 @@ static const struct normal_encoding internal_little2_encoding = {
#undef BT_COLON
#include "latin1tab.h"
},
STANDARD_VTABLE(little2_)
STANDARD_VTABLE(little2_) NULL_VTABLE
};
#endif
@ -867,7 +962,7 @@ static const struct normal_encoding big2_encoding_ns = {
#include "asciitab.h"
#include "latin1tab.h"
},
STANDARD_VTABLE(big2_)
STANDARD_VTABLE(big2_) NULL_VTABLE
};
#endif
@ -886,7 +981,7 @@ static const struct normal_encoding big2_encoding = {
#undef BT_COLON
#include "latin1tab.h"
},
STANDARD_VTABLE(big2_)
STANDARD_VTABLE(big2_) NULL_VTABLE
};
#if BYTEORDER != 1234
@ -899,7 +994,7 @@ static const struct normal_encoding internal_big2_encoding_ns = {
#include "iasciitab.h"
#include "latin1tab.h"
},
STANDARD_VTABLE(big2_)
STANDARD_VTABLE(big2_) NULL_VTABLE
};
#endif
@ -912,7 +1007,7 @@ static const struct normal_encoding internal_big2_encoding = {
#undef BT_COLON
#include "latin1tab.h"
},
STANDARD_VTABLE(big2_)
STANDARD_VTABLE(big2_) NULL_VTABLE
};
#endif
@ -938,7 +1033,7 @@ streqci(const char *s1, const char *s2)
}
static void PTRCALL
initUpdatePosition(const ENCODING *enc, const char *ptr,
initUpdatePosition(const ENCODING *UNUSED_P(enc), const char *ptr,
const char *end, POSITION *pos)
{
normal_updatePosition(&utf8_encoding.enc, ptr, end, pos);
@ -1288,7 +1383,7 @@ unknown_isInvalid(const ENCODING *enc, const char *p)
return (c & ~0xFFFF) || checkCharRefNumber(c) < 0;
}
static void PTRCALL
static enum XML_Convert_Result PTRCALL
unknown_toUtf8(const ENCODING *enc,
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
@ -1299,21 +1394,21 @@ unknown_toUtf8(const ENCODING *enc,
const char *utf8;
int n;
if (*fromP == fromLim)
break;
return XML_CONVERT_COMPLETED;
utf8 = uenc->utf8[(unsigned char)**fromP];
n = *utf8++;
if (n == 0) {
int c = uenc->convert(uenc->userData, *fromP);
n = XmlUtf8Encode(c, buf);
if (n > toLim - *toP)
break;
return XML_CONVERT_OUTPUT_EXHAUSTED;
utf8 = buf;
*fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP]
- (BT_LEAD2 - 2));
}
else {
if (n > toLim - *toP)
break;
return XML_CONVERT_OUTPUT_EXHAUSTED;
(*fromP)++;
}
do {
@ -1322,13 +1417,13 @@ unknown_toUtf8(const ENCODING *enc,
}
}
static void PTRCALL
static enum XML_Convert_Result PTRCALL
unknown_toUtf16(const ENCODING *enc,
const char **fromP, const char *fromLim,
unsigned short **toP, const unsigned short *toLim)
{
const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
while (*fromP != fromLim && *toP != toLim) {
while (*fromP < fromLim && *toP < toLim) {
unsigned short c = uenc->utf16[(unsigned char)**fromP];
if (c == 0) {
c = (unsigned short)
@ -1340,6 +1435,11 @@ unknown_toUtf16(const ENCODING *enc,
(*fromP)++;
*(*toP)++ = c;
}
if ((*toP == toLim) && (*fromP < fromLim))
return XML_CONVERT_OUTPUT_EXHAUSTED;
else
return XML_CONVERT_COMPLETED;
}
ENCODING *
@ -1503,7 +1603,7 @@ initScan(const ENCODING * const *encodingTable,
{
const ENCODING **encPtr;
if (ptr == end)
if (ptr >= end)
return XML_TOK_NONE;
encPtr = enc->encPtr;
if (ptr + 1 == end) {

10
Modules/expat/xmltok.h
View File

@ -130,6 +130,12 @@ typedef int (PTRCALL *SCANNER)(const ENCODING *,
const char *,
const char **);
enum XML_Convert_Result {
XML_CONVERT_COMPLETED = 0,
XML_CONVERT_INPUT_INCOMPLETE = 1,
XML_CONVERT_OUTPUT_EXHAUSTED = 2 /* and therefore potentially input remaining as well */
};
struct encoding {
SCANNER scanners[XML_N_STATES];
SCANNER literalScanners[XML_N_LITERAL_TYPES];
@ -158,12 +164,12 @@ struct encoding {
const char *ptr,
const char *end,
const char **badPtr);
void (PTRCALL *utf8Convert)(const ENCODING *enc,
enum XML_Convert_Result (PTRCALL *utf8Convert)(const ENCODING *enc,
