+++ /dev/null
-
-Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
-
-diff --git a/lib/xmlparse.c b/lib/xmlparse.c
---- a/lib/xmlparse.c
-+++ b/lib/xmlparse.c
-@@ -1648,29 +1648,40 @@ XML_ParseBuffer(XML_Parser parser, int l
- XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position);
- positionPtr = bufferPtr;
- return result;
- }
-
- void * XMLCALL
- XML_GetBuffer(XML_Parser parser, int len)
- {
-+/* BEGIN MOZILLA CHANGE (sanity check len) */
-+ if (len < 0) {
-+ errorCode = XML_ERROR_NO_MEMORY;
-+ return NULL;
-+ }
-+/* END MOZILLA CHANGE */
- switch (ps_parsing) {
- case XML_SUSPENDED:
- errorCode = XML_ERROR_SUSPENDED;
- return NULL;
- case XML_FINISHED:
- errorCode = XML_ERROR_FINISHED;
- return NULL;
- default: ;
- }
-
- if (len > bufferLim - bufferEnd) {
-- /* FIXME avoid integer overflow */
- int neededSize = len + (int)(bufferEnd - bufferPtr);
-+/* BEGIN MOZILLA CHANGE (sanity check neededSize) */
-+ if (neededSize < 0) {
-+ errorCode = XML_ERROR_NO_MEMORY;
-+ return NULL;
-+ }
-+/* END MOZILLA CHANGE */
- #ifdef XML_CONTEXT_BYTES
- int keep = (int)(bufferPtr - buffer);
-
- if (keep > XML_CONTEXT_BYTES)
- keep = XML_CONTEXT_BYTES;
- neededSize += keep;
- #endif /* defined XML_CONTEXT_BYTES */
- if (neededSize <= bufferLim - buffer) {
-@@ -1689,17 +1700,25 @@ XML_GetBuffer(XML_Parser parser, int len
- }
- else {
- char *newBuf;
- int bufferSize = (int)(bufferLim - bufferPtr);
- if (bufferSize == 0)
- bufferSize = INIT_BUFFER_SIZE;
- do {
- bufferSize *= 2;
-- } while (bufferSize < neededSize);
-+/* BEGIN MOZILLA CHANGE (prevent infinite loop on overflow) */
-+ } while (bufferSize < neededSize && bufferSize > 0);
-+/* END MOZILLA CHANGE */
-+/* BEGIN MOZILLA CHANGE (sanity check bufferSize) */
-+ if (bufferSize <= 0) {
-+ errorCode = XML_ERROR_NO_MEMORY;
-+ return NULL;
-+ }
-+/* END MOZILLA CHANGE */
- newBuf = (char *)MALLOC(bufferSize);
- if (newBuf == 0) {
- errorCode = XML_ERROR_NO_MEMORY;
- return NULL;
- }
- bufferLim = newBuf + bufferSize;
- #ifdef XML_CONTEXT_BYTES
- if (bufferPtr) {
-