+++ /dev/null
-From cdfcb1b5c95e93b00ae9e9d25708b4a3bee72c15 Mon Sep 17 00:00:00 2001
-From: Sebastian Pipping <sebastian@pipping.org>
-Date: Mon, 2 May 2016 00:02:44 +0200
-Subject: [PATCH] Address CVE-2016-0718 (/patch/ version 2.2.1)
-
-* Out of bounds memory access when doing text conversion on malformed input
-* Integer overflow related to memory allocation
-
-Reported by Gustavo Grieco
-
-Patch credits go to
-* Christian Heimes
-* Karl Waclawek
-* Gustavo Grieco
-* Sebastian Pipping
-* Pascal Cuoq
-
-Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
----
- lib/xmlparse.c | 34 +++++++++-----
- lib/xmltok.c | 115 +++++++++++++++++++++++++++++++++++-------------
- lib/xmltok.h | 10 ++++-
- lib/xmltok_impl.c | 62 +++++++++++++-------------
- 4 files changed, 146 insertions(+), 75 deletions(-)
-
-diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
-index e308c79..13e080d 100644
---- a/lib/xmlparse.c
-+++ b/lib/xmlparse.c
-@@ -2426,11 +2426,11 @@ 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;
- }
-@@ -2651,11 +2651,11 @@ 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;
- }
-@@ -3261,11 +3261,11 @@ 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;
- }
-@@ -5342,6 +5342,7 @@ 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) {
-@@ -5354,11 +5355,11 @@ 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));
-@@ -6163,8 +6164,8 @@ 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;
-@@ -6248,8 +6249,13 @@ 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)));
-@@ -6264,6 +6270,10 @@ 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
-diff --git a/expat/lib/xmltok.c b/expat/lib/xmltok.c
-index bf09dfc..cb98ce1 100644
---- a/lib/xmltok.c
-+++ b/lib/xmltok.c
-@@ -318,39 +318,55 @@ enum { /* UTF8_cvalN is value of masked first byte of N byte sequence */
- UTF8_cval4 = 0xf0
- };
-
--static void PTRCALL
-+static enum XML_Convert_Result PTRCALL
- utf8_toUtf8(const ENCODING *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. */
-+ res = XML_CONVERT_OUTPUT_EXHAUSTED;
- for (fromLim = *fromP + (toLim - *toP); fromLim > *fromP; fromLim--)
- if (((unsigned char)fromLim[-1] & 0xc0) != 0x80)
- break;
- }
-- 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 +374,14 @@ 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 +399,7 @@ utf8_toUtf16(const ENCODING *enc,
- after:
- *fromP = from;
- *toP = to;
-+ return res;
- }
-
- #ifdef XML_NS
-@@ -425,7 +448,7 @@ static const struct normal_encoding internal_utf8_encoding = {
- STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
- };
-
--static void PTRCALL
-+static enum XML_Convert_Result PTRCALL
- latin1_toUtf8(const ENCODING *enc,
- const char **fromP, const char *fromLim,
- char **toP, const char *toLim)
-@@ -433,30 +456,35 @@ latin1_toUtf8(const ENCODING *enc,
- 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
-+static enum XML_Convert_Result PTRCALL
- latin1_toUtf16(const ENCODING *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
-@@ -483,13 +511,18 @@ static const struct normal_encoding latin1_encoding = {
- STANDARD_VTABLE(sb_)
- };
-
--static void PTRCALL
-+static enum XML_Convert_Result PTRCALL
- ascii_toUtf8(const ENCODING *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
-@@ -536,13 +569,14 @@ unicode_byte_type(char hi, char lo)
- }
-
- #define DEFINE_UTF16_TO_UTF8(E) \
--static void PTRCALL \
-+static enum XML_Convert_Result PTRCALL \
- E ## toUtf8(const ENCODING *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 +586,7 @@ E ## toUtf8(const ENCODING *enc, \
- if (lo < 0x80) { \
- if (*toP == toLim) { \
- *fromP = from; \
-- return; \
-+ return XML_CONVERT_OUTPUT_EXHAUSTED; \
- } \
- *(*toP)++ = lo; \
- break; \
-@@ -562,7 +596,7 @@ 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 +604,7 @@ 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 +614,11 @@ 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 +634,32 @@ 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 \
-+static enum XML_Convert_Result PTRCALL \
- E ## 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; \
-+ 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) \
-@@ -1288,7 +1338,7 @@ 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 +1349,21 @@ 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 +1372,13 @@ 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 +1390,11 @@ 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 +1558,7 @@ 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) {
-diff --git a/expat/lib/xmltok.h b/expat/lib/xmltok.h
-index ca867aa..752007e 100644
---- a/lib/xmltok.h
-+++ b/lib/xmltok.h
-@@ -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,
-diff --git a/expat/lib/xmltok_impl.c b/expat/lib/xmltok_impl.c
-index 9c2895b..6c5a3ba 100644
---- a/lib/xmltok_impl.c
-+++ b/lib/xmltok_impl.c
-@@ -93,13 +93,13 @@ static int PTRCALL
- PREFIX(scanComment)(const ENCODING *enc, const char *ptr,
- const char *end, const char **nextTokPtr)
- {
-- if (ptr != end) {
-+ if (ptr < end) {
- if (!CHAR_MATCHES(enc, ptr, ASCII_MINUS)) {
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
- ptr += MINBPC(enc);
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- INVALID_CASES(ptr, nextTokPtr)
- case BT_MINUS:
-@@ -147,7 +147,7 @@ PREFIX(scanDecl)(const ENCODING *enc, const char *ptr,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- case BT_PERCNT:
- if (ptr + MINBPC(enc) == end)
-@@ -233,7 +233,7 @@ PREFIX(scanPi)(const ENCODING *enc, const char *ptr,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
- case BT_S: case BT_CR: case BT_LF:
-@@ -242,7 +242,7 @@ PREFIX(scanPi)(const ENCODING *enc, const char *ptr,
- return XML_TOK_INVALID;
- }
- ptr += MINBPC(enc);
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- INVALID_CASES(ptr, nextTokPtr)
- case BT_QUEST:
-@@ -305,7 +305,7 @@ 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;
-@@ -348,7 +348,7 @@ PREFIX(cdataSectionTok)(const ENCODING *enc, const char *ptr,
- ptr += MINBPC(enc);
- break;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- #define LEAD_CASE(n) \
- case BT_LEAD ## n: \
-@@ -391,11 +391,11 @@ PREFIX(scanEndTag)(const ENCODING *enc, const char *ptr,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (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); ptr < end; ptr += MINBPC(enc)) {
- switch (BYTE_TYPE(enc, ptr)) {
- case BT_S: case BT_CR: case BT_LF:
- break;
-@@ -432,7 +432,7 @@ static int PTRCALL
- PREFIX(scanHexCharRef)(const ENCODING *enc, const char *ptr,
- const char *end, const char **nextTokPtr)
- {
-- if (ptr != end) {
-+ if (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- case BT_DIGIT:
- case BT_HEX:
-@@ -441,7 +441,7 @@ 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); ptr < end; ptr += MINBPC(enc)) {
- switch (BYTE_TYPE(enc, ptr)) {
- case BT_DIGIT:
- case BT_HEX:
-@@ -464,7 +464,7 @@ static int PTRCALL
- PREFIX(scanCharRef)(const ENCODING *enc, const char *ptr,
- const char *end, const char **nextTokPtr)
- {
-- if (ptr != end) {
-+ if (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 +474,7 @@ 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); ptr < end; ptr += MINBPC(enc)) {
- switch (BYTE_TYPE(enc, ptr)) {
- case BT_DIGIT:
- break;
-@@ -506,7 +506,7 @@ PREFIX(scanRef)(const ENCODING *enc, const char *ptr, const char *end,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
- case BT_SEMI:
-@@ -529,7 +529,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
- #ifdef XML_NS
- int hadColon = 0;
- #endif
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
- #ifdef XML_NS
-@@ -716,7 +716,7 @@ PREFIX(scanLt)(const ENCODING *enc, const char *ptr, const char *end,
- hadColon = 0;
- #endif
- /* we have a start-tag */
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
- #ifdef XML_NS
-@@ -740,7 +740,7 @@ 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 (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NMSTRT_CASES(enc, ptr, end, nextTokPtr)
- case BT_GT:
-@@ -785,7 +785,7 @@ 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;
-@@ -832,7 +832,7 @@ PREFIX(contentTok)(const ENCODING *enc, const char *ptr, const char *end,
- ptr += MINBPC(enc);
- break;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- #define LEAD_CASE(n) \
- case BT_LEAD ## n: \
-@@ -895,7 +895,7 @@ PREFIX(scanPercent)(const ENCODING *enc, const char *ptr, const char *end,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
- case BT_SEMI:
-@@ -921,7 +921,7 @@ PREFIX(scanPoundName)(const ENCODING *enc, const char *ptr, const char *end,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (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 +941,7 @@ PREFIX(scanLit)(int open, const ENCODING *enc,
- const char *ptr, const char *end,
- const char **nextTokPtr)
- {
-- while (ptr != end) {
-+ while (ptr < end) {
- int t = BYTE_TYPE(enc, ptr);
- switch (t) {
- INVALID_CASES(ptr, nextTokPtr)
-@@ -973,7 +973,7 @@ 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;
-@@ -1141,7 +1141,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
- *nextTokPtr = ptr;
- return XML_TOK_INVALID;
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- CHECK_NAME_CASES(enc, ptr, end, nextTokPtr)
- case BT_GT: case BT_RPAR: case BT_COMMA:
-@@ -1204,10 +1204,10 @@ 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;
- start = ptr;
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- #define LEAD_CASE(n) \
- case BT_LEAD ## n: ptr += n; break;
-@@ -1262,10 +1262,10 @@ 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;
- start = ptr;
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- #define LEAD_CASE(n) \
- case BT_LEAD ## n: ptr += n; break;
-@@ -1326,7 +1326,7 @@ PREFIX(ignoreSectionTok)(const ENCODING *enc, const char *ptr,
- end = ptr + n;
- }
- }
-- while (ptr != end) {
-+ while (ptr < end) {
- switch (BYTE_TYPE(enc, ptr)) {
- INVALID_CASES(ptr, nextTokPtr)
- case BT_LT:
-@@ -1373,7 +1373,7 @@ PREFIX(isPublicId)(const ENCODING *enc, const char *ptr, const char *end,
- {
- ptr += MINBPC(enc);
- end -= MINBPC(enc);
-- for (; ptr != end; ptr += MINBPC(enc)) {
-+ for (; ptr < end; ptr += MINBPC(enc)) {
- switch (BYTE_TYPE(enc, ptr)) {
- case BT_DIGIT:
- case BT_HEX:
-@@ -1760,7 +1760,7 @@ PREFIX(updatePosition)(const ENCODING *enc,
- case BT_CR:
- pos->lineNumber++;
- ptr += MINBPC(enc);
-- if (ptr != end && BYTE_TYPE(enc, ptr) == BT_LF)
-+ if (ptr < end && BYTE_TYPE(enc, ptr) == BT_LF)
- ptr += MINBPC(enc);
- pos->columnNumber = (XML_Size)-1;
- break;
---
-2.8.2
-
projects / buildroot.git / commitdiff