const char **fromP,
const char *fromLim,
char **toP,
const char *toLim);
void (PTRCALL *utf16Convert)(const ENCODING *enc,
enum XML_Convert_Result (PTRCALL *utf16Convert)(const ENCODING *enc,
const char **fromP,
const char *fromLim,
unsigned short **toP,

226
Modules/expat/xmltok_impl.c
View File

@ -87,27 +87,45 @@
#define PREFIX(ident) ident
#endif
#define HAS_CHARS(enc, ptr, end, count) \
(end - ptr >= count * MINBPC(enc))
#define HAS_CHAR(enc, ptr, end) \
HAS_CHARS(enc, ptr, end, 1)
#define REQUIRE_CHARS(enc, ptr, end, count) \
{ \
if (! HAS_CHARS(enc, ptr, end, count)) { \
return XML_TOK_PARTIAL; \
} \
}
#define REQUIRE_CHAR(enc, ptr, end) \
REQUIRE_CHARS(enc, ptr, end, 1)
/* ptr points to character following "<!-" */
static int PTRCALL
PREFIX(scanComment)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
if (ptr != end) {
if (HAS_CHAR(enc, ptr, end)) {
if (!CHAR_MATCHES(enc, ptr, ASCII_MINUS)) {
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
ptr += MINBPC(enc);
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
INVALID_CASES(ptr, nextTokPtr)
case BT_MINUS:
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_MINUS)) {
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
if (!CHAR_MATCHES(enc, ptr, ASCII_GT)) {
*nextTokPtr = ptr;
return XML_TOK_INVALID;
@ -131,8 +149,7 @@ static int PTRCALL
PREFIX(scanDecl)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
case BT_MINUS:
return PREFIX(scanComment)(enc, ptr + MINBPC(enc), end, nextTokPtr);
@ -147,11 +164,10 @@ PREFIX(scanDecl)(const ENCODING *enc, const char *ptr,
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
case BT_PERCNT:
if (ptr + MINBPC(enc) == end)
return XML_TOK_PARTIAL;
REQUIRE_CHARS(enc, ptr, end, 2);
/* don't allow <!ENTITY% foo "whatever"> */
switch (BYTE_TYPE(enc, ptr + MINBPC(enc))) {
case BT_S: case BT_CR: case BT_LF: case BT_PERCNT:
@ -175,7 +191,7 @@ PREFIX(scanDecl)(const ENCODING *enc, const char *ptr,
}
static int PTRCALL
PREFIX(checkPiTarget)(const ENCODING *enc, const char *ptr,
PREFIX(checkPiTarget)(const ENCODING *UNUSED_P(enc), const char *ptr,
const char *end, int *tokPtr)
{
int upper = 0;
@ -225,15 +241,14 @@ PREFIX(scanPi)(const ENCODING *enc, const char *ptr,
{
int tok;
const char *target = ptr;
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
default:
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
case BT_S: case BT_CR: case BT_LF:
@ -242,13 +257,12 @@ PREFIX(scanPi)(const ENCODING *enc, const char *ptr,
return XML_TOK_INVALID;
}
ptr += MINBPC(enc);
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
INVALID_CASES(ptr, nextTokPtr)
case BT_QUEST:
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_GT)) {
*nextTokPtr = ptr + MINBPC(enc);
return tok;
@ -266,8 +280,7 @@ PREFIX(scanPi)(const ENCODING *enc, const char *ptr,
return XML_TOK_INVALID;
}
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_GT)) {
*nextTokPtr = ptr + MINBPC(enc);
return tok;
@ -282,15 +295,14 @@ PREFIX(scanPi)(const ENCODING *enc, const char *ptr,
}
static int PTRCALL
PREFIX(scanCdataSection)(const ENCODING *enc, const char *ptr,
PREFIX(scanCdataSection)(const ENCODING *UNUSED_P(enc), const char *ptr,
const char *end, const char **nextTokPtr)
{
static const char CDATA_LSQB[] = { ASCII_C, ASCII_D, ASCII_A,
ASCII_T, ASCII_A, ASCII_LSQB };
int i;
/* CDATA[ */
if (end - ptr < 6 * MINBPC(enc))
return XML_TOK_PARTIAL;
REQUIRE_CHARS(enc, ptr, end, 6);
for (i = 0; i < 6; i++, ptr += MINBPC(enc)) {
if (!CHAR_MATCHES(enc, ptr, CDATA_LSQB[i])) {
*nextTokPtr = ptr;
@ -305,7 +317,7 @@ static int PTRCALL
PREFIX(cdataSectionTok)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
if (ptr == end)
if (ptr >= end)
return XML_TOK_NONE;
if (MINBPC(enc) > 1) {
size_t n = end - ptr;
@ -319,13 +331,11 @@ PREFIX(cdataSectionTok)(const ENCODING *enc, const char *ptr,
switch (BYTE_TYPE(enc, ptr)) {
case BT_RSQB:
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (!CHAR_MATCHES(enc, ptr, ASCII_RSQB))
break;
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (!CHAR_MATCHES(enc, ptr, ASCII_GT)) {
ptr -= MINBPC(enc);
break;
@ -334,8 +344,7 @@ PREFIX(cdataSectionTok)(const ENCODING *enc, const char *ptr,
return XML_TOK_CDATA_SECT_CLOSE;
case BT_CR:
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (BYTE_TYPE(enc, ptr) == BT_LF)
ptr += MINBPC(enc);
*nextTokPtr = ptr;
@ -348,7 +357,7 @@ PREFIX(cdataSectionTok)(const ENCODING *enc, const char *ptr,
ptr += MINBPC(enc);
break;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: \
@ -383,19 +392,18 @@ static int PTRCALL
PREFIX(scanEndTag)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
default:
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
case BT_S: case BT_CR: case BT_LF:
for (ptr += MINBPC(enc); ptr != end; ptr += MINBPC(enc)) {
for (ptr += MINBPC(enc); HAS_CHAR(enc, ptr, end); ptr += MINBPC(enc)) {
switch (BYTE_TYPE(enc, ptr)) {
case BT_S: case BT_CR: case BT_LF:
break;
@ -432,7 +440,7 @@ static int PTRCALL
PREFIX(scanHexCharRef)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
if (ptr != end) {
if (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
case BT_DIGIT:
case BT_HEX:
@ -441,7 +449,7 @@ PREFIX(scanHexCharRef)(const ENCODING *enc, const char *ptr,
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
for (ptr += MINBPC(enc); ptr != end; ptr += MINBPC(enc)) {
for (ptr += MINBPC(enc); HAS_CHAR(enc, ptr, end); ptr += MINBPC(enc)) {
switch (BYTE_TYPE(enc, ptr)) {
case BT_DIGIT:
case BT_HEX:
@ -464,7 +472,7 @@ static int PTRCALL
PREFIX(scanCharRef)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
if (ptr != end) {
if (HAS_CHAR(enc, ptr, end)) {
if (CHAR_MATCHES(enc, ptr, ASCII_x))
return PREFIX(scanHexCharRef)(enc, ptr + MINBPC(enc), end, nextTokPtr);
switch (BYTE_TYPE(enc, ptr)) {
@ -474,7 +482,7 @@ PREFIX(scanCharRef)(const ENCODING *enc, const char *ptr,
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
for (ptr += MINBPC(enc); ptr != end; ptr += MINBPC(enc)) {
for (ptr += MINBPC(enc); HAS_CHAR(enc, ptr, end); ptr += MINBPC(enc)) {
switch (BYTE_TYPE(enc, ptr)) {
case BT_DIGIT:
break;
@ -496,8 +504,7 @@ static int PTRCALL
PREFIX(scanRef)(const ENCODING *enc, const char *ptr, const char *end,
const char **nextTokPtr)
{
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
case BT_NUM:
@ -506,7 +513,7 @@ PREFIX(scanRef)(const ENCODING *enc, const char *ptr, const char *end,
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
case BT_SEMI:
@ -529,7 +536,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
#ifdef XML_NS
int hadColon = 0;
#endif
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
#ifdef XML_NS
@ -540,8 +547,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
}
hadColon = 1;
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
default:
@ -555,8 +561,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
int t;
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
t = BYTE_TYPE(enc, ptr);
if (t == BT_EQUALS)
break;
@ -579,8 +584,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
#endif
for (;;) {
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
open = BYTE_TYPE(enc, ptr);
if (open == BT_QUOT || open == BT_APOS)
break;
@ -598,8 +602,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
/* in attribute value */
for (;;) {
int t;
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
t = BYTE_TYPE(enc, ptr);
if (t == open)
break;
@ -624,8 +627,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
}
}
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
case BT_S:
case BT_CR:
@ -642,8 +644,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
/* ptr points to closing quote */
for (;;) {
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
case BT_S: case BT_CR: case BT_LF:
@ -655,8 +656,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
case BT_SOL:
sol:
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (!CHAR_MATCHES(enc, ptr, ASCII_GT)) {
*nextTokPtr = ptr;
return XML_TOK_INVALID;
@ -688,13 +688,12 @@ PREFIX(scanLt)(const ENCODING *enc, const char *ptr, const char *end,
#ifdef XML_NS
int hadColon;
#endif
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
case BT_EXCL:
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
case BT_MINUS:
return PREFIX(scanComment)(enc, ptr + MINBPC(enc), end, nextTokPtr);
@ -716,7 +715,7 @@ PREFIX(scanLt)(const ENCODING *enc, const char *ptr, const char *end,
hadColon = 0;
#endif
/* we have a start-tag */
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
#ifdef XML_NS
@ -727,8 +726,7 @@ PREFIX(scanLt)(const ENCODING *enc, const char *ptr, const char *end,
}
hadColon = 1;
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
default:
@ -740,7 +738,7 @@ PREFIX(scanLt)(const ENCODING *enc, const char *ptr, const char *end,
case BT_S: case BT_CR: case BT_LF:
{
ptr += MINBPC(enc);
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
case BT_GT:
@ -765,8 +763,7 @@ PREFIX(scanLt)(const ENCODING *enc, const char *ptr, const char *end,
case BT_SOL:
sol:
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
if (!CHAR_MATCHES(enc, ptr, ASCII_GT)) {
*nextTokPtr = ptr;
return XML_TOK_INVALID;
@ -785,7 +782,7 @@ static int PTRCALL
PREFIX(contentTok)(const ENCODING *enc, const char *ptr, const char *end,
const char **nextTokPtr)
{
if (ptr == end)
if (ptr >= end)
return XML_TOK_NONE;
if (MINBPC(enc) > 1) {
size_t n = end - ptr;
@ -803,7 +800,7 @@ PREFIX(contentTok)(const ENCODING *enc, const char *ptr, const char *end,
return PREFIX(scanRef)(enc, ptr + MINBPC(enc), end, nextTokPtr);
case BT_CR:
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_TRAILING_CR;
if (BYTE_TYPE(enc, ptr) == BT_LF)
ptr += MINBPC(enc);
@ -814,12 +811,12 @@ PREFIX(contentTok)(const ENCODING *enc, const char *ptr, const char *end,
return XML_TOK_DATA_NEWLINE;
case BT_RSQB:
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_TRAILING_RSQB;
if (!CHAR_MATCHES(enc, ptr, ASCII_RSQB))
break;
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_TRAILING_RSQB;
if (!CHAR_MATCHES(enc, ptr, ASCII_GT)) {
ptr -= MINBPC(enc);
@ -832,7 +829,7 @@ PREFIX(contentTok)(const ENCODING *enc, const char *ptr, const char *end,
ptr += MINBPC(enc);
break;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: \
@ -845,12 +842,12 @@ PREFIX(contentTok)(const ENCODING *enc, const char *ptr, const char *end,
LEAD_CASE(2) LEAD_CASE(3) LEAD_CASE(4)
#undef LEAD_CASE
case BT_RSQB:
if (ptr + MINBPC(enc) != end) {
if (HAS_CHARS(enc, ptr, end, 2)) {
if (!CHAR_MATCHES(enc, ptr + MINBPC(enc), ASCII_RSQB)) {
ptr += MINBPC(enc);
break;
}
if (ptr + 2*MINBPC(enc) != end) {
if (HAS_CHARS(enc, ptr, end, 3)) {
if (!CHAR_MATCHES(enc, ptr + 2*MINBPC(enc), ASCII_GT)) {
ptr += MINBPC(enc);
break;
@ -884,8 +881,7 @@ static int PTRCALL
PREFIX(scanPercent)(const ENCODING *enc, const char *ptr, const char *end,
const char **nextTokPtr)
{
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
case BT_S: case BT_LF: case BT_CR: case BT_PERCNT:
@ -895,7 +891,7 @@ PREFIX(scanPercent)(const ENCODING *enc, const char *ptr, const char *end,
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
case BT_SEMI:
@ -913,15 +909,14 @@ static int PTRCALL
PREFIX(scanPoundName)(const ENCODING *enc, const char *ptr, const char *end,
const char **nextTokPtr)
{
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
default:
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
case BT_CR: case BT_LF: case BT_S:
@ -941,7 +936,7 @@ PREFIX(scanLit)(int open, const ENCODING *enc,
const char *ptr, const char *end,
const char **nextTokPtr)
{
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
int t = BYTE_TYPE(enc, ptr);
switch (t) {
INVALID_CASES(ptr, nextTokPtr)
@ -950,7 +945,7 @@ PREFIX(scanLit)(int open, const ENCODING *enc,
ptr += MINBPC(enc);
if (t != open)
break;
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return -XML_TOK_LITERAL;
*nextTokPtr = ptr;
switch (BYTE_TYPE(enc, ptr)) {
@ -973,7 +968,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
const char **nextTokPtr)
{
int tok;
if (ptr == end)
if (ptr >= end)
return XML_TOK_NONE;
if (MINBPC(enc) > 1) {
size_t n = end - ptr;
@ -992,8 +987,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
case BT_LT:
{
ptr += MINBPC(enc);
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
switch (BYTE_TYPE(enc, ptr)) {
case BT_EXCL:
return PREFIX(scanDecl)(enc, ptr + MINBPC(enc), end, nextTokPtr);
@ -1021,7 +1015,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
case BT_S: case BT_LF:
for (;;) {
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
break;
switch (BYTE_TYPE(enc, ptr)) {
case BT_S: case BT_LF:
@ -1048,11 +1042,10 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
return XML_TOK_OPEN_BRACKET;
case BT_RSQB:
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return -XML_TOK_CLOSE_BRACKET;
if (CHAR_MATCHES(enc, ptr, ASCII_RSQB)) {
if (ptr + MINBPC(enc) == end)
return XML_TOK_PARTIAL;
REQUIRE_CHARS(enc, ptr, end, 2);
if (CHAR_MATCHES(enc, ptr + MINBPC(enc), ASCII_GT)) {
*nextTokPtr = ptr + 2*MINBPC(enc);
return XML_TOK_COND_SECT_CLOSE;
@ -1065,7 +1058,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
return XML_TOK_OPEN_PAREN;
case BT_RPAR:
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return -XML_TOK_CLOSE_PAREN;
switch (BYTE_TYPE(enc, ptr)) {
case BT_AST:
@ -1141,7 +1134,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
*nextTokPtr = ptr;
return XML_TOK_INVALID;
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
case BT_GT: case BT_RPAR: case BT_COMMA:
@ -1154,8 +1147,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
ptr += MINBPC(enc);
switch (tok) {
case XML_TOK_NAME:
if (ptr == end)
return XML_TOK_PARTIAL;
REQUIRE_CHAR(enc, ptr, end);
tok = XML_TOK_PREFIXED_NAME;
switch (BYTE_TYPE(enc, ptr)) {
CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
@ -1204,10 +1196,12 @@ PREFIX(attributeValueTok)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
const char *start;
if (ptr == end)
if (ptr >= end)
return XML_TOK_NONE;
else if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_PARTIAL;
start = ptr;
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: ptr += n; break;
@ -1232,7 +1226,7 @@ PREFIX(attributeValueTok)(const ENCODING *enc, const char *ptr,
case BT_CR:
if (ptr == start) {
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_TRAILING_CR;
if (BYTE_TYPE(enc, ptr) == BT_LF)
ptr += MINBPC(enc);
@ -1262,10 +1256,12 @@ PREFIX(entityValueTok)(const ENCODING *enc, const char *ptr,
const char *end, const char **nextTokPtr)
{
