Skip to content
GitLab
Commit e50ba816 authored by Daniel Veillard's avatar Daniel Veillard
Browse files

Improve handling of xmlStopParser() 

Add a specific parser error
Try to stop parsing as quickly as possible
parent 5fe9e9ed
Hide whitespace changes
Inline Side-by-side
include/libxml/xmlerror.h
View file @ e50ba816
......@@ -208,6 +208,7 @@ typedef enum {
XML_ERR_UNKNOWN_VERSION, /* 108 */
XML_ERR_VERSION_MISMATCH, /* 109 */
XML_ERR_NAME_TOO_LONG, /* 110 */
XML_ERR_USER_STOP, /* 111 */
XML_NS_ERR_XML_NAMESPACE = 200,
XML_NS_ERR_UNDEFINED_NAMESPACE, /* 201 */
XML_NS_ERR_QNAME, /* 202 */
......
parser.c
View file @ e50ba816
......@@ -2549,6 +2549,8 @@ xmlParserHandlePEReference(xmlParserCtxtPtr ctxt) {
NEXT;
if ((ctxt->sax != NULL) && (ctxt->sax->getParameterEntity != NULL))
entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
if (ctxt->instate == XML_PARSER_EOF)
return;
if (entity == NULL) {
/*
......@@ -5006,7 +5008,8 @@ get_more:
}
if (buf != NULL)
xmlFree(buf);
ctxt->instate = state;
if (ctxt->instate != XML_PARSER_EOF)
ctxt->instate = state;
return;
}
if (buf != NULL) {
......@@ -5594,6 +5597,8 @@ xmlParseEntityDecl(xmlParserCtxtPtr ctxt) {
}
}
}
if (ctxt->instate == XML_PARSER_EOF)
return;
SKIP_BLANKS;
if (RAW != '>') {
xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_NOT_FINISHED,
......@@ -7583,6 +7588,8 @@ xmlParseEntityRef(xmlParserCtxtPtr ctxt) {
ent = xmlSAX2GetEntity(ctxt, name);
}
}
if (ctxt->instate == XML_PARSER_EOF)
return(NULL);
/*
* [ WFC: Entity Declared ]
* In a document without any DTD, a document with only an
......@@ -7775,6 +7782,10 @@ xmlParseStringEntityRef(xmlParserCtxtPtr ctxt, const xmlChar ** str) {
ent = xmlSAX2GetEntity(ctxt, name);
}
}
if (ctxt->instate == XML_PARSER_EOF) {
xmlFree(name);
return;
}
/*
* [ WFC: Entity Declared ]
......@@ -7936,8 +7947,9 @@ xmlParsePEReference(xmlParserCtxtPtr ctxt)
*/
if ((ctxt->sax != NULL) &&
(ctxt->sax->getParameterEntity != NULL))
entity = ctxt->sax->getParameterEntity(ctxt->userData,
name);
entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
if (ctxt->instate == XML_PARSER_EOF)
return;
if (entity == NULL) {
/*
* [ WFC: Entity Declared ]
......@@ -8174,8 +8186,11 @@ xmlParseStringPEReference(xmlParserCtxtPtr ctxt, const xmlChar **str) {
*/
if ((ctxt->sax != NULL) &&
(ctxt->sax->getParameterEntity != NULL))
entity = ctxt->sax->getParameterEntity(ctxt->userData,
name);
entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
if (ctxt->instate == XML_PARSER_EOF) {
xmlFree(name);
return;
}
if (entity == NULL) {
/*
* [ WFC: Entity Declared ]
......@@ -8277,6 +8292,8 @@ xmlParseDocTypeDecl(xmlParserCtxtPtr ctxt) {
if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
if (ctxt->instate == XML_PARSER_EOF)
return;
/*
* Is there any internal subset declarations ?