const char *start;
if (ptr == end)
if (ptr >= end)
return XML_TOK_NONE;
else if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_PARTIAL;
start = ptr;
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: ptr += n; break;
@ -1294,7 +1290,7 @@ PREFIX(entityValueTok)(const ENCODING *enc, const char *ptr,
case BT_CR:
if (ptr == start) {
ptr += MINBPC(enc);
if (ptr == end)
if (! HAS_CHAR(enc, ptr, end))
return XML_TOK_TRAILING_CR;
if (BYTE_TYPE(enc, ptr) == BT_LF)
ptr += MINBPC(enc);
@ -1326,15 +1322,15 @@ PREFIX(ignoreSectionTok)(const ENCODING *enc, const char *ptr,
end = ptr + n;
}
}
while (ptr != end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
INVALID_CASES(ptr, nextTokPtr)
case BT_LT:
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_EXCL)) {
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_LSQB)) {
++level;
ptr += MINBPC(enc);
@ -1342,11 +1338,11 @@ PREFIX(ignoreSectionTok)(const ENCODING *enc, const char *ptr,
}
break;
case BT_RSQB:
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_RSQB)) {
if ((ptr += MINBPC(enc)) == end)
return XML_TOK_PARTIAL;
ptr += MINBPC(enc);
REQUIRE_CHAR(enc, ptr, end);
if (CHAR_MATCHES(enc, ptr, ASCII_GT)) {
ptr += MINBPC(enc);
if (level == 0) {
@ -1373,7 +1369,7 @@ PREFIX(isPublicId)(const ENCODING *enc, const char *ptr, const char *end,
{
ptr += MINBPC(enc);
end -= MINBPC(enc);
for (; ptr != end; ptr += MINBPC(enc)) {
for (; HAS_CHAR(enc, ptr, end); ptr += MINBPC(enc)) {
switch (BYTE_TYPE(enc, ptr)) {
case BT_DIGIT:
case BT_HEX:
@ -1521,7 +1517,7 @@ PREFIX(getAtts)(const ENCODING *enc, const char *ptr,
}
static int PTRFASTCALL
PREFIX(charRefNumber)(const ENCODING *enc, const char *ptr)
PREFIX(charRefNumber)(const ENCODING *UNUSED_P(enc), const char *ptr)
{
int result = 0;
/* skip &# */
@ -1565,7 +1561,7 @@ PREFIX(charRefNumber)(const ENCODING *enc, const char *ptr)
}
static int PTRCALL
PREFIX(predefinedEntityName)(const ENCODING *enc, const char *ptr,
PREFIX(predefinedEntityName)(const ENCODING *UNUSED_P(enc), const char *ptr,
const char *end)
{
switch ((end - ptr)/MINBPC(enc)) {
@ -1683,11 +1679,11 @@ PREFIX(sameName)(const ENCODING *enc, const char *ptr1, const char *ptr2)
}
static int PTRCALL
PREFIX(nameMatchesAscii)(const ENCODING *enc, const char *ptr1,
PREFIX(nameMatchesAscii)(const ENCODING *UNUSED_P(enc), const char *ptr1,
const char *end1, const char *ptr2)
{
for (; *ptr2; ptr1 += MINBPC(enc), ptr2++) {
if (ptr1 == end1)
if (end1 - ptr1 < MINBPC(enc))
return 0;
if (!CHAR_MATCHES(enc, ptr1, *ptr2))
return 0;
@ -1744,7 +1740,7 @@ PREFIX(updatePosition)(const ENCODING *enc,
const char *end,
POSITION *pos)
{
while (ptr < end) {
while (HAS_CHAR(enc, ptr, end)) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: \
@ -1760,7 +1756,7 @@ PREFIX(updatePosition)(const ENCODING *enc,
case BT_CR:
pos->lineNumber++;
ptr += MINBPC(enc);
if (ptr != end && BYTE_TYPE(enc, ptr) == BT_LF)
if (HAS_CHAR(enc, ptr, end) && BYTE_TYPE(enc, ptr) == BT_LF)
ptr += MINBPC(enc);
pos->columnNumber = (XML_Size)-1;
break;

6
Modules/pyexpat.c
View File

@ -1188,10 +1188,8 @@ newxmlparseobject(const char *encoding, const char *namespace_separator, PyObjec
Py_DECREF(self);
return NULL;
}
#if XML_COMBINED_VERSION >= 20100 || defined(XML_HAS_SET_HASH_SALT)
/* This feature was added upstream in libexpat 2.1.0. Our expat copy
* has a backport of this feature where we also define XML_HAS_SET_HASH_SALT
* to indicate that we can still use it. */
#if XML_COMBINED_VERSION >= 20100
/* This feature was added upstream in libexpat 2.1.0. */
XML_SetHashSalt(self->itself,
(unsigned long)_Py_HashSecret.expat.hashsalt);
#endif