......@@ -10035,6 +10052,8 @@ xmlParseElement(xmlParserCtxtPtr ctxt) {
* Parse the content of the element:
*/
xmlParseContent(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
return;
if (!IS_BYTE_CHAR(RAW)) {
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
"Premature end of data in tag %s line %d\n",
......@@ -10607,6 +10626,8 @@ xmlParseDocument(xmlParserCtxtPtr ctxt) {
*/
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
if ((ctxt->encoding == NULL) &&
((ctxt->input->end - ctxt->input->cur) >= 4)) {
......@@ -10658,6 +10679,8 @@ xmlParseDocument(xmlParserCtxtPtr ctxt) {
}
if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
/*
* The Misc part of the Prolog
......@@ -10677,6 +10700,8 @@ xmlParseDocument(xmlParserCtxtPtr ctxt) {
if (RAW == '[') {
ctxt->instate = XML_PARSER_DTD;
xmlParseInternalSubset(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
}
/*
......@@ -10687,6 +10712,8 @@ xmlParseDocument(xmlParserCtxtPtr ctxt) {
(!ctxt->disableSAX))
ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName,
ctxt->extSubSystem, ctxt->extSubURI);
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
ctxt->inSubset = 0;
xmlCleanSpecialAttr(ctxt);
......@@ -10827,6 +10854,8 @@ xmlParseExtParsedEnt(xmlParserCtxtPtr ctxt) {
}
if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
/*
* Doing validity checking on chunk doesn't make sense
......@@ -10837,6 +10866,8 @@ xmlParseExtParsedEnt(xmlParserCtxtPtr ctxt) {
ctxt->depth = 0;
xmlParseContent(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
if ((RAW == '<') && (NXT(1) == '/')) {
xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
......@@ -11144,7 +11175,7 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
}
xmlParseGetLasts(ctxt, &lastlt, &lastgt);
while (1) {
while (ctxt->instate != XML_PARSER_EOF) {
if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1))
return(0);
......@@ -11384,6 +11415,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
ctxt->sax->endElement(ctxt->userData, name);
#endif /* LIBXML_SAX1_ENABLED */
}
if (ctxt->instate == XML_PARSER_EOF)
goto done;
spacePop(ctxt);
if (ctxt->nameNr == 0) {
ctxt->instate = XML_PARSER_EPILOG;
......@@ -11574,6 +11607,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
ctxt->sax->characters(ctxt->userData,
ctxt->input->cur, tmp);
}
if (ctxt->instate == XML_PARSER_EOF)
goto done;
SKIPL(tmp);
ctxt->checkIndex = 0;
}
......@@ -11609,6 +11644,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
ctxt->sax->characters(ctxt->userData,
ctxt->input->cur, base);
}
if (ctxt->instate == XML_PARSER_EOF)
goto done;
SKIPL(base + 3);
ctxt->checkIndex = 0;
ctxt->instate = XML_PARSER_CONTENT;
......@@ -11642,6 +11679,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
"PP: Parsing PI\n");
#endif
xmlParsePI(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_MISC;
ctxt->progressive = 1;
ctxt->checkIndex = 0;
......@@ -11658,6 +11697,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
"PP: Parsing Comment\n");
#endif
xmlParseComment(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_MISC;
ctxt->progressive = 1;
ctxt->checkIndex = 0;
......@@ -11682,6 +11723,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
ctxt->progressive = 0;
ctxt->checkIndex = 0;
xmlParseDocTypeDecl(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
if (RAW == '[') {
ctxt->instate = XML_PARSER_DTD;
#ifdef DEBUG_PUSH
......@@ -11741,6 +11784,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
"PP: Parsing PI\n");
#endif
xmlParsePI(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_PROLOG;
ctxt->progressive = 1;
} else if ((cur == '<') && (next == '!') &&
......@@ -11755,6 +11800,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
"PP: Parsing Comment\n");
#endif
xmlParseComment(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_PROLOG;
ctxt->progressive = 1;
} else if ((cur == '<') && (next == '!') &&
......@@ -11793,6 +11840,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
"PP: Parsing PI\n");
#endif
xmlParsePI(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_EPILOG;
ctxt->progressive = 1;
} else if ((cur == '<') && (next == '!') &&
......@@ -11807,6 +11856,8 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
"PP: Parsing Comment\n");
#endif
xmlParseComment(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_EPILOG;
ctxt->progressive = 1;
} else if ((cur == '<') && (next == '!') &&
......@@ -11937,6 +11988,8 @@ not_end_of_int_subset:
found_end_int_subset:
ctxt->checkIndex = 0;
xmlParseInternalSubset(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->inSubset = 2;
if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
(ctxt->sax->externalSubset != NULL))
......@@ -11944,6 +11997,8 @@ found_end_int_subset:
ctxt->extSubSystem, ctxt->extSubURI);
ctxt->inSubset = 0;
xmlCleanSpecialAttr(ctxt);
if (ctxt->instate == XML_PARSER_EOF)
goto done;
ctxt->instate = XML_PARSER_PROLOG;
ctxt->checkIndex = 0;
#ifdef DEBUG_PUSH
......@@ -12220,6 +12275,9 @@ xmldecl_done:
avail - old_avail)))
xmlParseTryOrFinish(ctxt, terminate);
}
if (ctxt->instate == XML_PARSER_EOF)
return(ctxt->errNo);
if ((ctxt->input != NULL) &&
(((ctxt->input->end - ctxt->input->cur) > XML_MAX_LOOKUP_LIMIT) ||
((ctxt->input->cur - ctxt->input->base) > XML_MAX_LOOKUP_LIMIT)) &&
......@@ -12423,6 +12481,7 @@ xmlStopParser(xmlParserCtxtPtr ctxt) {
if (ctxt == NULL)
return;
ctxt->instate = XML_PARSER_EOF;
ctxt->errNo = XML_ERR_USER_STOP;
ctxt->disableSAX = 1;
if (ctxt->input != NULL) {
ctxt->input->cur = BAD_CAST"";
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment